Note: Descriptions are shown in the official language in which they were submitted.
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SHOCK ABSORBER
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a shock absorber, and more particularly to a
shock absorber which is anti-detachment.
Description of the Prior Art
A conventional shock absorber for a vehicle as disclosed in TWM392765
includes a base, a fixed axial tube and a movable axial tube. The fixed axial
tube is
screwed with the base, the movable axial tube is disposed in the fixed axial
tube and
recipro eatable along an axial direction, and through the fixed axial tube and
the base
rotate relative to each other, a length of the shock absorber can be adjusted
in
accordance with different types of vehicles. To prevent the fixed axial tube
from
rotating too much and being detached from the base, a lower position-
restricting ring
of the conventional shock absorber which is screwed with the fixed axial tube
has a
through hole, a ball member, an elastic member and a fixing pin member are
disposed in the through hole, and a lower end of the fixed axial tube has an
annular
groove. Therefore, when the fixed axial tube is rotated to make the ball
member
restrictably engaged within the annular groove, a user can be reminded that if
s/he
continues to rotate the fixed axial tube, the fixed axial tube will be
detached from the
base.
However, in the conventional shock absorber, the lower position-restricting
ring is screwed with the fixed axial tube, so the user needs to grip on the
fixed axial
tube with one hand and grips on the lower position-restricting ring with the
other
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hand so as to position the lower position-restricting ring on an end of the
base to
prevent the lower position-restricting ring and the fixed axial tube from
moving
relative to each other. Hence, the conventional shock absorber is inconvenient
to be
operated. In addition, the lower position-restricting ring is screwed with the
fixed
axial tube but not integrally connected to the base, so a distance between the
lower
position-restricting ring and the base may vary. The ball member being
restrictably
engaged in the annular groove does not mean that the fixed axial tube is about
to be
detached from the base, so a reminding function may have an error.
The present invention has arisen to mitigate and/or obviate the
afore-described disadvantages.
SUMMARY OF THE INVENTION
One aspect of the present invention is to provide a shock absorber, the
shock absorber includes an abutting assembly which can effectively remind a
user
that a first axial tube is about to be detached_ from a base. In addition, the
abutting
assembly is easy to be assembled or disassembled and has a simple structure.
To achieve the above, a shock absorber is provided, including a base, a first
axial tube, a second axial tube, a buffering structure and an abutting
assembly. The
base defines an axial direction, and the base has a through. hole radially. An
exterior
circumferential wall of the first axial tube has a recess formed radially and
near a
.. first end of the base, and the first axial tube is screwed with the base.
The second
axial tube is disposed through the first axial tube along the axial direction
and
slidable relative to the first axial tube, and the second axial tube has an
assembling
portion. The buffering structure includes an elastic member and an adjusting
ring,
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the adjusting ring is sleeved on the first axial tube and movable relative to
the first
axial tube, and the elastic member abuts against and between the assembling
portion
and the adjusting ring. The abutting assembly includes an abutting member and
an
elastic abutting member, the abutting member is disposed within the through
hole,
the elastic abutting member is disposed on the base and at least partly
located in the
through hole so as to abut the abutting member to move toward the base
normally.
When the first axial tube rotates relative to the base and the abutting member
corresponds to the recess, the abutting member is removably engaged within the
recess.
The present invention will become more obvious from the following
description when taken in connection with the accompanying drawings, which
show,
for purpose of illustrations only, the preferred embodiment(s) in accordance
with the
present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a stereogram of a preferred embodiment of the present invention;
Fig. 2 is a breakdown view of the preferred embodiment of the present
invention;
Fig. 3 is a partially-enlarged view of the preferred embodiment of the
present invention;
Fig. 4 is a cross-sectional view, taken along line A-A of Fig. 2;
Fig. 5 is a side view of the preferred embodiment of the present invention;
Figs. 6 and 7 are cross-sectional views, taken along line B-B of Fig. 5,
showing operation of the present invention;
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Fig. 8 is a cross-sectional top view of another preferred embodiment of the
present invention; and
Figs. 9 and 10 are enlarged cross-sectional view showing another preferred
=
embodiment of the present invention in operation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will be clearer from the following description when
viewed together with the accompanying drawings, which show, for purpose of
illustrations only, the preferred embodiment in accordance with the present
invention.
Please refer to Figs. 1 to 7 for a preferred embodiment of the present
invention. A shock absorber includes a base 1, a first axial tube 2, a second
axial tube
3, a buffering structure 4 and an abutting assembly 5.
The base 1 defines an axial direction 11, and the base 1 has a through hole
12 radially.
An exterior circumferential wall of the first axial tube 2 has a recess 21
radially near a first end 22 of the base 1, and the first axial tube 2 is
screwed with the
base 1.
The second axial tube 3 is disposed through the first axial tube 2 along the
axial direction 11 and slidable relative to the first axial tube 2, and the
second axial
tube 3 has an assembling portion 31. In this embodiment, the assembling
portion 31
is for being assembled to a chassis of a vehicle, and the base 1 is for being
assembled
to a wheel seat of the vehicle. In other embodiments, the assembling portion
31 is for
being assembled to the wheel seat of the vehicle, and the base 1 is for being
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assembled to the chassis of the vehicle.
The buffering structure 4 includes an elastic member 41 and an adjusting
ring 42, the adjusting ring 42 is sleeved on the first axial tube 2 and
movable relative
to the first axial tube 2, and the elastic member 41 abuts against and between
the
assembling portion 31 and the adjusting ring 42. In this embodiment, the
adjusting
ring 42 is screwed with the first axial tube 2, and a user can rotate the
adjusting ring
42 to adjust a tightness of the elastic member 41 in accordance with a driving
requirement of the vehicle.
The abutting assembly 5 includes an abutting member 51 and an elastic
abutting member 52, the abutting member 51 is disposed within the through hole
12,
and the elastic abutting member 52 is disposed on the base 1 and at least
partly
located in the through hole 12 so as to abut the abutting member 51 to move
toward
the base I normally.
When the first axial tube 2 rotates relative to the base 1, and the abutting
member 51 corresponds to the recess 21, the abutting member 51 is restrictably
engaged within the recess 21. When the abutting member 51 abuts against a wall
of
the recess 21, the abutting member 51 clanks (as shown in Fig. 7) so as to
inform the
user than if s/he continues to rotate the first axial tube 2 to move away from
the base
1, the first axial tube 2 will be detached from the base 1.
Specifically, in this embodiment, the elastic abutting member 52 is an
elastic annular piece 522, and the elastic abutting member 52 is detachably
arranged
on an exterior circumferential wall of the base 1 so as to abut the abutting
member
51 to move toward the base I normally.
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Preferably, the shock absorber further includes a position-restricting ring 61
and a positioning ring 62, the position-restricting ring 61 is sleeved on the
first axial
tube 2 and screwed with the first axial tube 2, and the position-restricting
ring 61
abuts against an end face of the base 1 along the axial direction 11 to fix
the first
axial tube 2 so as to prevent the firs axial tube 2 and the base 1 from
rotating
randomly relative to each other when the vehicle is driven. The positioning
ring 62
and the adjusting ring 42 are screwed with the first axial tube 2, the
positioning ring
62 is located on a side of the adjusting ring 42 opposite to the elastic
member 41 and
abuts the adjusting ring 2 to fix the adjusting ring 42 so as to prevent the
adjusting
ring 42 and the firs axial tube 2 from rotating randomly relative to each
other when
the vehicle is driven.
Specifically, the elastic abutting member 52 is an elastic metal annular piece
which is C-shaped, two opposite ends of an inner side of the elastic abutting
member
52 respectively have a protrusion 521, one of the two protrusions 521
restrietably
abuts against a periphery of the through hole 12 and abuts against the
abutting
member 51, the other of the two protrusions 521 abuts against a recessed hole
13 of
the exterior circumferential wall of the base 1, and through the two
protrusions 521
respectively abutting against the recessed hole 13 and the through hole 12,
the elastic
abutting member 52 can be fixed on the base 1. In addition, in this
embodiment,
when one of the two protrusions 521 abuts against the periphery of the through
hole
12 and abuts against the abutting member 51, and an end of the elastic
abutting
member 52 near the recess 21 is bent upward slightly (as shown in Fig. 6), so
it is
convenient to disassemble the elastic abutting member 52. Therefore, it is
convenient
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for the user to assemble or disassemble the abutting member 51 and the elastic
abutting member 52, and when the abutting member 51 elastically abuts against
the
wall of the recess 21, the abutting member 51 clanks to let the user know that
if s/he
continues to rotate the first axial tube 2 to move away from the base 1, the
first axial
tube 2 will be detached from the base 1.
In this embodiment, the abutting member 51 is a ball member, one of two
ends of a rotation direction of the recess 21 along the first axial tube 2 has
a first
inclined face 211, and the other of the two ends has a second inclined face
212. The
first inclined face 211 and the second inclined face 212 have different
gradients, and
in this embodiment, the first inclined face 211 is greater than the second
inclined
face 212 in gradient. When the abutting member 51 abuts against the recess 21,
and
the first axial tube 2 rotates to move away from the base 1 (that is, to
rotate
counterclockwise), the abutting member 51 abuts against the first inclined
face 211
and uneasy to be detached from the recess 21, and the user needs to apply
greater
force to rotate the first axial tube 2 to make the abutting member 51 slide
out of the
recess 21 so as to remind the user that the first axial tube 2 is about to be
detached
from the base 1. Preferably, a radial dimension of the abutting member 51 is
greater
than a greatest depth of the recess 21, and when the abutting member 51 abuts
against the recess 21, the abutting member 51 partly protrudes beyond the
recess 21.
In addition, the exterior circumferential wall of the first axial tube 2 has a
scale 24 which extends along the axial direction 11. Preferably, a distance
between
an initial scale 241 of the scale 24 and the first end 22 of the first axial
tube 2 is
20mm to 40mm, and in this embodiment, the distance is 30mm, and the recess 21
is
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between the initial scale 241 of the scale 24 and the first end 22 of the
first axial tube
2. The initial scale 241 is for the user to adjust a datum and can ensure that
the first
axial tube 2 is at least partly screwed with the base 1 so as to prevent the
first axial
tube 2 and the base 1 from swinging relative to each other due to unstable
screwing.
In this embodiment, the exterior circumferential wall of the first axial tube
2
has two cutting sections 23 opposite to each other, the two cutting sections
23 extend
along the axial direction 11, one of the two cutting sections 23 has the scale
24
which extends along the axial direction 11, the scale 24 is provided as a
reference for
the user to refer to when adjusting a height of a chassis so as to adjust the
shock
.. absorbers of the vehicle to reach a balance to keep the chassis of the
vehicle stable.
Please refer to Figs. 8 to 10 for a second embodiment of the present
invention. An elastic abutting member 52A includes a spring 523 and a pin
member
524, the pin member 524 is hollow and tubular and disposed in the through
hole, the
spring 523 and the abutting member 51 are located in the pin member 524, and
the
spring 523 elastically abuts against and between the pin member 524 and the
abutting member 51 so as to abut the abutting member 51 to move toward the
base 1.
Specifically, in this embodiment, the pin member 524 is screwed within the
through
hole (in other embodiments, the pin member 524 may be tightly fit into the
through
hole) so to be easily disassembled. Through the pin member 524 being engaged
within the through hole and the spring 523 abutting the abutting member 51 to
move
toward the base 1, the abutting member 51 can effectively abut against the
recess 21
so as to remind the user that the first axial tube 2 is about to be detached
from the
base 1.
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Given the above, in the shock absorber, it is convenient to
assemble/disassemble the abutting member and the elastic abutting member, and
when the abutting member abuts against the wall of the recess, the abutting
member
clanks so as to inform the user that if s/he continues to rotate the first
axial tube to
move away from the base, the first axial tube will be detached from the base.
The scope of the claims should not be limited by the preferred embodiments
set forth in the examples but should be given the broadest interpretation
consistent
with the description as a whole.
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