JPS5927645Y2 - Board mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a substrate mounting device for attaching and fixing a second substrate to a first substrate.

Generally, this type of installation requires that the device be mounted first using a holder.
A daughter board as a second board is attached to a mother board as a second board.

However, conventional holders have a structure in which they are screwed onto the motherboard, so it takes time and effort to install them.Furthermore, mounting screws and other parts require parts, so there are many parts and the cost is high. was there.

Additionally, such holders generally have a structure that supports both sides of the daughter board, so it is not always easy to attach the daughter board to the holder, and furthermore, the daughter board must be installed completely separated from the mother board. Therefore, there was a drawback that a dedicated connector was required for electrical connection between these boards.

The present invention was devised in view of the above points, and it facilitates the attachment of the holder and the second substrate to the first substrate, improves work efficiency, makes the attachment even more reliable, and further improves the attachment. This enables cost reduction by reducing the number of parts required for the
The present invention provides a board mounting device that makes it possible to connect a second board to a second board without using a connector or the like.

Next, one embodiment of the present invention will be described based on the drawings.

11 is a mother board serving as a first board.

A first slit 12 and a second slit 13 are formed in the motherboard 11 and are opposed to each other in the groove direction.

Reference numeral 14 denotes an angular holder insertion hole continuous to the outside of the first slit 12.

21 is a holder made of an elastic material such as synthetic resin, and has a pair of legs 22 and 23 provided below.
and a support column 24 integrally provided above the legs 22,23.

The leg portions 22 and 23 have upper end locking claws 25 and lower end locking claws 26 facing each other on the outside thereof, and elastic protrusions 27 and 28 are formed on the inside thereof, respectively.

The support column 24 has a mounting groove 29 from the upper end to the lower end.
For this attachment, an engaging protrusion 30 is formed at the upper end of the groove 29.

31 is a daughter substrate as a second substrate formed in a symmetrical shape.

The lower side of the daughter substrate 31 has a rectangular cutout at its center, and the first and second slits are formed at both ends thereof.
．． The first protrusion 32 and the second protrusion 3 inserted into 13
3 is formed.

34.34 is a recess formed on the outside of the first and second projecting pieces 32.33 and engaged with the outside inner edge of the second slit 13.

Further, a secured portion 35.35 is formed on the side portion of the daughter board 31 at a position corresponding to the engaging protrusion 30 of the holder 21.

With the above configuration, the attachment of the daughter board 31 to the mother board 11 is performed in the following steps.

First, when installing the holder 21, insert the groove 29 into the first slit 1.
Press the legs 22 and 23 into the holder insertion hole 14 toward the 2nd side.

As a result, the leg portions 22 and 23 are attached to the mother board 11 by holding the inner edges of the holder insertion hole 14 on both sides with the locking claws 25 and 26 provided on the outside thereof, as shown in FIG.

However, in this state, the outward biasing force of the legs 22 and 23 is weak, so the motherboard 1 of the holder 21
1 is not secure.

Next, the recess 34 of the second projecting piece 33 of the daughter board 31 is slid along the groove 29 to attach the holder 21 on the side of the mother board 11.
Insert the projecting pieces 32 and 33 into the first and second ring I-12 and 13 of the motherboard 11.

This insertion operation involves tilting the recess 34 on one side edge of the daughter board 31 to engage the outer edge of the second slit 13 of the mother board 11, and inserting the other side edge of the daughter board 31 into the holder 21.
To install the daughter board 31, slide it into the groove 29 so that the lower side of the daughter board 31 comes into contact with the mother board 11, and at the same time, the daughter board 3
The first engaged portion 35 is engaged with the engaging protrusion 30 of the holder 21, as shown in FIG.

Furthermore, when the daughter board 31 is attached during operation, the first projecting piece 32 of the daughter board 31 is attached to the leg part 2 of the holder 21.
The elastic protrusions 27 and 23 are pressed into contact with each other in sequence.

This first projecting piece 32 is connected to the leg portion 22 of the holder 21.
．． The abutment with the elastic protrusions 27 and 28 at 23 presses the legs 22, 23 outwards respectively.

As a result, as shown in FIG. 2, the attachment of the holder 21 to the motherboard 11, which had been done loosely, becomes secure.
The holder 21 is securely fixed perpendicularly to the motherboard 11.

Therefore, the daughter board 31 is reliably fixed to the mother board 11 not only in the vertical direction but also in the front-rear, left-right directions.

Further, the connection between the daughter board 31 and the mother board 11 mounted in this manner is performed, for example, as shown in FIG. 5.

That is, in the motherboard 11, the first and second
Connecting terminals a are printed at positions adjacent to the connecting terminals 12 and 13, and connecting terminals are also printed at positions corresponding to the connecting terminals a on the first and second projecting pieces 32 and 33 of the daughter board 31. Print out the connection terminals a,
l) by soldering these side boards 11.31
The wiring between them is completed.

In this embodiment, since the daughter substrate 31 is formed symmetrically, the daughter substrate 31 can be oriented in either direction.
1 to the motherboard 11 is possible.

However, in this case, care must be taken because the connection terminals a, l) of the daughter board 31 and the mother board 11 may not correspond to each other.

Further, it goes without saying that the soldering between the donor board 31 and the mother board 11 mounted in this manner is performed only when necessary.

As described above, according to the present invention, the holder can be easily attached to the first board using screws or the like without the need for any other members, and the second board can be held down by the holder from both sides. Since it is not necessary to connect the second board to the first board.
The work of mounting the board is simplified and work efficiency can be improved.

Furthermore, since the number of parts can be reduced, costs can also be reduced.

Further, the second board has the first and second protrusions inserted and locked into the first and second slits of the first board, and the sides thereof are supported by the holder. Fixation to the substrate is ensured in the vertical direction, front and rear, and left and right directions.

Furthermore, since the first and second protrusions of the second board are inserted into the first and second rings I of the first board,
If necessary, connection terminals can be provided in this portion, and connections to the side substrates can be made directly by soldering.

[Brief explanation of the drawings] The figure shows one embodiment of the board mounting device of the present invention.
Fig. 1 is an exploded perspective view of the same, Fig. 2 is an explanatory diagram showing the state of attachment of the holder attached to the first board and the second board, and Fig. 3 is an explanatory diagram showing the state of attachment of the holder attached to the first board and the second board. Fig. 4 is an explanatory drawing of the groove for installing the holder, and Fig. 5 is an illustration of the connection between the first board and the second board. FIG. 11...first substrate, 12...first slit, 13...second slit, 14...
...Holder insertion hole, 21...Holder,
22, 23...Legs, 24...Support column, 29...Mounting groove, 30...Engaging protrusion, 31... ...Second board, 32...First protrusion, 33...Second protrusion, 34...
...Concave portion, 35...Engaged portion.

Claims (1)

[Scope of utility model registration request] A first substrate having a first slit and a second slit formed opposite to each other in the groove direction and a holder insertion hole continuous to the outside of the first slit, and a holder insertion hole of the first substrate. A pair of legs are fixed to the first substrate by pinching the inner edges on both sides of the holder insertion hole inserted into the holder, and a groove is provided above the legs to face the first slit. A support column is formed with a holder provided with an engaging protrusion in the groove, and a first support column on both sides of the lower side.
A protruding piece and a second protruding piece are formed, the lower side of which is brought into contact with the first substrate, the first protruding piece is inserted between the legs of the holder and into the first slit, and the second protruding piece is formed. is inserted into the second slit of the first substrate, and a recess provided on the outer side of the second projecting piece is engaged with the outer inner edge of the second slit,
Further, a second substrate is provided on the side of the first slit which engages with the groove for mounting the holder and has an engaged portion on this side that engages with the engaging protrusion of the holder. A board mounting device featuring: