JP2010277889A - Connector and manufacturing method for connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damages to a terminal at press-fitting regarding a connector and a manufacturing method for the connector. <P>SOLUTION: In a connector section 20 (connector) wherein press-fitting of a plurality of terminals 30 is carried out by pushing a terminal holder 40 for retaining the plurality of terminals 30, made of a square wire material set parallel, the connector section has a housing 21 arranged by penetrating a plurality of press-fit holes 25, the plurality of terminals 30 with first projections 31 press-fitted and retained inside the press-fit holes 25, and second projections 32 arranged closer on the terminals 30, at a press-fit direction rear side than the first projection 31 and retained by the terminal holder 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connector and a method for manufacturing the connector.

  Conventionally, for example, a connector described in Patent Document 1 below is known as a connector in which a plurality of terminals made of a wire rod are press-fitted into a housing. This is delivered in a state where a plurality of terminals are held in parallel by the terminal holder, remove the terminals one by one from the terminal holder and set in the press machine, after all the terminals are set in the press machine, It is manufactured by press-fitting these terminals into the housing at once.

  Moreover, the thing of the following patent document 2 is known as a manufacturing apparatus of the connector which punched out and hold | maintained the several terminal which consists of a wire, and pressed it in as it is. In this manufacturing apparatus, a plurality of terminals are inserted in a state where they are connected by a carrier, a plurality of terminals are punched into individual pieces with a punch and a die, each terminal is held by a holding means, and these terminals are collectively put in a housing. The connector is manufactured by press fitting.

Japanese Patent Laid-Open No. 7-230853 Japanese Patent Laid-Open No. 10-27667

  However, in the manufacturing method described in Patent Document 1, it is necessary to remove the terminals one by one and set them in the press-fitting machine, and the terminals may be damaged by handling. Moreover, in the manufacturing apparatus described in Patent Document 2, the terminal is directly sandwiched and held between the terminal receiving member and the terminal pressing member, and press-fitted as it is. Therefore, for example, the terminal together with the metal piece generated at the time of punching When holding the terminal, the trace of the metal piece may be transferred to the terminal, and the terminal may be damaged.

  The present invention has been completed based on the above circumstances, and an object thereof is to prevent damage to terminals during press-fitting.

  The present invention is a connector in which a plurality of terminals are press-fitted by pushing in a terminal holder that holds a plurality of terminals made of wire in parallel, a housing having a plurality of press-fitting holes provided therein, and a press-fitting hole And a plurality of terminals having first protrusions that are press-fitted and held inside, and a second protrusion that is provided behind the first protrusions in the press-fitting direction and is held by the terminal holder. It has the characteristics.

  Further, the present invention is a method for manufacturing a connector in which a plurality of terminals made of a wire rod are press-fitted into a housing, wherein the plurality of terminals are held in parallel by the terminal holder, and the end surface of the terminal holder in the press-fitting direction is pushed in. A feature is that a plurality of terminals are collectively press-fitted into a plurality of press-fitting holes provided through the housing.

  If it does in this way, since a terminal can be press-fit inside a press-fit hole by pushing in an end face of a terminal holder, and it is not necessary to push in a terminal directly, damage to a terminal at the time of press-fit can be prevented. Specifically, a plurality of terminals are held in parallel by holding the second protrusion on the terminal holder, and the first protrusion is press-fitted and held inside the press-fitting hole. Accordingly, since the second protrusion and the terminal holder holding the second protrusion are accommodated in the accommodating portion, the terminal holder may be removed from the second protrusion after press-fitting. Therefore, it is possible to press-fit all together while preventing damage to a plurality of terminals.

The following configuration is preferable as an embodiment of the present invention.
The housing may have a hood portion that can house the mating connector therein, and a housing portion that has an inner wall that interferes with the terminal holder when press-fitted is provided on the back wall of the hood portion.
According to such a configuration, it is easy to manage the press-fitting amount of the terminal by setting the press-fitting to be completed by pushing the terminal holder until it interferes with the inner wall of the housing portion.

The housing portion may be configured to be opened inside the hood portion.
According to such a configuration, it is possible to prevent the second protrusion housed in the housing portion from being exposed to the outside during fitting with the mating connector.

  According to the present invention, it is possible to prevent damage to the terminal during press-fitting.

Bottom view of the case body in the embodiment AA line sectional view of FIG. A plan view showing a state in which a plurality of terminals are held in parallel by a terminal holder Side view showing a state in which a plurality of terminals are held in parallel by a terminal holder BB sectional view of FIG. Sectional drawing which expanded and showed the connector part in FIG. Exploded perspective view of fixed part

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. In the present embodiment, as shown in FIG. 1, a connector portion 20 formed integrally with the case body 10 will be described as an example. As shown in FIGS. 1 and 2, the case body 10 has a substantially square box shape. A substrate (not shown) is attached to the lower side of the case body 10 (the front side in FIG. 1). Fixing portions 11 are provided at the four corners of the case body 10. The case body 10 is fixed to the body side by screwing the fixing portion 11 to the body side with a bolt (not shown).

  As shown in FIG. 7, the fixing portion 11 includes a nut 12 and a through hole 13 into which the nut 12 is press-fitted and held. The nut 12 is formed integrally with a hexagonal head portion 12A and a cylindrical portion 12B arranged coaxially with the head portion 12A, and a screw hole 12C is formed so as to penetrate the axis of these 12A and 12B. Has been. A screw groove is formed on the inner peripheral surface of the screw hole 12C. In addition, an uneven portion having a knurled shape is formed on the outer peripheral surface of the cylindrical portion 12B. This uneven part is bitten into the resin part constituting the through hole 13 by press-fitting.

  On the other hand, the through-hole 13 includes a hexagonal hole 13A that accommodates the head portion 12A of the nut 12 and a circular hole 13B that accommodates the cylindrical portion 12B in a press-fitted state. When the nut 12 is press-fitted into the through-hole 13, the head 12A is fitted into the hexagonal hole 13A, thereby preventing the nut 12 from rotating. Further, the cylindrical portion 12B is press-fitted into the circular hole 13B, whereby the movement of the nut 12 in the axial direction is restricted. As shown in FIG. 2, the lower end of the cylindrical portion 12B protrudes downward from the lower surface of the case body 10, and the lower end of the cylindrical portion 12 directly contacts the body side as the bolt is tightened. The case body 10 can be firmly fixed to the body side.

  The connector part 20 of this embodiment is what is called a board | substrate connector, Comprising: It connects so that it can conduct | electrically_connect with respect to the conductive path formed in the board | substrate surface. The connector part 20 has a housing 21 made of synthetic resin, and the housing 21 is provided with a hood part 22 that opens to the side of the case body 10. A mating connector (not shown) can be fitted inside the hood portion 22. The back wall 22 </ b> A of the hood part 22 refers to a part constituting the fitting surface 22 </ b> B with the mating connector among the parts constituting the hood part 22.

  The back wall 22A of the hood portion 22 has a plurality of terminals 30 made of rectangular wire penetrating therethrough, one end side 30A of the terminal 30 projects into the hood portion 22, and the other end side 30B of the terminal 30 is the back wall 22A. After being projected to the back side, it is bent at a right angle and projects downward. That is, the terminal 30 is substantially L-shaped, and both end sides 30A and 30B are extended in directions orthogonal to each other. The positioning plate 14 is inserted into the other end 30B of the terminal 30 so that the other end 30B of the terminal 30 can be accurately inserted into a through hole (not shown) formed in the substrate. It has become.

  The back wall 22 </ b> A is recessed with a receiving portion 23 that opens inside the hood portion 22. A second protrusion 32 described later is accommodated in the accommodating portion 23. Further, a terminal holding portion 24 is formed on the back side of the housing portion 23 in the back wall 22A. The terminal holding portion 24 is provided with a plurality of press-fitting holes 25 penetrating therethrough. The press-fit holes 25 in the present embodiment are configured to have four rows in the vertical direction and a plurality of rows in the width direction. Note that a mortar-shaped guide surface 26 is formed at the end of the press-fitting hole 25 that faces the accommodating portion 23. By making the other end side 30 </ b> B of the terminal 30 slidably contact with the guide surface 26, it is possible to guide when the terminal 30 is press-fitted into the press-fitting hole 25.

  The horizontal portion constituting the one end side 30 </ b> A of the terminal 30 includes a first protrusion 31 that is press-fitted and held in the press-fitting hole 25, and an accommodating portion in a state in which the first protrusion 31 is press-fitted into the press-fitting hole 25. 23 is provided with a second protrusion 32 housed in 23. Both protrusions 31 and 32 are arranged side by side in the axial direction of the terminal 30, and the second protrusion 32 is disposed closer to the one end side 30 </ b> A of the terminal 30 than the first protrusion 31. The first protrusion 31 is formed slightly larger than the press-fitting hole 25. For this reason, when the first protrusion 31 is press-fitted into the press-fitting hole 25, the first protrusion 31 bites into the inner wall constituting the press-fitting hole 25, and the first protrusion 31 is held inside the press-fitting hole 25.

  Now, the delivery form of the terminals 30 will be briefly described. As shown in FIGS. 3 and 4, a plurality of terminals 30 are delivered in a state where they are held in parallel by a belt-like terminal holder 40. The terminal holder 40 is obtained by processing a thin metal plate, and may be called by a name such as a band rear or a band holder (Japanese Patent Laid-Open No. 7-230853). The terminal 30 is held by the terminal holder 40 at the second protrusion 32. That is, as shown in FIG. 5, the terminal holder 40 is configured to include a band-shaped main body portion 41 and a hook portion 42 formed by cutting and raising a part of the main body portion 41 upward. . The hooking portion 42 has a hook shape, and its upper end protrudes in parallel with the main body portion 41.

  On the other hand, the second protrusion 32 is formed into a substantially cross-shaped cross section by pressing the four corners 33 of the terminal 30 made of a square wire. The laterally long portion 32A of the second protrusion 32 having a cross shape is longer than the lateral width of the terminal 30 before pressing. The upper surface of the horizontally long portion 32A is in contact with the lower surface of the protruding portion 42A of the hook portion 42. On the other hand, the vertically long portion 32B of the second protrusion 32 having a cross shape is the same as the height of the terminal 30 before pressing. The lower surface of the vertically long portion 32B is in contact with the upper surface of the main body 41. For this reason, the 2nd protrusion 32 is latched to the up-and-down direction with respect to the main-body part 41 and the hook part 42, and the movement to the up-down direction of the terminal 30 is controlled. Moreover, the corner | angular part 33 of the terminal 30 becomes a form which protrudes relatively with respect to the horizontally long part 32A and the vertically long part 32B as a result of press work. The protruding portion 42A of the hook portion 42 is locked in the axial direction of the terminal 30 with respect to the corner portion 33, and the movement of the terminal 30 in the axial direction is restricted.

  The plurality of terminals 30 held in the terminal holder 40 in this way are collectively press-fitted into the press-fitting holes 25 of the terminal holding part 24 from the inside of the hood part 22 as shown in FIG. At this time, as shown in FIG. 3, the pressing portion 50 of the press-fitting machine (not shown) is pressed against the end surface (the right side surface in FIG. 3, that is, the rear side surface in the press-fitting direction) 43 of the terminal holder 40. Is to be pushed in. As a premise of this, the latching portion 42 and the second protrusion 32 are latched with a sufficient latching force such that the latching portion 42 and the second protrusion 32 cannot be removed even if the pushing force is applied by the pushing portion 50. If it does in this way, since it is not necessary to make the pushing part 50 contact the terminal 30 directly, damage and deformation | transformation of the terminal 30 can be controlled.

  As shown in FIG. 6, when the terminal 30 is press-fitted into the press-fitting hole 25, the abutting surface (the surface opposite to the end surface 43, that is, the front surface in the press-fitting direction) of the terminal holder 40. ) 44 hits the terminal holding part 24, and the press-fitting of the terminal 30 is completed. That is, since the press-fit push-in amount of the terminal 30 can be defined by the interference position between the terminal holding portion 24 and the abutting surface 44, the push-in amount can be easily managed. After the press-fitting is completed, by removing the terminal holder 40 from the terminal 30, interference between the terminal holder 40 and the mating connector can be avoided. After completion of the press-fitting, the terminal 30 protruding from the terminal holding portion 24 to the back side is bent at a right angle downward, the positioning plate 14 is attached to the other end 30B of the terminal 30, and the other end 30B of the terminal 30 is attached to the substrate. The board 30 is fixed to the case body 10 while being inserted into the through hole of the terminal 30 and the other end side 30B of the terminal 30 is soldered to the through hole portion of the board so that the terminal 30 and the conductive path are connected to each other.

  The present embodiment is configured as described above. Next, a method for manufacturing the connector unit 20 will be described. First, the terminal holder 40 in which a plurality of hook portions 42 are formed in accordance with the terminal pitch and the number of terminals of the connector portion 20 is manufactured. If this terminal holder 40 is prepared, the 2nd protrusion 32 is hooked on the hook part 42, and the some terminal 30 is hold | maintained in parallel. Thus, the terminal 30 is delivered in the state in which the plurality of terminals 30 are held in the terminal holder 40. The operations so far are performed by the terminal manufacturer that manufactures the terminal 30.

  Next, after the terminals 30 are delivered while being held by the terminal holder 40, these terminals 30 are set at predetermined positions of the press-fitting machine without being removed from the terminal holder 40. At the same time, the connector 20 is also set at a predetermined position of the press-fitting machine. Then, the plurality of terminals 30 are collectively press-fitted into each press-fitting hole 25 while pressing the pressing portion 50 of the press-fitting machine against the end face 43 of the terminal holder 40. If it does in this way, since it is not necessary to make the pushing part 50 contact the terminal 30 directly, damage, a deformation | transformation, etc. of the terminal 30 can be prevented.

  Then, when the abutting surface 44 of the terminal holder 40 abuts against the terminal holding portion 24, the press-fitting operation is stopped, and the pushing portion 50 is retracted outside the hood portion 22. If it does in this way, management of the press-fitting push amount of the terminal 30 becomes easy. Thereafter, the terminal holder 40 is removed from the terminal 30, and the other end 30 </ b> B of the terminal 30 is bent at a right angle to the lower surface side of the case body 10. In this way, the connector part 20 is completed.

  When the positioning plate 14 is attached to the other end side 30B of the terminal 30, the other end side 30B of the terminal 30 is positioned at a predetermined position, and when the board is attached, the other end side 30B of the terminal 30 is set to a predetermined through position. Inserted into the hall. Thereafter, the other end side 30B of the terminal 30 and the through-hole portion are soldered, whereby the terminal 30 and the conductive path of the substrate are connected so as to be conductive. Further, the case body 10 is fixed to the body side by bolting the fixing portion 11 to the body side.

  As described above, in the present embodiment, since the plurality of terminals 30 are held by the terminal holder 40 and the end surface 43 of the terminal holder 40 is pushed by the pushing portion 50, the terminal 30 is prevented from being damaged or deformed. It is possible to press-fit all at once. Further, the press-fitting completion timing can be known when the abutting surface 44 of the terminal holder 40 contacts the terminal holding portion 24. Furthermore, since the accommodating part 23 was opened and provided in the inside of the hood part 22, the 2nd protrusion 32 can be prevented from exposing outside at the time of a fitting with the other party connector.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the terminal 30 which consists of a square wire is illustrated in the said embodiment, according to this invention, it is good also as a terminal which consists of a round wire.
(2) Although the metal terminal holder 40 is used in the above-described embodiment, according to the present invention, it is sufficient if the terminal holder 40 has rigidity capable of withstanding by press-fitting. In that case, a resin terminal holder may be used.

(3) Although the first protrusion 31 and the second protrusion 32 have a cross-sectional shape in the above embodiment, according to the present invention, the first protrusion and the second protrusion have a horizontally long and flat cross-sectional shape. Also good.
(4) Although the first protrusion 31 and the second protrusion 32 have the same cross-sectional shape in the above embodiment, the first protrusion and the second protrusion may have different cross-sectional shapes according to the present invention.

(5) Although the housing 21 (that is, the male connector) having the hood portion 22 is used in the above-described embodiment, according to the present invention, the housing (that is, the female connector) having a substantially square block shape may be used.
(6) In the above embodiment, the terminal holder 40 is illustrated as interfering with the terminal holding part 24. However, according to the present invention, the inner wall that interferes with the terminal holder 40 may be formed separately from the terminal holding part 24. Good.

(7) In the above embodiment, the housing portion 23 is provided to be opened inside the hood portion 22, but according to the present invention, the housing portion may be provided to be opened inside the case body 10. Good.
(8) Although the connector portion 20 is formed integrally with the case body 10 in the above embodiment, according to the present invention, it may be a single connector.

10 ... Case body 20 ... Connector (connector)
DESCRIPTION OF SYMBOLS 21 ... Housing 22 ... Hood part 22A ... Back wall 23 ... Storage part 24 ... Terminal holding part 25 ... Press-fit hole 30 ... Terminal 31 ... 1st protrusion 32 ... 2nd protrusion 40 ... Terminal holder 43 ... End surface

Claims (4)

A connector in which the plurality of terminals are press-fitted by pushing in a terminal holder that holds a plurality of terminals made of wire in parallel,
A housing provided with a plurality of press-fitting holes therethrough;
A plurality of terminals having first protrusions press-fitted and held in the press-fitting holes;
A connector provided with a second projection provided on the rear side of the terminal in the press-fitting direction with respect to the first projection and held by the terminal holder.   The housing has a hood portion that can accommodate the mating connector therein, and a housing portion having an inner wall that interferes with the terminal holder in accordance with press-fitting is provided on the back wall of the hood portion. The connector according to claim 1.   The connector according to claim 2, wherein the housing portion is provided to be opened inside the hood portion. A method of manufacturing a connector for press-fitting a plurality of terminals made of wire into a housing,
Holding the plurality of terminals in parallel by the terminal holder,
A method of manufacturing a connector, wherein the plurality of terminals are collectively press-fitted into a plurality of press-fitting holes penetrating through the housing by pushing an end face on the rear side in the press-fitting direction of the terminal holder. .

Images