JPH0722865Y2 - Multi-pole connector - Google Patents

Description

[Detailed Description of the Invention] A. Industrial Application Field The present invention relates to a board-to-board connector, more specifically, a plug terminal for making an electrical connection between two printed circuit boards. A pair of connectors composed of a connector having and a connector having a receptacle terminal,
One connector is attached to one printed circuit board called a mother board, for example, and the other connector is related to a type of connector attached to the other printed circuit board called a daughter board, for example. More specifically,
According to the present invention, the motherboard on which one connector is mounted is fixed to the housing of the device, and the other connector mounted on the daughter board is fitted to the connector on the mother board and then the daughter board is mounted. The present invention relates to a board-to-board connector capable of absorbing the deviation of the position of a daughter board when the position of the daughter board is deviated from a predetermined position when the daughter board is mounted on a housing of a device.

B. Conventional Technology A conventional board-to-board connector connects a stacking type connector in which two printed circuit boards are stacked and interconnected, and two printed circuit boards that are positioned perpendicular to each other. Right angle type connectors and rotary type connectors that can position two printed circuit boards at any angle are known. These board-to-board connectors are press-fitted into an insulator housing and fixed. The solder tail of the connected connector is soldered to the through hole of the printed circuit board.
The pair of connectors that make up the two board connector is
They are independently fixed to the surfaces of the two printed circuit boards.

As mentioned above, board-to-board connectors are manufactured separately, with a pair of connectors each soldered to a separate printed circuit board. Therefore, a board-to-board connector, whether it is a stacking type, a right angle type, or a rotating type, is generally already mounted and fixed in a device when it is installed in the device, for example, a motherboard. After mating the soldered board-to-board connector with one of the soldered board-to-board connectors and the other soldered connector on the daughter board It is attached and fixed to. In such an assembly work, the assembly error range is strictly controlled so that there is no deviation between the position of the mounting means of the board and the position of the mounting means of the housing as the assembly error of the equipment is accumulated. Must be done. Because board-to-board connectors are generally small, multi-pole, and precisely made, they can be plugged into the plug and receptacle terminals by the inadvertent force applied to the solder tail from the printed circuit board. Since a problem of poor contact easily occurs between the board and the board, if careless adjustment of such positional deviation of the board is made, the board-to-board connector may be damaged due to the excessive force applied by the board. Alternatively, it causes a problem of poor contact.

In the above description, the meaning of "the positional deviation between the mounting means of the board and the mounting means of the housing" is further explained. For example, when mounting the horizontal board with screws, a foolishness for mounting the printed board The direction of the positional deviation of the board is such that the holes do not match the screw holes of the housing (horizontal deviation) or the printed board surface does not match the housing surface (vertical deviation). Care must be taken to include the three dimensions, namely the X, Y, Z directions. Therefore, in order to adjust the position of the shifted substrate to the aligned position, it is almost necessary to move the substrate in the three-dimensional direction. However, in this specification, in order to avoid redundancy, the positional deviation between the mounting means for mounting the substrate and the mounting means for the housing, which occurs when mounting the substrate, including all of these displacements in the three-dimensional directions, is as follows. , Simply referred to as “shift of substrate position”.

In the assembling process of the board-to-board connector as described above, the combination of the plug terminal and the receptacle terminal can be used to connect the three boards of the board without the problem of the contact failure of the board-to-board connector. There is known one type of board-to-board connector, a stacking type and a right angle type, capable of absorbing and correcting a positional deviation with respect to a direction. To explain this in detail, one plug-type connector forming this board-to-board connector extends at a right angle from the solder tail embedded in the insulator block and perpendicular to the plane of the printed circuit board. It has a plurality of elongated elastic strips juxtaposed with each other, and a flat contact portion having a large area is formed at a tip end portion of the strips. The other receptacle-type connector has a receptacle terminal with a vertical contact surface that contacts with the flat contact portion at the tip of this plug terminal.The receptacle terminal is incorporated in the insulator and is continuous with the solder tail. There is. As can be understood from the above structure, with the board-to-board connector fitted, for example, the displacement of the mounting position of the printed board (mounting board) on one side with one receptacle type connector mounted The plug-type connector mounted on the other printed circuit board (fixed-side board) can be adjusted to absorb the displacement of the position of the mounting-side board in all directions when moved for adjusting. That is, the positional deviation of the mounting side board parallel to the surface of the fixed side printed board and in one direction, the left-right direction (X direction), is absorbed and adjusted by the above-mentioned bending of the elastic strip, and the fixed side The displacement of the mounting-side board in the direction parallel to the surface of the printed board and orthogonal to the left-right direction (X direction), that is, the front-back direction (Y direction) is caused by the flat contact of the tip of the plug terminal. Absorption is adjusted by sliding the vertical contact surface of the receptacle terminal back and forth with respect to the portion. Similarly, in the vertical direction (Z
The displacement of the mounting side substrate in the (direction) is absorbed and adjusted by the vertical contact surface of the receptacle terminal sliding up and down with respect to the flat contact portion at the tip of the plug terminal.

C. Problem to be Solved by the Invention In the above-described conventional connector, the displacement of the board in one direction is absorbed and adjusted by the spring of the connector, and the displacement of the board in two directions is detected at the contact portion. Since the absorption adjustment is performed, the contact portion at the tip of the plug terminal must have a large area, which inevitably increases the size of the receptacle terminal, which goes against reducing the diameter of the connector. Assembly is complicated.

Therefore, the object of the present invention is to eliminate the misalignment of the position of the two-way board.
It is an object of the present invention to provide a connector in which the size of the connector is reduced and the assembling is simplified by adjusting the absorption by the individual connectors.

D. Means for Solving the Problems In the connector of the present invention, a connector incorporated in one of the pair of connectors is integrally formed of a sheet metal material, and has two spring means. It is characterized in that the bending direction of the second spring means is perpendicular to the bending direction of the spring means. That is, the connector of the present invention is a multi-pole connector in which the contact portions of a plurality of connectors are press-fitted and fixed in the press-fitting holes in the cavity of the insulator housing.
Between the solder tail to be soldered to the through hole of the printed circuit board and the contact part, a beam part continuous to the solder tail, a slip-out preventing tongue engaging with the slip-out preventing means of the housing, and a parallel plate to the board surface. A lower U-shaped spring means that is flexible in a first direction and an upper U-shaped spring means that is flexible in a second direction that is parallel to the substrate surface and that is orthogonal to the first direction. It has a structure to prepare for.

E. Embodiment Referring to FIG. 1, there is shown a perspective view of a receptacle connector incorporated in the connector of the present invention, in which the top of the receptacle connector 29 is the plug terminal of the other connector (FIG. 3). A contact portion 10 for contacting with is provided, and the contact portion 10 is composed of a pair of contact pieces 11, 11 ′ and a base portion 12. The base portion 12 of the contact portion 10 is the housing 31.
Is press-fitted into the press-fitting hole 32 (FIG. 3). The plug terminal 45 (FIG. 3) inserted between the contact pieces 11 and 11 'is inserted from above in FIG. There is an upper spring portion 13 having a U-shaped cross section formed by bending at a position substantially facing the contact portion 10, and a U-shaped lower spring portion 14 is continuous below the upper spring portion 13. The U-shaped portion of the upper spring portion 13 is flexible in the front-back direction with respect to the contact portion 10 (in the direction of the double-headed arrow Y in FIG. 1), while the lower spring portion 14 is It is necessary to call attention to the fact that the U-shaped portion of is flexible to the left and right (in the direction of the double-headed arrow X in FIG. 1). The details will be described later.

A member extending downward from the lower member of the lower spring portion 14
16 forms a pair of beam portions 15 and 18. The beam portion 15 is composed of a part of the lower spring 14. A pair of slip-out preventing tongue pieces 17 and 17 'are provided toward the outside of the member 16.
A solder tail 20 is provided at the end of the beam portion 18. The solder tail 20 is inserted into the through hole of the printed board 27 (FIG. 3) and soldered. Receptacle connector 29
By pressing the sheet metal material
The carrier 21 is integrally formed by being connected to the carrier 21, and the carrier 21 is wound on a reel and stored.

Referring to FIG. 2, there is shown a perspective view of an insulator housing 31 for collectively press-fitting and fixing the receptacle connector 29 of FIG. 1 to make a connector 30. FIG. 3 is a sectional view of the connector 30. In order to simplify the following description,
The right side is described as the front part of the connector, the left side is the rear part, and the upper side is the top part, the lower side is the bottom part as already suggested, and both surfaces in the direction perpendicular to the plane of the drawing are the right side part and the left side part, respectively. . A plurality of connectors 29 are collectively inserted into the respective cavities 38 from the rear of the housing 31,
The base portion 12 of the contact portion 10 of the connector 29 is press-fitted and fixed in the connector fixing hole 32 of the housing 31, and then the connector 29 is separated from the carrier 21 at the cutting portion 22 (FIG. 1). In the connector 30 of the present invention, the base portion 12 of the contact portion 10 is
The fixing hole 32 and the fixing hole 32 are the only parts between the connector 29 and the housing 31.
It is necessary to call attention to the fact that it is a fixing means of.
Further, the solder tail of the connector of the embodiment shown in FIG. 3 is inserted into the through holes arranged in two rows in a zigzag pattern on the surface of the printed circuit board 27.
Since it is necessary to stagger them alternately like 20 ',
The position of the solder tail 20 of the connector 29 shown in FIG.
Two types are used, one shown and one extending directly from member 16.

Two shelves, that is, an upper shelf 38 and a lower shelf 34 are provided in a cavity 38 of the housing 31, and the upper shelf 33 is provided.
Is fitted in the U-shaped groove of the lower spring 14 of the connector, and the lower shelf portion 34 is fitted between the beam portions 15 and 18. Therefore, in the structure formed by combining these members, the lower spring 14 and the beams 15 and 18 can be easily moved in the direction of both side surfaces of the connector along the upper shelf 33 and the lower shelf 34. However, the structure does not easily move up and down and front and back of the connector.

Referring to FIGS. 2 and 4, it can be seen that the lower portion of the housing 31 is provided with a stopper block 41 having a tapered cross-section toward the cavity 38 and having a pyramid-shaped cross section. As is apparent from the partial view of FIG. 4, the slip-out preventing tongues 17 and 17 'of the connector 29 are compared with each other in the cavity 38 along the taper surface of the slip-out preventing block 41 due to their own elasticity. Can be easily inserted, but after insertion, the tongue piece
Since the tips of 17, 17 'engage with the surface 42 of the block 41, the connector 29 does not come out of the cavity 38.

Next, the assembly of the board-to-board of the present invention will be described. The operation of the connector 30 of the present invention for absorbing and adjusting the displacement of the board will be described in the process of assembling the printed circuit board in the equipment casing (not shown). Therefore, the plug 45 of the plug-type connector mounted on the printed board 46 (mounting side board) shown in FIG. 3 is inserted into the contact portion 10 of the connector 30 to form a board-to-board connector. rear,
It is assumed that the printed circuit board 46 moves in order to correct the positional deviation of the other printed circuit board (mounting side substrate) 46 with respect to the fixed printed circuit board 27 (fixed side substrate).

The printed circuit board 46 is moved through the pin terminal 45 to the connector.
Will give the power to move 30. As already suggested in the above description, the size of the displacement of the mounting-side board 46 can be decomposed in three directions of X, Y, and Z, so that the position of the board disassembled in each direction can be determined. The shift will be described below, and thereby the function of the connector 30 mounted on the fixed-side substrate 27 to properly absorb the external force received by the correction of the shift of the mounting-side substrate 46 will be described. Here, in order to explain the relationship between the displacement of the board and the movement of each part of the connector 30, for the sake of convenience, it is parallel to the surface of the fixed-side board 27 shown in FIG. 3 and parallel to the row of the solder tails 20. Direction (that is, the longitudinal direction of the connector 30) is the X direction, a direction parallel to the surface of the substrate 27 and orthogonal to the X direction is the Y direction, and a direction perpendicular to the substrate 27 is the Z direction. .

The component of the displacement of the mounting substrate 27 (the magnitude of the displacement in one direction of the displacement of the substrate 27) is X with respect to the fixed substrate 27.
U-shaped lower spring 14
The upper beam of B bends more in the X direction than the lower beam,
By moving in the cavity 38, the displacement of the substrate can be absorbed and adjusted. Further, if the component of the displacement direction of the mounting side substrate 27 includes the displacement in the Y direction, the upper beam of the U-shaped upper spring 13 bends in the Y direction more than the lower beam, and in the cavity 38, By moving, it is possible to absorb and adjust the displacement of the substrate. If the component of the displacement of the mounting substrate 27 includes the displacement in the Z direction, the absorption can be adjusted by the contact margin of the pin 45, that is, the relative movement of the pin 45 and the contact portion 10.

When correcting the above-mentioned displacement of the mounting position, the force in the Y direction, out of the forces in the lower spring 14 of the connector 29 other than the X direction, is fixed via the fixing hole 32 of the housing. It is received by the strips 17 and 17 'and the surface 42) of the block and the beam 15, and the force in the Z direction is received by the shelves 33 and 34 of the housing, so that the connection spring portion 14
However, care must be taken to protect it from deformation. Further, by providing a shelf portion sandwiching the cut surface of the upper spring 13, the upper spring 13
Similar protection can be provided. As described above, the displacement of the mounting side substrate is absorbed by the bending of the upper and lower springs 13 and 14 in the two directions of X and Y, and is absorbed by the contact margin of the pin terminal in the Z direction. Therefore, the board-to-board connector can be safely and easily irrespective of the direction in which the position of the board is displaced without applying an unreasonable force to the contact piece of the contact part of the board-to-board connector.
It was understood that the installation of

Although the connector 30 described above has been described as a receptacle-type connector, changing the structure of the contact portion 10 to a pin-type contact portion is a change obvious to those skilled in the art, and will not be described further. Also, an example was shown in which the mounting side board was assembled after the mounting side board connector was fitted to the fixed side board connector. The connector of the present invention can be effectively used for an assembly method of forming a board-to-board connector by fitting a pair of connectors.

F. Effect of the Invention As described above, the connector of the present invention creates a structure in which the displacement of the board in the two directions can be absorbed by one integrated connector. The shape of the plug can be freely designed, and the assembly of the connector can be simplified.

Further, the connector of the present invention has a structure in which the U-shape of the lower spring and the U-shape of the upper spring are oriented in the same direction, and the lower spring is formed by punching.
Good flexibility can be easily given to the lower spring, and it can be fixed side by side in the thickness direction of the lower spring, so that it has an advantageous structure for the design of a small connector that requires a narrow connector pitch. ing.

[Brief description of drawings]

1 is a perspective view of an embodiment of a connector according to the present invention, FIG.
FIG. 3 is a perspective view of a housing for assembling the connector of the present invention, FIG. 3 is a sectional view of a connector according to the present invention, and FIG. 4 is a view for explaining a structure for locking the connector in the housing. FIG. 4 is a partial perspective view of the connector shown in FIG. 3. 10 …… contact part, 12 …… base part of contact part, 13 …… upper spring, 14 …… lower spring, 15, 18 …… beam part, 17,
17 ′ …… Prevention tongue piece, 20 …… Solder tail, 2
7,46 …… Printed circuit board, 31 …… Housing, 32 …… Housing fixing hole, 38 …… Cabiday, 45 …… Pin terminal, 44 …… Pin guide hole.

Claims (1)

[Scope of utility model registration request] 1. A plurality of connector fixing holes provided inside an insulator housing for accommodating and holding a connector having a contact portion at an uppermost end and a solder tail at a lowermost end. In a multi-pole connector having only one fixing means for each connector in which the base part of the contact part of the connector is press-fitted and fixed, relative contact in two directions orthogonal to each other between the contact part and the solder tail. In order to absorb and adjust the displacement, the connector has a U-shaped upper spring formed by bending so as to obtain flexibility in the first direction in which the base portion is press-fitted, and the U-shaped upper spring. A U-shaped lower spring formed by punching so as to form a U-shape in the same direction as the U-shaped upper spring through a processed portion bent from the upper spring, and the U-shaped lower spring. And a solder tail, and the detachment prevention means is integrally provided, and the detachment prevention means is moved by the movement in the first direction between the contact portion and the solder tail. A multi-pole connector having a tongue engaging with the insulator housing to prevent the connector from coming out of the insulator housing.