Built-in hinge for explosion-proof box

Abstract

The utility model relates to the field of explosion-proof boxes, and discloses a built-in hinge for an explosion-proof box, which comprises a built-in hinge positioned between an explosion-proof box cover and an explosion-proof box body, the explosion-proof box cover and the explosion-proof box body rotate through the built-in hinge, the built-in hinge comprises an upper hinge and a lower hinge, the upper hinge is connected with the lower hinge through a pin shaft, and the pin shaft is connected with the explosion-proof box cover. The upper hinge and the lower hinge are respectively connected with the upper cross screw and the lower cross screw, and the upper cross screw and the lower cross screw are respectively connected with the explosion-proof box cover and the explosion-proof box body. The explosion-proof box can prevent the box cover from slipping off when the box cover is opened at high altitude, can be installed and used in a narrow area, and can conduct static electricity to a ground wire on the box body through an upper hinge and a lower hinge in the explosion-proof box.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof boxes, in particular to a built-in hinge for explosion-proof boxes. Background Art

[0002] Existing explosion-proof products with flat joint surfaces need to open the box cover when installing or connecting at high altitude, which is easy to fall from high altitude, causing safety accidents or great inconvenience. In addition, when installing in a narrow area, it is difficult to install because there is nowhere to put the removed explosion-proof box cover. This brings many uncontrollable factors to the installation and maintenance of this type of product and affects the safety of the system. Products such as explosion-proof telephone stations need to be solved. In the domestic market, this type of technical problem has always adopted an external hinge structure, which is not beautiful and takes up a large space. In addition, the static electricity in the explosion-proof box cannot be released.

[0003] Document CN202222504881 discloses a battery explosion-proof box, comprising a bottom frame bracket, an explosion-proof box body, and an explosion-proof box cover. The explosion-proof box body comprises an outer box body and an inner box body, the inner box body being arranged inside the outer box body, and a heat-insulating layer being filled between the outer box body and the inner box body. The side wall of the outer box body is provided with a smoke exhaust port, the smoke exhaust port being embedded with a metal filter screen, and the side wall of the inner box body is provided with a smoke exhaust through hole at the position corresponding to the smoke exhaust port. The inner box body is provided with a mesh box body and a mesh box cover. This type of connection structure is installed on the outside of the explosion-proof box, which is quite inconvenient in some places with limited space.

[0004] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above problems, the utility model discloses a built-in hinge for an explosion-proof box, which can prevent the box cover from slipping when opening the cover at high altitude, and can be installed and used in narrow areas. Static electricity can be conducted to the ground wire on the box body through the upper hinge and the lower hinge inside the explosion-proof box.

[0006] The technical solution of the utility model is: a built-in hinge for an explosion-proof box, including a built-in hinge located between an explosion-proof box cover and an explosion-proof box body, the explosion-proof box cover and the explosion-proof box body are rotated through the built-in hinge, the built-in hinge includes an upper hinge and a lower hinge, the upper hinge and the lower hinge are connected by a pin shaft, the upper hinge and the lower hinge are respectively connected to an upper cross screw and a lower cross screw, and the upper cross screw and the lower cross screw are respectively connected to the explosion-proof box cover and the explosion-proof box body.

[0007] By adopting the above technical solution, the opening and closing of the explosion-proof box body and the explosion-proof box cover are both achieved through a rotational connection using a built-in hinge. Since all parts of the connection mechanism are made of metal, the static electricity generated can be conducted to the threaded body of the cross-slot screw of the explosion-proof box body through the built-in hinge, and then transmitted to the earth through a special grounding device of the threaded body to ensure safety.

[0008] Preferably, an upward groove is provided at the bottom of the explosion-proof box cover, a sealing ring is provided in the groove, and the explosion-proof box body and the explosion-proof box cover are fastened by hexagon socket screws and flat spring washers.

[0009] By adopting the above technical solution, when the explosion-proof box cover and the explosion-proof box body are closed, the sealing ring inside the explosion-proof box cover can increase the sealing between the explosion-proof box cover and the explosion-proof box body, and the hexagonal screws and flat spring washers increase the connection strength between the explosion-proof box cover and the explosion-proof box body.

[0010] Preferably, the upper hinge includes a hollow waist-shaped groove and a straight fixed end. The upper part of the straight section of the waist-shaped hole is located inside the explosion-proof box cover, and the lower part is located inside the explosion-proof box. The straight fixed end is parallel to the explosion-proof box cover and contacts the screw seat. The fixed end is fastened to the screw seat by the upper cross-slot screw and the flat spring washer. The cross-slot screw and the screw seat are both made of metal, and the screw seat is located at the bottom of the explosion-proof box cover.

[0011] By adopting the above technical solution, the fixed end of the upper hinge can be fastened by the upper cross-slot screw, and the static electricity of the explosion-proof box cover is conducted to the fixed end of the upper hinge through the screw seat, and then the static electricity is conducted to the waist-shaped hole of the upper hinge through the fixed end.

[0012] Preferably, the upper hinges are arranged in parallel with each other, a lower hinge is provided between the upper hinges, and the lower hinge and the hollow inner hole of the upper hinge are fastened together by a pin and a shaft retaining ring.

[0013] By adopting the above technical solution, the waist-shaped hole of the upper hinge and the O-shaped groove of the lower hinge are fastened by the pin shaft, and the static electricity of the upper hinge is transferred through the pin shaft and the lower hinge.

[0014] Preferably, the lower hinge includes a hollow O-shaped groove, a vertical connecting portion and a fixing portion. The diameter of the O-shaped groove is consistent with the width of the waist-shaped groove, which is convenient for tightening the shaft. The diameter of the O-shaped groove is smaller than the length of the waist-shaped groove.

[0015] By adopting the above technical solution, when the explosion-proof box cover and the explosion-proof box body are opened and closed, the O-shaped groove slides up and down in the waist-shaped hole, thereby connecting the explosion-proof box cover and the explosion-proof box body.

[0016] Preferably, the connecting part is tightly attached to the side wall of the explosion-proof box, the fixing part is perpendicular to the connecting part, the fixing part is tightly attached to the upper surface of the screw seat, the fixing part is fixed to the screw seat by the lower cross slot screw and the flat spring washer, and the screw seat is located at the bottom and side of the explosion-proof box.

[0017] By adopting the above technical solution, the connection portion of the lower hinge is tightly attached to the inner side wall of the explosion-proof box, so that the static electricity thereon can be fully conducted.

[0018] Preferably, a grounding wire is also provided on the outside of the side of the explosion-proof box.

[0019] By adopting the above technical solution, static electricity is transferred to the grounding wire through the upper hinge, the lower hinge, the screw seat, and the cross-slot screw, and then transmitted to the earth to ensure the safety of the entire device.

[0020] The benefits of the present invention are as follows: 1. The present invention provides an upper hinge and a lower hinge between the explosion-proof box cover and the explosion-proof box body. Since the upper hinge is fastened to the inside of the explosion-proof box cover and the lower hinge is fastened to the inside of the explosion-proof box body, and the upper hinge and the lower hinge are connected by a pin shaft, the explosion-proof box body can be prevented from sliding from a high altitude when the explosion-proof box is opened at a high altitude, thereby increasing the safety of the explosion-proof box.

[0021] 2. The explosion-proof box cover of the utility model is connected to the explosion-proof box body through the upper hinge and the lower hinge. Since all parts in the explosion-proof box are made of metal, the internal static electricity can be transferred to the threaded body through the connection of the upper hinge and the lower hinge, and then transmitted to the earth through the special grounding device of the threaded body to ensure safety.

[0022] 3. A built-in hinge mechanism is provided between the explosion-proof box body and the box cover of the utility model, which can prevent the box cover from sliding off when opening the cover at high altitude, and can be installed and used in narrow areas. The mechanism uses screws to respectively fix the explosion-proof box body and the box cover to ensure that when the explosion-proof box cover is opened, the hinge is installed between the explosion-proof box body and the box cover, which will not cause the explosion-proof box cover to slide off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model after the cover is removed;

[0025] Figure 3 This is a schematic structural diagram of the upper hinge of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the lower hinge of the utility model.

[0027] Among them: 1. Explosion-proof box cover, 1-1. Groove, 1-2. Sealing ring, 2. Explosion-proof box body, 3. Upper hinge, 3-1. Waist-shaped hole, 3-2. Fixed end, 4. Lower hinge, 4-1. O-shaped groove, 4-2. Connecting part, 4-3. Fixed part, 5. Pin, 6. Retaining ring for shaft, 7. Screw seat, 8. Upper cross-slot screw, 9. Lower cross-slot screw, 10. Hexagon socket screw and flat spring washer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] like Figure 1-4 As shown, a built-in hinge for an explosion-proof box includes a built-in hinge located between an explosion-proof box cover 1 and an explosion-proof box body 2, the explosion-proof box cover 1 and the explosion-proof box body 2 are rotated by the built-in hinge, the built-in hinge includes an upper hinge 3 and a lower hinge 4, the upper hinge 3 and the lower hinge 4 are connected by a pin 5, the upper hinge 3 and the lower hinge 4 are metal, the upper hinge 3 and the lower hinge 4 are respectively connected to the upper cross screw 8 and the lower cross screw 9, the upper cross screw 8 and the lower cross screw 9 are respectively connected to the explosion-proof box cover 1 and the explosion-proof box body, the opening and closing between the explosion-proof box body 1 and the explosion-proof box cover 2 are both rotatably connected by the built-in hinge, since all parts of the connecting mechanism are metal, the static electricity generated can be conducted to the cross-slot screw threaded body of the explosion-proof box body 2 through the built-in hinge, and transmitted to the earth through a special grounding device of the threaded body to ensure safety.

[0030] An upward groove 1-1 is provided at the bottom of the explosion-proof box cover 1, and a sealing ring 1-2 is provided in the groove 1-1. The explosion-proof box body 2 and the explosion-proof box cover 1 are fastened by hexagonal screws and flat spring washers 10. When the explosion-proof box cover 1 and the explosion-proof box body 2 are closed, the sealing ring 1-2 in the explosion-proof box cover 1 can increase the sealing between the explosion-proof box cover 2 and the explosion-proof box body 2, and the hexagonal screws and flat spring washers 10 increase the connection strength between the explosion-proof box cover 1 and the explosion-proof box 2.

[0031] The upper hinge 3 includes a hollow waist-shaped groove 3-1 and a straight fixed end 3-2. The upper part of the straight section of the waist-shaped hole 3-1 is located in the explosion-proof box cover 1, and the lower part is located in the explosion-proof box body 2. The straight fixed end 3-2 is parallel to the explosion-proof box cover 1 and contacts the screw seat 7. The fixed end is fastened to the screw seat by an upper cross-slot screw and a flat spring washer. The upper cross-slot screw 8 and the screw seat 7 are both made of metal. The screw seat 7 is located at the bottom of the explosion-proof box cover 1. The fixed end 3-2 of the upper hinge 3 can be fastened by the upper cross-slot screw 8, and the static electricity of the explosion-proof box cover 1 is conducted to the fixed end 3-2 of the upper hinge 3 through the screw seat 7, and then the static electricity is conducted to the waist-shaped hole 3-1 of the upper hinge 3 through the fixed end 3-2.

[0032] The upper hinges 3 are arranged in parallel, and a lower hinge 4 is provided between the upper hinges 3. The lower hinge 4 and the hollow inner hole of the upper hinge 3 are fastened by a pin 5 and a shaft retaining ring 6. The waist-shaped hole 3-1 of the upper hinge 3 and the O-shaped groove 4-1 of the lower hinge 4 are fastened by a pin 5. After the pin 5 passes through the inner holes of the upper and lower hinges, the position is locked with a shaft retaining ring 6, and then the explosion-proof box cover 1 is installed on the explosion-proof box body 2. The static electricity of the upper hinge 3 is transmitted through the pin 5 and the lower hinge 4.

[0033] The lower hinge 4 includes a hollow O-shaped groove 4-1, a vertical connecting part 4-2 and a fixing part 4-3. The diameter of the O-shaped groove 4-1 is consistent with the width of the waist-shaped groove 3-1, which is convenient for the pin 5 to be tightened. The diameter of the O-shaped groove 4-1 is smaller than the length of the waist-shaped groove 3-1. When the explosion-proof box cover 1 and the explosion-proof box body 2 are opened and closed, the O-shaped groove 4-1 slides up and down in the waist-shaped hole 3-1, thereby connecting the explosion-proof box cover 1 and the explosion-proof box body 2. When opened, the lower hinge 4 slides downward in the upper hinge 3, and when closed, the lower hinge 4 slides upward in the upper hinge 3.

[0034] The connecting part 4-2 is tightly attached to the side wall of the explosion-proof box 2, the fixing part 4-3 is perpendicular to the connecting part 4-2, the fixing part 4-3 is tightly attached to the upper surface of the screw seat 7, the fixing part 4-3 is fixed to the screw seat 7 by the lower cross slot screw 9 and the flat spring washer, the screw seat 7 is located at the bottom and side of the explosion-proof box 2, and the connecting part of the lower hinge 4 is tightly attached to the inner side wall of the explosion-proof box 2, so that the static electricity on it can be fully conducted.

[0035] A grounding wire is also provided on the outside of the side of the explosion-proof box 2. Static electricity is transferred to the grounding wire through the upper hinge 3, the lower hinge 4, the screw seat 7, and the cross-slot screw, and then transmitted to the earth to ensure the safety of the entire device.

[0036] When the explosion-proof box is opened, the explosion-proof box cover 1 is connected to the lower hinge 4 by the upper hinge 3, and the explosion-proof box cover 1 may slip when opening the cover at high altitude. When the explosion-proof box cover 1 is covered on the explosion-proof box body 2, the lower hinge 4 slides on the upper hinge 3. After the explosion-proof box cover 1 is covered on the explosion-proof box body 2, it is fastened by the hexagon socket screws and flat spring washers 10. The cooperation between the upper hinge 3 and the lower hinge 4 can prevent the explosion-proof box cover 1 from slipping on the one hand, and on the other hand, it can conduct static electricity to the ground wire of the explosion-proof box and transmit it to the earth to ensure safety.

[0037] Those skilled in the art will understand that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A built-in hinge for an explosion-proof box, comprising a built-in hinge located between an explosion-proof box cover and an explosion-proof box body, wherein the explosion-proof box cover and the explosion-proof box body rotate via the built-in hinge, and the built-in hinge comprises an upper hinge and a lower hinge, characterized in that: The upper hinge and the lower hinge are connected by a pin shaft, and the upper hinge and the lower hinge are connected to the upper cross screw and the lower cross screw respectively, and the upper cross screw and the lower cross screw are connected to the explosion-proof box cover and the explosion-proof box body respectively.

2. The built-in hinge for an explosion-proof box according to claim 1, characterized in that: An upward groove is provided at the bottom of the explosion-proof box cover, a sealing ring is provided in the groove, and the explosion-proof box body and the explosion-proof box cover are fastened by hexagon socket screws and flat spring washers.

3. The built-in hinge for an explosion-proof box according to claim 1, characterized in that: The upper hinge includes a hollow waist-shaped groove and a straight fixed end. The upper part of the straight section of the waist-shaped hole is located inside the explosion-proof box cover, and the lower part is located inside the explosion-proof box. The straight fixed end is parallel to the explosion-proof box cover and contacts the screw seat. The fixed end is fastened to the screw seat by an upper cross-slot screw and a flat spring washer. The cross-slot screw and the screw seat are both made of metal. The screw seat is located at the bottom of the explosion-proof box cover.

4. The built-in hinge for an explosion-proof box according to claim 1, characterized in that: The upper hinges are arranged in parallel with each other, a lower hinge is arranged between the upper hinges, and the lower hinges and the hollow inner holes of the upper hinges are fastened together by a pin shaft and a shaft retaining ring.

5. The built-in hinge for an explosion-proof box according to claim 3, characterized in that: The lower hinge includes a hollow O-shaped groove, a vertical connecting portion and a fixing portion. The diameter of the O-shaped groove is consistent with the width of the waist-shaped groove, which is convenient for tightening the shaft. The diameter of the O-shaped groove is smaller than the length of the waist-shaped groove.

6. The built-in hinge for an explosion-proof box according to claim 5, characterized in that: The connecting part is tightly attached to the side wall of the explosion-proof box, the fixing part is perpendicular to the connecting part, the fixing part is tightly attached to the upper surface of the screw seat, the fixing part is fixed to the screw seat by a lower cross slot screw and a flat spring washer, and the screw seat is located at the bottom and side of the explosion-proof box.

7. The built-in hinge for an explosion-proof box according to claim 1, characterized in that: A grounding wire is also provided on the outside of the side of the explosion-proof box.

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