Switching device for commercial medium-sized truck vehicle end and external modular AMT (automated mechanical transmission)

Abstract

The utility model relates to a medium-sized card modularized AMT switching technology, and provides a switching device for a commercial medium-sized card whole vehicle end and an external modularized AMT in order to solve the problem of connection between an original process test bench interface and an external modularized AMT wire harness under the condition that the original configuration of a process bench is maintained. Wherein the interface of the whole vehicle end is 25 pins; comprising an external modular AMT interface, an external modular AMT adapter plug connected with the external modular AMT interface in an inserted mode, a whole vehicle end adapter plug and a wire harness. The external modular AMT interface is 20 pins and is used for being connected with a TCU end on an external modular AMT; the external modular AMT adapter plug is matched with the external modular AMT interface, and the whole vehicle end adapter plug is matched with the whole vehicle end interface; and the external modular AMT adapter plug is connected with the whole vehicle end adapter plug through a corresponding connecting line in the wiring harness.

Description

Technical Field

[0001] The utility model relates to a connection harness used on a commercial truck, in particular to a switching device used for connecting a whole vehicle end of a commercial medium truck and an external modular AMT. Background Art

[0002] AMT is a transmission device controlled by TCU that can automatically shift gears according to the vehicle's operating status and the road environment. It supplies power to the TCU through the vehicle wiring harness. At the same time, the vehicle wiring harness can also connect other control units of the vehicle and the TCU through CAN lines.

[0003] Currently, most of the commercial vehicle and medium-duty truck AMTs operating on the market are modular AMTs, which use the mainstream 25-pin connector products of ITT manufacturers for communication between the whole vehicle and the gearbox. Since the waterproof and vibration resistance of the connector need to be improved, communication failures are relatively frequent during the use of some medium-duty truck products. Therefore, it is replaced with the new 20-pin connector of TE manufacturers to connect the whole vehicle with the new gearbox wiring harness. There is a significant difference between the original modular AMT wiring harness connecting the whole vehicle and the current external modular AMT wiring harness. When connecting the original connector with the new connector on the original modular AMT assembly process test bench, it is necessary to provide a new connection harness that meets the connection between the two.

[0004] Patent No. 202322757435.8 discloses a modular mid-truck AMT adapter harness for commercial vehicles, which provides a TCU connection harness for the AMT vehicle and the mainstream 25-pin connector of ITT manufacturers, but does not provide a connection harness for the new connector.

[0005] In order to complete the off-line test and diagnosis process of the external modular AMT quickly and easily at a low cost while maintaining the original configuration of the process bench, it is necessary to develop a wiring harness that can solve the problem of replacing different types of gearbox wiring harnesses on the modular AMT assembly process bench for medium-sized commercial trucks, so that the external modular AMT wiring harness can be adapted and connected to the original process test bench interface. Utility Model Content

[0006] The purpose of this utility model is to solve the connection problem between the original process test bench interface and the external modular AMT wiring harness while the process bench maintains its original configuration, and to propose a switching device for the commercial medium-duty truck vehicle end and the external modular AMT.

[0007] In order to achieve the above objectives, the technical solutions proposed by this utility model are:

[0008] An adapter for connecting a commercial medium-duty truck to an external modular AMT. The vehicle-side interface is 25 pins. Its special features include:

[0009] It includes an external modular AMT interface, an external modular AMT adapter plug that plugs into the external modular AMT interface, a vehicle-end adapter plug, and a wiring harness; the external modular AMT interface is 20 pins and is used to connect to the TCU end of the external modular AMT;

[0010] The external modular AMT adapter plug is adapted to the external modular AMT interface, the vehicle-side adapter plug is adapted to the vehicle-side interface, and the external modular AMT adapter plug and the vehicle-side adapter plug are connected via a wiring harness; the corresponding connection relationships are as follows:

[0011] Pins 1, 4, 17, and 20 of the external modular AMT adapter plug correspond to pins 1, 3, 2, and 4 of the vehicle-side adapter plug for power supply connection.

[0012] The 5th and 6th pins of the external modular AMT adapter plug correspond to the 6th and 7th pins of the vehicle-end adapter plug respectively, and are used for vehicle CAN communication protocol connection;

[0013] The 7th pin of the external modular AMT adapter plug corresponds to the 8th pin of the vehicle-side adapter plug, which is used to connect the CAN shielded cable;

[0014] The 8th and 9th pins of the external modular AMT adapter plug correspond to the 9th and 10th pins of the vehicle-side adapter plug, respectively, for the transmission CAN communication protocol connection;

[0015] The 10th pin of the external modular AMT adapter plug corresponds to the 11th pin of the vehicle-end adapter plug and is used to connect the transmission CAN shield line;

[0016] The 11th pin of the external modular AMT adapter plug corresponds to the 12th pin of the vehicle-end adapter plug for PTO valve drive control connection;

[0017] The 12th pin of the external modular AMT adapter plug corresponds to the 13th pin of the vehicle-end adapter plug, which is used to enable the switch control connection;

[0018] The 13th pin of the external modular AMT adapter plug corresponds to the 14th pin of the vehicle-end adapter plug for the travel switch control connection;

[0019] The 14th and 15th pins of the external modular AMT adapter plug correspond to the 17th and 18th pins of the vehicle-side adapter plug, respectively, for the handle signal redundant switch control connection;

[0020] The 16th pin of the external modular AMT adapter plug corresponds to the 20th pin of the vehicle-end adapter plug for the handbrake signal transmission connection;

[0021] The 18th pin of the external modular AMT adapter plug corresponds to the 15th pin of the vehicle-end adapter plug and is used for the neutral signal transmission connection;

[0022] Pin 19 of the external modular AMT adapter plug connects to pin 16 of the vehicle-side adapter plug for reverse gear signal transmission. Furthermore, when the vehicle-side adapter plug is mated with the vehicle-side interface, the pins on the vehicle-side adapter plug that correspond to pins 21-25 on the vehicle-side interface are omitted.

[0023] Furthermore, the external modular AMT adapter plug includes a plug mounting seat and 20 pins distributed in four rows and five columns on the plug mounting seat, wherein the diameters of the pins distributed at the four corners are the same, and the diameters of the pins at the four corners are larger than the diameters of the pins distributed at other positions; the socket on the external modular AMT interface is adapted to the distribution position and size of the pins on the external modular AMT adapter plug.

[0024] Furthermore, a wiring harness bracket is provided at the connection between the external modular AMT interface and the TCU end on the external modular AMT. The wiring harness bracket is fixed to the external modular AMT interface by fasteners, so as to maintain stability when the external modular AMT interface is connected to the TCU end on the external modular AMT.

[0025] Furthermore, the diameters of the pins at the four corners are 1.3-4 times the diameters of the pins distributed at other positions.

[0026] Furthermore, the diameters of the pins at the four corners are 1-2 mm; the diameters of the pins distributed at other positions are 0.5-0.75 mm.

[0027] Furthermore, the length of the wire bundle is 0.3-1.2 meters.

[0028] Furthermore, an insulating sheath is provided on the wire harness.

[0029] Furthermore, the length of the wire bundle is 0.5 meters.

[0030] Beneficial effects of the utility model:

[0031] The utility model is a conversion device for the whole vehicle end of a commercial medium-sized truck and an external modular AMT. While the process bench maintains its original configuration, it can quickly realize the external modular AMT and the whole vehicle end in a relatively simple, convenient and low-cost manner, avoiding the change of the chassis wiring harness during the replacement process. The replacement process is simple and efficient. At the same time, the adapter wiring harness of the utility model can also be used to connect the external modular AMT with the offline test and diagnostic device to meet the offline test requirements. It has a wide range of applications and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of an adapter device for connecting a commercial medium-sized truck to an external modular AMT in an embodiment of the present invention (the external modular AMT interface is omitted);

[0033] Figure 2 This is a schematic structural diagram of an external modular AMT adapter plug in an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the external modular AMT interface in the embodiment of the utility model;

[0035] Reference numerals:

[0036] 1-External modular AMT adapter plug, 2-Vehicle-end adapter plug, 3-Wire harness, 4-Plug mounting base, 5-Pin, 6-External modular AMT interface, 7-Wire harness bracket, 8-Fasteners. DETAILED DESCRIPTION

[0037] like Figure 1 As shown, a conversion device for commercial medium-sized trucks and external modular AMT, wherein: the interface of the vehicle end is 25 pins, and the specific models are ITT 132025-001 (vehicle end) and 132025-000 (transmission end); the external modular AMT interface 6 is connected to the TCU end on the external modular AMT, and the external modular AMT interface 6 is 20 pins, and the specific models are TE1-2350891-1 (transmission TCU wiring harness end) and 2350890-1 (vehicle wiring harness end); it also includes an external modular AMT adapter plug 1 plugged with the external modular AMT interface 6, a vehicle-end adapter plug 2 and a wiring harness 3; it is used to realize the replacement process of the external modular AMT transmission on the originally assembled medium-sized truck vehicle end AMT vehicle or the offline test and diagnosis process of the external modular AMT transmission at a low cost and quickly without changing the vehicle chassis wiring harness or the assembly process bench wiring harness.

[0038] The external modular AMT adapter plug 1 is compatible with the external modular AMT interface 6, and the vehicle-side adapter plug 2 is compatible with the vehicle-side interface. The external modular AMT adapter plug 1 and the vehicle-side adapter plug 2 are connected via a wire harness 3. The wire harness 3 is 0.5 meters long and is also provided with an insulating sheath. In the order from left to right and from top to bottom, the corresponding connection relationship between the external modular AMT adapter plug 1 and the vehicle-side adapter plug 2 is as follows:

[0039] Pins 1, 4, 17, and 20 of the external modular AMT adapter plug 1 correspond to pins 1, 3, 2, and 4 of the vehicle-side adapter plug 2 for power supply connection.

[0040] The 5th and 6th pins of the external modular AMT adapter plug 1 correspond to the 6th and 7th pins of the vehicle-end adapter plug 2, respectively, for the vehicle CAN communication protocol connection;

[0041] The 7th pin of the external modular AMT adapter plug 1 corresponds to the 8th pin of the vehicle-end adapter plug 2, which is used to form a CAN shielded cable connection;

[0042] The 8th and 9th pins of the external modular AMT adapter plug 1 correspond to the 9th and 10th pins of the vehicle-side adapter plug 2, respectively, for the transmission CAN communication protocol connection;

[0043] The 10th pin of the external modular AMT adapter plug 1 corresponds to the 11th pin of the vehicle-end adapter plug 2, which is used to connect the transmission CAN shielding line;

[0044] The 11th pin of the external modular AMT adapter plug 1 corresponds to the 12th pin of the vehicle-end adapter plug 2 for PTO valve drive control connection;

[0045] The 12th pin of the external modular AMT adapter plug 1 corresponds to the 13th pin of the vehicle-side adapter plug 2, which is used to enable the switch control connection;

[0046] The 13th pin of the external modular AMT adapter plug 1 corresponds to the 14th pin of the vehicle-end adapter plug 2 for the travel switch control connection;

[0047] The 14th and 15th pins of the external modular AMT adapter plug 1 correspond to the 17th and 18th pins of the vehicle-end adapter plug 2, respectively, for the handle signal redundant switch control connection;

[0048] The 16th pin of the external modular AMT adapter plug 1 corresponds to the 20th pin of the vehicle-end adapter plug 2 for the handbrake signal transmission connection;

[0049] The 18th pin of the external modular AMT adapter plug 1 corresponds to the 15th pin of the vehicle-end adapter plug 2 for the neutral signal transmission connection;

[0050] Pin 19 of the external modular AMT adapter plug 1 connects to pin 16 of the vehicle-side adapter plug 2, transmitting the reverse gear signal. When the vehicle-side adapter plug 2 is mated with the vehicle-side interface, the pins corresponding to pins 21-25 on the vehicle-side interface are omitted. This simplifies the structure of the vehicle-side adapter plug 2 and reduces alignment issues associated with excessive pin connections. Alternatively, all pins corresponding to pin 25 are included.

[0051] like Figure 2 As shown, the external modular AMT adapter plug 1 includes a plug mounting base 4 and 20 pins 5 distributed in four rows and five columns on the plug mounting base 4, wherein the pins 5 distributed at the four corners have the same diameter, and the diameter of the pins at the four corners is 1.3-4 times the diameter of the pins distributed at other positions; wherein, the diameter of the pins 5 at the four corners is 1-2mm; the diameter of the pins 5 distributed at other positions is 0.5-0.75mm; the socket on the external modular AMT interface 6 is adapted to the distribution position and size of the pins 5 on the external modular AMT adapter plug 1; wherein the pins 5 at the four corners can be used to connect modules with larger current, and at the same time can also maintain the stability of the external modular AMT adapter plug 1, thereby ensuring the stability of the connection harness after connection.

[0052] like Figure 3 As shown, a wiring harness bracket 7 is also provided at the connection between the external modular AMT interface 6 and the TCU end of the external modular AMT. The wiring harness bracket 7 is fixed to the external modular AMT interface 6 by a fastener 8, and is used to ensure that the external modular AMT interface 6 and the TCU end of the external modular AMT remain stable when connected, thereby improving the overall stability of the device.

Claims

1. A transfer device for connecting a commercial medium truck to an external modular AMT, wherein: The vehicle-side interface is 25 pins; its features are: The invention comprises an external modular AMT interface (6), an external modular AMT adapter plug (1) plugged into the external modular AMT interface (6), a vehicle-end adapter plug (2) and a wiring harness (3); the external modular AMT interface (6) is 20 pins and is used to connect to the TCU end of the external modular AMT; The external modular AMT adapter plug (1) is adapted to the external modular AMT interface (6), and the vehicle-end adapter plug (2) is adapted to the vehicle-end interface; The external modular AMT adapter plug (1) and the vehicle-end adapter plug (2) are connected via corresponding connecting wires in the wiring harness (3); the corresponding connection relationship is as follows: The 1st, 4th, 17th and 20th pins of the external modular AMT adapter plug (1) are respectively connected to the 1st, 3rd, 2nd and 4th pins of the vehicle end adapter plug (2) for power supply connection; The 5th and 6th pins of the external modular AMT adapter plug (1) are respectively connected to the 6th and 7th pins of the vehicle-end adapter plug (2) for the vehicle CAN communication protocol connection; The 7th pin of the external modular AMT adapter plug (1) corresponds to the 8th pin of the vehicle-end adapter plug (2) for forming a CAN shielded line connection; The 8th and 9th pins of the external modular AMT adapter plug (1) are respectively connected to the 9th and 10th pins of the vehicle-end adapter plug (2) for the transmission CAN communication protocol connection; The 10th pin of the external modular AMT adapter plug (1) corresponds to the 11th pin of the vehicle-end adapter plug (2) for connecting the transmission CAN shielding line; The 11th pin of the external modular AMT adapter plug (1) corresponds to the 12th pin of the vehicle-end adapter plug (2) for PTO valve drive control connection; The 12th pin of the external modular AMT adapter plug (1) corresponds to the 13th pin of the vehicle-end adapter plug (2) for enabling the switch control connection; The 13th pin of the external modular AMT adapter plug (1) corresponds to the 14th pin of the vehicle-end adapter plug (2) for the travel switch control connection; The 14th and 15th pins of the external modular AMT adapter plug (1) are respectively connected to the 17th and 18th pins of the vehicle-end adapter plug (2) for connecting the handle signal redundant switch control; The 16th pin of the external modular AMT adapter plug (1) corresponds to the 20th pin of the vehicle-end adapter plug (2) for handbrake signal transmission connection; The 18th pin of the external modular AMT adapter plug (1) corresponds to the 15th pin of the vehicle-end adapter plug (2) for neutral gear signal transmission connection; The 19th pin of the external modular AMT adapter plug (1) corresponds to the 16th pin of the vehicle-end adapter plug (2) for reverse gear signal transmission connection.

2. The adapter device for connecting a commercial medium-sized truck to an external modular AMT according to claim 1, characterized in that: When the vehicle-end adapter plug (2) is adapted to the vehicle-end interface, the pins provided on the vehicle-end adapter plug (2) omit the pins corresponding to pins 21-25 on the vehicle-end interface.

3. The adapter device for connecting a commercial medium-sized truck end to an external modular AMT according to claim 1 or 2, characterized in that: The external modular AMT adapter plug (1) comprises a plug mounting seat (4) and 20 pins (5) distributed on the plug mounting seat (4) in four rows and five columns, wherein the pins (5) distributed at the four corners have the same diameter, and the diameter of the pins (5) at the four corners is larger than the diameter of the pins (5) distributed at other positions; the sockets on the external modular AMT interface (6) are adapted to the distribution position and size of the pins (5) on the external modular AMT adapter plug (1).

4. The adapter device for connecting a commercial medium-sized truck to an external modular AMT according to claim 3, characterized in that: A wiring harness bracket (7) is further provided at the connection point between the external modular AMT interface (6) and the TCU end on the external modular AMT. The wiring harness bracket (7) is fixed to the external modular AMT interface (6) via a fastener (8) and is used to ensure that the external modular AMT interface (6) and the TCU end on the external modular AMT remain stable when connected.

5. The adapter device for connecting a commercial medium-sized truck end to an external modular AMT according to claim 4, characterized in that: The diameters of the pins (5) at the four corners are 1.3-4 times the diameters of the pins (5) distributed at other positions.

6. The adapter device for connecting a commercial medium-sized truck to an external modular AMT according to claim 5, characterized in that: The diameters of the pins (5) at the four corners are 1-2 mm; the diameters of the pins (5) distributed at other positions are 0.5-0.75 mm.

7. The adapter device for connecting a commercial medium-sized truck to an external modular AMT according to claim 6, characterized in that: The length of the wire bundle (3) is 0.3-1.2 meters.

8. The adapter device for connecting a commercial medium-sized truck to an external modular AMT according to claim 7, characterized in that: The wire bundle (3) is provided with an insulating sheath.

9. The adapter device for connecting a commercial medium truck end and an external modular AMT according to claim 8, characterized in that: The length of the wire bundle (3) is 0.5 meters.

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