A wire pressing device and a testing system capable of identifying the crimping state

Abstract

The present invention discloses a wire pressing device and a test system capable of identifying the crimping state, which solves the problem that the existing wire pressing terminals cannot confirm whether the wire crimping is good. The wire pressing device specifically includes a wire pressing terminal seat and a plurality of wire pressing terminals; a plurality of compression springs are arranged in the wire pressing terminal seat; the wire pressing terminal includes a button, a limiting block and a PCB board; the lower end of the button is inserted into the wire pressing terminal seat and abuts against the corresponding compression spring, and a U-shaped mounting cavity is arranged at the bottom of the button, and a convex rib is arranged on each of the two parallel inner walls of the U-shaped mounting cavity; the limiting block is inserted into the U-shaped mounting cavity, and both ends thereof protrude outside the button and are detachably connected to the wire pressing terminal seat; the PCB board is arranged on the upper surfaces of the two convex ribs and below the limiting block, and two unconnected identification wires are connected to the bottom of the PCB board, and are used to connect the two identification wires through the wire to be tested crimped between the PCB board and the limiting block under the action of the compression spring, so as to identify the crimping state of the wire to be tested.

Description

Technical Field

[0001] The present invention relates to a wire pressing device and a testing system, and more particularly to a wire pressing device and a testing system capable of identifying the crimping state. Background Art

[0002] In the production process of many electronic products, some of the externally led-out parts are loose wires. If the product needs to be tested, generally, additional wires need to be welded, and then removed after the test is completed, which undoubtedly greatly increases the test workload. Using a wire pressing terminal is a means to quickly connect and disconnect wires. Traditional wire pressing terminals use conductive materials to crimp wires, but due to the presence of insulating wire sheaths on the wires, it is impossible to confirm whether the crimping is good. In the case of a large number of wires, it is impossible to quickly confirm whether it is a product quality problem or a wire crimping problem, resulting in very cumbersome troubleshooting work. Therefore, there is an urgent need for a wire pressing device that can quickly determine whether the crimping state is good after the wiring is completed. Summary of the Invention

[0003] In order to solve the technical problem that the existing wire pressing terminals cannot confirm whether the wire crimping state is good, the present invention provides a wire pressing device and a testing system capable of identifying the crimping state.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a wire pressing device capable of identifying the crimping state, which is characterized in that:

[0006] It includes a wire pressing terminal seat and N wire pressing terminals, where N≥1 and is a positive integer;

[0007] N compression springs corresponding to the N wire pressing terminals are arranged side by side in the wire pressing terminal seat; the bottom of the compression spring abuts against the wire pressing terminal;

[0008] The wire pressing terminal includes a button, a limiting block, and a PCB board;

[0009] The lower end of the button passes through the wire pressing terminal seat, and its lower end abuts against the top of the corresponding compression spring. An open-down U-shaped installation cavity is provided at the bottom of the button. On the two parallel inner walls of the U-shaped installation cavity, there is respectively a convex rib parallel to the bottom of the U-shaped installation cavity. The upper surfaces of the two convex ribs are on the same horizontal plane;

[0010] The limiting block passes through the U-shaped installation cavity, is located above the convex rib, and both ends protrude outside the button and are detachably connected to the wire pressing terminal seat for limiting the downward stroke of the button;

[0011] The PCB board is disposed on the upper surfaces of the two convex ribs and below the limit block. Two unconnected identification wires are connected to the bottom of the PCB board; the identification wires 4 are used to connect to an external testing device; the PCB board is used to connect the two identification wires through the test wire crimped between the PCB board and the limit block under the resilience of the compression spring, so as to identify the crimping state of the test wire.

[0012] Further, the PCB board includes a substrate, a first pad and a second pad disposed on the upper surface of the substrate, and a third pad and a fourth pad disposed on the lower surface of the substrate;

[0013] The first pad and the third pad are interconnected;

[0014] The second pad and the fourth pad are interconnected;

[0015] The third pad and the fourth pad are respectively connected to the two identification wires.

[0016] Further, the wire crimping terminal block includes a top plate, a front side plate, a bottom plate and a rear side plate;

[0017] The top plate, the front side plate, the bottom plate and the rear side plate are sequentially connected end to end to form a square tube;

[0018] An installation bump is provided between the top plate and the front side plate; N vertically through stepped holes are arranged side by side in the installation bump along the horizontal direction of the top plate; the stepped holes include a small hole, a middle hole and a large hole arranged in sequence from bottom to top; a first step surface is formed between the small hole and the middle hole, and a second step surface is formed between the middle hole and the large hole;

[0019] N first installation holes corresponding to the large holes are provided on the top plate; N second installation holes corresponding to the large holes are provided on the front side plate for installing the test wire; N third installation holes corresponding to the small holes are provided on the bottom plate; the lower end of the button is inserted into the corresponding first installation hole and large hole; one end of the limit block protruding from the button is inserted into the side wall of the corresponding large hole, and the other end protruding from the button is detachably connected to the front side plate; the PCB board is located in the corresponding large hole;

[0020] N compression springs are installed in N middle holes, the bottom ends thereof abut against the corresponding first step surfaces, and the top ends thereof abut against the bottom surface of the corresponding button; the two identification wires are inserted into the corresponding compression springs and sequentially pass through the corresponding small holes and third installation holes.

[0021] Further, the limit block is made of resin;

[0022] A metal nut is embedded in the middle of the limit block;

[0023] There are N fourth mounting holes on the front side plate corresponding to the limiting blocks one by one; a metal screw is arranged in each fourth mounting hole; the head of the metal screw is embedded in the front side plate, and its tail passes through the front side plate and the limiting block and is threadedly connected with the metal nut, realizing the detachable connection between the limiting block and the front side plate.

[0024] Further, a prism is respectively arranged below each convex rib;

[0025] The two prisms are parallel to each other and are arranged in the compression spring.

[0026] Further, a limiting groove corresponding to the second mounting hole is arranged on the side wall of each large hole for restricting the extending length of the wire to be measured.

[0027] Further, a connecting reinforcement plate is arranged between the opposite surfaces of the two prisms.

[0028] Further, the bottom surface of the limiting block is serrated;

[0029] The top surface of the button is provided with a downward concave arc groove, and arc chamfers are arranged at its edges.

[0030] The rear side plate is detachably connected to the bottom plate and the top plate respectively.

[0031] The present invention also provides a test system capable of identifying the crimping state, which is characterized in that:

[0032] It includes the wire crimping device capable of identifying the crimping state as described above;

[0033] It further includes N test devices;

[0034] The N test devices correspond to the N wire crimping terminals one by one;

[0035] Two identification wires connected to the same PCB board are connected to the same test device.

[0036] Further, the test device is a multimeter.

[0037] The beneficial effects of the present invention:

[0038] 1. For the wire crimping device capable of identifying the crimping state provided by the present invention, a PCB board is arranged inside the wire crimping terminal, and two identification wires are connected to the PCB board. The wire to be measured is pressed on the PCB board through the limiting block, and it can be observed whether the two identification wires are connected, so as to accurately judge the crimping state of the wire to be measured, which is convenient and fast.

[0039] 2. The PCB board in the present invention is provided with four pads. The first pad and the second pad are arranged on the upper surface of the substrate and are not connected. The third pad and the fourth pad are arranged on the lower surface of the substrate and are respectively connected to the first pad and the second pad. When the wire to be tested is pressed between the first pad and the second pad, if the crimping state is good, the first pad and the second pad are connected, and then the two identification wires are connected; otherwise, they are not. By testing the two identification wires, the crimping state of the wire to be tested can be quickly and accurately judged, thus greatly improving the test efficiency.

[0040] 3. The present invention is provided with a crimping terminal seat that cooperates with the crimping terminal. The crimping terminal seat is provided with a stepped hole, in which a compression spring is arranged, and a second mounting hole corresponding to the large hole is arranged on the front side plate. By pressing the button to compress the compression spring in the crimping terminal seat, the wire to be tested is placed through the second mounting hole. After releasing the hand, the compression spring pushes the button upward, and the wire to be tested can be crimped between the PCB board and the limit block. The operation is simple and fast, which is beneficial to improving the test efficiency.

[0041] 4. The crimping terminal seat provided by the present invention can be installed with N crimping terminals. Its structure is simple, easy to manufacture, and can adapt to more and more complex application scenarios.

[0042] 5. The limit block of the present invention is made of resin, and a metal nut is embedded in the limit block. Then, the detachable connection between the limit block and the front side plate is realized through the cooperation of the metal screw and the metal nut, which can reduce the production cost and ensure the reliability of its connection at the same time, achieving two goals with one action.

[0043] 6. A prism is arranged at the bottom of the button of the present invention, and the prism extends into the compression spring to play a guiding role when the compression spring expands and contracts, thereby improving the stability of the entire crimping device.

[0044] 7. A limit groove is arranged on the side wall of the large hole in the installation bump of the present invention, which can limit the insertion length of the wire to be tested, so as to confirm whether the wire to be tested is installed in place, improving the test efficiency.

[0045] 8. A connection reinforcement plate is also arranged between the two prisms of the present invention, which can increase the stability of the button, making it more reassuring to use and the overall structure more reliable.

[0046] 9. The bottom surface of the limit block of the present invention is set to be serrated, and the serrations can increase the friction force, avoid the wire to be tested from slipping during the test, and improve the test reliability of the crimping device.

[0047] 10. An arc groove and an arc chamfer are arranged on the top surface of the button of the present invention, which can reduce the discomfort caused by long-term pressing and improve the comfort of operation. Description of the Drawings

[0048] Figure 1It is a schematic structural diagram of an embodiment of a wire pressing device capable of identifying the crimping state according to the present invention;

[0049] Figure 2 It is a schematic structural diagram of a wire pressing terminal with a compression spring sleeved in an embodiment of the present invention;

[0050] Figure 3 It is a schematic structure of a button in an embodiment of the present invention Figure 1 ;

[0051] Figure 4 It is a schematic structure of a button in an embodiment of the present invention Figure 2 ;

[0052] Figure 5 It is a schematic diagram of the upper surface of a PCB board in an embodiment of the present invention;

[0053] Figure 6 It is a schematic diagram of the lower surface of a PCB board in an embodiment of the present invention;

[0054] Figure 7 It is a schematic structural diagram of a wire pressing terminal seat in an embodiment of the present invention;

[0055] Figure 8 It is a cross-sectional view of a wire pressing device capable of identifying the crimping state in an embodiment of the present invention;

[0056] Figure 9 It is a sectional view of a wire pressing device capable of identifying the crimping state in an embodiment of the present invention.

[0057] Reference numerals in the drawings:

[0058] 1 - wire pressing terminal seat, 11 - top plate, 111 - first mounting hole, 12 - front side plate, 121 - second mounting hole, 122 - fourth mounting hole, 13 - bottom plate, 131 - third mounting hole, 14 - rear side plate, 15 - compression spring, 16 - mounting bump, 161 - small hole, 162 - middle hole, 163 - large hole, 164 - first step surface, 165 - second step surface, 166 - limiting groove;

[0059] 2 - wire pressing terminal, 21 - button, 211 - U-shaped mounting cavity, 212 - convex rib, 213 - prism, 214 - connecting reinforcement plate, 22 - limiting block, 221 - metal nut, 222 - metal screw, 23 - PCB board, 230 - substrate, 231 - first pad, 232 - second pad, 233 - third pad, 234 - fourth pad;

[0060] 3 - wire to be measured;

[0061] 4 - identification wire. Detailed implementation manners

[0062] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0063] An embodiment of the present invention provides a wire pressing device capable of identifying the crimping state, as Figure 1 shown, which includes a wire pressing terminal seat 1 and N wire pressing terminals 2, where N≥1 and is a positive integer; in this embodiment, N = 8, and in other embodiments, N can be set to 6, 9, 10, etc. according to requirements.

[0064] As Figure 2 shown, the wire pressing terminal 2 includes a button 21, a limit block 22, and a PCB board 23.

[0065] As Figure 3 and Figure 4 shown, the lower end of the button 21 is inserted into the wire pressing terminal seat 1. There is a U-shaped installation cavity 211 with an opening downward at the bottom of the button 21. On the two parallel inner walls of the U-shaped installation cavity 211, there is respectively a convex rib 212 parallel to the bottom of the U-shaped installation cavity 211. The upper surfaces of the two convex ribs 212 are on the same horizontal plane; there is a prism 213 respectively below each convex rib 212; the two prisms 213 are parallel to each other, and there is a connecting reinforcement plate 214 between the opposite faces of the two prisms 213. The two prisms 213 and the connecting reinforcement plate 214 are all inserted into the compression spring 15 of the wire pressing terminal seat 1 for pressing and guiding. The top surface of the button 21 is provided with a downward concave arc groove, and the edges thereof are all provided with arc chamfers, which is beneficial to improving the pressing comfort.

[0066] The limit block 22 is inserted into the U-shaped installation cavity 211 and is located above the convex rib 212. Its two ends protrude outside the button 21 and are detachably connected to the wire pressing terminal seat 1 for pressing the wire to be measured 3; in order to reduce costs, the limit block 22 in this embodiment is made of resin; at the same time, in order to improve the stability of the entire structure, a metal nut 221 is embedded in the middle of the limit block 22 in this embodiment; the bottom surface of the limit block 22 is provided as serrated, which can increase the friction between the limit block 22 and the wire to be measured 3 and prevent the wire to be measured 3 from slipping during measurement.

[0067] As Figure 5 and Figure 6As shown, the PCB board 23 is disposed on the upper surface of the two convex ribs 212 and below the limit block 22. The PCB board 23 includes a substrate 230, a first pad 231 and a second pad 232 disposed on the upper surface of the substrate 230, a third pad 233 and a fourth pad 234 disposed on the lower surface of the substrate 230; the first pad 231 and the third pad 233 are interconnected; the second pad 232 and the fourth pad 234 are interconnected; the areas of the first pad 231 and the second pad 232 are both larger than the areas of the third pad 233 and the fourth pad 234; the first pad 231 and the second pad 232 with larger areas are used to connect the wire under test 3; the third pad 233 and the fourth pad 234 are respectively connected to an identification wire 4; then when the first pad 231 and the second pad 232 are connected by the wire under test 3, the two identification wires 4 are connected; the identification wire 4 is used to connect an external test device.

[0068] As Figure 7 shown, the wire pressing terminal block 1 includes a top plate 11, a front side plate 12, a bottom plate 13, a rear side plate 14 and eight compression springs 15; the top plate 11, the front side plate 12, the bottom plate 13 and the rear side plate 14 are sequentially connected end to end to form a square tube; in this embodiment, it further includes a left side plate and a right side plate installed at both ends of the square tube, together with the square tube to form a rectangular box body. The rear side plate 14 is detachably connected to the bottom plate 13, the top plate 11, the left side plate and the right side plate respectively.

[0069] As Figure 8 and Figure 9 shown, an installation bump 16 is provided between the top plate 11 and the front side plate 12; eight step holes penetrating up and down are arranged side by side along the horizontal direction of the top plate 11 in the installation bump 16; the step holes include small holes 161, middle holes 162 and large holes 163 arranged in sequence from bottom to top; a first step surface 164 is formed between the small hole 161 and the middle hole 162 of each step hole, and a second step surface 165 is formed between the middle hole 162 and the large hole 163.

[0070] Eight first installation holes 111 corresponding to and communicating with the large holes 163 are provided on the top plate 11; eight second installation holes 121 corresponding to and communicating with the large holes 163 are provided on the front side plate 12 for installing the wire under test 3; eight third installation holes 131 corresponding to the small holes are provided on the bottom plate 13; the lower end of the button 21 is inserted into the corresponding first installation hole 111 and the large hole 163; one end of the limit block 22 protruding from the button 21 is inserted into the side wall of the corresponding large hole 163, and the other end protruding from the button 21 is detachably connected to the front side plate 12; the PCB board 23 is located in the corresponding large hole 163; a limit groove 166 corresponding to the second installation hole 121 is provided on the side wall of each large hole 163 for limiting the extending length of the wire under test 3.

[0071] Eight compression springs 15 are installed in eight middle holes 162; the bottom end of each compression spring 15 abuts against the corresponding first step surface 164, and the top end of each compression spring 15 abuts against the bottom surface of the corresponding button 21; two identification wires 4 are arranged in the corresponding compression springs 15 and pass through the corresponding small holes 161 and the third installation holes 131 in sequence to connect to the test equipment.

[0072] Eight fourth installation holes 122 corresponding to the limiting blocks 22 one by one are provided on the front side plate 12; metal screws 222 are arranged in each of the fourth installation holes 122; the heads of the metal screws 222 are embedded in the front side plate 12, and their tails pass through the front side plate 12 and the limiting blocks 22 and are threadedly connected with metal nuts 221, realizing the detachable connection between the limiting blocks 22 and the front side plate 12.

[0073] Its using process includes the following steps:

[0074] Step 1, installation;

[0075] Open the rear side plate 14 of the wire pressing terminal block 1;

[0076] Taking the installation of one of the wire pressing terminals 2 on the wire pressing terminal block 1 as an example, first pass the two identification wires 4 from bottom to top through the third installation holes 131 on the bottom plate 13, then through the step holes on the installation bumps 16, put the compression springs 15 on the two identification wires 4, and put the compression springs 15 into the step holes and fall into the small holes 161. Place the PCB board 23 on the upper surfaces of the two convex edges 212 of the button 21, connect the two identification wires 4 to the third solder pads 233 and the fourth solder pads 234 on the PCB board respectively. Put the PCB board 23 connected with the identification wires 4 and the button 21 into the step holes together, so that the prism 213 and the connection reinforcement plate 214 at the bottom of the button 21 extend into the compression spring 15, and the bottom of the button 21 contacts the top surface of the compression spring 15. At this time, pass the limiting block 22 embedded with the metal nut 221 through the large hole 163 of the step hole from the installation bump 16, and then pass the metal screw 222 through the corresponding second installation hole 121 on the front side plate 12 and thread it with the metal nut 221. The whole limiting block 22 is square, so just rotate the metal screw 222 directly; the installation steps of other wire pressing terminals 2 are the same.

[0077] After all the wire pressing terminals 2 are installed in place, then connect the rear side plate 14 with the top plate 11, the bottom plate 13, the left side plate and the right side plate, and the whole wire pressing device is installed.

[0078] Step 2, testing;

[0079] Press the button 21, the compression spring 15 is compressed, an installation space appears between the PCB board 23 and the limit block 22, insert the wire 3 to be tested into this installation space until the end face of the wire 3 to be tested contacts the bottom of the limit groove 166 on the inner wall of the large hole 163, release the button 21, the compression spring 15 rebounds and pushes the button 21 upward, then the wire 3 to be tested is crimped between the PCB board 23 and the limit block 22;

[0080] Measure whether the two identification wires 4 connected to the same PCB board 23 are connected;

[0081] If they are connected, it means that the wire 3 to be tested has connected the first pad 231 and the second pad 232 on the PCB board 23, that is, the crimping state of the wire 3 to be tested is good;

[0082] Otherwise, it means that the wire 3 to be tested has not connected the first pad 231 and the second pad 232 on the PCB board 23, then the wire 3 to be tested has not achieved effective crimping.

[0083] This embodiment also provides a test system capable of identifying the crimping state, including the above-mentioned wire crimping device capable of identifying the crimping state, and also including 8 test devices; the 8 test devices correspond to the 8 crimping terminals 2 one by one; the two identification wires 4 connected to the same PCB board 23 are connected to the same test device, and each test device is used to measure whether the two identification wires 4 connected to the same PCB board 23 are connected, so as to achieve the identification function. In this embodiment, the test device is a multimeter, but it is not limited to a multimeter.

[0084] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A wire pressing device capable of identifying the crimping state, characterized in that: It includes a wire pressing terminal base (1) and N wire pressing terminals (2), where N≥1 and is a positive integer; Inside the wire pressing terminal base (1), N compression springs (15) corresponding one by one to the N wire pressing terminals (2) are arranged side by side; the bottom of the compression spring (15) abuts on the wire pressing terminal (2); The wire pressing terminal (2) includes a button (21), a limit block (22), and a PCB board (23); The lower end of the button (21) passes through the wire pressing terminal base (1), and its lower end abuts on the top of the corresponding compression spring (15). The bottom of the button (21) is provided with a U-shaped mounting cavity (211) with an opening downward. On the two parallel inner walls of the U-shaped mounting cavity (211), a rib (212) parallel to the bottom of the U-shaped mounting cavity (211) is respectively provided. The upper surfaces of the two ribs (212) are located on the same horizontal plane; The limit block (22) passes through the U-shaped mounting cavity (211), is located above the rib (212), and its two ends protrude outside the button (21) and are detachably connected to the wire pressing terminal base (1) for restricting the downward stroke of the button (21); The PCB board (23) is arranged on the upper surfaces of the two ribs (212) and is located below the limit block (22). Two unconnected identification wires (4) are connected to the bottom of the PCB board (23); the identification wires (4) are used to connect to an external testing device; the PCB board (23) is used to connect the two identification wires (4) by crimping the wire to be tested (3) between the PCB board (23) and the limit block (22) under the resilience of the compression spring (15) to identify the crimping state of the wire to be tested (3).

2. The wire pressing device capable of identifying the crimping state according to claim 1, characterized in that: The PCB board (23) includes a substrate (230), a first solder pad (231) and a second solder pad (232) arranged on the upper surface of the substrate (230), and a third solder pad (233) and a fourth solder pad (234) arranged on the lower surface of the substrate (230); The first solder pad (231) and the third solder pad (233) are interconnected; The second solder pad (232) and the fourth solder pad (234) are interconnected; The third solder pad (233) and the fourth solder pad (234) are respectively connected to the two identification wires (4).

3. The wire pressing device capable of identifying the crimping state according to claim 1 or 2, characterized in that: The wire pressing terminal base (1) includes a top plate (11), a front side plate (12), a bottom plate (13), and a rear side plate (14); The top plate (11), the front side plate (12), the bottom plate (13), and the rear side plate (14) are sequentially connected end to end to form a square tube; An installation bump (16) is provided between the top plate (11) and the front side plate (12); N vertically-through step holes are arranged side by side in the installation bump (16) along the horizontal direction of the top plate (11); the step holes include a small hole (161), a middle hole (162), and a large hole (163) arranged in sequence from bottom to top; a first step surface (164) is formed between the small hole (161) and the middle hole (162), and a second step surface (165) is formed between the middle hole (162) and the large hole (163). N first installation holes (111) corresponding to and communicating with the large holes (163) one by one are provided on the top plate (11); N second installation holes (121) corresponding to and communicating with the large holes (163) one by one are provided on the front side plate (12) for installing the wire to be measured (3); N third installation holes (131) corresponding to the small holes one by one are provided on the bottom plate (13); the lower end of the button (21) is inserted into the corresponding first installation hole (111) and large hole (163); one end of the limit block (22) protruding from the button (21) is inserted into the side wall of the corresponding large hole (163), and the other end protruding from the button (21) is detachably connected to the front side plate (12); the PCB board (23) is located in the corresponding large hole (163). N compression springs (15) are installed in N middle holes (162), their bottom ends abut against the corresponding first step surfaces (164), and their top ends abut against the bottom surface of the corresponding button (21); two identification wires (4) are inserted into the corresponding compression springs (15) and sequentially pass through the corresponding small holes (161) and third installation holes (131).

4. The wire pressing device capable of identifying the crimping state according to claim 3, wherein: The limit block (22) is made of resin; A metal nut (221) is embedded in the middle of the limit block (22); N fourth installation holes (122) corresponding to the limit blocks (22) one by one are provided on the front side plate (12); a metal screw (222) is provided in each fourth installation hole (122); the head of the metal screw (222) is embedded in the front side plate (12), and its tail passes through the front side plate (12) and the limit block (22) and is threadedly connected to the metal nut (221) to realize the detachable connection between the limit block (22) and the front side plate (12).

5. The wire pressing device capable of identifying the crimping state according to claim 4, wherein: A prism (213) is provided below each convex rib (212); The two prisms (213) are parallel to each other and are inserted into the compression spring (15).

6. The wire pressing device capable of identifying the crimping state according to claim 5, wherein: A limit groove (166) corresponding to the second installation hole (121) is provided on the side wall of each large hole (163) for limiting the insertion length of the wire to be measured (3).

7. The wire pressing device capable of identifying the crimping state according to claim 6, wherein: A connection reinforcement plate (214) is provided between the opposite surfaces of the two prisms (213).

8. The wire pressing device capable of identifying the crimping state according to claim 7, characterized in that: The bottom surface of the limit block (22) is serrated; The top surface of the button (21) is provided with a downwardly concave arc groove, and arc chamfers are provided at its edges; The rear side plate (14) is detachably connected to the bottom plate (13) and the top plate (11) respectively.

9. A test system capable of identifying the crimping state, characterized in that: It includes the wire pressing device capable of identifying the crimping state according to any one of claims 1-8; It further includes N test devices; The N test devices correspond to N wire pressing terminals (2) one by one; Two identification wires (4) connected to the same PCB board (23) are connected to the same test device.

10. The test system capable of identifying the crimping state according to claim 9, characterized in that: The test device is a multimeter.

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