JP2009188138A - Attaching structure for slave substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple attaching structure for a slave substrate in which the slave substrate is tightly attached in an upright state to a master substrate using an electronic component mounted on the slave substrate. <P>SOLUTION: The attaching structure for the slave substrate is provided for attaching the slave substrate 1 to the master substrate 2 in the upright state, wherein the electronic component is mounted on the slave substrate 1 while having its portion positioned at an end of the slave substrate on the side of the master substrate, a first notch portion 1d is formed in an end surface on one side of the end on the side of the master substrate, and a second notch portion 1e is formed in the end on the side of the master substrate. The master substrate is formed with a fitting-in portion 2e in which the end of the slave substrate on the side of the master substrate is fit and a fitting-in hole in which at least a portion of the electronic component is fitted, and at the fitting-in portion 2e, a lock portion is formed which restricts the fitting-in position of the end of the slave substrate on the side of the master substrate by engaging the first notch portion of the slave substrate with the end on one side and fitting the second notch portion at the position corresponding to the second notch portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an attachment structure for a child board that can be attached to a parent board in a standing manner.

  In an electronic device, a substrate (hereinafter referred to as a “parent substrate”) housed in a case and disposed on a bottom plate, and a substrate (electrically and mechanically connected and fixed) that is vertically installed on the parent substrate. (Hereinafter referred to as “child board”). In the board having such a structure, it is necessary to firmly stand the child board on the parent board, and connectors and lead frames are conventionally used.

In addition, as a structure that vertically fixes the standing board (child board) to the main board (parent board), a connector is attached to the lower end of the standing board, and the terminal of the connector is inserted into the terminal insertion hole of the main board and soldered, It is electrically connected to the main board and mechanically fixed, and the lower ends of the left and right sides of the standing board protrude downward and are inserted into insertion holes formed in the main board. Furthermore, a pair of left and right holes are formed in the lower part on both the left and right sides of the standing board, and two finger holes on the holding legs are inserted into the holes, and the lower ends of the holding legs are placed on the back and front of the standing board on the main board. There has been proposed a mounting structure of a standing board that is inserted in an insertion hole that is slightly shifted to the left and right and is held in a standing position on the main board by holding the standing board with holding legs positioned on the front and back (for example, , See Patent Document 1).
Japanese Unexamined Patent Publication No. 2006-156833 (page 6-7, FIG. 1)

  In the structure in which the sub board and the main board are connected by the connector, the cost of the connector is increased and an extra space for mounting the connector is required, which is not very effective. In addition, in the structure in which the child board and the parent board are connected by the lead frame, the lead frame is weak against the bending direction force. There is a problem that the solder is peeled off and the electrical connection becomes defective and causes a failure.

  In addition, in the mounting structure of the standing board described in Patent Document 1, a connector is attached to the lower end of the standing board, inserted into the terminal insertion hole of the main board, and soldered to electrically connect the standing board and the main board. In order to mechanically fix the connection, the cost of the connector is increased, and an extra space for attaching the connector is required.

  Furthermore, the finger-shaped portion of the holding leg is inserted into the holes formed in the lower portions of the left and right sides of the standing board, and the lower end portion of the holding leg is inserted into the insertion hole drilled in the main board to hold the standing board and In order to mount in a standing state on the substrate, it is necessary to provide a large number of holes in the standing substrate and the main substrate, and the degree of freedom of layout of electronic components, wiring patterns, and the like is limited. Moreover, since a connector, a holding leg, etc. are required, the number of parts increases, cost becomes high, and the assembly | attachment effort takes.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a child board mounting structure in which a child board can be firmly installed and attached to a parent board with a simple structure using electrical components mounted on the child board. There is.

In order to solve the above-described problem, a child board mounting structure according to claim 1 of the present invention includes:
In the mounting structure of the sub-board that is mounted by standing the sub-board on the parent board,
An electrical component is mounted on the sub-board so that at least a part of the electrical component is located at the end of the sub-board side of the sub-board, and a first notch is formed on one end face of the end of the main board-side. A second notch is formed at the parent substrate side end,
The parent board is formed with a fitting part for fitting the parent board side end of the child board, and a fitting hole for fitting at least a part of the electrical component,
The first notch portion of the child board is engaged with one end of the fitting portion, and the child board is fitted into the second notch portion at a position corresponding to the second notch portion. An engaging portion for restricting the fitting position of the end portion on the parent substrate side is formed.

  The first notch portion of the sub board is hooked on the engaging portion of the fitting portion of the main board, and the sub board is rotated using this as a fulcrum, until the second notch is locked to the locking section. The board side end portion is fitted into the fitting portion. At the same time, the electrical component mounted on the sub board is inserted into the insertion hole of the main board, and a part of the surface opposite to the attachment surface to the sub board (near the end of the sub board side of the sub board) is opposite the insertion hole. Abut the end surface. As a result, the child board and the electrical component are sandwiched between the fitting portion and the fitting hole of the parent board, and are attached to the parent board with sufficient strength with respect to the bending direction (tilt) perpendicular to the parent board. Then, the connection terminals of the sub board and the corresponding lands of the main board 2 are soldered and electrically connected. The child board and the parent board are also mechanically fixed by soldering the lands.

  This eliminates the need for an extra component such as a dedicated connector or a lead frame for fixing the child board and the mother board, thereby reducing the cost and improving the assembling workability. Further, the degree of freedom of the attachment position of the child board to the parent board increases, and the layout becomes easy.

A child board mounting structure according to claim 2 of the present invention is the child board mounting structure according to claim 1,
In the state where the electrical component is fitted in the hole of the parent board, at least a part of the surface opposite to the attachment surface to the child board is in contact with the opposite end surface of the fitting hole of the parent board. Yes.

  At least a part of the surface opposite to the mounting surface of the electrical component mounted on the sub board on the sub board is brought into contact with the opposite end face of the fitting hole of the main board to prevent the sub board from falling with respect to the main board. To do.

Moreover, the sub-board mounting structure according to claim 3 of the present invention is the sub-board mounting structure according to claim 1 or 2,
The electrical component is a connector for connecting the sub board to an external device.

  A connector that is connected to an external device is used as an electrical component that is mounted on the sub-board to prevent falling. This eliminates the need for an extra component such as a dedicated connector or lead frame for attaching the child board to the parent board, thereby reducing costs and improving assembling workability.

Moreover, the attachment structure of the sub-board according to claim 4 of the present invention is
In the mounting structure of the sub-board that is mounted by standing the sub-board on the parent board,
On the child board, the electrical component is mounted such that the surface facing the plate surface of the parent board is positioned near the parent board side end of the child board,
The parent board is formed with a fitting portion into which the parent board side end of the child board is fitted.
The electrical component has a surface that faces the plate surface of the parent substrate in contact with the plate surface of the parent substrate in a state where the parent substrate side end portion of the child substrate is fitted into the fitting portion of the parent substrate. It is said.

  The notch portion of the sub board 1 is hooked on the front end portion of the fitting portion of the main board, and the sub board is rotated using this as a fulcrum to fit the end portion on the main board side. The substrate is brought into contact with the plate surface. As a result, the child board can be attached perpendicularly to the parent board, and the child board is prevented from falling (bending) toward the electric component.

  In addition, the parent board does not require a fitting hole for fitting an electric component, the mounting area is increased correspondingly, the degree of freedom of layout is increased, and the strength reduction of the parent board is suppressed.

A child board mounting structure according to claim 5 of the present invention is the child board mounting structure according to claim 4,
The electrical component is a connector for connecting the sub board to an external device.

  By using connectors that connect to external devices as electrical components to be mounted on the sub board, no extra parts such as a dedicated connector or lead frame for attaching the sub board to the main board are required, reducing costs and assembling work The improvement of the property is achieved.

  According to the present invention, the first notch portion of the daughter board is hooked on the engaging portion of the fitting portion of the mother board, and the daughter board is rotated using this as the fulcrum, and the second notch portion is locked to the locking portion. Fit the end of the sub-board on the parent board side into the fitting part, and insert the electrical component mounted on the sub-board into the insertion hole of the main board, and at least part of the surface opposite to the mounting surface to the sub-board By contacting the opposite end faces of the insertion holes, the child board and the electrical components are sandwiched between the insertion part and the insertion holes of the parent board, and are attached perpendicularly to the parent board and with sufficient strength in the bending direction (tilt). It is done.

  In addition, by using the electrical components mounted on the sub board, there is no need for extra parts such as connectors and lead frames for fixing the sub board and the main board, thereby reducing costs and assembling. Workability is improved.

  Hereinafter, an attachment structure of a child board according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a right side view of a daughter board according to the present invention. The sub board 1 has, for example, a horizontally long rectangular shape, and is located along the lower end face 1c at a position below the front end face 1a, for example, from the lower end face 1c with a distance of about the thickness of the parent board 2 indicated by a two-dot chain line. A notch 1d is provided. The notch 1d has the same width as the thickness of the parent substrate 2, and the length (depth) is, for example, about twice the width. This notched portion 1d engages with the front end portion of the fitting portion 2e when the child substrate 1 is fitted into the fitting portion 2e of the parent substrate 2 as will be described later. The lower part of the sub board 1 is a parent board side end for attaching to the main board 2.

  A notch 1e is formed at a position near the rear portion of the lower end surface 1c of the sub board 2, for example. The notch 1e has a depth (height) from the lower end surface 1c equal to the height of the upper end surface of the notch 1d, and its width is substantially the same as or slightly wider than the thickness of the parent substrate 2. It is said to be about. This notch portion 1e cooperates with the notch portion 1d to regulate the fitting position (depth of fitting) into the fitting portion 2e formed on the parent substrate 2 at the lower end portion of the child substrate 1, and falls off from the fitting portion 2e. In addition to preventing this, the lower end surface 1c is made parallel to the back surface 2b of the parent substrate 2 and functions as a stopper. In addition, as shown in FIG. 1, the daughter board 1 has a plurality of small holes 1i formed at predetermined positions on the upper edge and a plurality of cutouts 1j formed at predetermined positions on the lower end surface 1c.

  The sub board 1 is, for example, a double-sided printed board, and a predetermined position of the front surface 1f shown in FIG. 1 and the back face 1g shown in FIG. 2, for example, the surface of the parent board 2 in the rear part 1h from the rear end face to the rear end face 1b of the notch 1e. A plurality of lands 3, 3 ′, 4, 4 ′ are provided in a row at predetermined positions on both the upper and lower sides between 2 a and the back surface 2 b with a gap in the longitudinal direction. A plurality of electronic components (not shown) are mounted on, for example, the upper lands 3 and 4 of the rear portion 1h of the front surface 1f and the back surface 1g, and are connected to the corresponding lands 3, 3 ', 4, 4'. . Further, the front end face 1a and the rear end face 1b of the sub board 1 are provided with knurling for preventing slipping, and can be easily attached to and detached from the main board 2.

  As shown in FIGS. 2 and 3, an electrical component such as a connector 5 is mounted on the surface 1 f of the sub board 1. The connector 5 is for connecting to an external device, and has, for example, a substantially rectangular parallelepiped shape that is slightly smaller than the child board 1. That is, the height of the connector 5 is slightly lower than the height of the sub board 1, and the length (depth) is slightly longer than the length from the front end face 1a of the sub board 1 to the notch 1e, as shown in FIG. As seen from the front, it has a square shape. As shown in FIG. 3, a plug insertion hole 5b is provided in the front end face 5a.

  Further, as shown in FIG. 3, a plurality of locking claws 5i and 5j are formed to protrude along the longitudinal direction at both upper and lower ends of the attachment surface (lower surface) 5c of the connector 5 to the child board 1. These locking claws 5i, 5j are formed at positions corresponding to the small holes 1i formed in the upper edge portion of the child substrate 1 shown in FIG. 1 and the notches 1j formed in the lower end surface 1c.

  As shown in FIG. 3, the connector 5 has a mounting surface (lower surface) 5 c in contact with the back surface 1 g of the child board 1, and a side surface 5 e located on the lower side in the figure is located below the notch 1 d of the child board 1. As shown in FIG. 2, the rear surface 5f is disposed so as to be flush with the front end surface 1e 'of the notch 1e. As shown in FIG. 1, the connector 5 is connected to each of the connecting terminals 5h by being inserted into the holes of the lands 6 provided corresponding to the child board 1 and soldered, and the locking claws 5i and 5j are connected to each other. These are inserted into the corresponding small holes 1i and notches 1j, fixed as shown in FIGS. 2 and 3, and mounted on the child board 1.

  As shown in FIG. 2, the front end portion of the connector 5 that protrudes from the front end face 1 a of the sub-board 1 is mounted on the sub-board 1. This is because, when the sub board 1 is attached to the main board 2 and accommodated in the case of the device, the front end of the connector 5 is fitted into the insertion hole of the plug provided in the case so that the sub board 1 is loosened. This is to prevent sticking.

  As shown in FIG. 4, the parent board 2 is fitted with a fitting portion 2 e for fitting the lower end portion of the child board 1 perpendicularly to the plate surface and a lower portion of the connector 5 in the vicinity of the end surface 2 c on one side. The fitting hole 2k is formed. The fitting portion 2e includes a notch portion 2f and a slit (long hole) 2g, and the notch portion 2f is formed at a predetermined position from the end surface 2c. The notch 2f has the same width as the thickness of the daughter board 1 indicated by a two-dot chain line, and its length is lower than the rear end face 1d 'of the notch 1d of the front end face 1a of the daughter board 1 shown in FIG. The length of the notch 1e of the end surface 1c is the length up to the front end surface 1e '.

  A plurality of notches 2j are formed on the side surface of the notch 2f. These notches 2j are provided with a locking claw 5g of the connector 5 that passes through the notch 1j at the lower end of the child board 1 when the daughter board 1 is fitted into the mother board 2, as will be described later, and a connection terminal located at the lower part. This is to avoid interference with the 5 h tip.

  The slit 2g is a hole for fitting the lower end portion of the rear portion 1h from the rear end surface to the rear end surface 1b of the notch portion 1e of the daughter board 1, and has the same interval as the width of the notch portion 1e from the rear end surface 2f "of the notch portion 2f. And is formed on the same straight line as the notch 2f, and a portion 2h between the notch 2f and the slit 2g is used as a locking portion (hereinafter referred to as "locking portion 2h"). As a stopper that is fitted into the notch 1e of the lower end surface 1c of the substrate 1 and restricts the fitting position (fitting depth) of the lower end of the child substrate 1 to the fitting portion 2e to prevent the child substrate 1 from falling downward. It has the function of

  On both sides of the slit 2g and on the surface 2a, as shown in FIG. 4, lands 7, 7 'corresponding to the lands 3, 3' formed on the surface 1f of the sub board 1 and connectable by soldering are provided in the longitudinal direction. A plurality are arranged side by side at intervals. Similarly, on both sides of the slit 2g of the back surface 2b, a plurality of lands (not shown) corresponding to the lands 4 and 4 'formed on the back surface 1g of the sub board 1 and connectable by soldering are spaced apart in the longitudinal direction. It is provided side by side.

  The fitting hole 2k is sized such that the connector 5 can be fitted therein, one side is connected to the notch 2f, the rear end surface 2k ″ is flush with the rear end surface 2f ″ of the notch 2f, and the front is the parent substrate 2 Opening is formed in the end face 2c. Since the front portion of the fitting hole 2k is open to the end surface 2c, the front portion of the connector 5 protrudes from the end surface 2c of the parent substrate 2 when the child substrate 1 is attached to the parent substrate 2, as described above. It can be fitted into the insertion hole of the provided plug.

  The parent board 2 is, for example, a double-sided printed board, and a plurality of electronic components (not shown) are mounted on the front surface 2a and the back surface 2b. Then, some electronic components and wiring patterns among the plurality of electronic components mounted on the surface 2a are soldered and connected to the lands 7 and 7 '. Further, some electronic components and wiring patterns among the plurality of electronic components mounted on the back surface 2b are soldered and connected to lands (not shown) provided on the back surface 2b. In this way, the sub board 1 and the main board 2 are formed.

  The procedure for attaching the child board 1 to the parent board 2 will be described below. First, as shown in FIG. 5, the lower end of the front end of the child board 1 and the connector 5 is fitted obliquely downward from the upper surface 2a of the main board 2 into the notch 2f of the fitting part 2e and the front part of the fitting hole 2k. The front end 2f ′ of the notch 2f is fitted and engaged with the portion 1d, and the lower front end of the connector 5 is fitted into the front of the hole 2k.

  Next, the child substrate 1 is rotated toward the parent substrate 2 as indicated by an arrow with the contact portion between the back end surface 1d ′ of the notch 1d and the front end 2f ′ of the notch 2f as a fulcrum, so that the notch of the child substrate 1 is cut. The lower end portion from the portion 1d to the notch portion 1e is fitted into the notch portion 2f, and the lower end portion of the rear portion 1h is fitted into the slit 2g. The lower end portion of the rear portion 1h of the sub board 1 is fitted into the slit 2g to a position where the locking portion 2h of the parent board 2 is fitted and locked in the notch portion 1e of the lower end surface 1c.

  In this state, the notch portion 1d of the front end face 1a is fitted and locked in the front end portion 2f ′ of the notch portion 2f of the parent substrate 2, and the lower end portion between the notch portions 1d and 1e is the notch portion. The rear portion 1h is fitted into the slit 2g and locked. The sub board 1 is vertically fitted into the fitting section 2e of the main board 2 by the notches 1d and 1e, and the lower end protrudes downward from the back surface 2b of the main board 2 as shown in FIG. The lower end surface 1 c of the sub board 1 is parallel to the back face 2 b of the main board 2.

  Further, as shown in FIGS. 7 and 8, a part of the connector 5 mounted on the front surface 1f of the sub board 1 is fitted into the fitting hole 2k of the main board 2 to be attached to the sub board 1 (lower surface) 5c. A part of the surface (upper surface) 5d on the opposite side, that is, the lower end 5d ′ abuts on the opposite end surface 2k ′ of the fitting hole 2k. Thereby, the connector 5 is fixed to the parent substrate 2.

  Thereby, the sub board | substrate 1 is attached to the main board | substrate 2 perpendicularly | vertically, and it is prevented that it inclines (bends) right and left. Then, the lands 3 and 3 ′ of the sub board 1 and the corresponding lands 7 and 7 ′ of the parent board 2 and the lands 4 and 4 ′ of the sub board 1 and the corresponding lands (not shown) of the parent board 2 are soldered. Are electrically connected. The sub board 1 and the main board 2 are also mechanically fixed by soldering lands.

  Since the sub board 1 is fitted and inserted into the fitting portion 2e of the main board 2 and the fitting hole 2k together with the connector 5, sufficient strength can be obtained in the bending direction (tilt). This eliminates the need for an extra component such as a dedicated connector or a lead frame for fixing the child board 1 and the mother board 2, thereby reducing the cost and improving the workability of the assembling work. Further, the degree of freedom of the attachment position of the child board 1 to the parent board 2 is increased, and the layout becomes easy.

  In addition, the child board 1 is erected vertically with respect to the parent board 2 by a connector 5 as an mounted electrical component and fixed without falling to the left and right, so that the solder at the connection portion of the mother board 2 is peeled off. It is possible to prevent failure due to poor connection.

  The mother board 2 to which the child board 1 is mounted in this manner is accommodated and fixed in a case (not shown), and the front portion of the connector 5 is fitted into the plug insertion hole provided in the case as described above. . Then, the front end portion of the connector 5 is fitted and fixed to the plug insertion hole of the case, so that the sub board 1 is further prevented from shaking and peeling of the solder as described above is prevented.

  The notch 1e on the lower end surface 1c of the sub board 1 may be provided at an optimum position according to the size of the electric component to be mounted, the mounting position, and the like, and the locking part 2h of the parent board 2 is also the same as the notch 1e. What is necessary is just to provide in a corresponding position. Along with this, the lengths of the notch 2f and the slit 2g of the fitting portion 2e may be set.

  Furthermore, in the above-described embodiment, the connector 5 connected to the external device is used as the electrical component mounted on the sub-board 1. However, the present invention is not limited to this, and other electrical components may be used. Then, a fitting portion for fitting the parent substrate side end portion of the child substrate 1 into the parent substrate 2 and a fitting hole for fitting at least a part of the electrical component are provided. As a result, the attachment position of the child board 1 to the parent board 2 can be selected at an optimum position according to the mounting components of these boards.

  FIG. 9 shows a second embodiment of the present invention. The sub board 11 is mounted with the electrical component 15 on the back surface 11b. The electrical component 15 is mounted such that a surface 15a facing the surface (plate surface) 12a of the parent substrate 12 comes into contact with the surface 12a of the parent substrate 12 when the child substrate 11 is attached to the parent substrate 12. Yes.

  The sub board 11 is a double-sided printed board as described above, and a plurality of lands 13 are arranged at predetermined positions on the surface 11a with a space in the longitudinal direction. Similarly, on the back surface 11b, a plurality of lands (not shown) are arranged at regular positions corresponding to the lands 13 on the front surface 11a with a gap in the longitudinal direction. A plurality of electronic components (not shown) are mounted above the land 13 on the surface 11 a of the rear part 11 c and connected to the corresponding land 13. Similarly, a plurality of electronic components (not shown) are also mounted above the land on the back surface 11b of the rear portion 1h and connected to the corresponding land.

  A slit-like fitting portion 12 c for fitting the parent substrate side end portion (lower end portion) 11 d of the child substrate 11 is formed on the parent substrate 12. Lands 14 and 14 'are formed on the upper surface 12a of the parent substrate 12 so as to correspond to lands 13 on the front surface 11a of the subsidiary substrate 11 and lands (not shown) on the rear surface 11b on both sides of the inner portion of the fitting portion 12c. .

  Then, the parent board side end (lower end) 11d of the sub board 11 is fitted into the fitting section 12c of the main board 12, and the surface 15a opposite to the surface 12a of the main board 12 of the electrical component 15 as shown in FIG. The substrate 12 is brought into contact with the surface 12a. Next, lands 13 on the front surface 11 a of the sub-board 11 and lands (not shown) on the back surface 11 b side are connected to corresponding lands 14 and 14 ′ of the main board 12 by solder 16.

  As a result, the child board 11 can be vertically installed with respect to the parent board 12, and the child board 11 can be prevented from falling, particularly to the electrical component 15 side. Further, since the base board 12 does not require a fitting hole for fitting the electric component 15, the mounting area is increased by that amount, the degree of freedom in layout is increased, and a decrease in strength of the base board 12 is suppressed. . When the electrical component 15 has a cylindrical outer shape like an electrolytic capacitor, the contact state between the surface 15a and the surface 12a is line contact. Alternatively, when the surface 15a is not completely parallel to the surface 12a in terms of mounting accuracy, the contact state between the surface 15a and the surface 12a is line contact or point contact. Even if the contact state between the electrical component 15 and the parent substrate 12 is such a line contact or point contact, the child substrate 11 is prevented from falling.

  As described above, according to the present invention, at least a part of the parent board side end portion of the child board and the electrical component is sandwiched between the fitting part and the fitting hole of the parent board, so that the child board is perpendicular to the parent board and It can be attached with sufficient strength with respect to the bending direction (tilt). Then, the lands of the sub-board and the corresponding lands of the main board are soldered and electrically connected, so that they are also mechanically fixed. This eliminates the need for an extra component such as a dedicated connector or a lead frame for fixing the child board and the mother board, thereby reducing the cost and improving the assembling workability. Further, the degree of freedom of the attachment position of the child board to the parent board increases, and the layout becomes easy.

  Further, by bringing a small part of the surface on the opposite side of the mounting surface of the electrical component mounted on the child board to the opposite surface of the fitting hole of the parent board, the child board is in contact with the parent board. Can be prevented from falling down.

  In addition, by using a connector for connecting the electrical components mounted on the slave board to an external device, no extra parts such as a dedicated connector or lead frame for attaching the slave board to the master board are required, which reduces the cost. Reduction and improvement in workability of assembly work can be achieved.

  Further, only the end portion of the mother board on the side of the mother board is fitted and fixed in the fitting portion of the mother board, and the surface opposite to the board surface of the mother board of the electrical component mounted on the child board is the board surface (front surface) of the mother board. By making them contact with each other, the child board can be easily set up vertically and attached to the parent board, and the child board can be prevented from falling to the electric component side. In addition, the parent board does not require a fitting hole for fitting an electric component, the mounting area is increased correspondingly, the degree of freedom of layout is increased, and the decrease in strength of the parent board is suppressed.

It is a right view of the sub-board of the sub-board mounting structure according to the present invention. FIG. 2 is a left side view of the daughter board shown in FIG. 1. FIG. 2 is a front view of the daughter board shown in FIG. 1. FIG. 2 is a partial top view of the daughter board shown in FIG. 1. FIG. 5 is an explanatory diagram showing a procedure for attaching the child board shown in FIG. 1 to the parent board shown in FIG. 4. It is a side view of the state which attached the sub board | substrate shown in FIG. 4 to the main board | substrate. FIG. 7 is a plan view of a sub board and a main board shown in FIG. 6. FIG. 7 is a front view of the sub board and the main board shown in FIG. 6. It is an assembly perspective view showing a second embodiment of a child board mounting structure according to the present invention. It is a front view of the state which attached the sub board | substrate shown in FIG. 9 to the main board | substrate.

Explanation of symbols

1 sub-board 1a front end face 1b rear end face 1c lower end face 1d, 1e notch 1d 'back end face 1e' front end face 1f front face 1g back face 1h rear 1i small hole 1j notch 2 parent board 2a front face 2b back face 2c notch part 2e notch part 2f Part 2f 'front end part 2f "rear end face 2g slit 2h locking part 2j notch 2k insertion hole 2k end face 2k" rear end face 3, 3' land 4, 4 'land 5 connector (electrical component)
5a Front end surface 5b Opening 5c Lower surface (Mounting surface)
5d Upper surface 5d 'Lower end portion 5e Side surface 5f Rear surface 5g Locking claw 5h Locking claw 6, 6' Land 7, 7 'Land 11 Subboard 11a Front surface 11b Back surface 11c Rear portion 11d Parent substrate side end (lower end)
12 parent substrate 12a surface 12c fitting portion 13, 14, 14 'land 15 electrical component 15a surface 16 solder

Claims (5)

In the mounting structure of the sub-board that is mounted by standing the sub-board on the parent board,
An electrical component is mounted on the sub-board so that at least a part of the electrical component is located at the end of the sub-board side of the sub-board, and a first notch is formed on one end face of the end of the main board-side. A second notch is formed at the parent substrate side end,
The parent board is formed with a fitting part for fitting the parent board side end of the child board, and a fitting hole for fitting at least a part of the electrical component,
The first notch portion of the child board is engaged with one end of the fitting portion, and the child board is fitted into the second notch portion at a position corresponding to the second notch portion. An attachment structure for a child board, wherein a locking part for restricting a fitting position of the end part on the parent board side of the board is formed.   In the state where the electrical component is fitted in the hole of the parent board, at least a part of the surface opposite to the attachment surface to the child board is in contact with the opposing end face of the fitting hole of the parent board. The child board mounting structure according to claim 1.   The child board mounting structure according to claim 1, wherein the electrical component is a connector for connecting the child board to an external device. In the mounting structure of the sub-board that is mounted by standing the sub-board on the parent board,
On the child board, the electrical component is mounted such that the surface facing the plate surface of the parent board is positioned near the parent board side end of the child board,
The parent board is formed with a fitting portion into which the parent board side end of the child board is fitted.
The electrical component has a surface that faces the plate surface of the parent substrate in contact with the plate surface of the parent substrate in a state where the parent substrate side end portion of the child substrate is fitted into the fitting portion of the parent substrate. The sub-board mounting structure.   5. The child board mounting structure according to claim 4, wherein the electrical component is a connector for connecting the child board to an external device.

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