CN203707695U

CN203707695U - Junction box

Info

Publication number: CN203707695U
Application number: CN201320775841.0U
Authority: CN
Inventors: 朱茂雅克
Original assignee: FOSHAN JPCI CONTROL MANUFACTURING Co Ltd
Current assignee: FOSHAN JPCI CONTROL MANUFACTURING Co Ltd
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-07-09
Anticipated expiration: 2023-11-29

Abstract

The utility model provides a junction box. The junction box comprises a box body and a plurality of wiring holes, the box body comprises a bottom box and a box cover, the box cover can cover the bottom box to form one body, each wiring hole is composed of a first half hole disposed in a side edge of the bottom box and a second half hole corresponding disposed in a side edge of the box cover, a waterproof structure is further disposed at a position adjacent to each wiring hole, and each waterproof structure comprises a fixing sleeve and a barrel body; each fixing sleeve is composed of a first half sleeve and a second half sleeve, edges of the first half holes of the wiring holes protrude outwardly to form the first half sleeves, edges of the second half holes of the wiring holes protrude outwardly to form the second half sleeves, and, when the box cover covers the bottom box, the first half sleeves exactly covers the second half sleeves to form the fixing sleeves; and the barrel bodies are installed in the fixing sleeves, two bottom faces of each barrel body are provided with structure for cables to penetrate the barrel body so as to enter into the box body, each barrel body is composed of a first half barrel body and a second barrel body which can exactly cover each other, and the first and second half barrel bodies are filled with silica gel. The junction box has good waterproof performance.

Description

A kind of terminal box

Technical field

The utility model relates to terminal box.

Background technology

Terminal box, as cable connection device, is one of a kind of conventional electrician's auxiliary material.Terminal box is generally made up of several parts such as end box, lid, wiring hole, binding post, diode, connecting line, connectors.Terminal box in the time of design, be considered waterproof insulation performance conventionally, avoids the electric leakage of getting an electric shock, and jeopardizes personal safety.At present, people are conventionally at terminal box lateral opening hole, and cable is fixed in terminal box body by connectors such as bolts through behind this hole.Because the operational environment complexity of terminal box is various, many times also can be in wet environment.And this existing terminal box, because its water resistance is not good, the water capacity easily penetrates in terminal box along wiring hole, thereby causes electric leakage etc., has very large potential safety hazard.Afterwards, people improve, and the wiring hole place that enters box body at cable has increased bolt and nut, and cable enters in box body after through the bolt of working in coordination and nut, and then cable is fixed in box body.Although this method water proofing property improves to some extent, but still not fully up to expectations.In actual applications, the solution such as rainwater still can enter into electrical connections along the space between bolt and cable, the larger potential safety hazard of same existence.Publication number is that the Chinese patent application of CN201830173 discloses a kind of terminal box, it comprises housing, be contained in the some conducting terminals in lower house and be located at two riveting parts in order to connection cable on lower house, lower house comprises the first side wall being parallel to each other and the second sidewall that is connected with the first side wall and is parallel to each other, between described the first side wall and the second sidewall, be arranged with the connection the first side wall of pair of angled setting and the connecting portion of the second sidewall, the first side wall, the second sidewall and connecting portion surround one jointly in order to accommodate the host cavity of conducting terminal, between riveting part and connecting portion, be that face coordinates with the vertical of face, thereby play certain waterproof effect.

Utility model content

In order to improve the deficiency of existing terminal box, the terminal box that provides a kind of water resistance better is provided the purpose of this utility model.

The technical scheme that the utility model solves its technical problem employing is as follows:

A kind of terminal box, comprise box body and some wiring holes, described box body comprises end box, lid, described lid can be integrated with end lid, each wiring hole forms by the first half holes and corresponding the second half holes of being located at lid side of being located at end box side, also there is waterproof construction in the position of adjoining described wiring hole, described waterproof construction comprises fixed cover and cylindrical shell, wherein, described fixed cover is made up of first and second half cover, first and second half cover is outwards protruded out and forms by the edge in first and second half hole of wiring hole respectively, when box lid and bottom lid closes, first and second half cover is combined to form described fixed cover, described cylindrical shell is installed in described fixed cover, and two bottom surfaces of cylindrical shell are provided with power supply cable and run through cylindrical shell to enter the structure in box body, and described cylindrical shell is made up of first and second half cylindrical shell that can be involutory, in first and second half cylindrical shell, is all filled with silicon gel.

First and second of cylindrical shell half cylindrical shell be installed on respectively fixed cover first and second partly overlap inner surface.

First and second partly overlaps inner surface and is equipped with limited impression, and first and second half barrel outer surface is provided with the spacing block set mating with the limited impression of first and second half cover respectively.

Preferably, first and second half cover and first and second half cylindrical shell are variable-diameter structure, and one end that first and second half cover adjoins wiring hole is small end, is large end away from one end of wiring hole; Match with first and second half cover, one end that first and second half cylindrical shell adjoins wiring hole is small end, is large end away from one end of wiring hole.

Preferably, the top of end box and lid is respectively equipped with collision mat ring recess, and one end that the first and second half cylindrical shells adjoin wiring hole is equipped with side opening, and described side opening can be communicated with the inner chamber of first and second half cylindrical shell with described collision mat ring recess.

As a kind of execution mode, two bottom surfaces of cylindrical shell are provided with hole, and power supply cable runs through cylindrical shell and enters in box body.

Described cylindrical shell entirety is elastic material.

Preferably, in two bottom surfaces of the first half cylindrical shells, at least its bottom surface away from wiring hole is for to be made up of multi-disc flabellum, and when excessive when being filled in the silicon gel effect of being under pressure in the first half cylindrical shells, described multi-disc flabellum can be expanded to outside; In two end faces of the second half cylindrical shells, at least its bottom surface away from wiring hole is for to be made up of multi-disc flabellum, and when excessive when being filled in the silicon gel effect of being under pressure in the second half cylindrical shells, described multi-disc flabellum can be expanded to outside.

Preferably, first and second of cylindrical shell half cylindrical shell be installed on respectively fixed cover first and second partly overlap inner surface, and first and second half cylindrical shell extend out to first and second away from the end of wiring hole and partly overlaps outside end, and the distal outer surface of first and second half cylindrical shell is longitudinally convexly equipped with some ribs.

The technical scheme that the utility model provides has following beneficial effect:

The utility model is provided with waterproof construction near the wiring hole of terminal box, can play good waterproof effect, greatly improves the safety in utilization of terminal box.The terminal box providing, in cylindrical shell in its waterproof construction, be filled with silicon gel, further adopt blade structure in cylindrical shell bottom surface, such terminal box, can extensively be adapted to the cable of the multiple section shapes such as flat property, circle, more convenient to use, economic, practical, and water resistance is better.

Accompanying drawing explanation

Fig. 1 is terminal box decomposing schematic representation

Fig. 2 is the structure schematic diagram of the second half cylindrical shells 502 in Fig. 1;

Fig. 3 is the structural representation that the first half cylindrical shells 501 are installed on the first half covers 401;

Fig. 4 a～Fig. 4 c is each step structural representation of terminal box installing cables line, only shows the wiring hole of terminal box and the structural representation at waterproof construction place in each figure, wherein:

Fig. 4 a is for to be placed in cable on end box;

Fig. 4 b is for to be covered on lid on end box;

Fig. 4 c is for to be fixed on nut 702 on fixed cover;

Fig. 5 is the generalized section of Fig. 4 c.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Terminal box of the present utility model, as shown in Figure 1, its box body is made up of end box 200 and lid 100 its decomposing schematic representation, and lid 100 can cover on end box 200.The top of end box and lid is respectively equipped with collision mat ring recess 101, can in collision mat ring recess, waterproof washer be installed, and when box lid and bottom lid is closed, waterproof washer plays the effect of water-tight, and end box and lid can be plastic material.The wiring hole of terminal box is located at box body side, and wiring hole can have multiple.Concrete, each wiring hole of the present utility model forms by two parts, each wiring hole forms by the second half holes 302 of being located at the first half holes 301 of end box 200 sides and being located at accordingly lid 100 sides, in the time that lid 100 and end box 200 cover, the first half holes 301 and the second half holes 302 are combined to form a wiring hole.

Terminal box of the present utility model, is provided with waterproof construction in the position of adjoining wiring hole 300, and the generalized section of waterproof construction can be referring to Fig. 5.This waterproof construction mainly comprises a fixed cover 400 and a cylindrical shell 500, and cylindrical shell is elastic material, and cylindrical shell entirety is made up of elastomeric material, and elastomeric material is for example acrylonitrile-butadiene rubber, ethylene propylene diene rubber elastomeric material.It is involuted fixed cover 400 by two and half covers, distinguishes and describes for convenient, and this two and half cover is called the first half covers and the second half covers.The first half covers 401 are outwards to be protruded out and form by the edge in the first half holes 301 of wiring hole; The second half 402, covers are outwards to be protruded out and form by the edge in the second half holes 302 of wiring hole, and when lid 100 and end box 200 cover, the first half covers 401 and the second half covers 402 are combined to form a fixed cover.Cylindrical shell 500 is combined to form by two and half cylindrical shells, distinguishes and describes for convenient, and this two and half cylindrical shell is called the first half cylindrical shells and the second half cylindrical shells, and the first half cylindrical shells 501 and the second half cylindrical shells 502 all have a holding tank, are wherein all filled with silicon gel 600.This silicon gel is existing a kind of dielectric insulation silicon gel that can be used for semiconductor module, connector, sensor, it has good flexibility, high-temperature electric insulating properties, self-healing properties, and the silicon gel SI3715(SI3715 that this silicon gel for example can adopt PUNADE company to produce is a kind of transparent pair of component selfreparing silicon gel).

The first half cylindrical shells 501 and the second half cylindrical shells 502 are installed on respectively the first half covers 401 and the second half cover 402 inner surfaces of fixed cover.In the time that end box 200 and lid 100 cover, the first half cylindrical shells 501 and the second half cylindrical shells 502 are combined to form a cylindrical shell.Fig. 2 shows the structure schematic diagram of the second half cylindrical shells 502 in Fig. 1, the structure of the first half cylindrical shells 501 and 502 basic identical in Fig. 1, and 501 structure can be with reference to figure 2.In order to make the rotation that cylindrical shell 500 can be not random in fixed cover 400, can all establish a spacing block set 5026 at the outer surface of first and second half cylindrical shell, corresponding, partly overlap inner surface at first and second and be equipped with the limited impression 4023 mating with spacing block set 5026, when first and second half cylindrical shell is installed on respectively first and second and partly overlaps inner surface, spacing block set and limited impression clamping, thereby the cylindrical shell that first and second half cylindrical shell is combined to form is located in fixed cover, can arbitrarily not rotate.

In order to improve water proofing property, one end side surface of adjoining wiring hole at the first half cylindrical shells and the second half cylindrical shells is equipped with side opening 5023, can be referring to Fig. 2 and Fig. 3, wherein Figure 3 shows that in Fig. 1 that the first half cylindrical shells 501 are installed on the structural representation of the first half cover 401 inner surfaces, it is basic identical that the second half cylindrical shells 502 are installed on structural representation and Fig. 3 of the second half covers 402, can be with reference to shown in figure 3.In the time first and second half cylindrical shell being installed on respectively to the first and second half cover inner surfaces, the side opening 5023 of first and second half cylindrical shell can be communicated with the collision mat ring recess 101 of end box, lid respectively, 600 of silicon gels that are filled in like this in first and second half cylindrical shell can link up by side opening 5023 and the waterproof washer in collision mat ring recess 101, avoid water to enter in terminal box by capillarity from the gap between wiring hole and collision mat ring recess.

In terminal box of the present utility model, its first half cover 401 and the second half covers 402 can also further adopt variable-diameter structure.Take the second half covers as example, referring to Fig. 1, the second half cover 402 one end of adjoining wiring hole are one end 4021 that internal diameter is little, are referred to as small end; And be one end 4022 that internal diameter is large away from one end of wiring hole, be referred to as large end, the variable-diameter structure of the first half covers 401 and the second half overlap 402 identical, repeat no more.Match therewith, the first half cylindrical shells and the second half cylindrical shells also can further adopt variable-diameter structure, take the second half cylindrical shells as example, referring to Fig. 1 and Fig. 2, one end that the second half cylindrical shells 502 adjoin wiring hole is small end 5021, and is large end 5022 away from one end of wiring hole; The variable-diameter structure of the first half cylindrical shells 501 is identical with the second half cylindrical shells 502, repeats no more.After end box 200 and lid 100 are covered, between the surface that fixed cover and cylindrical shell contact, form a step, it plays anti-sealing and enters in terminal box along the space between fixed cover and cylindrical shell, and simultaneously because cylindrical shell entirety is elastic material, this step also contributes to improve sealing.

For the cable of powering runs through cylindrical shell to enter in box body via wiring hole, can on two of a cylindrical shell bottom surface, offer hole realizes, this hole can be specifically by all offer half hole on two bottom surfaces of first and second half cylindrical shell, when first and second half cylindrical shell is involutory, form the hole on two bottom surfaces of cylindrical shell.But, the bottom surface of cylindrical shell also can be improved further, be explained below: in conjunction with Fig. 1～3, in two bottom surfaces of first and second half cylindrical shell, that bottom surface 5014,5024(away from wiring hole are referred to as outer bottom) form by multi-disc flabellum 50141, because cylindrical shell entirety is all elastic materials, these flabellums are also elastic materials.Fig. 4 a～4c shows the use procedure of the terminal box that this cylindrical shell bottom surface is blade structure, for the ease of the clear waterproof construction that shows, Fig. 4 a～4c only shows the structural representation at wiring hole and waterproof construction place, as shown in Fig. 4 a, silicon gel 600 upper surfaces that first cable 701 are layed in to the first half cylindrical shells 501 are then connected and fixed the current-carrying part of cable according to conventional mode of connection in end box, afterwards end box 200 and lid 100 are covered to (as shown in Figure 4 b), now, the second half covers and the first half overlap and are combined to form a fixed cover 400, the second half cylindrical shells and the first half cylindrical shells are combined to form a cylindrical shell 500, silicon gel 600 in cylindrical shell 500 outwards expands and overflows owing to being subject to the pressure-acting of cable, because the flabellum of the elastic material of its outer bottom of cylindrical shell 50141 can expand and overflows and expand outwardly along with silicon gel is outside, make the outer bottom 504 of whole cylindrical shell roughly form conical, silicon gel in outer bottom is also conical cable 701 surfaces (can referring to Fig. 4 b and Fig. 5) that are coated on.Can well enter in terminal box along the surface of cable by anti-sealing like this.In order further to strengthen waterproof effect, can also be in two of first and second a half cylindrical shell bottom surface, the inner bottom surface that adjoins wiring hole also adopts the structure being made up of multiple flabellums.

As further improvement, when the first half cylindrical shells of cylindrical shell, the second half cylindrical shells are installed on respectively the first half covers, the second half cover inner surfaces of fixed cover, the first half cylindrical shells and the second half cylindrical shells are away from the end the 4025, the 5025th of wiring hole, extend out to outside the first half covers 401 and the second half cover 402 ends, and the distal outer surface of first and second half cylindrical shell all longitudinally convexes with some ribs 40251,50251.The first half covers and the second half cover outer surfaces all have lines 4014, in the time that the two is involutory, and the screw thread 404 of lines formation fixed cover 400 outer surfaces of first and second half cover.In terminal box use procedure (referring to Fig. 4 a～4c), the silicon gel upper surface that first cable 701 is layed in to the first half cylindrical shells (is shown in Fig. 4 a), conventional wiring gimmick according to this area is connected and fixed the current-carrying part of cable in end box, afterwards end box 200 and lid 100 are covered and (see Fig. 4 b), the first half cylindrical shells and the second half cylindrical shells are combined to form cylindrical shell 400, the first half covers and the second half overlap and are combined to form fixed cover 500, the nut 702 being enclosed within on cable is tightened on fixed cover 400 and (sees Fig. 4 c) by screw thread, now, the top of nut intracavity also compresses the end of cylindrical shell, because the inner surface at the top of nut has lines conventionally, these lines can with the rib of first and second half barrel tip 40251, 50251 phase mutual friction, be close to, thereby contribute to better to screw nut, avoid nut loosening.

Near the waterproof construction that the utility model arranges wiring hole can play good waterproof effect, improves the fail safe that terminal box is used.The terminal box providing, is filled with silicon gel in the cylindrical shell in its waterproof construction, cylindrical shell bottom surface further adopts blade structure, such terminal box, can extensively be adapted to the cable of the multiple section shapes such as flat property, circle, more convenient to use, and good waterproof performance.

Terminal box of the present utility model its compared with the existing terminal box in this area, main improvement is to be provided with waterproof construction as described above in the position of adjoining wiring hole, miscellaneous part can be identical with the existing terminal box in this area with structure, for example the same with the existing terminal box in this area in box body, all can contain terminal screw and the packing ring 808 of internal wire 807, electrical connection plastic components 805, cable compression support 804, line ball pedestal 803, fastening electric wire, box bottom, the end is provided with leg 801, and end box and lid cover tightly as bolt 802 etc. by secure component.

The utility model is not limited to above-mentioned execution mode, every various changes of the present utility model or modification are not departed to spirit and scope of the present utility model, if these are changed and within modification belongs to claim of the present utility model and equivalent technologies scope, the utility model also means and comprises these changes and modification.

Claims

1. a terminal box, comprise box body and some wiring holes, described box body comprises end box, lid, described lid can be integrated with end lid, it is characterized in that, each wiring hole forms by the first half holes and corresponding the second half holes of being located at lid side of being located at end box side, also there is waterproof construction in the position of adjoining described wiring hole, described waterproof construction comprises fixed cover and cylindrical shell, wherein

Described fixed cover is made up of first and second half cover, and first and second half cover is outwards protruded out and forms by the edge in first and second half hole of wiring hole respectively, and when box lid and bottom lid closes, first and second half cover is combined to form described fixed cover;

Described cylindrical shell is installed in described fixed cover, and two bottom surfaces of cylindrical shell are provided with power supply cable and run through cylindrical shell to enter the structure in box body, and described cylindrical shell is made up of first and second half cylindrical shell that can be involutory, in first and second half cylindrical shell, is all filled with silicon gel.

2. terminal box according to claim 1, is characterized in that, first and second of cylindrical shell half cylindrical shell be installed on respectively fixed cover first and second partly overlap inner surface.

3. terminal box according to claim 2, is characterized in that, first and second partly overlaps inner surface and is equipped with limited impression, and first and second half barrel outer surface is provided with the spacing block set mating with the limited impression of first and second half cover respectively.

4. terminal box according to claim 2, is characterized in that, first and second half cover and first and second half cylindrical shell are variable-diameter structure, and one end that first and second half cover adjoins wiring hole is small end, is large end away from one end of wiring hole; Match with first and second half cover, one end that first and second half cylindrical shell adjoins wiring hole is small end, is large end away from one end of wiring hole.

5. terminal box according to claim 1, it is characterized in that, the top of end box and lid is respectively equipped with collision mat ring recess, one end that the first and second half cylindrical shells adjoin wiring hole is equipped with side opening, and described side opening can be communicated with the inner chamber of first and second half cylindrical shell with described collision mat ring recess.

6. terminal box according to claim 1, is characterized in that, two bottom surfaces of cylindrical shell are provided with hole, and power supply cable runs through cylindrical shell and enters in box body.

7. terminal box according to claim 1, is characterized in that, described cylindrical shell entirety is elastic material.

8. terminal box according to claim 7, it is characterized in that, in two bottom surfaces of the first half cylindrical shells, at least its bottom surface away from wiring hole is for to be made up of multi-disc flabellum, when excessive when being filled in the silicon gel effect of being under pressure in the first half cylindrical shells, described multi-disc flabellum can be expanded to outside; In two end faces of the second half cylindrical shells, at least its bottom surface away from wiring hole is for to be made up of multi-disc flabellum, and when excessive when being filled in the silicon gel effect of being under pressure in the second half cylindrical shells, described multi-disc flabellum can be expanded to outside.

9. terminal box according to claim 7, it is characterized in that, first and second of cylindrical shell half cylindrical shell be installed on respectively fixed cover first and second partly overlap inner surface, and first and second half cylindrical shell extend out to first and second away from the end of wiring hole and partly overlaps outside end, and the distal outer surface of first and second half cylindrical shell is longitudinally convexly equipped with some ribs.