Sheet metal box body sealing structure

Abstract

The utility model relates to the technical field of sheet metal box bodies, in particular to a sheet metal box body sealing structure which comprises a box body and a box cover, and the box cover is buckled on the top of the box body. A box opening is formed in the top of the box body; the box body and the box cover are connected and fixed through the hasp and are connected and fixed through the bolt, and the first rubber strip, the second rubber strip and the third rubber strip are connected and fixed through the hasp and the bolt; a circle of first adhesive tape is fixed to the top of the box body in the circumferential direction of the box opening, and the top of the first adhesive tape abuts against the top of the box cover; according to the utility model, sealing between the box body and the box cover is realized by arranging three adhesive tapes, the sealing effect is effectively improved, meanwhile, for waterproof of incoming and outgoing cables of the box body, double waterproof is realized by adopting a waterproof joint and a sealing and pouring adhesive structure, the waterproof effect is better, rainwater is not easy to enter the box body during outdoor use, and the power utilization safety of equipment in the box body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal boxes, in particular to a sheet metal box sealing structure. Background Art

[0002] In modern industrial and outdoor applications, metal boxes are used as protective shells for various electrical equipment, communication facilities and other precision instruments. Their waterproof performance is crucial, especially in harsh environmental conditions. The waterproof sealing structure of the metal box needs to be able to maintain good sealing under various climatic conditions to prevent rain, dust or other harmful substances from entering the box, thereby ensuring the safe operation of the equipment in the box and extending its service life.

[0003] At present, there are many sealing and waterproof structure designs for metal boxes on the market, such as a metal box IP68 sealing and waterproof structure disclosed in CN214008053U, which includes a box cover and a box body. The box body is a rectangle with an opening on one side, and a docking plate is welded at the opening of the box body. The inner side of the docking plate is fixedly connected to a first waterproof foam, and the outer side of the docking plate is fixedly connected to a second waterproof foam. An inner clamping plate is welded to a side of the box cover close to the box body, and an outer clamping plate is fixedly connected to a side of the box cover close to the inner clamping plate.

[0004] As in the above technical solution, a docking plate is welded at the opening of the box body, and the first waterproof foam, the second waterproof foam, the inner card plate, the outer card plate, the bolt hole and the waterproof gasket are matched and set. The whole is firmly sealed and locked by screw locking. The inner card plate and the outer card plate will tightly press the first waterproof foam and the second waterproof foam embedded therein. A waterproof gasket is added to the first fixing hole inside the connecting plate to prevent water immersion and wind and sand erosion. However, the sealing effect of the sealing structure is poor. When used outdoors, rainwater can easily enter the box body, affecting the electrical safety of the equipment inside the box. Utility Model Content

[0005] In view of this, the utility model proposes a sheet metal box sealing structure, which realizes the sealing between the box body and the box cover by setting multiple rubber strips, effectively improving the sealing effect. At the same time, for the waterproofing of cables entering and exiting the box, a waterproof joint + sealing glue structure is adopted to achieve double waterproofing with good waterproofing effect. When used outdoors, rainwater is not easy to enter the box, which is beneficial to the electrical safety of equipment in the box.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides a sheet metal box sealing structure, comprising a box body and a box cover, wherein:

[0008] The box cover is buckled on the top of the box body;

[0009] The top of the box body is provided with a box opening;

[0010] It also includes a buckle, a bolt, a first rubber strip, a second rubber strip and a third rubber strip, wherein:

[0011] The box body and the box cover are fixed by the buckle connection and the bolt connection;

[0012] A circle of the first rubber strip is fixed on the top of the box body along the circumference of the box opening, and the top of the first rubber strip abuts against the top of the box cover;

[0013] A circle of the second rubber strip is fixed to the inner top of the box cover, the second rubber strip is outside the circle of the first rubber strip, and the bottom of the second rubber strip abuts against the top of the box body;

[0014] A circle of third rubber strip is fixed at the edge of the bottom of the box cover. The third rubber strip is located outside the circle of the second rubber strip, and the bottom of the third rubber strip abuts against the top of the box body.

[0015] On the basis of the above technical solution, preferably, the top of the box is stepped, including a first step and a second step, wherein:

[0016] The first step is above the second step, and the first step and the second step surround the circumference of the box opening;

[0017] The first rubber strip is arranged on the first step;

[0018] The second rubber strip abuts against the first step;

[0019] The third rubber strip abuts against the second step.

[0020] On the basis of the above technical solution, preferably, one end of the first step close to the box opening is bent upward by 90 degrees to form a flange, and the first rubber strip is fixed on the flange.

[0021] On the basis of the above technical solution, preferably, a plurality of buckles are fixed on the side of the box body, and one end of the buckle is hooked to the side of the box cover.

[0022] On the basis of the above technical solution, preferably, a plurality of bolts are arranged on the top of the box cover, and one end of the bolt vertically penetrates the box cover and is screwed to the box body.

[0023] On the basis of the above technical solution, preferably, it also includes a nut column, wherein,

[0024] A plurality of nut columns are fixed on the first step, and the plurality of nut columns correspond to the plurality of bolts one by one;

[0025] The lower end of the bolt is threadedly connected to the nut column at the corresponding position.

[0026] On the basis of the above technical solution, preferably, it also includes a waterproof gasket, wherein:

[0027] The waterproof gasket is sleeved on the bolt;

[0028] One end of the waterproof gasket abuts against the upper end of the bolt, and the other end abuts against the top of the box cover.

[0029] On the basis of the above technical solution, preferably, it further comprises a bracket, wherein:

[0030] The bracket is fixed to the inner top of the box cover, and the bracket is arranged in a ring shape along the circumference of the box opening;

[0031] The second adhesive strip is fixed to the bottom of the bracket.

[0032] On the basis of the above technical solution, preferably, it also includes a waterproof joint, wherein:

[0033] The waterproof joint is fixed on the side of the box body, and the waterproof joint is communicated with the interior of the box body.

[0034] On the basis of the above technical solution, preferably, it also includes a glue-filling sleeve, wherein:

[0035] One end of the waterproof joint extends to the interior of the box;

[0036] The glue-filling sleeve is arranged at one end of the waterproof joint extending to the inside of the box body, and is fixed on the inner side wall of the box body;

[0037] The glue-filling sleeve and the waterproof joint are concentric.

[0038] The sheet metal box sealing structure of the utility model has the following beneficial effects compared with the prior art:

[0039] (1) The sealing between the box body and the box cover is achieved by setting three rubber strips, which effectively improves the sealing effect. Moreover, the box body and the box cover are connected and fixed by buckles, which facilitates the compression of the distance between the box cover and the box body, realizes the compression amount of each rubber strip, and achieves the purpose of further sealing. At the same time, the box body and the box cover are also connected and fixed by bolts, which is conducive to maintaining the compression amount of the rubber strip, making the sealing more durable and effective. When used outdoors, rainwater is not easy to enter the box body, which is conducive to the electrical safety of the equipment in the box.

[0040] (2) By setting up a waterproof structure, the cables entering and exiting the box are waterproofed. At the same time, by setting up a glue-filling sleeve, it is convenient to inject sealing glue into the glue-filling sleeve to further enhance the waterproof effect of the cables entering and exiting the box. Double waterproofing is achieved through the waterproof joint + sealing glue structure, and the waterproof effect is better. When used outdoors, rainwater is not easy to enter the box along the cables, which is beneficial to the electrical safety of the equipment in the box.

[0041] (3) By setting the top of the box body in a stepped shape, and the stepped structure cooperating with the second rubber strip and the third rubber strip, a waterproof maze effect is achieved, making it difficult for rainwater to enter the box body from between the box body and the box cover, which is beneficial to the electrical safety of the equipment in the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a three-dimensional diagram of a sheet metal box sealing structure of the utility model;

[0044] Figure 2 for Figure 1 A magnified image of point A;

[0045] Figure 3 This is a front view of a sheet metal box sealing structure of the utility model;

[0046] Figure 4 for Figure 3 AA section view;

[0047] Figure 5 It is a top view of the box;

[0048] Figure 6 for Figure 5 A three-dimensional view cut along the BB direction;

[0049] Figure 7 This is a bottom view of the box cover;

[0050] Figure 8 for Figure 7 A three-dimensional view cut along the CC direction;

[0051] In the figure: 1, box body; 2, box cover; 11, buckle; 12, first rubber strip; 13, nut column; 14, waterproof joint; 15, glue filling sleeve; 21, bolt; 22, second rubber strip; 23, third rubber strip; 24, waterproof gasket; 25, bracket; 101, box opening; 102, first step; 103, second step; 104, flange; 11a, hook part; 11b, hook seat part. DETAILED DESCRIPTION

[0052] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] like Figure 1-8 As shown, the utility model is a sheet metal box sealing structure with a sealing level that can reach IP68, including a box body 1 and a box cover 2, wherein the box body 1 and the box cover 2 are both obtained by sheet metal processing, and the main body shape is square, and the capacity can be customized according to user requirements. A square box opening 101 is provided on the top of the box body 1, and the box cover 2 is used to buckle on the top of the box body 1 to form a complete distribution box, and the box is used to install electrical equipment.

[0054] To achieve waterproofing, a sheet metal box sealing structure of the utility model further includes a buckle 11 , a first rubber strip 12 , a second rubber strip 22 and a third rubber strip 23 .

[0055] Among them, a circle of first rubber strip 12 is fixed to the top of the box body 1 along the circumference of the box opening 101, and the top of the first rubber strip 12 is used to support the top of the box cover 2; a circle of second rubber strip 22 is fixed to the inner top of the box cover 2, the second rubber strip 22 is located outside the circle of the first rubber strip 12, and the bottom of the second rubber strip 22 is used to support the top of the box body 1; a circle of third rubber strip 23 is fixed to the edge of the bottom of the box cover 2, the third rubber strip 23 is located outside the circle of the second rubber strip 22, and the bottom of the third rubber strip 23 is used to support the top of the box body 1; the above-mentioned rubber strips are all square ring-shaped.

[0056] The buckle 11 is a metal quick clip, and a plastic quick clip may also be used, such as the SK3-021-2 quick clip sold on the market, which is arranged in a matrix around the box body 1. Figure 3As shown, the buckle 11 includes a hook portion 11a and a hook seat portion 11b, wherein the hook portion 11a is fixed to the side of the box body 1, and the hook seat portion 11b is fixed to the side of the box cover 2. When the box cover 2 is buckled on the top of the box body 1, one end of the hook portion 11a is hooked on the hook seat portion 11b and pressed, so that the box cover 2 is buckled on the top of the box body 1, and the compression amount of the above-mentioned rubber strip is realized by the buckle 11, so as to achieve the purpose of further sealing, that is, Figure 4 As shown, the box cover 2 and the box body 1 are pressed together by the buckle 11, so that the top of the first rubber strip 12 is against the top of the box cover 2, the bottom of the second rubber strip 22 is against the top of the box body 1, and the bottom of the third rubber strip 23 is against the top of the box body 1, forming a three-layer sealing structure. Compared with the prior art, it has a better sealing effect. When used outdoors, rainwater is not easy to enter the box body 1, which is beneficial to the electrical safety of the equipment in the box 1.

[0057] In order to maintain the compression amount of the rubber strip, a sheet metal box sealing structure of the utility model further includes bolts 21, wherein the bolts 21 are arranged in a matrix on the top of the box cover 2, such as Figure 4 As shown, after the box cover 2 and the box body 1 are fixedly connected by the buckle 11, the box cover 2 and the box body 1 are fixedly connected by the bolt 21, so as to fix the connection relationship between the box cover 2 and the box body 1 and maintain the compression amount of the rubber strip. Specifically, a plurality of bolt mounting holes are provided on the top of the box cover 2. When installing the bolt 21, the bolt 21 is inserted into the bolt mounting hole, the bolt 21 is screwed, and the lower end of the bolt 21 is screwed to the box body 1 until the head of the upper end of the bolt 21 is pressed on the top of the box cover 2 to complete the tightening.

[0058] In addition, if Figure 4 As shown, a waterproof labyrinth structure is provided on the top of the box body 1 . Specifically, the top of the box body 1 is in a stepped shape, including a first step 102 and a second step 103 .

[0059] Among them, Figure 5-6 As shown, the first step 102 is above the second step 103, and the first step 102 and the second step 103 surround the circumference of the box opening 101; the first rubber strip 12 is arranged on the first step 102; one end of the first step 102 close to the box opening 101 is bent upward by 90 degrees to form a flange 104, and the first rubber strip 12 is fixed on the flange 104; Figure 7-8 As shown, a bracket 25 is fixed to the inner top of the box cover 2 . The bracket 25 is arranged in a ring shape along the circumference of the box opening 101 . The second rubber strip 22 is fixed to the bottom of the bracket 25 .

[0060] When the box cover 2 is buckled on the box body 1, Figure 4As shown, the second rubber strip 22 abuts against the first step 102 , the third rubber strip 23 abuts against the second step 103 , and the first rubber strip 12 abuts against the inner top wall of the box cover 2 , thereby forming a waterproof labyrinth structure to prevent rainwater from entering the box body 1 .

[0061] In the waterproof maze structure, a plurality of nut columns 13 are fixed on the first step 102, wherein the plurality of nut columns 13 correspond to the plurality of bolts 21 one by one. When the bolts 21 are installed, the lower ends of the bolts 21 are threadedly connected to the nut columns 13 at corresponding positions.

[0062] In order to achieve waterproofing at the bolt 21, a waterproof gasket 24 is sleeved on the bolt 21. Figure 2 As shown, when the bolt 21 is tightened, one end of the waterproof gasket 24 abuts against the upper end of the bolt 21 , and the other end abuts against the top of the box cover 2 , so that rainwater is not easy to penetrate into the box body 1 along the bolt 21 through the waterproof gasket 24 .

[0063] like Figure 1 As shown, a waterproof connector 14 is also fixed to the side of the box 1, wherein one end of the waterproof connector 14 extends to and is connected to the interior of the box 1. The waterproof connector 14 is used for cables to enter and exit the box 1. When installing cables, the cables pass through the waterproof connector 14 and enter the box 1.

[0064] In order to prevent water leakage at the waterproof joint 14, a glue filling sleeve 15 is provided at one end of the waterproof joint 14 extending to the inside of the box body 1, wherein the glue filling sleeve 15 is fixed on the inner wall of the box body 1 and is concentric with the waterproof joint 14. After the cable is installed, sealing glue is poured into the glue filling sleeve 15 to achieve sealing, thereby preventing rainwater from penetrating into the box body 1 along the cable.

[0065] The use method of a sheet metal box sealing structure of the utility model is as follows:

[0066] When installing the cable, the cable passes through the waterproof connector 14 and the glue-filling sleeve 15 and enters the box body 1 , and then the sealing glue is poured into the glue-filling sleeve 15 to seal the glue-filling sleeve 15 .

[0067] When installing the box cover 2, first buckle the box cover 2 on the top of the box body 1, and then fix the box cover 2 on the box body 1 through the buckle 11, compress the distance between the box cover 2 and the box body 1, realize the compression of the rubber strip, and achieve the purpose of sealing, and then use the bolt 21 to fix the box cover 2 and the box body 1 for the second time, maintain the compression of the rubber strip, and after the box body 1 and the box cover 2 are sealed, the IP68 protection level can be achieved.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sheet metal box sealing structure, comprising a box body (1) and a box cover (2), wherein: The box cover (2) is buckled on the top of the box body (1); The top of the box body (1) is provided with a box opening (101); The invention is characterized in that it also comprises a buckle (11), a bolt (21), a first rubber strip (12), a second rubber strip (22) and a third rubber strip (23), wherein: The box body (1) and the box cover (2) are connected and fixed by the buckle (11) and are also connected and fixed by the bolt (21); A circle of the first rubber strip (12) is fixed on the top of the box body (1) along the circumference of the box opening (101), and the top of the first rubber strip (12) abuts against the top of the box cover (2); A circle of the second rubber strip (22) is fixed to the inner top of the box cover (2), the second rubber strip (22) is located outside the circle of the first rubber strip (12), and the bottom of the second rubber strip (22) abuts against the top of the box body (1); A circle of third rubber strip (23) is fixed at the edge of the bottom of the box cover (2), the third rubber strip (23) is located outside the circle of the second rubber strip (22), and the bottom of the third rubber strip (23) abuts against the top of the box body (1).

2. A sheet metal box sealing structure according to claim 1, characterized in that: The top of the box (1) is in a stepped shape, comprising a first step (102) and a second step (103), wherein: The first step (102) is located above the second step (103), and the first step (102) and the second step (103) surround the circumference of the box opening (101); The first rubber strip (12) is arranged on the first step (102); The second rubber strip (22) abuts against the first step (102); The third rubber strip (23) abuts against the second step (103).

3. A sheet metal box sealing structure as claimed in claim 2, characterized in that: One end of the first step (102) close to the box opening (101) is bent upwards by 90 degrees to form a flange (104), and the first rubber strip (12) is fixed on the flange (104).

4. A sheet metal box sealing structure as claimed in claim 1, characterized in that: A plurality of buckles (11) are fixed on the side of the box body (1), and one end of the buckle (11) is hooked to the side of the box cover (2).

5. A sheet metal box sealing structure as claimed in claim 2, characterized in that: A plurality of bolts (21) are arranged on the top of the box cover (2), and one end of the bolt (21) vertically penetrates the box cover (2) and is threadedly connected to the box body (1).

6. A sheet metal box sealing structure as claimed in claim 5, characterized in that: Also included is a nut column (13), wherein: A plurality of nut columns (13) are fixed on the first step (102), and the plurality of nut columns (13) correspond to the plurality of bolts (21) one by one; The lower end of the bolt (21) is threadedly connected to the nut column (13) at a corresponding position.

7. A sheet metal box sealing structure as claimed in claim 6, characterized in that: Also included is a waterproof gasket (24), wherein: The waterproof gasket (24) is sleeved on the bolt (21); One end of the waterproof gasket (24) abuts against the upper end of the bolt (21), and the other end abuts against the top of the box cover (2).

8. The sheet metal box sealing structure according to claim 1, characterized in that: Also included is a bracket (25), wherein: The bracket (25) is fixed to the inner top of the box cover (2), and the bracket (25) is arranged in a ring shape along the circumference of the box opening (101); The second rubber strip (22) is fixed to the bottom of the bracket (25).

9. The sheet metal box sealing structure according to claim 1, characterized in that: It also includes a waterproof joint (14), wherein: The waterproof joint (14) is fixed to the side of the box body (1), and the waterproof joint (14) is connected to the inside of the box body (1).

10. A sheet metal box sealing structure as claimed in claim 9, characterized in that: It also includes a glue-filling sleeve (15), wherein: One end of the waterproof joint (14) extends into the interior of the box (1); The glue-filling sleeve (15) is arranged at one end of the waterproof joint (14) extending to the interior of the box (1), and is fixed on the inner wall of the box (1); The glue-filling sleeve (15) and the waterproof joint (14) are concentric.

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