Rotating support for molded case circuit breaker
By introducing a fixed frame, rotating shaft, locking block, and hook into the rotating bracket of the molded case circuit breaker, the problems of wear and thermal expansion and contraction caused by the plastic structure of the rotating bracket are solved, thereby improving the stability and lifespan of the equipment.
Patent Information
- Application Number
- CN202423249096.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The rotating brackets of existing molded case circuit breakers are usually made of plastic, which leads to thermal expansion and contraction and wear under long-term use and high temperature, affecting the life of the equipment.
A structure including a fixed frame, a rotating shaft, a rotating bracket, a fixed plate, and a slot is designed. The design of the locking block and hook part reduces wear and prevents thermal expansion and contraction. Metal materials are used to enhance stability.
It effectively reduces wear on the rotating bracket, prevents thermal expansion and contraction, and improves the service life and stability of the molded case circuit breaker.
Smart Images
Figure CN223665387U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a circuit breaker technical field, concretely is a rotating support for molded case circuit breaker. BACKGROUND
[0002] Molded case circuit breaker is widely used in industry and agriculture, transportation, mine, civil building and national defense department, plays a big role to power transmission and distribution, motor protection, is the product of large use, wide use in low voltage electrical apparatus. Molded case circuit breaker is the switching device that can close, carry and open the current under normal circuit condition, and can close, carry and open the current under abnormal circuit condition (including short circuit condition) within the stipulated time. Molded case circuit breaker can be used to distribute electric energy, infrequently start asynchronous motor, and carry out protection to power line and motor, and can automatically cut off the circuit when they occur serious overload or short circuit and under voltage fault.
[0003] However, the rotating support in the prior art is usually installed in the molded case circuit breaker, and the rotating support on the market adopts a plastic structure, which leads to certain changes of the rotating support affected by long-time use and high temperature, such as thermal expansion and contraction of the rotating support, and wear between the rotating and the iron fitting, thereby affecting the service life of the molded case circuit breaker. SUMMARY
[0004] The utility model discloses a rotating support for molded case circuit breaker, to solve the rotating support in prior art mentioned in above background art is usually installed in the molded case circuit breaker, and the rotating support on the market adopts a plastic structure, which leads to certain changes of the rotating support affected by long-time use and high temperature, such as thermal expansion and contraction of the rotating support, and wear between the rotating and the iron fitting, thereby affecting the service life of the molded case circuit breaker.
[0005] To realize above-mentioned purpose, the utility model provides following technical scheme: a rotating support for molded case circuit breaker, including fixed frame, the fixed frame is located at the front end and is fixedly connected with the rotating shaft in, the rotating shaft is rotationally connected with the rotating support on, the rotating support includes fixed frame, connecting arm and fixed plate, the fixed frame is located at the top and is fixedly connected with the connecting arm in, the connecting arm surface is set with the clamping groove, the clamping groove is connected with the fixed plate.
[0006] Preferably, the fixed plate rear end surface is fixedly connected with the downward bending clamping block, and the fixed plate front end surface is fixedly connected with the hook part.
[0007] Preferably, the hook part includes a connecting plate and a connecting hook, the connecting plate is fixedly connected to the front end surface of the fixed plate, and the connecting plate bottom surface is fixedly connected with the connecting hook on both sides.
[0008] Preferably, the clamping block is clamped in the clamping groove.
[0009] Preferably, a rotating hole is arranged in the connecting arm, the connecting arm is rotatably connected with the rotating shaft through the rotating hole, and semicircular openings are arranged on the surface of the connecting arm.
[0010] Preferably, a connecting groove is arranged on the surface of the semicircular opening in the opposite position of the connecting hook, and the connecting hook is clamped in the connecting groove.
[0011] Preferably, the inner wall of the connecting hook is in contact with the surface of the outer wall of the rotating shaft.
[0012] Advantages
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] The utility model discloses a fixing plate is arranged between the rotating support and the iron piece, thereby reducing the abrasion during the rotation of the rotating support, and the clamping block is clamped in the clamping groove, and the hook part is clamped in the fixing plate, so that the thermal expansion and cold shrinkage of the rotating support can be effectively prevented. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the whole structure schematic diagram of the utility model;
[0016] Figure 2 It is the fixed frame structure schematic diagram of the utility model;
[0017] Figure 3 It is the rotating support and rotating shaft cooperation structure schematic diagram of the utility model;
[0018] Figure 4 It is the fixed plate structure schematic diagram of the utility model;
[0019] Figure 5 It is the rotating support structure schematic diagram of the utility model.
[0020] The corresponding relationship between the annotations of the drawings and the component names in the drawings is as follows:
[0021] 1. fixed frame;2. rotating support;11. rotating shaft;21. fixed frame;22. connecting arm;23. fixed plate;
[0022] 24. clamping block;25. hook part;221. rotating hole;222. semicircular opening;223. clamping groove;224. connecting groove;251. connecting plate;252. connecting hook. DETAILED DESCRIPTION
[0023] The technical solutions of the utility model will be clearly and completely described below in connection with the embodiments, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.
[0024] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "vertical", "horizontal" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and therefore are not understood as the limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.
[0025] As Figures 1-5 It is a structure schematic view of a rotating support for molded case circuit breaker, and in the embodiment, the rotating support for molded case circuit breaker comprises a fixed frame 1, a rotating shaft 11 is fixedly connected at the front end in the fixed frame 1, a rotating support 2 is rotatably connected on the rotating shaft 11, and the rotating support 2 comprises a fixed frame 21, a connecting arm 22 and a fixed plate 23, the connecting arm 22 is fixedly connected at the top in the fixed frame 21, and the connecting arm 22 is provided with a clamping groove 223 on the surface, and the fixed plate 23 is clamped in the clamping groove 223.
[0026] In the embodiment, the fixed plate 23 is fixedly connected with a downwardly bent clamping block 24 at the rear end surface, and a hook part 25 is fixedly connected at the front end surface of the fixed plate 23.
[0027] In the embodiment, the hook part 25 comprises a connecting plate 251 and a connecting hook 252, the connecting plate 251 is fixedly connected at the front end surface of the fixed plate 23, and the connecting hook 252 is fixedly connected at the bottom surface of the connecting plate 251 on both sides.
[0028] In the embodiment, the clamping block 24 is clamped in the clamping groove 223, and the structure plays a limiting role and also plays a mounting guiding function.
[0029] In this embodiment, a rotating hole 221 is provided in the connecting arm 22. The connecting arm 22 is rotatably connected to the rotating shaft 11 through the rotating hole 221. Semicircular openings 222 are provided on both sides of the surface of the connecting arm 22. A connecting groove 224 is provided on the surface of the semicircular opening 222 at the opposite position of the connecting hook 252. The connecting hook 252 is engaged in the connecting groove 224. By engaging the connecting hook 252 in the connecting groove 224, the phenomenon of thermal expansion and contraction of the rotating bracket 2 can be effectively prevented.
[0030] In this embodiment, the inner wall of the connecting hook 252 is in contact with the outer wall surface of the rotating shaft 11. This structural design makes the inner wall plane of the connecting hook 252 and the semi-circular opening 22 at the same level, which facilitates the rotation of the rotating bracket 2.
[0031] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.
Claims
1. A rotating bracket for a molded case circuit breaker, comprising a fixed frame (1), characterized in that: A rotating shaft (11) is fixedly connected to the front end of the fixed frame (1). A rotating bracket (2) is rotatably connected to the rotating shaft (11). The rotating bracket (2) includes a fixed frame (21), a connecting arm (22), and a fixed plate (23). The connecting arm (22) is fixedly connected to the top of the fixed frame (21). A slot (223) is opened on the surface of the connecting arm (22). The fixed plate (23) is engaged in the slot (223).
2. The rotating bracket for a molded case circuit breaker according to claim 1, characterized in that: The rear end surface of the fixing plate (23) is fixedly connected to a downwardly bent clip (24), and the front end surface of the fixing plate (23) is fixedly connected to a hook (25).
3. The rotating bracket for a molded case circuit breaker according to claim 2, characterized in that: The hook part (25) includes a connecting plate (251) and a connecting hook (252). The connecting plate (251) is fixedly connected to the front end surface of the fixing plate (23), and the bottom surface of the connecting plate (251) is fixedly connected to the connecting hooks (252) on both sides.
4. The rotating bracket for a molded case circuit breaker according to claim 2, characterized in that: The card block (24) is engaged in the card slot (223).
5. The rotating bracket for a molded case circuit breaker according to claim 1, characterized in that: The connecting arm (22) has a rotating hole (221) inside, and the connecting arm (22) is rotatably connected to the rotating shaft (11) through the rotating hole (221). The connecting arm (22) has semi-circular openings (222) on both sides of its surface.
6. The rotating bracket for a molded case circuit breaker according to claim 5, characterized in that: The surface of the semi-circular opening (222) is provided with a connecting groove (224) at the position opposite to the connecting hook (252), and the connecting hook (252) is engaged in the connecting groove (224).
7. The rotating bracket for a molded case circuit breaker according to claim 6, characterized in that: The inner wall of the connecting hook (252) is in contact with the outer wall surface of the rotating shaft (11).