Circuit breaker

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a circuit breaker. The circuit breaker comprises a mounting shaft, a partition plate and a shell, the partition is connected with one end of the mounting shaft; the shell is used for being buckled with the partition plate and comprises an installation part arranged on the inner wall of the shell in a protruding mode, the installation part comprises a check block and an installation groove, the end, away from the inner wall of the shell, of the check block is provided with a guide slope, the guide slope obliquely extends towards the interior of the installation groove along one end of the check block, and the check block is used for limiting deviation of the other end of the installation shaft. And the guide inclined surface is used for enabling the other end of the mounting shaft to slide into the mounting groove along the guide inclined surface. According to the utility model, the mounting shaft can be conveniently and smoothly mounted in the mounting groove of the shell, the labor intensity of assembly personnel is prevented from being increased, and the assembly personnel are prevented from being limited by the overall size of the circuit breaker, thereby reducing the production difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker. Background Art

[0002] In the transmission mechanism inside the circuit breaker, a hinged shaft is often used as the positioning reference or rotation fulcrum of the transmission mechanism. The existing assembly steps of the circuit breaker usually involve inserting one end of the mounting shaft on the partition first, then assembling the relevant mechanism, and finally closing the cover plate so that the other end of the shaft is inserted into the positioning hole of the cover plate.

[0003] Before the circuit breaker is fastened with the cover, the installation axis has a certain offset due to the influence of the mechanism assembled on the installation axis. If the offset of the installation axis is too large, it will seriously affect the fastening of the cover. Once the installation axis fails to be successfully installed in the designated positioning hole due to excessive offset, it will directly affect the movement state of the transmission mechanism, affect the performance of the product, and even cause the product to fail.

[0004] In order to ensure that the mounting shaft can be successfully installed in the designated positioning hole after the cover is buckled, the following two measures are usually adopted: 1. The positioning hole on the partition and the mounting shaft adopt an interference fit; 2. Increase the insertion depth of the mounting hole on the partition and the mounting shaft. When using interference fit, the operator needs to expend a lot of physical strength to insert the mounting shaft into the positioning hole, resulting in increased labor intensity for the assembler and increased production difficulty; in addition, since the circuit breaker itself is small in size and the space inside it is even smaller, it is difficult to increase the depth of the positioning hole on the partition due to the space size of the circuit breaker itself. Utility Model Content

[0005] The utility model aims to provide a circuit breaker, which facilitates the installation shaft to be smoothly installed into the installation groove of the shell, avoids increasing the labor intensity of the assemblers, avoids being restricted by the overall size of the circuit breaker, and thus reduces the production difficulty.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Circuit breakers, including:

[0008] Install the shaft;

[0009] a partition plate connected to one end of the mounting shaft;

[0010] A shell is used to engage with the partition, the shell includes a mounting portion protruding from the inner wall of the shell, the mounting portion includes a stopper and a mounting groove, the stopper is provided with a guide bevel at one end away from the inner wall of the shell, the guide bevel extends obliquely along one end of the stopper toward the inside of the mounting groove, the stopper is used to limit the displacement of the other end of the mounting shaft; and the guide bevel is used to make the other end of the mounting shaft slide into the mounting groove along the guide bevel.

[0011] As an optional solution for a circuit breaker, the mounting groove is formed by a vertical plate vertically arranged on the inner wall of the shell and surrounded by the stop block.

[0012] As an optional solution for a circuit breaker, the vertical plate is U-shaped on the plane of the inner wall of the shell, and the stopper is protruding from a side of the vertical plate having an opening.

[0013] As an optional solution for a circuit breaker, a first chamfer is provided at one end of the vertical plate away from the inner wall of the shell.

[0014] As an optional solution for a circuit breaker, the stopper and the vertical plate are an integrated structure.

[0015] As an optional solution for a circuit breaker, both ends of the installation shaft are respectively provided with a second chamfer.

[0016] As an optional solution for a circuit breaker, the partition and the mounting shaft are an integrated structure.

[0017] As an optional solution for a circuit breaker, a positioning hole is provided on the partition, and one end of the mounting shaft is fixed in the positioning hole.

[0018] As an optional solution for a circuit breaker, a positioning block is protruded on the partition, the positioning block is provided with the positioning hole, and a third chamfer is provided at one end of the positioning hole away from the partition.

[0019] As an optional solution for a circuit breaker, the housing and the mounting portion are an integrated structure.

[0020] Beneficial effects:

[0021] In the utility model, the partition is buckled with the shell, so that the mechanism inside the circuit breaker is located in the installation space formed by the partition and the shell. By setting a stopper on the shell in the offset direction of the other end of the installation shaft, when the shell is buckled with the partition, the installation shaft will tilt in the direction of the stopper. As the buckling process continues, the other end of the installation shaft will first abut against the guide slope, and further slide into the installation groove from the guide slope, so as to facilitate the installation shaft to be smoothly installed in the installation groove of the shell, avoiding the increase in labor intensity of the assembler caused by the hole-shaft tight fit connection method used in the prior art, and also avoiding the increase in the hole depth while being restricted by the overall size of the circuit breaker, effectively reducing the production difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a circuit breaker provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a housing provided by an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the housing and the mounting shaft provided in the embodiment of the utility model;

[0025] Figure 4 yes Figure 3 A local enlarged view at point A;

[0026] Figure 5 It is a structural schematic diagram of a partition provided by an embodiment of the utility model;

[0027] Figure 6 It is a schematic structural diagram of the cooperation between the partition and the installation shaft provided in an embodiment of the utility model.

[0028] In the figure:

[0029] 1. Mounting shaft; 11. Second chamfer; 2. Partition plate; 21. Positioning hole; 211. Third chamfer; 3. Shell; 31. Stopper; 311. Guide slope; 32. Mounting groove; 321. Vertical plate; 322. First chamfer. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] Please see attached Figure 1 -Attached Figure 5 The present embodiment relates to a circuit breaker, which includes a mounting shaft 1, a partition 2 and a shell 3; the partition 2 is connected to one end of the mounting shaft 1; the shell 3 is used to buckle with the partition 2, the shell 3 includes a mounting portion protruding from the inner wall of the shell 3, the mounting portion includes a stopper 31 and a mounting groove 32, the end of the stopper 31 away from the inner wall of the shell 3 is provided with a guide slope 311, the guide slope 311 extends obliquely along one end of the stopper 31 toward the inside of the mounting groove 32, the stopper 31 is used to limit the deviation of the other end of the mounting shaft 1; and the guide slope 311 is used to make the other end of the mounting shaft 1 slide into the mounting groove 32 along the guide slope 311.

[0035] In this embodiment, the partition 2 and the housing 3 are buckled together so that the mechanism inside the circuit breaker is located in the installation space formed by the partition 2 and the housing 3. The partition 2 and the housing 3 can be connected by riveting or clamping. Various limiting structures are convexly provided on the opposite wall surfaces of the partition 2 and the housing 3, which are used to position some parts of the transmission mechanism. Among them, the installation shaft 1 is the main hinged transmission part of the circuit breaker transmission mechanism. Usually, the two ends of the installation shaft 1 are respectively fixed or rotatably connected to the partition 2 and the housing 3. When the housing 3 is buckled with the partition 2, since the other end of the installation shaft 1 is easy to tilt in a certain direction, after the housing 3 and the partition 2 are buckled together, the other end of the installation shaft 1 is not successfully inserted into the installation groove 32. In this embodiment, by setting a stopper 31 in the offset direction of the other end of the installation shaft 1, when the shell 3 is engaged with the partition 2, the installation shaft 1 will tilt toward the stopper 31. As the engaging process continues, the other end of the installation shaft 1 will first abut against the guide slope 311, and further slide into the installation groove 32 from the guide slope 311, thereby facilitating the installation shaft 1 to be smoothly installed into the installation groove 32 of the shell 3, avoiding the increase in labor intensity of assemblers caused by the tight fit connection method of the hole and shaft in the prior art, and also avoiding the increase in the hole depth while being restricted by the overall size of the circuit breaker, thereby effectively reducing the production difficulty.

[0036] Optionally, the mounting groove 32 is formed by a vertical plate 321 vertically arranged on the inner wall of the housing 3 and a stopper 31. The vertical plate 321 is U-shaped on the plane of the inner wall of the housing 3, and the stopper 31 is convexly arranged on one side of the vertical plate 321 with an opening.

[0037] In this embodiment, the vertical plate 321 is protruded outward along the inner wall of the shell 3, and the vertical plate 321 is enclosed to form a U-shape. The inner wall of the vertical plate 321 forms a limiting space on one side for accommodating the installation shaft 1, and one side of the installation shaft 1 is reliably limited. Further, the stopper 31 is protruded on one side of the opening of the U-shaped vertical plate 321, and the stopper 31 is protruded upward to completely close the installation groove 32 in the horizontal direction, thereby ensuring that the installation shaft 1 is completely limited in the plane of the inner wall of the shell 3. Of course, in other embodiments, the vertical plate 321 can also be designed to be an arc in the plane of the inner wall of the shell 3. This embodiment does not specifically limit the shape of the vertical plate 321 relative to the plane of the inner wall of the shell 3, as long as the formed installation groove 32 can reliably limit the installation shaft 1.

[0038] Optionally, a first chamfer 322 is provided at one end of the vertical plate 321 away from the inner wall of the shell 3 .

[0039] In this embodiment, the first chamfer 322 enables the other end of the installation shaft 1 to smoothly enter the installation groove 32 when the shell 3 and the partition 2 are engaged. The function of the first chamfer 322 is the same as that of the guide slope 311, and can also guide the installation of the installation shaft 1.

[0040] Optionally, the stopper 31 and the vertical plate 321 are an integrated structure.

[0041] In this embodiment, the stopper 31 and the vertical plate 321 are both structures protruding from the inner wall of the shell 3. They can be made of the same material as the shell 3 and can be molded in one step by manufacturing a plastic compression mold. The use of an integrated structure can reduce the manufacturing cost of parts, reduce assembly links, and improve assembly efficiency.

[0042] Optionally, a second chamfer 11 is provided at both ends of the mounting shaft 1 .

[0043] In this embodiment, the installation axis 1 is an optical axis, and a second chamfer 11 of a certain size can be processed at both ends of the optical axis, so that the assembler can easily insert one end of the installation axis 1 into the partition 2 to form a plug-in fit, and also make it easier for the installation axis 1 to be introduced into the installation groove 32 when the shell 3 is buckled with the partition 2.

[0044] Optionally, the partition plate 2 and the mounting shaft 1 are an integrated structure.

[0045] By forming the partition 2 and the installation shaft 1 into an integrated structure, the number of parts can be further reduced and the difficulty of assembly is lowered. At the same time, the installation shaft 1 is directly formed on the partition 2, which can better ensure the position accuracy of the installation shaft 1 and the partition 2. Therefore, when the shell 3 and the partition 2 are snapped together, the offset of the installation shaft 1 is small or the deviation is basically eliminated, which effectively improves the one-time success rate of the other end of the installation shaft 1 entering the installation groove 32, further improving the assembly efficiency.

[0046] Please refer to the attached Figure 5 and attached Figure 6 Optionally, a positioning hole 21 is provided on the partition 2, and one end of the mounting shaft 1 is fixed in the positioning hole 21.

[0047] When the installation shaft 1 and the partition 2 adopt a split structure, a positioning hole 21 can be set on the partition 2 on the wall surface relative to the shell 3. During assembly, one end of the installation shaft 1 is first inserted into the positioning hole 21 to achieve positioning. At the same time, in order to prevent the installation shaft 1 from shifting in the positioning hole 21 when the shell 3 and the partition 2 are buckled, glue can be applied on the positioning hole 21 to stably fix the installation shaft 1 in the positioning hole 21.

[0048] Furthermore, a positioning block is protruding from the partition plate 2 , a positioning hole 21 is provided on the positioning block, and a third chamfer 211 is provided at one end of the positioning hole 21 away from the partition plate 2 .

[0049] In this embodiment, the positioning block is a cylinder, and the third chamfer 211 can facilitate the operator to insert one end of the installation shaft 1 into the positioning hole 21, thereby further improving the assembly efficiency.

[0050] Optionally, the housing 3 and the mounting portion are an integrated structure.

[0051] In this embodiment, the entire mounting portion and the housing 3 can be integrally formed by manufacturing a corresponding plastic compression mold and molding them in one step. The use of an integrated structure can reduce the manufacturing cost of parts, reduce assembly links, and improve assembly efficiency.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A circuit breaker, characterized in that include: Install the shaft (1); A partition plate (2), the partition plate (2) being connected to one end of the mounting shaft (1); A shell (3) is used to be engaged with the partition (2), the shell (3) includes a mounting portion protruding from the inner wall of the shell (3), the mounting portion includes a stopper (31) and a mounting groove (32), the stopper (31) is provided with a guide bevel (311) at one end away from the inner wall of the shell (3), the guide bevel (311) extends obliquely along one end of the stopper (31) toward the inside of the mounting groove (32), the stopper (31) is used to limit the deviation of the other end of the mounting shaft (1); and the guide bevel (311) is used to make the other end of the mounting shaft (1) slide into the mounting groove (32) along the guide bevel (311).

2. The circuit breaker according to claim 1, characterized in that: The installation groove (32) is formed by a vertical plate (321) vertically arranged on the inner wall of the shell (3) and the stopper (31).

3. The circuit breaker according to claim 2, characterized in that: The vertical plate (321) is U-shaped on the plane of the inner wall of the shell (3), and the stopper (31) is protrudingly arranged on a side of the vertical plate (321) having an opening.

4. The circuit breaker according to claim 2, characterized in that: A first chamfer (322) is provided at one end of the vertical plate (321) away from the inner wall of the shell (3).

5. The circuit breaker according to claim 2, characterized in that: The stopper (31) and the vertical plate (321) are an integrated structure.

6. The circuit breaker according to any one of claims 1 to 5, characterized in that: Second chamfers (11) are respectively provided at both ends of the installation shaft (1).

7. The circuit breaker according to any one of claims 1 to 5, characterized in that: The partition plate (2) and the mounting shaft (1) are an integrated structure.

8. The circuit breaker according to any one of claims 1 to 5, characterized in that: The partition plate (2) is provided with a positioning hole (21), and one end of the mounting shaft (1) is fixed in the positioning hole (21).

9. The circuit breaker according to claim 8, characterized in that A positioning block is protruding from the partition (2), the positioning block is provided with the positioning hole (21), and a third chamfer (211) is provided at one end of the positioning hole (21) away from the partition (2).

10. The circuit breaker according to any one of claims 1 to 5, characterized in that: The housing (3) and the mounting portion are an integrated structure.

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