CN218124238U - Explosion-proof box - Google Patents

Abstract

The utility model discloses an explosion-proof box, include: the electronic device is arranged in the box body, and a mounting hole is formed in the side wall of the box body; the connection bus is provided with a plurality of first terminals connected with the electronic device and a plurality of second terminals used for being connected with external electric appliances; the sealing element is arranged at the mounting hole, a wire passing hole is formed in the sealing element, the connecting bus penetrates through the wire passing hole and is tightly attached to the inner wall of the wire passing hole, and the gap between the connecting bus and the mounting hole is sealed through the sealing element. A plurality of electric wires are integrally connected to the connecting bus, the connecting bus penetrates through the box body and then is connected with each wiring end of the electronic device in the box body, wiring of an internal circuit and an external circuit is achieved, meanwhile, a gap between the connecting bus and the mounting hole is sealed through a sealing piece, and sealing performance is guaranteed. When threading, the connecting bus with a plurality of wires can pass through the sealing element once, so that the threading workload is reduced, and the assembly efficiency is improved.

Description

Explosion-proof box

Technical Field

The application relates to the technical field of air conditioning equipment, in particular to an explosion-proof box.

Background

The air conditioner is internally provided with electronic devices such as a relay, an alternating current contactor and the like, the electronic devices can generate electric sparks in the use process, and in addition, the refrigerants used by the conventional air conditioner are inflammable and explosive, so that the electronic devices are required to be isolated in a closed space, and the electronic devices are protected by the waterproof function of the closed space.

The patent 212057668U granted in china provides an explosion-proof box and an air conditioner, wherein a box body is provided with a wire passing mounting piece with a plurality of wire passing holes, and a plurality of wires connected with an electric device respectively pass through the wire passing holes, so that the sealing performance of the product is ensured while the wiring is realized. However, in this solution, since a plurality of wires need to be threaded through the wire passing mounting member one by one, the workload of product assembly is increased, and the assembly efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: there is provided an explosion-proof case capable of solving the above-mentioned problems occurring in the prior art.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an explosion-proof enclosure comprising:

the electronic device is arranged in the box body, and a mounting hole is formed in the side wall of the box body;

a connection bus having a plurality of first terminals connected to the electronic device and a plurality of second terminals for connection to an external electrical appliance;

the sealing element is arranged at the mounting hole, a wire passing hole is formed in the sealing element, the connecting bus penetrates through the wire passing hole and is tightly attached to the inner wall of the wire passing hole, and the gap between the connecting bus and the mounting hole is sealed through the sealing element.

Optionally, the sealing element includes a supporting cylinder, a sealing sleeve and a fastening element, the supporting cylinder is connected with the box body, the supporting cylinder is provided with a conical clamping sleeve portion, the wire passing hole is formed in the sealing sleeve, the sealing sleeve is located on the inner side of the conical clamping sleeve portion, the fastening element adjusts the tightening degree of the conical clamping sleeve portion outside the conical clamping sleeve portion, and then the tightness degree between the sealing sleeve and the connection bus is adjusted.

Optionally, the supporting cylinder further has a first threaded portion, the root of the tapered clamping sleeve portion is connected with the first threaded portion, the fastener has an inner taper hole matched with the tapered clamping sleeve portion, the fastener is in threaded connection with the first threaded portion, the extrusion degree of the inner taper hole on the tapered clamping sleeve portion is changed by adjusting the screwing-in distance of the fastener, and then the tightening degree of the tapered clamping sleeve portion is adjusted.

Optionally, the support cylinder further has a second threaded portion and an outer retainer ring, and the outer retainer ring is located between the first threaded portion and the second threaded portion; the sealing element further comprises a locking nut, the second thread portion penetrates through the mounting hole and is in threaded connection with the locking nut, and the outer retainer ring and the locking nut tightly support the inner side wall and the outer side wall of the box body respectively, so that the sealing element is mounted at the mounting hole.

Optionally, a waterproof ring is clamped between the outer retainer ring and the box body.

Optionally, at least one electronic device is arranged in the box body, each electronic device is provided with a group of input wiring ends and a group of output wiring ends, each group of the input wiring ends and each group of the output wiring ends are correspondingly connected with one connecting bus, and the number of the mounting holes and the number of the sealing pieces correspond to the number of the connecting buses.

Optionally, the input terminal and the output terminal are respectively disposed on two opposite sides of the electronic device, and the mounting holes are correspondingly disposed on two opposite side walls of the box body.

Optionally, the box body includes a box base and a box upper cover, the electronic device is installed in the box base, and the installation hole is formed in a side wall of the box base; the box upper cover covers the box base.

Optionally, the box body further includes a sealing ring, a lower supporting edge parallel to the sealing ring is arranged on one side of the box base close to the box upper cover, an upper supporting edge parallel to the sealing ring is arranged on one side of the box upper cover close to the box base, and the sealing ring is clamped between the lower supporting edge and the upper supporting edge.

Optionally, one side of the box base, which is far away from the box upper cover, is connected with an installation frame.

The beneficial effect of this application does: the utility model provides an explosion-proof box connects a plurality of electric wire integrated on connecting the bus, and connecting the bus passes behind the box body and is connected with each wiring end of the inside electron device of box body, realizes the wiring of inner and outer circuit, and the while is through the clearance between sealing member sealing connection bus and the mounting hole, ensures sealing performance. Therefore, when threading, the connecting bus with a plurality of wires can pass through the sealing element once, thereby reducing the threading workload and improving the assembly efficiency.

Drawings

The present application will be described in further detail below with reference to the accompanying drawings and examples.

FIG. 1 is an exploded view of an explosion-proof enclosure according to an embodiment of the present application;

fig. 2 is an exploded view of a seal according to an embodiment of the present application.

In the figure:

1. a box body; 11. a cassette base; 111. a lower supporting edge; 12. a box upper cover; 121. an upper support edge; 13. a seal ring; 2. an electronic device; 3. connecting a bus; 4. a seal member; 41. a support cylinder; 411. a tapered collar portion; 412. a first threaded portion; 413. an outer retainer ring; 414. a second threaded portion; 42. sealing sleeves; 421. a wire passing hole; 43. a fastener; 44. locking the nut; 5. and (7) mounting frames.

Detailed Description

In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present application clearer, the following describes technical solutions of embodiments of the present application in further detail, and it is obvious that the described embodiments are only a part of embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the present embodiment provides an explosion-proof box, which includes a box body 1, a connection bus 3, and a sealing member 4;

an electronic device 2 is arranged in the box body 1, and a mounting hole is formed in the side wall of the box body 1;

the connection bus 3 is provided with a plurality of first terminals connected with the electronic devices 2 and a plurality of second terminals used for being connected with external electric appliances;

the sealing element 4 is arranged at the mounting hole, a wire passing hole 421 is arranged in the sealing element 4, the connecting bus 3 passes through the wire passing hole 421 and is tightly attached to the inner wall of the wire passing hole 421, and the sealing element 4 seals a gap between the connecting bus 3 and the mounting hole.

In particular, the connection bus 3 can be understood as a cable formed by a plurality of wires, each provided with an insulating layer, assembled side by side, the outer layer of which is uniformly coated with the insulating layer, each wire having a first terminal and a second terminal. Inside box body 1, every wiring end on electron device 2 corresponds and connects a first wiring end, and outside box body 1, each electrical apparatus is connected with electric wire one end respectively, and the other end of each electric wire extends to near box body 1 and with the second wiring end to realize the switch-on of external circuit and electron device 2 inside box body 1. The connection bus 3 of the present embodiment can be understood as a connection bridge between the internal electronic device 2 and the external circuit.

Therefore, in the structure of the explosion-proof box of this embodiment, a plurality of wires are integrally connected to the connection bus 3, and the connection bus 3 passes through the box body 1 and then is connected to the terminals of the electronic device 2 inside the box body 1, so as to realize the connection of the internal and external circuits, and simultaneously, the sealing element 4 seals the gap between the connection bus 3 and the mounting hole, thereby ensuring the sealing performance. Therefore, when threading, the connecting bus 3 with a plurality of wires can pass through the sealing element 4 once, thereby reducing the threading workload and improving the assembly efficiency. Meanwhile, the outer wall of the connecting bus 3 can be tightly matched with the wire passing hole 421 of the sealing element 4, so that the explosion-proof box of the scheme also has the advantage of good sealing performance.

Regarding the structure of the sealing element 4 of the present disclosure, in some embodiments, referring to fig. 2, the sealing element 4 includes a supporting cylinder 41, a sealing sleeve 42, and a fastening element 43, the supporting cylinder 41 is connected to the box body 1, the supporting cylinder 41 has a tapered clamping sleeve portion 411, the wire passing hole 421 is formed in the sealing sleeve 42, the sealing sleeve 42 is located inside the tapered clamping sleeve portion 411, and the fastening element 43 adjusts a tightening degree of the tapered clamping sleeve portion 411 outside the tapered clamping sleeve portion 411, so as to adjust a tightness degree between the sealing sleeve 42 and the connecting bus 3.

Specifically, the tapered jacket portion 411 includes a plurality of clips arranged at intervals, and each clip is annularly arranged on the support barrel 41, so that a tapered clamping space is formed inside the tapered jacket portion 411, and when being squeezed by an external force, each clip contracts inwards, the clamping space is reduced, and the sealing sleeve 42 is further pushed to contract and deform and tightly attach to the connection bus 3. The fastener 43 is used to adjust the tightening degree of the tapered collar 411, and it only needs to have an inner hole with adjustable size, such as a hoop or a sleeve with a tapered inner hole. The sealing sleeve 42 is preferably a conical sleeve structure corresponding to the conical sleeve part 411, the outer wall of the sealing sleeve is attached to the inner wall of the supporting cylinder 41, and the inner wall of the sealing sleeve is attached to the connecting bus 3, so that the gap between the supporting cylinder 41 and the connecting bus 3 is sealed, and a waterproof function is realized; preferably, the sealing sleeve 42 is made of a flexible sealing material, such as rubber, silica gel, etc., to ensure that the outer wall of the connection bus 3 can be tightly attached after being extruded and deformed.

Therefore, based on the structure of the sealing element 4, the size of the wire passing hole 421 can be adjusted, when threading is performed, the fastening element 43 can be loosened to loosen the sealing sleeve 42, the connecting bus 3 passes through the supporting cylinder 41 and the sealing sleeve 42, and then the fastening element 43 is fastened to compress the connecting bus 3. In addition, because the size adjustability of the wire through hole 421, the sealing part 4 of the scheme can also meet the sealing requirements of the connection buses 3 with different diameters, and the sealing device is good in adaptability and better in sealing performance.

In order to achieve the connection between the fastening member 43 and the supporting cylinder 41, in some embodiments, the supporting cylinder 41 further has a first threaded portion 412, the root of the tapered sleeve portion 411 is connected to the first threaded portion 412, the fastening member 43 has an inner tapered hole matched with the tapered sleeve portion 411, the fastening member 43 is in threaded connection with the first threaded portion 412, and the degree of compression of the tapered sleeve portion 411 by the inner tapered hole is changed by adjusting the screwing distance of the fastening member 43, so that the degree of tightening of the tapered sleeve portion 411 is adjusted.

In the structure, the fastening piece 43 is in threaded connection with the supporting cylinder 41, so that the extrusion degree of the fastening piece 43 on the conical jacket part 411 can be adjusted steplessly, and the tightness of the fit between the internal sealing sleeve 42 and the connecting bus 3 is ensured; and the fastener 43 can surround the entire periphery of the tapered jacket portion 411 to prevent moisture from entering into the gap of the tapered jacket portion 411. In the structure of the sealing sleeve 42, it is preferably a tapered sleeve, one end of the sealing sleeve 43 extends into the first threaded portion 412, and the fastening member 43 is in interference fit with the inner hole of the first threaded portion 412, so that after the sealing sleeve 42 is installed in the support cylinder 41, the outer wall thereof can tightly fit the inner wall of the support cylinder 41, and effective water proofing is realized.

In order to mount the sealing element 4 on the mounting hole of the box body 1, in some embodiments, the supporting cylinder 41 further has a second threaded portion 414 and an outer retainer 413, and the outer retainer 413 is located between the first threaded portion 412 and the second threaded portion 414; the sealing element 4 further comprises a locking nut 44, the second thread part 414 penetrates through the mounting hole and is in threaded connection with the locking nut 44, and the outer retainer ring 413 and the locking nut 44 respectively push against the inner side wall and the outer side wall of the box body 1, so that the sealing element 4 is mounted at the mounting hole.

Specifically, the outer diameter of the outer retainer ring 413 and the outer diameter of the locking nut 44 are both larger than the diameter of the mounting hole, and the outer diameter of the second thread portion 414 is smaller than the diameter of the mounting hole, during mounting, the second thread portion 414 is aligned to the mounting hole and is installed in the mounting hole in the outer side of the box body 1, the locking nut 44 is connected to the second thread portion 414 from the inner side of the box body 1, the sealing element 4 can be locked on the box body 1 after the locking nut 44 is tightened, and the outer retainer ring 413 is tightly attached to the outer portion of the box body 1, so that the mounting hole is sealed. The structure of the sealing element 1 of the scheme has the advantages of simple installation and good sealing property.

Further, a waterproof ring is clamped between the outer retainer ring 413 and the box body 1. The diameter of the waterproof ring needs to be larger than that of the mounting hole, and the sealing performance of connection between the outer retainer ring 413 and the box body 1 can be further improved through the waterproof ring. Also, preferably, the waterproof ring is a rubber ring or a silica gel ring.

With reference to fig. 1, at least one electronic device 2 is disposed in the case 1, each electronic device 2 has a set of input terminals and a set of output terminals, each set of input terminals and each set of output terminals are correspondingly connected to one connection bus 3, and the number of the mounting holes and the number of the sealing members 4 correspond to the number of the connection buses 3. That is, one electronic device 2 is connected to two corresponding connection buses 3, one sealing member 4 is connected to each connection bus 3, and one mounting hole is connected to each sealing member 4.

In practical application, a plurality of different electronic devices 2 can be simultaneously mounted in the box body 1, so that the plurality of electronic devices 2 can be simultaneously protected, the mounting space is saved, and the material cost is saved. The input terminal and the output terminal of each electronic device 2 are correspondingly connected with one connecting bus 3, so that the circuit confusion of each electronic device 2 can be avoided, the wiring operation during assembly is convenient, and the circuit fault caused by wiring errors is avoided.

Further, the input terminal and the output terminal are respectively arranged on two opposite sides of the electronic device 2, and the mounting holes are correspondingly arranged on two opposite side walls of the box body 1. So, connect bus 3 and stretch into box body 1 in back can be connected with electron device 2 nearby directly, avoid the inside wire winding of box body 1 and lead to the circuit extension, also can avoid the crisscross confusion of circuit.

Regarding the structure of the box body 1, in some embodiments, the box body 1 includes a box base 11 and a box upper cover 12, the electronic device 2 is mounted in the box base 11, and the mounting hole is provided in a side wall of the box base 11; the box upper cover 12 covers the box base 11.

When the electronic device 2 is installed in the box base 11, the connection bus 3 penetrates into the box base 11 and is connected with the electronic device 2, and then the box upper cover 12 is covered on the box base 11. The box body 1 of the scheme is simple in structure, and installation and wiring work of the electronic device 2 are facilitated.

Further, the box body 1 further comprises a sealing ring 13, a lower supporting edge 111 parallel to the sealing ring 13 is arranged on one side of the box base 11 close to the box upper cover 12, an upper supporting edge 121 parallel to the sealing ring 13 is arranged on one side of the box upper cover 12 close to the box base 11, and the sealing ring 13 is clamped between the lower supporting edge 111 and the upper supporting edge 121.

In this way, the sealing performance of the connection between the cartridge base 11 and the cartridge upper cover 12 can be ensured by the packing 13, and the reliability of the mounting of the packing 13 can be ensured by increasing the supporting area of the packing 13 by the arrangement of the lower supporting side 111 and the upper supporting side 121. Preferably, corresponding through holes are formed in the lower supporting edge 111 and the upper supporting edge 121, and during installation, screws penetrate through the through holes of the lower supporting edge 111 and the upper supporting edge 121 and then are connected with nuts, so that the box base 11 and the box upper cover 12 are connected.

In some embodiments, a mounting frame 5 is attached to a side of the cassette base 11 away from the cassette cover 12. So, can fasten the explosion-proof box of this scheme in the quick-witted incasement of air conditioner through mounting bracket 5. Preferably, a connecting hole for installation is formed in the mounting bracket 5, and the mounting bracket 5 can be installed through a screw.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have a special meaning.

In the description herein, references to "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, a person skilled in the art will be able to conceive of other embodiments of the present application without inventive effort, which shall fall within the scope of protection of the present application.

Claims (10)

1. An explosion-proof enclosure, comprising:

the electronic device box comprises a box body (1), wherein an electronic device (2) is installed inside the box body (1), and a mounting hole is formed in the side wall of the box body (1);

a connection bus (3) having a plurality of first terminals for connection to said electronic device (2) and a plurality of second terminals for connection to external electrical appliances;

sealing member (4), install in mounting hole department, line hole (421) have in sealing member (4), connect bus (3) and pass line hole (421) and with closely laminate through the inner wall of line hole (421), through sealing member (4) are sealed connect bus (3) with clearance between the mounting hole.

2. The explosion-proof box according to claim 1, characterized in that the sealing element (4) comprises a supporting cylinder (41), a sealing sleeve (42) and a fastening element (43), the supporting cylinder (41) is connected with the box body (1), the supporting cylinder (41) is provided with a tapered sleeve portion (411), the wire passing hole (421) is formed in the sealing sleeve (42), the sealing sleeve (42) is located inside the tapered sleeve portion (411), and the fastening element (43) adjusts the tightening degree of the tapered sleeve portion (411) outside the tapered sleeve portion (411) so as to adjust the tightness degree between the sealing sleeve (42) and the connection bus (3).

3. The explosion-proof box of claim 2, wherein the supporting cylinder (41) is further provided with a first thread part (412), the root of the tapered sleeve part (411) is connected with the first thread part (412), the fastening piece (43) is provided with an inner taper hole matched with the tapered sleeve part (411), the fastening piece (43) is in threaded connection with the first thread part (412), and the degree of compression of the tapered sleeve part (411) by the inner taper hole is changed by adjusting the screwing-in distance of the fastening piece (43), so that the degree of tightening of the tapered sleeve part (411) is adjusted.

4. A bursting cassette as claimed in claim 3 in which the support cartridge (41) also has a second threaded portion (414) and an external retaining ring (413), the external retaining ring (413) being located between the first threaded portion (412) and the second threaded portion (414); the sealing element (4) further comprises a locking nut (44), the second thread part (414) penetrates through the mounting hole and is in threaded connection with the locking nut (44), and the outer retainer ring (413) and the locking nut (44) tightly push the inner side wall and the outer side wall of the box body (1) respectively, so that the sealing element (4) is mounted at the mounting hole.

5. Explosion-proof box according to claim 4, characterized in that a waterproof ring is sandwiched between the outer collar (413) and the box body (1).

6. Explosion-proof box according to claim 1, characterized in that at least one electronic device (2) is arranged in the box body (1), each electronic device (2) has a set of input terminals and a set of output terminals, each set of input terminals and each set of output terminals are correspondingly connected with one connection bus (3), and the number of the mounting holes and the number of the sealing elements (4) correspond to the number of the connection buses (3).

7. Explosion-proof box according to claim 6, characterized in that the input and output terminals are respectively provided on two opposite sides of the electronic device (2), the mounting holes being provided correspondingly on two opposite side walls of the box body (1).

8. Explosion-proof box according to claim 1, characterized in that the box body (1) comprises a box base (11) and a box upper cover (12), the electronic device (2) is mounted in the box base (11), and the mounting hole is provided in a side wall of the box base (11); the box upper cover (12) covers the box base (11).

9. The explosion-proof box according to claim 8, characterized in that the box body (1) further comprises a sealing ring (13), a lower supporting edge (111) parallel to the sealing ring (13) is arranged on one side of the box base (11) close to the box upper cover (12), an upper supporting edge (121) parallel to the sealing ring (13) is arranged on one side of the box upper cover (12) close to the box base (11), and the sealing ring (13) is clamped between the lower supporting edge (111) and the upper supporting edge (121).

10. Explosion-proof box according to claim 8, characterized in that a mounting frame (5) is connected to the side of the box base (11) remote from the box cover (12).

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