Door coupling drawer self-locking device of low-voltage complete control equipment

Abstract

The utility model relates to a door coupling drawer self-locking device of low-voltage complete control equipment, and belongs to the field of low-voltage complete control equipment. Comprising an operating handle, drawer units, drawer partition plates, operating connecting rods and electric switches. The drawer unit is arranged above the drawer partition plate, the operating handle is arranged on the outer side of a front plate of the drawer unit, and the electric appliance switch is installed on a back plate of the drawer unit. And the other end of the operation connecting rod is connected with the electric appliance switch. A drawer locking device is further arranged on the operation connecting rod and used for controlling locking or unlocking of the electric appliance switch and the drawer unit at the same time through the operation handle. The self-locking device is simple in structure and easy to process, realizes self-locking of the drawer unit under the condition of circuit conduction, and effectively prevents the drawer from being opened in the state. And when the circuit is disconnected, the drawer unit can be unlocked for maintenance. Operation is simple and flexible, potential safety hazards caused by misoperation of maintainers are avoided, and the safety of equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to a low-voltage complete set of control equipment, in particular to a door-coupled drawer self-locking device of the low-voltage complete set of control equipment. Background Art

[0002] At present, some low-voltage complete sets of control equipment are used in harsh environments and have high requirements for equipment protection levels. This type of cabinet with a high protection level usually uses a door coupling mechanism to control the electrical switch in the cabinet. The operating handle of the door coupling mechanism is installed on the outside of the cabinet door. The operating handle can be rotated to control the electrical switch in the cabinet through the operating rod to achieve the function of controlling the on and off of the circuit outside the cabinet. The drawer unit control circuit is a very space-saving method. The operating handle installed on the drawer panel can be used to drive the operating rod of the door coupling mechanism to achieve the function of controlling the on and off of the circuit outside the cabinet. However, the drawer space is relatively small and door locks cannot be installed like cabinet doors. The drawer can be easily opened by the operator. If the electrical switch in the drawer is not disconnected, the operator is prone to electric shock. How to make the drawer unit with a door coupling mechanism unable to open the drawer when powered on, and only when the electrical switch is disconnected can the drawer be opened to ensure the personal safety of the operator has become an urgent problem to be solved at this stage. Summary of the invention

[0003] In view of the problems existing in the prior art, the utility model provides a door coupling drawer self-locking device for low-voltage complete control equipment, which can lock the drawer when the electrical device and electrical switch are closed, thereby solving the risk of electric shock accidents for operators caused by the drawer unit of the door coupling mechanism being pulled out with power on and the circuit exposed to the outside.

[0004] The technical solution adopted by the utility model is: a door-coupled drawer self-locking device of a low-voltage complete set of control equipment, comprising an operating handle 1, a drawer unit 2, a drawer partition 3, an operating link 4 and an electrical switch 6, wherein the drawer unit 2 is arranged above the drawer partition 3, the operating handle is arranged on the outside of the front plate 2-1 of the drawer unit 2, the electrical switch 6 is installed on the back plate 2-2 of the drawer unit 2, one end of the operating link 4 is connected to the operating handle 1, and the other end is connected to the electrical switch 6, and a drawer locking device 5 is arranged on the operating link 4 for controlling the locking or unlocking of the electrical switch and the drawer unit 2 simultaneously using the operating handle 1.

[0005] The beneficial effects of the utility model are reflected in many aspects. First, by preventing the drawer from being opened when the electrical switch is not disconnected, the potential danger caused by the exposed circuit is effectively avoided, thereby improving the reliability and safety of the equipment. Secondly, the design of the self-locking device is flexible and suitable for the door-coupled drawer control circuit, which effectively solves the problem that the traditional door lock cannot be installed due to limited space, and provides more possibilities for the reasonable layout of the equipment.

[0006] In summary, the utility model has a simple structure, is easy to process, and is flexible to operate. By integrating the door coupling mechanism and the self-locking design, it successfully solves the safety hazards of the drawer unit in a high protection level environment, and provides a reliable and innovative solution for the design and application of low-voltage complete control equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is an overall schematic diagram of the utility model;

[0008] Figure 2 It is a front cross-sectional view of the utility model;

[0009] Figure 3 This is a three-dimensional schematic diagram of the connecting frame of the utility model;

[0010] Figure 4 This is a front plan view of the connecting frame of the utility model;

[0011] Figure 5 This is a three-dimensional schematic diagram of the latch of the utility model;

[0012] Figure 6 This is a schematic diagram of the unlocked state of the drawer locking device according to the embodiment of the utility model;

[0013] Figure 7 This is a schematic diagram of the locked state of the drawer locking device according to an embodiment of the utility model.

[0014] In the figure: 1. operating handle; 2. drawer unit; 2-1. front plate; 2-2. back plate; 2-3. bottom plate; 2-3-1. latch hole I; 3. drawer partition; 3-1. latch hole II; 4. operating connecting rod; 5. locking device; 5-1. connecting frame; 5-1-1. connecting rod connecting hole; 5-1-2. shaft hole I; 5-1-3. positioning hole; 5-2. pin; 5-3. latch; 5-3-1. shaft hole II; 5-3-2. guide surface; 6. electrical switch 6. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] like Figure 1 , Figure 2 As shown, a door-coupled drawer self-locking device of a low-voltage complete set of control equipment comprises: an operating handle 1, a drawer unit 2, a drawer partition 3, an operating connecting rod 4, an electrical switch 6, and a drawer locking device 5;

[0017] The drawer unit 2 includes a front plate 2-1, a back plate 2-2, a bottom plate 2-3 and two side plates. The operating handle 1 is a universal knob switch installed on the outside of the front plate 2-1 of the drawer unit 2; the electrical switch 6 is installed on the back plate 2-2 of the drawer unit 2; a rectangular latch hole I2-3-1 is opened on the bottom plate 2-3 of the drawer unit 2;

[0018] The drawer partition 3 is a thick metal plate, fixed on the cabinet, horizontally arranged below the drawer unit 2, parallel to the bottom plate 2-3 of the drawer unit 2, and a latch hole II3-1 corresponding to the latch hole I2-3-1 of the bottom plate 2-3 is opened on the plate surface of the drawer partition 3, and the position and size of the latch hole I2-3-1 are the same as those of the latch hole II3-1;

[0019] The operating link 4 is a rectangular metal rod with a square cross section;

[0020] The locking device 5 includes a connecting frame 5-1, a pin 5-2 and a latch 5-3, as shown in FIG. Figure 4 As shown, the connecting frame 5-1 is processed into a U-shape by a metal plate as a whole, and square connecting rod connecting holes 5-1-1 matching the operating connecting rod 4 are symmetrically provided at both ends of the U-shape, and a positioning hole 5-1-3 is provided at the bottom of the U-shape. One end of the U-shape is processed into an L-shape, and an axial hole I5-1-2 is provided at the end of the L-shape; Figure 5 As shown, the latch 5-3 is processed from a metal plate into a cuboid with a rectangular cross section, the length and width of which are smaller than the length and width of the latch hole I2-3-1 of the bottom plate 2-3 of the drawer unit 2 and the latch hole II3-1 of the drawer partition 3. An axial hole II5-3-1 is provided at one end of the latch 5-3, and a trapezoidal guide surface 5-3-2 is provided at the bottom of the other end. A pin 5-2 is used to pass through the axial hole II5-3-1 and the axial hole I5-1-2 respectively, and the latch 5-3 is connected to the drawer unit 2. The connecting frame 5-1 is hinged together; the latch pin 6 can rotate around the pin 5-2 as the axis, thereby completing the assembly of the locking device 5. It should be noted that the vertical distance between the center of the connecting rod connecting hole 5-1-1 and the center of the shaft hole I5-1-2 and the horizontal distance between the two are basically equal. Therefore, when the connecting frame 5-1 rotates around the connecting rod connecting hole 5-1-1 as the axis, the latch pin 5-3 can make vertical linear motion with the pin 5-2 as the fulcrum, reducing the left and right position deviation.

[0021] Embodiment: one end of the operating connecting rod 4 is passed through the connecting rod connecting hole 5-1-1 of the connecting frame 5-1, one end is connected to the operating handle 1 on the front plate 2-1 of the drawer unit 2, and the other end is connected to the electrical switch 6. The position of the connecting frame 5-1 is adjusted so that the trapezoidal guide surface 5-3-2 at the bottom of the latch 6 is aligned with the top of the latch hole I2-3-1 of the bottom plate 2-3 of the drawer unit 2. A self-tapping screw is passed through the positioning hole 5-1-3 of the connecting frame 5-1, and tightened so that the self-tapping screw supports the operating connecting rod 4. Since the outer diameter of the self-tapping screw is larger than the positioning hole 5-1-3, the connecting frame 5-1 can be fixed on the operating connecting rod 4. Figure 5 As shown, when in use, the operating handle 1 is vertically upward at 90° to the horizontal plane, and the electrical switch 6 is in the off state. At this time, the latch 5-3 of the locking device 5 is lifted, and the bottom is at a distance from the bottom plate 2-3 of the drawer unit 2, and the drawer unit 2 can be pushed and pulled freely; Figure 6 As shown, when the drawer unit 2 needs to be locked, the operating handle 1 can be rotated 90° clockwise, so that the operating handle 1 drives the operating link 4 to close the electrical switch 6, and the operating link 4 simultaneously drives the connecting frame 5-1 to rotate 90° clockwise, and the latch 5-3 rotates counterclockwise with the pin 5-2 as the axis, and under the action of gravity, moves vertically downward with the pin 5-2 as the fulcrum, thereby simultaneously inserting into the latch hole I2-3-1 of the bottom plate of the drawer unit 2 and the latch hole II3-1 of the drawer partition 3, so that the drawer unit 2 is locked on the drawer partition 3 and cannot be pushed or pulled, thereby ensuring that the drawer unit cannot be pulled out when the circuit is turned on.

Claims

1. A door-coupled drawer self-locking device of a low-voltage complete control device, comprising an operating handle (1), a drawer unit (2), a drawer partition (3), an operating link (4) and an electrical switch (6), wherein the drawer unit (2) is arranged above the drawer partition (3), the operating handle (1) is arranged outside the front plate (2-1) of the drawer unit (2), the electrical switch (6) is mounted on the back plate (2-2) of the drawer unit (2), one end of the operating link (4) is connected to the operating handle (1), and the other end is connected to the electrical switch (6), characterized in that: The operating connecting rod (4) is provided with a drawer locking device (5) for controlling the locking or unlocking of the electrical switch (6) and the drawer unit (2) simultaneously using the operating handle (1).

2. A door-coupled drawer self-locking device for a low-voltage complete control device according to claim 1, characterized in that: The bottom plate (2-3) of the drawer unit (2) and the drawer partition plate (3) are respectively provided with interconnected latch holes I (2-3-1) and latch holes II (3-1), the positions and sizes of the holes corresponding to those of the drawer locking device (5), and the drawer locking device (5) cooperates with the latch holes I (2-3-1) and the latch holes II (3-1) to achieve locking or unlocking of the drawer unit (2).

3. A door-coupled drawer self-locking device for a low-voltage complete control device according to claim 2, characterized in that: The drawer locking device (5) comprises a connecting frame (5-1), a pin (5-2) and a latch (5-3); the connecting frame (5-1) is provided with an axial hole I (5-1-2); one end of the latch (5-3) is provided with a corresponding axial hole II (5-3-1); the pin (5-2) passes through the axial hole I (5-1-2) and the axial hole II (5-3-1) respectively to hinge the latch (5-3) and the connecting frame (5-1); the connecting frame (5-1) is also provided with a connecting rod connecting hole (5-1-2); -1-1) and a positioning hole (5-1-3), the operating connecting rod (4) passes through the connecting rod connecting hole (5-1-1), and the operating connecting rod (4) is fixed to the connecting frame (5-1) by means of a self-tapping screw and the positioning hole (5-1-3), the operating connecting rod (4) can drive the connecting frame (5-1) to rotate about the center of the connecting rod connecting hole (5-1-1) as an axis, so that the latch (5-3) performs vertical linear motion with the pin (5-2) as a fulcrum, and is inserted into or pulled out of the latch hole I (2-3-1) and the latch hole II (3-1).

4. A door-coupled drawer self-locking device for low-voltage complete control equipment according to claim 3, characterized in that: The front of the connecting frame (5-1) is L-shaped, the connecting rod connecting hole (5-1-1) is opened in the center of the L-shaped side wall, the shaft hole I (5-1-2) is opened at the end of the L-shaped bottom, and the vertical distance between the center of the connecting rod connecting hole (5-1-1) and the center of the shaft hole I (5-1-2) is equal to the horizontal distance.

5. The door-coupled drawer self-locking device of a low-voltage complete control device according to claim 3, characterized in that: The cross section of the operating connecting rod (4) is square, and the connecting rod connecting hole (5-1-1) is a square hole matching the operating connecting rod (4).

6. A door-coupled drawer self-locking device for low-voltage complete control equipment according to claim 3, characterized in that: The latch hole I (2-3-1) and the latch hole II (3-1) are rectangular strip holes, the latch pin (5-3) has a rectangular cross section, and its length and width are both smaller than those of the latch hole I (2-3-1) and the latch hole II (3-1), and a trapezoidal guide surface (5-3-2) is provided at the bottom of one end of the latch pin (5-3).

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