Source: https://patents.google.com/patent/JP2004319381A/en
Timestamp: 2020-02-21 07:25:41
Document Index: 114878756

Matched Legal Cases: ['arts 2', 'art 7', 'art 5', 'art 7', 'art 2', 'art 1', 'art 7', 'art 5', 'arts 7']

JP2004319381A - Grounding terminal - Google Patents
Grounding terminal Download PDF
JP2004319381A
JP2004319381A JP2003114554A JP2003114554A JP2004319381A JP 2004319381 A JP2004319381 A JP 2004319381A JP 2003114554 A JP2003114554 A JP 2003114554A JP 2003114554 A JP2003114554 A JP 2003114554A JP 2004319381 A JP2004319381 A JP 2004319381A
JP2003114554A
JP2004319381A5 (en
2003-04-18 Application filed by Kyoshin Kogyo Co Ltd, 協伸工業株式会社 filed Critical Kyoshin Kogyo Co Ltd
2003-04-18 Priority to JP2003114554A priority Critical patent/JP2004319381A/en
2004-11-11 Publication of JP2004319381A publication Critical patent/JP2004319381A/en
2006-06-29 Publication of JP2004319381A5 publication Critical patent/JP2004319381A5/ja
<P>PROBLEM TO BE SOLVED: To provide a grounding terminal which can be mounted on the peripheral part of a standard hole for mounting parts on a printed board. <P>SOLUTION: The grounding terminal 7 is mounted on the peripheral part of the standard hole 2b for mounting parts located in the vicinity of the side edge part of the printed board 2 of which both edge side parts 2a are guided by a guide rail 3 and transported to a mounting device. A connection part 7a to be connected to a soldering part 5 formed at an area distant from the guide rail at the peripheral part of the standard hole is formed at one side of the grounding terminal, and a semicircular notch 7b having a diameter same as that of the standard hole of which peripheral part 7g surrounds more than half of a peripheral part 2c of the standard hole is formed at the other side, and both end surfaces 7f of the notch are made to face the guide rail with a gap g. <P>COPYRIGHT: (C)2005,JPO&NCIPI
The present invention relates to a ground terminal that is surface-mounted on a printed circuit board.
In an electronic device, a ground terminal is mounted on a printed circuit board, and is electrically connected to a housing and grounded. FIG. 11 shows a conventional ground terminal. The ground terminal 1 is provided with a plurality of connection portions 1a to the printed board on both sides on one side, and a hole 1c on the other side as a screw fastening portion 1b to the housing. The ground terminal 1 is mounted on the printed circuit board so that each connection part 1a is fitted to a soldered part formed on the printed circuit board, and the hole 1c is aligned with the mounting hole of the printed circuit board to the housing. It is soldered to the soldering part and fixed. A mounting screw with a washer is inserted into the hole 1c of the ground terminal 1 and the mounting hole of the printed circuit board and screwed into a housing (metal), and the screwed portion 1b of the ground terminal 1 and the printed circuit board are connected to the housing. Fasten together. The ground terminal 1 is electrically connected to the housing via the mounting screw at the peripheral edge of the upper surface of the hole 1c of the screw tightening portion 1b. Thus, the printed circuit board is grounded to the housing (for example, see Patent Document 1).
As shown in FIG. 12, the left and right side edges 2a of the printed circuit board 2 are guided by slits 3a (only one side is shown) provided on the inner surface of the guide rail 3, and are conveyed to the reference position of the mounting machine. A positioning pin 4 is inserted into a predetermined position near the edge 2a, for example, a reference hole 2b provided at each of the four corners, is positioned and held at the reference position, and electronic components are mounted and surface-mounted. Therefore, in the printed circuit board 2, the area of the side edge portion 2a guided by the guide rail 3 becomes a dead space, and mounting of components by the mounting machine becomes impossible. For this reason, in the printed circuit board 2, the side edge 2a is made as narrow as possible in order to increase the mounting area, and the reference hole 2b for mounting components is provided near the side edge 2a.
Patent No. 2863981 [0005]
In FIG. 12, when the reference hole 2b of the printed circuit board 2 is used also as a mounting hole to the housing to further increase the mounting area of the printed circuit board 2, the conventional ground terminal 1 shown in FIG. Since it has a large circular shape and the reference hole 2b is provided in the vicinity of the side edge 2a, it takes up a region (dead space) of the side edge 2a that cannot be mounted on the printed circuit board 2 by a mounting machine. It is impossible to mount.
The present invention has been made in view of the above points, and an object of the present invention is to provide a ground terminal that can be mounted around a reference hole when components are mounted on a printed circuit board.
In order to achieve the above object, in the present invention, both side edges are mounted around a reference hole at the time of component mounting provided near the side edge of a printed circuit board guided by a guide rail and conveyed to a mounting machine. A connection portion connected to a soldering portion formed in a region of the printed circuit board around the reference hole and separated from the guide rail on one side, and the reference hole on the other side. A notch is formed, which has substantially the same diameter as that of the reference hole, and has a peripheral portion surrounding at least half of the peripheral portion of the reference hole, and both side end surfaces of the notch face the guide rail with a gap. .
The ground terminal is mounted on a soldering portion having a connection portion on one side formed in a region separated from the guide rail around the reference hole of the printed circuit board, and a cutout on the other side matches the reference hole, and A peripheral portion surrounds at least half of the peripheral portion of the reference hole, and both side end surfaces of the notch are mounted facing the guide rail with a gap. Accordingly, it is possible to mount the ground terminal around the reference hole provided at the side edge of the printed circuit board at the time of component mounting without interfering with the guide rail. The ground terminal is connected and soldered to the soldering part and fixed, and the peripheral edge of the notch surrounds at least half of the peripheral edge of the reference hole, so that it can be mounted smoothly when mounting it to the housing with the mounting screw. At the same time, it becomes possible to make good electrical contact with the mounting screw. The ground terminal is fastened and fixed to the printed circuit board and the housing together via the mounting screw via the mounting screw, and is electrically connected to ground the printed circuit board to the housing.
FIG. 1 is a perspective view showing a case where a ground terminal according to the present invention is mounted around a reference hole of a printed circuit board. FIG. 2 is a plan view of the ground terminal shown in FIG. 1, and FIG. It is a side view of a terminal. As shown in FIG. 1, the printed circuit board 2 is a dead space where components cannot be mounted by a mounting machine in a region where the side edge 2 a is guided by the guide rail 3. The reference hole 2b is used for positioning the printed board 2 at a reference position when components are mounted on the printed board 2, and is provided near the side edge 2a. The printed circuit board 2 is locked by inserting a positioning pin (not shown) into the reference hole 2b at the reference position. In the peripheral portion of the reference hole 2b of the printed circuit board 2, a region separated from the region (dead space) of the side edge portion 2a guided by the guide rail with the reference hole 2b interposed therebetween, more specifically, the side opposite to the side edge portion 2a. A soldering portion 5 for connecting the connection portion 7a of the ground terminal 7 is formed in the region of FIG.
As shown in FIGS. 1 and 2, the ground terminal 7 has a substantially rectangular shape in plan view, a plurality of connecting portions 7 a are formed on one side, and a substantially semicircular notch 7 b is formed at the center of the other side. I have. As shown in FIG. 3, the connection portion 7a is bent in a substantially triangular shape protruding upward as shown in FIG. 3, and the tip portion 7c is soldered to the soldering portion 5 of the printed circuit board 1. The connecting portion 7a can be expanded and contracted (displaced) in the direction of the arrow by bending the vicinity of the distal end portion into a substantially triangular shape that is convex upward. Thus, when the printed circuit board 2 is fixed to the housing, when the ground terminal 7 is slightly displaced, a suspension function for absorbing the displacement is performed, and the stress on the soldered portion can be reduced. Further, by providing a large number of the connection portions 7a with the gaps 7d, the solder attachment area becomes large when soldering to the soldering portion 5, the mounting strength is improved, and the soldering portion 5 is well positioned when soldering. .
The semicircular notch 7b has an inner diameter substantially the same as that of the reference hole 2b of the printed circuit board 2, and both side portions 7e extend slightly toward the side edge 2a from a position half of the reference hole 2b. 7 f can be opposed to the inner end face 3 b of the guide rail 3 shown by a two-dot chain line with a small gap g. Thus, the ground terminal 7 can be mounted by the mounting machine around the reference hole 2b of the printed circuit board 2 without interfering with the guide rail 3.
It is preferable that both sides 7e of the notch 7b be as long as possible in order to prevent deformation when screwing and to increase the contact area, and the end face 7f has a slight gap of about 1 mm from the end face 3b of the guide rail 3. And are formed so as to face each other. A region 7h indicated by a two-dot chain line between the connection portion 7a and the notch 7b on the upper surface of the ground terminal 7 is a suction point of a suction pad when the ground terminal 7 is mounted on the printed circuit board 2 by a mounting machine. ing.
The ground terminal 7 is sucked and conveyed by the suction pad of the mounting machine in the area 7h (FIG. 2) at the center of the upper surface, and each connection part 7a is placed on the corresponding soldering part 5 of the printed circuit board 2, and the notch is cut out. 7b is aligned with the reference hole 2b and mounted on the printed circuit board 2. The peripheral edge 7g of the notch 7b surrounds at least half of the peripheral edge 2c of the reference hole 2b, more specifically, the peripheral edge of the reference hole 2b except for a part of the area on the guide rail 3 side. As shown in FIG. 2, the ground terminal 7 has a small gap g between the end face 7 f of both sides 7 e of the notch 7 b and the end face 3 b of the guide rail 3, so that interference with the guide rail 3 is prevented. Thus, surface mounting on the printed circuit board 2 becomes possible. The ground terminal 7 is fixed by soldering the respective connection portions 7 a to the soldering portion 5. Thus, the ground terminal 7 is mounted on the printed circuit board 2 around the reference hole 2b.
As shown in FIG. 4, a screw hole 8b is provided at a position corresponding to the reference hole 2b in the printed circuit board mounting portion 8a of the housing 8. The printed circuit board 2 is mounted on the mounting portion 8a, and is fixed together with the ground terminal 7 to the mounting portion 8a together with the ground terminal 7 by a mounting screw 9 which is inserted into the cutout 7b of the ground terminal 7 and the reference hole 2b and screwed into the screw hole 8b. . The mounting screw 9 is a washer mounting screw, and a spring washer 10 and a flat washer 11 are assembled. The ground terminal 7 has an upper peripheral edge of the notch 7b in contact with the lower surface of the flat washer 11, and is electrically connected to the housing 8 via the spring washer 10 and the mounting screw 9. Thereby, the printed circuit board 2 is grounded to the housing 8.
5 to 10 show second to seventh embodiments of the ground terminal according to the present invention. In each embodiment, the portions corresponding to the ground terminal 7 of the first embodiment shown in FIG. 2 are denoted by the corresponding reference numerals, and detailed description is omitted.
In the second embodiment shown in FIG. 5, the ground terminal 7 'is formed by forming both sides 7e' of the notch 7b 'obliquely with respect to the side 7e of the notch 7b of the ground terminal 7 shown in FIG. This ground terminal 7 'is effective when the soldering portion 5 cannot be arranged on the printed circuit board 2 in parallel with the side edge portion 2a as shown in FIG. is there.
In the third embodiment shown in FIG. 6, the ground terminal 15 has a substantially rectangular shape in a plan view, has a plurality of connection portions 15a formed on both sides on one side, and has a reference hole 2b of the printed circuit board 2 formed in the center on the other side. And a notch 15b whose peripheral edge surrounds at least half of the peripheral edge of the reference hole 2b. The vicinity of the distal end of the connection portion 15a is bent upward in a substantially triangular shape, and the distal end portion 15c is a connection portion with the soldering portion 5 formed on the printed circuit board 2.
In the fourth embodiment shown in FIG. 7, the grounding terminal 16 is formed such that both side portions are wide with a step formed from substantially the center, a plurality of connecting portions 16 a are formed in the center portion on one side, and the connecting portions 16 a are respectively formed on the step portions on both side portions. 16a 'is formed in the same direction as the connecting portion 16a, and has a diameter substantially the same as that of the reference hole 2b of the printed circuit board 2 at the center on the other side, and the peripheral edge surrounds at least half of the peripheral edge of the reference hole 2b. The notch 16b is formed. The vicinity of the distal end of the connecting portion 16a is bent upward in a substantially triangular shape, and the distal portions 16c and 16c 'are connected to the soldering portion 5 formed on the printed circuit board 2.
In the fifth embodiment shown in FIG. 8, the ground terminal 17 has a substantially circular arc on one side and a plurality of connection portions 17a formed in parallel in the same direction, and a substantially same diameter as the reference hole 2b of the printed circuit board 2 at the center on the other side. And a notch 17b whose peripheral edge surrounds at least half of the peripheral edge of the reference hole 2b. The vicinity of the distal end of the connecting portion 17a is bent upward in a substantially triangular shape, and the distal end 17c is a connection portion with the soldering portion 5 formed on the printed circuit board 2.
In the sixth embodiment shown in FIG. 9, the ground terminal 18 has a substantially rectangular shape in a plan view, and has a plurality of recesses 18a formed on one side and both sides to be soldered to a soldering portion formed on the printed circuit board 2. And a notch 18b having substantially the same diameter as the reference hole 2b of the printed circuit board 2 and having a peripheral portion surrounding at least half of the peripheral portion of the reference hole 2b.
In the seventh embodiment shown in FIG. 10, the ground terminal 19 is formed by cutting out a corner on one side of the ground terminal 18 shown in FIG. 9 to form an inclined portion, and providing a plurality of notches 19a on one side, the inclined portion, and both side portions. A connection portion for soldering to a soldering portion formed on the printed circuit board 2, having a diameter substantially equal to that of the reference hole 2 b of the printed circuit board 2 at a central portion on the other side, and having a peripheral portion corresponding to a peripheral portion of the reference hole 2 b. A notch 19b surrounding at least half is formed.
In the second to seventh embodiments, when each ground terminal is mounted on a printed circuit board, both side end surfaces of each notch face the inner end surface 3b (FIG. 2) of the guide rail 3 with a small gap g. Needless to say.
As described above, in the present invention, it is possible to mount a ground terminal by a mounter around a reference hole at the time of mounting components on a printed circuit board, and the reference hole of the printed circuit board is also used as a mounting hole for a housing. It is possible to further improve the mounting density of the printed circuit board.
FIG. 1 is a perspective view when a ground terminal according to the present invention is mounted on a printed circuit board.
FIG. 2 is a plan view of a ground terminal shown in FIG.
FIG. 3 is a side view of the ground terminal shown in FIG. 2;
FIG. 4 is an explanatory view of a case where the ground terminal shown in FIG.
FIG. 5 is a plan view showing a second embodiment of the ground terminal according to the present invention.
FIG. 6 is a plan view showing a third embodiment of the ground terminal according to the present invention.
FIG. 7 is a plan view showing a fourth embodiment of the ground terminal according to the present invention.
FIG. 8 is a plan view showing a fifth embodiment of the ground terminal according to the present invention.
FIG. 9 is a plan view showing a sixth embodiment of the ground terminal according to the present invention.
FIG. 10 is a plan view showing a seventh embodiment of the ground terminal according to the present invention.
FIG. 11 is a plan view of a conventional ground terminal.
FIG. 12 is an explanatory diagram of a reference hole provided at the time of component mounting provided on a printed circuit board.
2 Printed circuit board 2a Side edge 2b Reference hole 3 Guide rail 5 Soldering parts 7, 7 ', 15, 16, 17, 18, 19 Ground terminals 7a, 7a', 15a, 16a, 17a, 18a, 19a Connection 7b , 7b ', 15b, 16b, 17b, 18b, 19b Notch
A ground terminal mounted on the periphery of a reference hole at the time of component mounting provided near the side edge of a printed circuit board whose both side edges are guided by a guide rail and conveyed to a mounting machine,
On one side, a connection portion connected to a soldering portion formed in a region separated from the guide rail around the reference hole of the printed circuit board is formed, and on the other side, the connection portion has substantially the same diameter as the reference hole. A ground terminal, wherein a notch having a peripheral portion surrounding at least half of a peripheral portion of the reference hole is provided, and both end surfaces of the notch face the guide rail with a gap therebetween.
JP2003114554A 2003-04-18 2003-04-18 Grounding terminal Pending JP2004319381A (en)
JP2003114554A JP2004319381A (en) 2003-04-18 2003-04-18 Grounding terminal
US10/797,041 US7094076B2 (en) 2003-04-18 2004-03-11 Ground terminal and method for mounting a ground terminal to a printed board
CN 200410032463 CN100411252C (en) 2003-04-18 2004-04-08 Ground terminal, printed board mounted with a ground terminal, and mounting method thereof
EP04008971.6A EP1471779B1 (en) 2003-04-18 2004-04-15 Ground terminal, printed board mounted with a ground terminal, and method for mounting a ground terminal to a printed board
JP2004319381A true JP2004319381A (en) 2004-11-11
JP2004319381A5 JP2004319381A5 (en) 2006-06-29
ID=32959569
JP2003114554A Pending JP2004319381A (en) 2003-04-18 2003-04-18 Grounding terminal
US (1) US7094076B2 (en)
EP (1) EP1471779B1 (en)
JP (1) JP2004319381A (en)
CN (1) CN100411252C (en)
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2003-04-18 JP JP2003114554A patent/JP2004319381A/en active Pending
2004-03-11 US US10/797,041 patent/US7094076B2/en active Active
2004-04-08 CN CN 200410032463 patent/CN100411252C/en active IP Right Grant
2004-04-15 EP EP04008971.6A patent/EP1471779B1/en active Active
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US7094076B2 (en) 2006-08-22
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US20040209158A1 (en) 2004-10-21
CN1551413A (en) 2004-12-01
CN100411252C (en) 2008-08-13
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