CN205195188U - Flame proof terminal box - Google Patents

Flame proof terminal box Download PDF

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Publication number
CN205195188U
CN205195188U CN201520970306.XU CN201520970306U CN205195188U CN 205195188 U CN205195188 U CN 205195188U CN 201520970306 U CN201520970306 U CN 201520970306U CN 205195188 U CN205195188 U CN 205195188U
Authority
CN
China
Prior art keywords
box body
flame proof
joint
mentioned
flame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520970306.XU
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Chinese (zh)
Inventor
蒋汉贵
冯清泉
李键
黄炼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING NEW SHIJIE ELECTRIC Co Ltd
Original Assignee
CHONGQING NEW SHIJIE ELECTRIC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHONGQING NEW SHIJIE ELECTRIC Co Ltd filed Critical CHONGQING NEW SHIJIE ELECTRIC Co Ltd
Priority to CN201520970306.XU priority Critical patent/CN205195188U/en
Application granted granted Critical
Publication of CN205195188U publication Critical patent/CN205195188U/en
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Abstract

The utility model discloses a flame proof terminal box, include the box body, connect, connect headrest piece and lid, the above -mentioned joint and box body threaded connection, the aforesaid connects the headrest piece to be located between joint and the box body, above -mentioned connect with connect the headrest piece on all be equipped with the through -hole, be used for the threading, the inside and outside both sides of above -mentioned box body open end all are equipped with the flame proof screw thread, and the open end of above -mentioned lid is equipped with the recess, and the both sides face in the recess is equipped with the flame proof screw thread. The utility model discloses taking two flame proof screw thread flame proofs, with the wire -terminal and external environment isolation of box body inside, having promoted the security effectively, above -mentioned each flame proof screw thread superposes with the sealed reacting phase of gasket, has further promoted the separation explosion -proof of terminal box.

Description

A kind of explosion-proof connection box
Technical field
The utility model belongs to technical field of electric appliances, especially relates to a kind of electrical junction box.
Background technology
The electric equipment be used in explosive atmosphere must adopt flame proof pattern, avoids the explosive mist of the electric spark initiation of electric equipment, blasts, produce security incident.In electric wiring lays, often run into the connection of cable, daily connection adopts electrical adhesive tape to be wound around parcel to protect joint area usually, but in explosive atmosphere, this way exists very large potential safety hazard.Flame-proof type syndeton now should be adopted to protect power lug position, and so-called flame proof refers to keeps apart pyrophoric for product position and flammable and explosive substance, is closed completely at this position.Common flame proof form mainly contains plane, seam and threaded flame-proof type three kinds of forms.Anti-explosion terminal box conventional is at present easy for manufacturing, and is all generally to adopt gasket seal box body to carry out flame proof, but pad very easily damages in disassembly process, in addition, the box body caused because processing and fabricating is bad or lid buckling deformation, also cannot compacting pad, impact sealing, produces potential safety hazard.In view of this, a kind of new type explosion proof terminal box is designed very necessary.
Utility model content
The purpose of this utility model is to solve the problem, and provides a kind of more safe and reliable explosion-proof connection box, eliminates the potential safety hazard of circuit interface in electrical system.
The technical scheme that the utility model adopts is as follows:
A kind of explosion-proof connection box, comprises box body, joint, joint gasket and lid; Above-mentioned joint adopts with box body and is threaded, and above-mentioned joint gasket is between joint and box body; Above-mentioned joint and joint gasket are equipped with through hole, for threading; Inside and outside above-mentioned box opening end, both sides are equipped with flame proof thread, and the openend of above-mentioned lid is provided with groove, and the two sides in groove are provided with flame proof thread.
Preferably, seal gasket is provided with between above-mentioned box body and lid connecting end surface.
Preferably, the screw thread between above-mentioned joint and box body makes flame proof thread.
Preferably, above-mentioned lid makes the hexagonal configuration of similar bolt head.
Preferably, the length of above-mentioned flame proof thread is not less than 15mm.
Preferably, the button number of above-mentioned flame proof thread is no less than 8 buttons.
Beneficial effect: the utility model takes two flame proof thread flame proof, effectively the power lug of tray interior and external environment are isolated, ensure that fail safe, the sealing function of above-mentioned each flame proof thread and pad is superimposed, improves the Separated explosion-proof of terminal box further.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
By particular specific embodiment, execution mode of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can be well understood to other advantages of the present utility model and effect.
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, a kind of explosion-proof connection box, comprises box body 1, joint 2, joint gasket 3, seal gasket 4 and lid 5.Above-mentioned box body 1 is provided with two threaded through wires holes, this through wires hole is a stepped hole, joint 2 is provided with in through wires hole, joint 2 is one with the bolt pattern of through hole, joint gasket 3 is apertured elastic pad, joint gasket 3 is pressed on the step of above-mentioned stepped hole by joint 2, during wiring, electric wire is extend into the inside of box body 1 through joint 2 and joint gasket 3, for perforation place of sealed wire, joint gasket 3 adopts resilient non-conductive pad, circular cable is closely surrounded, play the effect that box body 1 is sealed, seal for preventing electric wire wobble effects, this joint gasket 3 should do thicker.Box body 1 with lid 5 because connecting portion contact area is larger, deathtrap is large, for the connection contact site of adequate closure box body 1 and lid 5, to reach the object of Separated explosion-proof, the structure that the utility model takes two flame proof thread to be connected with the contact site of box body 1 lid 5 and to seal; It is specifically: in the openend of box body 1, outside is equipped with flame proof thread 6, so-called flame proof thread, and its structure is identical with general screw thread, is that its machining accuracy is higher, threaded connection design exists some differences; Such as, be screwed and regard to I class, II A and II B shell, the minimum joggle number that its flame-proof type is screwed face is 5 buttons, and when fit volume is greater than 100 cubic centimetres, minimum thread engagement length is at least 8mm; The openend of above-mentioned lid 5 is provided with a circular groove, and the two sides in groove are equipped with the flame proof thread matched with above-mentioned box body 1.Adopt two groups of flame proof threads 6 to be connected, more effectively ensure that the overall flame proof of terminal box, and while flame proof, be convenient to dismounting again.
It should be noted that needs strictly make by relevant criterion when making processing above-mentioned flame proof thread, its surface average roughness Ra does not allow more than 6.3 μm, and thread tolerance grade meets the 6g/6H in GB/T197-2003 and GB/T2516-2003.Because lid 5 and box body 1 are two being threaded, will meet closely cooperating of two groups of screw threads, its precision especially will be guaranteed simultaneously.Above-mentioned joint also can arrange multiple as required, uses for many group cable connections.
Preferably, for fully realizing box body 1 and the sealing of lid 5 connecting portion, setting up seal gasket 4 between special connecting end surface between box body 1 and lid 5, together realizing the flame proof function of terminal box with flame proof thread.
Preferably, be enhanced leaktightness, promote flame proof, the screw thread between above-mentioned joint 2 and box body 1 also makes flame proof thread.
Preferably, for ease of the mounting or dismounting of lid 5, lid 5 makes the hexagonal configuration of similar bolt head.
Preferably, for improving threaded flame-proof type, above-mentioned flame proof thread 6 length is not less than 15mm.
Preferably, for improving threaded flame-proof type, the button number of above-mentioned flame proof thread 6 is no less than 8 buttons.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.

Claims (6)

1. an explosion-proof connection box, comprises box body, joint, joint gasket and lid; It is characterized in that: described joint adopts with box body and is threaded, and described joint gasket is between joint and box body; Described joint and joint gasket are equipped with through hole, for threading; Inside and outside described box opening end, both sides are equipped with flame proof thread, and the openend of described lid is provided with groove, and the two sides in groove are provided with flame proof thread.
2. explosion-proof connection box according to claim 1, is characterized in that being provided with seal gasket between described box body and lid connecting end surface.
3. explosion-proof connection box according to claim 1, is characterized in that the screw thread between described joint and box body makes flame proof thread.
4. explosion-proof connection box according to claim 1, is characterized in that described lid makes the hexagonal configuration of similar bolt head.
5. explosion-proof connection box according to claim 1, is characterized in that the length of described flame proof thread is not less than 15mm.
6. explosion-proof connection box according to claim 1, is characterized in that the button number of described flame proof thread is no less than 8 buttons.
CN201520970306.XU 2015-11-30 2015-11-30 Flame proof terminal box Active CN205195188U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520970306.XU CN205195188U (en) 2015-11-30 2015-11-30 Flame proof terminal box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520970306.XU CN205195188U (en) 2015-11-30 2015-11-30 Flame proof terminal box

Publications (1)

Publication Number Publication Date
CN205195188U true CN205195188U (en) 2016-04-27

Family

ID=55788144

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520970306.XU Active CN205195188U (en) 2015-11-30 2015-11-30 Flame proof terminal box

Country Status (1)

Country Link
CN (1) CN205195188U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565399A (en) * 2017-08-25 2018-01-09 合肥智鼎电控自动化科技有限公司 A kind of free modular high-low pressure cabinet
CN108336702A (en) * 2018-03-05 2018-07-27 国网甘肃省电力公司经济技术研究院 A kind of electrical junction box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565399A (en) * 2017-08-25 2018-01-09 合肥智鼎电控自动化科技有限公司 A kind of free modular high-low pressure cabinet
CN108336702A (en) * 2018-03-05 2018-07-27 国网甘肃省电力公司经济技术研究院 A kind of electrical junction box

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