Valve seat for automobile shock absorber

Abstract

The utility model discloses a valve seat for an automobile shock absorber, and relates to the technical field of valve seats. The valve seat for the automobile shock absorber comprises a valve seat body used for being connected with a working cylinder barrel of the automobile shock absorber in an inserted mode, and a limiting ring matched with the bottom end of the working cylinder barrel of the automobile shock absorber is arranged on the upper surface of the valve seat body; and the sealing assembly is used for sealing the working cylinder barrel of the automobile shock absorber and the valve seat main body after the working cylinder barrel and the valve seat main body are inserted. By arranging the sealing assembly, when the valve seat is used for installing the working cylinder barrel of the automobile shock absorber, the sealing air bag ring can be expanded into the annular sealing groove, and effective extrusion sealing of the outer ring face of the working cylinder barrel of the automobile shock absorber and the inner ring face of the limiting ring is achieved. And meanwhile, the inner ring surface of the working cylinder barrel of the automobile shock absorber and the outer ring surface of the top end of the valve seat main body can be effectively sealed under the action of the three rubber sealing rings, so that the sealing effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seats, in particular to a valve seat for an automotive shock absorber. Background Art

[0002] The valve seat for an automotive shock absorber is an important component in an automotive shock absorber. When in use, the upper end of the valve seat is inserted into the lower end of the working cylinder in the automotive shock absorber. There is a prior patent for a valve seat for an automotive shock absorber, with the patent publication number CN219452749U, which includes a valve seat body and a sealing ring. The upper end of the valve seat body is provided with a first annular step, the side wall of the upper part of the valve seat body is provided with a second annular step, the sealing ring is sleeved outside the valve seat body, the lower end surface of the horizontal edge of the sealing ring abuts against the first annular step, the inner end of the horizontal edge of the sealing ring abuts against the side wall of the first annular step, and the lower end of the vertical edge of the sealing ring abuts against the second annular step; a first annular boss is arranged on the lower end surface of the horizontal edge, a first annular groove is arranged at the bottom of the first annular step, a second annular boss is arranged at the lower end of the vertical edge, a second annular groove is arranged at the bottom of the second annular step, a third annular boss is arranged on the inner wall at the lower end of the vertical edge, and a third annular groove is arranged on the side wall of the second annular step; the utility model can effectively prevent the sealing ring from detaching from the valve seat.

[0003] Regarding the above related technology, the inventor believes there are the following defects: During the actual use of this valve seat for an automotive shock absorber, although the sealing ring can be prevented from detaching from the valve seat under the action of the two annular grooves, during the actual sealing process of the sealing ring, its connection method with the bottom end of the shock absorber working cylinder is only that the working cylinder is sleeved outside the sealing ring, and the outer surface of the sealing ring is smooth. On the one hand, it is easy for the position between the sealing ring and the working cylinder to shift, and on the other hand, the sealing method at the gap between the outer surface of the sealing ring and the working cylinder is single, resulting in a poor sealing effect.

[0004] Therefore, we propose a valve seat for an automotive shock absorber to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a valve seat for an automotive shock absorber, which solves the problem of poor sealing performance between the valve seat and the working cylinder in the prior art.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: A valve seat for an automotive shock absorber, comprising:

[0007] A valve seat body, which is used for inserting into the working cylinder of the automotive shock absorber, and a limit ring adapted to the bottom end of the working cylinder of the automotive shock absorber is provided on the upper surface of the valve seat body;

[0008] A sealing assembly is used to seal the working cylinder of an automotive shock absorber and the valve seat body after insertion. The sealing assembly includes three rubber sealing rings equidistantly arranged between the inner ring surface of the working cylinder of the automotive shock absorber and the outer ring surface of the valve seat body. The sealing assembly further includes a first annular installation groove opened on the upper surface of the valve seat body, and an inflatable airbag ring fixedly arranged on the inner bottom wall of the first annular installation groove. And the inner ring surface of the limiting ring is embedded with an installation ring. The inner ring surface of the installation ring is provided with a second annular installation groove, and a sealing airbag ring is fixedly arranged on the inner wall of the second annular installation groove. An annular sealing groove adapted to the sealing airbag ring is opened on the outer surface of the working cylinder of the automotive shock absorber. The inner wall of the inflatable airbag ring is embedded with an air charging and discharging pipe extending into the interior of the sealing airbag ring.

[0009] Preferably, the outer ring surface of the valve seat body is equidistantly provided with a first annular groove adapted to the three rubber sealing rings, and the inner ring surface of the working cylinder of the automotive shock absorber is provided with a second annular groove adapted to the three rubber sealing rings.

[0010] Preferably, a first annular expansion water stop belt is fixedly arranged between every two adjacent rubber sealing rings.

[0011] Preferably, a plurality of reset springs for facilitating the reset of the inflatable airbag ring after compression are fixedly arranged on the inner bottom wall and the inner top wall of the inflatable airbag ring in a circumferential array. A pressure relief pipe extending to the outer surface of the installation ring is embedded in the inner wall of the sealing airbag ring, and a pressure relief valve is arranged at the end of the pressure relief pipe.

[0012] Preferably, a pressing ring for pressing the inflatable airbag ring is slidably arranged between the inner ring surface of the limiting ring and the outer surface of the valve seat body.

[0013] Preferably, a plurality of cylindrical grooves are equidistantly opened on the inner ring surface and the outer ring surface of the limiting ring in a circumferential array, and a limiting ball is slidably arranged on the inner wall of the cylindrical groove. Hemispherical limiting grooves adapted to the limiting balls are opened on the inner ring surface and the outer ring surface of the pressing ring. A spring piece is fixedly arranged on the inner wall of the cylindrical groove, and the limiting ball is fixedly arranged on the surface of the spring piece.

[0014] Preferably, an annular groove is opened on the outer ring surface of the working cylinder of the automotive shock absorber, and a second annular expansion water stop belt is fixedly arranged on the inner wall of the annular groove.

[0015] Beneficial effects

[0016] The present utility model provides a valve seat for an automotive shock absorber. Compared with the prior art, the following beneficial effects are achieved:

[0017] The valve seat for the vehicle shock absorber, by setting the sealing component, enables the sealing airbag ring to expand into the annular sealing groove when the valve seat is installed on the working cylinder of the vehicle shock absorber, achieving effective extrusion sealing between the outer ring surface of the working cylinder of the vehicle shock absorber and the inner ring surface of the limiting ring. At the same time, it can effectively seal between the inner ring surface of the working cylinder of the vehicle shock absorber and the outer ring surface of the top of the valve seat body under the action of three rubber sealing rings. Furthermore, after the valve seat is installed on the working cylinder of the vehicle shock absorber, multiple seals can be achieved simultaneously, effectively improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a top-view structural schematic diagram of the present utility model;

[0020] Figure 3 is a cross-sectional structural schematic diagram of the present utility model;

[0021] Figure 4 is the present utility model Figure 3 is an enlarged structural schematic diagram of part A in the present utility model.

[0022] In the figure:

[0023] 100, valve seat body;

[0024] 200, working cylinder of the vehicle shock absorber;

[0025] 300, limiting ring;

[0026] 400, sealing component; 401, rubber sealing ring; 402, inflatable airbag ring; 403, mounting ring; 404, sealing airbag ring; 405, annular sealing groove; 406, air charging and discharging pipe; 407, first annular groove; 408, second annular groove; 409, first annular expansion water stop belt; 4010, return spring; 4011, pressure relief pipe; 4012, extrusion ring; 4013, cylindrical groove; 4014, limiting ball; 4015, spring piece; 4016, second annular expansion water stop belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1-4, the present utility model provides a technical solution: a valve seat for an automotive shock absorber, including:

[0029] A valve seat body 100, which is used for inserting into the working cylinder 200 of the automotive shock absorber. A limiting ring 300 adapted to the bottom end of the working cylinder 200 of the automotive shock absorber is provided on the upper surface of the valve seat body 100;

[0030] A sealing assembly 400, which is used for sealing after the working cylinder 200 of the automotive shock absorber is inserted into the valve seat body 100. The sealing assembly 400 includes three rubber sealing rings 401 arranged at equal intervals between the inner ring surface of the working cylinder 200 of the automotive shock absorber and the outer ring surface of the valve seat body 100. The sealing assembly 400 further includes a first annular installation groove opened on the upper surface of the valve seat body 100, and an inflatable airbag ring 402 fixed on the inner bottom wall of the first annular installation groove. A pressing ring 4012 for pressing the inflatable airbag ring 402 is slidably arranged between the inner ring surface of the limiting ring 300 and the outer surface of the valve seat body 100, which is convenient for stably compressing the inflatable airbag ring 402.

[0031] A plurality of cylindrical grooves 4013 are arranged in a circumferential array on both the inner ring surface of the limiting ring 300 and the outer ring surface of the valve seat body 100. And a limiting ball 4014 is slidably arranged on the inner wall of the cylindrical groove 4013. Hemispherical limiting grooves adapted to the limiting balls 4014 are opened on both the inner ring surface and the outer ring surface of the pressing ring 4012. A spring piece 4015 is fixed on the inner wall of the cylindrical groove 4013, and the limiting ball 4014 is fixed on the surface of the spring piece 4015, which is convenient for the limiting ball 4014 to enter the semi-circular limiting groove to realize the positioning of the pressing ring 4012.

[0032] And an installation ring 403 is embedded in the inner ring surface of the limiting ring 300. A second annular installation groove is opened on the inner ring surface of the installation ring 403, and a sealing airbag ring 404 is fixed on the inner wall of the second annular installation groove. An annular sealing groove 405 adapted to the sealing airbag ring 404 is opened on the outer surface of the working cylinder 200 of the automotive shock absorber. A plurality of reset springs 4010 for facilitating the reset of the inflatable airbag ring 402 after compression are fixed on the inner bottom wall and the inner top wall of the inflatable airbag ring 402 in a circumferential array. A pressure relief pipe 4011 extending to the outer surface of the installation ring 403 is embedded in the inner wall of the sealing airbag ring 404, and a pressure relief valve is arranged at the end of the pressure relief pipe 4011, which is convenient for deflating the sealing airbag ring 404 when disassembling the working cylinder 200 of the automotive shock absorber.

[0033] An air charging and discharging pipe 406 extending to the inside of the sealing airbag ring 404 is embedded in the inner wall of the inflatable airbag ring 402.

[0034] The outer ring surface of the valve seat body 100 is equidistantly provided with a first annular groove 407 adapted to three rubber sealing rings 401, and the inner ring surface of the working cylinder 200 of the vehicle shock absorber is provided with a second annular groove 408 adapted to three rubber sealing rings 401. The rubber sealing rings 401 are fixed on the inner wall of the first annular groove 407 by glue.

[0035] A first annular expansion water stop belt 409 is fixedly arranged between every two adjacent rubber sealing rings 401, which can make the first annular expansion water stop belt 409 expand when leakage occurs.

[0036] The outer ring surface of the working cylinder 200 of the vehicle shock absorber is provided with an annular groove, and a second annular expansion water stop belt 4016 is fixedly arranged on the inner wall of the annular groove, which can make the second annular expansion water stop belt 4016 expand when leakage occurs.

[0037] Among them, for the valve seat used in the vehicle shock absorber, by setting the sealing assembly 400, when the valve seat is installed on the working cylinder 200 of the vehicle shock absorber, the sealed airbag ring 404 can be expanded into the annular sealing groove 405 to effectively squeeze and seal the outer ring surface of the working cylinder 200 of the vehicle shock absorber and the inner ring surface of the limit ring 300. At the same time, under the action of the three rubber sealing rings 401, effective sealing can be achieved between the inner ring surface of the working cylinder 200 of the vehicle shock absorber and the outer ring surface of the top end of the valve seat body 100. Furthermore, after the valve seat is installed on the working cylinder 200 of the vehicle shock absorber, multiple seals can be achieved simultaneously, effectively improving the sealing effect.

[0038] During operation, when installing the working cylinder 200 of the vehicle shock absorber, the valve seat can insert the working cylinder 200 of the vehicle shock absorber between the top of the valve seat body 100 and the limit ring 300, driving the extrusion ring 4012 to move downward. The downward movement of the extrusion ring 4012 squeezes the inflatable airbag ring 402, causing the air in the inflatable airbag ring 402 to enter the interior of the sealed airbag ring 404 through the air charging and discharging pipe 406, making it expand. When the annular sealing groove 405 on the surface of the working cylinder 200 of the vehicle shock absorber corresponds to the sealed airbag ring 404, at this time, the sealed airbag ring 404 can expand into the annular sealing groove 405, achieving effective extrusion sealing between the outer ring surface of the working cylinder 200 of the vehicle shock absorber and the inner ring surface of the limit ring 300. At the same time, effective sealing can be achieved between the inner ring surface of the working cylinder 200 of the vehicle shock absorber and the outer ring surface of the top of the valve seat body 100 under the action of the three rubber sealing rings 401. Moreover, the setting of the first annular expansion water stop belt 409 between the three rubber sealing rings 401 and the second annular expansion water stop belt 4016 on the outer ring surface of the working cylinder 200 of the vehicle shock absorber can make the first annular expansion water stop belt 409 or the second annular expansion water stop belt 4016 expand when there is leakage on the inner ring surface or the outer ring surface of the working cylinder 200 of the vehicle shock absorber, thereby further achieving the sealing effect. Furthermore, after being installed with the working cylinder 200 of the vehicle shock absorber, the valve seat can achieve multiple seals simultaneously, effectively improving the sealing effect.

[0039] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A valve seat for an automotive shock absorber, characterized in that, Comprising: A valve seat body (100) for inserting into the working cylinder (200) of an automotive shock absorber. The upper surface of the valve seat body (100) is provided with a limiting ring (300) adapted to the bottom end of the working cylinder (200) of the automotive shock absorber. A sealing assembly (400) for sealing after the working cylinder (200) of the automotive shock absorber is inserted into the valve seat body (100). The sealing assembly (400) includes three rubber sealing rings (401) equidistantly arranged between the inner circumferential surface of the working cylinder (200) of the automotive shock absorber and the outer circumferential surface of the valve seat body (100). The sealing assembly (400) further includes a first annular mounting groove opened on the upper surface of the valve seat body (100), and an inflatable airbag ring (402) fixed on the inner bottom wall of the first annular mounting groove. And an installation ring (403) is embedded in the inner circumferential surface of the limiting ring (300). A second annular mounting groove is opened on the inner circumferential surface of the installation ring (403), and a sealing airbag ring (404) is fixed on the inner wall of the second annular mounting groove. An annular sealing groove (405) adapted to the sealing airbag ring (404) is opened on the outer surface of the working cylinder (200) of the automotive shock absorber. An air charging and discharging pipe (406) extending into the interior of the sealing airbag ring (404) is embedded in the inner circumferential surface of the inflatable airbag ring (402).

2. The valve seat for an automotive shock absorber according to claim 1, characterized in that: First annular grooves (407) adapted to the three rubber sealing rings (401) are equidistantly opened on the outer circumferential surface of the valve seat body (100), and second annular grooves (408) adapted to the three rubber sealing rings (401) are opened on the inner circumferential surface of the working cylinder (200) of the automotive shock absorber.

3. The valve seat for an automotive shock absorber according to claim 1, characterized in that: A first annular expansion water stop belt (409) is fixed between every two adjacent rubber sealing rings (401).

4. The valve seat for an automotive shock absorber according to claim 1, characterized in that: A plurality of reset springs (4010) for facilitating the reset of the inflatable airbag ring (402) after compression are fixed on the inner bottom wall and the inner top wall of the inflatable airbag ring (402) in a circumferential array. A pressure relief pipe (4011) extending to the outer surface of the installation ring (403) is embedded in the inner circumferential surface of the sealing airbag ring (404), and a pressure relief valve is provided at the end of the pressure relief pipe (4011).

5. The valve seat for an automotive shock absorber according to claim 1, wherein: An extrusion ring (4012) for extruding the inflatable airbag ring (402) is slidably arranged between the inner circumferential surface of the limiting ring (300) and the outer surface of the valve seat body (100).

6. The valve seat for an automotive shock absorber according to claim 5, characterized in that: A plurality of cylindrical grooves (4013) are opened in a circumferential array on both the inner circumferential surface of the limiting ring (300) and the outer circumferential surface of the valve seat body (100), and a limiting ball (4014) is slidably arranged on the inner wall of the cylindrical groove (4013). Hemispherical limiting grooves adapted to the limiting balls (4014) are opened on both the inner circumferential surface and the outer circumferential surface of the extrusion ring (4012). A spring piece (4015) is fixed on the inner wall of the cylindrical groove (4013), and the limiting ball (4014) is fixed on the surface of the spring piece (4015).

7. A valve seat for an automotive shock absorber according to any one of claims 1-6, characterized in that: An annular groove is opened on the outer circumferential surface of the working cylinder (200) of the automotive shock absorber, and a second annular expansion water stop belt (4016) is fixed on the inner wall of the annular groove.

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