JP2006019065A - Connector and male/female fitting connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector and a male/female fitting connector having a superior water-proof property, a dust-proof property, and a simple shape, and in which the number of parts are reduced. <P>SOLUTION: This connector 2 is composed of a cable 6, a plurality of contacts 30 which have crimped parts 32 crimped to respective tips of core wires 6a and contact parts 31, and in which diameters of the crimped parts 32 are formed to be smaller than those of the core wires 6a covered with coatings 6b, a connector housing 40 that aligns and holds the contact parts 31 of these contacts 30 so that they are extended forward and backward, and a rear cover 20 of which the front is opened and a connector housing retaining space 22 is formed inside, a plurality of cable-retaining holes 27 are formed that penetrate through the rear end, make the connector housing retaining space 22 and an outer part communicate with each other, and are connected to the plurality of contacts 30, and which inserts and retains the connector housing 40 mounted with the contacts 30 into the connector housing retaining space 22, and retains the housing by the plurality of respective cable-retaining holes 27. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connector and a male / female connector that are excellent in waterproofness and dustproofness.

  Connectors used in equipment mounted on automobiles are required to have waterproofness and dustproofness due to their usage environment, and therefore, a connector in which a seal member is arranged between members constituting the connector has been proposed (for example, Patent Documents). 1). FIG. 7 shows a conventional male-female connector 100 comprising a connector 110 and a mating connector 120. As can be seen from this figure, the male / female mating connector 100 is configured by combining a plurality of members 111, 112, 113, and 120, and the joint portion of these members and the lead-out portion of the cable 130 are waterproof. A plurality of seal members 114, 122, and 132 are attached to ensure the performance and dust resistance. Further, the contact 131 attached to the core wire of the cable 130 is not caulked and fastened only to the core wire, but is caulked and fastened so that the end portion 131a wraps the covering covering the core wire in order to prevent the core wire from being broken. ing.

Japanese Patent Laid-Open No. 2003-45549

  However, as described above, the conventional connector has a large number of constituent members, the shape of these members is complicated, and a large number of seal members are required. For this reason, such a connector has a problem that the manufacturing cost and the assembly cost increase.

  The present invention has been made in view of such problems, and an object thereof is to provide a connector and a male-female connector that have high waterproofness and dustproofness, have a simple shape, and have a reduced number of parts. .

  In order to solve the above-described problems, a connector according to the present invention includes a cable having a plurality of core wires covered with a coating, a crimping portion to be crimped to each tip of the core wire from which the coating is peeled, and the crimp A plurality of contacts having a contact portion formed to extend to the front end of the portion, and configured such that the diameter of the crimped portion crimped to the core wire is smaller than the diameter of the core wire covered with the coating, and the plurality of contacts A connector housing that holds the contact portions in alignment so as to extend in the front-rear direction, a front opening opens to form a connector housing holding space inside, and a rear end portion penetrates in the front-rear direction to connect the connector housing holding space and the outside. A plurality of cable holding holes for communicating each of the core wires connected to the plurality of contacts to the outside are formed, and the connector housing to which the plurality of contacts are attached is held by the connector housing. Holds inserted between, composed of a rear cover for holding each covered with a covering core at each of a plurality of cable holding hole with the coating.

  In this connector, a plurality of contact restricting portions protruding forward from the rear portion are formed on the rear cover, and the rear end portions of the contact portions of the plurality of contacts are in contact with each of the plurality of contact restricting portions of the rear cover. It is preferable to be configured to hold the contact so as to restrict the backward movement of the contact.

  Moreover, it is preferable that this connector is comprised so that each of cable holding holes may be formed in the substantially same magnitude | size as the outer periphery of the core wire covered with the coating | cover, and it may contact | connect this coating | cover.

  Further, the connector has a plurality of protrusions protruding upward at the upper end portion of the contact portion constituting each of the plurality of contacts. The connector housing has a plurality of contacts that extend back and forth to hold each of the plurality of contacts. When a contact holding hole and a plurality of communication holes penetrating vertically and communicating with the outside and each of the plurality of contact holding holes are formed, and each of the contact portions of the plurality of contacts is attached to the connector housing, It is preferable that each of the plurality of communication holes and the protrusion are fitted and held so that the contact portion does not come out of the connector housing.

  Further, the male and female fitting type connector according to the present invention is a mating housing in which the rear is open and an internal connector holding space is formed, and a plurality of pin-like pins that are attached to extend and protrude rearward into the connector holding space. The mating connector having a pawl portion formed so as to protrude outwardly on the outer peripheral portion of the mating housing and the mating connector that penetrates the rear cover and communicates the outside with the connector housing holding space The rear connector is inserted into the connector housing holding space from the front of the rear cover, and the front portion of the connector housing is inserted into the connector holding space to insert the connector into the connector holding space. Contact the side contact, and then fit the claw part into the fitting hole to connect the connector and the mating contact It is made.

  If the connector which concerns on this invention is comprised as mentioned above, a contact can be hold | maintained with a connector housing and a rear cover, and it can be comprised with a simple structure and few members. In addition, since the contact crimping portion is configured to be smaller than the diameter of the core wire including the covering, the rear end portion of the contact portion and the contact restricting portion extending from the rear cover are brought into contact with each other above the crimping portion. Thus, the backward movement of the contact can be restricted and held. Further, by configuring as described above, the diameter of the cable holding hole formed in the rear cover is made substantially the same as the diameter of the core wire including the covering, so that water or dust is inserted between the cable holding hole and the core wire. Does not enter the interior, and high waterproofness and dustproofness can be ensured. Further, since the core wire covered with the cable holding hole can be held without pressing the contact against the core wire including the coating, the core wire can be prevented from being broken. Furthermore, by forming a protrusion above the contact portion of the contact and fitting the protrusion with a communication hole formed in the connector housing, the contact can be securely held by the connector housing.

  Further, when the male / female fitting connector according to the present invention is configured as described above, the connector housing and the mating housing are closely connected so as to overlap each other. Can be secured.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the male-female fitting connector 1 according to the present invention includes a connector 2 for connecting a cable 6 to the main body and a mating connector 5 attached to the main body. Hereinafter, the connector 2 and the mating connector 5 will be described in detail.

  As shown in FIGS. 2 to 4, the connector 2 holds a rear cover 20 formed of an insulating material, a plurality of contacts 30 formed of a conductive material attached to the core wire 6 a of the cable 6, and the contacts 30. And a connector housing 40 formed of an insulating material. First, the contact 30 includes a contact portion 31 having a pin fitting hole 33 formed in the front portion, and a crimping portion 32 extending rearward from the contact portion 31 and connected to the core wire 6a. This crimping part 32 is crimped (crimped) to each tip part of the core wire 6a of the cable 6 from which the coating 6b has been peeled off. In addition, a protrusion 34 protruding upward is formed on the upper portion of the contact portion 31.

  The rear cover 20 includes an outer cylinder portion 21 having a front opening and a connector housing holding space 22 formed therein, and an inner cylinder portion 23 formed so as to protrude into the connector housing holding space 22. It is configured as a double cylinder. Further, a cable holding portion 26 is formed at the rear portion of the rear cover 20 so as to protrude rearward. The cable holding portion 26 passes through the front and rear and communicates with the connector housing holding space 22 and the outside. A plurality (three in this embodiment) of holding holes 27 are formed side by side. A plurality of contact restricting portions 24 are formed in the inner cylinder portion 23 so as to protrude forward and extend substantially parallel to the penetration direction of the cable holding hole 27. The inner diameter of the cable holding hole 27 is formed to be approximately the same as the outer diameter of the sheath 6b of the cable 6 (including the core wire 6a wrapped in the sheath 6b). A connector housing fitting hole 25 is formed at the bottom of the outer cylinder portion 21 so as to penetrate vertically. Further, a connector fitting hole 28 penetrating vertically is formed in the upper front portion of the outer cylinder portion 21.

  The connector housing 40 includes a housing main body 41 having a rectangular cross section. The housing main body 41 penetrates in the front-rear direction and is arranged on the left and right sides, and the number of the contacts 30 described above (in the present embodiment). Contact holding holes 45 corresponding to three) are formed. In addition, communication holes 43 are formed in the upper portion of the housing main body 41 so as to penetrate the upper and lower sides and connect the contact holding holes 45 to the outside. The communication hole 43 is formed with a locking portion 44 extending from the front edge portion into the communication hole 43 from the rear. Since the front-rear length of the locking part 44 is shorter than the front-rear length of the communication hole 43, a fitting part 43a penetrating vertically is formed in front of the locking part 44. In addition, guide protrusions 46 are formed on both the left and right sides of the connector housing 40 so as to protrude outward and extend back and forth. Further, a fitting protrusion 49 protruding downward is formed at the lower rear of the housing body 41.

  The connector 2 is configured by combining the rear cover 20, the contact 30, and the connector housing 40 configured as described above. First, the contact portion 31 of the contact 30 that is caulked and fastened to the tip end portion of the core wire 6 a of the cable 6 is inserted into the contact holding hole 45 from the rear of the connector housing 40. At this time, the protruding portion 34 formed on the upper portion of the contact portion 31 is inserted while pushing up the locking portion 44, and when the tip of the contact portion 31 is inserted to the vicinity of the tip of the connector housing 40, it is fitted. The locking portion 44 returns to its original state due to elasticity, and the projection 34, that is, the contact 30 is fixed to the connector housing 40 and aligned and held. The front opening of the contact holding hole 45 and the pin fitting hole 33 formed in the front part of the contact part 31 are configured to be aligned.

  The core wires covered with the sheath 6 a of the cable 6 are respectively passed through the cable holding holes 27 from the front of the rear cover 20. Then, the connector housing 40 in which the contacts 30 are fixedly held is inserted into the connector housing holding space 22 of the rear cover 20 and is fitted to the inner cylinder portion 23. That is, as shown in FIG. 3, the contact restricting portion 24 of the rear cover 20 is inserted into the contact holding hole 45 of the connector housing 40, and the contact portion 31 is abutted and held from the rear so as not to come out of the contact holding hole 45. Further, the fitting protrusion 49 formed at the lower rear part of the connector housing 41 is fitted into the connector housing fitting hole 25 of the rear cover 20, so that the rear cover 20 and the connector housing 40 are combined so as to hold the contact 30. To be fixed.

  As described above, since the contact 30 is caulked and fastened only to the core wire 6a of the cable 6, this portion (pressure contact portion 32) can be made smaller than the diameter of the portion covered with the coating 6b. For this reason, the inner diameter of the cable holding hole 27 can be formed to be approximately the same as the outer diameter of the cable 6 (coating 6 b) and can be brought into close contact with the cable 4. Therefore, by adopting such a simple shape, waterproofness and dustproofness can be enhanced without providing a seal member between the cable holding hole 27 and the cable 6 (coating 6b). Further, by holding the tip of the cable 6 (in the vicinity of the core wire 6a from which the coating 6b has been peeled) in close contact with the cable holding hole 27, when the contact 30 is caulked and fastened to the core wire 6a, the coating 6b is simultaneously applied. The core wire 6b can be prevented from being torn even if the contact tip 30 is not caulked and fastened by the contact 30.

  Furthermore, since the diameter of the press contact portion 32 that is caulked and fastened to the core wire 6a can be made smaller than the diameter of the covering 6b, the contact restricting portion 24 of the rear cover 20 can be inserted into the contact holding hole 45. Since the contact restricting portion 24 can hold the contact portion 31, a special member for holding the contact 30 is not required. Therefore, since the contact 30 can be held by the two members of the connector housing 40 and the rear cover 20, the number of parts can be reduced and the number of assembling steps can be reduced to reduce the manufacturing cost of the connector 2.

  On the other hand, as shown in FIGS. 5 and 6, the mating connector 5 includes a cylindrical mating housing 51 that is made of an insulating material and protrudes forward and has a connector holding space 52 formed therein. A plurality of pin-like mating contacts 54 formed of a conductive material projecting side by side into the connector holding space 52 from the rear portion of the housing 51 (in this embodiment, according to the connector 2). The number of contacts 54 on the other side is three). Guide grooves 53, 53 extending in the front-rear direction and communicating with the connector holding space 52 are formed on both the left and right sides of the opening of the mating housing 51 that forms the connector holding space 52. That is, the cross-sectional shape of the connector housing 40 and the cross-sectional shape forming the connector holding space 52 of the mating housing 51 are configured to be substantially the same shape. Further, the cross-sectional shape forming the connector housing holding space 22 of the outer cylinder portion 21 of the connector 2 and the cross-sectional shape of the mating connector 51 of the mating connector 51 are configured to be substantially the same shape. A claw portion 55 that protrudes upward is formed at the upper front of the mating housing 51.

  When connecting the connector 2 to the mating connector 5 configured in this way, the mating housing 51 of the mating connector 5 is inserted into the connector housing holding space 22 surrounded by the outer cylinder portion 21 of the connector 2, The connector housing 40 of the connector 2 is inserted into the connector holding space 52 of the mating connector 5. Then, the guide protrusions 46 and 46 formed on the left and right sides of the connector housing 40 are guided by the guide grooves 53 and 53 of the mating connector 5 and are drawn into the connector holding space 52, and the mating contacts 54 are contacted respectively. It is inserted through the front opening of the holding hole 45 and inserted into the pin fitting hole 33 formed in the contact portion 31 of the contact 30 to be fitted. The connector 2 is connected and fixed to the mating connector 5 by fitting the connector fitting hole 28 of the rear cover 20 and the claw portion 55 of the mating housing 51. As is apparent from FIG. 3 and the like, the members 20, 30, and 40 constituting the connector 2 and these members and the counterpart housing 51 are connected in close contact with each other. Further, the connector fitting hole 28 is fitted so that the outer peripheral surface of the claw portion 55 is in close contact with the inner peripheral surface of the connector fitting hole 28.

  When the male / female fitting connector 1 according to the present embodiment is configured as described above, the rear cover 20 (outer cylinder portion 21), the counterpart housing 51, and the connector housing 30 are closely connected so as to alternately overlap in a plan view. Therefore, it is difficult for water and dust to enter the connecting portion between the contact 2 and the counterpart contact 5, and the waterproofness and dustproofness can be improved.

It is a perspective view which shows the male-female fitting type connector which concerns on this invention. It is a perspective view which shows the state which decomposed | disassembled the component of the connector which concerns on this invention. It is a perspective view of sectional drawing in the state where the connector and the other party connector were connected. 4 is a cross-sectional view of FIG. 3, (A) is a cross-sectional view of IV _A -IV _A , and (B) is a cross-sectional view of IV _B -IV _B. FIG. It is a front view of the other party contact. It is a cross-sectional view of FIG. 5, (A) is a VI _A -VI _A cross-sectional view, (B) is a VI _B -VI _B sectional view. It is a figure which shows the conventional male-female fitting type connector, (A) is not seen from the connected connector side, (B) is VII _B- VII _B sectional drawing of (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Male-female fitting type connector 2 Connector 5 Opposite connector 6 Cable 6a Core wire 6b Cover 20 Rear cover 22 Connector housing holding space 24 Contact restriction part 27 Cable holding hole 28 Fitting hole 30 Contact 31 Contact part 32 Crimp part 34 Projection part 40 Connector Housing 43 Communication hole 45 Contact holding hole 51 Mating housing 54 Mating contact 55 Claw

Claims (5)

A cable having a plurality of core wires covered with a coating;
A crimping portion that is crimped to the tip of each of the core wires from which the coating has been peeled off, and a contact portion that is formed to extend to the front end of the crimping portion, and the diameter of the crimping portion that is crimped to the core wire is A plurality of contacts configured to be smaller than the diameter of the core wire covered with a coating;
A connector housing that holds the contact portions of the plurality of contacts in alignment so as to extend in the front-rear direction;
Each of the core wires connected to the plurality of contacts is connected to the outside through a front opening to form a connector housing holding space in the interior, penetrating back and forth in the rear end portion, and connecting the connector housing holding space to the outside. A plurality of cable holding holes are formed, and the connector housing to which the plurality of contacts are attached is inserted and held in the connector housing holding space, and each of the core wires covered with the covering is attached together with the covering A connector comprising: a rear cover held by each of the plurality of cable holding holes. A plurality of contact restricting portions protruding forward from the rear portion are formed on the rear cover,
The rear end portions of the contact portions of the plurality of contacts are configured to be in contact with each of the plurality of contact restricting portions of the rear cover to restrict the rearward movement of the plurality of contacts. The connector according to claim 1.   3. Each of the plurality of cable holding holes is formed to have substantially the same size as the outer periphery of the core wire covered with the covering, and is configured to be in close contact with the covering. Connector described in. A protrusion projecting upward is formed at the upper end of the contact portion constituting each of the plurality of contacts,
In the connector housing,
A plurality of contact holding holes extending back and forth inside to hold each of the plurality of contacts;
A plurality of communication holes penetrating vertically and communicating with the outside and each of the plurality of contact holding holes are formed,
When each of the contact portions of the plurality of contacts is attached to the connector housing, each of the plurality of communication holes and the protrusion are fitted so that the contact portion does not come out of the connector housing. The connector according to claim 1, wherein the connector is held. A mating housing having a rear opening and a connector holding space formed therein, a plurality of pin-shaped mating contacts attached to extend and project into the connector holding space, and an outer periphery of the mating housing A mating connector having a claw portion formed so as to protrude outward from the portion;
It is comprised from the connector in any one of Claims 1-4 in which the fitting hole which penetrates the said rear cover and connects the exterior and the said connector housing holding space was formed,
Inserting the rear part of the mating housing into the connector housing holding space from the front of the rear cover, and inserting the front part of the connector housing into the connector holding space to contact the contact and the mating contact, Furthermore, the male and female fitting type connector is configured to connect the connector and the mating contact by fitting the claw portion into the fitting hole.

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