Wiring harness capable of preventing water accumulation

Abstract

The utility model discloses a wire harness capable of preventing water accumulation, which comprises a sheath and a plurality of branch wire harnesses, the end parts of the plurality of branch wire harnesses are provided with wiring terminals, the outer wall of the sheath is provided with a strip-shaped notch along the length direction, the branch wire harnesses pass through the inside of the sheath, and the outer wall of the sheath is provided with a buckle belt for circumferentially fixing the sheath. The two end parts of the sheath and the branch wire harness are wound, sealed and fixed through adhesive tapes; and an elastic sealing sleeve is sleeved outside the joint of the branch wire harness and the wiring terminal. According to the utility model, the sheath is of an open structure and is fastened by the adjustable buckle belt, when water is accumulated in the sheath, the buckle belt is loosened, the accumulated water can be automatically discharged from the strip-shaped notch, then the buckle belt is fastened again, and the whole process of discharging the accumulated water in the sheath is simple to operate, and the sheath and branch wiring harnesses in the sheath cannot be damaged; the elastic sealing sleeve made of rubber is sleeved outside the joint of the branch wire harness and the wiring terminal, and the annular sealing gasket at the front end of the elastic sealing sleeve always abuts against the inner end face of the wiring terminal to ensure the sealing performance and prevent water from flowing in from the position.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wire harness, in particular to a wire harness capable of preventing water accumulation. BACKGROUND

[0002] As an important part of the electrical system, the wire harness of the engineering machinery vehicle is directly related to the performance and reliability of the engineering machinery vehicle. Once the wire harness fails, it may cause the engineering machinery vehicle to stop or operate unsafely, which not only affects the production efficiency, but also may cause danger to the working environment. Compared with the wire harness of ordinary vehicles, the wire harness of the engineering machinery vehicle has a relatively harsh working environment, and some wire harnesses are exposed to wind and rain for a long time. Therefore, a protective sleeve needs to be arranged outside the wire harness to protect the wire harness inside. However, it is difficult for the protective sleeve to be completely sealed for a long time. Once a certain position of the protective sleeve is damaged, rainwater will enter the protective sleeve from the damaged position and be stored in the protective sleeve when it rains. The wire harness in the protective sleeve will be soaked in water. If the wire harness in the water is damaged, a short circuit will occur and cause a fault. Currently, in order to solve this problem, the protective sleeve is manually damaged, and the water is discharged from the damaged position. Since the protective sleeve is generally hard, it is not easy to damage. Moreover, when the protective sleeve is damaged, the branch wire harness inside the protective sleeve will be inevitably damaged. Therefore, it is a helpless solution to damage the protective sleeve to discharge water. In addition, due to the large vibration of the engineering machinery vehicle during work, the sealing performance of the terminal interface will decrease over time, and rainwater will also enter the terminal interface. Therefore, water entering the terminal interface of the wire harness is also a common reason affecting the normal work of the wire harness. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a wire harness capable of conveniently discharging water accumulated in the protective sleeve without damaging the protective sleeve and the branch wire harness inside, and improving the sealing performance of the connection between the branch wire harness and the terminal.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a protective sleeve and a plurality of branch wire harnesses are provided, the end part of the branch wire harness is provided with a terminal, a strip-shaped gap is formed on the outer wall of the protective sleeve along the length direction, the longitudinal section of the protective sleeve is in the shape of "C" in the normal state, the branch wire harness passes through the inside of the protective sleeve, the outer wall of the protective sleeve is provided with a buckle belt to fix the protective sleeve in the circumferential direction, and the two end parts of the protective sleeve are fixed and sealed by the adhesive tape; an elastic sealing sleeve is arranged outside the connection between the branch wire harness and the terminal, the elastic sealing sleeve comprises a bellows and an annular sealing pad, the annular sealing pad is arranged at one end of the bellows, and the other end of the bellows is provided with a necking part; the annular sealing pad abuts against the inner end surface of the terminal, and the necking part of the bellows is connected with the branch wire harness.

[0005] Further, the buckle belt has a plurality of buckle belts, and the buckle belts are arranged at intervals along the length direction of the protective sleeve.

[0006] Further, the necking of the bellows is fixedly connected with the wire harness through a cable tie.

[0007] Further, the elastic sealing sleeve is made of rubber.

[0008] Further, the buckle belt is adjustable in tightness.

[0009] Compared with the prior art, the sheath is provided with a strip-shaped opening, is of an open structure as a whole, and is fastened by the adjustable buckle belt, when water accumulates in the sheath, the buckle belt is loosened, the water is automatically discharged from the strip-shaped opening, and then the buckle belt is fastened again, the whole process of discharging the water accumulated in the sheath is simple in operation and the sheath and the wire harness inside the sheath are not damaged; the external sleeve of the wire harness and the connecting position of the terminal is provided with the elastic sealing sleeve made of rubber, the annular sealing gasket at the front end of the elastic sealing sleeve always abuts against the inner end face of the terminal to ensure the sealing property and prevent water from flowing in from the position. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a whole structure schematic view of the utility model;

[0011] Figure 2 It is Figure 1 It is a partial enlarged view of A part in the middle;

[0012] Figure 3 It is a structure schematic view of the elastic sealing sleeve of the utility model;

[0013] In the drawing: 1, sheath, 11, strip-shaped opening, 2, wire harness, 3, buckle belt, 4, terminal, 5, elastic sealing sleeve, 51, bellows, 52, annular sealing gasket, 53, necking. DETAILED DESCRIPTION

[0014] The utility model will be further described below in combination with the drawings.

[0015] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0016] As Figures 1 to 3As shown, this utility model provides a technical solution: including a sheath 1 and several branch wire harnesses 2, the ends of the branch wire harnesses 2 are provided with terminals 4, the outer wall of the sheath 1 has a strip-shaped notch 11 along the length direction, in the normal state, that is, when there is no external force to tighten it, the longitudinal section of the sheath 1 is "C" shaped, the branch wire harnesses 2 pass through the inside of the sheath 1, the outer wall of the sheath 1 is provided with buckle straps 3 to fix the sheath 1 circumferentially, the buckle straps 3 are adjustable and there are multiple buckle straps 3, the multiple buckle straps 3 are spaced apart along the length direction of the sheath 1, at this time when the buckle straps 3 are tightened by external force, the strip-shaped notch 11 is closed, the longitudinal section of the sheath 1 is close to "O" shaped, and the two ends of the sheath 1 are sealed and fixed to the branch wire harnesses 2 by wrapping with tape.

[0017] The sheath 1 has an open structure. If water enters the sheath 1, simply loosen one or more buckle straps 3 that are close to the water accumulation point. Once the external force is removed, the sheath 1 will automatically rebound, that is, the closed strip-shaped opening 11 will open, and the water will flow out from the open strip-shaped opening 11. After the water has drained, tighten the buckle straps 3 again to close the strip-shaped opening 11.

[0018] like Figure 2 As shown, the connection between the branch harness 2 and the terminal 4 is covered with a rubber elastic sealing sleeve 5, such as... Figure 3 As shown, the elastic sealing sleeve 5 includes a bellows 51 and an annular sealing gasket 52. The annular sealing gasket 52 is located at one end of the bellows 51, and the other end of the bellows 51 has a constriction 53. The annular sealing gasket 52 abuts against the inner end face of the terminal 4. The constriction 53 of the bellows 51 is connected to the branch harness 2. To improve the connection effect between the bellows 51 and the branch harness 2, the constriction 53 is fixedly connected to the branch harness 2 by a cable tie. Since the constriction 53 is fixedly connected to the branch harness 2, the overall position of the bellows 51 is relatively fixed. In addition, the bellows 51 has a certain degree of elasticity, so the annular sealing gasket 52 at its front end will always abut against the inner end face of the terminal 4. The elastic sealing sleeve 5 is made of rubber, so it can ensure the sealing between the annular sealing gasket 52 and the inner end face of the terminal 4, preventing water from flowing in from this position.

[0019] To improve the sealing performance at the terminal block interface, the bellows 51 can be slightly compressed, and then the reduced end 53 can be fixedly connected to the branch wire harness 2 with a cable tie. By increasing the deformation of the bellows 51, the elastic potential energy of the bellows 51 can be increased, thereby increasing the pressure of the annular sealing gasket 52 on the inner end face of the terminal block 4, so as to improve the sealing performance between the annular sealing gasket 52 and the inner end face of the terminal block 4.

[0020] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0021] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any slight modification, equivalent replacement and improvement made according to the technical essence of the present application to the above embodiments shall be included in the protection scope of the technical scheme of the present application.

Claims

1. A wire harness for preventing water accumulation, comprising a sheath (1) and a plurality of branch wire harnesses (2), wherein the ends of the plurality of branch wire harnesses (2) are provided with terminals (4), characterized in that: A strip-shaped notch (11) is opened on the outer wall of the sheath (1) along the length direction. Under normal conditions, the longitudinal section of the sheath (1) is "C" shaped. The branch wire harness (2) passes through the inside of the sheath (1). The outer wall of the sheath (1) is provided with a buckle (3) to fix the sheath (1) circumferentially. The two ends of the sheath (1) and the branch wire harness (2) are sealed and fixed by wrapping with tape. The connection between the branch wire harness (2) and the terminal (4) is covered with an elastic sealing sleeve (5). The elastic sealing sleeve (5) includes a bellows (51) and an annular sealing gasket (52). The annular sealing gasket (52) is located at one end of the bellows (51), and the other end of the bellows (51) is provided with a constriction (53). The annular sealing gasket (52) abuts against the inner end face of the terminal (4), and the constriction (53) of the bellows (51) is connected to the branch wire harness (2).

2. The wiring harness for preventing water accumulation according to claim 1, characterized in that: There are multiple buckle straps (3), and the multiple buckle straps (3) are spaced apart along the length direction of the sheath (1).

3. A wire harness for preventing water accumulation according to claim 1, characterized in that: The constricted end (53) of the corrugated pipe (51) is fixedly connected to the branch wire harness (2) by a cable tie.

4. A wire harness for preventing water accumulation according to claim 1, characterized in that: The elastic sealing sleeve (5) is made of rubber.

5. A wire harness for preventing water accumulation according to claim 1, characterized in that: The buckle strap (3) is adjustable in tightness.

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