CN117393383A - Circuit breaker contact mechanism assembling device and assembling method - Google Patents

Abstract

The invention discloses an assembly device and an assembly method of a circuit breaker contact mechanism, which belong to the technical field of low-voltage appliances, and comprise a carrier, a spring plunger, a profiling block and an angle adjusting assembly, wherein the carrier comprises a positioning surface, at least two positioning parts which are arranged in a separated mode along a first horizontal direction and a limit groove which is positioned below the positioning parts and is arranged between two adjacent positioning parts are arranged on the positioning surface, the limit groove is used for fixing a connecting rod, the positioning part is provided with a positioning groove, and the positioning groove and the positioning surface are used for fixing a rotating shaft; at least one group of two spring plungers which are arranged in pairs are respectively arranged in the limiting groove; the profiling block is provided with at least one and is arranged below the limiting groove, and the profiling block is used for fixing the moving contact; the angle adjusting component is used for pushing the contact to rotate around the pin shaft. According to the breaker contact mechanism assembling device provided by the invention, the rotating shaft, the connecting rod and the moving contact are horizontally penetrated through the pin shaft, so that the pin shaft is not easy to fall out, the assembling operation is simplified, and the assembling efficiency is effectively improved.

Description

Circuit breaker contact mechanism assembling device and assembling method

Technical Field

The invention relates to the technical field of piezoelectric devices, in particular to an assembly device and an assembly method for a circuit breaker contact mechanism.

Background

The molded case circuit breaker generally comprises a shell, a moving contact, a rotating shaft, a release and other parts. The movable contact is arranged in the rotating shaft, the on-off of the molded case circuit breaker is controlled through the rotation of the rotating shaft, and meanwhile, in order to ensure the final pressure of the molded case circuit breaker, a torsion spring with larger elasticity is arranged in the rotating shaft.

The plastic shell circuit breaker mainly comprises a rotating shaft, a connecting rod, a moving contact and a torsion spring, wherein the pin hole in the rotating shaft, the pin hole in the connecting rod and the pin hole in the moving contact are required to be aligned during assembly so as to be installed through a pin shaft, but due to the existence of the torsion spring, the torsion spring torsion of the moving contact is required to be overcome, and the assembly difficulty between the rotating shaft and the moving contact is increased.

In the prior art, two general approaches are used for assembly:

firstly, a torsion spring is plugged into a rotating shaft, then a movable contact is clamped and hooked with the torsion spring and pulled downwards, so that a pin hole of the movable contact is aligned with a pin hole on a connecting rod and a pin hole on the rotating shaft, and a pin shaft is inserted. The assembling mode is relatively simple to operate, but has the difficulty in the pretightening force of the torsion spring, the pin holes are difficult to align, and the assembling efficiency is low.

Secondly, assembling the moving contact, the rotating shaft and the connecting rod through a pin shaft, and then plugging the torsion spring into the rotating shaft and clamping the moving contact. In the assembly mode, the pin shaft is easy to fall out under the condition of no pretightening force of the torsion spring, and in the process of plugging the torsion spring into the rotating shaft, the angle of the moving contact needs to be manually adjusted, so that the moving contact is suitable for being clamped with the spring arm of the torsion spring, the operation is complex, and the assembly efficiency is low.

Disclosure of Invention

The invention aims to provide a breaker contact mechanism assembling device which assists in assembling between a rotating shaft and a moving contact, and is high in assembling efficiency.

To achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a circuit breaker contact mechanism assembly quality for the assembly between the round pin axle, pivot, connecting rod, moving contact and the torsional spring of contact mechanism, the round pin axle is used for wearing to establish pivot, connecting rod and moving contact, and the moving contact can rotate around the round pin axle, circuit breaker contact mechanism assembly quality includes:

the carrier comprises a positioning surface, wherein the positioning surface is provided with at least two positioning parts which are arranged in a separated mode along a first horizontal direction, and a limiting groove which is positioned below the positioning parts and between two adjacent positioning parts, the positioning parts are provided with positioning grooves with upward openings and used for fixing a rotating shaft, and the limiting grooves are used for fixing connecting rods;

the spring plungers are respectively provided with at least one group of two spring plungers which are arranged in pairs, and the two spring plungers are used for clamping and connecting rods in the limiting grooves;

the profiling blocks are arranged on the carrier, all the profiling blocks are located below the limiting grooves, one profiling block is arranged corresponding to the limiting groove in the vertical direction, and the profiling blocks are used for being attached to the surfaces of the moving contacts; wherein,

the rotating shaft is fixed in the positioning groove and is attached to the positioning surface, the connecting rod is inserted in the limiting groove and clamped by the spring plunger, and the moving contact is abutted against the profiling block, so that a first assembly position for the pin shaft to penetrate in the first horizontal direction is formed;

the angle adjusting assembly is arranged below the carrier and used for pushing the contact to rotate around the pin shaft along a second horizontal direction to a second assembly position suitable for being clamped with the spring arm of the torsion spring.

Optionally, a mounting channel for the profiling block to extend partially/completely is arranged on the positioning surface or below the carrier, an elastic piece for the profiling block to stretch and reset along the second horizontal direction is arranged in the mounting channel, a first end of the elastic piece is abutted to the bottom surface of the mounting channel, and a second end of the elastic piece is abutted to the profiling block.

Optionally, the limit groove is formed by a carrier concave shape, and at least one plunger groove is respectively arranged on two side surfaces of the limit groove along the first horizontal direction, and the spring plungers are inserted in the plunger grooves in a one-to-one correspondence manner and can stretch and return along the first horizontal direction.

Optionally, a shaft part is arranged on the rotating shaft, the shaft part is in a ladder shape, the positioning part is formed by extending outwards from the positioning surface, the positioning groove is formed above the positioning part, and a groove surface of the positioning groove is concavely formed to be capable of accommodating the shaft part.

Optionally, the angle adjusting assembly comprises a push block positioned below the carrier and capable of being abutted against the movable contact, and a first driving piece which is connected with the push block and capable of moving along a second horizontal direction, wherein the first driving piece is arranged below the carrier; when the first driving piece drives the pushing block to push the contact along the second horizontal direction, the moving contact is lifted upwards by taking the pin shaft as a rotation center.

Optionally, a hook is arranged at one end of the movable contact, which is close to the torsion spring, and the angle adjustment assembly drives the movable contact to lift upwards by taking the pin shaft as a rotation center, so that the inclined top surface of the hook forms an included angle beta with the second horizontal direction, and the angle of alpha/beta is 10 degrees to 20 degrees.

Optionally, a guide groove is formed in the rotating shaft, a spring body of the torsion spring is provided with a guide pin in a penetrating manner, and the torsion spring can be connected in the guide groove through the guide pin;

the circuit breaker contact mechanism assembly device further comprises a pressing mechanism positioned above the carrier, wherein the pressing mechanism is used for pushing against a guide pin positioned in the guide groove to enable the torsion spring to move to a third assembly position, and a spring arm of the torsion spring positioned in the third assembly position is suitable for being clamped with the moving contact.

Optionally, the pressing mechanism comprises a thimble and a second driving piece connected with the thimble, and the second driving piece is used for driving the thimble to resist the deriving pin to move towards the third assembly position along the vertical direction.

Optionally, the pressing mechanism further comprises a needle seat, the upper part of the needle seat is connected with the second driving part, a T-shaped needle groove extending along the first horizontal direction is formed in the lower part of the needle seat, the thimble is of a T shape and comprises a square end part and a cylindrical rod part, and the square end part is slidably arranged in the T-shaped needle groove.

Optionally, still include base and fixed subassembly, the carrier is fixed in the top of base through fixed subassembly, and fixed subassembly includes:

the support posts are at least two and are fixed on the base in a vertical direction in an extending manner;

the clamping blocks are at least two and symmetrically arranged on the support posts, and comprise a pair of clamping arms, wherein the clamping arms are provided with guide channels capable of penetrating through the support posts in a sliding manner, and the clamping blocks are fixedly arranged on the carrier;

the fastening pieces are at least two and symmetrically arranged on the clamping blocks, penetrate through one of the clamping arms of the corresponding clamping blocks and are fastened with the other clamping arm so as to force the two clamping arms to clamp the support column.

Another object of the present invention is to provide an assembling method, suitable for any of the above-mentioned assembling devices of a circuit breaker contact mechanism, comprising the steps of:

s100, mounting a rotating shaft in a positioning groove and attaching the rotating shaft to a positioning surface, wherein a connecting rod penetrates through the limiting groove and is clamped with a spring plunger, and a moving contact abuts against a profiling block to form a first assembly position;

s200, penetrating the pin shaft into the rotating shaft, the connecting rod and the moving contact;

s300, mounting a torsion spring on the rotating shaft;

s400, controlling the angle adjusting assembly to drive the movable contact to rotate to a second assembly position suitable for being clamped with the spring arm of the torsion spring, and enabling the torsion spring to be clamped with the movable contact.

Optionally, step S300 specifically includes the following steps:

the guide pin is penetrated through the spring body of the torsion spring and is placed in the guide groove of the rotating shaft; and

the specific steps of step S400 are:

the angle adjusting component is controlled to drive the movable contact to lift up by an angle alpha by taking the pin shaft as a rotation center so as to enable an included angle beta between the inclined top surface of the hook and the second horizontal direction;

and controlling the pressing mechanism to resist the pushing pin until the spring arm of the torsion spring is clamped with the moving contact.

The beneficial effects are that:

according to the circuit breaker contact mechanism assembling device, the rotating shaft is fixed through the positioning surface and the positioning groove of the carrier, the connecting rod is fixed through the spring plunger and the limiting groove of the carrier, and the moving contact is fixed through the profiling block, so that a first assembling position is formed among the rotating shaft, the connecting rod and the moving contact, namely, pin holes of the rotating shaft, the connecting rod and the moving contact are aligned to be suitable for penetrating through the pin shaft, and the circuit breaker contact mechanism assembling device is convenient and reliable and effectively improves the assembling efficiency. And the pin shaft horizontally penetrates through pin holes of the rotating shaft, the connecting rod and the moving contact, so that the pin shaft is not easy to fall out under the condition of no pretightening force of the torsion spring. After the pin shaft is penetrated, the contact is pushed to rotate around the pin shaft to a second assembly position along the second horizontal direction by the angle adjusting component, the angle of the moving contact is not required to be manually adjusted, the moving contact is suitable for being clamped with the spring arm of the torsion spring, the torsion spring is directly plugged into the rotating shaft, assembly can be completed, operation is simplified, and assembly efficiency is further improved.

The assembly method provided by the invention simplifies the assembly operation between the rotating shaft and the moving contact, and effectively improves the assembly efficiency.

Drawings

Fig. 1 is a schematic structural view of a circuit breaker contact mechanism assembly device provided by the invention;

fig. 2 is a schematic view of a part of a circuit breaker contact mechanism assembly device provided by the invention at a carrier;

fig. 3 is a schematic view of another part of the circuit breaker contact mechanism assembly device provided by the invention at a carrier;

FIG. 4 is a schematic view of the assembled shaft and moving contact according to the present invention;

fig. 5 is a schematic view of a part of the structure of the push block provided by the invention for pushing the contact to rotate;

fig. 6 is a cross-sectional view of the circuit breaker contact mechanism assembly apparatus provided by the present invention at a carrier;

FIG. 7 is a schematic view of a portion of the assembled shaft and moving contact provided by the present invention;

FIG. 8 is a schematic view of a compressing mechanism according to the present invention;

FIG. 9 is a schematic view of another view of the hold-down mechanism provided by the present invention;

FIG. 10 is a schematic view of a thimble according to the present invention;

fig. 11 is a cross-sectional view of the circuit breaker contact mechanism assembly apparatus provided by the present invention at a base;

fig. 12 is a flow chart of the assembly method provided by the invention.

In the figure:

10. a pin shaft; 20. a rotating shaft; 21. a mounting part; 22. a shaft portion; 23. positioning the channel; 24. a guide groove; 30. a connecting rod; 31. a side bar; 32. a through hole; 40. a moving contact; 41. a clamping groove; 42. a hook; 50. a torsion spring; 51. a spring arm; 52. a spring body; 60. a guide pin;

100. a carrier; 101. a positioning surface; 1011. a limit groove; 1012. a mounting channel; 110. a positioning part; 111. a positioning groove; 1111. a groove; 121. a bearing block; 122. positioning strips I; 123. positioning strips II;

200. a spring plunger;

300. profiling blocks; 310. a step surface; 320. a convex portion;

400. an angle adjustment assembly; 410. a pushing block; 420. a first driving member;

500. an elastic member;

600. a compressing mechanism; 610. a thimble; 611. square ends; 612. a cylindrical stem; 620. a second driving piece; 630. a needle stand; 631. a base; 632. a vertical protrusion; 6321. t-shaped needle grooves; 640. a compressing seat;

710. a base; 720. a fixing assembly; 721. a support post; 722. clamping blocks; 7221. a clamp arm; 7222. a guide channel; 723. a fastener; 730. a housing;

810. a controller; 820. operating the key; 830. and a switching power supply.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a circuit breaker contact mechanism assembling apparatus for assembling between a pin 10, a shaft 20, a link 30, a moving contact 40 and a torsion spring 50 of a contact mechanism, the pin 10 is used for penetrating the shaft 20, the link 30 and the moving contact 40, and the moving contact 40 is rotatable about the pin 10.

Specifically, the circuit breaker contact mechanism assembly apparatus includes a carrier 100, a spring plunger 200, a dummy block 300, and an angle adjustment assembly 400.

Specifically, the carrier 100 includes a positioning surface 101, at least two positioning portions 110 arranged along a first horizontal direction and spaced apart from each other are disposed on the positioning surface 101, a limiting slot 1011 is disposed below the positioning portions 110 and disposed between two adjacent positioning portions 110, a positioning slot 111 with an upward opening and for fixing the rotating shaft 20 is disposed on the positioning portion 110, and the limiting slot 1011 is used for fixing the connecting rod 30. At least one group of two spring plungers 200 which are arranged in pairs are respectively arranged in the limit groove 1011, and the two spring plungers 200 are used for clamping and clamping the connecting rod 30 in the limit groove 1011. The profiling blocks 300 are provided with at least one, the profiling blocks 300 are arranged on the carrier 100, all the profiling blocks 300 are located below the limit grooves 1011, one profiling block 300 is arranged corresponding to the limit grooves 1011 along the vertical direction, and the profiling blocks 300 are used for being attached to the surface of the moving contact 40. The direction a in fig. 1 is a first horizontal direction, and the direction c is a vertical direction.

The rotating shaft 20 fixed in the positioning groove 111 and attached to the positioning surface 101, the connecting rod 30 inserted in the limiting groove 1011 and clamped by the spring plunger 200, and the moving contact 40 abutting on the profiling block 300 form a first assembly position for the pin shaft 10 to penetrate along the first horizontal direction. Wherein, the positioning surface 101 is attached to the rotating shaft 20 to limit the rotation of the rotating shaft 20.

Specifically, the angle adjustment assembly 400 is disposed below the carrier 100, and the angle adjustment assembly 400 is configured to urge the contact 40 to rotate around the pin 10 along the second horizontal direction to a second assembly position suitable for being engaged with the spring arm 51 of the torsion spring 50. The direction b in fig. 1 is a second horizontal direction.

In this embodiment, the positioning surface 101 and the positioning groove 111 of the carrier 100 are used to fix the rotating shaft 20, the spring plunger 200 and the limiting groove 1011 of the carrier 100 are used to fix the connecting rod 30, and the dummy block 300 is used to fix the moving contact 40, so that a first assembly position is formed among the rotating shaft 20, the connecting rod 30 and the moving contact 40, i.e. the pin holes of the rotating shaft 20, the connecting rod 30 and the moving contact 40 are aligned to be suitable for penetrating the pin shaft 10, which is convenient and reliable and effectively improves the assembly efficiency. And because the pin shaft 10 horizontally penetrates through the pin holes of the rotating shaft 20, the connecting rod 30 and the moving contact 40, the pin shaft 10 is not easy to fall out under the condition of no pretightening force of the torsion spring 50. After the pin shaft 10 is penetrated, the contact 40 is pushed to rotate around the pin shaft 10 to the second assembly position by the angle adjusting assembly 400 along the second horizontal direction, the angle of the moving contact 40 is not required to be manually adjusted, the moving contact 40 is suitable for being clamped with the spring arm 51 of the torsion spring 50, the torsion spring 50 is directly plugged into the rotating shaft 20, the assembly can be completed, the operation is simplified, and the assembly efficiency is further improved.

In the present embodiment, referring to fig. 1, 2 and 4, the angle adjusting assembly 400 includes a push block 410 located below the carrier 100 and capable of abutting against the moving contact 40, and a first driving member 420 connected to the push block 410 and capable of moving along the second horizontal direction, wherein the first driving member 420 is disposed below the carrier 100. In this embodiment, the moving contact 40 is located below the rotating shaft 20, when the pin shaft 10 passes through the rotating shaft 20, the connecting rod 30 and the moving contact 40, the moving contact 40 keeps a vertical or slightly inclined state due to the gravity, and when the first driving member 420 drives the pushing block 410 to push the contact 40 along the second horizontal direction, the moving contact 40 is lifted upwards with the pin shaft 10 as the rotation center, so that the moving contact is stable and reliable. Wherein the push block 410 may push the contact 40 away from one end of the torsion spring 50 in a second horizontal direction.

As shown in fig. 5, a hook 42 is disposed at one end of the movable contact 40 near the torsion spring 50, and the angle adjustment assembly 400 drives the movable contact 40 to lift up by an angle α with the pin 10 as a rotation center, so that an inclined top surface of the hook 42 forms an angle β with the second horizontal direction, and at this time, the inclined top surface of the hook 42 can guide the spring arm 51 of the torsion spring 50 to slide to be clamped with the hook 42 of the movable contact 40, which is stable and reliable and effectively prevents clamping stagnation. The lifting angle α can be adaptively adjusted according to the shape of the movable contact 40 and the inclination of the inclined top surface of the hook 42, so as to ensure that the hook 42 can be stably clamped with the spring arm 51 of the torsion spring 50. In the present embodiment, in order to ensure smooth sliding of the spring arm 51 of the torsion spring 50 with respect to the inclined top surface of the hook 42 and to facilitate engagement with the hook 42, a portion of the spring arm 51 in contact with the inclined top surface of the hook 42 may be provided in a columnar shape extending in the first horizontal direction. Of course, the spring arm 51 of the torsion spring 50 may be provided in other shapes, which is not limited in this application.

Illustratively, the lift angle α may be 10 ° -20 °. Illustratively, the included angle β may be 10 ° -20 °. The lifting angle α and the included angle β may be other angles, which are not limited in this application.

Illustratively, the first driver 420 may be a cylinder, such as a dual rod cylinder.

Illustratively, the contact mechanism includes at least one moving contact 40. As shown in fig. 4, the contact mechanism includes a plurality of moving contacts 40 distributed at intervals along the first horizontal direction, and the pushing block 410 can simultaneously push the plurality of moving contacts 40, so that the plurality of moving contacts 40 rotate to the second assembly position, thereby effectively improving the assembly efficiency.

Illustratively, the torsion spring 50 is provided with at least one and one-to-one correspondence with the moving contact 40, the pin 10 is provided with at least one and one-to-one correspondence with the moving contact 40, and the link 30 is provided with one. When the movable contacts 40 are provided with a plurality of movable contacts 40, the connecting rod 30 corresponds to one movable contact 40, namely, one pin shaft 10 horizontally penetrates through the pin holes of the connecting rod 30 and the corresponding movable contact 40, and the other pin shafts 10 horizontally penetrate through the pin holes of the other movable contacts 40 in a one-to-one correspondence.

In this embodiment, referring to fig. 3 and 6, a mounting channel 1012 into which the dummy block 300 extends partially/completely is provided on the positioning surface 101 or below the carrier 100, an elastic member 500 for stretching and resetting the dummy block 300 along the second horizontal direction is provided in the mounting channel 1012, a first end of the elastic member 500 abuts against a bottom surface of the mounting channel 1012, and a second end of the elastic member 500 abuts against the dummy block 300. In this embodiment, by the design of the elastic member 500, the moving contact 40 will not be jammed with the dummy block 300 when rotating around the pin 10, and the dummy block 300 is adaptively telescopic relative to the mounting channel 1012, so as to achieve fine adjustment of the position of the moving contact 40, and effectively ensure that the pin 10 passes through the moving contact 40 smoothly.

Illustratively, the elastic member 500 may be a spring.

Illustratively, the dummy block 300 is designed according to the profile of the moving contact 40, and the dummy block 300 is detachably connected with the carrier 100, so as to adapt to different moving contacts 40 by replacing the dummy block 300 with different specifications. In one possible embodiment, the moving contact 40 is provided with a clamping groove 41, and the end of the dummy block 300 located outside the mounting channel 1012 can be inserted into the clamping groove 41 and is attached to the inner wall of the clamping groove 41 to form a limit, so as to position the moving contact 40.

Illustratively, the dummy block 300 is provided in a plurality in one-to-one correspondence with the moving contact 40. Specifically, a plurality of mounting channels 1012 are provided, and each mounting channel 1012 is provided with an elastic member 500 and a dummy block 300.

Illustratively, the carrier 100 includes a carrier block 121, at least one first positioning strip 122 and at least one second positioning strip 123, at least one through slot is formed on the carrier block, and the first positioning strip 122 and the second positioning strip 123 are located at two ends of the through slot and are in one-to-one correspondence with the through slot respectively and form a mounting channel 1012 with the through slot. Specifically, the first positioning strip 122 seals one end of the through groove far away from the profiling block 300, the side of the first positioning strip 122 facing the inside of the through groove is the bottom surface of the mounting channel 1012, and the first end of the elastic piece 500 is abutted with the first positioning strip 122; the second positioning strip 123 protrudes from the through groove, and a step surface 310 corresponding to the second positioning strip 123 is disposed at a portion of the dummy block 300 located in the mounting channel 1012, and the second positioning strip 123 can limit the step surface 310 along the second horizontal direction, so as to prevent the dummy block 300 from being separated from the mounting channel 1012. The bearing block 121 is provided with a positioning surface 101, and the bearing block 121 is provided with a through groove on the positioning surface 101.

In this embodiment, referring to fig. 3 and 4, the shaft 20 is provided with a shaft portion 22, the shaft portion 22 is configured in a stepped shape, which can be understood as that the shaft portion 22 has a shaft shoulder, the positioning portion 110 is formed by extending the positioning surface 101 outwards, a positioning groove 111 is formed above the positioning portion 110, and the positioning groove 111 is configured according to the shaft portion 22, that is, a groove 1111 capable of accommodating the shaft portion 22 is formed by concave groove surface of the positioning groove 111. In this embodiment, the groove surface of the positioning groove 111 is attached to the peripheral portion of the rotating shaft 20, so as to realize radial limitation of the rotating shaft 20, the groove 1111 clamps the shaft portion 22 of the rotating shaft 20 along two side walls lower than the horizontal direction, so that limitation of the rotating shaft 20 along the first horizontal direction is realized, that is, limitation of the rotating shaft 20 along the axial direction is realized, and then the positioning surface 101 is attached to the rotating shaft 20 to limit rotation of the rotating shaft 20, so that fixation of the rotating shaft 20 is realized.

Illustratively, the rotating shaft 20 is provided with a plurality of mounting portions 21 which can be used for mounting the moving contacts 40 in a one-to-one correspondence manner at intervals along the axial direction, and shaft portions 22 are respectively arranged between adjacent mounting portions 21 and/or outside the mounting portions 21 at two ends. For example, the rotation shaft 20 is provided with three mounting portions 21, and the shaft portion 22 and the positioning portion 110 are provided in one-to-one correspondence.

In the present embodiment, referring to fig. 3, 4 and 7, the rotating shaft 20 is provided with a guide slot 24, the spring body 52 of the torsion spring 50 is provided with a guide pin 60, and the torsion spring 50 can be connected to the guide slot 24 through the guide pin 60. Wherein the torsion springs 50 and the guide pins 60 are disposed in one-to-one correspondence.

Specifically, the mounting portion 21 is provided with a positioning channel 23 capable of accommodating the corresponding torsion spring 50 and part of the moving contact 40, wherein one positioning channel 23 can also accommodate the connecting rod 30 and is in a clamping state to the connecting rod 30 so as to limit the connecting rod 30 along the axial direction of the rotating shaft 20, the connecting rod 30 comprises two side rods 31 arranged in parallel, one end of the moving contact 40, which is close to the torsion spring 50, of the two side rods 31 is in a clamping state, namely, the moving contact 40 is limited along the axial direction of the rotating shaft 20, one end of the remaining positioning channels 23, which is close to the torsion spring 50, of the moving contact 40 is in a clamping state so as to limit the moving contact 40 along the axial direction of the rotating shaft 20. Illustratively, taking the example in which the rotation shaft 20 is provided with three mounting portions 21, the positioning channel 23 of the middle mounting portion 21 can accommodate the link 30.

Illustratively, the profiling block 300 may also have a limiting effect on the connecting rod 30 along the axial direction of the rotating shaft 20, and specifically, the two side rods 31 of the connecting rod 30 may be in a clamping state on the profiling block. In this embodiment, the dummy blocks 300 corresponding to the connecting rod 30 may be protruded from the rest of the dummy blocks 300, so that they may form a limit for the two side bars 31 of the connecting rod 30. Specifically, as shown in fig. 6, the dummy block 300 corresponding to the connecting rod 30 is provided with a protrusion 320, the two side bars 31 can form a clamping shape on the protrusion 320, and the protrusion 320 can also form a limit by being attached to the surface of the moving contact 40. Of course, the other dummy blocks 300 may be provided with the protrusions 320, which is not particularly limited in this application.

In this embodiment, referring to fig. 3, the limiting groove 1011 is formed by recessing the carrier 100, and at least one plunger groove is respectively disposed on two sides of the carrier along the first horizontal direction, and the spring plungers 200 are inserted in the plunger grooves in a one-to-one correspondence manner and can be retracted along the first horizontal direction. Wherein both side bars 31 of the link 30 are provided with through holes 32. In this embodiment, when the connecting rod 30 is inserted into the limit slot 1011, the two side rods 31 of the connecting rod 30 can respectively push the corresponding side spring plungers 200 to make the spring plungers 200 extend and retract in the plunger slots, when the spring plungers 200 are opposite to the corresponding through holes 32 along the first horizontal direction, the spring plungers 200 are reset and clamped with the through holes 32, that is, the spring plungers 200 are respectively clamped with the corresponding through holes 32 and clamp the two side rods 31, so that the connecting rod 30 is conveniently fixed, and the position accuracy of the connecting rod 30 is effectively ensured.

In the present embodiment, as shown in fig. 4, a guide groove 24 is provided in the positioning passage 23. The guide pin 60 is inserted into the spring body 52 of the corresponding torsion spring 50 and is placed in the guide groove 24 of the rotating shaft 20, the guide groove 24 has a guiding function on the guide pin 60, and the guide pin 60 is offset, so that the guide pin 60 slides in the guide groove 24 towards the moving contact 40, that is, the torsion spring 50 is driven to move towards the moving contact 40 until the spring arm 51 of the torsion spring 50 is clamped with the hook 42 of the moving contact 40 in the second assembly position.

In this embodiment, referring to fig. 1 and 8 to 10, the circuit breaker contact mechanism assembling apparatus further includes a pressing mechanism 600 located above the carrier 100, where the pressing mechanism 600 is used to push against the guide pin 60 located in the guide slot 24, so as to move the torsion spring 50 to the third assembling position, and the spring arm 51 of the torsion spring 50 located in the third assembling position is adapted to be engaged with the moving contact 40. In this embodiment, by the design of the pressing mechanism 600, the angle adjusting assembly 400 is matched to facilitate the clamping connection between the torsion spring 50 and the moving contact 40, so as to effectively ensure the assembly quality and maintain the assembly consistency.

Specifically, the pressing mechanism 600 includes a thimble 610 and a second driving member 620 connected to the thimble 610, where the second driving member 620 is configured to drive the thimble 610 to move toward the third assembly position along the vertical direction against the deriving pin 60. In the present embodiment, after the moving contact 40 rotates around the pin 10 to the second assembly position suitable for being clamped with the spring arm 51 of the torsion spring 50, the guide pin 60 is inserted into the spring body 52 of the torsion spring 50 and placed in the guide slot 24 of the rotating shaft 20, and the second driving member 620 is controlled to drive the ejector pin 610 to abut against the guide pin 60, so that the torsion spring 50 moves in the guide slot 24 to be clamped with the moving contact 40, and the operation is convenient. Wherein, thimble 610 is provided with at least one.

Specifically, the pressing mechanism 600 further includes a hub 630, the upper side of the hub 630 is connected with the second driving member 620, and a T-shaped needle groove 6321 extending along the first horizontal direction is formed below the hub 630; the thimble 610 is T-shaped, and comprises a square end 611 and a cylindrical rod 612, the square end 611 is slidably arranged in the T-shaped needle groove 6321, so that the position of the thimble 610 along the first horizontal direction can be conveniently adjusted, the thimble 610 is suitable for being abutted against the guide pin 60 and the guide pin 60, interference between the thimble 610 and the spring body 52 of the torsion spring 50 is avoided, and the assembly yield is ensured.

Specifically, compression mechanism 600 further includes a threaded connector (not shown) that is fastened to hub 630 and is capable of compressing square end 611 of needle 610 within T-shaped needle slot 6321 to secure needle 610 relative to hub 630. Wherein, the thimble 610 extends along the vertical direction, and the screw member penetrates through and fastens the needle seat 630 along the horizontal direction to squeeze and fix the thimble 610. In this embodiment, the side surface of the square end 611 of the thimble 610 is pressed by the screw, so that the contact area between the thimble 610 and the screw is large, and the stability of the thimble 610 fixed relative to the needle seat 630 is effectively ensured.

Illustratively, the hub 630 has a T-shape and includes a base 631 and a vertical protrusion 632, the vertical protrusion 632 is provided with a T-shaped needle slot 6321, and the base 631 is connected to the second driving element 620.

Illustratively, when the torsion springs 50 and the guide pins 60 are provided in a plurality of one-to-one correspondence, the ejector pins 610 are provided in a plurality of one-to-one correspondence, and the ejector pins 610 push against the guide pins 60 to complete the assembly of the plurality of groups of torsion springs 50 and the movable contacts 40 at the same time, so as to effectively improve the assembly efficiency. Specifically, the plurality of pins 610 are disposed in the T-shaped pin slot 6321, so that the pins 610 are convenient to install, and the screw connector is loosened, and the pins 610 can slide in the T-shaped pin slot 6321 to finely adjust the horizontal position thereof, so as to ensure that the pins 610 can smoothly abut against the deriving pins 60.

Illustratively, the end of the cylindrical portion 612 of the ejector pin 610 is chamfered or rounded and has a kidney-shaped cross-section such that the second end of the ejector pin 610 is adapted to abut the guide pin 60 to avoid interference of the ejector pin 610 with the spring body 52 of the torsion spring 50. In this embodiment, the side of the square end 611 of the thimble 610 is pressed by the screw to prevent the cylindrical rod 612 from rotating, so as to ensure that the chamfer or fillet of the cylindrical rod 612 forms an effective abdication for the spring body 52 of the torsion spring 50.

For example, the second driver 620 may be a cylinder, such as a two-rod cylinder.

In this embodiment, referring to fig. 1 and 2, the circuit breaker contact mechanism assembly device further includes a base 710 and a fixing assembly 720, and the carrier 100 is fixed above the base 710 by the fixing assembly 720.

Specifically, the fixing assembly 720 includes a boss 721, a clamp block 722, and a fastener 723. Wherein, the struts 721 are provided with at least two and are fixed on the base 710 in a vertical direction; the clamping block 722 is provided with at least two clamping arms 7221 symmetrically arranged on the supporting column 721, the clamping arms 7221 are provided with guide channels 7222 which can penetrate through the supporting column 721 in a sliding mode, and the clamping block 722 is fixedly arranged on the carrier 100; the clamping block 722 is provided with at least two fastening pieces 723, the fastening pieces 723 are symmetrically arranged on the clamping block 722, the fastening pieces 723 penetrate through one of the clamping arms 7221 of the corresponding clamping block 722 and are fastened with the other clamping arm 7221 to force the two clamping arms 7221 to clamp the supporting column 721, so that the position of the carrier 100 relative to the base 710 is fixed, the dismounting is convenient, and the position of the carrier 100 along the vertical direction can be adjusted. In addition, the arrangement of two posts 721 ensures that carrier 100 is positionally stable relative to base 710. Of course, the struts 721 may be provided in other numbers, and the present application is not particularly limited.

In the present embodiment, referring to fig. 1, 8 and 9, the pressing mechanism 600 may be fixed to the supporting column 721 by the clamping blocks 722 and the fasteners 723, so as to fix the pressing mechanism 600 relative to the base 710, and facilitate the assembly and disassembly.

Specifically, the pressing mechanism 600 further includes a pressing seat 640, at least two clamping blocks 722 may be disposed on the pressing seat 640, and the clamping blocks 722 connected to the pressing seat 640 are symmetrically disposed on the supporting columns 721.

In this embodiment, referring to fig. 11, the assembly device of the circuit breaker contact mechanism further includes a control system, the control system includes a controller 810 and an operation key 820 electrically connected to the controller 810, the controller 810 is electrically connected to the first driver 420 and the second driver 620, and the controller 810 receives a control signal of the operation key 820 to control the first driver 420 and the second driver 620 to operate conveniently. In this embodiment, the assembly efficiency can be improved by modifying the programming of the controller 810 to adapt to the assembly takt of the assembly personnel, and when the torsion spring 50 is assembled, the first driving member 420 and the second driving member 620 can be automatically reset, so as to facilitate the removal of the spindle 20 and wait for the assembly of the next spindle 20. Wherein the controller 810 may include, for example, but not limited to, a single-chip microcomputer.

The controller 810 controls the opening and closing of the solenoid valve to control the first driving member 420 and the second driving member 620, and the connection between the first driving member 420 and the second driving member 620 and the solenoid valve is in the prior art, which is not described in detail herein.

Wherein, two operation keys 820 are provided, and when both operation keys 820 are pressed, the controller 810 controls the first driving member 420 and the second driving member 620 to sequentially act, so as to complete the assembly of the torsion spring 50. It will be appreciated that the hands of the assembler each press one of the operating keys 820 to bring the hands into a safe position for improved safety. In this embodiment, after the pin 10 is threaded through the shaft 20, the connecting rod 30 and the moving contact 40 along the first horizontal direction, the guide pin 60 is threaded through the spring body 52 of the corresponding torsion spring 50 and placed in the guide slot 24, then two operating buttons are respectively pressed by two hands, the controller 810 firstly controls the first driving member 420 to act, so that the moving contact 40 rotates to the second assembly position, and the controller 810 then controls the second driving member 620 to act, so as to push the torsion spring 50 to be clamped with the moving contact 40.

Specifically, the control system further includes a switching power supply 830, where the switching power supply 830 supplies power to the controller 810.

Specifically, a housing 730 is provided on the base 710, a cavity for accommodating the controller 810 and the switching power supply 830 is formed between the base 710 and the housing 730, and the control button is fixed on the housing 730.

It will be appreciated that the connection means not explicitly described herein may be a common connection means such as screw connection, welding or bonding, as desired.

Example two

The assembling method which can be applied to the circuit breaker contact mechanism assembling apparatus in the first embodiment, referring to fig. 12, includes the steps of:

s100, the rotating shaft 20 is installed in the positioning groove 111 and is attached to the positioning surface 101, the connecting rod 30 is arranged in the limiting groove 1011 in a penetrating mode and is clamped with the spring plunger 200, and the moving contact 40 abuts against the profiling block 300 to form a first assembly position.

In this embodiment, the rotating shaft 20 may be placed first, then the connecting rod 30 may be placed, and finally the moving contact 40 may be placed, or the connecting rod 30 may be placed first, then the rotating shaft 20 may be placed, and finally the moving contact 40 may be placed.

S200, the pin shaft 10 is penetrated through the rotating shaft 20, the connecting rod 30 and the moving contact 40.

In this embodiment, when the rotating shaft 20 is assembled with the plurality of moving contacts 40, the following steps are further included before the step S100 or after the step S200:

and S210, sequentially abutting the rest of the movable contacts 40 on the corresponding profiling blocks 300 and penetrating the pin shafts 10.

S300, the torsion spring 50 is mounted on the rotating shaft 20.

Specifically, the guide pin 60 is inserted into the spring body 52 of the torsion spring 50 and placed in the guide slot 24 of the rotating shaft 20S 400, and the control angle adjusting assembly 400 drives the moving contact 40 to rotate to a second assembly position suitable for being clamped with the spring arm 51 of the torsion spring 50, and enables the torsion spring 50 to be clamped with the moving contact 40.

The specific steps of step S400 are:

s410, controlling the angle adjusting assembly 400 to drive the movable contact 40 to lift upwards by an angle alpha by taking the pin shaft 10 as a rotation center, so that an included angle beta between the inclined top surface of the hook 42 and the second horizontal direction is formed.

S420, the pressing mechanism 600 is controlled to push the guide pin 60 until the spring arm 51 of the torsion spring 50 is clamped with the movable contact 40.

In step S400, the operations of the angle adjustment assembly 400 and the pressing mechanism 600 are completed by pressing the control key, and the controller 810 receives the control signal of the control key to control the first driving member 420 and the second driving member 620 to complete the operations sequentially.

For the assembly process in the above steps, reference is made to the foregoing related description, and no further description is given here.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (12)

1. A circuit breaker contact mechanism assembly device for assembly between a pin (10), a rotating shaft (20), a connecting rod (30), a moving contact (40) and a torsion spring (50) of a contact mechanism, wherein the pin (10) is used for penetrating the rotating shaft (20), the connecting rod (30) and the moving contact (40), and the moving contact (40) can rotate around the pin (10), the circuit breaker contact mechanism assembly device is characterized by comprising:

the carrier (100) comprises a positioning surface (101), wherein the positioning surface (101) is provided with at least two positioning parts (110) which are arranged in a separated mode along a first horizontal direction, and a limiting groove (1011) which is positioned below the positioning parts (110) and is arranged between two adjacent positioning parts (110), the positioning parts (110) are provided with positioning grooves (111) which are upward in opening and are used for fixing the rotating shaft (20), and the limiting groove (1011) is used for fixing the connecting rod (30);

the spring plungers (200) are respectively arranged in the limit grooves (1011), at least one group of two spring plungers (200) are arranged in pairs, and the two spring plungers (200) are used for clamping the connecting rod (30) in the limit grooves (1011);

the profiling blocks (300) are arranged on the carrier (100), all the profiling blocks (300) are located below the limit grooves (1011), one profiling block (300) is arranged corresponding to the limit groove (1011) along the vertical direction, and the profiling block (300) is used for being attached to the surface of the moving contact (40); wherein,

the rotating shaft (20) is fixed in the positioning groove (111) and is attached to the positioning surface (101), the connecting rod (30) is inserted in the limiting groove (1011) and clamped by the spring plunger (200), and the moving contact (40) abutted against the profiling block (300) form a first assembly position for the pin shaft (10) to penetrate in a first horizontal direction;

the angle adjusting assembly (400) is arranged below the carrier (100), and the angle adjusting assembly (400) is used for pushing the moving contact (40) along a second horizontal direction to rotate around the pin shaft (10) to a second assembly position suitable for being clamped with the spring arm (51) of the torsion spring (50).

2. The circuit breaker contact mechanism assembling device according to claim 1, wherein an installation channel (1012) for the dummy block (300) to partially/completely extend into is provided on the positioning surface (101) or below the carrier (100), an elastic member (500) for the dummy block (300) to retract and reset along the second horizontal direction is provided in the installation channel (1012), a first end of the elastic member (500) is abutted with a bottom surface of the installation channel (1012), and a second end of the elastic member (500) is abutted with the dummy block (300).

3. The circuit breaker contact mechanism assembling device according to claim 1, wherein the limit groove (1011) is formed by the concave shape of the carrier (100), and at least one plunger groove is respectively arranged on two sides of the limit groove along the first horizontal direction, and the spring plungers (200) are inserted in the plunger grooves in a one-to-one correspondence manner and can be retracted along the first horizontal direction.

4. The circuit breaker contact mechanism assembling device according to claim 1, wherein the shaft (20) is provided with a shaft portion (22), the shaft portion (22) is arranged in a stepped shape, the positioning portion (110) is formed by extending outwards from the positioning surface (101), the positioning groove (111) is formed above the positioning portion (110), and a groove (1111) capable of accommodating the shaft portion (22) is formed in a concave shape in a groove surface of the positioning groove (111).

5. The circuit breaker contact mechanism assembly device of claim 1, wherein the angle adjustment assembly (400) comprises a push block (410) located below the carrier (100) and capable of abutting against the movable contact (40), and a first driving member (420) connected with the push block (410) and capable of moving along a second horizontal direction, wherein the first driving member (420) is disposed below the carrier (100); when the first driving piece (420) drives the pushing block (410) to push the moving contact (40) along the second horizontal direction, the moving contact (40) is lifted upwards by taking the pin shaft (10) as a rotation center.

6. The circuit breaker contact mechanism assembling device according to claim 1, wherein a hook (42) is provided at one end of the moving contact (40) close to the torsion spring (50), and the angle adjustment assembly (400) drives the moving contact (40) to lift upwards by using the pin shaft (10) as a rotation center, so that an inclined top surface of the hook (42) forms an angle beta with a second horizontal direction, and the angle alpha/beta is 10 ° -20 °.

7. The assembly device for the contact mechanism of the circuit breaker according to any one of claims 1 to 6, wherein the rotating shaft (20) is provided with a guide groove (24), the spring body (52) of the torsion spring (50) is provided with a guide pin (60) in a penetrating manner, and the torsion spring (50) can be connected in the guide groove (24) through the guide pin (60);

the circuit breaker contact mechanism assembly device further comprises a pressing mechanism (600) located above the carrier (100), wherein the pressing mechanism (600) is used for pushing against the guide pin (60) located in the guide groove (24) to enable the torsion spring (50) to move to a third assembly position, and a spring arm (51) of the torsion spring (50) located in the third assembly position is suitable for being clamped with the movable contact (40).

8. The circuit breaker contact mechanism assembly of claim 7, wherein said hold down mechanism (600) includes a second drive member (620) coupled to said second pin (610) and a second pin (610), said second drive member (620) configured to drive said second pin (610) vertically against said guide pin (60) toward said third assembly position.

9. The circuit breaker contact mechanism assembly device of claim 8, wherein the pressing mechanism (600) further comprises a needle seat (630), the upper side of the needle seat (630) is connected with the second driving part (620), a T-shaped needle groove (6321) extending along the first horizontal direction is formed below the needle seat (630), the ejector pin (610) is T-shaped and comprises a square end portion (611) and a cylindrical rod portion (612), and the square end portion (611) is slidably arranged in the T-shaped needle groove (6321).

10. The circuit breaker contact mechanism assembly of any one of claims 1-6 further comprising a base (710) and a securing assembly (720), said carrier (100) being secured above said base (710) by said securing assembly (720), said securing assembly (720) comprising:

-a pillar (721) at least two and extending in a vertical direction fixed to said base (710);

-a clamping block (722), at least two and symmetrically arranged on the support (721), comprising a pair of clamping arms (7221), the clamping arms (7221) having a guiding channel (7222) slidably passing through the support (721), the clamping block (722) being fixedly arranged on the carrier (100);

and a fastener (723) which is provided on the clamping block (722) at least two and symmetrically, penetrates one of the clamping arms (7221) of the corresponding clamping block (722) and is fastened with the other to force the two clamping arms (7221) to clamp the boss (721).

11. A method of assembling a circuit breaker contact mechanism assembly apparatus as claimed in any one of claims 1 to 10, comprising the steps of:

s100, mounting a rotating shaft (20) in a positioning groove (111) and attaching the rotating shaft to a positioning surface (101), wherein a connecting rod (30) penetrates through a limiting groove (1011) and is clamped with a spring plunger (200), and a moving contact (40) abuts against a profiling block (300) to form a first assembly position;

s200, penetrating a pin shaft (10) into the rotating shaft (20), the connecting rod (30) and the moving contact (40);

s300, mounting a torsion spring (50) on the rotating shaft (20);

s400, controlling the angle adjusting assembly (400) to drive the movable contact (40) to rotate to a second assembly position suitable for being clamped with the spring arm (51) of the torsion spring (50), and enabling the torsion spring (50) to be clamped with the movable contact (40).

12. The method of assembling as claimed in claim 11, wherein said step S300 comprises the steps of:

a guide pin (60) is penetrated through a spring body (52) of the torsion spring (50) and is placed in a guide groove (24) of the rotating shaft (20); and

the specific steps of the step S400 are as follows:

the angle adjusting assembly (400) is controlled to drive the movable contact (40) to upwards lift by an angle alpha by taking the pin shaft (10) as a rotation center so as to enable an inclined top surface of the hook (42) to form an included angle beta with a second horizontal direction;

the pressing mechanism (600) is controlled to push the guide pin (60) until the spring arm (51) of the torsion spring (50) is clamped with the moving contact (40).