Shock absorber piston capable of improving heat dissipation performance
By setting multiple throttling holes and oblique through holes on the shock absorber piston, combined with oil guide rings and baffles, the piston overheating problem is solved, achieving better heat dissipation and sealing effects, and extending the service life of the shock absorber.
Patent Information
- Application Number
- CN202520158771.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing shock absorbers suffer from piston overheating during use, leading to expansion and deformation, which affects their service life and results in poor heat dissipation.
Multiple first throttling holes, second throttling holes, oblique through holes, and connecting grooves are set on the piston body of the shock absorber. The hydraulic oil flow is guided by the oil guide ring and the connecting ring, which increases the flow contact area and achieves balanced flow. Combined with the baffle, the sealing and heat dissipation effects are improved.
It improves the heat dissipation of hydraulic oil, enhances the sealing and cushioning quality of the piston, and extends the service life of the shock absorber.
Smart Images
Figure CN223594838U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shock absorber, concretely to a shock absorber piston of improving heat dissipation. BACKGROUND
[0002] The main function of the shock absorber is that when the body of the motor vehicle and the axle or the body and the wheel are relatively moved due to the vibration, the piston in the shock absorber moves up and down, the hydraulic oil in the shock absorber repeatedly flows into the oil storage cylinder through different throttle holes, at this time, the friction between the throttle hole wall and the hydraulic oil and the internal friction between the hydraulic oil molecules form damping force to the vibration, so that the vibration energy of the motor vehicle is converted into the heat energy of the oil, and then the heat energy is absorbed by the shock absorber and dissipated into the atmosphere.
[0003] During use, when the vehicle passes through uneven road surface, the shock absorber will be impacted and vibrated to generate movement resistance, so that part of kinetic energy is converted into heat energy in the repeated flow of the hydraulic oil in the shock absorber, so that the shock absorber generates heat, and the existing piston in the shock absorber cannot dissipate heat when the hydraulic oil flows, so that the piston is easy to deform due to expansion when overheating, and even collision in the inner part of the cylinder body, which affects the service life of the shock absorber. UTILITY MODEL CONTENTS
[0004] In view of the defects of the prior art, the utility model provides a shock absorber piston of improving heat dissipation, which solves the problems mentioned in the background.
[0005] The utility model provides the following technical scheme: a shock absorber piston of improving heat dissipation, comprising: a piston body, a groove formed in the outer wall of the piston body and a mounting hole arranged in the middle part of the piston body for mounting a piston rod, further comprising: a plurality of first throttle holes are formed in the inside of the piston body, the inside of the first throttle hole is provided with a second throttle hole, and the second throttle hole is equidistantly formed in the outer periphery of the mounting hole, a plurality of inclined through holes are connected between the second throttle hole and the first throttle hole, the plurality of second throttle holes are connected in a ring shape through a communication groove, and the communication groove is formed in the middle part of the piston body.
[0006] Further, the communication groove is annularly formed in the inside of the piston body, and the center line of the communication groove coincides with the center line of the piston body.
[0007] Further, the upper end of the piston body is fixedly connected with a baffle, and the baffle is fixedly arranged in a ring shape on the outside of the first throttle hole.
[0008] Further, an oil guide convex ring is arranged between the first throttle hole and the second throttle hole, the oil guide convex ring is fixedly connected to the surface of the piston body, and the oil guide convex ring is arranged above the inclined through hole.
[0009] Further, the second throttle hole and the mounting hole are connected with a connecting convex ring, the connecting convex ring is fixedly connected to the top outer wall of the mounting hole, and the surface of the connecting convex ring is provided with an arc part guiding the second throttle hole.
[0010] Further, the upper end of the oblique through hole is connected with the second throttle hole, the lower end of the oblique through hole is connected with the first throttle hole, and a plurality of oblique through holes are arranged in parallel.
[0011] Further, the first throttle hole is arranged in four in the inner ring of the piston body, and the flow cross section of the first throttle hole is larger than that of the second throttle hole.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. In the utility model, the oblique through hole is arranged between the first throttle hole and the second throttle hole, so that the hydraulic oil in the first throttle hole and the second throttle hole can flow horizontally through the oblique through hole, and the communication groove is arranged in the middle of the second throttle hole, so that the hydraulic oil flows through the plurality of second throttle holes in the middle of the piston body, the contact area of the hydraulic oil in the piston body is increased, the communication effect between the plurality of throttle holes is realized, the heat dissipation effect of the hydraulic oil during flow is ensured, the balance of the hydraulic oil during movement is ensured, and the buffering quality of the shock absorber is improved.
[0014] 2. In the utility model, the baffle is fixedly connected to the upper end of the piston body, so that the contact surface of the outer wall of the piston body is increased during use, and the baffle can guide the hydraulic oil outside, so that the sealing performance of the piston in the cylinder body is ensured, and the structure is simple and convenient to process. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structure schematic view of the shock absorber piston for improving the heat dissipation of the utility model;
[0016] Figure 2 It is a sectional structure schematic view of the shock absorber piston for improving the heat dissipation of the utility model;
[0017] Figure 3 It is a top view structure schematic view of the shock absorber piston for improving the heat dissipation of the utility model;
[0018] Figure 4 It is a structure schematic view of the communication groove and the second throttle hole in the utility model.
[0019] In the figure: 1, piston body; 2, baffle; 3, groove; 4, mounting hole; 5, first throttle hole; 6, second throttle hole; 7, oblique through hole; 8, communication groove. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0021] Please refer to Figures 1-4 A shock absorber piston with improved heat dissipation, comprising: a piston body 1, a baffle 2, a groove 3 provided on the outer wall of the piston body 1, a mounting hole 4 provided in the middle of the piston body 1 for mounting a piston rod, a first throttle hole 5, a second throttle hole 6, an oblique through hole 7 and a communication groove 8, further comprising: the baffle 2 is fixedly connected to the upper end of the piston body 1, so that the outer periphery of the piston body 1 is raised, ensuring that the piston body 1 has good contact with the outer wall of the shock absorber cylinder, which is conducive to improving the heat dissipation effect of the piston body 1, and the piston body 1 and the baffle 2 adopt an integral molding structure, specifically, the piston body 1 is made of a powder metallurgy material, which has high structural density and good tensile strength, four first throttle holes 5 are provided in the interior of the piston body 1, the baffle 2 is fixedly arranged outside the first throttle holes 5 in a ring shape, ensuring the throttling effect of the first throttle holes 5, and a second throttle hole 6 is arranged inside the first throttle hole 5, at the same time, the flow cross section of the first throttle hole 5 is larger than that of the second throttle hole 6, and in order to realize the flow guiding effect of the first throttle hole 5 and the second throttle hole 6, an oil guiding convex ring is arranged between the first throttle hole 5 and the second throttle hole 6 and fixedly connected to the surface of the piston body 1, through the arrangement of the oil guiding convex ring, the oil guiding convex ring can guide the hydraulic oil on the surfaces of the first throttle hole 5 and the second throttle hole 6, and considering the oil guiding effect of the second throttle hole 6, the second throttle hole 6 is provided outside the outer periphery of the mounting hole 4 in a ring shape at equal intervals, at the same time, a connecting convex ring is connected between the second throttle hole 6 and the mounting hole 4 and fixedly connected to the top outer wall of the mounting hole 4, and an arc-shaped part guiding towards the second throttle hole 6 is arranged on the surface of the connecting convex ring, through such arrangement, the hydraulic oil on the outer wall of the piston rod can be guided to the second throttle hole 6 through the connecting convex ring.
[0022] Further, considering improving the heat dissipation effect of the hydraulic oil circulating inside the piston, a plurality of inclined through holes 7 are connected between the second throttle hole 6 and the first throttle hole 5, and the oil guide convex ring is arranged above the inclined through hole 7, which ensures the stability of the piston body 1 structure. Specifically, the upper end of the inclined through hole 7 is connected with the second throttle hole 6, and the lower end of the inclined through hole 7 is connected with the first throttle hole 5, so that the hydraulic oil inside the second throttle hole 6 can flow to the first throttle hole 5 through the inclined through hole 7. Moreover, the inclined through hole 7 is arranged in three, and the three inclined through holes 7 are arranged in parallel from top to bottom, which ensures the circulation effect inside the inclined through hole 7. At the same time, in order to increase the contact area of the hydraulic oil inside the piston, the plurality of second throttle holes 6 are connected in a ring shape through the communication groove 8, and the communication groove 8 is arranged in the middle of the piston body 1 in a ring shape, and the center line of the communication groove 8 coincides with the center line of the piston body 1. Therefore, the hydraulic oil inside the second throttle hole 6 can flow transversely between the plurality of second throttle holes 6 through the communication groove 8. The structure is simple, and the contact area of the hydraulic oil flowing inside the piston body 1 is increased, which is beneficial to improve the heat dissipation effect of the piston during work.
[0023] Working principle: when in use, the piston body 1 is installed at the bottom end of the piston rod through the installation hole 4, and the baffle 2 is fixedly connected at the upper end of the piston body 1, so that the contact area of the piston body 1 with the inner wall of the shock absorber cylinder is increased, which is beneficial to improve the heat dissipation effect of the inner wall of the cylinder. Moreover, the baffle 2 can precisely contact and guide the hydraulic oil from above through the arrangement of the first throttle hole 5 and the second throttle hole 6 above the internal first throttle hole 5 and the second throttle hole 6. At the same time, the piston body 1 can make the hydraulic oil flow inside the first throttle hole 5 and the second throttle hole 6 through the extension and contraction of the piston rod. The inclined through hole 7 is arranged between the first throttle hole 5 and the second throttle hole 6, so that the hydraulic oil between the first throttle hole 5 and the second throttle hole 6 can flow through the inclined through hole 7, which increases the contact area of the hydraulic oil inside the piston body 1, and is beneficial to dissipate the heat of the hydraulic oil passing through the piston body 1. Moreover, the communication groove 8 is arranged in the middle of the second throttle hole 6, so that the plurality of annularly arranged second throttle holes 6 can flow through the communication groove 8, which ensures the flow balance of the hydraulic oil inside the piston body 1, and improves the passing effect of the hydraulic oil inside the piston body 1, further realizes the heat dissipation of the hydraulic oil inside the piston body 1, and thus completes the working principle of the shock absorber piston.
[0024] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A shock absorber piston having improved heat dissipation, comprising: Piston body (1), recess (3) and installation hole (4) provided in the middle of piston body (1) for installing piston rod, characterized by further comprising: a plurality of first throttling holes (5) are provided in the inside of piston body (1), and the inside of first throttling hole (5) is provided with second throttling hole (6), and second throttling hole (6) is provided in the outer periphery of installation hole (4) in equidistant annular, second throttling hole (6) is connected with a plurality of inclined through holes (7), and a plurality of second throttling holes (6) are connected in annular through communication groove (8), and communication groove (8) is provided in the middle of piston body (1).
2. The shock absorber piston of claim 1 wherein, The communication groove (8) is annularly provided in the inside of the piston body (1), and the center line of the communication groove (8) coincides with the center line of the piston body (1).
3. The shock absorber piston of claim 2 wherein, The upper end of the piston body (1) is fixedly connected with the baffle (2), and the baffle (2) is fixedly provided outside the first throttling hole (5) in annular.
4. The shock absorber piston of claim 1 wherein, The first throttling hole (5) and the second throttling hole (6) are provided with an oil guide convex ring, and the oil guide convex ring is fixedly connected to the surface of the piston body (1), and the oil guide convex ring is provided above the inclined through hole (7).
5. The shock absorber piston of claim 1 wherein, The second throttling hole (6) and the installation hole (4) are connected with a connecting convex ring, and the connecting convex ring is fixedly connected to the top outer wall of the installation hole (4), and the surface of the connecting convex ring is provided with an arc part guiding to the second throttling hole (6).
6. The shock absorber piston of claim 4 wherein, The upper end of the inclined through hole (7) is connected with the second throttling hole (6), and the lower end of the inclined through hole (7) is connected with the first throttling hole (5), and a plurality of inclined through holes (7) are arranged in parallel.
7. The shock absorber piston of claim 6 wherein, The first throttling hole (5) is annularly provided in the inside of the piston body (1) in equidistant four, and the flow cross section of the first throttling hole (5) is larger than that of the second throttling hole (6).