Deodorizing shoe box

By designing fixed components and lamp mechanisms in the shoe box, the problem of inconvenience of taking off the adsorbent and staining the shoes and replacing them is solved, and the stability, safety and disinfection effect are improved.

CN223149260UActive Publication Date: 2025-07-25WENZHOU HENGYANG PRINTING CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422534246.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-21
Publication Date
2025-07-25
Estimated Expiration
2034-10-21

AI Technical Summary

Technical Problem

In the existing deodorizing shoe boxes, the adsorbent is not firm enough, and it is easy to take off during collision or transportation, which will stain the shoes and shoe boxes, and it will be inconvenient to replace.

Method used

A deodorizing shoe box is designed, which includes a box body, a deodorizing mechanism and a lamp mechanism. The deodorizing mechanism fixes the deodorizing box through a fixed assembly to prevent it from being detached. The lamp mechanism is used for disinfection, and the box body is equipped with breathable holes to enhance air circulation.

Benefits of technology

Effectively fix the adsorbent to prevent the shoes from being taken out and dirty, improve stability and safety, and at the same time facilitate the replacement and cleaning of the adsorbent, enhance the disinfection effect, and improve the user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223149260U_ABST
    Figure CN223149260U_ABST
Patent Text Reader

Abstract

The utility model belongs to the technical field of shoe boxes, in particular to a deodorization shoe box, which is characterized by comprising a box body, the box body comprises two side plates arranged on two sides of the box body, and vent holes are arranged on the side plates; the top cover is arranged at the top of the box body; the deodorizing mechanism is arranged in the box body and comprises a storage groove, a deodorizing box and a fixing assembly, the storage groove is formed in the bottom of the box body, the deodorizing box is arranged in the storage groove, an adsorbent is arranged in the deodorizing box, a plurality of air holes are formed in the deodorizing box, a fixing groove is formed in the deodorizing box, one end of the fixing assembly is arranged on the outer side of the storage groove, and the other end of the fixing assembly is arranged in the storage groove. The other end penetrates through the side wall of the storage groove and is inserted into the fixing groove; the lamp mechanism is arranged at the bottom of the top cover; the fixing assembly is used for fixing the deodorizing box, and the lamp mechanism is used for disinfecting the shoes. The shoebox has the advantages that the adsorbents in the shoebox can be effectively fixed, the adsorbents are prevented from falling off to contaminate and contaminate shoes and the shoebox, and meanwhile the adsorbents are convenient to install and replace.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model belongs to the technical field of shoe boxes, and particularly relates to a deodorant shoe box. Background Art

[0002] A shoe box is an outer packaging item for shoes and is also an essential packaging item for personal collection, sorting, and placing shoes. When shoes are placed in the shoe box, since the shoes may contain substances such as sweat, an odor is generated after the shoes are placed. Generally, adsorbents such as activated carbon are placed in the deodorant shoe box to adsorb the odor of the shoes.

[0003] However, since the adsorbent is usually disposable, the existing deodorant shoe box does not hold the adsorbent firmly enough. When the shoe box is bumped, the adsorbent may fall out and come into contact with the shoes, soiling the shoes and the shoe box, which affects the safety of storing shoes in the shoe box. Since the adsorbent is usually disposable, it is also troublesome to replace the adsorbent after it is used up. Content of the Utility Model

[0004] The purpose of the utility model is to provide a deodorant shoe box for the above-mentioned existing technical problems, which can effectively fix the adsorbent in the shoe box, prevent the adsorbent from falling off and soiling the shoes and the shoe box, and at the same time facilitate the installation and replacement of the adsorbent.

[0005] The purpose of the utility model is achieved as follows: A deodorant shoe box includes a box body, and the box body includes:

[0006] Two side plates are arranged on both sides of the box body, and ventilation holes are provided on the side plates;

[0007] A top cover is arranged on the top of the box body;

[0008] A deodorizing mechanism is arranged in the box body. The deodorizing mechanism includes a placement groove, a deodorizing box, and a fixing component. The placement groove is arranged at the bottom of the box body, the deodorizing box is arranged in the placement groove, an adsorbent is arranged in the deodorizing box, a plurality of ventilation holes are provided on the deodorizing box, a fixing groove is provided on the deodorizing box, and one end of the fixing component is arranged outside the placement groove and the other end passes through the side wall of the placement groove and is inserted into the fixing groove;

[0009] A lamp mechanism is arranged at the bottom of the top cover;

[0010] Wherein, the fixing component is used to fix the deodorizing box, and the lamp mechanism is used to disinfect the shoes.

[0011] The utility model is further arranged as: The fixing component includes:

[0012] An installation cavity is arranged in the side wall of the placement groove;

[0013] A fixing column, one end of the fixing column is arranged outside the placing groove, the other end penetrates through the installation cavity and is inserted into the fixing groove, a limiting ring is arranged on the fixing column, and the limiting ring is slidably connected with the inner wall of the installation cavity.

[0014] The present utility model is further arranged as: the fixing assembly further includes:

[0015] An elastic member, which is arranged at one end of the limiting ring away from the placing groove, one end of the elastic member abuts against the limiting ring, and the other end abuts against the inner wall of the installation cavity.

[0016] The present utility model is further arranged as: the lamp mechanism includes:

[0017] A lighting lamp strip, which is arranged at the bottom of the top cover;

[0018] An ultraviolet lamp strip, which is arranged at the bottom of the top cover, and a plurality of the lighting lamp strips and the ultraviolet lamp strips are arranged at intervals along the width direction of the top cover.

[0019] The present utility model is further arranged as: further includes:

[0020] A bottom plate, which is arranged at the bottom of the box body, support protrusions are arranged at the bottom of the bottom plate, a connecting groove is arranged at the top of the top cover, and the support protrusions and the connecting groove are adapted in structure.

[0021] The present utility model is further arranged as: a placing plate is arranged above the bottom plate, sliding grooves are arranged on opposite sides of the two side plates, the placing plate is inserted into the sliding grooves, and the placing plate is slidably connected with the sliding grooves.

[0022] The present utility model is further arranged as: further includes:

[0023] A front cover, which is arranged on the box body, the bottom of the front cover is hinged to the two side plates, a clamping groove is arranged at the top of the front cover, a clamping protrusion is arranged below the top cover, and the clamping protrusion is clamped with the clamping groove.

[0024] By adopting the above technical solutions, the present utility model has at least the following beneficial effects:

[0025] 1. An adsorbent is arranged in the deodorizing box, and ventilation holes are arranged on the deodorizing box. The adsorbent can adsorb the odor of the shoes in the shoe box. The fixing assembly cooperates with the fixing groove. The fixing assembly is inserted into the fixing groove to fix the deodorizing box in the placing groove, preventing the shoe box from being impacted or shaken during transportation, causing the deodorizing box to fall out of the placing groove and dirtying the shoes in the shoe box, improving the stability and safety of the shoe box. A lamp mechanism is arranged in the shoe box, which can disinfect the shoes in the shoe box, further improving the deodorizing effect of the deodorizing shoe box on the shoes.

[0026] 2. The shoe box is provided with a lamp mechanism. The ultraviolet lamp strip can disinfect the shoes in the shoe box, and the lighting lamp strip can illuminate the shoe box, facilitating the user to display and appreciate the shoes. The lighting lamp strip and the ultraviolet lamp strip are arranged at intervals, which can make the disinfection effect of the ultraviolet lamp strip and the lighting effect of the lighting lamp strip more uniform.

[0027] 3. Through the cooperation of the fixing column, the limiting ring and the elastic member of the fixing component, the user can unlock the fixing of the fixing column to the deodorizing box by pulling the end of the fixing column away from the placing groove outward, and can disassemble and replace the deodorizing box. The operation is convenient and fast. At the same time, the elastic member can reset the pulled fixing column, further improving the convenience of the operation. And the elastic member can apply a pressure towards the fixing groove to the fixing column when the fixing column is inserted into the fixing groove, preventing the fixing column from sliding during fixing and improving the stability of the fixing of the fixing column.

[0028] 4. A placing plate is arranged above the bottom plate. The placing plate is slidably connected with the sliding groove. Shoes can be placed on the placing plate. When the deodorizing shoe box is used for a long time, the dirt on the soles will adhere to the placing plate. When cleaning the shoe box, the placing plate can be directly pulled out and cleaned without disassembling the whole shoe box, which is convenient for cleaning and improves the maintenance efficiency. Description of the Drawings

[0029] Figure 1 is a schematic diagram of the deodorizing shoe box of the present utility model;

[0030] Figure 2 is a schematic diagram of the deodorizing box of the present utility model;

[0031] Figure 3 is a sectional view of the fixing component of the present utility model;

[0032] Figure 4 is a schematic diagram of the top cover of the present utility model;

[0033] Figure 5 is a schematic diagram of the bottom plate of the present utility model;

[0034] Figure 6 is an enlarged view of part A of the present utility model;

[0035] Figure 7 is a schematic diagram of the placing plate of the present utility model;

[0036] Figure 8 is a schematic diagram of the front cover of the present utility model;

[0037] Figure 9 is a sectional view of the clamping groove of the present utility model;

[0038] The reference numerals in the figure are: 1 - side plate, 2 - top cover, 3 - deodorizing mechanism, 4 - lamp mechanism, 5 - bottom plate, 6 - front cover, 11 - ventilation hole, 12 - sliding groove, 21 - connecting groove, 22 - clamping projection, 31 - storage groove, 32 - deodorizing box, 33 - fixing component, 34 - fixing groove, 35 - installation cavity, 36 - fixing column, 37 - limiting ring, 38 - elastic member, 41 - illuminating light bar, 42 - ultraviolet light bar, 51 - supporting projection, 52 - placing plate, 61 - clamping groove, 321 - ventilation hole. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0040] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further described in subsequent drawings.

[0041] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. Refer to Figures 1-9 :

[0042] Embodiment 1.

[0043] This embodiment provides a deodorizing shoe box, including a box body, and the box body includes:

[0044] Two side plates 1, arranged on both sides of the box body, and ventilation holes 11 are provided on the side plates 1;

[0045] A top cover 2, arranged on the top of the box body;

[0046] The deodorizing mechanism 3 is arranged inside the box body. The deodorizing mechanism 3 includes a placement groove 31, a deodorizing box 32 and a fixing component 33. The placement groove 31 is arranged at the bottom of the box body. The deodorizing box 32 is arranged inside the placement groove 31. An adsorbent is provided inside the deodorizing box 32. A plurality of ventilation holes 321 are provided on the deodorizing box 32. A fixing groove 34 is provided on the deodorizing box 32. One end of the fixing component 33 is arranged outside the placement groove 31, and the other end passes through the side wall of the placement groove 31 and is inserted into the fixing groove 34.

[0047] The lamp mechanism 4 is arranged at the bottom of the top cover 2.

[0048] Among them, the fixing component 33 is used to fix the deodorizing box 32, and the lamp mechanism 4 is used to disinfect shoes.

[0049] As Figures 1-3 As shown in Figures 4 and 5, the deodorizing mechanism 3 is arranged at a corner of the bottom plate 5. The placement groove 31 and the bottom plate 5 are integrally designed. The placement groove 31 is used to place the deodorizing box 32. An adsorbent is provided inside the deodorizing box 32. A plurality of ventilation holes 321 are evenly provided on the deodorizing box 32. The adsorbent cooperates with the ventilation holes 321 to absorb the peculiar smell generated by the shoes in the shoe box, so as to achieve the effect of deodorization.

[0050] A fixing groove 34 is provided on the deodorizing box 32. One end of the fixing component 33 is arranged outside the placement groove 31, and the other end passes through the side wall of the placement groove 31 and is inserted into the fixing groove 34, so as to fix the deodorizing box 32, prevent the deodorizing box 32 from falling out of the placement groove 31 during the transportation or collision of the shoe box, effectively fix the adsorbent in the shoe box, so as to cause the adsorbent to fall and stain and dirty the shoes and the shoe box, and improve the safety and stability of the deodorizing mechanism 3.

[0051] When the adsorbent in the deodorizing box 32 is used up, the user can control the fixing component 33 to disengage from the fixing groove 34, then take out the deodorizing box 32 from the placement groove 31, replace the adsorbent in the deodorizing box 32, and then put the deodorizing box 32 back into the placement groove 31 and control the fixing component 33 to be inserted into the fixing groove 34 again, and the disassembly and assembly of the deodorizing box 32 can be completed. It is convenient to operate and can improve the maintenance efficiency and reduce the maintenance cost at the same time.

[0052] The lamp mechanism 4 is arranged at the bottom of the top cover 2. The lamp mechanism 4 can perform ultraviolet disinfection and sterilization on the shoes in the shoe box, further improving the deodorization effect of the deodorizing shoe box.

[0053] Ventilation holes 11 are provided on the side plate 1, which can effectively enhance the air circulation inside and outside the shoe box, promote the discharge of moisture in the shoe box, keep the environment inside the shoe box dry, and enhance the protection and storage effect of the shoe box on the shoes.

[0054] The adsorbent can be substances such as activated carbon and nanocrystalline ore, which can adsorb the odor of shoes, are harmless to the human body, and have strong odor removal ability. At the same time, it can also be substances such as solid air fresheners, which can make the shoes have a pleasant smell while deodorizing.

[0055] Embodiment 2:

[0056] This embodiment provides a deodorizing shoe box. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0057] The fixing component 33 includes:

[0058] The installation cavity 35 is arranged in the side wall of the placement groove 31;

[0059] The fixing column 36, one end of the fixing column 36 is arranged outside the placement groove 31, the other end passes through the installation cavity 35 and is inserted into the fixing groove 34. A limiting ring 37 is arranged on the fixing column 36, and the limiting ring 37 is slidably connected with the inner wall of the installation cavity 35.

[0060] As Figures 1-3 Shown in FIGS. 4 and 5, one end of the fixing column 36 can be inserted into the fixing groove 34 to fix the deodorizing box 32. The user can control the end of the fixing column 36 away from the placement groove 31 to insert and pull out the fixing column 36, so as to control the fixing effect of the fixing column 36 on the deodorizing box 32. Pulling out the fixing column 36 outward can cancel the fixing of the fixing column 36 on the deodorizing box 32. At this time, the deodorizing box 32 can be disassembled and replaced. Inserting the fixing column 36 inward, the end of the fixing column 36 facing the placement groove 31 is inserted into the fixing groove 34. At this time, the fixing column 36 provides a fixing effect on the deodorizing box 32, which can effectively prevent the deodorizing box 32 from coming out of the placement groove 31 during transportation and collision, improve the stability and safety of the deodorizing mechanism 3, and is convenient to operate at the same time.

[0061] The limiting ring 37 can limit the fixing column 36 to prevent the fixing column 36 from coming out of the installation cavity 35 when pulling the fixing column 36 outward, and improve the stability of the fixing component 33.

[0062] The fixing component 33 further includes:

[0063] The elastic member 38 is arranged at one end of the limiting ring 37 away from the placement groove 31. One end of the elastic member 38 abuts against the limiting ring 37, and the other end abuts against the inner wall of the installation cavity 35.

[0064] As Figure 3 Shown in FIG. 5, the elastic member 38 is arranged at one end of the limiting ring 37 away from the placement groove 31. The elastic member 38 can provide a pressure towards the placement groove 31 on the fixing column 36 to prevent the fixing column 36 from sliding when fixing the deodorizing box 32, and further improve the fixing stability of the fixing column 36.

[0065] Meanwhile, the elastic member 38 can reset the fixed post 36 after it is pulled outwards. When the user replaces the deodorizing box 32, the user only needs to pull the fixed post 36 outwards, then take out the deodorizing box 32 in the storage slot 31 and replace it, and finally release the fixed post 36. The elastic member 38 will apply a pressure towards the deodorizing box 32 to the limiting ring 37, causing the fixed post 36 to reset and insert into the fixing groove 34, which is relatively convenient to operate and effectively improves the disassembly, assembly and maintenance efficiency.

[0066] Embodiment 3:

[0067] This embodiment provides a deodorizing shoe box. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0068] The lamp mechanism 4 includes:

[0069] The illuminating lamp strip 41 is arranged at the bottom of the top cover 2;

[0070] The ultraviolet lamp strip 42 is arranged at the bottom of the top cover 2. The illuminating lamp strip 41 and the ultraviolet lamp strip 42 are arranged at intervals in the width direction of the top cover 2.

[0071] As Figure 4 shown, both the ultraviolet lamp strip 42 and the illuminating lamp strip 41 are adhesively connected to the top of the top cover 2. The ultraviolet lamp strip 42 can sterilize and disinfect the shoes in the shoe box, further improving the deodorizing effect of the deodorizing shoe box. The illuminating lamp strip 41 can improve the brightness in the shoe box, facilitating the user to display and appreciate the shoes in the shoe box.

[0072] The ultraviolet lamp strip 42 and the illuminating lamp strip 41 are arranged at intervals in the width direction of the top cover 2. The interval arrangement can make the irradiation light of the ultraviolet lamp strip 42 and the illuminating lamp strip 41 more uniform, enhancing the disinfection and sterilization effect of the ultraviolet lamp strip 42 and the illumination and display effects of the illuminating lamp strip 41.

[0073] Both the ultraviolet lamp strip 42 and the illuminating lamp strip 41 are existing products, and their power supply wiring methods are also conventional designs. The power supply wires can pass through the top cover 2, and the ultraviolet lamp strip 42 and the illuminating lamp strip 41 are respectively powered.

[0074] It also includes:

[0075] The bottom plate 5 is arranged at the bottom of the box body. The bottom of the bottom plate 5 is provided with a support protrusion 51, and the top of the top cover 2 is provided with a connection groove 21. The support protrusion 51 and the connection groove 21 are structurally adapted.

[0076] As Figure 1 、 5 -6 shows, the support protrusion 51 can be structurally adapted to the connection groove 21, enabling multiple box bodies to be stacked and fixed, improving the stability of stacking multiple box bodies and saving the use space.

[0077] The cross-section of the supporting protrusion 51 is trapezoidal, which has a large contact area with the ground. It can reduce the pressure of the shoe box on the ground when stacked, thereby reducing the damage to the ground caused by the shoe box.

[0078] The top cover 2, the side plates 1 and the bottom plate 5 are all made of plastic. Plastic has a certain strength, strong chemical stability, can prevent moisture and corrosion, has a long service life, is light in weight, suitable for storage and transportation, and has a low cost.

[0079] A placement plate 52 is provided above the bottom plate 5. Sliding grooves 12 are provided on the opposite sides of the two side plates 1. The placement plate 52 is inserted into the sliding grooves 12, and the placement plate 52 is slidably connected to the sliding grooves 12.

[0080] As Figure 1 、 5 -7 shows that the placement plate 52 is slidably connected to the sliding grooves 12. The placement plate 52 is used to place shoes. When the deodorant shoe box is used for a long time, the dirt on the soles will adhere to the placement plate 52. When the shoe box needs to be cleaned, only the placement plate 52 needs to be pulled out and cleaned, instead of disassembling and cleaning the whole shoe box, which is convenient for cleaning and improves the maintenance efficiency at the same time.

[0081] It also includes:

[0082] A front cover 6, which is arranged on the box body. The bottom of the front cover 6 is hinged to the two side plates 1. A clamping groove 61 is provided at the top of the front cover 6, and a clamping protrusion 22 is provided below the top cover 2. The clamping protrusion 22 is clamped with the clamping groove 61.

[0083] As Figure 1 、 8 -9 shows that hinge grooves are provided on the opposite sides of the side plates 1. Hinge protrusions are provided at both ends of the front cover 6. The hinge protrusions are inserted into the hinge grooves, so that the front cover 6 can rotate relative to the hinge grooves. A clamping groove 61 is provided on the side of the top of the front cover 6 facing the box body. The clamping groove 61 cooperates with the clamping protrusion 22 at the bottom of the top cover 2, so that the front cover 6 can be opened and closed on the box body.

[0084] The front cover 6 and the side plates 1 are both made of transparent plastic. Users can directly observe and display the shoes in the deodorant shoe box outside the box. They can observe the state of the shoes at any time when needed without opening the front cover 6 for observation, which is more convenient.

[0085] An opening groove is provided at one end of the front cover 6 away from the clamping groove 61. Users can insert their fingers into the opening groove to control the opening and closing of the front cover 6, which is convenient for operation.

[0086] The above embodiments are only preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A deodorizing shoe box, comprising a box body, characterized in that, The box body includes: Two side plates (1) are arranged on both sides of the box body, and ventilation holes (11) are provided on the side plates (1); A top cover (2) is arranged on the top of the box body; An odor removal mechanism (3) is arranged inside the box body. The odor removal mechanism (3) includes a storage groove (31), an odor removal box (32) and a fixing component (33). The storage groove (31) is arranged at the bottom of the box body, the odor removal box (32) is arranged in the storage groove (31), an adsorbent is arranged in the odor removal box (32), a plurality of ventilation holes (321) are provided on the odor removal box (32), a fixing groove (34) is provided on the odor removal box (32), one end of the fixing component (33) is arranged outside the storage groove (31), and the other end passes through the side wall of the storage groove (31) and is inserted into the fixing groove (34); A lamp mechanism (4) is arranged at the bottom of the top cover (2); Wherein, the fixing component (33) is used to fix the odor removal box (32), and the lamp mechanism (4) is used to disinfect shoes.

2. The deodorant shoe box according to claim 1, wherein, The fixing component (33) includes: An installation cavity (35) is arranged in the side wall of the storage groove (31); A fixing column (36), one end of the fixing column (36) is arranged outside the storage groove (31), the other end passes through the installation cavity (35) and is inserted into the fixing groove (34), a limiting ring (37) is arranged on the fixing column (36), and the limiting ring (37) is slidably connected with the inner wall of the installation cavity (35).

3. The deodorant shoe box according to claim 2, characterized in that, The fixing component (33) further includes: An elastic member (38) is arranged at one end of the limiting ring (37) away from the storage groove (31), one end of the elastic member (38) abuts against the limiting ring (37), and the other end abuts against the inner wall of the installation cavity (35).

4. The deodorant shoe box according to claim 1, characterized in that, The lamp mechanism (4) includes: A lighting lamp strip (41) is arranged at the bottom of the top cover (2); An ultraviolet lamp strip (42) is arranged at the bottom of the top cover (2), and a plurality of the lighting lamp strips (41) and the ultraviolet lamp strips (42) are arranged at intervals along the Y direction of the top cover (2).

5. The deodorant shoe box according to claim 1, characterized in that, It further includes: A bottom plate (5) is arranged at the bottom of the box body, support protrusions (51) are arranged at the bottom of the bottom plate (5), a connection groove (21) is arranged at the top of the top cover (2), and the support protrusions (51) are adapted to the connection groove (21) in structure.

6. The deodorant shoe box according to claim 5, characterized in that, A placement plate (52) is arranged above the bottom plate (5), sliding grooves (12) are arranged on one side of the two side plates (1) opposite to each other, the placement plate (52) is inserted into the sliding grooves (12), and the placement plate (52) is slidably connected with the sliding grooves (12).

7. The deodorant shoe box according to claim 1, characterized in that It further includes: A front cover (6) is arranged on the box body, the bottom of the front cover (6) is hinged to the two side plates (1), a clamping groove (61) is arranged at the top of the front cover (6), a clamping protrusion (22) is arranged below the top cover (2), and the clamping protrusion (22) is clamped with the clamping groove (61).