Support pad for a shock absorber piston plate valve

Abstract

The application discloses a kind of support pads for shock absorber piston plate valve, it is related to shock absorber piston plate valve technical field, including shock absorber shell, the inside of shock absorber shell is equipped with piston plate, support pad, gasket, the inner wall of the piston plate is equipped with No. 1 cavity, No. 2 cavity, buffer unit, U-shaped groove;Positioning unit.The application is provided with buffer unit, when the valve piece on support pad is opened, the valve piece will be deformed and contact with support pad, because oil will have certain viscosity, resulting in the valve piece after opening is instantaneously separated from support pad, produces adsorption effect, at this time, oil will be under the action of U-shaped groove, reduce the damping between support pad and valve piece, reduce the abrupt feeling of the whole vehicle driving experience, solve the mirror adsorption effect of oil flow, so that the valve piece is more smooth after deformation and return, eliminate the abrupt feeling of valve system movement return, improve comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorber piston plate valve, and particularly relates to a support pad for shock absorber piston plate valve. BACKGROUND

[0002] The shock absorber is an apparatus for accelerating the damping of the vibration of a vehicle frame and a vehicle body to improve the riding comfort of the vehicle. When the vehicle frame and the vehicle bridge reciprocate relative to each other, the piston plate in the shock absorber also reciprocates in the cylinder. Then, the oil in the shock absorber housing repeatedly flows from one cavity to another cavity through some narrow apertures. At this time, the friction between the aperture wall and the oil and the internal friction of the liquid molecules form a damping force for the vibration, so that the vibration energy of the vehicle body and the vehicle frame is converted into heat energy, which is absorbed by the oil and the shock absorber housing and then dissipated into the atmosphere. The damping force of the shock absorber increases or decreases with the increase or decrease of the relative speed of the vehicle frame and the vehicle bridge (or the vehicle wheel) and is related to the viscosity of the oil.

[0003] The existing support pad for the shock absorber piston plate valve has a pure plane. At the instant of valve opening and return, the oil flow generates a mirror surface adsorption effect, the valve plate is adsorbed to the support pad, and the damping performance has an instantaneous mutation, which brings a sudden feeling to the driving and riding experience of the whole vehicle. Therefore, the present application provides a support pad for shock absorber piston plate valve. SUMMARY

[0004] The present application aims at solving the problems in the background art and providing a support pad for shock absorber piston plate valve.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a support pad for shock absorber piston plate valve, comprising a shock absorber housing, a piston plate installed in the inside of the shock absorber housing, a support pad and a gasket sleeved on the outer wall of the piston plate, the support pad being located above the gasket, a first cavity and a second cavity being formed in the inner wall of the piston plate, the first cavity and the second cavity being symmetrically distributed with the piston plate as the center, a buffer unit arranged on the outer wall of the support pad, the buffer unit comprising a U-shaped groove arranged on the outer wall of the support pad.

[0006] A positioning unit arranged on the inner side of the support pad, the positioning unit comprising a center ring and a butt joint rod, the center ring being fixedly installed on the inner side of the support pad, and the butt joint rod being fixedly connected to the bottom end of the center ring.

[0007] As a further scheme of the present application, the positioning unit further comprises a first limiting groove formed in the outer wall of the center ring, the outer wall of the center ring is provided with a moving block penetrating through the center ring to the inside of the first limiting groove, the two sides of the moving block are fixedly connected with protruding portions, and the outer wall of the butt joint rod is provided with a second limiting groove.

[0008] As a further further scheme of the present application: the orientation of the docking rod is the same as that of the moving block, and the outer wall of the moving block is in line with the outer wall of the docking rod.

[0009] As a further further scheme of the present application: one end of the outer wall of the moving block is in a beveled state, and the inner wall of the first limiting groove is provided with a sliding groove matched with the moving track of the protruding portion.

[0010] As a further further scheme of the present application: the docking rod and the first limiting groove are on the same vertical plane, and the outer wall of the docking rod is in line with the inner wall of the first limiting groove.

[0011] As a further further scheme of the present application: the number of the first limiting groove and the docking rod is multiple, and the multiple first limiting grooves and docking rods are uniformly distributed on the center ring.

[0012] As a further further scheme of the present application: the number of the U-shaped grooves is multiple, and the multiple U-shaped grooves are uniformly distributed at the top end and the bottom end of the support pad, and the inner side of the center ring is in line with the position where the support pad is in contact.

[0013] As a further further scheme of the present application: the number of the support pads is multiple, and the multiple support pads are in a stacked state and are distributed up and down, and the bottom end of the support pad is coincided with the upper end opening of the second cavity.

[0014] As a further further scheme of the present application: the top end of the gasket is coincided with the lower end opening of the first cavity, a valve plate is installed at the position where the piston plate is in contact with the bottom end of the support pad, bolts are installed at the top end and the bottom end of the outer wall of the piston plate, the bottom ends of the two bolts are respectively in contact with the top end and the bottom end of the support pad and the gasket, the outer wall of the support pad is in a trumpet shape, and the larger opening of the support pad is in contact with the top end bolt.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] By setting the buffer unit, when the valve plate on the support pad 3 is opened, the valve plate will be deformed and in contact with the support pad 3. Since the oil has a certain viscosity, the valve plate will produce an adsorption effect when it is separated from the support pad after returning. At this time, the oil will reduce the damping between the support pad 3 and the valve plate under the action of the U-shaped groove 7011, reduce the sudden feeling of the vehicle driving and riding, solve the mirror adsorption effect of oil flow, make the valve plate more smooth when it is deformed and returned, eliminate the sudden feeling of valve system movement, and improve the comfort. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 The structure of the present application is shown in the figure;

[0018] Fig. 2 It is a schematic diagram of the internal structure of the piston plate of the application;

[0019] Fig. 3 It is a schematic diagram of the support pad structure of the application;

[0020] Fig. 4 It is a schematic diagram of the structure of the positioning unit of the application;

[0021] Fig. 5 It is a partial enlarged view at A of the application;

[0022] Fig. 6 It is a damping performance graph before improvement of the application;

[0023] Fig. 7 It is a damping performance graph of the application.

[0024] In the figure: 1, shock absorber shell; 2, piston plate; 3, support pad; 4, gasket; 5, No. 1 cavity; 6, No. 2 cavity; 701, buffer unit; 7011, U-shaped groove; 702, positioning unit; 7021, center ring; 7022, No. 1 limiting groove; 7023, moving block; 7024, butt joint rod; 7025, No. 2 limiting groove; 7026, protruding part. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0026] Please refer to Figs. 1-7 In the embodiments of the application, a support pad for a shock absorber piston plate valve comprises a shock absorber shell 1, a piston plate 2 installed inside the shock absorber shell 1, a support pad 3 and a gasket 4 sleeved on the outer wall of the piston plate 2, the support pad 3 being located above the gasket 4, a No. 1 cavity 5 and a No. 2 cavity 6 being formed in the inner wall of the piston plate 2, the No. 1 cavity 5 and the No. 2 cavity 6 being symmetrically distributed with the piston plate 2 as the center, a buffer unit 701 being arranged on the outer wall of the support pad 3, the buffer unit 701 comprising a U-shaped groove 7011 arranged on the outer wall of the support pad 3;

[0027] A positioning unit 702 being arranged on the inner side of the support pad 3, the positioning unit 702 comprising a center ring 7021 and a butt joint rod 7024, the center ring 7021 being fixedly installed on the inner side of the support pad 3, and the butt joint rod 7024 being fixedly connected to the bottom end of the center ring 7021.

[0028] In the embodiment: through this structure, the support pad 3 can be connected under the action of the positioning unit 702, and then the support pad 3 is sleeved on the outer wall of the piston plate 2. The piston plate 2 is sealed and pressed by bolts. When the valve piece on the support pad 3 is opened, the valve piece deforms and contacts the support pad 3. Because the oil has a certain viscosity, the valve piece generates adsorption effect in the moment of returning from the opened valve and leaving the support pad. At this time, the oil will reduce the damping between the support pad 3 and the valve piece under the action of the U-shaped groove 7011, reduce the abrupt feeling of the vehicle driving and riding, solve the mirror adsorption effect of oil flow, make the valve piece more smooth in the moment of returning from deformation, eliminate the abrupt feeling of valve system movement, and improve the comfort.

[0029] Please refer to Figs. 2-5 The positioning unit 702 further comprises a first limiting groove 7022 formed in the outer wall of a center ring 7021. The outer wall of the center ring 7021 is provided with a moving block 7023 penetrating through the center ring 7021 to the inside of the first limiting groove 7022. The two sides of the moving block 7023 are fixedly connected with a protruding part 7026. The outer wall of the butt joint rod 7024 is provided with a second limiting groove 7025.

[0030] In the embodiment: by blocking and stacking the support pads 3 together, the top end of the center ring 7021 installed in the inner side of the support pad 3 contacts the bottom end of another center ring 7021. The first limiting groove 7022 formed in the top end of one center ring 7021 is butt jointed with the butt joint rod 7024 connected to the bottom end of another center ring 7021. When the plurality of support pads 3 are stacked together, the support pad 3 is sleeved on the outer wall of the piston plate 2. At this time, the piston plate 2 is sleeved on the inner side of the center ring 7021. The moving block 7023 installed in the inner side of the center ring 7021 is forced to move to the inside of the first limiting groove 7022. Because the butt joint rod 7024 is located in the inside of the first limiting groove 7022 at this time, the moving block 7023 moves to the second limiting groove 7025 formed in the outer wall of the butt joint rod 7024. Until the one end of the moving block 7023 is completely overlapped with the inner side of the center ring 7021, and the other end of the moving block 7023 also contacts the inside of the second limiting groove 7025, the connection of each support pad 3 is automatically completed, and the stability between each support pad 3 is further improved.

[0031] Please refer to Figs. 2-5The direction of the butt joint rod 7024 is the same as that of the moving block 7023, the outer wall of the moving block 7023 is matched with the outer wall of the butt joint rod 7024, the outer wall of one end of the moving block 7023 is in a beveled state, the inner wall of the first limiting groove 7022 is provided with a sliding groove matched with the moving track of the protruding part 7026, the butt joint rod 7024 and the first limiting groove 7022 are on the same vertical plane, the outer wall of the butt joint rod 7024 is matched with the inner wall of the first limiting groove 7022, the number of the first limiting groove 7022 and the butt joint rod 7024 is multiple, the multiple first limiting grooves 7022 and butt joint rods 7024 are evenly distributed on the center ring 7021, the number of the U-shaped groove 7011 is multiple, the multiple U-shaped grooves 7011 are evenly distributed on the top end and the bottom end of the support pad 3, the inner side of the center ring 7021 is matched with the position where the support pad 3 is in contact, the number of the support pad 3 is multiple, the multiple support pads 3 are in a stacked state and are distributed up and down, the bottom end of the support pad 3 is coincided with the upper end opening of the second cavity 6, the top end of the gasket 4 is coincided with the lower end opening of the first cavity 5, the valve plate is installed at the position where the piston plate 2 is in contact with the bottom end of the support pad 3, the top end and the bottom end of the piston plate 2 are both provided with a bolt, the bottom ends of the two bolts are respectively in contact with the top end and the bottom end of the support pad 3 and the gasket 4, the outer wall of the support pad 3 is in a trumpet shape, and the larger opening of the support pad 3 is in contact with the top end bolt.

[0032] In the embodiment, the support pad 3 is blocked and stacked together, the top end of the center ring 7021 mounted inside the support pad 3 is in contact with the bottom end of another center ring 7021, the first limiting groove 7022 opened at the top end of one center ring 7021 is in butt joint with the butt joint rod 7024 connected at the bottom end of another center ring 7021, and the pre-connection is completed. After the plurality of support pads 3 are stacked together one by one, the support pad 3 is sleeved on the outer wall of the piston plate 2, at this time the piston plate 2 is sleeved on the inside of the center ring 7021, and then the moving block 7023 mounted inside the center ring 7021 is forced to move to the inside of the first limiting groove 7022. Since the butt joint rod 7024 is located inside the first limiting groove 7022 at this time, the moving block 7023 moves to the second limiting groove 7025 opened on the outer wall of the butt joint rod 7024, until the one end of the moving block 7023 is completely coincided with the inside of the center ring 7021, and the other end of the moving block 7023 is also in contact with the inside of the second limiting groove 7025, thereby automatically connecting each support pad 3, further improving the stability between each support pad 3. When the valve plate on the support pad 3 is opened, the oil enters the second cavity 6 or the first cavity 5 during the movement of the piston plate 2 along the inside of the shock absorber shell 1, giving the valve plate a pressing force, so that the valve plate deforms and contacts the support pad 3. Since the oil has a certain viscosity, the valve plate after opening will produce adsorption effect in the instant of returning away from the support pad, at this time the oil will reduce the damping between the support pad 3 and the valve plate under the action of the U-shaped groove 7011, reduce the abrupt feeling of the driver and passenger, solve the mirror adsorption effect of oil flow, make the valve plate more smooth in the instant of returning after deformation, eliminate the abrupt feeling of valve system movement, improve the comfort, and the plurality of support pads 3 can be automatically connected during sleeving with the piston plate 2 under the action of the first limiting groove 7022, the butt joint rod 7024 and the moving block 7023.

[0033] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A support pad for a shock absorber piston plate valve, comprising a shock absorber shell (1), the inside of the shock absorber shell (1) is provided with a piston plate (2), the outer wall of the piston plate (2) is sleeved with a support pad (3) and a gasket (4), the support pad (3) is located above the gasket (4), and the inner wall of the piston plate (2) is provided with a first cavity (5) and a second cavity (6), the first cavity (5) and the second cavity (6) are symmetrically distributed with the piston plate (2) as the center, characterized in that, A buffering unit (701) is arranged on the outer wall of the support pad (3), and the buffering unit (701) comprises a U-shaped groove (7011) arranged on the outer wall of the support pad (3); A positioning unit (702) is arranged on the inner side of the support pad (3), and the positioning unit (702) comprises a center ring (7021) and a butt joint rod (7024), wherein the center ring (7021) is fixedly installed on the inner side of the support pad (3), and the butt joint rod (7024) is fixedly connected to the bottom end of the center ring (7021); The positioning unit (702) further comprises a first limiting groove (7022) formed in the outer wall of the center ring (7021), the outer wall of the center ring (7021) is provided with a moving block (7023) penetrating through the center ring (7021) to the inside of the first limiting groove (7022), the two sides of the moving block (7023) are fixedly connected with a protruding portion (7026), and the outer wall of the butt joint rod (7024) is provided with a second limiting groove (7025).

2. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that The butt joint rod (7024) is arranged in the same direction as the moving block (7023), and the outer wall of the moving block (7023) is matched with the outer wall of the butt joint rod (7024).

3. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that One end of the outer wall of the moving block (7023) is in a beveled state, and the inner wall of the first limiting groove (7022) is provided with a sliding groove matched with the moving track of the protruding portion (7026).

4. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that The butt joint rod (7024) and the first limiting groove (7022) are arranged on the same vertical plane, and the outer wall of the butt joint rod (7024) is matched with the inner wall of the first limiting groove (7022).

5. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that The number of the first limiting groove (7022) and the butt joint rod (7024) is multiple, and the first limiting groove (7022) and the butt joint rod (7024) are evenly distributed on the center ring (7021).

6. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that The number of the U-shaped groove (7011) is multiple, and the U-shaped groove (7011) is evenly distributed on the top end and the bottom end of the support pad (3), and the inner side of the center ring (7021) is matched with the position where the support pad (3) is in contact with the support pad (3).

7. A support pad for a piston plate valve of a shock absorber as defined in claim 1, characterized in that The number of the support pad (3) is multiple, and the support pad (3) is arranged in a stacked state, and the bottom end of the support pad (3) is coincided with the upper end opening of the second cavity (6).

8. A support pad for a piston plate valve of a shock absorber according to claim 1, characterized in that The top end of the gasket (4) is coincided with the lower end opening of the first cavity (5), the valve plate is arranged at the position where the piston plate (2) is in contact with the bottom end of the support pad (3), the bolts are arranged on the outer wall of the top end and the bottom end of the piston plate (2), the bottom ends of the two bolts are in contact with the top end and the bottom end of the support pad (3) and the gasket (4), respectively, the outer wall of the support pad (3) is in a trumpet shape, and the larger opening of the support pad (3) is in contact with the top end bolt.

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