Note: Descriptions are shown in the official language in which they were submitted.
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SPECIFICATION
MULTIFUNCTIONAL SAFETY DEVICE FOR A VEHICLE SEAT
AND VEHICLE SEAT EQUIPPED WITH THE SAME
Field of the invention
The present invention relates to a safety protection device for a
vehicle seat, and more particularly to a multifunctional safety device and
a vehicle seat equipped with the multifunctional safety device.
Description of the Related Art
With the improvement of economic status of the society, in
nowadays, more people are possessing a wide range of cars, and safety
belts inevitably become one of the crucial accessories in the vehicles and
are designed to provide safety protection measures for the passengers of a
vehicle in unexpected accidents.
With the efforts of Volvo engineers in 1950s, vehicle safety belts
have been developed into forms familiar to us today. PRC Patent No.
CN201040516Y discloses a vehicle safety belt, PRC Patent No.
CN100486840C discloses a safety belt device, and European Patent No.
EP2492157A1 also discloses a seat belt assembly.
However, those safety belt devices disclosed in the aforementioned
patents generally provide safety protection only for a passenger in the
sitting position. If the passenger is in the lying position, especially lying
in a double seat to have a rest or the passenger can only stay in the lying
position due to physical conditions, or an article is placed on the seat, as
restricted by the buckle position of the safety belts and the installation
position of the belts, the safety belts cannot provide the safety protection
for the passenger in the lying position or the article placed on the seat,
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which is a potential hazard to the passenger safety and the article
stabilization. Some technical solutions for solving the aforementioned
problems usually add an independent device like a safety strap, which
requires a complicated arrangement, adds the costs and deteriorates the
sitting comfort. Meanwhile, the number of devices on the seat is too
many and the layout becomes complicated, which arises the
inconvenience of the passenger in using the seat, or when the article is
placed on the seat, the action of pressing or squeezing on the safety belt
will cause the wear-and-tear of the safety strap, which thus reduces the
safety protection performance of the safety strap.
Though years of research, those skilled in the field discover that the
vehicle safety belt device should be in the proper ranges to absorb the
collision force, and meanwhile, the safety belt must be convenient to use
and easy to adjust.
People always say that simple is always the best, so it is necessary to
develop a multifunctional vehicle seat safety device featured in the
technical effects of using the least devices to achieve the most functions
and efficiencies under the prerequisite of being cost-effective and simple
and convenient. Therefore, the vehicle safety belts in the prior arts need
modifications and improvements to provide safety protections for the
passenger in either the sitting position or the lying position, ensure the
stabilization of the luggage placed on the unoccupied seat, and form a
three-dimensional protection, in which the belts become arms for
grasping in an emergency situation, thereby achieving an effective safety
device with five-in-one functions.
SUMMARY OF THE INVENTION
An objective of the present invention is directed to provide a
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multifunctional safety device for a vehicle seat, which has an improved
safety protection performance of safety belts, is simple and convenient to
use, has simplified structure, multifunction, high efficiency and comfort
in use, and can provide safety protection for a passenger in either the
sitting position or the lying position for having a rest or due to the
physical conditions that require the passenger to stay lying on the back or
on the side only, and additionally stabilize the luggage placed on the
unoccupied vehicle seat.
In order to solve the aforementioned problems, the technical solution
of the present invention provides a multifunctional safety device, which
includes a retractor, a safety belt movably sleeved and fitted with a first
fastener, a first fastener slot that is arranged at the junction of a backrest
and a seat cushion and is matched and clamped with the first fastener
when a passenger is in the sitting position, and a second fastener slot that
is arranged at the bottom of the seat cushion or close to the seat cushion
and is matched and clamped with the first fastener when a passenger is in
the lying position or an article is placed on the seat, in which the length of
the safety belt is defined to allow the first fastener matched and clamped
with the second fastener slot.
The multifunctional safety device according to the aforementioned
technical solution realizes five functions at the same time, including when
a passenger is in the sitting position, the first fastener movably secured to
the safety belt is matched and clamped with the first fastener slot
arranged at the junction of a backrest and a seat cushion to guarantee the
safety of the passenger in the sitting position. When the passenger is in
the lying position, the first fastener is matched and clamped with the
second fastener slot arranged at the bottom of the seat cushion or close to
the seat cushion to guarantee the safety of the passenger in the lying
position. Additionally, when an article is placed on the seat, the
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multifunctional safety device provides stabilization and safety functions,
and forms a three-dimensional protection inside the vehicle and the belt
becomes the arms for grasping in an emergency situation, which has the
beneficial effects that the multifunctional safety device can be used in the
normal sitting position, guarantee the safety of the passenger in the lying
position, or stabilize the article when placed on the seat, and improves the
safety protection performance of the passenger in a sleeping position or
lying on the back or on the side under special conditions. Meanwhile,
since the safety belt may be extended and drawn to a front end of the seat,
io which form a
three-dimensional protection space, the belts function as the
arms in an emergency situation because the belts are the components
which are convenient to grasp and can be grasped in multiple dimensions
inside the vehicle. Moreover, the multifunctional safety device fully
utilizes the space of the unoccupied seat and can stabilize the article
placed on the seat. For the article of a large size like the luggage or quilt
which is often put on the vehicle seat, the safety belt devices of the prior
arts are designed for the passenger in the sitting position and cannot be
effectively applied to these articles, thus failing to provide the
stabilization function. Directed to this problem, after lots of researches
and experiments on the status and the center of gravity of the large
articles when placed on the seat, the multifunctional safety device
according to the technical solution of the present invention can provide
the most reliable stabilization effect, and is convenient to guarantee the
optimal stabilized status of the article like the luggage inside the vehicle.
Meanwhile, the multifunctional safety device has a simplified
structure and avoids the layout of large number of devices and straps,
which eliminates the problem of the wear-and-tear of the safety strap
caused by the action of pressing or squeezing on the safety belt for a long
period when the passenger is sleeping or the article is placed on the seat.
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The structure arrangement of the present invention is an improvement on
the structure of the safety belts of the prior arts, and featured in the
simple
processing techniques, reduced costs, multifunction and high efficiency,
which realizes the multifunction based on the conventional safety belts,
5 provides safety and convenience in use, improves the using efficiency of
the safety belt, is tough and expands the using lifespan of the safety belt,
and further guarantees the combination of the safety and comfort of the
user.
Additionally, the multifunctional safety device of the present
io invention provides options for the vehicle manufacturers to choose from
without increasing the costs or modification of the original architecture of
the vehicle, and increases the functions and comfort of the vehicle,
improves the safety, and allows multiple times of arrangement, and also
improves the safety and comfort when having a trip in the vehicle,
improves the driving safety, such as preventing the large-sized article
sliding on the seat to distract the diver's attention and impact on the
driving safety. For the vehicle manufacturers, this invention is
highlighted by the low costs when the safety device is properly applied,
and thus enhancing the popularity among the clients.
According to an improvement of the present invention, one end of
the safety belt is secured to the vehicle body close to the lower lateral side
of the vehicle seat, and the other end is connected to a retractor arranged
inside the vehicle body close to the lateral side of the vehicle seat and is
drawn out through an opening in the vehicle body close to the upper
lateral side of the vehicle seat. This structure arrangement expands the
moving space of the passenger on the seat, and stabilizes the safety belt to
a larger extent and tightly secures the safety belt, and the safety belt will
not be easily displaced.
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According to an improvement of the present invention, one end of
the safety belt is secured to the lateral side or the lower back of the
backrest, the other end is connected to the retractor arranged inside the
vehicle seat or at the back of the seat and is drawn out through an opening
in the lateral side or the upper back of the vehicle seat. This structure
provides the effects of convenient operations for the passenger.
Meanwhile, the safety belt when using provides a better fitting, comfort
and stabilization.
According to an improvement of the present invention, one end of
the safety belt is secured to the vehicle seat via a D point arranged inside
the backrest or in the lower left part of the back of the backrest, and the
other end is drawn out through a C point arranged inside the backrest or
in the upper left part of the back of the backrest. In other words, one end
of the safety belt is fixed, and the other end is not fixed. The effects of
the
present invention include provide further convenience for passenger to
buckle the safety belt, i.e. the safety belt will not occupy the moving
space of the passenger when the safety belt does not need to be
unfastened.
According to an improvement of the present invention, the safety
belt is further movably sleeved and fitted with a second fastener, and
when the first fastener is matched and clamped with the second fastener
slot, the second fastener may be matched and clamped with the first
fastener slot.
When the passenger is in the lying position, the first fastener is
matched and clamped with the second fastener slot, so the safety belt
anchors the position of the center of gravity of the passenger so as to
protect the passenger against the unexpected accidents. However, another
situation should be taken into consideration that the position of the center
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of gravity of some passengers is not suitable to be anchored by the safety
belt, so the safety belt is further movably sleeved and fitted with a second
fastener which may be matched and clamped with the first fastener slot,
and in this manner, the safety belt anchors about in the middle of the
passenger rather the center of gravity of the passenger's body, which
meets the requirements of passengers having special needs and
meanwhile saving the use of the fastener slot.
According to an improvement of the present invention, the second
fastener slot is arranged at 1/3 from the left or right end of the seat
io cushion along a transverse length of the seat cushion.
The second fastener slot is arranged at 1/3 from the left or right end
of the seat cushion along a transverse length of the seat cushion. Only the
vehicle seat, especially the seat or bench provided for sitting two or more
passengers, i.e. two or more seats allows the passenger being in the lying
position. In this situation, the seat cushion is divided into three equal
portions, the second fastener slot is installed at about 1/3 from the left or
right end of the seat cushion, which provides the beneficial effects that
when the passenger is in the lying position, the multifunctional safety belt
can substantially brace across the position of the center of gravity of the
passenger's body and the passenger is protected against the safety
accidents due to the sudden stop of the vehicle.
According to an improvement of the present invention, the second
fastener slot is further connected to a retractor belt, and the second
fastener slot is allowed to move freely in the length direction of the
retractor belt. The retractor belt has elasticity, so the retractor belt can
be
used for adjusting when the length of the safety belt is not long enough,
which has the beneficial effect of realizing the convenient operation of
clamping the first fastener and the second fastener slot.
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According to an improvement of the present invention, a seat
support bracket is arranged below the seat cushion, and the seat support
bracket is further provided with a first hiding port for accommodating and
hiding the second fastener slot. The second fastener slot can be arranged
on the seat support bracket at the position close to the seat cushion
through the retractor belt, but the second fastener slot is not limited to be
arranged at the position on the seat support bracket and can be arranged at
any position close to the seat cushion.
According to an improvement of the present invention, the
io connecting end of the retractor belt is fixed in the first hiding port,
which
allows the retractor belt together with the second fastener slot to be
accommodated in the hiding port, and realizes a chic appearance and
expands the moving space of the passenger.
According to an improvement of the present invention, the lateral
side of the bottom of the seat cushion is further provided with a second
hiding port for accommodating and hiding the second fastener slot.
According to an improvement of the present invention, the
connecting end of the retractor belt is fixed in the second hiding port.
The second fastener slot is connected to a retractor belt, and a
zo connecting end of the retractor belt is fixed on the seat support bracket
below the seat cushion, and the seat support bracket or the lateral side of
the bottom of seat cushion is further provided with a hiding port for
accommodating and hiding the second fastener slot.
The second fastener slot can be directly secured or connected to the
retractor belt, and the connecting end of the retractor belt is fixed to the
seat support bracket under the seat cushion. The functions of the seat
support bracket mainly include giving support to the seat cushion. The
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seat support bracket is further provided with a hiding port for
accommodating and hiding the second fastener slot, which allows the
second fastener slot connected to retractor belt tucked in the hiding port
when the safety belt is not in use, and thus the second fastener slot is
accommodated and hidden to offer the chic appearance without
occupying the space. In addition, the lateral side of the bottom of the seat
cushion may be provided with a hiding port for accommodating and
hiding the second fastener slot, which offers a better chic appearance and
facilitates the expansion of the moving space of the passenger.
The second fastener slot is connected to the retractor belt, and the
seat support bracket is arranged below the seat cushion. The seat support
bracket or the lateral side of the bottom of the seat cushion is further
provided with a hiding port for accommodating and hiding the second
fastener slot, and the connecting end of the retractor belt is fixed in the
second hiding port.
The connecting end of the retractor belt is fixed in the hiding port,
and this structure arrangement has the effects that when the second
fastener slot is not in use, the second fastener slot with the retractor belt
is
hidden away from appearance, which saves the space inside the vehicle,
provides the convenience for the passenger to change positions and
prevents hooking the clothes.
According to an improvement of the present invention, the safety
belt is further provided with a strap adjuster for adjusting the length of the
safety strap according to the body size of the passenger.
Another technical problem to be solved by the present invention is
providing a vehicle seat equipped with the multifunctional safety device,
which can protect the safety of the passenger in either the sitting position
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or the lying position.
To solve the aforementioned technical problems, the technical
solution of the present invention provides a vehicle seat, which includes a
backrest and a seat cushion connected to the backrest. The
5 aforementioned multifunctional safety device is arranged at both the left
and right sides of the backrest to become an integral car seat, which forms
a three-dimensional protection space when used by a passenger in either
the sitting position or the lying position.
The multifunctional safety device arranged at both the left and right
10 sides of the backrest has the beneficial effects that when the
passenger is
in the lying position, the position of the center of gravity and the legs are
braced by the safety strap, so the safety of the passenger in the lying
position can be protected no matter which side the head of the passenger
is facing. The multifunctional safety device when applied to or installed
on the vehicle seat will have a better effect, and can react with the
breaking to tighten the safety belt by the use of a sensor inside the
retractor, so as to tighten and consolidate the three-dimensional protection
space provided by the multifunctional safety device and provide the
restrain and stopping function and strengthen the protection force.
According to an improvement of the present invention, a
multifunctional safety device is further arranged in the middle of the
backrest, and the multifunctional safety device includes a safety strap, in
which the safety strap includes a connecting end connected to the
backrest and a free end equipped with a third fastener. When a passenger
is in the sitting position, the third fastener is matched and clamped with
the third fastener slot arranged at the junction of the seat cushion and the
backrest, and when the passenger is in the lying position, the third
fastener is matched and clamped with the fourth fastener slot arranged at
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the bottom of the seat cushion.
A safety belt is arranged in the middle of the backrest, which has the
beneficial effects of providing further protection to the safety of the
passenger in the sitting position and the lying position and meanwhile
increasing the number of the occupants on the seat.
According to an improvement of the present invention, the fourth
fastener slot is further connected to a second retractor belt, and the second
retractor belt is fixed on the seat support bracket below the seat cushion.
The seat support bracket is further provided with a third hiding port for
io accommodating and hiding the fourth fastener slot.
According to an improvement of the present invention, the fourth
fastener slot is further connected to a second retractor belt, and a seat
support bracket is arranged below the seat cushion. The seat support
bracket is further provided with a fourth hiding port for accommodating
and hiding the fourth fastener slot, and the connecting end of the second
retractor belt is fixed in the fourth hiding port.
According to an improvement of the present invention, the
connecting end of the safety strap is connected to a position A at the
upper portion of the backrest or connected to a position B at the junction
of the seat cushion and the backrest.
By connecting the connecting end of the safety strap to the position
A at the upper portion of the backrest, when the passenger is in the sitting
position, the safety strap braces the upper body downwardly from the
shoulder, and thus the entire upper body is in the protection range of the
safety belt. Additionally, by connecting the connecting end of the safety
strap to the position B at the junction of the seat cushion and the backrest,
the length of the safety strap is reduced and the cost is reduced. In
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addition, when the passenger is in the lying position, the safety strap
relatively braces the passenger more tightly, which further provides the
safety protection for the passenger in the lying position.
The multifunctional safety device and the vehicle seat according to
the technical solution of the present invention are applied to provide the
reduced costs, simple processing techniques, and the device has five
functions at the same time and provides convenience, comfort and safety
for the passenger in either the sitting position or the lying position. The
space of the vehicle seat is effectively utilized. The article can be stably
io placed on the seat, and the using lifespan of the safety belt is
expended.
The device of the present invention is applicable to all sorts of safety belt
devices, which include, but not limited to, safety belt devices for ordinary
vehicles, alarm safety belt device, purely mechanical safety belt device,
motor-driven, electronic controlled safety belt devices and so on.
Additionally, for the vehicle manufacturers, choosing the multifunctional
safety device of the present invention has obvious commercial advantages
and helps the successes in business.
BRIEF DESCRIPTION OF THE DRAWING
To make a comprehensive understanding of the present invention,
the embodiments are illustrated in accompanying with the drawings
hereinafter:
Fig. 1 is a schematic structural view illustrating a multifunctional
safety device;
Fig. 2 seat is a schematic structural view illustrating a vehicle
equipped with the multifunctional safety device;
Fig. 3 is a schematic enlarged view illustrating a strap adjuster of the
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multifunctional safety device;
Fig. 4 is a schematic enlarged view illustrating a second fastener slot
with the retractor belt;
Fig. 5 is a schematic structural view illustrating multifunctional
safety device with a first hiding port;
Fig. 6 is a schematic structural view illustrating a multifunctional
safety device with a second hiding port;
Fig. 7 is a schematic view illustrating the vehicle seat with the
multifunctional safety device arranged in the middle;
Fig. 8 is a schematic enlarged view illustrating the fourth fastener
slot with the retractor belt;
Fig. 9 is a schematic structural view illustrating the vehicle seat with
the fourth hiding port;
Fig. 10 is a schematic structural view illustrating the vehicle seat
with the third hiding port; and
Fig. 11 is a schematic structural view illustrating a safety belt
sleeved with fastener slot.
List of reference numerals
1 - safety belt, 101 - vehicle seat, 102 - second fastener, 103 -
multifunctional safety device, 104 - safety strap, 2 - first fastener, 3 -
first fastener slot, 4 - backrest, 401 - C point at the upper left part of the
vehicle seatback, 402 - D point at the lower left part of the vehicle
seatback, 5 - seat cushion, 6 - second fastener slot, 7 - retractor belt, 701
- connecting end of the retractor belt, 8 - seat support bracket, 9 - first
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hiding port, 10 - second hiding port, 11 - strap adjuster, 12 - the third
fastener, 13 - the third fastener slot, 14 - the fourth fastener slot, 15 -
the
third hiding port, 16 - the fourth hiding port, 1041 - connecting end of
the safety strap, 1042 - free end of the safety strap, 17 - fastener slot.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
In Fig. 1, the multifunctional safety device for a vehicle seat
includes a retractor, a safety belt 1 that is further provided with a strap
adjuster 11 for adjusting the length of the safety belt 1 (as shown in Fig. 3)
and movably sleeved and fitted with a first fastener 2, a first fastener slot
3 that is arranged at the junction of a backrest 4 and a seat cushion 5 and
is matched and clamped with the first fastener 2 when a passenger is in
the sitting position, and a second fastener slot 6 that is arranged at the
bottom of the seat cushion 5 or close to the seat cushion 5 and is matched
and clamped with the first fastener 2 when a passenger is in the lying
position or an article is placed on the seat, in which the length of the
safety belt 1 is defined to allow the first fastener 2 matched and clamped
with the second fastener slot 6, and the second fastener slot 6 (as shown
in Fig. 4) is arranged at 1/3 from the left or right end of the seat cushion 5
along the transverse length direction of the seat cushion 5.
Two ends of the safety belt 1 are secured on the vehicle body close
to the lateral side of the vehicle seat, and alternatively, as shown in Fig.
7,
two ends of the safety belt 1 can be secured to the lateral side of the
backrest 4, and the two ends of the safety belt 1 are respectively secured
on the vehicle seat 101 via the C point 401 on the upper left part of the
vehicle seatback 4 and the D point 402 on the lower left part of the
vehicle seatback 4.
The safety belt 1 is further movably sleeved and fitted with a second
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fastener 102. When the first fastener 2 is matched and clamped with the
second fastener slot 6, the second fastener 102 is matched and clamped
with the first fastener slot 3, and in use, when the passenger needs to lie
down, the first fastener 2 is matched and clamped with the second
5 fastener slot 6, and if the position of the center of gravity is not
suitable
for restraining the passenger, the second fastener 102 is matched and
clamped with the first fastener slot, which further protects the safety of
the passenger.
Furthermore, the second fastener slot 6 is further connected to
10 retractor belt 7, the connecting end 701 of the retractor belt 7 is
fixed on
the seat support bracket 8 below the seat cushion 5. The seat support
bracket 8 is further provided with a first hiding port 9 for accommodating
and hiding the second fastener slot 6, as shown in Fig. 5. In Fig. 6, the
first hiding port 9 for accommodating and hiding the second fastener slot
15 6 can be arranged at the lateral side of the bottom of the seat cushion
4.
In the situation that the seat support bracket 8 is arranged below the
seat cushion 5, the second fastener slot 6 is connected to the retractor belt
7, the seat support bracket 8 may be provided with a second hiding port
10 for accommodating and hiding the second fastener slot 6, and the
connecting end 701 of the retractor belt 7 is fixed in the second hiding
port 10. Definitely, the second hiding port 10 for accommodating and
hiding the second fastener slot 6 can be arranged at the lateral side of the
bottom of the seat cushion 4, and the connecting end 701 of the retractor
belt 7 is fixed in the second hiding port 10, as shown in Fig. 6.
In Fig. 2, the vehicle seat includes a backrest 4 and a seat cushion 5
connected to the backrest 4. The multifunctional safety device is arranged
at both the left and right sides of the vehicle seat, and when used by the
passenger, an integral vehicle seat is formed to provide the three-
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dimensional protection space in either the sitting position or the lying
position.
A multifunctional safety device 103 is further arranged in the middle
of the backrest 4, and the multifunctional safety device 103 includes a
safety strap 104. The safety strap 104 includes a connecting end 1041
connected to the backrest 4, and includes a free end 1042 that is equipped
with a third fastener 12. When a passenger is in the sitting position, the
third fastener 12 is matched and clamped with the third fastener slot 13
arranged at the junction of the seat cushion 5 and the backrest 4, and
when the passenger is in the lying position, the third fastener 12 is
matched and clamped with the fourth fastener slot 14 arranged at the
bottom of the seat cushion 5 (as shown in Fig. 8). The fourth fastener slot
14 is further connected to the second retractor belt 1401, and the second
retractor belt 1401 is fixed on the seat support bracket 8 below the seat
cushion 5. The seat support bracket 8 is further provided with the third
hiding port 15 for accommodating and hiding the fourth fastener slot 14.
Alternatively, the fourth fastener slot 14 is further connected to the
second retractor belt 1401, the seat support bracket 8 is arranged below
the seat cushion 5, the seat support bracket 8 is further provided with the
fourth hiding port 16 for accommodating and hiding the fourth fastener
slot 14 (as shown in Fig. 9), and the connecting end 1402 of the second
retractor belt 1401 is fixed in the fourth hiding port 16.
As an variation, the second retractor belt 1401 is fixed at the bottom
of the seat cushion 4 or below the seat cushion 4, the third hiding port 15
(as shown in Fig. 10) is arranged at the bottom of the seat cushion 4 or
below the seat cushion 4, which provide a better effect of hiding the
fourth fastener slot 14.
In Fig. 2, the connecting end 1041 of the safety strap 104 is
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connected to a position A at the upper portion of the backrest 4 or
connected to a position B at the junction of the seat cushion 5 and the
backrest 4.
When the multifunctional safety device of the technical solution of
the present invention is adopted and arranged on the vehicle seat, the
multifunctional safety device provides the beneficial effects including
providing protection against the reduced speed during the sudden stop so
as to avoid the passenger in the lying position or the article colliding with
the front seat, or tripping on the floor; distribution of the apparent force;
in providing a further buffer to the apparent force through the extension of
the safety belt; preventing the lying passenger or article ejected from the
vehicle; and forming a three-dimensional protection space, which offers a
comprehensive protection and the restrain and stopping functions are
distinctive, and the safety belts can function as the arms.
The embodiments of the present invention are illustrated in
accompanying with the drawings; however, it should be noted that the
present invention is not limited to the aforementioned embodiments and
can be modified and varied by those of ordinary skills in the art without
departing the scope of the present invention. For example, the
multifunctional safety device of the present invention can be applied to
the integral sitting and lying seat in a motorhome. Additionally, in Fig. 11,
the safety belt 1 is sleeved with a fastener slot 17, so when the
multifunctional safety belt or the fastener slot 17 is not in use, the
fastener
slot 17 slides close to the lower end of the safety belt 1 and stays in the
imperceptible or hidden state, and when using the multifunctional safety
belt or the fastener slot 17, especially when both the left and right sides of
the vehicle seat are provided with the multifunctional safety device, the
fastener slot 17 of the safety belt of the left multifunctional safety device
may be matched and clamped with the fastener of the safety belt on the
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right multifunctional safety device, so the seat forms a three-dimensional
protection space, which improves the safety or maintains the article of a
large size placed on the seat in the three-dimensional protection space and
not departing from the seat cushion. Definitely, the fastener slot of the
safety belt of the right multifunctional safety device can be matched and
clamped with the fastener of the safety belt of the left multifunctional
safety device, or the safety belt of the multifunctional safety device at
either or both the left or the right sides is sleeved with the fastener slot
17.
In an alternative variation, the fastener slot arranged close to the left end
of the bottom of the seat cushion can be matched and clamped with the
fastener of the safety belt on the multifunctional safety device at the right
side of the seat, or otherwise, the fastener slot arranged close to the right
end of the bottom of the seat cushion the bottom can be matched and
clamped with the fastener of the safety belt on the multifunctional safety
device at the left side of the seat. In this manner, the passenger can
choose which slot to be clamped with the fastener according to the self
body size and comfort, so the adaptability of the fastener is expanded and
meanwhile the comfort of the passenger is improved. Furthermore, when
the safety belt of the invention is extended to a certain length threshold,
zo the safety belt is restricted to retract toward the retractor only and
cannot
be further extended, and forms a stable three-dimensional protection
space and is reliable when functions as the arms. This structure
arrangement is also applicable to all the aforementioned technical
solutions.
