Interlocking device for drawer chamber door and circuit breaking operation handle of switch cabinet

Abstract

The utility model provides a switch cabinet drawer chamber door and circuit breaking operation handle interlocking device, which comprises an operation handle and a square shaft, the inner end of the square shaft is used for driving a circuit breaker to open and close, and the operation handle comprises an outer handle, a chamber door connecting box and a rotating body rotationally arranged in the chamber door connecting box. The root part of the outer handle penetrates through the chamber door connecting box and is connected with the rotating center of the rotating body; a cylindrical head and a square cap arranged on the cylindrical head in a sleeving manner are arranged at the outer end of the square shaft, one side of the cylindrical head is connected with one side of the square cap through a bolt structure, and straight rods are arranged on the other two sides of the square cap; a square hole corresponding to the square cap is formed in the center of the rotating body, a linear groove corresponding to the linear rod is formed in the center of the rotating body, and a first disassembly and assembly opening penetrating through the rotating body is formed in the position, right opposite to the bolt structure, of the square hole; the front surface of the chamber door connecting box is provided with a transverse insertion port, and the side surface is provided with a second dismounting port.

Description

Technical Field

[0001] This utility model relates to an electrical device, specifically, to an interlocking device between the drawer door of a switch cabinet and the circuit breaker operating handle. Background Technology

[0002] Low-voltage drawer-type switchgear is equipped with several drawer units (each drawer is an independent functional unit). The drawer units are equipped with electrical components such as circuit breakers, fuses, contactors, and overload protectors. To prevent operators from touching live parts and causing danger, an interlocking mechanism is installed between the drawer door and the circuit breaker operating handle. This allows the drawer door to be opened when the circuit breaker is in the open position, but prevents it from being opened when the circuit breaker is in the closed position.

[0003] like Figure 1 As shown (each component is shown separately in the figure), the traditional interlocking mechanism between the door and the circuit breaker operating handle includes a square shaft 1 installed in the drawer and an operating handle 2 installed on the door. The outer end of the square shaft 1 is provided with a straight bar 3, and the inner end drives the opening and closing of the circuit breaker. The root of the operating handle 2 is provided with a square hole 4 corresponding to the square shaft 1. The two opposite sides of the square hole 4 are provided with a slot 5 corresponding to the straight bar 3. The door connecting part 7 is also provided with a lever 6. The lever 6 is located outside the square hole 4. The lever 6 is provided with a rectangular hole 61 in the middle, a horizontal notch 62 in the center of the two short sides, and a vertical notch 63 at the eccentric position of the two long sides.

[0004] In normal use, the horizontal notch 62 of the lever 6 corresponds to the slot 5 on the square hole 4, while the vertical notch 63 avoids the square hole 4. After the square hole 4 aligns with the square shaft 1, the slot 3 is inserted into the slot 5, allowing the square shaft 1 to rotate with the operating handle 2. When the slot 5 is in the vertical position, the circuit breaker is in the closed position, and the door cannot be opened because the slot 3 is blocked by the lever 6. When the slot 5 is in the horizontal position, the circuit breaker is in the open position, and the slot 3 is no longer blocked by the lever 6, allowing the door to open smoothly. In special circumstances where it is necessary to open the door while it is closed, there is a button on the side of the door connection box 7. Pressing the button with a screwdriver will move the lever 6 until the vertical notch 63 aligns with the square hole 4, allowing the slot 3 to be opened without being blocked by the lever 6. To prevent rust from affecting movement, the existing lever 6 is made of plastic. However, plastic has low strength, and some operators with strong strength may damage lever 6. This requires timely repair, otherwise, it may lead to accidental risks.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention

[0006] The utility model discloses a switch cabinet drawer chamber door and circuit breaking operation handle interlocking device which is scientific in design, stable in structure, not easy to damage and practical.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme: a switch cabinet drawer chamber door and circuit breaking operation handle interlocking device, including the operation handle who installs on the chamber door and and install the square shaft in the drawer, the inner end of square shaft is used for driving circuit breaker switching, the operation handle includes outer handle, chamber door connecting box and rotates and sets up the rotary body in chamber door connecting box, the root of outer handle passes through chamber door connecting box, and is connected with the rotation center of rotary body, the outer end of square shaft is provided with the cylinder head and the square cap of setting on the cylinder head, one side of cylinder head and one side of square cap are connected through bolt structure, and the other two sides of square cap are provided with a character bar, the rotary body center corresponds and sets up the square hole of square cap, and sets up a character slot corresponding the character bar, the square hole is opposite the position of bolt structure and sets up the first dismounting hole of penetrating rotary body, the front surface of chamber door connecting box sets up the horizontal through -inserting mouth, and the side sets up the second dismounting hole, when the character slot rotates to the horizontal state, the character bar can pass through the horizontal through -inserting mouth, when the character slot rotates to the vertical state, the character bar is blocked by the horizontal through -inserting mouth edge, and the first dismounting hole and the second dismounting hole are aligned.

[0008] Based on the above, the ring groove is formed on the outer wall of the cylinder head, and the retaining ring is arranged on the inner wall of the square cap corresponding to the ring groove.

[0009] Based on the above, the counterbore is formed on one side of the square cap, and the bolt structure is arranged in the counterbore.

[0010] Based on the above, the second dismounting hole is covered with a leather plug.

[0011] Compared with the prior art, the utility model has substantial features and progress, specifically, the utility model cancels the traditional switch structure, under normal use state, the cylinder head and the square cap are connected by the bolt structure, the character bar and the character slot are in the horizontal position, which is the open state, the character bar can pass through the horizontal through -inserting mouth, the character bar and the character slot are in the vertical position, which is the closed state, the character bar is blocked by the horizontal through -inserting mouth edge, and the chamber door cannot be opened, under special state, the character bar and the character slot are in the vertical position, the bolt structure is removed through the first dismounting hole and the second dismounting hole, the square cap and the cylinder head are separated, at this time, the square cap will not drive the square shaft to rotate together, the character bar and the character slot can be rotated to the horizontal position under the closed state, and the chamber door is opened, which has the advantages of scientific design, stable structure, not easy to damage, and strong practicability.

[0012] Furthermore, the annular groove and the retaining ring prevent the bolt structure from detaching after removal; the countersunk hole prevents the bolt from protruding; and the leather plug improves concealment and prevents dust from entering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the traditional interlocking mechanism between the door and the circuit breaker operating handle in the background technology.

[0014] Figure 2 This is a front structural diagram of the operating handle in this utility model.

[0015] Figure 3 This is a front structural diagram of the operating handle in another state in this utility model.

[0016] Figure 4 This is a side view of the operating handle in this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the square shaft in this utility model.

[0018] In the diagram: 1. Square shaft; 2. Operating handle; 3. Straight bar; 4. Square hole; 5. Straight groove; 6. Paddle; 7. Door connector box; 8. Cylindrical head; 9. Square cap; 10. Bolt structure; 11. First disassembly / assembly port; 12. Horizontal insertion port; 13. Second disassembly / assembly port; 14. Leather plug; 21. Outer handle; 22. Rotating body; 61. Rectangular hole; 62. Horizontal notch; 63. Vertical notch; 81. Annular groove; 91. Countersunk hole. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0020] like Figures 2-5 As shown, a switch cabinet drawer door and circuit breaker operating handle interlocking device includes an operating handle installed on the drawer door and a square shaft 1 installed in the drawer, wherein the inner end of the square shaft 1 is used to drive the circuit breaker to open and close.

[0021] The operation handle comprises an outer handle 21, a chamber door connecting box 7 and a rotating body 22 arranged in the chamber door connecting box 7, the root of the outer handle 21 passes through the chamber door connecting box 7 and is connected with the rotation center of the rotating body 22; the outer end of the square shaft 1 is provided with a cylindrical head 8 and a square cap 9 sleeved on the cylindrical head 8, one side of the cylindrical head 8 and one side of the square cap 9 are connected through a bolt structure 10, and the other two sides of the square cap 9 are provided with a character bar 3; the center of the rotating body 22 is provided with a square hole 4 corresponding to the square cap 9 and a character groove 5 corresponding to the character bar 3, and the square hole 4 is provided with a first dismounting port 11 penetrating through the rotating body 22 at the position opposite to the bolt structure 10; the chamber door connecting box 7 is provided with a transverse insertion port 12 on the front surface and a second dismounting port 13 on the side surface, when the character groove 5 is rotated to a horizontal state, the character bar 3 can pass through the transverse insertion port 12, when the character groove 5 is rotated to a vertical state, the character bar 3 is blocked by the edge of the transverse insertion port 12, and the first dismounting port 11 and the second dismounting port 13 are aligned.

[0022] Working principle:

[0023] In a normal use state, the cylindrical head 8 and the square cap 9 are connected through the bolt structure 10, the character bar 3 and the character groove 5 are in a horizontal position, which is a split state, the character bar 3 can pass through the transverse insertion port 12, the character bar 3 and the character groove 5 are in a vertical position, which is a closed state, the character bar 3 is blocked by the edge of the transverse insertion port 12, and the chamber door cannot be opened; in a special state, when the character bar 3 and the character groove 5 are in a vertical position, the bolt structure 10 is removed through the first dismounting port 11 and the second dismounting port 13, the square cap 9 is separated from the cylindrical head 8, at this time, the square cap 9 cannot drive the square shaft 1 to rotate, so that the character bar 3 and the character groove 5 can be rotated to a horizontal position in the closed state, and the chamber door can be opened.

[0024] In order to avoid the square cap 9 from falling off after the bolt structure 10 is removed, a ring groove 81 is formed on the outer wall of the cylindrical head 8, and a check ring is arranged on the inner wall of the square cap 9 corresponding to the ring groove. A counterbore 91 is formed on one side of the square cap 9, and the bolt structure 10 is arranged in the counterbore 91, so that the bolt does not protrude.

[0025] In order to prevent dust from falling into the hole, a leather plug 14 is covered on the second dismounting port 13, which can improve the concealment of the first dismounting port 11, and non-operation personnel cannot easily find the operation method.

[0026] It should be noted that the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range claimed by the present application.

Claims

1. A switch cabinet drawer door and circuit breaker operating handle interlocking device, comprising an operating handle mounted on the drawer door and a square shaft mounted in the drawer, wherein the inner end of the square shaft is used to drive the circuit breaker to open and close, characterized in that: The operating handle includes an outer handle, a door connection box, and a rotating body rotatably disposed in the door connection box. The root of the outer handle passes through the door connection box and is connected to the rotation center of the rotating body. The outer end of the square shaft is provided with a cylindrical head and a square cap sleeved on the cylindrical head. One side of the cylindrical head and one side of the square cap are connected by a bolt structure. A slot is provided on the other two sides of the square cap. The center of the rotating body has a square hole corresponding to the square cap and a slot corresponding to the slot. The square hole has a first disassembly port that penetrates the rotating body, located opposite the bolt structure. The door connection box has a horizontal insertion port on the front and a second disassembly port on the side. When the slot rotates to a horizontal state, the slot can pass through the horizontal insertion port. When the slot rotates to a vertical state, the slot is blocked by the edge of the horizontal insertion port, and the first and second disassembly ports are aligned.

2. The interlocking device between the switch cabinet drawer door and the circuit breaker operating handle according to claim 1, characterized in that: The cylindrical head has an annular groove on its outer wall, and the square cap has a retaining ring on its inner wall corresponding to the annular groove.

3. The interlocking device between the switch cabinet drawer door and the circuit breaker operating handle according to claim 2, characterized in that: A countersunk hole is provided on one side of the square cap, and the bolt structure is disposed in the countersunk hole.

4. The interlocking device between the switch cabinet drawer door and the circuit breaker operating handle according to any one of claims 1-3, characterized in that: The second disassembly port is sealed with a leather plug.

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