Plastic shell type circuit breaker

Abstract

The utility model is suitable for the technical field of electrical elements, and provides a plastic shell type circuit breaker. A slide rail; the circuit breaker body is installed on the surface of the sliding rail in a sliding mode; the switch is movably mounted on the surface of the circuit breaker body; the tooth grooves are symmetrically formed in the surface of the sliding rail up and down; and the positioning structures are symmetrically arranged in the middle of the circuit breaker body up and down and are movably clamped with the tooth grooves. Compared with the prior art, the beneficial effects of the utility model are that when in use, the circuit breaker body is conveniently fixed on the slide rail through the arrangement of the positioning structure, and because the whole positioning structure is in a sealed state, the situation that the circuit breaker body is easy to rust due to the traditional screw fixation is avoided, and the circuit breaker is convenient to remove constraint and take down.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical components, and in particular relates to a plastic housing type circuit breaker. Background Art

[0002] Molded case circuit breaker is an electrical protection device commonly used in power distribution systems and various electrical equipment in residential, commercial and industrial buildings to control and protect circuits and prevent fire accidents caused by faults such as overload and short circuit.

[0003] However, some existing circuit breakers are mostly fixed by screws during installation. Although the screws are easy to install, the existing screws may rust after being in contact with the air for a long time, which may cause slipping and inability to be removed during disassembly, resulting in the circuit breaker being unable to be removed quickly, thereby reducing work efficiency.

[0004] Therefore, how to provide a plastic case circuit breaker is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] The utility model aims to provide a plastic case circuit breaker, aiming to solve the problems mentioned in the background technology.

[0006] The utility model is implemented as follows: a plastic case circuit breaker comprises:

[0007] Slide rails;

[0008] A circuit breaker body, wherein the circuit breaker body is slidably mounted on the surface of the slide rail;

[0009] A switch, wherein the switch is movably mounted on the surface of the circuit breaker body;

[0010] Tooth grooves, the tooth grooves are symmetrically arranged on the surface of the slide rail;

[0011] The positioning structure is symmetrically arranged in the middle of the circuit breaker body and is movably engaged with the tooth groove.

[0012] Preferably, a shielding structure is further provided on the surface of the circuit breaker body, and the shielding structure includes a protective cover and a limit block. The protective cover is movably hinged on the surface of the circuit breaker body, and a slide groove is symmetrically provided on the top of the front side of the circuit breaker body. The limit block is movably arranged inside the slide groove and movably contacts with the surface of the protective cover.

[0013] Preferably, the positioning structure includes a first movable groove, a pressure rod, a first spring, a limiting unit and a clamping unit. The clamping unit is symmetrically arranged in the middle of the rear end of the circuit breaker body and is movably clamped with the tooth groove. The first movable groove is symmetrically opened in the middle of the circuit breaker body, the pressure rod is movably inserted in the first movable groove and applies pressure to the clamping unit. The first spring is fixedly installed at the upper end of the first movable groove and is fixedly connected to the top end of the first spring. The limiting unit is symmetrically arranged in the middle of the front side of the circuit breaker body and abuts against the surface of the first spring.

[0014] Preferably, the clamping unit includes a lifting slot and a third spring, the lifting slot is symmetrically opened at the rear end of the circuit breaker body, a positioning block is movably provided inside the lifting slot, the top of the positioning block is movably contacted with the rear end of the first spring, and the third spring is symmetrically installed on the left and right sides of the top of the positioning block and fixedly connected to the top of the lifting slot.

[0015] Preferably, the limiting unit includes a limiting rod, a second movable groove and a second spring, the limiting rod is symmetrically arranged in the middle of the front side of the circuit breaker body, and is connected with the top of the first movable groove, the second movable groove is movably arranged inside the limiting rod, and is movably abutted with the top of the first spring, and the second spring is fixedly installed at the rear end of the limiting rod, and is interactively abutted with the top of the rear end of the second movable groove.

[0016] Preferably, the facing surfaces of the pressure rod and the positioning block are both configured as inclined surfaces and are arranged opposite to each other, and the shape and size of the inner end of the positioning block are adapted to the shape and size of the tooth groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are: when in use, by setting a positioning structure, the circuit breaker body is conveniently fixed on the slide rail, and because the positioning structure is in a sealed state as a whole, the traditional screw fixing, which is prone to rust, is avoided, and it is convenient to release the constraints and remove it.

[0018] At the same time, by setting a shielding structure, the position and angle of the protective cover are constrained when opening or switching, so as to avoid it causing obstruction when frequently opening and closing, or being accidentally opened when closing, causing the switch to be accidentally closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of the overall appearance structure of a plastic case circuit breaker provided in an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a right side cross-sectional structure of a plastic case circuit breaker provided in an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of a left-side cross-sectional structure of a plastic case circuit breaker provided in an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the main cross-sectional structure of a plastic case circuit breaker provided in an embodiment of the utility model;

[0024] Figure 5 The embodiment of the utility model provides Figure 2 Schematic diagram of the enlarged structure of part A.

[0025] In the figure: 1-slide rail, 2-circuit breaker body, 3-first movable groove, 4-pressure rod, 5-first spring, 6-second movable groove, 7-limit rod, 8-second spring, 9-positioning block, 10-third spring, 11-tooth groove, 12-protective cover, 13-switch, 14-slide groove, 15-limiting block, 16-lifting groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 FIG. 1 is a schematic diagram of the structure of a plastic case circuit breaker provided by an embodiment of the utility model, comprising:

[0029] Slide rail 1;

[0030] A circuit breaker body 2, the circuit breaker body 2 is slidably mounted on the surface of the slide rail 1;

[0031] A switch 13, the switch 13 is movably mounted on the surface of the circuit breaker body 2;

[0032] Tooth grooves 11, which are symmetrically arranged on the surface of the slide rail 1;

[0033] The positioning structure is symmetrically arranged in the middle of the circuit breaker body 2 and is movably engaged with the tooth groove 11.

[0034] In the embodiment of the utility model, when in use, the circuit breaker body 2 is mounted on the slide rail 1, and then the positioning structure moves to engage with the tooth groove 11, thereby fixing the circuit breaker body 2;

[0035] By providing a positioning structure, the circuit breaker body 2 is conveniently fixed on the slide rail 1, and since the positioning structure is in a sealed state as a whole, the traditional screw fixing which is prone to rusting is avoided, and the constraint can be easily released and removed.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, as a preferred embodiment of the utility model, a shielding structure is further provided on the surface of the circuit breaker body 2, and the shielding structure includes a protective cover 12 and a limit block 15. The protective cover 12 is movably hinged on the surface of the circuit breaker body 2, and a slide groove 14 is symmetrically provided on the top of the front side of the circuit breaker body 2. The limit block 15 is movably arranged inside the slide groove 14 and movably contacts with the surface of the protective cover 12.

[0037] In the embodiment of the utility model, when opening or switching 13, the limit block 15 in the movable slide slot 14 is used to constrain the position and angle of the protective cover 12, thereby preventing it from causing obstruction when frequently switching 13, or from being opened by mistake when closing, causing the switch 13 to be closed by mistake;

[0038] By providing a shielding structure, when the protective cover 12 is closed, the shielding structure moves to the top of the closed protective cover 12, thereby preventing the protective cover 12 from being opened by mistake, causing the switch 13 to be closed by mistake.

[0039] like Figure 2 , Figure 4 and Figure 5 As shown, as a preferred embodiment of the utility model, the positioning structure includes a first movable groove 3, a pressure rod 4, a first spring 5, a limiting unit and a clamping unit. The clamping unit is symmetrically arranged in the middle of the rear end of the circuit breaker body 2 and is movably clamped with the tooth groove 11. The first movable groove 3 is symmetrically opened in the middle of the circuit breaker body 2, the pressure rod 4 is movably inserted in the inside of the first movable groove 3, and presses the clamping unit. The first spring 5 is fixedly installed at the upper end of the first movable groove 3 and is fixedly connected to the top end of the first spring 5. The limiting unit is symmetrically arranged in the middle of the front side of the circuit breaker body 2 and abuts against the surface of the first spring 5.

[0040] In the embodiment of the utility model, when in use, the circuit breaker body 2 is installed on the slide rail 1, and then moved to a specified position, and then the pressure rod 4 in the first movable groove 3 is pressed, so that the rear end squeezes the clamping unit, so that it is clamped into the tooth groove 11, and the limit unit is lifted up, and then when the pressure rod 4 moves to the limit position, the limit unit descends, which plays a role of restraining the top of the pressure rod 4;

[0041] By providing the first spring 5 , when the limiting unit moves, the pressure rod 4 is driven to reset, so that the clamping unit is reset, thereby contacting the constraint on the circuit breaker body 2 , thereby facilitating movement.

[0042] like Figure 2 , Figure 4 and Figure 5 As shown, as a preferred embodiment of the utility model, the clamping unit includes a lifting slot 16 and a third spring 10. The lifting slot 16 is symmetrically arranged at the rear end of the circuit breaker body 2. A positioning block 9 is movably arranged inside the lifting slot 16. The top of the positioning block 9 is in movably contact with the rear end of the first spring 5. The third spring 10 is symmetrically installed on the left and right sides of the top of the positioning block 9 and is fixedly connected to the top of the lifting slot 16.

[0043] In the embodiment of the utility model, when in use, when the pressure rod 4 moves, it will press the top of the positioning block 9 so that it is inserted into the tooth groove 11;

[0044] By providing the third spring 10, when the pressure rod 4 is reset, the positioning block 9 will be lifted, thereby contacting and restraining, thereby facilitating movement.

[0045] like Figure 2 , Figure 4 and Figure 5 As shown, as a preferred embodiment of the utility model, the limiting unit includes a limiting rod 7, a second movable groove 6 and a second spring 8. The limiting rod 7 is symmetrically arranged in the middle of the front side of the circuit breaker body 2 and is connected with the top of the first movable groove 3. The second movable groove 6 is movably arranged inside the limiting rod 7 and movably abuts against the top of the first spring 5. The second spring 8 is fixedly installed at the rear end of the limiting rod 7 and interactively abuts against the top of the rear end of the second movable groove 6.

[0046] In the embodiment of the utility model, when the pressure rod 4 moves, the limiting rod 7 in the second movable groove 6 is lifted up, and then when the pressure rod 4 moves to the limit position, the limiting rod 7 moves downward at its rear end under the action of the second spring 8, thereby constraining the top of the pressure rod 4;

[0047] By providing the second spring 8, the pressure rod 4 is prevented from resetting under the action of the first spring 5, causing the positioning block 9 to move away from the tooth groove 11 under the elasticity of the third spring 10, making it easy for it to move under the influence of external force.

[0048] like Figure 2 and Figure 4 As shown, as a preferred embodiment of the utility model, the facing surfaces of the pressure rod 4 and the positioning block 9 are both configured as inclined surfaces and are arranged relatively to each other, and the shape and size of the inner end of the positioning block 9 are adapted to the shape and size of the tooth groove 11.

[0049] In the embodiment of the utility model, when in use, by setting the facing surfaces of the pressure rod 4 and the positioning block 9 as inclined surfaces and arranging them relative to each other, it is convenient for the pressure rod 4 to squeeze the top of the positioning block 9, and by making the shape and size of the inner end of the positioning block 9 match the shape and size of the tooth groove 11, positioning is facilitated.

[0050] The above embodiment of the utility model provides a plastic case circuit breaker. When in use, the circuit breaker body 2 is mounted on the slide rail 1, then moved to a specified position, and then the pressure rod 4 in the first movable groove 3 is pressed, so that the rear end presses the top of the positioning block 9 in the lifting groove 16, so that it overcomes the elasticity of the third spring 10 and is stuck in the tooth groove 11;

[0051] At the same time, when the pressure rod 4 moves, the limiting rod 7 in the second movable groove 6 will be lifted up. Then, when the pressure rod 4 moves to the limit position, the limiting rod 7 moves downward at its rear end under the action of the second spring 8, thereby constraining the top of the pressure rod 4, preventing the pressure rod 4 from resetting under the action of the first spring 5, causing the positioning block 9 to move away from the tooth groove 11 under the elasticity of the third spring 10, causing it to be easily moved under the influence of external force;

[0052] When opening or switching the switch 13, the protective cover 12 is opened, and then the limit block 15 in the slide slot 14 is moved to the bottom of the top of the protective cover 12, so that the position of the protective cover 12 is fixed, thereby avoiding obstruction when frequently switching the switch 13. When the protective cover 12 is closed, it moves to the top of the closed protective cover 12, thereby avoiding the protective cover 12 being opened by mistake and causing the switch 13 to be closed by mistake.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic case circuit breaker, characterized in that: include; Slide rail (1); A circuit breaker body (2), wherein the circuit breaker body (2) is slidably mounted on the surface of the slide rail (1); A switch (13), wherein the switch (13) is movably mounted on the surface of the circuit breaker body (2); Tooth grooves (11), the tooth grooves (11) are symmetrically arranged on the surface of the slide rail (1); A positioning structure is symmetrically arranged in the middle of the circuit breaker body (2) and is movably engaged with the tooth groove (11).

2. A plastic case circuit breaker according to claim 1, characterized in that: The surface of the circuit breaker body (2) is also provided with a shielding structure, the shielding structure comprising a protective cover (12) and a limit block (15), the protective cover (12) is movably hinged on the surface of the circuit breaker body (2), a slide groove (14) is symmetrically provided on the top of the front side of the circuit breaker body (2), and the limit block (15) is movably arranged inside the slide groove (14) and is in movably contact with the surface of the protective cover (12).

3. A plastic case circuit breaker according to claim 1, characterized in that: The positioning structure comprises a first movable groove (3), a pressure rod (4), a first spring (5), a limiting unit and a clamping unit. The clamping unit is symmetrically arranged in the middle of the rear end of the circuit breaker body (2) and is movably clamped with the tooth groove (11). The first movable groove (3) is symmetrically opened in the middle of the circuit breaker body (2). The pressure rod (4) is movably inserted into the inside of the first movable groove (3) and applies pressure to the clamping unit. The first spring (5) is fixedly installed at the upper end of the first movable groove (3) and is fixedly connected to the top end of the first spring (5). The limiting unit is symmetrically arranged in the middle of the front side of the circuit breaker body (2) and is in contact with the surface of the first spring (5).

4. A plastic case circuit breaker according to claim 3, characterized in that: The clamping unit comprises a lifting slot (16) and a third spring (10); the lifting slot (16) is symmetrically arranged at the rear end of the circuit breaker body (2) in the upper and lower directions; a positioning block (9) is movably arranged inside the lifting slot (16); the top of the positioning block (9) is in movably contact with the rear end of the first spring (5); the third spring (10) is symmetrically mounted on the left and right sides of the top of the positioning block (9) and is fixedly connected to the top of the lifting slot (16).

5. A plastic case circuit breaker according to claim 3, characterized in that: The limiting unit comprises a limiting rod (7), a second movable groove (6) and a second spring (8); the limiting rod (7) is symmetrically arranged in the middle of the front side of the circuit breaker body (2) and is connected to the top of the first movable groove (3); the second movable groove (6) is movably arranged inside the limiting rod (7) and movably abuts against the top of the first spring (5); the second spring (8) is fixedly mounted on the rear end of the limiting rod (7) and interactively abuts against the top of the rear end of the second movable groove (6).

6. A plastic case circuit breaker according to claim 4, characterized in that: The facing surfaces of the pressure rod (4) and the positioning block (9) are both configured as inclined surfaces and are arranged relative to each other. The shape and size of the inner end of the positioning block (9) are adapted to the shape and size of the tooth groove (11).

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