Pull plate mechanism of drawer seat of frame type circuit breaker
By designing a combination mechanism of side plate, pull plate, pull plate and slide rod in the frame circuit breaker drawer seat, and using the design of locking parts and unlocking parts, the problem of stuck pull plate mechanism in the prior art is solved, and the problem of lag is realized The smooth entry and exit of the frame circuit breaker and stable locking improve operational convenience and safety.
Patent Information
- Application Number
- CN202420289791.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-07
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-02-07
AI Technical Summary
The pull-plate mechanism in the drawer seat of the existing frame circuit breaker is not moving smoothly, easily stuck, and lacks a reasonable structural design, which affects operational safety and efficiency.
Using a pull plate mechanism including side plates, pull plates, handle plates and slide rods, the design of locking parts, unlocking parts and locking parts is used to realize the smooth entry and exit of the frame circuit breaker, combining the rollers and guide grooves to ensure movement Stability and smoothness.
It realizes smooth entry and exit of the frame circuit breaker, has a simple structure, stable and reliable locking effect, and improves the convenience and safety of operation.
Smart Images
Figure CN222365984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a drawer seat of a frame type circuit breaker, in particular to a pull plate mechanism of the drawer seat of the frame type circuit breaker. Background Art
[0002] Frame circuit breakers, also known as universal circuit breakers, are mechanical switchgear that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions. It is mainly used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit and other faults. Frame circuit breakers are usually installed in switch cabinets through drawer seats, which have interlocking devices to ensure safety during equipment operation and maintenance.
[0003] At present, a drawer seat of a frame type circuit breaker is provided with a pull plate mechanism to control the entry and exit of the frame type circuit breaker in the drawer seat. The existing pull plate mechanism has an unreasonable structure, does not move smoothly, and is easily stuck. Summary of the invention
[0004] In view of the above-mentioned deficiencies, the utility model provides a pull plate mechanism for a frame type circuit breaker drawer seat which has a simple structure and is easy to operate.
[0005] In order to achieve the above purpose, the utility model adopts a pull plate mechanism of a frame-type circuit breaker drawer seat, including a side plate, a pull plate, a handle plate and a slide rod, the two slide rods are symmetrically arranged on the inner wall of the side plate, the pull plate is arranged to slide between the two slide rods, the handle plate is arranged to slide between the pull plate and the side plate, the front end of the handle plate forms a handle exposed in front of the side plate, a tension spring is connected between the handle plate and the pull plate, a lock is hinged on the pull plate, and an unlocking edge and a locking edge parallel to each other are formed on the side of the handle plate facing the lock, and the locking edge is arranged on the unlocking The lock member is provided with a spring for pushing the locking part into the lock hole, and the unlocking part is provided with a circular unlocking part. The unlocking part controls the lock member to leave or be inserted into the lock hole by contacting with the unlocking edge and the locking edge, and the locking groove limits the unlocking part.
[0006] The utility model is further configured such that the lock is arranged below the handle plate, the unlocking portion of the lock faces upward and rearward, and the locking portion faces downward and frontward.
[0007] The utility model is further configured to form two pull plate guide grooves on the pull plate, and a guide piece is provided on the handle plate and connected in the pull plate guide grooves to realize directional movement of the handle plate.
[0008] The utility model is further configured that a slide bar groove is formed on the slide bar, two sides of the pull plate are clamped in the slide bar groove, and the pull plate is provided with a roller in contact with the slide bar.
[0009] The lock of the utility model adopts the lever principle. When the frame-type circuit breaker moves inward with the pull plate, the unlocking piece at the upper end of the lock is below the locking edge of the handle plate. The handle plate is moved so that the unlocking piece of the lock falls into the locking groove. When the locking part at the lower end of the lock moves to the upper part of the lock hole, that is, the frame-type circuit breaker moves into place, the lock rotates, and the locking part at the lower end of the lock is inserted into the lock hole to lock the pull plate. When unlocking, the handle plate should be pulled first to make the unlocking piece at the upper end of the lock come out of the locking groove. The handle plate continues to move outward, and the unlocking piece moves from the locking edge to the unlocking edge. The upper end of the lock rotates downward, and the locking part at the lower end of the lock rotates upward to make the locking part leave the lock hole, releasing the locking state between the slide bar and the pull plate, so that the pull plate can move outward with the handle plate, and the frame-type circuit breaker can be pulled out of the drawer seat. The beneficial effects of the utility model are simple structure and stable and reliable locking effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of a specific embodiment of the utility model.
[0011] Figure 2 It is a partial schematic diagram of the insertion state of a specific embodiment of the utility model.
[0012] Figure 3 It is a partial schematic diagram of a specific embodiment of the utility model in a removed state. DETAILED DESCRIPTION
[0013] like Figure 1 to Figure 3As shown, a specific embodiment of the utility model is a pull plate mechanism of a frame-type circuit breaker drawer seat, the pull plate mechanism is arranged on both sides of the drawer seat, the pull plate mechanism includes a side plate 1, a pull plate 2, a handle plate 3 and a slide bar 4, the two slide bars 4 are symmetrically arranged on the inner wall of the side plate 1, a slide bar groove 42 is formed on the slide bar 4, the two sides of the pull plate 2 are stuck in the slide bar groove 42 and slide, a roller 22 in contact with the slide bar 4 is arranged on the pull plate 2, the hand plate 3 is arranged between the pull plate 2 and the side plate 1, two pull plate guide grooves 21 are formed on the pull plate 2, a guide member 31 is provided on the hand plate 3 and connected in the pull plate guide groove 21 to realize the directional movement of the hand plate 3, a handle 32 exposed in front of the side plate 1 is formed at the front end of the hand plate 3, a tension spring 5 is connected between the hand plate 3 and the pull plate 2, a lock 6 is hinged on the pull plate 2 below the hand plate 3, and a mutual locking member 6 is formed on the hand plate 3 The unlocking edge 33 and the locking edge 34 are parallel, and the locking edge 34 is arranged in front of the unlocking edge 33. The unlocking edge 33 is located on the outer side of the handle plate 3 relative to the locking edge 34. An obliquely arranged transition edge 35 is connected between the unlocking edge 33 and the locking edge 34. An arc-shaped locking groove 36 is formed on the locking edge 34. A locking hole 41 is formed on the slide bar 4 relative to the locking element 6. The two ends of the locking element 6 form an unlocking portion 61 and a locking portion 62 facing the locking edge 34 and the locking hole 41 respectively. The unlocking portion 61 of the locking element 6 faces the upper rear, and the locking portion 62 faces the lower front. The lock element 41 is provided with a spring 63 for pushing the locking portion 62 into the locking hole 41. A circular unlocking member 64 is provided on the unlocking portion 61. The unlocking member 64 controls the lock element 6 to leave or insert into the locking hole 41 by contacting the unlocking edge 33 and the locking edge 34, and the locking groove 36 limits the unlocking member 64.
[0014] like Figure 2 As shown, when the frame-type circuit breaker moves inward with the pull plate 2, the unlocking piece 64 at the upper end of the lock 6 is below the locking edge 34 of the handle plate, and the handle plate 3 is pushed inward so that the unlocking piece 64 of the lock 6 falls into the locking groove 36. When the locking portion 62 at the lower end of the lock 6 moves to the upper side of the lock hole 41 (that is, the frame-type circuit breaker moves into place), the lock 6 rotates, and the locking portion 62 at the lower end of the lock 6 is inserted into the lock hole 41 to lock the pull plate 2; as shown in FIG. Figure 3 As shown, when unlocking, you must first pull the handle plate 3 to make the unlocking piece 64 at the upper end of the lock 6 disengage from the locking groove 36, the handle plate 3 continues to move outward, the unlocking piece 64 moves from the locking edge 34 to the unlocking edge 33, the upper end of the lock 6 rotates downward, and the locking portion 62 at the lower end of the lock 6 rotates upward to make the locking portion 62 leave the lock hole 41, releasing the locking state between the slide bar 4 and the pull plate 2, so that the pull plate 2 can move outward with the handle plate 3, and the frame-type circuit breaker is pulled out of the drawer seat.
[0015] The preferred embodiments of the present invention in the above specific embodiments and other obvious changes are also within the protection scope of the claims.
Claims
1. A pull plate mechanism for a frame-type circuit breaker drawer seat, comprising a side plate, a pull plate, a handle plate and a slide rod, wherein two slide rods are symmetrically arranged on the inner wall of the side plate, the pull plate is arranged to slide between the two slide rods, the handle plate is arranged to slide between the pull plate and the side plate, the front end of the handle plate forms a handle exposed in front of the side plate, and a tension spring is connected between the handle plate and the pull plate, characterized in that: A lock is hinged on the pull plate, and an unlocking edge and a locking edge parallel to each other are formed on the handle plate facing the lock. The locking edge is arranged in front of the unlocking edge, and the unlocking edge is located on the outer side of the handle plate relative to the locking edge. An obliquely arranged transition edge is connected between the unlocking edge and the locking edge, and an arc-shaped locking groove is formed on the locking edge. A lock hole is formed on the slide bar relative to the lock, and two ends of the lock are respectively formed with an unlocking part and a locking part facing the locking edge and the lock hole. A spring is arranged on the lock to push the locking part into the lock hole, and a circular unlocking part is arranged on the unlocking part. The unlocking part controls the lock to leave or insert into the lock hole by contacting the unlocking edge and the locking edge, and the locking groove limits the unlocking part.
2. The pull plate mechanism of the frame type circuit breaker drawer seat according to claim 1, characterized in that: The lock is arranged below the handle plate, the unlocking portion of the lock faces upward and rearward, and the locking portion faces downward and frontward.
3. The pull plate mechanism of the frame type circuit breaker drawer seat according to claim 1 or 2, characterized in that: Two pull plate guide grooves are formed on the pull plate, and a guide piece is arranged on the handle plate and connected in the pull plate guide grooves to realize the directional movement of the handle plate.
4. The pull plate mechanism of the frame type circuit breaker drawer seat according to claim 1 or 2, characterized in that: A slide bar groove is formed on the slide bar, two sides of the pull plate are clamped in the slide bar groove, and the pull plate is provided with rollers contacting with the slide bar.