Overcurrent protection circuit and power equipment
By adopting an integral sliding engagement clamping block structure in the overcurrent protector, the problem of the overcurrent protector being easily broken during disassembly and assembly in the prior art is solved, and a more stable connection structure and a longer service life are achieved.
Patent Information
- Application Number
- CN202420164422.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-01-23
AI Technical Summary
Existing overcurrent protectors are prone to breaking during continuous disassembly and assembly, resulting in unstable connection structure.
The clamping block structure is adopted with an integral sliding engagement, and the clamping groove is stablely engaged by the cooperation of the sliding positioning block and the limiting spring to avoid breakage.
It effectively prevents fracture problems caused by continuous disassembly and assembly, and improves the stability and service life of the connecting structure.
Smart Images
Figure CN222814226U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an overcurrent protection circuit and electric power equipment, belonging to the field of electric power equipment. Background Art
[0002] The overcurrent protector is a device used for current overload protection. When it enters the setting state, the relay in the protection will be automatically released, and the protector will exit the protection state, effectively preventing the motor from being misoperated in the setting state. It can be widely used in the protection and monitoring of industrial three-phase motors and other electrical appliances in the machinery, metallurgy, building materials, chemical industry, textile industry, etc. The existing overcurrent protector has a structure for connecting and clamping positioning, which is a clamping piece set in the clamping groove and clamped by a spring. As the test work progresses, it is constantly disassembled and assembled, which is prone to breakage. Utility Model Content
[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an overcurrent protection circuit and power equipment to solve the problem that the existing overcurrent protector, whose structure for connection, clamping and positioning is provided with a clamping piece in the clamping groove and is engaged by a spring telescopic clamp, is constantly disassembled and assembled as the test work proceeds, and is prone to breakage.
[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: an electrical equipment of an overcurrent protection circuit, whose structure includes an overcurrent protector body, an integrally formed fixed block is provided on the right lower end of the overcurrent protector body shell, a clamping block is movably provided on the left lower end of the overcurrent protector body shell, a clamping groove is formed between the clamping block and the fixed block, a snap-fit block is provided on the end face of the clamping block facing the fixed block, a sliding positioning block is provided on the upper end of the clamping block, a sliding groove is provided on the bottom surface of the overcurrent protector body shell that is slidably connected to the sliding positioning block, and a limit spring is provided between the sliding positioning block and the inner wall on one side of the sliding groove.
[0005] Furthermore, the sliding positioning block and the clamping block are an integrated structure.
[0006] Furthermore, the sliding positioning block and the sliding groove are both T-shaped structures.
[0007] Furthermore, a groove is provided on the bottom surface of the clamping block.
[0008] Furthermore, the overcurrent protection circuit applied to the power equipment of the overcurrent protection circuit includes: a current sensor, which is used to detect the size of the current flowing; a current value module, which sets a current value as a trigger point in the overcurrent protection circuit, and when the current exceeds the value, the protection circuit will be activated; a comparator, which is a comparator usually used by the overcurrent protection circuit to compare the relationship between the current value output by the sensor and the set value; a trigger module, which is a comparator that triggers a signal when the current exceeds the set value, and this signal will trigger the corresponding protection measures; a cut-off switch, which is a cut-off switch that will be operated when the protection circuit is triggered to cut off the flow of current, thereby preventing the further transmission of excessive current; a reset module, which is a reset module that once the overcurrent protection circuit is triggered, there must be a way to reset the circuit so that it can continue to work. This can be achieved manually or automatically; a response module, which is the ability of the overcurrent protection circuit to respond quickly so that the circuit can be cut off immediately when the current exceeds the limit to avoid damage.
[0009] The beneficial effect of the utility model is that the overcurrent protector adopts an integrally slidably engaged clamping block, which effectively prevents breakage caused by continuous disassembly and assembly. When in use, the clamping block is first slid, and the clamping block drives the sliding positioning block to slide in the slide groove. The limit spring is compressed to produce deformation, and the diameter of the clamping groove becomes larger. Then the clamping groove is sleeved on the connection, and then the clamping block is released. As the limit spring rebounds, the clamping block drives the engaging block to be engaged in the clamping groove of the connection, completing the installation work, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0011] Figure 1 This is a schematic diagram of the structure of an electric power device of an overcurrent protection circuit of the utility model;
[0012] Figure 2 The utility model is a partial cross-sectional structural schematic diagram of an electric power device of an overcurrent protection circuit. DETAILED DESCRIPTION
[0013] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0014] See also Figure 1 , Figure 2The utility model provides a technical solution for an overcurrent protection circuit and an electric power equipment: its structure includes an overcurrent protector body 1, an integrally formed fixed block 2 is provided at the right lower end of the shell of the overcurrent protector body 1, a clamping block 3 is movably provided at the left lower end of the shell of the overcurrent protector body 1, a clamping groove 4 is formed between the clamping block 3 and the fixed block 2, a clamping block 5 is provided at the end face of the clamping block 3 facing the fixed block 2, a sliding positioning block 6 is provided at the upper end of the clamping block 3, a sliding groove 7 slidably connected to the sliding positioning block 6 is provided on the bottom surface of the shell of the overcurrent protector body 1, a limiting spring 8 is provided between the sliding positioning block 6 and the inner wall of one side of the sliding positioning block 6, the sliding positioning block 6 and the clamping block 3 are an integrated structure, the sliding positioning block 6 and the sliding groove 7 are both T-shaped structures, and a drawing groove is provided on the bottom surface of the clamping block 3. The protection circuit includes: a current sensor, which is used to detect the size of the current flowing; a current value module, which sets a current value as a trigger point in the overcurrent protection circuit, and when the current exceeds this value, the protection circuit will be activated; a comparator, which is a comparator usually used by the overcurrent protection circuit to compare the relationship between the current value output by the sensor and the set value; a trigger module, which is a comparator that triggers a signal when the current exceeds the set value, and this signal will trigger the corresponding protection measures; a cut-off switch, which is a cut-off switch that will be operated when the protection circuit is triggered to cut off the flow of current, thereby preventing the further transmission of excessive current; a reset module, which is a reset module that once the overcurrent protection circuit is triggered, there must be a way to reset the circuit so that it can continue to work. This can be achieved manually or automatically; a response module, which is an overcurrent protection circuit that needs to have the ability to respond quickly so that the circuit can be cut off immediately when the current exceeds the limit to avoid damage.
[0015] The overcurrent protector adopts an integrally sliding clamping block 3, which effectively prevents breakage caused by continuous disassembly and assembly. When in use, first slide the clamping block 3, and the clamping block 3 drives the sliding positioning block 6 to slide in the slide groove 7. The limit spring 8 is compressed and deformed, and the diameter of the clamping groove 4 becomes larger. Then, the clamping groove 4 is sleeved on the connection, and then the clamping block 3 is released. As the limit spring 8 rebounds, the clamping block 3 drives the locking block 5 to snap into the slot at the connection, completing the installation work, and the operation is convenient.
[0016] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0017] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An electric power device with an overcurrent protection circuit, characterized in that: The structure comprises an overcurrent protector body (1), wherein the right part of the lower end of the shell of the overcurrent protector body (1) is provided with an integrally formed fixed block (2), the left part of the lower end of the shell of the overcurrent protector body (1) is movably provided with a clamping block (3), a clamping groove (4) is formed between the clamping block (3) and the fixed block (2), a snap-fit block (5) is provided on the end surface of the clamping block (3) facing the fixed block (2), a sliding positioning block (6) is provided on the upper end of the clamping block (3), a sliding groove (7) slidably connected to the sliding positioning block (6) is provided on the bottom surface of the shell of the overcurrent protector body (1), and a limit spring (8) is provided between the sliding positioning block (6) and the inner wall of one side of the sliding groove (7).
2. The power equipment of the overcurrent protection circuit according to claim 1, characterized in that: The sliding positioning block (6) and the clamping block (3) are an integrated structure.
3. The electric power equipment of the overcurrent protection circuit according to claim 1, characterized in that: The sliding positioning block (6) and the sliding groove (7) are both T-shaped structures.
4. The electric power equipment of the overcurrent protection circuit according to claim 1, characterized in that: The bottom surface of the clamping block (3) is provided with a drawing groove.