JP2016103432A - Connector, terminal using for the connector and housing storing the terminal therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a shaking amount of a plurality of terminals at the external connection end stored in a housing.SOLUTION: Disclosed is a connector 1 including: a housing 2 in which a plurality of terminal housing chambers 5 having a front opening 4 into which a mating terminal is inserted are arranged in an array via a partition wall 2d; and each of a plurality of terminals 3 which is housed in the terminal housing chamber from a rear opening 6 of the housing, and also having an external connection end 9 formed by leading out each terminal 3 to the outside from the rear opening of the housing via a lead-out conductor 8. In the housing 2, on the internal wall surface of a position corresponding to an extension part 8a (8b), a gap 14a (14b) is formed into which the extension 8a (8b) is inserted from an extending direction of a lead-out conductor.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a connector, a terminal used for the connector, and a housing that accommodates the terminal, and in particular, external connection of a plurality of terminals that are accommodated in a plurality of terminal accommodating chambers arranged in the housing and drawn out of the housing. The present invention relates to a device suitable for connecting an end to a plurality of connecting portions provided on an electrical component such as a wiring board.

  As this type of connector, for example, a connector mounted on a wiring board described in Patent Document 1 (hereinafter referred to as a board mounting connector) is known. According to Patent Document 1, the board mounting connector is formed by holding a plurality of terminals on a housing which is an insulator at a predetermined pitch. Each of the plurality of terminals includes a contact portion that is connected to an object to be connected, a terminal portion that has a soldering portion that is connected to the wiring board, and a press-fit portion that is press-fitted into the housing. As described above, according to the board mounting connector described in the literature 1, since the plurality of terminals are press-fitted and held in the housing, the terminal portions and contact portions of the plurality of terminals in the connector are prevented from shaking. Therefore, it is possible to prevent displacement of the connection portion with the connection object and the terminal portion soldered to the wiring board.

JP 2004-253184 A

  However, since the board mounting connector described in Patent Document 1 relates to a board mounting connector used when two wiring boards are connected to each other, the wiring board and another electrical device are connected via a pair of connectors. No consideration is given to problems caused by wobbling of connector terminals when detachably connecting. For example, a female connector connected to a wiring board may be fitted with a male connector connected to another electrical device and connected. In this case, in order to ensure the electrical connection reliability of these connectors, it is necessary to ensure the area of the contact portion between the male terminal and the female terminal. Therefore, the cross-sectional area and length of the terminal accommodating chamber that holds the female terminal are required. Moreover, since the clearance (gap) between the female terminal and the inner surface of the terminal accommodating chamber is necessary in consideration of the assembling property, there is a problem that the female terminal swings in the longitudinal direction in the terminal accommodating chamber.

  That is, when the female terminal swings in the terminal accommodating chamber, a plurality of external connection ends that are integrally formed with the female terminal and are drawn out from the housing in order to connect to an electrical component such as a wiring board also swing. Due to this deflection, the positions of the plurality of external connection ends of the connector are shifted from the positions of the holes (for example, through holes) of the plurality of connection portions provided on the wiring board. However, there is a problem that the assemblability deteriorates. Note that the same problem arises not only when the female connector is connected to the wiring board but also when the male connector is used. Moreover, it is not restricted to the connector used for a connection with a wiring board, It is the same also when connecting the some external connection end of a female connector or a male connector to the several terminal part provided in the electrical component of a connection object There is a problem.

  The problem to be solved by the present invention is to reduce the deflection amount of the external connection ends of a plurality of terminals accommodated in the housing of the connector.

  In order to solve the above-described problems, the present invention provides a housing in which a plurality of terminal accommodating chambers having front openings into which mating terminals are inserted are arranged via partition walls, and the terminal accommodating chambers from the rear openings of the housings. A plurality of terminals each housed, wherein each of the terminals has an external connection end that is led out from the rear opening of the housing via a lead conductor, A projecting portion is formed at a position located in the housing, and the projecting portion 8a (8b) extends on the inner wall surface of the housing at a position corresponding to the projecting portion 8a (8b). A gap 14a (14b) inserted from the direction is provided.

  According to the present invention, since the gap into which the protruding portion is inserted from the extending direction of the lead conductor is formed on the inner wall surface of the housing, the movement of the protruding portion is restricted by the gap. Thereby, since the movement of the lead conductor in which the overhang | projection part was formed is also controlled, the movement of the external connection end of the some terminal accommodated in the housing of the connector is also controlled. As a result, it is possible to reduce misalignment between the positions of a plurality of external connection ends of a connector used for connection to an electrical component such as a wiring board and the positions of a plurality of connection portions provided on the electrical component to be connected. Decrease in wearability can be improved. The gap that regulates the movement of the overhanging portion is formed by forming a groove-like gap on the inner wall surface of the housing, or by providing a protrusion so as to face the inner wall surface of the housing. It can be formed by providing a pair of protrusions at intervals.

  In the present invention, when the lead conductor is formed of a strip-shaped conductor, the projecting portion is a pair of projecting portions formed on both side surfaces of the strip-shaped conductor, and the gap is the inner wall of the housing at a position corresponding to the pair of projecting portions. The portion is formed in a groove shape along the axial direction of the terminal accommodating chamber, and has a bottom surface with which the protruding tip of the protruding portion abuts. According to this, since the overhanging portion of the lead conductor is inserted into the groove, the movement of the overhanging portion is restricted by the groove wall with respect to the vertical vibration perpendicular to the surface of the strip-like surface of the lead conductor. Further, the movement of the protruding portion is restricted by the bottom surface of the groove with respect to the lateral deflection along the strip surface of the lead conductor. Thereby, the adjustment work of the positional shift of the plurality of external connection ends of the connector is further reduced with respect to the plurality of connection portions provided on the electrical component such as the wiring board, and the deterioration of the assembling property can be reduced.

  Furthermore, it is desirable that the lead conductor has a shape having a crank-shaped bent portion formed by bending a portion where the protruding portion is formed outside the terminal insertion path. That is, if the protrusion protrudes into the terminal insertion path corresponding to the inner surface of the terminal accommodating chamber, it becomes an obstacle to terminal insertion. In order to avoid such an obstacle, the lead conductor is bent in a crank shape to provide an overhang portion at a position off the terminal insertion path, and a protrusion for forming a groove for restricting the movement of the overhang portion is provided. It is preferable. In addition, when the lead conductor is formed in a straight shape, the above-described obstacle can be avoided by widening the rear opening of the housing so that the protrusion is positioned outside the terminal insertion path.

  Moreover, the groove | channel formed in a protrusion can be formed as a press-fit groove which press-fits an overhang | projection part. According to this, the shake amount of the external connection end can be further suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the connector which can reduce the deflection amount of the external connection end of the some terminal accommodated in the housing of the connector can be provided.

It is the perspective appearance figure which decomposed | disassembled and showed the housing and female terminal of the connector of Embodiment 1 of this invention. It is a figure which shows the back opening surface of the housing which inserts the female terminal of FIG. It is a figure which shows the female terminal of Embodiment 1 of this invention, (a) is a perspective external view, (b) is a side view. It is the arrow line view seen from arrow IV-IV of FIG. It is sectional drawing of the state which accommodated the female terminal in the terminal storage chamber of the housing of FIG. FIG. 3 is an arrow view seen from the arrow VI-VI in FIG. 2. FIG. 7 is a perspective view of a portion corresponding to FIG. 6. It is an enlarged view of the site | part enclosed with the dashed-dotted line B of FIG. FIG. 6 is an enlarged view of a portion surrounded by an alternate long and short dash line A in FIG. 5. It is sectional drawing of the state which accommodated the female terminal in the terminal accommodating chamber of the housing of Embodiment 2 of this invention. It is the figure seen from the back opening side of the housing of Embodiment 2.

  Hereinafter, the connector of the present invention will be described based on the embodiment shown in FIGS.

  With reference to FIGS. 1-9, the connector of Embodiment 1 of this invention is demonstrated. The present embodiment is a so-called female connector used for connection to a wiring board (not shown). However, the connector 1 of the present invention is not limited to the one used for connection to the wiring board, and can be applied to a female or male connector used for connection to an electrical component having a plurality of connection portions.

(Embodiment 1)
FIG. 1 is an exploded perspective view of the connector 1 according to the first embodiment. The connector 1 includes a plurality of female terminals 3 and a resin housing 2 in which each female terminal 3 is accommodated. In the housing 2, a plurality of terminal accommodating chambers 5 each having a front opening 4 into which a mating terminal (not shown) is inserted are arranged via a partition wall. Each terminal accommodating chamber 5 is formed as a cylindrical cavity having a rectangular cross section. Each female terminal 3 is inserted from the rear opening 6 shown in FIG. 2 of the housing 2 and is accommodated in each terminal accommodating chamber 5. The plurality of female terminals 3 are formed in the same shape. That is, the female terminal 3 is formed to have a metal cylindrical terminal 7 having a rectangular cross section and a strip-shaped lead conductor 8 extending from one end of the cylindrical terminal 7. . The lead conductor 8 is formed to have an external connection end 9 that is drawn out from the rear opening of the housing 2 and connected to a connection portion of an electrical component such as a wiring board to be connected by solder or the like. In the housing 2 in which the plurality of female terminals 3 are accommodated, for example, external connection ends 9 are respectively inserted into holes of a plurality of connection portions provided in a wiring board to be connected, and support portions 2a and 2b provided at both ends. It is fixed to the wiring board by bolts or the like via

  Next, the detailed structure of the female terminal 3 is demonstrated with reference to Fig.3 (a), (b). The female terminal 3 is formed by cutting and bending a plate material necessary for forming the rectangular cylindrical terminal 7 and the lead conductor 8 from a metal strip. The cylindrical terminal 7 ensures the strength by bending the edge of the plate cut out from the band material and appropriately forming the overlapping portion 7b. Further, in the drawing, the lance 7a is formed by cutting and raising the upper surface of the cylindrical body, and is formed so as to be locked to an opening edge formed on the wall surface of the terminal accommodating chamber 5 described later and held in the housing 2.

  The lead conductor 8 of the female terminal 3 is provided extending from the rear end of the bottom (one side) of the rectangular cylindrical terminal 7, and an external connection end 9 is formed at the tip of the lead conductor 8. Further, a crank-shaped bent portion 10 is formed in the middle of the lead conductor 8 corresponding to the base end of the external connection end 9 so that the external connection end 9 is positioned at a position lower than the bottom of the cylindrical terminal 7 in the drawing. Has been. In particular, a pair of projecting portions (wing portions) 8 a and 8 b projecting from both side surfaces of the lead conductor 8 positioned at the lower end of the bent portion 10 are provided.

  Next, sectional views taken along arrows IV-IV in FIG. 2 are shown in FIGS. 4 and 5, and detailed configurations of the housing 2 and the terminal accommodating chamber 5 will be described. 4 and 5 show a cross-sectional view of one of the plurality of terminal accommodating chambers 5 arranged in the width direction of the housing 2 via a partition wall, and FIG. 5 shows the female terminal 3 as the terminal accommodating chamber 5. The state accommodated in is shown. As shown in the figure, the terminal accommodating chamber 5 faces the front opening 4 of the housing 2 and has a rectangular cross section and a length corresponding to the rectangular tubular terminal 7 of the female terminal 3. It is surrounded by two provided partition walls 2d, an upper wall 2e, and a lower wall 2f. The upper wall 2g of the terminal accommodating chamber 5 at a portion connected to the rear opening 6 of the housing 2 is formed by shifting the position upward in the drawing and expanding the vertical dimension.

  At the end of the lower wall 2f of the housing 2 on the rear opening 6 side, a shake restricting protrusion 11 according to the characteristic portion of the present embodiment is provided. As shown in FIG. 7, the deflection restricting protrusions 11 are protruded from both end surfaces in the width direction on the rear opening 6 side of the lower wall 2 f (in other words, the partition walls 2 d on both sides of the housing 2) and are formed vertically. Two pairs of prismatic projections 12a and 12b and prismatic projections 13a and 13b are formed. Grooves 14a and 14b are formed as gaps between the two pairs of prismatic protrusions 12a and 12b and 13a and 13b, respectively. The pair of grooves 14 a and 14 b are provided so that when the female terminal 3 is inserted into the terminal accommodating chamber 5, a pair of overhang portions (wing portions) 8 a and 8 b formed in the lead conductor 8 are inserted. It has been.

  In the present embodiment, the bottom surfaces of the grooves 14a and 14b correspond to the partition walls 2d. And the overhang | projection tip of a pair of overhang | projection part (blade part) 8a, 8b is set to the overhang | projection height which contact | abuts to the partition 2d corresponded to the groove bottom face of a pair of groove | channel 14a, 14b. The bottom surfaces of the pair of grooves 14a and 14b are not limited to the partition walls 2d. For example, by forming the prismatic protrusions 12a and 12b or the prismatic protrusions 13a and 13b integrally and reducing the depth of the pair of grooves 14a and 14b, it is possible to form a groove bottom having an arbitrary depth. Therefore, the depth of the pair of grooves 14a and 14b can be set in accordance with the protruding height of the pair of protruding portions (wing portions) 8b.

  Next, an operation for assembling the female terminal 3 to the housing 2 of the present embodiment will be described. The cylindrical terminal 7 of the female terminal 3 shown in FIG. 3 is inserted from the rear opening 6 of the terminal accommodating chamber 5 shown in FIG. At this time, when the bottom surface of the cylindrical terminal 7 is inserted along the upper surface of the lower wall 2d of the terminal accommodating chamber 5, the lance portion 7a of the cylindrical terminal 7 is pushed down by the upper wall 2e of the terminal accommodating chamber 5. Furthermore, as shown in FIG. 5, when the female terminal 3 is inserted at a position where the lance portion 7a reaches the opening 2h formed in the upper wall 2e, the pressing force of the lance portion 7a is released and enters the opening 2h. Thereby, the edge part of the lance part 7a engages with the opening edge 2i, and extraction of the female terminal 3 is controlled. At this time, as shown in the figure, the pair of projecting portions 8a and 8b of the lead conductor 8 are assembled in a state of being inserted into the pair of grooves 14a and 14b formed in the deflection regulating projection 11, respectively.

  In the assembled state of FIG. 5, since the protruding portions 8a and 8b of the lead conductor 8 are inserted into the pair of grooves 14a and 14b, the vibration shown in FIG. The movement of the overhanging portions 8a and 8b is restricted by the shake restricting protrusion 11. Further, the movement of the overhanging portion 8a is restricted by the groove bottom surfaces of the pair of grooves 14a and 14b formed in the shake restricting protrusion 11 with respect to the shake (left and right shake) indicated by the arrow 16 in FIG. . Thereby, the horizontal and vertical deflections of the lead conductor 8 are restricted, and the deflection of the external connection end 9 is also regulated. As a result, the adjustment work of the positional deviation of the plurality of external connection ends 9 of the connector 1 is reduced with respect to the plurality of connection portions provided in the electrical component such as the wiring board, and the deterioration of the assembling property can be reduced. .

(Embodiment 2)
10 and 11 show the configuration of the second embodiment according to the characterizing portion of the present invention. 10 is a cross-sectional view corresponding to FIG. 5 of the first embodiment, and FIG. 11 is a view seen from the rear opening side of the housing 2 of the second embodiment. The difference between the present embodiment and the first embodiment is that the lead conductor 8 is formed in a straight shape without forming the crank-shaped bent portion 10 in the lead conductor 8, and the configuration of the deflection regulating projection 21 is different. It is in. Since the other points are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in these figures, the deflection restricting protrusion 21 of the present embodiment is provided with a pair of prismatic protrusions 22a and 22b protruding from the inner surface of the partition wall 2d of the housing 2 forming the terminal accommodating chamber 5, and each column protrusion. Grooves 23 a and b are formed between the lower surfaces of 22 a and b and the inner surface (upper surface) of the lower wall 2 f of the housing 2 that forms the terminal accommodating chamber 5. Similarly to the first embodiment, in this embodiment, the lower portion (for example, about half of the thickness) of the lead conductor 8 is a shallow groove 2j formed to extend to the inner surface (upper surface) of the lower wall 2f of the housing 2. Embedded in. Therefore, in this embodiment, the inner surface (upper surface) of the lower wall 2f is flush with the bottom surface of the shallow groove 2j from the position facing the pair of prismatic protrusions 22a, 22b to the rear opening 6 side. Further, the dimension between the ends of the pair of prismatic protrusions 22a and 22b is set larger than the width dimension of the lead conductor 8.

  With this configuration, when the female terminal 3 is assembled to the housing 2 of the present embodiment, the upper surface of the pair of prismatic protrusions 22a and 22b and the housing 2 from the rear opening 6 of the terminal accommodating chamber 5 shown in FIG. The cylindrical terminal 7 of the female terminal 3 is inserted into the terminal accommodating chamber 5 through the space between the widened upper wall 2g on the rear opening 6 side. If the portion of the cylindrical terminal 7 is inserted at a position where the pair of prismatic protrusions 22a and 22b is inserted, the lead conductor 8 has a width smaller than that between the ends of the pair of prismatic protrusions 22a and 22b. The entire conductor 8 is inserted to a predetermined position along the upper surface of the lower wall 2f of the housing 2. Thereby, a pair of overhang | projection parts 8a and b of the extraction conductor 8 are each inserted in a pair of groove | channels 23a and 23b. At this time, the tips of the pair of overhanging portions 8a, b are brought into contact with the inner surfaces of the partition walls 2d, which are the groove bottom surfaces of the pair of grooves 23a, b.

  As described above, according to the second embodiment, the shake restricting protrusion 21 restricts the left and right and vertical shakes of the lead conductor 8, and the shake of the external connection end 9 is also restricted. As a result, as in the first embodiment, the adjustment work of the positional deviation of the plurality of external connection ends 9 of the connector 1 is reduced with respect to the plurality of connection portions provided in the electrical component such as the wiring board, and the assembly property is improved. Reduction can be reduced.

  As mentioned above, although this invention was demonstrated based on Embodiment 1, 2, this invention is not limited to these, It is possible to implement in the form deform | transformed or changed in the range of the main point of this invention. It will be obvious to those skilled in the art, and it is obvious that such variations or modifications are within the scope of the claims of the present application.

  For example, in the first embodiment, a pair of overhanging portions 8a and 8b are formed on both side surfaces of the lead conductor 8, and a pair of grooves 14a and 14b are formed in the shake restricting protrusion 11 correspondingly. If one of the overhang portions 8a (or 8b) and the groove 14a (or 14b) are provided, the problems and effects of the present invention can be achieved. Similarly, also in Embodiment 2, if any one of the overhanging portions 8a (or 8b) and the grooves 23a (or 23b) are provided, the problems and effects of the present invention can be achieved.

  Further, in the second embodiment in which the lead conductor 8 is formed in a straight shape, when there is a possibility that the insertion of the female terminal 3 may be hindered by the deflection restricting projection 21, the distance between the pair of prismatic protrusions 22 a and 22 b is set to the female terminal 3. It should be larger than the width of the insertion path. Then, the dimension between the partition walls 2d of the rear opening 6 of the housing 2 may be increased by that amount, or the protrusion height of the pair of prismatic protrusions 22a and 22b may be reduced.

  In the second embodiment, a pair of grooves 23 a and 23 b are formed between the pair of prismatic protrusions 22 a and 22 b and the lower wall 2 f of the housing 2. However, when the lead conductor of the female terminal 3 is drawn from a position close to the upper wall 2g of the housing 2, a pair of grooves 23a and 23b are formed between the pair of prismatic protrusions 22a and 22b and the upper wall 2g of the housing 2. May be.

  Furthermore, the pair of grooves 14a and 14b of the first embodiment or the pair of grooves 23a and b of the second embodiment can be formed as press-fitting grooves for press-fitting the protruding portions 8a and 8b. According to this, it is possible to further suppress the shake of the external connection conductor.

  Moreover, although the female terminal 3 of this Embodiment 1 demonstrated the rectangular cylindrical cylindrical terminal 7 as an example. The present invention is not limited to this, and may be a round cylindrical cylindrical terminal formed by bending a metal strip. Furthermore, the terminal of the present invention is not limited to a female terminal, and may be a needle-shaped or rod-shaped male terminal. Even in the case of male terminals, the lead conductors that lead out the external connection ends from one end of each male terminal extend from the housing to the outside in order to connect to a plurality of connection portions provided on electrical components such as a wiring board. Provided. Also in this case, as in the present invention, a protruding portion is formed on a part of the lead conductor, and a gap for inserting the protruding portion is formed on the inner wall surface of the housing, thereby restricting the shake of the external connection end. be able to.

  Further, the present invention is not limited to the first and second embodiments, and a plurality of terminal accommodating chambers having a front opening into which a mating terminal is inserted are inserted from a rear opening of a housing arranged in a row through a partition, and the terminal A terminal housed in each of the housing chambers, and a lead conductor having an external connection end extending from one end of the terminal and drawn out from the rear opening, and a part of the side surface of the lead conductor 8 in the extending direction The structure of the terminal in which the overhang | projection part is formed is characterized.

  Further, the present invention is not limited to the first and second embodiments, and includes a front opening into which a mating terminal is inserted, a rear opening into which a terminal connected to the mating terminal is inserted, and terminals arranged in a row through a partition wall. Characterized in that the housing has a terminal receiving chamber, and a groove is formed in the inner wall surface connected to the rear opening, into which a protruding portion formed on the side surface of the lead conductor that leads the terminal to the outside is inserted. To do.

DESCRIPTION OF SYMBOLS 1 Connector 2 Housing 2d Bulkhead 3 Female terminal 4 Front opening 5 Terminal accommodating chamber 6 Back opening 7 Cylindrical terminal 8 Lead conductor 8a, 8b Overhang | projection part 9 External connection end 10 Bending part 11 Swing control protrusion 12a, b Square pillar protrusion 13a , B Square column projections 14a, 14b Groove 21 Runout control projections 22a, 22b Square column projections 23a, 23b Groove

Claims (5)

A plurality of terminal accommodating chambers having front openings into which mating terminals are inserted, and a plurality of terminals respectively accommodated in the terminal accommodating chambers from a rear opening of the housing; In each of the connectors, each of the terminals has an external connection end drawn out from the rear opening of the housing via a lead conductor.
In the lead conductor, a protruding portion is formed at a portion located in the housing,
The connector is characterized in that a gap is formed on the inner wall surface of the housing at a position corresponding to the projecting portion so that the projecting portion is inserted from the extending direction of the lead conductor. The lead conductor is formed of a strip conductor,
The overhang portions are a pair of overhang portions formed on both side surfaces of the strip-shaped conductor,
The gap is formed in a groove shape along the axial direction of the terminal accommodating chamber on the inner wall portion of the housing at a position corresponding to the pair of overhang portions, and a bottom surface with which the overhang tip of the overhang portion abuts is formed. The connector according to claim 1, wherein the connector is provided.   3. The lead conductor includes a crank-shaped bent portion formed by bending a portion where the projecting portion is formed outside the insertion path of the terminal. Connector.   A plurality of terminal accommodating chambers having a front opening into which a mating terminal is inserted are inserted from rear openings of housings arranged in a row through a partition, and are respectively accommodated in the terminal accommodating chambers, and from one end of the terminals And a lead conductor having an external connection end that is extended and drawn out from the rear opening, and a protruding portion is formed on a part of the side face of the lead conductor in the extending direction.   A front opening into which a mating terminal is inserted; a rear opening into which a terminal connected to the mating terminal is inserted; and a terminal housing chamber that is arranged via a partition and accommodates the terminal; A housing in which a groove into which an overhang formed on a side surface of a lead conductor for pulling out the terminal to the outside is inserted is formed in an inner wall surface connected to.

Images