CN212304584U

CN212304584U - Terminal box

Info

Publication number: CN212304584U
Application number: CN202020782558.0U
Authority: CN
Inventors: 李堂光; 魏彬; 朱奕光; 梁志谦; 吴利平
Original assignee: Foshan Electrical and Lighting Co Ltd
Current assignee: Foshan Haolaite Photoelectric Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-01-05
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a junction box, include: a housing; the wiring hole penetrates through the side wall of the shell and comprises a concave cavity, the concave cavity is arranged on the inner side wall of the shell and is conical, and the cross section area of the concave cavity is gradually reduced from the inner side wall of the shell to the outside; the sleeve, during telescopic front end inserted the cavity, the sleeve includes the joint piece, and the joint piece sets up in telescopic front end, the front of joint piece towards telescopic axis, and the back of joint piece offsets with the inside wall of cavity, and the joint piece includes the lug, and the lug sets up on the front of joint piece, and the joint piece has a plurality ofly, and all joint pieces arrange the distribution in proper order along telescopic circumference, leave the space between per two adjacent joint pieces. The utility model discloses a terminal box for the electric wire is difficult to toward pulling outward, thereby improves the terminal box to the ability of pulling of preventing of electric wire, connects the position pine and takes off when avoiding the electric wire to pull outward. The utility model discloses can be applied to among the conductive connection device.

Description

Terminal box

Technical Field

The utility model relates to a conductive connection device field, in particular to terminal box.

Background

In an electric circuit, when different electric wires need to be connected with each other, the joint parts of the electric wires are protected by the junction box, and the joint parts of the electric wires in the junction box are connected in a mutual winding mode and the like. However, the conventional junction box has poor anti-pulling capability on the electric wire, and the joint part is easy to loosen when the electric wire is pulled outwards.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a terminal box to solve one or more technical problems in the prior art, and at least provide a useful choice or creation condition.

The technical scheme adopted for solving the technical problems is as follows:

a junction box, comprising:

a housing;

the wiring hole penetrates through the side wall of the shell and comprises a concave cavity, the concave cavity is arranged on the inner side wall of the shell and is conical, and the cross section area of the concave cavity is gradually reduced from the inner side wall of the shell outwards;

the sleeve, telescopic front end inserts in the cavity, the sleeve includes the joint piece, the joint piece set up in telescopic front end, the front orientation of joint piece the telescopic axis, the back of joint piece with the inside wall of cavity offsets, the joint piece includes the lug, the lug set up in on the front of joint piece, the joint piece has a plurality ofly, all the joint piece is followed telescopic circumference is arranged in proper order and is distributed, leaves the space between per two adjacent joint pieces.

The utility model has the advantages that: the joint part of the electric wire extends into the shell from the wiring hole, the sleeve is sleeved on the electric wire and inserted into the concave cavity, the back surface of the clamping block of the sleeve is abutted against the concave cavity, the shape of the concave cavity is conical, because a gap is left between every two adjacent clamping blocks, all the clamping blocks deflect and deform towards the axis of the sleeve along with the narrowing of the inner side wall of the concave cavity, the convex blocks on the front sides of the clamping blocks are pressed into the outer insulating layer of the electric wire, the clamping block clamps the electric wire, when the electric wire is pulled outwards, the electric wire drives the sleeve to continuously move towards the bottom of the concave cavity, because the inner side wall of the concave cavity is gradually narrowed, the deflection deformation angle of all the clamping blocks towards the inner part of the electric wire is increased, and the convex blocks on the front side of the clamping blocks are pressed into the outer insulating layer of the electric wire more deeply, the electric wire is more difficult to pull outwards, thereby improving the anti-pulling capacity of the junction box to the electric wire and avoiding the joint part from loosening when the electric wire is pulled outwards.

As a further improvement of the technical scheme, the sealing device further comprises a sealing ring, the sealing ring is arranged in the cavity, and the front end of the clamping block is abutted to the sealing ring.

The sealing washer sets up in the cavity, the cover barrel cup joints on the electric wire, the front end and the sealing washer of joint piece offset, the joint piece is impressed the sealing washer gap department between electric wire and the cavity for the outside foreign matter of sealing washer separation gets into in the casing, thereby improve the waterproof ability of terminal box, in addition, because the sealing washer is extruded gap department between electric wire and cavity, make the frictional force between electric wire and the cavity increase, improve the ability of pulling of preventing of terminal box, the joint position pine takes off when avoiding the outside pulling of electric wire.

As a further improvement of the above technical solution, the cross-sectional shape of the bump is a triangle.

The cross-sectional shape of lug is triangle-shaped, and when the lug impressed the external insulation layer of electric wire, the most advanced embedding of lug increased the frictional force between lug and the electric wire for the electric wire is bitten tightly by a plurality of lugs, thereby improves the ability of preventing dragging of terminal box, and the joint position pine takes off when avoiding the electric wire to outwards drag.

As a further improvement of the above technical solution, the sleeve further includes a buckle, the buckle is disposed on an outer side wall of the sleeve, the housing further includes a slot, the slot is disposed on an inner wall of the housing, a position of the slot corresponds to a position of the buckle, and the buckle is clamped in the slot.

Set up the buckle on the telescopic lateral wall, set up the draw-in groove on shells inner wall's the corresponding position, the buckle joint is on the draw-in groove, make the sleeve can be fixed by the draw-in groove, sleeve cup joints on the electric wire, when the electric wire promotes in to the casing, the sleeve is fixed by the draw-in groove, the sleeve can not break away from in the cavity, improve the ability that the electric wire push-and-pull is resisted to the terminal box, furthermore, telescopic front end is prevented outwards to remove by the cavity, the draw-in groove restricts the sleeve again and removes in to the casing, when the terminal box outside rocks or vibrates, telescopic rigidity, make the electric wire by firm clamp tightly, thereby.

As a further improvement of the technical scheme, the number of the wiring holes is multiple, and the number of the sleeves is matched with that of the wiring holes.

A plurality of wiring holes can be formed in the junction box, so that connection of more wires is achieved, and the adaptability of the junction box is improved.

As a further improvement of the above technical solution, the housing includes an upper cover, a lower cover, a sealing strip, and a groove, the upper cover is detachably connected to the lower cover, the groove is disposed on the bonding surface of the lower cover and the upper cover, the sealing strip is disposed in the groove, and the shape of the sealing strip corresponds to the shape of the groove.

The casing can be dismantled sealing connection by upper cover and lower cover and form, and the laminating department of upper cover and lower cover sets up the sealing strip for convenient maintenance can be dismantled to the casing, and sealing performance is higher.

As a further improvement of the above technical solution, the wiring hole is disposed on the side wall of the lower cover, the housing further includes a stopper disposed on the inner wall of the upper cover, and the stopper abuts against the rear end of the sleeve.

The wiring hole sets up on the lower cover, set up the dog on the inner wall of upper cover, the upper cover is connected the back with the lower cover, the dog supports with telescopic rear end, the cover barrel cup joints on the electric wire, when promoting the electric wire to casing inside, the dog prevents the sleeve inwards movement, thereby make the sleeve can not break away from the cavity, improve the ability that the electric wire push-and-pull was resisted to the terminal box, telescopic front end is prevented outwards by the cavity and is removed, the dog restriction sleeve removes in to the casing, when the terminal box outside rocks or vibrates, telescopic rigidity, make the electric wire by firm clamp, thereby improve the push-and-pull ability of preventing of terminal box.

As a further improvement of the above technical solution, the lower cover includes a mounting hole, the mounting hole is disposed at an edge of a bottom surface of the lower cover, the mounting hole penetrates through the lower cover, the upper cover includes a threaded hole, a position of the threaded hole corresponds to a position of the mounting hole, the lower cover and the upper cover are connected together by a screw, the groove includes an annular groove, a position of the annular groove corresponds to a position of the mounting hole, and the annular groove surrounds a periphery of the mounting hole.

The lower cover is connected with the upper cover through the screw, the groove further comprises an annular groove, the position of the annular groove corresponds to the position of the mounting hole of the lower cover, the mounting hole is surrounded by the annular groove, the shape of the sealing strip corresponds to that of the groove, when the upper cover is connected with the lower cover through the screw, a gap between the mounting hole and the threaded hole is sealed through the sealing strip, external liquid is prevented from flowing into the shell through the threaded hole or the mounting hole, and the sealing performance of the junction box is improved.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is an assembly view of one embodiment of a junction box provided by the present invention;

FIG. 2 is an elevational view, in cross section, of one embodiment of a junction box provided in the present invention;

fig. 3 is a front sectional view of an embodiment of the junction box according to the present invention, wherein the junction box is not connected with an electric wire;

fig. 4 is a top sectional view of an embodiment of the junction box provided by the present invention.

100. The sealing device comprises a shell, 101, an upper cover, 102, a lower cover, 110, a groove, 111, an annular groove, 120, a clamping groove, 130, a sealing strip, 140, a stop block, 150, a mounting hole, 160, a threaded hole, 200, a wiring hole, 210, a cavity, 300, a sleeve, 310, a clamping block, 311, a bump, 320, a buckle, 400, a sealing ring, 500, a screw, 600 and an electric wire.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, the junction box of the present invention makes the following embodiments:

the junction box comprises a shell 100, the shell 100 is a hollow thin-wall structure, the shell 100 is formed by combining an upper cover 101 and a lower cover 102, the bottom surface edge of the lower cover 102 is provided with mounting holes 150, the mounting holes 150 penetrate through the lower cover 102 from bottom to top, the upper cover 101 is provided with threaded holes 160 at positions corresponding to the mounting holes 150, the threaded holes 160 are arranged on a joint surface of the upper cover 101 and the lower cover 102, the threaded holes 160 are blind holes, the six mounting holes 150 are uniformly distributed at the edge of the lower cover 102, the number of the threaded holes 160 is six, screws 500 pass through the mounting holes 150 and are connected with the threaded holes 160, the lower cover 102 and the upper cover 101 are detachably connected through screws 500, a groove 110 is arranged on a joint surface of the lower cover 102 and the upper cover 101, the groove 110 can be arranged on the lower cover 102 or the upper cover 101, in the embodiment, two grooves 110 are arranged on the lower cover 102 and the upper cover 101 respectively, and the groove 110 surrounds the joint surface of the upper cover 101 and the lower cover, the groove 110 encloses the inner cavity of the casing 100, the groove 110 further comprises an annular groove 111, the position of the annular groove 111 corresponds to the position of the mounting hole 150, the annular groove 111 surrounds the periphery of the mounting hole 150 by a circle, a sealing strip 130 is arranged in the groove 110, the shape of the sealing strip 130 corresponds to that of the groove 110, a sealing ring is arranged at the position of the sealing strip 130 corresponding to the mounting hole 150, the shape of the sealing ring corresponds to that of the annular groove 111, when the upper cover 101 is detachably connected with the lower cover 102, the bottom surface of the groove 110 on the upper cover 101 abuts against the top surface of the sealing strip 130, the top surface of the groove 110 on the lower cover 102 abuts against the bottom surface of the sealing strip 130, and sealing between the upper cover 101 and the lower cover 102 is achieved.

The side wall of the housing 100 is provided with a wiring hole 200, the wiring hole 200 can be arranged on the lower cover 102 or the upper cover 101, in the embodiment, the wiring hole 200 is arranged on the side wall of the lower cover 102, the wiring hole 200 penetrates through the side wall of the lower cover 102, a cavity 210 is arranged on a port of the wiring hole 200 close to the inner side wall of the lower cover 102, the opening of the cavity 210 faces the inside of the housing 100, the bottom surface of the cavity 210 is communicated with the wiring hole 200, the shape of the cavity 210 is conical, and the cross-sectional area of the cavity 210 is gradually reduced from the inner side wall of the lower cover 102 outwards.

The junction box further comprises a sleeve 300, the sleeve 300 is of a cylindrical structure, the front end port of the sleeve 300 faces the cavity 210, the front end of the sleeve 300 is provided with a clamping block 310, the clamping block 310 extends forwards along the axis of the sleeve 300, the front face of the clamping block 310 faces the axis of the sleeve 300, the front end of the front face of the clamping block 310 is provided with a convex block 311, the convex block 311 protrudes towards the axis of the sleeve 300, the cross section of the convex block 311 is triangular, the front end port of the sleeve 300 is provided with a plurality of clamping blocks 310, all the clamping blocks 310 are uniformly distributed along the front end port of the sleeve 300, the front end port of the sleeve 300 is surrounded in a circle by all the clamping blocks 310, a gap is reserved between every two adjacent clamping blocks 310, the large port with the larger diameter of the cavity 210 faces the sleeve 300, the small port with the smaller diameter of the cavity 210 faces the outside of the lower cover 102, the diameter of the large port of the cavity 210 is smaller than the diameter, the diameter of the front end of all the clamping blocks 310 after being encircled into a circle is larger than the diameter of the small port of the cavity 210, the front end of the sleeve 300 is inserted into the cavity 210, the back surfaces of all the clamping blocks 310 are abutted against the inner side wall of the cavity 210, the cavity 210 extrudes the clamping blocks 310 towards the axis of the sleeve 300, when the sleeve 300 is sleeved on the electric wire 600, the front surfaces of the clamping blocks 310 are abutted against the outer insulating layer of the electric wire 600, along with the extrusion of the clamping blocks 310 towards the axis of the sleeve 300, the convex blocks 311 at the front ends of the clamping blocks 310 are pressed into the outer insulating layer of the electric wire 600, the convex blocks 311 of all the clamping blocks 310 are simultaneously extruded towards the electric wire 600, so that the clamping blocks 310 compress the electric wire in the cavity 210, the sealing ring 400 is arranged in the cavity 210, when the sleeve 300 is inserted into the cavity 210, the front end of the clamping block 310 at the front end of the sleeve 300 is abutted against the sealing ring 400, thereby achieving a seal between the outer insulation of the wire 600 and the cavity 210.

The outer side wall of the sleeve 300 is provided with a base, the base surrounds a circle along the outer side wall of the sleeve 300, the base protrudes out of the outer side wall of the sleeve 300, the front end surface of the base is abutted against the side wall of the outer edge of the large port of the cavity 210, the outer side wall of the sleeve 300 is further provided with a buckle 320, in the embodiment, the buckle 320 is arranged on the base, the buckle 320 extends forwards along the axis of the sleeve 300, the buckling position of the buckle 320 faces the outside of the sleeve 300, a clamping groove 120 is arranged at the corresponding position of the lower cover 102, the clamping groove 120 is formed by two vertical rods, a gap is reserved between the two vertical rods, the shape of the gap matches the shape of the catching position of the catch 320, and the gap forms the catching groove 120, and when the front end of the sleeve 300 is inserted into the cavity 210, the two buckles 320 of the sleeve 300 are clamped in the two clamping grooves 120, the two buckles 320 are respectively arranged on two sides of the sleeve 300, and the two clamping grooves 120 are correspondingly arranged. The inner top wall of the upper lid 101 is provided with a stopper 140, the stopper 140 protrudes downwards from the inner top wall of the upper lid 101, the stopper 140 is provided at the rear end of the sleeve 300, and when the upper lid 101 and the lower lid 102 are combined and connected, the stopper 140 abuts against the rear end of the sleeve 300.

In this embodiment, there are two wiring holes 200, two wiring holes 200 may be disposed on the same sidewall of the lower cover 102, and in this embodiment, two wiring holes 200 are disposed on two sidewalls of the lower cover 102, respectively, there are two sleeves 300, and two sealing rings 400 are disposed, two wires 600 are inserted into the two wiring holes 200, respectively, the two sleeves 300 are sleeved on the two wires 600, respectively, the joint portions of the two wires 600 are wound around each other, and the two sleeves 300 are inserted into the two cavities 210, respectively, so that the two wires 600 are fixed in the wiring holes 200, respectively. The junction box may also have a plurality of wiring holes 200, for example, a junction box having three wiring holes 200, and the junction box may be connected to three wires 600, and so on.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A terminal block, characterized by: the method comprises the following steps:

a housing (100);

a wiring hole (200), wherein the wiring hole (200) penetrates through the side wall of the housing (100), the wiring hole (200) comprises a cavity (210), the cavity (210) is arranged on the inner side wall of the housing (100), the cavity (210) is conical in shape, and the cross-sectional area of the cavity (210) is gradually reduced from the inner side wall of the housing (100) outwards;

sleeve (300), the front end of sleeve (300) inserts in cavity (210), sleeve (300) include joint piece (310), joint piece (310) set up in the front end of sleeve (300), the front orientation of joint piece (310) the axis of sleeve (300), the back of joint piece (310) with the inside wall of cavity (210) offsets, joint piece (310) include lug (311), lug (311) set up in on the front of joint piece (310), joint piece (310) have a plurality ofly, all joint piece (310) are followed the circumference of sleeve (300) is arranged in proper order and is distributed, and is every two adjacent leave the space between joint piece (310).

2. The junction box of claim 1, wherein: the sealing ring (400) is arranged in the cavity (210), and the front end of the clamping block (310) is abutted to the sealing ring (400).

3. The junction box of claim 1, wherein: the cross section of the lug (311) is triangular.

4. The junction box of claim 1, wherein: the sleeve (300) further comprises a buckle (320), the buckle (320) is arranged on the outer side wall of the sleeve (300), the shell (100) further comprises a clamping groove (120), the clamping groove (120) is arranged on the inner wall of the shell (100), the position of the clamping groove (120) corresponds to the position of the buckle (320), and the buckle (320) is clamped in the clamping groove (120).

5. The junction box of claim 1, wherein: the wiring holes (200) are multiple, and the number of the sleeves (300) is matched with that of the wiring holes (200).

6. The junction box of claim 1, wherein: the casing (100) comprises an upper cover (101), a lower cover (102), a sealing strip (130) and a groove (110), wherein the upper cover (101) is detachably and hermetically connected with the lower cover (102), the groove (110) is formed in the binding surface of the lower cover (102) and the upper cover (101), the sealing strip (130) is arranged in the groove (110), and the shape of the sealing strip (130) corresponds to that of the groove (110).

7. The junction box of claim 6, wherein: the wiring hole (200) is formed in the side wall of the lower cover (102), the shell (100) further comprises a stop block (140), the stop block (140) is arranged on the inner wall of the upper cover (101), and the stop block (140) abuts against the rear end of the sleeve (300).

8. The junction box of claim 6, wherein: the lower cover (102) comprises a mounting hole (150), the mounting hole (150) is arranged at the edge of the bottom surface of the lower cover (102), the mounting hole (150) penetrates through the lower cover (102), the upper cover (101) comprises a threaded hole (160) and a screw (500), the position of the threaded hole (160) corresponds to the position of the mounting hole (150), the lower cover (102) and the upper cover (101) are connected together through the screw (500), the groove (110) comprises an annular groove (111), the position of the annular groove (111) corresponds to the position of the mounting hole (150), and the annular groove (111) surrounds the periphery of the mounting hole (150).