CN108631238B - Electrical junction box - Google Patents

Electrical junction box Download PDF

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Publication number
CN108631238B
CN108631238B CN201810522876.0A CN201810522876A CN108631238B CN 108631238 B CN108631238 B CN 108631238B CN 201810522876 A CN201810522876 A CN 201810522876A CN 108631238 B CN108631238 B CN 108631238B
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China
Prior art keywords
box
groove
annular
fixed
limiting
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CN201810522876.0A
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CN108631238A (en
Inventor
李培江
郑孝怡
赵建伟
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Quzhou College of Technology
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Quzhou College of Technology
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Priority to CN201810522876.0A priority Critical patent/CN108631238B/en
Publication of CN108631238A publication Critical patent/CN108631238A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/088Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/16Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box

Abstract

The invention relates to a junction box and discloses an electric junction box which comprises a box body (1) and a box cover (2), wherein a groove (101) is formed in the box body (1), and the longitudinal section of the groove (101) is in a right trapezoid shape; a raised line (201) matched with the groove (101) is arranged on the box cover (2), a water receiving groove (103) is formed in the front end face of the box body (1), and a water passing hole (104) communicated with the water receiving groove (103) is formed in the bottom face of the groove (101); the wiring terminal (4) is fixed in the box body (1), and the wiring terminal (4) comprises a fixing seat (401), a plurality of fixed joints (402) arranged in the fixing seat (401) and movable joints (403) inserted on the fixed joints (402). The waterproof box can effectively prevent rainwater from permeating into the box body from a connecting gap between the box body and the box cover, achieves high-efficiency waterproof performance, can efficiently and quickly realize connection and disconnection of two sections of wires, can reduce torsional damage of the wires, and prolongs the service life.

Description

Electrical junction box
Technical Field
The present invention relates to a junction box, and more particularly, to an electrical junction box.
Background
In home decoration, the junction box is one of electrical accessories, because the electric wire for decoration passes through the electric wire tube, the wire is longer at the joint part of the electric wire, or the junction box is adopted for transition when the electric wire tube is required to turn, the electric wire tube is connected with the junction box, and the electric wire in the wire tube is connected in the junction box to play the roles of protecting the electric wire and connecting the electric wire.
The terminal box is in the use, and generally all pass through the screw fixation with binding post inside the box body earlier, then through the screw fixation lid, through the screw fastening between lid and the box body, because the internal portion of fit is binding post, need guarantee the waterproof performance of box body, but the gap department of current box body and lid still can permeate into water, is difficult to reach high-efficient waterproof performance.
In addition, the terminal block is an important component of the junction box, which is used to achieve connection of the electric wires within the junction box. The existing connecting terminal generally adopts a section of metal sheet sealed in insulating plastic, both ends of the metal sheet are provided with holes for inserting leads, screws are used for fastening or loosening, for example, two leads are connected sometimes and disconnected sometimes, and then the leads can be connected by using terminals and disconnected at any time without welding or winding the leads together, so that the connecting terminal is convenient and quick. However, the wiring terminals in the conventional wiring box are generally integrated, the two ends of the insulating plastic shell are connected with the wires through screws, the connection of the two wires can be realized through the wiring terminals, the connection is not flexible enough, and when the wiring terminals are used for special installation stations, problems of wire winding, wire pulling and the like exist, and the problems of wire short circuit, wiring terminal damage and the like at the wiring terminals are caused.
Disclosure of Invention
The invention provides an electric junction box, aiming at the problems that the waterproof performance of the junction box needs to be improved and the connection of a wire of a junction terminal is inflexible in the prior art.
In order to solve the technical problem, the invention is solved by the following technical scheme:
the electrical junction box comprises a box body and a box cover, wherein the upper end surface of the box body and two sides along the width direction of the box body are provided with grooves which are wide at the top and narrow at the bottom, the longitudinal section of each groove is in a right trapezoid shape, the side surface close to the center of the box body is a right-angle surface, the side surface far away from the center of the box body is an inclined surface, and the inclined surface and the bottom of each groove form an included angle of 100 degrees and 140; the lower end face of the box cover is provided with a raised line in interference fit with the upper groove of the box body, the bottom face of the groove is provided with a threaded hole connected with the box cover through a bolt, the front end face of the box body is provided with a water receiving groove which extends along the length direction of the groove and is positioned right below the groove, the bottom face of the groove is provided with a plurality of water passing holes which are uniformly distributed and communicated with the water receiving groove, and the bottom face of the water receiving groove is an inclined plane with a high inside and; after lid and box body lid closed, the rainwater can flow into the recess bottom surface along the inclined plane on the gap department of lid and box body then is gone into by the infiltration gap department then, can't continue to flow into inside the box body, flows to the water receiving tank of recess below through the water discharge hole on the recess bottom surface in, then trickles towards the delivery port department of water receiving tank, finally gets into in the water receiving box, effectively avoids the rainwater inside the box body of junction gap department infiltration of box body and lid for this terminal box reaches high-efficient waterproof performance.
The wiring terminal is fixed in the box body and comprises a rectangular fixed seat which is a plastic piece, a plurality of fixed joints which are uniformly arranged in the fixed seat along the length direction of the fixed seat and movable joints which are inserted on the fixed joints, wherein a first lead inserting hole and a joint inserting hole for inserting the movable joints are respectively formed at two ends of each fixed joint, and the first lead inserting hole and the joint inserting hole are respectively arranged on two side surfaces of the fixed seat along the length direction;
the fixed joint comprises a first metal piece fixed in the fixed seat, the first metal piece comprises a cylindrical body, and a first annular bulge and a second annular bulge which are arranged on the inner surface of the cylindrical body and are parallel to each other along the axial direction of the cylindrical body, an annular clamping groove is formed between the first annular bulge and the second annular bulge, a first lead wire insertion hole is formed at the end part of the cylindrical body close to the first annular bulge, and a joint insertion hole is formed at the end part close to the second annular bulge; the position of the inner surface of the cylindrical body, which is provided with the second annular bulge, is provided with an annular groove, a plurality of transverse springs which are uniformly arranged along the depth direction of the annular groove in the length direction are fixed in the annular groove, and the second annular bulge is fixed on the bottom surface of the annular groove through the transverse springs and can be completely retracted into the annular groove;
the movable joint comprises a cylindrical plastic shell, one end of the plastic shell is fixed with a second metal piece, one end of the second metal piece is inserted into the plastic shell, and the other end of the plastic shell is provided with a second wire insertion hole; the second metal piece comprises a cylindrical body with one end inserted into the plastic shell and an annular clamping block which is fixed on the outer side wall of the extending end of the cylindrical body and can be clamped into the annular clamping groove, two annular inner side walls of the annular clamping groove are in mutual contact with two annular outer side walls of the annular clamping block, and the annular clamping block can rotate in the annular clamping groove; the second annular bulge is an annular body, the thickness of the second annular bulge is gradually reduced from the outer surface connected with the transverse spring to the inner surface, the section of the second annular bulge along the axial direction is in an isosceles trapezoid shape, and two side surfaces of the second annular bulge form guide surfaces for guiding the annular fixture block.
The wiring terminal is designed to be connected with the movable connector and the fixed connector in a two-section mode, the movable connector and the fixed connector are connected in a plugging mode, the connection mode is simple, connection and separation of two sections of wires can be achieved efficiently and rapidly, the two sections of connectors can rotate relatively, the wires can be adjusted in a rotating mode after being connected, the wires are prevented from being improperly twisted due to connection, the twisting damage of the wires is reduced, and the service life is prolonged.
Preferably, the water receiving box is arranged on the front end face of the box body and positioned at the water outlet of the water receiving groove.
Preferably, a U-shaped clamping groove is formed in the front end face of the box body and is located at the water outlet of the water receiving groove, and the water receiving box is a box body with an L-shaped longitudinal section and is clamped in the U-shaped clamping groove. The water receiving box is connected to the box body in a plug-in mode, so that the mounting and dismounting modes are very simple, and an operator can pour out water in the water receiving box only by pulling out the water receiving box from the U-shaped clamping groove.
Preferably, a first long groove parallel to the groove is formed in the upper end face of the box body and located on one side, close to the center of the box body, of the groove, a second long groove corresponding to the first long groove in the box body is formed in the box cover, a rubber strip is arranged between the first long groove and the second long groove, and the upper portion and the lower portion of the rubber strip are clamped into the second long groove and the first long groove respectively. The waterproof performance of box body and lid joint gap department is further improved for no matter how much the rainwater infiltration is, inside the homoenergetic guaranteed that the rainwater can not get into the box body, play the limiting displacement each other further between box body and the lid simultaneously, guarantee to align accurately between box body and the lid.
Preferably, the wiring terminal fixing mechanism is arranged inside the box body and on the bottom surface of the box body, the wiring terminal fixing mechanism comprises a fixing plate, the fixing plate is fixed on the bottom surface of the box body through a telescopic connecting seat, the telescopic connecting seat comprises a guide rod fixed on the lower surface of the fixing plate and a guide sleeve fixed on the bottom surface of the box body, a guide groove for the guide rod to be inserted is formed in the middle of the guide sleeve, a compression spring is arranged between the guide rod and the guide sleeve, the compression spring is sleeved on the guide rod, the top of the compression spring is. The wiring terminal can move up and down in the wiring box through the telescopic connecting seat, so that the wiring terminal can stretch out of the wiring box when the wiring and the wiring are disconnected, inconvenience in wiring caused by limitation of the internal space of the box body when the wiring or the dismounting is reduced, the fast and efficient wiring and dismounting process is realized, and the wiring and the dismounting efficiency are effectively improved.
Preferably, the left side surface and the right side surface of the fixing plate are respectively provided with a U-shaped containing groove with an opening facing the side surface of the box body, a limiting plate capable of completely retracting into the U-shaped containing grooves is arranged in the U-shaped containing grooves, the limiting plates are connected to the bottom surface of the U-shaped containing grooves through a plurality of transversely arranged limiting springs, and limiting blocks capable of limiting the limiting plates to move up and down are fixed on the left side surface and the right side surface of the box body inside the box body. Limiting plate and stopper are spacing each other, guarantee the fixed stability of binding post in the box body, through this simple structure, it is very convenient to the regulation of telescopic connection seat, can realize binding post's quick lift.
Preferably, a plurality of ball grooves are uniformly formed in the bottom surface of the annular clamping groove, a ball capable of rotating freely is arranged in each ball groove, an annular rotating plate is further arranged in the annular clamping groove, and the outer surface of the annular clamping block abuts against the inner side surface of the annular rotating plate. Can make the movable joint who is in fixed joint very smooth and easy rotation under annular rotating plate and ball effect, the circumstances such as can not appear blocking or unable rotation for this rotation connection formula binding post's rotation performance obtains optimizing greatly.
Preferably, the inner surfaces of the first wire insertion hole and the second wire insertion hole are in threaded connection with wire limiting parts, each wire limiting part comprises a connecting portion and a limiting portion, the connecting portions are cylindrical and are provided with external threads on the outer side walls, the middle portions of the connecting portions are provided with wire passing holes in long strip shapes, each wire passing hole comprises a wire clamping section in a semicircular shape in cross section and a limiting section in a rectangular shape in cross section, each limiting portion comprises an L-shaped push rod and an arc limiting piece connected to one end portion of the push rod, each arc limiting piece is arranged in each wire passing hole and can move along the length direction of the wire passing hole under the action of the push rod to be clamped and limited together with the wire clamping section of the wire passing hole, the bottom surface of each connecting portion is provided with a long strip groove for the push rod to move along the length. This kind of connected mode can realize the nimble regulation to the wire position, avoids wire contact failure, improves wire connection stability. Meanwhile, the wires are connected only in a pressing mode, the existing screwing is not needed, torsion and pulling force are not generated, and damage to the wire connectors can be fully reduced.
Preferably, the push rod comprises a transverse rod connected with the arc-shaped limiting piece and a longitudinal rod extending out of the elongated groove, a first elastic limiting piece is arranged on the outer surface of the transverse rod, a second elastic limiting piece matched with the first elastic limiting piece is arranged on the groove wall of the elongated groove, and the longitudinal sections of the first elastic limiting piece and the second elastic limiting piece are triangular and can be mutually clamped. Through the spacing piece of first elasticity and the spacing piece of second elasticity on the rectangular groove mutually support to the realization is to the fixed position of the spacing piece of arc.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that:
the design of the box body and the box cover can effectively prevent rainwater from permeating into the box body from a connecting gap between the box body and the box cover, so that the junction box achieves high-efficiency waterproof performance, meanwhile, the connecting terminal is divided into two sections for connection, so that the connection and the disconnection of two sections of wires can be efficiently and quickly realized, the two sections of connectors can rotate relatively, the wires can be adjusted in a rotating mode after being connected, the wires are prevented from being improperly twisted due to the connection, the twisting damage of the wires is reduced, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a cartridge in embodiment 1 of the present invention.
Fig. 2 is a sectional view taken along the plane a-a of fig. 1.
Fig. 3 is a schematic structural view of the case body to which the terminal is fixed in embodiment 1 of the present invention.
Fig. 4 is another schematic structural diagram of the cartridge in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of a box cover in embodiment 1 of the present invention.
Fig. 6 is a transverse cross-sectional view of the terminal of fig. 3.
Fig. 7 is a schematic view of the structure of the fixed joint of fig. 6.
Fig. 8 is a schematic view of the movable joint of fig. 6.
Figure 9 is a schematic view of the conduit of figure 4 connected to a movable structure.
Fig. 10 is a schematic structural view of the wire holder of fig. 7 or 8.
Fig. 11 is a sectional view taken along the plane a-a of fig. 10.
Fig. 12 is a partially enlarged view of a portion a of fig. 11.
Fig. 13 is a longitudinal sectional view of fig. 3.
Fig. 14 is a sectional view taken along the plane a-a of fig. 13.
The names of the parts indicated by the numerical references in the drawings are as follows: the names of the parts indicated by the numerical references in the drawings are as follows: 1-box body, 2-box cover, 3-connecting terminal fixing mechanism, 4-connecting terminal, 101-groove, 102-threaded hole, 103-water receiving groove, 104-water passing hole, 105-water receiving box, 106-U-shaped clamping groove, 107-first long groove, 108-rubber strip, 201-raised line, 202-bolt, 203-second long groove, 301-fixing plate, 302-telescopic connecting seat, 303-guide rod, 304-guide sleeve, 305-guide groove, 306-compression spring, 307-U-shaped accommodating groove, 308-limiting plate, 309-limiting spring, 310-limiting block, 401-fixing seat, 402-fixing joint, 403-movable joint, 404-first lead wire insertion hole, 405-joint insertion hole, 406-first metal piece, 407-cylindrical body, 408-first annular bulge, 409-second annular bulge, 410-annular clamping groove, 411-annular groove, 412-transverse spring, 413-plastic shell, 414-second metal piece, annular clamping groove, and transverse spring, 415-a second wire insertion hole, 416-a cylindrical body, 417-an annular fixture block, 418-a guide surface, 419-a ball groove, 420-a ball, 421-an annular rotating plate, 422-a wire limiting member, 423-a connecting part, 424-a limiting part, 425-a wire passing hole, 426-a wire clamping section, 427-a limiting section, 428-a push rod, 429-an arc limiting piece, 430-a long strip groove, 431-a transverse rod, 432-a longitudinal rod, 433-a first elastic limiting piece, 434-a second elastic limiting piece, 501-a slot, 502-a wire inlet hole, 503-a plug plate, 504-a cable interface, 505-a limiting screw hole, 506-a wire dividing disc plate, 507-a wire dividing hole and 508-a wire guide.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
An electrical junction box, as shown in fig. 1, 2 and 5, includes a box body 1 and a box cover 2, wherein a wide-top and narrow-bottom groove 101 is formed on the upper end surface of the box body 1 and on both sides of the box body 1 in the width direction, the longitudinal section of the groove 101 is in a right trapezoid shape, the side surface close to the center of the box body 1 is a right-angle surface, the side surface far away from the center of the box body 1 is an inclined surface, and the inclined surface and the bottom surface of the groove 101 form an included angle of 100 and 140 degrees, which is 105 degrees in this; the lower end face of the box cover 2 is provided with a convex strip 201 which is in interference fit with the groove 101 on the box body 1, the bottom face of the groove 101 is provided with a threaded hole 102 which is connected with the box cover 2 through a bolt 202, during connection, the convex strip 201 on the box cover 2 is firstly clamped into the groove 101 on the box body 1, and then the box body 1 and the box cover 2 are mutually fastened through connection of the bolt 202.
The connected face of box body 1 and lid 2 in this embodiment is connected by current plane and is designed into the connected mode of recess 101 and sand grip 201, can make the quick accurate positioning of both for be connected between box body 1 and the lid 2 is more high-efficient. And design into right trapezoid shape with recess 101 and sand grip 201, and make right trapezoid's right angle face be for being close to 1 central medial surface of box body, the lateral surface of inclined plane for keeping away from 1 central side of box body, thereby make lid 2 and 1 lid of box body close the back, the rainwater is then can flow into on the recess 101 bottom surface along the inclined plane if being permeated into gap department of lid 2 and box body 1, because recess 101 another side is the right angle face, consequently, the rainwater that permeates into in the recess 101 can't flow to recess 101 top surface by recess 101 bottom surface, block promptly that the rainwater continues to flow into inside the box body 1. On the other hand, the front end surface of the box body 1 is provided with a water receiving tank 103 which extends along the length direction of the groove 101 and is positioned right below the groove 101, the bottom surface of the groove 101 is provided with a plurality of water passing holes 104 which are uniformly arranged and are communicated with the water receiving tank 103, the bottom surface of the water receiving tank 103 is an inclined plane with a higher inner part and a lower outer part, the water outlet of the water receiving tank 103 on the front end surface of the box body 1 is provided with a water receiving box 105, so that rainwater in the groove 101 cannot accumulate, but flows into the water receiving tank 103 below the groove 101 through the water passing holes 104 on the bottom surface of the groove 101, the bottom surface of the water receiving tank 103 is an inclined plane with a higher inner part and a lower outer part, so that water in the water receiving tank 103 flows towards the water outlet of the water receiving tank 103 and finally enters the water receiving box 105, the water outlet of the water receiving box body 1 which is provided with an L-shaped longitudinal section is clamped in the U-shaped clamping groove 106, therefore, the operator only needs to extract the water receiving box 105 from the U-shaped clamping groove 106 to pour out the water in the water receiving box 105, and the rainwater can be effectively prevented from permeating into the box body 1 from the connecting gap between the box body 1 and the box cover 2 by the above design of the box body 1 and the box cover 2, so that the junction box can achieve high-efficiency waterproof performance.
In this embodiment, a first long groove 107 parallel to the groove 101 is disposed on the upper end surface of the box body 1 and on one side of the groove 101 close to the center of the box body 1, a second long groove 203 corresponding to the first long groove 107 on the box body 1 is disposed on the box cover 2, a rubber strip 108 is disposed between the first long groove 107 and the second long groove 203, and the upper and lower portions of the rubber strip 108 are respectively clamped into the second long groove 203 and the first long groove 107. Through being equipped with rubber strip 108 on the face of being connected of box body 1 and lid 2 and being located recess 101 the side that is close to box body 1 center, can further improve the waterproof performance of box body 1 and lid 2 joint gap department for no matter how much the rainfall infiltration, inside can guaranteeing that the rainwater can not get into box body 1 all, can play the limiting displacement each other further between box body 1 and lid 2 simultaneously, guarantee that can accurately align between box body 1 and the lid 2.
In addition, as shown in fig. 13 and 14, in this embodiment, a terminal fixing mechanism 3 is disposed inside the box body 1 and on the bottom surface of the box body 1, the terminal fixing mechanism 3 includes a fixing plate 301, the fixing plate 301 is fixed on the bottom surface of the box body 1 through a telescopic connection seat 302, the telescopic connection seat 302 includes a guide rod 303 fixed on the lower surface of the fixing plate 301 and a guide sleeve 304 fixed on the bottom surface of the box body 1, a guide groove 305 for the guide rod 303 to be inserted is formed in the middle of the guide sleeve 304, a compression spring 306 is disposed between the guide rod 303 and the guide sleeve 304 and sleeved on the guide rod 303, the top of the compression spring 306 abuts against the lower surface of. Wherein, all be equipped with the U-shaped groove 307 of holding of opening towards box body 1 side on the side about fixed plate 301, be equipped with the limiting plate 308 that can retract the U-shaped groove 307 completely in the U-shaped groove 307 of holding, limiting plate 308 connects on the bottom surface of U-shaped groove 307 through the spacing spring 309 of many transversal arrangement, box body 1 is inside just to be located and be fixed with and can restrict limiting plate 308 stopper 310 of up-and-down motion on the side about box body 1.
The binding post 4 in this embodiment is not the snap-on the bottom surface of box body 1, but fix in box body 1 through binding post fixed establishment 3, binding post fixed establishment 3 is the device that can go up and down, when it uses, pass through the screw fixation with binding post 4 on fixed plate 301, in-process on fixed plate 301 is fixed to binding post 4, fixed plate 301 is in the highest state that rises under the spring action in flexible connecting seat 302, this kind of state can make fixed plate 301 stretch out box body 1 as far as, reduce the operation limitation because of the less bringing of box body 1 inner space.
Binding post 4 is fixed the back, promote binding post 4 downwards, make flexible connecting seat 302 remove downwards, until fixed plate 301 removes stopper 310 department, fixed plate 301 this moment is because stopper 310 and the mutual limiting displacement of limiting plate 308, can't continue to move downwards, operating personnel need compress tightly limiting plate 308 to the inboard, make limiting plate 308 overcome in limiting spring 309's the elasticity withdrawal fixed plate 301, can continue to move down fixed plate 301 this moment, until fixed plate 301 is moved to stopper 310 below, loosen limiting plate 308, make limiting plate 308 stretch out fixed plate 301 side under limiting spring 309's effect, can be spacing each other with limiting plate 310 again this moment, make whole flexible connecting seat 302 unable to shift up, accomplish binding post 4 at the inside whole assembly of box body 1. In a similar way, when wiring is needed, the wiring terminal 4 can be in the highest state, wiring inconvenience caused by limitation of the internal space of the box body 1 is reduced, the processes of quick and efficient wiring and disassembling are achieved, and the disassembling and wiring efficiency is effectively improved.
As shown in fig. 3 and fig. 6 to 8, in the present embodiment, the connection terminal 4 is fixed in the box body 1, the connection terminal 4 includes a fixing base 401 which is rectangular and is a plastic member, and further includes a plurality of fixed contacts 402 which are arranged in the fixing base 401 and are uniformly arranged along the length direction of the fixing base 401, and movable contacts 403 which are inserted into the fixed contacts 402, two ends of each fixed contact 402 respectively form a first wire insertion hole 404 and a contact insertion hole 405 for inserting the movable contacts 403, and the first wire insertion hole 404 and the contact insertion hole 405 are respectively arranged on two side surfaces of the fixing base 401 along the length direction;
the fixed joint 402 comprises a first metal piece 406 fixed in the fixed seat 401, the first metal piece 406 comprises a cylindrical body 407 and a first annular bulge 408 and a second annular bulge 409 which are arranged on the inner surface of the cylindrical body 407 and are parallel to each other along the axial direction of the cylindrical body 407, an annular clamping groove 410 is formed between the first annular bulge 408 and the second annular bulge 409, a first lead wire insertion hole 404 is formed at the end part of the cylindrical body 407 close to the first annular bulge 408, and a joint insertion hole 405 is formed at the end part close to the second annular bulge 409; an annular groove 411 is arranged at the position of the inner surface of the cylindrical body 407 where the second annular bulge 409 is installed, a plurality of uniformly arranged transverse springs 412 are fixed in the annular groove 411 along the depth direction of the annular groove 411 in the length direction, and the second annular bulge 409 is fixed on the bottom surface of the annular groove 411 through the transverse springs 412 and can be completely retracted into the annular groove 411;
the movable joint 403 includes a cylindrical plastic housing 413, one end of the plastic housing 413 is fixed with a second metal piece 414, one end of the second metal piece 414 is inserted into the plastic housing 413, and the other end of the plastic housing 413 forms a second wire insertion hole 415; the second metal piece 414 comprises a cylindrical body 416 with one end inserted into the plastic housing 413 and an annular clamping block 417 fixed on the outer side wall of the protruding end of the cylindrical body 416 and capable of being clamped into the annular clamping groove 410, wherein two annular inner side walls of the annular clamping groove 410 are in contact with two annular outer side walls of the annular clamping block 417, and the annular clamping block 417 is capable of rotating in the annular clamping groove 410; the second annular projection 409 is an annular body having a gradually decreasing thickness from an outer surface connected to the lateral spring 412 to an inner surface thereof, and has an isosceles trapezoidal cross section in the axial direction, and both side surfaces of the second annular projection 409 are configured as guide surfaces 418 for guiding the annular latch 417.
A plurality of ball grooves 419 are uniformly arranged on the bottom surface of the annular clamping groove 410, a ball 420 capable of freely rotating is arranged in each ball groove 419, an annular rotating plate 421 is further arranged in the annular clamping groove 410, and the outer surface of the annular clamping block 417 abuts against the inner side surface of the annular rotating plate 421.
When connecting the wires, the wires are inserted into the terminal box from the cable interface 504 of the terminal box, the wires located at the first wire insertion hole 404 side are directly inserted into the first wire insertion hole 404 for connection, the wires located at the connector insertion hole 405 side are inserted into the second wire insertion hole 415 of the movable connector 403 for connection, then the movable connector 403 with the wires inserted is inserted into the cylindrical body 407, with the insertion of the movable connector 403, the annular latch 417 applies force to the guide surface 418 of the second annular protrusion 409, so that the second annular protrusion 409 retracts into the inner wall of the cylindrical body 407 against the elastic force of the transverse spring 412, at this time, the second connector can continue to move along the insertion direction until the annular latch 417 completely enters the position of the annular latch groove 410, at this time, the annular latch 417 disengages from the second annular protrusion 409, the second annular protrusion 409 returns to the original position under the action of the transverse spring 412, construct into the spacing ring groove 410 of annular fixture block 417 just with first annular arch 408 jointly, the lateral surface of annular fixture block 417 this moment, upper surface and lower surface respectively with ring groove 410's bottom surface, the contact of side and downside, ring groove 410 and ring fixture block 417 are the metalwork, thereby realize fixed joint 402 and movable joint 403's electric connection, simultaneously because both are the contact connection only, and complete chucking, consequently fixed joint 402 and movable joint 403 can rotate relatively under the exogenic action, thereby can adjust the wire through rotatory mode after the wire inserts, avoid the wire to twist reverse the damage because of inserting improperly, increase of service life.
When the wires need to be separated, the movable joint 403 is directly pulled out of the fixed joint 402, and in the pulling-out process, the annular fixture block 417 applies force to the guide surface 418 on the other side of the second annular protrusion 409, so that the second annular protrusion 409 is retracted into the inner wall of the cylindrical body 407 against the elastic force of the transverse spring 412, at this time, the movable joint 403 can continue to move in the pulling-out direction until the annular fixture block 417 is completely separated from the annular fixture groove 410, at this time, the annular fixture block 417 is separated from the second annular protrusion 409, the second annular protrusion 409 is restored to the original position under the action of the transverse spring 412, the limit on the annular fixture block 417 is released, and the movable joint 403 is pulled out. The connecting terminal 4 is connected with the movable connector 403 through the fixed connector 402 in a plug-in manner, the connection and the disassembly between the fixed connector 402 and the movable connector 403 are very convenient, the connection and the disassembly of two sections of wires can be efficiently and quickly realized, the use is flexible and convenient, the limiting is realized through the annular clamping groove 410, the stability is high, and the connecting device can be suitable for the connection of the wires in different occasions.
As shown in fig. 10-12, in this embodiment, the inner surfaces of the first wire insertion hole 404 and the second wire insertion hole 415 are threadedly connected with a wire stopper 422, the wire stopper 422 includes a connection portion 423 and a stopper portion 424, the connection portion 423 is cylindrical and has an external thread on an outer sidewall, the middle portion of the connection portion 423 is provided with a long-strip-shaped wire passing hole 425, the wire passing hole 425 includes a wire clamping section 426 having a semicircular cross section and a stopper section 427 having a rectangular cross section, the stopper portion 424 includes an L-shaped push rod 428 and an arc stopper 429 connected to one end of the push rod 428, the arc stopper 429 is disposed in the wire passing hole 425 and can move along the length direction of the wire passing hole 425 under the action of the push rod 428 to jointly clamp and limit the wire with the wire clamping section 426 of the wire passing hole 425, the bottom surface of the connection portion 423 is provided with a long groove 430 for the push rod 428 to, the other end of the push rod 428 extends out of the elongated slot 430.
The push rod 428 comprises a transverse rod 431 connected with an arc-shaped limiting piece 429 and a longitudinal rod 432 extending out of a long groove 430, a first elastic limiting piece 433 is arranged on the outer surface of the transverse rod 431, a second elastic limiting piece 434 matched with the first elastic limiting piece 433 is arranged on the groove wall of the long groove 430, and the longitudinal sections of the first elastic limiting piece 433 and the second elastic limiting piece 434 are triangular and can be mutually clamped.
In the process of connecting the wire with the movable joint 403 and the fixed joint 402, the wire is firstly inserted into the wire passing hole 425 in the middle of the connecting portion 423, then the position of the arc-shaped limiting piece 429 in the wire passing hole 425 is adjusted by the push rod 428, and finally the wire clamping section 426 of the wire limiting hole is matched with the arc-shaped limiting piece 429 to tightly hold the wire, and the first elastic limiting piece 433 on the push rod 428 is matched with the second elastic limiting piece 434 on the long groove 430 to fix the position of the arc-shaped limiting piece 429.
The wire is compressed in this way, the length of the wire extending out of the wire passing hole 425 is adjusted, and the first elastic limiting piece 433 and the second elastic limiting piece 434 are both made of elastic deformable materials, so that the first elastic limiting piece 433 and the second elastic limiting piece 434 deform in the reciprocating process of the push rod 428 in the strip groove 430, and the push rod 428 can move smoothly. Because connecting portion 423 and wire insert the end between through threaded connection to can realize the position of whole wire locating part 422 in the wire inserts the end through rotating connecting portion 423, fully screw connecting portion 423 when inserting the wire, make it reach the deepest position that the wire inserted the end, guarantee that wire contact head and wire insert the bottom surface of end and contact each other, this kind of connected mode can realize the nimble regulation to the wire position, avoids wire contact failure, improves wire connection stability.
Meanwhile, the connecting mode of the wires is convenient, the wires are connected only in a pressing mode, the existing screwing is not needed, torsion and tension are not generated, the wire joint is prevented from being broken due to overlarge tension and torsion of the wire joint in the screwing process, and damage or damage to the wire joint is fully reduced.
As shown in fig. 4 and 9, in this embodiment, a front end plate and a rear end plate of the box body 1 are respectively provided with a slot 501 which is transversely arranged and has a T-shaped longitudinal section with an outward opening, a bottom surface of the slot 501 opposite to the opening is provided with a plurality of wire inlet holes 502 transversely arranged, the slot 501 is internally provided with an insert plate 503 which can transversely and linearly reciprocate along the slot 501, the insert plate 503 is fixed with a cable interface 504 which can be aligned with the wire inlet holes 502, bottom surfaces of the insert plate 503 and the slot 501 are respectively provided with a limit screw hole 505, and when the limit screw hole 505 on the insert plate 503 corresponds to different limit screw holes 505 on the bottom surface of the slot 501, the cable interface 504 corresponds to different wire inlet holes 502. In this embodiment, two groups of wire inlet holes 502 are formed in the bottom surface of the slot 501, two wire inlet holes 502 are formed in each group, two cable interfaces 504 corresponding to a single group of wire inlet holes 502 are fixed on the inserting plate 503, the position of the inserting plate 503 in the slot 501 can be adjusted, the cable interfaces 504 on the inserting plate 503 correspond to different groups of wire inlet holes 502, and the inserting plate is limited and fixed by limiting screws. The position of the cable interface 504 on the junction box can be adjusted through the mode, the wire can not be limited by the position of the cable interface 504 when being connected into the junction box, different interfaces on the wiring terminal 4 can be flexibly selected through the wire, meanwhile, due to the adjustability of the position of the cable interface 504, the wires in the box body 1 can be reasonably arranged according to the actual position when being connected into the wire, and the wiring efficiency is improved.
A branching disc plate 506 is fixed in the wire inlet hole 502, a plurality of branching holes 507 are arranged on the branching disc plate 506, eight branching holes 507 are arranged on the branching disc plate 506 in the embodiment, a conduit 508 is fixed on the branching disc plate 506 and corresponding to each branching hole 507, one end of the conduit 508 is fixed on the branching disc plate 506, the other end of the conduit extends into the box body 1, and the movable joint 403 can be inserted into the end of the conduit 508 extending into the box body 1 through the second conduit insertion hole 415. With wire inlet hole 502 inside set up a plurality of wire conduits 508 for when stranded wire connects, can insert wire conduit 508 respectively with every strand of wire through separated time disc board 506 in wiring mouthful department, realize separated time in advance, avoid stranded wire in the terminal box position in disorder and the wiring error that leads to, also can rationally arrange the wire through the pipe simultaneously, effectively improve wiring efficiency. In addition, the movable joint 403 is inserted into the conduit when not in use, so that the movable joint 403 is detachably arranged inside the junction box, the movable joint 403 is prevented from being lost, when in use, the movable joint 403 is pulled out, then the wires are connected with the movable joint 403, and finally the wires at two sides of the junction box can be connected by directly inserting the wires into the fixed joint 402.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims (6)

1. Electric terminal box, including box body (1) and lid (2), its characterized in that: the upper end surface of the box body (1) and two sides along the width direction of the box body (1) are provided with grooves (101) which are wide at the top and narrow at the bottom, the longitudinal section of each groove (101) is in a right trapezoid shape, the side surface close to the center of the box body (1) is a right-angle surface, the side surface far away from the center of the box body (1) is an inclined surface, and the inclined surface and the bottom of each groove (101) form an included angle of 100 degrees and 140 degrees; the lower end face of the box cover (2) is provided with a convex strip (201) which is in interference fit with a groove (101) on the box body (1), the bottom face of the groove (101) is provided with a threaded hole (102) which is connected with the box cover (2) through a bolt (201), the front end face of the box body (1) is provided with a water receiving groove (103) which extends along the length direction of the groove (101) and is positioned right below the groove (101), the bottom face of the groove (101) is provided with a plurality of water passing holes (104) which are uniformly distributed and communicated with the water receiving groove (103), and the bottom face of the water receiving groove (103) is an inclined plane;
a first long groove (107) parallel to the groove (101) is formed in the upper end face of the box body (1) and located on one side, close to the center of the box body (1), of the groove (101), a second long groove (203) corresponding to the first long groove (107) in the box body (1) is formed in the box cover (2), a rubber strip is arranged between the first long groove (107) and the second long groove (203), and the upper portion and the lower portion of the rubber strip are clamped into the second long groove (203) and the first long groove (107) respectively;
the wiring terminal fixing mechanism (3) is arranged in the box body (1) and located on the bottom surface of the box body (1), the wiring terminal fixing mechanism (3) comprises a fixing plate (301), the fixing plate (301) is fixed on the bottom surface of the box body (1) through a telescopic connecting seat (302), the telescopic connecting seat (302) comprises a guide rod (303) fixed on the lower surface of the fixing plate (301) and a guide sleeve (304) fixed on the bottom surface of the box body (1), a guide groove (305) for the guide rod (303) to be inserted is formed in the middle of the guide sleeve (304), a compression spring (306) is arranged between the guide rod (303) and the guide sleeve (304) and sleeved on the guide rod (303), the top of the compression spring (306) is abutted against the lower surface of the fixing plate (301); the left side and the right side of the fixed plate (301) are respectively provided with a U-shaped containing groove (307) with an opening facing the side of the box body (1), a limiting plate (308) capable of completely retracting into the U-shaped containing groove (307) is arranged in the U-shaped containing groove (307), the limiting plate (308) is connected to the bottom surface of the U-shaped containing groove (307) through a plurality of transversely arranged limiting springs (309), and limiting blocks (310) capable of limiting the limiting plate (308) to move up and down are fixed in the box body (1) and positioned on the left side and the right side of the box body (1); the wiring terminal (4) is fixed in the box body (1), the wiring terminal (4) comprises a rectangular fixing seat (401) which is a plastic part, a plurality of fixed joints (402) which are uniformly arranged in the length direction of the fixing seat (401) and are arranged in the fixing seat (401), and movable joints (403) which are inserted in the fixed joints (402), wherein first lead inserting holes (404) and joint inserting holes (405) which are used for inserting the movable joints (403) are formed in two ends of each fixed joint (402), and the first lead inserting holes (404) and the joint inserting holes (405) are respectively arranged on two side faces of the fixing seat (401) in the length direction;
the fixed joint (402) comprises a first metal piece (406) fixed in the fixed seat (401), the first metal piece (406) comprises a cylindrical body (407) and a first annular bulge (408) and a second annular bulge (409) which are arranged on the inner surface of the cylindrical body (407) and are parallel to each other along the axial direction of the cylindrical body (407), an annular clamping groove (410) is formed between the first annular bulge (408) and the second annular bulge (409), a first lead wire insertion hole (404) is formed at the end part, close to the first annular bulge (408), of the cylindrical body (407), and a joint insertion hole (405) is formed at the end part, close to the second annular bulge (409); an annular groove (411) is formed in the position, on the inner surface of the cylindrical body (407), where the second annular bulge (409) is installed, a plurality of uniformly arranged transverse springs (412) are fixed in the annular groove (411) along the depth direction of the annular groove (411) in the length direction, and the second annular bulge (409) is fixed on the bottom surface of the annular groove (411) through the transverse springs (412) and can be completely retracted into the annular groove (411);
the movable joint (403) comprises a cylindrical plastic shell (413), one end of the plastic shell (413) is fixed with a second metal piece (414), one end of the second metal piece (414) is inserted into the plastic shell (413), and the other end of the plastic shell (413) is provided with a second lead insertion hole (415); the second metal piece (414) comprises a cylindrical body (416) with one end inserted into the plastic shell (413) and an annular clamping block (417) fixed on the outer side wall of the extending end of the cylindrical body (416) and capable of being clamped into the annular clamping groove (410), two annular inner side walls of the annular clamping groove (410) are in contact with two annular outer side walls of the annular clamping block (417), and the annular clamping block (417) can rotate in the annular clamping groove (410); the second annular projection (409) is an annular body with a gradually reduced thickness from the outer surface connected with the transverse spring (412) to the inner surface, and the section of the second annular projection (409) along the axial direction is in an isosceles trapezoid shape, and two side surfaces of the second annular projection (409) are configured to be guide surfaces (418) for guiding the annular clamping block (417).
2. The electrical junction box of claim 1, wherein: a water receiving box (105) is arranged on the front end surface of the box body (1) and is positioned at the water outlet of the water receiving tank (103).
3. The electrical junction box of claim 2, wherein: a U-shaped clamping groove (106) is formed in the front end face of the box body (1) and is positioned at the water outlet of the water receiving groove (103), and the water receiving box (105) is a box body (1) with an L-shaped longitudinal section and is clamped in the U-shaped clamping groove (106).
4. The electrical junction box of claim 1, wherein: the bottom surface of the annular clamping groove (410) is provided with a plurality of ball grooves (419) which are uniformly arranged, each ball groove (419) is internally provided with a ball (420) capable of freely rotating, an annular rotating plate (421) is also arranged in the annular clamping groove (410), and the outer surface of the annular clamping block (417) abuts against the inner side surface of the annular rotating plate (421).
5. The electrical junction box of claim 1, wherein: the inner surfaces of the first lead inserting hole (404) and the second lead inserting hole (415) are in threaded connection with a lead limiting piece (422), the lead limiting piece (422) comprises a connecting part (423) and a limiting part (424), the connecting part (423) is cylindrical, external threads are arranged on the outer side wall of the connecting part, a strip-shaped lead wire passing hole (425) is formed in the middle of the connecting part (423), the lead wire passing hole (425) comprises a wire clamping section (426) with a semicircular cross section and a limiting section (427) with a rectangular cross section, the limiting part (424) comprises an L-shaped push rod (428) and an arc limiting piece (429) connected to one end of the push rod (428), the arc limiting piece (429) is arranged in the lead wire passing hole (425) and can move along the length direction of the lead wire passing hole (425) under the action of the push rod (428) to jointly realize tight limiting of the lead wire with the wire clamping section (426, the bottom surface of the connecting part (423) is provided with a long groove (430) for the push rod (428) to move along the length direction of the wire passing hole (425), and the other end part of the push rod (428) extends out of the long groove (430).
6. The electrical junction box of claim 5, wherein: push rod (428) include horizontal pole (431) be connected with spacing piece of arc (429) and stretch out longitudinal rod (432) of rectangular groove (430), establish first elasticity spacing piece (433) on the surface of horizontal pole (431), be equipped with on the cell wall of rectangular groove (430) with spacing piece (433) complex second elasticity spacing piece (434) of first elasticity, the longitudinal section of spacing piece of first elasticity (433) and second elasticity spacing piece (434) all is triangle-shaped and both can block each other.
CN201810522876.0A 2018-05-28 2018-05-28 Electrical junction box Active CN108631238B (en)

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CN111541201A (en) * 2020-05-21 2020-08-14 大连赢得科技有限公司 Channel steel with cable protection function for electromechanical equipment wiring tool

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CN104158110B (en) * 2014-07-25 2017-02-08 国网河南镇平县供电公司 Protection device and protection method for cable sheath in power construction process
CN104105375A (en) * 2014-07-25 2014-10-15 绵阳彬华科技有限公司 Waterproof type machine control case
CN106711637A (en) * 2016-05-02 2017-05-24 胡小青 Novel wedge-shaped power line clamp
CN205921107U (en) * 2016-07-31 2017-02-01 云南电网有限责任公司丽江供电局 Electric line earth connection wire end hawk hook -type chuck
CN207009988U (en) * 2017-06-22 2018-02-13 黄胜和 A kind of box for low voltage electric appliances
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