JP2007066614A - Connector for substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for substrates which ensures an easy positioning work, and thereby improving workability. <P>SOLUTION: This connector 1 for the substrates comprises a connector housing 10, terminal fittings 20, and guide portions 30. The connector housing 10 has a pair of guide portions 30, 30 protruding downward from the under face at the backend and at both ends in a width direction. Both guide portions 30, 30 are located at outer portions than those of both fittings 20A, 20A, respectively, and formed integrally with the connector housing 10 by insert-forming. Each guide portion 30 is formed as a screw plug being screwable with a lock nut 32. The lower end 31 of each guide portion 30 is configured to be at a lower place than the lower end 21 of any terminal fitting 20, thereby the positioning of the connector housing 10 is made possible. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a board connector.

Conventionally, the thing of patent document 1 is known as an example of the connector for boards. When fixing a connector housing with terminal fittings to a printed circuit board (hereinafter simply referred to as a board), a board fixing part that protrudes sideways is integrally formed at the lower ends of both side surfaces of the housing. The screw is tightened with respect to the screw hole formed in the portion.
JP-A-6-203896

  However, in the case of fixing to the board by screwing in this way, positioning is performed by inserting one end of the terminal fitting directed from the connector housing to the board into the through hole of the board prior to screwing. It was difficult to align the terminal fittings of the book to the through holes all at once.

  The present invention has been completed based on the above-described circumstances, and it is an object of the present invention to simplify positioning work and thereby improve workability.

  As means for achieving the above object, the invention of claim 1 is characterized in that the connector housing is provided with a terminal fitting, and one end of the terminal fitting protrudes outside the connector housing and is then folded back toward the board. In a connector for a board that is fixed by soldering one end side of the terminal fitting to the board after being inserted in a through hole arranged in the board, the guide is directed toward the board in the connector housing And a guide hole into which the guide portion can be inserted is provided in the board so as to penetrate the terminal fitting. A feature is that the guide portion is inserted into the guide hole before one end of the metal fitting is inserted into the through hole.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the guide portion is a screw shaft and is screwed to the substrate.

  The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the guide portion is integrally formed with the connector housing by insert molding.

  According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, the plurality of terminal fittings are arranged along the width direction of the connector housing, and the guide portion is the connector housing. And at least both ends in the width direction of the connector housing.

<Invention of Claim 1>
According to the first aspect of the present invention, since the guide portion of the connector housing is positioned by inserting it into the guide hole of the board, it becomes easy to insert the terminal fitting into the through hole that is made thereafter, and thus the workability is improved. It is possible to improve.

<Invention of Claim 2>
According to the second aspect of the present invention, since the guide portion is a screw shaft and is screwed to the board, the positioning of the connector housing and the fixing to the board can be combined with one member. The structure can be simplified.

<Invention of Claim 3>
According to the invention of claim 3, since the guide portion is integrally formed with the connector housing by insert molding, the guide portion is provided as a separate body and is simpler than the case where it is retrofitted to the connector housing. It is possible to provide.

<Invention of Claim 4>
According to the invention of claim 4, since the guide portions are arranged in a pair at least at both ends in the width direction of the connector housing, when the connector housing is elongated in the width direction as the number of poles increases, The arrangement is advantageous in positioning.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The board connector 1 according to the first embodiment includes a connector housing 10, a terminal fitting 20, and a guide portion 30. In the following description, the front-rear direction refers to the front side with respect to the direction orthogonal to the paper surface in FIG. 1, the up-down direction refers to the upper side with reference to the up-down direction in FIG. 1, and the width direction refers to the figure. 1 as a reference.

  As shown in FIG. 3, the board connector 1 of the present embodiment is placed on the board B, and a guide portion 30 is inserted into a guide hole G to be described later and screwed, and a terminal fitting 20 is described later. It is inserted into the through-hole T to be connected to be conductive by flow soldering.

  The connector housing 10 is made of a synthetic resin and is formed in a horizontally long block shape as a whole as shown in FIG. 1 or FIG. Inside the connector housing 10 is formed a hood portion 11 into which a mating female connector housing (not shown) is fitted. On the inner peripheral surface of the hood portion 11, eight guide concave portions 15 are formed in the front-rear direction. The guide recesses 15 are arranged at four locations on the upper surface side and the lower surface side, respectively, and are arranged differently on the upper surface side and the lower surface side. A guide protrusion (not shown) provided in the female connector housing along the front-rear direction can be inserted into the guide recess 15 to restrict the erroneous fitting in the vertical direction of the male and female connector housings. I am guiding you. Further, a locking projection 16 is formed at the front edge of the upper surface of the inner peripheral surface of the hood portion 11 and at a substantially central portion in the width direction. When the male and female connector housings are properly fitted, the male and female connector housings can be locked in a locked state by a lock arm (not shown) of the female connector housing being elastically locked to the locking protrusion 16. It has become.

  As shown in FIG. 1, a terminal lead-out portion 13 is formed in the back wall 12 of the hood portion 11 in a shape that is long in the width direction and is divided into two upper and lower stages. As shown in FIG. 4, a terminal guide surface 14 having an opening diameter gradually increasing toward the rear is formed at a position corresponding to the terminal lead-out portion 13 on the rear surface side of the back wall 12. The terminal guide surface 14 provides guidance when the terminal fitting 20 is press-fitted into the back wall 12 from behind.

  The terminal fitting 20 has a needle shape with a substantially square cross section and is bent into a substantially L shape. The terminal fitting 20 has a tapered shape at both ends, and is pressed into the back wall 12 from behind and is mounted in a penetrating state. The rear end side of the terminal fitting 20 protrudes rearward from the back wall 12, and after the upper stage side extends to a rear position from the lower stage side, both are bent downward at a substantially right angle and directed toward the substrate B. The lower end 21 (corresponding to the tip of one end of the terminal fitting in the present invention) 21 of the terminal fitting 20 is set so that the height position is the same on both the upper side and the lower side. On the other hand, the front end side of the terminal fitting 20 is drawn forward from the terminal lead-out portion 13, and the protruding length from the terminal lead-out portion 13 is set to be the same on both the upper stage side and the lower stage side.

  A pair of guide portions 30, 30 project downward from both ends in the width direction at the rear end of the lower surface of the connector housing 10. In the present embodiment, both guide portions 30, 30 are located outside both terminal fittings 20 </ b> A, 20 </ b> A located at both ends in the width direction, and are integrally formed with the connector housing 10 by insert molding. Moreover, the guide part 30 is made into the screw shaft, and the fixing nut 32 can be screwed together. A lower end 31 (corresponding to the front end of the guide portion in the present invention) 31 of the guide portion 30 has a sharp shape and is set to be positioned below the lower end 21 of the terminal fitting 20.

  On the other hand, a through hole T is disposed in a position corresponding to the terminal fitting 20 in the substrate B, and a guide hole G is disposed in a position corresponding to the guide portion 30 in the substrate B in the same manner. The inner diameter of the guide hole G is almost the same as or slightly larger than the diameter of the guide portion 30, but is set larger than the inner diameter of the through hole T. As a result, when the board connector 1 is placed on the board B, the guide portion 30 is inserted into the guide hole G, and then the lower end 21 of the terminal fitting 20 is inserted into the through hole T as shown in FIG. The board connector 1 can be fixed onto the board B by screwing the fixing nut 32 into the guide portion 30 from the lower surface side of the board B.

The present embodiment has the above-described structure, and the operation thereof will be described subsequently.
First, the board connector 1 is placed on the board B. When the board connector 1 is placed on the board B, the guide portion 30 is inserted into the guide hole G for positioning. At this time, since the inner diameter of the guide hole G is larger than the inner diameter of the through hole T, the guide portion 30 can be inserted into the guide hole G more easily than the lower end 21 of the terminal fitting 20 is inserted into the through hole T. Is possible. Thus, when positioning is performed by inserting the lower end 31 of the guide portion 30 into the guide hole G, the lower end 21 of the terminal fitting 20 is positioned almost directly above the through hole T as shown in FIG. Here, since both guide parts 30 and 30 are arranged and positioned outside both terminal metal fittings 20A and 20A located at both ends in the width direction, they are regions inside both guide parts 30 and 30, that is, terminals. Positioning is reliably ensured for the region where the metal fitting 20 is disposed. Therefore, positioning can be performed much more efficiently than the case where the lower end 21 of the terminal fitting 20 is directly inserted into the through-hole T without positioning the guide portion 30, and workability can be improved. Become.

  Next, a fixing nut 32 is tightened to the lower end 31 of the guide portion 30 in order to screw the board connector 1. As a result, the board B is sandwiched between the lower surface of the connector housing 10 and the fixing nut 32 and the board connector 1 can be fixed onto the board B.

  As described above, in the present embodiment, the lower end 31 of the guide portion 30 is inserted into the guide hole G before the lower end 21 of the terminal fitting 20 is inserted into the through hole T. Therefore, it becomes easy to insert the lower end 21 of the terminal fitting 20 into the through hole T, and the workability can be improved. Further, since the guide portion 30 is a screw shaft and is screwed to the board B, the positioning of the connector housing 10 and the fixing to the board B can be combined with one member, and the entire structure Can be simplified. Further, since the guide portion 30 is integrally formed with the connector housing 10 by insert molding, the guide portion 30 is provided as a separate body, and is provided more easily than the case where it is retrofitted to the connector housing 10. Is possible. In addition to these, a pair of guide portions 30 are arranged at least at both ends in the width direction of the connector housing 10, so that the positioning accuracy in the width direction of the connector housing 10 can be further increased. In addition, since the guide portion 30 is disposed at a position close to the terminal fitting 20 (position near the rear end portion of the connector housing 10), the positioning accuracy of the terminal fitting 20 with respect to the through hole T can be improved. . Further, since the lower end 31 of the guide portion 30 is lower than the lower end 21 of the terminal fitting 20, when the board connector 1 comes into contact with a foreign object in a single unit before the board connector 1 is mounted on the board B, This also contributes to the protection of the terminal fitting 20.

<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In the first embodiment, a pair of guide portions provided at both ends in the width direction of the connector housing is exemplified. However, a pair of guide portions may be provided at least at both ends in the width direction of the connector housing. In addition to this, it may be additionally provided.

  (2) In the first embodiment, the guide portion is a screw shaft and is fixed to the substrate by a fixing nut. However, the guide portion is not limited to the screw shaft as long as it can be fixed to the guide hole, and the guide portion is radially The structure may be compressible toward the inside, and may be inserted into the guide hole in a press-fitted state.

  (3) In the first embodiment, the guide portion is provided integrally with the connector housing by insert molding. However, the guide portion may be provided separately and retrofitted to the connector housing.

  (4) In the thing of Embodiment 1, it does not prevent attaching the alignment plate for posture correction of a terminal metal fitting to the rear part of a connector housing.

The partially notched front view which shows the state before mounting the board | substrate connector in the board | substrate in Embodiment 1. FIG. The partially notched front view which shows the state in which the guide part was inserted in the guide hole in Embodiment 1. The partially notched front view which shows the state which mounted the board | substrate connector in the board | substrate in Embodiment 1. FIG. Sectional drawing which shows the state which mounted the board | substrate connector in the board | substrate in Embodiment 1. The top view of the connector for substrates in Embodiment 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Board connector 10 ... Connector housing 20 ... Terminal metal fitting 21 ... The lower end of a terminal metal fitting (tip of one end side of a terminal metal fitting)
30 ... Guide part 31 ... Lower end of guide part (tip of guide part)
B ... Substrate G ... Guide hole T ... Through hole

Claims (4)

Terminal fittings are arranged on the connector housing, one end of the terminal fitting protrudes to the outside of the connector housing, is folded back toward the board, and is inserted in a through-hole arranged in the board, and then the terminal In the board connector for fixing by soldering one end side of the metal fitting to the board,
The connector housing is provided with a guide portion toward the board, the tip of the guide portion is set at a position protruding from the tip of one end side of the terminal fitting, and the guide portion can be inserted into the board. A board connector, characterized in that a guide hole is provided therethrough, and the guide portion is inserted into the guide hole before one end of the terminal fitting is inserted into the through hole. The board connector according to claim 1, wherein the guide portion is a screw shaft and is screwed to the board. The board connector according to claim 1 or 2, wherein the guide portion is integrally formed with the connector housing by insert molding. A plurality of the terminal fittings are arranged along the width direction of the connector housing, and a pair of the guide portions are arranged within a width dimension range of the connector housing and at least both ends in the width direction of the connector housing. The board connector according to claim 1, wherein the board connector is a board connector.

Images