Segmented wire harness structure for AMT (automated mechanical transmission)

Abstract

The utility model provides a segmented wire harness structure for an AMT (automated mechanical transmission), which aims to solve the technical problems of poor wire harness flexibility and high production and after-sale cost of the existing AMT. Comprising a transmission TCU connector, a basic wire harness body, an expansion connector female end, an intermediate shaft rotating speed sensor connector, a clutch executing mechanism connector and an output shaft rotating speed sensor connector. One end of the basic wire harness body is connected with a transmission TCU connector; and the expansion connector female end, the intermediate shaft rotating speed sensor connector, the clutch actuating mechanism connector and the output shaft rotating speed sensor connector are respectively connected to the other end of the basic wire harness body. According to the utility model, free combination can be realized according to different types of AMT transmissions, all functional requirements of the AMT transmissions can be met, the interchangeability of various types of wire harnesses can be improved, and the types of the wire harnesses are greatly reduced, so that the production efficiency is improved, and the production cost and the after-sales cost are reduced.

Description

Technical Field

[0001] This utility model relates to a wiring harness structure, specifically a segmented wiring harness structure for an AMT transmission. Background Technology

[0002] Currently, my country's commercial vehicle market has entered an era of fierce competition for existing market share, with limited market space and intense competition. Against this backdrop, the intelligent development of commercial vehicles is progressing rapidly, and the market share of AMT (Automated Manual Transmission) transmissions in commercial vehicles is increasing year by year. As AMT transmissions gradually encroach on the market share of traditional manual transmissions, price wars among transmission manufacturers in the AMT transmission field are intensifying, making the competitive environment increasingly fierce and complex. In this context, the manufacturing cost, production efficiency, maintenance cost, and ease of maintenance of AMT transmissions become particularly important. Currently, the wiring harnesses of existing commercial vehicle AMT transmissions generally use a single, integrated harness, and different types of AMT transmissions require different harnesses, resulting in poor harness flexibility. For example, AMT transmissions require different wiring harnesses depending on whether a retarder or a power take-off (PTO) is needed. Furthermore, different types of PTOs and retarders also require different wiring harnesses. The wide variety of wiring harnesses causes the following problems: 1) AMT transmission manufacturers must store sufficient quantities of various wiring harness assemblies, resulting in high inventory costs; 2) During production, various types of AMT transmissions are manufactured on the same production line, but the wiring harness installation processes differ, leading to low factory production efficiency; 3) In the aftermarket, to ensure timely after-sales service, each region must stock all types of AMT transmission wiring harnesses, resulting in significant capital tied up in after-sales services.

[0003] For example, CN221067981U discloses an integrated AMT adapter harness for commercial vehicles. It uses a modular AMT gearbox end plug to connect to the vehicle end plug, and the other end is electrically connected to the integrated AMT vehicle end plug. The integrated AMT vehicle end plug is connected to the integrated AMT TCU end plug. The connection is achieved through the wire harness, and the wire harness is fixed with a bundling device to avoid changes to the chassis wiring harness. In practical applications, the wire harness adopts a bundling method, which is not very flexible. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of poor flexibility and high production and after-sales costs of existing AMT transmission wiring harnesses. It proposes a segmented wiring harness structure for AMT transmissions, which can be freely combined according to different AMT transmission housing types. This not only meets all the functional requirements of AMT transmissions, but also improves the interchangeability of various types of wiring harnesses, greatly reduces the types of wiring harnesses, thereby improving production efficiency and reducing production and after-sales costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A segmented wiring harness structure for an AMT transmission is characterized by comprising a transmission TCU connector, a basic wiring harness body, an expansion connector female terminal, an intermediate shaft speed sensor connector, a clutch actuator connector, and an output shaft speed sensor connector; one end of the basic wiring harness body is connected to the transmission TCU connector; the expansion connector female terminal, the intermediate shaft speed sensor connector, the clutch actuator connector, and the output shaft speed sensor connector are respectively connected to the other end of the basic wiring harness body; the clutch actuator connector, the output shaft speed sensor connector, and the intermediate shaft speed sensor connector respectively transmit clutch displacement signal, output shaft speed signal, and intermediate shaft speed signal to the transmission TCU connector; the expansion connector female terminal is used to connect a power take-off and / or a retarder.

[0007] Furthermore, it also includes a male extension connector, which is connected to a female extension connector and is used to connect a power take-off and / or a retarder.

[0008] Furthermore, it also includes an extension harness body and an extension harness accessory plug; one end of the extension harness body is connected to the male terminal of the extension connector, and the other end is connected to the extension harness accessory plug, which is used to connect the power take-off and / or the retarder's sensor and / or solenoid valve.

[0009] Furthermore, a waterproof plug is connected to the female end of the expansion connector to prevent water from entering the female end of the expansion connector when the expansion harness is not needed.

[0010] Furthermore, the waterproof performance of the female and male terminals of the expansion connector is no less than IP67.

[0011] The advantages of this utility model compared to the prior art are:

[0012] 1. The present invention provides a segmented wiring harness structure for AMT transmissions, which divides the entire wiring harness of the AMT transmission into a basic wiring harness and an extended wiring harness. By combining the basic wiring harness and the extended wiring harness, it can adapt to all gearbox types, reduce the types of wiring harnesses, reduce storage and transportation costs, and improve production efficiency.

[0013] 2. The segmented wiring harness structure for AMT transmissions of this utility model can be installed by using the existing wiring harness mounting clips or other fixed points on the AMT transmission. The structure is simple and easy to install.

[0014] 3. The segmented wiring harness structure for AMT transmissions of this utility model can integrate different wiring harnesses. When it comes to spare parts in the aftermarket, only one basic wiring harness and several extension wiring harnesses need to be prepared. The number of spare parts is small and the inventory cost is low. When the wiring harness has a problem, the basic wiring harness or the extension wiring harness can be replaced according to the specific point of damage, avoiding the need to replace the entire wiring harness and reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the basic wiring harness of an embodiment of the segmented wiring harness structure for AMT transmissions of this utility model;

[0016] Figure 2 This is a schematic diagram of the extended wiring harness of an embodiment of the segmented wiring harness structure for AMT transmissions of this utility model;

[0017] Figure 3 This is a schematic diagram of the waterproof plug for the extended connector in an embodiment of the segmented wiring harness structure of this utility model for AMT transmission;

[0018] The annotations in the attached figures are explained as follows:

[0019] 1-Transmission TCU connector, 2-Basic wiring harness body, 3-Extension connector female terminal, 4-Intermediate shaft speed sensor connector, 5-Clutch actuator connector, 6-Output shaft speed sensor connector, 7-Extension connector male terminal, 8-Extension wiring harness body, 9-Extension wiring harness accessory plug, 10-Extension connector waterproof plug. Detailed Implementation

[0020] To make the objectives, advantages and features of this utility model clearer, the AMT harness structure proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1 , Figure 2 as well as Figure 3 This utility model is used for the segmented wiring harness structure of AMT transmission, mainly including transmission TCU connector 1, basic wiring harness body 2, expansion connector female end 3, intermediate shaft speed sensor connector 4, clutch actuator connector 5, output shaft speed sensor connector 6, expansion connector male end 7, expansion wiring harness body 8, expansion wiring harness accessory plug 9, and expansion connector waterproof plug 10.

[0022] The specific implementation examples are as follows:

[0023] The basic wiring harness consists of the harness body, expansion connectors, and various transmission plugs. Transmission TCU connector 1 connects to the transmission TCU. The basic wiring harness body 2 connects transmission TCU connector 1 to other connectors. Intermediate shaft speed sensor connector 4 connects to the intermediate shaft speed sensor. Output shaft speed sensor connector 6 connects to the output shaft speed sensor. Clutch actuator connector 5 connects to the clutch actuator. If the transmission does not have a power take-off (PTO) or retarder, the female end 3 of the expansion connector connects to the waterproof plug 10. If the transmission has a PTO or retarder, the female end 3 of the expansion connector connects to the male end 7. The expansion harness body 8 connects to the expansion harness accessory plug 9. The expansion harness accessory plug 9 connects to its sensors and solenoid valves according to the actual PTO or retarder requirements. The model and pin count of the expansion connector can be selected according to actual needs, but its waterproof performance should not be lower than IP67.

[0024] When the transmission needs to execute a shift command, the clutch actuator connector 5, output shaft speed sensor connector 6, and intermediate shaft speed sensor connector 4 transmit speed and clutch displacement signals to the transmission TCU connector 1, and then to the transmission controller. The transmission controller performs internal logic operations to control the internal solenoid valves to complete the gear engagement operation. If the power take-off (PTO) or retarder needs to be operated, the operation signal sequentially passes through the transmission TCU connector 1, the basic wiring harness body 2, the female terminal of the expansion connector 3, the male terminal of the expansion connector 7, the expansion wiring harness body 8, and the expansion wiring harness accessory plug 9 to control the PTO or retarder to complete the corresponding action.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A segmented wire harness structure for an AMT transmission, characterized by: The system includes a transmission TCU connector (1), a basic wiring harness body (2), an expansion connector female end (3), an intermediate shaft speed sensor connector (4), a clutch actuator connector (5), and an output shaft speed sensor connector (6). One end of the basic wiring harness body (2) is connected to the transmission TCU connector (1). The expansion connector female end (3), the intermediate shaft speed sensor connector (4), the clutch actuator connector (5), and the output shaft speed sensor connector (6) are respectively connected to the other end of the basic wiring harness body (2). The clutch actuator connector (5), the output shaft speed sensor connector (6), and the intermediate shaft speed sensor connector (4) respectively transmit the clutch displacement signal, the output shaft speed signal, and the intermediate shaft speed signal to the transmission TCU connector (1). The female end (3) of the expansion connector is used to connect the power take-off and / or the retarder.

2. The segmented wire harness structure for an AMT transmission according to claim 1, characterized by: It also includes an expansion connector male end (7), which is connected to the expansion connector female end (3), and the expansion connector male end (7) is used to connect the power take-off and / or the retarder.

3. The segmented wire harness structure for an AMT transmission of claim 2, wherein: It also includes an extension harness body (8) and an extension harness accessory plug (9); one end of the extension harness body (8) is connected to the male end (7) of the extension connector, and the other end is connected to the extension harness accessory plug (9), which is used to connect the sensor and / or solenoid valve of the power take-off and / or retarder.

4. The segmented wire harness structure for an AMT transmission according to claim 3, characterized by: The expansion connector female end (3) is connected to an expansion connector waterproof plug (10) to prevent water from entering the expansion connector female end (3) when the expansion harness is not needed.

5. The segmented wire harness structure for an AMT transmission of claim 4, wherein: The waterproof performance of the female end (3) and male end (7) of the expansion connector is not lower than IP67.

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