Automobile chassis damping inner sleeve

Abstract

The utility model discloses an automobile chassis damping inner sleeve which comprises an outer cylinder, an inner cylinder and a rubber pipe located between the outer cylinder and the inner cylinder, a plurality of annular grooves are formed in the outer surface of the inner cylinder, and annular grooves corresponding to the inner cylinder are formed in the inner wall of the outer cylinder. Annular protrusions matched with the grooves of the inner barrel and the outer barrel are integrally formed on the inner surface and the outer surface of the rubber pipe respectively, preliminary fixation is achieved through clamping of the protrusions and the grooves of the inner barrel and the outer barrel, and the rubber pipe is further fixed to the inner barrel and the outer barrel through a plurality of sets of bolts. The utility model belongs to the technical field of automobile chassis damping, and particularly relates to an automobile chassis damping inner sleeve.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile chassis shock absorption, and particularly relates to an automobile chassis shock absorption inner sleeve. BACKGROUND

[0002] The automobile chassis shock absorption inner sleeve usually refers to rubber bushings or polyurethane bushings in shock absorbers, which are mainly used for connecting shock absorbers and other components of vehicles, such as frames and swing arms. The shock absorption inner sleeve is generally installed at both ends of the shock absorber, and during vehicle driving, it plays a role in buffering the impact force between the shock absorber and other components, reducing vibration transmission, reducing noise, and providing certain elasticity and flexibility.

[0003] The rubber layer in the automobile shock absorber bushing is easily aged and worn due to long-term influence of vibration and impact during vehicle driving and environmental factors, and the performance is degraded. The existing rubber layer is closely connected with the inner and outer cylinders, and is closely connected with the inner and outer cylinders by chemical combination and physical adsorption. It is extremely difficult to disassemble, and forcibly disassembling will not only cause the rubber layer to be broken, but also is likely to damage the inner and outer cylinders, which undoubtedly greatly increases the difficulty and cost of maintenance, prolongs the vehicle maintenance cycle, and brings many inconveniences. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an automobile chassis shock absorption inner sleeve, which effectively solves the problem that the existing bushing rubber layer is not convenient to replace.

[0005] In order to realize the above function, the technical scheme adopted by the utility model is as follows: an automobile chassis shock absorption inner sleeve, comprising an outer cylinder, an inner cylinder and a rubber tube located between the outer cylinder and the inner cylinder, the outer surface of the inner cylinder is provided with a plurality of annular grooves, the inner wall of the outer cylinder is also provided with an annular groove corresponding to the inner cylinder, the inner and outer surfaces of the rubber tube are integrally formed with annular protrusions matched with the grooves of the inner cylinder and the outer cylinder, the initial fixation is realized by the engagement of the protrusions and the grooves of the inner cylinder and the outer cylinder, and the rubber tube and the inner and outer cylinders are further fixed by using a plurality of groups of bolts.

[0006] Preferably, a threaded hole is provided on the outer cylinder wall, a threaded groove corresponding to the threaded hole is embedded on the outer side surface of the inner cylinder, a through hole corresponding to the threaded hole and the threaded groove is provided on the side wall of the rubber tube, and the bolt is screwed into the threaded groove of the inner cylinder through the threaded hole of the outer cylinder and the through hole of the rubber tube.

[0007] Preferably, the diameter of the through hole is greater than the diameter of the bolt.

[0008] Preferably, the inner cylinder and the outer cylinder are respectively provided with a tapered surface at both ends.

[0009] Preferably, the groove depth is 2-3mm, width is 3-4mm, the convex height is 2-3mm, width is 3-4mm.

[0010] Preferably, the outer cylinder is provided with a plurality of dismounting holes in axial direction.

[0011] The utility model discloses adopt above -mentioned structure and obtain beneficial effect as follows: through the cooperation of annular convex of rubber pipe and inner and outer cylinder groove and bolt, when rubber pipe is dismounted, only need to unscrew bolt, can separate, and when installing, can align corresponding thread hole and thread groove, greatly simplify operation process, and remarkablely improve maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an overall structural schematic diagram of the automobile chassis shock-absorbing inner sleeve;

[0013] Figure 2 It is an explosion view of the automobile chassis shock-absorbing inner sleeve;

[0014] Figure 3 It is a sectional view of the automobile chassis shock-absorbing inner sleeve Figure 1 ;

[0015] Figure 4 It is a sectional view of the automobile chassis shock-absorbing inner sleeve Figure 2 ;

[0016] Figure 5 It is a structure state diagram of the outer cylinder of the automobile chassis shock-absorbing inner sleeve.

[0017] Wherein, 1, outer cylinder, 2, inner cylinder, 3, rubber pipe, 4, groove, 5, convex, 6, bolt, 7, thread hole, 8, thread groove, 9, through hole, 10, dismounting hole. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings, and obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0019] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The utility model will be further described in detail below in combination with the drawings.

[0020] As shown in Figures 1-5 The utility model provides a kind of automobile chassis shock-absorbing inner sleeve, including outer tube 1, inner tube 2 and the rubber tube 3 between outer tube 1 and inner tube 2, inner tube 2 outer surface is equipped with multiple annular grooves 4, outer tube 1 inner diameter and inner tube 2 outer diameter keep suitable gap, to ensure that rubber tube 3 can be normally installed, outer tube 1 inner wall is also equipped with the annular groove 4 corresponding with inner tube 2, the depth of groove 4 is 2-3 millimeter, width is 3-4 millimeter, the inner and outer surfaces of rubber tube 3 are integrally formed with annular protrusion 5 matched with inner tube 2, outer tube 1 groove 4, the height of protrusion 5 is 2-3 millimeter, width is 3-4 millimeter, when installing, rubber tube 3, by protrusion 5 and inner tube 2, outer tube 2 groove 4 The engagement realizes preliminary fixation, rubber tube 3 and inner tube 2, outer tube 2 are further fixed using several groups of bolts 6;

[0021] The two ends of inner tube 2 and the two ends of outer tube 1 are respectively provided with a tapered surface, when installing, the annular protrusion 5 of the rubber tube 3 can be more easily slid into the groove 4 of the inner tube and the outer tube along the tapered surface, thereby reducing the installation difficulty and improving the installation efficiency.

[0022] As shown in 3, 4, threaded hole 7 is provided on the wall of outer tube 2, threaded groove 8 corresponding to threaded hole 7 is embedded on the outer side surface of inner tube 1, through hole 9 corresponding to threaded hole 7 and threaded groove 8 is provided on the side wall of rubber tube 3, bolt 6 is screwed into threaded groove 8 of inner tube by passing through threaded hole 7 of outer tube and through hole 9 of rubber tube 3, the diameter of through hole 9 is greater than the diameter of bolt 6, so as to facilitate the smooth passing of bolt 6.

[0023] As shown in Figure 5 A plurality of dismounting holes 10 are arranged on the outer tube 1 in the axial direction, when it is necessary to replace the rubber layer, a special dismounting tool (such as a top rod with a pointed head) is inserted into the dismounting hole 10, the rubber tube 3 is lifted up by external force to separate the rubber tube 3 from the outer tube, so as to facilitate the subsequent overall dismounting.

[0024] The inner cylinder 2 and the outer cylinder 1 are made of 40Cr alloy steel, high strength and good toughness, the rubber tube 3 is made of hydrogenated nitrile rubber, has excellent aging resistance, wear resistance, oil resistance and high and low temperature resistance, can maintain stable elasticity and buffering performance under different environmental conditions, effectively prolongs the service life of the bushing, and the bolt 6 is made of 316L stainless steel, has good corrosion resistance, and ensures that the fixing bolt 6 can be normally disassembled and installed in a long-term use process.

[0025] In specific use, in assembly, the annular protrusion 5 of the rubber tube 3 is aligned with the groove 4 of the inner cylinder, the rubber tube 3 is slowly sleeved into the inner cylinder 2 by means of the installation taper surface, then the outer cylinder 1 is sleeved on the rubber tube 3, the groove 4 of the outer cylinder 1 is aligned with the protrusion 5 of the rubber tube 3 by means of the taper surface, finally, the bolt 6 is aligned with the threaded hole 7 and connected through the through hole 9 and the threaded groove 8 of the inner cylinder 2, so that the bushing assembly is firm.

[0026] In normal work, the vibration and impact force generated by vehicle driving are transmitted to the bushing through the suspension system, the rubber tube 3 absorbs and buffers the vibration energy by means of the elastic deformation of the rubber tube 3, and at the same time, the rubber tube 3 is kept in close connection with the inner and outer cylinders through the clamping of the annular protrusion 5 and the groove 4 and the fastening effect of the bolt 6, so that the force is effectively transmitted and the stability of the overall structure of the bushing is ensured.

[0027] When the rubber tube 3 needs to be replaced, the bolt 6 is unscrewed, then the rubber tube 3 is lifted by means of the dismounting tool through the dismounting hole 10 on the outer cylinder 1, the connection between the rubber tube 3 and the outer cylinder 1 is damaged, then the rubber tube 3 is axially pulled out from the inner cylinder 2, the dismounting is completed, and a new rubber tube 3 can be installed.

[0028] The above describes the utility model and its implementation mode, which is not limited, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. An automotive chassis shock absorber inner sleeve characterized by: The utility model relates to a rubber tube fixing device, which comprises an outer cylinder (1), an inner cylinder (2) and a rubber tube (3) between the outer cylinder (1) and the inner cylinder (2), the outer surface of the inner cylinder (2) is provided with a plurality of annular grooves (4), the inner wall of the outer cylinder (1) is also provided with annular grooves (4) corresponding to the inner cylinder (2), the inner and outer surfaces of the rubber tube (3) are integrally formed with annular protrusions (5) matched with the grooves (4) of the inner cylinder (2) and the outer cylinder (1) respectively, the rubber tube (3) is preliminarily fixed through the engagement of the protrusions (5) with the grooves (4) of the inner cylinder (2) and the outer cylinder (1), and the rubber tube (3) is further fixed with the inner cylinder (2) and the outer cylinder (1) by using a plurality of groups of bolts (6).

2. The automotive chassis shock absorber inner sleeve of claim 1, wherein: Threaded holes (7) are formed in the wall of the outer cylinder (1), the outer side of the inner cylinder (2) is embedded with threaded grooves (8) corresponding to the threaded holes (7), the side wall of the rubber tube (3) is formed with through holes (9) corresponding to the threaded holes (7) and the threaded grooves (8), and the bolts (6) are screwed into the threaded grooves (8) of the inner cylinder (2) through the threaded holes (7) of the outer cylinder (1) and the through holes (9) of the rubber tube (3).

3. The automotive chassis shock absorber inner sleeve of claim 2, wherein: The diameter of the through holes (9) is greater than the diameter of the bolts (6).

4. A shock absorber inner sleeve for a vehicle suspension according to any one of claims 1 to 3, characterized in that: The inner cylinder (2) and the outer cylinder (1) are respectively provided with tapered surfaces at both ends.

5. The automotive chassis shock absorber inner sleeve of claim 4, wherein: The depth of the grooves (4) is 2-3 mm, the width is 3-4 mm, the height of the protrusions (5) is 2-3 mm, and the width is 3-4 mm.

6. The inner sleeve of a vehicle chassis shock absorber of any one of claims 1, 2, 3, 5, wherein: A plurality of dismounting holes (10) are arranged on the outer cylinder (1) in the axial direction.

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