High-voltage wire harness isolation structure

Abstract

The utility model belongs to new energy automobile technical field, concretely relates to a high -tension wire harness isolation structure, including support plate, connecting assembly and bunching assembly, bunching assembly includes the bunching cylinder, clamping plate and the piece that defers of being connected in proper order from top to bottom, bunching cylinder is hollow structure, has been seted up wire harness perforation on clamping plate to supply high -tension wire harness to pass through, and bunching cylinder lower extreme communicates with wire harness perforation, and the piece that defers is provided with several, several pieces that defer are along wire harness perforation circumferential array setting in the bottom of clamping plate, and located wire harness perforation outside, and several pieces that defer are interval distribution between them, the mounting hole is seted up on support plate, and bunching cylinder is clamped in mounting hole, connecting assembly sets up on support plate for with support plate detachable connection on the body sheet metal, and this scheme has flexible defer, fast positioning and reliable connection function.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle technology, and more specifically, it relates to a high-voltage wiring harness isolation structure. Background Technology

[0002] To meet the isolation requirements of high-voltage systems in new energy vehicles, existing high-voltage wiring harness isolation structures have adopted weather-resistant and flame-retardant insulation materials such as EPDM and improved structural strength through integrated vulcanization molding. However, in the actual assembly and application of high-voltage wiring harnesses in new energy vehicles, there are often interior components such as clips and carpets around the high-voltage wiring harness connectors. This causes spatial interference to occur during the assembly of traditional rigid or integral rubber isolation structures, resulting in difficulties in insertion, component damage, reduced isolation reliability, and even the risk of insulation failure. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a high-voltage wiring harness isolation structure to solve the problem of spatial interference that easily occurs during assembly of existing traditional rigid or integral rubber isolation structures.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A high-voltage wire harness isolation structure includes: a support plate, a connecting assembly, and a wire harness assembly;

[0006] The cable assembly includes a cable tube, a snap-fit ​​plate, and a clearance spring connected in sequence from top to bottom;

[0007] The cable bundle tube has a hollow structure. The snap-fit ​​plate has a cable bundle through hole for the high voltage cable bundle to pass through. The lower end of the cable bundle tube is connected to the cable bundle through hole. Several clearance springs are arranged in a circumferential array at the bottom of the snap-fit ​​plate along the cable bundle through hole and located outside the cable bundle through hole. The clearance springs are spaced apart.

[0008] The support plate has mounting holes, and the cable bundle is snapped into the mounting holes;

[0009] The connecting component is mounted on the support plate and is used to detachably connect the support plate to the body sheet metal.

[0010] Furthermore, a snap-fit ​​groove is provided at the bottom of the support plate, and the snap-fit ​​plate snaps into the snap-fit ​​groove.

[0011] Furthermore, the connecting assembly includes four bolts;

[0012] The support plate is a rectangular steel plate, and the four bolts are arranged in an array along the four corners of the support plate. The shape of the snap-fit ​​plate is adapted to the support plate, and the screw ends of the bolts penetrate the support plate and the snap-fit ​​plate downwards in sequence.

[0013] Furthermore, a connecting ring is provided at the bottom of the snap-fit ​​plate, and several of the clearance springs are provided at the bottom of the connecting ring;

[0014] The cable bundle, snap-fit ​​plate, connecting ring, and relief spring are all integrally molded structures, and all components are made of rubber.

[0015] Furthermore, the cable bundle includes a cylindrical section and a frustum-shaped section connected sequentially from top to bottom. The lower end of the frustum-shaped section is connected to the cable bundle through hole of the snap-fit ​​plate. An annular groove is provided on the lower part of the outer peripheral wall of the frustum-shaped section, and the mounting hole of the support plate is engaged with the annular groove.

[0016] Furthermore, four relief springs are provided, and the outer surfaces of the four relief springs are all arc-shaped inclined surfaces, with the lower ends inclined inward.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model designs the wire harness assembly as including a wire harness cylinder, a snap-fit ​​plate, and circumferentially arrayed independent clearance springs, and uses rubber material for integral molding. This allows the structure to achieve local bending during assembly by utilizing the spacing structure between the clearance springs and the flexibility of the material, effectively avoiding spatial interference from surrounding components, significantly improving assembly convenience and success rate. Through the spaced rubber clearance springs, the flexible properties of rubber can be flexibly bent along the high-voltage wire harness insertion interface, and the spacing design avoids overall rigid constraints, effectively avoiding surrounding internal components and preventing component scratches or insertion jams during assembly.

[0019] 2. By pre-clamping the spring clip or connecting ring with the high-voltage wiring harness connector, rapid and accurate initial positioning is achieved. This is then combined with the bolt connection assembly for final tightening, making the assembly process simple and intuitive. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-voltage wire harness isolation structure according to this utility model.

[0021] Figure 2 This is an exploded structural diagram (first-person view) of a high-voltage wire harness isolation structure according to this utility model.

[0022] Figure 3 This is an exploded structural diagram (second perspective) of a high-voltage wire harness isolation structure according to this utility model.

[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] Support plate 1, mounting hole 11, snap-fit ​​groove 12, connecting component 2, bolt 21, wire harness assembly 3, wire harness cylinder 31, snap-fit ​​plate 32, clearance spring 33, wire harness through hole 34, connecting ring 35, cylindrical part 36, frustum cylindrical part 37, annular snap-fit ​​groove 38. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] As attached Figure 1 To be continued Figure 3 As shown:

[0030] This utility model provides a high-voltage wire harness isolation structure, including: a support plate 1, a connecting component 2, and a wire harness component 3;

[0031] The cable assembly 3 includes a cable tube 31, a snap-fit ​​plate 32, and a clearance spring 33 connected sequentially from top to bottom;

[0032] The cable bundle 31 has a hollow structure. The snap-fit ​​plate 32 has a cable bundle through hole 34 for high voltage cables to pass through. The lower end of the cable bundle 31 is connected to the cable bundle through hole 34. Several clearance springs 33 are arranged in a circumferential array at the bottom of the snap-fit ​​plate 32 along the cable bundle through hole 34 and are located outside the cable bundle through hole 34. The clearance springs 33 are spaced apart.

[0033] The support plate 1 has a mounting hole 11, and the cable bundle 31 is snapped into the mounting hole 11;

[0034] The connecting component 2 is disposed on the support plate 1 and is used to detachably connect the support plate 1 to the body sheet metal.

[0035] In this embodiment, several clearance springs 33 are used to snap into the high-voltage wiring harness connectors on the vehicle body sheet metal.

[0036] As a preferred embodiment, the bottom of the support plate 1 is provided with a snap-fit ​​groove 12, and the snap-fit ​​plate 32 is snapped into the snap-fit ​​groove 12.

[0037] In this embodiment, the snap-fit ​​plate 32 is snapped into the snap-fit ​​groove 12 at the bottom of the support plate 1 and the snap-fit ​​connection is embedded, which increases the contact area between the two and forms a structural constraint, preventing the snap-fit ​​plate 32 from shifting under force and increasing the strength of the snap-fit ​​plate 32. The embedded connection allows the snap-fit ​​plate 32 to be subjected to force through the snap-fit ​​groove 12 to the support plate 1, preventing the wire harness perforation 34 from shifting due to the snap-fit ​​plate 32 being subjected to force alone, and preventing wear of the high-voltage wire harness insulation layer. The tight fit between the snap-fit ​​groove 12 and the snap-fit ​​plate 32 eliminates the gap between the two, reducing the intrusion of moisture and dust into the high-voltage wire harness area from the gap, and avoiding the defect of weak sealing in the existing traditional snap-fit ​​structure.

[0038] As a preferred embodiment, the connecting assembly 2 includes four bolts 21;

[0039] The support plate 1 is a rectangular steel plate, and the four bolts 21 are arranged in an array along the four corners of the support plate 1. The shape of the snap-fit ​​plate 32 is adapted to the support plate 1, and the screw end of the bolt 21 passes through the support plate 1 and the snap-fit ​​plate 32 in sequence.

[0040] In this embodiment, the steel plate of the support plate 1 is model DC01. Four mounting holes are provided on the body sheet metal corresponding to the four bolts 21. During installation, the clearance spring 33 is inserted into the high-voltage wiring harness connector, and the bottom of the clamping plate 32 abuts against the body sheet metal. Simultaneously, the threaded end of the bolt 21 passes through the mounting hole, and a nut is used to connect it to the threaded end of the bolt 21, thus detachably connecting the support plate 1 to the body sheet metal. The rigidity of the steel plate of the support plate 1 resists vehicle vibration, preventing the isolation structure from loosening. The uniform force design of the four corner bolts 21 prevents deformation of the support plate 1 caused by localized stress concentration, ensuring that the structural accuracy is maintained even after long-term use. The detachable structure of the bolts 21 and nuts allows for the separate replacement of the rubber wiring harness assembly 3 (if it is damaged due to aging) without removing the body sheet metal.

[0041] As a preferred embodiment, the bottom of the snap-fit ​​plate 32 is also provided with a connecting ring 35, and several of the clearance springs 33 are all provided at the bottom of the connecting ring 35; specifically, the inner wall of the connecting ring 35 is chamfered with the lower end inclined outward;

[0042] The cable bundle 31, snap-fit ​​plate 32, connecting ring 35 and relief spring 33 are integrally formed structures, and the cable bundle 31, snap-fit ​​plate 32, connecting ring 35 and relief spring 33 are all made of rubber.

[0043] In this embodiment, the connecting ring 35 is used to snap into the high-voltage wiring harness connector on the body sheet metal, thereby achieving rapid positioning. The initial alignment is completed as soon as the connecting ring 35 snaps into the connector, without the need for repeated adjustments. The one-piece molding eliminates splicing gaps and prevents moisture from seeping in along the splice. The cable bundle 31, the snap plate 32, the connecting ring 35, and the clearance spring 33 are made of EPDM rubber, which has high insulation strength and aging resistance, ensuring that high-voltage isolation requirements are still met after long-term use. The clearance spring 33 is made of rubber, and there are gaps between each clearance spring 33, which is convenient to assemble and has strong versatility. When the high-voltage wiring harness connector interferes with the body's internal peripheral parts (such as clips, carpets, etc.), the flexibility of the rubber material of the clearance spring 33 allows it to bend at the high-voltage wiring harness connector, thereby effectively avoiding interference. Since there are gaps between each clearance spring 33, its bending angle is relatively large. The spaced-out relief springs 33 can be bent independently through the flexibility of rubber, adapting to different peripheral interior components (such as clip protrusions and carpet edges), and are compatible with the body layout of multiple vehicle models.

[0044] As a preferred embodiment, the wire harness tube 31 includes a cylindrical part 36 and a frustum-shaped cylindrical part 37 connected sequentially from top to bottom. The lower end of the frustum-shaped cylindrical part 37 is connected to the wire harness through hole 34 of the snap-fit ​​plate 32. An annular groove 38 is provided on the lower part of the outer peripheral wall of the frustum-shaped cylindrical part 37, and the mounting hole 11 of the support plate 1 is engaged with the annular groove 38.

[0045] In this embodiment, the mounting hole 11 of the support plate 1 engages with the annular slot 38, making the engagement of the wire harness tube more secure. The tapered structure of the frustum-shaped cylindrical portion 37 forms a "flared guide," preventing jamming due to hole diameter mismatch when the high-voltage wire harness is inserted and preventing scratches on the wire harness insulation layer.

[0046] As a preferred embodiment, four relief springs 33 are provided, and the outer surfaces of the four relief springs 33 are all arc-shaped inclined surfaces with their lower ends inclined inward.

[0047] In this embodiment, the four spring pieces are evenly stressed, ensuring that the connecting ring 35 fits tightly against the inner wall of the insertion interface, preventing loosening caused by unilateral stress. The inward-sloping structure at the lower end guides the spring pieces to retract naturally when inserted, reducing assembly resistance. Simultaneously, after insertion, the spring pieces achieve tight fixation through elastic rebound. The arc-shaped inclined surface, especially the inward-sloping design at the lower end, provides a self-guiding effect during assembly and insertion, guiding the spring pieces to smoothly retract into the insertion interface, reducing assembly force. The arc-shaped outer surface reduces the friction area with surrounding components, reducing resistance during avoidance. The spaced spring pieces can be bent independently. Even if there is interference in a certain direction, only the corresponding spring piece needs to be bent, without affecting the overall structural stability, making it suitable for more complex vehicle interior environments.

[0048] During installation, the wire harness is passed through the wire harness tube 31, the clearance spring 33 is aligned and snapped into the body sheet metal connector, the bolt 21 is aligned and passed through the mounting hole on the body sheet metal until the snap plate 32 abuts against the body sheet metal and the connecting ring 35 is snapped into the high-voltage wire harness connector to complete the positioning. Then, the nut is used to connect with the threaded screw of the bolt 21 to fasten the entire structure to the body sheet metal.

[0049] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-voltage wiring harness isolation structure, characterized in that, include: Support plate (1), connecting assembly (2) and wire harness assembly (3); The cable bundle assembly (3) includes a cable bundle tube (31), a snap-fit ​​plate (32), and a clearance spring (33) connected sequentially from top to bottom; The cable bundle tube (31) has a hollow structure. The snap-fit ​​plate (32) has a cable bundle through hole (34) for the high voltage cable bundle to pass through. The lower end of the cable bundle tube (31) is connected to the cable bundle through hole (34). Several relief springs (33) are provided. Several relief springs (33) are arranged in a circumferential array at the bottom of the snap-fit ​​plate (32) along the cable bundle through hole (34) and are located outside the cable bundle through hole (34). Several relief springs (33) are distributed at intervals. The support plate (1) has an installation hole (11) and the wire bundle (31) is snapped into the installation hole (11); The connecting component (2) is disposed on the support plate (1) and is used to detachably connect the support plate (1) to the body sheet metal.

2. The high-voltage wiring harness isolation structure as described in claim 1, characterized in that: The support plate (1) has a snap-fit ​​groove (12) at its bottom, and the snap-fit ​​plate (32) snaps into the snap-fit ​​groove (12).

3. The high-voltage wiring harness isolation structure as described in claim 1, characterized in that: The connecting assembly (2) includes four bolts (21); The support plate (1) is a rectangular steel plate. The four bolts (21) are arranged in an array at the four corners of the support plate (1). The shape of the snap-fit ​​plate (32) is adapted to the support plate (1). The screw end of the bolt (21) passes through the support plate (1) and the snap-fit ​​plate (32) downwards in sequence.

4. The high-voltage wiring harness isolation structure as described in claim 1, characterized in that: The bottom of the snap-fit ​​plate (32) is also provided with a connecting ring (35), and several of the clearance springs (33) are provided at the bottom of the connecting ring (35); The cable bundle (31), snap-fit ​​plate (32), connecting ring (35) and relief spring (33) are integrally formed structures, and the cable bundle (31), snap-fit ​​plate (32), connecting ring (35) and relief spring (33) are all made of rubber.

5. The high-voltage wiring harness isolation structure as described in claim 4, characterized in that: The cable bundle (31) includes a cylindrical part (36) and a frustum cylindrical part (37) connected from top to bottom. The lower end of the frustum cylindrical part (37) is connected to the cable bundle through hole (34) of the snap-fit ​​plate (32). An annular slot (38) is provided on the lower part of the outer peripheral wall of the frustum cylindrical part (37). The mounting hole (11) of the support plate (1) is engaged with the annular slot (38).

6. The high-voltage wiring harness isolation structure as described in claim 4, characterized in that: Four relief springs (33) are provided, and the outer surfaces of the four relief springs (33) are all arc-shaped inclined surfaces, with the lower ends inclined inward.

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