Split type piston assembly for shock absorber

Abstract

The utility model discloses a split type piston assembly for a shock absorber, and relates to the technical field of shock absorbers. The split type piston assembly for the shock absorber comprises a piston rod, a threaded groove A is formed in one end of the piston rod, a piston bolt is installed in the threaded groove A in a threaded mode, the outer wall of the piston bolt is sleeved with a front damping piston, the two sides of the front damping piston are each provided with a spacer ring, and the outer sides of the two spacer rings are each sleeved with a recovery valve seat; the outer side of the reset valve seat is sleeved with a reset buffer spring. According to the split type piston assembly for the shock absorber, through the front buffer plug and the buffer block, a closed cavity can be formed in the process that the piston rod rapidly moves outwards, strong damping force is generated to prevent the piston rod from directly colliding with the sealing end cover, vibration and damage of the shock absorber are reduced, and the service life of the shock absorber is greatly prolonged; moreover, the split type piston rod can bear larger torque so as to achieve higher reliability, and the coaxiality of the piston rod can be better calibrated through the split type piston rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field, especially a kind of split piston assembly for shock absorber. BACKGROUND

[0002] Shock absorber is used to suppress the oscillation of spring bounce-back and the impact from road. It is widely used in automobile, to accelerate the attenuation of frame and body vibration, to improve the ride comfort of automobile. When passing uneven road, although shock-absorbing spring can filter road vibration, spring itself still has reciprocating motion, and shock absorber is used to suppress this spring jumping.

[0003] The existing shock absorber in the process of using, piston rod will collide with sealing end cover directly when piston rod moves outward quickly, which can cause shock absorber vibration and damage, affect the service life of shock absorber. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of split piston assembly for shock absorber, to solve the problems and defects proposed in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of split piston assembly for shock absorber, including piston rod, the end of piston rod is provided with threaded slot A, threaded slot A is threadedly installed with piston bolt, the outer wall of piston bolt is equipped with front reduction piston, the two sides of front reduction piston are provided with spacer ring, the outer side of two spacer rings is equipped with reset valve seat, the outer side of reset valve seat is equipped with reset buffer spring, it also includes buffer block that is equipped with the outer side of piston rod, one side of buffer block is provided with valve piece, the outer side of valve piece and the outer side of buffer block are equipped with front buffer plug, a closed chamber is formed in the process of piston rod moving outward quickly, to generate very strong damping force and prevent piston rod from colliding with sealing end cover directly, reduce the vibration and damage of shock absorber, greatly prolong the life of shock absorber, guide sealing assembly that is equipped with the outer side of piston rod, one side of guide sealing assembly is provided with lower connecting seat, oil seal combination is arranged between guide sealing assembly and lower connecting seat.

[0006] Preferably, the outer wall of the piston bolt is equipped with a reset washer, the spacer ring, the reset buffer spring and the reset valve seat are two and symmetrically arranged on the two sides of the front reduction piston.

[0007] Preferably, the spacer ring is equipped with the outer side of the piston bolt, the two reset buffer springs are respectively located between the reset washer and one reset valve seat, and the front buffer plug and the other reset valve seat.

[0008] Preferably, one side of the guide sealing assembly is provided with a threaded groove B, the lower connecting seat is provided with a mounting groove, a clamping screw is arranged in the mounting groove, and the clamping screw is threadedly installed in the threaded groove B.

[0009] Preferably, the other side of the guide sealing assembly is provided with a threaded groove C, the buffer block is provided with a mounting hole, a connecting bolt is arranged in the mounting hole, and the connecting bolt is threadedly installed in the threaded groove C.

[0010] Preferably, the outer wall of the guide sealing assembly is provided with an external thread.

[0011] Preferably, the other end of the piston rod is sleeved with a connecting block, a fixing bolt is threadedly installed on the connecting block, and the fixing bolt is threadedly installed on the outer side of the piston rod.

[0012] Preferably, the outer wall of the guide sealing assembly and the outer wall of the lower connecting seat are both provided with a sealing groove, and a sealing ring is sleeved in the sealing groove.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The split type piston assembly for the shock absorber can bear greater torque to achieve higher reliability, and the split type piston rod can better calibrate the coaxiality of the piston rod. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in connection with the drawings and embodiments:

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a sectional view of the utility model;

[0018] Figure 3 It is Figure 2 right view.

[0019] Reference signs: 1, piston bolt; 2, recovery washer; 3, spacer ring; 4, recovery buffer spring; 5, recovery valve seat; 6, front reduction piston; 7, front buffer plug; 8, valve piece; 9, guide sealing assembly; 10, lower connecting seat; 11, clamping screw; 12, piston rod; 13, buffer block; 14, oil seal combination. DETAILED DESCRIPTION

[0020] The detailed description of the specific embodiments of the present application will be described in this part, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0021] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a split piston assembly for shock absorber, including piston rod 12, the one end of piston rod 12 is provided with thread groove A, piston bolt 1 is threadedly installed in thread groove A, the outer wall of piston bolt 1 is equipped with front reduction piston 6, the both sides of front reduction piston 6 are provided with spacer ring 3, the outside of two spacer rings 3 is equipped with recovery valve seat 5, the outside of recovery valve seat 5 is equipped with recovery buffer spring 4, it further includes the buffer block 13 of being equipped with in the outside of piston rod 12, the side of buffer block 13 is provided with valve piece 8, the outside of valve piece 8 and the outside of buffer block 13 are equipped with front buffer plug 7, a closed chamber is formed in the process of piston rod fast outward movement, to generate very strong damping force and prevent piston rod and sealing end cap direct collision, reduce the vibration and damage of shock absorber, greatly prolong the life of shock absorber, guide sealing assembly 9 of being equipped with in the outside of piston rod 12, the side of guide sealing assembly 9 is provided with lower connecting seat 10, oil seal combination 14 is provided between guide sealing assembly 9 and lower connecting seat 10.

[0022] Further, the outer wall of piston bolt 1 is equipped with recovery washer 2, spacer ring 3, recovery buffer spring 4, recovery valve seat 5 are two and symmetrically arranged on the both sides of front reduction piston 6.

[0023] Further, spacer ring 3 is equipped with the outside of piston bolt 1, two recovery buffer springs 4 are located between recovery washer 2 and one recovery valve seat 5 respectively, between front buffer plug 7 and another recovery valve seat 5.

[0024] Further, the side of guide sealing assembly 9 is provided with thread groove B, lower connecting seat 10 is provided with mounting groove, mounting groove is provided with set screw 11, set screw 11 is threadedly installed in thread groove B.

[0025] Further, the other side of guide sealing assembly 9 is provided with thread groove C, buffer block 13 is provided with mounting hole, mounting hole is provided with connecting bolt, connecting bolt is threadedly installed in thread groove C.

[0026] Further, the outer wall of guide sealing assembly 9 is provided with external thread.

[0027] Further, the other end of piston rod 12 is equipped with connecting block, connecting block is threadedly installed with fixed bolt, fixed bolt is threadedly installed in the outside of piston rod 12.

[0028] Further, the outer wall of the guide sealing assembly 9 and the outer wall of the lower base 10 are both provided with a sealing groove, and a sealing ring is sleeved in the sealing groove.

[0029] Working principle: when the piston rod of the shock absorber moves outward quickly, a closed chamber is formed between the front buffer plug 7 and the buffer block 13, a strong damping force can be generated, and the piston rod and the sealing end cover are directly prevented from colliding.

[0030] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A split piston assembly for a shock absorber, comprising a piston rod (12), one end of which has a threaded groove A, a piston bolt (1) is threaded into the threaded groove A, a front shock absorber piston (6) is fitted onto the outer wall of the piston bolt (1), spacer rings (3) are provided on both sides of the front shock absorber piston (6), a recovery valve seat (5) is fitted onto the outer side of each of the two spacer rings (3), and a recovery buffer spring (4) is fitted onto the outer side of the recovery valve seat (5), characterized in that, Also includes: A buffer block (13) is sleeved on the outside of the piston rod (12). A valve plate (8) is provided on one side of the buffer block (13). A front buffer plug (7) is sleeved on the outside of the valve plate (8) and the outside of the buffer block (13). A guide sealing assembly (9) is sleeved on the outside of the piston rod (12). A lower connecting seat (10) is provided on one side of the guide sealing assembly (9). An oil seal assembly (14) is provided between the guide sealing assembly (9) and the lower connecting seat (10).

2. A split piston assembly for a shock absorber according to claim 1, characterized in that: The piston bolt (1) is fitted with a recovery washer (2) on its outer wall. There are two spacer rings (3), recovery buffer springs (4), and recovery valve seats (5) on both sides of the front reducer piston (6).

3. A split piston assembly for a shock absorber according to claim 2, characterized in that: The spacer ring (3) is sleeved on the outside of the piston bolt (1), and the two recovery buffer springs (4) are located between the recovery washer (2) and a recovery valve seat (5), respectively, and between the front buffer plug (7) and another recovery valve seat (5).

4. A split piston assembly for a shock absorber according to claim 3, characterized in that: The guide sealing assembly (9) has a threaded groove B on one side and an installation groove on the lower connecting seat (10). A set screw (11) is provided in the installation groove and is threaded into the threaded groove B.

5. A split piston assembly for a shock absorber according to claim 4, characterized in that: The other side of the guide sealing assembly (9) has a threaded groove C, and the buffer block (13) has an installation hole. A connecting bolt is installed in the installation hole and the connecting bolt is threaded into the threaded groove C.

6. A split piston assembly for a shock absorber according to claim 5, characterized in that: The outer wall of the guide sealing assembly (9) is provided with external threads.

7. A split piston assembly for a shock absorber according to claim 6, characterized in that: The other end of the piston rod (12) is fitted with a connecting block, and the connecting block is threaded with a fixing bolt, which is threaded on the outside of the piston rod (12).

8. A split piston assembly for a shock absorber according to claim 7, characterized in that: The outer wall of the guide sealing assembly (9) and the outer wall of the lower connecting seat (10) are both provided with sealing grooves, and sealing rings are fitted inside the sealing grooves.

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