JP5388350B2 - Electrical connection terminal and connector using the same - Google Patents

Description

  The present invention relates to a terminal for electrical connection to which a wiring cable is connected and used by being fixed to a housing of a connector, and a connector using the same.

  Conventionally, as this type of electrical connection terminal, a bifurcated contact portion that sandwiches the counterpart terminal, a cover portion that covers the contact portion from both sides in the thickness direction, and a contact portion and a cover portion on one end side are provided. The other end side is provided with a terminal main body part to which a wiring cable is connected, and the other party terminal is inserted into the slit-like opening provided in the cover part, so that the other party terminal is connected to the contact part. Those are known (for example, see Patent Document 1). In this electrical connection terminal, excessive displacement of the contact portion is suppressed by restricting movement of the mating terminal held in the contact portion in the width direction at both ends of the opening of the cover portion.

JP 2003-45537 A

  By the way, the electrical connection terminal is formed by punching a metal plate and then bending the contact portion and the cover portion with respect to the terminal body portion. In this case, the contact portion is provided in an extending portion that extends to one side in the width direction of the terminal main body portion, and the extended portion is bent in the width direction of the terminal main body portion to be folded on the terminal main body portion. Further, the cover part is provided in another extension part extending from the front end side in the longitudinal direction of the terminal body part, and the extension part is folded in the longitudinal direction of the terminal body part and folded on the contact part. .

  However, since the contact portion and the cover portion are provided in separate extending portions and are bent in different directions (the width direction and the longitudinal direction of the terminal body portion), the positions of the contact portion and the cover portion For example, when the contact part is unevenly distributed in the width direction with respect to the cover part, when the mating terminal is connected to the contact part, the mating terminal is displaced by the positional deviation of the contact part. There is a problem in that the contact pressure with one end of the contact portion decreases or does not contact with one end of the opening portion, resulting in poor connection.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrical connection terminal capable of reducing the displacement in the width direction between the contact portion and the cover portion, and a connector using the same. Is to provide.

  In order to achieve the above object, the present invention is provided with a flat contact portion for holding the counterpart terminal, a cover portion for covering the contact portion from both sides in the thickness direction, and a contact portion and a cover portion on one end side. A terminal body portion to which an arbitrary connection object is connected on the end side, and the counterpart terminal is connected to the contact portion by inserting the counterpart terminal into a slit-like opening provided in the cover portion. In the electrical connection terminal, the terminal body portion is provided at one end side of the terminal main body portion so as to extend in the insertion / extraction direction of the mating terminal, a contact portion is formed at one end side, and a cover is provided between the contact portion and the terminal main body portion. A flat plate-like extension part in which a long hole to be an opening part of the cover part and the cover part is formed, the contact part is folded back to one end in the longitudinal direction of the extension part, and one end in the longitudinal direction of the extension part including the contact part By folding the longitudinal direction other end side of the extending portion from the longitudinal center of the elongated hole, to form a cover portion for covering the contact portions.

  As a result, the contact portion and the cover portion are provided in the extending portion, and are bent in the same direction (longitudinal direction of the extending portion), so that the contact portion and the cover portion are not displaced from each other in the width direction. Aligned.

  According to the electrical connection terminal of the present invention, since the contact portion and the cover portion can be formed by bending in the same direction, the contact portion and the cover portion can be aligned without causing any positional deviation in the width direction. Therefore, the contact portion is not unevenly distributed in the width direction with respect to the cover portion, and connection failure with the counterpart terminal can be effectively prevented.

The front side perspective view of the terminal for electrical connection which shows one Embodiment of this invention Rear perspective view of electrical connection terminal Plan view of terminal for electrical connection Side cross-sectional view of electrical connection terminal Perspective view of a metal plate forming an electrical connection terminal Partial perspective view which shows the manufacturing process of the terminal for electrical connection Partial perspective view which shows the manufacturing process of the terminal for electrical connection Partial perspective view which shows the manufacturing process of the terminal for electrical connection Perspective view of electrical connection terminal with wiring cable connected Perspective view of male connector and female connector Side cross-sectional view of male connector and female connector Partial plan view of the electrical connection terminal showing the connection state with the counterpart terminal

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  The electrical connection terminal 1 shown in FIG. 1 is provided with a flat contact portion 2 that sandwiches a counterpart terminal, a cover portion 3 that covers the contact portion 2, and a contact portion 2 and a cover portion 3 on one end side. A terminal main body 4 to which an arbitrary connection object is connected is provided on the end side.

  The contact portion 2 has a pair of elastic pieces 2a having a bifurcated shape, and a counterpart terminal is sandwiched by contact portions 2b that project from the distal ends of the elastic pieces 2a so as to face each other.

  The cover part 3 is formed so as to cover the contact part 2 from both sides in the thickness direction, and a slit-like opening 3a extending in the longitudinal direction from the upper surface to the lower surface is provided at the tip side. The opening 3a is formed to have a width that allows the mating terminal to be inserted, and each contact portion 2b of the contact portion 2 protrudes inside the opening 3a. The cover portion 3 is formed so as to have a predetermined distance between the upper surface and the lower surface of the contact portion 2, and the proximal end side of the contact portion 2 is contacted by the protrusions 3 b provided on the upper and lower surfaces of the cover portion 3. The movement in the vertical direction is restricted by the contact.

  The terminal body 4 includes first and second connection pieces 4 a and 4 b to which a connection object is connected, and the first and second connection pieces 4 a and 4 b are spaced from each other in the longitudinal direction of the terminal body 4. Is provided. In this case, the first connection piece 4a is disposed closer to one end side of the terminal body 4 than the second connection piece 4b, and a plurality of grooves 4c extending in the width direction are formed on the inner surface (upper surface) of the first connection piece 4a. Are spaced apart from each other in the longitudinal direction. One end side of the terminal body 4 is provided with a fixing piece 4d as a fixing portion for fixing the base end side of the cover portion 3, and the fixing piece portion 4c covers the upper side of the base end side of the cover portion 3. Is formed. Further, the fixed piece 4d is provided with a protrusion 4e that abuts on the upper surface of the cover 3, and the base end side of the cover 3 is restricted from moving upward by the abutment of the protrusion 4e.

  The electrical connection terminal 1 is made of a stamped flat metal plate and is formed by bending as described below. That is, the metal plate 1 ′ before bending shown in FIG. 5 has a flat plate-like extension portion 5 extending in the longitudinal direction from one end side of the terminal main body portion 4, and the cover portion 3 is formed by the extension portion 5. The The extended portion 5 is provided with a long hole 5 a that forms the opening 3 a of the cover portion 3, and a contact portion 2 is provided at one end of the extended portion 5.

  When this metal plate 1 'is bent, the contact portion 2 is folded back from the base end side to one end side of the extension portion 5 as shown in FIG. 6, and then the extension including the contact portion 2 as shown in FIG. One end side of the portion 5 is folded back from the longitudinal center of the long hole 5a to the other end side of the extending portion 5, and the fixed piece portion 4d is folded toward the proximal end side of the cover portion 3 as shown in FIG. 2 is formed. In this case, the contact part 2 and the cover part 3 are provided in the extension part 5 and are bent in the same direction (longitudinal direction of the extension part 5), so that the contact part 2 and the cover part 3 are in the width direction. Alignment is performed without causing misalignment.

  Further, as shown in FIG. 9, when connecting the wiring cable 7 as the connection object to the other end side of the terminal body portion 4, the leading end side of the covering 1a of the wiring cable 7 is removed to expose the conductive wire 1b. The first connecting piece 4a is bent to fix the lead wire 1b by caulking, and the second connecting piece 4b is bent to fix the covering 1a by caulking.

  The electrical connection terminal 1 configured as described above is used in the connector shown in FIGS. This connector includes a male connector 10 and a female connector 20, and a plurality of electrical connection terminals 1 are held in a housing 11 of the male connector 10. In this case, each terminal 1 is attached to the housing 11 by inserting each terminal 1 to which the wiring cable 7 is connected into the terminal hole 11 a from the back side of the housing 11. At that time, a locking portion 11b that can be locked to the fixed piece 4d of the terminal 1 is provided in the elastic piece 11c in the housing 11, and when the terminal 1 is inserted to a predetermined position in the housing 11, the terminal 1 is fixed. The piece 4d gets over the locking part 11b, and the locking part 11b is locked to the rear end of the fixed piece 4d, so that the terminal 1 is fixed in the housing 11 while being restricted from moving in the anti-insertion direction. The female connector 20 is provided with a plurality of mating terminals 21, and when the male connector 10 and the female connector 20 are fitted, each terminal 21 of the female connector 20 is connected to each terminal 1 of the male connector 10. Is connected. At that time, as shown in FIG. 12, the movement in the width direction of the counterpart terminal 21 sandwiched between the contact portions 2 of the terminals 1 is restricted at both ends of the opening 3 a of the cover portion 3. Excessive displacement of the elastic piece 2a is suppressed.

  Thus, according to the electrical connection terminal 1 of the present embodiment, the terminal main body 4 is provided on one end side so as to extend in the insertion / extraction direction of the mating terminal 21, and the contact portion 2 is formed on one end side. A flat plate-like extension portion 5 having a cover portion 3 and a long hole 5a serving as an opening portion 3a of the cover portion 3 between the contact portion 2 and the terminal main body portion 4, and at one end of the extension portion 5. The provided contact portion 2 is folded back to one end in the longitudinal direction of the extension portion 5, and one end in the longitudinal direction of the extension portion 5 including the contact portion 2 is extended from the longitudinal center of the elongated hole 5 a to the longitudinal direction of the extension portion 5, etc. Since the cover part 3 that covers the contact part 2 is formed by folding back to the end side, the contact part 2 and the cover part 3 are formed by bending each other in the same direction (longitudinal direction of the extension part 5). Can do. As a result, the contact portion 2 and the cover portion 3 can be aligned with each other without causing a positional shift in the width direction, so that the contact portion 2 is not unevenly distributed to the cover portion 3 in one width direction, Connection failure with the counterpart terminal 21 can be effectively prevented.

  Further, a fixed piece 4d for fixing the base end side of the cover 3 is provided on one end side of the terminal main body 4 and the base end side of the cover 3 is covered with the fixed piece 4d, whereby the extension portion 5 is folded back. Since the return to the direction opposite side is regulated, the extending portion 5 can be reliably held in the folded state, and the deformation of the cover portion 3 can be effectively prevented.

  Furthermore, since the cover part 3 is formed so as to have a predetermined interval between the upper surface and the lower surface of the contact part 2, each elastic piece part 2a of the contact part 2 does not contact the cover part 3, The elastic piece portion 2 a can be smoothly elastically deformed in the width direction of the contact portion 2.

  In this case, since the protrusions 3b that contact the base end side of the contact portion 2 from both sides in the thickness direction are provided on the upper surface and the lower surface of the cover portion 3, the vertical movement of the base end side of the contact portion 2 by each protrusion 3b. The contact portion 2 can be reliably held with a gap between the contact portion 2 and the cover portion 3. In addition, the protrusion 3b contacts the proximal end side of the contact portion 2, thereby shortening the energization path from the contact portion 2b of the contact portion 2 to the terminal body portion 4 as compared to the case where the protrusion 3b does not contact. The electrical resistance can be reduced accordingly.

  Further, when the terminal 1 is inserted to a predetermined position in the housing 11 of the male connector 10 to which the electrical connection terminal 1 is mounted, the terminal 1 is locked to the fixed piece 4d of the terminal 1 in the anti-insertion direction of the terminal 1. Since the locking portion 11b that restricts the movement of the terminal 11 is provided, the terminal 1 can be fixed to the housing 11 simply by inserting the terminal 1, and the mounting operation of the terminal 1 to the housing 11 can be performed very easily. . In this case, since the locking portion 11b of the housing 11 is locked to the fixing piece 4d for fixing the base end side of the cover portion 3, the terminal 1 is locked to the locking portion 11b of the housing 11. Therefore, it is not necessary to provide a dedicated locking portion for the purpose, and the structure of the terminal 1 can be simplified.

  DESCRIPTION OF SYMBOLS 1 ... Electric connection terminal, 2 ... Contact part, 3 ... Cover part, 3a ... Opening part, 3b ... Projection, 4 ... Terminal main-body part, 4d ... Fixed piece part, 5 ... Extension part, 5a ... Long hole, 10 ... male side connector, 11 ... housing, 11b ... locking part.

Claims (6)

A flat contact part that sandwiches the mating terminal, a cover part that covers the contact part from both sides in the thickness direction, a contact part and a cover part are provided on one end side, and an arbitrary connection object is connected to the other end side. In the terminal for electrical connection, which is configured to connect the counterpart terminal to the contact portion by inserting the counterpart terminal into the slit-shaped opening provided in the cover portion.
Provided on one end side of the terminal main body portion so as to extend in the insertion / extraction direction of the mating terminal, a contact portion is formed on one end side, and a cover portion and an opening portion of the cover portion between the contact portion and the terminal main body portion A plate-like extension part in which a long hole is formed,
The contact portion is folded back to one end side in the longitudinal direction of the extension portion, and one end side in the longitudinal direction of the extension portion including the contact portion is folded back from the longitudinal center of the elongated hole to the other end side in the longitudinal direction of the extension portion. A terminal for electrical connection, characterized in that a cover part is formed to cover the part. A fixing portion for fixing the base end side of the cover portion is provided on one end side of the terminal main body portion,
The electrical connection terminal according to claim 1, wherein the fixing portion is formed so as to restrict the return of the extension portion to the side opposite to the folding direction by covering the base end side of the cover portion. The electrical connection terminal according to claim 1, wherein the cover part is formed so as to have a predetermined distance between the upper surface and the lower surface of the contact part. The electrical connection terminal according to claim 3, wherein a protrusion that contacts the proximal end side of the contact portion from both sides in the thickness direction of the contact portion is provided on the proximal end side of the cover portion. A connector comprising the electrical connection terminal according to claim 1, 2, 3 or 4. A housing for holding the electrical connection terminal by inserting the electrical connection terminal from a predetermined direction;
The housing is provided with a locking portion that locks the electrical connection terminal in a predetermined position when the electrical connection terminal is inserted to a predetermined position and restricts the movement of the electrical connection terminal in the anti-insertion direction. The connector according to claim 5.

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