Piston for adjustable shock absorber of automobile

Abstract

The utility model provides a piston for an adjustable shock absorber of an automobile, which relates to the technical field of pistons, and comprises a piston body and rubber-coated PTPE, the outer ring surface of the piston body is provided with an outer connecting groove, the rubber-coated PTPE is sleeved in the outer connecting groove, the inner upper part of the piston body is provided with a skirt inner thread, and the outer ring surface of the piston body is provided with an outer connecting groove. The rubber-coated PTPE is arranged in the piston body, a recovery supporting boss is arranged in the middle of the interior of the piston body, a compression supporting boss is arranged at the lower end of the piston body, the rubber-coated PTPE is detachably connected with the piston body, three sets of compression circulation holes are annularly formed in the lower portion of the interior of the piston body, and the compression circulation holes are of a trapezoidal circulation hole structure. Three sets of recovery circulation holes are annularly formed in the lower portion in the piston body, and the recovery circulation holes are of a triangular circulation hole structure. According to the piston, the design of the skirt threads is adopted, the machining process of the piston is improved, machining procedures are reduced, the function that damping force can be adjusted in the using process of the piston is achieved, the safety performance of an automobile shock absorber is improved, and the piston is safer, more economical and more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to a piston used for an adjustable shock absorber of an automobile. Background Art

[0002] With the continuous development of society, cars have become a common means of transportation in people's daily lives. However, while people enjoy the convenience brought by cars, they also have high demands for car comfort. The function of the car's suspension system is to support the body and improve the ride quality. Different suspension settings can give the driver different driving experiences. Shock absorbers are the most sophisticated and complex mechanical components in the car's suspension system. Their quality directly affects the smoothness, operational stability, and comfort of the entire vehicle.

[0003] In the specification of an automobile shock absorber piston in the prior art (Announcement No. CN208951200U), it is mentioned that "a central through hole is provided in the axial center of the piston body, and an oil storage chamber is provided inside the piston body which is concentric with the central through hole and annular around the central through hole. A plurality of horizontally arranged and annular first oil guide plates are fixedly connected to the side wall of the oil storage chamber away from the central through hole, and a plurality of horizontally arranged and annular second oil guide plates are fixedly connected to the side wall of the oil storage chamber close to the central through hole. The first oil guide plates and the second oil guide plates are staggered at equal intervals to form an oil circulation channel." However, the automobile shock absorber piston in the prior art cannot be quickly adjusted to adapt to road conditions, and is prone to causing deformation of the valve plate, making it neither flexible, safe nor practical. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a piston for an adjustable shock absorber of an automobile is provided to solve the problems in the existing technology that the automobile shock absorber piston cannot be quickly adjusted to adapt to road conditions, easily causes valve plate deformation, and is not flexible, safe and practical.

[0005] To achieve the above-mentioned purpose, a piston for an adjustable shock absorber of an automobile is provided, comprising a piston body and a PTPE-coated piston, wherein the outer ring surface of the piston body is provided with an external connecting groove, and the PTPE-coated piston is sleeved in the external connecting groove, the upper part of the piston body is provided with a skirt internal thread, and the middle part of the piston body is provided with a restoration support boss, and the lower end of the piston body is provided with a compression support boss, the centers of the piston body, the PTPE-coated piston and the skirt internal thread are all located on the same axis, and the PTPE-coated piston body is detachably connected.

[0006] Furthermore, the piston body is provided with three groups of compression circulation holes in the lower ring, and the compression circulation holes adopt a trapezoidal circulation hole structure.

[0007] Furthermore, three groups of restoration circulation holes are arranged in the lower ring of the piston body, and the restoration circulation holes adopt a triangular circulation hole structure.

[0008] Furthermore, the compression circulation hole and the restoration circulation hole provided in the lower part of the piston body are adjacent to each other, and the compression circulation hole and the restoration circulation hole are both centrally symmetrical about the center of the piston body.

[0009] Furthermore, the skirt internal thread and the piston rod are screwed together by means of screw threads, and the skirt internal thread and the piston rod are split and connected together.

[0010] Furthermore, a circular through hole is provided at the center of the piston body, and the internal thread of the skirt and the center of the circular through hole are located on the same axis.

[0011] The beneficial effects of the present invention are:

[0012] 1. The setting of the compression flow hole and the restoration flow hole in the utility model forms a two-way flow hole, which realizes the function of oil sealing and oil out of the valve system flow hole. Moreover, the setting of the compression support boss in the middle part of the piston body and the restoration support boss in the lower part is to prevent the valve plate from deforming, reduce the deformation of the valve plate during operation, make the damping force more stable and reliable, and increase the service life of the valve plate.

[0013] 2. The setting of the internal thread of the upper skirt of the piston body in the utility model realizes a threaded connection with the piston rod, so that there is an adjustable space inside the piston skirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A bottom-up 3D isometric view of an embodiment of the present invention;

[0015] Figure 2 A top-down 3D isometric view of an embodiment of the present invention;

[0016] Figure 3 A schematic top view of an embodiment of the present utility model;

[0017] Figure 4 It is a cross-sectional view of an embodiment of the present invention.

[0018] In the figure: 1. Piston body; 10. External connection groove; 2. PTPE encapsulation; 3. Compression flow hole; 4. Restoration flow hole; 5. Compression support boss; 6. Restoration support boss; 7. Skirt internal thread. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the present invention. The described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0020] The specific implementation of the present utility model will be described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a bottom-up 3D isometric view of an embodiment of the present invention. Figure 2 This is a top 3D isometric view of an embodiment of the present invention. Figure 3 A schematic top view of an embodiment of the present invention and Figure 4 It is a cross-sectional view of an embodiment of the present invention.

[0022] Reference Figures 1 to 4 As shown, the utility model provides a piston for an adjustable shock absorber of an automobile, comprising a piston body 1 and a rubber-coated PTPE 2. The outer ring surface of the piston body 1 is provided with an external connecting groove 10, and the rubber-coated PTPE 2 is sleeved in the external connecting groove 10. The upper inner part of the piston body 1 is provided with a skirt internal thread 7, and the middle inner part of the piston body 1 is provided with a restoration support boss 6, and the lower end of the piston body 1 is provided with a compression support boss 5. The centers of the piston body 1, the rubber-coated PTPE 2 and the skirt internal thread 7 are all located on the same axis, and the rubber-coated PTPE 2 and the piston body 1 are detachably connected.

[0023] In this embodiment, three groups of compression circulation holes 3 are provided in the lower inner ring of the piston body 1, and the compression circulation holes 3 adopt a trapezoidal circulation hole structure; three groups of restoration circulation holes 4 are provided in the lower inner ring of the piston body 1, and the restoration circulation holes 4 adopt a triangular circulation hole structure; the compression circulation holes 3 and the restoration circulation holes 4 provided in the lower inner part of the piston body 1 are adjacent to each other, and the compression circulation holes 3 and the restoration circulation holes 4 are both centrally symmetrical about the center of the piston body 1.

[0024] As a preferred embodiment, the setting of the compression flow hole 3 and the restoration flow hole 4 in the utility model forms a two-way flow hole, which realizes the function of oil sealing and oil out of the valve system flow hole. Moreover, the setting of the compression support boss 5 in the middle part of the piston body 1 and the restoration support boss 6 in the lower part is to prevent the valve plate from deforming, reduce the deformation of the valve plate during operation, make the damping force more stable and reliable, and increase the service life of the valve plate.

[0025] In this embodiment, the skirt internal thread 7 and the piston rod are screwed together, and the skirt internal thread 7 and the piston rod are split and connected; a circular through hole is opened in the center of the piston body 1, and the skirt internal thread 7 and the center of the circular through hole are located on the same axis.

[0026] As a preferred embodiment, the setting of the internal thread 7 of the upper skirt of the piston body 1 in the utility model realizes a threaded connection with the piston rod, so that there is an adjustable space inside the piston skirt.

[0027] The utility model can effectively solve the problems in the prior art that the automobile shock absorber piston cannot be quickly adjusted to adapt to road conditions, easily causes valve plate deformation, and is not flexible, safe and practical. The utility model adopts the design of skirt thread, improves the processing technology of the piston, reduces the processing steps, and enables the piston to meet the function of adjustable damping force during use, thereby improving the safety performance of the automobile shock absorber and being safer, more economical and practical.

[0028] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the scope of protection of the present invention.

Claims

1. A piston for an adjustable shock absorber of an automobile, characterized in that: The invention comprises a piston body (1) and a PTPE-coated piston (2), wherein the outer ring surface of the piston body (1) is provided with an external connection groove (10), and the PTPE-coated piston (2) is sleeved in the external connection groove (10), the upper inner portion of the piston body (1) is provided with a skirt internal thread (7), and the middle inner portion of the piston body (1) is provided with a recovery support boss (6), and the lower end of the piston body (1) is provided with a compression support boss (5), the centers of the piston body (1), the PTPE-coated piston (2) and the skirt internal thread (7) are all located on the same axis, and the PTPE-coated piston (2) and the piston body (1) are detachably connected.

2. The piston for an adjustable shock absorber for an automobile according to claim 1, characterized in that: Three groups of compression circulation holes (3) are provided in the lower ring of the piston body (1), and the compression circulation holes (3) adopt a trapezoidal circulation hole structure.

3. The piston for an adjustable shock absorber for an automobile according to claim 1, characterized in that: The piston body (1) is provided with three groups of recovery circulation holes (4) in the lower ring inside, and the recovery circulation holes (4) adopt a triangular circulation hole structure.

4. The piston for an adjustable shock absorber for an automobile according to claim 1, characterized in that: The compression circulation hole (3) and the restoration circulation hole (4) provided in the lower portion of the piston body (1) are arranged adjacent to each other, and the compression circulation hole (3) and the restoration circulation hole (4) are both centrally symmetrical about the center of the piston body (1).

5. The piston for an adjustable shock absorber for an automobile according to claim 1, characterized in that: The skirt internal thread (7) and the piston rod are screwed together via threads, and the skirt internal thread (7) and the piston rod are split and connected.

6. The piston for an adjustable shock absorber for an automobile according to claim 1, characterized in that: A circular through hole is provided at the center of the piston body (1), and the skirt internal thread (7) and the center of the circular through hole are located on the same axis.

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