Device and method for measuring angle of connecting piece of electric connector

Abstract

The invention belongs to the technical field of cable fitting processing, and particularly relates to an electric connector connecting piece angle measuring device and method. The device comprises a dial plate mechanism and a connecting piece fixing mechanism, the dial plate mechanism is connected with the connecting piece fixing mechanism; the dial mechanism comprises pointers and a dial; the middle of the pointer is connected with the center of the dial, and the pointer rotates on the dial; the pointer is connected with the connecting piece fixing mechanism; a fixing assembly for fixing the electric connector and a positioning assembly for positioning the central axis of the electric connector are arranged on the dial plate, and dial plate scale values are further arranged on the surface, close to the pointer, of the dial plate in the circumferential direction of the dial plate; the fixing assembly comprises a plurality of fixing claws, and the plurality of fixing claws are uniformly arranged along the circumferential direction of the dial plate; the positioning assembly comprises a positioning piece, and the positioning piece is arranged on the dial plate; according to the invention, the deviation angle between the electric connector and the connecting piece can be observed, the central axis of the connecting piece and the central axis of the end surface of the electric connector are accurately adjusted to be in the same horizontal plane, and the cable processing and assembling efficiency is improved.

Description

Technical Field

[0001] This application belongs to the technical field of cable accessory processing, and specifically relates to an angle measuring device and method for electrical connector connectors. Background Art

[0002] As the transmission nerve of aircraft signals, cables play an irreplaceable role in the normal operation of aircraft. Some cable plug connectors are bent connectors; when the bent connectors are docked with aircraft finished products, due to the limitation of the main key slot position, there is a certain angle between the connector and the main key slot. An inappropriate connector angle may cause interference between plugs or between a plug and other parts. Therefore, it is necessary to ensure the quality of the butt joint installation of the bent connector plug and the accuracy of the connector angle; currently, when installing cables, the angle of the bent connector basically depends on manual visual inspection, and there are large errors in visual inspection, often resulting in rework of the cable in subsequent installation docking. Therefore, the existing measurement methods for electrical connectors have large errors and need to be improved urgently.

[0003] For example, a Chinese patent with the publication number CN113739749A and the publication date of December 03, 2021, and the invention patent with the title "An Angle Measuring Device for an Electrical Connector and a Bent Rear Accessory" has the following technical solution: This invention relates to the technical field of aviation circuit installation, and particularly relates to an angle measuring device for an electrical connector and a bent rear accessory. An installation part formed by connecting an aviation electrical connector and a bent rear accessory is arranged between a base and the main body of the angle measuring device. A positioning reference is also provided on the base, and the projection of the positioning reference on the main body of the angle measuring device coincides with the angle scale line of the main body of the angle measuring device, making the rear accessory clamp tail of the bent rear accessory perpendicular to the positioning reference. Since the axis of the bent rear accessory is perpendicular to the rear accessory clamp tail, the axis of the bent rear accessory coincides with the angle scale line on the protractor scale disk, so that the main body of the angle measuring device can directly measure the angle between the bent rear accessory and the main key slot on the electrical connector.

[0004] Although the above patent solves the disadvantages of low measurement efficiency and high error rate when manually using an ordinary protractor, the installation method of the device in the above patent is complex, and it is necessary to align the first concentric circle marking line and the second concentric circle marking line during measurement, so there are still the disadvantages of high measurement error rate and complex device usage method. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides an angle measuring device and method for electrical connector connectors with simple installation and operation methods and high measurement accuracy.

[0006] To achieve the above technical effects, the technical solution of this application is as follows: In a first aspect, an angle measuring device for an electrical connector connecting member includes a dial mechanism and a connecting member fixing mechanism; the dial mechanism and the connecting member fixing mechanism are connected; the dial mechanism includes a pointer and a dial; the middle of the pointer is connected to the center of the dial, and the pointer rotates on the dial; the pointer is connected to the connecting member fixing mechanism; on the side of the dial away from the pointer, there is a fixing component for fixing the electrical connector and a positioning component for positioning the central axis of the end surface of the electrical connector, and along the circumferential direction of the dial on the side of the dial close to the pointer, there are also dial scale values; the fixing component includes a plurality of fixing claws, and the plurality of fixing claws are evenly arranged along the circumferential direction of the dial; the positioning component includes a positioning member, and the positioning member is arranged on the dial.

[0007] Further, the fixing component further includes a limiting rod; the limiting rod is arranged on the dial along the radial direction of the dial; the fixing claw is sleeved on the limiting rod, and the fixing claw slides on the limiting rod; one end of the limiting rod is connected to a limiting block, and the other end of the limiting rod is connected to the dial; between the limiting block and the fixing claw, there is a first elastic member connected; the first elastic member is sleeved on the limiting rod; the limiting block is fixedly arranged on the dial.

[0008] Furthermore, on the circumferential direction of the dial, there are radially arranged strip-shaped grooves.

[0009] Furthermore, in each strip-shaped groove, there is a limiting rod arranged, and in each strip-shaped groove, there is a limiting block arranged; the limiting block is arranged at the end of the strip-shaped groove away from the center of the dial.

[0010] Furthermore, there are three strip-shaped grooves, and the angles between the three strip-shaped grooves are equal; there are three limiting rods.

[0011] Further, the positioning component further includes a support rod; the support rod is arranged on the dial along the radial direction of the dial, and the position where the support rod is located corresponds to the zero scale value of the dial scale value; the positioning member is sleeved on the support rod, the positioning member is sleeved on the support rod, and the positioning member is connected to a slot opened on the electrical connector; the slot is opened along the central axis direction of the end surface of the electrical connector; the positioning member slides on the support rod; at the end of the support rod close to the center of the dial, there is a second elastic member sleeved; one end of the second elastic member is connected to the positioning member, and the other end of the second elastic member is connected to the dial.

[0012] Furthermore, there is a hollow hole opened on the dial; on the hollow hole, there is a support rod arranged.

[0013] Further, the connecting member fixing mechanism includes a connecting shaft and an abutting component; the connecting shaft is connected to the abutting component, and the connecting shaft is connected to the bottom of the pointer; the abutting component abuts against the surface of the connecting member.

[0014] Further, the abutting component includes a fixed shaft and an abutting head; the fixed shaft is connected to the abutting head, and the fixed shaft is connected to the connecting shaft; the abutting head abuts against the connecting member.

[0015] Further, a pin is provided in the middle of the pointer, and the pin is connected to the bearing on the dial; the bearing is provided at the center of the dial.

[0016] Further still, both the first elastic member and the second elastic member are springs.

[0017] In a second aspect, a method for measuring the angle of an electrical connector connecting member includes the following specific method steps: S1: Connect the positioning member of the positioning component in the dial mechanism to the slot of the electrical connector, and use a plurality of fixing claws of the fixing component in the dial mechanism to fix the electrical connector; S2: Make the connecting member fixing mechanism abut against the connecting member; S3: Read the dial scale value pointed to by the pointer, judge the angle between the connecting member and the electrical connector according to the read dial scale value, and then adjust the connection between the connecting member and the electrical connector.

[0018] Further, the dial mechanism is connected to the connecting member fixing mechanism; the dial mechanism includes a pointer and a dial; the middle part of the pointer is connected to the center of the dial, and the dial rotates on the middle part of the pointer; the pointer is connected to the connecting member fixing mechanism for fixing the connecting member.

[0019] Further still, a fixing component for fixing the electrical connector and a positioning component for positioning the central axis of the end surface of the electrical connector are provided on the surface of the dial away from the pointer, and dial scale values are further provided along the circumferential direction of the dial on the surface of the dial close to the pointer.

[0020] Further still, the fixing component includes a plurality of fixing claws, and the plurality of fixing claws are evenly arranged along the circumferential direction of the dial; the positioning component includes a positioning member, and the positioning member is connected to the slot opened on the electrical connector.

[0021] According to the above technical solution, the beneficial effects of the present invention are as follows: 1. The device of the present invention adopts a dial mechanism and a connection fixing structure, and can observe the deviation angle between the central axis of the end surface of the electrical connector and the central axis of the connecting member from the dial mechanism, so that the central axis of the connecting member and the central axis of the end surface of the electrical connector can be accurately adjusted to be in the same horizontal plane according to the angle between the pointer and the dial, so that the installation angle has no deviation, and the efficiency of later cable processing and assembly is improved.

[0022] 2. In the device of the present invention, the fixing component adopts a limiting rod, a fixing claw, a first elastic member, and a limiting block, which can adjust the position of the fixing claw on the limiting rod according to the size of the end of the electrical connector, and provide a clamping force for the fixing claw through the first elastic member, realizing the quick fixing of the electrical connector. Moreover, the fixing method using the fixing component is simple and convenient to operate.

[0023] 3. In the device of the present invention, the positioning component adopts a support rod, a positioning member, and a second elastic member, realizing the quick positioning of the central axis of the electrical connector by the positioning component, which is quicker, more convenient, and more accurate than the method of aligning concentric circle marking lines in the prior art.

[0024] 4. In the device of the present invention, the connecting member fixing mechanism adopts a connecting shaft, a fixing shaft, and a butting head. The butting head abuts against the connecting member, and since the connecting shaft is connected to the pointer of the dial mechanism, if there is a deviation angle between the connecting member and the central axis of the electrical connector, the connecting shaft will also drive the pointer to deflect, achieving the technical effect of quickly and accurately measuring the deviation angle between the connecting member and the central axis of the electrical connector.

[0025] 5. The method of the present invention can quickly obtain the deviation angle of the central axes of the electrical connector and the connecting member by reading the dial scale value on the pointer, thereby facilitating the subsequent quick adjustment of the connection between the connecting member and the electrical connector. Brief Description of the Drawings

[0026] Figure 1 It is a schematic assembly structure diagram of the device of the present invention, the electrical connector, and the connecting member.

[0027] Figure 2 It is a schematic three-dimensional structure diagram of the device of the present invention.

[0028] Figure 3 It is a schematic assembly structure diagram of the electrical connector and the connecting member.

[0029] In the drawings: 1 - dial, 11 - hollow hole, 2 - pointer, 21 - pin, 3 - fixing component, 31 - fixing claw, 32 - limiting block, 33 - limiting rod, 34 - first elastic member, 4 - positioning component, 41 - support rod, 42 - positioning member, 43 - second elastic member, 5 - connecting member fixing mechanism, 51 - connecting shaft, 52 - fixing shaft, 53 - butting head, 6 - electrical connector, 61 - slot, 7 - connecting member. Detailed Description of the Embodiment

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0031] Embodiment 1 As Figure 1 and Figure 2 shown, an angle measuring device for an electrical connector connecting member includes a dial mechanism and a connecting member fixing mechanism 5; the dial mechanism is connected to the connecting member fixing mechanism 5; the dial mechanism includes a pointer 2 and a dial 1; the middle part of the pointer 2 is connected to the center of the dial 1, and the pointer 2 rotates on the dial 1; the dial 1 can also rotate around the middle part of the pointer 2; the pointer 2 is connected to the connecting member fixing mechanism 5; on the side of the dial 1 away from the pointer 2, there are provided a fixing component 3 for fixing the electrical connector 6 and a positioning component 4 for positioning the central axis of the end surface of the electrical connector 6, and along the circumferential direction of the dial 1 on the side of the dial 1 close to the pointer 2, there are also provided dial scale values; when the pointer 2 rotates, it will point to the corresponding dial scale value, and the angle deviation between the connecting member 7 and the central axis of the electrical connector 6 is judged according to the pointed dial scale value; the accuracy of the dial scale value can be made with corresponding scale values when manufacturing the dial 1 according to needs; the fixing component 3 includes a plurality of fixing claws 31, and the plurality of fixing claws 31 are uniformly arranged along the circumferential direction of the dial 1; the positioning component 4 includes a positioning member 42, and the positioning member 42 is arranged on the dial 1.

[0032] Embodiment 2 Based on Embodiment 1, as Figure 2As shown, the fixing assembly 3 also includes a limiting rod 33; the limiting rod 33 is arranged on the dial 1 along the radial direction of the dial 1; the specific setting length of the limiting rod 33 is from the center of the dial 1 to the outer circumference of the dial 1; the fixing claw 31 is sleeved on the limiting rod 33, and the fixing claw 31 slides on the limiting rod 33, and the sliding of the fixing claw 31 on the limiting rod 33 is convenient for adapting to the fixation of the ends of electrical connectors 6 of different sizes; the fixing claw 31 is L-shaped, and the claw portion of the fixing claw 31 extends perpendicular to the dial 1 along the axial direction of the dial 1, and the extended claw portion of the fixing claw 31 is convenient for fixing and clamping the electrical connector 6; one end of the limiting rod 33 is connected to the limiting block 32, and the other end of the limiting rod 33 is connected to the dial 1; the limiting block 32 limits the movement of the fixing claw 31 to prevent the fixing claw 31 from moving too far and falling off and being damaged from the dial 1; the limiting block 32 is fixedly arranged On the dial 1; the limit block 32 and the fixed claw 31 are connected by the first elastic member 34; the first elastic member 34 is sleeved on the limit rod 33; the function of the first elastic member 34 is to provide a clamping force for the fixed claw 31 when the fixed claw 31 clamps the electrical connector 6; when it is necessary to fix the clamped electrical connector 6, the fixed claw 31 on the dial 1 is pushed open, and the first elastic member 34 is in a compressed state at this time. When the electrical connector 6 begins to be clamped, the fixed claw 31 is released, and the first elastic member 34 begins to rebound due to the compression, and the fixed claw 31 clamps the electrical connector 6 at this time; because the first elastic member 34 is not in a completely rebound state when clamping the electrical connector 6, the spring is still in a compressed state, and the rebound force generated by it is converted into a continuous clamping force of the fixed claw 31, thereby preventing the end surface of the dial 1 and the electrical connector 6 from being displaced.

[0033] like Figure 2 As shown, radial strip grooves are opened in the circumferential direction of the dial; a limit rod 33 is arranged in each strip groove, and a limit block 32 is arranged inside each strip groove; the limit block 32 is arranged on the end of the strip groove away from the center direction of the dial 1; there are three strip grooves, and the angles between the three strip grooves are equal, and the angles are all 120 degrees; there are three limit rods 33, so there are also three fixing claws 31 on the dial 1; the main function of setting the strip grooves on the dial 1 is to facilitate the fixing claws 31 in the fixing component 3 to slide in the grooves, so as to achieve the effect of clamping and fixing the electrical connector 6.

[0034] like Figure 2As shown, the positioning component 4 further includes a support rod 41; the support rod 41 is arranged on the dial 1 in the radial direction of the dial 1, and the position where the support rod 41 is located corresponds to the zero scale value of the scale value of the dial 1; the positioning member 42 is sleeved on the support rod 41, and the positioning member 42 is connected to the slot 61 opened on the electrical connector 6; the slot 61 is opened in the direction of the central axis of the end surface of the electrical connector 6; when the positioning member 42 is connected to the slot 61, the positioning component 4 of the dial mechanism is also positioned on the central axis of the end surface of the electrical connector 6, and the position where the central axis is located also points to the 0 scale of the dial scale value on the dial 1; the positioning member 42 slides on the support rod 41; a second elastic member 43 is sleeved on one end of the support rod 41 close to the center of the dial 1; one end of the second elastic member 43 is connected to the positioning member 42, and the other end of the second elastic member 43 is connected to the dial 1; both the first elastic member 34 and the second elastic member 43 are springs; as Figure 2 and Figure 3 shown, the positioning member 42 is made of a metal material and has a structure that can be fixedly matched with the slot 61 on the electrical connector 6; the second elastic member 43 provides an elastic force for the positioning member 42 along the direction of the support rod 41, so that the positioning member 42 is more firmly fixed in the electrical connection slot 61; a hollow hole 11 is opened on the dial 1; the support rod 41 is arranged on the hollow hole 11; as Figure 2 shown, three hollow holes 11 are opened on the dial 1, and their function is to facilitate the installation of the positioning member 42 and reduce the weight of the dial 1.

[0035] Embodiment 3

[0036] Based on Embodiment 1, as Figure 2 shown, the connecting piece fixing mechanism 5 is arranged below the dial 1 mechanism, and the connecting piece fixing mechanism 5 includes a connecting shaft 51 and an abutting component; the connecting shaft 51 is connected to the abutting component, and the connecting shaft 51 is connected to the bottom of the pointer 2; the abutting component abuts against the surface of the connecting piece 7; the abutting component includes a fixed shaft 52 and an abutting head 53; the fixed shaft 52 is connected to the abutting head 53, and the fixed shaft 52 is connected to the connecting shaft 51; the abutting head 53 abuts against the connecting piece 7; an abutting surface is arranged at the end of the abutting head 53, and the surface of the abutting surface is attached to the surface of the connecting piece 7; the abutting surface is V-shaped and can cooperate with the curved surface structure on the surface of the connecting piece 7 to prevent rotation or sliding between the abutting head 53 and the connecting piece 7 during measurement; a pin 21 is arranged in the middle of the pointer 2, and the pin 21 is connected to the bearing on the dial 1. The purpose of arranging the pin 21 and the bearing is to enable both the pointer 2 and the dial 1 to rotate; the bearing is arranged at the center of the dial 1.

[0037] Embodiment 4 Based on Embodiments 2 and 3, as Figure 3 shown, when the connecting piece 7 is connected to the electrical connector 6, asFigure 1 As shown, at this time, the positioning component 4 on the dial mechanism is used to position the central axis of the electrical connector 6, and the electrical connector 6 is fixed by the fixing component 3 of the dial mechanism; the connecting piece fixing mechanism 5 is abutted against the connecting piece 7; start reading the dial scale value pointed to by the pointer 2 on the dial 1 mechanism by the pointer 2; if there is an included angle between the pointer 2 and the 0 scale on the dial 1, then there is an included angle between the central axis of the electrical connector 6 and the central axis of the connecting piece 7, and it is necessary to rotate and adjust the fixing ring on the electrical connector 6 so that the connecting piece 7 can continue to rotate, and adjust the connection between the connecting piece 7 and the electrical connector 6 according to the offset angle until it is adjusted until there is no included angle between the pointer 2 and the 0 scale on the dial 1. At this time, there is no included angle between the central axis of the electrical connector 6 and the central axis of the connecting piece 7, and the adjustment is completed.

[0038] Embodiment 5 As Figure 1 shown, a method for measuring the angle of an electrical connector connecting piece includes the following specific method steps: S1: Connect the positioning piece 42 of the positioning component 4 in the dial mechanism to the slot 61 of the electrical connector 6, and fix the electrical connector 6 with multiple fixing claws 31 of the fixing component 3 in the dial 1 mechanism; S2: Abut the connecting piece fixing mechanism 5 against the connecting piece 7; S3: Read the dial scale value pointed to by the pointer 2, judge the angle between the connecting piece 7 and the electrical connector 6 according to the read dial scale value, and then adjust the connection between the connecting piece 7 and the electrical connector 6.

[0039] Before performing step S1, first rotatably connect and fix the electrical connector 6 and the connecting piece 7 so that the central axis of the connecting piece 7 and the central axis of the end surface of the electrical connector 6 are visually in the same plane; so before S1, the connection between the connecting piece 7 and the electrical connector 6 is completed. At this time, directly use this device to measure the deviation angle between the central axis of the connecting piece 7 and the central axis of the end surface of the electrical connector 6; The dial mechanism is connected to the connecting piece fixing mechanism 5; the dial mechanism includes a pointer 2 and a dial 1; the middle of the pointer 2 is connected to the center of the dial 1, and the dial 1 rotates on the middle of the pointer 2; the pointer 2 is connected to the connecting piece fixing mechanism 5 for fixing the connecting piece 7.

[0040] The dial 1 is provided with a fixing component 3 for fixing the electrical connector 6 and a positioning component 4 for positioning the central axis of the end surface of the electrical connector 6, and a dial scale value is also provided on one side of the dial 1 close to the pointer 2 along the circumferential direction of the dial 1.

[0041] The fixing component 3 includes multiple fixing claws 31, and the multiple fixing claws 31 are evenly arranged along the circumferential direction of the dial 1; the positioning component 4 includes a positioning piece 42, and the positioning piece 42 is connected to the slot 61 opened on the electrical connector 6.

[0042] The above description is a detailed description of the preferred feasible embodiments of the present application. However, the embodiments are not intended to limit the scope of the patent application of the present application. Any changes or modifications made under the technical spirit disclosed in the present application shall fall within the scope of the patent covered by the present application.

Claims

1. An angle measuring device for an electrical connector connector, characterized in that: It includes a dial mechanism and a connector fixing mechanism (5); the dial mechanism and the connector fixing mechanism (5) are connected; the dial mechanism includes a pointer (2) and a dial (1); the middle of the pointer (2) is connected to the center of the dial (1), and the pointer (2) rotates on the dial (1); the pointer (2) is connected to the connector fixing mechanism (5); on the side of the dial (1) away from the pointer (2), there is a fixing component (3) for fixing the electrical connector (6) and a positioning component (4) for positioning the central axis of the end surface of the electrical connector (6), and on the side of the dial (1) close to the pointer (2), there are also dial scale values arranged along the circumference of the dial (1); the fixing component (3) includes a plurality of fixing claws (31), and the plurality of fixing claws (31) are evenly arranged along the circumferential direction of the dial (1); the positioning component (4) includes a positioning member (42), and the positioning member (42) is arranged on the dial (1).

2. The angle measuring device for an electrical connector connector according to claim 1, characterized in that: The fixing component (3) further includes a limiting rod (33); the limiting rod (33) is arranged on the dial (1) along the radial direction of the dial (1); the fixing claw (31) is sleeved on the limiting rod (33), and the fixing claw (31) slides on the limiting rod (33); one end of the limiting rod (33) is connected to a limiting block (32), and the other end of the limiting rod (33) is connected to the dial (1); between the limiting block (32) and the fixing claw (31), there is a connection through a first elastic member (34); the first elastic member (34) is sleeved on the limiting rod (33); the limiting block (32) is fixedly arranged on the dial (1).

3. The angle measuring device for an electrical connector connector according to claim 2, characterized in that: On the circumferential direction of the dial (1), there are radially arranged strip-shaped grooves.

4. The angle measuring device for an electrical connector connector according to claim 3, characterized in that: In each strip-shaped groove, there is a limiting rod (33) arranged, and in each strip-shaped groove, there is a limiting block (32); the limiting block (32) is arranged at the end of the strip-shaped groove away from the center of the dial (1).

5. The angle measuring device for an electrical connector connector according to claim 4, characterized in that: There are three strip-shaped grooves, and the angles between the three strip-shaped grooves are equal; there are three limiting rods (33).

6. The angle measuring device for an electrical connector connector according to claim 2, characterized in that: The positioning component (4) further includes a support rod (41); the support rod (41) is arranged on the dial (1) along the radial direction of the dial (1), and the position where the support rod (41) is located corresponds to the zero scale value of the dial scale value; the positioning member (42) is sleeved on the support rod (41), and the positioning member (42) is connected to a slot (61) opened on the electrical connector (6); the slot (61) is opened along the central axis direction of the end surface of the electrical connector (6); the positioning member (42) slides on the support rod (41); at one end of the support rod (41) close to the center of the dial (1), there is a second elastic member (43) sleeved; one end of the second elastic member (43) is connected to the positioning member (42), and the other end of the second elastic member (43) is connected to the dial (1).

7. The angle measuring device for an electrical connector connector according to claim 6, characterized in that: On the dial (1), there is a hollow hole (11); on the hollow hole (11), there is a support rod (41).

8. The angle measuring device for an electrical connector connector according to claim 1, characterized in that: The connecting member fixing mechanism (5) includes a connecting shaft (51) and an abutting component; the connecting shaft (51) is connected to the abutting component, and the connecting shaft (51) is connected to the bottom of the pointer (2); the abutting component abuts against the surface of the connecting member (7).

9. The angle measuring device for an electrical connector connector according to claim 8, characterized in that: The abutting component includes a fixed shaft (52) and an abutting head (53); the fixed shaft (52) is connected to the abutting head (53), and the fixed shaft (52) is connected to the connecting shaft (51); the abutting head (53) abuts against the connecting member (7).

10. The angle measuring device for an electrical connector connector according to claim 1, characterized in that: A pin (21) is provided in the middle of the pointer (2), and the pin (21) is connected to a bearing on the dial (1); the bearing is provided at the center of the dial (1).

11. The angle measuring device for an electrical connector connector according to claim 6, characterized in that: Both the first elastic member (34) and the second elastic member (43) are springs.

12. An angle measuring method for an electrical connector connector, characterized in that, This method is implemented based on an angle measuring device for an electrical connector connecting member described in any one of claims 1 to 11, and includes the following specific method steps: S1: Connect the positioning member (42) of the positioning component (4) in the dial mechanism to the slot (61) of the electrical connector (6), and use a plurality of fixing claws (31) of the fixing component (3) in the dial mechanism to fix the electrical connector (6); S2: Make the connecting member fixing mechanism (5) abut against the connecting member (7); S3: Read the dial scale value pointed to by the pointer (2), judge the angle between the connecting member (7) and the electrical connector (6) according to the read dial scale value, and then adjust the connection between the connecting member (7) and the electrical connector (6).

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