A positioning tool for assembling a moving contact mechanism and a method of using the same

Abstract

The present invention discloses a positioning tool for assembling a moving contact mechanism and a method for using the positioning tool, wherein the positioning tool comprises a base, a contact support positioning part, a contact positioning block and a lock positioning block, wherein the lock positioning block and the contact positioning block are respectively located on the left and right sides of the contact support positioning part; a contact support positioning structure is provided at the upper end of the contact support positioning part, a contact positioning structure is provided at the upper end of the contact positioning block, and a lock positioning structure is provided at the upper end of the lock positioning block; a support platform for supporting the upper end of a torsion spring is provided at the right end of the contact support positioning part; the contact positioning block can move in the left and right directions to approach and move away from the contact support positioning part; the lock positioning block can move in the left and right directions and in the front and rear directions, and the lock positioning block moves in the left and right directions to approach and move away from the contact support positioning part. The positioning tool in the present invention is more convenient to assemble the moving contact mechanism, has good applicability, and can be beneficial to improving the assembly efficiency of the moving contact mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of moving contact mechanism assembly, and in particular relates to a positioning tool for moving contact mechanism assembly and a use method thereof. Background Art

[0002] The moving contact mechanism is a key component in electrical switching equipment, and is mainly responsible for completing the on-off operation of the circuit. The moving contact mechanism usually moves within a certain allowable range, and realizes the on-off operation of the circuit by cooperating with the static contact. In addition, the moving contact mechanism on the market is widely used, among which the use in circuit breaker products is more common. With the continuous derivation and development of circuit breaker products, the structures of the moving contact mechanisms used in circuit breakers of different types, specifications and manufacturers are also different, so the tooling used for assembly cannot be universal.

[0003] An existing moving contact mechanism structure is as follows Figures 1 to 4 As shown, the moving contact mechanism is applied to a small circuit breaker, comprising a contact support 40, a lock 50, a torsion spring 60, a moving contact 70 and a positioning pin 80, wherein the contact support 40, the lock 50, the torsion spring 60 and the moving contact 70 are connected by the positioning pin 80; a connecting hole 702 for connecting an external component is provided on the moving contact 70; a protruding block 570 is provided at one end of the lock 50, an extension arm 560 arranged at an angle to the protruding block 570 and a projection 570 provided between the protruding block 570 and the extension arm 560 The limit block 502 at the joint of the extension arm 560 has a limit cavity 5021 formed on the limit block 502, a first latch hole 580 is provided at the end of the protruding block 570, and a convex shaft 501 is provided on the lock buckle 50 on the side facing away from the limit block 502; the contact bracket 40 is provided with a notch 90 and a first side wall 450 and a second side wall 460 located on opposite sides of the notch 90, and a limit portion 401 extending into the limit cavity 5021 is provided on the end of the first side wall 450. The first side wall 450 and the second side wall 460 are provided with a second pin hole 470 extending therethrough at a relative position, and the limiting portion 401 extends into the limiting cavity 5021, so as to limit the rotation angle between the contact bracket 40 and the lock buckle 50; the end of the moving contact 70 away from the moving contact point thereon is an axial connection end 704, and a third pin hole 701 is provided therethrough on the axial connection end 704, and the protruding block 570 on the lock buckle 50 extends into the notch 90 of the contact bracket 40, and the torsion spring 60 limits Located between the first side wall 450 of the contact bracket 40 and the protruding block 570, and sleeved on the first latch hole 580 on the side of the protruding block 570, the first end 601 of the torsion spring 60 abuts against the moving contact 70, and the second end 602 of the torsion spring 60 abuts against the edge of the limiting portion 401 of the contact bracket 40, and the positioning pin 80 passes through the first latch hole 580, the second latch hole 470, the third latch hole 701 and the torsion spring 60, connecting the various components to complete the assembly of the moving contact mechanism.

[0004] In the prior art, the assembly of the above-mentioned moving contact mechanism is usually completed manually. During manual assembly, the components are prone to movement and cannot be effectively positioned. In addition, since the torsion spring 60 needs to be in a compressed state after the moving contact mechanism is installed, the torsion spring 60 needs to be compressed during assembly. In addition, the overall volume of the moving contact mechanism used in small circuit breakers is relatively small, which leads to relatively complicated assembly operations of the moving contact mechanism, which greatly affects the efficiency of assembly production. Summary of the invention

[0005] In this regard, an object of the present invention is to provide a positioning tool that is convenient for assembling a moving contact mechanism, and a method of using the positioning tool for assembling a moving contact mechanism.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a positioning tool for assembling a moving contact mechanism, comprising a base, and a contact bracket positioning part, a contact positioning block and a lock positioning block arranged on the base, wherein the lock positioning block and the contact positioning block are respectively located at the left and right sides of the contact bracket positioning part; the upper end of the contact bracket positioning part is provided with a contact bracket positioning structure for positioning the contact bracket so that the contact bracket is arranged in the left and right directions and the notch is facing upwards, the upper end of the contact positioning block is provided with a contact positioning structure for positioning the moving contact so that the moving contact is arranged in the left and right directions and the upper axial connection end thereof protrudes to the left, the upper end of the lock positioning block is provided with a lock positioning structure for positioning the lock so that the protruding block of the lock protrudes to the right; the right side end of the contact bracket positioning part is provided with a support platform for forming a support for the upper end of the torsion spring; the contact positioning block can be moved in the left and right directions to approach and move away from the contact bracket positioning part; the lock positioning block can be moved in the left and right directions and the front and rear directions, and the lock positioning block moves in the left and right directions to approach and move away from the contact bracket positioning part.

[0008] Preferably, a spring 1 is installed between the base and the contact positioning block, and the spring 1 enables the contact positioning block to maintain a tendency to move leftward.

[0009] Preferably, the contact positioning structure includes an upwardly protruding positioning protrusion and a downwardly recessed avoidance groove provided at the upper end of the contact positioning block, wherein the positioning protrusion is suitable for snap-fitting with the connecting hole on the moving contact, and the avoidance groove is suitable for making way for the contact end of the moving contact.

[0010] Preferably, the contact bracket positioning structure includes a positioning slot arranged at the upper end of the contact bracket positioning portion, the positioning slot is suitable for the contact bracket to be embedded, the inner bottom surface of the positioning slot is suitable for forming an upward support for the contact bracket; a magnet for adsorbing the contact bracket is embedded on the inner bottom surface.

[0011] Preferably, the inner bottom surface of the positioning slot is an inclined surface which is lower on the left and higher on the right.

[0012] Preferably, the lock positioning structure includes a positioning shaft groove, a receiving groove, a supporting surface and an abutment block. When the lock is positioned on the lock positioning structure, the positioning shaft groove is suitable for forming a positioning match with the convex shaft on the lock, the supporting surface is suitable for forming an upward support for the limit block on the lock, the receiving groove is suitable for accommodating the extended end on the lock, and the abutment block is suitable for abutting against the limit block on the lock from the left side.

[0013] Preferably, a mounting groove is provided on the base on the left side of the contact bracket positioning portion, and a mounting slider that can slide forward and backward is installed in the mounting groove. The lock positioning block can be slid left and right and is installed on the upper part of the mounting slider. When the mounting slider moves forward and backward, it drives the lock positioning block to move forward and backward, so as to realize the movement of the lock positioning block in the front and rear directions and left and right directions relative to the base.

[0014] Preferably, a second spring is provided between the base and the lock positioning block, and the second spring enables the lock positioning block to maintain a tendency to move to the right. A third spring is provided between the mounting slide block and the base, and the third spring enables the mounting slide block to maintain a tendency to move forward. A stopper is fixed on the base to limit the mounting slide block.

[0015] Preferably, an opening one is provided on the base below the lock positioning block, and the opening one is used for an external driving member to extend into to drive the lock positioning block to move. An opening two is provided on the base below the contact positioning block, and the opening two is used for an external driving member to extend into to drive the contact positioning block to move.

[0016] The present invention also provides a method for assembling a moving contact mechanism using a positioning tool, comprising the following steps:

[0017] S1: positioning the contact support on the contact support positioning portion through the contact support positioning structure, so that the contact support is arranged in the left-right direction and the notch of the contact support faces upward;

[0018] S2: Move the lock catch positioning block to the left end, position the lock catch on the lock catch positioning block through the lock catch positioning structure, make the protruding block on the lock catch face rightward, and move the lock catch positioning block rightward to be close to the contact bracket positioning portion, at this time, the limiting portion on the contact bracket extends into the limiting through cavity of the lock catch, and at the same time, the protruding block on the lock catch extends into the notch of the contact bracket, and the first pin hole on the protruding block is aligned with the second pin hole on the contact bracket in the front-to-back direction;

[0019] S3: Control the lock positioning block to move backward so that a gap for the torsion spring to be installed is formed between the protruding block and the first side wall of the contact bracket, and the torsion spring is installed in the gap so that the first end of the torsion spring abuts against the support platform, and the second end of the torsion spring is above the limiting portion of the lock; then control the lock positioning block to move forward, drive the protruding block of the lock to approach the first side wall of the contact bracket, so that the torsion spring is sleeved on the protruding block of the lock;

[0020] S4: When the control contact positioning block is at the right end, the moving contact is positioned on the contact positioning block through the contact positioning structure so that the shaft connection end of the moving contact faces left; then the control contact positioning block is moved leftward to be close to the contact bracket positioning portion so that the shaft connection end of the moving contact is engaged with the lock catch, at which time the third latch hole on the shaft connection end is aligned with the second latch hole and the first latch hole in the front-to-back direction, and the first end of the torsion spring is in contact with the moving contact;

[0021] S5: The positioning pin passes through the third pin hole, the second pin hole, the first pin hole and the torsion spring, and then the second end of the torsion spring is pressed downward to make it abut against the edge of the limiting portion of the contact bracket, thereby completing the assembly of the moving contact mechanism, and finally removing the moving contact mechanism from the positioning tooling.

[0022] The positive effect of the present invention is that the positioning tooling designed in the present invention can adapt to Figures 1 to 4 The assembly of the moving contact mechanism shown in the figure is conducive to improving assembly efficiency, and can adapt to the needs of automated assembly and manual assembly, and has good practicality; a base for installing the positioning tool is provided on the positioning tool used for assembling the moving contact mechanism, and a contact bracket positioning part, a contact positioning block and a lock positioning block distributed on the base are provided, wherein the contact bracket positioning part is provided with a contact bracket positioning structure for positioning the contact bracket, the contact positioning block is provided with a contact positioning structure for setting the moving contact, and the lock positioning block is provided with a lock positioning structure for setting the lock, and the contact is adopted. A support platform for supporting one end of the torsion spring is arranged at the right end of the head bracket positioning part, and at the same time, the contact positioning block can approach or move away from the contact bracket positioning part in the left and right directions, and the lock positioning block can approach and move away from the contact bracket positioning part in the left and right directions and move in the front and rear directions, thereby making it possible for the moving contact mechanism to position the various components of the moving contact mechanism and perform subsequent assembly actions through the positioning tool during the assembly stage; the assembly of the moving contact mechanism through the positioning tool can greatly improve its production efficiency and installation convenience compared to the completely manual assembly method in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the specific implementation or the prior art description. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a three-dimensional schematic diagram of a moving contact mechanism from a first viewing angle;

[0025] Figure 2 is a three-dimensional schematic diagram of the moving contact mechanism from a second viewing angle;

[0026] Figure 3 This is an exploded schematic diagram of the moving contact mechanism from the first perspective;

[0027] Figure 4 This is an exploded schematic diagram of the moving contact mechanism from the second perspective;

[0028] Figure 5 It is a structural schematic diagram of the positioning tool in the present invention;

[0029] Figure 6 It is an exploded schematic diagram of the positioning tool in the present invention;

[0030] Figure 7 for Figure 5 The enlarged schematic diagram of point A in the middle;

[0031] Figures 8 to 15 It is a schematic diagram of the decomposition during the process of assembling the moving contact mechanism by using the positioning tool in the present invention.

[0032] The reference numerals shown in the figure are: 1. contact support positioning part; 11. positioning card slot; 2. contact positioning block; 21. positioning convex block; 22. extension block; 23. avoidance groove; 24. limit slider; 3. spring one; 4. installation slider; 5. base; 51. opening one; 52. opening two; 53. installation groove; 6. lock positioning block; 61. accommodating groove; 62. abutment block; 63. positioning shaft groove; 64. support surface; 7. support platform; 8. magnet; 9. installation slideway; 20. spring two; 30. spring three; 10. stopper; 40. contact support; 401. limit part; 470. second latch hole; 450. first side wall; 460. second side wall; 50. lock; 501. convex shaft; 502, limit block; 5021, limit through cavity; 560, extension end; 570, protrusion block; 580, first latch hole; 60, torsion spring; 601, first end; 602, second end; 70, moving contact; 701, third latch hole; 702, connecting hole; 703, contact end; 704, shaft connection end; 80, positioning pin; 90, notch; 100, gap. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples and cannot be used to limit the protection scope of the present invention.

[0034] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0035] like Figure 5-15As shown, the positioning tool for assembling the movable contact mechanism of the embodiment of the present invention comprises a base 5, and a contact support positioning portion 1, a contact positioning block 2 and a lock positioning block 6 arranged on the base 5, wherein the lock positioning block 6 and the contact positioning block 2 are respectively located on the left and right sides of the contact support positioning portion 1; the contact support positioning portion 1 can be fixedly connected to the base 5 by assembly, or the contact support positioning portion 1 and the base 5 are integrally formed; the upper end of the contact support positioning portion 1 is provided with a contact support positioning structure for positioning the contact support 40 so that the contact support 40 is arranged in the left and right direction with the notch 90 facing upwards, and the upper end of the contact positioning block 2 A contact positioning structure is provided for positioning the moving contact 70 so that the moving contact 70 is arranged in the left-right direction and the upper axial connection end 704 thereof protrudes to the left, and a lock positioning structure is provided at the upper end of the lock positioning block 6 for positioning the lock 50 so that the protruding block 570 of the lock 50 protrudes to the right; a support platform 7 is provided at the right end of the contact bracket positioning part 1 for supporting the upper end of the torsion spring 60; the contact positioning block 2 can move in the left-right direction to approach and move away from the contact bracket positioning part 1; the lock positioning block 6 can move in the left-right direction and the front-back direction, and the lock positioning block 6 moves in the left-right direction to approach and move away from the contact bracket positioning part 1.

[0036] By arranging a base 5 for installing the positioning tool, and a contact support positioning portion 1, a contact positioning block 2 and a lock positioning block 6 distributed on the base 5 on the positioning tool for assembling the moving contact mechanism, wherein the contact support positioning portion 1 is provided with a contact support positioning structure for positioning the contact support 40, the contact positioning block 2 is provided with a contact positioning structure for setting the moving contact 70, and the lock positioning block 6 is provided with a lock positioning structure for setting the lock 50, and a contact support positioning portion 1 is provided on the right side end of the contact support positioning portion 1 for positioning the upper end of the torsion spring 60. The supporting support platform 7 is supported, and the contact positioning block 2 can be close to or away from the contact bracket positioning part 1 in the left and right directions, and the lock positioning block 6 can be close to and away from the contact bracket positioning part 1 in the left and right directions and move in the front and rear directions, thereby making it possible for the moving contact mechanism to be positioned and subsequently assembled by the positioning tool during the assembly stage of the moving contact mechanism; the assembly of the moving contact mechanism by the positioning tool can greatly improve its production efficiency and convenience of installation compared with the completely manual assembly method in the prior art.

[0037] like Figure 5 and Figure 6As shown, a spring 3 is installed between the base 5 and the contact positioning block 2, and the spring 3 keeps the contact positioning block 2 moving to the left. When the contact positioning block 2 is at the right end (i.e., away from the end of the contact bracket positioning portion 1), the moving contact 70 is installed. At this time, the spring 3 is in compression. After the external force applied to the contact positioning block 2 is released, the contact positioning block 2 can automatically move to the left and approach the contact bracket positioning portion 1 under the elastic force of the spring 3, thereby improving the convenience of assembly.

[0038] In order to realize the limited installation of the contact positioning block 2, an installation slide 9 extending along the left-right direction can be set on the right side of the contact bracket positioning part 1 on the base 5, and the contact positioning block 2 is slidably installed in the installation slide 9. The installation slide 9 can play a role of moving guidance and installation limitation for the contact positioning block 2; in order to prevent the contact positioning block 2 from detaching from the installation slide 9, a limit slide groove set along the left-right direction can be set on the side wall of the installation slide 9, and a limit slider 24 that cooperates with the limit slide groove is set on the side of the contact positioning block 2. Through the cooperation between the limit slider 24 and the limit slide groove, the contact positioning block 2 can be limited to move in the up and down directions without affecting the left and right movement of the contact positioning block 2, thereby improving the stability and rationality of the structure.

[0039] Furthermore, the spring 3 installed between the base 5 and the contact positioning block 2 can be set in the installation slide 9. By hiding the spring 3 in the installation slide 9, the problem of the spring 3 being exposed to the outside and easily falling off can be avoided; specifically, the left end of the spring 3 is against the right end of the contact positioning block 2, and the right end of the spring 3 is connected to the right end wall of the installation slide 9. The right end wall of the installation slide 9 and the left end of the contact positioning block 2 can be provided with a spring positioning groove for the end of the spring 3 to extend into, so as to install and position the spring 3.

[0040] like Figure 5As shown, the contact positioning structure includes an upwardly protruding positioning protrusion 21 and a downwardly recessed avoidance groove 23 provided on the upper end of the contact positioning block 2. The positioning protrusion 21 is suitable for engaging with the connecting hole 702 on the moving contact 70, and the avoidance groove 23 is suitable for making way for the contact end 703 of the moving contact 70. By providing the positioning protrusion 21 and the avoidance groove 23 on the contact positioning structure, the reliability of the positioning of the moving contact 70 on the contact positioning block 2 can be ensured. When positioning the moving contact 70, the moving contact 70 is placed on the contact positioning block 2, so that the moving contact 70 can be positioned. The positioning protrusion 21 is inserted into the connecting hole 702, so that the contact end 703 on the moving contact 70 extends into the avoidance groove 23, thereby accurately positioning the moving contact 70; in addition, in order to further enhance the stability of positioning, by designing the positioning protrusion 21 and the avoidance groove 23 on the contact positioning block 2, an upwardly protruding extension block 22 can be provided on the contact positioning block 2 near the avoidance groove 23. The two extension blocks 22 form a blocking limit for the moving contact 70 from the front and rear sides of the moving contact 70 to prevent the moving contact 70 from moving, thereby ensuring the reliability of the positioning of the moving contact 70 and facilitating smooth assembly.

[0041] Combination Figure 5 and Figure 7 As shown, the contact support positioning structure includes a positioning slot 11 provided at the upper end of the contact support positioning portion 1, the positioning slot 11 is suitable for the contact support 40 to be embedded, and the inner bottom surface of the positioning slot 11 is suitable for forming an upward support for the contact support 40, so that when the contact support 40 is placed on the contact support positioning portion 1, the contact support 40 is positioned by the positioning slot 11, and the contact support 40 is stably supported by the inner bottom surface of the positioning slot 11. Further, in order to prevent the moving contact 70 from colliding with the contact support 40 when the contact positioning block 2 moves to the left and approaches the contact support positioning portion 1 during assembly, the inner bottom surface of the positioning slot 11 is further made into an inclined surface with a lower left and a higher right, so that the contact support 40 positioned by the contact support positioning structure is inclined with a lower left and a higher right, so as to form a larger gap at the lower right of the contact support 40 to avoid the moving contact 70, thereby ensuring a smooth assembly process. In order to further ensure the reliability of positioning the contact bracket 40, a magnet 8 is fixed in the positioning slot 11, and the magnet 8 can generate suction on the contact bracket 40, thereby enhancing the reliability of positioning the contact bracket 40 by the contact bracket positioning structure. Preferably, an embedding groove is provided on the bottom surface of the positioning slot 11, and the magnet 8 is embedded in the embedding groove and fixed, and the upper surface of the magnet 8 is further arranged to be flush with the inner bottom surface of the positioning slot 11, so that the contact bracket 40 is embedded in the positioning slot 11, and the bottom surface of the contact bracket 40 is in contact with the inner bottom surface of the positioning slot 11 and the upper surface of the magnet 8, so as to ensure that the magnet 8 generates effective suction on the contact bracket 40, thereby ensuring the reliability of positioning the contact bracket 40.

[0042] like Figure 5, Figures 7 to 9 As shown, the lock buckle positioning structure includes a positioning shaft groove 63, a receiving groove 61, a support surface 64 and an abutment block 62. When the lock buckle 50 is positioned on the lock buckle positioning structure, the positioning shaft groove 63 is suitable for forming a positioning match with the convex shaft 501 on the lock buckle 50, the support surface 64 is suitable for forming an upward support for the limit block 502 on the lock buckle 50, the receiving groove 61 is suitable for accommodating the extension end 560 on the lock buckle 50, and the abutment block 62 is suitable for abutting against the limit block 502 on the lock buckle 50 from the left side. The lock 50 can be reliably placed and positioned on the lock positioning block 6, ensuring a smooth assembly process of the lock 50; during the design stage of the lock positioning structure on the lock positioning block 6, the support surface 64 and the abutment block 62 can be set on the insert, and the insert is embedded and fixed on the lock positioning block 6. Compared with directly molding the corresponding part of the lock positioning structure on the lock positioning block 6, the manufacturing difficulty can be reduced to a certain extent, making the lock positioning structure on the lock positioning block 6 easier to manufacture.

[0043] like Figure 5 and Figure 6 As shown, a mounting groove 53 is provided on the base 5 on the left side of the contact bracket positioning part 1, and a mounting slide block 4 that can slide forward and backward is installed in the mounting groove 53, and the lock positioning block 6 can be slid left and right and installed on the upper part of the mounting slide block 4. When the mounting slide block 4 moves forward and backward, it drives the lock positioning block 6 to move forward and backward, so as to realize the design of the lock positioning block 6 moving relative to the base 5 in the front and rear directions and left and right directions. When the positioning tooling is used for assembly, in order to facilitate the installation of the torsion spring 60, during the installation stage of the torsion spring 60, the lock positioning block 6 is driven to move backward by the mounting slide block 4, so that the lock 50 on the lock positioning block 6 is also moved backward to a certain extent, so that the protruding block 570 and the moving contact bracket 40 are in contact with each other. The spacing between the first side wall 450 is increased to form a gap 100 that is convenient for the torsion spring 60 to be installed. The torsion spring 60 is installed in the gap 100. In this state, in order to prevent the protruding block 570 from causing interference to the moving contact 70 when the moving contact 70 is installed, the installation slider 4 is controlled to drive the lock positioning block 6 to move forward, so that the spacing of the installation part of the torsion spring 60 (that is, the spacing between the protruding block 570 and the first side wall 450) is reduced, so that the torsion spring 60 can be smoothly sleeved on the side of the protruding block 570 of the lock 50, and secondly, because the protruding block 570 and the second side wall 460 of the contact bracket 40 leave space for the corresponding part of the moving contact 70 to be smoothly inserted, it helps to optimize the assembly process. Through reasonable structural settings, the position adjustment of the corresponding components during assembly is more flexible, effectively avoiding interference and jamming problems during assembly and rotation, and improving production efficiency.

[0044] Exemplarily, the mounting slider 4 is slidably limited and installed on the base 5 by cooperating between the first dovetail groove and the first dovetail boss between the mounting slider 4 and the second dovetail boss between the locking positioning block 6 and the mounting slider 4.

[0045] like Figure 5-7 As shown in 10-12, a spring 20 is provided between the base 5 and the lock positioning block 6, and the spring 20 keeps the lock positioning block 6 moving to the right. A spring 30 is provided between the mounting slider 4 and the base 5, and the spring 30 keeps the mounting slider 4 moving forward. A stopper 10 for stopping and limiting the mounting slider 4 is fixed on the base 5, wherein the purpose of the spring 20 and the spring 30 is similar to that of the spring 1 3, and is also used to ensure the convenience of driving, and the drive by external force. In the use mode of moving the installation slider 4 and the lock positioning block 6, when the external force is removed, the installation slider 4 and the lock positioning block 6 can be moved and reset in time under the elastic force of the spring three 30 and the spring two 20 respectively; a stopper 10 for stopping and limiting the installation slider 4 is fixed on the base 5. Under normal circumstances, the installation slider 4 is stopped on the stopper 10 under the elastic force of the spring two 20, thereby limiting the moving stroke of the installation slider 4 to prevent the installation slider 4 from detaching from the base 5, thereby ensuring the stability of the positioning tooling structure.

[0046] like Figure 6 As shown, an opening 51 is provided on the base 5 below the lock positioning block 6, and the opening 51 is used for an external driving member to extend therein to drive the lock positioning block 6 to move. An opening 52 is provided on the base 5 below the contact positioning block 2, and the opening 52 is used for an external driving member to extend therein to drive the contact positioning block 2 to move. This structural design can better adapt to the use of the positioning tool on automated assembly equipment. The external driving member 1 extends into the opening 51 and can push the lock positioning block 6 to move as required through the movement of the external driving member 1. The external driving member 2 extends into the opening 52 and can push the contact positioning block 2 to move as required through the movement of the external driving member 2.

[0047] In the present invention, the method for assembling the moving contact mechanism using the positioning tool comprises the following steps:

[0048] S1: Positioning the contact support 40 on the contact support positioning portion 1 through the contact support positioning structure, so that the contact support 40 is arranged in the left-right direction and the notch 90 of the contact support 40 faces upward;

[0049] S2: Move the lock positioning block 6 to the left end (ie, away from the contact support positioning portion 1), and position the lock 50 on the lock positioning block 6 through the lock positioning structure, so that the protruding block 570 on the lock 50 faces right, see Figure 8 As shown; the lock positioning block 6 is moved to the right to be close to the contact bracket positioning portion 1, at this time, the limiting portion 401 on the contact bracket 40 extends into the limiting through cavity 5021 of the lock 50, and at the same time, the protruding block 570 on the lock 50 extends into the notch 90 of the contact bracket 40, and the first latch hole 580 on the protruding block 570 is aligned with the second latch hole 470 on the contact bracket 40 in the front-to-back direction, see Fig. 9 As shown;

[0050] S3: Control the lock positioning block 6 to move backward so that a gap 100 is formed between the protruding block 570 and the first side wall 450 of the contact support 40 for the torsion spring 60 to be installed, see Fig.10 Then the torsion spring 60 is installed in the gap 100, so that the first end 601 of the torsion spring 60 abuts against the support table 7, while the second end 602 of the torsion spring 60 is above the limiting portion 401 of the lock 50, see Fig.11 Then control the lock positioning block 6 to move forward, drive the lock 50 of the raised block 570 close to the first side wall 450 of the contact bracket 40, so that the torsion spring 60 is sleeved on the lock 50 of the raised block 570, see Fig.12 As shown;

[0051] S4: When the control contact positioning block 2 is at the right end (i.e., away from the contact support positioning portion 1), the moving contact 70 is positioned on the contact positioning block 2 through the contact positioning structure so that the shaft connection end 704 of the moving contact 70 faces left (i.e., toward the contact support 40), see Fig.13 and Fig.14 As shown; then the contact positioning block 2 is controlled to move leftward to the contact bracket positioning portion 1, so that the shaft end 704 of the moving contact 70 is connected with the lock buckle 50, at this time, the third latch hole 701 on the shaft end 704 is aligned with the second latch hole 470 and the first latch hole 580 in the front-to-back direction, and the first end 601 of the torsion spring 60 is in contact with the moving contact 70, see Fig.15 ;

[0052] S5: Insert the positioning pin 80 through the third pin hole 701, the second pin hole 470, the first pin hole 580 and the torsion spring 60, and then press the second end 602 of the torsion spring 60 downward to make it abut against the edge of the limiting portion 401 of the contact bracket 40, thereby completing the assembly of the moving contact mechanism, and finally remove the moving contact mechanism from the positioning tooling.

[0053] The use of the positioning tool in the present invention and the use method described above are beneficial to the assembly of the moving contact mechanism, can effectively improve the assembly efficiency, and can be applied to different usage scenarios of auxiliary positioning during manual assembly and automated assembly production, and has good practicality.

[0054] For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A positioning tool for assembling a moving contact mechanism, characterized in that: The invention comprises a base (5), and a contact support positioning portion (1), a contact positioning block (2) and a locking positioning block (6) arranged on the base (5), wherein the locking positioning block (6) and the contact positioning block (2) are respectively located on the left and right sides of the contact support positioning portion (1); the upper end of the contact support positioning portion (1) is provided with a contact support positioning structure for positioning the contact support (40) so that the contact support (40) is arranged in the left-right direction and the notch (90) is facing upwards; the upper end of the contact positioning block (2) is provided with A contact positioning structure for positioning the moving contact (70) so that the moving contact (70) is arranged in the left-right direction and its upper shaft connection end (704) protrudes to the left; the upper end of the lock positioning block (6) is provided with a lock positioning structure for positioning the lock (50) so that the protruding block (570) of the lock (50) protrudes to the right; the right end of the contact support positioning portion (1) is provided with a support table (7) for supporting the upper end of the torsion spring (60); the contact positioning block (2) can be moved in the left-right direction to approach and move away from the contact The bracket positioning portion (1); the lock positioning block (6) can move in the left-right direction and the front-back direction, and the lock positioning block (6) moves in the left-right direction to approach and move away from the contact bracket positioning portion (1); the contact positioning structure comprises an upwardly protruding positioning protrusion (21) provided on the upper end of the contact positioning block (2), and the positioning protrusion (21) is suitable for snap-fitting with the connecting hole (702) on the moving contact (70); the lock positioning structure comprises a positioning shaft groove (63), a containing groove (61), a bracket The support surface (64) and the abutment block (62) are adapted to form a positioning match with the convex shaft (501) on the lock buckle (50) when the lock buckle (50) is positioned on the lock buckle positioning structure, the positioning shaft groove (63) is adapted to form a positioning match with the convex shaft (501) on the lock buckle (50), the support surface (64) is adapted to form an upward support for the limit block (502) on the lock buckle (50), the accommodating groove (61) is adapted to accommodate the extension end (560) on the lock buckle (50), and the abutment block (62) is adapted to abut against the limit block (502) on the lock buckle (50) from the left side.

2. The positioning tool for assembling the movable contact mechanism according to claim 1, characterized in that: A spring 1 (3) is arranged between the base (5) and the contact positioning block (2), and the spring 1 (3) enables the contact positioning block (2) to maintain a tendency to move to the left.

3. The positioning tool for assembling the movable contact mechanism according to claim 1, characterized in that: The contact positioning structure further comprises a downwardly recessed avoidance groove (23) provided at the upper end of the contact positioning block (2), wherein the avoidance groove (23) is suitable for making way for the contact end (703) of the moving contact (70).

4. The positioning tool for assembling the movable contact mechanism according to claim 1, characterized in that: The contact support positioning structure comprises a positioning slot (11) provided at the upper end of the contact support positioning portion (1); the positioning slot (11) is suitable for the contact support (40) to be embedded; the inner bottom surface of the positioning slot (11) is suitable for forming an upward support for the contact support (40); a magnet (8) for adsorbing the contact support (40) is embedded on the inner bottom surface.

5. The positioning tool for assembling the movable contact mechanism according to claim 4, characterized in that: The inner bottom surface of the positioning slot (11) is an inclined surface that is lower on the left and higher on the right.

6. The positioning tool for assembling the movable contact mechanism according to claim 1, characterized in that: The base (5) is provided with a mounting groove (53) on the left side of the contact bracket positioning portion (1), and a mounting slide block (4) that can slide forward and backward is installed in the mounting groove (53). The lock positioning block (6) can slide left and right and is installed on the upper part of the mounting slide block (4). When the mounting slide block (4) moves forward and backward, it drives the lock positioning block (6) to move forward and backward, so as to realize the movement of the lock positioning block (6) in the front-back direction and the left-right direction relative to the base (5).

7. The positioning tool for assembling the movable contact mechanism according to claim 6, characterized in that: A second spring (20) is provided between the base (5) and the lock positioning block (6), and the second spring (20) enables the lock positioning block (6) to maintain a tendency to move rightward. A third spring (30) is provided between the mounting slide block (4) and the base (5), and the third spring (30) enables the mounting slide block (4) to maintain a tendency to move forward. A stopper (10) for stopping and limiting the mounting slide block (4) is fixed on the base (5).

8. The positioning tool for assembling the movable contact mechanism according to claim 1, characterized in that: The base (5) is provided with an opening (51) below the lock positioning block (6), and the opening (51) is used for an external driving member to extend into to drive the lock positioning block (6) to move. The base (5) is provided with an opening (52) below the contact positioning block (2), and the opening (52) is used for an external driving member to extend into to drive the contact positioning block (2) to move.

9. A method for using the positioning tool according to any one of claims 1 to 8, comprising the following steps: S1: positioning the contact support (40) on the contact support positioning portion (1) by means of a contact support positioning structure, so that the contact support (40) is arranged in the left-right direction and the notch (90) of the contact support (40) faces upwards; S2: Move the lock catch positioning block (6) to the left end, position the lock catch (50) on the lock catch positioning block (6) through the lock catch positioning structure, make the protruding block (570) on the lock catch (50) face rightward, and move the lock catch positioning block (6) to the right until it is close to the contact bracket positioning portion (1), at which time the limiting portion (401) on the contact bracket (40) extends into the limiting cavity (5021) of the lock catch (50), and at the same time, the protruding block (570) on the lock catch (50) extends into the notch (90) of the contact bracket (40), and the first latch hole (580) on the protruding block (570) is aligned with the second latch hole (470) on the contact bracket (40) in the front-to-back direction; S3: Control the lock catch positioning block (6) to move backward so that a gap (100) is formed between the protruding block (570) and the first side wall (450) of the contact bracket (40) for the torsion spring (60) to be installed, and install the torsion spring (60) into the gap (100) so that the first end (601) of the torsion spring (60) abuts against the support platform (7), and the second end (602) of the torsion spring (60) is located above the limiting portion (401) of the lock catch (50); Control the lock catch positioning block (6) to move forward, drive the protruding block (570) of the lock catch (50) to approach the first side wall (450) of the contact bracket (40), and make the torsion spring (60) sleeve on the side of the protruding block (570) of the lock catch (50); S4: When the control contact positioning block (2) is at the right end, the moving contact (70) is positioned on the contact positioning block (2) through the contact positioning structure so that the shaft connection end (704) of the moving contact (70) faces left; then the control contact positioning block (2) is moved leftward to be close to the contact support positioning portion (1), so that the shaft connection end (704) of the moving contact (70) is connected with the lock buckle (50), and at this time, the third latch hole (701) on the shaft connection end (704) is aligned with the second latch hole (470) and the first latch hole (580) in the front-to-back direction, and the first end (601) of the torsion spring (60) is in contact with the moving contact (70); S5: Insert the positioning pin (80) through the third latch hole (701), the second latch hole (470), the first latch hole (580) and the torsion spring (60), and then press the second end (602) of the torsion spring (60) downward to make it abut against the edge of the limiting portion (401) of the contact bracket (40), thereby completing the assembly of the moving contact mechanism, and finally removing the moving contact mechanism from the positioning fixture.

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