Rotary power switch actuating mechanism
By designing a steel ball and an arc-shaped constraint groove in the rotary power switch actuator, and using electromagnetic force to limit the downward movement of the moving block, the problem of sudden tripping of vacuum circuit breakers during current fluctuations was solved, and stable closing and opening actions of the switch were achieved.
Patent Information
- Application Number
- CN202520054581.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The actuator of existing vacuum circuit breakers is prone to tripping under current fluctuations, leading to unstable switching.
A rotary power switch actuator was designed. Through the cooperation of a steel ball and an arc-shaped constraint groove, electromagnetic force is used to move the moving block upward when closing the circuit and restrict its downward movement to prevent unauthorized tripping. When opening the circuit, the restriction is released to complete the action.
This effectively prevents the vacuum circuit breaker from tripping unexpectedly due to current fluctuations after closing, thus improving the stability and reliability of the switch.
Smart Images
Figure CN223728675U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power switch technical field more specifically, relate to a rotary power switch actuating mechanism. BACKGROUND
[0002] Vacuum circuit breaker is the short name of vacuum arc extinguishing circuit breaker, also known as arc extinguishing can occur in vacuum medium circuit breaker. Its working principle is: when the dynamic, static contact of vacuum circuit breaker under the action of operating mechanism, the arc between the contacts, the contact surface emits steam under high temperature. Because the contact is designed as a special shape, a magnetic field is generated when the current passes through, and the arc moves along the tangent direction of the contact surface under the action of the magnetic field, and part of the metal vapor is condensed on the metal cylinder, and the arc is extinguished when the natural zero, and the medium strength between the contacts is quickly restored.
[0003] At present, the actuating mechanism of vacuum circuit breaker is mainly driven by electromagnetic operating mechanism to complete the closing and opening actions of circuit breaker, but the premise of stable closing and opening of electromagnetic operating mechanism is the stable and continuous output of current to form a stable magnetic field to maintain the closing and opening actions. When the current fluctuates, the switch is prone to jump. In view of this, we propose a rotary power switch actuating mechanism. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the defects of prior art, adapting to the actual needs, providing a rotary power switch actuating mechanism to solve the technical problems that the existing actuating mechanism is prone to jump when the current fluctuates.
[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a rotary power switch actuating mechanism, which comprises an electromagnetic mechanism with a rotatable sleeve mounted on the outside;
[0006] The electromagnetic mechanism comprises an electromagnet a with a support column formed in the middle of the top, the top end of the support column is connected with a moving block, the top of the electromagnet a is movably provided with an electromagnet b, the top of the electromagnet b is fixedly connected with a support sleeve, at least two side holes are symmetrically formed on the outer edge surface of the support sleeve, and a steel ball is arranged in the side hole;
[0007] The rotatable sleeve comprises a rotatable cover provided outside the support sleeve, a through hole is formed in the middle of the rotatable seat for the support sleeve to rotate out, and at least two arc constraint grooves are symmetrically formed on the inner edge surface of the rotatable seat, and the inner walls of the through hole and the arc constraint grooves are movably connected with the steel ball.
[0008] The utility model discloses a steel ball and arc constraint groove are designed, when vacuum circuit breaker executes closing action, its through electromagnetic force makes that electromagnet b and electromagnet a attract, when the movable block is under the attraction of electromagnetic force and moves up, and can pass through the rotation of rotating seat, make the steel ball that contacts with the inner edge surface of arc constraint groove contracts inwards and is extruded by the inner edge surface of rotating seat and protrudes from the inner edge surface of support sleeve, can limit movable block, limit the downward movement of movable block, thereby realize the effect that prevents the sneak trip after vacuum circuit breaker closing.
[0009] Preferably, the bottom end of the movable block is configured to form a circular truncated cone structure, and the outer surface of the steel ball is movably abutted against the outer edge surface of the movable block and the inclined surface of the bottom end circular truncated cone structure.
[0010] Preferably, a bearing is arranged between the top of the inner edge surface of the rotating seat and the outer edge surface of the support sleeve, and the inner ring and the outer ring of the bearing are fixed to the outer edge surface of the support sleeve and the inner edge surface of the rotating seat respectively.
[0011] Preferably, the electromagnet b is in a hollow ring structure for the support column and the movable block to pass through, and a slot hole is formed in the middle of the bottom end of the support sleeve for the support column to pass through.
[0012] Preferably, a spring is sleeved on the outer edge surface of the support column, the bottom end of the spring is fixedly connected to the electromagnet a, and the top end of the spring is movably abutted against the bottom of the support sleeve.
[0013] Preferably, the side hole is in a ball hole structure, and the steel ball is movably arranged in the side hole.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] The utility model discloses a steel ball and arc constraint groove are designed, when vacuum circuit breaker executes closing action, its through electromagnetic force makes that electromagnet b and electromagnet a attract, when the movable block is under the attraction of electromagnetic force and moves up, and can pass through the rotation of rotating seat, make the steel ball that contacts with the inner edge surface of arc constraint groove contracts inwards and is extruded by the inner edge surface of rotating seat and protrudes from the inner edge surface of support sleeve, can limit movable block, limit the downward movement of movable block, thereby realize the effect that prevents the sneak trip after vacuum circuit breaker closing, solve the problem that the existing actuator is easy to sneak trip when current fluctuates. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the structural schematic diagram of the utility model;
[0017] Figure 2 It is the sectional view of the utility model Figure 1 ;
[0018] Figure 3 It is the split schematic view of the utility model Figure 1 ;
[0019] Figure 4 It is the structure schematic view of the rotating sleeve of the utility model;
[0020] Figure 5 It is the plan view of the rotating sleeve of the utility model.
[0021] Mark explanation in the drawing:
[0022] 1, electromagnetic mechanism; 101, electromagnet a; 102, support column; 103, moving block; 104, spring; 2, electromagnet b; 3, support sleeve; 4, side hole; 5, steel ball; 6, bearing; 7, rotating sleeve; 701, rotating seat; 702, arc constraint groove. Specific implementation
[0023] As Figures 1-5 Indicated, the utility model relates to a kind of rotary power switch executing mechanism, including the electromagnetic mechanism 1 of detachable external movable installation with rotating sleeve 7, the electromagnetic mechanism 1 includes the electromagnet a 101 of top center configuration formed with support column 102, the top end of the support column 102 is connected with moving block 103, the top of the electromagnet a 101 movably is provided with electromagnet b 2, the top of the electromagnet b 2 is fixedly connected with support sleeve 3, at least two side holes 4 are symmetrically provided on the outer edge surface of the support sleeve 3, the steel ball 5 is arranged in the side hole 4, the rotating sleeve 7 includes the rotating seat 701 rotatable cover in the external of support sleeve 3, the middle part of the rotating seat 701 is formed with the through hole for support sleeve 3 rotatable out, and at least two arc constraint grooves 702 are symmetrically formed on the inner edge surface of rotating seat 701, the inner wall of the through hole and arc constraint groove 702 is movably contacted with steel ball 5.
[0024] In the embodiment of the utility model, the bottom end of the moving block 103 is formed with the structure of circular truncated cone, the outer surface of the steel ball 5 is movably contacted with the outer edge surface of moving block 103 and the inclined surface of bottom end circular truncated cone structure, the inner ring and outer ring of the bearing 6 are fixed on the outer edge surface of support sleeve 3 and the inner edge surface of rotating seat 701 respectively between the top of the inner edge surface of rotating seat 701 and the outer edge surface of support sleeve 3.
[0025] In the embodiment of the utility model, the electromagnet b 2 is hollow ring structure for the support column 102 and moving block 103 to pass out, the bottom end of the support sleeve 3 is formed with the slot hole for support column 102 to pass out, the spring 104 is sleeved on the outer edge surface of the support column 102, the bottom end of the spring 104 is fixedly connected to the electromagnet a 101, and the top end of the spring 104 is movably contacted with the bottom of support sleeve 3.
[0026] In the embodiment of the utility model, the side hole 4 is in the structure of a ball hole, and the steel ball 5 is movably arranged in the side hole 4.
[0027] Working principle: the embodiment provides a rotary power switch executing mechanism, when in use, when the vacuum circuit breaker performs the closing action, the electromagnet b2 and the electromagnet a101 are attracted by electromagnetic force, at this time, the moving block 103 is moved upward under the attraction of the electromagnetic force, and the steel ball 5 in contact with the inner edge surface of the arc-shaped constraint groove 702 is retracted inward and is extruded by the inner edge surface of the rotary seat 701 to protrude from the inner edge surface of the supporting sleeve 3, that is, the moving block 103 can be limited, and the downward movement of the moving block 103 is limited, when opening, the rotary seat 701 is continuously rotated, so that the steel ball 5 is separated from the inner wall of the rotary seat 701 and abuts against the inner wall of the arc-shaped constraint groove 702, that is, the steel ball 5 is retracted from the inner edge surface of the supporting sleeve 3, the limitation of the downward movement of the moving block 103 is removed, and the subsequent opening action can be completed.
[0028] The embodiment of the utility model discloses the preferable embodiment, but is not limited to this, and the ordinary skilled in the art, easily understands the spirit of the utility model according to the above-mentioned embodiment, and makes different extension and change, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.
Claims
1. A rotary power switch actuator, characterized in that, Includes an electromagnetic mechanism (1) with an externally detachable rotating sleeve (7); The electromagnetic mechanism (1) includes an electromagnet a (101) with a support column (102) formed at the top center. A moving block (103) is connected to the top of the support column (102). An electromagnet b (2) is movably arranged at the top of the electromagnet a (101). A support sleeve (3) is fixedly connected to the top of the electromagnet b (2). At least two side holes (4) are symmetrically opened on the outer edge of the support sleeve (3). A steel ball (5) is arranged in the side hole (4). The rotating sleeve (7) includes a rotating seat (701) that can be rotatably covered outside the support sleeve (3). The rotating seat (701) has a through hole in the middle for the support sleeve (3) to rotatably pass through. At least two arc-shaped constraint grooves (702) are symmetrically formed on the inner edge surface of the rotating seat (701). The inner walls of the through hole and the arc-shaped constraint grooves (702) are in contact with the steel ball (5).
2. The rotary power switch actuator according to claim 1, characterized in that, The bottom end of the moving block (103) is constructed to form a frustum-shaped structure, and the outer surface of the steel ball (5) is in contact with the outer edge of the moving block (103) and the inclined surface of the frustum-shaped structure at the bottom end.
3. The rotary power switch actuator according to claim 1, characterized in that, A bearing (6) is provided between the top of the inner edge of the rotating seat (701) and the outer edge of the support sleeve (3). The inner ring and outer ring of the bearing (6) are respectively fixed to the outer edge of the support sleeve (3) and the inner edge of the rotating seat (701).
4. The rotary power switch actuator according to claim 1, characterized in that, The electromagnet b (2) has an annular structure with a hollow interior for the support column (102) and moving block (103) to pass through. The bottom end of the support sleeve (3) has a slot for the support column (102) to pass through.
5. A rotary power switch actuator according to claim 1, characterized in that, A spring (104) is sleeved on the outer edge of the support column (102). The bottom end of the spring (104) is fixedly connected to the electromagnet a (101), and the top end of the spring (104) moves against the bottom of the support sleeve (3).
6. The rotary power switch actuator according to claim 1, characterized in that, The side hole (4) has a spherical hole structure, and the steel ball (5) is movably disposed in the side hole (4).