Adjustable tripping device of low-voltage molded case circuit breaker

Abstract

The utility model relates to the technical field of low-voltage molded case circuit breakers, and particularly discloses an adjustable tripping device of a low-voltage molded case circuit breaker, which comprises a low-voltage circuit breaker body, a tripping structure and a lower clamping block are respectively arranged on the side wall of the low-voltage circuit breaker body, and chutes are symmetrically arranged in the low-voltage circuit breaker body. The side walls of the two sliding grooves are symmetrically provided with side grooves, a through groove is formed between the two sliding grooves, adjusting mechanisms are installed in the two side grooves in a sliding mode, each adjusting mechanism comprises a side block, and connecting blocks are installed in the two sliding grooves in a sliding mode. According to the low-voltage circuit breaker tripping structure, the cross screwdriver can generate radial force on the cross groove to drive the lead screw to rotate in the storage groove, and at the moment, the rotation of the lead screw can generate threaded transmission with the sliding block, so that the whole tripping structure can be controlled to move on the low-voltage circuit breaker body; therefore, the distance between the tripping structure and the lower clamping block can be adjusted according to the height of the sliding rail, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage molded case circuit breakers, in particular to an adjustable tripping device for low-voltage molded case circuit breakers. Background Art

[0002] A low-voltage circuit breaker is a protective device used in electrical systems. It is mainly used to automatically cut off the current when an overload, short circuit or other fault occurs in the circuit, thereby protecting electrical equipment and personal safety. Low-voltage circuit breakers are usually installed in the main circuit or branch circuit of the electrical system and can be operated manually or automatically. It triggers the action of disconnecting the circuit by detecting changes in current to avoid damage or fire when the circuit is overloaded or short-circuited. Low-voltage circuit breakers are widely used in industrial, commercial and household electrical systems.

[0003] At present, the existing device (such as patent number: CN206490035U) discloses a "low-voltage circuit breaker". The device solves the problem that the existing circuit breaker does not have the function of the identification plate by setting an identification plate, a housing, a sliding rod, a first opening, a positioning tube, a first spring, a second opening, a second connecting rod, a first connecting rod, a second bracket, a first bracket, a second spring, a clamping rod and a clamping slot. The low-voltage circuit breaker has a simple structure and a long service life, and is convenient for users to distinguish different circuit breakers, and is worthy of promotion;

[0004] However, during the implementation of the above technical solution, it was found that at least the following technical problems exist: since the low-voltage circuit breaker is usually installed on a guide rail, and the heights of guide rails of different types are also different, when the device faces guide rails of different types, the tripping structure on the back of the low-voltage circuit breaker cannot be adjusted, which makes the device unable to adapt to more types of guide rails, and its applicability needs to be improved. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an adjustable tripping device for a low-voltage molded case circuit breaker, which solves the technical problem of insufficient applicability of the prior device.

[0007] (II) Technical solution

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

[0009] An adjustable tripping device for a low-voltage molded case circuit breaker comprises a low-voltage circuit breaker body, a plurality of inlet terminals are arranged inside the low-voltage circuit breaker body, a tripping structure and a lower clamping block are respectively arranged on the side walls of the low-voltage circuit breaker body, the lower clamping block is fixedly installed with the low-voltage circuit breaker body, the tripping structure is located below the lower clamping block, a sliding groove is symmetrically provided inside the low-voltage circuit breaker body, side grooves are symmetrically provided on the side walls of the two sliding grooves, and a through groove is provided between the two sliding grooves;

[0010] Adjustment mechanisms are slidably installed inside the two side grooves;

[0011] The adjustment mechanism includes a side block, and connecting blocks are slidably installed inside the two slide grooves. The two side blocks are fixedly installed with the connecting blocks. The two side blocks are located outside the connecting blocks. The adjustment mechanism also includes a connecting rod, a storage groove, a screw rod, a cross groove and a sliding block.

[0012] Preferably: the two connecting blocks are fixedly mounted on the tripping structure, the connecting rod is located between the connecting blocks, the connecting rod is fixedly mounted on the connecting blocks, the connecting rod is slidably mounted on the through slot, and the storage slot is opened on the inner wall of the through slot.

[0013] Preferably, the screw rod is located inside the storage slot, the screw rod and the storage slot are rotatably mounted, the screw rod is partially exposed above the low-voltage circuit breaker body, and the cross groove is opened inside the screw rod.

[0014] Preferably, the sliding block is located on the circumferential surface of the screw rod, the sliding block is threadedly mounted on the screw rod, the sliding block is slidably mounted on the storage groove, and the sliding block is fixedly mounted on the connecting rod.

[0015] (III) Beneficial effects

[0016] 1. By inserting a cross screwdriver into the cross slot and rotating it, the cross screwdriver can generate a radial force on the cross slot to drive the screw rod to rotate in the storage slot. At this time, the rotation of the screw rod will generate threaded transmission with the sliding block, so that the connecting rod drives the connecting block to move together, so that the overall movement of the tripping structure on the low-voltage circuit breaker body can be controlled, and the distance between the tripping structure and the lower clamping block can be adjusted according to the height of the slide rail, thereby improving applicability;

[0017] Second, when the lead screw and the sliding block are threadedly transmitted, the sliding block will move upward in the storage groove. Since the sliding block is fixedly installed with the connecting rod, the movement of the sliding block will also drive the connecting rod, the connecting block and the side block to slide in the through groove, the sliding groove and the side groove respectively, thereby providing multi-directional limit and increasing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 2 It is a three-dimensional exploded structural diagram of the utility model;

[0021] Figure 3 This is a cross-sectional view of the low-voltage circuit breaker body of the utility model;

[0022] Figure 4 This is an exploded structural diagram of the connecting rod connection of the utility model.

[0023] Legend: 11. Low-voltage circuit breaker body; 12. Inlet terminal; 13. Tripping structure; 14. Lower clamping block; 15. Slide groove; 16. Side groove; 17. Through groove; 18. Side block; 19. Connecting block; 21. Connecting rod; 22. Storage groove; 23. Screw rod; 24. Cross groove; 25. Sliding block. DETAILED DESCRIPTION

[0024] The embodiment of the present application effectively solves the technical problem of insufficient applicability of the existing device by providing an adjustable tripping device for a low-voltage molded case circuit breaker. By inserting and rotating a cross screwdriver into the cross slot, the cross screwdriver can generate a radial force on the cross slot to drive the screw rod to rotate in the storage slot. At this time, the rotation of the screw rod will undergo threaded transmission with the sliding block, and then the connecting rod drives the connecting block to move together, so that the overall movement of the tripping structure on the low-voltage circuit breaker body can be controlled, and the distance between the tripping structure and the lower clamping block can be adjusted according to the height of the slide rail, thereby improving applicability. When the screw rod and the sliding block undergo threaded transmission, the sliding block will move upward in the storage slot, and since the sliding block is fixedly installed with the connecting rod, the movement of the sliding block will also drive the connecting rod, the connecting block and the side block to slide in the through slot, the slide slot and the side slot respectively, thereby providing multiple limit positions and increasing stability.

[0025] Example

[0026] like Figure 1-Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem of insufficient applicability of the existing device, and the overall idea is as follows:

[0027] In view of the problems existing in the prior art, the utility model provides an adjustable tripping device for a low-voltage molded case circuit breaker, comprising a low-voltage circuit breaker body 11, a plurality of inlet terminals 12 are arranged inside the low-voltage circuit breaker body 11, a tripping structure 13 and a lower clamping block 14 are respectively arranged on the side walls of the low-voltage circuit breaker body 11, the lower clamping block 14 is fixedly installed with the low-voltage circuit breaker body 11, the tripping structure 13 is located below the lower clamping block 14, and slidable grooves 15 are symmetrically arranged inside the low-voltage circuit breaker body 11, side grooves 16 are symmetrically arranged on the side walls of the two slidable grooves 15, and a through groove 17 is arranged between the two slidable grooves 15;

[0028] Adjustment mechanisms are slidably mounted inside the two side grooves 16;

[0029] The adjusting mechanism includes a side block 18, and a connecting block 19 is slidably installed inside the two slide grooves 15. The two side blocks 18 are fixedly installed with the connecting block 19, and the two side blocks 18 are located outside the connecting block 19. The adjusting mechanism also includes a connecting rod 21, a storage groove 22, a screw rod 23, a cross groove 24 and a sliding block 25. By inserting and rotating a cross screwdriver into the cross groove 24, the cross screwdriver can generate a radial force on the cross groove 24 to drive the screw rod 23 to rotate in the storage groove 22. At this time, the rotation of the screw rod 23 will be threaded with the sliding block 25, and then The connecting rod 21 drives the connecting block 19 to move together, so that the tripping structure 13 can be controlled to move on the low-voltage circuit breaker body 11 as a whole, and then the distance between the tripping structure 13 and the lower clamping block 14 can be adjusted according to the height of the slide rail, thereby improving applicability. By setting the adjustment mechanism, not only can the tripping structure 13 be adjusted according to the height of the slide rail, but even if the tripping structure 13 is damaged, the tripping structure 13 can be driven to descend by controlling the adjustment mechanism, so that the tripping structure 13 and the lower clamping block 14 clamp the slide rail, thereby further improving applicability.

[0030] The two connecting blocks 19 are fixedly installed with the tripping structure 13, the connecting rod 21 is located between the connecting blocks 19, the connecting rod 21 is fixedly installed with the connecting block 19, the connecting rod 21 is slidably installed with the through slot 17, the storage slot 22 is opened on the inner wall of the through slot 17, the screw rod 23 is located inside the storage slot 22, the screw rod 23 is rotatably installed with the storage slot 22, the screw rod 23 is partially exposed above the low-voltage circuit breaker body 11, the cross groove 24 is opened inside the screw rod 23, the sliding block 25 is located on the circumferential surface of the screw rod 23, and the sliding block 25 is rotatably installed with the screw rod 2 3 threaded installation, the sliding block 25 is slidably installed with the storage groove 22, and the sliding block 25 is fixedly installed with the connecting rod 21. When the screw rod 23 and the sliding block 25 are threadedly driven, the sliding block 25 will move upward in the storage groove 22, and because the sliding block 25 is fixedly installed with the connecting rod 21, the movement of the sliding block 25 will also drive the connecting rod 21, the connecting block 19 and the side block 18 to slide in the through groove 17, the sliding groove 15 and the side groove 16 respectively, so as to provide multiple limit positions and increase stability.

[0031] Working principle:

[0032] In the first step, when the low-voltage circuit breaker body 11 needs to be installed, the pull rod of the tripping structure 13 can be pulled upwards first, and then the tripping structure 13 and the lower clamping block 14 can be aligned with the guide rail and slid in. If the distance between the tripping structure 13 (the tripping structure 13 is an existing structure, composed of a housing, a spring, a pull rod, and a clamping plate) and the lower clamping block 14 is not enough to slide into the guide rail, first a cross screwdriver can be inserted into the cross slot 24 and rotated, so that the cross screwdriver generates a radial force on the cross slot 24 to drive the screw rod 23 to rotate in the storage slot 22, and the rotation of the screw rod 23 will generate threaded transmission with the sliding block 25;

[0033] In the second step, the sliding block 25 will move upward in the storage groove 22, and since the sliding block 25 is fixedly installed with the connecting rod 21, the movement of the sliding block 25 will also drive the connecting rod 21, the connecting block 19 and the side block 18 to slide in the through groove 17, the slide groove 15 and the side groove 16 respectively, so that the connecting block 19 drives the tripping structure 13 to move as a whole on the low-voltage circuit breaker body 11, so that the distance between the tripping structure 13 and the lower clamping block 14 becomes larger. When the tripping structure 13 is adjusted to a suitable position according to the height of the slide rail, the rotation of the cross groove 24 can be stopped at this time, and then the pull rod of the tripping structure 13 can be pulled again to align the tripping structure 13 and the lower clamping block 14 and slide them into the guide rail. After moving to a suitable position on the guide rail, the pull rod of the tripping structure 13 can be stopped at this time, so that the clamping block in the tripping structure 13 is clamped in the guide rail, and then the staff can connect the required wires into the incoming terminal 12 of the low-voltage circuit breaker body 11.

[0034] 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. An adjustable tripping device for a low-voltage molded case circuit breaker, comprising a low-voltage circuit breaker body (11), wherein a plurality of inlet terminals (12) are arranged inside the low-voltage circuit breaker body (11), and a tripping structure (13) and a lower clamping block (14) are respectively arranged on the side walls of the low-voltage circuit breaker body (11), wherein the lower clamping block (14) is fixedly installed with the low-voltage circuit breaker body (11), characterized in that: The low-voltage circuit breaker body (11) is symmetrically provided with sliding grooves (15), the side walls of the two sliding grooves (15) are symmetrically provided with side grooves (16), and a through groove (17) is provided between the two sliding grooves (15); Adjustment mechanisms are slidably mounted inside the two side grooves (16); The adjustment mechanism comprises a side block (18), a connecting block (19) is slidably mounted inside the two slide grooves (15), and the two side blocks (18) are fixedly mounted on the connecting block (19).

2. The adjustable tripping device of a low voltage molded case circuit breaker according to claim 1, characterized in that: The adjustment mechanism further comprises a connecting rod (21), a storage slot (22), a screw rod (23), a cross slot (24) and a sliding block (25); Wherein, the two connection blocks (19) are both fixedly mounted on the tripping structure (13).

3. The adjustable tripping device of a low voltage molded case circuit breaker according to claim 2, characterized in that: The connecting rod (21) is located between the connecting blocks (19); Wherein, the connecting rod (21) is fixedly mounted on the connecting block (19).

4. The adjustable tripping device of a low voltage molded case circuit breaker according to claim 3, characterized in that: The connecting rod (21) is slidably mounted on the through groove (17); Wherein, the storage groove (22) is opened on the inner wall of the through groove (17).

5. The adjustable tripping device of a low voltage molded case circuit breaker according to claim 4, characterized in that: The screw rod (23) is located inside the storage groove (22); Wherein, the screw rod (23) is rotatably mounted on the storage groove (22).

6. The adjustable tripping device for a low voltage molded case circuit breaker according to claim 5, characterized in that: The screw rod (23) is partially exposed above the low-voltage circuit breaker body (11); Wherein, the cross groove (24) is arranged inside the screw rod (23).

7. An adjustable tripping device for a low voltage molded case circuit breaker according to claim 6, characterized in that: The sliding block (25) is located on the circumferential surface of the screw rod (23); Wherein, the sliding block (25) is threadedly mounted on the screw rod (23).

8. The adjustable tripping device of a low voltage molded case circuit breaker according to claim 7, characterized in that: The sliding block (25) is slidably mounted on the storage slot (22); Wherein, the sliding block (25) and the connecting rod (21) are fixedly installed.

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