A wire harness protection sleeve and an automobile chassis

Abstract

This utility model discloses a wire harness protective sleeve and an automobile chassis, comprising a main body having a first inner cavity for the wire harness to pass through, the first inner cavity extending along a first direction; a bending portion having a second inner cavity for the wire harness to pass through, the first inner cavity and the second inner cavity being connected and disposed in communication, the bending portion including an inner bending wall and an outer bending wall, the inner bending wall and the outer bending wall being connected to form the second inner cavity, the second inner cavity having an arc-shaped structure; and a fixing portion having a third inner cavity for the wire harness to pass through, the third inner cavity being connected and disposed in communication with the second inner cavity, the third inner cavity extending along a second direction; the bending portion being disposed between the main body and the fixing portion; an angle exists between the first direction and the second direction. The angle ranges from 90° to 180°, and the cross-sectional area of ​​the main body gradually decreases upward along the first direction. This utility model can solve the problem of wire harness protective sleeves being prone to breakage.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a wire harness protective sleeve and an automotive chassis. Background Technology

[0002] Wheel speed sensors are a key component of a vehicle's braking system, providing signals to the control unit by detecting wheel rotation speed. The sensor wiring harness is responsible for transmitting electrical signals, and the harness protective sleeve is used to secure the harness ends to the vehicle chassis. Typically, one end of the harness is fixed, while the other end moves up and down with the vibrations of the vehicle chassis.

[0003] Traditional wiring harness protective sleeves typically employ a straight-end design, meaning the entire sleeve is on the same horizontal line. When the wiring harness end moves up and down with the vibration of the vehicle chassis, the protective sleeve will bend. Under long-term dynamic load, the protective sleeve is prone to fatigue effects, causing cracks to form at the bends and further propagate. The internal wiring harness will lose its protective function and may break due to external mechanical damage or environmental corrosion, leading to risks such as wheel speed sensor signal interruption and false alarms, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to solve the problem of wire harness protective sleeves being prone to breakage. This invention provides a wire harness protective sleeve and an automotive chassis, which can effectively prevent wire harness protective sleeves from breaking.

[0005] To solve the above-mentioned technical problems, the present invention discloses a wire harness protective sleeve, comprising: a main body having a first inner cavity through which the wire harness passes, the first inner cavity extending along a first direction; a bending portion having a second inner cavity through which the wire harness passes, the first inner cavity and the second inner cavity being connected and disposed in communication, the bending portion including an inner bending wall and an outer bending wall, the inner bending wall and the outer bending wall being connected to form the second inner cavity, the second inner cavity being an arc-shaped structure; and a fixing portion having a third inner cavity through which the wire harness passes, the third inner cavity being connected and disposed in communication with the second inner cavity, the third inner cavity extending along a second direction; the bending portion being disposed between the main body and the fixing portion; and the first direction and the second direction having an angle between them.

[0006] Using the above technical solution, the first inner cavity and the third inner cavity are set at an angle, and the first inner cavity and the third inner cavity are connected through the second inner cavity. The second inner cavity has an arc-shaped structure. The inner cavity through which the wire harness passes has a bending area. That is to say, the wire harness is bent when it passes through the second inner cavity. This allows the wire harness protective sleeve to be bent along a predetermined bending direction, which can effectively reduce the deformation stress of the material and thus extend the service life of the wire harness protective sleeve.

[0007] According to another specific embodiment of the present invention, the included angle ranges from 90° to 180°.

[0008] According to another specific embodiment of the present invention, the cross-sectional area of ​​the main body gradually decreases upward along the first direction.

[0009] By adopting the above technical solution, since the deformation stress of the wire harness protective sleeve is mainly concentrated in the bending part, when the cross-sectional area of ​​the main body gradually decreases upward along the first direction, the deformation stress of the wire harness protective sleeve can be effectively released gradually upward along the first direction.

[0010] According to another specific embodiment of the present invention, the outer bent wall is provided with a first groove and a second groove, the first groove and the second groove are spaced apart along the first direction, and the first groove and the second groove are used for filling; the inner bent wall is provided with a first clearance groove; the fixing part is also provided with a second clearance groove, the second clearance groove is provided below the first clearance groove along the first direction, and the second clearance groove is provided close to the first clearance groove along the second direction.

[0011] By using the above technical solution, filling the first and second grooves with filler can effectively prevent the wire harness protective sleeve from breaking due to excessive deformation. By setting clearance grooves in the inner bending wall and the fixed part, the bending flexibility of the wire harness protective sleeve and the rebound performance can be effectively improved.

[0012] According to another specific embodiment of the present invention, the main body is provided with a third groove; the third groove is disposed above the second groove along the second direction, and the third groove is used for filling.

[0013] By using the above technical solution, filling the third groove with filler can prevent the wire harness protective sleeve from breaking due to excessive deformation.

[0014] According to another specific embodiment of the present invention, the main body is a body with a uniform cross-section along the first direction.

[0015] By adopting the above technical solution, materials can be saved and costs reduced.

[0016] According to another specific embodiment of the present invention, it further includes a first reinforcing rib and a second reinforcing rib; the inner bent wall and the outer bent wall include a first connection and a second connection; the first reinforcing rib is disposed at the first connection and extends to the main body, and the second reinforcing rib is disposed at the second connection and extends to the main body.

[0017] By adopting the above technical solution, the structural rigidity and deformation resistance of the wire harness protective sleeve can be effectively enhanced, and the service life of the wire harness protective sleeve can be extended. Through the coordinated arrangement of the first reinforcing rib and the second reinforcing rib, on the one hand, the overall structure tends to be flat, which is convenient for gripping and installation positioning. On the other hand, since the wire harness protective sleeve adopts a pre-set bending angle and direction, compared with the wire harness protective sleeve with a straight head design, the bending direction of the wire harness protective sleeve is fixed. This embodiment can effectively avoid the pre-set bending direction of the wire harness protective sleeve.

[0018] According to another specific embodiment of the present invention, the cross-sectional areas of the first reinforcing rib and the second reinforcing rib gradually decrease upward along the first direction.

[0019] By adopting the above technical solution, the deformation stress of the material can be effectively released gradually upward along the first direction.

[0020] According to another specific embodiment of the present invention, the fixing part is provided with an annular fixing groove, and the annular fixing groove is provided with a first protrusion and a second protrusion. The first protrusion and the second protrusion are respectively used to fix with the fixing platform, and the first protrusion, the second protrusion and the fixing platform are circumferentially limited; the outer bent wall is used to be opposite to the fixing platform, and the outer bent wall is disposed between the inner bent wall and the fixing platform.

[0021] By adopting the above technical solution, the rotation of the fixed part along its circumference can be effectively restricted.

[0022] The present invention also discloses an automobile chassis, the automobile chassis including at least the wiring harness protective sleeve of any of the above embodiments, which includes a fixing platform, the fixing platform including a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate being connected and disposed; the outer bent wall being opposite to the first fixing plate; the second fixing plate and the fixing part being circumferentially limited; the wiring harness passing through the first inner cavity, the second inner cavity and the third inner cavity. Attached Figure Description

[0023] Figure 1 A perspective view of the wire harness protective sleeve in some embodiments is shown.

[0024] Figure 2 A perspective view of the wire harness protective sleeve provided in an embodiment of this application is shown.

[0025] Figure 3 A side sectional view of the wire harness protective sleeve provided in an embodiment of this application is shown.

[0026] Figure 4 A schematic diagram showing the extreme positions of the wire harness protective sleeve is provided. Figure 4 (a) indicates the upper limit position of the wire harness protective sleeve. Figure 4 (b) indicates the lower limit position of the wire harness protective sleeve.

[0027] Figure 5 A front view of a wire harness protective sleeve provided in another embodiment of this application is shown.

[0028] Figure 6 A side view of a wire harness protective sleeve provided in another embodiment of this application is shown.

[0029] Figure 7 An exploded view of the wire harness protective sleeve and fixing platform provided in an embodiment of this application is shown.

[0030] Figure 8 A perspective view of the wire harness protective sleeve and fixing platform provided in an embodiment of this application is shown.

[0031] Figure 9 A cross-sectional view of the wire harness protective sleeve and fixing platform provided in an embodiment of this application is shown. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0033] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element 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 the utility model.

[0035] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0038] refer to Figure 1 Traditional wire harness protective sleeves 100' typically employ a straight-end design, meaning the entire sleeve is on the same horizontal line. When the end of wire harness A' moves up and down with the vibration of the vehicle chassis, the protective sleeve 100' will bend. Under long-term dynamic load, the protective sleeve 100' is prone to fatigue effects, resulting in cracks at the bends that can further propagate. The internal wire harness A' will lose its protective function and may break due to external mechanical damage or environmental corrosion, leading to risks such as wheel speed sensor signal interruption and false alarms, posing a safety hazard.

[0039] Therefore, this application provides a wire harness protective sleeve for use in an automobile chassis. The main body and the fixing part of the wire harness protective sleeve have an angle. By bending the wire harness protective sleeve in advance along a predetermined bending direction, the deformation stress of the material can be effectively reduced, thereby extending the service life of the wire harness protective sleeve.

[0040] Specifically, refer to Figure 2 and Figure 3The wire harness protective sleeve 100 of this application embodiment includes a main body 200, a bending portion 300, and a fixing portion 400. The main body 200 has a first inner cavity 210 through which the wire harness A passes, and the first inner cavity 210 extends along a first direction X. The bending portion 300 has a second inner cavity 310 through which the wire harness A passes. The first inner cavity 210 and the second inner cavity 310 are connected and disposed in communication. The bending portion 300 includes an inner bending wall 320 and an outer bending wall 330. The inner bending wall 320 and the outer bending wall 330 are connected to form the second inner cavity 310, and the second inner cavity 310 has an arc-shaped structure. The fixing portion 400 has a third inner cavity 410 through which the wire harness A passes. The third inner cavity 410 is connected to the second inner cavity 310 and extends along a second direction Z. The bending portion 300 is disposed between the main body 200 and the fixing portion 400. There is an angle α between the first direction X and the second direction Z.

[0041] Specifically, the main body 200 forms an angle α with the fixing part 400 through the bending part 300, thereby bending the wire harness protective sleeve 100 in advance along a predetermined bending direction.

[0042] For example, in this embodiment of the application, the main body 200 and the bent portion 300 are cylindrical structures. However, those skilled in the art will understand that in other embodiments, the main body 200 and the bent portion 300 can be other structures, such as cuboids, cubes, etc., and this application does not impose any limitations on this.

[0043] For example, the wire harness protective sleeve 100 in this embodiment is made of ethylene propylene rubber. However, those skilled in the art will understand that in other embodiments, the wire harness protective sleeve 100 can be made of other elastic materials, such as silicone rubber, thermoplastic elastomers, etc. This application does not limit this.

[0044] refer to Figure 3 and Figure 4 The included angle α is any value ranging from 90° to 180°.

[0045] It should be noted that the bending angle of the wire harness protective sleeve is based on the upper limit position B. Figure 4 (a) The angle of bending of the wire harness protective sleeve at 100 degrees, and at the lower limit position C ( Figure 4 The angle of bending of the wire harness protective sleeve 100 is determined by the following: Specifically, wire harness A is provided with wire harness protective sleeves 100 at both ends. As shown in the figure, the left end of wire harness A is the fixed end. When the right end of wire harness A moves upward along the second direction Z, the vertex position is the upper limit position B. Similarly, when the right end of wire harness A moves downward along the second direction Z, the bottom point position is the lower limit position C.

[0046] For example, when wire harness A is at its upper limit position B, the bending angle of the wire harness protective sleeve 100 is 110°, and at its lower limit position C, the bending angle is 170°. The pre-bending angle of the wire harness protective sleeve 100 can be initially set to an intermediate value of 140° (calculated by 110° + (170° - 110°) ÷ 2 = 140°). It should be noted that in the actual design process, the pre-bending angle of the wire harness protective sleeve 100 also needs to take into account factors such as the material properties of the wire harness protective sleeve 100 and the length of wire harness A. After initially obtaining the set value, the optimal bending angle needs to be further verified through experiments.

[0047] For example, in this embodiment, the included angle α is 150°. However, those skilled in the art will understand that in other embodiments, the included angle α can be 90°, 135°, 175°, 180°, etc., and this application does not limit it in this way.

[0048] Further, refer to Figure 3 The cross-sectional area of ​​the main body 200 gradually decreases upward along the first direction X. The outer bent wall 330 is provided with a first groove 331 and a second groove 332, which are spaced apart along the first direction X and are used for filling. The inner bent wall 320 is provided with a first clearance groove 321. The fixing part 400 is also provided with a second clearance groove 420, which is located below the first clearance groove 321 along the first direction X and close to the first clearance groove 321 along the second direction Z. The main body 200 is provided with a third groove 220, which is located above the second groove 332 along the second direction Z and is used for filling.

[0049] It should be noted that, in this embodiment, the outer bent wall 330 is provided with a first groove 331 and a second groove 332, and the main body 200 is provided with a third groove 220. The grooves are used to fill the interior of the grooves to prevent the wire harness protective sleeve 100 from breaking due to excessive deformation. However, those skilled in the art will understand that in other embodiments, the outer bent wall 330 and the inner bent wall 320 may be provided with other numbers of grooves, such as three, four, or five. Furthermore, the amount of filler in the grooves needs to be adapted to the bending angle of the wire harness protective sleeve 100, and correspondingly, the depth and width of the grooves need to be adapted to the bending angle of the wire harness protective sleeve 100. This application does not impose any limitations on this.

[0050] In some possible embodiments, reference Figure 5 and Figure 6The main body 200' has a uniform cross-section along the first direction X, and also includes a first reinforcing rib 210' and a second reinforcing rib 220'; the inner bent wall 320' and the outer bent wall 330' include a first connection 340' and a second connection 350'; the first reinforcing rib 210' is disposed at the first connection and extends to the main body 200', and the second reinforcing rib 220' is disposed at the second connection and extends to the main body 200'. The cross-sectional areas of the first reinforcing rib 210' and the second reinforcing rib 220' gradually decrease upward along the first direction X.

[0051] Specifically, when the upper and lower cross-sectional areas of the main body 200' are the same, on the one hand, materials can be effectively saved and costs reduced. On the other hand, given that the deformation stress of the wire harness protective sleeve 100 is concentrated in the bending part 300', the main body 200' is a uniform cross-section body along the first direction X and cannot effectively release the deformation stress upward along the first direction X. Therefore, by adding the first reinforcing rib 210' and the second reinforcing rib 220', the structural rigidity can be effectively enhanced, and the deformation stress can be released upward along the first direction X.

[0052] It should be noted that, given that the wire harness protective sleeve 100 adopts a pre-set bending angle and direction, compared to the straight-headed wire harness protective sleeve 100', its bending direction is fixed. In this embodiment, the first reinforcing rib 210' and the second reinforcing rib 220' are respectively disposed at the first connection 340' and the second connection 350' and extend to the main body 200'. This design method effectively avoids the pre-set bending direction of the wire harness protective sleeve 100 while ensuring structural strength.

[0053] refer to Figures 7 to 9 The fixing part 400 is provided with an annular fixing groove 430, and a first protrusion 431 and a second protrusion 432 are provided in the annular fixing groove 430. The first protrusion 431 and the second protrusion 432 are respectively used to fix with the fixing platform 500, and the first protrusion and the second protrusion are circumferentially limited with the fixing platform. The outer bent wall 330 is used to face the fixing platform 500, and the outer bent wall 330 is disposed between the inner bent wall 320 and the fixing platform 500.

[0054] It should be noted that, given that the wire harness protective sleeve 100 has a pre-set bending angle and direction, its bending direction is fixed compared to the straight-headed wire harness protective sleeve 100'. Therefore, when the fixing part 400 is connected to the fixing platform 500, the fixing part 400 cannot rotate around its circumference. The first protrusion 431 and the second protrusion 432 cooperate with the fixing platform 500 to effectively restrict the fixing part 400 from rotating around its circumference. That is, when the fixing platform 500 is fixed to the car chassis, the wire harness protective sleeve 100 does not rotate relative to the fixing platform 500.

[0055] refer to Figures 7 to 9This application also provides an automobile chassis (not shown in the figure), which includes at least the wiring harness protective sleeve 100 in any of the foregoing embodiments. The chassis includes a fixing platform 500, which includes a first fixing plate 510 and a second fixing plate 520. The first fixing plate 510 and the second fixing plate 520 are connected and disposed together. The outer bent wall 330 (330') is opposite to the first fixing plate 510. The second fixing plate and the fixing part are circumferentially limited. The wiring harness A passes through the first inner cavity 210, the second inner cavity 310 and the third inner cavity 410.

[0056] Specifically, the second fixing plate 520 is provided with a third protrusion 521 and a fourth protrusion 522. The first protrusion 431 cooperates with the third protrusion 521, and the second protrusion 432 cooperates with the fourth protrusion 522, so that the fixing part 400 is inserted into the groove 530 of the second fixing plate 520 and the fixing part 400 is limited to rotate circumferentially therein. However, those skilled in the art will understand that in other embodiments, the fixing part 400 can be fixed to the fixing platform 500 in other ways, such as adhesive, elastic clamping, etc., and this application does not limit this.

[0057] For example, the first fixing plate 510 and the second fixing plate 520 are vertically fixed and integrally formed. However, those skilled in the art will understand that in other embodiments, depending on the different designs of the vehicle chassis, the first fixing plate 510 and the second fixing plate 520 may be non-vertically fixed or connected by other means, such as welding, gluing, etc. This application does not limit this.

[0058] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A wire harness protective sleeve, characterized in that, include: The main body has a first inner cavity through which the wire harness passes, and the first inner cavity extends along a first direction; The bending section has a second inner cavity through which the wire harness passes. The first inner cavity and the second inner cavity are connected. The bending section includes an inner bending wall and an outer bending wall. The inner bending wall and the outer bending wall are connected to form the second inner cavity. The second inner cavity has an arc-shaped structure. The fixing part has a third inner cavity through which the wire harness passes, the third inner cavity being connected to the second inner cavity, and the third inner cavity extending along a second direction; The bending portion is disposed between the main body portion and the fixing portion; There is an angle between the first direction and the second direction.

2. The wire harness grommet of claim 1, wherein, The included angle ranges from 90° to 180°.

3. The wire harness grommet of claim 1, wherein, The cross-sectional area of ​​the main body gradually decreases upward along the first direction.

4. The wire harness protective sleeve as described in claim 3, characterized in that, The outer bent wall is provided with a first groove and a second groove, the first groove and the second groove are spaced apart along the first direction, and the first groove and the second groove are used for filling; The inner bent wall is provided with a first clearance groove; The fixing part is also provided with a second clearance groove, which is disposed below the first clearance groove along the first direction and is disposed close to the first clearance groove along the second direction.

5. The wire harness grommet of claim 4, wherein, The main body is provided with a third groove; the third groove is disposed above the second groove along the second direction, and the third groove is used for filling.

6. The wire harness grommet of claim 1, wherein, The main body is a body with a constant cross-section along the first direction.

7. The wire harness grommet of claim 6, wherein, It also includes a first reinforcing rib and a second reinforcing rib; The inner bent wall and the outer bent wall include a first connection and a second connection; The first reinforcing rib is disposed at the first connection and extends to the main body, and the second reinforcing rib is disposed at the second connection and extends to the main body.

8. The wire harness grommet of claim 7, wherein, The cross-sectional areas of the first reinforcing rib and the second reinforcing rib gradually decrease upward along the first direction.

9. A wire harness cover according to any one of claims 1-8, wherein The fixing part is provided with an annular fixing groove, and the annular fixing groove is provided with a first protrusion and a second protrusion. The first protrusion and the second protrusion are respectively used to fix with the fixing platform, and the first protrusion, the second protrusion and the fixing platform are circumferentially limited. The outer bend wall is positioned opposite the fixed platform and is located between the inner bend wall and the fixed platform.

10. An automobile chassis, characterized in that, Includes the wire harness protective sleeve as described in claim 9; A fixed platform, the fixed platform including a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate being connected and disposed together; The outer bent wall is opposite to the first fixed plate; The second fixing plate and the fixing part are circumferentially limited; A wire harness that passes through the first inner cavity, the second inner cavity, and the third inner cavity.

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