Wire harness extension device

Abstract

The utility model provides a wire harness extension device, which is used for extending a cut wire harness to be connected, and comprises a shell, an extension wire harness and a rotating shaft, the rotating shaft is rotatably arranged in the shell, the middle section of the extension wire harness is fixed in the middle of the rotating shaft, the two sections of the extension wire harness are respectively wound on the two sides of the rotating shaft, and the spiral directions are the same. The shell is provided with wire holes for the two ends of the extension wire harness to extend out, and the two sections of the extension wire harness are connected with the two sections of the wire harness to be connected through wiring terminals respectively. During installation, the two ends of a wire harness to be connected are firstly connected to the connecting interfaces, then the wire harness to be connected is cut off, then the shell is fixed to the carrier, the extension wire harness with the needed length is pulled out, the shell and the carrier are connected through the wiring terminal, and finally the extension wire harness is fixed through the pressing mechanism. Compared with an existing extension mode, the device can be used for adaptively increasing the length according to the actually needed extension harness length, the universality is high, and advanced measurement is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to a wiring harness extension device. Background Art

[0002] With the rapid development of new energy vehicles, their market share continues to rise. High-voltage wiring harnesses, the nerves of new energy vehicles, are the driving force behind these vehicles. Major wiring harness manufacturers are relentlessly increasing their production capacity, leading to an oversupply of these products. Many connectors in the remaining wiring harnesses are reusable, but their cable lengths are insufficient to meet current product demands. Consequently, many of these remaining harnesses cannot be remanufactured, increasing costs.

[0003] The current method for extending wire harnesses involves cutting the standby harness, then cutting a section of the harness to the desired extension length. The standby harness and the extension harness are then connected via terminal blocks. However, because the required extension length varies depending on the vehicle's location and needs, constant measurement and cutting of the harness is very inconvenient. A system that could adaptively increase the length of the extension harness based on the desired extension length could solve this problem. This is the basis for the development of this solution. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a wire harness extension device, which solves the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wire harness extension device, used to extend the cut wire harness to be connected, including a shell, an extension wire harness, and a rotating shaft. The rotating shaft is rotatably arranged in the shell, and the middle section of the extension wire harness is fixed to the middle of the rotating shaft. The two sections of the extension wire harness are respectively wound on both sides of the rotating shaft, and the spiral direction is the same. The shell is provided with wire holes for the two ends of the extension wire harness to extend out, and the two sections of the extension wire harness are respectively connected to the two sections of the wire harness to be connected through wiring terminals.

[0008] Preferably, two guiding mechanisms for guiding two sections of extended wiring harness are provided in the housing.

[0009] Preferably, the guide mechanism comprises a support groove, in which at least one guide wheel is rotatably provided along the length direction thereof, and an outer ring of the guide wheel is provided with a groove ring adapted to the extension harness.

[0010] Preferably, a pressing mechanism for pressing the extension harness onto the guide wheel is further provided in the housing.

[0011] Preferably, the clamping mechanism includes a pressure plate, a pressure strip, and a lifting and adjusting component. The pressure strip is arranged at the bottom of the pressure plate and corresponds to the guide wheel above and below. The lifting and adjusting component is used to control the lifting and lowering of the pressure plate. The bottom of the pressure plate and the top of the support groove are respectively provided with tooth one and tooth two that can engage with each other.

[0012] Preferably, the lifting and lowering adjustment assembly includes an adjusting screw, a guide rod, and a linkage plate. The pressure plate is arranged on the linkage plate. The guide rod is fixedly arranged in the shell. The linkage plate is provided with a guide hole for the guide rod to pass through. The upper section of the adjusting screw is pivotally connected to the shell through a bearing seat, and the lower section passes through the linkage plate and is threadedly connected to it.

[0013] Preferably, a knob coaxially connected to the rotating shaft is provided on the outside of the shell.

[0014] (3) Beneficial effects

[0015] The utility model provides a wire harness extension device, which has the following beneficial effects:

[0016] 1. When installing the wire harness extension device, first connect the two ends of the wire harness to be connected to the connection interface, then cut the wire harness to be connected, and then fix the shell on the carrier. Pull out the extended wire harness of the required length, connect the two through the wiring terminal, and finally fix the extended wire harness through the clamping mechanism. Compared with the existing extension method, this device can increase the length of the extended wire harness according to the actual required length, has strong versatility, and does not require advance measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the external axonometric drawing of the present utility model;

[0018] Figure 2 This is an anatomical diagram of the side of the shell of the present utility model;

[0019] Figure 3 This is a schematic diagram of the interior of the shell of the present invention.

[0020] In the figure: 1 housing, 2 wiring harness, 3 extension harness, 4 wiring terminal, 5 rotating shaft, 6 wire hole, 7 knob, 8 support slot, 9 guide wheel, 10 pressure plate, 11 pressure strip, 12 tooth 1, 13 tooth 2, 14 linkage plate, 15 adjustment screw, 16 guide rod. DETAILED DESCRIPTION

[0021] The present invention provides a wire harness extension device. Figure 1-3 As shown, it is used to extend the cut wiring harness 2. The wiring harness extension device includes a housing 1, an extension wiring harness 3, and a rotating shaft 5. The outside of the housing 1 can be provided with a connection hole fixed on a vehicle carrier, and the housing 1 can be fixed on the carrier.

[0022] like Figure 1 As shown, the rotating shaft 5 is rotatably arranged in the housing 1, and a knob 7 coaxially connected to the rotating shaft 5 is arranged outside the housing 1.

[0023] The middle section of the extension harness 3 is fixed to the middle of the shaft 5, and the two sections of the extension harness 3 are respectively wound on both sides of the shaft 5 with the same spiral direction. The knob 7 is used to control the rotation of the shaft 5, thereby retracting and extending the length of the extension harness 3 on the shaft 5.

[0024] The housing 1 is provided with wire holes 6 through which the two ends of the extension harness 3 can extend. The two sections of the extension harness 3 are connected to the two sections of the wiring harness 2 through wiring terminals 4. The wiring terminals 4 are conductor sleeves. When connecting, the wiring terminals 4 and the insulating sleeve are first inserted into the wiring harness 2. After the extension harness 3 and the wiring harness 2 are connected, the wiring terminals 4 are pressed tightly, and the insulating sleeve is then slid over the wiring terminals 4 and thermoformed.

[0025] In order to prevent the extension harness 3 from being stuck in the housing 1 and unable to extend, Figure 2 As shown, two guiding mechanisms for guiding two sections of extended wire harnesses 3 are provided in the housing 1 .

[0026] The guide mechanism includes a support groove 8, within which at least one guide wheel 9 is rotatably positioned along its length. In this embodiment, two guide wheels 9 are provided. The tops of the guide wheels 9 are tangential to the end where the extension harness 3 exits the rotating shaft 4, allowing the extension harness 3 to exit horizontally from the rotating shaft 4. The outer ring of the guide wheel 9 is provided with a grooved ring that mates with the extension harness 3. The grooved ring is slightly larger than the diameter of the extension harness 3, allowing the extension harness 3 to be embedded within the grooved ring and prevent it from slipping off the guide wheel 9.

[0027] A pressing mechanism for pressing the extension harness 3 onto the guide wheel 9 is also provided in the housing 1. When the extended length of the extension harness 3 is determined, the extension harness 3 is fixed onto the guide wheel 9 by the pressing mechanism.

[0028] like Figure 3 As shown, the clamping mechanism includes a pressure plate 10, a pressure strip 11, and a lifting and adjusting assembly. The pressure strip 11 is arranged at the bottom of the pressure plate 10 and corresponds to the guide wheel 9 above and below. The side of the pressure strip 11 corresponding to the guide wheel 9 is semicircular, and the diameter of the semicircle is slightly smaller than the diameter of the groove ring of the guide wheel 9.

[0029] The lift adjustment assembly controls the lifting and lowering of the pressure plate 10. The bottom of the pressure plate 10 and the top of the support slot 8 are respectively provided with interlocking teeth 12 and 13. When the pressure bar 11 presses the extension harness 3 onto the guide wheel 9, teeth 12 and 13 interlock, preventing the extension harness 3 from loosening or shifting.

[0030] like Figure 3As shown, the lift adjustment assembly includes an adjustment screw 15, a guide rod 16, and a linkage plate 14. The pressure plate 10 is mounted on the linkage plate 14. The guide rod 16 is fixedly mounted within the housing 1. The linkage plate 14 is provided with a guide hole for the guide rod 16 to pass through. The upper section of the adjustment screw 15 is pivotally connected to the housing 1 via a bearing seat, while the lower section passes through the linkage plate 14 and is threadedly connected thereto. The top end of the adjustment screw 15 extends outside the housing 1. By rotating the adjustment screw 15, the lifting and lowering of the linkage plate 14 is controlled, thereby adjusting the lifting and lowering of the pressure strip 11.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire harness extension device for extending a cut wire harness (2), characterized in that: The invention comprises a housing (1), an extension harness (3), and a rotating shaft (5); the rotating shaft (5) is rotatably arranged in the housing (1); the middle section of the extension harness (3) is fixed to the middle of the rotating shaft (5); the two sections of the extension harness (3) are respectively wound on both sides of the rotating shaft (5) and have the same spiral direction; the housing (1) is provided with wire holes (6) for the two ends of the extension harness (3) to extend; the two sections of the extension harness (3) are respectively connected to the two sections of the harness to be connected (2) via connection terminals (4).

2. A wire harness extension device according to claim 1, characterized in that: Two guide mechanisms for guiding two sections of extended wire harnesses (3) are provided in the housing (1).

3. The wire harness extension device according to claim 2, characterized in that: The guide mechanism comprises a support groove (8), in which at least one guide wheel (9) is rotatably arranged along its length direction, and an outer ring of the guide wheel (9) is provided with a groove ring adapted to the extension harness (3).

4. The wire harness extension device according to claim 3, characterized in that: A pressing mechanism for pressing the extension harness (3) onto the guide wheel (9) is also provided in the housing (1).

5. The wire harness extension device according to claim 4, characterized in that: The clamping mechanism comprises a pressing plate (10), a pressure strip (11), and a lifting and adjusting assembly. The pressure strip (11) is arranged at the bottom of the pressing plate (10) and corresponds to the guide wheel (9) up and down. The lifting and adjusting assembly is used to control the lifting and lowering of the pressing plate (10). The bottom of the pressing plate (10) and the top of the supporting groove (8) are respectively provided with a tooth 1 (12) and a tooth 2 (13) that can bite into each other.

6. The wire harness extension device according to claim 5, characterized in that: The lifting and lowering adjustment assembly comprises an adjusting screw (15), a guide rod (16), and a linkage plate (14); the pressing plate (10) is arranged on the linkage plate (14); the guide rod (16) is fixedly arranged in the housing (1); a guide hole for the guide rod (16) to pass through is provided on the linkage plate (14); the upper section of the adjusting screw (15) is pivotally connected to the housing (1) through a bearing seat; the lower section passes through the linkage plate (14) and is threadedly connected thereto.

7. The wire harness extension device according to claim 1, characterized in that: A knob (7) coaxially connected to the rotating shaft (5) is provided on the outside of the housing (1).

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