JPH10308265A - Board mounting connector and electronic switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the mounting area, and to facilitate the fitting by providing plural U-shaped pins, of which one end is projected as a connector connecting terminal into a connector housing and of which the other end is mounted on a printed board as a printed board connecting terminal. SOLUTION: Pins 3, 4 are press fitted into through holes inside of a connector housing portion, and after bending them, a lower surface of the right and left bent ends of the pins 3, 4 are made to contact with a top surface of a printed board 11. In this condition, side surfaces of the pins 3, 4 are soldered onto the printed board 11 by surface mounting. With this structure, the connector can be mounted on the printed board 11, and furthermore, a signal line can be connected to the pin. With this structure, at the time of fitting the connector to the printed board 11, connection of a signal line and physical fixation of the connector are performed at the same time. The number of connection part is thereby reduced, and assembling man-hour of the connector itself is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector mounted on a printed circuit board and an electronic switch used for detecting steel balls such as pachinko balls.

[0002]

2. Description of the Related Art In a pachinko machine or the like, a contact type micro switch or a non-contact type electronic switch is used as a detecting means for detecting a winning ball. The electronic switch includes a detection coil and an oscillation coil, a proximity switch that detects a steel ball passing through a predetermined position according to a change in oscillation state, and a photoelectric switch that includes a light emitting and receiving element and detects the steel ball by blocking light. Switches are used. FIG. 20 is a perspective view showing an example of a conventional contactless electronic switch. A printed circuit board 102 is mounted in a case 101 having a through hole through which a steel ball passes, and passes through the through hole on the printed circuit board 102. A detection circuit for detecting a steel ball is mounted. As shown in the figure, one end of the printed circuit board 102 is exposed to output a switch signal from the end of the case, and a connection pattern is formed on the printed circuit board. In addition, in order to make the printed circuit board detachable with a connector without directly exposing the same, an electronic switch provided with a connector 103 for dip solder mounting on a printed circuit board 102 behind a case 101 as shown in FIG. As shown in the drawings, an electronic switch having a surface-mounting connector 104 is known.

FIG. 23 is a perspective view showing a male connector for surface mounting and a female connector attached to this connector. The surface mounting connector 110 has a terminal portion provided on a housing 111 as shown in the figure, and is mounted so that the side surface and the lower surface are surface mounted on a pattern of a printed circuit board 112. The pins 113 and 114 bent in a crank shape have their central portions held by the connector housing and one end mounted on a printed circuit board. By inserting the female connector 120 into the housing 111, it is connected to one end of the pins 113 and 114.

[0004]

However, such a conventional electronic switch has a drawback that when a connector is attached, the connector is exposed outside the case. Also, if the connector is simply mounted on the board, the stress at the time of inserting and removing the female connector from the connector and pulling the electric wire will be directly received by the soldered part, reducing the reliability as a connector. There were drawbacks. Also, in the case of the surface mounting connector shown in FIG.
4 protrudes from the inner surface of the connector case and needs to be soldered to the printed circuit board 112. Therefore, there are disadvantages that the length of the connector in the insertion / removal direction is long, the mounting area is large, and the electronic switch must be large. Also, since surface mount connectors have pins for the number of poles and fixing terminals for fixing the connector itself to the printed circuit board, the number of components is larger than connectors mounted directly on the board, and the number of assembly steps for the connector itself is increased. There was a disadvantage that it would. Further, since the pins are generally mounted by press-fitting or insert methods, it is necessary to secure the thickness of the molded part to a certain value or more, and there is a disadvantage that the connector itself cannot be reduced in size.

The present invention has been made in view of such conventional problems, and the inventions of claims 1 to 3 of the present application can be easily mounted on a printed circuit board with a reduced mounting area. The purpose is to provide a connector. It is another technical object of the present invention to reduce the size of the electronic switch and secure the mounting strength by using such a connector.

[0006]

According to a first aspect of the present invention, there is provided a connector housing, one end of which is projected into the connector housing as a connector connection terminal, and the other end is mounted on a printed circuit board as a printed circuit board connection terminal. And a plurality of U-shaped pins.

According to a second aspect of the present invention, in the first aspect of the present invention, the pins are mounted on a surface of a printed circuit board.

According to a third aspect of the present invention, there is provided a connector mounted on a surface of a printed circuit board, comprising a connector housing for holding two-pole pins, one end of each of the pins being used for signal connection and connector fixing, respectively. It is characterized in that it is surface-mounted on a printed circuit board, and the other end is used as a connection terminal.

According to a fourth aspect of the present invention, there is provided an electronic switch having a printed circuit board on which a detection circuit unit for detecting an object is mounted, and a case for housing the printed circuit board, wherein a printed circuit mounting the detection circuit unit is provided. A connector housing mounted on the substrate and having a plurality of pin holding portions, and a pin partially fixed to the connector housing so that one end protrudes into the connector housing portion;
And the other end of the pin is connected to the printed circuit board.

According to a fifth aspect of the present invention, in the electronic switch of the fourth aspect, a case having a through hole, a coil mounted around the through hole of the case, an oscillation circuit including the coil, and a printed circuit are provided. A detection circuit unit mounted on a substrate, for detecting a change in the oscillation state of the oscillation circuit, and a steel ball detection electronic switch for detecting a steel ball passing through a through-hole. Things.

According to a sixth aspect of the present invention, in the electronic switch of the fourth aspect, the case has a base for holding a printed circuit board, and a notch corresponding to a surface of the connector housing, and the case has the same cutout. And a cover forming a surface, and a step portion that contacts the cover is formed at an inner end of the case of the connector housing.

According to a seventh aspect of the present invention, in the electronic switch of the fourth aspect, the connector housing has an engaging portion that engages with one end of the case, and the pull strength of the female connector that engages with the pin is reduced. It is characterized by holding.

[0013] Claims 1 to 1 of the present application having such features.
According to the third aspect, one end of the pin is projected as a connection terminal into the inside of the connector housing, and the other end is mounted on the printed circuit board. According to the third aspect of the present invention, a part of the pin is further held by the connector housing. This allows both fixing of the connector housing and connection of the signal lines. The electronic switch according to the invention of claims 4 and 5 applies this connector to an electronic switch. In claim 6, when the female connector is mounted on the connector housing, the connector on the electronic switch side receives a pressing force. However, by forming a stepped portion in contact with the cover at the end of the connector housing, the strength can be ensured even when a pressing force is received. Further, according to the invention of claim 7, it is possible to ensure the pull-out strength when pulling out the female connector.

[0014]

FIG. 1 is a view showing a connector for mounting a board according to a first embodiment of the present invention, wherein (a) is a top view, (b) is a front view, and (c) is a view. It is a bottom view.
2A is a rear view of the connector 1A, FIG. 2B is a side view, FIG. 2C is a cross-sectional view of a central portion, and FIG. 3 is a perspective view. As shown in these figures, the connector 1A is configured by press-fitting the male pins 3 and 4 into the connector housing 2. As shown in the perspective view of FIG. 3, the connector housing 2 has a flat upper surface plate 2a having a substantially square upper surface and a flat flat plate 2b having a certain level difference therearound. Also flat plate 2b
Through holes 2c and 2d serving as pin holding portions are formed on the lower surface of the housing, and a housing portion 2e for holding the female connector is provided. As shown in FIGS. 1 and 3, the connector housing 2 has side plates 2f, which protrude left and right from the housing portion 2e, on the left and right sides of an opening portion which comes into contact with the female connector.
2g are provided, and square notches 2h and 2i are formed in lower corners thereof as shown in FIGS. As shown in FIG. 4, grooves 2j and 2k parallel to the upper plate 2a are formed on the inner wall of the housing 2e. Pin 3
As shown in FIG. 3 (a), reference numerals 4 and 4 are flat U-shaped metal members having one end 3a, 4a formed thin and the other end 3b, 4b formed thick. The pins 3 and 4 are press-fitted into the through holes 2c and 2d of the connector housing 2, respectively, and are bent at about 90 degrees at the center so as to contact the side wall of the housing portion 2e as shown in the figure.

FIG. 5 shows this connector 1 connected to a printed circuit board 11.
It is a perspective view which shows the state mounted above. After the pins 3 and 4 are pressed into the through holes 2c and 2d in the housing portion 2e of the connector 1 and bent as shown in FIG. 3, the left and right bent ends of the pins 3 and 4 are shown in FIG. 3b, 4b
Is brought into contact with the printed circuit board 11. By soldering the side surfaces of the pins 3 and 4 on the printed board in this state by surface mounting or the like, the connector 1 can be mounted on the printed board 11 and the signal lines can be connected to the pins. In this way, when the connector 1 is mounted on the printed circuit board, both the connection of the signal lines and the physical fixing of the connector 1 can be used. Thus connector 1
Is connected on a printed circuit board, the number of connection points can be reduced, and the number of assembling steps of the connector itself can be reduced.

The female connector 12 is mounted on the male connector 1A on the printed circuit board 11 configured as described above, as shown in FIG. The female connector 12 has a substantially rectangular parallelepiped shape as shown in FIG. 5, and is inserted into an opening formed by the connector housing 2 of the connector 1A and the printed circuit board 11. The female connector 12 has linear projections 12 on the side walls corresponding to the grooves 2j and 2k of the connector housing.
a, 12b, and an engagement projection 12c is provided on the upper surface. In addition, an opening 12d as shown in the front,
12e are provided. Inside the female connector 12, a contact 14 connected to the cable 13 and a contact (not shown) are attached. As shown in a cross-sectional view at the time of connection in FIG. It is electrically connected by being sandwiched. In this embodiment, the printed circuit board 11 is used for the lower surface of the opening into which the female connector is inserted, so that the structure of the connector can be simplified. Furthermore, since the other ends 3b and 4b of the pins 3 and 4 along the side walls of the connector are connected to the printed circuit board 11, the length of the connector in the insertion direction can be made shorter than in the conventional example, and the connector 1A It is possible to reduce the area of the pattern occupying the printed circuit board.

Next, a second embodiment of the present invention will be described. FIG. 7 is an assembly configuration diagram of the connector 1B according to the second embodiment, and FIG. 8 is a perspective view mounted on a printed circuit board. As shown in these figures, the connector housing 2 itself is the same as that of the above-described first embodiment.
4 is replaced by pins 5 and 6. One end 5a, 6a of each of the pins 5, 6 is the same as 3a, 4a, and one end 5b, 6b connected to the printed circuit board.
Is thinner than that of the first embodiment. Also in this case, the pins 5 and 6 are formed in a U-shape, and one ends 5a and 5b are press-fitted into the through holes 2c and 2d of the connector housing 2 and the central portion thereof is bent. In this way, the ends 5b, 6b of the pins 5, 6 are connected to the housing 2e.
Will be located on the same plane as the lower surface of the side surface of. Therefore, as shown in FIG. 8, similar to the above-described first embodiment,
The bent lower surface can be mounted on the printed circuit board 11.

Next, a connector 1C according to a third embodiment of the present invention will be described. In the connector housing 7 according to this embodiment, as shown in FIG. 9, an upper plate 7a and a flat plate 7b having a certain level difference are formed around the upper plate 7a. The housing portion 7c is provided with slits 7d and 7e as pin holding portions as shown. The lower surface of the housing portion 7c has a bottom plate 7f. Furthermore, side plates 7g and 7h are provided on the side wall of the opening into which the female connector 12 is inserted, as shown in the figure. Also in this embodiment, pins 3 and 4 similar to those in the first embodiment are pressed into the connector housing 7. In the present embodiment, FIG.
As shown in (b), the U-shaped pins 3 and 4 are mounted on the printed circuit board 11 without being bent in a state of being inserted into the connector housing 2. In this case, as shown in FIG. 10A, a U-shaped notch 11a is formed in the printed circuit board 11 and is equal to the housing portion 7c of the connector 1C. Then, the connector housing 2 is mounted on the notch 11a of the printed circuit board 11, and the side surfaces of the pins 3 and 4 are surface-mounted on the printed circuit board to mount the connector. The hatched portions shown in FIG. 10A are portions that are connected to the ends 3b and 4b of the pins 3 and 4 by soldering.

Next, a description will be given of a fourth embodiment of the present invention in which the connector according to the first embodiment is applied to an electronic switch for detecting a steel ball. 11 is an assembly configuration diagram of the electronic switch for detecting a steel ball, FIG. 12 is a perspective view after assembly, and FIG.
Is a sectional view thereof. As shown in these figures, a coil spool 22 is integrally formed on a printed circuit board 21, and a coil 23 is wound around the coil spool 22. Then, on the printed circuit board 21, the coil 23
And a detection circuit section 24 for detecting a steel ball passing through the through-hole portion by a change in the oscillation state. The detection circuit section 24 is an electronic circuit section of a two-terminal type proximity switch in which a load and a power supply are connected in series to terminals, and a power supply and a switch output are connected to pins of a two-terminal type connector 1A. Reference numerals 25 and 26 denote shield thin plates that cover the coil 23. The base 27 has a through hole 27a and a holding portion 27b for holding the printed circuit board 21 as shown in the figure, and forms a housing of the electronic switch together with the cover 28. A recess 27 is formed at the corner of the through hole 27a of the base 27.
c, 27d are provided, and depressions 27e, 27f having projections are provided on the side surface of the holding portion 27b. Holder 27
A boss 27g is formed from the center of b toward the inside of the case. A U-shaped notch 27h for inserting the female connector is formed on the connector insertion side of the base 27. The cover 28 is provided with the through holes 28a and the engaging portions 2 at the four corners.
8b to 28e are provided, and the upper surface has a cutout 28f equal to the size of the upper surface plate 2a of the connector housing 2. Then, the shield thin plate 25, the printed circuit board 21, and the shield thin plate 26 are sandwiched on the base 27, and the engagement portions 28b to
28e is engaged and fixed. In this case, as shown in FIG. 12, an electronic switch for detecting a steel ball integrated with the case can be formed.

At this time, the notches 2h and 2i of the connector housing 2 shown in FIG. 4 are engaged with the ends of the notches 27h on the connector insertion side of the base. The step between the upper plate 2a and the flat plate 2b of the connector housing 2 is covered by a cover 28.
In contact with the opening part. By doing so, when the female connector 12 is inserted into the male connector 1, the connector 1A receives a pressing force as shown by the arrow A in the figure.
The step between the upper plate 2a and the flat plate 2b of the connector is the cover 2
Since the pressing force comes into contact with the end face of the printed circuit board 8, there is no possibility that the connector will fall off the printed circuit board 21. When the female connector 12 is pulled out from this connector, the connector 1A receives pressure in the direction of arrow B.
Since the end of the notch 27h of the base 27 engages with the notches 2h and 2i and receives the pressing force, the strength in the direction of arrow B can be secured.

Next, a description will be given of a fifth embodiment applied to an electronic switch for detecting a steel ball using a connector 1C according to a third embodiment of the present invention. 14 is an assembly configuration diagram of an electronic switch according to a fifth embodiment, FIG. 15 is a perspective view of the electronic switch, and FIG. 16 is a sectional view. In the electronic switch according to this embodiment, as shown in FIG. 9, after inserting the pins 3 and 4 into the connector housing 7, the connector 1C is mounted by surface mounting on the printed circuit board 21 without bending. In FIG. 14, the same portions as those of the above-described fourth embodiment are denoted by the same reference numerals, and detailed description will be omitted. In this embodiment, FIG.
In the same manner as described above, a substantially square notch equal to the housing 7c of the connector is formed in the printed circuit board 21. The base 27 also has a U-shaped deeper notch 27i formed in the insertion opening of the female connector as shown in the figure. Other configurations are the same as those of the third and fourth embodiments. In this way, the connector 1C can be electrically and mechanically fixed to the printed circuit board simply by connecting two points that are connection points when the connector 2C is mounted on the printed circuit board 21. When the female connector 12 is mounted, since the connector 1C and the cover are engaged as shown in FIG.
Strength can be secured. Even when the female connector 12 is pulled out, the bottom plate 7f of the connector 1C has the notch 27i.
Because it is in contact with the inner surface of the, the strength at the time of pulling can be secured.

Next, an electronic switch according to a sixth embodiment of the present invention will be described. FIG. 17 is an assembly configuration diagram of an electronic switch according to the sixth embodiment. In this figure, the same parts as those of the above-described embodiments are denoted by the same reference numerals, and detailed description is omitted. In this embodiment, as shown in FIG. 17, U-shaped pins 31, 32,.
Are provided. The pins 31, 32,... Are mounted on the printed circuit board 21 with their wide lower surfaces, and the upper portions bent in a U-shape are inserted into the contacts 14 of the female connector 12 as in the first embodiment. Use narrow terminals. Are arranged in parallel at the end of the printed circuit board 21. The base 27 has a notch 27j into which the female connector 12 is inserted as shown in FIG.
The fifth embodiment is the same as the fifth embodiment except that. The cover 33 has a through hole 33a and engagement portions 33b-33.
e. Further, a housing portion 33f is provided on the front surface where the female connector is inserted. As shown in a perspective view of the cover 33 from the bottom direction in FIG. 18, the housing portion 33f has an opening formed on the front surface, and is provided with two slits 34a and 34b in the insertion direction of the female connector.

Also in this embodiment, the printed circuit board 2
1. Shielding coil of electronic circuit mounted on 1
5 and 26, and attached to the base 27. When the cover 33 is attached, the pins 31 and 32 are
a and 34b, the base 27 and the cover 33 constitute a housing of the electronic switch. At this time, the cover 33
The bottom surface of the housing portion 33f is the printed circuit board 2 of each pin.
1 comes into contact with the surface mounted on the
32 can be pressed, and the terminal can be securely fixed.
Although this embodiment shows a state in which the two pins 31 and 32 are mounted on the printed circuit board 21, any number of pins can be used as long as they are mounted in parallel. In this case, it is needless to say that the number of slits in the housing portion of the cover needs to be equal to the number of pins.

In the fourth to sixth embodiments described above, the electronic switch for detecting a steel ball has been described. However, the present invention is not limited to such an electronic switch, but may include other types of proximity switches, photoelectric switches, and the like. It is needless to say that the present invention can be applied to a case where a connector is integrally attached to the end faces of various electronic switches.

[0025]

As described above in detail, according to the first to third aspects of the present invention, the pin is used as a pin for engaging with the female side of the male connector, and the other end is formed on the printed circuit board. Has been implemented. Therefore, there is an effect that the connector can be electrically and mechanically attached to the printed board simply by mounting the pins on the printed board. Therefore, mounting becomes easy and the mounting area can be reduced. According to the invention of claim 4, this connector can be used as a connector of an electronic switch. Furthermore, according to the invention of claim 6, when inserting the female connector into this connector, the pressure on the insertion side can be held by the case. Further, according to the invention of claim 7, when pulling out the female connector, an effect is obtained that the strength of the pull-out can be maintained by the case.

[Brief description of the drawings]

FIG. 1A is a top view of a board mounting connector according to a first embodiment of the present invention, FIG. 1B is a front view, and FIG. 1C is a bottom view.

FIG. 2 is a right side view of the board mounting connector according to the present embodiment, FIG. 2 (b) is a rear view thereof, and FIG. 2 (c) is a central longitudinal sectional view thereof.

FIG. 3A is a perspective view showing a connector housing of a connector for mounting a board according to the present embodiment and pins inserted therein, and FIG. 3B is a perspective view showing the connector.

FIG. 4 is a perspective view of the connector housing according to the present embodiment as viewed from the female connector.

FIG. 5 is a perspective view showing a state in which the connector according to the first embodiment is mounted on a printed circuit board.

FIG. 6 is a sectional view showing a state where the female connector is connected to the connector according to the first embodiment.

FIG. 7 is a perspective view showing a pin and a connector housing according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a state in which a connector according to a second embodiment of the present invention is mounted on a printed circuit board.

FIG. 9A is an assembly configuration diagram showing a connector according to a third embodiment of the present invention, and FIG. 9B is a perspective view thereof.

FIG. 10A is a view showing a cut-out state of a printed circuit board on which a connector according to a third embodiment of the present invention is mounted;
(B) is a perspective view showing a connector mounted on a printed circuit board.

FIG. 11 is an assembly configuration diagram of a photoelectric switch according to a fourth embodiment of the present invention.

FIG. 12 is a perspective view of the electronic switch according to the present embodiment.

FIG. 13 is a sectional view of the electronic switch according to the present embodiment.

FIG. 14 is an assembly configuration diagram of an electronic switch according to a fifth embodiment of the present invention.

FIG. 15 is a perspective view of the electronic switch according to the present embodiment.

FIG. 16 is a sectional view of the electronic switch according to the present embodiment.

FIG. 17 is an assembly configuration diagram of an electronic switch according to a sixth embodiment of the present invention.

FIG. 18 is a perspective view of the cover according to the present embodiment as viewed from the base side.

FIG. 19 is a perspective view of the electronic switch according to the present embodiment.

FIG. 20 is a perspective view showing an example of a first conventional electronic switch.

FIG. 21 is a perspective view of a second conventional electronic switch.

FIG. 22 is a perspective view of a third conventional electronic switch.

FIG. 23 is a perspective view showing a conventional board mounting connector.

[Explanation of symbols]

 1A, 1B, 1C Connector 2, 7 Connector housing 2a, 7a Top plate 2b, 7b Flat plate 2c, 2d Through hole 2e, 7c Housing 2f, 2g, 7g, 7h Side plate 3, 4, 5, 6, 31, 32 pin 3a , 3b, 4a, 4b, 5a, 5b End 2j, 2k Groove 7d, 7e, 34a, 34b Slit 7f Bottom plate 11, 21 Printed circuit board 11a Notch 12 Female connector 23 Coil 24 Detector circuit 25, 26 Shield thin plate 27 Base 27a Through-hole 27b Holder 27h, 27i, 27j Notch 28, 33 Cover

Claims (7)

[Claims] 1. A connector housing, comprising: a plurality of U-shaped pins having one end protruding into the connector housing as a connector connection terminal and the other end mounted on a printed circuit board as a printed circuit board connection terminal. Characteristic connector for board mounting. 2. The board mounting connector according to claim 1, wherein said pins are mounted on a surface of a printed circuit board. 3. A connector mounted on a surface of a printed circuit board, the connector having a connector housing for holding two pole pins, one end of each of the pins being surface mounted on the printed circuit board for signal connection and connector fixing. And a connector for mounting on a board, the other end of which is a connection terminal. 4. An electronic switch, comprising: a printed circuit board on which a detection circuit unit for detecting an object is mounted; and a case for housing the printed circuit board, wherein the electronic switch is mounted on the printed circuit board on which the detection circuit unit is mounted. A connector housing having a pin holding portion, and a pin partially fixed to the connector housing so that one end protrudes into the connector housing portion, and the other end of the pin is connected to the printed circuit board. An electronic switch, comprising: 5. The electronic switch, comprising: a case having a through hole; a coil mounted around the through hole of the case; an oscillation circuit including the coil; and an electronic circuit mounted on a printed circuit board. The electronic switch according to claim 4, further comprising: a detection circuit unit that detects a change in an oscillation state, wherein the electronic switch is a steel ball detection electronic switch that detects a steel ball passing through a through hole. 6. The case has a base for holding a printed circuit board, a notch having a cutout corresponding to a surface of the connector housing, and a cover forming the same surface as the surface. 5. A step formed in the inner end of the case to be in contact with the cover.
Or the electronic switch described. 7. The electronic switch according to claim 4, wherein the connector housing has an engaging portion that engages with one end of the case, and retains the pulling strength of the female connector that engages with the pin.