False closing prevention interlocking mechanism for drawer unit
By designing an anti-misoperation interlocking mechanism for the drawer unit, the safety hazard of the circuit breaker being accidentally closed when the unit door is open is solved. It realizes locking when the door is open and unlocking when the door is closed, ensuring the safety and reliability of unit maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU XINYUANXING ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-26
AI Technical Summary
When the unit door is open, the circuit breaker of the drawer unit is prone to accidental closing, posing a safety hazard and increasing the risk of maintenance accidents.
A drawer unit anti-misoperation closing interlock mechanism was designed, including a closing interlock mechanism, an anti-misoperation interlock mechanism, and a door-closing unlocking component. Through the cooperation of the closing interlock locking plate, locking head, and reset component, the closing function is locked when the unit door is open, and the door-closing unlocking component is used to unlock the unit door after it is closed.
It effectively prevents unauthorized personnel from accidentally closing the circuit breaker during maintenance at the unit's outgoing line, thus improving maintenance safety. At the same time, it allows normal operation and closing of the circuit breaker while the door is closed, ensuring safety and reliability.
Smart Images
Figure CN224289031U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage switchgear technology, and in particular to an anti-misoperation closing interlocking mechanism for a drawer unit. Background Technology
[0002] In existing technology, when the unit door is open, the circuit breaker in the drawer unit inside the unit can be closed with the aid of an auxiliary tool. However, when the unit's outgoing power is connected, there is a safety hazard during on-site maintenance of the unit's outgoing lines. For example, when the drawer unit is in the connected position and the unit door is open, professional maintenance personnel need to supervise and control the circuit breaker's closing when performing maintenance operations at the unit's outgoing line. If misoperation causes the circuit breaker to close, it could lead to a serious safety accident.
[0003] Therefore, a new requirement has been put forward in the industry: when the unit door is open, the closing function of the manual operating mechanism of the circuit breaker in the drawer unit should be locked, preventing closing via auxiliary tools, to ensure maintenance safety, avoid accidents caused by misoperation, and improve safety during unit maintenance; it is also required that when the unit door is open, the manual operating mechanism of the circuit breaker in the drawer unit should be able to simulate closing in a test position; however, when the unit door is closed, the closing function of the circuit breaker's manual operating mechanism should be unlocked, allowing normal operation and closing. Utility Model Content
[0004] The technical problem to be solved by this utility model is that when the unit door is open, the drawer unit can also be closed, which poses a risk of accidental closure during unit outgoing line maintenance.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a drawer unit anti-misoperation closing interlock mechanism, comprising:
[0006] The closing interlocking mechanism includes a closing interlocking bracket and a closing interlocking locking plate. The closing interlocking bracket is used to fix the closing interlocking mechanism to the unit. The closing interlocking locking plate can be slidably installed on the closing interlocking bracket by means of a translational connection structure. The closing interlocking locking plate has an initial position at a high point and a locked position at a low point. The closing interlocking is performed when the closing interlocking locking plate is slid down to the locked position.
[0007] The anti-misoperation interlocking mechanism has a locking head that extends under the reset force of the reset element. The closing interlocking locking plate has a locking engagement structure that cooperates with the locking head. When the closing interlocking locking plate is in the initial position, the extended locking head cooperates with the locking engagement structure to prevent the closing interlocking locking plate from moving downward and lock the closing interlocking mechanism.
[0008] The door closing unlocking component is installed on the unit door. After the unit door is closed, the door closing unlocking component cooperates with the anti-misoperation interlocking mechanism to overcome the reset force of the reset component, push the locking head of the anti-misoperation interlocking mechanism to retract, release the cooperation relationship with the locking cooperation structure, and unlock the closing interlocking mechanism.
[0009] In some embodiments, the anti-misoperation interlocking mechanism optionally includes a fixed bracket, an anti-misoperation locking member, and an elastic member. The elastic member is a reset member that provides a reset force. The fixed bracket is used to fix the anti-misoperation interlocking mechanism to the unit. The anti-misoperation locking member can be translatably installed on the fixed bracket through a translational connection mechanism. The anti-misoperation locking member has a locking head. The elastic member acts between the anti-misoperation locking member and the fixed bracket to push the locking head out. After the unit door is closed, the door closing unlocking member contacts and engages with the anti-misoperation locking member to push the locking head back.
[0010] In some embodiments, optionally, the locking engagement structure on the closing interlocking locking plate is a locking groove, into which the locking head is inserted to lock the closing interlocking mechanism.
[0011] In some embodiments, optionally, the locking head is located behind the closing interlock bracket and the closing interlock locking plate. The closing interlock bracket has a locking transition hole with a corresponding locking groove. When locking the closing interlock mechanism, the locking head extends forward and inserts into the locking groove and the locking transition hole.
[0012] In some embodiments, optionally, the translational connection mechanism is a sliding groove connection structure, which specifically includes a sliding groove and a sliding groove screw that passes through the sliding groove for connection and installation; the anti-misoperation locking component has a spring rod, the elastic element is a spring, the spring is sleeved on the spring rod, the fixed bracket has a positioning hole, and the protruding end of the spring rod is inserted into the positioning hole; the anti-misoperation locking component is an L-shaped plate, which is divided into a horizontal part and a vertical part, the locking head is located in the horizontal part, and the horizontal part can be translatably installed on the fixed bracket through the translational connection mechanism. After the unit door is closed, the door unlocking component contacts and engages with the front end of the vertical part of the anti-misoperation locking component to push the locking head back; the spring rod is located at the rear of the vertical part.
[0013] In some embodiments, optionally, the closing interlock locking plate cooperates with the interlock slot on the position interlock mechanism for closing interlock; the closing interlock locking plate moves up and down under the drive of the closing interlock traction plate, and the closing interlock traction plate cooperates with the manual operating shaft and rotates synchronously with the manual operating shaft.
[0014] The beneficial effects of this utility model are: the drawer unit equipped with this anti-misoperation closing interlock mechanism can lock the manual operating mechanism of the circuit breaker when the door is open, preventing the manual operating mechanism from closing the circuit breaker. This prevents unqualified personnel from using auxiliary tools to close the circuit breaker during maintenance operations at the unit's outgoing terminals, thus avoiding accidents and ensuring safety during unit maintenance. When the door is closed, the anti-misoperation closing interlock mechanism is unlocked, allowing the manual operating mechanism to open and close normally.
[0015] This anti-misoperation interlocking mechanism requires a special tool to unlock; fingers cannot be used to unlock it. It is also very inexpensive to use and highly practical.
[0016] This anti-misoperation closing interlocking mechanism will not experience mechanical jamming, the locking is highly reliable, and it effectively guarantees an operating life of 1000 cycles. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a three-dimensional structural diagram of the anti-misoperation interlocking mechanism from the rear view in Example 1;
[0019] Figure 2 This is a frontal perspective three-dimensional structural diagram of the anti-misoperation interlocking mechanism of Embodiment 1;
[0020] Figure 3 This is a schematic diagram of the closing interlock mechanism and the anti-misoperation interlock mechanism in the locked engagement state of Embodiment 1;
[0021] Figure 4 This is a schematic diagram of the structure of the closing interlock mechanism and the anti-misoperation interlock mechanism of Embodiment 1 installed in the drawer unit;
[0022] Figure 5 This is a schematic diagram of the door closing and unlocking component installed on the unit door in Embodiment 1;
[0023] Figure 6 This is a schematic diagram of the door-closing unlocking component unlocking and closing interlocking mechanism in Embodiment 1 when the door is closed;
[0024] Figure 7 This is a schematic diagram of the anti-misoperation interlocking mechanism in the locked state when the door is open in Embodiment 1;
[0025] Figure 8 This is a schematic diagram of the closing interlock mechanism and the anti-misoperation interlock mechanism in the locked engagement state in Embodiment 2;
[0026] Figure 9 This is a three-dimensional structural diagram of the anti-misoperation interlocking mechanism from the rear view in Example 3;
[0027] Figure 10 This is a frontal perspective three-dimensional structural diagram of the anti-misoperation interlocking mechanism of Embodiment 3;
[0028] Figure 11 This is a schematic diagram of the closing interlock mechanism and the anti-misoperation interlock mechanism in the locked engagement state in Embodiment 3;
[0029] Figure 12 This is a schematic diagram of the closing interlock mechanism and the anti-misoperation interlock mechanism in the locked engagement state in Embodiment 4;
[0030] Figure 13 This is a three-dimensional structural diagram of the anti-misoperation interlocking mechanism from the rear view in Example 5;
[0031] Figure 14 This is a frontal perspective three-dimensional structural diagram of the anti-misoperation interlocking mechanism of Example 5;
[0032] Figure 15 This is a schematic diagram of the closing interlock mechanism and the anti-misoperation interlock mechanism of Embodiment 5 installed in the drawer unit;
[0033] Figure 16 This is a schematic diagram of the structure of the closing interlock mechanism and the anti-misoperation interlock mechanism in Embodiment 6 installed in the drawer unit;
[0034] In the diagram, 1. Closing interlock bracket, 2. Closing interlock locking plate, 2-1. Drive unit, 3. Door closing unlocking component, 4. Unit door, 5. Fixed bracket, 6. Anti-mislocking component, 6-1. Locking head, 6-2. Spring rod, 7. Elastic component, 8. Locking groove, 9. Locking transition hole, 10. Slide groove, 11. Slide groove screw, 12. Positioning hole, 13. Interlocking slot, 14. Closing interlocking traction plate, 14-1. Arc-shaped traction slide groove, 15. Manual operating shaft, 16. Unlocking hole. Detailed Implementation
[0035] Example 1, as Figures 1-7As shown, a drawer unit anti-misoperation closing interlock mechanism includes a closing interlock mechanism, an anti-misoperation interlock mechanism, and a door closing unlocking component 3. The closing interlock mechanism includes a closing interlock bracket 1 and a closing interlock locking plate 2. The closing interlock bracket 1 is used to fix the closing interlock mechanism to the unit. The closing interlock locking plate 2 can be slidably installed on the closing interlock bracket 1 through a translational connection structure. The closing interlock locking plate 2 has an initial position at a high point and a locked position at a low point. The closing interlock is performed when the closing interlock locking plate 2 is slid downward to the locked position. The anti-misoperation interlocking mechanism has a locking head 6-1 that extends under the reset force of the reset component. The closing interlocking locking plate 2 has a locking engagement structure that cooperates with the locking head 6-1. When the closing interlocking locking plate 2 is in the initial position, the extended locking head 6-1 cooperates with the locking engagement structure to prevent the closing interlocking locking plate 2 from moving downward and lock the closing interlocking mechanism. The door closing unlocking component 3 is installed on the unit door 4. After the unit door 4 is closed, the door closing unlocking component 3 cooperates with the anti-misoperation interlocking mechanism to overcome the reset force of the reset component, push the locking head 6-1 of the anti-misoperation interlocking mechanism to retract, release the cooperation relationship with the locking engagement structure, and unlock the closing interlocking mechanism.
[0036] like Figure 1 and 2 As shown, the anti-misoperation interlocking mechanism specifically includes a fixed bracket 5, an anti-misoperation locking component 6, and an elastic component 7. The elastic component 7 is a reset component that provides a reset force. The fixed bracket 5 is used to fix the anti-misoperation interlocking mechanism to the unit. The anti-misoperation locking component 6 can be slidably installed on the fixed bracket 5 through a translational connection mechanism. The anti-misoperation locking component 6 has a locking head 6-1. The elastic component 7 acts between the anti-misoperation locking component 6 and the fixed bracket 5, pushing the locking head 6-1 to extend. After the unit door 4 is closed, the door unlocking component 3 contacts and cooperates with the anti-misoperation locking component 6 to push the locking head 6-1 to retract.
[0037] The locking mechanism on the closing interlocking locking plate 2 is specifically a locking groove 8, into which the locking head 6-1 is inserted to lock the closing interlocking mechanism.
[0038] The locking head 6-1 is located behind the closing interlock bracket 1 and the closing interlock locking plate 2. The closing interlock bracket 1 has a locking transition hole 9 corresponding to the locking groove 8. When locking the closing interlock mechanism, the locking head 6-1 extends forward and inserts into the locking groove 8 and the locking transition hole 9.
[0039] The translational connection mechanism is specifically a sliding groove connection structure, which includes a sliding groove 10 and a sliding groove screw 11 that passes through the sliding groove 10 for connection and installation.
[0040] The anti-misoperation locking component 6 has a spring rod 6-2, the elastic component 7 is a spring, the spring is sleeved on the spring rod 6-2, the fixed bracket 5 has a positioning hole 12, and the protruding end of the spring rod 6-2 is inserted into the positioning hole 12.
[0041] The anti-misoperation locking component 6 is an L-shaped plate. The anti-misoperation locking component 6 is divided into a horizontal part and a vertical part. The locking head 6-1 is located in the horizontal part. The horizontal part can be slidably installed on the fixed bracket 5 through the translation connection mechanism. After the unit door 4 is closed, the door unlocking component 3 contacts and cooperates with the front end of the vertical part of the anti-misoperation locking component 6 to push the locking head 6-1 to retract backward.
[0042] Spring rod 6-2 is located at the rear of the vertical section.
[0043] The closing interlocking locking plate 2 cooperates with the interlocking slot 13 on the position interlocking mechanism to perform closing interlocking.
[0044] The closing interlock locking plate 2 moves up and down under the drive of the closing interlock traction plate 14. The closing interlock traction plate 14 is driven and cooperates with the manual operating shaft 15, and rotates synchronously with the manual operating shaft 15.
[0045] The closing interlock locking plate 2 and the closing interlock traction plate 14 are driven by the arc-shaped traction slide 14-1 and the driving part 2-1 embedded in the arc-shaped traction slide 14-1. The arc-shaped traction slide 14-1 and the driving part 2-1 are located on the closing interlock traction plate 14 and the closing interlock locking plate 2, respectively.
[0046] The drawer unit in this embodiment 1 is also called an economy drawer unit. MS, GCS, and GCK drawer units all belong to the economy drawer unit category. The anti-misoperation interlocking mechanism in this embodiment 1 is located above the position interlocking mechanism. The fixed bracket 5 of the anti-misoperation interlocking mechanism has a fixing hole for mounting the fixed bracket 5. The sliding groove 10 of the translational connection mechanism between the anti-misoperation locking component 6 and the fixed bracket 5 is located on the anti-misoperation locking component 6, and the sliding groove screw 11 is located on the fixed bracket 5. The door closing unlocking component 3 is located on the left outer side of the closing interlocking bracket 1 and the closing interlocking locking plate 2. The fixed bracket 5 has a baffle that blocks the anti-misoperation locking component 6, and an unlocking hole 16 is opened on the baffle. The door closing unlocking component 3 passes through the unlocking hole 16 to contact the anti-misoperation locking component 6. This design means that unlocking this anti-misoperation closing interlocking mechanism requires a special tool, and fingers cannot be used for unlocking.
[0047] like Figure 6 As shown, when the unit door 4 is in the closed state, the rear end of the door unlocking component 3 on the unit door 4 presses against the front end of the vertical part of the anti-misoperation locking component 6, so that the anti-misoperation locking component 6 overcomes the elastic force of the elastic component 7 and moves backward along the slide groove 10. The locking head 6-1 disengages from the closing interlock locking plate 2, so that the closing interlock mechanism is unlocked and the manual operation mechanism of the circuit breaker can open and close normally.
[0048] like Figure 7As shown, when the unit door 4 is in the open state, the anti-misoperation locking component 6 moves forward under the elastic force of the elastic component 7. The locking head 6-1 of the anti-misoperation locking component 6 extends forward and inserts into the locking groove 8 and the locking transition hole 9, locking the closing interlock locking plate 2, thereby unlocking the closing interlock mechanism and locking the manual operation mechanism of the circuit breaker, preventing closing.
[0049] When unit door 4 is in the open state, if the drawer unit needs to be simulated to close in the test position, a special tool can be used to replace the door closing unlocking part 3 to press against the front end of the vertical part of the anti-misoperation locking part 6, so that the closing interlocking mechanism is unlocked, and then the circuit breaker can be closed by using an auxiliary tool through the manual operation mechanism.
[0050] Example 2, as Figure 8 As shown, it is basically the same as in Embodiment 1. The drawer unit is an economical drawer unit with door opening operation. The position operation of the drawer unit is performed when the unit door 4 is in the open state. The difference is that the closing interlocking mechanism is an eccentric closing interlocking mechanism. The eccentric closing interlocking mechanism uses a gear synchronous transmission mechanism to eccentrically transfer the opening and closing action of the opening and closing handle to the manual operating shaft 15 of the circuit breaker.
[0051] Example 3 is basically the same as Example 1, except that: the drawer unit in Example 3 is an economical drawer unit with a closing operation. After closing the unit door 4, the drawer unit is positioned as follows: Figure 9 , 10 As shown in Figure 11.
[0052] Example 4 is basically the same as Example 3, except that the closing interlocking mechanism is an eccentric closing interlocking mechanism, such as... Figure 12 As shown.
[0053] Example 5 is basically the same as Example 1, except that: the drawer unit is a movable drawer unit, and the fixing bracket 5 is installed on the upper cover plate of the fixed part of the movable drawer unit, such as... Figure 13 , 14 As shown in Figure 15.
[0054] Example 6 is basically the same as Example 5, except that the closing interlocking mechanism is an eccentric closing interlocking mechanism, such as... Figure 16 As shown.
Claims
1. A drawer unit anti-misoperation closing interlock mechanism, characterized in that, include: The closing interlocking mechanism includes a closing interlocking bracket (1) and a closing interlocking locking plate (2). The closing interlocking bracket (1) is used to fix the closing interlocking mechanism to the unit. The closing interlocking locking plate (2) can be installed on the closing interlocking bracket (1) by a translational connection structure. The closing interlocking locking plate (2) has an initial position at a high point and a locking position at a low point. The closing interlocking is performed when the closing interlocking locking plate (2) is translated downward to the locking position. The anti-misoperation interlocking mechanism has a locking head (6-1) that extends under the reset force of the reset member. The closing interlocking locking plate (2) has a locking engagement structure that cooperates with the locking head (6-1). When the closing interlocking locking plate (2) is in the initial position, the extended locking head (6-1) cooperates with the locking engagement structure to prevent the closing interlocking locking plate (2) from moving downward and lock the closing interlocking mechanism. The door-closing unlocking component (3) is installed on the unit door (4). After the unit door (4) is closed, the door-closing unlocking component (3) cooperates with the anti-misoperation interlocking mechanism to overcome the reset force of the reset component, push the locking head (6-1) of the anti-misoperation interlocking mechanism to retract, release the cooperation relationship with the locking cooperation structure, and unlock the closing interlocking mechanism.
2. The anti-misoperation closing interlock mechanism for the drawer unit according to claim 1, characterized in that: The anti-misoperation interlocking mechanism includes a fixed bracket (5), an anti-misoperation locking component (6), and an elastic component (7). The elastic component (7) is a reset component that provides a reset force. The fixed bracket (5) is used to fix the anti-misoperation interlocking mechanism to the unit. The anti-misoperation locking component (6) can be translatably installed on the fixed bracket (5) through a translational connection mechanism. The anti-misoperation locking component (6) has a locking head (6-1). The elastic component (7) acts between the anti-misoperation locking component (6) and the fixed bracket (5) to push the locking head (6-1) out. After the unit door (4) is closed, the door unlocking component (3) contacts and cooperates with the anti-misoperation locking component (6) to push the locking head (6-1) back.
3. The anti-misoperation closing interlock mechanism for the drawer unit according to claim 1, characterized in that: The locking mechanism on the closing interlocking locking plate (2) is a locking groove (8), and the locking head (6-1) is inserted into the locking groove (8) to lock the closing interlocking mechanism.
4. The anti-misoperation closing interlock mechanism for the drawer unit according to claim 3, characterized in that: The locking head (6-1) is located behind the closing interlock bracket (1) and the closing interlock locking plate (2). The closing interlock bracket (1) has a locking transition hole (9) corresponding to the locking groove (8). When locking the closing interlock mechanism, the locking head (6-1) extends forward and inserts into the locking groove (8) and the locking transition hole (9).
5. The anti-misoperation closing interlock mechanism for the drawer unit according to claim 2, characterized in that: The translational connection mechanism is specifically a sliding groove connection structure, which specifically includes a sliding groove (10) and a sliding groove screw (11) that passes through the sliding groove (10) for connection and installation. The anti-mislocking component (6) has a spring rod (6-2), the elastic component (7) is a spring, the spring is sleeved on the spring rod (6-2), the fixed bracket (5) has a positioning hole (12), and the protruding end of the spring rod (6-2) is inserted into the positioning hole (12). The anti-misoperation locking component (6) is an L-shaped plate. The anti-misoperation locking component (6) of the L-shaped plate is divided into a horizontal part and a vertical part. The locking head (6-1) is located in the horizontal part. The horizontal part can be slidably installed on the fixed bracket (5) through the translation connection mechanism. After the unit door (4) is closed, the door unlocking component (3) contacts and cooperates with the front end of the vertical part of the anti-misoperation locking component (6) to push the locking head (6-1) to retract backward. The spring bar (6-2) is located at the rear of the vertical section.
6. The anti-misoperation closing interlock mechanism for the drawer unit according to claim 1, characterized in that: The closing interlock locking plate (2) cooperates with the interlock slot (13) on the position interlock mechanism to perform closing interlock; The closing interlock locking plate (2) moves up and down under the drive of the closing interlock traction plate (14). The closing interlock traction plate (14) is driven and cooperates with the manual operating shaft (15), and rotates synchronously with the manual operating shaft (15). The closing interlock locking plate (2) and the closing interlock traction plate (14) are driven by the arc-shaped traction groove (14-1) and the driving part (2-1) embedded in the arc-shaped traction groove (14-1). The arc-shaped traction groove (14-1) and the driving part (2-1) are located on the closing interlock traction plate (14) and the closing interlock locking plate (2), respectively.