JP2015022797A - Connector and terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of detecting reverse insertion of a terminal when starting insertion of the terminal into a terminal housing hole.SOLUTION: A connector 1 includes: a connector housing 3 including a terminal housing hole 7 and a locking part 9; and a terminal 5 including a box-shaped part 13 and a projection part 17 projected from the box-shaped part to one side in a vertical direction on a front end part of the box-shaped part. The terminal housing hole includes a terminal box-shaped part insertion part 19 into which the box-shaped part of the terminal is to be inserted and a terminal projection part insertion part 21 into which the projection part of the terminal is to be inserted. When the terminal is inserted into the terminal housing hole of the connector housing and installed in the connector housing, the projection part of the terminal is locked on the locking part of the housing to prevent slip-off of the terminal.

Description

  The present invention relates to a connector and a terminal, and more particularly to a device that prevents erroneous insertion of a terminal into a connector housing by a stabilizer.

  Conventionally, there has been known a connector 307 in which a female terminal 301 shown in FIG. 12A is inserted into a terminal accommodating hole 305 of a connector housing 303 shown in FIG. 11B (see, for example, Patent Document 1).

  The female terminal 301 is provided with a front protrusion 309 and a rear protrusion 311. The terminal housing hole 305 of the connector housing 303 is provided with a lance 313, a rib 315, and a guide groove 317.

  In a state in which the female terminal 301 is inserted and installed in the terminal accommodating hole 305 of the connector housing 303, the front protrusion 309 of the female terminal 301 contacts the rib 315 and the lance 313 is moved as shown in FIG. When the female terminal 301 is elastically deformed and the female terminal 301 is completely inserted into the terminal receiving hole 305 of the connector housing 303, the lance 313 is restored, and the lance 313 contacts the rear projection 311 of the female terminal 301. The stopper from 303 is prevented.

  Further, when the female terminal 301 is inserted into the terminal housing hole 305 of the connector housing 303 and installed, the rear protrusion 311 of the female terminal 301 enters the guide groove 317 of the connector housing 303, so that the female terminal 301 with respect to the connector housing 303 is inserted. Is now regulated.

  In addition, Patent Document 2 can be listed as a technical document related to a conventional connector.

JP 2012-169186 A JP 2006-216324 A

  By the way, in the conventional connector 307, since the rear protrusion 311 is located at the rear side of the female terminal 301, when the insertion of the female terminal 301 into the terminal receiving hole 305 is started, the female terminal with respect to the connector housing 303 is used. If the posture of the terminal 301 is not regulated and the female terminal 301 is not inserted all the way into the terminal receiving hole 305 of the connector housing 303, reverse insertion of the terminal (insertion of the terminal in an incorrect posture) may not be detected. is there.

  In addition, the said problem is a problem which generate | occur | produces similarly also in the male terminal 319 as shown in FIG.12 (b).

  The present invention has been made in view of the above problems, and can detect reverse insertion of a terminal (insertion of a terminal in an incorrect posture) when starting insertion of the terminal into the terminal receiving hole. An object is to provide connectors and terminals.

  According to the first aspect of the present invention, there is provided a connector housing provided with a terminal receiving hole and a locking portion, and a box-shaped portion and a front end portion of the box-shaped portion on one side in a vertical direction from the box-shaped portion. A terminal having a protruding portion protruding, and the terminal receiving hole includes a terminal box-shaped portion insertion portion into which the box-shaped portion of the terminal is inserted and a terminal protrusion into which the protruding portion of the terminal is inserted. And when the terminal is inserted into the terminal receiving hole of the connector housing and installed in the connector housing, the protruding portion of the terminal is engaged with the locking portion of the housing. The connector is configured to be stopped to prevent the terminal from coming off.

  The invention according to claim 2 is the connector according to claim 1, wherein the protruding portion of the terminal constitutes a box-shaped portion expansion preventing portion that prevents the box-shaped portion of the terminal from expanding. It is.

  According to a third aspect of the present invention, in the connector according to the second aspect, the protruding portion of the terminal includes a first portion protruding in the vertical direction from the box-shaped portion, and a horizontal direction from the first portion. And a second part protruding in the vertical direction from the second part toward the box-like part in the longitudinal direction, and the tip part is in contact with the box-like part or slightly separated from the box-like part And a third portion.

  According to a fourth aspect of the present invention, the box-shaped portion, the electric wire caulking portion provided on the rear side of the box-shaped portion, and the front end portion of the box-shaped portion protrude from the box-shaped portion to one side in the vertical direction. A terminal receiving hole configured to include a terminal box-like portion insertion portion into which the locking portion and the box-like portion are inserted, and a terminal protrusion insertion portion into which the projection portion is inserted. When the connector housing is inserted into the terminal receiving hole of the connector housing and installed in the connector housing, the protruding portion is locked to the locking portion of the housing to prevent the connector housing from coming off. It is the terminal comprised so that.

  According to the present invention, it is possible to provide a connector and a terminal that can detect reverse insertion of a terminal (insertion of a terminal in an incorrect posture) when insertion of the terminal into the terminal receiving hole is started. There is an effect.

It is a perspective view which shows the female terminal which concerns on embodiment of this invention. It is II arrow directional view in FIG. It is a figure which shows the state which the box-shaped part of the female terminal opened in FIG. It is the figure which looked at the state which inserted and installed one terminal in one terminal accommodation hole of a connector housing toward the back side from the front side of the connector. It is a figure corresponding to FIG. 4, and is a figure which shows a state when it is going to insert the female terminal which the box-shaped part opened into the terminal accommodating hole. It is an expanded view of the female terminal which concerns on embodiment of this invention. It is the figure which looked at the state which inserted and installed each of several female terminal in each of several terminal accommodation hole of a connector housing toward the back side from the front side of the connector. It is VIII-VIII sectional drawing in FIG. (A) is a figure corresponding to Fig.2 (a), and is a figure which shows the box-shaped part and protrusion part of a female terminal, (b) is a deformation | transformation of the female terminal corresponding to Fig.9 (a). It is a figure which shows an example. It is a perspective view which shows the male terminal which concerns on embodiment of this invention. It is sectional drawing of the conventional connector. It is a perspective view which shows the conventional terminal.

  The connector 1 according to the embodiment of the present invention includes a connector housing 3 and terminals (for example, female terminals 5) as shown in FIGS.

  The connector housing 3 is made of an insulating material such as synthetic resin, and the connector housing 3 is provided with a terminal accommodating hole 7 and a locking portion 9. The locking portion 9 is provided inside the terminal accommodating hole 7.

  The female terminal 5 is formed by performing a predetermined bending process on a flat plate material 11 (see FIG. 6) formed in a predetermined shape with a conductive material such as metal. As shown in FIG. 1 and the like, the female terminal 5 includes a box-shaped portion 13, an electric wire crimping portion 15, and a protruding portion (stabilizer) 17.

  The electric wire crimping portion 15 is provided on the rear side of the box-shaped portion 13. The protruding portion 17 is a front end portion of the box-shaped portion 13 (an end portion on the side opposite to the electric wire crimping portion 15) and protrudes from the outer periphery of the box-shaped portion 13 to one side (one end side) in the vertical direction. Note that the vertical direction is a predetermined direction orthogonal to the front-rear direction.

  As shown in FIG. 8, the terminal accommodating hole 7 includes a terminal box-shaped portion insertion portion 19 into which the box-shaped portion 13 of the female terminal 5 is inserted and a terminal protruding portion insertion portion into which the protruding portion 17 of the female terminal 5 is inserted. 21.

  This prevents erroneous insertion of the female terminal 5 into the terminal accommodating hole 7 of the connector housing 3.

  explain in detail. The female terminal receiving hole 7 is in a posture that is recessed forward from the rear end surface of the connector housing 3, the box-shaped portion 13 is positioned on the front side, and the wire crimping portion 15 is positioned on the rear side. A state in which the terminal 5 is separated from the connector housing 3 on the rear side of the connector housing 3 is defined as an initial state.

  In this initial state, when the female terminal 5 is moved forward with respect to the connector housing 3, the rotation angle of the female terminal 5 around a predetermined axis extending in the front-rear direction is not the correct angle (female terminal 5 Is not in the correct posture), the protruding portion 17 of the female terminal 5 cannot enter the terminal protruding portion insertion portion 21 of the terminal receiving hole 7, and the female terminal 5 is not inserted into the terminal receiving hole 7. ing.

  If the rotation angle of the female terminal 5 around a predetermined axis extending in the front-rear direction is the correct angle, the female terminal 5 is moved forward with respect to the connector housing 3 to insert the terminal box-shaped portion. The box-shaped portion 13 of the female terminal 5 is inserted into the portion 19, the protruding portion 17 of the female terminal 5 is inserted into the terminal protruding portion insertion portion 21, and the female terminal 5 is inserted and installed in the terminal receiving hole 7. It has become.

  When the female terminal 5 is inserted into the terminal accommodating hole 7 of the connector housing 3 and accommodated and installed in the connector housing 3, the protruding portion 17 of the female terminal 5 is engaged with the engaging portion 9 of the connector housing 3, The female terminal 5 is prevented from coming off from the connector housing 3 (preventing backward movement).

  Further, the protruding portion 17 of the female terminal 5 constitutes a box-shaped portion expansion preventing portion 23 of the box-shaped portion 13 of the female terminal 5. That is, a part of the protrusion 17 of the female terminal 5 engages with a part of the outer periphery of the box-like part 13 of the female terminal 5, thereby preventing the box-like part 13 of the female terminal 5 from expanding. An expansion preventing portion 23 is configured.

  As a result, the protruding portion 17 of the female terminal 5 constitutes the erroneous insertion preventing portion 25, the locked portion 27, and the box-shaped portion expansion preventing portion 23. The erroneous insertion preventing portion 25 is a portion for preventing the erroneous insertion of the female terminal 5 into the terminal accommodating hole 7 as described above, and the locked portion 27 is engaged with the connector housing 3 as described above. This is a part that is locked to the stopper 9 and prevents the female terminal 5 from coming off the connector housing 3.

  The protrusion 17 of the female terminal 5 includes a first part 29, a second part 31, and a third part 33 as shown in FIG.

  The first portion 29 protrudes from the box-shaped portion 13 in the vertical direction. The second part 31 protrudes laterally from the tip of the first part. The horizontal direction is one direction orthogonal to the front-rear direction and the vertical direction. The third portion 33 protrudes from the tip of the second portion 31 in the longitudinal direction toward the box-shaped portion 13. Furthermore, the tip of the third portion 33 is very slightly separated from the box-shaped portion 13. In addition, the structure which the front-end | tip part of the 3rd site | part 33 is contacting the box-shaped part 13 may be sufficient.

  When the projecting portion 17 configured to include the first portion 29, the second portion 31, and the third portion 33 is viewed from the front-rear direction, it has a “U” shape (see FIG. 2 and the like).

  The connector 1 will be described in more detail. The connector housing 3 is formed in a rectangular parallelepiped shape. The terminal accommodating hole 7 is recessed from the rear end surface 37 of the connector housing 3 toward the front side.

  The bottom surface 35 of the terminal accommodating hole 7 is located in the vicinity of the front end surface 39 of the connector housing 3. From the bottom surface 35 to the front end surface 39 of the terminal accommodating hole 7, a male terminal tab (protruding portion) of a male terminal (for example, a male terminal 63 as shown in FIG. 10) connected to the female terminal 5 installed in the connector housing 3. ) 65 is provided.

  When the terminal accommodating hole 7 is viewed from the front-rear direction, as shown in FIG. 4 and the like, one corner of the rectangle is formed in a shape cut out by a rectangle smaller than the rectangle. That is, it has a shape having a large rectangle and a small rectangle. And the terminal box-shaped part insertion part 19 is a larger rectangle, and the terminal protrusion insertion part 21 is a smaller rectangle.

  Further, in the vertical direction, the terminal protrusion insertion portion 21 is positioned on one end side, the terminal box-shaped portion insertion portion 19 is positioned on the other end side, and in the horizontal direction, the terminal protrusion insertion portion 21 is one end. Located on the side.

  A plurality of terminal receiving holes 7 are provided. When viewed from the front-rear direction, the terminal receiving holes 7 are arranged at predetermined intervals in the vertical direction and the horizontal direction (see FIG. 7).

  As shown in FIG. 8, the locking portion 9 of the connector housing 3 includes an elastic arm 43. The elastic arm 43 is provided in the terminal protrusion insertion portion 21. More specifically, the elastic arm 43 has a proximal end located on the rear side and a distal end located on the front side, and extends from the wall surface at one end in the longitudinal direction of the terminal protruding portion insertion portion 21.

  When the female terminal 5 is being installed in the connector housing 3, when the elastic arm 43 is elastically deformed by being pushed by the protruding portion 17 of the female terminal 5 and the female terminal 5 has been installed in the connector housing 3. The elastic arm 43 is restored by the protrusion 17 being disengaged from the elastic arm 43, the tip (front end) 45 of the elastic arm 43 is engaged with the protrusion 17, and the female terminal 5 installed in the connector housing 3 is It is configured so that it can be prevented from coming off.

  As shown in FIG. 1 and the like, the box-shaped portion 13 of the female terminal 5 is formed in a rectangular cylindrical shape, and the electric wire crimping portion 15 includes a core wire crimping portion 47 and a sheath crimping portion 49. .

  As shown in FIG. 6 and the like, the box-shaped portion 13 includes a rectangular bottom wall portion 51, a pair of rectangular side wall portions 53 and 55, a rectangular first upper wall portion 57, and a rectangular second shape. An upper wall portion 59 and a rectangular third upper wall portion 61 are provided.

  The bottom wall portion 51 and the pair of rectangular side wall portions 53 and 55 extend over the entire length of the box-shaped portion 13 in the front-rear direction. Further, when the bottom wall portion 51 and the pair of rectangular side wall portions 53 and 55 are viewed from the front-rear direction, they have a “U” shape (see FIG. 2).

  The first upper wall portion 57 is provided on the side wall portion 53 between the front end of the box-shaped portion 13 and a portion that is separated from the front end of the box-shaped portion 13 to the rear end side by a predetermined slight distance. . When the bottom wall portion 51, the pair of rectangular side wall portions 53 and 55, and the first upper wall portion 57 are viewed from the front-rear direction, they are in a “B” shape (see FIG. 2).

  The second upper wall portion 59 is provided on the side wall portion 53 between the rear end of the box-shaped portion 13 and a portion separated from the rear end by a predetermined distance from the front end side. When the bottom wall portion 51, the pair of rectangular side wall portions 53 and 55, and the second upper wall portion 59 are viewed from the front-rear direction, they have a "B" shape.

  A rectangular elastic contact piece (elastic protruding piece) 67 protrudes from the second upper wall portion 59. The elastic contact piece 67 sandwiches the male terminal tab 65 of the male terminal 63 connected to the female terminal 5 together with the bead portion 69 formed on the bottom wall portion 51. An “L” -shaped cutout 71 is provided between the elastic contact piece 67 and the first upper wall portion 57.

  The protruding portion 17 is provided on the side wall portion 55 between the front end of the box-shaped portion 13 and a portion that is separated from the front end of the box-shaped portion 13 to the rear end side by a predetermined slight distance. In addition, the length of the protrusion part 17 in the front-back direction is longer than the length of the first upper wall part 57 in the front-rear direction. Further, the length of the second upper wall portion 59 in the front-rear direction is longer than the length of the protruding portion 17 in the front-rear direction.

  The third upper wall portion 61 is provided on the side wall portion 55 between the rear end of the box-shaped portion 13 and a portion separated from the rear end of the box-shaped portion 13 to the front end side by a predetermined slight distance. Yes. The length of the third upper wall portion 61 in the front-rear direction is slightly shorter than the length of the second upper wall portion 59 in the front-rear direction (see FIGS. 1 and 6).

  When the bottom wall portion 51, the pair of rectangular side wall portions 53 and 55, the second upper wall portion 59, and the third upper wall portion 61 are viewed from the front-rear direction, they are in a “B” shape. However, the second upper wall portion 59 and the third upper wall portion 61 overlap each other, the second upper wall portion 59 is located inside the box-shaped portion 13, and the third upper wall portion 61 is the box. It is located outside the shaped portion 13 (see FIG. 1).

  A small rectangular protruding piece 73 protruding from the second upper wall portion 59 enters a small rectangular through hole 75 provided between the third upper wall portion 61 and the side wall portion 55. (See FIG. 1). Thereby, the box-shaped part expansion prevention part 60 for maintaining the shape of the rectangular cylindrical box-shaped part 13 is also formed in the rear part of the box-shaped part 13 (see FIG. 1).

  Here, the box-shaped part expansion preventing part 23 provided on the front side of the box-shaped part 13 will be described in detail. When the box-like portion 13 and the protruding portion 17 of the female terminal 5 are viewed from the front side, as shown in FIG. 9A, a bottom wall portion 51, a pair of rectangular side wall portions 53 and 55, and a first upper wall are provided. The box portion 13 having a “B” shape is formed with the portion 57. However, the end (right end) of the first upper wall portion 57 is slightly separated from the side wall portion 55 (projecting portion 17). In addition, the structure which the edge of the 1st upper wall part 57 is contacting the side wall part 55 (projection part 17) may be sufficient.

  The first portion 29 of the protruding portion 17 protrudes from the side wall portion 55 to one side in the vertical direction in a form in which the side wall portion 55 is extended as it is.

  The second portion 31 of the protruding portion 17 extends from the distal end portion of the first portion 29 to the other end side in the horizontal direction (the box-shaped portion 13 side in the horizontal direction). The third portion 33 extends from the distal end portion of the second portion 31 toward the box-shaped portion 13 side. In addition, although the intersection angle of the 1st site | part 29 and the 2nd site | part 31 is substantially 90 degrees, the intersection angle of the 2nd site | part 31 and the 3rd site | part 33 is 100 degrees-110 degrees. The obtuse angle is slightly larger than about 90 °.

  The tip of the third portion 33 is slightly separated from the first upper wall portion 57 of the box-shaped portion 13, but may be in contact with the first upper wall portion 57.

  Further, the width of the projecting portion 17 in the lateral direction is about half that of the box-shaped portion 13. Furthermore, when viewed from the front-rear direction, the outer shape of the box-shaped portion 13 and the protruding portion 17 is the same shape as the terminal accommodating hole 7 and is slightly smaller than the terminal accommodating hole 7.

  The box-shaped part expansion prevention part 23 of the box-shaped part 13 is comprised because the box-shaped part 13 and the protrusion part 17 are the forms mentioned above. That is, even if the first upper wall portion 57 of the box-shaped portion 13 is to be deformed in the direction indicated by the arrow in FIG. 9A, the deformation is prevented by contacting the protruding portion 17, and the expansion of the box-shaped portion 13 is prevented. Opening is prevented.

  In addition, as shown by a two-dot chain line in FIG. 6, a through hole 77 may be provided in the first upper wall portion 57 and a protruding piece 79 may be provided in the third portion 33 of the protruding portion 17. Then, as shown in FIG. 9B, the protruding piece 79 may enter the third portion 33 in the through hole 77 of the first upper wall portion 57. Thereby, the expansion of the box-shaped part 13 is further prevented.

  Next, installation of the female terminal 5 to the connector housing 3 will be described.

  Insertion of the female terminal 5 provided with the electric wire 81 into the terminal accommodating hole 7 of the connector housing 3 is started. At this time, if the female terminal 5 is in an incorrect posture, the protruding portion 17 of the female terminal 5 does not enter the terminal protruding portion insertion portion 21 of the terminal accommodating hole 7 and the erroneous insertion of the female terminal 5 is prevented.

  When the insertion of the female terminal 5 in the correct posture into the terminal accommodating hole 7 is advanced, the elastic arm 43 is elastically deformed by being pushed by the protruding portion 17 of the female terminal 5. When the insertion is further advanced, the protrusion 17 disengages from the elastic arm 43 to restore the elastic arm 43, the tip 45 of the elastic arm 43 engages the protrusion 17, and the female terminal 5 is installed in the connector housing 3. Is completed, and the female terminal 5 installed in the connector housing 3 is prevented from coming off.

  As shown in FIG. 2, when the box-shaped portion 13 of the female terminal 5 is not expanded and is in a good state, as shown in FIG. Insertion is allowed. On the other hand, as shown in FIG. 3, when the box-like portion 13 of the female terminal 5 is expanded and is in a defective state, as shown in FIG. 7 is caught in the meat part of the outer connector housing 3, and insertion into the terminal accommodating hole 7 of the connector housing 3 is prevented.

  According to the connector 1, the protruding portion 17 of the female terminal 5 is provided at the front end portion of the box-shaped portion 13, and the terminal accommodating hole 7 of the connector housing 3 is a terminal into which the box-shaped portion 13 of the female terminal 5 is inserted. Since the box-shaped part insertion part 19 and the terminal protrusion part insertion part 21 into which the protrusion part 17 of the female terminal 5 is inserted are provided, when the insertion into the terminal accommodating hole 7 is started, the female terminal 5 is reversely inserted. (Insertion of the female terminal 5 in a wrong posture) can be detected.

  Further, according to the connector 1, when the female terminal 5 is inserted into the terminal receiving hole 7 of the connector housing 3 and installed in the connector housing 3, the protruding portion 17 of the female terminal 5 is the locking portion 9 of the connector housing 3. Since the female terminal 5 is prevented from coming off by being locked to the female terminal 5, the female terminal 5 is prevented from being reversely inserted by one protrusion 17, and the female terminal inserted and installed in the connector housing 3. 5 is prevented and the configuration is simplified.

  Further, according to the connector 1, the box-shaped portion expansion preventing portion 23 for preventing the expansion of the box-shaped portion 13 of the female terminal 5 is constituted by the protruding portion 17, so that the box of the female terminal 5 can be formed with a simple configuration. Expansion of the shape part 13 can be prevented. That is, the protruding portions 17 gathered in one place are the erroneous insertion preventing portion 25 for preventing the female terminal 5 from being erroneously inserted, the locked portion 27 for preventing the female terminal 5 from coming off, and the box-shaped portion expansion preventing portion 23. Therefore, the configuration of the female terminal 5 is simplified.

  Moreover, according to the connector 1, the protrusion part 17 of the female terminal 5 is comprised by the 1st site | part 29, the 2nd site | part 31, and the 3rd site | part 33, and when seen from the front-back direction, a female terminal 5 has a predetermined width (about half the width of the box-like portion 13) in the lateral direction, the area of the erroneous insertion preventing portion 25 is large, and the detection property of erroneous insertion is improved. The height is high, and the erroneous insertion of the female terminal 5 is less likely to occur.

  In the above description, the female terminal 5 is described as an example, but the male terminal 63 shown in FIG. 10 may be used instead of the female terminal 5.

DESCRIPTION OF SYMBOLS 1 Connector 3 Connector housing 5 Female terminal 7 Terminal accommodation hole 9 Locking part 13 Box-shaped part 15 Electric wire crimping part 17 Projection part 19 Terminal box-shaped part insertion part 21 Terminal projection part insertion part 23 Box-shaped part expansion prevention part 29 1st 1 part 31 2nd part 33 3rd part

Claims (4)

A connector housing provided with a terminal receiving hole and a locking portion;
A terminal having a box-shaped portion and a protruding portion protruding from the box-shaped portion to one side in the longitudinal direction at a front end portion of the box-shaped portion;
The terminal receiving hole is configured to include a terminal box-shaped portion insertion portion into which the box-shaped portion of the terminal is inserted, and a terminal protruding portion insertion portion into which the protruding portion of the terminal is inserted. ,
When the terminal is inserted into the terminal housing hole of the connector housing and installed in the connector housing, the protruding portion of the terminal is locked to the locking portion of the housing so that the terminal is prevented from coming off. The connector characterized by being comprised in this. The connector according to claim 1,
The connector is characterized in that the protruding portion of the terminal constitutes a box-shaped portion expansion preventing portion that prevents the box-shaped portion of the terminal from expanding. The connector according to claim 2,
The protruding portion of the terminal includes a first portion protruding in the vertical direction from the box-shaped portion, a second portion protruding in the lateral direction from the first portion, and the vertical direction from the second portion. And a third portion that protrudes toward the box-shaped portion and has a tip portion in contact with the box-shaped portion or slightly separated from the box-shaped portion. . A box-shaped portion, a wire caulking portion provided on the rear side of the box-shaped portion, and a protruding portion protruding from the box-shaped portion to one side in the vertical direction at the front end portion of the box-shaped portion;
A connector housing provided with an engagement portion, a terminal box-like portion insertion portion into which the box-like portion is inserted, and a terminal housing hole configured to include a terminal projection insertion portion into which the projection portion is inserted When the projection is inserted into the terminal receiving hole and installed in the connector housing, the protruding portion is locked to the locking portion of the housing to prevent the connector housing from coming off. Terminal characterized by.

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