Hydraulic damping shock absorber structure

Abstract

The invention relates to the technical field of shock absorbers, in particular to a hydraulic damping shock absorber structure which comprises a hydraulic cylinder, a piston, an adjusting disc, an adjusting mechanism and a supporting plate. The hydraulic cylinder is slidably connected with a piston rod, one end of the piston rod penetrates through the hydraulic cylinder and extends into the hydraulic cylinder, and the hydraulic cylinder is filled with hydraulic oil; the piston is fixedly connected with the piston rod and provided with a plurality of flow guide holes in a penetrating mode. The adjusting disc is arranged in the hydraulic cylinder, and an adjusting hole matched with the flow guide hole is formed in the adjusting disc in a penetrating mode; the adjusting mechanism is arranged in the hydraulic cylinder; the supporting plate is arranged in the hydraulic cylinder, and the top of the supporting plate is fixedly connected with a reset spring. Through cooperative arrangement of the piston, the adjusting disc and the adjusting mechanism, when the hardness of the damper needs to be adjusted, the adjusting hand wheel is rotated to change the positions of the flow guide hole and the adjusting hole, then the size of the flow guide channel is changed, and adjustment of the hardness of the damper is achieved under the condition that the damping stroke of the damping spring is not changed.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, and particularly to a hydraulic damping shock absorber structure. Background Art

[0002] Electric bicycles have become one of the means of transportation for people due to their many advantages such as environmental protection, lightness, economy, and portability. Compared with cars, lightness, economy, and portability are their main advantages. For the comfort of electric bicycles, the role of the shock-absorbing front fork is particularly important. The front fork is the steering mechanism of an electric bicycle and consists of parts such as a live ring, a tight ring, a front fork riser, a fork shoulder cover, and the left and right legs of the front fork. The front fork riser is welded to the left and right legs of the front fork and sleeved in the liner of the riser. The weight of the electric bicycle is transmitted to the front wheel through the front fork. When the front wheel is impacted by the road surface, the impact load generated is transmitted to the frame through the front fork (or spring). The front fork has to bear a large axial load and ensure steering flexibility during driving.

[0003] Chinese Patent No. CN219096912U discloses a shock-absorbing front fork for a power-assisted electric bicycle, which includes a front fork arm frame. On both sides of the top end of the front fork arm frame, front fork side legs are respectively fixed. The bottom end of the front fork side leg extends to the outside of the front fork arm frame. A main damping shock absorber is installed at the bottom end of the front fork side leg. A front fork riser is installed at the top end of the front fork arm frame between the two groups of front fork side legs. A secondary damping shock absorber is installed between the two groups of main damping shock absorbers through a support structure. The top end of the piston rod of the secondary damping shock absorber is fixed with a top plate, and the top end of the top plate is fixedly connected to the bottom end of the front fork arm frame. The outer surface of the secondary damping shock absorber is provided with an external thread. The utility model uses the secondary damping shock absorber and the shock-absorbing spring to assist the two groups of main damping shock absorbers to automatically reset, avoid the hydraulic damper from becoming more and more sticky over time, and can adjust the damping torque of the secondary damping shock absorber and the main damping shock absorber, so that the shock-absorbing front fork can meet the usage habits of different users and road conditions.

[0004] However, the above technical solution has the following deficiencies: only by adjusting the initial compression amount of the shock-absorbing spring to change the telescopic amount of the damping shock absorber, essentially adjusting the damping hardness of the damping shock absorber by sacrificing the shock-absorbing stroke of the shock-absorbing spring, the adjustment range is small, and the practicability is poor. Summary of the Invention

[0005] The purpose of the present invention is to propose a hydraulic damping shock absorber structure for the problems existing in the background art.

[0006] The technical solution of the present invention: A hydraulic damping shock absorber structure includes:

[0007] A hydraulic cylinder, which is slidably connected with a piston rod. One end of the piston rod penetrates through the hydraulic cylinder and extends into the interior of the hydraulic cylinder. The hydraulic cylinder is filled with hydraulic oil;

[0008] A piston is movably arranged inside a hydraulic cylinder. The piston is fixedly connected to a piston rod, and a plurality of diversion holes are formed through the piston.

[0009] An adjusting disk is arranged inside the hydraulic cylinder. The adjusting disk is rotatably connected to the piston. An adjusting hole adapted to the diversion holes is formed through the adjusting disk, and a diversion channel is formed by the diversion holes and the adjusting hole.

[0010] An adjusting mechanism is arranged inside the hydraulic cylinder. One end of the adjusting mechanism is connected to the adjusting disk for rotating the adjusting disk.

[0011] A support plate is arranged inside the hydraulic cylinder. A return spring is fixedly connected to the top of the support plate, and the top end of the return spring is fixedly connected to the bottom of the adjusting disk.

[0012] Preferably, a plurality of guiding blocks are equidistantly arranged on the peripheral surface of the piston, and a plurality of guiding grooves adapted to the guiding blocks are formed on the inner wall of the hydraulic cylinder.

[0013] Preferably, the adjusting mechanism includes an adjusting cylinder, an adjusting rod, an adjusting component and a locking component. The adjusting cylinder is arranged inside the hydraulic cylinder. The adjusting cylinder penetrates through the support plate and is rotatably connected to the support plate. The top end of the adjusting rod is fixedly connected to the bottom end of the adjusting disk, and the bottom end of the adjusting rod extends into the adjusting cylinder and is slidably connected to the adjusting cylinder. The adjusting component is arranged inside the hydraulic cylinder. One end of the adjusting component is connected to the adjusting cylinder. The locking component is arranged on the hydraulic cylinder for locking and limiting the adjusting component.

[0014] Preferably, the adjusting component includes an adjusting worm, an adjusting worm gear and an adjusting handwheel. The adjusting worm gear is fixedly connected to the adjusting cylinder. One end of the adjusting worm is rotatably connected to the inner wall of the hydraulic cylinder, and the other end of the adjusting worm extends outside the hydraulic cylinder. The adjusting worm is adapted to the adjusting worm gear. The adjusting handwheel is arranged outside the hydraulic cylinder and is rotatably connected to the adjusting worm.

[0015] Preferably, the locking component includes a first locking tooth ring, a second locking tooth ring, a connecting block, an adjusting block and a fitting component. The first locking tooth ring is fixedly connected to the hydraulic cylinder. The second locking tooth ring is slidably connected to the adjusting worm. A plurality of connecting blocks are provided and are fixedly connected to the second locking tooth ring. A plurality of adjusting blocks are provided, and the adjusting blocks are fixedly connected to the adjusting handwheel. The connecting block is provided with a connecting hole adapted to the adjusting block. The fitting component is arranged on the adjusting worm, and one end of the fitting component is connected to the second locking tooth ring.

[0016] Preferably, the adjusting worm penetrates through the first locking tooth ring and is rotatably connected to the first locking tooth ring. The first locking tooth ring is adapted to the second locking tooth ring.

[0017] Preferably, the fitting component includes a limiting plate and a fitting spring. The limiting plate is rotatably connected to the adjusting worm. One end of the fitting spring is fixedly connected to the limiting plate, and the other end of the fitting spring is fixedly connected to the first locking tooth ring.

[0018] Preferably, a plurality of sealing rings are arranged between the hydraulic cylinder and the piston rod. The outer rings of the plurality of sealing rings are all connected to the hydraulic cylinder, and the inner rings of the plurality of sealing rings are all slidably connected to the piston rod.

[0019] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0020] Through the cooperation setting among the piston, the adjusting disc and the adjusting mechanism, when it is necessary to adjust the hardness of the damper, the adjusting handwheel is rotated to change the positions of the diversion holes and the adjusting holes, thereby changing the size of the diversion channel. Without changing the damping stroke of the damping spring, the adjustment of the hardness of the damper is realized; through the setting of the locking assembly, the second locking tooth ring is attached to the first locking tooth ring under the action of the attaching spring to lock the position of the adjusting worm, avoiding the influence of the rotation of the adjusting worm on the damper caused by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of an embodiment proposed by the present invention;

[0022] Figure 2 is a sectional view of an embodiment proposed by the present invention;

[0023] Figure 3 is a schematic structural view of a piston in an embodiment proposed by the present invention;

[0024] Figure 4 is a schematic structural view of an adjusting disc in an embodiment proposed by the present invention.

[0025] Figure 5 is a schematic structural view of an adjusting mechanism in an embodiment proposed by the present invention;

[0026] Figure 6 is a schematic structural view of a locking assembly in an embodiment proposed by the present invention.

[0027] Figure 7 is a schematic structural view of an adjusting block in an embodiment proposed by the present invention.

[0028] Reference numerals: 1, hydraulic cylinder; 2, piston rod; 3, piston; 41, adjusting cylinder; 42, adjusting rod; 431, adjusting worm; 432, adjusting worm gear; 433, adjusting handwheel; 441, first locking tooth ring; 442, second locking tooth ring; 443, connecting block; 4441, limiting plate; 4442, attaching spring; 445, adjusting block; 446, connecting hole; 5, diversion hole; 6, adjusting disc; 7, adjusting hole; 8, support plate; 9, return spring; 10, guiding block; 11, sealing ring. DETAILED DESCRIPTION OF THE INVENTION

[0029] Embodiment 1, as Figures 1-7 shown, a hydraulic damping shock absorber structure proposed by the present invention includes a hydraulic cylinder 1, a piston 3, an adjusting disk 6, an adjusting mechanism, and a support plate 8;

[0030] A piston rod 2 is slidably connected to the hydraulic cylinder 1. One end of the piston rod 2 penetrates through the hydraulic cylinder 1 and extends into the interior of the hydraulic cylinder 1. The hydraulic cylinder 1 is filled with hydraulic oil. A plurality of sealing rings 11 are arranged between the hydraulic cylinder 1 and the piston rod 2. The outer rings of the plurality of sealing rings 11 are all connected to the hydraulic cylinder 1, and the inner rings of the plurality of sealing rings 11 are all slidably connected to the piston rod 2;

[0031] The piston 3 is movably arranged in the hydraulic cylinder 1. The piston 3 is fixedly connected to the piston rod 2. The piston 3 is provided with a plurality of flow guiding holes 5 through it. A plurality of guiding blocks 10 are equidistantly arranged on the circumferential surface of the piston 3. A plurality of guiding grooves adapted to the guiding blocks 10 are opened on the inner wall of the hydraulic cylinder 1;

[0032] The adjusting disk 6 is arranged in the hydraulic cylinder 1. The adjusting disk 6 is rotatably connected to the piston 3. The adjusting disk 6 is provided with adjusting holes 7 adapted to the flow guiding holes 5. The flow guiding holes 5 and the adjusting holes 7 form a flow guiding channel;

[0033] The adjusting mechanism is arranged in the hydraulic cylinder 1. One end of the adjusting mechanism is connected to the adjusting disk 6 for rotating the adjusting disk 6;

[0034] The support plate 8 is arranged in the hydraulic cylinder 1. A return spring 9 is fixedly connected to the top of the support plate 8. The top end of the return spring 9 is fixedly connected to the bottom of the adjusting disk 6.

[0035] Embodiment 2, as Figures 2-5 shown, a hydraulic damping shock absorber structure proposed by the present invention. Compared with Embodiment 1, this embodiment further specifically discloses the structure of the adjusting mechanism; the adjusting mechanism includes an adjusting cylinder 41, an adjusting rod 42, an adjusting component, and a locking component; the adjusting cylinder 41 is arranged in the hydraulic cylinder 1. The adjusting cylinder 41 penetrates through the support plate 8 and is rotatably connected to the support plate 8. The top end of the adjusting rod 42 is fixedly connected to the bottom end of the adjusting disk 6. The bottom end of the adjusting rod 42 extends into the adjusting cylinder 41 and is slidably connected to the adjusting cylinder 41. The adjusting component is arranged in the hydraulic cylinder 1. One end of the adjusting component is connected to the adjusting cylinder 41. The locking component is arranged on the hydraulic cylinder 1 for locking and limiting the adjusting component.

[0036] Embodiment 3, as Figures 2-5As shown in the figure, a hydraulic damping shock absorber structure proposed by the present invention specifically discloses the structure of an adjustment assembly in this embodiment compared with Embodiment 2; the adjustment assembly includes an adjustment worm 431, an adjustment worm gear 432, and an adjustment handwheel 433; the adjustment worm gear 432 is fixedly connected to the adjustment cylinder 41, one end of the adjustment worm 431 is rotatably connected to the inner wall of the hydraulic cylinder 1, the other end of the adjustment worm 431 extends to the outside of the hydraulic cylinder 1, the adjustment worm 431 is adapted to the adjustment worm gear 432, and the adjustment handwheel 433 is arranged outside the hydraulic cylinder 1 and is rotatably connected to the adjustment worm 431.

[0037] Embodiment 4, as Figures 5-7 As shown in the figure, a hydraulic damping shock absorber structure proposed by the present invention specifically discloses the structure of a locking assembly in this embodiment compared with Embodiment 3; the locking assembly includes a first locking tooth ring 441, a second locking tooth ring 442, a connecting block 443, an adjusting block 445, and a fitting assembly; the first locking tooth ring 441 is fixedly connected to the hydraulic cylinder 1, the second locking tooth ring 442 is slidably connected to the adjustment worm 431, a plurality of connecting blocks 443 are provided and fixedly connected to the second locking tooth ring 442, a plurality of adjusting blocks 445 are provided, the adjusting blocks 445 are fixedly connected to the adjustment handwheel 433, the connecting block 443 is provided with a connecting hole 446 adapted to the adjusting block 445, the fitting assembly is arranged on the adjustment worm 431, one end of the fitting assembly is connected to the second locking tooth ring 442, the adjustment worm 431 passes through the first locking tooth ring 441 and is rotatably connected to the first locking tooth ring 441, the first locking tooth ring 441 is adapted to the second locking tooth ring 442, and the fitting assembly includes a limiting plate 4441 and a fitting spring 4442; the limiting plate 4441 is rotatably connected to the adjustment worm 431, one end of the fitting spring 4442 is fixedly connected to the limiting plate 4441, and the other end of the fitting spring 4442 is fixedly connected to the first locking tooth ring 441.

[0038] When the electric vehicle encounters an impact on a bumpy road surface, the piston rod 2 pushes the piston 3 to move and compress the return spring 9. At the same time, the hydraulic oil below the piston 3 flows through the diversion hole 5 to the upper part of the piston 3, thereby attenuating the impact load of the bumpy road on the vehicle. During this process, the return spring 9 plays a role in assisting the piston rod 2 and the piston 3 to automatically reset. After the electric vehicle passes over the bumpy road surface, it helps the piston rod 2 and the piston 3 to quickly reset to the initial state. When it is necessary to adjust the hardness of the damper, rotate the adjustment handwheel 433 to drive the adjustment block 445 to insert into the connection hole 446 of the connection block 443, and drive the second locking tooth ring 442 to disengage from the first locking tooth ring 441 through the connection block 443. Continue to rotate the adjustment handwheel 433 to drive the adjustment worm 431 to rotate. The rotation of the adjustment worm 431 drives the adjustment worm gear 432 and the adjustment cylinder 41 to rotate through meshing. The rotation of the adjustment cylinder 41 drives the adjustment disk 6 to rotate through the adjustment rod 42. The rotation of the adjustment disk 6 changes the positions of the diversion hole 5 and the adjustment hole 7, thereby changing the size of the diversion channel and realizing the adjustment of the hardness of the damper. After loosening the adjustment handwheel 433, the second locking tooth ring 442 fits with the first locking tooth ring 441 under the action of the fitting spring 444 to lock the position of the adjustment worm 431.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. A hydraulic damping shock absorber structure, characterized in that, Comprising: A hydraulic cylinder (1), which is slidably connected with a piston rod (2). One end of the piston rod (2) penetrates through the hydraulic cylinder (1) and extends into the interior of the hydraulic cylinder (1). The hydraulic cylinder (1) is filled with hydraulic oil. A piston (3), which is movably arranged in the hydraulic cylinder (1). The piston (3) is fixedly connected with the piston rod (2). The piston (3) is provided with a plurality of diversion holes (5) penetrating therethrough. An adjusting disc (6), which is arranged in the hydraulic cylinder (1). The adjusting disc (6) is rotatably connected with the piston (3). The adjusting disc (6) is provided with an adjusting hole (7) adapted to the diversion hole (5). The diversion hole (5) and the adjusting hole (7) form a diversion channel. An adjusting mechanism, which is arranged in the hydraulic cylinder (1). One end of the adjusting mechanism is connected with the adjusting disc (6) for rotating the adjusting disc (6). A support plate (8), which is arranged in the hydraulic cylinder (1). A return spring (9) is fixedly connected to the top of the support plate (8). The top end of the return spring (9) is fixedly connected to the bottom of the adjusting disc (6).

2. The structure of a hydraulic damping shock absorber according to claim 1, characterized in that, A plurality of guiding blocks (10) are equidistantly arranged on the peripheral surface of the piston (3). A plurality of guiding grooves adapted to the guiding blocks (10) are formed on the inner wall of the hydraulic cylinder (1).

3. A hydraulic damping shock absorber structure according to claim 1, characterized in that, The adjusting mechanism includes an adjusting cylinder (41), an adjusting rod (42), an adjusting component and a locking component. The adjusting cylinder (41) is arranged in the hydraulic cylinder (1). The adjusting cylinder (41) penetrates through the support plate (8) and is rotatably connected with the support plate (8). The top end of the adjusting rod (42) is fixedly connected to the bottom end of the adjusting disc (6). The bottom end of the adjusting rod (42) extends into the adjusting cylinder (41) and is slidably connected with the adjusting cylinder (41). The adjusting component is arranged in the hydraulic cylinder (1). One end of the adjusting component is connected with the adjusting cylinder (41). The locking component is arranged on the hydraulic cylinder (1) for locking and limiting the adjusting component.

4. A hydraulic damping shock absorber structure according to claim 3, characterized in that, The adjusting component includes an adjusting worm (431), an adjusting worm wheel (432) and an adjusting handwheel (433). The adjusting worm wheel (432) is fixedly connected with the adjusting cylinder (41). One end of the adjusting worm (431) is rotatably connected with the inner wall of the hydraulic cylinder (1). The other end of the adjusting worm (431) extends outside the hydraulic cylinder (1). The adjusting worm (431) is adapted to the adjusting worm wheel (432). The adjusting handwheel (433) is arranged outside the hydraulic cylinder (1) and is rotatably connected with the adjusting worm (431).

5. A hydraulic damping shock absorber structure according to claim 4, characterized in that, The locking component includes a first locking tooth ring (441), a second locking tooth ring (442), a connecting block (443), an adjusting block (445) and a fitting component. The first locking tooth ring (441) is fixedly connected with the hydraulic cylinder (1). The second locking tooth ring (442) is slidably connected with the adjusting worm (431). A plurality of connecting blocks (443) are arranged and fixedly connected with the second locking tooth ring (442). A plurality of adjusting blocks (445) are arranged. The adjusting blocks (445) are fixedly connected with the adjusting handwheel (433). The connecting block (443) is provided with a connecting hole (446) adapted to the adjusting block (445). The fitting component is arranged on the adjusting worm (431). One end of the fitting component is connected with the second locking tooth ring (442).

6. The structure of a hydraulic damping shock absorber according to claim 5, characterized in that, The adjusting worm (431) penetrates through the first locking tooth ring (441) and is rotatably connected to the first locking tooth ring (441), and the first locking tooth ring (441) is adapted to the second locking tooth ring (442).

7. A hydraulic damping shock absorber structure according to claim 5, characterized in that, The fitting assembly includes a limiting plate (4441) and a fitting spring (4442); the limiting plate (4441) is rotatably connected to the adjusting worm (431), one end of the fitting spring (4442) is fixedly connected to the limiting plate (4441), and the other end of the fitting spring (4442) is fixedly connected to the first locking tooth ring (441).

8. A hydraulic damping shock absorber structure according to claim 1, characterized in that, A plurality of sealing rings (11) are arranged between the hydraulic cylinder (1) and the piston rod (2). The outer rings of the plurality of sealing rings (11) are all connected to the hydraulic cylinder (1), and the inner rings of the plurality of sealing rings (11) are all slidably connected to the piston rod (2).

Images