Double-sealing type instrument junction box

Abstract

The utility model relates to a double-sealed instrument junction box, which comprises a hollow box body with an opening on one side and a cover body for sealing the box body at the opening, a plurality of wire inlets are formed in the surface of the box body, a clamping structure is arranged on one side of the wire inlets in the box body, the wire inlets penetrate through the clamping structure, the clamping structure comprises a fixed clamping block and a movable clamping block, the fixed clamping block and the movable clamping block are arranged on the two sides of the wire inlets respectively, and the movable clamping block moves from the opening side of the box body to the fixed clamping block to clamp a penetrating cable; a plurality of sealing blocks corresponding to the wire inlet are arranged between the movable clamping block and the inner wall of the box body, the sealing blocks are elastically connected with the movable clamping block, the sealing blocks move towards the wire inlet along the inner wall of the box body under the action of elastic force, and the wire inlet is sealed when no cable enters the corresponding wire inlet. According to the utility model, the cover body seals the opening of the box body, and the sealing block seals the wire inlet, so that the double-sealing effect is realized.

Description

Technical Field

[0001] The utility model belongs to the field of junction box sealing, in particular to a double-sealed instrument junction box. Background Art

[0002] An instrument junction box is a box used to install instruments, instruments, controllers and other electrical equipment. It is commonly used in industrial production sites, instrument control rooms and electrical control systems for centralized installation and wiring of various instruments and electrical equipment. An instrument junction box usually has a protection level to protect the internal equipment from the external environment, and also helps manage and maintain the equipment. It usually includes terminals, switches, fuses, sockets and other equipment to connect and control various electrical equipment.

[0003] The existing sealing method of the instrument junction box mostly uses a cover to close the box and then lock it. The contact part between the cover and the box is sealed with a rubber pad. The sealing surface is flat and sealing gaps are prone to occur. At the same time, for a junction box with multiple incoming ports, it is difficult to take good sealing measures when some of the incoming ports are not connected. Utility Model Content

[0004] The utility model aims to provide a double-sealed instrument junction box to solve the technical problem of double sealing of the junction box body opening and the line inlet.

[0005] To achieve the above purpose, the specific technical solution of a double-sealed instrument junction box of the utility model is as follows:

[0006] A double-sealed instrument junction box comprises a hollow box body with an opening on one side and a cover body closing the box body at the opening;

[0007] The cover body is provided with a cover body protrusion surrounding the box body opening on the inner end surface thereof protruding toward the box body, the cover body protrusion is provided along the inner side wall of the box body opening, a cover body groove is provided along the outer side of the cover body protrusion and is concave relative to the cover body surface, and a box body protrusion corresponding to the cover body groove and extending outward from the inner wall of the box body is provided on the end surface of the box body opening; when the inner end surface of the cover body abuts against the end surface of the box body opening, the box body protrusion enters the cover body groove, and the cover body protrusion enters the box body along the inner side wall of the box body, so that the cover body closes the box body;

[0008] The box body is provided with a plurality of wire inlets on the surface, and a clamping structure is provided in the box body on one side of the wire inlets, and the wire inlets pass through the clamping structure, and the clamping structure comprises a fixed clamping block and a movable clamping block respectively arranged on both sides of the wire inlets, and the movable clamping block moves from the box body opening side toward the fixed clamping block to clamp the passing cables;

[0009] A plurality of closing blocks are provided between the movable clamping block and the inner wall of the box corresponding to the wire inlet, and the closing blocks are elastically connected to the movable clamping block. The closing blocks move toward the wire inlet along the inner wall of the box under the action of elastic force, and close the wire inlet when no cable enters the corresponding wire inlet.

[0010] As a further improvement of the utility model, a push protrusion is provided on the end surface of the cover protrusion facing the box body corresponding to the movable clamping block, and when the box body is closed, the push protrusion abuts against the movable clamping block, squeezing the movable clamping block to compress the cable.

[0011] As a further improvement of the present invention, the box body protrusion is made of a sealing elastic material.

[0012] As a further improvement of the present invention, a closing groove is provided on the end surface of the fixed clamping block facing the movable clamping block corresponding to the closing block, and the closing block enters the closing groove to close the wire inlet.

[0013] As a further improvement of the present invention, clamping arms are provided on both sides of the fixed clamping block and protrude toward the opening side of the box body, clamping grooves are provided on the sides facing each other of the clamping arms, and clamping slide rails corresponding to the clamping grooves are provided on both sides of the movable clamping block. The clamping slide rails move in the clamping groove to realize smooth movement of the movable clamping block.

[0014] As a further improvement of the present utility model, a plurality of movable grooves are arranged between the movable clamping block and the inner wall of the box body corresponding to the closing block, inward-concave limiting grooves are arranged on both sides of the movable groove facing each other, and closing protrusions are arranged on both sides of the closing block corresponding to the limiting grooves, and the closing protrusions are connected to the movable clamping block through elastic components in the limiting grooves, and the elastic force of the elastic components drives the closing block to move toward the wire inlet.

[0015] As a further improvement of the present invention, after the cover is closed on the box, it is locked with bolts through screw holes corresponding to the outer surface of the cover and the end surface of the box opening.

[0016] As a further improvement of the present invention, the box body and the cover body are connected via a rotary locking structure, and the cover body rotates around the rotary locking structure as an axis to close the box body.

[0017] Beneficial effects:

[0018] By setting a closable cover body corresponding to the box opening, the box body protrusion enters the cover body groove, and the cover body protrusion fits with the inner wall of the box, so that the side end face of the box opening and the inner end face of the cover body are closely fitted, that is, the cover body seals the box body. By setting a closing block to automatically close the idle inlet, the double sealing of the junction box of the utility model is achieved.

[0019] Double sealing prevents external moisture, dust, debris, etc. from entering the junction box, thereby protecting electrical equipment and circuits from damage and ensuring the safe and reliable operation of electrical equipment. Sealing can prevent electrical equipment from getting damp, short circuits, leakage, etc., while also extending the service life of the equipment and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a double-sealed instrument junction box of the utility model;

[0021] Figure 2 This is a schematic diagram of the box structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the cover structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the clamping structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the movable clamping block of the utility model;

[0025] Explanation of marks in the figure: 100, box body; 110, end face of the opening side of the box body; 120, box body protrusion; 130, wire inlet; 200, cover body; 210, inner end face of the cover body; 220, cover body protrusion; 221, push protrusion; 230, cover body groove; 240, screw hole; 300, clamping structure; 310, fixed clamping block; 311, closed groove; 312, clamping arm; 313, clamping groove; 320, movable clamping block; 321, clamping slide rail; 322, movable groove; 323, limit groove; 324, elastic component; 330, closed block; 331, closed protrusion; 400, cable; 500, rotary locking structure. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0027] Implementation example:

[0028] like Figure 1As shown, a double-sealed instrument junction box includes a box body 100 vertically hung on a wall and a cover body 200 for closing the box body 100. The cover body 200 is connected to the box body 100 through a rotary locking structure 500. In this embodiment, the rotary locking structure is a metal hinge, and the cover body 200 closes and opens the box body 100 by rotating.

[0029] like Figure 2 and 4 As shown, the box body 100 is a hollow structure, and the box body opening side end surface 110 is surrounded by a box body protrusion 120 extending outward along the inner wall of the box body 100. In this pushing implementation, the box body protrusion 120 is made of rubber material. A wire inlet 130 is provided at the lower end of the box body 100, and a clamping structure 300 is provided at the bottom of the box. The wire inlet 130 passes through the clamping structure 300, and a fixed clamping block 310 and a movable clamping block 320 are respectively provided on both sides of the wire inlet 130. Clamping arms 312 are extended from both sides of the fixed clamping block 310, and clamping grooves 313 are provided facing each other on the clamping arms 312. Clamping rails 321 are protruding on both sides of the movable clamping block 320. The clamping rails 321 and the clamping grooves 313 are correspondingly provided and matched in size. The clamping rails 321 enter the clamping grooves 313 and move, so that the movable clamping block 320 and the fixed clamping block 310 clamp the cable 400 entering from the wire inlet 130.

[0030] like Figure 3 As shown, the cover body 200 is a flat block, and the inner end surface 210 of the cover body facing the box body 100 is provided with a cover body protrusion 220 around the end surface 110 of the box opening, and a surrounding cover body groove 230 is provided close to the cover body protrusion 220. The cover body groove 230 and the box body protrusion 120 are correspondingly arranged and matched in size. When the cover body 200 and the box body 100 are closed, the box body protrusion 120 enters the cover body groove 230, and the inner end surface 210 of the cover body is fitted with the end surface 110 of the box opening. The cover body protrusion 220 fits into the box body 100 along the inner wall of the box, and then is locked through the corresponding screw holes 240 on the surface of the cover body 200 and the box body 100, thereby realizing the sealed and tight closure of the box body 100 and the cover body 200. A pushing protrusion 221 is also protruded from the front end of the cover protrusion 220 . When the cover 200 is closed, the pushing protrusion 221 pushes the movable clamping block 320 to a state where the movable clamping block 310 clamps the cable 400 .

[0031] like Figure 5As shown, a movable closing block 330 is provided on the movable clamping block 320 corresponding to the inlet 130, and a concave movable groove 322 is formed between the movable clamping block 320 and the inner wall of the box body 100. The closing block 330 moves toward the inlet 130 in the movable groove 322. The two ends of the closing block 330 are protrudingly provided with closing protrusions 331. The two sides of the movable groove 322 facing each other are provided with limiting grooves 323 corresponding to the closing protrusions 331. The limiting groove 323 is provided with an elastic component 324. In this embodiment, the elastic component Component 324 is a spring, and the upper end surface of the closing block 330 is connected to the end surface of the limiting groove 323 through the spring. The spring drives the closing block 330 to move toward the line inlet 130. When a cable 400 enters the line inlet 130, the closing block 130 and the movable clamping block 320 clamp the cable 400 on the fixed clamping block 310 together; when no cable 400 enters the line inlet 130, the closing block 330 moves toward the fixed clamping block 310 and enters the closing groove 311 to close the line inlet 130.

[0032] In the initial state, the inlet 130 is closed by the closing block 330. When in use, the cable 400 needs to be manually pushed open when entering from the inlet 130. After the cable 400 is inserted into the box 100 and the wiring is completed, the cover 200 is closed, and the movable clamping block moves toward the fixed clamping block under the pressure of the push protrusion. The two cooperate to clamp the cable, and the bolts are passed through the cover 200 and the screw holes 240 of the box 100 to achieve sealing. The gap between the box 100 and the cover 200 enters the cover groove 230 through the box protrusion 120, and the double seal of the cover protrusion 220 and the inner wall of the box 100 is tightly closed, and the sealing of the idle inlet 130 further improves the sealing effect of the junction box of the utility model.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A double sealed instrument junction box, characterized in that: It comprises a hollow box body with an opening on one side and a cover body closing the box body at the opening; The cover body is provided with a cover body protrusion surrounding the box body opening on the inner end surface thereof protruding toward the box body, the cover body protrusion is provided along the inner side wall of the box body opening, a cover body groove is provided along the outer side of the cover body protrusion and is concave relative to the cover body surface, and a box body protrusion corresponding to the cover body groove and extending outward from the inner wall of the box body is provided on the end surface of the box body opening; when the inner end surface of the cover body abuts against the end surface of the box body opening, the box body protrusion enters the cover body groove, and the cover body protrusion enters the box body along the inner side wall of the box body, so that the cover body closes the box body; The box body is provided with a plurality of wire inlets on the surface, and a clamping structure is provided in the box body on one side of the wire inlets, and the wire inlets pass through the clamping structure, and the clamping structure comprises a fixed clamping block and a movable clamping block respectively arranged on both sides of the wire inlets, and the movable clamping block moves from the box body opening side toward the fixed clamping block to clamp the passing cables; A plurality of closing blocks are provided between the movable clamping block and the inner wall of the box corresponding to the wire inlet, and the closing blocks are elastically connected to the movable clamping block. The closing blocks move toward the wire inlet along the inner wall of the box under the action of elastic force, and close the wire inlet when no cable enters the corresponding wire inlet.

2. The double sealed instrument junction box according to claim 1, characterized in that: The end surface of the cover body protrusion facing the box body is provided with a pushing protrusion corresponding to the movable clamping block. When the box body is closed, the pushing protrusion abuts against the movable clamping block to squeeze the movable clamping block to compress the cable.

3. The double sealed instrument junction box according to claim 1, characterized in that: The box body protrusion is made of sealing elastic material.

4. The double sealed instrument junction box according to claim 1, characterized in that: The end surface of the fixed clamping block facing the movable clamping block is provided with a closing groove corresponding to the closing block, and the closing block enters the closing groove to close the wire inlet.

5. The double sealed instrument junction box according to claim 1, characterized in that: Clamping arms are provided on both sides of the fixed clamping block, protruding toward the opening side of the box body, and clamping grooves are provided on the sides facing the clamping arms. Clamping slide rails corresponding to the clamping grooves are provided on both sides of the movable clamping block, and the clamping slide rails move in the clamping grooves to realize smooth movement of the movable clamping block.

6. The double sealed instrument junction box according to claim 1, characterized in that: A plurality of movable grooves are provided between the movable clamping block and the inner wall of the box body corresponding to the closing block, and concave limiting grooves are provided on both sides of the movable groove facing each other. Closing protrusions are provided on both sides of the closing block corresponding to the limiting grooves. The closing protrusions are connected to the movable clamping block through elastic components in the limiting grooves, and the elastic force of the elastic components drives the closing block to move toward the wire inlet.

7. The double sealed instrument junction box according to claim 1, characterized in that: After the cover is closed on the box, it is locked with bolts through screw holes corresponding to the outer surface of the cover and the end surface of the box opening.

8. The double sealed instrument junction box according to claim 1, characterized in that: The box body and the cover body are connected via a rotary locking structure, and the cover body rotates around the rotary locking structure to close the box body.

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