Wire harness fixing device of air spring

Abstract

The utility model provides a wire harness fixing device of an air spring, which comprises a clamping groove structure arranged at the opening edge position of an air spring shell part, an elastic plug is elastically inserted in the clamping groove structure, a wire hole is arranged on the elastic plug, the wire hole penetrates through the peripheral walls of the two sides of the elastic plug, and the inner edge outline of the wire hole is matched with the outer outline of a wire harness in the air spring. A clamping groove structure is arranged on the opening edge of the air spring shell piece, an elastic plug is arranged to be matched with the clamping groove structure, and the elastic plug structure is in close fit with a clamping groove through the elasticity of the plug structure, so that good sealing and fixing are guaranteed, and a through wire hole is formed in the elastic plug, so that the wire harness in the air spring is led out to the outside. The inner diameter of the wire hole is matched with the wire harness needing to be led out, so that close fit between the wire harness and the elastic plug is guaranteed, displacement of the wiring position and possible water inflow are effectively avoided, and the wire harness is effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, in particular to a wire harness fixing device of air spring. BACKGROUND

[0002] Air spring is filled with compressed air in a sealed container, and its elasticity is realized by using the compressibility of gas. Air spring has ideal nonlinear elastic characteristics. After installing height adjusting device, the height of vehicle body does not change with load increase and decrease, the spring stiffness can be designed to be low, and the ride comfort is good. The air spring suspension structure for the current automobile is complex and has high manufacturing cost.

[0003] The internal wire harness of the existing air spring needs to be led out through the shell of the air spring during the assembly process. The wire harness is mainly the wiring of the internal electromagnetic switching valve. The commonly used wiring design is to directly reserve an opening or similar structure on the air spring shell, and the internal wire harness is directly led out through the opening. It is found in actual use that although the wiring design has the advantages of simple structure and low implementation cost, the wiring structure is easy to cause friction with the wire harness, which damages the wire harness, and the wiring position is not sealed, which is easy to cause water to enter and cause short circuit of internal electrical elements.

[0004] In summary, the wiring design of the existing air spring has the technical problems of damaging the wire harness and being easy to enter water and damage the circuit. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems that the wiring design of the existing air spring is easy to damage the wire harness and is easy to enter water and damage the circuit.

[0006] To solve the above problems, the utility model provides a wire harness fixing device of air spring, which comprises a clamping groove structure arranged at the edge of the air spring shell, a elastic plug is elastically inserted into the clamping groove structure, a wire hole is arranged on the elastic plug, the wire hole penetrates through the two side walls of the elastic plug, and the inner edge contour of the wire hole is matched with the outer contour of the wire harness in the air spring, so as to lead the wire harness in the air spring to the outside,

[0007] The utility model provides a wire harness fixing device with elasticity, a clamping groove structure is arranged at the edge of the air spring shell, an elastic plug is arranged in the clamping groove structure, a tight fit is formed between the elasticity of the plug structure and the clamping groove, so as to ensure good sealing and fixing, a wire hole is arranged on the elastic plug, the inner diameter of the wire hole is matched with the wire harness to be led out, so as to ensure the tight fit between the wire harness and the elastic plug, the displacement of the wiring position and the possible water entering are effectively avoided, and the wire harness is effectively protected, so that the technical problems that the wiring design of the existing air spring is easy to damage the wire harness and is easy to enter water and damage the circuit are solved.

[0008] As a preferred scheme, the two side inner walls of the clamping groove structure are provided with protruding positioning tooth structures, and the two side end faces of the elastic plug are provided with positioning grooves for matching with the positioning tooth structures. This design further optimizes the mutual positioning between the clamping groove structure and the elastic plug. The grooves are arranged on the opposite side end faces of the elastic plug, and the positioning tooth structures are arranged on the two side end faces of the clamping groove structure corresponding to the groove shape. The elastic plug is positioned through the concave-convex matching structure, thereby ensuring the positioning of the elastic plug in the clamping groove structure.

[0009] As a preferred scheme, the end of the elastic plug on the side facing the bottom of the clamping groove structure has a tapered structure gradually tapering to a pointed end, and the two side inner edge faces of the clamping groove structure are provided with inclined guide faces abutting against the tapered structure. The wire hole is located on the side of the elastic plug adjacent to the bottom of the clamping groove structure. This design further optimizes the elastic plug. The side of the elastic plug facing the end of the clamping groove structure is provided with a tapered structure, and the outer diameter gradually decreases in the direction towards the end of the clamping groove structure. The clamping groove structure is provided with an inclined surface structure on the side of the bottom to ensure the concave-convex matching between the elastic plug and the clamping groove structure. This design makes the plug-in and plug-out operation of the elastic plug easy to perform.

[0010] As a preferred scheme, the end face of the elastic plug on the side facing the bottom of the clamping groove structure is provided with a slot communicating with the wire hole, and the slot is located in the central axis region of the side end face of the plug structure. This design optimizes the structure design near the position of the wire hole in the elastic plug. The wire hole is directly arranged in an open structure on one side. Through this structure, the tapered structure at the end of the elastic plug is matched to allow the elastic plug to deform from both sides to the middle when the elastic plug is pressed into the clamping groove. The elastic plug can compress the wire hole inward, thereby further optimizing the sealing of the wire hole position.

[0011] As a preferred scheme, the end face of the elastic plug on the side with the slot has an inclined surface structure recessed from both sides to the middle, and the recessed inclination angle is in the range of 15°-30°. The bottom of the clamping groove structure is flat. This design further optimizes the end face structure of the plug structure by setting a slot on the side of the wire hole in the above design. When the elastic plug is pressed inward from both sides to deform when the elastic plug is inserted into the clamping groove, the bottom end face of the elastic plug is recessed due to the structure of the slot. The middle part of the side end face is gradually convex outward, so that the recessed surface with an inclination is restored to a flat surface to optimize the surface sealing between the elastic plug and the bottom end face of the clamping groove structure. The optimal recessed inclination angle is 20°.

[0012] As a preferred scheme, the positioning tooth structure is provided with a bevel-shaped guide structure at the side edge of the top opening of the clamping groove structure, which is used for guiding the assembly process of the elastic plug. The design optimizes the installation of the elastic plug. The top edge of the positioning tooth structure, i.e., the edge of the side of the top opening of the clamping groove structure, is provided with a bevel-shaped guide structure, thereby increasing the spacing between the left and right positioning tooth structures and guiding the installation of the elastic plug into the clamping groove, so that the installation operation is easier to perform.

[0013] As a preferred scheme, the elastic plug is formed by vulcanization of ethylene propylene diene rubber. The design optimizes the material selection and forming design of the elastic plug. The ethylene propylene diene rubber is vulcanized to fully meet the strength, elasticity, and durability of the sealing and positioning.

[0014] As a preferred scheme, the top of the air spring shell member is further press-fitted with a ring-shaped top plate, and the ring-shaped top plate abuts against the upper end surface of the elastic plug. The design further provides a structure for positioning the elastic plug in the clamping groove structure on the structure of the elastic plug. The abutment between the ring-shaped top plate and the outer end surface of the elastic plug achieves the positioning of the elastic plug, thereby preventing the elastic plug from being pulled out after being installed in the clamping groove. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of the wire harness fixing device of the air spring is provided.

[0016] Figure 2 For Figure 1 A partial structure schematic view of the wire harness fixing device of the air spring is provided.

[0017] Figure 3 For Figure 1 A structure schematic view of the clamping groove structure of the wire harness fixing device of the air spring is provided.

[0018] Figure 4 For Figure 1 A structure schematic view of the elastic plug of the wire harness fixing device of the air spring is provided.

[0019] Among them, Figures 1-4 The air spring shell member is hollow.

[0020] 1, elastic plug; 1-1, wire hole; 1-2, positioning groove; 1-3, slot; 2, air spring shell member; 2-1, clamping groove structure; 2-2, positioning tooth structure; 2-3, bevel face; 2-4, bevel-shaped guide structure; 3, wire harness; 4, ring-shaped top plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] Before providing a detailed explanation of the working principle of this utility model, further clarification is needed regarding its description: In this description, terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] refer to Figures 1-4 The following examples illustrate this. Figure 1 A schematic diagram of a wire harness fixing device for an air spring provided by this utility model; Figure 2 for Figure 1 A partial structural diagram of the wiring harness fixing device for an air spring; Figure 3 for Figure 1 A schematic diagram of the slot structure of the wire harness fixing device for an air spring; Figure 4 for Figure 1 A schematic diagram of the elastic plug of the wiring harness fixing device for air springs.

[0025] The wiring harness fixing device for an air spring provided in this embodiment includes a slot structure 2-1 disposed at the edge of the air spring housing 2. An elastic plug 1 is elastically inserted into the slot structure 2-1. The elastic plug 1 is provided with a wire hole 1-1, which penetrates both peripheral walls of the elastic plug 1. The inner contour of the wire hole 1-1 matches the outer contour of the inner wiring harness 3 of the air spring, so as to guide the inner wiring harness 3 of the air spring to the outside.

[0026] This utility model provides a flexible wire harness fixing device with a slot structure 2-1 at the edge of the air spring housing 2. An elastic plug 1 is provided to fit the slot structure 2-1. The elasticity of the plug structure itself forms a tight fit with the slot, thereby ensuring good sealing and fixing. A through wire hole 1-1 is provided on the elastic plug 1. The inner diameter of the wire hole 1-1 matches the wire harness that needs to be routed, thereby ensuring a tight fit between the wire harness and the elastic plug 1. This effectively avoids displacement of the wiring position and possible water ingress, thus effectively protecting the wire harness and solving the technical problem that the wiring design of existing air springs is prone to damage to the wire harness and water ingress that can damage the circuit.

[0027] In the technical solution provided in this embodiment, both inner walls of the slot structure 2-1 are provided with protruding positioning tooth structures 2-2, and both end faces of the elastic plug 1 are provided with positioning grooves 1-2 for positioning in a concave-convex fit with the positioning tooth structures 2-2. This design further optimizes the mutual positioning between the slot structure 2-1 and the elastic plug 1. Grooves are provided on the opposite end faces of the elastic plug 1, and positioning tooth structures 2-2 are provided on the end faces of the slot structure 2-1 corresponding to the shape of the grooves. Through this concave-convex fit, the elastic plug 1 is positioned, ensuring that the elastic plug 1 is positioned within the slot structure 2-1.

[0028] In the technical solution provided in this embodiment, the elastic plug 1 has a tapered structure that tapers towards the tip at the end facing the bottom of the slot structure 2-1. The inner edges of both sides of the slot structure 2-1 are provided with inclined guide surfaces 2-3 that abut and limit the tapered structure. The wire hole 1-1 is located inside the elastic plug 1 on the side adjacent to the bottom of the slot structure 2-1. This design further optimizes the elastic plug 1, providing a tapered structure at its end facing the bottom of the slot structure 2-1. The outer diameter decreases along the direction towards the end of the slot structure 2-1 to accommodate this tapered structure. An inclined surface structure is provided on the bottom side of the slot structure 2-1 to ensure a proper fit between the elastic plug 1 and the slot structure 2-1. This design facilitates the insertion and removal of the elastic plug 1.

[0029] In the technical solution provided in this embodiment, the elastic plug 1 has a slot 1-3 on its end face facing the bottom of the slot structure 2-1, which communicates with the wire hole 1-1. The slot 1-3 is located in the central axis area of ​​the end face of the plug structure on this side. This design optimizes the structural design near the wire hole 1-1 inside the elastic plug 1. The wire hole 1-1 adopts a structure that is open on one side. With this structure and the conical structure at the end of the elastic plug 1, when the elastic plug 1 is inserted into the slot and subjected to pressure, the elastic plug 1 deforms from both sides towards the middle, allowing the elastic plug 1 to compress the wire hole 1-1 inward, further optimizing the sealing at the position of the wire hole 1-1.

[0030] In the technical solution provided in this embodiment, the end face of the elastic plug 1 with the slot 1-3 has a sloping structure that is concave from both sides to the middle, and the inclination angle of the concavity is in the range of 15°-30°. The bottom of the slot structure 2-1 is flat. This design further optimizes the end face structure of the plug by setting the slot 1-3 on one side of the wire hole 1-1 in the above design. When the elastic plug 1 is inserted into the slot and deformed by pressure from both sides, the bottom end face of the elastic plug 1 gradually convexes outward in the middle of the end face due to the structure of the slot 1-3, so that the sloping concave surface returns to a flat surface, thereby optimizing the surface fit and seal between the elastic plug 1 and the bottom end face of the slot structure 2-1. Based on this, the optimal solution for the concavity inclination angle is 20°.

[0031] In the technical solution provided in this embodiment, the positioning tooth structure 2-2 has a beveled guide structure 2-4 on one edge of the top opening of the slot structure 2-1, which guides the assembly process of the elastic plug 1. This design optimizes the insertion of the elastic plug 1. The beveled guide structure 2-4 on the top edge of the positioning tooth structure 2-2, i.e., the edge of the top opening of the slot structure 2-1, increases the distance between the two positioning tooth structures 2-2, which can guide the process of inserting the elastic plug 1 into the slot, making the insertion action easier.

[0032] In the technical solution provided in this embodiment, the elastic plug 1 is vulcanized from EPDM rubber. This design optimizes the material selection and molding design of the elastic plug 1, using EPDM rubber vulcanization to fully meet the requirements of sealing and positioning strength, elasticity, and durability.

[0033] In the technical solution provided in this embodiment, an annular top plate 4 is also press-fitted and fixed to the top of the air spring housing 2, and the annular top plate 4 abuts against the upper end face of the elastic plug 1. This design further provides a structure for positioning the elastic plug 1 within the slot structure 2-1. The positioning of the elastic plug 1 is achieved by the abutment between the annular top plate 4 and the outer end face of the elastic plug 1, preventing it from falling out after being inserted into the slot.

[0034] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A wire harness fixing device for an air spring, characterized in that, The device includes a slot structure (2-1) located at the edge of the air spring housing (2). An elastic plug (1) is elastically inserted into the slot structure (2-1). A wire hole (1-1) is provided on the elastic plug (1). The wire hole (1-1) passes through the two peripheral walls of the elastic plug (1). The inner contour of the wire hole (1-1) matches the outer contour of the air spring inner wire harness (3) to guide the air spring inner wire harness (3) to the outside.

2. The wire harness fixing device for the air spring according to claim 1, characterized in that, The inner walls of both sides of the slot structure (2-1) are provided with protruding positioning tooth structures (2-2), and the two end faces of the elastic plug (1) are provided with positioning grooves (1-2) for positioning in a concave-convex fit with the positioning tooth structure (2-2).

3. The wire harness fixing device for the air spring according to claim 2, characterized in that, The elastic plug (1) has a tapered structure that tapers towards the tip at the end facing the bottom of the slot structure (2-1). The inner edges of the slot structure (2-1) on both sides are provided with inclined guide surfaces (2-3) that abut against and limit the tapered structure. The wire hole (1-1) is located inside the elastic plug (1) on the side adjacent to the bottom of the slot structure (2-1).

4. The wire harness fixing device for the air spring according to claim 3, characterized in that, The elastic plug (1) has a slot (1-3) on the end face facing the bottom of the slot structure (2-1) that communicates with the wire hole (1-1). The slot (1-3) is located in the central axis region of the end face of the plug structure on that side.

5. The wire harness fixing device for the air spring according to claim 4, characterized in that, The elastic plug (1) has a sloping structure on the end face of the side with the groove (1-3) that is recessed from both sides to the middle. The inclination angle of the recess is in the range of 15°-30°. The bottom of the slot structure (2-1) is flat.

6. The wire harness fixing device for the air spring according to claim 2, characterized in that, The positioning tooth structure (2-2) has a beveled guide structure (2-4) on one side edge of the top opening of the slot structure (2-1) for guiding the assembly process of the elastic plug (1).

7. The wire harness fixing device for the air spring according to claim 1, characterized in that, The elastic plug (1) is formed by vulcanization of EPDM rubber.

8. The wiring harness fixing device for the air spring according to claim 1, characterized in that, The air spring housing (2) is also press-fitted with an annular top plate (4), which abuts against the upper end face of the elastic plug (1).

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