A new energy vehicle high-voltage wire harness is provided with a protection plate device

Abstract

The application relates to a new energy automobile high-voltage wire harness guard plate device, which comprises oppositely arranged first and second guard plates, a connector arranged in a cavity formed by the first and second guard plates, a wire harness connected to the connector, a plurality of mounting pieces arranged on the connector and connected with the first and second guard plates, and a fastening assembly used for fixedly connecting the first and second guard plates. A plurality of cable tie fixing holes are arranged at the end of the second guard plate, and the cable tie fixing holes are used for penetrating cable ties to bundle and fix the wire harness. The application has the effect of improving the connection stability of the new energy automobile high-voltage system in the motor non-fixed point scene.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a protective plate device for high-voltage wiring harnesses in new energy vehicles. Background Technology

[0002] In the power system of new energy vehicles, high-voltage wiring harnesses serve as a carrier for high-voltage electrical energy transmission. Typically, high-voltage wiring harnesses are connected to the motor via connectors. To prevent vibrations generated during motor operation from adversely affecting the connection structure between the connector and the wiring harness, existing technologies generally include a first fixing point on the wiring harness at the end of the connector, and this fixing point is then mounted on the motor housing.

[0003] However, in actual motor structure design, some motors, due to their spatial layout or housing structure characteristics, cannot provide the aforementioned fixing points for the wiring harness at the tail of the high-voltage wiring harness connector. In such scenarios, the vibration generated by the motor operation will directly cause the connector and the wiring harness at its tail to vibrate together. However, due to the lack of fixing points to constrain the wiring harness, the force generated by the vibration cannot be effectively transferred and can only act directly on the connection root between the connector and the wiring harness.

[0004] Long-term vibration can cause a continuous decline in the connection performance between the plug and the wiring harness, resulting in problems such as loose connection and reduced transmission efficiency. It may also cause wear on the insulation layer of the wire at the connection root, leading to safety hazards such as high-voltage leakage and short circuits. This seriously reduces the connection stability of the high-voltage system of new energy vehicles, resulting in a decrease in the safety of the high-voltage system and obvious deficiencies. Utility Model Content

[0005] To improve the connection stability of high-voltage systems in new energy vehicles in scenarios where the motor has no fixed point, this application provides a protective plate device for high-voltage wiring harnesses in new energy vehicles.

[0006] The protective plate device for high-voltage wiring harnesses in new energy vehicles provided in this application adopts the following technical solution: A protective plate device for high-voltage wiring harnesses in new energy vehicles includes a first protective plate and a second protective plate arranged opposite to each other. A connector is disposed within a cavity formed by the first protective plate and the second protective plate. The connector is connected to a wiring harness. The connector is provided with multiple mounting parts that connect to the first protective plate and the second protective plate. The first protective plate and the second protective plate are fixedly connected by fastening components. The end of the second protective plate has multiple cable tie fixing holes for passing cable ties through to bind and fix the wiring harness.

[0007] By adopting the above technical solution, when assembling the high-voltage wiring harness system, firstly, multiple mounting components are used to install the first and second protective plates on the outer surface of the connector. Then, fastening components are used to connect the first and second protective plates. Finally, cable ties are inserted through the cable tie fixing holes to bind and fix the wiring harness. In this way, the connector, the first protective plate, the second protective plate and the wiring harness form an integrated rigid connection structure. When the motor vibrates during operation, the connector, the first protective plate, the second protective plate and the wiring harness maintain the same vibration state. The force generated by the vibration is distributed to the overall structure of the protective plate and the wiring harness, rather than being concentrated on the connection root of the plug and the wiring harness. This improves the connection stability and operational safety of the high-voltage system of new energy vehicles in scenarios where the motor has no fixed point.

[0008] Optionally, the mounting component is a wedge-shaped locking block disposed on the connector, and the first guard plate and the second guard plate are provided with locking grooves that engage with the locking block.

[0009] By adopting the above technical solution, during installation, the slot is aligned with the locking block to attach the first and second protective plates to the outer surface of the connector. Then, the first and second protective plates are connected by a fastening assembly. With the connection of the fastening assembly, the vertical displacement of the connector and the protective plates is restricted. When the protective plates are vibrated and tend to detach from the connector, the contact surface between the locking block and the slot will generate a reverse frictional force, which will hinder the relative displacement between the two and ensure that the protective plates and the connector always maintain a stable and rigid connection.

[0010] Optionally, the fastening assembly includes a first connecting plate and a second connecting plate respectively disposed on the first guard plate or the second guard plate. The first connecting plate has a threaded groove, and the second connecting plate has a waist-shaped groove. A locking bolt is threaded into the threaded groove, and the end of the locking bolt extends into the waist-shaped groove and is threaded into a locking nut.

[0011] By adopting the above technical solution, when connecting the first and second protective plates, the worker screws the locking bolt into the threaded groove. When the bolt head of the locking bolt abuts against the first connecting plate, the end of its screw passes through the waist-shaped groove of the second connecting plate. At this time, by tightening the locking nut, the first and second connecting plates are tightly fitted together, preventing them from loosening or relative displacement under motor vibration, thereby maintaining the rigidity and stability of the connector and the integrated structure of the first and second protective plates.

[0012] Optionally, the first guard plate and the second guard plate are provided with positioning components. When the first guard plate and the second guard plate are positioned by the positioning components, the threaded groove and the waist-shaped groove are connected.

[0013] By adopting the above technical solution, when assembling the first guard plate and the second guard plate, the worker first uses the positioning component to pre-fix the relative positions of the first guard plate and the second guard plate to ensure that the threaded groove and the waist groove are aligned and connected. At the same time, when tightening the locking bolts and nuts, the first guard plate and the second guard plate can always maintain the alignment state, ensuring that the clamping force is evenly applied to the mating surface of the guard plate, and avoiding deformation of the guard plate or loosening of the connection due to uneven local force.

[0014] Optionally, the positioning component includes a plug-in block disposed on the first guard plate, and a plug-in frame disposed on the second guard plate for plugging into the plug-in block. A limit block is disposed on the plug-in frame, and a hook block is disposed on the plug-in block for hooking into the limit block. Both the plug-in block and the hook block are made of elastic material, and the elastic force direction is towards the plug-in frame, so that the hook block hooks onto the limit block.

[0015] By adopting the above technical solution, during the initial positioning, the worker presses the plug-in block towards the first guard plate to insert it into the plug-in frame. After assembly, the force on the plug-in block is released, and the plug-in block and hook block move towards the plug-in frame under their own elastic force. At this time, the hook block automatically hooks the limit block to achieve automatic locking, thus completing the rapid pre-fixing of the first guard plate and the second guard plate. The positioning component allows the worker to quickly unlock the fixed part by simply pressing and prying the plug-in block, simplifying the manual operation steps and improving the efficiency of pre-positioning.

[0016] Optionally, the end of the second guard plate is provided with a supporting arc plate, and a plurality of the cable tie fixing holes are formed on the surface of the supporting arc plate.

[0017] By adopting the above technical solution, the supporting arc plate can adapt to the contour of the wire harness, provide circumferential support for the wire harness, and prevent the wire harness from sagging or shifting locally due to gravity or vibration.

[0018] Optionally, the inner surfaces of the first and second protective plates are provided with a plurality of annular protrusions, which abut against the outer surface of the wire harness.

[0019] By adopting the above technical solution, the annular protrusion abuts against the outer surface of the wire harness and can limit the cable from multiple radial positions, avoiding excessive gaps between the wire harness and the protective plate due to displacement. At the same time, the annular protrusion can transmit the vibration force of the protective plate to the wire harness through multi-point contact, further limiting the radial sway of the wire harness relative to the protective plate and enhancing the synchronous vibration characteristics of the integrated structure of connector, protective plate and wire harness.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. This application forms an integrated rigid connection structure with the connector, the first protective plate, the second protective plate and the wire harness. When the motor vibrates during operation, the connector, the first protective plate, the second protective plate and the wire harness maintain the same vibration state. The force generated by the vibration is distributed to the overall structure of the protective plate and the wire harness, rather than being concentrated on the connection root of the plug and the wire harness, thereby improving the connection stability and operational safety of the high voltage system of new energy vehicles in the scenario where the motor has no fixed point. 2. By setting up a positioning component, when assembling the first and second guard plates, the worker first uses the positioning component to pre-fix the relative positions of the first and second guard plates, ensuring that the threaded groove and the waist-shaped groove are aligned and connected. At the same time, when tightening the locking bolts and nuts, the first and second guard plates can always maintain an aligned state, ensuring that the clamping force is evenly applied to the mating surface of the guard plates, and avoiding deformation of the guard plates or loosening of the connection due to uneven local force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this application.

[0022] Figure 2 This is an exploded view of the area between the second protective plate and the connector in an embodiment of this application.

[0023] Figure 3 This is an exploded view of the first and second protective plates in an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. First protective plate; 101. Slot; 2. Second protective plate; 21. Supporting arc plate; 211. Cable tie fixing hole; 22. Annular protrusion; 3. Connector; 31. Mounting component; 311. Locking block; 4. Wire harness; 5. Fastening assembly; 51. First connecting plate; 52. Second connecting plate; 521. Waist-shaped groove; 53. Locking bolt; 54. Locking nut; 6. Positioning assembly; 61. Insertion block; 62. Insertion frame; 63. Limiting block; 64. Hook block. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This application discloses a protective plate device for high-voltage wiring harnesses in new energy vehicles.

[0027] Reference Figure 1 and Figure 2 A protective plate device for high-voltage wiring harnesses in new energy vehicles includes a first protective plate 1 and a second protective plate 2 arranged opposite to each other. A connector 3 is installed in the cavity formed by the first protective plate 1 and the second protective plate 2. A wiring harness 4 is connected to the connector 3 to realize the transmission of high-voltage current. The structure and principle of the connector 3 and the wiring harness 4 are existing technologies and will not be described in detail in this embodiment.

[0028] Reference Figure 1 and Figure 2 The connector 3 is equipped with multiple mounting parts 31 that are connected to the first protective plate 1 and the second protective plate 2. In this embodiment, two mounting parts 31 are provided on the upper and lower surfaces of the connector 3. The mounting parts 31 are locking blocks 311 installed on the outer surface of the connector 3. Each mounting part 31 is provided with three locking blocks 311. The locking blocks 311 are wedge-shaped. The first protective plate 1 and the second protective plate 2 are provided with slots 101 that correspond one-to-one with the multiple mounting parts 31. The locking blocks 311 are engaged in the corresponding slots 101.

[0029] Reference Figure 1 and Figure 2 The two opposite ends of the first guard plate 1 and the second guard plate 2 are fixedly connected by a fastening assembly 5. The fastening assembly 5 includes a first connecting plate 51 and a second connecting plate 52 respectively fixedly connected to the first guard plate 1 or the second guard plate 2. The first connecting plate 51 has a threaded groove (not shown in the figure), and the second connecting plate 52 has a waist-shaped groove 521 communicating with the threaded groove. The cross-sectional area of ​​the waist-shaped groove 521 is larger than that of the threaded groove. A locking bolt 53 is threadedly connected inside the threaded groove. The end of the locking bolt 53 extends into the waist-shaped groove 521 and is threadedly connected to a locking nut 54. The locking nut 54 abuts against the surface of the second connecting plate 52.

[0030] Reference Figure 2 and Figure 3 A supporting arc plate 21 is installed on the lower end face of the second arc plate. The supporting arc plate 21 has multiple cable tie fixing holes 211 along the width direction. The cable tie fixing holes 211 are used to pass cable ties through to bind and fix the wire harness 4. Multiple annular protrusions 22 are fixedly connected to the inner surfaces of the first guard plate 1 and the second guard plate 2 along the length direction. The annular protrusions 22 are all made of elastic material. The annular protrusions 22 abut against the outer surface of the wire harness 4. The annular protrusions 22 transmit the vibration force of the second guard plate 2 to the wire harness 4 through multiple contact points, further limiting the radial sway of the wire harness 4 relative to the first guard plate 1 and the second guard plate 2, and strengthening the synchronous vibration characteristics of the integrated structure of connector 3, first guard plate 1, second guard plate 2 and wire harness 4.

[0031] When assembling the high-voltage wiring harness system, firstly, the slot 101 is aligned with the slot block 311, and the first protective plate 1 and the second protective plate 2 are respectively attached to the upper and lower surfaces of the connector 3. Then, the worker screws the locking bolt 53 into the threaded groove. When the bolt head of the locking bolt 53 abuts against the first connecting plate 51, its screw end passes through the waist-shaped groove 521 of the second connecting plate 52. At this time, the locking nut 54 is tightened to make the first connecting plate 51 and the second connecting plate 52 fit tightly. Finally, the wiring harness 4 is bound and fixed by inserting a cable tie through the cable tie fixing hole 211. In this way, the connector 3, the first protective plate 1, the second protective plate 2 and the wiring harness 4 form an integrated rigid connection structure. When the motor vibrates during operation, the connector 3, the first protective plate 1, the second protective plate 2 and the wiring harness 4 maintain the same vibration state. Thus, the force generated by the vibration is distributed to the overall structure of the protective plate and the wiring harness 4, rather than concentrated on the connection root of the connector 3 and the wiring harness 4, thereby improving the connection stability and operational safety of the high-voltage system of new energy vehicles in scenarios where the motor has no fixed point.

[0032] Reference Figure 1 and Figure 3 Positioning components 6 are provided at both ends of the first guard plate 1 and the second guard plate 2 along the width direction. After the first guard plate 1 and the second guard plate 2 are initially connected by the positioning components 6, the threaded groove and the waist-shaped groove 521 are connected. The positioning components 6 include a plug-in block 61 fixedly connected to the first guard plate 1. A plug-in frame 62 that plugs into and cooperates with the plug-in block 61 is connected to the outer surface of the second guard plate 2. A limiting block 63 is fixedly connected to the plug-in frame 62. The limiting block 63 has an inclination towards the outer surface of the second guard plate 2. A hook block 64 that hooks into and cooperates with the limiting block 63 is integrally formed on the plug-in block 61. Both the plug-in block 61 and the hook block 64 are made of elastic material, and the elastic force is directed towards the plug-in frame 62, so that the hook block 64 hooks into the limiting block 63.

[0033] Before using the fastening assembly 5 to fix the first guard plate 1 and the second guard plate 2, the worker presses the plug block 61 toward the first guard plate 1 so that it is inserted into the plug frame 62. After the assembly is in place, the force on the plug block 61 is released. The plug block 61 and the hook block 64 move toward the plug frame 62 under their own elastic force. At this time, the hook block 64 automatically hooks the limit block 63 to achieve automatic locking, completing the rapid pre-fixing of the first guard plate 1 and the second guard plate 2, ensuring that the threaded groove and the waist groove 521 are aligned and connected. At the same time, when tightening the locking bolt 53 and nut later, the first guard plate 1 and the second guard plate 2 can always maintain the alignment state, ensuring that the clamping force is evenly applied to the mating surface of the first guard plate 1 and the second guard plate 2, avoiding deformation or loosening of the first guard plate 1 and the second guard plate 2 due to uneven local force. During disassembly, first unscrew the locking nut 54 and then pull the locking bolt 53 out of the threaded groove and the waist-shaped groove 521. Next, the worker presses the plug block 61 toward the second guard plate 2 to disengage the hook block 64 from the limit block 63. Finally, while maintaining the pressing action, the first guard plate 1 is pushed off the connector 3, thus achieving the disassembly of the entire structure.

[0034] The implementation principle of the protective plate device for high-voltage wiring harnesses of new energy vehicles in this embodiment is as follows: When assembling the high-voltage wiring harness system, firstly, the slot 101 is aligned with the slot block 311, and the first protective plate 1 and the second protective plate 2 are respectively attached to the upper and lower surfaces of the connector 3. Then, the worker screws the locking bolt 53 into the threaded groove. When the bolt head of the locking bolt 53 abuts against the first connecting plate 51, its screw end passes through the waist-shaped groove 521 of the second connecting plate 52. At this time, the locking nut 54 is tightened to make the first connecting plate 51 and the second connecting plate 52 fit tightly together. Finally, the locking nut 54 is tightened to ensure a tight fit between the first connecting plate 51 and the second connecting plate 52. Cable ties are inserted through the cable tie fixing holes 211 to bind and fix the wire harness 4. This makes the connector 3, the first protective plate 1, the second protective plate 2 and the wire harness 4 form an integrated rigid connection structure. When the motor vibrates during operation, the connector 3, the first protective plate 1, the second protective plate 2 and the wire harness 4 maintain the same vibration state. As a result, the force generated by the vibration is distributed to the overall structure of the protective plate and the wire harness 4, rather than being concentrated on the connection root of the connector 3 and the wire harness 4. This improves the connection stability and operational safety of the high voltage system of new energy vehicles in scenarios where the motor has no fixed point.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective plate device for high-voltage wiring harnesses in new energy vehicles, characterized in that, The device includes a first protective plate (1) and a second protective plate (2) arranged opposite to each other. A connector (3) is provided in the cavity formed by the first protective plate (1) and the second protective plate (2). The connector (3) is connected to a wire harness (4). The connector (3) is provided with a plurality of mounting parts (31) that are connected to the first protective plate (1) and the second protective plate (2). The first protective plate (1) and the second protective plate (2) are fixedly connected by a fastening assembly (5). The end of the second protective plate (2) is provided with a plurality of cable tie fixing holes (211). The cable tie fixing holes (211) are used to pass cable ties through to bind and fix the wire harness (4).

2. The protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 1, characterized in that, The mounting component (31) is a wedge-shaped locking block (311) provided on the connector (3), and the first guard plate (1) and the second guard plate (2) are provided with locking grooves (101) that engage with the locking block (311).

3. The protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 1, characterized in that, The fastening assembly (5) includes a first connecting plate (51) and a second connecting plate (52) respectively disposed on the first guard plate (1) or the second guard plate (2). The first connecting plate (51) has a threaded groove, and the second connecting plate (52) has a waist-shaped groove (521). A locking bolt (53) is threadedly connected inside the threaded groove. The end of the locking bolt (53) extends into the waist-shaped groove (521) and is threadedly connected to a locking nut (54).

4. The protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 3, characterized in that, The first guard plate (1) and the second guard plate (2) are provided with positioning components (6). When the first guard plate (1) and the second guard plate (2) are positioned by the positioning components (6), the threaded groove and the waist-shaped groove (521) are connected.

5. A protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 4, characterized in that, The positioning component (6) includes a plug-in block (61) disposed on the first guard plate (1), and a plug-in frame (62) disposed on the second guard plate (2) for plugging into the plug-in block (61). A limit block (63) is disposed on the plug-in frame (62), and a hook block (64) is disposed on the plug-in block (61) for hooking into the limit block (63). Both the plug-in block (61) and the hook block (64) are made of elastic material, and the elastic force direction is towards the plug-in frame (62), so that the hook block (64) hooks onto the limit block (63).

6. A protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 1, characterized in that, The end of the second guard plate (2) is provided with a supporting arc plate (21), and a plurality of the cable tie fixing holes (211) are formed on the surface of the supporting arc plate (21).

7. A protective plate device for high-voltage wiring harnesses in new energy vehicles according to claim 1, characterized in that, The inner surfaces of the first guard plate (1) and the second guard plate (2) are provided with a plurality of annular protrusions (22), which abut against the outer surface of the wire harness (4).

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