A vehicle shock absorber link device with enhanced fatigue resistance

Abstract

The utility model discloses a kind of automobile shock absorber connecting rod devices of enhanced fatigue resistance, comprising: shock absorber, shock absorber push rod, oil passage one, oil storage cavity, two oil outlets, two oil pipes, two oil passages two, two ball bearings, oil passage three, oil outlet pipe, check valve and oil pump, the oil passage one is set on shock absorber push rod, the oil storage cavity is set in the lower part of shock absorber push rod, two the oil outlet is symmetrically set in the lower part of shock absorber push rod.The utility model provides a kind of automobile shock absorber connecting rod devices of enhanced fatigue resistance, can avoid the uneven distribution of damping force caused by oil accumulation, make shock absorber maintain stable damping characteristic in compression and rebound process, reduce the resistance to piston, valve piece and other components, so that shock absorber can respond to road bumps or steering operation faster, and the smooth discharge of lubricating oil means that the friction between moving parts is continuously and effectively lubricated.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, specifically to a connecting rod device for automotive shock absorbers that enhances fatigue resistance. Background Technology

[0002] Shock absorbers are mainly used to suppress the oscillations when the spring absorbs shock and rebounds, as well as the impact from the road surface. When driving over uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jumping.

[0003] A search revealed that Chinese Patent Application No. 202120187907.9, filed on January 25, 2021, discloses a fatigue-resistant automotive shock absorber spring disc device. This device includes an upper shock absorber disc and a lower shock absorber disc. A fixed base is fixedly connected inside the upper shock absorber disc. A sliding rod is fixedly connected to the side wall of the fixed base near the lower shock absorber disc. A sliding cylinder is fitted over the sliding rod. A push rod is fixedly connected to the bottom of the inner cylinder of the sliding cylinder. An auxiliary spring is fixedly connected to the bottom of the inner cylinder of the sliding cylinder. The other end of the auxiliary spring is fixedly connected to the bottom end of the sliding rod. An oil reservoir is formed inside the sliding rod. A push rod hole is formed at the bottom of the oil reservoir. The upper end of the push rod passes through the auxiliary spring and the push rod hole and extends into the oil reservoir, and is fixedly connected to a piston. This invention reduces the friction between the sliding rod and the sliding cylinder, making the shock absorber spring easier to compress and stretch, thus improving the fatigue resistance and damping performance of the automotive shock absorber.

[0004] However, the above structure still has shortcomings. During operation, lubricating oil will continuously accumulate in the shock absorber and cannot be discharged. This may cause the auxiliary spring to be unable to adjust the damping force in time during compression. The accumulation of lubricating oil will hinder the flexible movement of moving parts such as pistons and valves inside the shock absorber, making the shock absorber's response speed to road impacts slower. The accumulation of lubricating oil may put additional pressure on the shock absorber seals (such as oil seals, O-rings, etc.), causing the seals to deform, age, or break, resulting in uneven distribution of damping force and making the shock absorber unstable during compression and rebound. Utility Model Content

[0005] The purpose of this invention is to provide a linkage device for an automotive shock absorber that enhances fatigue resistance. This device avoids uneven damping force distribution caused by oil buildup, ensuring stable damping characteristics during compression and rebound. It reduces resistance to components such as pistons and valves, allowing the shock absorber to respond more quickly to road bumps or steering maneuvers. Smooth lubrication ensures continuous and effective lubrication between moving parts, significantly reducing the wear rate of pistons, cylinders, and valves. The lubricating oil carries away heat generated by friction during its flow, preventing excessively high internal temperatures in the shock absorber. Furthermore, the smooth drainage and circulation of the lubricating oil prevents it from deteriorating or decreasing in viscosity due to high temperatures, maintaining its lubrication and cooling properties and further protecting components from high-temperature damage. This addresses the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a connecting rod device for an automotive shock absorber with enhanced fatigue resistance, characterized in that it comprises: a shock absorber, a shock absorber push rod, an oil passage one, an oil reservoir, two oil outlets, two oil pipes, two oil passages two, two ball bearings, an oil passage three, an oil outlet pipe, a one-way valve, and an oil pump. The first oil passage is located on the shock absorber push rod, the oil reservoir is located at the lower part of the shock absorber push rod, and the two oil outlets are symmetrically located at the lower part of the shock absorber push rod. The two oil pipes... The system is fixedly installed on the shock absorber push rod. The oil pipe is connected to the corresponding oil outlet. Two oil passages are opened at the bottom of the shock absorber push rod and are connected to the corresponding oil pipe. Two ball bearings are embedded in the shock absorber push rod. An oil passage is opened at the bottom of the shock absorber. The oil outlet pipe is fixedly installed on the outer wall of the shock absorber and is the same as the oil passage. The one-way valve is fixedly installed on the oil outlet pipe. The oil pump is fixedly installed on the outer wall of the shock absorber and is fixedly connected to the one-way valve.

[0007] Furthermore, it also includes: a spring base, a buffer spring, a spring top cover, an auxiliary spring, a push rod, and a piston, wherein the spring base is fixedly installed on the outer wall of the shock absorber.

[0008] Furthermore, the buffer spring is mounted on a spring base.

[0009] Furthermore, the shock absorber push rod is slidably mounted on the shock absorber, and the spring top cover is threaded onto the shock absorber push rod.

[0010] Furthermore, the auxiliary spring is fixedly installed on the bottom inner wall of the shock absorber, and the auxiliary spring is fixedly connected to the bottom of the shock absorber push rod.

[0011] Furthermore, the push rod is fixedly installed on the bottom inner wall of the shock absorber, and the push rod is slidably connected to the shock absorber push rod.

[0012] Furthermore, the piston is fixedly mounted on the top end of the push rod, and the piston and the oil reservoir are slidably connected.

[0013] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are: This invention can avoid uneven distribution of damping force caused by oil accumulation, so that the shock absorber can maintain stable damping characteristics during compression and rebound, reduce resistance to components such as pistons and valves, and enable the shock absorber to respond more quickly to road bumps or steering operations. It also prevents the oil from deteriorating or decreasing in viscosity due to high temperature, thereby maintaining its lubrication and cooling performance and further protecting the components from high temperature damage. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a connecting rod device for an automobile shock absorber that enhances fatigue resistance according to the present invention. Figure 2 This is a partial side sectional view of the shock absorber and shock absorber push rod of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of part A in the middle.

[0015] In the diagram: 1. Shock absorber; 2. Spring base; 3. Buffer spring; 4. Shock absorber push rod; 5. Spring top cover; 6. Oil passage one; 7. Oil reservoir; 8. Oil outlet; 9. Oil pipe; 10. Oil passage two; 11. Ball bearing; 12. Auxiliary spring; 13. Push rod; 14. Piston; 15. Oil passage three; 16. Oil outlet pipe; 17. Check valve; 18. Oil pump. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] This utility model provides, for example Figure 1-3As shown, an automotive shock absorber linkage device for enhanced fatigue resistance includes: a shock absorber 1, a shock absorber push rod 4, an oil passage 6, an oil reservoir 7, two oil outlets 8, two oil pipes 9, two oil passages 10, two ball bearings 11, an oil passage 15, an oil outlet pipe 16, a one-way valve 17, and an oil pump 18. The oil passage 6 is located on the shock absorber push rod 4. The oil reservoir 7 is located at the lower part of the shock absorber push rod 4. The two oil outlets 8 are symmetrically located at the lower part of the shock absorber push rod 4. The two oil pipes 9 are fixedly installed on the shock absorber push rod 4 and are connected to the corresponding oil outlets 8. The two oil passages 10 are both located on the shock absorber push rod 4. At the bottom, the second oil passage 10 is connected to the corresponding oil pipe 9. Both of the two ball bearings 11 are embedded in the shock absorber push rod 4. The third oil passage 15 is opened at the bottom of the shock absorber 1. The oil outlet pipe 16 is fixedly installed on the outer wall of the shock absorber 1 and is the same as the third oil passage 15. The one-way valve 17 is fixedly installed on the oil outlet pipe 16. The oil pump 18 is fixedly installed on the outer wall of the shock absorber 1 and is fixedly connected to the one-way valve 17. The shock absorber push rod 4 is set in an inverted T shape. Both of the two oil outlets 8 are set at an angle to facilitate the flow of lubricating oil. The function of the one-way valve 17 is to prevent oil from flowing back from the oil pump 16 into the shock absorber.

[0018] In addition, it also includes: spring base 2, buffer spring 3, spring top cover 5, auxiliary spring 12, top rod 13 and piston 14, wherein the spring base 2 is fixedly installed on the outer wall of the shock absorber 1.

[0019] In addition, the buffer spring 3 is mounted on the spring base 2.

[0020] In addition, the shock absorber push rod 4 is slidably mounted on the shock absorber 1, and the spring top cover 5 is threadedly mounted on the shock absorber push rod 4.

[0021] In addition, the auxiliary spring 12 is fixedly installed on the bottom inner wall of the shock absorber 1, and the auxiliary spring 12 is fixedly connected to the bottom of the shock absorber push rod 4.

[0022] In addition, the top rod 13 is fixedly installed on the bottom inner wall of the shock absorber 1, and the top rod 13 is slidably connected to the shock absorber push rod 4.

[0023] In addition, the piston 14 is fixedly installed at the top of the push rod 13, and the piston 14 is slidably connected to the oil storage chamber 7.

[0024] Working principle: When the shock absorber push rod 4 moves downward, the auxiliary spring 12 is compressed, and the piston 14 moves upward in the oil reservoir 7, causing the lubricating oil in the oil reservoir 7 to flow out through the oil outlet 8 and squeeze the lubricating oil into the second oil passage 10. When the ball 11 rolls in the shock absorber 1, the lubricating oil flows out with the ball 11, while the buffer spring and auxiliary spring 12 return to their original positions. The piston 14 moves downward, causing some lubricating oil to be squeezed out intermittently. This reduces the friction between the ball 11 and the inner wall of the shock absorber 1, making it easier for the shock absorber spring to compress and stretch, thus improving the fatigue resistance and shock absorption of the shock absorber. Excess oil flows into the oil outlet pipe 16 through the third oil passage 15 and is then pumped back into the car's lubrication system by the oil pump through the one-way valve 17.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A linkage device for an automotive shock absorber with enhanced fatigue resistance, characterized in that, include: The shock absorber (1), shock absorber push rod (4), oil passage one (6), oil reservoir (7), two oil outlets (8), two oil pipes (9), two oil passage two (10), two ball bearings (11), oil passage three (15), oil outlet pipe (16), one-way valve (17), and oil pump (18) are provided. The oil passage one (6) is located on the shock absorber push rod (4), the oil reservoir (7) is located at the lower part of the shock absorber push rod (4), the two oil outlets (8) are symmetrically located at the lower part of the shock absorber push rod (4), and the two oil pipes (9) are fixedly installed on the shock absorber push rod (4). The oil pipes (9) are connected to the corresponding oil outlets. (8) Connected, the two oil passages (10) are both opened at the bottom of the shock absorber push rod (4), the oil passages (10) are connected to the corresponding oil pipes (9), the two balls (11) are both embedded in the shock absorber push rod (4), the oil passage (15) is opened at the bottom of the shock absorber (1), the oil outlet pipe (16) is fixedly installed on the outer wall of the shock absorber (1) and is the same as the oil passage (15), the one-way valve (17) is fixedly installed on the oil outlet pipe (16), the oil pump (18) is fixedly installed on the outer wall of the shock absorber (1), and the oil pump (18) is fixedly connected to the one-way valve (17).

2. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 1, characterized in that: It also includes: a spring base (2), a buffer spring (3), a spring top cover (5), an auxiliary spring (12), a top rod (13), and a piston (14), wherein the spring base (2) is fixedly installed on the outer wall of the shock absorber (1).

3. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 2, characterized in that: The buffer spring (3) is mounted on the spring base (2).

4. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 2, characterized in that: The shock absorber push rod (4) is slidably mounted on the shock absorber (1), and the spring top cover (5) is threaded onto the shock absorber push rod (4).

5. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 2, characterized in that: The auxiliary spring (12) is fixedly installed on the bottom inner wall of the shock absorber (1), and the auxiliary spring (12) is fixedly connected to the bottom of the shock absorber push rod (4).

6. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 2, characterized in that: The top rod (13) is fixedly installed on the bottom inner wall of the shock absorber (1), and the top rod (13) is slidably connected to the shock absorber push rod (4).

7. The automotive shock absorber linkage device with enhanced fatigue resistance according to claim 2, characterized in that: The piston (14) is fixedly installed at the top of the push rod (13), and the piston (14) and the oil reservoir (7) are slidably connected.

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