Circuit breaker alarm non-tripping structure

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker alarm non-tripping structure which comprises a first supporting piece and a second supporting piece which are fixedly installed on the two sides of the inner wall of a face cover respectively, a microswitch used for sending out alarm signals is fixedly installed on one side of the first supporting piece, and shifting rods are rotationally installed at the bottom ends of the first supporting piece and the second supporting piece. A protruding block is fixedly installed outside the shifting rod, the top end of the protruding block is arranged to be an inclined face, the protruding block abuts against the microswitch, a plurality of clamping blocks are fixedly installed at the bottom of the shifting rod, clamping grooves are formed in the clamping blocks, adjusting screws are inserted into the clamping grooves, and the adjusting screws are connected with the bimetallic strip. When the circuit breaker is overloaded, the bimetallic strip deforms, the clamping groove in the clamping block is separated from the adjusting screw, the inclined plane of the top of the external protruding block rotates after the deflector rod rotates, the button of the microswitch is pressed, then the alarm outputs an alarm signal, the function is achieved through a single cover, and part of original parts are reserved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker alarm non-tripping structure. Background Technology

[0002] In circuit breakers, overload alarm non-tripping means that only an alarm signal is issued without cutting off the circuit. The power is only disconnected after the operator closes the circuit. Currently, the structure of circuit breakers with overload alarm non-tripping generally includes a circuit breaker base and a bimetallic strip mounted on the circuit breaker base. The circuit breaker base is connected to the cover. When the circuit breaker is overloaded, the bimetallic strip will deform, thereby driving the overload alarm non-tripping device to trigger an alarm.

[0003] In the prior art, such as the patent with publication number CN211088191U, a circuit breaker with overload alarm but no tripping is disclosed, including a contact piece, a circuit board, and a bracket for fixed connection with one of the bimetallic strips. The circuit board is disposed on one side of the bracket, and a micro switch is disposed on the circuit board. The micro switch is disposed corresponding to the position of the contact piece. A slot is opened at one end of the bracket. The contact piece includes an insertion end and a working end. The insertion end is slidably disposed in the slot, and the working end is disposed corresponding to the position of the micro switch button. A fastening groove is disposed on the bracket at the position corresponding to the slot. A fastening screw is also disposed on the bracket, and the contact piece is fixed to the bracket by the fastening screw.

[0004] The above structure achieves alarm non-disengagement by connecting the toggle block to the bimetallic strip. However, in actual applications, the alarm non-disengagement structure has traditionally used a double-cover structure to achieve this function, which increases product cost and requires modification of some original parts, making installation cumbersome and inefficient. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a circuit breaker alarm non-tripping structure to solve the problems that the previous alarm non-tripping structures all used double covers to achieve this function, which increased product costs and required the modification of some original parts, resulting in cumbersome installation and low efficiency.

[0006] Based on the above objectives, this utility model provides a circuit breaker alarm non-tripping structure, including a support member one and a support member two respectively fixedly installed on both sides of the inner wall of the cover, wherein a micro switch for issuing an alarm signal is fixedly installed on one side of the support member one.

[0007] The bottom ends of the first and second support members are rotatably mounted with levers, and the outside of the levers is fixedly mounted with protrusions. The top of the protrusions is set with an inclined surface, and the protrusions abut against the micro switch.

[0008] Multiple sets of locking blocks are fixedly installed at the bottom of the lever. The locking blocks have slots inside, and adjusting screws are inserted into the slots. The adjusting screws are connected to bimetallic strips.

[0009] Preferably, a reset torsion spring is sleeved on one end of the lever, one end of the reset torsion spring is connected to one side of the support member two, and the other end of the reset torsion spring is connected to one end of the lever.

[0010] Preferably, at least three sets of the snap-fit ​​blocks are provided, and the snap-fit ​​blocks are equidistantly distributed outside the slot, with the snap-fit ​​blocks corresponding vertically to the bimetallic strip.

[0011] Preferably, the slot inside the snap-fit ​​block has a U-shaped structure, and the cross-sectional dimension of the slot is larger than that of the adjusting screw.

[0012] Preferably, an arc-shaped base block is fixedly installed on the outside of the lever, and the arc-shaped base block is fixedly connected to the snap-fit ​​block at the center. The arc-shaped base block is used to support the lever to move inside the cover.

[0013] Preferably, the interiors of both support member one and support member two are mounted on one side of the circuit breaker base by fastening screws.

[0014] The beneficial effects of this utility model are:

[0015] When the circuit breaker is overloaded, the bimetallic strip deforms, the slot inside the snap-fit ​​block separates from the adjusting screw, and the snap-fit ​​block and the lever rotate simultaneously. After the lever rotates, the top inclined surface of the outer protrusion rotates, which presses the button of the micro switch, thereby causing the alarm to output an alarm signal. This function is achieved by using a single cover, which reduces product cost, retains some original parts, and has a simple structure and is easy to install.

[0016] When it is necessary to enhance alarm accuracy, the connection between the screw and the bimetallic strip can be adjusted. Adjusting the screw shortens its length, allowing the slot in the locking block to disengage faster and the lever to rotate more quickly, thereby further enhancing the response speed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0019] Figure 2 This is a schematic diagram of the overall planar structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the micro switch and protrusion block of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the faceplate and the circuit breaker base of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the whole and the bimetallic sheet of this utility model.

[0023] The following are marked in the diagram: 1. Circuit breaker base; 2. Cover; 3. Support component one; 4. Support component two; 5. Fastening screw; 6. Lever; 7. Return torsion spring; 8. Snap-fit ​​block; 9. Slot; 10. Adjusting screw; 11. Protrusion block; 12. Microswitch; 13. Bimetallic strip; 14. Arc-shaped bottom block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a circuit breaker alarm non-tripping structure includes a support member 3 and a support member 4 respectively fixedly installed on both sides of the inner wall of the cover 2. A micro switch 12 for issuing an alarm signal is fixedly installed on one side of the support member 3.

[0026] A lever 6 is rotatably mounted on the bottom end of support member 3 and support member 4. A protrusion 11 is fixedly mounted on the outside of the lever 6. The top of the protrusion 11 is set with an inclined surface, and the protrusion 11 abuts against the micro switch 12.

[0027] Multiple sets of locking blocks 8 are fixedly installed at the bottom of the lever 6. The locking block 8 has a locking groove 9 inside, and an adjusting screw 10 is inserted into the locking groove 9. The adjusting screw 10 is connected to the bimetallic strip 13.

[0028] In this embodiment, when the circuit breaker is overloaded, the bimetallic strip 13 deforms, and the slot 9 in the locking block 8 separates from the adjusting screw 10. As a result, the locking block 8 and the lever 6 rotate simultaneously. After the lever 6 rotates, the top inclined surface of the external protrusion 11 rotates, pressing the button of the micro switch 12, thereby causing the alarm to output an alarm signal. This meets the usage requirements of special occasions and has a simple structure and is easy to install. In addition, when it is necessary to enhance the alarm accuracy, the connection between the adjusting screw 10 and the bimetallic strip 13 can be improved. The length of the adjusting screw 10 can be shortened, the slot 9 in the locking block 8 can disengage more quickly, and the lever 6 can rotate more quickly, thereby further enhancing the response speed.

[0029] As one implementation method, such as Figure 2 As shown, a reset torsion spring 7 is sleeved on one end of the lever 6. One end of the reset torsion spring 7 is connected to one side of the support member 4, and the other end of the reset torsion spring 7 is connected to one end of the lever 6.

[0030] In this embodiment, when the circuit breaker is overloaded, the bimetallic strip 13 deforms, the slot 9 in the locking block 8 separates from the adjusting screw 10, and under the action of the reset torsion spring 7 at one end of the lever 6, the locking block 8 and the lever 6 are quickly rotated at the same time. After the lever 6 rotates, the top inclined surface of the outer protrusion 11 rotates, which will press the button of the micro switch 12, thereby causing the alarm to output an alarm signal and improving the response speed.

[0031] As one implementation method, such as Figure 5 As shown, at least three sets of snap-fit ​​blocks 8 are provided. The snap-fit ​​blocks 8 are equidistantly distributed outside the snap-fit ​​slot 9, and the snap-fit ​​blocks 8 correspond vertically to the bimetallic strip 13.

[0032] In this embodiment, after the face cover 2 is installed with the circuit breaker base 1, the slot 9 in the external locking block 8 of the lever 6 corresponds to the adjusting screw 10 at the bottom of the bimetallic strip 13. Multiple sets of locking blocks 8 correspond to multiple sets of adjusting screws 10. When one set of bimetallic strips 13 deforms, the micro switch 12 is triggered.

[0033] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, the slot 9 inside the snap-fit ​​block 8 has a U-shaped structure, and the cross-sectional dimension of the slot 9 is larger than the cross-sectional dimension of the adjusting screw 10.

[0034] In this embodiment, after the face cover 2 is installed with the circuit breaker base 1, the slot 9 in the external locking block 8 of the lever 6 corresponds to the adjusting screw 10 at the bottom of the bimetallic strip 13. The adjusting screw 10 can be finely adjusted inside the slot 9 to prevent accidental contact between the face cover 2 and the circuit breaker base 1 during installation.

[0035] As one implementation method, such as Figure 3 As shown, an arc-shaped base block 14 is fixedly installed on the outside of the lever 6. The arc-shaped base block 14 is fixedly connected to the snap-fit ​​block 8 at the center. The arc-shaped base block 14 is used to support the lever 6 to move inside the cover 2.

[0036] In this embodiment, when the bimetallic strip 13 deforms, the locking block 8 and the lever 6 rotate simultaneously. The lever 6 is supported by the arc-shaped bottom block 14 at its bottom. After the lever 6 rotates inside the support member 3 and the support member 4, the top inclined surface of the protrusion 11 on its outside rotates, which will press the button of the micro switch 12, ensuring that the lever 6 rotates smoothly inside the cover 2 and ensuring that the alarm does not disengage.

[0037] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, the interiors of support member 3 and support member 4 are both installed on one side of the circuit breaker base 1 by fastening screws 5.

[0038] In this embodiment, the overall structure is installed inside the cover 2 by fastening screws 5, and the function is achieved by a single cover, which reduces product cost and does not damage some of the original parts. The installation is simple and efficient.

[0039] Working principle: When in use, first install support 3, support 4 and lever 6 inside the cover 2, ensuring that the protrusion 11 on lever 6 corresponds to the internal micro switch 12. After the cover 2 is installed with the circuit breaker base 1, the slot 9 in the external locking block 8 of lever 6 corresponds to the adjusting screw 10 at the bottom of the bimetallic strip 13, limiting the nut part of the adjusting screw 10.

[0040] When the circuit breaker is overloaded, the bimetallic strip 13 deforms, causing it to rotate simultaneously with the latching block 8 and the lever 6. After the lever 6 rotates, the top inclined surface of the outer protrusion 11 rotates, pressing the button of the micro switch 12, thereby causing the alarm to output an alarm signal, meeting the needs of special occasions. It has a simple structure and is easy to install. In addition, when it is necessary to enhance the alarm accuracy, the connection between the adjusting screw 10 and the bimetallic strip 13 can be improved. The adjusting screw 10 is shortened, the latching groove 9 in the latching block 8 disengages faster, and the lever 6 rotates faster, thereby further enhancing the response speed.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit breaker alarm trip structure, characterized by, It includes a support member 1 (3) and a support member 2 (4) that are fixedly installed on both sides of the inner wall of the cover (2). A micro switch (12) for issuing an alarm signal is fixedly installed on one side of the support member 1 (3). The bottom ends of the support member 1 (3) and support member 2 (4) are rotatably mounted with levers (6), and the outside of the levers (6) is fixedly mounted with protrusions (11). The top of the protrusions (11) is set with an inclined surface, and the protrusions (11) abut against the micro switch (12). The bottom of the lever (6) is fixedly installed with multiple sets of locking blocks (8). The locking blocks (8) have slots (9) inside. An adjusting screw (10) is inserted into the slot (9). The adjusting screw (10) is connected to the bimetallic strip (13).

2. The alarm trip structure of claim 1, wherein, One end of the lever (6) is fitted with a reset torsion spring (7), one end of the reset torsion spring (7) is connected to one side of the support member (4), and the other end of the reset torsion spring (7) is connected to one end of the lever (6).

3. The circuit breaker alarm trip structure of claim 1, wherein, At least three sets of the snap-fit ​​blocks (8) are provided. The snap-fit ​​blocks (8) are equidistantly distributed outside the slot (9), and the snap-fit ​​blocks (8) correspond vertically to the bimetallic strip (13).

4. The alarm trip structure of claim 1, wherein, The slot (9) inside the snap-fit ​​block (8) is a U-shaped structure, and the cross-sectional dimension of the slot (9) is larger than the cross-sectional dimension of the adjusting screw (10).

5. The alarm trip structure of claim 1, wherein, An arc-shaped base block (14) is fixedly installed on the outside of the lever (6). The arc-shaped base block (14) is fixedly connected to the snap-fit ​​block (8) at the center. The arc-shaped base block (14) is used to support the lever (6) to move inside the cover (2).

6. The alarm trip structure of claim 1, wherein, The interior of both support member one (3) and support member two (4) is installed on one side of the circuit breaker base (1) by fastening screws (5).

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