JP2014194899A - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector capable of reducing the number of components.SOLUTION: A waterproof connector 1 includes: an internal housing 7 where a terminal 3 is formed by a synthetic resin that is insert molded, the internal housing 7 having a closing part 5; and an external housing 11 which is made of a synthetic resin, houses the internal housing 7, and has an opening part 9 closed by the closing part 5. The closing part 5 and the opening part 9 are coupled by welding means.

Description

  The present invention relates to a waterproof connector.

  Conventionally, as a waterproof connector, a terminal portion as an internal housing having a flange portion as a closing portion made of a synthetic resin in which a terminal is insert-molded, and an opening portion that is made of synthetic resin and accommodates the terminal portion and is closed by the flange portion And a cover portion serving as an external housing having a fitting portion as described above (see, for example, Patent Document 1).

  In such a waterproof connector, the terminal cannot be held inside the molding die, and it is very difficult to insert-mold the terminal into the terminal part accommodated in the case part. The terminal part is molded separately.

  For this reason, in the waterproof connector disclosed in Patent Document 1, in order to obtain waterproofness between the flange portion of the terminal portion and the fitting portion of the case portion, a seal structure such as an O-ring is assembled to the flange portion, and the flange portion And the fitting portion are liquid-tightly coupled.

JP 2012-238482 A

  However, in the waterproof connector as in Patent Document 1, since the sealing structure such as an O-ring is disposed between the closing portion and the opening portion, the number of parts is increased.

  Accordingly, an object of the present invention is to provide a waterproof connector capable of reducing the number of parts.

  The invention according to claim 1 is an internal housing having a closed portion made of synthetic resin in which a terminal is insert-molded, and an external housing made of synthetic resin and having an opening portion that receives the internal housing and is closed by the closed portion. The closed connector and the opening are connected by a welding means.

  In this waterproof connector, since the closing portion and the opening are joined by the welding means, it is not necessary to arrange another member between the closing portion and the opening, and the closing portion can be formed with a minimum number of parts. Waterproofness between the openings can be ensured.

  Therefore, in such a waterproof connector, the gap between the closed portion and the opening can be waterproofed without using other members, and the number of components can be reduced.

  Invention of Claim 2 is the waterproof connector of Claim 1, Comprising: The fitting part by which the other party connector which accommodates the other party terminal connected to the said terminal is fitted is provided in the said external housing, The fitting portion is provided with a metal member that defines a frontage dimension of the fitting portion.

  In this waterproof connector, the fitting part is provided with a metal member that defines the frontage dimension of the fitting part, so that the frontage dimension of the fitting part is affected by errors in molding an external housing made of synthetic resin. The accuracy of the frontage dimension of the fitting portion can be improved.

  A third aspect of the present invention is the waterproof connector according to the second aspect, wherein the metal member is insert-molded in the fitting portion.

  In this waterproof connector, since the metal member is insert-molded in the fitting portion, the external housing and the metal member can be handled as a single member, and the number of parts can be reduced. In addition, there is no gap between the fitting portion and the metal member, and the waterproofness can be improved.

  The invention according to claim 4 is the waterproof connector according to claim 2, wherein the metal member is press-fitted into the fitting portion.

  In this waterproof connector, since the metal member is press-fitted into the fitting portion, the outer dimension of the fitting portion is defined by the metal member in accordance with the mating connector fitted into the fitting portion after the outer housing is molded. Can do.

  A fifth aspect of the present invention is the waterproof connector according to any one of the first to fourth aspects, wherein the outer housing is arranged with an outer periphery inserted through a housing member, and the outer housing and the housing are arranged. A seal member that is in close contact with the outer housing and the housing member is disposed between the body members.

  In this waterproof connector, since the sealing member that is in close contact with the external housing and the housing member is disposed between the external housing and the housing member, the waterproof property between the external housing and the housing member is ensured. Can do.

  A sixth aspect of the present invention is the waterproof connector according to the fifth aspect, wherein the seal member is integrally formed with the outer housing.

  In this waterproof connector, since the seal member is integrally formed with the external housing, the external housing and the seal member can be handled as a single member, and the number of parts can be reduced.

  According to the present invention, it is possible to provide a waterproof connector that can reduce the number of components.

1 is a perspective view of a waterproof connector according to an embodiment of the present invention. It is a disassembled perspective view of the waterproof connector which concerns on embodiment of this invention. (A) is a perspective view of the inner housing of the waterproof connector which concerns on embodiment of this invention. FIG. 3B is a bottom view of FIG. (A) is a perspective view of the external housing of the waterproof connector which concerns on embodiment of this invention. FIG. 4B is a bottom view of FIG. It is sectional drawing of the waterproof connector which concerns on embodiment of this invention. It is a perspective view when the waterproof connector which concerns on embodiment of this invention is arrange | positioned to a housing member. (A) is a perspective view of the inner housing of the waterproof connector which concerns on embodiment of this invention. (B) is a perspective view of the external housing of the waterproof connector which concerns on embodiment of this invention. It is a side view of the waterproof connector which concerns on embodiment of this invention. It is a rear view of the waterproof connector which concerns on embodiment of this invention.

  A waterproof connector according to an embodiment of the present invention will be described with reference to FIGS.

  The waterproof connector 1 according to the present embodiment includes an inner housing 7 having a closing portion 5 made of synthetic resin in which terminals 3 are insert-molded, and an opening that contains the inner housing 7 made of synthetic resin and is closed by the closing portion 5. And an external housing 11 having a portion 9.

  And between the obstruction | occlusion part 5 and the opening part 9 is couple | bonded by the welding means.

  Further, the external housing 11 is provided with a fitting portion 13 into which a mating connector (not shown) that accommodates a mating terminal (not shown) connected to the terminal 3 is fitted. A metal member 15 that defines a frontage dimension of the joint portion 13 is provided.

  Further, the metal member 15 is insert-molded in the fitting portion 13.

  In addition, the outer housing 11 is disposed with the outer periphery being inserted into the housing member 17, and a seal member 19 that is in close contact with the outer housing 11 and the housing member 17 is interposed between the outer housing 11 and the housing member 17. Has been placed.

  Further, the seal member 19 is integrally formed with the outer housing 11.

  As shown in FIGS. 1 to 9, the inner housing 7 is made of an insulating synthetic resin material, the terminal 3 is insert-molded therein, and includes a terminal portion 21 and a closing portion 5. The terminal portion 21 protrudes from one side surface of the closing portion 5 and extends in the width direction so that the plurality of terminals 3 are arranged in parallel. The terminal portion 21 is accommodated in the outer housing 11 and disposed on the fitting portion 13 side.

  The closing part 5 is provided so as to be able to close the opening edge of the opening 9 of the external housing 11. After the terminal part 21 is received from the opening 9 of the external housing 11, the opening 9 is closed to close the opening 9. It is welded to the opening edge by welding means. The terminal 3 is insert-molded in such an inner housing 7.

  The terminal 3 is made of a conductive metal material, is formed in an L shape, and one end of the terminal 3 is exposed to the outside from the other surface side of the closing portion 5 of the internal housing 7 and is electrically connected to a conductor portion formed on the substrate 23. The other end side is disposed on the terminal portion 21 of the inner housing 7. The terminals 3 are insert-molded in the inner housing 7 so as to be arranged in parallel (in this case, five) at equal intervals.

  Thus, by forming the terminal 3 in the inner housing 7, no gap is generated between the inner housing 7 and the terminal 3. The inner housing 7 in which the terminals 3 are insert-molded is accommodated in the outer housing 11.

  The outer housing 11 is made of an insulating synthetic resin material, is formed in a casing shape, and includes an opening 9 and a fitting portion 13. The opening 9 is provided on one side surface in the length direction of the external housing 11. The opening 9 is welded to the closing portion 5 by welding means after the terminal portion 21 of the inner housing 7 is inserted and closed by the closing portion 5.

  The fitting portion 13 is provided with an opening on the other side surface in the length direction of the outer housing 11, and the terminal portion 21 of the inner housing 7 is disposed therein. A mating connector that accommodates a mating terminal connected to the terminal 3 is fitted into the fitting portion 13, and the terminal portion 21 is inserted into the mating connector, whereby the terminal 3 and the mating terminal are electrically connected. Is done. In addition, the other party terminal is provided in the terminal of the electric wire etc. which were connected to a power supply, an apparatus, etc.

  Here, a metal member 15 made of a conductive metal material is insert-molded in the fitting portion 13, and the opening size of the fitting portion 13 is defined by the metal member 15. By defining the front dimension of the fitting portion 13 by the metal member 15 as described above, the accuracy of the front dimension of the fitting portion 13 is not affected by a dimensional error during molding of the outer housing 11 made of synthetic resin. Can be held. In addition, it is possible to improve the strength against twisting or the like when the mating connector is fitted to the fitting portion 13. In addition, since the metal member 15 is insert-molded in the outer housing 11, no gap is generated between the outer housing 11 and the metal member 15.

  The metal member 15 may be pressed into the fitting portion 13 after the outer housing 11 is formed. The metal member 15 is press-fitted into the fitting portion 13 in this manner, so that the outer dimension of the fitting portion 13 is adjusted by the metal member 15 according to the mating connector fitted into the fitting portion 13 after the outer housing 11 is formed. Can be prescribed.

  The metal member 15 is electrically connected to a shield member provided in the mating connector by mating the mating connector with the mating portion 13, and a shield that prevents leakage and intrusion of noise and the like in the mating portion 13. Configure the circuit. The metal member 15 does not need to form a shield circuit as long as the metal member 15 has a function of defining the frontage dimension of the fitting portion 13 and improving the strength of the fitting portion 13. The external housing 11 in which such a metal member 15 is insert-molded is disposed on the housing member 17.

  The housing member 17 includes an insertion portion 25 through which the fitting portion 13 of the outer housing 11 is inserted, a substrate 23 to which the terminal 3 insert-molded in the inner housing 7 is connected, and a fixing portion 27 that fixes the outer housing 11. And. The housing member 17 may have a structure that entirely covers the periphery of the outer housing 11 by the fixing portion 27 or the like.

  In a state where the external housing 11 is fixed to the housing member 17, the mating connector is fitted into the fitting portion 13 of the external housing 11, and the terminal 3 and the mating terminal are electrically connected. A seal member 19 is disposed between the fitting portion 13 of the outer housing 11 and the insertion portion 25 of the housing member 17.

  The seal member 19 is made of a sealing material such as synthetic rubber having elasticity, is formed in an annular shape, and is integrally formed on the outer periphery of the fitting portion 13 of the outer housing 11. By integrally molding the seal member 19 and the outer housing 11 in this way, there is no gap between the seal member 19 and the outer housing 11, and the sealing performance can be improved. The outer housing 11 can be handled as a single member.

  The seal member 19 formed integrally with the outer housing 11 is brought into close contact with the inner peripheral surface of the insertion portion 25 by inserting the fitting portion 13 of the outer housing 11 into the insertion portion 25 of the housing member 17. The space between the outer housing 11 and the housing member 17 is sealed.

  In the waterproof connector 1 configured as described above, the closing portion 5 of the inner housing 7 and the opening 9 of the outer housing 11 are integrally joined by welding means. Specifically, the welding surface 29 of the closing portion 5 and the welding surface 31 of the opening 9 are brought into close contact with each other by applying a load from the direction of the arrow shown in FIG. Applying energy such as by welding. At this time, it is preferable to perform welding continuously in the circumferential direction as in a single stroke so that there is no gap between the welding surface 29 of the closing portion 5 and the welding surface 31 of the opening 9.

  Thus, by welding the closing part 5 and the opening part 9 with a welding means, between the closing part 5 and the opening part 9 can be waterproofed, without using another member. Moreover, since the closing part 5 and the opening part 9 are welded, a clearance gap does not arise between the closing part 5 and the opening part 9, and it improves waterproofness compared with the case where another member is used. Can do. The welding means is not limited to laser and heat welding, but may be other welding means such as ultrasonic welding.

  In such a waterproof connector 1, since the closing portion 5 and the opening 9 are coupled by the welding means, it is not necessary to arrange another member between the closing portion 5 and the opening 9. The waterproofness between the closing part 5 and the opening part 9 can be ensured with the number of parts.

  Therefore, in such a waterproof connector 1, it is possible to waterproof between the closing portion 5 and the opening 9 without using other members, and the number of parts can be reduced.

  Further, since the fitting part 13 is provided with the metal member 15 that defines the frontage dimension of the fitting part 13, the frontage dimension of the fitting part 13 is an error in molding the outer housing 11 made of synthetic resin. The accuracy of the frontage dimension of the fitting part 13 can be improved without being affected.

  Furthermore, since the metal member 15 is insert-molded in the fitting portion 13, the external housing 11 and the metal member 15 can be handled as a single member, and the number of parts can be reduced. In addition, there is no gap between the fitting portion 13 and the metal member 15, and the waterproofness can be improved.

  Further, a seal member 19 that is in close contact with the external housing 11 and the housing member 17 is disposed between the external housing 11 and the housing member 17, so that the space between the external housing 11 and the housing member 17 is not limited. Waterproofness can be ensured.

  Furthermore, since the seal member 19 is integrally formed with the outer housing 11, the outer housing 11 and the seal member 19 can be handled as a single member, and the number of parts can be reduced.

  In the waterproof connector according to the embodiment of the present invention, the outer housing is arranged in the housing member. However, for example, when the terminal insert-molded in the inner housing is connected to the terminal of the electric wire, the outer housing is not necessarily used. May not be disposed on the housing member.

  In addition, the closing portion and the opening portion are welded to each other in the lengthwise direction of the housing by welding means. For example, the closing portion may be fitted into the opening portion and closed. For example, the circumferential surface on the outer peripheral side of the closing portion and the circumferential surface on the inner peripheral side of the opening portion are welded by welding means, etc., in accordance with the structure of the closing portion and the opening portion, What is necessary is just to weld an opposing surface with a welding means.

DESCRIPTION OF SYMBOLS 1 ... Waterproof connector 3 ... Terminal 5 ... Closure part 7 ... Internal housing 9 ... Opening part 11 ... External housing 13 ... Fitting part 15 ... Metal member 17 ... Housing member 19 ... Seal member

Claims (6)

A waterproof connector comprising: an inner housing having a closing portion made of synthetic resin in which a terminal is insert-molded; and an outer housing made of synthetic resin and having an opening portion that accommodates the inner housing and is closed by the closing portion. ,
The waterproof connector, wherein the closing portion and the opening portion are coupled by welding means. The waterproof connector according to claim 1,
The external housing is provided with a fitting portion into which a mating connector that accommodates a mating terminal connected to the terminal is fitted,
The waterproof connector, wherein the fitting portion is provided with a metal member that defines a frontage dimension of the fitting portion. The waterproof connector according to claim 2,
A waterproof connector, wherein the metal member is insert-molded in the fitting portion. The waterproof connector according to claim 2,
The waterproof connector, wherein the metal member is press-fitted into the fitting portion. The waterproof connector according to any one of claims 1 to 4,
The outer housing is arranged with the outer periphery being inserted through the housing member,
A waterproof connector, wherein a seal member that is in close contact with the outer housing and the housing member is disposed between the outer housing and the housing member. The waterproof connector according to claim 5,
The waterproof connector, wherein the seal member is formed integrally with the outer housing.

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