JP2004340358A - Damping force adjusting device for hydraulic shock absorber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the construction of components of a damping force adjusting mechanism for a hydraulic shock absorber and standardize the components to be reduced in cost and assembling processes. <P>SOLUTION: This damping force adjusting device for the hydraulic shock absorber 5 to be externally rotated with an adjuster screw 3 comprises an adjuster needle 4B having an adjusting rod 12 provided perpendicular to a piston rod 2 in a top body 1 joined to the piston rod 2 and the adjuster screw 3 provided in the adjusting rod 12 provided at the upper end of the adjusting rod 10 for abutting thereon. Thus, it is constructed with easy-to-manufacture components. The components can be in the same shape as a piston rod top on which conventional components of the damping force adjusting mechanism are arranged in series, and thus the components and assembling processes are standardized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a damping force adjusting mechanism for a hydraulic shock absorber suitable for use mainly in a passenger car or the like.
[0002]
[Prior art]
BACKGROUND ART Conventionally, as a damping force adjusting mechanism of a hydraulic shock absorber, there is generally one in which a piston rod and damping force adjusting mechanism components are arranged in series (for example, FIG. 1 of Patent Document 1). FIG. 11 is a side sectional view of a hydraulic shock absorber having a damping force adjusting mechanism in which a piston rod and damping force adjusting mechanism components are arranged in series. The hollow piston rod 2 passes through the through hole of the upper mount 14, and the upper end of the piston rod 2 is fixed to the upper mount 14 by a nut or the like (not shown). An adjusting screw 3 is screwed to the upper end of the adjusting rod 10 in the hollow piston rod 2, and is fitted to the rotating part of the actuator 35 screwed to the upper end of the piston rod 2. When the hydraulic shock absorber 5 is mounted on the vehicle body, a space for mounting a damping force adjusting mechanism component (for example, the actuator 35) is required above the upper mount 14.
[0003]
Patent Document 2 (for example, FIG. 1 of Patent Document 2) discloses a hydraulic shock absorber in which a piston rod using a cam and a damping force adjusting mechanism component are vertically arranged. It is used for vehicles that cannot be arranged in series.
[0004]
[Patent Document 1] JP-A-2000-205325
[0005]
[Patent Document 2] Japanese Utility Model Laid-Open No. 63-87339
[0006]
[Problems to be solved by the invention]
However, the damping force adjusting device using a cam as in Patent Document 2 has a problem that its structure is complicated. Further, since it is difficult to divert the components constituting the damping force adjusting mechanism that has been used conventionally, it is necessary to provide most of the components exclusively. For this reason, there is also a problem that it greatly hinders the common use of components. Therefore, it hinders a reduction in the unit cost of the components and a hindrance to common use of the assembling process.
[0007]
As described above, the problem with the conventional damping force adjusting device for a hydraulic shock absorber is that the damping force adjusting device in which the piston rod and the damping force adjusting mechanism components are arranged in series is difficult to use in a vehicle having a structure that is difficult to mount. The damping force adjustment device, in which the piston rod and the damping force adjustment mechanism parts are vertically arranged, has a complicated structure and requires dedicated parts, so that the manufacturing parts can be shared. And a hindrance to reducing the unit cost of parts and sharing the assembly process.
[0008]
The present invention is to solve the problem of the conventional configuration as described above, and by simplifying the structure of the damping force adjusting mechanism parts of the hydraulic shock absorber and by sharing the parts, It is an object of the present invention to realize a damping force adjusting device for a hydraulic shock absorber capable of reducing the unit cost of parts and making the assembly process common.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, the two oil chambers divided by the piston communicate with each other through a passage in the piston rod, and the opening area of the passage is adjusted by a valve provided at the end of the adjusting rod. In a hydraulic shock absorber in which the Sting rod is vertically moved from the outside, an adjustment rod is provided perpendicularly to the piston rod in a top body connected to the piston rod, and a first adjuster needle provided in the adjustment rod, A second adjuster needle provided at the upper end of the adjusting rod abuts, and the first adjuster needle is adjusted by externally rotating a click fitted to the adjustment rod, thereby adjusting the adjuster needle. It is a damping force adjusting device for a hydraulic shock absorber for adjusting a sting rod. Thus, the configuration can be significantly simplified as compared with the configuration using the cam mechanism.
[0010]
The invention according to claim 2 is the damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the adjusting rod has the same shape as the top of the piston rod. As a result, it is made up of parts that can be easily manufactured, and it is possible to make the components have the same shape as the piston rod top in which the conventional damping force adjustment mechanism is arranged in series. The common use and the common use of the assembly process become possible. Furthermore, it is easy to assemble using the conventional manufacturing process, and the same parts as the conventional one, that is, the same shape of the piston rod top and the adjustment rod, and the same click as the click fitted to the conventional piston rod top are used. By using the adjusting rod, it is possible to reduce the cost.
[0011]
The invention according to claim 3 is the damping adjustment mechanism according to claim 1, wherein the adjustment rod can be set at a free angle with respect to the piston rod. As a result, the position where the adjustment rod is connected is free from the restrictions of the vehicle structure around the position where the adjustment rod is connected, and the operability of the conventional product, which is difficult to operate, can be improved.
[0012]
According to a fourth aspect of the present invention, there is provided the damping force adjusting mechanism according to the first or second aspect, wherein the adjusting rod is rotated by a stepping motor. This makes it possible to mount a conventional electrically controlled damping force adjusting device by adopting the above-described shape.
[0013]
Further, even when it is very difficult for the user to directly touch the mounting location, the adjustment of the damping force can be easily performed.
According to a fifth aspect of the present invention, the bump stop connecting the top body and the piston rod has a shape in which a bump rubber provided on the piston rod receives the input thereof uniformly. An adjusting device. Thereby, the durability of the bump rubber can be increased.
[0014]
A sixth aspect of the present invention is a shock absorber in which the damping force adjusting device according to the first, second, third, and fourth aspects is arranged in parallel with a spring.
According to the present invention, the two oil chambers divided into the piston communicate with each other through a passage in the piston rod, and an opening area of the passage is adjusted by a valve provided at an adjusting rod end, The adjusting rod is a hydraulic shock absorber that is vertically moved from the outside. In the hydraulic shock absorber, a top body coupled to an upper end of the piston rod, an adjustment rod provided in the top body perpendicular to the piston rod, A first adjuster needle provided in the rod, and a second adjuster needle provided at an upper end of the adjusting rod, wherein the first adjuster needle and the second adjuster needle are in contact with each other; By rotating the click of the first adjuster needle fitted to the adjustment rod from the outside, the A damping force adjusting apparatus of a hydraulic shock absorber and adjusting the Guroddo.
[0015]
According to the seventh aspect of the present invention, by joining the top body to the piston rod, the adjustment rod can be provided perpendicular to the piston rod. Further, by rotating the first adjuster needle provided in the adjustment rod from the outside, the operation of operating the second adjuster needle and the adjusting rod which abuts on the first adjuster needle works, thereby reducing the damping force. This has the effect of enabling adjustment. Furthermore, by making the shape of the adjustment rod the same as the shape of the upper end portion of the conventional piston rod, the configuration can be significantly simplified as compared with the configuration using the cam mechanism and the like disclosed in Patent Document 2.
[0016]
The invention according to claim 8 is the damping force adjusting device for a hydraulic shock absorber according to claim 7, wherein the adjusting rod has the same shape as the upper end of the piston rod.
According to the eighth aspect of the present invention, in addition to the same operation and effect as the seventh aspect of the present invention, since the adjusting rod has the same shape as the upper end of the piston rod, in the prior art, the damping force adjusting mechanism component is attached. Thus, there is an effect that parts such as nuts used for the upper end of the piston rod can be used for the adjustment rod. Therefore, it is possible to configure the components using components that can be easily manufactured, and it is possible to use components in common, assemble processes in common, and reduce costs. Further, the cost can be reduced by using the same click as the conventional click fitted to the upper end of the piston rod for the adjustment rod.
[0017]
According to a ninth aspect of the present invention, the damping force of the hydraulic shock absorber according to the seventh or eighth aspect, wherein the adjusting rod can be set at a free angle with respect to the piston rod. An adjusting device.
According to the ninth aspect, it is possible to obtain the same operation and effect as those of the seventh or eighth aspect. Furthermore, the restriction from the vehicle structure around the part where the adjusting rod is connected is relieved. Then, the operation of adjusting the damping force, which was conventionally difficult due to the limitation of the vehicle structure, is facilitated, and the operability can be improved.
[0018]
The invention according to claim 10 is the damping force adjusting device for a hydraulic shock absorber according to claim 7 or 8, wherein the adjusting rod is rotated by an actuator.
According to the tenth aspect, it is possible to easily adjust the damping force even when it is extremely difficult for the user to directly touch the mounting location. In addition, by forming the adjusting rod into the shape described in claim 8, it is possible to mount a conventional electric control type damping force adjusting mechanism component (for example, an actuator) without requiring a special component. .
[0019]
The invention according to claim 11, wherein the bump stopper connecting the top body and the piston rod has a shape in which a bump rubber provided on the piston rod receives the input uniformly. It is a damping force adjusting device for a hydraulic shock absorber.
[0020]
According to the eleventh aspect, an effect of increasing the durability of the bump rubber is exerted by the action that the force received on the contact surface of the bump rubber with the bump stopper becomes uniform.
According to a twelfth aspect of the present invention, there is provided a damping device for a hydraulic shock absorber, wherein the damping force adjusting device for a hydraulic shock absorber according to the seventh to tenth aspects is arranged in parallel with a spring. According to the twelfth aspect, the same operation and effect as those of the seventh to tenth aspects can be obtained.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 10.
FIG. 1 is an external view of a first embodiment of the present invention. FIG. 2 shows an upper end portion of the piston rod 2, a bump stopper 19 screwed to the upper end portion of the piston rod 2, a top body 1 also screwed to the upper end portion of the piston rod 2, and a piston rod 2. FIG. 3 is a side sectional view of a portion of an adjustment rod 12 provided on the top body 1 so as to be vertical. FIG. 3 is a side sectional view of the shell pipe 7 and the vehicle body mounting member 13.
[0022]
2, the top body 1 has an upper end portion passing through a through hole at the center of the upper mount 14, and is fixed to the upper mount 14 and a vehicle body (not shown) by a nut or the like. The piston rod 2 is screwed to the bump stopper 19 and the top body 1. The adjusting rod 12 is screwed to the top body 1 in a direction perpendicular to the piston rod 2. A hollow piston rod is used for the piston rod 2, and an adjusting rod 10 penetrates inside the piston rod 2.
[0023]
Here, the adjustment rod 12 has the same shape as the upper end of the conventional piston rod 2. Thereby, a screw member or a joining member such as a nut for screwing the piston rod 2 that has passed through the through hole of the upper mount 14 shown in FIG. Conventional components such as damping force adjustment mechanism components (for example, the actuator 35 and the click 41) can be used for the adjustment rod 12 without special processing. Therefore, the parts can be shared, and the assembly process of the parts can be shared with the conventional one.
[0024]
An adjusting needle 4 </ b> A is in contact with the upper end of the adjusting rod 10. Therefore, the adjusting rod 10 moves in conjunction with the adjuster needle 4A. Further, the upper end of the adjuster needle 4A protruding from the upper end of the piston rod 2 and the upper end of the adjuster needle 4B also protruding from the adjustment rod 12 are in contact with each other. The adjuster needle 4 </ b> B abuts or is fixed to the adjuster screw 3 penetrating the inside of the adjustment rod 12. Further, the adjust screw 3 is fitted to the click 41.
[0025]
When the damping force is adjusted, the adjustment is performed by rotating the click 41. When the click 41 is rotated, the adjust screw 3 fitted to the click 41 rotates. Further, the adjuster needle 4B which is in contact with or is fixed to the adjuster screw 3 moves left and right. The adjuster needle 4A in contact with the adjuster needle 4B moves up and down in conjunction with the rotation of the click 41 by sliding of the contact portion. Eventually, the adjusting rod 10 in contact with the adjuster needle 4A moves up and down in conjunction with the rotation of the click 41, and the amount of oil passing through the bypass flow path 32 at the lower end of the adjusting rod 10 is reduced. The damping force is adjusted (see FIG. 3).
[0026]
2 and 3, the other end of the piston rod 2 screwed to the top body 1 and the bump stopper 19 is fixed to a piston that divides the inside of the cylinder into two oil chambers. A needle valve 11 is in contact with the lower end of the adjusting rod 10 inside the piston rod 2. The needle valve 11 is moved up and down together with the adjuster needle 4A and the adjusting rod 10 in conjunction with the rotation of the click 41. By moving the needle valve 11 up and down, the amount of oil passing through the bypass passage 32 can be changed.
[0027]
Therefore, when adjusting the damping force, by rotating the click 41, the adjust screw 3 fitted to the click 41 rotates. When the adjust screw 3 rotates, the adjuster needle 4B that is in contact with or fixed to the adjust screw 3 moves left and right. Further, the adjuster needle 4A in contact with the adjuster needle 4B moves up and down in conjunction with the displacement of the contact portion. The adjusting rod 10 in contact with the adjuster needle 4A moves up and down in conjunction with the rotation of the click 41, and the amount of oil passing through the bypass flow path 32 at the lower end of the adjusting rod 10 changes. The damping force is adjusted.
[0028]
When the piston rod 2 moves up and down in the direction of the central axis, the oil in the two upper and lower oil chambers (oil chamber 9A and oil chamber 9B) of the cylinder divided into the piston 8 is transferred from one oil chamber to the other oil chamber. It moves through the contraction side flow path 29 or the extension side flow path 30 and the bypass flow path 32. By rotating the click 41 and adjusting the needle valve 11 up and down, the flow rate of the oil passing through the bypass passage 32 is adjusted, and as a result, the damping force can be adjusted.
[0029]
Here, when the hydraulic shock absorber 5 is in a compressed state, the impact from the road surface is absorbed by compressing the bump rubber 20 provided on the piston rod 2 between the bump stop 19 and the ring nut 17.
FIG. 4 shows a plan view and a sectional view of the bump stopper 19 used in the present invention. A component corresponding to a conventional bump stopper is formed of a bolt or the like, and a contact surface with the bump rubber 20 is narrow. Therefore, when the bump rubber 20 contacts the bump stopper, the contact surface may be damaged. On the other hand, the bump stopper 19 used in the present invention has the same size as the contact surface of the bump rubber 20 as shown in the cross-sectional view, so that when the bump rubber 20 contacts the bump stopper 19, Damage can be greatly reduced and durability can be increased.
[0030]
FIG. 5 is a schematic diagram showing the second embodiment. The embodiment shown in FIG. 5 is different from the embodiment shown in FIG. 1 in that the actuator 35 is screwed to the top body 1 in a direction perpendicular to the piston rod 2. 6 shows an upper end of the piston rod 2 shown in FIG. 5, a bump stopper 19 screwed to the upper end of the piston rod 2, a top body 1 also screwed to the upper end of the piston rod 2, and the piston rod 2. FIG. 4 is a side sectional view of a portion of an adjustment rod 12 provided vertically to the top body 1 vertically.
[0031]
6, as in FIG. 1, the top body 1 is screwed to an upper mount 14 for fixing the upper end of the hydraulic shock absorber 5 to a vehicle body (not shown). The piston rod 2 is screwed to the bump stopper 19 and the top body 1. Further, the adjustment rod 12 is screwed to the top body 1 in a direction perpendicular to the piston rod 2.
[0032]
The actuator 35 (for example, a stepping motor) is screwed to the adjustment rod 12 screwed to the top body 1, and the rotating part of the actuator 35 and the adjusting screw 3 are fitted or fixed. The control line (not shown) of the actuator 35 is wired, for example, inside the vehicle, and the damping force can be adjusted by operating the actuator 35 from inside the vehicle.
[0033]
As shown in FIG. 6, a hollow piston rod is used for the piston rod 2, and an adjusting rod 10 is penetrated inside the piston rod 2. An adjusting needle 4 </ b> A is in contact with the upper end of the adjusting rod 10. The adjusting rod 10 moves up and down in conjunction with the displacement of the adjuster needle 4A. The upper end of the adjuster needle 4 </ b> A abutting on the upper end of the adjusting rod 10 protrudes from the upper end of the piston rod 2. The upper end of the adjuster needle 4A and the upper end of the adjuster needle 4B, which also protrude from the adjustment rod 12, have a line contact shape. The adjuster needle 4 </ b> B abuts or is fixed to the adjust screw 3 that penetrates the inside of the adjustment rod 12, and the adjust screw 3 is fitted or fixed to the rotating part of the actuator 35.
[0034]
When adjusting the damping force, the adjustment is performed by operating the actuator 35. When the actuator 35 is operated, the adjust screw 3 fitted or fixed to the rotating portion of the actuator 35 rotates in conjunction with the operation of the actuator 35. When the adjuster screw 3 rotates, the adjuster needle 4B that is in contact with or fixed to the adjuster screw 3 also moves left and right in conjunction with it.
[0035]
The adjuster needle 4A that is in contact with the adjuster needle 4B moves up and down in conjunction with the adjuster needle 4B by sliding the contact portion. Finally, the adjusting rod 10 in contact with the adjuster needle 4A moves up and down in conjunction with the actuator 35, and the amount of oil passing through the bypass flow path 32 at the lower end of the adjusting rod 10 changes. The damping force is adjusted (see FIG. 3 because the damping force can be adjusted by displacing the adjusting rod 10 as in FIG. 3).
[0036]
7 and 8 show schematic views of the third embodiment. FIGS. 7 and 8 show an embodiment in which the adjustment rod 12 screwed to the top body 1 in FIG. 1 is not perpendicular to the piston rod 2.
FIG. 7 shows the hydraulic shock absorber 5 in which the adjustment rod 12 and the actuator 35 are screwed to the top body 1 in a state of being inclined upward. FIG. 8 shows the hydraulic shock absorber 5 in which the adjustment rod 12 and the actuator 35 are screwed to the top body 1 in a state of being inclined downward. Accordingly, even when there is a vehicle body part that hinders the mounting of the damping force adjustment mechanism component, such as the arm 37 shown in FIG. 7 and the protrusion 38 shown in FIG. Can be mounted.
[0037]
Here, in FIGS. 7 and 8, the actuator 35 is screwed to the adjustment rod 12, but the click 41 may be fitted or fixed to the adjustment rod 12. Further, the adjustment rod 12 screwed to the top body 1 only needs to be in the range of 0 to 180 degrees with respect to the piston rod 2, and is not limited to the angles shown in FIGS.
[0038]
FIG. 9 shows the upper end of the piston rod 2 and the bump stopper 19 screwed to the upper end of the piston rod 2 of the third embodiment shown in FIG. 7, and the top body 1 also screwed to the upper end of the piston rod 2. 3 shows a side cross-sectional view of a portion of the adjustment rod 12 provided at about 120 degrees with respect to the piston rod 2 (for a side cross-sectional view of the shell pipe 7 and the vehicle body mounting member 13, see the description of FIG. 3). ).
[0039]
The upper end of the top body 1 passes through a through hole of an upper mount 14 for fixing the upper end of the hydraulic shock absorber 5 to a vehicle body (not shown), and is screwed with a nut or the like. The piston rod 2 is screwed to the bump stopper 19 and the top body 1. Further, an adjustment rod 12 is screwed through the top body 1 at an angle of about 120 degrees with respect to the piston rod 2. A hollow piston rod is used as the piston rod 2, and an adjusting rod 10 is penetrated inside the piston rod 2.
[0040]
An adjusting needle 4A is in contact with the upper end of the adjusting rod 10, and moves together with the adjusting rod 10 in conjunction with the adjusting needle 4A. Further, the upper end of the adjuster needle 4A protrudes from the upper end of the piston rod 2 and has a shape that comes into contact with the upper end of the adjuster needle 4B that also protrudes from the adjustment rod 12. The adjuster needle 4B abuts or is fixed to the adjust screw 3 penetrating through the inside of the adjustment rod 12, and the adjust screw 3 is fitted or fixed to the click 41.
[0041]
When the damping force is adjusted, the damping force is adjusted by rotating the click 41. When the click 41 is rotated, the adjust screw 3 fitted or fixed to the click 41 moves left and right in conjunction with the click 41. The adjuster needle 4A in contact with the adjuster needle 4B is displaced in conjunction with the sliding of the contact portion. Finally, the adjusting rod 10 in contact with the adjuster needle 4A moves up and down in conjunction with the click 41, and the amount of oil passing through the bypass flow path 32 at the lower end of the adjusting rod 10 changes. The damping force is adjusted.
[0042]
FIG. 10 shows a fourth embodiment. The hydraulic shock absorber 5 shown in FIG. 10 is the hydraulic shock absorber 5 shown in FIG. One end of the hydraulic shock absorber 5 is swingably fixed to the vehicle body 36 via the upper mount 14, and the other end of the hydraulic shock absorber 5 is swingably fixed to the arm 37. Similarly, one end of the spring 40 is fixed to the vehicle body 36, and the other end of the spring 40 is fixed to the arm 37. One end of the arm 37 on the side where the spring 40 is fixed is fixed to be able to swing with the vehicle body 36, and the end of the arm 37 on the side where the hydraulic shock absorber 5 is fixed is provided with a tire (not shown). Be attached.
[0043]
By the damping force generated by the hydraulic shock absorber 5, the vibration of the spring 40 provided at a place different from that of the hydraulic shock absorber 5 of the vehicle body 36 is controlled.
In the above description, the fourth embodiment has been described using the hydraulic shock absorber 5 shown in FIG. 3, but the hydraulic shock absorber 5 used in the fourth embodiment is different from the hydraulic shock absorber 5 shown in FIG. It is not limited to. The hydraulic shock absorber 5 shown in FIGS. 1, 7, and 8 may be used.
[0044]
【The invention's effect】
As described above, the present invention has an effect that the structure of the damping force adjusting mechanism can be significantly simplified as compared with the conventional one, and the components such as the conventional adjusting rod and click can be diverted as they are. It becomes possible to attach the damping force adjusting mechanism to a vehicle for which the adjusting mechanism could not be attached, and it is possible to mount a conventionally used electrically controlled damping force adjusting device.
[0045]
According to the first aspect of the present invention, since the adjusting rod is provided perpendicularly to the piston rod in the top body connected to the piston rod, it is impossible to mount the damping force adjusting mechanism component due to a problem such as the shape of the vehicle body. It becomes possible to attach the damping force adjusting mechanism component to a vehicle that has been there. Further, the structure of the damping force adjusting mechanism component can be significantly simplified as compared with the related art.
[0046]
According to the second aspect of the present invention, the same shape as the upper end portion of the piston rod makes it possible to use a conventional component such as a click as it is, thereby enabling a common component and a common assembly process. Become. Further, the cost of parts can be significantly reduced. Further, it becomes possible to attach the damping force adjusting mechanism component to a vehicle in which the damping force adjusting mechanism component could not be attached due to a problem such as the shape of the vehicle body.
[0047]
According to the third aspect of the present invention, by providing the piston rod in the top body connected to the piston rod and the adjusting rod within an angle range of 0 ° to 180 ° with respect to the piston rod, the shape of the vehicle body and the like are provided. Due to the problem described above, the damping force adjustment mechanism component can be attached to a vehicle for which the damping force adjustment mechanism component could not be attached.
[0048]
According to the fourth and sixth aspects of the invention, the same effects as those of the first to third aspects can be obtained. Further, it is possible to use a conventionally used actuator.
According to the fifth aspect of the present invention, since the contact surface between the bump stopper and the bump rubber has the same shape, the problem of the durability of the bump rubber caused by the difference in the contact surface between the conventional bump stopper and the bump rubber is improved, and the problem is greatly reduced Can be improved.
[Brief description of the drawings]
FIG. 1 is an external view showing a hydraulic shock absorber according to a first embodiment.
FIG. 2 is a side sectional view of a main part of the first embodiment.
FIG. 3 is a sectional view of a piston portion applied to the first embodiment.
FIG. 4 is a sectional view and a plan view of a member according to an embodiment of the present invention.
FIG. 5 is an external view showing a hydraulic shock absorber according to a second embodiment.
FIG. 6 is a side sectional view of a main part of the second embodiment.
FIG. 7 is an external view showing a hydraulic shock absorber according to a third embodiment.
FIG. 8 is an external view showing a hydraulic shock absorber according to a third embodiment.
FIG. 9 is a side sectional view of a main part of a third embodiment.
FIG. 10 is a diagram showing a fourth implementation example of the present invention.
FIG. 11 is a diagram of a conventional example of a hydraulic shock absorber.
[Explanation of symbols]
1 ... Top body
2 ... Piston rod (hollow)
3. Adjustable screw
4A ・ ・ ・ Adjuster needle
4B ・ ・ ・ Adjuster needle
5 ... Hydraulic shock absorber
6 ... Cylinder
7 ・ ・ ・ Shell pipe
8 ... Piston
9A: Oil chamber
9B ... oil chamber
10 ・ ・ ・ Adjusting rod
11 ・ ・ ・ Needle valve
12 ・ ・ ・ Adjustment rod
13 Body mounting member
14 Upper mount
15 ... Rod guide
16 ・ ・ ・ Oil seal
17 ・ ・ ・ Ring nut
18 O-ring
19 ・ ・ ・ Bump stopper
20 ... Banprava
21 ・ ・ ・ Dust boots
22 ... Piston valve device
23 ・ ・ ・ Base valve device
24 ・ ・ ・ Compression side washer
25 Shrink valve
26 ... Extension valve
27 ··· Extension washer
28 ... nut
29 ... contraction side flow path
30 ... Extension side flow path
31 Damping force adjustment device
32 ... Bypass flow path
33A ・ ・ ・ Vertical hole in bypass channel
33B ・ ・ ・ Bypass channel side hole
34 ... O-ring
35 ... actuator
36 ・ ・ ・ Car body
37 ... arm
38 ・ ・ ・ Protrusion
39 ・ ・ ・ arm
40 ・ ・ ・ Spring
41 ... Click

Claims (12)

Two oil chambers divided into pistons communicate with each other via a passage in the piston rod, the opening area of the passage is adjusted by a valve provided at the end of the adjusting rod, and the adjusting rod is vertically moved from outside. In the hydraulic shock absorber, an adjustment rod is provided perpendicularly to the piston rod in a top body connected to the piston rod, and a first adjuster needle provided in the adjustment rod;
A second adjuster needle provided at the upper end of the adjusting rod abuts, and the first adjuster needle is adjusted by externally rotating a click fitted to the adjustment rod, thereby adjusting the adjuster needle. Hydraulic shock absorber damping force adjustment device that adjusts the sting rod. The damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the adjusting rod has the same shape as the top of the piston rod. The damping adjustment mechanism according to claim 1, wherein the adjustment rod can be set at a free angle with respect to the piston rod. 3. The damping force adjusting mechanism according to claim 1, wherein the adjusting rod is rotated by a stepping motor. 3. The damping force adjusting device according to claim 1, wherein the bump stop connecting the top body and the piston rod has a shape in which a bump rubber provided on the piston rod receives the input uniformly. 5. A shock absorber in which the damping force adjusting device according to claim 1, 2, 3, or 4 is arranged in parallel with a spring. Two oil chambers divided into pistons communicate with each other through a passage in the piston rod, and the opening area of the passage is adjusted by a valve provided at an adjusting rod end, and the adjusting rod is vertically moved from outside. In a hydraulic shock absorber operated dynamically,
A top body coupled to the piston rod upper end,
An adjustment rod provided perpendicular to the piston rod in the top body;
A first adjuster needle provided in the adjustment rod;
A second adjuster needle provided at an upper end of the adjusting rod,
The first adjuster needle and the second adjuster needle are in contact with each other, and the assuring rod is adjusted by externally rotating a click in which the first adjuster needle is fitted to the adjustment rod. A damping force adjusting device for a hydraulic shock absorber. The damping force adjusting device for a hydraulic shock absorber according to claim 7, wherein the adjusting rod has the same shape as an upper end of the piston rod. The damping force adjusting device for a hydraulic shock absorber according to claim 7, wherein the adjusting rod is set at an angle in a range of 0 to 180 degrees with respect to the piston rod. The damping force adjusting device for a hydraulic shock absorber according to claim 7, wherein the adjusting rod is rotated by an actuator. 9. The damping force adjusting device for a hydraulic shock absorber according to claim 7, wherein the bump stopper connecting the top body and the piston rod has a shape in which a bump rubber provided on the piston rod receives the input uniformly. . A damping device for a hydraulic shock absorber, wherein the damping force adjusting device according to any one of claims 7 to 10 is arranged in parallel with a spring.

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