Plastic shell type circuit breaker capable of being quickly disassembled

Abstract

The utility model relates to the technical field of circuit breakers, and particularly discloses a plastic shell type circuit breaker capable of being disassembled quickly, after a fixed rod is inserted into a mounting hole, a push rod is pushed to slide towards the inside of the fixed rod, a dragging block is pushed to slide, two sliding rods in the dragging block push two clamping blocks to rotate, the two sliding rods are pulled by the clamping blocks in the process, and the two clamping blocks are pushed to rotate. When disassembly is needed, the clamping strips are pressed downwards to enable the clamping strips to be separated from the ejector rods, the ejector rods can reset under the action of elastic force of the springs, the clamping blocks reset, and disassembly is completed. The mounting and dismounting of the circuit breaker are completed, the effects of rapid dismounting and convenient maintenance are achieved, the adjustment of the position of the fixing rod is completed by pulling the distance between the two position adjusting rods, and the effect of adjusting according to the position of the mounting hole is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a quickly detachable plastic shell type circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague, and those above 3kV are generally called high-voltage electrical appliances.

[0003] Existing Chinese patent: A plastic case circuit breaker, patent number: CN217903056U, including a base and an upper cover, an arc extinguishing chamber is arranged in the base, the arc extinguishing chamber includes an arc extinguishing piece and an arc extinguishing piece mounting plate, the arc extinguishing piece is fixed on the arc extinguishing piece mounting plate, the tail of the arc extinguishing piece is inclined toward the upper cover, an arc isolation plate and an insulating plate are arranged on one side of the tail of the arc extinguishing piece, the arc isolation plate and the insulating plate are fixed between the upper cover and the base, and the arc isolation plate is arranged close to the arc extinguishing piece. The utility model blocks the escaped arc in the arc extinguishing chamber by arranging the arc isolation plate and the insulating plate, extinguishes the arc again, avoids the influence of the arc on the terminal, and can also improve its arc extinguishing effect.

[0004] However, during the implementation of the above technical solution, it was found that at least the following technical problems exist: the above circuit breaker needs to be installed with the help of bolts. During the installation and commissioning of the electrical cabinet and the subsequent maintenance, the bolt installation method cannot be used to disassemble and assemble the circuit breaker simply and quickly, making the commissioning and maintenance process more cumbersome. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a quickly detachable plastic case circuit breaker, which solves the technical problem that the above-mentioned circuit breaker needs to be installed with the help of bolts. During the installation and commissioning of the electrical cabinet and the subsequent maintenance, the bolt installation method cannot simply and quickly disassemble and assemble the circuit breaker, making the commissioning and maintenance process more cumbersome.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A quickly detachable plastic case circuit breaker comprises a circuit breaker body, a sliding box is fixedly installed on the side end of the circuit breaker body, two adjustment rods are symmetrically slidably installed at both ends of the sliding box, two fixed rods are symmetrically fixedly installed at both ends of the adjustment rod, a gear is rotatably installed inside the sliding box, a first rack is slidably installed inside the sliding box, and a second rack is slidably installed inside the sliding box; the first rack and the second rack are meshed with the gear, and the ends thereof are respectively fixedly connected with the two adjustment rods, a top rod is slidably installed inside the fixed rod, two clamping blocks are rotatably installed on the side end of the fixed rod, a dragging block is fixedly installed on the side end of the top rod, and two sliding rods are slidably installed inside the dragging block; the two sliding rods are respectively rotatably connected with the two clamping blocks, and two clamping strips are symmetrically fixedly installed at both ends of the adjustment rod.

[0010] Preferably, two guide grooves are symmetrically provided on both sides of the circuit breaker body.

[0011] Preferably: a spring is installed on the outer side wall of the push rod.

[0012] (III) Beneficial effects

[0013] 1. Push one of the adjusting rods, and the first rack or the second rack connected thereto will drive the other adjusting rod to slide by meshing with the gear, so as to adjust the distance between the two adjusting rods, so that the fixing rod fixed at the side end of the adjusting rod can slide inside the guide groove, so that the fixing rod can be aligned with the mounting hole, and the position of the fixing rod is adjusted by pulling the distance between the two adjusting rods, thereby achieving the effect of being able to adjust according to the position of the mounting hole.

[0014] 2. After inserting the fixing rod into the mounting hole, push the top rod to slide inside the fixing rod, which will push the drag block to slide. The two sliding rods in the drag block will push the two card blocks to rotate. During this process, the two sliding rods are pulled by the card blocks and will slide inside the drag block. The inward sliding top rod will be stuck by the card strip, and the two rotated card blocks will be stuck to the inner wall of the main mounting hole to complete the fixation. When it needs to be removed, press the card strip downward to make the card strip leave the top rod. The top rod will reset under the elastic force of the spring, and the card block will reset to complete the disassembly. By pressing the spring or the card strip, the installation and disassembly of the circuit breaker are completed, achieving the effect of quick disassembly and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the guide groove of the utility model;

[0017] Figure 2This is a structural diagram of the adjustment rod of the utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the sliding box of the utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the fixing rod of the present utility model.

[0020] Legend: 1. Circuit breaker body; 2. Sliding box; 3. Adjusting rod; 4. Fixing rod; 5. Push rod; 6. Block; 7. Gear; 8. First rack; 9. Second rack; 11. Drag block; 12. Sliding rod; 13. Block; 14. Guide groove; 15. Spring. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a quickly detachable plastic case circuit breaker, which effectively solves the above-mentioned circuit breaker. The circuit breaker needs to be installed with the help of bolts. During the installation and commissioning of the electric cabinet and the subsequent maintenance, the bolt installation method cannot simply and quickly disassemble and assemble the circuit breaker, making the commissioning and maintenance process more cumbersome. By pushing one of the adjustment rods, the first rack or the second rack connected thereto will drive the other adjustment rod to slide through the engagement with the gear, which is used to adjust the distance between the two adjustment rods, so that the fixing rod fixed at the side end of the adjustment rod can slide inside the guide groove so that the fixing rod can align with the mounting hole, and the distance between the two adjustment rods is pulled to complete the fixing. The rod position can be adjusted according to the position of the mounting hole. After the fixing rod is inserted into the mounting hole, the top rod is pushed to slide inside the fixing rod, which will push the drag block to slide. The two sliding rods in the drag block push the two card blocks to rotate. In this process, the two sliding rods are pulled by the card blocks and will slide inside the drag block. The inward sliding top rod will be stuck by the card strip, and the two rotated card blocks will be stuck to the inner wall of the main mounting hole to complete the fixation. When it needs to be removed, press the card strip downward to make the card strip leave the top rod, and the top rod will be reset under the elastic force of the spring. The card block is reset to complete the disassembly. The installation and disassembly of the circuit breaker can be completed by pressing the spring or the card strip, achieving the effect of quick disassembly and easy maintenance.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the above-mentioned circuit breaker needs to be installed with the help of bolts during installation. During the installation and commissioning of the electric cabinet and the subsequent maintenance, the bolt installation method cannot simply and quickly disassemble and assemble the circuit breaker, making the commissioning and maintenance process more complicated. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a quickly detachable plastic case circuit breaker, comprising a circuit breaker body 1, a sliding box 2 is fixedly installed on the side end of the circuit breaker body 1, two adjusting rods 3 are symmetrically slidably installed at both ends of the sliding box 2, two fixing rods 4 are symmetrically fixedly installed at both ends of the adjusting rod 3, a gear 7 is rotatably installed inside the sliding box 2, and a first rack 8 is slidably installed inside the sliding box 2.

[0025] A second rack 9 is slidably installed inside the sliding box 2; the first rack 8 and the second rack 9 are meshed with the gear 7, and their ends are fixedly connected to the two adjustment rods 3 respectively, and a push rod 5 is slidably installed inside the fixed rod 4, and two clamping blocks 6 are rotatably installed on the side end of the fixed rod 4, and a drag block 11 is fixedly installed on the side end of the push rod 5.

[0026] Two slide bars 12 are slidably installed inside the drag block 11; the two slide bars 12 are rotatably connected to the two clamping blocks 6 respectively, two clamping strips 13 are symmetrically fixedly installed at both ends of the adjustment rod 3, two guide grooves 14 are symmetrically opened on both sides of the circuit breaker body 1, and a spring 15 is installed on the outer wall of the top rod 5.

[0027] Working principle:

[0028] In the first step, one of the adjusting rods 3 is pushed, and the first rack 8 or the second rack 9 connected thereto will drive the other adjusting rod 3 to slide by meshing with the gear 7, so as to adjust the distance between the two adjusting rods 3, so that the fixing rod 4 fixed at the side end of the adjusting rod 3 can slide inside the guide groove 14, so that the fixing rod 4 can be aligned with the mounting hole, and the position of the fixing rod 4 is adjusted by pulling the distance between the two adjusting rods 3, thereby achieving the effect of being able to adjust according to the position of the mounting hole.

[0029] In the second step, after the fixing rod 4 is inserted into the mounting hole, the top rod 5 is pushed to slide inside the fixing rod 4, which will push the drag block 11 to slide, and the two sliding rods 12 in the drag block 11 will push the two clamping blocks 6 to rotate. In this process, the two sliding rods 12 are pulled by the clamping blocks 6 and will slide inside the drag block 11. The inwardly sliding top rod 5 will be stuck by the clamping strip 13, and the two rotated clamping blocks 6 will be stuck to the inner wall of the main mounting hole to complete the fixation. When it needs to be removed, the clamping strip 13 is pressed downward to make the clamping strip 13 leave the top rod 5. The top rod 5 will be reset under the elastic force of the spring 15, and the clamping block 6 will be reset to complete the disassembly. By pressing the spring 15 or the clamping strip 13, the installation and disassembly of the circuit breaker are completed, achieving the effect of quick disassembly and easy maintenance.

[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A quickly detachable plastic case circuit breaker, comprising a circuit breaker body (1), characterized in that: A sliding box (2) is fixedly mounted on the side end of the circuit breaker body (1), two adjustment rods (3) are symmetrically slidably mounted on both ends of the sliding box (2), and two fixing rods (4) are symmetrically fixedly mounted on both ends of the adjustment rod (3).

2. A quick-detachable plastic case circuit breaker as claimed in claim 1, characterized in that: A gear (7) is rotatably mounted inside the sliding box (2), a first rack (8) is slidably mounted inside the sliding box (2), and a second rack (9) is slidably mounted inside the sliding box (2); The first rack (8) and the second rack (9) are meshed with the gear (7), and their ends are fixedly connected to the two adjustment rods (3) respectively.

3. A quick-detachable plastic case circuit breaker as claimed in claim 1, characterized in that: A push rod (5) is slidably mounted inside the fixing rod (4), and two clamping blocks (6) are rotatably mounted on the side ends of the fixing rod (4).

4. A quick-detachable plastic case circuit breaker as claimed in claim 3, characterized in that: A drag block (11) is fixedly mounted on the side end of the push rod (5).

5. A quick-detachable plastic case circuit breaker as claimed in claim 4, characterized in that: Two slide bars (12) are slidably mounted inside the drag block (11); The two sliding rods (12) are rotatably connected to the two clamping blocks (6) respectively.

6. A quick-detachable plastic case circuit breaker as claimed in claim 1, characterized in that: Two clamping strips (13) are symmetrically fixedly mounted on both ends of the position adjustment rod (3).

7. A quick-detachable plastic case circuit breaker as claimed in claim 1, characterized in that: Two guide grooves (14) are symmetrically provided on both sides of the circuit breaker body (1).

8. A quick-detachable plastic case circuit breaker as claimed in claim 3, characterized in that: A spring (15) is installed on the outer side wall of the push rod (5).

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