A small circuit breaker that is easy to assemble

Abstract

The utility model discloses a small circuit breaker that is easy to assemble, and relates to the field of circuit breakers for low-voltage power systems, including a number of circuit breaker bodies spliced ​​side by side, wherein the circuit breaker body is provided with a number of locking rod holes penetrating therein, and the two ends of the locking rod holes are arranged on both sides of the circuit breaker body to form a limiting groove, and the inner diameter of the limiting groove is larger than the locking rod holes, and the locking rod holes on the circuit breaker bodies correspond to each other and penetrate a locking rod for connecting each circuit breaker body, and the locking rod includes a columnar locking rod body, and the two ends of the locking rod body are circumferentially protruded with flanges adapted to the limiting groove, and the length of the flange is consistent with the groove depth of the limiting groove. The small circuit breaker adopting the structure of the utility model not only optimizes the production process of the circuit breaker, improves production efficiency, but also reduces costs, and enhances the reliability and environmental performance of the product.

Description

Technical Field

[0001] The utility model belongs to the field of circuit breakers for low-voltage power systems, and in particular relates to a small circuit breaker which is easy to assemble. Background Art

[0002] When a miniature circuit breaker is in use, it is usually necessary to assemble two or more miniature circuit breakers along the width direction. In the prior art, riveting is usually used to assemble the circuit breakers. Multiple copper rivets are passed through the rivet holes, and the circuit breakers are riveted together using special riveting tools and equipment. For multi-pole combined assembly and riveting, a circular groove is mainly set on the outer cover of the circuit breaker during assembly, and a matching circular boss is set on the bottom of the adjacent circuit breaker outer cover to achieve assembly and positioning of the circuit breaker, or a positioning piece is set at each rivet hole and the multi-pole circuit breaker is spliced ​​through the positioning piece. After the splicing is completed, the circuit breaker is riveted together using special riveting tools and equipment.

[0003] However, the use of riveting assembly not only has a cumbersome riveting process and high copper rivet costs, but also affects production efficiency and user experience, and fails to achieve the desired effect.

[0004] In view of this, it is necessary to propose a small circuit breaker that is easy to assemble to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a small circuit breaker which is easy to assemble, so as to solve the problems of complicated riveting process, high cost of copper rivets, waste of resources and the like of small circuit breakers in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme: a small circuit breaker that is easy to assemble, comprising a plurality of circuit breaker bodies spliced ​​side by side, the circuit breaker body is provided with a plurality of locking rod holes penetrating therein, the two ends of the locking rod holes are arranged on both sides of the circuit breaker body to form limiting grooves, the inner diameter of the limiting grooves is larger than the locking rod holes, the locking rod holes on the plurality of circuit breaker bodies correspond to each other one by one and penetrated by locking rods for connecting the circuit breaker bodies, the locking rod comprises a columnar locking rod body, the two ends of the locking rod body are circumferentially protruded with flanges adapted to the limiting grooves, and the length of the flanges is consistent with the groove depth of the limiting grooves.

[0007] Optionally, the locking rod body is a hollow cylinder, and at least two diameter-reducing notches are formed around the tube diameter at both ends of the locking rod body.

[0008] Optionally, at least two disassembly square grooves are provided at one end of the outer peripheral side of the flange.

[0009] Optionally, the locking rod is made of high-strength flame-retardant elastic plastic material.

[0010] Optionally, at least one positioning protrusion is connected to the locking rod body, and a connection position between the positioning protrusion and the locking rod body is located at a position where two adjacent circuit breaker bodies contact each other.

[0011] Optionally, the positioning protrusion and the locking rod body are integrally formed.

[0012] Optionally, the small circuit breaker that is easy to assemble further includes a positioning piece located at the junction of the locking rod and the limiting groove, the center of the positioning piece is provided with an inner hole for accommodating the locking rod body to pass through, and the positioning piece is interference fit with the inner wall of the limiting groove.

[0013] Optionally, the positioning member is a C-shaped structure with one side open.

[0014] Optionally, the circuit breaker body also includes a handle and an operating mechanism, and the handle drives the moving contact and static contact located in the circuit breaker body to contact or separate through the operating mechanism to realize the on and off of the circuit; the part of the handle located outside the circuit breaker body has a handle center hole, and the multi-pole handles are connected by a multi-pole linkage round steel rod passing through the handle center hole.

[0015] Optionally, an operating mechanism connecting hole is provided on the outer side of the operating mechanism, and a plurality of the operating mechanisms on the multi-pole circuit breaker body are connected to achieve linkage through an assembly shaft inserted into the operating mechanism connecting hole.

[0016] The utility model discloses the following technical effects:

[0017] The utility model provides a small circuit breaker that is easy to assemble, has a simple structure, high assembly efficiency, and stable connection. The small circuit breaker adopting the structure of the utility model not only optimizes the production process of the circuit breaker, improves production efficiency, but also reduces costs, enhances product reliability and environmental protection performance, and is an innovative design with broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a circuit breaker body according to an embodiment of the utility model;

[0020] Figure 2 This is an internal structure diagram of a circuit breaker body according to an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the primary assembly structure in the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the secondary assembly structure in the embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of a four-level assembly structure in an embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of a pole locking rod in an embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of a diode lock rod in an embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the positioning member in the embodiment of the utility model;

[0027] Among them, 1. Circuit breaker body; 11. Lock rod hole; 12. Operating mechanism connection hole; 13. Handle center hole; 2. Handle; 3. Operating mechanism; 4a. Single-pole lock rod; 4b. Two-pole lock rod; 4c. Multi-pole lock rod; 41. Lock rod body; 42. Flange; 43. Reduced diameter notch; 44. Disassembly square groove; 45. Positioning protrusion; 5. Positioning piece; 6. Assembly shaft; 7. Multi-pole linkage round steel rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference Figures 1 to 8 As shown, the utility model provides a small circuit breaker that is easy to assemble, including a circuit breaker body 1 and a plurality of locking rods for locking two or more circuit breaker bodies 1. Figure 1As shown, a plurality of locking rod holes 11 are dispersedly arranged on the outer shell of the circuit breaker body 1, and the locking rod holes 11 are used to cooperate with the locking rod clearance to realize the splicing of two or more circuit breaker bodies 1. A limiting groove with a slightly larger inner diameter is provided at the end of the locking rod hole 11, and the limiting groove is used to position the two ends of the locking rod. When splicing, the multi-pole circuit breaker bodies 1 are arranged in parallel, and the multi-pole circuit breaker bodies 1 are combined together through the cooperation of the locking rod and the locking rod hole 11.

[0031] Specifically, the outer shell of the circuit breaker body 1 includes a first cover shell and a second cover shell that match each other, and the first cover shell and the second cover shell are provided with lock rod holes 11 correspondingly. The circuit breaker body 1 also includes a handle 2 and an operating mechanism 3, and the handle 2 drives the moving contact of the circuit breaker to contact or separate with the static contact through the operating mechanism 3 to realize the on-off of the circuit, and the handle center hole 13 is provided in the middle of the part of the handle 2 protruding outside the outer shell of the circuit breaker body 1, and the multi-pole handles 2 are connected through the multi-pole linkage round steel rod 7 to achieve linkage; the operating mechanism 3 has an operating mechanism connection hole 12 on the outside, and the operating mechanisms 3 of each pole circuit breaker are connected through the assembly shaft 6 inserted in the operating mechanism connection hole 12 to achieve linkage.

[0032] Specifically, the locking rod is divided into a single-pole locking rod 4a, a two-pole locking rod 4b and a multi-pole locking rod 4c; the locking rod is made of high-strength, elastic and flame-retardant plastic; the middle of the single-pole locking rod 4a, the two-pole locking rod 4b and the multi-pole locking rod 4c is a hollow cylindrical locking rod body 41, the diameter of the locking rod body 41 is slightly smaller than the inner diameter of the locking rod hole 11 on the circuit breaker body 1, the two ends of the locking rod body 41 are radially expanded, and protrude toward the outer peripheral side to form a flange 42, and at least two diameter reduction notches 43 are opened on the pipe diameter at both ends, so that the end forms a slotted multi-petal shape, so that the outer diameter of the flange 42 part can be elastically contracted, which is convenient for assembly. The diameter of the flanges 42 at both ends of the locking rod body 41 is slightly larger than the locking rod hole 11 in the natural state, slightly smaller than the diameter of the limiting groove, and the length is consistent with the groove depth of the limiting groove. After assembly, it is flush with the surface of the circuit breaker body 1.

[0033] To further optimize the solution, at least one disassembly square groove 44 is provided on the outer peripheral side of the flange 42 to facilitate disassembly so that the locking rod can be reused; preferably, two disassembly square grooves 44 are provided on opposite sides of the outer peripheral side of the flange 42.

[0034] like Figure 6 As shown, the overall length of a pole locking rod 4a is consistent with the thickness of a circuit breaker body 1, including a locking rod body 41, flanges 42 located at both ends of the locking rod body 41, reduced diameter notches 43 and disassembly square grooves 44 opened on the sides of both ends of the locking rod body 41.

[0035] like Figure 7As shown, the overall length of the two-pole locking rod 4b is consistent with the thickness of the two circuit breaker bodies 1. Its structure further includes a positioning protrusion 45 located in the middle of the locking rod body 41 on the basis of the single-pole locking rod 4a. The positioning protrusion 45 protrudes radially from the locking rod body 41. Its diameter is the same as that of the flanges 42 at both ends, which are slightly smaller than the limiting grooves. Its length is slightly less than twice the depth of the limiting grooves, which plays a role in positioning between poles.

[0036] like Figure 5 As shown, the overall length of the multi-pole locking rod 4c is determined according to the overall thickness of the circuit breaker body 1 to be spliced, and its structure is based on the single-pole locking rod 4a and also includes multiple positioning protrusions 45 and multiple positioning members 5 connected to the locking rod body 41. The positions of the positioning protrusions 45 and the multiple positioning members 5 are set at the contact position of two adjacent circuit breaker bodies 1, which also plays the role of positioning between poles.

[0037] In some embodiments, the positioning protrusion 45 is integrally formed with the locking rod body 41 .

[0038] In some embodiments, the positioning member 5 is detachably sleeved on the locking rod body 41 and can be adjusted and replaced as needed.

[0039] Further optimization scheme, a positioning member 5 is further provided at the position where the locking rod and the limiting groove of the circuit breaker body 1 meet, and specifically, a positioning member 5 is provided in each corresponding limiting groove of the adjacent two-pole circuit breaker body 1. The positioning structure is as follows Figure 8 As shown, it includes an inner hole for the locking rod body 41 to pass through, the diameter of the inner hole of the positioning member 5 is larger than the diameter of the locking rod, and the positioning member 5 is set as an open ring structure, that is, a C-shaped structure, which is easy to install. The positioning member 5 and the inner wall of the limiting groove are interference fit. During assembly, the positioning member 5 mainly plays a positioning role. Therefore, the positioning member 5 can be omitted in a single-pole circuit breaker (a single circuit breaker body 1) and a two-pole circuit breaker (two circuit breaker bodies 1), and the positioning member 5 needs to be assembled in a three-pole circuit breaker and a four-pole circuit breaker.

[0040] In some embodiments, the positioning protrusion 45 has the same structure as the positioning member 5 , both of which are C-shaped structures with one side open, and only differ in thickness.

[0041] It should be understood that, in practical applications, the number of poles and the length of the locking rod are adaptively adjusted according to the number of spliced ​​circuit breaker bodies 1 .

[0042] The embodiments of the present utility model at least disclose the following technical effects:

[0043] 1. Improve production efficiency and simplify assembly process. Traditional circuit breaker splicing often requires special riveting tools and complicated riveting procedures. However, this design simplifies the process and reduces assembly time by matching the lock rod hole 11 with the plastic lock rod.

[0044] 2. Easy to operate. The use of plastic locking rods reduces the difficulty of assembly. Operators can complete the splicing work without complex training, further improving the operating efficiency of the production line.

[0045] 3. Save costs. Traditional copper rivets are expensive, while the cost of plastic locking rods is relatively low. Long-term use can significantly reduce material costs.

[0046] 4. Reusable. The plastic locking rod is designed to be reusable, which means that when the circuit breaker is repaired or replaced, the locking rod can be disassembled and reused, reducing resource waste.

[0047] 5. The structure is stable. The combination of the locking rod hole 11 and the plastic locking rod provides a stable mechanical connection, ensuring the structural strength and stability of the circuit breaker during use.

[0048] 6. Strong adaptability. The plastic material has a certain elasticity and can adapt to temperature changes in different environments to a certain extent, reducing the problem of loose connections caused by thermal expansion and contraction.

[0049] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A small circuit breaker that is easy to assemble, characterized in that: The invention comprises a plurality of circuit breaker bodies (1) connected side by side, wherein the circuit breaker body (1) is provided with a plurality of locking rod holes (11) penetrating therein, and the two ends of the locking rod holes (11) are arranged on both sides of the circuit breaker body (1) to form limiting grooves, and the inner diameter of the limiting grooves is larger than the locking rod holes (11). The locking rod holes (11) on the plurality of circuit breaker bodies (1) correspond to each other and penetrate with locking rods for connecting the circuit breaker bodies (1), and the locking rods comprise a columnar locking rod body (41), and the two ends of the locking rod body (41) are circumferentially protruded with flanges (42) adapted to the limiting grooves, and the length of the flanges (42) is consistent with the groove depth of the limiting grooves.

2. The miniature circuit breaker that is easy to assemble according to claim 1 is characterized in that: The locking rod body (41) is in the shape of a hollow cylinder, and at least two diameter-reducing notches (43) are formed around the tube diameter at both ends of the locking rod body (41).

3. The miniature circuit breaker that is easy to assemble according to claim 2 is characterized in that: At least two disassembly square grooves (44) are provided at one end of the outer peripheral side of the flange (42).

4. The miniature circuit breaker that is easy to assemble according to claim 1, 2 or 3, characterized in that: The locking rod is made of high-strength flame-retardant elastic plastic material.

5. The miniature circuit breaker that is easy to assemble according to claim 4 is characterized in that: At least one positioning protrusion (45) is connected to the locking rod body (41), and the connection position between the positioning protrusion (45) and the locking rod body (41) is located at a position where two adjacent circuit breaker bodies (1) contact each other.

6. The miniature circuit breaker that is easy to assemble according to claim 5, characterized in that: The positioning protrusion (45) and the locking rod body (41) are integrally formed.

7. The miniature circuit breaker that is easy to assemble according to claim 1, characterized in that: It also includes a positioning piece (5) located at the junction of the locking rod and the limiting groove, wherein the center of the positioning piece (5) is provided with an inner hole for accommodating the locking rod body (41) to pass through, and the positioning piece (5) is interference fit with the inner wall of the limiting groove.

8. The miniature circuit breaker that is easy to assemble according to claim 7, characterized in that: The positioning member (5) is a C-shaped structure with one side open.

9. The miniature circuit breaker that is easy to assemble according to claim 1, characterized in that: The circuit breaker body (1) further comprises a handle (2) and an operating mechanism (3); the handle (2) drives a moving contact located in the circuit breaker body (1) to contact or separate from a stationary contact through the operating mechanism (3), thereby realizing the on-off of a circuit; a portion of the handle (2) located outside the circuit breaker body (1) is provided with a handle center hole (13); and the multi-pole handles (2) are connected to each other through a multi-pole linkage round steel bar (7) penetrating the handle center hole (13).

10. The miniature circuit breaker that is easy to assemble according to claim 9, characterized in that: An operating mechanism connecting hole (12) is provided on the outside of the operating mechanism (3), and a plurality of operating mechanisms (3) on the multi-pole circuit breaker body (1) are connected to achieve linkage through an assembly shaft (6) inserted into the operating mechanism connecting hole (12).

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