Damping-adjustable air bag shock absorber assembly for adjustment

Abstract

The utility model relates to the field of shock absorbers, and discloses a damping-adjustable air bag shock absorber assembly for adjustment, which comprises a shock absorber component, an air bag sub-assembly and a hanging ring fixedly connected with the shock absorber component, the shock absorber component comprises a connecting rod, a working cylinder and a liquid storage barrel which are sequentially arranged from inside to outside and coaxially connected, the head portion of the connecting rod is located outside the liquid storage barrel, the body portion of the connecting rod extends into the working cylinder, the sealing portion of the liquid storage barrel is detachably connected, the air bag sub-assembly is arranged in the circumferential direction of the liquid storage barrel in a sleeved mode, and the inner side faces of the head end and the tail end of the air bag sub-assembly are connected with the connecting rod and the liquid storage barrel in a matched mode. The utility model has the beneficial effects of compact structure, convenience and quickness in disassembly, reusability, cost reduction, good sealing performance and capability of debugging damping.

Description

Technical Field

[0001] The utility model relates to the field of shock absorbers, in particular to an air bag shock absorber assembly with adjustable damping for adjustment. Background Art

[0002] Shock absorbers, as a crucial vehicle component, primarily absorb and filter vibrations transmitted from the vehicle frame, converting the mechanical energy of vehicle vibration into heat, thereby attenuating vibrations and maintaining a smooth ride. This ensures effective wheel contact and safe driving. The damping force of the shock absorber must be adjusted to suit the vehicle's suspension. The damping force is related to the vehicle's relative damping coefficient, which in turn is related to the vehicle's sprung mass and suspension spring rate. Just because a shock absorber performs well on vehicle A doesn't guarantee the same performance on vehicle B. Therefore, the shock absorber must be disassembled and its internal components adjusted to optimize performance.

[0003] After the damping adjustment of the traditional airbag shock absorber assembly, the sealing part of the liquid storage cylinder is sealed by roller pressing, such as Figure 4 As shown, the shock absorber cannot be disassembled. When the damping adjustment is not matched after installation, a new adjusted shock absorber needs to be remade, which is costly and inefficient. In addition, the liquid storage cylinder structure of the traditional shock absorber is as follows Figure 5 As shown, the liquid storage cylinder is composed of two sections of cylinders that are sleeved and welded together. There is a step at the welding position, which will cause the airbag sub-assembly to be unable to be inserted into the liquid storage cylinder from the head direction of the connecting rod, thereby making it impossible to assemble the airbag sub-assembly. Utility Model Content

[0004] In order to overcome the problems in the above-mentioned background technology that the shock absorber adopts roller sealing, the shock absorber assembly cannot be disassembled and the damping of the original shock absorber assembly cannot be adjusted, and the liquid storage cylinder is composed of two sections of cylinders and welded together, and there is a step at the welding position and it cannot be inserted into the airbag sub-assembly, the utility model provides an airbag shock absorber assembly with adjustable damping for adjustment. By adopting a detachable connection method at the sealing part of the liquid storage cylinder, it is convenient to disassemble the shock absorber assembly and adjust the internal components of the shock absorber, adjust the damping, and the integrated structure of the liquid storage cylinder can be smoothly inserted into the airbag sub-assembly, which has the beneficial effects of compact structure, convenient and quick disassembly, reusability, cost reduction, good sealing performance, and the ability to adjust damping.

[0005] The technical solution of the utility model is as follows:

[0006] A damping-adjustable airbag shock absorber assembly for adjustment includes a shock absorber assembly, an airbag subassembly, and a lifting ring fixedly connected to the shock absorber assembly. The shock absorber assembly includes a connecting rod, a working cylinder, and a liquid storage cylinder arranged in sequence from the inside to the outside and coaxially connected. The head of the connecting rod is located outside the liquid storage cylinder and the body extends into the working cylinder. The sealing portion of the liquid storage cylinder is connected in a detachable manner. The airbag subassembly is sleeved on the circumference of the liquid storage cylinder, and the inner side surfaces of the airbag subassembly at its head and tail ends are respectively connected to the connecting rod and the liquid storage cylinder.

[0007] Preferably, the sealing portion of the liquid storage cylinder is connected with a sealing nut, the outer annular surface of the sealing nut is threadedly connected to the liquid storage cylinder, and the inner annular surface is clearance-matched with the body of the connecting rod.

[0008] Further preferably, a guide seat is arranged between the inner end surface of the sealing nut and the outer port of the working cylinder. The guide seat is sleeved on the connecting rod, and its inner and outer annular surfaces are respectively matched with the rod body of the connecting rod and the inner wall of the liquid storage cylinder.

[0009] Further preferably, the inner end surface of the guide seat is connected to the outer port of the working cylinder, and the inner port of the working cylinder is connected to the inner bottom of the liquid storage barrel through the bottom valve seat.

[0010] Further preferably, a frustum is sleeved on one side of the guide seat close to the sealing nut, and the outer annular surface of the frustum is in contact with the inner wall of the liquid storage cylinder.

[0011] Further preferably, an oil seal sleeved on the connecting rod is provided between the frustum and the sealing nut. Under the squeezing action of the sealing nut and the frustum, the oil seal has an interference fit with the inner wall of the liquid storage cylinder and the connecting rod to achieve radial sealing.

[0012] Further preferably, the oil seal is a rubber outer ring oil seal.

[0013] Preferably, the liquid storage cylinder is a precision drawing tube with an integrated structure, and the outer surface of the precision drawing tube is smooth.

[0014] Preferably, the connecting sleeve on one side of the lifting ring is fixed on the head of the connecting rod, and one side of the airbag sub-assembly is in contact with the connecting sleeve.

[0015] Further preferably, the head and tail ends of the airbag sub-assembly are interference fit with the connecting rod and the liquid storage cylinder through O-rings respectively.

[0016] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0017] (1) The shock absorber is detachable by threaded connection between the sealing nut and the liquid storage cylinder. After rotating and removing the sealing nut, the connecting rod, working cylinder and other components inside the liquid storage cylinder can be disassembled and taken out one by one, and the internal part of the shock absorber component can be matched and adjusted, so that the magnitude of the shock absorber damping force can be adjusted according to the feedback data during the matching and adjustment of the whole vehicle, thereby determining the optimal damping parameters suitable for the vehicle suspension through rapid on-site debugging and matching damping, and obtaining better performance after adjustment. This avoids the problem that the sealing part of the shock absorber in the background technology is sealed by roller, the shock absorber cannot be disassembled, and cannot be disassembled and adjusted, and the sample needs to be remade for installation and adjustment, resulting in cost waste and low efficiency. The shock absorber assembly structure of the present invention is convenient and quick to disassemble and can be reused, thereby reducing costs and improving efficiency.

[0018] (2) By arranging the airbag subassembly around the circumference of the liquid reservoir and cooperating with the connecting rod and the liquid reservoir, the airbag subassembly can maintain a stable connection with the liquid reservoir, and the airbag subassembly can be used to support the weight of the vehicle body and assist the shock absorber in absorbing and attenuating the vibration of the vehicle body, making the ride more comfortable;

[0019] (3) The integrated structure of the liquid storage cylinder allows the airbag subassembly to be smoothly inserted into the liquid storage cylinder body from the head direction of the connecting rod, thereby realizing normal assembly of the airbag subassembly and the shock absorber, avoiding the problem in the background technology that the liquid storage cylinder of the traditional shock absorber is two sections of cylinder barrels that are sleeved and welded together, and there is a step at the welding position, which makes it impossible to insert the airbag subassembly.

[0020] (4) Through the axial squeezing of the cone at the upper end of the guide seat and the oil seal (the axial tightening force is formed by the screwing of the sealing nut and the liquid storage cylinder), the oil seal expands radially and squeezes and fits with the inner wall of the liquid storage cylinder and the connecting rod to form an interference fit, thereby achieving radial sealing in the liquid storage cylinder and ensuring the normal operation of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 This is a schematic structural diagram of the airbag sub-assembly of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the sealing portion of the liquid storage cylinder in the background technology using roller pressing;

[0026] Figure 5 It is a structural schematic diagram of a liquid storage cylinder formed by welding two sections of cylinder barrels in the background technology.

[0027] Reference numerals: shock absorber assembly 1, working cylinder 11, liquid reservoir 12, sealing portion 121, connecting rod 13, sealing nut 14, guide seat 15, frustum 151, oil seal 16, airbag sub-assembly 2, O-ring 21, lifting ring 3, connecting sleeve 31, cylinder 4. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example 1: Figures 1 to 3 The illustrated embodiment of a damping-adjustable airbag shock absorber assembly for adjustment includes a shock absorber assembly 1, an airbag subassembly 2, and a lifting ring 3 fixedly connected to one end of the shock absorber assembly 1. The lifting ring 3 is used to connect the shock absorber assembly 1 to the vehicle body. The shock absorber assembly 1 includes a working cylinder 11, a fluid reservoir 12, and a connecting rod 13. The working cylinder 11 extends into the fluid reservoir 12 and maintains a stable connection therewith. The body of the connecting rod 13 extends into the working cylinder 11, while the head is located outside the fluid reservoir 12. The connecting rod 13, the working cylinder 11, and the fluid reservoir 12 are coaxially connected. The connecting rod 13 can move back and forth along its length within the working cylinder 11 under the action of an external force. The sealing portion 121 of the fluid reservoir 12 is detachably connected to other components. The airbag subassembly 2 is sleeved around the fluid reservoir 12, with its inner side surfaces at both ends matingly connected to the body of the connecting rod 13 and the body of the fluid reservoir 12, respectively. In addition, the liquid storage cylinder 12 uses a precision-drawn tube with an integrated structure, and the outer surface of the precision-drawn tube is ground to ensure its roundness and surface smoothness.

[0030] By adopting a detachable connection at the sealing portion 121 of the liquid storage cylinder 12, the shock absorber can be detachable. After disassembly, the internal part of the shock absorber assembly 1 can be matched and adjusted, so that the magnitude of the shock absorber damping force can be adjusted according to the feedback data during the matching and adjustment of the whole vehicle, thereby determining the optimal damping parameters adapted to the vehicle suspension through rapid on-site debugging and matching damping, and obtaining better performance after adjustment. This avoids the problem that the sealing portion 121 of the shock absorber in the background art is closed by roller pressing, the shock absorber cannot be disassembled and adjusted, and the sample needs to be remade for installation and adjustment, resulting in cost waste and low efficiency. By separating the airbag subassembly 2 It is sleeved on the circumference of the liquid reservoir 12 and is connected with the connecting rod 13 and the liquid reservoir 12, so that the airbag subassembly 2 can maintain a stable connection with the liquid reservoir 12, and the airbag subassembly 2 can be used to support the weight of the vehicle body and assist the shock absorber in absorbing and attenuating the vibration of the vehicle body, making the ride more comfortable; the liquid reservoir 12 adopts an integrated structure so that the airbag subassembly 2 can be smoothly inserted into the body of the liquid reservoir 12 from the head direction of the connecting rod 13, thereby realizing the normal assembly of the airbag subassembly 2 and the shock absorber, avoiding the problem in the background technology that the liquid reservoir 12 of the traditional shock absorber is two sections of cylinder 4 sleeved and welded together, and there is a step at the welding position, which makes the airbag subassembly 2 unable to be inserted.

[0031] Example 2: Based on Example 1, the connection method of the sealing part 121 of the liquid storage cylinder 12 is optimally designed. The sealing part 121 of the liquid storage cylinder 12 is connected with a sealing nut 14. The outer ring surface of the sealing nut 14 is threadedly connected to the liquid storage cylinder 12, and the inner ring surface is clearance-matched with the body of the connecting rod 13. The shock absorber is detachable through the threaded connection between the sealing nut 14 and the liquid storage cylinder 12. After rotating and removing the sealing nut 14, the connecting rod 13, working cylinder 11 and other components inside the liquid storage cylinder 12 can be taken out one by one and adjusted, thereby achieving matching adjustment of the damping parameters of the shock absorber assembly 1, so that it can obtain better performance after adjustment.

[0032] Furthermore, a guide seat 15 is arranged between the inner end face of the sealing nut 14 and the outer end face of the working cylinder 11. The guide seat 15 is sleeved on the connecting rod 13 and is in clearance with the rod body of the connecting rod 13. The outer annular surface of the guide seat 15 is also in clearance with the inner wall of the liquid storage cylinder 12. The setting of the guide seat 15 can play a supporting and guiding role when the connecting rod 13 moves back and forth linearly. The inner end face of the guide seat 15 extends from the outer end face of the working cylinder 11 and is clamped on the outer end face of the working cylinder 11. The inner end face of the working cylinder 11 is stably connected to the inner bottom of the liquid storage cylinder 12 through the bottom valve seat. The structure of the bottom valve seat and its connection method are existing technologies and will not be described in detail here. Therefore, the working cylinder 11 can maintain a coaxial and stable connection with the liquid storage cylinder 12 by adopting the above-mentioned connection method at both ends, and the internal components of the shock absorber can be kept in an orderly and stable connection.

[0033] Furthermore, a frustum 151 is sleeved onto the side of the guide seat 15 near the sealing nut 14. Specifically, the frustum 151 is sleeved circumferentially onto the outer upper surface of the guide seat 15. The outer annular surface of the frustum 151 contacts the inner wall of the liquid reservoir 12. The outer upper surface of the guide seat 15 is recessed inward to form an annular groove. This groove and the inner wall of the liquid reservoir 12 form an annular cavity, which is filled by the frustum 151. By providing the frustum 151, with its inner and outer annular surfaces contacting the inner walls of the guide seat 15 and the liquid reservoir 12, respectively, the connection stability between the guide seat 15 and the other shock absorber components 1 within the liquid reservoir 12 can be further improved.

[0034] Furthermore, an oil seal 16 is disposed between the cone 151 and the inner end surface of the sealing nut 14. This seal is sleeved onto the connecting rod 13 and, under the compressive action of the sealing nut 14 and cone 151, creates an interference fit with the inner wall of the reservoir 12 and the connecting rod 13. Axial compression between the cone 151 at the upper end of the guide seat 15 and the oil seal 16 (the axial tightening force generated by the screwing of the sealing nut 14 and the reservoir 12) causes the oil seal 16 to expand radially, compressing and engaging the inner wall of the reservoir 12 and the connecting rod 13 to form an interference fit. This achieves a radial seal within the reservoir 12 and ensures proper operation of the shock absorber. The oil seal 16 is constructed of a rubber outer ring, made of materials such as styrene-butadiene rubber (SBR) and fluororubber. This seal is resistant to corrosion from various oils, solvents, and strong acid and alkali environments, offering excellent oil resistance and sealing performance.

[0035] Example 3: An optimal design is made based on Example 1, in which a connecting sleeve 31 is fixed to one side of the lifting ring 3, and the head of the connecting rod 13 extends out of the liquid storage cylinder 12 and the airbag sub-assembly 2 in sequence, and is fixed in the connecting sleeve 31, wherein the side of the airbag sub-assembly 2 close to the head of the connecting rod 13 abuts against the side of the connecting sleeve 31. By providing the connecting sleeve 31 fixed to the lifting ring 3, it is convenient to fix the lifting ring 3 and the shock absorber assembly 1 to ensure the normal operation of the shock absorber.

[0036] Furthermore, the head and tail ends of the airbag subassembly 2 are interference fit with the connecting rod 13 and the liquid storage cylinder 12 through O-rings 21 respectively. This connection method is beneficial to the connection stability of the airbag subassembly 2 and the shock absorber assembly 1 and maintaining airtight performance.

[0037] The above embodiments merely represent specific implementation methods of the present application. Although the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the technical concept of the present application, and these modifications and improvements are all within the scope of protection of the present application.

Claims

1. A damping-adjustable airbag shock absorber assembly for adjustment, comprising a shock absorber assembly (1), an airbag subassembly (2), and a lifting ring (3) fixedly connected to the shock absorber assembly (1), wherein the shock absorber assembly (1) comprises a connecting rod (13), a working cylinder (11), and a liquid storage cylinder (12) arranged in sequence from the inside to the outside and coaxially connected, characterized in that: The head of the connecting rod (13) is located outside the liquid storage cylinder (12) and the body thereof extends into the working cylinder (11). The sealing portion (121) of the liquid storage cylinder (12) is connected in a detachable manner. The airbag subassembly (2) is sleeved around the liquid storage cylinder (12), and the inner side surfaces of the head and tail ends thereof are respectively connected to the connecting rod (13) and the liquid storage cylinder (12).

2. The damping adjustable airbag shock absorber assembly for adjustment according to claim 1, characterized in that: The sealing portion (121) of the liquid storage cylinder (12) is connected to a sealing nut (14), the outer ring surface of the sealing nut (14) is threadedly connected to the liquid storage cylinder (12), and the inner ring surface is clearance-matched with the body of the connecting rod (13).

3. The damping adjustable airbag shock absorber assembly for adjustment according to claim 2, characterized in that: A guide seat (15) is arranged between the inner end surface of the sealing nut (14) and the outer end of the working cylinder (11). The guide seat (15) is sleeved on the connecting rod (13), and its inner and outer annular surfaces are respectively matched with the rod body of the connecting rod (13) and the inner wall of the liquid storage cylinder (12).

4. The damping-adjustable airbag shock absorber assembly for adjustment according to claim 3, characterized in that: The inner end surface of the guide seat (15) is connected to the outer port of the working cylinder (11), and the inner port of the working cylinder (11) is connected to the inner bottom of the liquid storage cylinder (12) through the bottom valve seat.

5. The damping-adjustable airbag shock absorber assembly for adjustment according to claim 4, characterized in that: A frustum (151) is sleeved on one side of the guide seat (15) close to the sealing nut (14), and the outer ring surface of the frustum (151) is connected to the inner wall of the liquid storage cylinder (12).

6. The damping-adjustable airbag shock absorber assembly for adjustment according to claim 5, characterized in that: An oil seal (16) sleeved on the connecting rod (13) is further provided between the frustum (151) and the sealing nut (14). Under the squeezing action of the sealing nut (14) and the frustum (151), the oil seal (16) is interference-fitted with the inner wall of the liquid storage cylinder (12) and the connecting rod (13) to achieve radial sealing.

7. The damping adjustable airbag shock absorber assembly for adjustment according to claim 6, characterized in that: The oil seal (16) is a rubber outer ring oil seal.

8. The damping-adjustable airbag shock absorber assembly for adjustment according to claim 1, characterized in that: The liquid storage cylinder (12) is a precision drawing tube with an integrated structure, and the outer surface of the precision drawing tube is smooth.

9. The damping adjustable airbag shock absorber assembly for adjustment according to claim 1, characterized in that: A connecting sleeve (31) on one side of the lifting ring (3) is sleeved and fixed on the head of the connecting rod (13), and one side of the airbag subassembly (2) is in contact with the connecting sleeve (31).

10. The airbag shock absorber assembly with adjustable damping for adjustment according to claim 1 or claim 9, characterized in that: The head and tail ends of the airbag subassembly (2) are respectively interference-fitted with the connecting rod (13) and the liquid storage cylinder (12) through O-type sealing rings (21).

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