A circuit breaker contact mechanism assembly apparatus and method

Abstract

The application discloses a circuit breaker contact mechanism assembling device and an assembling method, and belongs to the technical field of low-voltage electrical apparatuses. The device comprises a carrier, spring plungers, a profiled block and an angle adjusting assembly. The carrier comprises a locating surface, at least two locating portions are arranged on the locating surface and are separated along a first horizontal direction, a limiting groove is arranged below the locating portions and between two adjacent locating portions, the limiting groove is used for fixing a connecting rod, a locating groove is arranged on the locating portion, and the locating groove and the locating surface are used for fixing a rotating shaft. At least one set of two spring plungers is arranged in the limiting groove in pairs. The profiled block is arranged below the limiting groove and is used for fixing a moving contact. The angle adjusting assembly is used for pushing the moving contact to rotate around a pin shaft. The circuit breaker contact mechanism assembling device provided by the application is characterized in that the pin shaft is horizontally arranged through the rotating shaft, the connecting rod and the moving contact, the pin shaft is not easy to fall out, the assembling operation is simplified, and the assembling efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical equipment technology, and in particular to a circuit breaker contact mechanism assembly device and assembly method. Background Technology

[0002] A molded case circuit breaker generally consists of a housing, moving contacts, a rotating shaft, and a trip unit. The moving contacts are installed inside the rotating shaft, and the rotation of the shaft controls the on / off state of the molded case circuit breaker. At the same time, to ensure the final pressure of the molded case circuit breaker, a torsion spring with a large elastic force is installed inside the rotating shaft.

[0003] Among them, the molded case circuit breaker mainly includes a shaft, connecting rod, moving contact and torsion spring. During assembly, it is necessary to align the pin holes on the shaft, the pin holes on the connecting rod and the pin holes on the moving contact so that the pin shaft can be installed. However, due to the presence of the torsion spring, the moving contact needs to overcome the torsion force of the torsion spring, which increases the assembly difficulty between the shaft and the moving contact.

[0004] In existing technologies, two assembly methods are typically used:

[0005] First, insert the torsion spring into the shaft, then use the moving contact to hook and pull down the torsion spring, aligning the pin hole of the moving contact with the pin holes on the connecting rod and the shaft, and then insert the pin. This assembly method is relatively simple to operate, but the difficulty lies in the preload of the torsion spring, which makes it difficult to align the pin holes, resulting in low assembly efficiency.

[0006] Secondly, the moving contact, rotating shaft, and connecting rod are first assembled using a pin, and then the torsion spring is inserted into the rotating shaft and engaged with the moving contact. In this assembly method, the pin is prone to falling out without the preload of the torsion spring, and the angle of the moving contact needs to be manually adjusted during the insertion of the torsion spring into the rotating shaft so that the moving contact is suitable for engaging with the spring arm of the torsion spring. The operation is complicated and the assembly efficiency is low. Summary of the Invention

[0007] One objective of this invention is to provide a circuit breaker contact mechanism assembly device that assists in the assembly between the rotating shaft and the moving contact, resulting in high assembly efficiency.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A circuit breaker contact mechanism assembly device is provided for assembling the pin, rotating shaft, connecting rod, moving contact, and torsion spring of the contact mechanism. The pin is used to pass through the rotating shaft, connecting rod, and moving contact, and the moving contact can rotate around the pin. The circuit breaker contact mechanism assembly device includes:

[0010] The vehicle includes a positioning surface, on which at least two positioning parts are arranged separately along a first horizontal direction, and a limiting groove is located below the positioning parts and disposed between two adjacent positioning parts. The positioning parts are provided with a positioning groove with an upward opening for fixing a rotating shaft, and the limiting groove is used for fixing a connecting rod.

[0011] The spring plunger has at least one set of two spring plungers arranged in pairs in the limiting groove. The two spring plungers are used to clamp and engage the connecting rod in the limiting groove.

[0012] At least one copying block is provided, and the copying blocks are mounted on the carrier. All copying blocks are located below the limiting groove, and one copying block is vertically aligned with the limiting groove. The copying blocks are used to conform to the surface of the moving contact.

[0013] The rotating shaft fixed in the positioning groove and in contact with the positioning surface, the connecting rod inserted into the limiting groove and held and locked by the spring plunger, and the moving contact abutting against the molding block, together form the first assembly position in which the supply pin shaft passes through in the first horizontal direction.

[0014] An angle adjustment assembly is located below the carrier. The angle adjustment assembly is used to push the contact to rotate about the pin in the second horizontal direction to a second assembly position suitable for engaging with the spring arm of the torsion spring.

[0015] Optionally, a mounting channel is provided on the positioning surface or below the carrier for the copying block to partially or completely extend into. An elastic element is provided in the mounting channel for the copying block to retract and reset in a second horizontal direction. The first end of the elastic element abuts against the bottom surface of the mounting channel, and the second end of the elastic element abuts against the copying block.

[0016] Optionally, the limiting groove is formed by the recess of the carrier, and at least one plunger groove is provided on each of its two sides along the first horizontal direction. The spring plungers are inserted into the plunger grooves one by one and can be extended and retracted along the first horizontal direction to reset.

[0017] Optionally, the rotating shaft is provided with a shaft portion, which is stepped. The positioning portion extends outward from the positioning surface. The positioning groove is provided above the positioning portion, and the groove surface of the positioning groove is recessed to form a groove that can accommodate the shaft portion.

[0018] Optionally, the angle adjustment assembly includes a push block located below the carrier and capable of abutting against the moving contact, and a drive member connected to the push block and capable of moving along a second horizontal direction. The drive member is located below the carrier. When the drive member drives the push block to abut against the moving contact along the second horizontal direction, the moving contact rises upward with the pivot pin as the rotation center.

[0019] Optionally, a hook is provided at the end of the moving contact near the torsion spring. The angle adjustment component drives the moving contact to rise upward around the pin as the rotation center by an angle α, which can make the inclined top surface of the hook form an angle β with the second horizontal direction. The angle of α / β is 10°-20°.

[0020] Optionally, a guide groove is provided on the rotating shaft, and a guide pin passes through the spring body of the torsion spring, and the torsion spring can be connected to the guide groove through the guide pin;

[0021] The circuit breaker contact mechanism assembly device also includes a clamping mechanism located above the carrier. The clamping mechanism is used to push the guide pin located in the guide groove to move the torsion spring to the third assembly position. The spring arm of the torsion spring in the third assembly position is adapted to engage with the moving contact.

[0022] Optionally, the clamping mechanism includes a ejector pin and a second drive unit connected to the ejector pin, the second drive unit being used to drive the ejector pin to move vertically against the guide pin toward the third assembly position.

[0023] Optionally, the clamping mechanism also includes a needle seat, the upper part of which is connected to the second drive member, and the lower part of which is provided with a T-shaped needle groove extending along the first horizontal direction. The ejector pin is T-shaped and includes a square end and a cylindrical rod, with the square end slidably disposed in the T-shaped needle groove.

[0024] Optionally, it also includes a base and a fixing assembly, wherein the vehicle is fixed to the base via the fixing assembly, the fixing assembly including:

[0025] Supports, at least two, extending vertically and fixed to the base;

[0026] Clamping blocks, at least two and symmetrically arranged on the support column, each including a pair of clamping arms having guide channels that can slide through the support column, the clamping blocks being fixedly mounted on the carrier;

[0027] Fasteners, at least two and symmetrically arranged on the clamping blocks, pass through one of the clamping arms of the corresponding clamping block and are fastened to the other to force the two clamping arms to clamp the support.

[0028] Another object of the present invention is to provide an assembly method applicable to any of the above-mentioned circuit breaker contact mechanism assembly devices, comprising the following steps:

[0029] S100, Install the rotating shaft in the positioning groove and fit it against the positioning surface, pass the connecting rod through the limiting groove and engage it with the spring plunger, and abut the moving contact against the molding block to form the first assembly position;

[0030] S200, pass the pin through the rotating shaft, connecting rod and moving contact;

[0031] S300. Install the torsion spring onto the shaft.

[0032] S400, the control angle adjustment component drives the moving contact to rotate to the second assembly position suitable for engaging with the spring arm of the torsion spring, and engages the torsion spring with the moving contact.

[0033] Optionally, step S300 specifically includes the following steps:

[0034] The guide pin is inserted into the spring body of the torsion spring and placed in the guide groove of the rotating shaft; and

[0035] The specific steps of step S400 are as follows:

[0036] The angle adjustment component controls the moving contact to rise upward by an angle α around the pivot pin, so that the angle β between the tilted top surface of the hook and the second horizontal direction is equal.

[0037] The control clamping mechanism pushes the guide pin until the spring arm of the torsion spring engages with the moving contact.

[0038] Beneficial effects:

[0039] The circuit breaker contact mechanism assembly device provided by this invention fixes the rotating shaft through the positioning surface and positioning groove of the carrier, fixes the connecting rod through the spring plunger and the limiting groove of the carrier, and fixes the moving contact through the profile block, so that the rotating shaft, connecting rod and moving contact form a first assembly position, that is, the pin holes of the rotating shaft, connecting rod and moving contact are aligned to facilitate the insertion of the pin, which is convenient, reliable and effectively improves assembly efficiency. Furthermore, because the pin is horizontally inserted through the pin holes of the rotating shaft, connecting rod and moving contact, the pin is not easy to fall out without the preload of the torsion spring. After the pin is inserted, the angle adjustment component pushes the contact to rotate around the pin to the second assembly position along the second horizontal direction. Without the need for manual adjustment of the moving contact angle, the moving contact can be adapted to engage with the spring arm of the torsion spring. The torsion spring can be directly inserted into the rotating shaft to complete the assembly, simplifying the operation and further improving assembly efficiency.

[0040] The assembly method provided by this invention simplifies the assembly operation between the rotating shaft and the moving contact, and effectively improves the assembly efficiency. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the circuit breaker contact mechanism assembly device provided by the present invention;

[0042] Figure 2 This is a partial structural schematic diagram of the circuit breaker contact mechanism assembly device provided by the present invention at the carrier.

[0043] Figure 3 This is another structural schematic diagram of the circuit breaker contact mechanism assembly device provided by the present invention at the carrier.

[0044] Figure 4 This is a schematic diagram of the assembled rotating shaft and moving contact provided by the present invention;

[0045] Figure 5 This is a partial structural diagram of the pusher block resisting the rotation of the pusher contact provided by the present invention;

[0046] Figure 6 This is a cross-sectional view of the circuit breaker contact mechanism assembly device provided by the present invention at the carrier.

[0047] Figure 7 This is a partial structural diagram of the assembled rotating shaft and moving contact provided by the present invention;

[0048] Figure 8 This is a schematic diagram of the clamping mechanism provided by the present invention from one perspective;

[0049] Figure 9 This is a schematic diagram of the clamping mechanism provided by the present invention from another perspective;

[0050] Figure 10 This is a schematic diagram of the ejector pin provided by the present invention;

[0051] Figure 11 This is a cross-sectional view of the circuit breaker contact mechanism assembly device provided by the present invention at the base;

[0052] Figure 12 This is a flowchart illustrating the assembly method provided by the present invention.

[0053] In the picture:

[0054] 10. Pin; 20. Rotating shaft; 21. Mounting part; 22. Shaft part; 23. Positioning channel; 24. Guide groove; 30. Connecting rod; 31. Side rod; 32. Through hole; 40. Moving contact; 41. Slot; 42. Hook; 50. Torsion spring; 51. Spring arm; 52. Spring body; 60. Guide pin;

[0055] 100. Carrier; 101. Positioning surface; 1011. Limiting groove; 1012. Installation channel; 110. Positioning part; 111. Positioning groove; 1111. Groove; 121. Bearing block; 122. Positioning strip one; 123. Positioning strip two;

[0056] 200. Spring plunger;

[0057] 300, profile block; 310, stepped surface; 320, convex part;

[0058] 400. Angle adjustment component; 410. Push block; 420. Drive component one;

[0059] 500. Elastic components;

[0060] 600. Clamping mechanism; 610. Ejector pin; 611. Square end; 612. Cylindrical rod; 620. Drive component two; 630. Needle seat; 631. Base; 632. Vertical protrusion; 6321. T-shaped needle groove; 640. Clamping seat;

[0061] 710. Base; 720. Fixing component; 721. Support column; 722. Clamping block; 7221. Clamping arm; 7222. Guide channel; 723. Fastener; 730. Housing;

[0062] 810. Controller; 820. Operation buttons; 830. Switching power supply. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0067] Example 1

[0068] Reference Figures 1 to 4 As shown, this embodiment provides a circuit breaker contact mechanism assembly device for assembling the pin 10, rotating shaft 20, connecting rod 30, moving contact 40 and torsion spring 50 of the contact mechanism. The pin 10 is used to pass through the rotating shaft 20, connecting rod 30 and moving contact 40, and the moving contact 40 can rotate around the pin 10.

[0069] Specifically, the circuit breaker contact mechanism assembly includes a carrier 100, a spring plunger 200, a profile block 300, and an angle adjustment assembly 400.

[0070] Specifically, the carrier 100 includes a positioning surface 101, on which at least two positioning portions 110 are arranged separately along a first horizontal direction, and a limiting groove 1011 is located below the positioning portions 110 and disposed between two adjacent positioning portions 110. Each positioning portion 110 has an upward-facing positioning groove 111 for fixing the rotating shaft 20. The limiting groove 1011 is used for fixing the connecting rod 30. At least one set of two paired spring plungers 200 are respectively disposed within the limiting groove 1011, and the two spring plungers 200 are used to clamp and engage the connecting rod 30 within the limiting groove 1011. At least one contour block 300 is provided, disposed on the carrier 100, and all contour blocks 300 are located below the limiting groove 1011, with one contour block 300 vertically corresponding to the limiting groove 1011. The contour block 300 is used to conform to the surface of the moving contact 40. Figure 1 In the diagram, direction 'a' is the first horizontal direction, and direction 'c' is the vertical direction.

[0071] The rotating shaft 20, fixed in the positioning groove 111 and in contact with the positioning surface 101, the connecting rod 30, inserted into the limiting groove 1011 and held and engaged by the spring plunger 200, and the moving contact 40 abutting against the profile block 300, together form the first assembly position where the supply pin 10 passes through in the first horizontal direction. The contact between the positioning surface 101 and the rotating shaft 20 restricts the rotation of the rotating shaft 20.

[0072] Specifically, the angle adjustment assembly 400 is disposed below the carrier 100. The angle adjustment assembly 400 is used to push the contact 40 to rotate around the pin 10 in the second horizontal direction to a second assembly position suitable for engaging with the spring arm 51 of the torsion spring 50. Figure 1 In this context, direction b is the second horizontal direction.

[0073] In this embodiment, the rotating shaft 20 is fixed by the positioning surface 101 and positioning groove 111 of the carrier 100, the connecting rod 30 is fixed by the spring plunger 200 and the limiting groove 1011 of the carrier 100, and the moving contact 40 is fixed by the profile block 300, so that a first assembly position is formed between the rotating shaft 20, the connecting rod 30 and the moving contact 40, that is, the pin holes of the rotating shaft 20, the connecting rod 30 and the moving contact 40 are aligned to facilitate the insertion of the pin 10, which is convenient, reliable and effectively improves assembly efficiency. Moreover, because the pin 10 is horizontally inserted into the pin holes of the rotating shaft 20, the connecting rod 30 and the moving contact 40, the pin 10 is not easy to fall out without the preload of the torsion spring 50. After the pin 10 is inserted, the angle adjustment component 400 pushes the contact 40 to rotate around the pin 10 to the second assembly position along the second horizontal direction. Without manually adjusting the angle of the moving contact 40, the moving contact 40 can be made to engage with the spring arm 51 of the torsion spring 50. The torsion spring 50 can be directly inserted into the rotating shaft 20 to complete the assembly, simplifying the operation and further improving the assembly efficiency.

[0074] In this embodiment, reference is made to Figure 1 , Figure 2 and Figure 4 As shown, the angle adjustment assembly 400 includes a push block 410 located below the carrier 100 and capable of abutting against the movable contact 40, and a drive member 420 connected to the push block 410 and capable of moving along a second horizontal direction. The drive member 420 is disposed below the carrier 100. In this embodiment, the movable contact 40 is located below the rotating shaft 20. After the pin 10 passes through the rotating shaft 20, the connecting rod 30, and the movable contact 40, the movable contact 40 remains upright or slightly tilted due to gravity. When the drive member 420 drives the push block 410 to abut against the movable contact 40 along the second horizontal direction, the movable contact 40 rises upward with the pin 10 as the rotation center, which is stable and reliable. The push block 410 can abut against the end of the movable contact 40 away from the torsion spring 50 along the second horizontal direction.

[0075] For example, such as Figure 5As shown, a hook 42 is provided at one end of the moving contact 40 near the torsion spring 50. The angle adjustment component 400 drives the moving contact 40 to rise upwards around the pin 10 by an angle α, so that the inclined top surface of the hook 42 forms an angle β with the second horizontal direction. At this time, the inclined top surface of the hook 42 can guide the spring arm 51 of the torsion spring 50 to slide and engage with the hook 42 of the moving contact 40, which is stable and reliable and effectively prevents jamming. The size of the lifting angle α can be adaptively adjusted according to the shape of the moving contact 40 and the inclination of the inclined top surface of the hook 42 to ensure that the hook 42 can be stably engaged with the spring arm 51 of the torsion spring 50. In this embodiment, in order to ensure that the spring arm 51 of the torsion spring 50 slides smoothly relative to the inclined top surface of the hook 42 and is easy to engage with the hook 42, the part of the spring arm 51 that contacts the inclined top surface of the hook 42 can be set as a column extending along the first horizontal direction. Of course, the spring arm 51 of the torsion spring 50 can also be set in other shapes, which are not limited in this application.

[0076] For example, the lifting angle α can be 10°-20°. For example, the included angle β can be 10°-20°. However, the lifting angle α and the included angle β can also be other angles, which are not limited in this application.

[0077] For example, the drive element 420 can be a cylinder, such as a double-rod cylinder.

[0078] For example, the contact mechanism includes at least one moving contact 40. (As...) Figure 4 As shown, the contact mechanism includes multiple moving contacts 40 spaced apart along the first horizontal direction. The pusher block 410 can simultaneously push the multiple moving contacts 40 to rotate them to the second assembly position, effectively improving assembly efficiency.

[0079] For example, at least one torsion spring 50 is provided, each corresponding to one of the moving contacts 40; at least one pin 10 is provided, each corresponding to one of the moving contacts 40; and one connecting rod 30 is provided. When there are multiple moving contacts 40, the connecting rod 30 corresponds to one of the moving contacts 40, that is, one pin 10 horizontally passes through the pin hole of the connecting rod 30 and the corresponding moving contact 40, and the remaining pins 10 horizontally pass through the pin holes of the remaining moving contacts 40.

[0080] In this embodiment, reference is made to Figure 3 and Figure 6As shown, a mounting channel 1012 is provided on the positioning surface 101 or below the carrier 100 for the partial / complete insertion of the copying block 300. An elastic element 500 is provided within the mounting channel 1012 for the copying block 300 to extend and retract in a second horizontal direction. The first end of the elastic element 500 abuts against the bottom surface of the mounting channel 1012, and the second end abuts against the copying block 300. In this embodiment, the design of the elastic element 500 ensures that the moving contact 40 will not jam against the copying block 300 when rotating around the pin 10, and the copying block 300 adaptively extends and retracts relative to the mounting channel 1012, achieving fine-tuning of the position of the moving contact 40 and effectively ensuring that the pin 10 smoothly passes through the moving contact 40.

[0081] For example, the elastic element 500 can be a spring.

[0082] For example, the profile block 300 is designed to conform to the shape of the moving contact 40, and the profile block 300 is detachably connected to the carrier 100. Different sizes of profile blocks 300 can be replaced to accommodate different moving contacts 40. In one feasible embodiment, the moving contact 40 is provided with a slot 41, and the end of the profile block 300 located outside the mounting channel 1012 can be inserted into the slot 41 and fit against the inner wall of the slot 41 to form a limit, thereby positioning the moving contact 40.

[0083] For example, multiple contour blocks 300 are provided in a one-to-one correspondence with moving contacts 40. Specifically, multiple mounting channels 1012 are provided, and each mounting channel 1012 is provided with an elastic element 500 and a contour block 300 respectively.

[0084] For example, the carrier 100 includes a support block 121, at least one positioning strip 122 and at least one positioning strip 123. The support block has at least one through groove. Positioning strip 122 and positioning strip 123 are respectively located at both ends of the through groove and form an installation channel 1012 with the through groove. Specifically, positioning strip 122 seals the end of the through groove away from the profile block 300. The side of positioning strip 122 facing into the through groove is the bottom surface of the installation channel 1012. The first end of the elastic member 500 abuts against positioning strip 122. Positioning strip 123 protrudes from the through groove, and the portion of the profile block 300 located in the installation channel 1012 is provided with a stepped surface 310 corresponding to positioning strip 123. Positioning strip 123 can limit the stepped surface 310 in the second horizontal direction to prevent the profile block 300 from disengaging from the installation channel 1012. The bearing block 121 is provided with a positioning surface 101, and a through groove is formed on the positioning surface 101.

[0085] In this embodiment, reference is made to Figure 3 and Figure 4As shown, a shaft portion 22 is provided on the rotating shaft 20. The shaft portion 22 is stepped, which can be understood as having a shoulder. The positioning portion 110 extends outward from the positioning surface 101. A positioning groove 111 is provided above the positioning portion 110. The positioning groove 111 is designed according to the shape of the shaft portion 22, that is, the groove surface of the positioning groove 111 is concave to form a groove 1111 that can accommodate the shaft portion 22. In this embodiment, the groove surface of the positioning groove 111 fits against the periphery of the rotating shaft 20 to achieve radial positioning of the rotating shaft 20. The groove 1111 clamps the shaft portion 22 of the rotating shaft 20 along the two side walls below the horizontal direction, achieving axial positioning of the rotating shaft 20. In addition, the positioning surface 101 fits against the rotating shaft 20 to restrict the rotation of the rotating shaft 20, thereby fixing the rotating shaft 20. The structure is simple and convenient for placing and fixing the rotating shaft 20.

[0086] For example, the rotating shaft 20 is provided with a plurality of mounting portions 21 at intervals along the axial direction, each corresponding to a movable contact 40. Shaft portions 22 are provided between adjacent mounting portions 21 and / or on the outer side of the mounting portions 21 at both ends. For example, the rotating shaft 20 is provided with three mounting portions 21, and two shaft portions 22 and two positioning portions 110 are provided in correspondence.

[0087] In this embodiment, reference is made to Figure 3 , Figure 4 and Figure 7 As shown, a guide groove 24 is provided on the rotating shaft 20, and a guide pin 60 passes through the spring body 52 of the torsion spring 50, and the torsion spring 50 can be connected to the guide groove 24 through the guide pin 60. The torsion spring 50 and the guide pin 60 are arranged in a one-to-one correspondence.

[0088] Specifically, the mounting section 21 has positioning channels 23 that can accommodate the corresponding torsion spring 50 and part of the moving contact 40. One of the positioning channels 23 can also accommodate the connecting rod 30 and clamp the connecting rod 30 to limit the connecting rod 30 along the axis of the rotating shaft 20. The connecting rod 30 includes two parallel side rods 31. The two side rods 31 clamp the end of the moving contact 40 near the torsion spring 50, that is, limit the moving contact 40 along the axis of the rotating shaft 20. The remaining positioning channels 23 clamp the end of the moving contact 40 near the torsion spring 50 to limit the moving contact 40 along the axis of the rotating shaft 20. For example, if the rotating shaft 20 is provided with three mounting sections 21, the positioning channel 23 of the middle mounting section 21 can accommodate the connecting rod 30.

[0089] Exemplarily, the contour block 300 can also limit the connecting rod 30 along the axis of the rotating shaft 20. Specifically, the two side rods 31 of the connecting rod 30 can be clamped by the contour block. In this embodiment, the contour block 300 corresponding to the connecting rod 30 can protrude from the other contour blocks 300 so that it can limit the two side rods 31 of the connecting rod 30. Specifically, as Figure 6 As shown, a protrusion 320 is provided on the contour block 300 corresponding to the connecting rod 30. The two side rods 31 can clamp the protrusion 320, and the protrusion 320 can also fit against the surface of the moving contact 40 to form a limit. Of course, other contour blocks 300 can also be provided with protrusions 320, and this application does not make specific limitations.

[0090] In this embodiment, reference is made to Figure 3 As shown, the limiting groove 1011 is formed by the recess of the carrier 100, and at least one plunger groove is provided on each of its two sides along the first horizontal direction. Spring plungers 200 are inserted into the plunger grooves one by one and can extend and retract along the first horizontal direction to reset. Both side rods 31 of the connecting rod 30 are provided with through holes 32. In this embodiment, when the connecting rod 30 is inserted into the limiting groove 1011, the two side rods 31 of the connecting rod 30 can respectively push against the corresponding side spring plungers 200, causing the spring plungers 200 to extend and retract into the plunger grooves. When the spring plungers 200 and the corresponding through holes 32 are opposite each other along the first horizontal direction, the spring plungers 200 reset and engage with the through holes 32. That is, the spring plungers 200 engage with the corresponding through holes 32 and clamp the two side rods 31, facilitating the fixation of the connecting rod 30 and effectively ensuring the positional accuracy of the connecting rod 30.

[0091] In this embodiment, reference is made to Figure 4 As shown, a guide groove 24 is provided in the positioning channel 23. The guide pin 60 is inserted into the spring body 52 of the corresponding torsion spring 50 and placed in the guide groove 24 of the rotating shaft 20. The guide groove 24 guides the guide pin 60 and pushes it against the guide pin 60 so that the guide pin 60 slides toward the moving contact 40 in the guide groove 24, thereby driving the torsion spring 50 to move toward the moving contact 40 until the spring arm 51 of the torsion spring 50 engages with the hook 42 of the moving contact 40 in the second assembly position.

[0092] In this embodiment, reference is made to Figure 1 , Figures 8 to 10 As shown, the circuit breaker contact mechanism assembly device also includes a clamping mechanism 600 located above the carrier 100. The clamping mechanism 600 is used to push the guide pin 60 located in the guide groove 24, so that the torsion spring 50 moves to the third assembly position. The spring arm 51 of the torsion spring 50 located in the third assembly position is adapted to engage with the moving contact 40. In this embodiment, the design of the clamping mechanism 600, in conjunction with the angle adjustment component 400, facilitates the engagement of the torsion spring 50 with the moving contact 40, effectively ensuring assembly quality and maintaining assembly consistency.

[0093] Specifically, the clamping mechanism 600 includes a ejector pin 610 and a second driving member 620 connected to the ejector pin 610. The second driving member 620 drives the ejector pin 610 to move vertically against the guide pin 60 toward the third assembly position. In this embodiment, after the moving contact 40 rotates around the pin shaft 10 to the second assembly position suitable for engaging 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 groove 24 of the rotating shaft 20. The second driving member 620 is then controlled to drive the ejector pin 610 to push against the guide pin 60, thereby moving the torsion spring 50 within the guide groove 24 to engage with the moving contact 40, which is convenient to operate. At least one ejector pin 610 is provided.

[0094] Specifically, the clamping mechanism 600 also includes a needle seat 630, the upper part of which is connected to the drive component 620, and the lower part of the needle seat 630 is provided with a T-shaped needle groove 6321 extending along the first horizontal direction; the ejector pin 610 is T-shaped, including a square end 611 and a cylindrical rod 612. The square end 611 is slidably disposed in the T-shaped needle groove 6321, which facilitates the adjustment of the position of the ejector pin 610 along the first horizontal direction, so that the ejector pin 610 is suitable for contacting and pushing the guide pin 60, avoiding interference between the ejector pin 610 and the spring body 52 of the torsion spring 50, and ensuring assembly yield.

[0095] Specifically, the clamping mechanism 600 also includes a screw connector (not shown), which passes through and is fastened to the needle seat 630, and can press the square end 611 of the ejector pin 610 into the T-shaped needle groove 6321 to fix the ejector pin 610 relative to the needle seat 630. The ejector pin 610 extends vertically, and the screw connector passes through and fastens the needle seat 630 horizontally to compress and fix the ejector pin 610. In this embodiment, the side of the square end 611 of the ejector pin 610 is pressed by the screw connector, resulting in a large contact area between the ejector pin 610 and the screw connector, effectively ensuring the stability of the ejector pin 610 fixed relative to the needle seat 630.

[0096] For example, the needle holder 630 is T-shaped and includes a base 631 and a vertical protrusion 632. A T-shaped needle groove 6321 is formed on the vertical protrusion 632, and the base 631 is connected to the drive member 620.

[0097] For example, when multiple torsion springs 50 and guide pins 60 are provided in a one-to-one correspondence, multiple ejector pins 610 are provided, and each ejector pin 610 pushes against the guide pin 60 to simultaneously complete the assembly of multiple sets of torsion springs 50 and moving contacts 40, effectively improving assembly efficiency. Specifically, multiple ejector pins 610 are all provided in T-shaped pin grooves 6321, which facilitates the installation of ejector pins 610. By loosening the screw connection, the ejector pins 610 can slide in the T-shaped pin grooves 6321 to fine-tune their horizontal position, so as to ensure that the ejector pins 610 can smoothly push against the guide pins 60.

[0098] For example, the end of the cylindrical rod 612 of the ejector pin 610 is chamfered or rounded, and the cross-section is waist-shaped, so that the second end of the ejector pin 610 is suitable for pushing against the guide pin 60, avoiding interference between the ejector pin 610 and the spring body 52 of the torsion spring 50. In this embodiment, the side of the square end 611 of the ejector pin 610 is pressed by a screw connector to prevent the cylindrical rod 612 from rotating, ensuring that the chamfer or rounded corner of the cylindrical rod 612 effectively accommodates the spring body 52 of the torsion spring 50.

[0099] For example, the second drive unit 620 can be a cylinder, such as a double-rod cylinder.

[0100] In this embodiment, reference is made to Figure 1 and Figure 2 As shown, the circuit breaker contact mechanism assembly device also includes a base 710 and a fixing component 720, with the carrier 100 fixed above the base 710 by the fixing component 720.

[0101] Specifically, the fixing assembly 720 includes a support column 721, a clamping block 722, and fasteners 723. At least two support columns 721 are provided and extend vertically, fixed to the base 710. At least two clamping blocks 722 are provided and symmetrically arranged on the support columns 721, each including a pair of clamping arms 7221. Each clamping arm 7221 has a guide channel 7222 through which the support column 721 can slide. The clamping blocks 722 are fixedly mounted on the carrier 100. At least two fasteners 723 are provided on the clamping blocks 722, symmetrically arranged. Each fastener 723 passes through one of the clamping arms 7221 of the corresponding clamping block 722 and fastens to the other, forcing the two clamping arms 7221 to clamp the support column 721. This achieves a fixed position of the carrier 100 relative to the base 710, facilitating assembly and disassembly, and allowing adjustment of the vertical position of the carrier 100. Furthermore, the arrangement of the two support pillars 721 ensures the stability of the vehicle 100 relative to the base 710. Of course, other numbers of support pillars 721 can also be used, and this application does not impose any specific limitations.

[0102] In this embodiment, reference is made to Figure 1 , Figure 8 and Figure 9 As shown, the clamping mechanism 600 can also be fixed to the support column 721 by the clamping block 722 and the fastener 723, which realizes the position fixation of the clamping mechanism 600 relative to the base 710 and facilitates disassembly and assembly.

[0103] Specifically, the clamping mechanism 600 also includes a clamping seat 640, on which at least two clamping blocks 722 may be provided, and the clamping blocks 722 connected to the clamping seat 640 are symmetrically arranged on the support column 721.

[0104] In this embodiment, reference is made to Figure 11As shown, the circuit breaker contact mechanism assembly device also includes a control system. The control system includes a controller 810 and operation buttons 820 electrically connected to the controller 810. The controller 810 is electrically connected to drive component 420 and drive component 620. The controller 810 receives control signals from the operation buttons 820 to control the operation of drive component 420 and drive component 620, facilitating operation. In this embodiment, the programming of the controller 810 can be modified to adapt to the assembly rhythm of the assembly personnel, improving assembly efficiency. After the torsion spring 50 is assembled, drive component 420 and drive component 620 can automatically reset to facilitate the removal of the rotating shaft 20 and wait for the assembly of the next rotating shaft 20. The controller 810 may include, but is not limited to, a microcontroller.

[0105] For example, the controller 810 controls the opening and closing of the solenoid valve to control the drive unit 420 and the drive unit 620. The connection method between the drive unit 420 and the solenoid valve is prior art and will not be described in detail in this application.

[0106] The system includes two operation buttons 820. When both buttons 820 are pressed, the controller 810 controls the first drive component 420 and the second drive component 620 to operate sequentially to complete the assembly of the torsion spring 50. This can be understood as the assembler pressing one operation button 820 with each hand, ensuring their hands are in a safe position for improved safety. In this embodiment, after the pin 10 passes through the rotating shaft 20, connecting rod 30, and moving contact 40 along the first horizontal direction, the guide pin 60 is inserted into the spring body 52 of the corresponding torsion spring 50 and placed in the guide groove 24. Then, the two operation buttons are pressed with both hands. The controller 810 first controls the first drive component 420 to rotate the moving contact 40 to the second assembly position. Then, the controller 810 controls the second drive component 620 to push the torsion spring 50 into engagement with the moving contact 40.

[0107] Specifically, the control system also includes a switching power supply 830, which supplies power to the controller 810.

[0108] Specifically, a housing 730 is provided on the base 710, and a cavity is formed between the base 710 and the housing 730 to accommodate the controller 810 and the switching power supply 830. The control buttons are fixed on the housing 730.

[0109] It is understandable that for connection methods not explicitly mentioned in the text, common connection methods such as threaded connection, welding or bonding can be used as needed.

[0110] Example 2

[0111] The assembly method applicable to the circuit breaker contact mechanism assembly device in Embodiment 1 is referred to... Figure 12 As shown, the assembly method includes the following steps:

[0112] S100, The rotating shaft 20 is installed in the positioning groove 111 and fits against the positioning surface 101. The connecting rod 30 passes through the limiting groove 1011 and is engaged with the spring plunger 200. The moving contact 40 abuts against the molded block 300 to form the first assembly position.

[0113] In this embodiment, the rotating shaft 20 can be placed first, followed by the connecting rod 30, and finally the moving contact 40. Alternatively, the connecting rod 30 can be placed first, followed by the rotating shaft 20, and finally the moving contact 40.

[0114] S200, the pin 10 is threaded through the rotating shaft 20, the connecting rod 30 and the moving contact 40.

[0115] In this embodiment, when the rotating shaft 20 is assembled with a plurality of moving contacts 40, the following steps are further included before step S100 or after step S200:

[0116] S210, the remaining moving contacts 40 are pressed against the corresponding molded blocks 300 in sequence and the pins 10 are inserted through them.

[0117] S300, Install the torsion spring 50 onto the rotating shaft 20.

[0118] Specifically, the guide pin 60 is inserted through the spring body 52 of the torsion spring 50 and placed in the guide groove 24 of the rotating shaft 20 S400. The control angle adjustment assembly 400 drives the moving contact 40 to rotate to the second assembly position suitable for engaging with the spring arm 51 of the torsion spring 50, and the torsion spring 50 engages with the moving contact 40.

[0119] The specific steps of step S400 are as follows:

[0120] S410, the control angle adjustment component 400 drives the moving contact 40 to rise upward by an angle α with the pin 10 as the rotation center, so that the angle β between the inclined top surface of the hook 42 and the second horizontal direction is achieved.

[0121] S420, the control clamping mechanism 600 pushes the guide pin 60 until the spring arm 51 of the torsion spring 50 engages with the moving contact 40.

[0122] In step S400, the actions of the control angle adjustment component 400 and the clamping mechanism 600 are completed by pressing the control button. The controller 810 will receive the control signal from the control button to control the drive component 1 420 and drive component 2 620 to complete the actions in sequence.

[0123] For details on the assembly process in the above steps, please refer to the aforementioned introduction, which will not be repeated here.

[0124] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A circuit breaker contact mechanism assembly device for assembling 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 to pass through the rotating shaft (20), the connecting rod (30), and the moving contact (40), and the moving contact (40) is rotatable around the pin (10), characterized in that, The circuit breaker contact mechanism assembly includes: The carrier (100) includes a positioning surface (101), on which at least two positioning parts (110) are arranged separately along a first horizontal direction, and a limiting groove (1011) is located below the positioning parts (110) and disposed between two adjacent positioning parts (110). The positioning parts (110) are provided with a positioning groove (111) with an upward opening for fixing the rotating shaft (20), and the limiting groove (1011) is used for fixing the connecting rod (30). Spring plunger (200), at least one set of two spring plungers (200) are respectively provided in the limiting groove (1011) and are arranged in pairs. The two spring plungers (200) are used to clamp and engage the connecting rod (30) in the limiting groove (1011). At least one copying block (300) is provided, and the copying block (300) is disposed on the carrier (100). All the copying blocks (300) are located below the limiting groove (1011), and one of the copying blocks (300) is vertically aligned with the limiting groove (1011). The copying block (300) is used to conform to the surface of the moving contact (40). The rotating shaft (20) fixed in the positioning groove (111) and in contact with 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 against the profile block (300) form a first assembly position for the pin shaft (10) to pass through in the first horizontal direction; An angle adjustment assembly (400) is disposed below the carrier (100). The angle adjustment assembly (400) is used to push the moving contact (40) in a second horizontal direction to rotate about the pin (10) to a second assembly position suitable for engaging with the spring arm (51) of the torsion spring (50).

2. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that, An installation channel (1012) is provided on the positioning surface (101) or below the carrier (100) for the partial / complete insertion of the modeling block (300). An elastic element (500) is provided in the installation channel (1012) for the modeling block (300) to extend and retract in the second horizontal direction. The first end of the elastic element (500) abuts against the bottom surface of the installation channel (1012), and the second end of the elastic element (500) abuts against the modeling block (300).

3. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that, The limiting groove (1011) is formed by the recess of the carrier (100), and at least one plunger groove is provided on each of its two sides along the first horizontal direction. The spring plunger (200) is inserted into the plunger groove in a corresponding manner and can be extended and retracted along the first horizontal direction to reset.

4. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that, The rotating shaft (20) is provided with a shaft portion (22), which is stepped. The positioning portion (110) extends outward from the positioning surface (101). The positioning groove (111) is provided above the positioning portion (110). The groove surface of the positioning groove (111) is recessed to form a groove (1111) that can accommodate the shaft portion (22).

5. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that, The angle adjustment assembly (400) includes a push block (410) located below the carrier (100) and capable of abutting against the movable contact (40), and a drive member (420) connected to the push block (410) and capable of moving along a second horizontal direction. The drive member (420) is located below the carrier (100). When the drive member (420) drives the push block (410) to abut against the movable contact (40) along the second horizontal direction, the movable contact (40) is lifted upward with the pin (10) as the rotation center.

6. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that, The moving contact (40) is provided with a hook (42) at one end near the torsion spring (50). The angle adjustment component (400) drives the moving contact (40) to rise upward about the pin (10) by an angle α, so that the inclined top surface of the hook (42) forms an angle β with the second horizontal direction. The angle α / β is 10°-20°.

7. The circuit breaker contact mechanism assembly device according to any one of claims 1-6, characterized in that, The rotating shaft (20) is provided with a guide groove (24), and 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 groove (24) through the guide pin (60); The circuit breaker contact mechanism assembly device further includes a clamping mechanism (600) located above the carrier (100). The clamping mechanism (600) is used to push the guide pin (60) located in the guide groove (24) to move the torsion spring (50) to the third assembly position. The spring arm (51) of the torsion spring (50) located in the third assembly position is adapted to engage with the moving contact (40).

8. The circuit breaker contact mechanism assembly device according to claim 7, characterized in that, The clamping mechanism (600) includes a push pin (610) and a second drive member (620) connected to the push pin (610). The second drive member (620) is used to drive the push pin (610) to push the guide pin (60) in the vertical direction and move towards the third assembly position.

9. The circuit breaker contact mechanism assembly device according to claim 8, characterized in that, The clamping mechanism (600) also includes a needle seat (630), the upper part of which is connected to the second driving member (620). A T-shaped needle groove (6321) extending along the first horizontal direction is provided below the needle seat (630). The ejector pin (610) is T-shaped, including a square end (611) and a cylindrical rod (612). The square end (611) is slidably disposed in the T-shaped needle groove (6321).

10. The circuit breaker contact mechanism assembly device according to any one of claims 1-6, characterized in that, It also includes a base (710) and a fixing assembly (720), the carrier (100) being fixed above the base (710) by the fixing assembly (720), the fixing assembly (720) comprising: At least two support columns (721) extending vertically are fixed to the base (710); At least two clamping blocks (722) are symmetrically arranged on the support column (721), each including a pair of clamping arms (7221), the clamping arms (7221) having guide channels (7222) that can slide through the support column (721), and the clamping blocks (722) are fixedly arranged on the carrier (100). Fasteners (723), at least two and symmetrically arranged on the clamping block (722), pass through one of the clamping arms (7221) of the corresponding clamping block (722) and are fastened to the other to force the two clamping arms (7221) to clamp the support (721).

11. An assembly method, applied to the circuit breaker contact mechanism assembly device according to any one of claims 1-10, characterized in that, Includes the following steps: S100, The rotating shaft (20) is installed in the positioning groove (111) and fits against the positioning surface (101), the connecting rod (30) passes through the limiting groove (1011) and is engaged with the spring plunger (200), and the moving contact (40) abuts against the molding block (300) to form the first assembly position. S200, pass the pin (10) through the rotating shaft (20), the connecting rod (30) and the moving contact (40); S300, Install the torsion spring (50) onto the rotating shaft (20); S400, the control angle adjustment assembly (400) drives the moving contact (40) to rotate to a second assembly position suitable for engaging with the spring arm (51) of the torsion spring (50), and engages the torsion spring (50) with the moving contact (40).

12. The assembly method according to claim 11, characterized in that, Step S300 specifically includes the following steps: The guide pin (60) is inserted into the spring body (52) of the torsion spring (50) and placed in the guide groove (24) of the rotating shaft (20); and The specific steps of step S400 are as follows: The control angle adjustment component (400) drives the moving contact (40) to rise upward by an angle α with the pin (10) as the rotation center, so that the angle β between the inclined top surface of the hook (42) and the second horizontal direction is β; The control clamping mechanism (600) pushes against the guide pin (60) until the spring arm (51) of the torsion spring (50) engages with the moving contact (40).

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