Anti-falling device for drawer of low-voltage cabinet

Abstract

The utility model relates to an anti-falling device for a drawer of a low-voltage cabinet, which comprises a push plate and a baffle plate, the push plate is slidably connected with a side plate of the drawer along the front-back direction, and a guide rivet D is fixedly arranged on the push plate; the baffle is slidably connected with a side plate of the drawer in the vertical direction, an inclined guide long hole D is formed in the baffle, and the guide rivet D is slidably connected with the guide long hole D in a matched mode; a spring is arranged between the push plate and the side plate, when the push plate is located at the initial position, the spring is in a natural state, the baffle is located at the upper position, and the top of the baffle is higher than the bottom face of the upper blocking eave of the cabinet body. When the push plate moves to a characteristic position in the front-back direction, the spring generates elastic deformation, the baffle is located at the lower position, and the top of the baffle is lower than the bottom face of the upper blocking eave of the cabinet body. According to the technical scheme, the drawer can be effectively prevented from falling off, and the use safety coefficient of the drawer of the draw-out type low-voltage cabinet is improved.

Description

A low-pressure cabinet drawer anti-fall device Technical Field

[0001] This utility model belongs to the technical field of pull-out low-pressure cabinet drawers, specifically relating to a low-pressure cabinet drawer anti-fall device. Background Technology

[0002] Pull-out low-voltage switchgear drawers are modular functional units in low-voltage switchgear, consisting of a fixed cabinet and a movable drawer unit. They are mainly used for segmented control, protection, and maintenance of circuits. In practical applications, sometimes it is necessary to completely pull the movable drawer unit out of the cabinet, and sometimes only a section needs to be pulled out. When only a section of the drawer needs to be pulled out of the cabinet, some operators may use excessive force and accidentally pull the entire drawer out of the cabinet without being prepared to catch it. In this situation, the drawer is extremely prone to falling, often resulting in damage to electrical components or injury to the operator. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to make up for the shortcomings of the existing technology and provide a low-pressure cabinet drawer anti-fall device.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A low-pressure cabinet drawer anti-fall device includes a push plate and a baffle. The push plate is slidably connected to the side panel of the drawer in the front-to-back direction, and a guide rivet D is fixedly provided on the push plate. The baffle is slidably connected to the side panel of the drawer in the vertical direction, and an inclined guide hole D is provided on the baffle. The guide rivet D is slidably connected to the guide hole D. A spring is provided between the push plate and the side panel. When the push plate is in the initial position, the spring is in its natural state, the baffle is in the upper position and the top of the baffle is higher than the bottom surface of the upper edge of the cabinet. When the push plate moves to a characteristic position in the front-to-back direction, the spring undergoes elastic deformation, the baffle is in the lower position and the top of the baffle is lower than the bottom surface of the upper edge of the cabinet.

[0006] Furthermore, the sliding connection between the push plate and the drawer side panel in the front-back direction is as follows: the drawer side panel includes a vertical plate, and guide rivets A and B are arranged and fixed on the vertical plate in the front-back direction. The push plate is provided with guide elongated holes A and B. Guide elongated holes A and guide rivets A are matched with guide rivets A for front-back sliding guidance, and guide elongated holes B and guide rivets B are matched with guide rivets B for front-back sliding guidance.

[0007] Furthermore, the guide rivet A and guide rivet B are respectively fixed in two heat dissipation holes in a certain row of the vertical plate.

[0008] Furthermore, the way the baffle and the side panel of the drawer are slidably connected in the vertical direction is as follows: the side panel of the drawer also includes a flange, on which a guide hole is provided, and the baffle and the guide hole are slidably connected in the vertical direction.

[0009] Furthermore, a column is fixedly provided on the push plate, and the spring is a tension spring, with both ends of the spring respectively hooked onto the column and the guide rivet A.

[0010] Furthermore, a through hole is made on the front panel of the drawer, and the front end of the push plate protrudes through the through hole and overhangs at the front of the front panel; when a backward pushing force is applied to the push plate, the push plate can be moved backward to a characteristic position, and the spring is in a stretched state; after the pushing force of the push plate is removed, the push plate can be moved forward to return to the initial position under the restoring force of the spring.

[0011] The beneficial effects of this invention are as follows: By applying external force to the push plate, the push plate causes the baffle to rise to its upper position, meaning the top of the baffle is higher than the bottom surface of the upper edge of the cabinet, causing the spring to elastically deform. In this state, pulling the movable drawer unit outward will not completely pull the drawer out of the cabinet. After the external force applied to the push plate is removed, under the action of the spring's restoring force, the baffle 8 is in its lower position, meaning the top of the baffle 8 is lower than the bottom surface of the upper edge of the cabinet 9, allowing the drawer to be completely pulled out of the cabinet. Operators can operate flexibly according to work requirements, thereby preventing drawer falls and improving the safety factor of pull-out low-pressure cabinet drawers. Attached Figure Description

[0012] Figure 1 is a schematic diagram of a movable drawer unit in the prior art.

[0013] Figure 2 is a schematic diagram of the guide rivet arrangement on the movable drawer unit in an embodiment of this utility model.

[0014] Figure 3 is an enlarged view of part A in Figure 2.

[0015] Figure 4 is an enlarged view of part B in Figure 2.

[0016] Figure 5 is a schematic diagram of the push plate in an embodiment of this utility model.

[0017] Figure 6 is a schematic diagram of the baffle in an embodiment of this utility model.

[0018] Figure 7 is a schematic diagram of the installation structure of an embodiment of this utility model.

[0019] Figure 8 shows the first usage state of this utility model embodiment.

[0020] Figure 9 shows the second usage state of this utility model embodiment.

[0021] In the diagram: 1-Side panel, 101-Vertical panel, 1011-Heat dissipation hole, 102-Flanged edge, 1021-Guide hole, 2-Front panel, 201-Through hole, 3-Guide rivet A, 4-Guide rivet B, 5-Guide rivet C, 6-Push plate, 601-Guide elongated hole A, 602-Column, 603-Guide elongated hole B, 604-Guide rivet D, 7-Spring, 8-Baffle, 801-Guide elongated hole C, 802-Guide elongated hole D, 9-Eaves. Detailed Implementation

[0022] As shown in Figure 1, the drawer of the existing movable drawer unit includes an L-shaped side panel 1 and a front panel 2. The side panel 1 includes a vertical plate 101 and a flange 102. The vertical plate 101 is provided with a number of ventilation holes 1011 arranged in rows.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] A low-pressure cabinet drawer anti-fall device, as shown in Figure 7, includes a push plate 6 and a baffle 8.

[0025] As shown in Figure 5, the push plate 6 is provided with guide elongated hole A601, column 602, guide elongated hole B603 and guide rivet D604 in sequence from front to back.

[0026] As shown in Figure 6, the baffle 8 is provided with a guide elongated hole C801 and an inclined guide elongated hole D802 from top to bottom.

[0027] As shown in Figures 2-4, based on the existing movable drawer unit, guide rivets A3 and B4 are arranged and fixed to the vertical plate 101 in the front-to-back direction. The fixing method can be to directly weld rivets A3 and B4 to the vertical plate 101, or to fix guide rivets A3 and B4 in two ventilation holes 1011 in a certain row, or to drill additional holes to match and fix rivets A3 and B4. Those skilled in the art can choose according to the actual situation. In this embodiment, the most time-saving and labor-saving method is chosen, that is, fixing guide rivets A3 and B4 in two ventilation holes 1011 in a certain row. A through hole 201 is opened on the front panel 2, which allows the front end of the push plate 6 to pass through and protrude from the front of the front panel 2. A guide hole 1021 is opened on the flange 102, which allows the baffle 8 to pass through.

[0028] As shown in Figure 7, the push plate 6 passes through the through hole 201 and slides with the drawer side panel 1 in the front-back direction. The sliding connection between the push plate 6 and the drawer side panel 1 in the front-back direction is as follows: the guide elongated hole A601 matches the guide rivet A3 for front-back sliding guidance, and the guide elongated hole B603 matches the guide rivet B4 for front-back sliding guidance. The baffle 8 passes through the guide hole 1021 and matches the guide hole 1021 to achieve a vertical sliding connection. To facilitate the insertion of the baffle 8 into the guide hole 1021, a chamfer is provided at one of the rear top corners of the baffle 8. Considering that the existence of the chamfer may cause the guide hole 1021 to fail during part of the vertical sliding stroke of the baffle 8, a guide rivet C5 is fixedly installed in a heat dissipation hole 1011 on the vertical plate 101. The guide elongated hole C801 matches the guide rivet C5 for vertical sliding guidance. The push plate 6 and the baffle 8 are slidably connected by the guide rivet D604 and the guide elongated hole D802. A spring 7 is provided between the push plate 6 and the side plate 1. The spring 7 is a tension spring, and its two ends are respectively hooked onto the column 602 and the guide rivet A3.

[0029] When the push plate 6 is in the initial position, the spring 7 is in its natural state, and the baffle 8 is in the upper position with its top higher than the bottom surface of the cabinet's upper rim 9, as shown in Figure 8. In this state, when the movable drawer unit is pulled outward, the drawer will not be fully pulled out of the cabinet because the top of the baffle 8 is higher than the bottom surface of the cabinet's upper rim 9.

[0030] A backward pushing force is applied to the push plate 6, causing it to move backward to a designated position. The spring 7 then undergoes elastic deformation and is in a stretched state. The baffle 8 is positioned at the lower position, with its top lower than the bottom surface of the upper cabinet eaves 9, as shown in Figure 9. In this state, because the top of the baffle 8 is lower than the bottom surface of the upper cabinet eaves 9, the drawer can be fully pulled out of the cabinet.

[0031] After the pushing force of the push plate 6 is removed, the restoring force of the spring 7 allows the push plate 6 to move forward and return to its initial position.

Claims

1. A low-pressure cabinet drawer anti-fall device, characterized in that: Includes a push plate (6) and a baffle (8). The push plate (6) is slidably connected to the side panel (1) of the drawer in the front-back direction. A guide rivet D (604) is fixed on the push plate (6). The baffle (8) is slidably connected to the side panel (1) of the drawer in the up-down direction. An inclined guide hole D (802) is provided on the baffle (8). The guide rivet D (604) is matched and slidably connected to the guide hole D (802). A spring (7) is provided between the push plate (6) and the side panel (1). When the push plate (6) is in the initial position, the spring (7) is in the natural state, the baffle (8) is in the upper position and the top of the baffle (8) is higher than the bottom surface of the upper eaves (9) of the cabinet. When the push plate (6) moves to the characteristic position in the front-back direction, the spring (7) undergoes elastic deformation, the baffle (8) is in the lower position and the top of the baffle (8) is lower than the bottom surface of the upper eaves (9) of the cabinet.

2. The low-pressure cabinet drawer anti-fall device according to claim 1, characterized in that: The sliding connection between the push plate (6) and the side panel (1) of the drawer in the front-back direction is as follows: The side panel (1) of the drawer includes a vertical plate (101), and guide rivets A (3) and B (4) are arranged and fixed on the vertical plate (101) in the front-back direction. The push plate (6) is provided with guide elongated holes A (601) and B (603). Guide elongated holes A (601) and guide rivets A (3) are matched for front-back sliding guidance, and guide elongated holes B (603) and guide rivets B (4) are matched for front-back sliding guidance.

3. The low-voltage cabinet drawer anti-falling device according to claim 2, characterized in that: The guide rivet A (3) and guide rivet B (4) are respectively fixed in two heat dissipation holes (1011) in a certain row on the vertical plate (101).

4. The low-voltage cabinet drawer anti-falling device according to claim 2, characterized in that: The way the baffle (8) and the side panel (1) of the drawer are slidably connected in the vertical direction is as follows: the side panel (1) of the drawer also includes a flange (102), and a guide hole (1021) is provided on the flange (102). The baffle (8) and the guide hole (1021) are slidably connected in the vertical direction.

5. The low-pressure cabinet drawer anti-fall device according to claim 2, characterized in that: A column (602) is fixed on the push plate (6), and the spring (7) is a tension spring. The two ends of the spring (7) are respectively hooked onto the column (602) and the guide rivet A (3).

6. The low-pressure cabinet drawer anti-fall device according to claim 1, characterized in that: A through hole (201) is made on the front panel (2) of the drawer, and the front end of the push plate (6) passes through the through hole (201) and protrudes from the front of the front panel (2). When a backward pushing force is applied to the push plate (6), the push plate (6) can be moved backward to the characteristic position, and the spring (7) is in a stretched state. After the pushing force of the push plate (6) is removed, the push plate (6) can be moved forward to return to the initial position under the restoring force of the spring (7).

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