Note: Descriptions are shown in the official language in which they were submitted.
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DESCRIPTION
CHAIR
Field
[0001] The present invention relates to a chair, and
particularly to a chair having a backrest to which an
optional member is attached.
Background
[0002] A conventional chair has a backrest to which an
optional member such as a hanger for hanging clothes, a
headrest, or the like, is attached (for example, see Patent
Literatures 1 to 5).
Citation List
Patent Literature
[0003] Patent Literature 1: Japanese Patent Application
Laid-open No. 2005-245866
Patent Literature 2: Japanese Patent Application
Laid-open No. 2006-110013
Patent Literature 3: Japanese Patent No. 3801769
Patent Literature 4: Japanese Patent No. 4146890
Patent Literature 5: Japanese Patent No. 4097186
Summary
Technical Problem
[0004] However, in the above-described conventional
chair, since a mounting structure configured to mount the
optional member on the backrest is complicated, a mounting
operation is troublesome, and after the optional member is
dismounted from the backrest, a portion of the mounting
structure such as a screw hole is left and exposed
externally, spoiling the appearance of the chair.
[0005] The present invention has been made in
consideration of the above-described problems, and an
object of the present invention is to provide a chair
capable of stably and securely mounting an optional member
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on a backrest with a simple structure, easily adjusting a
mounting position of the optional member in an
upward/downward direction, and maintaining a good
appearance of the backrest after the optional member is
dismounted.
Solution to Problem
[0006] According to the present invention, the above
object is accomplished by the following aspects.
(1) Concave grooves recessed rearward and forward and
oriented in an upward/downward direction are formed in
front and rear surfaces of left and right side portions of
a backrest, and portions of mounting members installed at
both sides of an optional member are engaged with the
concave grooves to mount the optional member on the
backrest.
[0007] According to the above-described configuration,
since the portions of the mounting members of the optional
member are engaged with the grooves formed in the left and
right sides of the backrest, the optional member can be
stably and securely mounted with a simple structure. Even
when the optional member is disposed at any position
(height) along the grooves, the optional member can be
mounted with the same structure. Thus, a mounting position
of the optional member in an upward/downward direction can
be easily adjusted.
In addition, after the optional member is dismounted,
since no element of the mounting structure such as a screw
hole, etc., remains, a good appearance of the backrest is
maintained.
[0008] (2) In the above-described aspect (1), the
concave grooves formed in the front and the rear of both
sides of the backrest are in alignment with each other in a
forward/rearward direction so that horizontal cross-
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sections of both sides of the backrest have a substantially
"H" shape.
[0009] According to the above-described configuration,
since front and rear surfaces of both sides of the backrest
are symmetrical in the forward/rearward direction, the
mounting members of the optional member can be inverted in
a forward/rearward direction to be mounted, and mounting
aspects of the optional member can be diversified.
[0010] (3) Concave grooves recessed rearward and
oriented in an upward/downward direction are formed in a
front surface of a backrest, and portions of mounting
members installed at both sides of an optional member are
engaged with the concave grooves to mount the optional
member on the backrest.
[0011] According to the above-described configuration,
the concave grooves with which the portions of the mounting
members of the optional member are engaged are specified to
be in the front surface of the backrest, the same
operations and effects as the invention of the aspect (1)
can be accomplished.
[0012] (4) Concave grooves recessed forward and
oriented in an upward/downward direction are formed in a
rear surface of a backrest, and portions of mounting
members installed at both sides of an optional member are
engaged with the concave grooves to mount the optional
member on the backrest.
[0013] According to the above-described configuration,
the concave grooves with which the portions of the mounting
members of the optional member are engaged are specified to
be in the rear surface of the backrest, the same operations
and effects as the invention of the aspect (1) can be
accomplished.
[0014] (5) In any of the above-described aspects (1) to
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(4), any one of upper and lower ends of the concave grooves
in the backrest is blocked by a blocking piece.
[0015] According to the above-described configuration,
the blocking piece can prevent the mounting members of the
optional member from being separated upward or downward
from the backrest.
[0016] (6) In any of the above-described aspects (1) to
(5), the backrest comprises a pair of left and right side
rods and a back plate connecting the side rods and having a
forward/rearward directional thickness smaller than that of
both of the side rods, and the concave grooves are formed
on both of the side rods.
[0017] According to the above-described configuration,
with no decrease in strength of both sides of the backrest
at which the mounting members of the optional member are
installed, the left and right side rods and the back plate
can be integrally formed using the same material and the
back plate can have flexibility.
[0018] (7) In any of the above-described aspects (1) to
(6), convex portions or concave portions are formed in
inner surfaces of the concave grooves, and the portions of
the mounting members are engaged with the convex portions
or the concave portions.
[0019] According to the above-described configuration,
since the convex portions or the concave portions formed in
the inner surfaces of the concave grooves are engaged with
the portions of the mounting members, movement of the
mounting members of the optional member along the concave
grooves can be prevented.
[0020] (8) In any of the above-described aspects (1) to
(7), a plurality of convex portions or concave portions are
formed in the inner surfaces of the concave grooves at
predetermined intervals in the upward/downward direction,
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and the portions of the mounting members are selectively
engaged with the convex portions or the concave portions,
so that the optional member is installed at the backrest in
the upward/downward direction in a manner capable of
5 adjusting a mounting position.
[0021] According to the above-described configuration,
as the portions of the mounting members are selectively
engaged with the plurality of convex portions or concave
portions, mounting positions of the optional members can be
adjusted to a plurality of heights.
[0022] (9) In the above-described aspect (8), the
mounting members of the optional member comprise
surrounding pieces extending outward from side ends of the
optional member and surrounding side ends of the backrest,
elastic members installed at the surrounding pieces, and
engaging claws installed at ends of any one of upper and
lower front ends of the surrounding pieces and fitted to
the concave grooves of the backrest to be selectively
engaged with the plurality of convex portions or concave
portions formed in the concave grooves, so that the
optional member can be locked to the backrest at the
plurality of heights, and wherein the engaging claws are
biased by the elastic members in a direction of engaging
the mounting members with the convex portions or the
concave portions with respect to the backrest, so that the
engaging claws can be separated from the convex portions or
the concave portions by moving the optional member against
the biasing force.
[0023] According to the above-described configuration,
in addition to adjusting the mounting position of the
optional member to the plurality of heights, since the
optional member is moved to resist the biasing forces of
the elastic members, the engaging claws are separated from
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the convex portions or the concave portions. In this state,
after moving the mounting members along the concave grooves
upward and downward, as the engaging claws are engaged with
another of the convex portions or concave portions, the
mounting position of the optional member can be simply
changed.
[0024] (10) In any of the above-described aspects (1) to
(8), the mounting members of the optional member comprise
surrounding pieces extending outward from side ends of the
optional member and surrounding side ends of the backrest
and elastic members installed at the surrounding pieces, at
least one of the front ends of the surrounding pieces and
the elastic members is engaged with the concave grooves of
the backrest, and the side ends of the backrest are
sandwiched by the front ends of the surrounding pieces and
the elastic members.
[0025] According to the above-described configuration,
since at least one side of the front ends of the
surrounding pieces and the elastic members is engaged with
the concave grooves of the backrest, movement of the
mounting members in the leftward/rightward direction is
restricted, and in this state, the side ends of the
backrest can be compressively gripped by the front ends of
the surrounding pieces and the elastic members from front
and rear sides thereof.
[0026] (11) In any of the above-described aspects (1) to
(10), the optional member is any one or a plurality of a
hanger for hanging clothes, a headrest, an armrest, and a
lumbar support.
[0027] According to the above-described configuration,
one or more of the optional members having different
functions can be simply installed at the backrest as a
single or a combined assembly, diversifying the chair.
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Advantageous Effects of Invention
[0028] According to the present invention, it is
possible to provide the chair in which the optional member
can be stably and securely mounted with a simple structure,
and the mounting position of the optional member in the
upward/downward direction can be easily adjusted, and
further, after the optional member is dismounted, a good
appearance of the backrest can be maintained.
Brief Description of Drawings
[0029] FIG. 1 is a side view of an embodiment of a chair
of the present invention.
FIG. 2 is a rear view of the chair shown in FIG. 1.
FIG. 3 is a plan view of the chair shown in FIG. 1.
FIG. 4 is an exploded perspective view of a backrest
when viewed from a diagonally forward side.
FIG. 5 is an exploded perspective view of a hanger
when viewed from a diagonally forward side.
FIG. 6 is an enlarged transverse cross-sectional plan
view taken along line VI-VI of FIG. 2.
FIG. 7 is an enlarged longitudinal cross-sectional
side view taken along line VII-VII of FIG. 2.
FIG. 8 is an enlarged transverse cross-sectional plan
view taken along line VIII-VIII of FIG. 2.
FIG. 9 is an exploded perspective view of a mounting
portion of a hanger when viewed from a diagonally rearward
side.
Description of Embodiments
[0030] Hereinafter, an embodiment of the present
invention will be described with reference to the
accompanying drawings.
As shown in FIGS. 1 to 3, a chair includes a leg body
3 having radial five leg rods 2, each of which is provided
with a caster 1 at a leading end thereof. An expandable
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leg column 4 that includes a gas spring (not shown) is
vertically installed at the center of the leg body 3, and a
rear portion of a support base 5 is fixed to an upper end
of the leg column 4.
[0031] The support base 5 has a substantially hollow box
shape with an upper surface open, and an opening of the
upper surface is covered by a detachable cover 5a.
[0032] While a biasing means configured to bias a
backrest 6 in an erection direction, i.e., a forward
direction, and a biasing means configured to bias a seat 7
supported by the support base 5 in the forward direction
(neither shown) are installed in the support base 5, these
are not directly related to the present invention, and thus,
illustration and detailed description thereof will be
omitted.
[0033] The backrest 6 is, as shown in FIG. 4, supported
by a pair of left and right backrest support rods 9 and 9
having an L-shape when viewed from the side and
intermediate curved portions thereof being connected by a
connecting plate 8 that is oriented in the
leftward/rightward direction.
Front ends of the backrest support rods 9 and 9 are
pivotally coupled to the support base 5 using a
leftward/rightward directional shaft 10. The backrest
support rods 9 and 9 and the backrest 6 can be pivoted
about the shaft 10 in the forward/rearward direction or can
be stopped at a predetermined rearward-inclined angle by an
operation of a gas spring 11 (see FIG. 1), front and rear
ends of which are connected to a rear end of the support
base 5 and the connecting plate 8.
[0034] As shown in FIG. 4, the backrest 6 includes a
pair of left and right side rods 12 and 12, and a back
plate 13 that connects the side rods 12 and 12 and has a
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smaller forward/rearward directional thickness than that of
the side rods 12 and 12.
An upper half 13a of the back plate 13 is joined to
the vicinity of front edges of the side rods 12 and 12, and
similarly, a lower half 13b is joined to the vicinity of
rear edges of the side rods 12 and 12, so that a horizontal
step portion (not shown) is formed therebetween.
Preferably, the side rods 12 and 12 and the back plate
13 are formed of a hard synthetic resin material and are
integrally formed.
[0035] As described above, since the backrest 6 includes
the pair of left and right side rods 12 and 12 and the back
plate 13 connecting the side rods 12 and 12 and having a
smaller forward/rearward directional thickness than that of
the side rods 12 and 12, both sides of the backrest 6 on
which mounting members 22 and 22 of a hanger 21 described
below are installed are not reduced in strength, the left
and right side rods 12 and 12 and the back plate 13 can be
integrally formed of the same material, and the back plate
13 can be given flexibility.
[0036] The upper half 13a of the back plate 13 is
provided with a plurality of holes 14 elongated in the
upward/downward direction so as to increase flexibility.
In addition, a plurality of ribs 15 are formed on
front lateral portions of the lower half 13b of the back
plate 13 to increase rigidity.
[0037] The backrest 6 is supported by the backrest
support rods 9 and 9 such that upper ends of the left and
right backrest support rods 9 and 9 are inserted between
the left and right ribs 15 and 15 on the front surface of
the lower half 13b of the back plate 13, the connecting
plate 8 is fixed to the lower half 13b of the back plate 13
using mounting members (not shown), and front surfaces
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thereof are covered by a front cover plate 16 having
substantially the same shape as the lower half 13b of the
back plate 13 in a state in which the front surface of the
front cover plate is aligned with a front surface of the
5 upper half 13a of the back plate 13.
Further, a front surface of the front cover plate 16,
a front surface of the upper half 13a of the back plate 13,
and a rear surface of the upper half 13a of the back plate
13 are covered by a cushion material 17, which is folded in
10 half.
[0038] A pair of front and rear concave grooves 18 and
19, which are recessed rearward and forward and oriented in
the upward/downward direction, are formed in front and rear
surfaces of the left and right side rods 12 and 12 of the
backrest 6 in alignment with each other in the
forward/rearward direction, so that a horizontal cross-
section of each side rod 12 in which the concave grooves 18
and 19 are formed has a substantially "H" shape, as shown
in FIG. 6.
[0039] Upper and lower ends of the concave grooves 18
and 19 in the front and the rear of each side rod 12 are
closed by blocking pieces 18a, 18b, 19a and 19b. Thereby,
the mounting members 22 and 22 described below are
prevented from being separated upward or downward from the
backrest 6.
In addition, any one of the upper blocking pieces 18a
and 19a and the lower blocking pieces 18b and 19b may be
omitted, and thereby any one of the upper and lower ends of
the concave grooves 18 and 19 may be open in an upward or
downward direction.
[0040] As shown in FIG. 7, a plurality of convex
portions 20, each of which has a triangle shape when viewed
from the side with an upper end surface being horizontal,
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are formed on a groove bottom surface of the front concave
groove 18 in the upward/downward direction at predetermined
intervals.
Incidentally, instead of the convex portions 20, a
plurality of concave portions (not shown), each of which
has a triangle shape when viewed from the side with a lower
end surface being horizontal, may be provided.
[0041] Engaged with the concave grooves 18 and 19 formed
in the front and the rear of the left and right side rods
12 and 12 are portions of the mounting members 22 and 22
installed at both sides of the hanger 21 shown in FIG. 5,
which is the optional member for hanging clothes, and thus
the hanger 21 is mounted on the backrest 6 and disposed on
a rear surface side of the backrest 6.
[0042] Each mounting member 22 of the hanger 21 includes
a surrounding piece 23 extending outward from a side end of
the hanger 21 and surrounding the side end of the backrest
6 from a rear surface side to a front surface side, and an
elastic member 25 detachably fixed to an inner corner of a
rear side of the surrounding piece 23 using a bolt/nut 25d.
[0043] An engaging claw 24, which faces rearward and has
a triangle shape when viewed from the side with a lower end
being horizontal, is formed at an upper portion of a front
end of the surrounding piece 23 rolling around the front
surface of each side rod 12, and the engaging claw 24 is
fitted into the concave groove 18 in the front surface of
the side rod 12 to be selectively engaged with the
plurality of convex portions 20 formed in the concave
groove 18, locking the hanger 21 to the backrest 6 at a
plurality of heights.
[0044] As shown in FIGS. 7 to 9, the elastic member 25
includes a mounting portion 25a fixed to the surrounding
piece 23 using the bolt/nut 25d, an elastic tongue piece
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25b extending forward and upward from the mounting portion
25a and fitted into the concave groove 19 in the front
surface of each side rod 12 to be in pressure-contact with
a groove bottom surface, and a contact piece 25c extending
forward and downward from the mounting portion 25a and
having a front end in contact with a side edge of the
concave groove 19 in the rear surface of each side rod 12.
[0045] Because the front edge of the contact piece 25c
of the elastic member 25 is in contact with the side edge
of the concave groove 19 in the rear surface of each side
rod 12 and the elastic tongue piece 25b is fitted into the
concave groove 19 in the front surface of the side rod 12
to be in pressure-contact with the groove bottom surface,
the engaging claw 24 is biased to the groove bottom surface
of the concave groove 18 in the front surface of the side
rod 12 to be in pressure-contact therewith, and each side
rod 12 is sandwiched by the engaging claw 24 and the
elastic tongue piece 25b and the contact piece 25c of the
elastic member 25 from front and rear sides thereof.
Further, because a lower edge of the engaging claw 24 is in
contact with any one of the plurality of convex portions 20
in the concave groove 18 to be engaged therewith, the left
and right mounting members 22 and 22 are firmly engaged
therewith without being easily lowered in order to stably
and strongly support the hanger 21.
[0046] When a mounting position of the hanger 21 is to
be adjusted in the upward/downward direction, the hanger 21
is pivoted forward or pushed forward against the biasing
force using a lower end thereof as a pivot point, as shown
in a two-dot chain line of FIG. 7, while the elastic tongue
piece 25b is elastically deformed.
Then, the engaging claw 24 is pivoted forward using a
front lower end of the contact piece 25c or an inner edge
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of a lower end of a front portion of the surrounding piece
23 as a pivot point, and separated forward from the convex
portions 20.
In this state, the entire hanger 21 may be moved
upward or downward to engage the engaging claw 24 with any
of the upper and lower convex portions 20.
[0047] Incidentally, in moving the hanger 21 downward,
the hanger 21 is returned to its original backward inclined
posture and then lowered, so that the engaging claw 24 is
naturally engaged with the lower convex portion 20.
In moving the hanger 21 upward, even when the hanger
21 is returned to its original backward inclined posture
and then raised, the engaging claw 24 can ride over the
lower edge, which is inclined forward and upward, of the
upper convex portion 20, to be pushed forward, and then is
engaged with the upper surface of the convex portion 20.
[0048] In this example, the hanger 21 includes the pair
of mounting members 22 and 22 installed at both left and
right sides of the backrest 6, a pair of support frames 26
and 26 extending from the mounting members 22 and 22 and
facing inward each other in a rear surface of the backrest
6, a pair of tilted erection frames 27 and 27 extending
toward higher than inner ends of the support frames 26 and
26 and enlarging outward from each other, and an upper
frame 28 having ends connected to both upper ends of the
tilted erection frames 27 and 27 and facing in the
leftward/rightward direction, wherein at least the tilted
erection frames 27 and 27 and the upper frame 28 are formed
of an elastically deformable material.
[0049] In addition, both ends of an auxiliary frame 29
disposed under the upper frame 28 and oriented in the
leftward/rightward direction are connected to the left and
right tilted erection frames 27 and 27.
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In this example, the upper frame 28 is curved upward
in an arc shape when viewed from a rear side, the auxiliary
frame 29 is curved downward in an arc shape when viewed
from a rear side, and the left and right ends of the upper
frame 28 and the auxiliary frame 29 are connected to the
upper ends of the left and right tilted erection frames 27
and 27 to be coupled to each other.
[0050] Furthermore, a middle portion of the auxiliary
frame 29 is positioned forward compared to a middle portion
of the upper frame 28.
[0051] The hanger 21 may be configured such that the
surrounding pieces 23 and 23 of the mounting members 22 and
22, the support frames 26 and 26, the tilted erection
frames 27 and 27, the upper frame 28 and the auxiliary
frame 29 are integrally formed of a hard synthetic resin
material, and that only the elastic members 25 and 25 are
formed of a separate material and are mounted on the
surrounding pieces 23 and 23 using the bolt/nut 25d.
[0052] Since the mounting members 22 and 22 of the
hanger 21 are installed at the left and right sides of the
backrest 6, stress is not concentrated to a center of the
backrest 6 but distributed to left and right sides, and
thus, the hanger 21 can stably support clothes, etc., with
no lateral shaking, and the left and right mounting members
22 and 22 can be reduced in size.
[0053] In addition, a rear surface shape of the hanger
21 when the hanger 21 is installed at the backrest 6 is a
unique shape in which two Z-shapes face each other to
provide a good style, and further, there is no remaining in
the backrest 6 such as a screw hole, etc., even when the
hanger 21 is mounted or even after the hanger 21 is
dismounted, maintaining a good appearance.
[0054] Moreover, as at least the tilted erection frames
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27 and 27 and the upper frame 28 are formed of an
elastically deformable material, when a load such as
clothes, etc., is applied to the upper frame 28, the tilted
erection frames 27 and 27 and the upper frame 28 are
5 elastically deformed, the left and right support frames 26
and 26 cause moment to be pivoted downward using the
mounting members 22 and 22 as a pivot point, specifically,
using a portion at which a front end of the contact piece
25c of the elastic member 25 is in contact with the rear
10 surface of the side rod 12 as a pivot point, the mounting
members 22 and 22 are strongly engaged with both sides of
the backrest 6 by the moment, and coupling strength between
the mounting members 22 and 22 and the backrest 6 can be
increased.
15 [0055] Since the upper frame 28 is curved upward in an
arc shape when viewed from a rear side, the upper frame 28
can be easily bent by a load from above to distribute the
stress.
[0056] In addition, since the auxiliary frame 29 is
curved downward in an arc shape when viewed from a rear
side, accessories of clothes such as a necktie, a muffler,
a stole, and so on, can be hung on the auxiliary frame 29
to improve convenience, and since the accessories of the
clothes hung on the auxiliary frame 29 are gathered in a
middle portion of the auxiliary frame 29, they can be
easily pulled out even when a jacket is hung on the upper
frame 28.
[0057] Furthermore, since the middle portion of the
auxiliary frame 29 is positioned forward compared to the
middle portion of the upper frame 28, the accessories of
the clothes can be easily hung on and pulled out from the
auxiliary frame 29 even when the jacket is hung on the
upper frame 28.
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[0058] Since the left and right mounting members 22 are
installed at both sides of the backrest 6 to enable
adjustment of the mounting position, when the hanger 21 is
not in use, the upper frame 28 is disposed at a lowered
position equal to or lower than the upper end of the
backrest 6, and thus, the hanger 21 is not encumbered. In
addition, when the hanger 21 is in use, as the upper frame
28 is disposed at a raised position higher than the upper
end of the backrest 6, the clothes, etc., can be easily
hung on the hanger 21 and lower ends of the clothes, etc.,
are not dragged on a floor.
[0059] In the illustrated example, a pair of left and
right armrests 30 and 30 are mounted on both side surfaces
of the support base 5. A member having the same shape as
the mounting member 22 inverted in a forward/rearward
direction may be mounted on a rear end of the armrest 30,
and the member may be mounted on each side rod 12 in a
relation reversed with respect to the above case, so that
the armrests 30 can be mounted on both sides of the
backrest 6 in a height-adjustable manner.
[0060] As described above, the optional member may be a
headrest, a lumbar support, and so on, in addition to the
hanger 21 and the armrest. The portions of the mounting
members 22 and 22 provided at both sides of any one or a
plurality of members are engaged with the concave grooves
18 and 19 formed at any one surface of the front and rear
surfaces of the left and right sides of the backrest 6 to
be mounted on the backrest 6. Thus, these optional members
can be stably and securely mounted on the backrest 6 with a
simple structure, and at the same time, the optional member
can be mounted with the same structure at any position
(height) along the concave grooves 18 and 19. Accordingly,
the mounting position of the optional member in the
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upward/downward direction can be easily adjusted.
In addition, after the optional member is dismounted,
since no element of the mounting structure such as a screw
hole, etc., remains, the good appearance of the backrest
can be maintained.
Furthermore, various optional members having different
functions can be installed at the backrest as a single or a
combined assembly, diversifying the chair.
[0061] The present invention is not limited to the
above-described embodiment but may be modified in the
following various configurations.
(1) The engaging claw 24 of the mounting member 22 is
fitted into the concave groove 18 or 19 of each side rod 12,
in which only one of the front and rear concave grooves 18
and 19 is provided and the other is omitted, the elastic
tongue piece 25b and the contact piece 25c of the elastic
member 25 are in pressure-contact with any one of the front
and rear surfaces of the side rod 12 with no concave groove,
and each side rod 12 is sandwiched by the engaging claw 24
and the elastic tongue piece 25b and the contact piece 25c
of the elastic member 25 from front and rear side thereof,
supporting the hanger 21.
[0062] (2) The convex portions 20 are omitted, the
engaging claw 24 is fitted into the concave groove 18 to be
in contact with the groove bottom surface of the concave
groove 18, and each side rod 12 is sandwiched by the
engaging claw 24 and the elastic tongue piece 25b and the
contact piece 25c of the elastic member 25 from front and
rear side thereof, supporting the hanger 21.
[0063] (3) The engaging claw 24 is formed at the lower
portion of the front end of the surrounding piece 23 rolled
around the front surface of each side rod 12, relating
thereto, the elastic tongue piece 25b of the elastic member
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25 is formed to extend forward and downward from the
mounting portion 25a, the contact piece 25c is formed to
extend forward and upward from the mounting portion 25a,
and thus, the engaging claw 24 is separated forward from
the convex portions 20 by pivoting the optional members
including the hanger 21, rearward and downward.
Reference Signs List
[0064] 1 CASTER
2 LEG ROD
3 LEG BODY
4 LEG COLUMN
5 SUPPORT BASE
5a COVER
6 BACKREST
7 SEAT
8 CONNECTING PLATE
9 BACKREST SUPPORT ROD
10 SHAFT
11 GAS SPRING
12 SIDE ROD
13 BACK PLATE
13a UPPER HALF
13b LOWER HALF
14 ELONGATED HOLE
15 RIB
16 FRONT COVER PLATE
17 CUSHION MATERIAL
18, 19 CONCAVE GROOVE
18a, 18b, 19a, 19b BLOCKING PIECE
20 CONVEX PORTION
21 HANGER (OPTICAL MEMBER)
22 MOUNTING MEMBER
23 SURROUNDING PIECE
CA 02778166 2012-04-18
Docket No. POKA-12025-PCT
19
24 ENGAGING CLAW
25 ELASTIC MEMBER
25a MOUNTING PORTION
25b ELASTIC TONGUE PIECE
25c CONTACT PIECE
26 SUPPORT FRAME
27 TILTED ERECTION FRAME
28 UPPER FRAME
29 AUXILIARY FRAME
30 ARMREST