Novel hydraulic buffer shock absorber
By designing a new hydraulic buffering shock absorber, the movement of the piston rod and floating ring and combined with the circulation of hydraulic oil, the existing hydraulic buffer structure uses multiple parts and complex assembly problems, achieving the effect of simplifying assembly and improving accuracy, and effectively alleviating the impact of under-wheel jumps.
Patent Information
- Application Number
- CN202422352939.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing hydraulic buffer structure uses more parts, is complex in assembly, has high requirements for part accuracy, and has quality risks during assembly.
A new type of hydraulic buffering damper is designed, including a sealing cavity, sleeve, piston rod, floating ring and limit block. The upward movement of the piston rod drives the floating ring and limit block to move, and hydraulic oil is used to circulate through the oil drain groove of the floating ring, increasing the pressure at the upper end of the cavity, thereby achieving vibration damping effect.
Using fewer parts to achieve the same function simplifies the assembly process, reduces the requirements for part accuracy, and effectively alleviates the impact of under-wheel jumps.
Smart Images
Figure CN222992019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbers, and more specifically, to a novel hydraulic buffer shock absorber. Background Art
[0002] A shock absorber is used to suppress the oscillation when the spring rebounds after absorbing shock and the impact from the road surface. It is widely used in automobiles to accelerate the attenuation of the vibration of the vehicle frame and body, so as to improve the ride comfort of the automobile. When passing through an uneven road surface, 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 bounce.
[0003] The existing hydraulic buffer structure requires more parts to achieve this function, and the assembly is complex, with high requirements for the precision of parts, and there is a quality risk during assembly. Content of the Utility Model
[0004] The purpose of the utility model is to provide a novel hydraulic buffer shock absorber to solve the problems raised in the above background art: the existing hydraulic buffer structure requires more parts to achieve this function, and the assembly is complex, with high requirements for the precision of parts, and there is a quality risk during assembly.
[0005] The novel hydraulic buffer shock absorber includes a sealed cavity. The upper end of the cavity is connected with a sealing cover, and the inner surface of the upper end of the sealed cavity is connected with a sleeve. A piston rod is connected inside the sleeve. A floating ring is connected to the outer side of the lower end of the piston rod, and a limiting block is connected to the lower end of the floating ring.
[0006] Preferably, a circular hole is opened in the middle of the sealing cover, and the circular hole opened in the middle of the sealing cover fits the piston rod.
[0007] Preferably, the floating ring includes an arc-shaped floating ring. An oil drain groove is opened on the surface of the arc-shaped floating ring, and a plurality of strip-shaped floating rings are connected to the inner surface of the arc-shaped floating ring. The inner cavity of the sealed cavity is filled with hydraulic oil. At the same time, a plurality of oil drain holes are formed between the arc-shaped floating ring and the strip-shaped floating rings. When the piston rod moves upward, it will drive the limiting block to move upward, thereby driving the floating ring to move upward. As the floating ring moves upward, the hydraulic oil will flow through the plurality of oil drain holes formed between the arc-shaped floating ring and the strip-shaped floating rings to the lower end of the sealed cavity. During the upward movement of the floating ring, an upward pressure will be generated on the hydraulic oil, thereby increasing the pressure in the upper cavity of the sealed cavity.
[0008] Preferably, the upper end of the piston rod is located above the sealed cavity through the through sleeve and the sealing cover. As the pressure in the upper cavity of the sealed cavity gradually increases, the flow rate of the hydraulic oil will be accelerated, thereby generating a downward thrust on the strip-shaped floating ring, and then causing the strip-shaped floating ring to gradually fit the surface of the piston rod as it moves upward until the strip-shaped floating ring completely fits the surface of the piston rod.
[0009] Compared with the prior art, the advantages of the present utility model are as follows:
[0010] 1) In the present utility model, when the piston rod moves upward, it drives the floating ring into the sleeve. Due to the increase in the pressure in the upper cavity, the outer diameter of the floating ring expands and seals with the inner wall of the sleeve. Then, the hydraulic oil can only pass through the oil drain grooves formed on the surface of the floating ring, thereby generating a force value and alleviating the impact of the wheel jumping downward. In this way, the same function can be achieved with fewer parts, and it is easy to assemble. Moreover, the precision requirements of the parts can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0012] Figure 2 is a schematic diagram of the floating ring structure of the present utility model.
[0013] Explanation of the reference numerals in the drawings: 1, sealed cavity; 2, sealing cover; 3, sleeve; 4, piston rod; 5, floating ring; 6, limit block; 7, arc-shaped floating ring; 8, oil drain groove; 9, strip-shaped floating ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] Embodiment: Please refer to Figure 1 , the new type of hydraulic buffer shock absorber includes a sealed cavity 1. The upper end of the cavity 1 is connected with a sealing cover 2, and the inner surface of the upper end of the sealed cavity 1 is connected with a sleeve 3. The inner side of the sleeve 3 is connected with a piston rod 4. The outer side of the lower end of the piston rod 4 is connected with a floating ring 5, and the lower end of the floating ring 5 is connected with a limit block 6.
[0015] Please refer to Figure 1 , a circular hole is opened in the middle part of the sealing cover 2, and the circular hole opened in the middle part of the sealing cover 2 fits with the piston rod 4.
[0016] Please refer to Figure 2, the floating ring 5 includes an arc-shaped floating ring 7. An oil drain groove 8 is provided on the surface of the arc-shaped floating ring 7. A number of strip-shaped floating rings 9 are connected to the inner surface of the arc-shaped floating ring 7. The inner cavity of the sealing cavity 1 is filled with hydraulic oil. At the same time, a number of oil drain holes are formed between the arc-shaped floating ring 7 and the strip-shaped floating rings 9. When the piston rod 4 moves upward, it will drive the limit block 6 to move upward, thereby driving the floating ring 5 to move upward. As the floating ring 5 moves upward, the hydraulic oil will flow through a number of oil drain holes formed by the arc-shaped floating ring 7 and the strip-shaped floating rings 9 to the lower end of the sealing cavity 1. During the upward movement of the floating ring 5, an upward pressure will be generated on the hydraulic oil, thereby increasing the pressure in the upper cavity of the sealing cavity 1.
[0017] Please refer to Figure 1 , the upper end of the piston rod 4 is located above the sealing cavity 1 through the through sleeve 3 and the sealing cover 2. As the pressure in the upper cavity of the sealing cavity 1 gradually increases, the flow rate of the hydraulic oil will be accelerated, thereby generating a downward thrust on the strip-shaped floating ring 9, and then causing the strip-shaped floating ring 9 to gradually fit the surface of the piston rod 4 as the floating ring 5 moves upward until the strip-shaped floating ring 9 completely fits the surface of the piston rod 4. At this time, the inner diameter of the arc-shaped floating ring 7 will gradually expand, thereby expanding the outer diameter of the floating ring. When the outer surface of the floating ring 5 contacts the inner wall of the sleeve 3, the hydraulic oil will pass through the oil drain groove 8 provided on the upper surface of the floating ring 5, thereby generating a force value to relieve the impact of the wheel bouncing downward.
[0018] Working principle: When the plug rod 4 moves upward, it will drive the limit block 6 to move upward, thereby driving the floating ring 5 to move upward. As the floating ring 5 moves upward, the hydraulic oil will flow through a number of oil drain holes formed by the arc-shaped floating ring 7 and the strip-shaped floating rings 9 to the lower end of the sealing cavity 1. During the upward movement of the floating ring 5, an upward pressure will be generated on the hydraulic oil, thereby increasing the pressure in the upper cavity of the sealing cavity 1. As the pressure in the upper cavity of the sealing cavity 1 gradually increases, the flow rate of the hydraulic oil will be accelerated, thereby generating a downward thrust on the strip-shaped floating ring 9, and then causing the strip-shaped floating ring 9 to gradually fit the surface of the piston rod 4 as the floating ring 5 moves upward until the strip-shaped floating ring 9 completely fits the surface of the piston rod 4. At this time, the inner diameter of the arc-shaped floating ring 7 will gradually expand, thereby expanding the outer diameter of the floating ring. When the outer surface of the floating ring 5 contacts the inner wall of the sleeve 3, the hydraulic oil will pass through the oil drain groove 8 provided on the upper surface of the floating ring 5, thereby generating a force value to relieve the impact of the wheel bouncing downward.
[0019] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A novel hydraulic buffer shock absorber, comprising a sealed cavity (1), characterized in that: The upper end of the cavity (1) is connected to a sealing cover (2), and the inner surface of the upper end of the sealing cavity (1) is connected to a sleeve (3), the inner side of the sleeve (3) is connected to a piston rod (4), the outer side of the lower end of the piston rod (4) is connected to a floating ring (5), and the lower end of the floating ring (5) is connected to a limiting block (6).
2. The novel hydraulic buffer shock absorber according to claim 1 is characterized in that: A circular hole is provided in the middle portion of the sealing cover (2), and the circular hole provided in the middle portion of the sealing cover (2) fits with the piston rod (4).
3. The novel hydraulic buffer shock absorber according to claim 2 is characterized in that: The floating ring (5) comprises an arc-shaped floating ring (7), an oil drain groove (8) is provided on the surface of the arc-shaped floating ring (7), and a plurality of strip-shaped floating rings (9) are connected to the inner surface of the arc-shaped floating ring (7).
4. The novel hydraulic buffer shock absorber according to claim 3 is characterized in that: The upper end of the piston rod (4) is located above the sealing cavity (1) by passing through the sleeve (3) and the sealing cover (2).