CN210110713U - Photovoltaic module's test fixture - Google Patents

Abstract

The utility model discloses a photovoltaic module's test fixture, test fixture is suitable for the cooperation on photovoltaic module's terminal box, test fixture includes insulating main part, the fixture block, electrically conductive piece and connecting piece, be equipped with the holding tank in the insulating main part, the holding tank is configured to hold the terminal box, be equipped with the cooperation groove on the first lateral wall of holding tank, the fixture block is established in the cooperation groove, the fixture block can move towards the second lateral wall that is close to or keeps away from the holding tank, second lateral wall and first lateral wall set up relatively, electrically conductive piece is two, two electrically conductive piece intervals set up, two electrically conductive pieces all link to each other with insulating main part, the connecting piece is two, the one end of every connecting piece switches on with electrically conductive piece and. The test tool is simple in structure and convenient to install, and can adapt to photovoltaic modules of various specifications.

Description

Photovoltaic module's test fixture

Technical Field

The utility model relates to a photovoltaic test equipment field especially relates to a photovoltaic module's test fixture.

Background

The photovoltaic module is generally manufactured by connecting a certain number of photovoltaic cells in series through solder strips or other methods, and then performing processes such as typesetting, stacking, laminating, final assembly and the like. After the device is fabricated, the device is tested for its voltammetric characteristics, withstand voltage, electroluminescence, insulation resistance, etc. for the purpose of sorting, performance requirement confirmation, etc. In order to improve efficiency, test items in which the detection ratio is 100% are generally performed one by one on an industrial production line. When the assembly is tested, the positive and negative connectors of the assembly are connected with the testing equipment. In order to achieve the purposes of improving the testing efficiency, saving labor and reducing the abrasion of the connector of the component when the component is tested on the industrial production line, a testing tool is usually used for realizing the conduction connection between the anode and the cathode of the component and testing equipment respectively. The test fixture generally comprises 1 pair of connecting wires, 2 metal blocks and a fixing mechanism, wherein one end of each 1 connecting wire is respectively connected with 1 metal block, the other end of each connecting wire can be respectively connected with a positive connector and a negative connector of the assembly, and the 2 metal blocks are separated by a certain distance and are mutually insulated. During testing, the testing tool is fixed on the photovoltaic module, the connecting wire is respectively connected with the positive connector and the negative connector of the module, and the metal probe of the testing equipment is in butt joint with the metal block until the testing is completed.

Most of the current test tools need to be fixed on the frame of the component when in use. Along with the development of photovoltaic trade, subassembly frame structure is constantly optimized, has appeared the photovoltaic module frame of more and more models to no frame dual glass assembly has still appeared, traditional test fixture can not be general because the difference of subassembly frame model or subassembly do not have the frame, needs the subassembly to make the demand that end purchase extra test fixture satisfied the subassembly test, has increased the unnecessary cost. In addition, the volume and the weight of the test tools are large, so that the defects of high operation strength and high manufacturing cost are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic module's test fixture, this test fixture's simple structure, simple to operate to can adapt to the photovoltaic module of multiple specification.

For realizing the technical purpose, the utility model discloses a photovoltaic module's test fixture's structure as follows:

the utility model provides a photovoltaic module's test fixture, test fixture is suitable for the cooperation on photovoltaic module's terminal box, test fixture includes: an insulating main body, wherein an accommodating groove is arranged on the insulating main body, the accommodating groove is configured to accommodate the junction box, and a matching groove is arranged on a first side wall of the accommodating groove; the fixture block is arranged in the matching groove, the fixture block can move towards a second side wall close to or far away from the accommodating groove, and the second side wall is opposite to the first side wall; two conductive pieces are arranged at intervals and are connected with the insulation main body; and two connecting pieces are arranged, one end of each connecting piece is connected with one conducting piece in a conduction mode, and the other end of each connecting piece is connected with the outgoing line of the junction box in a conduction mode.

In some specific embodiments, the test tool for a photovoltaic module further includes; the trigger piece, be equipped with the sliding tray on the insulating main part, trigger piece establishes along upper and lower direction slidable the sliding tray is interior, be equipped with on the trigger piece and trigger protrudingly, when the trigger piece receives to trigger, it can drive to trigger protrudingly the fixture block withdrawal the cooperation groove.

In some specific embodiments, the test fixture for a photovoltaic module further includes: one end of the first elastic piece is connected to the inner side face of the matching groove, and the other end of the first elastic piece is connected to the clamping block.

In some specific embodiments, the test fixture for a photovoltaic module further includes: and one end of the second elastic piece is connected to the bottom wall of the sliding groove, and the other end of the second elastic piece is connected to the trigger piece.

In some embodiments, the test fixture for the photovoltaic module further includes an adjusting block, and the adjusting block is disposed on the second side wall of the accommodating groove.

In some specific embodiments, the adjusting block is a U-shaped block, and an open end of the U-shaped block faces the fixture block.

In some embodiments, the adjusting block is a nylon block, and the contact surface of the adjusting block and the junction box is a sawtooth surface.

In some embodiments, the fixture block is a nylon block, and the contact surface of the fixture block and the junction box is a sawtooth surface.

In some embodiments, the connector is a connecting wire.

In some embodiments, the insulating body is provided with two wire slots, two connecting wires are fitted in the two wire slots, each wire slot has two openings, and the two openings are respectively located on different outer side walls of the insulating body.

The utility model discloses a test fixture, because test fixture is last be equipped with terminal box complex holding tank and mobilizable fixture block, consequently the terminal box can press from both sides and establish between the second lateral wall of fixture block and holding tank for test fixture can adapt to the photovoltaic module of a plurality of specifications, has enlarged test fixture's structure. In addition, the testing tool is matched with the junction box instead of the frame of the photovoltaic assembly, so that the structure of the testing tool is simplified, the operation of a user is facilitated, and the testing tool is prevented from damaging the glass plate of the photovoltaic assembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a test fixture provided in the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another direction of the test fixture according to an embodiment of the present invention.

Fig. 3 is a schematic view of the testing tool provided by the embodiment of the present invention cooperating with the terminal box.

Reference numerals:

1. an insulating body; 11. accommodating grooves; 111. a first side wall; 112. a second side wall; 12. a sliding groove; 13. a wire slot; 131. an opening; 14. a mating groove; 2. a clamping block; 3. a conductive member; 4. a connecting member; 5. a trigger; 51. a trigger protrusion; 6. a first elastic member; 7. a second elastic member; 8. an adjusting block; 9. retaining member, 100, terminal box.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The structure of the test tool for the photovoltaic module according to the embodiment of the present invention is described below with reference to fig. 1 to 3.

As shown in fig. 1-3, a test fixture for a photovoltaic module is adapted to be fitted on a junction box 100 of the photovoltaic module, the test fixture includes an insulating main body 1, a fixture block 2, conductive pieces 3 and connecting pieces 4, the insulating main body 1 is provided with an accommodating groove 11, the accommodating groove 11 is configured to accommodate the junction box 100, a first side wall 111 of the accommodating groove 11 is provided with a fitting groove 14, the fixture block 2 can move toward a second side wall 112 close to or away from the accommodating groove 11, the second side wall 112 is opposite to the first side wall 111, the conductive pieces 3 are two, the two conductive pieces 3 are arranged at intervals, the two conductive pieces 3 are both connected with the insulating main body 1, the connecting pieces 4 are two, one end of each connecting piece 4 is connected with one conductive piece 3, and the other end.

It can be understood that, in practical use, the test fixture is mounted on the junction box 100 of the photovoltaic module, one side wall of the junction box 100 is attached to the second of the receiving grooves 11, and the other side wall of the junction box 100 is attached to the fixture block 2, so that the test fixture can be stably connected to the junction box 100. And because fixture block 2 can move towards the second lateral wall 112 of keeping away from or being close to holding tank 11, consequently, test fixture can cooperate on the terminal box 100 of equidimension not, thereby make the utility model discloses a test fixture can be applicable to on the photovoltaic module of different specifications.

Meanwhile, because the utility model discloses a test fixture installs on photovoltaic module's terminal box 100, rather than installing on photovoltaic module's frame, has simplified test fixture's structure, has made things convenient for test fixture's installation and dismantlement. Furthermore, the utility model discloses a test fixture can also avoid test fixture to damage the phenomenon of photovoltaic module's glass board in the testing process.

It should be noted that after the test tool is installed, the outgoing line of the junction box 100 is connected to the connecting part 4, and the two probes of the test equipment are respectively in contact with the conductive parts 3, so that the test equipment and the photovoltaic module can be connected to complete the test.

The utility model discloses a test fixture, owing to be equipped with on the test fixture with terminal box 100 complex holding tank 11 and mobilizable fixture block 2, consequently terminal box 100 can press from both sides and establish between fixture block 2 and holding tank 11's second lateral wall 112 for test fixture can adapt to the photovoltaic module of a plurality of specifications, has enlarged test fixture's structure. In addition, because the test tool is matched with the junction box 100 instead of the frame of the photovoltaic assembly, the structure of the test tool is simplified, the operation of a user is facilitated, and the test tool is prevented from damaging the glass plate of the photovoltaic assembly.

In some embodiments, as shown in fig. 3, the conductive member 3 is formed as a conductive plate, and the insulating main body 1 is provided with a mounting groove for fitting with the conductive plate, and the mounting groove are located on two opposite side walls of the insulating main body 1. It can be understood that the conductive element 3 is formed as a conductive plate, which increases the area of the conductive element 3, and facilitates the contact between the conductive element 3 and the probe of the testing device and the contact between the conductive element 3 and the connecting element 4, thereby ensuring the stability of the path among the probe, the conductive element 3, the connecting element 4 and the outgoing line in the testing process.

Advantageously, the conductive member 3 is a brass plate.

In some embodiments, as shown in fig. 3, the test fixture for a photovoltaic module further includes a trigger 5, the insulation main body 1 is provided with a sliding groove 12, the trigger 5 is slidably disposed in the sliding groove 12 along an up-down direction, the trigger 5 is provided with a trigger protrusion 51, and when the trigger 5 is triggered, the trigger protrusion 51 can drive the fixture block 2 to retract into the mating groove 14. It can be understood that, in the actual use process, the user only needs to press the trigger 5 to drive the latch 2 to retract into the engaging groove 14, so as to realize the function of adjusting the distance between the latch 2 and the other side wall of the receiving groove 11, which is convenient for the user to adjust.

In some specific embodiments, as shown in fig. 1 to 3, the test fixture for a photovoltaic module further includes a first elastic member 6, one end of the first elastic member 6 is connected to the inner side surface of the fitting groove 14, and the other end is connected to the fixture block 2. It can be understood that, while the user presses the triggering member 5 to retract the latch 2 into the engaging slot 14, the first elastic member 6 deforms and stores energy, and when the trigger on the triggering member 5 is removed, the first elastic member 6 can drive the latch 2 to eject. Therefore, in practical use, the trigger piece 5 is pressed down to fit the accommodating groove 11 of the test tool on the junction box 100 of the photovoltaic module, one side wall of the junction box 100 is fitted with one side wall of the accommodating groove 11, then the trigger piece 5 is released, and the fixture block 2 can move towards the direction close to the junction box 100 under the action of the first elastic piece 6 and is stopped against the other side wall of the junction box 100. In the whole installation process, the testing tool can be stably connected to the junction box 100 only by operating the trigger block, so that the testing tool is greatly convenient for a user to install and dismantle.

In some specific embodiments, as shown in fig. 1 to 3, the photovoltaic module testing tool further includes a second elastic member 7, one end of the second elastic member 7 is connected to the bottom wall of the sliding groove 12, and the other end is connected to the triggering member 5. It can be understood that, if the second elastic member 7 is not provided, the fixture block 2 also drives the triggering member 5 to reset when the fixture block 2 is driven by the first elastic member 6, so that if the triggering member 5 is locked, the fixture block 2 cannot be abutted to the side wall of the terminal box 100, thereby reducing the connection stability of the test fixture and the terminal box 100. And in the embodiment of the utility model, owing to be provided with second elastic component 7, press trigger 5 so that when making fixture block 2 withdrawal cooperation groove 14 when the user, second elastic component 7 takes place deformation and energy storage energy, trigger 5 is not pressing trigger when the user, trigger 5 restores to the original position under the effect of second elastic component 7, thereby make fixture block 2 can move towards the orientation of being close to another lateral wall of holding tank 11 under the effect of first elastic component 6, avoided leading to the dead phenomenon of fixture block 2 card because trigger 5 card is dead, the stability of being connected of test fixture and terminal box 100 has been guaranteed.

Of course, it should be noted here that, in other embodiments of the present invention, the photovoltaic module may not include the triggering member 5, the side wall of the matching groove 14 is provided with a plurality of adjusting holes, and the fixture block 2 is connected in one of the adjusting holes through the connecting member 4 such as a screw or a rivet. Like this can realize the function of adjusting the distance between another lateral wall of fixture block 2 and holding tank 11 equally, thereby realize the utility model discloses the test fixture can adapt to the purpose of the terminal box 100 of multiple specification.

In some embodiments, as shown in fig. 1 to 3, the test tool for a photovoltaic module further includes an adjustment block 8, and the adjustment block 8 is disposed on the second sidewall 112. It is understood that when the size of the terminal block 100 is small, the terminal block 100 may not be well clamped only by the fixture 2. And in the utility model discloses an among the test fixture, the fixture block 2 that adds can be when terminal box 100 volume is less, adjusts the position of adjusting block 8 for two relative lateral walls of terminal box 100 end respectively to support on adjusting block 8 and fixture block 2. Therefore, when the size of the terminal box 100 is small, the test tool can still be stably connected to the terminal box 100.

It should be noted that in some embodiments, the side walls of the receiving groove 11 have a plurality of adjustment holes, and the adjustment block 8 is connected to the insulating main body 1 by a connecting member such as a screw or a rivet. Thereby, the position adjustment of the adjusting block 8 is realized. In some embodiments, an elongated adjustment groove is formed on a sidewall of the receiving groove 11, and the adjustment block 8 is connected to the insulating main body by a screw or a rivet, so that the adjustment of the adjustment block 8 can be realized due to the elongated adjustment groove.

Of course, in other embodiments of the present invention, the photovoltaic module does not include the adjusting block 8, but includes two fixture blocks 2, and the two fixture blocks 2 are respectively disposed on the first side wall 111 and the second side wall 112 of the accommodating groove 11.

In some embodiments, as shown in fig. 1-2, the adjusting block 8 is a U-shaped block, and the open end of the U-shaped block is disposed toward the latch 2. It can be understood that the U-shaped block can better achieve the function of clamping the junction box 100, thereby ensuring the connection stability of the test tool and the junction box 100. Of course, in other embodiments of the present invention, the adjusting block 8 may also be shaped into other shapes, and is not limited to the U-shaped block of this embodiment.

In some embodiments, as shown in FIG. 3, the adjusting block 8 is a nylon block, and the contact surface of the adjusting block 8 and the junction box 100 is a serrated surface. It can be understood that the adjusting block 8 is made of nylon material, so that the adjusting block 8 is light and firm, the abrasion of the adjusting block 8 is reduced, the service life of the test tool is prolonged, the contact surface of the adjusting block 8 and the junction box 100 is a sawtooth surface, the friction force between the adjusting block 8 and the junction box 100 is increased, and the test tool can be connected to the junction box 100 more stably. Of course, in other embodiments of the present invention, the adjusting block 8 may be made of other materials, and is not limited to the nylon of the embodiment.

In some embodiments, as shown in fig. 3, the latch 2 is a nylon latch, and the contact surface of the latch 2 and the terminal box 100 is a serrated surface. It can be understood that the fixture block 2 is made of nylon material, so that the fixture block 2 is light and firm, abrasion of the fixture block 2 is reduced, the service life of the test tool is prolonged, the contact surface of the fixture block 2 and the junction box 100 is a sawtooth surface, friction between the fixture block 2 and the junction box 100 is increased, and the test tool can be connected to the junction box 100 more stably. Of course, in other embodiments of the present invention, the fixture block 2 may be made of other materials, and is not limited to the nylon of the embodiment.

In some embodiments, the connector 4 is a connecting wire. It can be understood that, the connecting line is adopted as the connecting piece 4, the length of the connecting line can be adjusted according to actual needs, and therefore the photovoltaic module can be better adapted to various specifications. In addition, the connection wires can facilitate the connection with the conducting elements 3 and the outgoing wires of the junction box 100. In particular, the conductive members 3 may be connected by a soldered connection line, and the outgoing line may be connected to the connection line by a connection terminal.

In some embodiments, as shown in fig. 1-2, the insulating body 1 is provided with two wire slots 13, two connecting wires are fitted in the two wire slots 13, each wire slot 13 has two openings 131, and the two openings 131 are respectively located on different outer side walls of the insulating body 1. It can be understood that the connecting wire is connected in the wire groove 13 to ensure the stability of the connecting wire, and the wire groove 13 can protect the connecting wire, thereby avoiding the phenomenon that the connecting wire is scratched or is easily separated from the conducting piece 3 and the outgoing line of the junction box 100 by external force. In addition, each wire slot 13 is provided with two openings 131, and the two openings 131 are respectively positioned on different outer side walls of the insulating main body 1, so that after the connecting wire extends out of one opening 131, the retaining member 9 can be inserted into the other opening 131 to lock the connecting wire, thereby better meeting the use requirement. Of course, in other embodiments of the present invention, the connecting member 4 may not be formed as a connecting wire, but as a conductive sheet embedded inside the insulating main body 1.

Example (b):

the following describes a test fixture for a photovoltaic module according to an embodiment of the present invention with reference to fig. 1 to 3.

As shown in fig. 1 to 3, the testing tool of the present embodiment includes an insulating main body 1, a clamping block 2, a conductive member 3, a connecting member 4, a triggering member 5, a first elastic member 6, a second elastic member 7, and an adjusting block 8. Be equipped with receiving groove 11, sliding tray 12 and two wire casing 13 on insulating main part 1, receiving groove 11 is configured to hold terminal box 100, is equipped with cooperation groove 14 on the first lateral wall 111 of receiving groove 11 and establishes at cooperation groove 14 fixture block 2, and fixture block 2 can move towards the second lateral wall 112 that is close to or keeps away from receiving groove 11, and second lateral wall 112 sets up with first lateral wall 111 relatively. The fixture block 2 is a nylon block, and the contact surface of the fixture block 2 and the junction box 100 is a sawtooth surface. The two conductive pieces 3 are arranged at intervals, the two conductive pieces 3 are connected with the insulation main body 1, the connecting pieces 4 are formed into connecting wires and are two, the two connecting wires are matched in the wire grooves 13, one end of each connecting wire is connected with the conductive pieces 3 through tin soldering, and the other end of each connecting wire is connected with the leading-out wire of the junction box 100 in a conduction mode. The trigger 5 is slidably disposed in the sliding groove 12 in the up-down direction, and the trigger 5 is provided with a trigger protrusion 51, and when the trigger 5 is triggered, the trigger protrusion 51 can drive the latch 2 to retract into the mating groove 14. One end of the first elastic member 6 is connected to the inner side surface of the fitting groove 14, and the other end is connected to the latch 2. One end of the second elastic member 7 is connected to the bottom wall of the sliding groove 12, and the other end is connected to the trigger member 5. The adjusting block 8 is arranged on the second side wall 112 of the accommodating groove 11 opposite to the side wall provided with the matching groove 14, the adjusting block 8 is a U-shaped nylon block, the opening 131 of the U-shaped block is arranged towards the fixture block 2, and the contact surface of the adjusting block 8 and the junction box 100 is a sawtooth surface.

The photovoltaic module testing tool of the embodiment skillfully realizes the universality on photovoltaic modules of different models through unique design, so that the same testing tool can be applied to components of most different models, the purchasing and management cost is not increased, the idle condition of the testing tool is avoided, and the purposes of cost reduction and efficiency improvement are achieved. In addition, the size and the weight of the test tool are greatly reduced compared with the traditional test tool, and the operation strength and the manufacturing cost are greatly reduced.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. The utility model provides a photovoltaic module's test fixture, characterized in that, the test fixture is suitable for the cooperation on photovoltaic module's terminal box (100), the test fixture includes:

the terminal box structure comprises an insulating main body (1), wherein an accommodating groove (11) is formed in the insulating main body (1), the accommodating groove (11) is configured to accommodate the terminal box (100), and a matching groove (14) is formed in a first side wall (111) of the accommodating groove (11);

the fixture block (2) is arranged in the matching groove (14), the fixture block (2) can move towards a second side wall (112) close to or far away from the accommodating groove (11), and the second side wall (112) is opposite to the first side wall (111);

the number of the conductive pieces (3) is two, the two conductive pieces (3) are arranged at intervals, and the two conductive pieces (3) are connected with the insulation main body (1);

and two connecting pieces (4) are provided, one end of each connecting piece (4) is connected with one conducting piece (3) in a conducting manner, and the other end of each connecting piece is connected with a leading-out wire of the junction box (100) in a conducting manner.

2. The photovoltaic module's test fixture of claim 1, further comprising: trigger block (5), be equipped with sliding tray (12) on insulating main part (1), trigger block (5) are established along upper and lower direction slidable in sliding tray (12), be equipped with on trigger block (5) and trigger protruding (51), when trigger block (5) receive triggering, trigger protruding (51) and can drive fixture block (2) withdrawal cooperation groove (14).

3. The photovoltaic module's test fixture of claim 2, further comprising: one end of the first elastic piece (6) is connected to the inner side face of the matching groove (14), and the other end of the first elastic piece (6) is connected to the fixture block (2).

4. The photovoltaic module's test fixture of claim 2, further comprising: one end of the second elastic piece (7) is connected to the bottom wall of the sliding groove (12), and the other end of the second elastic piece (7) is connected to the trigger block (5).

5. The photovoltaic module testing tool according to claim 1, further comprising an adjusting block (8), wherein the adjusting block (8) is arranged on the second side wall (112) of the accommodating groove (11).

6. The photovoltaic module testing tool according to claim 5, wherein the adjusting block (8) is a U-shaped block, and an open end of the U-shaped block is arranged towards the clamping block (2).

7. The photovoltaic module testing tool according to claim 5, wherein the adjusting block (8) is a nylon block, and a contact surface of the adjusting block (8) and the junction box (100) is a sawtooth surface.

8. The photovoltaic module testing tool according to claim 1, wherein the fixture block (2) is a nylon block, and a contact surface of the fixture block (2) and the junction box (100) is a sawtooth surface.

9. The photovoltaic module testing tool according to any one of claims 1-8, wherein the connecting piece (4) is a connecting line.

10. The photovoltaic module testing tool according to claim 9, wherein the insulating main body (1) is provided with two wire slots (13), two connecting wires are fitted in the two wire slots (13), each wire slot (13) is provided with two openings (131), and the two openings (131) are respectively located on different outer side walls of the insulating main body (1).

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