Three-station single-shaft operating handle
By designing a three-position single-axis operating handle, and utilizing a combination of a rocker, locking block, and reset component, the problem of lack of feedback in the operation of existing three-position circuit breakers is solved, achieving safe and accurate circuit breaker state switching and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-07
AI Technical Summary
The crank operation of existing three-position circuit breakers lacks mechanical feedback, leading to repetitive or repeated operation, posing safety hazards and resulting in a poor user experience.
Design a three-position single-axis operating handle, including a rocker arm, a locking block, a fixing block, and a reset component. The centering and reset are achieved by the swing of the locking block and the elasticity of the reset component, providing mechanical feedback and accurate state switching.
It enables safe and accurate operation of the three-position circuit breaker, provides mechanical feedback, reduces human error, and improves the safety and convenience of operation.
Smart Images
Figure CN224096615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker accessories, specifically to a three-position single-axis operating handle. Background Technology
[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. When using a high-voltage three-position circuit breaker, the switch cabinet door must be unlocked using a crank tool to ensure the circuit breaker is in a safe, open, and grounded state before opening the cabinet door for any operations, thus ensuring the safety of the operators.
[0003] However, the existing crank handles do not provide mechanical or structural feedback during operation, which can easily lead to repetitive or repeated operation when the internal workings of the electrical cabinet are unknown. This results in a poor user experience, increases the risk of human error, and poses certain safety hazards. Utility Model Content
[0004] The purpose of this invention is to provide a three-position single-axis operating handle, which aims to improve the relatively poor safety of existing crank handles.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a three-position single-axis operating handle, comprising:
[0006] Joystick; and
[0007] The lock includes a locking block that is oscillatingly mounted on the rocker arm, a fixing block that limits the oscillation stroke of the locking block, and a reset member that repositions the adjusting part of the locking block.
[0008] The fixing block is provided with an annular groove for accommodating the annular portion of the locking block, and a through-hole for the adjustment portion of the locking block to extend out. The length of the through-hole is greater than the width or thickness of the locking block.
[0009] Preferably, one end of the rocker arm is provided with a chamfered edge, and at least one working plane is provided on the rocker arm between the chamfered edge and the lock head.
[0010] Preferably, the reset member includes a first torsion spring and a second torsion spring, and the adjusting part of the locking block is provided with a convex shaft parallel to the axial direction of the rocker arm; the first torsion spring is disposed between one side of the convex shaft and the rocker arm, and the second torsion spring is disposed between the other side of the convex shaft and the rocker arm.
[0011] Preferably, a limiting block is provided in the middle of the rocker arm, the length or width of the limiting block being greater than the length or width of the lock head, or the radius of the limiting block being greater than the radius of the lock head.
[0012] Preferably, the limiting block is a cylinder.
[0013] Preferably, the fixing block includes a positioning part fixedly disposed on the rocker arm and a limiting part disposed on the positioning part, the limiting part being sleeved on the rocker arm, and the annular groove being disposed within the limiting part.
[0014] Preferably, the rocker arm has a Z-shaped or S-shaped structure, the lock head is located at one end of the rocker arm, and a handle is provided at the other end of the rocker arm.
[0015] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:
[0016] 1. The lock head is designed with a locking block and a fixing block, which are assembled to form an unlocking structure. The locking block can swing within the passage by the action of the rocker arm, and the range of swing is limited by the passage. In the free state, the locking block can be centered or reset by the reset component, thus keeping the locking block in a fixed position in the free state so that it can be quickly and accurately inserted when in use.
[0017] 2. In a three-position circuit breaker, the three-position single-axis operating handle can switch between different states by performing forward and reverse operations and rotating to different positions. During operation, the first insertion and rotation of the handle switches the circuit breaker to the isolation state. After removing the handle and resetting the locking block using the reset mechanism, inserting it a second time causes the locking block to be axially stopped by the limiting shaft within the circuit breaker. Thus, rotating the handle in this position allows for unlocking the cabinet door and switching the grounding, ensuring safe and accurate operation.
[0018] 3. When switching the state of a three-position circuit breaker, the three-position single-axis operating handle is operated by rotation, which can provide feedback on the mechanical operation. For example, after rotating to one side and locking (unable to rotate), you know that the state switch is completed, thus forming the effect of mechanical feedback of operation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the three-position single-axis operating handle of this utility model;
[0020] Figure 2 This is a partial view of the three-position single-axis operating handle of this utility model;
[0021] Figure 3 This is a partial exploded view of the three-station single-axis operating handle described in this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 10. Joystick; 101. Beveled edge; 102. Workstation plane; 103. Limit block; 104. Handle;
[0024] 20. Lock head; 201. Lock block; 202. Fixing block; 203. Reset component;
[0025] 2011, convex shaft;
[0026] 2021, Annular groove; 2022, Through port; 2023, Positioning part; 2024, Limiting part;
[0027] 2031, First torsion spring; 2032, Second torsion spring. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0029] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.
[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] Example
[0033] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a three-position single-axis operating handle, including a rocker arm 10 and a lock head 20. The lock head 20 includes a lock block 201 swingably mounted on the rocker arm 10, a fixing block 202 that limits the swing stroke of the lock block 201, and a reset member 203 that repositions the adjusting part of the lock block 201. The fixing block 202 has an annular groove 2021 for accommodating the annular part of the lock block 201, and a through-hole 2022 for the adjusting part of the lock block 201 to extend out. The length of the through-hole 2022 is greater than the width or thickness of the lock block 201.
[0034] To facilitate understanding, the opening procedure for a three-position circuit breaker is explained here. It requires two operations: first, switching the three-position circuit breaker to the isolation state (i.e., de-energized state); second, grounding and unlocking the cabinet door. These two operations can be performed simultaneously. This achieves the goal of safely opening the cabinet door of the three-position circuit breaker, forming a practical and safe operation.
[0035] When opening the cabinet door of the three-position circuit breaker, insert the rocker arm 10 with the lock head 20 into the lock hole of the three-position circuit breaker, so that the lock block 201 is aligned and engaged with the lock groove in the lock hole. Then, rotate the rocker arm 10, causing the lock block 201 to drive the part with the lock groove to rotate. For example, clockwise rotation switches to the isolation state, which is the state of opening the cabinet door; while counterclockwise rotation switches to the power-on state, which is the state of closing the cabinet door. In this way, different directions of rotation switch different states. At the same time, after adjustment, there will be obvious locking feedback to know the effect of adjustment.
[0036] After switching to the isolation state, remove the rocker arm 10. The locking block 201 is then centered and reset via the reset component 203, and subsequently reinserted into the locking hole of the three-position circuit breaker. At this time, the three-position circuit breaker has a limiting rod that can axially limit the locking block 201, placing it in the second position of the locking hole. Rotating the rocker arm 10 performs grounding and cabinet door unlocking operations on the three-position circuit breaker, thus opening the cabinet door; rotating it in the opposite direction switches to the conducting state.
[0037] Specifically, in this embodiment, in order to facilitate the rotation of the rocker arm 10, the rocker arm 10 is designed as a Z-shaped or S-shaped structure, the lock head 20 is set at one end of the rocker arm 10, and the other end of the rocker arm 10 is provided with a handle 104, so that it is convenient to operate by gripping the handle 104, thus achieving the purpose of convenient operation.
[0038] Furthermore, such as Figure 3As shown, the reset component 203 in this embodiment can be two torsion springs, which utilize the elastic force of the two torsion springs to maintain the centering and reset of the locking block 201. Specifically, the reset component 203 includes a first torsion spring 2031 and a second torsion spring 2032. The adjusting part of the locking block 201 is provided with a convex shaft 2011 parallel to the axial direction of the rocker arm 10. The first torsion spring 2031 is disposed between one side of the convex shaft 2011 and the rocker arm 10, and the second torsion spring 2032 is disposed between the other side of the convex shaft 2011 and the rocker arm 10. The convex shaft 2011 can be a pin or screw locked onto the locking block 201, or it can be an integrally formed structure with the locking block 201.
[0039] Specifically, the first torsion spring 2031 and the second torsion spring 2032 are installed in opposite directions, with one end fixed to the rocker arm 10 and the other end installed on the cam shaft 2011 in a clamping or fixing manner. This is to compress one of the torsion springs when the locking block 201 rotates forward or backward. In this way, when the adjustment part of the locking block 201 is in a free state, it is reset by the elastic force of the torsion spring, achieving the centering effect.
[0040] like Figure 2 As shown, in this embodiment, one end of the rocker arm 10 is provided with a chamfered surface 101, making the end of the rocker arm 10 form a conical structure, which facilitates insertion into the lock hole. At the same time, at least one working plane 102 is provided on the rocker arm 10 between the chamfered surface 101 and the lock head 20. Through the design of the working plane 102, this section of the rocker arm 10 is not a cylindrical structure. It can be used to achieve the purpose of driving or linkage by cooperating with the working plane 102, thereby improving practicality.
[0041] like Figure 3 As shown, in this embodiment, a limiting block 103 is provided in the middle of the rocker arm 10. The length or width of the limiting block 103 is greater than the length or width of the lock head 20, or the radius of the limiting block 103 is greater than the radius of the lock head 20. The limiting block 103 is cylindrical, so that when inserted into the lock hole, it can be stopped by the limiting block 103 without affecting the engagement of the lock head. The cylindrical structure design of the limiting block 103 can reduce the space occupied when rotating with the rocker arm 10. At the same time, it can also be provided with corresponding through holes in the three-position circuit breaker for engagement, forming a limiting on the three-position single-axis operating handle to ensure the stability of the three-position single-axis operating handle when rotating. At the same time, the limiting block 103 can also form an insertion limit, knowing that it is in place with the lock hole of the three-position circuit breaker after locking, forming mechanical feedback. When inserted a second time, the locking block 201 provides feedback, achieving the effect of safe operation.
[0042] like Figure 3As shown, in this embodiment, the fixing block 202 includes a positioning part 2023 fixedly mounted on the rocker arm 10 and a limiting part 2024 mounted on the positioning part 2023. The limiting part 2024 is sleeved on the rocker arm 10, and an annular groove 2021 is disposed within the limiting part 2024. The positioning part 2023 and the limiting part 2024 can be locked together by multiple bolts, while the limiting part 2024 is fixed to the rocker arm 10 by pins or bolts. To facilitate rotation, the outer contours of the positioning part 2023 and the limiting part 2024 can be cylindrical to avoid irregular shapes increasing the space occupied during rotation. This achieves the effect of convenient assembly through a split structural design.
[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A three-position single-axis operating handle, characterized in that, include: Joystick; and The lock includes a locking block that is oscillatingly mounted on the rocker arm, a fixing block that limits the oscillation stroke of the locking block, and a reset member that repositions the adjusting part of the locking block. The fixing block is provided with an annular groove for accommodating the annular portion of the locking block, and a through-hole for the adjustment portion of the locking block to extend out. The length of the through-hole is greater than the width or thickness of the locking block.
2. The three-station single-axis operating handle according to claim 1, characterized in that: One end of the rocker arm is provided with a chamfered surface, and at least one working plane is provided on the rocker arm between the chamfered surface and the lock head.
3. The three-position single-axis operating handle according to claim 1, characterized in that: The reset component includes a first torsion spring and a second torsion spring. The adjusting part of the locking block is provided with a convex shaft parallel to the axial direction of the rocker arm. The first torsion spring is disposed between one side of the convex shaft and the rocker arm, and the second torsion spring is disposed between the other side of the convex shaft and the rocker arm.
4. The three-position single-axis operating handle according to claim 1, characterized in that: A limit block is provided in the middle of the rocker arm. The length or width of the limit block is greater than the length or width of the lock head, or the radius of the limit block is greater than the radius of the lock head.
5. The three-station single-axis operating handle according to claim 4, characterized in that: The limiting block is a cylinder.
6. The three-position single-axis operating handle according to claim 1, characterized in that: The fixing block includes a positioning part fixedly disposed on the rocker arm and a limiting part disposed on the positioning part. The limiting part is sleeved on the rocker arm, and the annular groove is disposed within the limiting part.
7. The three-position single-axis operating handle according to claim 1, characterized in that: The rocker arm has a Z-shaped or S-shaped structure, the lock head is located at one end of the rocker arm, and a handle is provided at the other end of the rocker arm.