JP5841376B2 - Female terminal - Google Patents

Description

  The present invention relates to a female terminal into which a male terminal is fitted.

  Conventionally, a rectangular tube shaped socket part formed by punching and bending a metal plate is provided, and a part of the side wall of the socket part is bent inward, and the male terminal inserted into the socket part is inserted into the socket part. A female terminal having a contact spring that presses against a contact on an inner wall is known. Among them, the female terminal of Patent Document 1 is said to be able to protect the contact spring at a minimum while reducing the outer dimension.

JP 2006-54166 A

  In order to expand the use of the female terminal described above, it is necessary not only to reduce the size, but also to ensure reliability under more severe conditions, for example, an environment where vibration applied to the terminal is large. However, particularly in the case of a very small female terminal of several mm square or less, since the thickness of the metal plate constituting the terminal is as thin as 1 mm or less, it is possible to sufficiently obtain the contact load of the contact spring that presses the male terminal. difficult. If it does so, there exists a possibility that the contact pressure of the male-type terminal and contact sufficient under severe conditions cannot be ensured stably.

  The present invention has been made based on such a problem, and an object of the present invention is to provide a female terminal that is small and can secure a predetermined contact pressure.

In order to achieve the object of the present invention, the inventors observed the behavior of the contact spring when a male terminal was inserted into the socket part. As a result, as will be described in detail later, it was confirmed that the contact pressure was lower than the design value because the contact spring shifted from a predetermined position in the axial direction of the socket portion.
Here, since the contact spring is continuous with the side wall constituting the socket portion, the position of the side wall is also shifted when the position of the contact spring is shifted. Therefore, for example, it is conceivable to fit a member that mechanically restrains the displacement of the side wall to the outer periphery of the socket portion. However, this increases the external dimensions of the terminal and cannot be tolerated.

The female terminal of the present invention made there has a substantially square cylindrical side wall including a joint portion between one end edge of the metal plate and the inner surface of the metal plate, and a socket portion into which the male terminal is inserted from the front. The socket portion includes a contact point, a contact spring, and a displacement restricting portion.
The contact is provided on the side wall and is electrically connected to the male terminal.
The contact spring extends from the support end supported on the front end side of the side wall toward the rear in the axial direction of the socket portion, and presses the male terminal toward the contact point at a pressing portion spaced in the axial direction from the support end. Each of the springs includes a first spring part and a second spring part in which directions of the respective bending easiness are substantially orthogonal.
When the male terminal is inserted into the socket part from the front, the displacement restricting part includes a first side wall and a second side wall located on both sides of the joint part by a force acting on the contact spring from the contact point toward the pressing part. Is to restrict relative displacement.
Direction of the force acting on the contact spring, as a direction from the lower side to the upper side, the displacement restricting portion is positioned in the vicinity of the support end of the first side wall, a positioning projection which projects from a edge of the first side wall And a positioning hole formed in the second side wall with a dimension larger than the dimension of the positioning protrusion in the front-rear direction and the vertical direction and into which the positioning protrusion is inserted.
The front surface of the positioning projection and the front end edge of the positioning hole are abutted, and the upper surface of the positioning projection and the upper end edge of the positioning hole are abutted, so that the male terminal has not yet been inserted into the socket portion. The relative displacement between the first side wall and the second side wall is restricted since there is no time.

  As a form of the contact spring that can be adopted, the support ends of the first spring portion and the second spring portion are independently supported by the side walls, and the tips of the first spring portion and the second spring portion are continuous with each other. A mode in which a gap is formed between the two spring portions can be exemplified. Such a contact spring can be formed by cutting and bending a part of the metal plate constituting the side wall. This contact spring is formed in a substantially L-shaped cross-section following the cross-sectional shape of adjacent partial side walls when the rectangular tubular side wall is divided into four partial side walls. Since the first spring portion is located on one of the adjacent partial side walls and the second spring portion is located on the other side, the direction of the ease of bending of each of the first spring portion and the second spring portion is substantially orthogonal. .

When the male terminal is inserted into the socket portion, the pressing portion of the contact spring is expanded against the contact point, and in detail, as described in the section of the “DETAILED DESCRIPTION” section, the pressing portion extends to the support end. Due to the force toward the contact spring, the contact spring is displaced from the contact point, and a predetermined contact pressure cannot be obtained.
In view of this, the present invention provides a displacement restricting portion to suppress the contact spring from deviating from a design position that achieves a predetermined contact pressure at the contact point, thereby ensuring the predetermined contact pressure.

It is preferable that the socket part in this invention is further provided with the displacement control part which controls the relative displacement of the 1st side wall and the 2nd side wall when a contact spring tries to bend in the direction which a joint part leaves | separates.
When the male terminal is inserted into the socket part, the contact spring tends to bend in the direction in which the splicing part is separated (the direction in which the angle formed by the first spring part and the second spring part becomes obtuse). By providing the displacement restricting portion corresponding to the above, it is possible to suppress the contact spring from shifting from the design position and to ensure a predetermined contact pressure.

  The displacement restricting portion in the present invention may be in any form as long as the object can be achieved. For example, for positioning the first side wall and the second side wall, a positioning projection may be provided on one of the first side wall and the second side wall, and a positioning hole into which the positioning projection is inserted may be provided on the other side. These positioning holes and positioning projections can be suitably used for the displacement restricting portion. That is, since the displacement restricting portion can be configured by abutting the positioning protrusion against the edge of the positioning hole, the displacement restricting portion can be provided without adding a separate configuration to the side wall.

The displacement restricting portion in the present invention is preferably configured by abutting a first locking surface formed on the first side wall and a second locking surface formed on the second side wall.
Since the surfaces of the first locking surface and the second locking surface are abutted without any gap, a large contact area between these surfaces can be secured, so that the relative displacement between the first side wall and the second side wall is ensured. Can be reliably regulated. In addition, since the surfaces are abutted with each other, the effect of displacement restriction can be obtained regardless of the dimensional accuracy.
The first locking surface and the second locking surface can be configured as, for example, the outer surface of the positioning protrusion described above and the inner wall of the positioning hole.

  ADVANTAGE OF THE INVENTION According to this invention, the female terminal which can ensure a predetermined contact pressure although being small can be provided.

It is a perspective view when the female terminal which concerns on embodiment of this invention is seen from the insertion port side. It is a perspective view which shows the side wall abutting part of the socket part of a female terminal. (A) is a figure which shows the state by which protrusion was abutted by the hole. (B) is a figure which shows the protrusion for positioning, and the hole for positioning. (A) is an end view on the insertion port side of the female terminal. (B) is the sectional view on the 4B-4B line of (A). (A) is a side view of a female terminal. (B) is the 5B-5B sectional view taken on the line of (A). (C) is the 5C-5C sectional view taken on the line of (A). (D) is the 5D-5D sectional view taken on the line of (A). It is sectional drawing which shows the state by which the male terminal was inserted in the socket part of the female terminal. It is a figure for demonstrating the malfunction which arises by the clearance gap between protrusion and a hole. It is a modification of the present invention and is a diagram showing protrusions and holes. It is a figure which shows the protrusion and hole which concern on the modification of this invention. It is a figure which shows the 1st engaging part and 2nd engaging part which concern on the modification of this invention.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
The female terminal 1 shown in FIGS. 1 and 2 is formed by stamping and bending a thin metal plate. This female terminal 1 has a socket part 12 having a rectangular tube-like side wall into which the male terminal 7 (FIG. 6) is inserted, and a U-shaped cross section continuous to the socket part 12 and to which an unillustrated electric wire is crimped. A crimping part 13 and a flat carrier part 14 provided on the wire drawing side of the crimping part 13 are provided. A large number of female terminals 1 are typically held in a housing (not shown) to form a multipolar connector.
In the following description, regarding the female terminal 1, the side on which the socket portion 12 is provided is defined as “front”, and the side on which the carrier portion 14 is provided is defined as “rear”.

The socket portion 12 includes a rectangular insertion slot 11 into which the male terminal 7 is inserted, a contact 15 (FIGS. 2 and 4) that establishes conduction with the male terminal 7, and a contact spring 30 that will be described in detail later. Have.
The socket portion 12 is surrounded by side walls 21 to 24 (partial side walls) that form square tubular side walls, and includes an insertion space 120 (FIG. 2) into which the male terminal 7 is inserted. The insertion port 11 is used. One side of the insertion slot 11 is 1 mm, for example. As shown in FIGS. 2 and 4, the contact 15 that protrudes toward the insertion space 120 is formed at the approximate center of the side wall 23 in the axial direction.

  The socket part 12 is formed by bending a metal plate punched into a predetermined shape along a ridge line L of a square tube and joining them together via a joining part 29 (FIG. 2). It has four side walls 21 to 24 extending along the following (sometimes simply referred to as an axial direction). The side wall 21 and the side wall 23 face each other, and the side wall 22 and the side wall 24 face each other. A side wall 21 (first side wall) and a side wall 24 (second side wall) are located on both sides of the joining portion 29. An end edge 21 </ b> A along the longitudinal direction of the side wall 21 is abutted against the inner surface of the side wall 24, and this portion serves as a joining portion 29.

The socket portion 12 has a support wall 16 that is overlapped with the outer peripheral surface of the side wall 21 and supports the side wall 21. The support wall 16 is long along the axial direction of the socket portion 12, and the notches 162 and 163 formed at different positions in the longitudinal direction respectively engage with the locking protrusions 17 and 19 toward the out-of-plane direction of the support wall 16. Is protruding. These locking projections 17 and 19 are provided on the front end 121 and the rear end 122 of the socket part 12 respectively, and are locked by a housing (not shown). The locking protrusions 17 and 19 are formed by bending a protruding piece protruding from the edge 24A (FIG. 1) of the side wall 24 toward the side wall 21.
The notch 162 of the support wall 16 is formed from the front end of the support wall 16 to substantially the center in the longitudinal direction, and an opening 164 is formed next to the locking projection 17. In addition, a protruding portion 161 (FIG. 2) that protrudes in the width direction of the support wall 16 and is bent toward the side wall 22 is formed at the end portion on the side wall 22 side of the support wall 16.

  The side wall 24 is formed with a front positioning hole 241 and a rear positioning hole 242 both having a rectangular opening shape and penetrating the side wall 24 in the thickness direction. The front positioning hole 241 and the rear positioning hole 242 are formed at positions corresponding to the locking protrusions 17 and 19 and have long sides along the axial direction. The front positioning hole 241 is located on the front end side with respect to a support end 30A of the contact spring 30 described later, and the rear positioning hole 242 passes the contact spring 30 on the rear end side (viewed from the support end 30A when viewed from the support end 30A). Position).

As shown in FIG. 3, the front positioning hole 241 has a front end edge 241A and a rear end edge 241C orthogonal to the axial direction of the socket part 12, and an upper end edge 241B and a lower end edge 241D along the axial direction. . For convenience of explanation, “upper” and “lower” are referred to with reference to the upper side and the lower side in FIG.
Similar to the front positioning hole 241, the rear positioning hole 242 has a front end edge 242A and a rear end edge 242C, and an upper end edge 242B and a lower end edge 242D.

On the other hand, the end 21A of the side wall 21 protrudes along the surface of the side wall 21, and is inserted into the front positioning hole 241 and the rear positioning pre-positioning hole 241, respectively. A rear positioning protrusion 212 is formed.
As shown in FIG. 3, the front positioning protrusion 211 has a front surface 211A and a rear surface 211C orthogonal to the axial direction of the socket portion 12, and an upper surface 211B and a lower surface 211D along the axial direction. Similarly, the rear positioning protrusion 212 has a front surface 212A and a rear surface 212C, and an upper surface 212B and a lower surface 212D.

As shown in FIG. 3A, the vertical and horizontal dimensions and the opening area of the front positioning hole 241 are set slightly larger than the vertical and horizontal dimensions and the cross-sectional area of the front positioning protrusion 211. The front surface 211A of the front positioning protrusion 211 is abutted along the front edge 241A of the front positioning hole 241. Since the front surface 211A is abutted against the front end edge 241A in this way, the displacement of the front positioning projection 211 toward the front side from the front end edge 241A is restricted, so the abutting portion between the front end edge 241A and the front surface 211A is A displacement restricting portion 25 to the front side of the front positioning projection 211 is configured. In the displacement restricting portion 25, the front surface 211A (first locking surface) and the inner wall (second locking surface) of the front edge 241A are abutted.
Further, the upper surface 211 </ b> B of the front positioning protrusion 211 is also abutted along the upper end edge 241 </ b> B of the front positioning hole 241. Since the upper surface 211B is abutted against the upper end edge 241B in this way, the displacement of the front positioning protrusion 211 above the upper end edge 241B is restricted, so the abutting portion between the upper end edge 241B and the upper surface 211B is The displacement restricting portion 27 to the upper side of the front positioning projection 211 is configured. In the displacement restricting portion 27, the upper surface 211B (first locking surface) and the inner wall (second locking surface) of the upper end edge 241B are abutted.

  Note that the front surface 211A is “abutted against” the front end edge 241A may simply be in contact with the front surface 211A and the front end edge 241A without any load, or may be in contact with the front end edge 241A. Good. The same applies to the upper surface 211B and the upper edge 241B.

  On the other hand, gaps S1 and S2 are vacant between the rear edge 241C and the rear surface 211C and between the lower edge 241D and the lower surface 211D, respectively. However, the gaps S1 and S2 as in the present embodiment are not essential.

  As shown in FIG. 3B, the vertical and horizontal dimensions and the opening area of the rear positioning hole 242 are set larger than the vertical and horizontal dimensions and the cross-sectional area of the rear positioning protrusion 212. The end edges 242A to 242D of the rear positioning hole 242 and the surfaces 212A to 212D of the rear positioning protrusion 212 are not abutted, and a gap S is formed between them. However, this is merely an example, and it is not limited whether the rear positioning hole 242 and the rear positioning protrusion 212 are abutted or have a gap therebetween. The rear positioning hole 242 and the rear positioning protrusion 212 may have a portion where the front positioning hole 241 and the front positioning protrusion 211 are abutted and a portion where a gap is left.

Next, the contact spring 30 will be described with reference to FIGS.
The contact spring 30 ensures conduction between the female terminal 1 and the male terminal 7 by pressing the male terminal 7 inserted into the socket portion 12 toward the contact 15. The contact spring 30 is formed by cutting out and bending a part of a metal plate constituting the side walls 21 and 22 of the socket portion 12. By using a part of the metal plate constituting the side walls 21 and 22 as the contact spring 30 in this way, the size of the female terminal 1 is reduced.
The front end part 121 of the socket part 12 has a column 123 having an L-shaped cross section along the side walls 21 and 22. Since the column 123 is reinforced by the support wall 16, the contact spring 30 is stably supported by the column 123 in a cantilever manner.

  The contact spring 30 extends from a support end 30 </ b> A provided on the front end side to a tip 30 </ b> B located substantially at the center in the axial direction of the socket portion 12. The contact spring 30 includes a first spring portion 31 and a second spring portion 32 that are arranged side by side substantially along the axial direction of the socket portion 12. The first spring portion 31 is continuous with the portion of the side wall 21 in the column 123, and the second spring portion 32 is continuous with the portion of the side wall 22 in the column 123. The first and second spring portions 31 and 32 are continuous with each other at the tip 30 </ b> B of the contact spring 30. A gap P separating the first spring portion 31 and the second spring portion 32 is provided between the support end 30A and the tip 30B (FIGS. 4B and 5C).

The 1st spring part 31 inclines so that it may approach the side wall 23 gradually as it goes to the front-end | tip 30B side from the support end 30A side. A pressing portion 18 that protrudes toward the contact 15 is formed in the vicinity of the tip 30 </ b> B of the first spring portion 31. The pressing portion 18 presses the male terminal 7 toward the contact 15 due to a contact load generated in the contact spring 30 when the male terminal 7 is inserted between the pressing portion 18 and the contact 15. In addition, as long as the press part 18 can implement | achieve the function, there is no restriction | limiting in a shape. The same applies to the contact 15.
The dimension of the first spring part 31 will be described using the vertical and horizontal directions in FIG. 4A. The vertical dimension (thickness) of the first spring part 31 is smaller than the horizontal dimension (width). . Therefore, the main bending direction (direction of ease of bending) of the first spring portion 31 corresponds to the vertical direction of FIG.

The second spring portion 32 is also slightly inclined so as to gradually approach the side wall 24 from the support end 30A side toward the tip end 30B side. As shown in FIG. 2, a protruding portion 231 that is bent toward the second spring portion 32 is formed at the end of the side wall 23 on the side wall 22 side.
According to the vertical and horizontal directions in FIG. 4A, the second spring portion 32 has a horizontal dimension (thickness) smaller than a vertical dimension (width). Therefore, the main bending direction (direction of ease of bending) of the second spring portion 32 is orthogonal to the main bending direction of the first spring portion 31, and corresponds to the left-right direction in FIG. From the main bending directions of the first and second spring portions 31 and 32 as described above, the second spring portion 32 has a relatively large force for pressing the male terminal 7 toward the contact 15.

The crimping part 13 has a wire barrel 131 to which the core wire of the electric wire is crimped and an insulation barrel 132 to which the covering part of the electric wire is crimped. The wire barrel 131 has a pair of winding portions 131A wound around the core wire. The insulation barrel 132 also has a pair of winding portions 132A wound around the covering portion.
The carrier part 14 is used for conveyance at the time of manufacture of the female terminal 1, and is removed from the crimping part 13 when unnecessary.

  As shown in FIG. 6, the male terminal 7 inserted into the socket 12 of the female terminal 1 is continuous with the metal elongated plate-like contact portion 71 and the contact portion 71, and is connected to a circuit board (not shown). And a mounting portion 72 to be connected. The male terminal 7 is held by a housing (not shown).

  In the production of the female terminal 1, a press machine is used to punch out a metal plate so that the front positioning projection 211 and the front positioning hole 241 have a size to be abutted as described above. A plate material is formed. And this board | plate material for terminals is bent along the ridgeline L, and the approximate shape of the socket part 12 is shape | molded.

  Next, the rectangular cylindrical socket portion 12 is formed by bending the side wall 24 so that the end edge 21 </ b> A of the side wall 21 abuts against the side wall 24. At that time, as shown in FIG. 3, the front positioning protrusion 211 is inserted into the front positioning hole 241, and the rear positioning protrusion 212 is inserted into the rear positioning hole 242, thereby positioning the side wall 21 with respect to the side wall 24. Thereby, the relative positions of the side walls 21 to 24 are determined. At this time, the front positioning protrusion 211 is bent so that the front surface 211A abuts the front end edge 241A of the front positioning hole 241 and the upper surface 211B abuts the upper end edge 241B.

Subsequently, when the support wall 16 is overlaid on the side wall 21, the convex portion 24C (FIG. 1) formed on the side wall 24 is engaged with the groove 165 of the support wall 16, and the front end 16A of the support wall 16 (FIG. 4B). The support wall 16 is fixed to the socket portion 12 by bending the end portion of the locking projection 17. As a result, as shown in FIG. 2, the protrusion 161 is disposed on one side of the second spring portion 32 in the width direction, and the protrusion 231 of the side wall 23 is disposed on the other side. Protected from disturbances.
The female terminal 1 is manufactured by the above procedure. The manufactured female terminal 1 is assembled to the housing of the connector.

Next, the effect exhibited when the male terminal 7 is inserted into the socket portion 12 of the female terminal 1 will be described.
When the contact portion 71 is inserted between the contact 15 and the pressing portion 18 from the state where the contact portion 71 is positioned closer to the insertion port 11 than the contact 15 and the pressing portion 18 (FIG. 6), the contact spring 30 is Receives an upward force (in FIG. 6). The contact portion 71 is pressed toward the contact 15 by the contact load generated in the contact spring 30 against the upward force.

  On the other hand, a moment about the support end 30A is generated in the contact spring 30 receiving the upward force in the counterclockwise direction in FIG. Since the support end 30A is not pivotally supported by the rotation shaft, a force (arrow A) from the pressing portion 18 toward the support end 30A acts due to this moment, and by this force, the side walls 21 and 22 continuous with the contact spring 30 are applied. Tends to be displaced relatively to the front end side (relative to the other side walls 23, 24). If the side walls 21 and 22 are displaced by this force, the contact spring 30 is also displaced toward the front end side, so that the support end 30A and the pressing portion 18 are moved toward the front end side from the design position determined for the contact 15. It will shift and contact pressure will fall. However, since the front surface 211A of the front positioning protrusion 211 is abutted against the front end edge 241A of the front positioning hole 241 (displacement restricting portion 25), the relative displacement between the side wall 21 and the side wall 24 is restricted. The displacement with respect to the side walls 23 and 24 is also restricted. For this reason, the position shift to the front end side of the contact spring 30 with respect to the contact 15 can be prevented.

Further, when the upward force described above is applied to the contact spring 30, the angle formed by the first spring portion 31 and the second spring portion 32 is increased from a right angle to an obtuse angle (a direction in which the joining portion 29 is separated). (Arrow B in FIG. 7C), the contact spring 30 tries to bend. If this bending is allowed, the side walls 21 and 22 continuous with the contact spring 30 are inclined counterclockwise with respect to the other side walls 23 and 24. If it does so, the press part 18 will shift | deviate upward from a design position, and a contact pressure will fall. However, the upper surface 211B of the front positioning protrusion 211 is abutted against the upper end edge 241B of the front positioning hole 241 (displacement restricting portion 27), and as a result, the relative displacement between the side wall 21 and the side wall 24 is restricted. It is possible to prevent the position shift of the portion 18 upward.
As described above, the relative displacement of the side walls 21 and 24 due to the force (arrow A) from the pressing portion 18 toward the support end 30A and the relative displacement of the side walls 21 and 24 when the contact spring 30 is obtuse in the direction of arrow B. Since the relative position of the side walls 21 to 24 is maintained in the same manner as before the insertion of the male terminal 7, a decrease in contact pressure due to the shift of the support end 30 </ b> A and the pressing portion 18 from the design position is avoided. it can.

  As shown in FIG. 7A, if there is a gap S3 between the front surface 211A of the front positioning protrusion 211 and the front edge 241A of the front positioning hole 241, the insertion of the male terminal 7 causes the gap S3. The front positioning protrusion 211 is displaced in the direction of the arrow A until there is no longer the position, and the relative positions of the side walls 21 and 22 and the side walls 23 and 24 shift as shown in FIG. As a result, the support end 30A and the pressing portion 18 of the contact spring 30 are displaced from the design position to the front end side, so that the contact pressure becomes smaller than the design value.

  Further, if there is a gap S4 between the upper surface 211B of the front positioning protrusion 211 and the upper end edge 241B of the front positioning hole 241, the front positioning protrusion 211 is displaced in the direction of arrow B until the gap S4 disappears. Thereby, since the press part 18 leaves | separates upwards from the contact 15, a contact pressure will become smaller than a design value like the above.

As described above, according to the female terminal 1 of the present embodiment, the front positioning protrusion 211 includes the displacement restricting portions 25 and 27 that are abutted against the end edge of the front positioning hole 241, so that the side wall described above. Since a problem caused by the relative displacement of 21 to 24 does not occur, a predetermined contact pressure can be stably obtained. In addition, the displacement restricting portions 25 and 27 utilize the front positioning protrusion 211 and the front positioning hole 241 that are also used for positioning the side walls 21 and 24, and it is not necessary to add a separate configuration for displacement restriction. So the cost does not increase. Since the front positioning protrusion 211 and the front positioning hole 241 are formed by punching a metal plate, the female terminal 1 can be kept small without causing an increase in size due to the addition of a displacement restricting function.
The force indicated by the arrow A due to the moment acting on the contact spring 30 is that the side walls 21 and 22 and the side walls 23 and 24 are separated at the portion where the contact spring 30 is formed. It acts only indirectly on the rear end 122 side away from 123. Therefore, the rear positioning protrusion 212 positioned at the rear end 122 may not be abutted against the end edge of the rear positioning hole 242.

  In the above embodiment, the support end 30A is on the front end side, and the pressing portion 18 and the contact point 15 are on the rear end side. Conversely, the support end 30A is on the rear end side, and the pressing portion 18 and the contact point are on the rear end side. 15 may be on the front end side. In this case, as shown in FIG. 8, the rear surface 212 </ b> C of the rear positioning protrusion 212 may be abutted against the rear edge 242 </ b> C of the rear positioning hole 242. Further, the upper surface 212 </ b> B of the rear positioning protrusion 212 may be abutted against the upper end edge 242 </ b> B of the rear positioning hole 242.

In the above embodiment, the rectangular front positioning protrusion 211 and the front positioning hole 241 are exemplified. However, in the present invention, the L-shaped protrusion 411 and the hole 441 are displaced as in the example of FIG. 9A. A restricting unit may be configured. In this example, the protrusion 411 and the hole 441 have displacement restricting portions 4A and 4A configured by abutment of respective locking surfaces along the direction intersecting the axial direction. These displacement restricting portions 4A and 4A restrict relative displacement between the protrusion 411 and the hole 441 in the same direction (arrow A). By increasing the number of displacement restricting portions in this way, even when a gap occurs in any one of the displacement restricting portions, the relative displacement between the protrusion and the hole can be reliably restricted by the other displacement restricting portions.
The shape of the protrusion and the hole constituting the displacement restricting portion is not limited to the above-described configuration, and may be a cross shape, for example. If it does so, in addition to the direction of A, two displacement control parts can be provided also in the direction of B which crosses the direction of A.

  Furthermore, in the present invention, as shown in FIG. 9B, the displacement restricting portion may be configured by a tapered protrusion 511 and a hole 541 whose width decreases from the rear end side toward the front end side. The slopes 511B and 511D of the projection 511 are abutted against the slopes 541B and 541D of the hole 541, respectively, to form the displacement restricting portions 5AB and 5AB. According to such a configuration, the relative displacement between the protrusion 511 and the hole 541 is restricted in both the A direction and the B direction. In this case, the front surface 511 </ b> A of the protrusion 511 may not be abutted against the front edge 541 </ b> A of the hole 541. In addition, when the tapered shape is employed, the protrusion 511 can be easily inserted into the hole 541 from the rear end side where the hole 541 is wide.

  Furthermore, the first engagement portion and the second engagement portion in the present invention may not be protrusions and holes as described above. For example, as shown in FIG. 10, a locking piece 641 protruding toward the insertion space 120 may be formed on the side wall 24, and the end 611 of the side wall 21 may be abutted against the locking piece 641. The locking piece 641 can be formed in, for example, an L-shaped cross section by being bent toward the rear end side from the front end edge 24D of the side wall 24 and then being bent along the axial direction. . The locking piece 641 can restrict the displacement of the end portion 611 in two directions, ie, an A direction along the axial direction and a B direction intersecting the axial direction.

  Further, the mutual positional relationship between the contact spring 30 and the contact 15 in the above embodiment is merely an example. For example, the positional relationship between the contact spring 30 and the contact 15 may be reversed upside down or rotated 90 degrees. In this case, it is necessary to determine the position where the front positioning protrusion 211 and the end edge of the front positioning hole 241 are abutted according to the relative positional relationship between the contact spring 30 and the contact 15.

Moreover, in the said embodiment, although the press part 18 was formed only in the 1st spring part 31, a press part is also formed in the 2nd spring part 32, and a contact point is formed in the position of the side wall facing this press part. May be.
The contact portion 71 is merely an example of a male terminal contact, and a pin-shaped contact having a circular cross section or a square cross section may be inserted into the socket portion of the female terminal.

  In addition to the above description, the configurations described in the above embodiments can be selected or modified as appropriate to other configurations without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Female terminal 7 Male terminal 11 Insertion port 12 Socket part 13 Crimp part 14 Carrier part 15 Contact 16 Support wall 16A Front end 17, 19 Locking protrusion 18 Press part 21 Side wall (1st side wall)
21A Edge 22 Side wall 23 Side wall 24 Side wall (second side wall)
24A End edge 24C Convex portion 24D Front end edge 25, 27, 4A, 5AB Displacement restricting portion 29 Joint portion 30 Contact spring 30A Support end 30B Tip 31 First spring portion 32 Second spring portion 71 Contact portion 72 Mounting portion 120 Insertion space 121 Front end portion 122 Rear end portion 123 Post 131 Wire barrel 131A Winding portion 132 Insulation barrel 132A Winding portion 161 Protruding portion 162, 163 Notch 164 Opening 165 Groove 211 Front positioning protrusion 211A Front surface 211B Upper surface 211C Rear surface 211D Lower surface 212 Rear positioning protrusion 212A Front surface 212B Upper surface 212C Rear surface 212D Lower surface 231 Protruding part 241 Front positioning hole 241A Front edge 241B Upper edge 241C Rear edge 241D Lower edge 242 Rear positioning hole 242A Front edge 242B Upper edge 242C Rear edge 242D Lower edge 11 projection 441 holes 511 protrusion 511A front 511B, 511D slope 541 hole 541A leading edge 541B, 541D slope 611 end 641 engaging pieces L ridgeline P gaps S1 to S4, S gap

Claims (1)

It has a substantially rectangular tube-shaped side wall including a joint portion between one end edge of the metal plate and the inner surface of the metal plate, and includes a socket portion into which a male terminal is inserted from the front.
The socket part is
A contact point provided on the side wall to establish conduction with the male terminal;
The male terminal is directed to the contact at a pressing portion extending from the support end supported on the front end side of the side wall toward the rear in the axial direction of the socket portion and spaced apart from the support end in the axial direction. A contact spring having a first spring part and a second spring part that are substantially perpendicular to each other in the direction of ease of bending,
When the male terminal is inserted into the socket part from the front, a first side wall and a second side wall located on both sides of the joining part by a force acting on the contact spring from the contact point toward the pressing part. A displacement restricting portion that restricts relative displacement of the
Assuming that the direction of the force acting on the contact spring is a direction from below to above,
The displacement regulating part is
Located in the vicinity of the support end of the first side wall, a positioning projection which projects from the one end edge of said first side wall,
A positioning hole formed in the second side wall with a dimension larger than the dimension of the positioning protrusion in the front-rear direction and the vertical direction, and the positioning protrusion inserted therein;
The male terminal is inserted into the socket part by abutting the front surface of the positioning protrusion and the front end edge of the positioning hole and abutting the upper surface of the positioning protrusion and the upper end edge of the positioning hole. Since the relative displacement between the first side wall and the second side wall is restricted since
A female terminal characterized by that.

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