IMU sensor wire harness

Abstract

The utility model relates to the technical field of sensor wire harnesses, in particular to an IMU (Inertial Measurement Unit) sensor wire harness, which comprises a wire harness structure and a protective device arranged outside the wire harness structure, two ends of the wire harness structure are electrically connected with connectors, the wire harness structure comprises a CAN (Controller Area Network) twisted pair and a power supply twisted pair, the CAN twisted pair comprises a CAN-H wire body and a CAN-L wire body, and the CAN-H wire body and the CAN-L wire body are electrically connected with the connectors. The power supply twisted pair comprises a CAN-H wire body and a CAN-L wire body, wire body insulation protection layers are arranged outside the CAN-H wire body and the CAN-L wire body, the CAN-H wire body and the CAN-L wire body are in twisted-pair cooperation, the power supply twisted pair comprises a Bat + wire body and a ground wire body, wire body insulation protection layers are arranged outside the Bat + wire body and the ground wire body, the Bat + wire body and the ground wire body are in twisted-pair cooperation, and the Bat + wire body and the ground wire body are in twisted-pair cooperation. The exteriors of the wire body insulation protection layers of the CAN-H wire body, the CAN-L wire body, the Bat + wire body and the ground wire body are protected through the same protection structure, the two ends of the CAN-H wire body, the two ends of the CAN-L wire body, the two ends of the Bat + wire body and the two ends of the ground wire body are electrically connected with the connector, and an anti-interference device is arranged between the CAN-H wire body and the CAN-L wire body.

Description

Technical Field

[0001] This utility model relates to the field of sensor harness technology, specifically an IMU sensor harness. Background Technology

[0002] Currently used IMU sensor harnesses have poor external shock resistance, requiring secondary protection with steel tubing. However, the surface of this tubing is susceptible to sun, rain, corrosion, and chemical attack, shortening its lifespan. Furthermore, the processing of both the harness and tubing requires diverse equipment and large processing spaces, resulting in complex, inefficient, and costly manufacturing processes with high raw material consumption. Additionally, the product's resilience and shock absorption are relatively poor, making the harness susceptible to external interference and environmental influences, potentially leading to incomplete signal transmission. Utility Model Content

[0003] The purpose of this invention is to provide an IMU sensor harness.

[0004] An IMU sensor wiring harness includes a wiring harness structure and a protective device disposed outside the wiring harness structure. Both ends of the wiring harness structure are electrically connected to connectors. The wiring harness structure includes a CAN twisted pair cable and a power twisted pair cable. The CAN twisted pair cable includes a CAN-H wire and a CAN-L wire, both of which are externally provided with a wire insulation protective layer. The CAN-H and CAN-L wires are twisted together. The power twisted pair cable includes a Bat+ wire and a ground wire, both of which are externally provided with a wire insulation protective layer. The Bat+ and ground wires are twisted together. The external insulation protective layers of the CAN-H, CAN-L, Bat+, and ground wires are protected by the same protective structure. Both ends of the CAN-H, CAN-L, Bat+, and ground wires are electrically connected to connectors. An anti-interference device is provided between the CAN-H and CAN-L wires.

[0005] Furthermore, the protective structure includes a wrapping shielding layer, which is wrapped around the outside of the CAN twisted pair and the power twisted pair. Filler ropes are provided in the gaps between the CAN twisted pair and the power twisted pair, between the CAN twisted pair and the wrapping shielding layer, and between the power twisted pair and the wrapping shielding layer. An inner protective layer is provided outside the wrapping shielding layer, and an outer protective layer is provided outside the inner protective layer.

[0006] Furthermore, the anti-interference device includes an ohmic resistor, which is electrically connected to the CAN-H line and the CAN-L line.

[0007] Furthermore, the joint between the CAN-H line, CAN-L line, Bat+ line, ground line and connector is provided with an injection-molded protective shell. The injection-molded protective shell is disposed between the outer protective layer and the connector and is fixedly connected to the outer protective layer and the connector.

[0008] In summary, this utility model has the following beneficial effects:

[0009] This invention solves the problems of the original wire harness being easily affected by ambient temperature and having a short service life; it also solves the problems of poor resilience and poor shock absorption performance; it addresses the problems of poor load-bearing capacity and impact resistance; it resolves the problems of cumbersome processing technology and low processing efficiency; it eliminates the problems of strong signal reflection and intermittent ringing; it resolves the problems of impedance imbalance between CAN-H and CAN-L wires, resulting in the inability to read signals from CAN-H and CAN-L wires; and it addresses the problems of poor anti-interference performance, incomplete signal transmission, and unstable signal transmission quality in the original wire harness. Attached Figure Description

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0011] Figure 1 This is a front view of an IMU sensor harness according to the present invention;

[0012] Figure 2 This is a front sectional view of an IMU sensor harness according to the present invention;

[0013] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0014] Figure 4 for Figure 2 Cross-sectional view of BB in the middle.

[0015] In the diagram: 1 CAN-H wire, 2 CAN-L wire, 3 Bat+ wire, 4 Ground wire, 5 Wire insulation protection layer, 6 Wrapping shielding layer, 7 Filler rope, 8 Inner protective layer, 9 Outer protective layer, 10 Connector, 11 Ohm resistor, 12 Injection molded protective shell. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described as follows:

[0018] An IMU sensor wiring harness includes a wiring harness structure and a protective device disposed on the outside of the wiring harness structure. Connectors 10 are electrically connected to both ends of the wiring harness structure. The wiring harness structure includes a CAN twisted pair cable and a power twisted pair cable. The CAN twisted pair cable includes a CAN-H cable 1 and a CAN-L cable 2. Both CAN-H cable 1 and CAN-L cable 2 are provided with an insulation protective layer 5 on their exterior. The CAN-H cable 1 and CAN-L cable 2 are twisted together. The power twisted pair cable includes a Bat+ cable 3 and a ground cable 4. Both Bat+ cable 3 and ground cable 4 are provided with an insulation protective layer 5 on their exterior. Bat+ wire 3 and ground wire 4 are twisted together. The insulation protection layer 5 of CAN-H wire 1, CAN-L wire 2, Bat+ wire 3 and ground wire 4 are protected by the same protective structure. The protective structure includes a wrapping shielding layer 6, which is wrapped around the outside of the CAN twisted pair and the power twisted pair. Filler ropes 7 are provided in the gaps between the CAN twisted pair and the power twisted pair, between the CAN twisted pair and the wrapping shielding layer 6, and between the power twisted pair and the wrapping shielding layer 6. An inner protective layer 8 is provided outside the wrapping shielding layer 6, and an outer protective layer 9 is provided outside the inner protective layer 8.

[0019] In this embodiment, CAN-H wire 1, CAN-L wire 2, Bat+ wire 3, and ground wire 4 are all soft copper conductor wires. The wire insulation layer 5 is made of SR-PVC material to protect the internal core wires and insulation. The wrapping shielding layer 6 is made of aluminum foil Mylar material to shield external interference signals. Filler ropes are used to fill the gaps between the four wire insulation layers 5 and between the four wire insulation layers 5 and the wrapping shielding layer 6 to ensure the concentricity of CAN-H wire 1, CAN-L wire 2, Bat+ wire 3, and ground wire 4. The inner protective layer 8 is made of TPE material to improve the wire harness's impact resistance, temperature resistance, and sealing performance. The outer protective layer 9 is made of TPU material to improve the wire harness's impact resistance, temperature resistance, and sealing performance.

[0020] Both ends of CAN-H line 1, CAN-L line 2, Bat+ line 3 and ground line 4 are electrically connected to connector 10. An injection-molded protective shell 12 is provided on the outside of the joint between CAN-H line 1, CAN-L line 2, Bat+ line 3, ground line 4 and connector 10. The injection-molded protective shell 12 is disposed between the outer protective layer 9 and connector 10 and is fixedly connected to the outer protective layer 9 and connector 10.

[0021] In this embodiment, connector 10 is used to connect the wire harness structure and the host device, and injection molded protective shell 12 is used to protect the exposed soft copper conductor wires between the wire harness structure and connector 10.

[0022] An anti-interference device is provided between CAN-H line 1 and CAN-L line 2. The anti-interference device includes an ohmic resistor 11, which is electrically connected to CAN-H line 1 and CAN-L line 2.

[0023] In this embodiment, the ohmic resistor 11 is used to balance the impedance of CAN-H line 1 and CAN-L line 2, prevent CAN-H line 1 and CAN-L line 2 from being unable to read signals, improve the anti-interference capability of the harness, optimize the integrity and reliability of harness signal transmission, and thus improve the quality of harness signal transmission.

[0024] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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 this patent.

[0025] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

Claims

1. An IMU sensor harness, characterized in that, The device includes a wire harness structure and a protective device disposed on the outside of the wire harness structure. Both ends of the wire harness structure are electrically connected to connectors (10). The wire harness structure includes a CAN twisted pair and a power twisted pair. The CAN twisted pair includes a CAN-H wire (1) and a CAN-L wire (2). Both the CAN-H wire (1) and the CAN-L wire (2) are provided with wire insulation protection layers (5). The CAN-H wire (1) and the CAN-L wire (2) are twisted together. The power twisted pair includes a Bat+ wire (3) and a ground wire (4). The Bat+ wire (3) and the ground wire (4) are connected to each other. The outside of each wire body (4) is provided with a wire body insulation protection layer (5). The Bat+ wire body (3) and the ground wire body (4) are twisted together. The wire body insulation protection layer (5) of the CAN-H wire body (1), CAN-L wire body (2), Bat+ wire body (3) and ground wire body (4) are protected by the same protective structure. Both ends of the CAN-H wire body (1), CAN-L wire body (2), Bat+ wire body (3) and ground wire body (4) are electrically connected to the connector (10). An anti-interference device is provided between the CAN-H wire body (1) and the CAN-L wire body (2).

2. The IMU sensor harness as described in claim 1, characterized in that, The protective structure includes a wrapping shielding layer (6), which is wrapped around the outside of the CAN twisted pair and the power twisted pair. Filler ropes (7) are provided in the gaps between the CAN twisted pair and the power twisted pair, between the CAN twisted pair and the wrapping shielding layer (6), and between the power twisted pair and the wrapping shielding layer (6). An inner protective layer (8) is provided outside the wrapping shielding layer (6), and an outer protective layer (9) is provided outside the inner protective layer (8).

3. The IMU sensor harness as described in claim 2, characterized in that, The anti-interference device includes an ohmic resistor (11), which is electrically connected to the CAN-H line (1) and the CAN-L line (2).

4. The IMU sensor harness as described in claim 3, characterized in that, The CAN-H line (1), CAN-L line (2), Bat+ line (3), ground line (4) and connector (10) are provided with an injection-molded protective shell (12) on the outside of the joint. The injection-molded protective shell (12) is disposed between the outer protective layer (9) and the connector (10) and is fixedly connected to the outer protective layer (9) and the connector (10).

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