Device and method for detecting connection force between wire harness and terminal

Abstract

The invention discloses a device and a method for detecting connection force between a wire harness and a terminal, and belongs to the technical field of wire harness detection. The device comprises a frame body, a first shell, a limiting piece and a pressure sensor; the first shell has a first direction, a second direction and a third direction; the first shell is arranged on the frame body, the first shell comprises a first shell wall, a first cavity is defined by the first shell wall, in the first direction, one end of the first shell wall is provided with a first through hole, and the first through hole is communicated with the first cavity; the limiting piece is connected with the frame body, the limiting piece and the frame body have a detection state, in the detection state, the limiting piece is arranged on the side, provided with the first through hole, of the first shell in the first direction, and at least part of the orthographic projection of the limiting piece penetrates through the first through hole; the pressure sensor is connected with the limiting piece, in the detection state, the pressure sensor is arranged on the side, close to the first shell, of the limiting piece, and in the first direction, the orthographic projection of the pressure sensor penetrates through the first through hole.

Description

Technical Field

[0001] This application belongs to the field of wire harness testing technology, specifically relating to an apparatus and method for testing the connection force between wire harnesses and terminals. Background Technology

[0002] In a vehicle's battery module, high-voltage power distribution equipment such as BDU (Battery Disconnect Unit), PDU (Power Distribution Unit), and BMU (Battery Management Unit) are typically required to manage the power distribution of the battery.

[0003] High-voltage power distribution equipment, batteries, and external electrical control equipment are often connected by wire harnesses. To ensure the effectiveness and reliability of the connection, different connection terminals are set on the wire harness for different devices, such as hole terminals, plug-in male terminals, and plug-in female terminals. All types of connection terminals need to be connected and fixed, and they need to meet specific connection forces. Otherwise, problems such as loose connections and disconnections are likely to occur. However, there is currently no suitable connection force testing equipment to test the connection force of wire harnesses and terminals. Summary of the Invention

[0004] Purpose of the invention: This application develops a device and method for detecting the connection force of wire harnesses and terminals, aiming to solve the technical problem that the connection force of wire harnesses and terminals cannot be detected in the prior art.

[0005] Technical solution: In a first aspect, embodiments of this application provide a device for detecting the connection force of wire harnesses and terminals, comprising: A frame having intersecting first, second, and third directions; A first housing extends along the first direction and is connected to the frame; the first housing includes a first housing wall that encloses a first chamber; one end of the first housing wall along the first direction has a first through hole that communicates with the first chamber; A limiting member is connected to the frame and has a detection state with the first housing: along the first direction, the limiting member is disposed on the side of the first housing with the first through hole, and the orthographic projection of the limiting member at least partially passes through the first through hole. A pressure sensor is connected to the limiting member. In the detection state, the pressure sensor is disposed on the side of the limiting member close to the first housing. Along the first direction, the orthogonal projection of the pressure sensor passes through the first through hole.

[0006] In some embodiments, the limiting member is slidably connected to the frame along the third direction.

[0007] In some embodiments, it also includes: A first transmission member is hinged to the limiting member and is used to drive the limiting member to move along the third direction; the first transmission member has a sliding groove along its extension direction. A first connector is connected to the frame, and at least a portion of the first connector passes through the sliding groove and is slidably connected to the sliding groove along its length. The first transmission component can rotate around the outer surface of the first connector via the inner surface of the sliding groove.

[0008] In some embodiments, it also includes: The second transmission component includes a body and a second connecting component. The body is slidably connected to the frame along the third direction. The body is connected to the second connecting component, and at least a portion of the second connecting component rotatably passes through the sliding groove and is slidably connected to the sliding groove along its length. The first transmission component can rotate around the outer surface of the second connecting component via the inner surface of the sliding groove. An electric motor is connected to the main body for driving the main body to move along the third direction.

[0009] In some embodiments, the body is provided with a rack arranged along the third direction, and the output end of the motor is provided with a gear, which meshes with the rack for transmission.

[0010] In some embodiments, it also includes: A triggering element is disposed through the first housing wall and partially disposed in the first cavity and partially disposed outside the first housing; the triggering element includes a first limiting element disposed on the outer wall of the triggering element and disposed outside the first housing, for abutting against the first housing wall when the triggering element moves relative to the first housing wall in the first direction, so as to limit the length of the triggering element penetrating into the first cavity; The second limiting member is connected to the first housing wall and is disposed on the outside of the first housing; An elastic element is connected to the trigger element. The elastic element extends along the first direction, and its two ends are connected to the first limiting element and the second limiting element, respectively, along the first direction.

[0011] In some embodiments, it also includes: The third limiting member is arranged along the first direction, and the third limiting member is spaced apart from the second limiting member 92. The third limiting member is located on the side of the second limiting member away from the first housing. The first conductive terminal and the second conductive terminal are disposed on the third limiting member. The first conductive terminal is connected to the control power supply. Along the first direction, the first conductive terminal and the second conductive terminal are disposed on the side of the third limiting member close to the second limiting member. A first conductive element is insulated from the trigger element and disposed between the second limiting element and the third limiting element. Along the first direction, the orthographic projection of the first conductive element at least partially coincides with the orthographic projections of the first conductive terminal and the second conductive terminal. In the detection state, the first conductive element is connected to the first conductive terminal and the second conductive terminal. A first circuit is provided, wherein the input terminal of the first circuit is connected to the second conductive terminal, and the output terminal of the first circuit is connected to the motor, for controlling the forward and reverse rotation of the motor.

[0012] In some embodiments, the first circuit includes: A first relay, wherein the input terminal of the first relay is connected to the first conductive terminal and the second conductive terminal, the first relay comprising: The first switch group includes a first switch element, a first terminal and a second terminal. The first switch element is connected to the first power supply terminal of the motor. The first terminal is connected to the drive power supply. The second terminal is grounded. The first switch element and the first terminal form a normally closed switch. The first switch element and the second terminal form a normally open switch. The second switch group includes a second switch element, a third terminal and a fourth terminal. The second switch element is connected to the second power supply terminal of the motor. The third terminal is grounded and the fourth terminal is connected to the power supply. The second switch element and the third terminal form a normally closed switch and a normally open switch. The first and second switching components operate synchronously.

[0013] In some embodiments, a second circuit is further included, the second circuit comprising: A second relay, wherein an external control button is connected to the input terminal of the second relay, the second relay comprising: The third switch group includes a third switch element, a fifth terminal block, and a sixth terminal block. The third switch element is connected to the first power supply terminal. The fifth terminal block is connected to the drive power supply and is connected in parallel with the first terminal block, the second terminal block, and the sixth terminal block. The sixth terminal block is connected in series with the first switch element. The third switch assembly and the fifth terminal block form a normally open switch, and the third switch assembly and the sixth terminal block form a normally closed switch. The fourth switch group includes a fourth switch element, a seventh terminal and an eighth terminal. The fourth switch element is connected to the second power supply terminal. The seventh terminal is grounded. The eighth terminal is connected in series with the second switch element. The fourth switch element and the eighth terminal form a normally closed switch, and the fourth switch element and the seventh terminal form a normally open switch.

[0014] Secondly, embodiments of this application also provide a method for detecting the connection force of a wire harness and terminals, applied to the apparatus for detecting the connection force of a wire harness and terminals as described in any one of the first aspects, comprising: Obtain the terminal and wiring harness to be tested, and connect the terminal and the wiring harness; Insert the terminal into the first chamber through the first through hole; In response to the limiting member and the first housing being in a detection state, the wire harness is pulled so that the terminal abuts against the pressure sensor, and the output data of the pressure sensor is obtained as the connection force between the wire harness and the terminal.

[0015] Beneficial Effects: Compared with the prior art, the present application provides a device for detecting the connection force of wire harnesses and terminals, including a frame, a first housing, a limiting member, and a pressure sensor; the first housing has a first direction, a second direction, and a third direction that intersect; the first housing is disposed on the frame and extends along the first direction, the first housing includes a first housing wall, the first housing wall enclosing to form a first chamber, and in the first direction, one end of the first housing wall has a first through hole, the first through hole communicating with the first chamber, so that the terminal to be detected enters the first chamber through the first through hole; the limiting member is connected to the frame, and the limiting member and the frame have a detection state, in which the limiting member is disposed on the side of the first housing with the first through hole along the first direction. Furthermore, the orthographic projection of the limiting member at least partially passes through the first through hole; the pressure sensor is connected to the limiting member, and in the detection state, the pressure sensor is disposed on the side of the limiting member close to the first housing, and along the first direction, the orthographic projection of the pressure sensor passes through the first through hole, so that in the detection state, the terminal to be detected can abut against the pressure sensor under the pull of the wire harness, so as to detect the connection force between the wire harness and the terminal. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 An overall perspective view of a device for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application; Figure 2 A first cross-sectional perspective view of an apparatus for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application; Figure 3 A second sectional perspective view of an apparatus for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 A third sectional perspective view of a device for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application; Figure 6 A perspective view of the structure of the first housing, second limiting member, third limiting member, first conductive terminal and second conductive terminal in the device for detecting the connection force of wire harness and terminal provided in the embodiments of this application; Figure 7 A perspective view of the trigger, the first limiting member, and the first conductive member in a device for detecting the connection force of a wire harness and a terminal provided in an embodiment of this application; Figure 8 A circuit diagram of a device for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application; Figure 9 A flowchart illustrating the steps of a method for detecting the connection force between a wire harness and terminals provided in an embodiment of this application; Reference numerals: 10, frame; 20, first housing; 21, first housing wall; 22, first chamber; 23, first through hole; 30, limiting member; 40, pressure sensor; 50, first transmission member; 51, sliding groove; 60, first connecting member; 70, second transmission member; 71, body; 72, second connecting member; 80, motor; 90, trigger member; 91, first limiting member; 92, second limiting member; 93, elastic member; 110, third limiting member; 111, first conductive terminal; 112, second conductive terminal; 120, first conductive member; 130, first circuit; 131, first relay ; 132, First switch group; 133, First switch element; 134, First terminal block; 135, Second terminal block; 140, Second switch group; 141, Second switch element; 142, Third terminal block; 143, Fourth terminal block; 150, Second circuit; 151, Second relay; 152, Third switch group; 153, Third switch element; 154, Fifth terminal block; 155, Sixth terminal block; 160, Fourth switch group; 161, Fourth switch element; 162, Seventh terminal block; 163, Eighth terminal block; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0019] In a vehicle's battery module, high-voltage power distribution equipment such as BDU (Battery Disconnect Unit), PDU (Power Distribution Unit), and BMU (Battery Management Unit) are typically required to manage the power distribution of the battery.

[0020] High-voltage power distribution equipment, batteries, and external electrical control equipment are often connected by wire harnesses. To ensure the effectiveness and reliability of the connection, different connection terminals are set on the wire harness for different devices, such as hole terminals, plug-in male terminals, and plug-in female terminals. All types of connection terminals need to be connected and fixed, and they need to meet specific connection forces. Otherwise, problems such as loose connections and disconnections are likely to occur. However, there is currently no suitable connection force testing equipment to test the connection force of wire harnesses and terminals.

[0021] In view of this, the present application provides a device for detecting the connection force of wire harnesses and terminals, including a frame 10, a first housing 20, a limiting member 30, and a pressure sensor 40; the first housing 20 has a first direction X, a second direction Y, and a third direction Z that are intersecting; the first housing 20 is disposed on the frame 10 and extends along the first direction X; the first housing 20 includes a first housing wall 21, which encloses to form a first chamber 22; in the first direction X, one end of the first housing wall 21 has a first through hole 23, which communicates with the first chamber 22, so that the terminal to be detected enters the first chamber 22 through the first through hole 23; the limiting member 30 is connected to the frame 10, and the limiting member 30 and the frame 10 have a detection state; in the detection state, along the first direction X, the limiting member 30 is disposed on the side of the first housing 20 with the first through hole 23. Furthermore, the orthographic projection of the limiting member 30 at least partially passes through the first through hole 23; the pressure sensor 40 is connected to the limiting member 30. In the detection state, the pressure sensor 40 is disposed on the side of the limiting member 30 near the first housing 20, and along the first direction X, the orthographic projection of the pressure sensor 40 passes through the first through hole 23, so that in the detection state, the terminal to be detected can abut against the pressure sensor 40 under the pull of the wire harness to detect the connection force between the wire harness and the terminal.

[0022] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , Figure 1 This is an overall perspective view of the device for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application. Figure 2 This is a first cross-sectional perspective view of an apparatus for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application. Figure 3 This is a second cross-sectional perspective view of a device for detecting the connection force between wire harnesses and terminals provided in an embodiment of this application. Figure 5 This is a third sectional perspective view of a device for detecting the connection force between wire harnesses and terminals provided in an embodiment of this application. Figure 6 This is a perspective view of the structure of the first housing, second limiting member, third limiting member, first conductive terminal and second conductive terminal in the device for detecting the connection force of wire harness and terminal provided in the embodiments of this application. The device for detecting the connection force of wire harness and terminal provided in this application includes a frame 10, a first housing 20, a limiting member 30 and a pressure sensor 40.

[0023] Specifically, to facilitate understanding of the relative positional relationships between components, the frame 10 of this application has a first direction X, a second direction Y, and a third direction Z that intersect. In specific engineering design, the first direction X, the second direction, and the third direction Z are orthogonally arranged.

[0024] Specifically, the first housing 20 extends along the first direction X and is connected to the frame 10. The first housing 20 is used to fix the connection terminal to be tested. The first housing 20 includes a first housing wall 21, which encloses to form a first chamber 22. The first chamber 22 is used to accommodate the connection terminal to be tested. Along the first direction X, one end of the first housing wall 21 has a first through hole 23, which communicates with the first chamber 22. It can be understood that when performing connection force testing on the wire harness and the terminal, the terminal to be tested is inserted into the first chamber 22 of the first housing 20 through the first through hole 23. Specifically, the limiting member 30 is connected to the frame 10, and the limiting member 30 and the first housing 20 are in a detection state: along the first direction X, the limiting member 30 is disposed on the side of the first housing 20 having the first through hole 23, and the orthographic projection of the limiting member 30 at least partially passes through the first through hole 23; it can be understood that after the terminal to be tested is inserted into the first chamber 22, the relative position of the limiting member 30 and the first housing 20 is adjusted so that the limiting member 30 and the first housing 20 are in a detection state. Since the orthographic projection of the limiting member 30 in the first direction X at least partially passes through the first through hole 23, the limiting member 30 can limit the movement of the terminal to be tested in the first direction X, so as to limit the terminal to be tested.

[0025] In some embodiments, the limiting member 30 is slidably connected to the frame 10 along the third direction Z. By sliding the limiting member 30 along the third direction Z, a portion of the limiting member 30 is inserted into the first through hole 23, and the limiting member 30 and the frame 10 are switched to the detection state. Specifically, the limiting member 30 and the frame 10 can be slidably connected using a slider rail.

[0026] Specifically, the pressure sensor 40 is connected to the limiting member 30. In the detection state, the pressure sensor 40 is positioned on the side of the limiting member 30 near the first housing 20, and its orthogonal projection passes through the first through hole 23 along the first direction X. Understandably, in the detection state, by pulling the wiring harness, the terminal to be tested is brought into contact with the pressure sensor 40 to detect the connection force between the wiring harness and the terminal to be tested.

[0027] In some embodiments, the apparatus for detecting the connection force of wire harnesses and terminals provided in this application further includes a first transmission member 50 and a first connector 60.

[0028] Specifically, the first transmission member 50 is hinged to the limiting member 30 on the side away from the first housing 20 along the third direction Z, which is used to drive the limiting member 30 to move up and down along the third direction Z, so as to realize the insertion and exit of the limiting member 30 and the frame 10 in the detection state; along the extension direction of the first transmission member 50, the first transmission member 50 is provided with a sliding groove 51.

[0029] Specifically, the first connector 60 is connected to the frame 10 and extends along the second direction Y; at least a portion of the first connector 60 passes through the sliding groove 51 and is slidably connected to the sliding groove 51 along the length direction of the sliding groove 51; the first transmission member 50 can rotate around the outer surface of the second connector 72 through the inner surface of the sliding groove 51, so that the first transmission member 50 can slide along the direction of the first transmission member 50 through the sliding groove 51 while rotating around the first connector 60.

[0030] In some embodiments, the device for detecting the connection force of wire harnesses and terminals provided in this application further includes a second transmission member 70 and a motor 80.

[0031] Specifically, the second transmission member 70 includes a body 71 and a second connecting member 72. The body 71 is slidably connected to the frame 10 along the second direction Y. Specifically, a slider rail can be set between the body 71 and the frame 10 to achieve the slidable connection. The body 71 is connected to the second connecting member 72. At least a part of the second connecting member 72 passes through the sliding groove 51 and is slidably connected to the sliding groove 51 along the length direction of the sliding groove 51. The first transmission member 50 can rotate around the outer surface of the second connecting member 72 through the inner surface of the sliding groove (51), so that the first transmission member 50 can slide along the direction of the first transmission member 50 through the sliding groove 51 while rotating around the second connecting member 72.

[0032] Specifically, the motor 80 is fixedly connected to the frame 10 and is also drively connected to the body 71, driving the body 71 to move along the third direction Z. Specifically, the body 71 and the motor 80 can be connected by a rack and pinion mechanism, with the rack arranged along the second direction Y on the body 71. The gear shaft is connected to the output end of the motor 80. The motor 80 drives the rotational motion of the gear output, causing the rack and body 71 to move up and down along the second direction Y. This allows the first connecting member 60 to act as a fulcrum, driving the limiting member 30 to move along the second direction Y via the first transmission member 50. In specific implementations, the motor 80 in this application is a stepper motor.

[0033] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 , Figure 1 This is an overall perspective view of the device for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application. Figure 2 This is a first cross-sectional perspective view of an apparatus for detecting the connection force of wire harnesses and terminals provided in an embodiment of this application. Figure 4 for Figure 3 A magnified view of a portion of point A in the middle. Figure 6This is a perspective view of the structure of the first housing, second limiting member, third limiting member, first conductive terminal and second conductive terminal in the device for detecting the connection force of wire harness and terminal provided in the embodiments of this application. The device for detecting the connection force of wire harness and terminal provided in the embodiments of this application also includes a trigger member 90, a second limiting member 92 and an elastic member 93.

[0034] Specifically, the trigger 90 passes through the first housing wall 21, partially passes through the first chamber 22, and is partially disposed outside the first housing 20. During the process of inserting the terminal to be tested into the first chamber 22, the terminal to be tested abuts against the portion of the trigger 90 that passes through the first chamber 22, and pushes the trigger 90 to move relative to the first housing wall 21 along the first direction X during the insertion process. The trigger 90 includes a first limiting member 91 disposed on the outer wall of the trigger 90. The first limiting member 91 is disposed outside the first housing 20 and abuts against the first housing wall 21 when the trigger 90 moves relative to the first housing wall 21 along the first direction X, so as to limit the length of the trigger 90 that passes into the first chamber 22. Specifically, the first limiting member 91 is an annular boss that is wrapped around the outer wall of the trigger 90.

[0035] Specifically, the second limiting member 92 is connected to the first housing wall 21 and disposed outside the first housing 20 to limit the length of the limiting member 90 extending out of the first housing 20, while the second limiting member 92 provides a connection terminal for circuit connection; Specifically, the elastic element 93 is connected to the trigger element 90. The elastic direction of the elastic element 93 extends along the first direction X, and its two ends are connected to the first limiting element 91 and the second limiting element 92, respectively, along the first direction X. Understandably, before the terminal to be tested is inserted, the elastic element 93 extends, pressing the first limiting element 91 against the outer wall of the first housing 20; during the insertion of the terminal to be tested, the trigger element 90 is pressed along the first direction X, causing the first limiting element 91 to compress the elastic element 93.

[0036] In some embodiments, please refer to Figure 4 , Figure 6 , Figure 7 and Figure 8 , Figure 4 for Figure 3 A magnified view of a portion of point A in the middle. Figure 6 This is a perspective view of the structure of the first housing, second limiting member, third limiting member, first conductive terminal, and second conductive terminal in the device for detecting the connection force of wire harness and terminal provided in the embodiments of this application. Figure 7 This is a perspective view of the trigger, the first limiting member, and the first conductive member in the device for detecting the connection force between wire harnesses and terminals provided in the embodiments of this application. Figure 8The circuit diagram provided in this application embodiment is for a device for detecting the connection force of wire harness and terminal. The device for detecting the connection force of wire harness and terminal provided in this application embodiment also includes a third limiting member 110, a first conductive terminal 111, a second conductive terminal 112, a first conductive member 120, and a first circuit 130.

[0037] Specifically, along the first direction X, the third limiting member 110 and the second limiting member 92 are spaced apart. The third limiting member 110 is located on the side of the second limiting member 92 away from the first housing 20 and is fixedly connected to the first housing 20.

[0038] Specifically, the first conductive terminal 111 and the second conductive terminal 112 are disposed on the third limiting member 110. Along the first direction X, the first conductive terminal 111 and the second conductive terminal 112 are disposed on the side of the third limiting member 110 close to the second limiting member 92. The first conductive terminal 111 is connected to the control power supply, and the second conductive terminal 112 is connected to the first circuit 130.

[0039] Specifically, the first conductive element 120 is insulated from the trigger element 90. The first conductive element 120 is disposed between the second limiting element 92 and the third limiting element 110. Along the first direction X, the orthographic projection of the first conductive element 120 at least partially overlaps with the orthographic projection of the first conductive terminal 111 and the second conductive terminal 112. In the detection state, the first conductive element 120 is connected to the first conductive terminal 111 and the second conductive terminal 112 to make the first conductive terminal 111 and the second conductive terminal 112 pass through. After the detection state, the first conductive element 120 is disconnected from the first conductive terminal 111 and the second conductive terminal 112 to make the first conductive terminal 111 and the second conductive terminal 112 open circuit.

[0040] Specifically, the input terminal of the first circuit 130 is connected to the second conductive terminal 112. When the second conductive terminal 112 and the first conductive terminal 111 are connected, the first circuit 130 is energized and activated. The output terminal of the first circuit 130 is connected to the motor 80 and is used to control the forward and reverse rotation of the motor 80.

[0041] In some embodiments, in the device for detecting the connection force of wire harness and terminals provided in this application, the first circuit 130 includes a first relay 131, which is connected to the motor 80 to control the forward and reverse rotation of the motor 80 through the operation of the first relay 131.

[0042] Specifically, the input terminal of the first relay 131 is connected to the second conductive terminal 112. The first relay 131 includes a first switch group 132 and a second switch group 140, and the first switch group 132 and the second switch group 140 operate synchronously.

[0043] In some embodiments, the first switch group 132 includes a first switch element 133, a first terminal 134, and a second terminal 135. The first switch element 133 is connected to a first power supply terminal of the motor 80, the first terminal 134 is connected to a drive power supply, and the second terminal 135 is grounded. The first switch element 133 and the first terminal 134 form a normally closed switch, and the first switch element 133 and the second terminal 135 form a normally open switch. When the first relay 131 is de-energized, the first switch element 133 and the first terminal 134 are connected, and the drive power supply is connected through the first terminal 135. A terminal 134, a first switch 133, and a first power supply terminal of the motor 80 are connected to supply power to the motor 80. When the motor 80 rotates forward, the detection state between the limit member 30 and the first housing 20 is released. When the first relay 131 is energized, the first switch 133 is activated, opening the circuit with the first terminal 134 and connecting the circuit with the second terminal 135, grounding the motor 80 through the first power supply terminal, the first switch 133, and the second terminal 135. The motor 80 rotates in reverse, causing the limit member 30 and the first housing 20 to enter the detection state.

[0044] Specifically, the second switch group 140 includes a second switch element 141, a third terminal 142, and a fourth terminal 143. The second switch element 141 is connected to the second power supply terminal of the motor 80, the third terminal 142 is grounded, and the fourth terminal 143 is connected to the drive power supply. The second switch element 141 and the third terminal 142 form a normally closed switch, and the second switch element 141 and the fourth terminal 143 form a normally open switch. When the first relay 131 is de-energized, the second switch element 141 and the third terminal 142 are connected, thus energizing the motor 80. When the second power terminal, the second switch 141, and the third wiring terminal 142 are grounded, the motor 80 rotates forward, releasing the detection state between the limit member 30 and the first housing 20. When the first relay 131 is energized, the second switch 141 operates, opening the circuit with the third wiring terminal 142 and connecting with the fourth wiring terminal 143. The drive power supply is connected to the motor 80 through the fourth wiring terminal 143, the second switch 141, and the second power terminal of the motor 80, supplying power to the motor 80. The motor 80 reverses, causing the limit member 30 and the first housing 20 to enter the detection state.

[0045] Understandably, when the first relay 131 is energized, the first switch 133 and the second switch 141 are linked together, and the first switch 133 and the second switch 141 operate synchronously when the first relay 131 is energized, thereby realizing synchronous circuit switching.

[0046] In some embodiments, the device for detecting the connection force of wire harness and terminals provided in this application further includes a second circuit 150. The second circuit 150 includes a second relay 151. The input terminal of the second relay 151 is connected to an external control button. The second relay 151 includes a third switch group 152 and a fourth switch group 160. The second relay 151 controls the third switch group 152 and the fourth switch group 160 to operate synchronously.

[0047] Specifically, the third switch group 152 includes a third switch element 153, a fifth terminal block 154, and a sixth terminal block 155. The third switch element 153 is connected to the first power supply terminal of the motor 80; the fifth terminal block 154 is connected to the drive power supply and is connected in parallel with the first terminal block 134, the second terminal block 135, and the sixth terminal block 155; the sixth terminal block 155 is connected in series with the first switch element 133; the third switch group 152 and the fifth terminal block 154 form a normally open switch, and the third switch group 152 and the sixth terminal block 155 form a normally closed switch; understandably, when the terminal under test is being normally tested, the second relay... When electrical appliance 151 loses power, the third switch 153 and the fifth terminal 154 are open-circuited, and the third switch 153 and the sixth terminal 155 are connected. The third switch 153 connects the circuit between the first switch 133 and the first power supply terminal of the motor 80. After the terminal under test is tested, the external control button is pressed, the second relay 151 is energized, the third switch 153 and the fifth terminal 154 are connected, and the third switch 153 and the sixth terminal 155 are open-circuited. The third switch 153 connects the motor 80 to the external power supply, and the motor 80 enters the forward rotation state, causing the limit member 30 and the first housing 20 to exit the testing state.

[0048] Specifically, the fourth switch group 160 includes a fourth switch element 161, a seventh terminal 162, and an eighth terminal 163. The fourth switch element 161 is connected to the second power supply terminal of the motor 80; the seventh terminal 162 is grounded; the eighth terminal 163 is connected in series with the second switch element 161; the fourth switch element 161 and the eighth terminal 163 form a normally closed switch, and the fourth switch element 161 and the seventh terminal 162 form a normally open switch. Understandably, when the terminal under test is being normally tested, the second relay 151 is de-energized, and the fourth switch element 161 and the seventh terminal 162 are connected in series. The seventh terminal 162 is open, the fourth switch 161 is connected to the eighth terminal 163, and the fourth switch 161 connects the circuit between the second switch 141 and the second power supply terminal of the motor 80. After the terminal to be tested is tested, the external control button is pressed, the second relay 151 is energized, the fourth switch 161 is connected to the seventh terminal 162, the fourth switch 161 is open to the eighth terminal 163, the fourth switch 161 grounds the motor 80, the motor 80 enters the forward rotation state, and the limit member 30 and the first housing 20 exit the testing state.

[0049] Understandably, the device for detecting the connection force of wire harnesses and terminals provided in this application embodiment includes a frame 10, a first housing 20, a limiting member 30, and a pressure sensor 40; the first housing 20 has a first direction X, a second direction Y, and a third direction Z that are intersected; the first housing 20 is disposed on the frame 10 and extends along the first direction X; the first housing 20 includes a first housing wall 21, which encloses to form a first chamber 22; in the first direction X, one end of the first housing wall 21 has a first through hole 23, which communicates with the first chamber 22 so that the terminal to be tested enters the first chamber 22 through the first through hole 23; The limiting member 30 is connected to the frame 10, and the limiting member 30 and the frame 10 are in a detection state. In the detection state, along the first direction X, the limiting member 30 is disposed on the side of the first housing 20 with the first through hole 23, and the orthographic projection of the limiting member 30 at least partially passes through the first through hole 23. The pressure sensor 40 is connected to the limiting member 30. In the detection state, the pressure sensor 40 is disposed on the side of the limiting member 30 close to the first housing 20, and along the first direction X, the orthographic projection of the pressure sensor 40 passes through the first through hole 23, so that in the detection state, the terminal to be tested can abut against the pressure sensor 40 under the pull of the wire harness to detect the connection force between the wire harness and the terminal.

[0050] Accordingly, embodiments of this application also provide a method for detecting the connection force between wire harnesses and terminals; please refer to [link to relevant documentation]. Figure 9 , Figure 9The flowchart illustrates the steps of a method for detecting the connection force of wire harnesses and terminals provided in this application. The method for detecting the connection force of wire harnesses and terminals provided in this application is applied to the apparatus for detecting the connection force of wire harnesses and terminals provided in this application, and includes: Step 100: Obtain the terminal and wiring harness to be tested, and connect the terminal and wiring harness; Step 200: Insert the terminal into the first chamber 22 through the first through hole 23; Step 300: In response to the limit member 30 and the first housing 20 being in a detection state, the wire harness is pulled so that the terminal abuts against the pressure sensor 40, and the output data of the pressure sensor 40 is obtained as the connection force between the wire harness and the terminal.

[0051] In some embodiments, when the device is in standby mode, the elastic member 93 relaxes, abutting the first limiting member 91 against the wall of the first housing 20. The first conductive member 120 is disconnected from the first conductive terminal 111 and the second conductive terminal 112, the first conductive terminal 111 and the second conductive terminal 112 are open-circuited, the first relay 131 is de-energized, the first switch member 133 is normally closed connected to the first terminal 134, the second switch member 141 is normally closed connected to the third terminal 142, the second relay 151 is de-energized, the third switch member 153 is normally closed connected to the sixth terminal 155, the fourth switch member 161 is normally closed connected to the eighth terminal 163, the first power supply terminal of the motor 80 is connected to the drive power supply, the second power supply terminal of the motor 80 is grounded, the motor 80 rotates forward, and the device drives the limiting member 30 and the first housing 20 to leave the detection state.

[0052] In some embodiments, when the device performs a detection operation, the terminal to be tested is inserted into the first chamber 22 through the first through hole 23. The terminal to be tested abuts against the trigger 90. The trigger 90 drives the first conductive element 120 to abut against the first conductive terminal 111 and the second conductive terminal 112, thus establishing a circuit between the first conductive terminal 111 and the second conductive terminal 112. The first relay 131 is energized, the first switch 133 is normally connected to the second terminal 135, the second switch 141 is normally connected to the fourth terminal 143, the second relay 151 is de-energized, the third switch 153 is normally closed to the sixth terminal 155, the fourth switch 161 is normally closed to the eighth terminal 163, the second power terminal of the motor 80 is connected to the drive power supply, the first power terminal of the motor 80 is grounded, the motor 80 reverses direction, and the device drives the limiting element 30 and the first housing 20 to enter the detection state.

[0053] In some embodiments, when the device completes the detection operation, pressing the external control button energizes the second relay 151, the third switch 153 is normally connected to the fifth terminal 154, the fourth switch 161 is normally connected to the seventh terminal 162, the first power supply terminal of the motor 80 is connected to the drive power supply, the second power supply terminal of the motor 80 is grounded, the motor 80 rotates forward, and the device drives the limiting member 30 and the first housing 20 to leave the detection state.

[0054] This application has provided a detailed description of an apparatus and method for detecting the connection force of wire harnesses and terminals, as provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A device for detecting the connection force of wire harnesses and terminals, characterized in that, include: The frame (10) has a first direction (X), a second direction (Y) and a third direction (Z) that are intersected. A first housing (20) extends along the first direction (X) and is connected to the frame (10); the first housing (20) includes a first housing wall (21) that encloses a first chamber (22); along the first direction (X), one end of the first housing wall (21) has a first through hole (23) that communicates with the first chamber (22); A limiting member (30) is connected to the frame (10). The limiting member (30) and the first housing (20) have a detection state: along the first direction (X), the limiting member (30) is disposed on the side of the first housing (20) having the first through hole (23), and the orthographic projection of the limiting member (30) at least partially passes through the first through hole (23); A pressure sensor (40) is connected to the limiting member (30). In the detection state, the pressure sensor (40) is disposed on the side of the limiting member (30) near the first housing (20). Along the first direction (X), the orthogonal projection of the pressure sensor (40) passes through the first through hole (23).

2. The device for detecting the connection force of wire harnesses and terminals according to claim 1, characterized in that, Along the third direction (Z), the limiting member (30) is slidably connected to the frame (10).

3. The device for detecting the connection force of wire harnesses and terminals according to claim 2, characterized in that, Also includes: A first transmission member (50) is hinged to the limiting member (30) and is used to drive the limiting member (30) to move along the third direction (Z); along the extension direction of the first transmission member (50), the first transmission member (50) is provided with a sliding groove (51); A first connector (60) is connected to the frame (10), at least a portion of the first connector (60) passes through the sliding groove (51) and is slidably connected to the sliding groove (51) along the length direction of the sliding groove (51); The first transmission member (50) can rotate around the outer surface of the first connector (60) via the inner surface of the sliding groove (51).

4. The device for detecting the connection force of wire harnesses and terminals according to claim 3, characterized in that, Also includes: The second transmission member (70) includes a body (71) and a second connecting member (72). The body (71) is slidably connected to the frame (10) along the third direction (Z). The body (71) is connected to the second connecting member (72). At least a portion of the second connecting member (72) rotatably passes through the sliding groove (51) and is slidably connected to the sliding groove (51) along the length direction of the sliding groove (51). The first transmission member (50) can rotate around the outer surface of the second connecting member (72) through the inner surface of the sliding groove (51). An electric motor (80) is connected to the main body (71) for driving the main body (71) to move along the third direction (Z).

5. The apparatus for detecting the connection force of wire harnesses and terminals according to claim 4, characterized in that, The main body (71) is provided with a rack arranged along the third direction (Z), and the output end of the motor (80) is provided with a gear, which meshes with the rack for transmission.

6. The apparatus for detecting the connection force of wire harnesses and terminals according to claim 4, characterized in that, Also includes: A trigger (90) is provided through the first housing wall (21) and partially disposed in the first chamber (22) and partially disposed outside the first housing (20); the trigger (90) includes a first limiting member (91) disposed on the outer wall of the trigger (90) and disposed outside the first housing (20), for abutting against the first housing wall (21) when the trigger (90) moves relative to the first housing wall (21) in the first direction (X) to limit the length of the trigger (90) penetrating into the first chamber (22); The second limiting member (92) is connected to the first housing wall (21) and disposed outside the first housing (20); An elastic element (93) is connected to the trigger element (90). The elastic direction of the elastic element (93) extends along the first direction (X), and the two ends of the elastic element (93) are respectively connected to the first limiting element (91) and the second limiting element (92) along the first direction (X).

7. The apparatus for detecting the connection force of wire harnesses and terminals according to claim 6, characterized in that... It also includes: The third limiting member (110) is arranged along the first direction (X), and the third limiting member (110) is spaced apart from the second limiting member (92). The third limiting member (110) is located on the side of the second limiting member (92) away from the first housing (20). The first conductive terminal (111) and the second conductive terminal (112) are disposed on the third limiting member (110). The first conductive terminal (111) is connected to the control power supply. Along the first direction (X), the first conductive terminal (111) and the second conductive terminal (112) are disposed on the side of the third limiting member (110) close to the second limiting member (92). A first conductive element (120) is insulated from the trigger element (90). The first conductive element (120) is disposed between the second limiting element (92) and the third limiting element (110). Along the first direction (X), the orthographic projection of the first conductive element (120) at least partially coincides with the orthographic projection of the first conductive terminal (111) and the second conductive terminal (112). In the detection state, the first conductive element (120) is connected to the first conductive terminal (111) and the second conductive terminal (112). A first circuit (130) is connected to the second conductive terminal (112) at its input end and to the motor (80) at its output end, for controlling the forward and reverse rotation of the motor (80).

8. The apparatus for detecting the connection force of wire harnesses and terminals according to claim 7, characterized in that... The first circuit (130) includes: A first relay (131), the input terminal of the first relay (131) being connected to the first conductive terminal (111) and the second conductive terminal (112), the first relay (131) comprising: The first switch group (132) includes a first switch element (133), a first terminal (134), and a second terminal (135). The first switch element (133) is connected to the first power supply terminal of the motor (80), the first terminal (134) is connected to the drive power supply, and the second terminal (135) is grounded. The first switch element (133) and the first terminal (134) form a normally closed switch, and the first switch element (133) and the second terminal (135) form a normally open switch. The second switch group (140) includes a second switch element (141), a third terminal (142), and a fourth terminal (143). The second switch element (141) is connected to the second power supply terminal of the motor (80), the third terminal (142) is grounded, and the fourth terminal (143) is connected to the power supply. The second switch element (141) and the third terminal (142) form a normally closed switch, and the second switch element (141) and the fourth terminal (143) form a normally open switch. The first switch (133) and the second switch (141) operate synchronously.

9. The apparatus for detecting the connection force of wire harnesses and terminals according to claim 8, characterized in that, It also includes a second circuit (150), which includes: A second relay (151) has an external control button connected to its input terminal. The second relay (151) includes: A third switch group (152) includes a third switch element (153), a fifth terminal block (154), and a sixth terminal block (155). The third switch element (153) is connected to the first power supply terminal. The fifth terminal block (154) is connected to the driving power supply and is connected in parallel with the first terminal block (134), the second terminal block (135), and the sixth terminal block (155). The sixth terminal block (155) is connected in series with the first switch element (133). The third switch group (152) and the fifth terminal block (154) form a normally open switch, and the third switch group (152) and the sixth terminal block (155) form a normally closed switch. The fourth switch group (160) includes a fourth switch element (161), a seventh terminal (162), and an eighth terminal (163). The fourth switch element (161) is connected to the second power supply terminal; the seventh terminal (162) is grounded; the eighth terminal (163) is connected in series with the second switch element (141); the fourth switch element (161) and the eighth terminal (163) form a normally closed switch, and the fourth switch element (161) and the seventh terminal (162) form a normally open switch.

10. A method for detecting the connection force of wire harnesses and terminals, characterized in that, An apparatus for detecting the connection force of wire harnesses and terminals as described in any one of claims 1 to 9, comprising: Obtain the terminal and wiring harness to be tested, and connect the terminal and the wiring harness; Insert the terminal into the first chamber (22) through the first through hole (23); In response to the limiting member (30) and the first housing (20) being in a detection state, the wire harness is pulled so that the terminal abuts against the pressure sensor (40), and the output data of the pressure sensor (40) is obtained as the connection force between the wire harness and the terminal.

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