Mechanism for preventing false switching-on of circuit breaker
By designing an anti-closing and error removal mechanism in the plug-in circuit breaker, the circuit breaker is locked and unlocked by the cooperation of the handle, connecting rod and spring, the safety hazards of error removal in the closing state are solved and the circuit breaker is safe. Lock and fast unlock.
Patent Information
- Application Number
- CN202420187530.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-25
AI Technical Summary
Existing plug-in circuit breakers are easily removed by mistake when closed and powered on, which poses safety hazards.
An anti-closing and error removal mechanism is designed, including a housing, a handle, a rotating member, a connecting rod, a locking mechanism and a spring. The connecting rod is driven to lift the locking mechanism through the handle, and the protrusion of the locking mechanism extends out of the housing locking circuit breaker. , the spring action is reduced and unlocked to avoid mistakenly pulling.
Lock the circuit breaker in the closed state to prevent mistaken removal, ensure safety, and quickly unlock it when the gate is opened, eliminating safety hazards.
Smart Images
Figure CN222338205U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a circuit breaker anti-closing mis-pulling mechanism. Background Art
[0002] Molded case circuit breakers are divided into three types according to the installation method: plug-in type, fixed type and withdrawable type. The use of plug-in circuit breakers can effectively improve the safety of the electrical equipment use industry, and plug-in circuit breakers are widely used on various electrical equipment. In existing plug-in circuit breakers, it is usually a certain safety hazard to pull out the circuit breaker when the circuit breaker is closed and energized. Utility Model Content
[0003] In view of the above problems, the purpose of the utility model is to provide a locking mechanism for a circuit breaker which avoids accidental removal in a live closed state and ensures safety.
[0004] The utility model is realized by the following technical solutions:
[0005] A circuit breaker anti-mis-closing and mis-pulling mechanism comprises a circuit breaker housing, a handle rotatably mounted on the housing, a rotating member movably mounted on the housing, and a connecting rod movably connecting the handle and the rotating member (all of the above are prior arts), the anti-mis-closing and mis-pulling mechanism also comprises a locking mechanism slidably arranged in the housing and a spring installed between the housing and the locking mechanism; a notch is arranged on the top of the housing; a notch with an arc surface is arranged on the locking mechanism; the arc surface of the notch contacts the connecting rod; a protrusion corresponding to the notch of the housing is arranged on the locking mechanism; the notch on the top of the housing is square or circular; the top of the spring is mounted on the upper inner wall of the housing, and the bottom of the spring is mounted on the locking mechanism; in order to prevent the spring from deviating from the installation position and causing the mechanism to fail, cylindrical protrusions are arranged at the contact points between the spring and the housing and the locking mechanism; the spring is sleeved on the cylindrical protrusion.
[0006] Beneficial effects of the utility model:
[0007] The utility model discloses that when the circuit breaker is in the closed state, the handle drives the connecting rod to lift the locking mechanism, and the protrusion on the locking mechanism extends out of the shell to lock the shell on the mounting frame; when the circuit breaker is opened, the handle drives the connecting rod, and the locking mechanism drops back to the original position due to the action of the spring to realize unlocking, which is convenient and quick, and eliminates the safety hazard of pulling out the circuit breaker under power. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0009] Figure 1 It is a front cross-sectional view of the open state.
[0010] Figure 2 It is a rear cross-sectional view of the open state.
[0011] Figure 3 It is a front cross-sectional view of the closed state.
[0012] Figure 4 It is a structural schematic diagram of the locking mechanism described in the utility model.
[0013] As shown in the figure: 1-housing; 2-handle; 3-locking mechanism; 4-connecting rod; 5-rotating part; 6-spring. DETAILED DESCRIPTION
[0014] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0015] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.
[0016] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0017] like Figure 1-Figure 4 The circuit breaker anti-misclosing mechanism shown comprises a housing 1, a handle 2, a locking mechanism 3, a connecting rod 4, a rotating part 5, and a spring 6.
[0018] The housing 1 is a conventional circuit breaker housing, and is provided with a plurality of rotating cylinders and grooves for placing components inside, and a square or circular notch is provided on the top of the housing 1.
[0019] The handle 2 is a conventional component in a circuit breaker, rotatably mounted on the housing 1, and is used to control the closing and opening of the circuit breaker.
[0020] The rotating member 5 is a conventional component in the circuit breaker and is rotatably mounted on the housing 1. One end of the rotating member 5 is linked to the operating mechanism of the circuit breaker, and the other end is connected to the handle 2 through the connecting rod 4. The rotating member 5 is driven to rotate by rotating the handle 2, thereby driving the circuit breaker operating mechanism to perform opening and closing operations.
[0021] The locking mechanism 3 is slidably mounted on the shell 1 and can slide up and down along the inner groove of the shell 1; a notch 31 with an arc surface is provided on the locking mechanism 3; the arc surface of the notch 31 contacts the connecting rod 4, and when the connecting rod 4 is subjected to an upward force from the handle, the connecting rod 4 contacts the arc surface of the notch 31 and drives the locking mechanism 3 to move upward; a protrusion 32 corresponding to the notch of the shell 1 is provided on the locking mechanism 3, and the protrusion 32 is used to extend out of the shell 1 and get stuck on the inner wall of the frame after insertion, so that the circuit breaker cannot be pulled out when the circuit breaker is closed.
[0022] The top of the spring 6 is installed on the inner wall of the shell 1, and the bottom of the spring 6 is installed on the locking mechanism 3; the contact points between the spring 6 and the shell 1 and the locking mechanism 3 are all provided with cylindrical protrusions; the spring 6 is sleeved on the cylindrical protrusion; the spring 6 is used to reset the locking mechanism 3 when the gate is opened.
[0023] The working principle of the utility model is:
[0024] After the circuit breaker is inserted into the switch cabinet, when it is to be closed, the handle 2 is turned counterclockwise to drive the connecting rod 4 to move upward. After the connecting rod 4 contacts the arc surface of the notch 31, it drives the locking mechanism 3 to move upward. The protrusion 32 on the locking mechanism 3 extends out of the notch at the top of the shell 1, and the circuit breaker is locked in the installed body; when opening the circuit breaker, the handle 2 is turned clockwise to drive the connecting rod 4 to move downward. After the connecting rod 4 is out of contact with the arc surface of the notch 31, the locking mechanism 3 returns to its original position under the elastic force of the spring 6, and the protrusion 32 on the locking mechanism 3 retracts into the shell 1 to achieve unlocking.
[0025] The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A circuit breaker anti-closing mis-pulling mechanism, comprising a circuit breaker housing (1), a handle (2) rotatably mounted on the housing (1), a rotating member (5) movably mounted on the housing (1), and a connecting rod (4) movably connecting the handle (2) and the rotating member (5), characterized in that : It also includes a locking mechanism (3) slidably arranged in the housing (1) and a spring (6) installed between the housing (1) and the locking mechanism (3); the housing (1) is provided with a notch at the top; the locking mechanism (3) is provided with a notch (31) with an arc surface; the arc surface of the notch (31) is in contact with the connecting rod (4); the locking mechanism (3) is provided with a protrusion (32) corresponding to the notch of the housing (1).
2. The circuit breaker anti-closing mis-pulling mechanism according to claim 1 is characterized in that The notch on the top of the shell (1) is square or circular.
3. The circuit breaker anti-closing mis-pulling mechanism according to claim 1 is characterized in that The top of the spring (6) contacts the upper inner wall of the housing (1), and the bottom of the spring (6) contacts the locking mechanism (3).
4. The circuit breaker anti-closing mis-pulling mechanism according to claim 3 is characterized in that The spring (6) is provided with cylindrical protrusions at the contact points with the housing (1) and the locking mechanism (3); the spring (6) is sleeved on the cylindrical protrusions.