JP3963238B2 - Board holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a substrate holder that assists the self-supporting of a sub-board when the sub-board is erected and attached to a main board.
[0002]
[Prior art]
In response to the demand for higher density of electronic devices, the mounting density of electronic components has been increased, and there is one in which a sub board (sub board) is provided on a main board (mother board). 12 and 13 are explanatory diagrams when a sub-board is provided on a conventional main board. FIG. 12 shows that the male connector 2 is mounted on the sub-board 1 and is attached to the female connector 5 mounted on the main board 4 so that the sub-board 1 is detachably connected to the main board 4 and the connector The sub-board 1 is vertically supported on the main board 4 by the combination of 2 and the connector 5.
[0003]
Further, FIG. 13 shows that each connection terminal 3 of the male connector 2 mounted on the sub board 1 is inserted into each through hole 4a provided in the main board 4 and connected to the circuit pattern formed on the back surface by soldering. That is, the sub board 1 is directly connected to the main board 4 and the sub board 1 is vertically supported on the main board 4 by soldering the connection terminals 3 and the circuit pattern.
[0004]
[Problems to be solved by the invention]
However, in the case where the sub board 1 and the main board 4 shown in FIG. 12 are connected by the connectors 2 and 5, the vibration of the sub board 1 is provided when no locking mechanism is provided between the connectors 2 and 5. For example, the connector 2 of the sub board 1 may be disconnected from the connector 5 of the main board 4 and the sub board 1 may be detached from the main board 4. Further, when the strength of the connectors 2 and 5 is weak, there is a possibility that the sub board 1 may fall down due to weights, vibrations, etc. of a large number of electronic components mounted on the sub board 1.
[0005]
In the case where the connector 2 of the sub board 1 is directly connected to the main board 4 as shown in FIG. 13, the sub board 1 is supported vertically on the main board 4 only by a plurality of connection terminals 3 of the connector 2. Therefore, it is easy to vibrate, and the load due to the vibration is concentrated on the soldering portion between the connection terminal 3 and the circuit pattern of the main board 4 so that the solder is peeled off, or a large number of electronic components mounted on the sub-board 1 There is a risk that the sub-board 1 may fall down due to the weight or vibrations of the device, resulting in a decrease in reliability.
[0006]
Further, since the sub-board 1 is supported vertically on the main board 4 only by the plurality of connection terminals 3 of the connector 2, the sub-board 1 is mounted on the main board 4 and the connection terminals 3 of the connector 2 are connected to the main board 4. In the case of carrying to the step of soldering to the circuit pattern, the sub-board 1 is wobbled during the carrying or is inclined due to the weight of the mounted electronic component. Therefore, in order to prevent the sub-board 1 from being soldered and fixed to the main board 4 in a tilted state, the sub-board 1 is temporarily fixed with a tape or the like so that the sub-board 1 is not tilted, and then flows to the soldering line. There is a problem that it takes time and effort.
[0007]
The present invention has been made in view of the above points, and an object of the present invention is to provide a substrate holder for assisting self-support when a second substrate is erected on a first substrate.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a substrate holder according to the present invention comprises:
With punched <a> a metal plate by press working into a predetermined shape, it is one that is formed by bending in the thickness direction, in particular
< b > a bottom portion that secures a predetermined area and forms a contact portion with the first substrate;
< c > a leg portion that is bent downward from the bottom portion and extends below the bottom portion, and is fixed to the first substrate;
< d > An interval corresponding to the thickness of a second substrate that is bent from one side of the bottom portion and extends upward from the bottom portion and is erected on the first substrate. A pair of sandwiching portions provided,
< e > Folded from the other side of the bottom portion to the upper side thereof, extends upward from the bottom portion, and is provided so as to be able to contact the edge of the second substrate held by the pair of holding portions. A supported portion;
< f > Projecting from the support portion toward the sandwiching portion facing a gap formed between the pair of sandwiching portions, and on an edge portion of the second substrate sandwiched by the pair of sandwiching portions Engaging claw to engage
It is characterized by comprising.
[0009]
The substrate holder has a leg portion fixed to the first substrate and a support portion suspended from the first substrate. The second substrate mounted on the first substrate is nipped by the nipping portion and is vertically supported by the first substrate, and is locked by a locking claw so as not to deviate. As a result, the second substrate is held perpendicularly to the first substrate to assist self-supporting.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same member as FIG.
As shown in FIGS. 1 to 4, the substrate holder 10 is for assisting the self-supporting of the sub-substrate as the second substrate that is placed perpendicularly to the main substrate as the first substrate and directly attached thereto. . The substrate holder 10 includes a support portion 11 that supports the sub-board and two leg portions 12 that fix the support portion 11 to the main substrate. The support portion 11 is bent upward on both sides of the bottom portion 13. The side portion 17 has a substantially U-shape when viewed from the side, and two left and right sandwiching portions 15 and 16 are formed on one side of the bottom portion 13 with a gap 14. The other side portion 17 has an upper portion extending outward. (FIG. 2). The leg portions 12 and 12 are formed at both left and right end portions of the bottom portion 13 and are bent at a right angle downward from the center of the bottom portion 13 (FIG. 3). This is due to the requirement of front-rear symmetry when using an automatic insertion machine.
[0011]
As shown in FIG. 1, the sandwiching portions 15, 16 are formed so that the upper portions 15 a, 16 ba are bent in an inverted U shape and face each other. Note that the upper portions 15a and 16a are actually formed by stamping into an inverted U shape as shown in the figure by pressing. Thereby, elastic force is given to upper parts 15a and 16a. The gap 14 'between the tips of the upper portions 15a and 16a is set to be slightly narrower than the thickness of the sub-board so that the sub-board can be elastically sandwiched. As a result, it is possible to satisfactorily cope with variations in the thickness of the sub-board. Further, the gap 14 between the opposing end surfaces of the lower portions 15b, 16b of the sandwiching portions 15, 16 is set slightly wider than the plate thickness of the sub-board. Thus, the holding portions 15 and 16 elastically hold the side portion of the sub-board from both sides by the upper portions 15a and 16a, and the gap 14 between the lower portions 15b and 16b is set slightly wider than the thickness of the sub-board. Thus, when a connector is provided on the sub-board, it is easy to fit into the through hole of the main board or the connector on the receiving side.
[0012]
As shown in FIG. 2, the side portion 17 is slanted outward so that the lower portion 17 a is slightly inclined toward the inner side (the holding portions 15 and 16 side) and the upper portion 17 b is separated from the holding portions 15 and 16. The upper end portion 17c is formed so as to be inclined slightly upward and to extend upward in a substantially vertical direction and to expand outward in a substantially crank shape. A locking claw 17d is integrally formed at the center of the lower end of the upper portion 17b toward the gap 14 and obliquely downward along the inclination of the upper portion 17b. The locking claw 17d is formed by cutting and raising from the lower portion 17a. The side portion 17 can be pressed against the side end surface of the sub-board held by the holding portions 15 and 16 with a slight elastic force. As shown in FIG. 6, the locking claw 17 d is engaged with a recess 1 d as an engaging portion formed on the sub-board 1 to be described later, so that the sub-board 1 can be locked. The inclination of the upper part 17b of the side part 17 makes it easy to insert the sub-board 1 by cutting away a corner 1e of a lower end surface 1c of the sub-board 1 described later. In addition, ribs 15c, 16c, and 17e are provided in the bent portions of the bottom portion 13, the sandwiching portions 15 and 16, and the side portion 17, respectively, and the stability of the shapes of the sandwiching portions 15 and 16 and the side portion 17 and Reinforcement is planned.
[0013]
The substrate holder 10 having such a shape is integrally formed by pressing with a metal member, for example, an iron plate, and galvanized. As a result, the substrate holder 10 can provide elastic force to the upper portions 15a and 16a, the side portions 17 and the locking claws 17d of the holding portions 15 and 16 for holding the sub-board, and is also rust-proof and leg portions 12 and 12. This makes it easy to solder the main board to the land.
[0014]
As shown in FIG. 5, the substrate holder 10 has legs 12, 12 that are long, and the legs 12, 12 are connected at the lower end by a continuous portion 12 ′. A long strip-shaped mount 20 is provided with a large number (several hundred to several thousand) at predetermined intervals along the longitudinal direction, and the lower portions of the leg portions 12 and 12 are fixed by the adhesive tape 21 and taped. The taping board holder 22 is used. The taping substrate holder 22 is formed into a so-called ninety-nine fold by alternately folding the mount 20 with an appropriate length.
[0015]
The taping board holder 22 is mounted on an automatic insertion machine, and the mount 20 is sequentially fed through the feed holes 20a. The substrate holder 10 is chucked by the automatic insertion machine, the legs 12 and 12 are cut at a predetermined length position (FIG. 1), separated from the mount 20 and mounted on the main substrate 4 as described later. .
As shown in FIG. 7, the main board 4 has a connector 5 connected to the connector 2 of the sub board 1, and the legs of the board holder 10 are respectively positioned at the positions holding the left and right side portions 1 a and 1 b of the sub board 1. A through hole 4b through which the portions 12, 12 are inserted is formed. As shown in FIG. 6, the substrate holder 10 has leg portions 12 and 12 inserted through the holes 4b, and as shown in FIG. 6, the tip portions protruding from the lands 4c provided on the back surface are bent and soldered to the lands 4c. Is done. Thereby, the substrate holder 10 is fixed vertically on the main substrate 20. In this way, as shown in FIG. 7, the two substrate holders 10 and 10 are mounted on the main substrate 4 so as to face each other.
[0016]
On the other hand, as shown in FIGS. 6 and 7, both end portions 1 a, 1 b of the left and right side portions 1 a, 1 b of the sub-board 1 are respectively provided with sandwiching portions 15, 16 upper portions 15 a of the substrate holder 10, In the state inserted between 16a and the lower end surface 1c contact | abutted to the bottom part 13, the recessed parts 1d and 1d as an engaging part engaged with each latching claw 17d and 17d are provided. Further, the sub-substrate 1 has both corners 1e of the lower end surface 1c cut out obliquely. The sub-substrate 1 is formed between the lower portion of the side portion 17 and the bottom portion 13 of the substrate holder 10 as well as being easily inserted into the substrate holder 10 as described above because the corner portion 1e is notched. Interference with the ribs 17e is prevented.
[0017]
The operation will be described below.
As shown in FIG. 7, when the sub-board 1 is mounted on the main board 4, the sub-board 1 is inserted into the slits 14 and 14 of the left and right substrate holders 10 and 10 with the left and right side portions 1a and 1b respectively. Pushed down. At this time, the upper portions 17b and 17b of the side portions 17 and 17 of the left and right substrate holders 10 and 17 and the locking claws 17d and 17d are formed by the corners 1e and 1e and the end surfaces 1a ′ and 1b ′ at the lower end of the sub-board 1. Pressed to escape to the outside. Thereby, insertion of the sub board | substrate 1 to the board | substrate holders 10 and 10 becomes easy. As the sub-board 1 is inserted into the board holder 10, the connection terminal 3 of the connector 2 is inserted into the connector 5 of the main board 4.
[0018]
As shown in FIG. 8, in each of the left and right substrate holders 10, when the lower end surface 1 c of the sub-board 1 comes into contact with each bottom portion 13, each locking claw 17 d engages with each recess 1 d of the sub-board 1. In this state, the connector 2 of the sub board 1 is connected to the connector 5 of the main board 4. The sub-board 1 is vertically supported by the main board 4 without being shaken by elastically holding the left and right side parts 1a and 1b by the upper parts 15a and 16a of the holding parts 15 and 16 of the left and right board holders 10, respectively. The left and right end faces 1a ′ and 1b ′ are respectively locked by the side portions 17 to prevent the positional displacement in the left-right direction, and the left and right locking claws 17d prevent the displacement in the removal direction. In this way, the left and right substrate holders 10 assist the sub-substrate 1 to stand on the main substrate 4. The sub-board 1 is prevented from being tilted due to the weight of the mounted electronic component, vibration, or the like by being assisted by the board holder 10.
[0019]
When the sub-board 1 is removed from the main board 4, as shown in FIG. 9, the operator pushes the upper ends 17c and 17c of the left and right board holders 10 and 10 outward as indicated by arrows B and B '. The locking claws 17d and 17d are removed from the recesses 1d and 1d of the sub-board 1, the engagement is released, and the sub-board 1 is pulled upward as indicated by an arrow C.
FIG. 10 shows a case where each connection terminal 3 of the connector 2 of the sub-board 1 is connected to a circuit pattern of the main board 4 by soldering. In this case, the left and right substrate holders 10 and 10 are mounted on the main substrate 4 and the tip portions of the leg portions 12 and 12 are bent and brought into contact with the lands 4c and temporarily fixed (FIG. 6). Installing. The substrate holder 10 is vertically supported on the main substrate 4 by the legs 12, and the sub-substrate 1 is held vertically on the main substrate 4 by the substrate holders 10 and 10 at both side portions 1 a and 1 b, respectively. Therefore, the sub-board 1 is prevented from being shaken in the middle of being transported to the soldering process or inclined due to the weight of the mounted electronic component. In the soldering process, the electronic components mounted on the main board 4, the leg portions 12 of the board holder 10, the connection terminals 3 of the connector 2, and the like are soldered. The sub-board 1 is prevented from wobbling because both side portions 1a and 1b are vertically supported by the board holders 10 and 10, and the solder of the connection terminal 3 is prevented from peeling off.
[0020]
FIG. 11 shows a case where the sub board 1 is placed perpendicularly to the main board 4 and the sub board 1 and the main board 4 are connected by a plurality of lead wires 25 to 28. In this case as well, the left and right side portions 1a and 1b of the sub-board 1 are vertically supported by the board holders 10 and 10 as described above. Thereby, the sub board | substrate 1 is prevented from falling down, the horizontal position shift, and the upward movement.
[0021]
In each of the above embodiments, the recess 1d is formed on the end surface of the sub-board 1, and the locking claw 17d formed on the side portion 17 of the substrate holder 10 is engaged to prevent the sub-board 1 from coming off. The recess 1d is not necessarily provided in the sub-substrate 1. Since the locking claw 17d is formed obliquely downward, the locking claw 17d can be prevented from coming off by biting it into the end surface of the sub-board 1.
[0022]
【The invention's effect】
As described above, according to the present invention, the substrate holder is fixed to the first substrate by the leg portion, and the side portion of the second substrate to which the support portion is attached and connected to the first substrate by the clamping portion. The second substrate is prevented from being tilted with a simple structure by assisting the self-supporting of the second substrate to the first substrate by locking the second substrate with a locking claw so as not to deviate. It can be supported vertically. In addition, after mounting the second substrate on the first substrate, vibration of the second substrate can be prevented, and peeling or the like due to vibration of a portion electrically connected by soldering can be prevented. And reliability is improved. Furthermore, a simple structure and an inexpensive substrate holder can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of a substrate holder according to the present invention.
FIG. 2 is a side view of the substrate holder of FIG.
3 is a plan view of the substrate holder of FIG. 1. FIG.
4 is a rear view of the substrate holder of FIG. 1. FIG.
FIG. 5 is a front view showing a part of the taping substrate holder in a state where the substrate holder of FIG. 1 is taped on the mount.
6 is a partially cutaway side view of the state in which the substrate holder of FIG. 1 is mounted and fixed to the main substrate. FIG.
7 is an explanatory diagram when the board holder of FIG. 1 is mounted on the main board on which the connector is mounted to support the sub board on which the connector is mounted. FIG.
8 is a perspective view of a state in which a sub board is mounted on the main board shown in FIG.
FIG. 9 is an explanatory diagram when the sub-board shown in FIG. 8 is removed from the main board.
10 is a perspective view when the board holder of FIG. 1 is mounted on a main board on which no connector is mounted to support the sub board, and the sub board and the main board are directly connected. FIG.
FIG. 11 is a perspective view when the board holder of FIG. 1 is mounted on a main board on which no connector is mounted, the sub board is supported, and the sub board and the main board are connected by lead wires.
FIG. 12 is a perspective view showing a case where a sub board is mounted on a conventional main board, and the sub board and the main board are connected by a connector.
FIG. 13 is a perspective view showing a case where a sub board is mounted on a conventional main board, and the sub board is directly connected to the main board.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sub board | substrate 2, 5 Connector 3 Connection terminal 4 Main board 10 Substrate holder 11 Support part 11d Recessed part (engagement part)
12 Leg part 13 Bottom part 15, 16 Clamping part 17 Side part 17d Locking claw 20 Mount 21 Adhesive tape 22 Taping board holder 25-28 Lead wire

Claims (2)

A substrate holder formed by stamping a metal plate material into a predetermined shape by pressing and bending in the plate thickness direction,
A bottom portion that secures a predetermined area and forms a contact portion with the first substrate;
Legs extending from the bottom toward the bottom of the bottom and fixed to the first substrate;
A pair of sandwiching portions extending from one side of the bottom portion toward the upper portion of the bottom portion and provided with an interval corresponding to the thickness of the second substrate standing on the first substrate; ,
A support portion extending from the other side of the bottom portion toward the upper portion of the bottom portion and provided so as to be in contact with an edge portion of the second substrate sandwiched by the pair of sandwiching portions;
Facing the gap formed between the pair of sandwiching portions, the support portion projects from the support portion toward the sandwiching portion, and engages with the edge of the second substrate sandwiched by the pair of sandwiching portions. With locking claws
A substrate holder comprising: 2. The substrate holder according to claim 1, wherein the pair of sandwiching portions are formed with sandwiching pieces that resiliently sandwich the second substrate in the thickness direction at the distal ends thereof.

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