Novel one-way valve piston assembly with high sealing performance

Abstract

The utility model relates to a novel one-way valve piston assembly with high sealing performance, which belongs to the technical field of shock absorbers and comprises a piston assembly body which is integrally arranged in a circular shape. A front end inner side hole and a front end outer side hole are formed in the front end of the piston assembly body; a rear end inner side hole and a rear end outer side hole are formed in the rear end of the piston assembly body; a mounting hole is formed in the center of the piston assembly body in a penetrating mode. A one-way valve device is further arranged in the piston assembly body, and an oil channel is arranged on the one-way valve device in a matched mode. A sealing mechanism is further installed on the periphery of the piston assembly body in a matched mode. The utility model has the advantages that the use is safe and reliable, the service life is effectively prolonged, the cost is reduced, the sealing performance is better, and the stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a novel one-way valve piston assembly with high sealing performance. Background Art

[0002] In many fluid systems, it is necessary to control the one-way flow of the fluid and prevent the reverse flow, thereby protecting the system from damage caused by pressure reversal and maintaining a normal working cycle to achieve specific functions or ensure the normal operation of the system. With the continuous advancement of technology, the one-way valve piston assembly has been continuously improved in structure and performance, and is developing towards more efficient, more reliable, and more miniaturized to meet the increasingly complex and diverse application requirements. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a novel one-way valve piston assembly with high sealing performance. The utility model is safe and reliable to use, effectively prolongs the service life, reduces the cost, and has good sealing performance and improved stability.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a new type of one-way valve piston assembly with high sealing performance, including a piston assembly body, which is generally circular in shape; the front end of the piston assembly body is provided with a front end inner hole and a front end outer hole; the rear end of the piston assembly body is provided with a rear end inner hole and a rear end outer hole; a mounting hole is provided through the center position of the piston assembly body; a one-way valve device is also provided in the piston assembly body, and an oil channel is provided on the outside of the one-way valve device; and a sealing mechanism is also installed on the periphery of the piston assembly body.

[0005] When the utility model is working, the piston rod penetrates into the mounting hole, driving the piston assembly to reciprocate up and down; the conical spring is installed between the limit device and the valve plate, and the spring is in a compressed state to provide a pre-tightening force for the valve plate; the valve plate embedded in the piston assembly limits the axial movement of the valve plate under the restriction of the limit device, and the limit device is "L" shaped as a whole; a notch and a valve plate hole are provided on the valve plate, and an oil channel can be formed between the notch and the limit device. The oil enters the oil channel through the valve plate hole for discharge, realizing a unidirectional flow of the oil and extending the service life of the piston assembly; a groove is provided on the outer periphery of the piston assembly body, and the groove is arranged in a step shape, and the steps are transitioned by chamfering, and a plurality of grooves are provided; a sealing rubber sheet is also provided on the groove to improve the sealing performance of the piston assembly; the front end of the piston assembly body is evenly provided with a front end inner hole and a front end outer hole, and the rear end is evenly provided with a rear end inner hole and a rear end outer hole, thereby ensuring the stability of the piston assembly.

[0006] The beneficial effects of the utility model are: a novel one-way valve piston assembly with high sealing performance, the utility model is safe and reliable to use, effectively prolongs the service life, reduces the cost, and has good sealing performance and improved stability.

[0007] As a further improvement of the utility model, in order to control the unidirectional flow of oil and extend the service life of the piston; the one-way valve device includes a valve plate and a limit device embedded in the piston assembly; a conical spring is arranged between the valve plate and the limit device; a notch is arranged on the valve plate; and a valve plate hole is also arranged on the valve plate.

[0008] As a further improvement of the utility model, in order to ensure the sealing performance of the piston, the sealing mechanism includes a groove arranged on the outer periphery of the piston assembly, and a sealing rubber sheet is also arranged on the groove.

[0009] As a further improvement of the present invention, in order to ensure the correspondence between the front and rear ends of the piston and improve the stability of the piston assembly; the position of the front end inner hole corresponds to the rear end inner hole; the position of the front end outer hole corresponds to the rear end outer hole; the opening sizes of the front end inner hole and the front end outer hole are both larger than the corresponding rear end inner hole and the rear end outer hole.

[0010] As a further improvement of the utility model, in order to limit the axial movement of the valve plate, an oil channel can be formed between the notch provided on the valve plate and the limiting device, and the limiting device is in an "L" shape as a whole.

[0011] As a further improvement of the utility model, in order to prevent the sealing film from falling off and moving, the groove is arranged in a step shape, and the steps are transitioned by chamfering, and a plurality of the grooves are arranged.

[0012] As a further improvement of the utility model, in order to improve the stability of the piston assembly, the front end inner hole and the front end outer hole arranged at the front end of the piston assembly body, and the rear end inner hole and the rear end outer hole arranged at the rear end of the piston assembly body are evenly arranged, and a plurality of them are arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings:

[0014] Figure 1 It is a three-dimensional diagram of the utility model.

[0015] Figure 2 It is the front view of the utility model.

[0016] Figure 3 For the utility model Figure 2 Cross-section at AA.

[0017] Figure 4 For the utility model Figure 3 Enlarged view of point B in the middle.

[0018] Figure 5 It is a rear view of the utility model.

[0019] Among them, 1 is the piston assembly body, 2 is the mounting hole, 3 is the front end inner channel, 4 is the front end outer channel, 5 is the rear end inner channel, 6 is the rear end outer channel, 7 is the sealing rubber sheet, 8 is the groove, 9 is the conical spring, 10 is the valve sheet, 11 is the oil channel, 12 is the valve sheet hole, 13 is the notch, and 14 is the limit device. DETAILED DESCRIPTION

[0020] like Figure 1-5 As shown, in order to achieve the above-mentioned purpose, the utility model provides a new type of one-way valve piston assembly with high sealing performance, including a piston assembly body 1, the piston assembly body 1 is arranged in a circular shape as a whole; the front end of the piston assembly body 1 is provided with a front end inner hole 3 and a front end outer hole 4; the rear end of the piston assembly body 1 is provided with a rear end inner hole 5 and a rear end outer hole 6; the center position of the piston assembly body 1 is penetrated by a mounting hole 2; the piston assembly body 1 is also provided with a one-way valve device, and the one-way valve device is provided with an oil channel 11; the outer periphery of the piston assembly body 1 is also provided with a sealing mechanism; the one-way valve device includes a valve plate 10 and a limit device 14 embedded in the piston assembly body 1; a conical spring 9 is provided between the valve plate 10 and the limit device 14; a notch 13 is provided on the valve plate 10; the valve plate 10 A valve plate hole 12 is also provided on it; the sealing mechanism includes a groove 8 arranged on the outer periphery of the piston assembly body 1, and a sealing rubber sheet 7 is also provided on the groove 8; the position of the front end inner hole 3 corresponds to the rear end inner hole 5; the position of the front end outer hole 4 corresponds to the rear end outer hole 6; the opening sizes of the front end inner hole 3 and the front end outer hole 4 are both larger than the corresponding rear end inner hole 5 and rear end outer hole 6; an oil channel 11 can be formed between the notch 13 and the limit device 14 provided on the valve plate 10, and the limit device 14 is "L"-shaped as a whole; the groove 8 is arranged in a step shape, and the steps are transitioned by chamfering, and the groove 8 is provided in a plurality of them; the front end inner hole 3 and the front end outer hole 4 provided at the front end of the piston assembly body 1, and the rear end inner hole 5 and the rear end outer hole 6 provided at the rear end of the piston assembly body 1 are all evenly arranged, and a plurality of them are provided.

[0021] When the utility model is working, the piston rod penetrates into the mounting hole 2, driving the piston assembly body 1 to reciprocate up and down; the conical spring 9 is installed between the limit device 14 and the valve plate 10, and the spring is in a compressed state to provide a pre-tightening force for the valve plate; the valve plate 10 embedded in the piston assembly body 1 is restricted by the limit device 14 to restrict the axial movement of the valve plate 10, and the limit device 14 is "L" shaped as a whole; the valve plate 10 is provided with a notch 13 and a valve plate hole 12, and an oil channel 11 can be formed between the notch 13 and the limit device 14, and the oil passes through the valve plate The hole 12 enters the oil channel 11 for discharge, realizing the unidirectional flow of oil and extending the service life of the piston assembly; the outer periphery of the piston assembly body 1 is provided with a groove 8, which is arranged in a step shape, and the steps are transitioned by chamfering, and there are several grooves 8; the groove 8 is also provided with a sealing rubber sheet 7 to improve the sealing performance of the piston assembly; the front end of the piston assembly body 1 is evenly provided with a front end inner hole 3 and a front end outer hole 4, and the rear end is evenly provided with a rear end inner hole 5 and a rear end outer hole 6, which ensures the stability of the piston assembly.

[0022] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A novel one-way valve piston assembly with high sealing performance, comprising a piston assembly body (1), wherein the piston assembly body (1) is arranged in a circular shape as a whole, and is characterized in that: The front end of the piston assembly body (1) is provided with a front inner hole (3) and a front outer hole (4); the rear end of the piston assembly body (1) is provided with a rear inner hole (5) and a rear outer hole (6); a mounting hole (2) is provided through the center of the piston assembly body (1); a one-way valve device is also provided inside the piston assembly body (1), and an oil channel (11) is provided on the one-way valve device; and a sealing mechanism is also provided on the outer periphery of the piston assembly body (1).

2. A novel one-way valve piston assembly with high sealing performance according to claim 1, characterized in that: The one-way valve device comprises a valve plate (10) and a limit device (14) which are embedded in the piston assembly body (1); a conical spring (9) is arranged between the valve plate (10) and the limit device (14); a notch (13) is arranged on the valve plate (10); and a valve plate hole (12) is also arranged on the valve plate (10).

3. A novel one-way valve piston assembly with high sealing performance according to claim 1, characterized in that: The sealing mechanism comprises a groove (8) arranged on the outer periphery of the piston assembly body (1), and a sealing rubber sheet (7) is also arranged on the groove (8).

4. A novel one-way valve piston assembly with high sealing performance according to claim 1, characterized in that: The front inner hole (3) is located at a position corresponding to the rear inner hole (5); the front outer hole (4) is located at a position corresponding to the rear outer hole (6); and the opening sizes of the front inner hole (3) and the front outer hole (4) are both larger than the corresponding rear inner hole (5) and rear outer hole (6).

5. A novel one-way valve piston assembly with high sealing performance according to claim 2, characterized in that: An oil channel (11) can be formed between the notch (13) provided on the valve plate (10) and the limiting device (14), and the limiting device (14) is in an "L" shape as a whole.

6. A novel one-way valve piston assembly with high sealing performance according to claim 3, characterized in that: The grooves (8) are arranged in a step shape, with transitions between the steps being achieved through chamfers, and a plurality of the grooves (8) are arranged.

7. A novel one-way valve piston assembly with high sealing performance according to claim 1, characterized in that: The front end inner hole (3) and the front end outer hole (4) provided at the front end of the piston assembly body (1), and the rear end inner hole (5) and the rear end outer hole (6) provided at the rear end of the piston assembly body (1) are evenly arranged, and a plurality of them are provided.

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