A sliding plate mechanism of a drawer type frame circuit breaker and a drawer type frame circuit breaker
Patent Information
- Application Number
- CN202610931174.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-25
- Publication Date
- 2026-09-25
AI Technical Summary
[0002]抽屉式框架断路器的断路器本体两侧通常是通过滑板机构与抽屉框架内壁两侧形成滑动连接，滑板机构包括一个大滑板和一个小滑板，大滑板滑动连接在抽屉框架内壁上，而小滑板滑动连接在大滑板上，大滑板相对抽屉框架的滑动方向与小滑板相对大滑板的滑动方向一致，断路器本体的侧端连接在小滑板上，现有技术的抽屉式框架断路通常只在抽屉框架与小滑板之间设置限位结构，并未在大滑板与抽屉框架之间没有相应的限位结构，导致大滑板在抽出时可能存在状态位置不稳定的风险
本发明所述的抽屉式框架断路器的滑板机构及抽屉式框架断路器中，通过在抽屉框架与第一滑板之间设置第一限位件，当第一滑板和第二滑板抽出到位后，第一限位件能够与抽屉框架形成限位配合，使当第二滑板没有相对第一滑板回退到位时，第一滑板由于第一限位件与抽屉框架的限位配合的限制是无法相对抽屉框架产生回退动作的，如此，大大保证了第一滑板在抽出状态位置时的稳定性，而当第二滑板相对第一滑板回退到位后，第一限位件自动被解锁，第一滑板能够正常相对抽屉框架进行回退操作。
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Figure CN122822658A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of drawer-type frame circuit breaker technology, specifically to a slide mechanism for a drawer-type frame circuit breaker and a drawer-type frame circuit breaker. Background Technology
[0002] In drawer-type circuit breakers, the circuit breaker body is typically slidably connected to the inner walls of the drawer frame via a sliding plate mechanism. The sliding plate mechanism includes a large sliding plate and a small sliding plate. The large sliding plate is slidably connected to the inner wall of the drawer frame, while the small sliding plate is slidably connected to the large sliding plate. The sliding direction of the large sliding plate relative to the drawer frame is the same as the sliding direction of the small sliding plate relative to the large sliding plate. The side end of the circuit breaker body is connected to the small sliding plate. Existing drawer-type circuit breakers typically only have a limiting structure between the drawer frame and the small sliding plate, but no corresponding limiting structure between the large sliding plate and the drawer frame. This lack of a limiting structure may lead to an unstable position of the large sliding plate when it is pulled out. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a sliding plate mechanism for a drawer-type frame circuit breaker, which mainly solves the technical problem that the large sliding plate of existing sliding plate mechanisms may have unstable position when it is pulled out.
[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: A slide mechanism for a drawer-type frame circuit breaker includes a first slide slidably connected to a drawer frame and a second slide slidably connected to the first slide. A first limiting member is rotatably connected to the first slide, and the first limiting member has a first abutment end and a first limiting structure. A first stop is provided on the drawer frame. The first limiting structure is configured to abut against the first stop after the first slide is pulled out relative to the drawer frame to form an anti-retraction limiting engagement to prevent the first slide from retracting into the drawer frame. A first actuating part is provided on the second slide, and the first actuating part is configured to actuate the first abutment end and release the limiting engagement between the first limiting structure and the first stop after the second slide is retracted relative to the first slide, so that the first slide can retract and reset normally relative to the drawer frame.
[0005] Furthermore, when the first slide is pulled out relative to the drawer frame, the first limiting structure of the first limiting member is configured to automatically generate a movement tendency towards the first stop and form an anti-reverse limiting motion with the first stop by relying on the weight of the first limiting member or the elastic force of the elastic member.
[0006] Furthermore, the drawer frame is provided with a slide rail, the first slide plate is slidably connected to the slide rail, and the end of the slide rail forms a first stop for forming an anti-reverse limit with the first limiting structure.
[0007] Furthermore, one end of the first limiting member forms a rotating connection end and is rotatably connected to the first sliding plate. The first abutting end is formed at the other end of the first limiting member away from the rotating connection end, and the first limiting structure is disposed on the part between the rotating connection end and the first abutting end of the first limiting member. The first limiting structure on the first limiting member is a latching protrusion structure. When the first sliding plate retracts into the drawer frame, the first limiting structure abuts against the slide rail surface and can slide freely. When the first sliding plate is pulled out relative to the drawer frame, the first limiting structure moves to the end of the slide rail and automatically locks on the first stop to form an anti-retraction limit.
[0008] Furthermore, the second slide plate is provided with a clearance slot corresponding to the first limiting member. The first actuating part is provided on one side of the clearance slot corresponding to the first contact end, and a wedge-shaped guide surface is formed on the first actuating part. When the second slide plate moves back relative to the first slide plate, the wedge-shaped guide surface and the first contact end collide and cooperate, causing the first limiting member to rotate as a whole until the first limiting structure and the first stop part are released from the limiting cooperation.
[0009] Furthermore, a second limiting member with a lever structure is rotatably connected to the second sliding plate. The two ends of the second limiting member are respectively formed with a second abutment end and a second limiting structure. A second stop is provided on the first sliding plate. The second limiting structure is configured to abut against the second stop after the second sliding plate is pulled out relative to the first sliding plate to form an anti-reverse limiting cooperation, so as to prevent the second sliding plate from retracting relative to the first sliding plate.
[0010] Furthermore, a latch is connected to the second slide plate, and the latch is provided with a second actuating part corresponding to the second abutting end. By rotating the latch, the second actuating part touches the second abutting end, thereby causing the second limiting structure and the second stop part to release the anti-reverse limiting cooperation, so that the second slide plate can retract and reset normally relative to the first slide plate.
[0011] Furthermore, a connecting hole is formed at the other end of the latch away from the second actuating part, and a connecting hole is provided on the second contact end side of the second limiting member. A return spring is connected between the two connecting holes so that the second contact end of the second limiting member has a tendency to automatically form an anti-reverse limiting engagement with the second stop part. A limiting hook corresponding to the second actuating part is provided on the second sliding plate. The rotation range of the latch is limited by the limiting engagement between the limiting hook and the top of the second actuating part.
[0012] Furthermore, the first slide plate is provided with a first hook, and a locking plate is provided at one end of the connecting hole of the lock. The locking plate is configured to form a limiting engagement with the first hook after the second slide plate retracts relative to the first slide plate into place, so as to prevent the second slide plate from being pulled out relative to the first slide plate. The locking plate is also configured to release the limiting engagement with the first hook when the second actuating part is pressed.
[0013] Furthermore, a limiting plate is provided on the drawer frame, and a second hook is provided on the limiting plate. The limiting plate is configured to form a limiting engagement with the second hook after the first slide plate and the second slide plate have retracted into place inside the drawer frame, so as to prevent the first slide plate and the second slide plate from being pulled out relative to the drawer frame. The limiting engagement with the second hook is also configured to be released when the second actuating part is pressed.
[0014] Based on the same inventive concept, the present invention also provides a drawer-type frame circuit breaker, including the slide plate mechanism of the drawer-type frame circuit breaker described above.
[0015] The above technical solution has the following advantages or beneficial effects: In the drawer-type frame circuit breaker and the drawer-type frame circuit breaker described in this invention, a first limiting member is provided between the drawer frame and the first sliding plate. When the first and second sliding plates are pulled out to their positions, the first limiting member can form a limiting engagement with the drawer frame. This ensures that when the second sliding plate has not retracted relative to the first sliding plate, the first sliding plate cannot retract relative to the drawer frame due to the limiting engagement between the first limiting member and the drawer frame. This greatly ensures the stability of the first sliding plate in the pulled-out position. When the second sliding plate retracts relative to the first sliding plate to its positions, the first limiting member is automatically unlocked, and the first sliding plate can then retract normally relative to the drawer frame. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the drawer frame according to an embodiment of the present invention.
[0017] Figure 2 This is a schematic diagram of the assembly structure of the circuit breaker body and the sliding plate mechanism according to an embodiment of the present invention.
[0018] Figure 3 This is a schematic diagram of the slide mechanism of this invention when it is completely withdrawn.
[0019] Figure 4 This is a schematic diagram of the skateboard mechanism of this invention when it is completely pulled out from another angle.
[0020] Figure 5 This is a schematic diagram of the structure of the skateboard mechanism in an embodiment of the present invention when the entire mechanism is pulled out and the latch is pressed to unlock it.
[0021] Figure 6 This is a schematic diagram of the structure during the process of the small skateboard being pushed into the large skateboard according to an embodiment of the present invention.
[0022] Figure 7 This is a schematic diagram of the structure after the small skateboard is fully pushed into the large skateboard according to an embodiment of the present invention.
[0023] Figure 8This is a schematic diagram of the structure from another angle after the small skateboard is fully pushed into the large skateboard according to an embodiment of the present invention.
[0024] Labeling Explanation: 1. Drawer frame, 2. First slide plate, 3. Second slide plate, 4. First limiting component, 5. Second limiting component, 6. Lock, 7. Return spring, 11. First stop, 12. Slide rail, 13. Limiting plate, 21. Second stop, 22. First hook, 31. First actuating part, 32. Groove, 33. Limiting hook, 41. First contact end, 42. First limiting structure, 51. Second contact end, 52. Second limiting structure, 61. Second actuating part, 62. Locking plate, 131. Second hook, 311. Wedge-shaped guide surface. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0027] Please refer to the appendix. Figure 1 To be continued Figure 8An embodiment of the present invention provides a slide plate mechanism for a drawer-type frame circuit breaker, including a first slide plate 2 slidably connected to a drawer frame 1 and a second slide plate 3 slidably connected to the first slide plate 2. A first limiting member 4 is rotatably connected to the first slide plate 2. The first limiting member 4 has a first abutment end 41 and a first limiting structure 42. A first stop portion 11 is provided on the drawer frame 1. The first limiting structure 42 is configured to abut against the first stop portion 11 after the first slide plate 2 is pulled out relative to the drawer frame 1 to form an anti-retraction limiting cooperation to prevent the first slide plate 2 from retracting into the drawer frame 1. A first actuating portion 31 is provided on the second slide plate 3. The first actuating portion 31 is configured to actuate the first abutment end 41 after the second slide plate 3 retracts relative to the first slide plate 2 to release the limiting cooperation between the first limiting structure 42 and the first stop portion 11, so that the first slide plate 2 can retract and reset normally relative to the drawer frame 1. It is understood that in this embodiment, by setting a first limiting member 4 between the drawer frame 1 and the first slide plate 2, when the first slide plate 2 and the second slide plate 3 are pulled out to the position, the first limiting member 4 can form a limiting engagement with the drawer frame 1. This ensures that when the second slide plate 3 is not retracted relative to the first slide plate 2, the first slide plate 2 cannot retract relative to the drawer frame 1 due to the limiting engagement between the first limiting member 4 and the drawer frame 1. This greatly ensures the stability of the first slide plate 2 in the pulled-out position. When the second slide plate 3 retracts relative to the first slide plate 2 to the position, the first limiting member 4 is automatically unlocked, and the first slide plate 2 can normally retract relative to the drawer frame 1.
[0028] Please refer to the appendix. Figure 1 To be continued Figure 8 In one preferred embodiment, after the first sliding plate 2 is pulled out relative to the drawer frame 1, the first limiting structure 42 of the first limiting member 4 is configured to automatically move towards the first stop 11 and form an anti-reverse limiting motion tendency with the first stop 11 by relying on the weight of the first limiting member 4 or the elastic force of the elastic member. In this embodiment, the first limiting member 4 is configured to achieve reset solely by its own weight. Its overall structure is simple and practical, convenient for assembly, and conducive to improving assembly efficiency. However, those skilled in the art should understand that in other embodiments, an elastic member can be configured on the basis of gravity reset to achieve a dual reset function.
[0029] Please refer to the appendix. Figure 1 To be continued Figure 8In one preferred embodiment, a slide rail 12 is provided on the drawer frame 1, and the first slide plate 2 is slidably connected to the slide rail 12. The end of the slide rail 12 forms a first stop portion 11 for forming an anti-retraction limit with the first limiting structure 42. However, those skilled in the art should understand that in other embodiments, the first stop portion 11 can also be a stop protrusion or other structure independently provided on the drawer frame 1, and is not limited to the specific implementation disclosed in this embodiment. As long as the first limiting structure 42 can correspondingly form an anti-retraction limit cooperation with the stop structure after the first slide plate 2 and the second slide plate 3 are pulled out to the position, those skilled in the art can design its installation position and specific shape according to specific needs.
[0030] Please refer to the appendix. Figure 1 To be continued Figure 8 In one preferred embodiment, one end of the first limiting member 4 forms a rotating connection end and is rotatably connected to the first slide plate 2. The first abutting end 41 is formed at the other end of the first limiting member 4 away from the rotating connection end. The first limiting structure 42 is disposed on the part between the rotating connection end and the first abutting end 41 of the first limiting member 4. The first limiting structure 42 on the first limiting member 4 is a latching protrusion structure. When the first slide plate 2 retracts into the drawer frame 1, the first limiting structure 42 abuts against the surface of the slide rail 12 and can slide freely. When the first slide plate 2 is pulled out relative to the drawer frame 1, the first limiting structure 42 moves to the end of the slide rail 12 and automatically locks on the first stop part 11 to form an anti-retraction limit. In this embodiment, the first limiting member 4 can automatically reset by its own weight. It will not interfere with the pulling action of the first slide plate 2 relative to the drawer frame 1 during the process of pulling it out. As long as it is pulled out in place, under the influence of gravity, the first limiting structure 42 will automatically fall and hit the first stop part 11 to form an anti-reverse limiting cooperation to prevent the first slide plate 2 from retracting relative to the drawer frame 1.
[0031] Please refer to the appendix. Figure 1 To be continued Figure 8In one preferred embodiment, the second slide plate 3 has a clearance slot 32 corresponding to the first limiting member 4. A first actuating part 31 is disposed on the side of the clearance slot 32 corresponding to the first contact end 41, and a wedge-shaped guide surface 311 is formed on the first actuating part 31. When the second slide plate 3 retracts relative to the first slide plate 2, the wedge-shaped guide surface 311 engages with the first contact end 41, causing the first limiting member 4 to rotate as a whole until the first limiting structure 42 releases its limiting engagement with the first stop part 11. However, those skilled in the art should understand that in other embodiments, the first actuating part 31 can also be any other actuating structure disposed on the second slide plate 3, and is not limited to the specific implementation disclosed in this embodiment. As long as the actuating structure can correspondingly actuate the first limiting member 4 to release its limiting engagement with the first stop part 11 on the drawer frame 1 when the second slide plate 3 retracts relative to the first slide plate 2, for example, the actuating structure can also have a protrusion structure with a wedge-shaped surface corresponding to the first contact end 41.
[0032] Please refer to the appendix. Figure 1 To be continued Figure 8 In one preferred embodiment, a second limiting member 5 with a lever structure is rotatably connected to the second sliding plate 3. The two ends of the second limiting member 5 are respectively formed with a second abutment end 51 and a second limiting structure 52. A second stop portion 21 is provided on the first sliding plate 2. The second limiting structure 52 is configured to abut against the second stop portion 21 after the second sliding plate 3 is pulled out relative to the first sliding plate 2, forming an anti-reverse limiting engagement to prevent the second sliding plate 3 from retracting relative to the first sliding plate 2. Preferably, a latch 6 is connected to the second sliding plate 3. The latch 6 is provided with a second actuating portion 61 corresponding to the second abutment end 51. By rotating the latch 6, the second actuating portion 61 actuates the second abutment end 51, thereby disengaging the anti-reverse limiting engagement between the second limiting structure 52 and the second stop portion 21, so that the second sliding plate 3 can retract and reset normally relative to the first sliding plate 2. In this embodiment, a clearance space is provided on the first sliding plate 2 to accommodate the second limiting member 5, so that after the second limiting member 5 is unlocked, it can retract relative to the first sliding plate 2 along with the second sliding plate 3. Furthermore, in this embodiment, through the coordinated cooperation of the first limiting member 4 and the second limiting member 5, good positional stability is maintained for both the first sliding plate 2 and the second sliding plate 3 during extraction and retraction.
[0033] Please refer to the appendix. Figure 1 To be continued Figure 8In one preferred embodiment, a connecting hole is formed at the end of the latch 6 away from the second actuating part 61, and a connecting hole is provided on one side of the second abutting end 51 of the second limiting member 5. A return spring 7 is connected between the two connecting holes so that the second abutting end 51 of the second limiting member 5 has a tendency to automatically form an anti-retraction limiting engagement with the second stop part 21. The second sliding plate 3 is provided with a limiting hook 33 corresponding to the second actuating part 61. The limiting engagement between the limiting hook 33 and the top of the second actuating part 61 limits the rotation range of the latch 6. Further, in one preferred embodiment, the first sliding plate 2 is provided with a first hook 22, and a locking plate 62 is provided at one end of the connecting hole of the latch 6. The locking plate 62 is configured to form a limiting engagement with the first hook 22 after the second sliding plate 3 retracts relative to the first sliding plate 2 to prevent the second sliding plate 3 from being pulled out relative to the first sliding plate 2. The locking plate 62 is also configured to release the limiting engagement with the first hook 22 when the second actuating part 61 is pressed. Preferably, a limiting plate 13 is provided on the drawer frame 1, and a second hook 131 is provided on the limiting plate 13. The locking plate 62 is configured to form a limiting engagement with the second hook 131 after the first sliding plate 2 and the second sliding plate 3 have retracted into place inside the drawer frame 1, so as to prevent the first sliding plate 2 and the second sliding plate 3 from being pulled out relative to the drawer frame 1. The locking plate 62 is also configured to release the limiting engagement with the second hook 131 when the second actuating part 61 is pressed. In this embodiment, through the mutual cooperation of the locking plate 62 on the latch 6 with the first hook 22 and the second hook 131, the pulling action of the second sliding plate 3 relative to the drawer frame 1 and relative to the first sliding plate 2 can be effectively controlled. Furthermore, the return spring 7 not only enables the second limiting member 5 to automatically return, but also drives the latch 6 to return, thereby improving the ease of operation of locking and unlocking the latch 6 and the stability of the locked state.
[0034] Please refer to the appendix. Figure 1 To be continued Figure 8 An embodiment of the present invention also provides a drawer-type frame circuit breaker, including the slide plate mechanism of the drawer-type frame circuit breaker described above.
[0035] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features therein. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
Claims
1. A sliding plate mechanism for a drawer-type frame circuit breaker, characterized in that: The device includes a first sliding plate slidably connected to a drawer frame and a second sliding plate slidably connected to the first sliding plate. A first limiting member is rotatably connected to the first sliding plate. The first limiting member has a first abutment end and a first limiting structure. A first stop is provided on the drawer frame. The first limiting structure is configured to abut against the first stop after the first sliding plate is pulled out relative to the drawer frame, forming an anti-retraction limiting engagement to prevent the first sliding plate from retracting into the drawer frame. The second sliding plate has a first actuating part, which is configured to actuate the first abutment end and release the limiting engagement between the first limiting structure and the first stop after the second sliding plate retracts relative to the first sliding plate, so that the first sliding plate can retract and reset normally relative to the drawer frame.
2. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 1, characterized in that: When the first slide is pulled out relative to the drawer frame, the first limiting structure of the first limiting member is configured to automatically move towards the first stop and form an anti-reverse limiting motion tendency with the first stop by relying on the weight of the first limiting member or the elastic force of the elastic member.
3. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 2, characterized in that: The drawer frame is equipped with a slide rail, and the first slide plate is slidably connected to the slide rail. The end of the slide rail forms a first stop for anti-reverse limiting with the first limiting structure.
4. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 3, characterized in that: One end of the first limiting member forms a rotating connection end and is rotatably connected to the first slide plate. The first abutting end is formed at the other end of the first limiting member away from the rotating connection end. The first limiting structure is disposed at the part between the rotating connection end and the first abutting end of the first limiting member. The first limiting structure on the first limiting member is a latching protrusion structure. When the first slide plate retracts into the drawer frame, the first limiting structure abuts against the slide rail surface and can slide freely. When the first slide plate is pulled out relative to the drawer frame, the first limiting structure moves to the end of the slide rail and automatically locks onto the first stop to form an anti-retraction limit.
5. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 1, characterized in that: The second slide plate has a clearance slot corresponding to the first limiting member. The first actuating part is located on the side of the clearance slot corresponding to the first contact end, and a wedge-shaped guide surface is formed on the first actuating part. When the second slide plate moves back relative to the first slide plate, the wedge-shaped guide surface and the first contact end engage to make the first limiting member rotate as a whole until the first limiting structure and the first stop part are released from the limiting engagement.
6. The slide mechanism of the drawer-type frame circuit breaker according to any one of claims 1 to 5, characterized in that: The second slide plate is rotatably connected to a second limiting member with a lever structure. The two ends of the second limiting member are respectively formed with a second abutment end and a second limiting structure. The first slide plate is provided with a second stop. The second limiting structure is configured to abut against the second stop after the second slide plate is pulled out relative to the first slide plate to form an anti-reverse limiting cooperation, so as to prevent the second slide plate from retracting relative to the first slide plate.
7. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 6, characterized in that: The second slide plate is connected to a latch, and the latch is provided with a second actuating part corresponding to the second abutting end. By rotating the latch, the second abutting part actuates the second abutting end, thereby causing the second limiting structure and the second stop to disengage from the anti-reverse limiting engagement, so that the second slide plate can retract and reset normally relative to the first slide plate.
8. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 7, characterized in that: A connecting hole is formed at the other end of the latch away from the second actuating part, and a connecting hole is provided on the second abutting end side of the second limiting member. A return spring is connected between the two connecting holes so that the second abutting end of the second limiting member has a tendency to automatically form an anti-reverse limiting engagement with the second stop part. A limiting hook corresponding to the second actuating part is provided on the second sliding plate. The rotation range of the latch is limited by the limiting engagement between the limiting hook and the top of the second actuating part.
9. The sliding plate mechanism of the drawer-type frame circuit breaker according to claim 7, characterized in that: The first slide plate is provided with a first hook, and a locking plate is provided at one end of the connecting hole of the lock. The locking plate is configured to form a limiting engagement with the first hook after the second slide plate retracts to the position relative to the first slide plate, so as to prevent the second slide plate from being pulled out relative to the first slide plate. The locking plate is also configured to release the limiting engagement with the first hook when the second actuating part is pressed. A limit plate is provided on the drawer frame, and a second hook is provided on the limit plate. The limit plate is configured to engage with the second hook after the first slide plate and the second slide plate have retracted into place inside the drawer frame, so as to prevent the first slide plate and the second slide plate from being pulled out relative to the drawer frame. The limit plate is also configured to release the engagement with the second hook when the second actuating part is pressed.
10. A drawer-type frame circuit breaker, characterized in that: The sliding plate mechanism of the drawer-type frame circuit breaker as described in any one of claims 1 to 9.