Auxiliary switch connecting structure for two-pole circuit breaker

Abstract

The invention relates to an auxiliary switch connection structure for a two-pole circuit breaker, the two-pole circuit breaker comprises a rear cover and an operating mechanism arranged at the front end of the rear cover, and the operating mechanism comprises a main shaft rotatably penetrating through the operating mechanism and a cover plate arranged at the upper end of the operating mechanism; the auxiliary switch connecting structure for the two-pole circuit breaker comprises a fixing mechanism which is of a hollow structure and is fixed at the upper end of the cover plate; the auxiliary switch is fixed in the fixing mechanism and is elastically connected with a trigger end; the cantilever is fixedly arranged on the main shaft in a sleeving manner; the striking piece is rotatably arranged in the fixing mechanism, and the second end of the striking piece penetrates through the cover plate; wherein the main shaft drives the cantilever to rotate to a first state, the first end of the cantilever abuts against the second end of the striking piece and pushes the cantilever to rotate to a first position, and the first end of the striking piece extrudes the trigger end, so that closing of the auxiliary switch is realized.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to an auxiliary switch connection structure for a two-pole circuit breaker. Background Art

[0002] The two-pole circuit breaker comprises a rear cover and an operating mechanism arranged at the front end of the rear cover. The operating mechanism comprises a main shaft rotatably passing through the operating mechanism and a cover plate arranged at the upper end of the operating mechanism.

[0003] The two-pole circuit breaker also includes an auxiliary switch. The main shaft rotates to make the cantilever on the main shaft hit the transmission structure, and the transmission structure hits the micro switch on the auxiliary switch. The opening and closing of the auxiliary switch indicates the opening and closing status of the circuit breaker. The auxiliary switch is usually installed at the front end of the rear cover, and it is necessary to embed the insert nut in the rear cover. In addition, the space at the lower end of the auxiliary switch is small, and it is difficult to accommodate the transmission structure, cantilever and main shaft positioning structure at the same time. The design, production and installation are difficult and costly. Therefore, it is necessary to design an auxiliary switch connection structure for two-pole circuit breakers suitable for two-pole circuit breakers.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the deficiencies in the prior art, an embodiment of the present invention discloses an auxiliary switch connection structure for a two-pole circuit breaker.

[0006] The technical solution adopted by the present invention is as follows:

[0007] An auxiliary switch connection structure for a two-pole circuit breaker is used for a two-pole circuit breaker, the two-pole circuit breaker comprising a rear cover and an operating mechanism arranged at the front end of the rear cover, the operating mechanism comprising a main shaft rotatably passing through the operating mechanism and a cover plate arranged at the upper end of the operating mechanism; the auxiliary switch connection structure for a two-pole circuit breaker comprises: a fixing mechanism, which is a hollow structure and is fixed to the upper end of the cover plate; an auxiliary switch, which is fixed in the fixing mechanism and elastically connected with a trigger end; a cantilever, which is sleeved and fixed on the main shaft; a striking piece, which is rotatably arranged in the fixing mechanism and has a second end passing through the cover plate; wherein the main shaft drives the cantilever to rotate to a first state, the first end of the cantilever abuts against the second end of the striking piece and pushes the cantilever to rotate to a first position, and the first end of the striking piece squeezes the trigger end to achieve the closing of the auxiliary switch.

[0008] A further technical solution is that the cantilever comprises: a connecting portion, which is sleeved and fixed on the main shaft; a first portion, which is connected to the upper end of the connecting portion; and a second portion, which is connected to the lower end of the connecting portion.

[0009] Its further technical solution is that the cover plate includes: a first groove body, which is opened on the cover plate; the striking member includes: a first arm portion, which is rotatably connected in the fixing mechanism and whose position corresponds to the trigger end; a second arm portion, which is arranged at the lower end of the first arm portion, whose position corresponds to the first portion and passes through the first groove body.

[0010] A further technical solution is that the first arm portion includes: a first shaft body, which is arranged at the lower ends of both sides of the first arm portion and passes through both sides of the fixing mechanism respectively.

[0011] A further technical solution is that the fixing mechanism includes: a second groove body, which is opened on both sides of the fixing mechanism and is arc-shaped, with the center of the circle located on the axis of the first shaft body; the first arm portion includes: a second shaft body, which is arranged on both sides of the first arm portion and passes through the second groove body.

[0012] A further technical solution is that the fixing mechanism includes: two side panels, one of which is buckled with the side surface of the cover plate, and the other is screwed to the cover plate; wherein the auxiliary switch is fixedly connected between the two side panels, the trigger end is arranged at the rear end of the auxiliary switch, and the first arm portion is arc-shaped.

[0013] A further technical solution is that the fixing mechanism includes: a cover body, which is a hollow structure with an opening at the lower end, and is connected to the cover screw; wherein the auxiliary switch is fixedly connected to the cover body, and the trigger end is arranged at the lower end of the auxiliary switch.

[0014] A further technical solution is that the connecting portion, the first portion and the second portion are integrally formed.

[0015] A further technical solution is that the side of the first arm portion has a column, and the column is coaxially arranged with the first shaft; the striking member also includes: a torsion spring, which is sleeved on the column, with a first end connected to the fixing mechanism and a second end connected to the second arm portion.

[0016] A further technical solution is that there are a plurality of auxiliary switches, and insulating plates are arranged on both sides of each auxiliary switch, and the insulating plates are fixed in the fixing mechanism.

[0017] The beneficial effects of the embodiments of the present invention are as follows:

[0018] (1) The auxiliary switch connection structure for a two-pole circuit breaker of the present invention includes a fixing mechanism, an auxiliary switch, a cantilever and a striking piece. When the two-pole circuit breaker is opened, the main shaft drives the cantilever to rotate to a first state, the first end of the cantilever abuts against the second end of the striking piece and pushes the cantilever to rotate to the first position, and the first end of the striking piece squeezes the trigger end to achieve the closing of the auxiliary switch. When the two-pole circuit breaker is closed, the main shaft drives the cantilever to rotate to a second state, the first end of the cantilever disengages from the second end of the striking piece, the trigger end of the auxiliary switch loses pressure and resets, and at the same time the striking piece disengages from the trigger end of the auxiliary switch and resets to the second position to achieve the opening of the auxiliary switch. The auxiliary switch connection structure for a two-pole circuit breaker of the present invention is simple and reliable, easy to install, and will not interfere with the main shaft positioning structure, and has high space utilization.

[0019] (ii) Further, the side of the first arm has a column, which is coaxially arranged with the first shaft. The striking member also includes a torsion spring, which is sleeved on the column, with a first end connected to the fixing mechanism and a second end connected to the second arm, and the torsion spring ensures that the striking member can be separated from the trigger end and reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axonometric view of a two-pole circuit breaker of the present invention.

[0021] Figure 2 The invention is an axonometric view of a fixing mechanism in a connection structure of an auxiliary switch for a two-pole circuit breaker of the present invention, which is a side plate.

[0022] Figure 3 It is an axonometric view of the fixing mechanism in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention as a cover.

[0023] Figure 4 The utility model is an axonometric diagram of an auxiliary switch and a striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention.

[0024] Figure 5 It is a structural schematic diagram of a striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention.

[0025] Figure 6 The isometric view of the striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention.

[0026] Figure 7 The isometric view of the striking member and the torsion spring in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention.

[0027] In the figure:

[0028] 1. Back cover; 2. Operating mechanism; 21. Cover plate; 211. First slot body; 22. Main shaft; 3. Fixing mechanism; 31. Side plate; 32. Cover body; 33. Second slot body; 4. Cantilever; 41. First part; 42. Connecting part; 43. Second part; 5. Striking member; 51. First arm part; 511. First shaft body; 512. Second shaft body; 513. Pillar; 52. Second arm part; 6. Auxiliary switch; 61. Trigger end; 7. Insulating plate; 8. Torsion spring. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0031] Example:

[0032] This embodiment discloses an auxiliary switch connection structure for a two-pole circuit breaker.

[0033] Figure 1 FIG. 1 is an isometric view of the circuit breaker of the present invention. Figure 1 As shown, the auxiliary switch connection structure for a two-pole circuit breaker is used for a two-pole circuit breaker. The two-pole circuit breaker includes a rear cover 1 and an operating mechanism 2 arranged at the front end of the rear cover 1. The operating mechanism 2 includes a main shaft 22 rotatably passing through the operating mechanism 2 and a cover plate 21 arranged at the upper end of the operating mechanism 2.

[0034] Figure 2 This is an isometric view of the fixing mechanism in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention as a side plate. Figure 1 and Figure 2 As shown, the auxiliary switch connection structure for a two-pole circuit breaker includes a fixing mechanism 3, an auxiliary switch 6, a cantilever 4 and a striking member 5.

[0035] like Figure 2As shown, the fixing mechanism 3 is a hollow structure, fixed to the upper end of the cover plate 21. Exemplarily, the fixing mechanism 3 includes a side plate 31, which has two pieces and is arranged perpendicular to the cover plate 21, wherein one side plate 31 is buckled with the side of the cover plate 21, and the other side plate 31 is screwed to the cover plate 21. In this type of fixing mechanism 3, the auxiliary switch 6 is limitedly connected between the two side plates 31 by two screws, the trigger end 61 is arranged at the rear end of the auxiliary switch 6, and the first arm portion 51 is arc-shaped and can extend to the rear end of the auxiliary switch 6 to squeeze the trigger end 61. Figure 3 This is an isometric view of the cover body as the fixing mechanism in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention. Figure 3 The fixing mechanism 3 shown may also be a cover body 32 . The cover body 32 is a hollow structure with an opening at the lower end, and is screwed to the cover plate 21 . Figure 4 This is an isometric view of the auxiliary switch and the striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention. Figure 4 As shown, in this type of fixing mechanism 3 , the auxiliary switch 6 is limitedly connected in the cover body 32 by two screws, and the trigger end 61 is arranged at the lower end of the auxiliary switch 6 .

[0036] like Figure 2 As shown, the auxiliary switch 6 is fixed in the fixing mechanism 3 and elastically connected with a trigger end 61. Exemplarily, there are several auxiliary switches 6, which are arranged in parallel in the fixing mechanism 3, and insulating plates 7 are arranged on both sides of each auxiliary switch 6, and the insulating plates 7 are fixed in the fixing mechanism 3. Specifically, the auxiliary switch is a commercially available micro switch. The insulating plate 7 is a red steel cardboard with excellent mechanical strength, heat resistance, wear resistance and insulation performance. If the fixing mechanism 3 is two side plates 31, the insulating plate 7 and the auxiliary switch 6 are fixed between the two side plates 31 by two screws. If the fixing mechanism 3 is a cover body 32, the insulating plate 7 is integrally arranged at the top of the cover body 32.

[0037] like Figure 1 As shown, the cantilever 4 is sleeved and fixed on the main shaft 22. Exemplarily, the cantilever 4 includes a connecting portion 42, a first portion 41 and a second portion 43. The connecting portion 42 is sleeved and fixed on the main shaft 22, the first portion 41 is connected to the upper end of the connecting portion 42, the upper end of the first portion 41 is an arc surface, and the second portion 43 is connected to the lower end of the connecting portion 42. The connecting portion 42, the first portion 41 and the second portion 43 are integrally formed.

[0038] like Figure 1 and Figure 2As shown, the striking member 5 is rotatably arranged in the fixing mechanism 3, and the second end passes through the cover plate 21. Exemplarily, the cover plate 21 includes a first slot 211, and the first slot 211 is opened on the cover plate 21. The striking member 5 includes a first arm 51 and a second arm 52. The first arm 51 is rotatably connected in the fixing mechanism 3, and its position corresponds to the trigger end 61. The second arm 52 is arranged at the lower end of the first arm 51, and its position corresponds to the first part 41, and passes through the first slot 211. Specifically, the first arm 51 is horizontally arranged in the fixing mechanism 3, and the contact part between the first arm 51 and the first part 41 has an arc surface, so that the rotation is more stable and the wear during striking is reduced. The first arm 51 includes a first shaft 511, and the first shaft 511 is arranged at the lower ends of both sides of the first arm 51, and passes through both sides of the fixing mechanism 3 respectively. The width of the first arm 51 corresponds to the number of auxiliary switches 6, ensuring that the trigger ends 61 of all auxiliary switches 6 can be squeezed.

[0039] Figure 5 It is a structural schematic diagram of a striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention.

[0040] like Figure 2 and Figure 5 As shown, further, the fixing mechanism 3 includes a second slot 34, which is opened on both sides of the fixing mechanism 3 and is arc-shaped, with the center of the circle located on the axis of the first shaft 511. The first arm 51 includes a second shaft 512, which is arranged on both sides of the first arm 51 and passes through the second slot 34. When the first arm 51 rotates, it drives the second shaft 512 to slide in the second slot 34, and the second slot 34 limits the rotation angle of the first arm 51 to prevent the striking member 5 and the cantilever 4 from rotating excessively.

[0041] Figure 6 The isometric view of the striking member in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention. Figure 7 This is an isometric view of the striking member and the torsion spring in the auxiliary switch connection structure for a two-pole circuit breaker of the present invention. Figure 6 and Figure 7 As shown, further, the side of the first arm 51 has a column 513, and the column 513 is coaxially arranged with the first shaft 511. The striking member 5 also includes a torsion spring 8, which is sleeved on the column 513, with a first end connected to the fixing mechanism 3 and a second end connected to the second arm 52. The torsion spring 8 ensures that the striking member 5 can be separated from the trigger end 61 in time and reset.

[0042] In this embodiment, when the two-pole circuit breaker is opened, the operating mechanism 2 drives the main shaft 22 to rotate, and the main shaft 22 drives the cantilever 4 to rotate to the first state, and the first end of the cantilever 4 abuts against the second end of the striking member 5 and pushes the cantilever 4 to rotate to the first position, and the first end of the striking member 5 squeezes the trigger end 61 to achieve the closing of the auxiliary switch 6. When the two-pole circuit breaker is closed, the operating mechanism 2 drives the main shaft 22 to rotate, and the main shaft 22 drives the cantilever 4 to rotate to the second state, and the first end of the cantilever 4 is separated from the second end of the striking member 5, and the trigger end 61 of the auxiliary switch 6 loses pressure and resets, and at the same time, the striking member 5 is separated from the trigger end 61 of the auxiliary switch 6 and resets to the second position to achieve the opening of the auxiliary switch 6. The auxiliary switch connection structure for the two-pole circuit breaker of this embodiment is simple and reliable, easy to install, and will not interfere with the positioning structure of the main shaft 22, and has high space utilization.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Auxiliary switch connection structure for two-pole circuit breaker, characterized in that: Used for a two-pole circuit breaker, the two-pole circuit breaker comprises a rear cover and an operating mechanism arranged at the front end of the rear cover, the operating mechanism comprises a main shaft rotatably passing through the operating mechanism and a cover plate arranged at the upper end of the operating mechanism; The auxiliary switch connection structure for a two-pole circuit breaker comprises: The fixing mechanism is a hollow structure and is fixed to the upper end of the cover plate; An auxiliary switch, fixed in the fixing mechanism and elastically connected with a trigger end; A cantilever, sleeved and fixed on the main shaft; A striking member, rotatably disposed in the fixing mechanism, with a second end passing through the cover plate; Among them, the main shaft drives the cantilever to rotate to the first state, the first end of the cantilever abuts against the second end of the striking member and pushes the cantilever to rotate to the first position, and the first end of the striking member squeezes the trigger end to achieve the closing of the auxiliary switch.

2. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 1, characterized in that: The cantilever comprises: A connecting portion, sleeved and fixed on the main shaft; A first part connected to the upper end of the connecting part; The second part is connected to the lower end of the connecting part.

3. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 2, characterized in that: The cover plate comprises: A first tank body is provided on the cover plate; The striking member comprises: A first arm portion, rotatably connected to the fixing mechanism, and located corresponding to the trigger end; The second arm portion is arranged at the lower end of the first arm portion, has a position corresponding to the first portion, and passes through the first slot body.

4. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 3, characterized in that: The first arm comprises: The first shaft body is arranged at the lower ends of both sides of the first arm part and passes through both sides of the fixing mechanism respectively.

5. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 4, characterized in that: The fixing mechanism comprises: The second groove body is provided on both sides of the fixing mechanism and is arc-shaped, with the center of the circle located on the axis of the first shaft body; The first arm comprises: The second shaft body is arranged on both sides of the first arm portion and passes through the second slot body.

6. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 3, characterized in that: The fixing mechanism comprises: The side panels have two parts, one of which is buckled with the side surface of the cover plate, and the other is screwed with the cover plate; Wherein, the auxiliary switch is fixedly connected between the two side plates, the trigger end is arranged at the rear end of the auxiliary switch, and the first arm portion is arc-shaped.

7. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 1, characterized in that: The fixing mechanism comprises: The cover body is a hollow structure with an opening at the lower end, and is connected to the cover plate with screws; Wherein, the auxiliary switch is fixedly connected in the cover body, and the trigger end is arranged at the lower end of the auxiliary switch.

8. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 2, characterized in that: The connecting portion, the first portion and the second portion are integrally formed.

9. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 4, characterized in that: The first arm portion has a column on its side, and the column is coaxially arranged with the first shaft; the striking member further comprises: The torsion spring is sleeved on the platform column, with a first end connected to the fixing mechanism and a second end connected to the second arm portion.

10. The auxiliary switch connection structure for a two-pole circuit breaker according to claim 1, characterized in that: There are a plurality of auxiliary switches, and insulating plates are arranged on both sides of each auxiliary switch, and the insulating plates are fixed in the fixing mechanism.

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