Anti-falling electric cabinet drawer and low-voltage switch cabinet

Abstract

The utility model relates to the technical field of low-voltage cabinet drawers, in particular to an anti-falling electric cabinet drawer and a low-voltage switch cabinet, which comprise a drawer box for storing electrical components and an anti-falling assembly, the anti-falling assembly is assembled on the side wall of the drawer box and is used for clamping a cabinet body cross beam, and the anti-falling assembly comprises a support, a connecting rod and a shifting block. The shifting block is connected with one end, close to a panel of the drawer box, of the support, at least part of the shifting block is exposed out of the side wall of the drawer box, the other end of the support protrudes upwards to be provided with a hook portion used for clamping a cabinet beam, the side wall, facing the drawer box, of the support is provided with a through hole, the through hole is located between the hook portion and the shifting block, and the through hole and the connecting rod are rotationally assembled. One end of the connecting rod is connected with the side wall of the drawer box, the gravity of the end, connected with the shifting block, of the support is larger than that of the end, provided with the hook part, of the support, drawer falling caused by too large force when the drawer is pulled is prevented, stability in the drawer pulling process is improved, and operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage cabinet drawers, in particular to an anti-falling electric cabinet drawer and a low-voltage switch cabinet. Background Technique

[0002] The low-voltage switch cabinet is an electrical device widely used in industries such as power plants, petroleum, chemical industry, metallurgy, textile, and high-rise buildings. It is mainly used for power transmission, distribution, and power conversion. The low-voltage switch cabinet consists of a cabinet body and multiple drawable drawer units. Each drawer unit is used to store electronic components such as circuit breakers, contactors, and relays to achieve the functions of circuit control, protection, and monitoring.

[0003] The design and performance of the low-voltage switch cabinet are directly related to the stable operation of the power system and the safety of operators. In the existing low-voltage switch cabinets, the drawers and the cabinet body adopt a sliding assembly method. When the drawer is pulled out from the cabinet body, it is difficult for the operator to accurately control the force. Once the force is too large, the drawer is likely to slide out of the cabinet body directly due to inertia, resulting in the drawer falling. The falling of the drawer not only causes injuries to the operator but also may damage the surrounding equipment, affecting the normal operation of the low-voltage switch cabinet. Seriously, the electrical components in the drawer are easily impacted during the falling process, resulting in component damage or failure, increasing the maintenance cost and downtime. Summary of the Utility Model

[0004] In order to improve the stability of the drawer when pulling out the drawer of the low-voltage switch cabinet and ensure that the drawer will not fall due to excessive force during the pulling-out process, this application provides an anti-falling electric cabinet drawer and a low-voltage switch cabinet.

[0005] In the first aspect, a kind of anti-falling electric cabinet drawer provided by the utility model adopts the following technical scheme:

[0006] An anti-falling electric cabinet drawer includes a drawer box for storing electrical components, and further includes an anti-falling component. The anti-falling component is assembled on the side wall of the drawer box and is used for clamping the cross beam of the cabinet body. The anti-falling component includes a bracket, a connecting rod, and a dial block. The dial block is connected to one end of the bracket close to the drawer box panel, and at least part of the dial block is exposed outside the side wall of the drawer box. The other end of the bracket is convexly provided with a hook part for clamping the cross beam of the cabinet body. A through hole is opened on the side wall of the bracket facing the drawer box. The through hole is located between the hook part and the dial block. The through hole is rotationally assembled with the connecting rod. One end of the connecting rod is connected to the side wall of the drawer box. The gravity of the end of the bracket connected with the dial block is greater than that of the end of the bracket provided with the hook part.

[0007] Preferably, a weight-reducing groove is opened on one side of the bracket close to the hook part, and the weight-reducing groove is recessed from the bottom wall of the bracket towards the through hole.

[0008] Preferably, the linear distance between the center of the through hole and the end of the bracket where the hook portion is provided is L1, and the linear distance between the center of the through hole and the end of the bracket where the dial block is connected is L2, and L1 / L2 = 1 / 2 to 3 / 5

[0009] Preferably, a groove is formed in the bottom wall of the bracket, the groove is recessed toward the dial block, and the cross-sectional area of the groove is smaller than the cross-sectional area of the weight reduction groove.

[0010] Preferably, an avoidance groove is formed in the top wall of the bracket, the avoidance groove is located between the through hole and the end of the bracket where the dial block is connected, and the cross-sectional area of the avoidance groove is smaller than the cross-sectional area of the avoidance groove.

[0011] Preferably, there are two sets of brackets, the two sets of brackets are respectively assembled on the inner and outer sides of the drawer box, the two sets of brackets are connected by screws, and the connecting rod is rotationally assembled with the two sets of brackets.

[0012] Preferably, a through hole for passing through a screw is formed in the side wall of the drawer box, the through hole is arranged above the dial block, and the through hole extends upward and is gradually inclined.

[0013] Preferably, the hook portion is provided with a clamping protrusion, and the clamping protrusion gradually protrudes obliquely from the top wall of the hook portion toward the panel of the drawer box.

[0014] Preferably, a guiding inclined surface is provided on the side wall of the hook portion away from the panel of the drawer box, and the guiding inclined surface is gradually inclined downward from the clamping protrusion.

[0015] In a second aspect, a low-voltage switchgear provided by the present invention adopts the following technical solution:

[0016] A low-voltage switchgear includes a cabinet body and the above-mentioned anti-falling electric cabinet drawer. The cabinet body is provided with an assembly space for assembling the drawer, and a cross beam is arranged above the opening of the assembly space. When the drawer is pulled out, the hook portion is clamped with the cross beam.

[0017] The beneficial effects of the present invention are as follows:

[0018] Through the anti-falling component, the problem of improper control of the force when the drawer is pulled out is solved. The hook portion is exposed on the top wall of the drawer box, so that when the drawer is pulled outwards, the hook portion of the bracket can hook the cross beam of the cabinet body, thereby preventing the drawer from falling, improving the operation safety, preventing the drawer from falling due to excessive force when pulling out the drawer, causing the drawer to injure people or the electronic components in the drawer to fall and be damaged, reducing the risk of personnel injury, improving the stability during the process of pulling out the drawer, and reducing the risk of damage to the internal electrical components due to falling;

[0019] The rotation assembly of the connecting rod and the through hole enables the bracket to form a lever structure, which facilitates the disengagement and disassembly of the hook part of the bracket from the cross beam of the cabinet body, is conducive to quickly and conveniently overhauling the electrical components of the drawer box, ensuring the maintenance efficiency. In addition, through the installation method of the anti-falling component assembled on the side wall of the drawer box by the bracket, the structure is compact, the space utilization rate is high, the occupation of the accommodation space of the drawer box is reduced, the storage capacity of the drawer is ensured, and it is convenient to retrofit or install the anti-falling component on the conventional drawer box. Description of the Drawings

[0020] Figure 1 is the right-side perspective view in Embodiment 1 of the present application;

[0021] Figure 2 is the present application Figure 1 The partial enlarged view at A in;

[0022] Figure 3 is the left-side perspective view in Embodiment 1 of the present application;

[0023] Figure 4 is the partial perspective view in Embodiment 1 of the present application;

[0024] Figure 5 is the first perspective view of the anti-falling component in Embodiment 1 of the present application;

[0025] Figure 6 is the second perspective view of the anti-falling component in Embodiment 1 of the present application;

[0026] Figure 7 is the front view of the bracket in Embodiment 1 of the present application;

[0027] Figure 8 is the perspective view of the low-voltage switchgear in Embodiment 2 of the present application;

[0028] Figure 9 is the schematic diagram of the drawer being pulled out in Embodiment 2 of the present application.

[0029] Description of the reference numerals: 1. Drawer box; 101. Through hole; 2. Bracket; 201. Hook part; 2021. Clamping protrusion; 2022. Guide slope; 204. Groove; 205. Avoidance groove; 3. Connecting rod; 4. Dial block; 5. Screw; 6. Cabinet body; 601. Cross beam; 602. Assembly space. Detailed Description of the Embodiment

[0030] This part will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, so as to visually and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0031] In the description of the present application, if orientation descriptions are involved, such as "upper", "lower", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. When a feature is referred to as "arranged", "fixed", or "connected" to another feature, it can be directly arranged, fixed, or connected to the other feature, or indirectly arranged, fixed, or connected to the other feature.

[0032] In the description of the present application, if "several" is involved, its meaning is one or more; if "multiple" is involved, its meaning is more than two; if "greater than", "less than", or "exceeding" is involved, it should be understood as not including the corresponding number; if "above", "below", or "within" is involved, it should be understood as including the corresponding number. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, rather than indicating or implying relative importance or implicitly specifying the quantity of the indicated technical feature or the sequence relationship of the indicated technical features.

[0033] In addition, unless otherwise defined, the technical terms and scientific terms used in the present application have the same meanings as those generally understood by those skilled in the technical field to which the present application pertains. The terms used in the present application are only for describing specific embodiments, rather than limiting the present application. It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0034] Example 1: As Figures 1-9As shown, an anti-falling electric cabinet drawer includes a drawer box 1 for storing and discharging device elements, and also includes an anti-falling component, which is assembled on the side wall of the drawer box 1 and is used to clamp the cabinet body 6 cross beam 601, the anti-falling component includes a bracket 2, a connecting rod 3, and a shifting block 4, the shifting block 4 is connected to one end of the bracket 2 close to the drawer box 1 panel, and at least part of the shifting block 4 is exposed on the side wall of the drawer box 1, the other end of the bracket 2 is protruding upward and is provided with a hook portion 201 for clamping the cabinet body 6 cross beam 601, the bracket 2 is provided with a through hole facing the side wall of the drawer box 1, the through hole is located between the hook portion 201 and the shifting block 4, the through hole is rotatably assembled with the connecting rod 3, so that the bracket 2 forms a lever structure, and one end of the connecting rod 3 is connected to the side wall of the drawer box 1. The weight of the end of the bracket 2 connected to the shift block 4 is greater than the end of the bracket 2 provided with the hook 201, so that, in a normal state, that is, when there is no external force to shift the shift block 4, the hook 201 is exposed on the top wall of the drawer box 1, so that when the drawer is pulled out, the hook 201 of the bracket 2 can hook the crossbeam 601 of the cabinet 6, thereby preventing the drawer from falling. When the drawer needs to be removed from the cabinet 6 and the electrical components in the drawer box 1 are repaired, the drawer is pulled out until the bracket 2 is connected to the crossbeam 601 of the cabinet 6, and the shift block 4 is manually shifted. Under the action of the lever of the bracket 2, the hook 201 of the bracket 2 is sunken into the top wall of the drawer box 1, thereby pulling the drawer out.

[0035] The anti-fall component is used to solve the problem of improper force control when pulling out the drawer, improve operational safety, and prevent the drawer from falling due to excessive force when pulling out the drawer, causing the drawer to hit people or the electronic components in the drawer to fall and be damaged, thereby reducing the risk of personal injury, improving the stability of the drawer during withdrawal, and reducing the risk of internal electrical components being damaged due to falling; secondly, the bracket 2 forms a lever structure through the rotation assembly of the connecting rod 3 and the through hole, which is convenient for the hook 201 of the bracket 2 and the crossbeam 601 of the cabinet 6 to be disengaged and disassembled, which is conducive to quick and convenient inspection and maintenance of the electrical components of the drawer box 1, ensuring maintenance efficiency; thirdly, the installation method of the anti-fall component in which the bracket 2 is assembled on the side wall of the drawer box 1 has a compact structure and high space utilization, which reduces the occupation of the drawer box 1 accommodating space, ensures the storage capacity of the drawer, and is convenient for modifying the conventional drawer box 1 or adding the anti-fall component.

[0036] The shifting block 4 is made of insulating material, such as plastic, to prevent the risk of electric shock when a person shifts the shifting block 4. Of course, the handle of the drawer box 1 is also made of insulating material.

[0037] At one end of the bracket 2 where the shifting block 4 is connected, the gravity is greater than that at the end of the bracket 2 where the hook portion 201 is provided. In terms of the specific structure, a weight-reducing groove is formed on the side of the bracket 2 close to the hook portion 201. The weight-reducing groove is recessed from the bottom wall of the bracket 2 towards the through hole. Since the bracket 2 is made of the same material, by providing a weight-reducing groove on the side of the bracket 2 close to the hook portion 201, the solid part on the side close to the hook portion 201 is smaller than the solid part near the shifting block 4, so that the gravity at the end of the bracket 2 where the shifting block 4 is connected is greater than that at the end of the bracket 2 where the hook portion 201 is provided. This ensures that without the action of an external force to shift the shifting block 4, the hook portion 201 is in a state of being exposed outside the top wall of the drawer box 1. Thus, when the drawer is pulled out, the hook portion 201 can be clamped on the cross beam 601 of the cabinet body 6 to prevent the drawer from falling. By providing the weight-reducing groove, the gravity difference between the two ends of the bracket 2 is ensured, so that the bracket 2 always maintains the state where the hook portion 201 is exposed without an external force, thereby improving the reliability of the anti-falling function of the drawer.

[0038] It is worth mentioning that in order to ensure the stability of the assembly of the through hole and the connecting rod 3, a solid part is left between the weight-reducing groove and the through hole, that is, the weight-reducing groove is not communicated with the through hole, so as to ensure the stability of the assembly of the connecting rod 3.

[0039] In order to further ensure that the hook portion 201 of the bracket 2 remains exposed outside the top wall of the drawer box 1 without an external force, the linear distance between the center of the through hole and the end of the bracket 2 where the hook portion 201 is provided is L1, and the linear distance between the center of the through hole and the end of the bracket 2 where the shifting block 4 is connected is L2. L1 / L2 = 1 / 2 - 3 / 5. Preferably, L1 / L2 = 27 / 50. By designing the force arm of the bracket 2, the moment on the side of the bracket 2 where the hook portion 201 is provided is made smaller than the moment on the side of the bracket 2 where the shifting block 4 is connected, so as to ensure that the hook portion 201 of the bracket 2 remains exposed outside the top wall of the drawer box 1 without an external force, reduce the risk of accidental falling of the drawer when it is pulled out, and improve the operation safety.

[0040] When the drawer needs to be disengaged from the cabinet body 6, the operator needs to move the shifting block 4. If the gravity on the side of the bracket 2 connected with the shifting block 4 is too large, it is not convenient for the operator to move it. In order to optimize the force on the side of the bracket 2 connected with the shifting block 4, a groove 204 is opened on the bottom wall of the bracket 2. The groove 204 is recessed towards the shifting block 4. The cross-sectional area of the groove 204 is smaller than that of the weight-reducing groove. Specifically, the cross-sectional area of the groove 204 is 1 / 8 to 1 / 12 of the cross-sectional area of the weight-reducing groove. Preferably, the cross-sectional area of the groove 204 is 1 / 10 of the cross-sectional area of the weight-reducing groove. Since the bracket 2 is made of the same material and has a uniform wall thickness, by designing the areas of the weight-reducing groove and the groove 204, the weights on both sides of the bracket 2 can be controlled to a certain extent, so as to ensure that under the condition of no external force, the hook portion 201 remains exposed on the top wall of the drawer box 1. By opening the groove 204 on the bracket 2 connected with the shifting block 4, the force required to lift the shifting block 4 and lower the hook portion 201 to the drawer box 1 is reduced, which is convenient for operation.

[0041] In actual use, the cabinet body 6 is equipped with multiple groups of drawers. The multiple groups of drawers are stacked one above the other in sequence and are respectively slidably assembled with the cabinet body 6. In order to avoid interference between the bracket 2 of this layer and the bottom wall of the upper drawer when the shifting block 4 is moved to disassemble the drawer, a relief groove 205 is opened on the top wall of the bracket 2. The relief groove 205 is located between the through hole and the end of the bracket 2 connected with the shifting block 4. The cross-sectional area of the relief groove 205 is smaller than that of the relief groove 205. Specifically, the sum of the cross-sectional areas of the relief groove 205 and the groove 204 is smaller than that of the weight-reducing groove. The cross-sectional area of the relief groove 205 is 1 / 5 to 1 / 6 of the cross-sectional area of the weight-reducing groove, so as to ensure that under the condition of no external force, the hook portion 201 remains exposed on the top wall of the drawer box 1. Through the design of the relief groove 205, when the shifting block 4 drives the bracket 2 to move upward, it will not interfere with the upper drawer, improving the rationality of the anti-falling structure design and the stability of use, and facilitating the modification or installation of the anti-falling component on the conventional drawer box 1.

[0042] In order to improve the assembly stability of the bracket 2 and the side wall of the drawer box 1, two groups of brackets 2 are provided. The two groups of brackets 2 are respectively assembled on the inner and outer sides of the drawer box 1. The two groups of brackets 2 are connected by screws 5. The connecting rod 3 is rotatably assembled with the through holes of the two groups of brackets 2. The shifting block 4 is connected to the side wall of the outer bracket 2. An activity hole is opened on the top wall of the drawer box 1. The activity hole corresponds to the hook portion 201 of the outer bracket 2 and is used for the up and down movement of the hook portion 201 of the outer bracket 2. By providing two groups of inner and outer brackets 2, the assembly stability of the bracket 2 and the side wall of the drawer box 1 is improved, and the structural stability of the anti-falling component is improved.

[0043] In terms of the specific structure of the assembly of the two sets of brackets 2, through holes 101 for passing screws 5 are provided on the side walls of the drawer box 1. The through holes 101 are arranged above the dial blocks 4, extend upward and are gradually inclined. The two sets of brackets 2 are an inner bracket 2 and an outer bracket 2 respectively. The inner bracket 2 is assembled on the inner side of the side wall of the drawer box 1, and the outer bracket 2 is assembled on the outer side of the side wall of the drawer box 1. Through holes 101 for passing screws 5 are provided on the side walls of the drawer box 1. The screws 5 pass through the outer bracket 2, the through holes 101, and the inner bracket 2 in sequence and are threadedly connected to nuts, thereby connecting the inner bracket 2 and the outer bracket 2. Of course, there are gaps between the inner bracket 2 and the side wall of the drawer box 1, and between the outer bracket 2 and the side wall of the drawer box 1 to ensure that the brackets 2 can swing up and down normally. The diameter of the through holes 101 is larger than the outer diameter of the screws 5, so that when the brackets 2 move up and down, the screws 5 move in the through holes 101, thus playing a certain limiting role.

[0044] It is worth noting that there are two sets of screws 5, and the two sets of screws 5 are respectively located at both ends of the bracket 2, thereby ensuring the stability of the connection of the two sets of brackets 2.

[0045] Another implementation mode of this embodiment is that the inner bracket 2 is provided with a weight-reducing groove 203, a groove 204, and an avoidance groove 205. The bottom wall of the outer bracket 2 is turned outward to form a dial block 4, and the outer bracket 2 is provided with a weight-reducing groove 203.

[0046] In terms of the specific structural design of the hook portion 201, the hook portion 201 is provided with a clamping protrusion 2021. The clamping protrusion 2021 gradually protrudes obliquely from the top wall of the hook portion 201 towards the panel of the drawer box 1. By providing the clamping protrusion 2021, the stability of the connection between the bracket 2 and the cross beam 601 of the cabinet body 6 is improved, and the anti-falling effect of the drawer is enhanced. It should be noted that the cross beam 601 of the cabinet body 6 is usually made of aluminum profile, so it has a long strip groove. The clamping protrusion 2021 is clamped with the long strip groove of the cross beam 601, thereby enhancing the reliability of the anti-falling of the drawer.

[0047] In order to facilitate the installation of the drawer back into the cabinet body 6 and reduce the direction of interference between the hook portion 201 and the cross beam 601 of the cabinet body 6, a guiding inclined surface 2022 is provided on the side wall of the hook portion 201 away from the panel of the drawer box 1. The guiding inclined surface 2022 gradually inclines downward from the clamping protrusion 2021. When the drawer is installed back into the cabinet body 6, the guiding inclined surface 2022 abuts against the cross beam 601 of the cabinet body 6, and the cross beam 601 of the cabinet body 6 applies a downward force to the guiding inclined surface 2022, causing the hook portion 201 to sink below the top wall of the drawer box 1, so that the drawer can be smoothly installed into the cabinet body 6, reducing the difficulty of installing the drawer back and improving the efficiency of installing the drawer back.

[0048] Embodiment 2: As Figures 1-9As shown in the figure, a low-voltage switchgear cabinet includes a cabinet body 6, and an anti-falling electrical cabinet drawer in Embodiment 1. The cabinet body 6 is provided with an assembly space 602 for assembling the drawer. Above the opening of the assembly space 602, a cross beam 601 is provided. When the drawer is pulled out, the hook portion 201 is clamped with the cross beam 601.

[0049] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A fall-proof electrical cabinet drawer, comprising a drawer box for storing and discharging electrical components, characterized in that: The anti-falling component is also included, which is installed on the side wall of the drawer box and is used to clamp the cabinet crossbeam. The anti-falling component includes a bracket, a connecting rod, and a shift block. The shift block is connected to one end of the bracket close to the drawer box panel, and at least part of the shift block is exposed from the side wall of the drawer box. The other end of the bracket protrudes upward and is provided with a hook portion for clamping the cabinet crossbeam. The bracket is provided with a through hole facing the side wall of the drawer box, and the through hole is located between the hook portion and the shift block. The through hole is rotatably assembled with the connecting rod, and one end of the connecting rod is connected to the side wall of the drawer box. The gravity of the end of the bracket connected to the shift block is greater than that of the end of the bracket provided with the hook portion.

2. The anti-falling electrical cabinet drawer according to claim 1, characterized in that: A weight-reducing groove is provided on one side of the bracket close to the hook portion, and the weight-reducing groove is recessed from the bottom wall of the bracket toward the through hole.

3. The anti-falling electrical cabinet drawer according to claim 1, characterized in that: The straight-line distance between the center of the through hole and the end of the bracket provided with the hook portion is L1, and the straight-line distance between the center of the through hole and the end of the bracket connected with the shift block is L2, and L1 / L2=1 / 2-3 / 5.

4. The anti-falling electrical cabinet drawer according to claim 2, characterized in that: The bottom wall of the bracket is provided with a groove, the groove is recessed toward the shifting block, and the cross-sectional area of ​​the groove is smaller than the cross-sectional area of ​​the weight-reducing groove.

5. The anti-falling electrical cabinet drawer according to claim 4, characterized in that: The top wall of the bracket is provided with an escape groove, the escape groove is located between the through hole and one end of the bracket connected with the shift block, and the cross-sectional area of ​​the escape groove is smaller than the cross-sectional area of ​​the escape groove.

6. The anti-falling electrical cabinet drawer according to claim 1, characterized in that: The brackets are provided in two groups, and the two groups of brackets are respectively assembled on the inner and outer sides of the drawer box, the two groups of brackets are connected by screws, and the connecting rod is rotatably assembled with the two groups of brackets.

7. The anti-falling electrical cabinet drawer according to claim 6, characterized in that: The side wall of the drawer box is provided with a through hole for inserting a screw, the through hole is arranged above the shifting block, and the through hole extends upward and is gradually inclined.

8. The anti-falling electrical cabinet drawer according to claim 1, characterized in that: The hook portion is provided with a clamping protrusion, and the clamping protrusion is gradually inclined and protruded from the top wall of the hook portion toward the panel of the drawer box.

9. The anti-falling electrical cabinet drawer according to claim 8, characterized in that: A guide slope is arranged on the side wall of the hook away from the drawer box panel, and the guide slope is arranged to be gradually inclined downward from the clamping protrusion.

10. A low voltage switch cabinet, characterized in that: It comprises a cabinet body and an anti-falling electric cabinet drawer as claimed in any one of claims 1 to 9, wherein the cabinet body is provided with an assembly space for assembling the drawer, a crossbeam is provided above the opening of the assembly space, and when the drawer is pulled out, the hook is engaged with the crossbeam.

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