CN102623832B - Waterproof connector - Google Patents

Abstract

The invention aims to provide a waterproof connector which is small in size, excellent in assembly, accommodation and water resistance and low in cost. The waterproof connector of the invention is used for cable connection, and is characterized in that the connector has a housing with a cylinder for mounting a cable with a crimped joint, a waterproof sleeve and a cover part. A sleeve installing part for elastically installing the inner periphery of the front end of the sleeve is disposed at the outer periphery of the cylinder on the housing. The inner periphery of the rear end of the sleeve is installed on the outer periphery of the cable. The cover part is a cylindrical body covering the outer periphery of the sleeve. The rear end of the cylindrical body has a cable insertion hole and a hook portion for hooking on the surface of the covered portion of the cable.

Description

Watertight connector

Technical field

The present invention relates to the watertight connector for watertight ground stube cable.

Background technology

Such as, the occasion of cable electrical connection solar panel etc. is being used to use watertight connector.

This existing watertight connector there will be a known as shown in Fig. 5 (a) with Types Below: on the housing of built-in cable 1, form external thread part 101, use the cap assembly 103 of acorn nut shape from outside fit sealing part 102.

In addition, there will be a known as shown in Fig. 5 (b) with Types Below: throughout housing 101a and cable 1 ground, guard tube 104 is installed, utilizes the fastening outer circumferential side of cap assembly 105,106 (with reference to patent documentation 1) half-and-half cut open.

But, because the connector of cap assembly using the cap assembly of this acorn nut shape and half-and-half cut open shape has to increase the size of cover portion entirety, therefore when arranging multiple solar panel etc., cable difficult around change, the stand at the back side of solar panel etc. holds the occasion of cable, there is the problem of its spatial accommodation increase and so on.

Therefore, applied for before the applicant only inserting just assemblnig watertight connector by crimping at leading section the cable being connected with joint from this joint side in No. 2009-286332, Japanese patent application, the present invention is the invention improving this invention further.

Prior art document

Patent documentation 1: Japanese Unexamined Patent Publication 2008-130462 publication

Summary of the invention

The object of the present invention is to provide watertight connector that the is small-sized and cheapness of assembleability, containment etc. and water proofing property excellence.

Watertight connector of the present invention is the watertight connector connected for cable, it is characterized in that, connection device is got everything ready the housing in the cylinder portion for installing the cable that butt joint crimps, water proofing property sleeve and cap assembly, the cylinder portion on above-mentioned housing of being located at has sleeve installation portion for the flexibly inner peripheral portion of installing sleeve front at peripheral part, the inner peripheral portion elasticity of the rear end side of sleeve is arranged on the peripheral part of cable, cap assembly is the cylindrical body of the peripheral part of cover sleeve, the rear end of this cylindrical body has the patchhole of cable and hook portion on the surface of the covering part being hooked in this cable.

At this, also can have fixed part in side for housing and cap assembly, at opposite side, there is the portion of being fixed.

Like this, reliably cap assembly can be arranged on housing, and this cap assembly can be utilized from outer circumferential side pressing and protection sleeve.

In the present invention, sleeve is made up of rubber elastomeric material, has the form of tubulose, and internal diameter is less than the external diameter of cable in a free state.

In addition, the internal diameter of cap assembly is preferably identical with the external diameter of sleeve part or slightly little, becomes the degree can inserting sleeve part.

In addition, if cable to be inserted the inner side of sleeve part, then due to the elasticity of sleeve part, external diameter becomes large a little, but is preferably now the state that the outside of sleeve part contacts with the inner peripheral surface of cap assembly.

Assemble by inserting cable from the rear end side in the cover portion be made up of cylindrical body, with regard to the patchhole of cable had in the rearward end side of cylindrical body, in order to easily insert cable, the internal diameter of patchhole is slightly larger than the external diameter of cable.

But if so set the internal diameter of patchhole, then at the temperature step-down of peripheral part, the occasion etc. of the reduced diameter of cable, likely becomes the reason producing cap assembly and cable position and mutually depart from.

Therefore, the present invention formed in cap assembly incision cable covering part surface hook portion.

Effect of the present invention is as follows.

Watertight connector of the present invention makes cylindrical body by the cap assembly of the peripheral part of the sleeve by protection water proofing property; be in a ratio of small-sized with existing acorn nut shape and the cap assembly that half-and-half cuts open type; such as in the occasion of the installation for solar panel; cable around becoming easy, thus the spatial accommodation of cable connector can be reduced.

In addition, owing to having to be hooked on cap assembly the covering part of cable hooks portion, even if therefore mercury dropped, the external diameter of cable shrinks, and also can reliably mutually hook.

If cap assembly and housing arrange fixed part in order to interfix in side and arrange at opposite side the portion that is fixed, then prevent cap assembly from coming off from the housing of connector, improve the protection reliability of sleeve etc.

Accompanying drawing explanation

Fig. 1 represents the structure example of watertight connector of the present invention.

Fig. 2 represents the enlarged drawing in connector rear end portion.

Fig. 3 represents the patchhole side outside drawing of cap assembly.

Fig. 4 represents the connection example of pin connector and socket connector.

Fig. 5 represents existing connector.

In figure:

1-cable, 1b-covering part, 2-joint, 10-watertight connector, 11-housing, 11a-sleeve installation portion, 11b-retaining lugs, 12-sleeve, 13-cap assembly, 13a-fixing hole, 13b-notch, 13e-hooks portion.

Embodiment

Watertight connector structure of the present invention can be applicable to socket connector and pin connector both sides, and Fig. 1 represents the example of socket-type socket connector.

Watertight connector 10 of the present invention has the resin-made housing 11, rubber sleeve 12 and the resin cover parts 13 that utilize injection mo(u)lding etc. to be shaped.

Housing 11 has the sleeve installation portion 11a of the cylindrical shape for elastic mounting bushings 12 in the rearward end of the fitting portion opposition side with object connector (pin connector).

As shown in Fig. 1 (a), (b), in the inner peripheral surface elasticity of sleeve 12 (being tightly connected) mode on the outer peripheral face of this sleeve installation portion 11a of installing, the inner side of sleeve 12 is embedded sleeve installation portion 11a.

Sleeve 12 has elasticity, and the internal diameter of sleeve 12 is set as slightly less than the external diameter of sleeve installation portion 11a, utilizes the elastic force of sleeve 12 to keep watertightness between the inner peripheral surface and the outer peripheral face of sleeve installation portion of sleeve 12.

Be fitted together to side at the object contact of sleeve installation portion 11a and have the stage portion 11c that external diameter becomes large, the front end face 12a of sleeve 12 abuts with this step surface.

The length setting of sleeve installation portion 11a is shorter than the total length of sleeve 12, and such as the length of sleeve installation portion 11a is approximately 1/2 ~ 1/3 of the length of sleeve 12.

Therefore, as shown in Fig. 1 (b), the rear end side of sleeve 12 is the state more outstanding than sleeve installation portion 11a forward end.

In this condition, as shown in Fig. 1 (b), (c), the cap assembly 13 of cylindrical body is installed in the mode of the peripheral part from outer side covers sleeve 12.

Cap assembly 13 is resinous, internal diameter is set as: under the state that sleeve 12 is arranged on the sleeve installation portion 11a of housing 11, identical or slightly little with the external diameter of sleeve 12 of periphery and the external diameter of the sleeve 12 of part posteriorly given prominence to from sleeve installation portion 11a that are positioned at this sleeve installation portion 11a, be preferably the state of the outer peripheral face of the inner peripheral surface pressing sleeve 12 of cap assembly 13.

In addition, if cable to be inserted the rearward end of sleeve 12, then because the external diameter of sleeve 12 becomes large a little, enter one thus and pressed by the inner peripheral surface of pressure cap assembly.

The rear end side of cap assembly 13 has the patchhole 13d of reflex part 13c to the inside and cable 1, has fixing hole 13a in front.

If be arranged on by cap assembly 13 on the peripheral part of sleeve 12, then the fixing hole 13a of cap assembly 13 is fixed on the retaining lugs 11b on the outer peripheral face being located at housing 11, and reflex part 13c is positioned at the rear end face 12b of sleeve 12.

In the present embodiment, owing to being provided with the fixed claw 11d fixing with object connector on housing 11, therefore on cap assembly 13, form notch 13b, thus not with the bottom interference of this fixed claw 11d.

Cable 1 as described later, under the state that front is connected to metal joint 2, inserts from the patchhole 13d of the rear end side of cap assembly 13 and assembles.

Fig. 2 represents the enlarged drawing of this state, and Fig. 3 (a) represents the rearward end outside drawing of cap assembly 13.

The external diameter of cable 1 is set to d0, if assembleability when considering patchhole 13d cable being inserted resinous cap assembly 13, the internal diameter of patchhole is set to d, then preferably internal diameter d is slightly larger than outside diameter of cable d0.

But, if the covering part 1b of cable 1 shrinks because temperature etc. declines, then produce between patchhole 13d and the covering part 1b of cable 1 and loosen, likely watertightness is had an impact.

Therefore, arrange and hook portion 13e, it is outstanding to the inner side of patchhole 13d that this hooks portion 13e, and hook in the mode on the surface of the covering part 1b cutting cable 1.

Therefore, the inside dimension d1 with the part of hook stop 13e is less than the outside diameter d 0 of cable 1.

Like this, as shown in the cutaway view of Fig. 2 (b), hook in the mode forming switch-in part 1c on the surface of the covering part 1b be made up of resin or rubber.

Actual to hook the degree of depth be about 0.05 ~ 0.1mm is enough, but represent enlargedly in Fig. 1 (d), Fig. 2 (b).

In the present embodiment, for arranging the inclined plane 13f that tilts towards inner side along the direction of insertion of cable 1 easily to insert the example of cable 1, the magnitude setting of portion 13e should be hooked, three places in Fig. 3 (b), everywhere in Fig. 3 (c), quantitatively do not limit, in addition, example as shown in Fig. 3 (d), also by forming multiple otch 13h on reflex part 13c to the inside, portion of the hooking 13g making the internal diameter of reflex part 13c slightly less than the external diameter of cable can be formed.

The metal joint 2 utilizing pressure contact portion 1a to make to have otch 2a and stabilizing member 2b at the leading section of cable 1 crimps with center line and is connected.

At this, otch 2a and stabilizing member 2b erects from metal adapter body cutting and forms, and in order to this joint 2 not passed through sleeve installation portion 11a with hindering, can be set as that the size of the circumscribed circle of each jag is less than the internal diameter of sleeve installation portion 11a when assembling.

As shown in Fig. 1 (c), (d), if the cable patchhole 13d of joint 2 from cap assembly 13 is inserted, then fixing and insert the otch fixed part and the stabilizing member insertion groove (all omitting diagram) that are located at housing 11 side, thus can assembly and connection device simply.

Now, with regard to the inner peripheral surface of sleeve 12, internal diameter d2 is less than outside diameter of cable d0, in order to the expanding laterally mode effect of the outer peripheral face of cable 1, and utilize the elastic force of sleeve 12 to seal, but because the inner peripheral surface of outer circumferential side with cap assembly 13 abuts, therefore utilize its reaction force, the outer peripheral face of cable 1 and the inner peripheral surface of sleeve 12 are sealed more strongly.

As shown in Figure 4, the pin connector 20 corresponding with socket connector 10 is also identical structure, and socket connector 10 has fixed claw 11d, chimeric with the fixing hole 21a on the housing 21 being located at pin connector 20 and fixing, and is electrically connected to each other.

In the present embodiment, for following example: the fitting portion 11j of socket connector 10 is fitted together to the inner side of the housing 21 being arranged on pin connector 20, and housing 21 inner peripheral surface of the O ring 11i and pin connector 20 that are located at the peripheral part of the fitting portion 11j of socket connector 10 side is tightly connected.

In watertight connector of the present invention, in advance sleeve and cap assembly are arranged on the housing of connector, only by inserting at leading section, the cable of joint is installed, relative to the covering part external diameter of cable, the state that expanding mode inserts is carried out to the inner side of sleeve 12, produce reaction force due to cap assembly pressing, thus simple structure can be obtained fully and sealing load for guaranteeing water proofing property.

Claims (2)

1. a watertight connector, connects for cable, it is characterized in that,

Connection device is got everything ready the housing in the cylinder portion for installing the cable that butt joint crimps, water proofing property sleeve and cap assembly,

The cylinder portion on above-mentioned housing of being located at has sleeve installation portion for the flexibly inner peripheral portion of installing sleeve front at peripheral part, and the inner peripheral portion elasticity of the rear end side of sleeve is arranged on the peripheral part of cable,

Cap assembly is the all-round cylindrical body of the peripheral part of cover sleeve integratedly, and the rear end of this cylindrical body has inserts cable so that the patchhole of assembling and hook portion on the surface of the covering part being hooked in this cable; Under the state that sleeve is arranged on the sleeve installation portion of housing, the internal diameter of cap assembly is identical or slightly little with the external diameter of sleeve of periphery and the external diameter of the sleeve of part posteriorly given prominence to from sleeve installation portion being positioned at sleeve installation portion; Insert at leading section and the cable of joint has been installed, relative to the covering part external diameter of cable, the state that expanding mode inserts is carried out to the inner side of sleeve, cap assembly pressing and produce reaction force; Portion of hooking is outstanding to the inner side of patchhole, and hooks in the mode on the surface of the covering part cutting cable.

2. watertight connector according to claim 1, is characterized in that,

Housing and cap assembly have fixed part in order to interfix in side, have at opposite side the portion of being fixed.