JPH03196475A - Connecting device of printed circuit board - Google Patents

Abstract

PURPOSE:To enhance the mechanical and electric connection and fixation by providing a connecting tool having an elastically deformable contact piece passed through an inserting hole and vertically protruded. CONSTITUTION:In the connection of printed circuit boards 15, 16, connecting pins 122 protruding on the housing 11 lower surface of a connecting tool 10 are inserted into the terminal 160 of the other board 16 from the board surface side, and soldered and fixed to the lands 161 of the pattern on the back surface side. The connecting patterns 150 of the board 15 push down the contact pieces 121 protruded from inserting holes 110, which contact pieces are then elastically deformed to the extent corresponding to the quantity protruded into the holes 110, pushed into the holes, whereby the certain contact and connection is attained. Then, mounting screws 17 are screwed into the screw holes 111 on both ends of the connecting tool 10 through mounting holes 151, whereby the boards 15, 16 are fixed to each other, and the circuit of the board 15 is electrically connected to the circuit of the board 16 through each connecting terminal 12 of the connecting tool 10, the patterns 150, and the lands 161 of the patterns. Hence, a satisfactory connection can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connection device for connecting at least two printed circuit boards via a connection tool inside a cabinet of a TV set, AV equipment, etc.

Conventional technology Inside the cabinet of TV set AV equipment, etc.
There are cases where it is desired to connect printed circuit boards, for example, two printed circuit boards, in various combinations such as parallel or orthogonal relationships. Conventionally, as an electrical and mechanical connection means in such a case, a male connector is mounted on one printed circuit board and a female connector is mounted on the other printed circuit board, and the two connectors are male and female. A device that connects two boards by mating, ■A card edge-shaped connector is formed on one printed circuit board, and after inserting this card edge-shaped connector into the insertion hole formed in the other printed circuit board,
There have been two types of card edge connectors in which the terminals of the card edge connector and the connection pattern of the other board are connected by soldering at the edge of the insertion hole. The former (2) is applied when two printed circuit boards are connected in a parallel arrangement. The latter (2) is applied when two printed circuit boards are connected at orthogonal angles.

Problems to be Solved by the Invention The former connection structure for a board using male and female connectors requires that the respective connection pins be inserted into the insertion holes of the board when attaching the male and female connectors to the printed circuit board. After insertion, solder the connection on the back side. In addition, when connecting a printed circuit board, insert the terminal of the male connector into the terminal hole of the female connector, contact the metal contact inside the hole to make an electrical connection, and connect the male and female terminals to the terminal hole. By fitting, the two boards are mechanically connected via male and female connectors. Therefore, the former connection method requires a soldering process for the male and female connectors onto the printed circuit board, and a process for connecting the male and female connectors to the printed circuit board. It is complicated and requires time and effort to connect the boards, and it is not possible to simultaneously fix the mechanical connection and fix the board between the boards and electrically connect them in the same process. Furthermore, 2
The mechanical connection strength of two boards depends only on the force of the mating contact between the terminals of the male connector and the terminal holes of the female connector. In order to obtain strength, the boards must be screwed together via connectors, which is a hassle.

On the other hand, in the latter connection structure using a card edge-shaped connector, after the connector is inserted into the insertion hole, the connection pattern on the edge of the insertion hole and the terminal of the connector must be soldered, and the connection process Moreover, since the mechanical connection between the two printed circuit boards is by fitting and fixing them into the insertion hole with the connector, there is a problem that the connection strength is not very strong. Furthermore, even with this connection structure, it is not possible to perform mechanical connection and electrical connection between two boards at the same time, and such connection cannot be performed.

The present invention was proposed in view of the above points, and an object of the present invention is to provide a connection device that can simultaneously connect and fix two printed circuit boards mechanically and connect electrical circuits in the same process. That is.

Means for Solving the Problem A first means for solving the problem of the present invention is a connecting device for connecting at least two printed circuit boards via a connecting tool, in which the connecting tool is inserted into a predetermined number of terminals in the longitudinal direction. A housing having a hole, an elastically deformable contact piece having a portion protruding from one side of the housing and fitted into the insertion hole, and a connection projecting from one end of the contact piece to the other side of the housing through the insertion hole. A predetermined number of connection terminals consisting of pins and a predetermined number of connection terminals. Then, a predetermined number of connection patterns are arranged in parallel at a predetermined pitch on the surface of one of the two printed circuit boards,
When a contact piece protruding from one side of the connector housing is pressed into contact with this connection pattern, a predetermined number of terminal holes are arranged in parallel at a predetermined pitch on the other printed circuit board, and the terminal holes are inserted into the connector housing. A configuration was adopted in which a connecting pin protruding from the other surface was inserted and soldered, and the one printed circuit board and the housing of the connector were fixed using a fixing member such as a screw. In the first problem-solving means, the contact piece is bent into a ring shape, a loop shape, a strip shape, or the like. In the protruding portion from one surface of the housing, a plurality of irregularities, for example, "jagged" burrs, are formed in a portion corresponding to the connection pattern on one substrate surface.

Furthermore, the second problem-solving means of the present invention provides at least two
In a connecting device for connecting two printed circuit boards via a connecting tool, the connecting tool is connected to a housing having a predetermined number of terminal insertion holes in the longitudinal direction, and a loop-shaped, ring-shaped,
Two opposing contact portions formed in a zero shape or a rectangular shape are made to protrude from both surfaces of the housing, and are configured with an elastically deformable connection terminal fitted into the insertion hole. A predetermined number of connection patterns are arranged in parallel at a predetermined pitch on the opposing surfaces of the two printed circuit boards, and when the boards are connected, each of the connection patterns of the two boards is connected to the contact portion of the connection terminal that protrudes from both sides of the housing. A configuration was adopted in which the two printed circuit boards were pressed into contact with each other, and the two printed circuit boards were fixed with screws through the housing of the connector. A plurality of irregularities, such as ``jags'' and ``burrs'', are formed on the contact portions of the connection terminals that protrude from both sides of the housing, and are engaged with corresponding connection patterns on the two printed circuit boards.

In the first means for solving the problem, when two printed circuit boards are connected in a parallel arrangement, the circuits of the two printed circuit boards are electrically connected via the connector interposed between them, and one of the It is configured to be fixed with screws to the printed circuit board and the housing of the connector. Furthermore, in the second problem solving means, when two printed circuit boards are connected in a parallel arrangement, the circuits of the two printed circuit boards are connected via a connector interposed between them, and the two printed circuit boards are The printed circuit board is fixed by a fixing member such as a screw through the housing of the connector.

In the first technical means of operation, when connecting two printed circuit boards, after inserting the connecting pin protruding from the other side of the housing of the connector into the terminal hole of the other printed circuit board, the soldering is fixed on the back side. When the connector is soldered with a connecting pin, it is attached to the other board via the connection. Next, when the connection pattern of one printed circuit board is brought into pressure contact with the contact portion protruding from the housing surface of the connection terminal and pressed, the contact portion is elastically deformed into the insertion hole of the housing due to the force of the pressing. The contact portion and the connection pattern are connected by the reaction force of the deformation. After that, when the two printed circuit boards are fixed with a fixing member such as a screw through the housing of the connector, the two printed circuit boards are mechanically connected and fixed, and at the same time, the circuit on the inner board is electrically connected. be done.

In that case, if a plurality of irregularities, such as jagged or crisp patterns, are formed on the contact part, they will act in the direction of biting into the connection pattern, so that the connection 9- between the contact part and the connection pattern can be made even better. .

Furthermore, in the second technical means, when connecting two printed circuit boards to each other, the two printed circuit boards are arranged facing each other via a connecting tool, and each connection pattern is pressed into contact with the contact part of the connecting tool, When the housing is pressed from both sides, the contact portion is elastically deformed into the insertion hole of the housing. The reaction force reliably connects the contact portions on both surfaces of the housing and the connection pattern. Next, when the two printed circuit boards are fixed with a fixing member such as a screw through the housing of the connector, the two printed circuit boards are mechanically connected and fixed via the connector, and at the same time,
The circuits on the two boards are electrically connected. In that case, if a plurality of irregularities such as jagged or crisp shapes are formed on both surfaces of the housing of the connection terminal, better contact and connection with the connection pattern can be achieved in the same manner as described above.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

10- FIG. 1 shows a connection structure according to a first embodiment of the present invention,
FIG. 2 shows details of the connecting tool used for the connection, and FIG. 3 shows the state of connection of the printed circuit board in the first embodiment.

The connecting tool tool 0 includes a housing 11 and a housing 11.
Terminal insertion holes 110 formed at a predetermined pitch in the longitudinal direction of
. . . The connection terminals 12 are respectively fitted into the terminals 12 . The housing 11 is formed into a rectangular block rod by resin molding, and screw holes Ill and 111 for screw fixing are formed at both ends of the housing 11 passing through the front and back sides.

The terminal insertion hole 110 of the housing 11 is large enough to allow elastic deformation of a contact piece 121 of the connection terminal 12, which will be described later, and is large enough to prevent the contact piece 121 from accidentally falling out when the contact piece 121 is fitted into the hole. It is formed in an inner space the size of . A small hole 112 is formed at the bottom of the insertion hole 110 for allowing the connecting pin 122 of the connecting terminal 12 to protrude to the other surface of the housing.

The connection terminal 12 is made of a metal material and includes a contact piece 121 bent into a substantially loop or ring shape and a connection pin 122 extending from one end of the contact piece 121 in one direction. The contact piece 121 has a spring property, and the insertion hole 11
It can be elastically deformed within 0. When assembling the connection terminal 12 into the insertion hole 110 of the housing 11, the connection pin 122 is inserted into the small hole 112 at the bottom of the insertion hole 110,
Next, the contact piece 121 is fitted into the insertion hole 110 in an elastically contracted state, and the contact piece 121 is fitted into the insertion hole 110 by the elastic expansion. At this time, a portion of the contact piece 121 protrudes from the −L surface (− surface) of the housing 11 at a height h. Further, the connecting pin 122 projects a predetermined length from the lower surface (other surface) of the housing 11 through the small hole 112. As a result, the connection terminals 12 are fitted into each insertion hole 110 of the housing 11. The protrusion height h of the contact piece 121 from the housing 11 to the upper surface is set to, for example, about in/m, and the contact piece 121 exerts sufficient elastic force due to pressing deformation due to the pressing of the connection pattern of the board, which will be described later. In order to ensure reliable and good contact with the material, the height h should be large to some extent. In this case, a sufficiently large spring pressure can be obtained from the reaction force of the deformation caused by pressing, and the contact and connection between a part of the contact piece 121 and the connection pattern can be made more reliable and strong. A locking pawl 113 is protruded from one side of each insertion hole 110 of the housing 11, and when engaged with a contact piece 121 or a part of the connecting pin 122, the connecting terminal 12 can be pulled out as shown by the arrow in FIG. Extraction in the direction is restricted. A plurality of jagged projections and recesses 121A are provided on a portion of the contact piece 121 that protrudes from the housing 11.

On the other hand, of the two printed circuit boards 15.1B, one of the printed circuit boards 15 is soldered to the connection terminal 12 on one side.
A predetermined number of connection patterns 150 corresponding to the contact pieces 121 are arranged in parallel at a predetermined pitch in one side direction, that is, in the longitudinal direction of the housing 11 of the connector 10, with the conductive foil exposed. Each connection pattern 150... is connected to the circuit of the substrate 15 via a conductive foil. A mounting hole 151 for screwing is provided on the outer side in the arrangement direction of the connection pattern 150 of the print board 15 at the image feeding end thereof.
．． 151 is formed through the front and back sides. Mounting hole 151.
Reference numeral 151 corresponds to the screw holes 11LIII formed at both ends of the housing 11 of the connector 10. Further, a predetermined number of terminal holes 160 corresponding to the contact pieces 121 of the connection terminals 12 are provided on one side of the other printed circuit board 16 at a predetermined pitch in the − side direction, and soldering is prevented from the component mounting surface. It is formed through the front and back of the surface. For soldering each terminal hole 160, a patterned land 161 is formed by exposing conductive foil around the surface side. The terminal holes 160 correspond to the connection patterns 150 of one printed circuit board 15, respectively. Lands 161 around the terminal holes 160 are connected to a circuit formed on the printed circuit board 16 via a conductive pattern.

When connecting two printed circuit boards 15.1B,
A connecting pin 122 protruding from the lower surface of the housing of the connector 10
... are inserted into the corresponding terminal holes 160 of the other printed circuit board 1614- from the surface of the board, and soldered to the lands 161 of the pattern around the terminal holes 180 on the back side. By this, connection tool 1
0 is mounted on the other printed circuit board 16. Next, as shown in FIG. 3, the connection pattern 150 of the other printed circuit board 15 is pressed onto the corresponding contact piece 121 protruding from the housing 11 of the connector 10, and the contact piece 121-... are pushed down by the connection patterns 150.... When the contact pieces 121 are pressed, they are pushed into the insertion hole 110 of the housing 11 by being elastically deformed by an amount corresponding to the protrusion height h. The contact piece 121 is
... are reliably contacted and connected to the connection patterns 150.... In that case, if a plurality of jagged projections and recesses 121A are formed on a part of the contact piece 121, the projections and recesses 1
21A... bite into the surface of the pattern 150..., so that the contact between the contact piece 121 and the pattern 150 can be made even better and more reliable. In addition, unevenness 121A
...e may be a protruding piece like a paris. When the connection patterns 150-... of the circuit board 15 are elastically pressed into contact with each contact piece 121 of the connection terminals 12, e, the mounting screws 17 pass through the mounting holes 151, 151 of the printed circuit board 15 and connect the connection tool. Screw holes LI formed on both ends of the housing of 10
Screwed into L111, two printed circuit boards 15.1B
are screwed and fixed via the connector 10. At the same time, the circuit on one printed circuit board 15 and the circuit on the other printed circuit board 16
are electrically connected to the circuits through the respective connection terminals 12 of the connector 10, the connection patterns 150, and the lands 161 of the patterns.

As described above, the two printed circuit boards 15 and 18 are mechanically connected and fixed via the connector 10, and at the same time, electrically connected.

Although Fig. 3 shows an example in which two printed circuit boards 15.18 are connected in a parallel arrangement relationship, it is also possible to connect two printed circuit boards 15.1B in an orthogonal angular relationship. The present invention is applicable. FIG. 4 shows an example. In FIG. 4, the same parts as those in the first embodiment are designated by the same reference numerals, and their explanation will be omitted. The difference is that the boards 15 and 16 are orthogonally arranged and the connector 10 is
For this purpose, the connection pins 122 protruding from the bottom surface of the housing 11 are bent 90 degrees downward and inserted and soldered into the terminal holes 160 of the board 16. Make sure that the mounting screws 17 are inserted into the housing 1 through the mounting holes 151 and 151 of the board 15 from the side.
1, and the substrate 15 and the housing 11 are screwed and fixed. Other points are similar to the first embodiment, and the effect is the same in that electrical connection can be made simultaneously with mechanical connection fixation.

Next, FIGS. 5 to 7 show a second embodiment of the printed circuit board connection structure according to the present invention, and the same parts as in the first embodiment are denoted by the same reference numerals and explanations are omitted. do.

A predetermined number of terminal insertion holes 120 are formed at a predetermined pitch in the longitudinal direction of the housing 11 of the connector 10. The terminal insertion holes 120 are formed through the upper and lower surfaces of the housing 11 at the same intervals in the width direction of the housing 11 . A connecting terminal 22 is fitted into each terminal insertion hole 120. As shown in FIG. 6, the connection terminal 22 is formed of a metal material into a substantially diamond-shaped ring shape and has spring properties. Connection terminal 22・
When attaching ... to the housing 11, when inserting it into the insertion hole 120 with the long side of the diamond shape up and down, both ends of the short side are pressed by the inner wall of the insertion hole 120 and elastically contract inward, and the elastic force causes The connection terminal 22 is held and fitted into the insertion hole 120. Contact portions 220 at both ends of the long side.
220 protrudes from both upper and lower surfaces of the housing 11 at a height h. When connecting the printed circuit boards 15 and 16, the connection terminals 22
is elastically deformed within the range of protrusion height h of the contact portions 220 and 220 at both ends of the long sides, and the contact portions 220 and 220 are pushed into the insertion hole 120. Through-holes 12L and 121 for screw fixing are formed at both ends of the housing 11.18-For soldering of the printed circuit board 15, a connection pattern 150eφ similar to the above is formed in a predetermined direction along one side with conductive foil exposed. A predetermined number of pitches are arranged in parallel.

Each connection pattern 150... is connected to a circuit on the printed circuit board 15 via a conductive pattern. Attachment holes 15L151 for screwing are formed at both ends of one outer side of the connection pattern 150 of the printed circuit board 15 so as to pass through from the front and back.

The mounting holes 15L 151 correspond to the through holes 12L L21 formed at both ends of the housing 11 of the connector 10.

Connection patterns 170 corresponding to the respective connection terminals 22 of the connector 10 are formed on one side of the other printed circuit board 16 at predetermined pitch intervals in the negative side direction, with conductive foil exposed. The connection patterns 170 correspond to the connection patterns 150 of one printed circuit board 15 via the connection terminals 22 of the connector 10. Mounting screw holes 17L 171 for screw tightening are formed at both ends of one outer side of the connection pattern 170, passing through the front and back of the board. The mounting screw holes 171, 171 correspond to the through holes 12L 121 on both ends of the housing of the connector 10 and the mounting holes 15L 151 on one of the printed circuit boards 15.

Contact portions 220 and 220 at both ends of the long side of the connection terminal 22
A plurality of fine jagged unevenness 221... are formed on the connecting pattern 170, 150, so that the unevenness 221... has the effect of biting into the pattern surface when connecting with the connection pattern 170, 150. Incidentally, the unevenness 221 may be formed with a paris-like shape instead of a jagged one. In that case, when a part of the contact portions 220, 220 is punched out to form a punched hole, a plurality of paris-like irregularities 221 are formed on the periphery of the hole. In addition, connection terminal 2
In addition to the above-mentioned shapes, the shape of 2 may be various, such as a zero shape or a loop shape.

In the above configuration, when connecting two printed circuit boards 15 and 16, as shown in FIG.
One side of the printed circuit boards 15.16 are vertically opposed to each other through the housing 11 of the two circuit boards 15.
The 16 connection patterns 150-..., 170... are pressed against the contact portions 220, 220 protruding from the upper and lower surfaces of the housing of the connection terminals 22... to bring them into pressure contact. Due to the pressing force, the connection terminals 22 are elastically deformed, and the contact portions 220 and 220 are pushed into the insertion hole 120. Due to the reaction force of the push-in, each contact portion 220, 220 of the connection terminal 22... is reliably contacted and connected to the corresponding connection pattern 150, 170, . that time,
Due to the reaction force of the pushing, the unevenness 221 formed on the contact portions 220, 220 is caused by the connection pattern 150...
, 170II..., so the contact portion 220.
The contact connection between patterns 150 and 170 of 220 becomes more reliable and better. Connection pattern 150...-
1170 are pressed into contact with the contact portions 220, 220 of the corresponding connection terminals 22... from the upper and lower surfaces, then the mounting screws 17 are inserted into the mounting holes 15L of the printed circuit board 15.
Through holes 121.1 at both ends of the housing of the 15L connector 10
21 through 21- and screwed into the mounting screw holes 171 and 171 of the printed circuit board 16. As a result, the two printed circuit boards 15
．． 16 are screwed and fixed via the connector 10, and as shown in FIG. 7, the two substrates 15, 16 are mechanically connected and fixed in a parallel arrangement relationship, and at the same time electrically connected.

Note that the connection structure according to the present invention is limited to two printed circuit boards 15 and 18 shown in FIGS. 3 and 7 arranged in parallel with each other, and three or more printed circuit boards in three or more layers. It is also applicable when it is desired to stack multiple layers and arrange them in parallel. FIG. 8 shows an example. In FIG. 8, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and their explanation will be omitted.

In FIG. 8, the first and second stages, that is, the first and second
The connection structure shown in the first embodiment (see FIG. 3) is adopted between the layers and the printed circuit boards 15 and 18. Furthermore, the connection structure shown in the second embodiment (the seventh
(see figure) is adopted22-. In the example shown in FIG. 8 as well, the printed circuit boards of each layer can be mechanically connected and fixed via the connecting tool 10, and at the same time, the circuits of both boards can be electrically connected. As described above, according to the connection structure according to the present invention, it is possible to easily and securely connect and fix the printed circuit boards of each layer while sequentially stacking the printed circuit boards in multiple layers such as 3 layers, 4 layers, etc., and at the same time. Can connect each other's circuits.

FIG. 9 shows still another example of the connection structure according to the present invention, in which the connection tool 10 is arranged in parallel and opposite to each other between both sides of the printed circuit board 15, 16.

The two printed circuit boards 15.1B are connected to the connectors 10.1 on both sides.
0 through a mounting screw 17, and are mechanically and electrically connected. Even in the structure of this embodiment, electrical connection can be made at the same time as the mechanical connection and fixation as described above.

In addition, in each of the above embodiments, screws are used as means for fixing the printed circuit board, but other plastic fixing members such as bush rivets or various similar members can be used. .

As described in detail, the printed circuit board connection structure of the present invention enables mechanical and electrical connection between at least two printed circuit boards without using conventional male/female connectors or card edge connectors. connections can be reliably and easily made at the same time and in the same process. Furthermore, sufficiently strong connection strength can be obtained. Moreover, the boards can be easily connected to each other by employing various connection forms such as mutually parallel or orthogonal angular relationships. Moreover, 2 layers, 3 layers, 4 layers,
By laminating printed circuit boards in multiple layers, the boards in each layer can be easily connected mechanically and electrically at the same time.

[Brief explanation of drawings]

FIG. 1 is a partially sectional exploded perspective view showing a first embodiment of a printed circuit board connection structure according to the present invention, FIG. 2 is a side sectional view of a connector used in the first embodiment, and FIG. is a side view showing the connection state of the printed circuit board in the first embodiment, FIG. 4 is a side view showing another connection structure in the first embodiment, and FIG. FIG. 6 is a side sectional view of the connector used in the second embodiment, and FIG. 7 is a partially sectional exploded front view showing the embodiment.
FIGS. 8 and 9 are side views showing other examples of the printed circuit board connection structure according to the present invention. 10...Connector 11...Housing 1101120...Terminal insertion hole 111...Screw hole 112-...Small hole 121-...Through hole 12.22...Connection terminal 121...Contact piece 122... Connection pin 220... Contact portion 121A, 221... Unevenness 15.1B, 18@... Printed circuit board 25- 150. 160・ 510 71- 170...Connection pattern...Terminal hole--Mounting hole...Mounting screw hole

Claims (3)

[Claims] (1) A connection device for connecting at least two printed circuit boards via a connector, including a housing having a predetermined number of terminal insertion holes in the longitudinal direction, and a part of the housing having a part protruding from one surface of the housing to form the insertion hole. The connecting tool is constituted by a predetermined number of connecting terminals each consisting of an elastically deformable contact piece fitted into the housing and a connecting pin protruding from one end of the contact piece through the insertion hole to the other surface of the housing, 2
A predetermined number of connection patterns are arranged in parallel at a predetermined pitch on one board surface of a printed circuit board, and the contact piece protruding from one surface of the housing is pressed into contact with the connection pattern, and a predetermined number of connection patterns are placed on the other printed circuit board. A number of terminal holes are arranged in parallel at a predetermined pitch, the connecting pins protruding from the other surface of the housing are inserted and soldered into the terminal holes, and the one printed circuit board and the housing are fixed with screws. A printed circuit board connection device consisting of: (2) A connection device that connects at least two printed circuit boards via a connector, including a housing having a predetermined number of terminal insertion holes in the longitudinal direction, and a housing formed in a loop, ring, O, or rectangular shape. and an elastically deformable connection terminal that is fitted into the insertion hole with two opposing contact portions protruding from both sides of the housing, and a predetermined contact portion is formed on the opposing surfaces of the two printed circuit boards. A number of connection patterns are arranged in parallel at a predetermined pitch, each of the connection patterns is pressed into contact with a contact portion of the connection terminal protruding from both sides of the housing, and the two printed circuit boards are connected through the housing of the connection tool. A printed circuit board connection device that is fixed with a fixing member such as a screw. (3) Two printed circuit boards are arranged in parallel, the circuits of the two printed circuit boards are connected via a connector interposed between them, and one of the printed circuit boards and the housing of the connector are connected by screws. The printed circuit board connection device according to claim 1 or 2, wherein the printed circuit board connection device is fixed by a fixing member such as.