Drawer anti-falling device and low-voltage switch cabinet

Abstract

The utility model relates to the field of safety protection, and discloses a drawer anti-falling device and a low-voltage switch cabinet, the drawer anti-falling device comprises an anti-falling support, a connecting rod, a spring and a pull rod, the anti-falling support is rotatably installed on the inner wall of one side of a drawer, and one end of the anti-falling support is provided with a hook used for hooking a hook groove at the front end of an upper layer partition plate of the drawer; the other end of the hook is arranged as a counterweight part, and the hook extends into the upper interlayer plate by utilizing the self weight of the counterweight part; one end of the connecting rod is provided with a waist round hole, and the other end of the connecting rod is provided with a hanging hole; the counterweight part of the anti-falling bracket is provided with a limiting column; the limiting column is movably mounted in the waist round hole of the connecting rod; one end of the spring is connected with the hanging hole of the connecting rod; and the pull rod movably penetrates through the panel of the drawer. According to the utility model, the hooking relation between the anti-falling bracket and the layer partition plate can be released by pulling out the pull rod on the panel of the drawer, the operation is simple, the sight is not blocked, and meanwhile, an arc groove does not need to be formed in the side plate of the drawer.

Description

Technical Field

[0001] This utility model relates to the field of security and prevention, and in particular to a drawer anti-fall device and a low-voltage switch cabinet. Background Technology

[0002] The drawers of low-voltage switchgear contain a number of components. During maintenance, the drawers need to be pulled out to operate them. In order to prevent the drawers from falling out of the switchgear, an anti-fall mechanism needs to be installed on the drawers, and the connection between the drawers and the switchgear needs to be disconnected when necessary to remove the drawers.

[0003] Chinese patent application CN201822041715.8, filed on December 6, 2018, discloses a drawer anti-fall mechanism, which has the advantages of simple structure, convenient manufacturing, and low cost. However, this anti-fall mechanism has the following problems:

[0004] The anti-fall plate is installed on the inner side wall of the drawer cabinet. In order to facilitate its operation, an arc groove needs to be opened on the side panel of the drawer cabinet so that the handle of the anti-fall plate can extend out of the drawer, making it convenient for people to move the anti-fall plate from the outside of the drawer. If the arc groove and handle are not provided, it is necessary to reach into the drawer to operate it, which is extremely inconvenient. If the drawer is located high, it is also difficult to reach into the drawer to operate it.

[0005] Based on this, in order to solve the problems of traditional anti-fall mechanisms requiring arc grooves in the side panels of drawers and the inconvenience of operating the anti-fall plate, this application provides a drawer anti-fall device that does not require arc grooves in the side panels of drawers and is easy to operate. Utility Model Content

[0006] This invention aims to solve the technical problems existing in the prior art. Therefore, this invention provides a drawer anti-fall device that eliminates the need for arc grooves on the drawer's side panel and is easy to operate.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A drawer anti-fall device is provided, comprising an anti-fall bracket, a connecting rod, a spring, and a pull rod. The anti-fall bracket is rotatably mounted on the inner wall of one side of the drawer, with one end having a hook for hooking onto the front end of the upper shelf of the drawer, and the other end having a counterweight. The weight of the counterweight causes the hook to extend into the upper shelf. The connecting rod is rotatably mounted on the side wall of the drawer via a pin, with one end having an oblong hole and the other end having a hanging hole. The counterweight of the anti-fall bracket has a limiting post, which is movably mounted in the oblong hole of the connecting rod. One end of the spring is connected to the hanging hole of the connecting rod, and the other end is connected to the pull rod. The pull rod movably extends through the front panel of the drawer.

[0009] In some alternative embodiments, the end of the pull rod located inside the drawer is provided with a limiting block, and the end of the pull rod protruding outside the drawer is screwed with a handle.

[0010] In some alternative embodiments, a sleeve with an outwardly flanged flange is also included, the sleeve being fixedly mounted on the drawer panel, and the pull rod being movably mounted inside the sleeve.

[0011] In some alternative implementations, the link is V-shaped.

[0012] In some alternative implementations, the anti-fall bracket is a one-piece molded sheet metal part.

[0013] A low-voltage switch cabinet equipped with the aforementioned drawer anti-fall device is also provided.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention allows the anti-fall bracket to be disconnected from the shelf by pulling out a lever on the drawer panel. The operation is simple and unobstructed, and there is no need to make an arc groove on the side panel of the drawer. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is an installation structure diagram of the drawer anti-fall device provided by this utility model;

[0018] Figure 2 This is a structural diagram of the anti-fall bracket provided by this utility model;

[0019] Figure 3 This is a structural diagram of the pull rod provided by this utility model;

[0020] Figure 4 This is a structural diagram of the connecting rod provided by this utility model;

[0021] Figure 5 This is a structural diagram of the sleeve provided by this utility model;

[0022] Figure 6 This is a diagram showing the drawer anti-fall device provided by this utility model in its deactivated state.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1—Anti-fall bracket, 1.1—Hook, 1.2—Counterweight, 1.3—Limiting post, 2—Connecting rod, 2.1—Oval hole, 2.2—Hanging hole, 3—Spring, 4—Pull rod, 4.1—Limiting block, 4.2—Handle, 5—Sleeve, 10—Drawer, 20—Shelf. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Example 1

[0030] This embodiment provides a drawer anti-fall device, including an anti-fall bracket 1, a connecting rod 2, a spring 3, and a pull rod 4, wherein:

[0031] As attached Figure 1 and attached Figure 2As shown, the anti-fall bracket 1 is rotatably mounted on the inner wall of one side of the drawer 10 via a pin. One end of the bracket is provided with a hook 1.1 for hooking the front end of the upper shelf 20 of the drawer, and the other end is provided with a counterweight 1.2. The weight of the counterweight causes the hook to extend into the upper shelf. In this embodiment, the anti-fall bracket 1 is a one-piece sheet metal part.

[0032] As attached Figure 1 and attached Figure 4 As shown, the connecting rod 2 is rotatably mounted on the side wall of the drawer 10 via a pin. One end of the connecting rod has an oblong hole 2.1, and the other end has a hanging hole 2.2. Preferably, the connecting rod 2 in this embodiment is V-shaped, and the heights of the two ends can be equal or unequal, and its length is set according to the actual situation.

[0033] As attached Figure 2 As shown, the counterweight of the anti-fall bracket 1 is provided with a limiting post 1.3. The limiting post 1.3 and the anti-fall bracket 1 are detachably installed, preferably by threaded installation. The limiting post 1.3 is movably installed in the oblong hole 2.1 of the connecting rod 2. When the anti-fall bracket rotates around its pin, its limiting post can move in the oblong hole.

[0034] As attached Figure 1 As shown, one end of the spring 3 is connected to the hanging hole 2.2 of the connecting rod 2, and the other end is connected to the pull rod 4. It is used to pull the connecting rod on one hand, and can also be used to reset the pull rod on the other hand.

[0035] As attached Figure 1 and attached Figure 3 As shown, the pull rod 4 extends through the panel of the drawer 10. Preferably, in this embodiment, one end of the pull rod 4 located inside the drawer is provided with a limiting block 4.1 to prevent the pull rod from being fully pulled out, and the other end of the pull rod 4 is screwed with a handle 4.2 for easy gripping and operation.

[0036] Preferred options are listed below. Figure 1 and attached Figure 5 As shown, this embodiment also includes a sleeve 5 with an outwardly flanged edge. The sleeve 5 is fixedly installed on the panel of the drawer 10, and the pull rod 4 is movably installed inside the sleeve 5. The sleeve guides the pull rod and improves its stability.

[0037] In practical use, the drawer anti-fall device should be installed as shown in the attached diagram. Figure 1 As shown, under its own weight, the hook of the anti-fall bracket extends into the upper shelf. When the drawer is pulled out, the hook catches the front groove of the upper shelf, preventing the drawer from falling. When the drawer needs to be removed, the pull rod is pulled outward. At this time, the spring is stretched, and the connecting rod rotates under the tension of the spring, which in turn moves the counterweight of the anti-fall bracket upward, causing the hook of the anti-fall bracket to fall, as shown in the attached diagram. Figure 6As shown, this disconnects the anti-fall bracket from the shelf, allowing the drawer to be easily removed.

[0038] Application example: A low-voltage switch cabinet equipped with the drawer anti-fall device described in Embodiment 1.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A drawer anti-fall device, comprising an anti-fall bracket rotatably mounted on the inner wall of one side of the drawer, wherein one end of the anti-fall bracket is provided with a hook for hooking into the front end groove of the upper shelf of the drawer, and the other end is provided with a counterweight, the weight of which causes the hook to extend into the upper shelf; characterized in that: It also includes connecting rods, springs, and tie rods, among which: The connecting rod is rotatably mounted on the side wall of the drawer via a pin, and has an oval hole at one end and a hanging hole at the other end. The anti-fall bracket has a limit post in its counterweight part, and the limit post is movably installed in the oval hole of the connecting rod. One end of the spring is connected to the hanging hole of the connecting rod, and the other end is connected to the pull rod; The pull rod extends through the drawer panel.

2. The drawer anti-fall device according to claim 1, characterized in that: The pull rod has a limiting block at one end inside the drawer, and a handle is screwed onto the other end protruding outside the drawer.

3. The drawer anti-fall device according to claim 1, characterized in that: It also includes a sleeve with an outwardly turned edge, the sleeve being fixedly installed on the drawer panel, and the pull rod being movably installed inside the sleeve.

4. The drawer anti-fall device according to claim 1, characterized in that: The connecting rod is V-shaped.

5. The drawer anti-fall device according to claim 1, characterized in that: The anti-fall bracket is a one-piece molded sheet metal part.

6. A low-voltage switchgear, characterized in that: The drawer is equipped with the anti-fall device as described in any one of claims 1 to 5.

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