Fireproof heat-insulation steel belt sleeve applicable to protection of high-voltage wiring harness of new energy automobile

Abstract

The utility model provides a fireproof heat-insulation steel belt sleeve suitable for high-voltage wiring harness protection of a new energy automobile, belongs to the technical field of high-voltage wiring harness protection of the new energy automobile, and aims to solve the problems that a plastic material of the conventional high-voltage wiring harness sleeve is inconvenient to bend, and a rubber material is easy to soften and even burn when encountering high temperature. Comprising a protective sleeve body, a lower connecting disc, an upper connecting disc, a wire harness limiting ring, a transmission piece, a protective connecting assembly and a limiting assembly. The lower connecting disc is fixedly connected to the bottom of the protective sleeve main body; the upper connecting disc is fixedly connected to the top of the protective sleeve main body; the wire harness limiting ring is fixedly connected to the middle part of the protective sleeve main body; the two transmission pieces are connected to the left side and the right side of the lower connecting disc in a sliding mode. The protective connecting assembly is arranged in the protective sleeve main body; the limiting assembly is arranged in the wire harness limiting ring. The utility model has the advantages of safety protection, quick connection, wear reduction and the like.

Description

Technical Field

[0001] This utility model belongs to the field of high-voltage wiring harness protection technology for new energy vehicles, and more specifically, it relates to a fireproof and heat-insulating steel strip sleeve suitable for the protection of high-voltage wiring harnesses in new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety of new energy vehicles has received increasing attention. As a key component in the power transmission of new energy vehicles, the safety of high-voltage wiring harnesses directly affects the performance and safety of the entire vehicle. Therefore, a high-voltage wiring harness sleeve is needed to protect the high-voltage wiring harness. Most existing high-voltage wiring harness sleeves are made of plastic or rubber, covering the outside of the high-voltage wiring harness for insulation protection.

[0003] This utility model, with application number CN201820615444.X, relates to the technical field of fiberglass tube devices for automotive wires and cables, and particularly to a high-voltage resistant fiberglass sleeve device for new energy vehicle wiring harnesses. One end of the fiberglass sleeve body is fitted with a steel ring; both ends of a rotating shaft are rotatably connected to the left and right inner walls of a slot; one end of a pressure plate is fixedly connected to the rotating shaft; two guide rings are fixed to the outer wall of the steel ring; a first limiting ring is provided at one end of a guide rod; a second limiting ring is provided between the two guide rings; a pressure rod is provided on the body of the guide rod; the upper surface of the pressure plate is inclined; and the end of the pressure rod presses against the upper surface of the pressure plate. When using this utility model, the fiberglass sleeve device with this structure can self-lock the fiberglass sleeve onto the wire harness, preventing continuous friction between the wire harness and the fiberglass tube, thus providing maximum protection for the wire harness; at the same time, the fiberglass sleeve device is simple to assemble and disassemble, convenient to use, and does not require damage to the fixing structure during removal.

[0004] Based on the above, most existing high-voltage wiring harness sleeves are made of plastic or rubber. While plastic offers high protection, it is not easy to bend and cannot be adapted to different installation locations and routes of high-voltage wiring harnesses. Rubber, on the other hand, is prone to softening or even burning when exposed to high temperatures, making it difficult to effectively prevent the spread of flames and posing a safety hazard. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a fireproof and heat-insulating steel strip sleeve suitable for the protection of high-voltage wiring harnesses in new energy vehicles. This solves the problem that most existing high-voltage wiring harness sleeves are made of plastic or rubber. While plastic offers high protection, it is inconvenient to bend and adapt to different installation locations and routes of the high-voltage wiring harness. Rubber, on the other hand, is prone to softening or even combustion at high temperatures, failing to effectively prevent the spread of flames and posing a safety hazard.

[0006] The purpose and effectiveness of this utility model, which provides fireproof and heat-insulating steel strip sleeves for the protection of high-voltage wiring harnesses in new energy vehicles, are achieved through the following specific technical means:

[0007] A fireproof and heat-insulating steel strip sleeve suitable for high-voltage wiring harness protection in new energy vehicles includes a protective sleeve body, a lower connecting plate, an upper connecting plate, a wiring harness limiting ring, a transmission plate, a protective connection assembly, and a limiting assembly. The lower connecting plate is fixedly connected to the bottom of the protective sleeve body; the upper connecting plate is fixedly connected to the top of the protective sleeve body; the wiring harness limiting ring is fixedly connected to the middle of the protective sleeve body; two sets of transmission plates are provided, and the two sets of transmission plates are slidably connected on the left and right sides of the lower connecting plate; the protective connection assembly is disposed inside the protective sleeve body; and the limiting assembly is disposed inside the wiring harness limiting ring.

[0008] Furthermore, the protective connection assembly includes: an insulating inner liner, a steel strip layer, a heat insulation layer, and a fireproof layer. The insulating inner liner is fixedly connected to the innermost layer of the protective sleeve body; the steel strip layer is wrapped around the outer side of the insulating inner liner; the heat insulation layer is adhered to the outer side of the steel strip layer; and the fireproof layer is adhered to the outer side of the heat insulation layer. The fireproof layer, heat insulation layer, steel strip layer, and insulating inner liner together constitute the protective sleeve body.

[0009] Furthermore, the protective connection assembly also includes: a transmission button and a first return spring. The transmission button is provided in two sets, and the two sets of transmission buttons are respectively fixedly installed on the outer side of the two sets of transmission plates. The first return spring is provided in two pairs, and the two pairs of first return springs are respectively fixedly installed on the inner side of the two sets of transmission plates.

[0010] Furthermore, the protective connection assembly also includes: a limiting hook and a limiting groove. The limiting hook is provided in two sets, and the two sets of limiting hooks are respectively fixedly installed on the outer side of the two sets of transmission plates; the limiting groove is opened inside the upper connecting plate.

[0011] Furthermore, the limiting component includes: guide grooves and inclined transmission blocks. Multiple sets of guide grooves are arranged in a circumferential array inside the wire harness limiting ring. Multiple sets of inclined transmission blocks are arranged in a slidably connected inside the multiple sets of guide grooves.

[0012] Furthermore, the limiting component also includes: a second return spring and an anti-slip block. The second return spring is provided in multiple sets, with one end of each set of the second return spring fixedly connected to the inside of the wire harness limiting ring, and the other end of each set of the second return springs fixedly connected to the inside of each set of inclined transmission blocks. The anti-slip block is provided in multiple sets, with each set of anti-slip blocks fixedly installed inside the multiple sets of inclined transmission blocks.

[0013] Furthermore, the limiting component also includes: a threaded drive ring and an inclined surface drive block. The threaded drive ring is threadedly connected to the upper part of the harness limiting ring. Multiple sets of inclined surface drive blocks are provided, and the multiple sets of inclined surface drive blocks are vertically slidably connected inside multiple sets of guide grooves. The multiple sets of inclined surface drive blocks are slidably connected to the inner side of the threaded drive ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, this utility model has a protective connection component, which is formed by the coordinated combination of an insulating inner lining layer, a steel strip layer, a heat insulation layer and a fireproof layer, providing all-round protection for the high-voltage wiring harness of new energy vehicles. It also facilitates the bending and installation of the protective sleeve body, and allows for the quick docking of two or more sets of protective sleeve bodies. By pressing the transmission button, the limit hook can be easily inserted into the limit groove for quick positioning, which greatly improves the connection efficiency.

[0016] Secondly, this utility model has a limiting component. By screwing the threaded transmission ring, the inclined drive block moves and uses the inclined structure to drive the inclined transmission block to move towards the inside of the wire harness limiting ring. The movement of the anti-slip block squeezes the high-voltage wire harness, preventing the high-voltage wire harness from sliding inside the protective sleeve body during use and reducing wear on the high-voltage wire harness.

[0017] This utility model has advantages such as safety protection, quick connection, and reduced wear, providing comprehensive protection for high-voltage wiring harnesses in new energy vehicles. It also greatly improves connection efficiency and effectively reduces wear caused by slippage of the high-voltage wiring harness due to vehicle vibration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the insulating inner liner structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the upper connecting plate structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the wire harness limiting ring structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the guide groove structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the inclined plane transmission block structure of this utility model.

[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0025] 1. Protective sleeve body; 101. Insulating inner lining layer; 102. Steel strip layer; 103. Heat insulation layer; 104. Fireproof layer; 2. Lower connecting plate; 201. Transmission plate; 202. Transmission button; 203. First return spring; 204. Limit hook; 3. Upper connecting plate; 301. Limit groove; 4. Wire harness limit ring; 401. Threaded transmission ring; 402. Guide groove; 403. Second return spring; 404. Inclined transmission block; 405. Inclined drive block; 406. Anti-slip block. Detailed Implementation

[0026] 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.

[0027] Example 1:

[0028] As attached Figure 1 To be continued Figure 6 As shown:

[0029] This utility model provides a fireproof and heat-insulating steel strip sleeve suitable for the protection of high-voltage wiring harnesses in new energy vehicles, including a protective sleeve body 1, a lower connecting plate 2, an upper connecting plate 3, a wiring harness limiting ring 4, a transmission plate 201, and a protective connection assembly; the lower connecting plate 2 is fixedly connected to the bottom of the protective sleeve body 1; the upper connecting plate 3 is fixedly connected to the top of the protective sleeve body 1; the wiring harness limiting ring 4 is fixedly connected to the middle of the protective sleeve body 1; two sets of transmission plates 201 are provided, and the two sets of transmission plates 201 are slidably connected on the left and right sides of the lower connecting plate 2; the protective connection assembly is disposed inside the protective sleeve body 1.

[0030] The protective connection assembly includes: an insulating inner liner 101, a steel strip layer 102, a heat insulation layer 103, and a fireproof layer 104. The insulating inner liner 101 is fixedly connected to the innermost layer of the protective sleeve body 1; the steel strip layer 102 is wrapped around the outside of the insulating inner liner 101; the heat insulation layer 103 is adhered to the outside of the steel strip layer 102; and the fireproof layer 104 is adhered to the outside of the heat insulation layer 103. The fireproof layer 104, the heat insulation layer 103, the steel strip layer 102, and the insulating inner liner 101 together constitute the protective sleeve body 1.

[0031] The protective connection assembly also includes: a transmission button 202 and a first reset spring 203. Two sets of transmission buttons 202 are provided, and the two sets of transmission buttons 202 are respectively fixedly installed on the outer side of the two sets of transmission plates 201. Two pairs of first reset springs 203 are provided, and the two pairs of first reset springs 203 are respectively fixedly installed on the inner side of the two sets of transmission plates 201.

[0032] The protective connection assembly also includes: a limit hook 204 and a limit groove 301. Two sets of limit hooks 204 are provided, and the two sets of limit hooks 204 are respectively fixedly installed on the outer side of the two sets of transmission plates 201; the limit groove 301 is opened inside the upper connecting plate 3.

[0033] The specific usage and function of this embodiment: The protective sleeve body 1 comprises, from the inside out, an insulating inner lining layer 101, a steel strip layer 102, a heat insulation layer 103, and a fireproof layer 104. The insulating inner lining layer 101 is located at the innermost layer and is made of insulating material. It can shield electromagnetic fields and reduce interference from the high-voltage wire harness to surrounding electronic equipment. The steel strip layer 102 is tightly wound around the outside of the insulating inner lining layer 101. It is made of stainless steel strip, which combines strength and flexibility. With its good corrosion resistance and mechanical properties, it can resist external impacts and prevent the high-voltage wire harness from being scratched or squeezed. The heat insulation layer 103 is adhered to the outside of the steel strip layer 102 and is made of heat insulation materials such as ceramic fiber. It effectively blocks external heat and ensures that the high-voltage wire harness can work normally in high-temperature environments. The fireproof layer 104 is adhered to the outside of the heat insulation layer 103 and is made of fireproof materials such as fireproof silicone. At high temperatures, it forms a fire barrier to prevent the spread of flames. When it is necessary to connect two or more sets of protective sleeve bodies 1, press the transmission button 202. The transmission button 202 drives the transmission plate 201 and the limit hook 204 to move and compress the first return spring 203, inserting the limit hook 204 into the limit groove 301. Release the transmission button 202, and the first return spring 203 drives the transmission plate 201 and the limit hook 204 to return to their original positions under the elastic action, so that the limit hook 204 hooks into the limit groove 301 for quick connection and limitation.

[0034] Example 2:

[0035] Based on Example 1, such as Figures 1 to 6 As shown, it also includes: a limiting component, which is disposed inside the wire harness limiting ring 4.

[0036] The limiting component includes: a guide groove 402 and an inclined transmission block 404. Multiple sets of guide grooves 402 are arranged in a circumferential array inside the wire harness limiting ring 4. Multiple sets of inclined transmission blocks 404 are arranged in a slidably connected inside the multiple sets of guide grooves 402.

[0037] The limiting component also includes: a second return spring 403 and an anti-slip block 406. Multiple sets of the second return spring 403 are provided. One end of each set of the second return spring 403 is fixedly connected to the inside of the wire harness limiting ring 4, and the other end of each set of the second return spring 403 is fixedly connected to the inside of each set of inclined transmission blocks 404. Multiple sets of the anti-slip block 406 are provided. Each set of the anti-slip block 406 is fixedly installed inside the multiple sets of inclined transmission blocks 404.

[0038] The limiting component also includes a threaded drive ring 401 and an inclined drive block 405. The threaded drive ring 401 is threadedly connected to the upper part of the wire harness limiting ring 4. Multiple sets of inclined drive blocks 405 are provided. Multiple sets of inclined drive blocks 405 are vertically slidably connected inside multiple sets of guide grooves 402. Multiple sets of inclined drive blocks 405 are slidably connected to the inner side of the threaded drive ring 401.

[0039] The specific usage and function of this embodiment are as follows: When a high-voltage wire harness passes through the inside of the protective sleeve body 1, to prevent the high-voltage wire harness from moving and rubbing inside the protective sleeve body 1 and causing damage, the threaded transmission ring 401 is turned by screwing. The threaded transmission ring 401 drives the inclined drive block 405 to slide vertically inside the guide groove 402. The inclined drive block 405 moves and uses the inclined structure to drive the inclined transmission block 404 to move towards the inside of the wire harness limiting ring 4. The movement of the inclined transmission block 404 drives the anti-slip block 406 to move and squeeze the high-voltage wire harness and compress the second reset spring 403. The anti-slip block 406 has an anti-slip groove inside to squeeze and limit the high-voltage wire harness, preventing the high-voltage wire harness from sliding inside the protective sleeve body 1 during use.

[0040] The following points should be noted in this article:

[0041] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0042] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0043] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of a new energy vehicle, characterized in that: The fireproof and heat insulation steel tape sleeve suitable for high-voltage wire harness protection of new energy vehicles comprises a protection sleeve main body (1), a lower connecting disc (2), an upper connecting disc (3), a wire harness limiting ring (4), a transmission piece (201), a protection connecting assembly and a limiting assembly; the lower connecting disc (2) is fixedly connected at the bottom of the protection sleeve main body (1); the upper connecting disc (3) is fixedly connected at the top of the protection sleeve main body (1); the wire harness limiting ring (4) is fixedly connected at the middle of the protection sleeve main body (1); the transmission piece (201) is provided with two groups, and the two groups of transmission pieces (201) are slidingly connected at the left and right sides of the lower connecting disc (2); the protection connecting assembly is arranged inside the protection sleeve main body (1); and the limiting assembly is arranged inside the wire harness limiting ring (4).

2. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 1, characterized in that: The protection connecting assembly comprises an insulation inner lining layer (101), a steel tape layer (102), a heat insulation layer (103) and a fireproof layer (104), the insulation inner lining layer (101) is fixedly connected at the innermost layer of the protection sleeve main body (1), the steel tape layer (102) is wound outside the insulation inner lining layer (101), the heat insulation layer (103) is adhered outside the steel tape layer (102), and the fireproof layer (104) is adhered outside the heat insulation layer (103), and the fireproof layer (104), the heat insulation layer (103), the steel tape layer (102) and the insulation inner lining layer (101) jointly constitute the protection sleeve main body (1).

3. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 2, characterized in that: The protection connecting assembly further comprises a transmission button (202) and a first reset spring (203), the transmission button (202) is provided with two groups, and the two groups of transmission buttons (202) are fixedly installed outside the two groups of transmission pieces (201); and the first reset spring (203) is provided with two pairs, and the two pairs of first reset springs (203) are fixedly installed inside the two groups of transmission pieces (201).

4. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 2, characterized in that: The protection connecting assembly further comprises a limiting hook (204) and a limiting groove (301), the limiting hook (204) is provided with two groups, and the two groups of limiting hooks (204) are fixedly installed outside the two groups of transmission pieces (201); and the limiting groove (301) is arranged inside the upper connecting disc (3).

5. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 1, characterized in that: The limiting assembly comprises a guide groove (402) and an inclined surface transmission block (404), the guide groove (402) is provided with multiple groups, and the multiple groups of guide grooves (402) are circumferentially arranged inside the wire harness limiting ring (4); and the inclined surface transmission block (404) is provided with multiple groups, and the multiple groups of inclined surface transmission blocks (404) are slidingly connected inside the multiple groups of guide grooves (402).

6. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 5, characterized in that: The limiting assembly further comprises a second reset spring (403) and an anti-skid block (406), the second reset spring (403) is provided with multiple groups, one end of the multiple groups of second reset springs (403) is fixedly connected inside the wire harness limiting ring (4), the other end of the multiple groups of second reset springs (403) is fixedly connected inside the multiple groups of inclined surface transmission blocks (404), and the anti-skid block (406) is provided with multiple groups and is fixedly installed inside the multiple groups of inclined surface transmission blocks (404).

7. The fireproof and heat-insulating steel tape sleeve suitable for protecting high-voltage wiring harness of new energy vehicles according to claim 5, characterized in that: The limiting assembly further includes a threaded transmission ring (401) and an inclined surface driving block (405), the threaded transmission ring (401) is connected on the upper part of the wire harness limiting ring (4) through threads; the inclined surface driving block (405) is provided with multiple groups, multiple groups of the inclined surface driving block (405) are vertically and slidingly connected in multiple groups of the guide grooves (402), and the multiple groups of the inclined surface driving block (405) are slidingly connected on the inner side of the threaded transmission ring (401).

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