JP2015220124A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of reducing the number of components and holding waterproofness between a terminal and a housing.SOLUTION: Disclosed is a connector 1 including: a terminal 7 in which a wire connection part 5 connected to a terminal part of a wire 3 is provided; and a housing 11 in which the terminal 7 is housed by exposing an electric connection part 9 provided on the side opposite to the wire connection part 5 of this terminal 7 to the outside. In the terminal 7, a plurality of bent parts 13 are provided in at least a part of a portion housed between the wire connection part 5 and the electric connection part 9 in the housing 11, and the housing 11 is molded integrally with the terminal 7 so as to cover the bent parts 13.

Description

  The present invention relates to a connector having a waterproof function.

  Conventionally, as a connector, a terminal provided with a tongue-shaped terminal portion as a wire connecting portion connected to a terminal portion of an electric wire, and a circuit as an electric connecting portion provided on the opposite side of the tongue-shaped terminal portion of this terminal There is known a housing including a housing that exposes a connection portion to the outside and accommodates a terminal (see, for example, Patent Document 1).

  In this connector, a terminal seal ring is fitted to the outer periphery of the tongue-shaped terminal portion, and the terminal seal ring is disposed in close contact with the outer peripheral surface of the terminal and the inner peripheral surface of the housing. Waterproof between the two.

JP 2012-216336 A

  However, the connector as disclosed in Patent Document 1 requires a terminal seal ring as a seal member in order to ensure waterproofness between the terminal and the housing, and thus the number of parts is large.

  In order to reduce the sealing member that ensures the waterproofness between the terminal and the housing, it is conceivable to mold the housing integrally so as to accommodate the terminal inside.

  However, even if the terminal and the housing are integrally molded, it is difficult to ensure waterproofing between the terminal and the housing, and water or the like may enter the housing along the terminal from the terminal electrical connection side. There was a fear.

  Therefore, an object of the present invention is to provide a connector that can reduce the number of parts and can maintain waterproofness between a terminal and a housing.

  In the invention according to claim 1, the terminal provided with the wire connecting portion connected to the terminal portion of the electric wire and the electric connecting portion provided on the opposite side to the wire connecting portion of the terminal are exposed to the outside. A connector including a housing for accommodating a terminal, wherein the terminal is provided with a plurality of bent portions in at least a part of a portion accommodated in the housing between the electric wire connecting portion and the electric connecting portion. The housing is integrally formed with the terminal so as to cover the bent portion.

  In this connector, since the housing is integrally formed with the terminal so as to cover the bent portion, the path between the terminal and the housing can be complicated by the bent portion, and the housing along the electric connecting portion of the terminal. It is possible to prevent water and the like from entering the interior of the door.

  In addition, since the path between the terminal and the housing is bent by the bent portion, the water between the electrical connection portion side and the water which is going to go back to the electrical connection portion side is between Convection occurs, and pressure loss of water or the like trying to enter the inside of the housing increases, so that entry of water or the like can be reliably prevented.

  Therefore, in such a connector, even if the terminal and the housing are integrally formed, the bent portion can have a waterproof function, so that a seal member or the like is not required, the number of parts can be reduced, and the space between the terminal and the housing can be reduced. The waterproofness can be maintained.

  The invention according to claim 2 is the connector according to claim 1, wherein the bent portion is provided in a whole region in a circumferential direction of a portion connecting the electric wire connecting portion and the electric connecting portion. And

  In this connector, since the bent portion is provided in the entire area in the circumferential direction of the portion connecting the electric wire connecting portion and the electric connecting portion, water or the like that tries to enter the inside of the housing along the electric connecting portion of the terminal Regardless of which path is followed, the bent portion is present in all the paths in the circumferential direction of the terminal, and the waterproofness between the terminal and the housing can be reliably maintained.

  A third aspect of the present invention is the connector according to the first or second aspect, wherein the bent portion is provided between the bent portions bent in different directions adjacent to each other.

  In this connector, since a bent portion is provided between adjacent bent portions that are bent in different directions, a path that further increases pressure loss such as water is provided within the range where the bent portion of the terminal is provided. Thus, waterproofness between the terminal and the housing can be reliably maintained while suppressing an increase in size.

  A fourth aspect of the present invention is the connector according to any one of the first to third aspects, wherein the terminal is formed in a flat plate shape.

  In this connector, since the terminal is formed in a flat plate shape, even if water or the like tries to enter the inside of the housing along the plane of the terminal, it can be prevented that water or the like enters the bent portion. The waterproofness between the two can be maintained.

  According to the present invention, it is possible to provide a connector that can reduce the number of components and can maintain waterproofness between the terminal and the housing.

It is sectional drawing of the connector which concerns on 1st Embodiment of this invention. It is a perspective view of the terminal of the connector concerning a 1st embodiment of the present invention. It is a perspective view of the terminal of other examples of the connector concerning a 1st embodiment of the present invention. It is a perspective view when the electric wire and terminal of the connector which concern on 1st Embodiment of this invention are connected. It is a perspective view when a seal part is provided in the terminal part of the electric wire of the connector concerning a 1st embodiment of the present invention. 1 is a perspective view of a connector according to a first embodiment of the present invention. It is a perspective view when the shield shell is assembled | attached to the connector which concerns on 1st Embodiment of this invention. It is sectional drawing of the connector which concerns on 2nd Embodiment of this invention. (A) is a perspective view of the terminal of the connector concerning a 2nd embodiment of the present invention. (B) is a principal part enlarged view of Fig.9 (a). (A) is a perspective view of the base material of the terminal of the other example of the connector concerning a 2nd embodiment of the present invention. (B) is a perspective view when the notch is provided in the base material of the terminal of the other example of the connector which concerns on 2nd Embodiment of this invention. (A) is a perspective view of the terminal of the other examples of the connector concerning a 2nd embodiment of the present invention. (B) is sectional drawing of the terminal of the other example of the connector which concerns on 2nd Embodiment of this invention. It is a perspective view of the terminal of the connector concerning a 3rd embodiment of the present invention. (A) is sectional drawing of the terminal of the connector which concerns on 3rd Embodiment of this invention. (B) is a principal part enlarged view of Fig.13 (a).

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

(First embodiment)
The first embodiment will be described with reference to FIGS.

  The connector 1 according to the present embodiment includes a terminal 7 provided with an electric wire connection portion 5 connected to the terminal portion of the electric wire 3, and an electric connection portion 9 provided on the opposite side of the electric wire connection portion 5 of the terminal 7. And a housing 11 that accommodates the terminal 7.

  The terminal 7 is provided with a plurality of bent portions 13 in at least a part of the portion accommodated in the housing 11 between the electric wire connecting portion 5 and the electric connecting portion 9, and the housing 11 covers the bent portion 13. Are integrally formed with the terminal 7.

  Further, the bent portion 13 is provided in the entire region in the circumferential direction of the portion connecting the electric wire connecting portion 5 and the electric connecting portion 9.

  Furthermore, the terminal is formed in a flat plate shape.

  Here, the connector 1 is assembled to a casing (not shown) that accommodates equipment and the like, the terminal 7 is electrically connected to the equipment and the like accommodated inside the casing, and the electric wire 3 is drawn from the casing. To do.

  By covering the outer periphery of the electric wire 3 drawn out from the casing with a shield shell 15 or a shield member (not shown), intrusion or leakage of noise or the like can be prevented. Hereinafter, such a connector 1 will be described.

  As shown in FIGS. 1 to 7, the connector 1 includes an electric wire 3, a terminal 7, a housing 11, a shield shell 15, and the like.

  The electric wire 3 is a covered electric wire in which the outer periphery of a conductor portion made of a conductive material is covered with an insulating coating, and one end side is drawn out of the housing 11 and is electrically connected to a power source, equipment, or the like.

  The electric wire 3 can prevent intrusion and leakage of noise and the like by covering the outer circumference drawn from the housing 11 with a shield member (not shown) made of a conductive material such as a braid or a metal stay. A terminal 7 is provided on the other end side of the electric wire 3.

  The terminal 7 is made of a conductive material and is formed in a thin plate shape. The terminal 7 is provided with an electric wire connection portion 5 on one end side, and an electric connection portion 9 is provided on the other end side.

  The wire connection portion 5 is electrically connected to the conductor portion exposed to the outside by welding or the like after the insulation coating is peeled off at the end portion of the wire 3. A seal portion 17 made of an elastomer or the like is integrally formed on the outer periphery of the wire connection portion 5 so that the end portion of the wire 3 is waterproof.

  In addition, the waterproofing of the terminal part side of the electric wire 3 does not need to integrally form the seal part 17, for example, on a separate sealing member assembled to the terminal part of the electric wire 3 or on the drawing side of the electric wire 3 of the housing 11. A rear holder or the like to be assembled may be used.

  The electrical connection portion 9 is provided on the side opposite to the wire connection portion 5 and is disposed so as to be exposed to the outside of the housing 11. The electrical connection portion 9 is disposed inside the casing by assembling the housing 11 to a casing (not shown), and is electrically connected to a device or the like housed in the casing.

  The housing 11 is made of an insulating material such as synthetic resin or elastomer, and is integrally formed so that the electrical connection portion 9 of the terminal 7 is exposed to the outside and the other portion of the terminal 7 is accommodated inside.

  A flange portion 19 for fixing to the casing is formed on the outer periphery of the housing 11, and a seal member 21 such as packing is disposed on a portion of the flange portion 19 that comes into contact with the casing. Waterproof. A shield shell 15 is disposed on the outer periphery of the flange portion 19.

  The shield shell 15 is made of a conductive material, is formed in an annular shape, and is fitted to the outer periphery of the flange portion 19. A shield member is electrically connected to the shield shell 15 by a caulking ring (not shown) or the like.

  Such a shield shell 15 is fixed to a casing via a fixing means (not shown) such as a bolt on a plurality of fixing portions 23 formed of holes, thereby forming a shield circuit, which is drawn out of the housing 11. Intrusion and leakage of noise and the like to the electric wire 3 are prevented.

  In such a connector 1, since the terminal 7 is molded in the housing 11 so that the electrical connection portion 9 is exposed to the outside of the housing 11, the electrical connection portion 9 is electrically connected between the terminal 7 and the housing 11. There is a risk that water or the like may enter along the connection portion 9. In addition, since the terminal 7 is formed in a flat plate shape, water or the like easily enters along the plane. Therefore, the terminal 7 is provided with a plurality of bent portions 13.

  The plurality of bent portions 13 are provided a plurality of times in different directions in the thickness direction of the terminal 7 (vertical direction in FIG. 1) between the electric wire connecting portion 5 and the electric connecting portion 9. It becomes each corner of the uneven part formed continuously by being bent.

  In addition, corner portions located on both sides of the terminal 7 in the width direction are also a plurality of bent portions 13. For this reason, the some bending part 13 is provided in the whole area of the circumferential direction of the part which connects the electric wire connection part 5 and the electrical connection part 9. FIG.

  By providing the plurality of bent portions 13 on the terminals 7 in this way, when the housing 11 is formed, the material of the housing 11 flows into the concave and convex portions so as to cover the bent portions 13, and the housing 11 is formed. In this state, a complicated labyrinth shape is formed between the terminal 7 and the housing 11.

  For this reason, a path through which water or the like enters between the terminal 7 and the housing 11 becomes very long, and water or the like hardly enters the inside of the housing 11 along the surface of the terminal 7.

  Here, in the path where water or the like enters between the terminal 7 and the housing 11, the path is bent at a substantially right angle at the portion where the bent portion 13 is located. In this part, the water which is going to go back from the electrical connection part 9 side and the water which goes to the back from the electrical connection part 9 side to some extent but is going to return to the electrical connection part 9 side by the bent part 13 arranged in the back. Convection occurs between them.

  For this reason, in the portion where the bent portion 13 is located in the path through which water or the like between the terminal 7 and the housing 11 enters, pressure loss of water or the like trying to enter the inside of the housing 11 increases, and water or the like enters. Can be prevented.

  In addition, since a plurality of bent portions 13 that increase the pressure loss of water or the like that tends to enter the inside of the housing 11 are provided between the electric wire connecting portion 5 and the electric connecting portion 9, water or the like Can be reliably prevented.

  Therefore, even if the terminal 7 and the housing 11 are integrally formed, the waterproofness between the terminal 7 and the housing 11 can be maintained, the sealing member between the terminal 7 and the housing 11 can be reduced, and the number of parts can be reduced. And assembly man-hours can be reduced.

  The shape of the bent portion 13 is not limited to the corners of the concavo-convex portion formed by repeating substantially right-angled bending as shown in FIG. 2, but is formed by repeating acute bending as shown in FIG. It may be a bent portion 13a which is a corner portion of the uneven portion to be formed.

  In the assembling method of the connector 1 configured as described above, first, the electric wire 3 and the terminal 7 are electrically connected, and then the seal portion 17 is integrally formed at the terminal portion of the electric wire 3. The seal portion 17 provides waterproofing between the terminal portion of the electric wire 3 and the terminal 7.

  Next, the electrical connection portion 9 is exposed to the outside, and the housing 11 is molded so as to accommodate the terminal 7 therein. By molding the housing 11, the space between the terminal 7 and the housing 11 is waterproofed.

  Then, the seal member 21 is assembled to the flange portion 19 of the housing 11, the shield shell 15 is fitted to the outer periphery of the flange portion 19, and the assembly of the connector 1 is completed.

  In such a connector 1, since the housing 11 is integrally formed with the terminal 7 so as to cover the bent portion 13, the path between the terminal 7 and the housing 11 can be complicated by the bent portion 13. Water or the like can be prevented from entering the inside of the housing 11 along the electrical connection portion 9 of the terminal 7.

  Further, since the path between the terminal 7 and the housing 11 is bent by the bent portion 13, water or the like that is going to go deeper from the electric connection portion 9 side and water that is going to return to the electric connection portion 9 side. As a result, convection occurs between them and the pressure loss of water or the like that tries to enter the inside of the housing 11 increases, and entry of water or the like can be reliably prevented.

  Therefore, in such a connector 1, even if the terminal 7 and the housing 11 are integrally formed, the bent portion 13 can have a waterproof function. Therefore, a sealing member or the like is not required, and the number of parts can be reduced. The waterproofness between the housing 11 and the housing 11 can be maintained.

  Further, since the bent portion 13 is provided in the entire region in the circumferential direction of the portion connecting the electric wire connecting portion 5 and the electric connecting portion 9, the bent portion 13 will enter the inside of the housing 11 along the electric connecting portion 9 of the terminal 7. No matter which path the water or the like takes, the bent portion 13 exists in all the paths in the circumferential direction of the terminal 7, and the waterproofness between the terminal 7 and the housing 11 can be reliably maintained. .

  Further, since the terminal 7 is formed in a flat plate shape, even when water or the like tries to enter the inside of the housing 11 along the plane of the terminal 7, it is possible to prevent water or the like from entering by the bent portion 13. The waterproof property between the housing 7 and the housing 11 can be maintained.

(Second Embodiment)
The second embodiment will be described with reference to FIGS.

  In the connector 101 according to the present embodiment, the bent portion 103 is provided in the entire region in the circumferential direction of the portion connecting the electric wire connecting portion 5 and the electric connecting portion 9.

  The same components as those of the first embodiment are denoted by the same reference numerals, and the description of the configuration and functions will be omitted with reference to the first embodiment. However, the configuration is the same as that of the first embodiment. The effect achieved is the same.

  As shown in FIGS. 8 and 9, a plurality of the bent portions 103 are provided between the electric wire connecting portion 5 and the electric connecting portion 9 in a portion arranged inside the housing 11.

  The plurality of bent portions 103 are arranged at equal intervals along the length direction of the terminal 7 and are respectively provided at the corners of the plurality of concave portions and the plurality of convex portions that are continuously provided over the entire circumference of the terminal 7. It is a corner.

  For this reason, the some bending part 103 is provided in the whole area of the circumferential direction of the part which connects the electric wire connection part 5 and the electrical connection part 9. FIG.

  Here, inside the concave portion provided with the bent portion 103 is a curved surface portion 105 in which both side surfaces of the terminal 7 are formed into a curved shape by R processing or the like. By providing the curved surface portion 105 in this way, when the housing 11 is molded, the material of the housing 11 easily flows into the recess, and the moldability of the housing 11 can be improved.

  Here, the thickness of the terminal 7 as shown in FIG. 11 is not limited to the corners of the uniform concave portions and the bent portions 103 that are the corners of the convex portions provided over the entire circumference of the terminals 7 as shown in FIG. Corners of the recesses and the corners of the projections formed on the respective surfaces in the direction, and the corners of the notches cut out on both sides in the width direction of the terminal 7 at the positions where the recesses and the projections are provided And a bent portion 103a which is a corner portion.

  As shown in FIGS. 10 and 11, the concave portion, the convex portion, and the notch portion provided with the bent portion 103 a are formed with a plurality of notches on both side surfaces when punching the thin plate-like base material of the terminal 7. By providing, pressing or bending, the front and back surfaces of the terminal 7 are formed with irregularities.

  As described above, by providing the bent portions 103 and 103a in the entire region in the circumferential direction of the terminal 7, in the path where water or the like enters between the terminal 7 and the housing 11 in a state where the housing 11 is molded, The bent portions 103 and 103a exist in any path in the circumferential direction.

  For this reason, no matter what path water or the like trying to enter the inside of the housing 11 along the electrical connection portion 9 of the terminal 7 follows, the bent portions 103, 103 a cause all the paths in the circumferential direction of the terminal 7. Pressure loss of water and the like can be increased, and entry of water and the like can be reliably prevented.

  In such a connector 101, since the bent portion 103 is provided in the entire region in the circumferential direction of the portion connecting the electric wire connecting portion 5 and the electric connecting portion 9, the housing 11 extends along the electric connecting portion 9 of the terminal 7. The bent portion 103 exists in all the paths in the circumferential direction of the terminal 7 regardless of the path of water or the like trying to enter the interior of the terminal 7, so that the waterproof property between the terminal 7 and the housing 11 is ensured. Can be held.

(Third embodiment)
A third embodiment will be described with reference to FIGS.

  In the connector according to the present embodiment, a bent portion 201 is provided between the bent portions 201 and 201 that are bent in different adjacent directions.

  The same components as those of the first embodiment are denoted by the same reference numerals, and the description of the configuration and functions will be omitted with reference to the first embodiment. However, the configuration is the same as that of the first embodiment. The effect achieved is the same.

  As shown in FIGS. 12 and 13, a plurality of bent portions 201 are provided in a portion disposed inside the housing 11 between the electric wire connecting portion 5 and the electric connecting portion 9.

  The plurality of bent portions 201 include corners and corners of two concave portions formed on the respective surfaces in the thickness direction of the terminal 7 and both sides in the width direction of the terminal 7 at positions where the two concave portions are provided. It becomes the corner part and corner part of the notch part notched by.

  For this reason, the some bending part 201 is provided in the whole area of the circumferential direction of the part which connects the electric wire connection part 5 and the electrical connection part 9. FIG.

  Between the bent portions 201a and 201b which are bent in different directions which are corners and corners of the concave portion among the plurality of bent portions 201, bent portions 201c and 201c which are bent in steps are provided. . The bent portions 201c and 201c are corners and corners of the recess formed on the bottom side of the recess.

  Thus, by providing the bent part 201c between the bent parts 201a and 201b bent in different directions adjacent to each other, the number of concave and convex parts formed on the terminal 7 can be reduced like two concave parts formed on the terminal 7. At least, a plurality of bent portions 201 can exist in a path through which water or the like between the terminal 7 and the housing 11 enters, and the space of the terminal 7 can be saved.

  In such a connector, since the bent portion 201 is provided between the bent portions 201 and 201 which are bent in different directions adjacent to each other, pressure such as water is further increased within the range where the bent portion 201 of the terminal 7 is provided. A path for increasing the loss can be provided, and waterproofness between the terminal 7 and the housing 11 can be reliably maintained while suppressing an increase in size.

  In the connector according to the embodiment of the present invention, the concavo-convex portion provided with the bent portion is composed of a plurality of protrusions and a plurality of groove portions. May be composed of a plurality of convex portions and a plurality of discontinuous concave portions, and the shape of the concavo-convex portion may be any shape as long as the path between the terminal and the housing can be complicated. Also good.

  In addition, two concave portions provided with bent portions between adjacent bent portions that are bent in different directions are provided in the length direction of the terminal. However, the present invention is not limited to this. Two or more may be provided.

  Furthermore, although the terminal is formed in a flat plate shape, the shape is not limited thereto, and may be any shape such as a columnar shape or a prismatic shape.

DESCRIPTION OF SYMBOLS 1,101 ... Connector 3 ... Electric wire 5 ... Electric wire connection part 7 ... Terminal 9 ... Electric connection part 11 ... Housing 13, 13a, 103, 103a, 201, 201a, 201b, 201c ... Bending part

Claims (4)

A terminal provided with a wire connecting portion to be connected to the terminal portion of the electric wire, and a housing for accommodating the terminal by exposing an electric connecting portion provided on the opposite side of the terminal to the wire connecting portion. Connector,
The terminal is provided with a plurality of bent portions in at least a part of a portion accommodated in the housing between the electric wire connecting portion and the electric connecting portion,
The connector, wherein the housing is integrally formed with the terminal so as to cover the bent portion. The connector according to claim 1,
The said bending part is provided in the whole region of the circumferential direction of the part which connects the said electric wire connection part and the said electric connection part, The connector characterized by the above-mentioned. The connector according to claim 1 or 2,
The connector, wherein the bent portion is provided between the bent portions bent in different directions adjacent to each other. The connector according to any one of claims 1 to 3,
The said terminal is formed in flat form, The connector characterized by the above-mentioned.

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