Shock absorber for truck

Abstract

The shock absorber for the truck comprises a shock absorption cylinder body and a piston rod, the piston rod is sleeved with an inner corrugated pipe and an outer corrugated pipe which move relatively in the axial direction, the outer corrugated pipe and the inner corrugated pipe are coaxially arranged, the inner corrugated pipe and the outer corrugated pipe are both hard metal pipes, and the inner corrugated pipe and the outer corrugated pipe are made of hard metal materials. The maximum outer diameter of the inner corrugated pipe is larger than the minimum inner diameter of the outer corrugated pipe, a first connecting plate connected with the damping cylinder body is arranged at the end, close to the damping cylinder body, of the inner corrugated pipe, the first connecting plate is closed at one end of the inner corrugated pipe, and a second connecting plate connected with a piston rod is arranged at the end, away from the damping cylinder body, of the outer corrugated pipe. The second connecting plate is sealed at one end of the outer corrugated pipe; the pipe wall of the outer corrugated pipe is provided with a plurality of deformation cutting grooves which are arranged in an annular array around the axis. The shock absorber has the advantages of being resistant to stains and easy to clean, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorber manufacturing, and more specifically, to a shock absorber for trucks. Background Art

[0002] The shock absorber configured on the truck works in a bad condition, and the exposed components of the shock absorber are easily stained with stains, which are difficult to clean after solidification, and the overall effect is not good. Based on this, the utility model proposes a shock absorber for a truck. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a shock absorber for a truck, which has the characteristics of being stain-resistant and easy to clean.

[0004] To solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves a shock absorber for trucks, including a shock absorber cylinder and a piston rod, the piston rod is provided with an inner bellows and an outer bellows which are relatively axially movable, the outer bellows is coaxially arranged with the inner bellows, the inner bellows and the outer bellows are both hard metal tubes, the maximum outer diameter of the inner bellows is greater than the minimum inner diameter of the outer bellows, the end of the inner bellows close to the shock absorber cylinder is provided with a first connecting plate connected to the shock absorber cylinder, the first connecting plate is closed at one end of the inner bellows, the end of the outer bellows away from the shock absorber cylinder is provided with a second connecting plate connected to the piston rod, the second connecting plate is closed at one end of the outer bellows.

[0005] The utility model is further configured as follows: a plurality of deformation grooves arranged in a circular array around an axis are opened on the wall of the outer bellows, the deformation grooves extend along the axial direction of the outer bellows, one end of the deformation groove close to the shock absorbing cylinder body is connected to the outside world, and the other end extends backward.

[0006] The utility model is further configured such that: the interval angles between two adjacent deformation grooves are equal.

[0007] The utility model is further configured as follows: the length of the deformation groove is greater than the length of the inner bellows.

[0008] The utility model is further configured as follows: the inner bellows and the outer bellows are both stainless steel tubes.

[0009] In summary, the utility model has the following beneficial effects:

[0010] 1. By arranging inner and outer bellows for blocking stains outside the spring, the inner and outer bellows can move axially relative to each other to ensure the shock absorbing function while blocking external stains.

[0011] 2. Because the maximum outer diameter of the inner bellows is larger than the minimum inner diameter of the outer bellows, the two will vibrate while moving relative to each other axially, shaking off the stains solidified on the outer wall to prevent accumulation and realize automatic cleaning function. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a partial structural schematic diagram of the utility model;

[0014] Figure 3 It is a partial structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0016] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0017] Example 1

[0018] See also Figures 1 to 3 As shown, a shock absorber for trucks involved in this embodiment includes a shock absorber cylinder 1 and a piston rod 2, the piston rod 2 is provided with an inner bellows 3 and an outer bellows 4 which are axially movable relative to each other, the outer bellows 4 is coaxially arranged with the inner bellows 3, the inner bellows 3 and the outer bellows 4 are both hard metal tubes, the maximum outer diameter of the inner bellows 3 is greater than the minimum inner diameter of the outer bellows 4, the end of the inner bellows 3 close to the shock absorber cylinder is provided with a first connecting plate 5 connected to the shock absorber cylinder 1, the first connecting plate 5 is closed at one end of the inner bellows 3, the end of the outer bellows 4 away from the shock absorber cylinder is provided with a second connecting plate 6 connected to the piston rod 2, the second connecting plate 6 is closed at one end of the outer bellows 4.

[0019] Furthermore, the wall of the outer bellows 4 is provided with a plurality of deformation grooves 7 arranged in a circular array around the axis, the deformation grooves 7 extend along the axial direction of the outer bellows 4, one end of the deformation groove 7 close to the shock absorber cylinder is connected to the outside world, and the other end extends in the reverse direction.

[0020] Furthermore, the interval angles between two adjacent deformation grooves 7 are equal.

[0021] Furthermore, the length of the deformation groove 7 is greater than the length of the inner bellows 3 .

[0022] Furthermore, the inner bellows 3 and the outer bellows 4 are both stainless steel tubes.

[0023] In this embodiment, when the piston rod 2 is extended or shortened, the outer bellows 4 moves axially relative to the inner bellows 3, and the outer wall of the inner bellows 3 intermittently touches the inner wall of the outer bellows 4, causing vibration between the two and shaking off the stains solidified on the outer wall.

[0024] Among them, by setting the deformation groove 7, the outer bellows 4 is endowed with good elasticity, obvious deformation, large amplitude and good vibration effect.

[0025] The truck shock absorber involved in the utility model has inner and outer bellows for blocking stains arranged outside the spring, and the inner and outer bellows can move axially relative to each other, so as to ensure that external stains are blocked while performing the shock absorbing function; and because the maximum outer diameter of the inner bellows is greater than the minimum inner diameter of the outer bellows, vibration will occur while the two are moving axially relative to each other, so as to shake off the stains solidified on the outer wall and prevent accumulation, thereby realizing the automatic cleaning function, and the overall function is perfect and the practicability is strong.

[0026] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0027] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A shock absorber for a truck, comprising a shock absorbing cylinder and a piston rod, characterized in that: The piston rod is sleeved with an inner bellows and an outer bellows which can move axially relative to each other. The outer bellows is coaxially arranged with the inner bellows. Both the inner bellows and the outer bellows are hard metal tubes. The maximum outer diameter of the inner bellows is greater than the minimum inner diameter of the outer bellows. The end of the inner bellows close to the shock-absorbing cylinder body is provided with a first connecting plate connected to the shock-absorbing cylinder body, and the first connecting plate is closed at one end of the inner bellows. The end of the outer bellows away from the shock-absorbing cylinder body is provided with a second connecting plate connected to the piston rod, and the second connecting plate is closed at one end of the outer bellows.

2. The shock absorber for trucks according to claim 1, characterized in that: The wall of the outer bellows is provided with a plurality of deformation grooves arranged in a circular array around the axis, the deformation grooves extend along the axial direction of the outer bellows, one end of the deformation groove close to the shock absorbing cylinder is connected to the outside world, and the other end extends backward.

3. The shock absorber for trucks according to claim 2, characterized in that: The interval angles between two adjacent deformation grooves are equal.

4. The shock absorber for trucks according to claim 3, characterized in that: The length of the deformation groove is greater than the length of the inner bellows.

5. The shock absorber for trucks according to any one of claims 1 to 4, characterized in that: The inner bellows and the outer bellows are both stainless steel tubes.

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