Miniature circuit breaker convenient for combined use

Abstract

The invention discloses a miniature circuit breaker convenient for combined use, which comprises a circuit breaker body and an operating handle, a plurality of matched guide grooves and guide blocks are arranged on the front side and the rear side of the circuit breaker body respectively, first clamping heads are arranged on the inner side walls of the guide grooves, first clamping grooves are formed in the outer side walls of the guide blocks, and the first clamping heads are clamped in the first clamping grooves. The first clamping head is matched with the first clamping groove to prevent the guide block from horizontally separating from the guide groove, the operation handle is provided with a transversely-through handle groove, a matching mechanism capable of horizontally moving is arranged in the handle groove, and in the matching process of the two circuit breaker bodies, after the guide block completely enters the guide groove, the matching mechanism can move horizontally. And the matching mechanism in one handle groove is inserted into the other handle groove after horizontally moving. The miniature circuit breaker has the beneficial effects that a plurality of miniature circuit breakers can be mutually spliced for use, and the operating handles of the miniature circuit breakers are connected through the matching structure, so that an operator can simultaneously open and close the plurality of miniature circuit breakers.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a small circuit breaker which is convenient for combined use. Background Art

[0002] Miniature circuit breakers have the characteristics of advanced structure, reliable performance, strong breaking capacity, beautiful and compact appearance, etc. They are mainly used for overload and short-circuit protection of lighting, distribution lines and equipment in office buildings, residential buildings and similar buildings. They can also be used for infrequent on-off operation and conversion of lines.

[0003] In actual use, multiple small circuit breakers are often used in close proximity to each other. However, due to the lack of matching structure between the small circuit breakers, the overall stability of the multiple small circuit breakers during close proximity use is poor, and when the small circuit breakers are turned on or off, the handle of each small circuit breaker needs to be turned separately in turn, which is not convenient for quickly starting and shutting down multiple small circuit breakers at the same time, which is inconvenient. Summary of the invention

[0004] In view of the problem that the existing miniature circuit breakers have poor stability when used in close proximity to each other and it is inconvenient to start and shut down multiple miniature circuit breakers at the same time, the following invention is proposed: A small circuit breaker that is easy to use in combination, comprising a circuit breaker body and an operating handle movably arranged on the circuit breaker body, wherein a plurality of matching guide grooves and guide blocks are respectively arranged on the front and rear sides of the circuit breaker body, a first engaging head is arranged on the inner side wall of the guide groove, and a first engaging groove is arranged on the outer side wall of the guide block, the first engaging head is matched with the first engaging groove to prevent the guide block from horizontally escaping from the guide groove, a handle groove that passes through horizontally is arranged on the operating handle, and a matching mechanism that can move horizontally is arranged in the handle groove, and during the matching process of two circuit breaker bodies, after the guide block completely enters the guide groove, the matching mechanism in one handle groove is inserted into the other handle groove after horizontal movement, so as to realize the integrated connection of the two operating handles.

[0005] The present invention assembles multiple circuit breaker bodies together through a snap-fit ​​head and a snap-fit ​​groove, and then connects handles through a matching mechanism, so that an operator can simultaneously pull the handles on the multiple assembled circuit breaker bodies, thereby realizing simultaneous opening and closing of the multiple circuit breaker bodies.

[0006] Furthermore, the mating mechanism includes a connecting plate, a first mating block, and a second mating block. The first mating block and the second mating block are fixedly connected on both sides of the connecting plate. A sliding groove is provided on the top of the operating handle for the connecting plate to pass vertically through. After the connecting plate moves horizontally in the sliding groove, the first mating block or the second mating block is pushed to be horizontally inserted into the handle groove on the other operating handle.

[0007] Furthermore, a sliding plate covering the sliding groove is installed on the connecting plate. During the horizontal movement of the matching mechanism, the sliding plate always isolates the sliding groove from the outside world to reduce dust from entering the sliding groove.

[0008] Furthermore, the first matching block is provided with a positioning column, the second matching block is provided with a positioning hole matched with the positioning column, and the positioning column is inserted into the positioning hole to quickly connect the first matching block and the second matching block.

[0009] Furthermore, a plurality of second engaging heads are provided in the handle groove, and a plurality of second engaging grooves matching with the second engaging heads are provided on the first matching block and the second matching block.

[0010] Furthermore, a positioning sleeve is threadedly connected to the positioning column, and a positioning piece is threadedly connected to the positioning block. The positioning sleeve and the positioning piece prevent the matching mechanism from moving horizontally relative to the operating handle.

[0011] Furthermore, a sliding protrusion is provided on the top of the sliding plate. After the operator presses the sliding protrusion, the sliding plate can be quickly slid, which is convenient for the operator to connect the circuit breaker handle in an integrated manner.

[0012] Furthermore, it also includes a limiting plate, which is provided with a first connecting hole and a second connecting hole, the side of the second connecting hole is provided with a snap-fitting opening, and two connecting columns are provided at the top opening of the guide groove, the first connecting hole is movably connected to one of the connecting columns, and after the limiting plate rotates around the first connecting hole, the second connecting hole is snapped into the other connecting column through the snap-fitting opening, so that the limiting plate blocks the opening of the guide groove to prevent the guide block from vertically detaching from the guide groove.

[0013] Furthermore, a blocking plate is provided on each side of the two connecting columns to limit the rotation of the limiting plate within a certain angle.

[0014] The present invention provides a small circuit breaker that is easy to use in combination, and its beneficial effects are: (1) multiple circuit breaker bodies can be assembled into a stable whole through a snap-fit ​​groove and a snap-fit ​​block, which is convenient for operators to centrally install and manage the circuit breaker bodies; (2) on the basis of (1), a matching mechanism that can move horizontally is also provided on the operating handle of each circuit breaker body, and the matching structure is inserted into the handle groove of the operating handle on the other circuit breaker body to realize the integrated matching of the operating handle, so that the operator can quickly close and open the multiple circuit breaker bodies after pulling the operating handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the circuit breaker body after being assembled in the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the operating handle of the circuit breaker body of the present invention after being integrated; Figure 3 It is a schematic diagram of the three-dimensional structure of the circuit breaker body of the present invention; Figure 4 It is a schematic diagram of the split structure of the matching mechanism in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting piece in the present invention; Figure 6 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 7 For the present invention Figure 1 The enlarged structural diagram at B in the middle; Figure 8 For the present invention Figure 3 The enlarged structural diagram at C in the middle; Fig. 9 For the present invention Figure 3 Enlarged structural diagram at D in the middle.

[0016] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Circuit breaker body; 2. Operating handle; 3. Matching mechanism; 4. Limiting piece; 11. Guide groove; 12. Guide block; 13. First engaging groove; 14. First engaging head; 21. Handle groove; 22. Second engaging head; 23. Sliding groove; 31. First matching block; 32. Second matching block; 33. Connecting plate; 34. Sliding plate; 35. Sliding protrusion; 36. Second engaging groove; 37. Positioning column; 38. Positioning hole; 39. Positioning sleeve; 40. Positioning piece; 41. First connecting hole; 42. Second connecting hole; 43. Connecting column; 44. Blocking plate; 45. Engaging opening. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0018] Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0020] like Figure 1-Figure 9 As shown, it is a preferred embodiment of the present invention, a small circuit breaker that is easy to use in combination, including a circuit breaker body 1 and an operating handle 2 movably arranged on the circuit breaker body 1, the front and rear sides of the circuit breaker body 1 are respectively provided with a plurality of matching guide grooves 11 and guide blocks 12, the inner wall of the guide groove 11 is provided with a first engaging head 14, the outer wall of the guide block 12 is provided with a first engaging groove 13, the operating handle 2 is provided with a horizontally penetrating handle groove 21 and a vertically penetrating sliding groove 23, the sliding groove 23 is located at the top of the operating handle 2 and is connected to the handle groove 21, and the handle groove 21 is provided with a horizontally movable matching mechanism 3 and a second engaging head 22 protruding inward. The mating mechanism 3 includes a connecting plate 33, a first mating block 31, a second mating block 32, and a sliding plate 34. The connecting plate 33 vertically extends out of the sliding groove 23. The first mating block 31 and the second mating block 32 are fixedly connected to both sides of the connecting plate 33. A sliding plate 34 covering the sliding groove 23 is also installed on the connecting plate 33. A sliding protrusion 35 is provided on the top of the sliding plate 34. During the horizontal movement of the connecting plate 33 along the mating mechanism 3, the sliding plate 34 always isolates the sliding groove 23 from the outside during the movement. A plurality of second engaging grooves 36 matching the second engaging head 22 are provided on the first mating block 31 and the second mating block 32.

[0021] When multiple small circuit breakers need to be assembled together for use, the circuit breaker bodies 1 need to be assembled together. The specific steps are to vertically insert the guide block 12 of the rear circuit breaker body 1 into the guide groove 11 of the front circuit breaker body 1. The first engaging head 14 matches the first engaging groove 13 to prevent the guide block 12 from horizontally detaching from the guide groove 11. At this time, multiple small circuit breakers are integrated into a whole. In actual use, sometimes it is necessary to simultaneously move the operating handles 2 of the circuit breaker body 1. At this time, the operating handles 2 are first moved to the same position, and then the sliding plate 34 on one of the operating handles 2 is horizontally moved until the first matching block 31 or the second matching block 32 is horizontally inserted into the handle groove 21 of the other operating handle 2 to achieve the integrated connection of the two operating handles 2. At this time, when one of the handles is moved, the other handle will also move together.

[0022] In addition, the operator can also move the sliding plate 34 horizontally to release the integrated connection of the operating handle 2 so that the operating handle 2 can be controlled individually. Furthermore, when a large number of circuit breaker bodies 1 are used in combination, any number of adjacent operating handles 2 can be connected by moving the sliding plate 34, thereby achieving the purpose of simultaneously opening and closing the circuit breaker bodies 1 at specific positions, which is more flexible.

[0023] On this basis, a positioning column 37 is provided on the first matching block 31, and a positioning hole 38 matching the positioning column 37 is provided on the second matching block 32. After the matching mechanism 3 is moved horizontally, the positioning column 37 of the first matching block 31 is horizontally inserted into the positioning hole 38 of the second matching block 32 to achieve a fixed connection between the first matching block 31 and the second matching block 32. Furthermore, a positioning sleeve 39 is threadedly connected to the positioning column 37, and a positioning piece 40 is threadedly connected to the positioning block. The positioning sleeve 39 and the positioning piece 40 prevent the matching mechanism 3 from moving horizontally relative to the operating handle 2 to separate the matching mechanism 3. At this time, the individual operating handles 2 can be respectively moved.

[0024] On the basis of the above-mentioned small circuit breaker, a limit plate 4 is further provided, wherein the limit plate 4 is provided with a first connection hole 41 and a second connection hole 42, wherein a snap-fitting opening 45 is provided on the side of the second connection hole 42, and a first connection column 43 and a second connection column 43 are respectively provided on both sides of the opening of the guide groove 11, wherein the first connection hole 41 is movably connected to one of the connection columns 43, and after the limit plate 4 is rotated with the first connection hole 41 as the center, the second connection hole 42 is snapped into the other connection column 43 along the snap-fitting opening 45, so that the limit plate blocks the opening of the guide groove 11 to prevent the guide block 12 from vertically detaching from the guide groove 11. Furthermore, a blocking plate 44 is provided on the sides of the two connection columns 43 to limit the rotation of the limit plate to 0-180°.

[0025] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A small circuit breaker that is easy to use in combination, comprising a circuit breaker body (1) and an operating handle (2) movably arranged on the circuit breaker body (1), characterized in that: A plurality of matching guide grooves (11) and guide blocks (12) are respectively provided on the front and rear sides of the circuit breaker body (1), a first engaging head (14) is provided on the inner side wall of the guide groove (11), and a first engaging groove (13) is provided on the outer side wall of the guide block (12), the first engaging head (14) matches with the first engaging groove (13) to prevent the guide block (12) from horizontally escaping from the guide groove (11), a handle groove (21) which is transversely through is provided on the operating handle (2), and a matching mechanism (3) which can be moved horizontally is provided in the handle groove (21), and during the matching process of the two circuit breaker bodies (1), after the guide block (12) completely enters the guide groove (11), the matching mechanism (3) in one handle groove (21) is inserted into the other handle groove (21) after horizontal movement, so as to realize the integrated connection of the two operating handles (2).

2. The miniature circuit breaker according to claim 1, characterized in that: The mating mechanism (3) comprises a connecting plate (33), a first mating block (31), and a second mating block (32); the first mating block (31) and the second mating block (32) are fixedly connected to two sides of the connecting plate (33); a sliding groove (23) is provided on the top of the operating handle (2) for the connecting plate (33) to vertically pass through; after the connecting plate (33) moves horizontally in the sliding groove (23), it pushes the first mating block (31) or the second mating block (32) to be horizontally inserted into the handle groove (21) on the other operating handle (2).

3. The miniature circuit breaker according to claim 2, characterized in that: A sliding plate (34) is also mounted on the connecting plate (33) and covers the sliding groove (23). During the horizontal movement of the matching mechanism (3), the sliding plate (34) always isolates the sliding groove (23) from the outside.

4. The miniature circuit breaker according to claim 2, characterized in that: The first matching block (31) is provided with a positioning column (37), and the second matching block (32) is provided with a positioning hole (38) matching the positioning column (37).

5. The miniature circuit breaker according to claim 2, characterized in that: A plurality of second engaging heads (22) are provided in the handle groove (21), and a plurality of second engaging grooves (36) matching with the second engaging heads (22) are provided on the first matching block (31) and the second matching block (32).

6. The miniature circuit breaker according to claim 4, characterized in that: A positioning sleeve (39) is threadedly connected to the positioning column (37), and a positioning piece (40) is threadedly connected to the positioning block. The positioning sleeve (39) and the positioning piece (40) prevent the matching mechanism (3) from moving horizontally relative to the operating handle (2).

7. The miniature circuit breaker according to claim 3, characterized in that: A sliding protrusion (35) is also provided on the top of the sliding plate (34).

8. The miniature circuit breaker according to claim 1, characterized in that: The invention also comprises a limiting plate (4), wherein the limiting plate (4) is provided with a first connecting hole (41) and a second connecting hole (42), a snap-fitting opening (45) is provided on the side of the second connecting hole (42), and two connecting pillars (43) are provided at the top opening of the guide groove (11), the first connecting hole (41) is movably connected to one of the connecting pillars (43), and after the limiting plate (4) rotates around the first connecting hole (41), the second connecting hole (42) is snapped into the other connecting pillar (43) through the snap-fitting opening (45), so that the limiting plate blocks the opening of the guide groove (11) to prevent the guide block (12) from vertically detaching from the guide groove (11).

9. The miniature circuit breaker according to claim 8, characterized in that: A blocking plate (44) is respectively provided on the side of the two connecting columns (43) to limit the rotation of the limiting plate within a certain angle.

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