JPH09260873A - Mounting device of printed wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a printed wiring board to be mounted without using setscrews, by a method wherein a sloping surface is provided to an engaing piece so as to be tilted at a predetermined angle with the mounting surface of a mount base turning around from the protrudent ridge of the engaging part, and the center edge of the printed wiring board is made to slide on the sloping surface. SOLUTION: An engaging piece 15 is provided to a mounting surface 3 protruding from it so as to enable the lower edge of a printed wiring board 9 to bear against the engaging piece 15, and the printed wiring board 9 is held by the engaging piece 15 and the tops 13 of seats 12 provided to the mounting surface 3 and fitted into small holes 11 provided to the wiring board 9. The engaging piece 15 is formed like a V shape in cross section so as to be provided with sloping surfaces 16 and 17 tilted at predetermined angles with the mounting surface 3, and the center edge of the printed wiring board 9 is made to bean against the sloping surfaces 16 and 17 to slide on then. By this setup, printed wiring board 9 can be mounted on a mount base without using setscrews.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in workability of easily attaching / detaching a printed wiring board used in electronic equipment or the like to an equipment casing.

[0002]

2. Description of the Related Art A conventional mounting apparatus for a printed wiring board (hereinafter referred to as a printed board) will be described with reference to the drawings. 6 is a front view of the conventional example, and FIG. 7 is a side view of FIG. The printed circuit board 1 in which a large number of semiconductor or integrated circuit chip components (not shown) are arranged and mounted on a plane and a copper foil pattern (not shown) is provided between these components is After connecting a lead-out electric wire (not shown), each corner portion of the printed board 1 is detachably attached to a seat 4 provided on a mounting surface 3 such as a housing of a device with a set screw 2.

The seat 4 is provided between the back surface of the printed circuit board 1 and the mounting surface 3 as a gap for allowing a lead wire (not shown) to pass therethrough, and a top surface of the seat 4 is provided. Align the hole for the set screw 2 of the printed circuit board 1 with the prepared hole (not shown), and screw the set screw 2 such as a tapping screw while pressing and tightening the printed circuit board 1 to the seat 4. Fixing is done.

When a circuit having a new function is added to the printed circuit board 1 or an already added circuit is changed and replaced with a printed circuit board 5 of another circuit, this printed circuit board 1 is used. 5 are connected by a connector 6 having a pair of pin jacks (not shown) to add or replace necessary circuits. Then, each corner of the added or replaced printed circuit board 5 is seated with a setscrew 7.
Attach and fix to.

[0005]

However, this type of conventional technique has the following problems. Generally, the printed circuit board is made of resin such as glass epoxy and is weak in strength.Therefore, if the tightening force of the set screw is too strong, the printed circuit board may be distorted or cracked. It will not be able to tighten firmly. Therefore, there is a risk that the set screw will loosen due to factors such as vibration and shock, and the printed circuit board will fall off.

Further, since the printed circuit board 1 is rarely removed once it is once attached to the seat 4 provided on the mounting surface 3, means for preventing the set screw 2 from loosening by using an adhesive or the like. However, in the case of the printed circuit board 5, since it is intended to be detached and attached and additionally used for replacement, the set screw 7 is often loosened or re-tightened. Since such a set screw is generally a thin screw, when the seat 8 provided on the mounting surface 3 is an aluminum material or a resin molding material, the female screw of the seat 8 is often re-tightened by re-tightening the screw. If the screw threads of crushed, the tightening strength becomes even less expected.

Therefore, the mounting seat 8 is replaced with a hollow cylinder (not shown), the screw and the nut are combined, and the screw is passed through the front surface of the printed circuit board and assembled from the rear surface of the mounting surface 3 with the nut. Although a method of avoiding crushing is taken, normally, the work of adding or replacing the printed circuit board 5 is often performed with the mounting surface thereof standing upright, while preventing fine screws and nuts from falling to the ground. The installation / removal work of was not very troublesome and was extremely inefficient. Therefore, an object of the present invention is to provide a printed circuit board mounting device which can mount the printed circuit board 5 without using a set screw, can be easily removed, and is excellent in operability. It is in

[0008]

The present invention has been made in view of the above points, and is configured as follows. That is, a mounting surface that is a part of the housing of the device,
A seat protruding from this mounting surface and a locking portion are integrally molded to form a mounting portion of the printed circuit board, and each corner is attached to the seat with a set screw, and another printed circuit board is flattened. In a mounting device for a printed circuit board, which is installed side by side and is connected by a pair of connectors, and which is supported by a seat and a locking portion that are projected on the mounting surface,

Another printed circuit board is elastically contacted with the back surface of the corner of the board edge on the side connected by the connector so as to cover the top of the seat protruding from the mounting portion, and the board on the opposite side. Small holes provided at the corners of the edge are inserted into a cylindrical seat having a slot on the top protruding from the mounting part at the corresponding position to form an engaging part, and the center of the board edge part The mounting portion at a position abutting and facing the mounting portion is provided with a locking portion projecting in a wall shape, and the wall portion of the locking portion is bent by abutting the printed circuit board edge portion with the locking portion, and by the restoring force thereof. The printed circuit board is clamped by an engaging portion in which a cylindrical seat is inserted and inserted in the small hole, and a ridge protruding toward the printed circuit board side is provided at the top of this locking portion, at a predetermined angle from the upper end of the wall. Inclining away from the wall to the protruding ridge facing the mounting surface, reversing from the protruding ridge and approaching the wall at a specified angle Tilts down to the wall surface facing the wearing surface, an inclined surface is provided, the inclined surface edge of the printed circuit board is characterized in that so as to slide in contact.

By the solving means, the following operational effects can be obtained. That is, the backside of the corners of the printed circuit board is elastically contacted with the seat, and vibrations and shocks are absorbed by this elastically contacted part to prevent mutual rattling, and the functions of the engaging part and the sandwiching part described above. Is stable, and the insertion portion of the small hole and the cylindrical seat having the slit works as a frictional force on the wall surface of the small hole because the restoring force that the slit expands outwardly acts from the seat. Prevent it from rising.

Further, since the printed circuit board is brought into contact with the locking portion, the locking portion is bent and the restoring force is applied to the fitting engagement portion between the small hole and the columnar seat to fix the printed circuit board. The elastic portion is sandwiched between the engaging portion and the engaging portion, and since the edge portion of the printed circuit board and the engaging portion are elastically contacted with each other, vibrations and shocks are absorbed by the elastically contacting portion, so that they collide with each other. They are not separated from each other and prevent the printed circuit board from slipping out of the mounting portion due to the frictional force between the elastic contact portions.

Then, two inclined surfaces are provided on the top of the engaging portion with the projecting ridge as a boundary, and when the printed board is pressed toward the mounting portion, the edge of the printed board is inclined from the upper end of the engaging wall. Slide down, push the wall of the locking part and spread it over the protruding ridge, and abut on the wall surface of the locking part.On the contrary, when the printed circuit board is separated from the mounting part, the edge of the printed circuit board Rubbing up the sloped surface from the wall surface and pushing the wall of the locking part to spread it over the protruding ridge disengages it, so the printed circuit board can be attached without using a set screw. It is convenient to attach and detach when exchanging.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention. As in the conventional case, the printed circuit board 1 has its corners fixed to the top surface of a seat 4 projecting from a mounting surface 3 which is a part of the housing of the device. It is attached with screws 2. Then, the additional printed circuit boards 9 are arranged side by side on a plane, and the adjacent printed circuit boards 9 are electrically connected to each other by a connector 6 having a pair of pin jacks (not shown). One side 6A of the connector 6 is fixed to the lower edge portion of the printed board 1 near the right end.

FIG. 2 shows an additional printed circuit board 9,
(A) is a front view and (B) is a side view. The approximate dimensions of the printed circuit board 9 of this embodiment shown in FIG.
About 150 mm and 1.6 mm thick, the other 6B of the connector corresponding to one side 6A of the connector 6 is fixed near the right end of the upper edge, and small holes 11 with a diameter of 3 mm are provided at the corners of the lower edge. There is.

FIG. 3 is a partial view of a portion where the printed circuit board 9 of FIG. 2 is mounted, (A) is a front view and (B) is a side view. The seat 10 shown in FIG. 3 is formed by projecting a cylinder having a diameter and a height of about 8 mm from the mounting surface 3, and a portion where the back surface of the upper side corner portion of the printed circuit board 9 is elastically contacted so as to cover the top surface. The seat 12 has a large-diameter cylinder 12 having a diameter and a height of about 8 mm protruding from the mounting surface 3, and a small-diameter cylinder 13 having a diameter and a height of 3 mm at the top of the cylinder 12. Further, a groove-like slot 14 having a width of 1 mm and a depth of 3 mm is provided on the diameter so as to be parallel to the lower side of each single-line printed circuit board 9. The cylindrical portion 13 is a portion which is fitted into and engaged with the small holes 11 at the corners of the lower side of the printer board 9.

Further, a locking portion 15 is projected from the mounting surface 3 at a position where the central portion of the lower edge of the printed circuit board 9 abuts, and the printed circuit board 9 is fixed to the locking portion 15 and the small hole 11. It is configured to be sandwiched by the fitting and engaging portion between the seat and the top portion 13 of the seat 12. With such a configuration, the printed circuit board 9 can be attached or replaced without loosening or re-tightening the set screw as in the conventional case.

Here, the locking portion 15 which is the main part of the present invention,
The total height from the mounting surface 3 is 15mm, width 20mm, thickness 2mm,
A wall shape parallel to the lower edge of the printed board 9 is formed, and inclined surfaces 16 and 17 having a V-shaped cross section are formed at the top of this wall in the thickness direction of the wall, and the joint portion of the inclined surfaces is formed. The ridgeline of is convex on the side where the printed circuit board 9 is attached, and
It is a protruding edge of about mm. The inclination of each of the inclined surfaces 16 and 17 is about 30 degrees with respect to the mounting surface 3.

Then, as described above, the small hole of the printed circuit board 9
The printed circuit board 9 is sandwiched by the engaging and engaging portions of the seat 11 and the top cylinder 13 of the seat 12, and the lower edge portion of the printed circuit board 9 is It contacts the wall surface corresponding to the root of the inclined surface 17, and the wall surface of the locking portion 15 is elastically deformed and bent so as to be expanded by the printed circuit board 9, and the position of the bending amount is about 2 mm. It is integrally molded so that there is a joint surface between the wall of the stopper 15 and the mounting surface 3. The mounting surface 3, the seat 4, the seats 10, 12, etc., and the locking portion 15 are defined as plastics that can replace metal. It is called an engineering plastic and is integrally molded of synthetic resin and constitutes a mounting portion of the printed circuit boards 1 and 9.

FIG. 4 is a cross-sectional view for explaining the steps of attaching and detaching the printed circuit board 9 according to the embodiment of the present invention, which is taken along the plane perpendicular to the mounting surface 3 passing through the centers of the seats 10 and 12 in FIG. It is a side surface partial view at the time of cutting. The process of attaching and detaching the printed circuit board 9 to and from the mounting portion will be described below. In FIG. 4A, the connector 6 of the printed circuit board 9
B is grasped and operated so that it can be freely inserted into and removed from the connector 6B of the printed circuit board 1 which has already been mounted, or just before being connected to each other, or immediately after disconnection, the edge of the printed circuit board 9 The back of the corner of the edge is on the top of the seat 10,
At the same time, the back surface of the central portion of the lower edge portion is placed on the top of the locking portion 15 so as to be pressed respectively.

In FIG. 4 (B), the connector 6B of the printed board 9 and the connector 6A of the printer board 1 are about to be connected, and then the pin jack group of the connector 6 is box-shaped to be surrounded by resin molding. By fitting a nesting insertion portion (not shown) made of a material, the pin jack is contact-coupled and electrically connected, and the printed board is mounted on the top surface of the seat 10 protruding from the mounting surface 3. Although the back surface of the corner of the upper edge of 9 comes into contact with and is bridged,
The height of the seat 10 and the connector 6B in the height direction is set so that the connector 6B can be inserted and removed tightly.
The height of the seat 10, which is the size protruding from the mounting surface 3 of the connector, is designed to be about 1 to 2 mm higher, or conversely, the connector 6B
The height of the connector 6A corresponding to the above is selected to be low, that is, the mounting height of the printed circuit board 1 is selected to be lower than the mounting height of the printed circuit board 9 by 1-2 mm, and the upper edge of the printed circuit board 9 is attached to the top of the seat 10. By holding the back surfaces of the corners of the parts in elastic contact with each other, frictional forces are exerted on each other to prevent the connector 6B from coming off, and vibration and shock are absorbed by the elastic contact parts to prevent mutual mutual contact. Prevent backlash.

On the other hand, the back surface of the central portion of the lower edge of the printed circuit board 9 is placed on the inclined surface 16 of the locking portion 15,
When the surface of the printed circuit board 9 in this portion is pressed toward the mounting surface 3, the back surface of the lower edge of the printed circuit board 9 slides through the inclined surface 16, and at the same time, the wall of the locking portion 15 is elastically deformed and bent. The walls are expanded and the lower edge of the printed circuit board 9 easily approaches the mounting surface 3.

Here, the reason why the cross sections of the inclined surfaces 16 and 17 are V-shaped is as follows. In other words, when the back surface of the printed circuit board 9 hits the inclined surface 16 evenly and does not contact evenly because the back surface of the printed circuit board 9 is tilted slightly to the left and right, the printed circuit boards 9 contact each other when they are further pressed. The inclined surface 16 of the part is locally deformed or a part of the inclined surface 17 is distorted and elastically deformed. As a result, the back surface of the printed circuit board 9 comes into contact with the inclined surface 16 more uniformly.
The pressing force of the printed circuit board 9 acts on the inclined surfaces 16 and 17 without being extremely biased, and at the same time, the back surface of the printed circuit board 9 slides down the inclined surface 16 while pushing the wall portion of the locking portion 15 to elastically deform it. This is to encourage

In FIG. 4 (C), the inclined surface 1 of the engaging portion 15 is in the process of attaching or detaching the printed circuit board 9.
When the ridges of the joints 6 and 17 and the thickness of the lower edge of the printed circuit board 9 come into contact with each other, the elastic deformation of the wall of the locking portion 15 reaches the maximum, and the amount of bending is 4 to 5 mm. The force also becomes maximum and the printed circuit board 9 is pressed and held. This holding force serves as a design guide for whether or not the printed circuit board 9 gets out of the mounting portion by overcoming the locking portion 15 by impact, and the printed board 9 according to the embodiment of the present invention weighs less than 100 grams. It does not exceed the holding force even if it receives a considerable impact acceleration,
Therefore, the present embodiment is sufficiently practical. At this time, the slit 14 of the cylinder 13 provided at the top of the seat 12 corresponding to this position is compressed into the small hole 11 at the corner of the lower edge of the printed circuit board 9 and is pressed into place while deforming. Also becomes.

In FIG. 4 (D), the printed board 9 is in a mounted state, and the restoring force of the slit 14 to expand outward acts on the wall surface of the small hole 11, and the outer surface of the cylinder 13 and the small hole 11 are separated. It acts as a frictional force on the inner wall and prevents the corners of the lower edge of the printed circuit board 9 from rising from the seat 12. Further, as described above, the central portion of the lower edge of the printed circuit board 9 is in contact with the wall surface which is the root portion of the inclined surface 17 having the V-shaped cross section of the locking portion 15, and the wall of the locking portion 15 is abutted. Since the part is elastically deformed and bent by about 2 mm, the restoring force constantly presses the printed circuit board 9, and this pressing force corresponds to the small hole 11 of the printed circuit board 9 and the top cylinder 13 of the seat 12. The printed circuit board 9 maintains the state in which it is attached to the mounting portion by acting on the fitting / engaging portion. Since the wall portion of the locking portion 15 is elastically deformed and is elastically contacted with the lower edge portion of the printed circuit board 9, the elastic contact portion absorbs vibration and shock, and as a result, The printed circuit board 9 is prevented from slipping out of the mounting portion.

When the printed circuit board 9 is to be removed from the mounting part, such as for replacement, it is lifted from the back surface of the corner of the lower edge to resist frictional engagement between the small holes 11 and the wall surface of the columnar part 13, and the mounting surface. 3 at the same time, the central part of the lower edge of the printed circuit board 9 slides on the inclined surface 17 of the engaging part 15 and pushes the wall part apart at the same time. As shown in (C), the joining ridge lines of the inclined surfaces 16 and 17 of the locking portion 15 and the lower edge portion of the printed circuit board 9 are brought into contact with each other, and at the same time, from the small holes 11 at the corners of the lower side of the printed circuit board 9 to this. Cylinder 13 at the top of the corresponding seat 12
Begins to come off. Next, as described above, as shown in FIG. 4B, the engagement between the engagement portion 15 and the lower edge portion of the printed circuit board 9 and the engagement between the small hole 11 and the column 13 are released. Further, FIG.
As shown in (A), one side 6B of the connector is grasped and pulled out from the other side 6A of the connector, so that a box-shaped nesting insertion portion of the connector 6 (not shown) is fitted and a pair of pin backs (not shown) are formed. The printed circuit board 9 can be easily detached from the mounting portion by simultaneously releasing the contact coupling of the.

FIG. 5 shows another embodiment of the present invention, which is a cross-sectional view for explaining the steps of attaching and detaching the printed circuit board 9, which is similar to FIG. The parts marked with are the same parts described in FIG. 4, and have the same functions and functions. 4 and FIG. 5 is different from FIG. 4 in that instead of the locking portion 15 in FIG.
Which is different from the locking portion 15 shown in FIG. 4 only in that it is provided with inclined surfaces 19 and 20 whose cross section is a substantially triangular shape in the thickness direction of the wall portion at the top thereof. Then, by providing rigidity to the joint between the inclined surfaces 19 and 20 of the locking portion 18 and the wall shown in FIG. 5, the joint with the wall can be formed by frequent replacement of the printed circuit board 9 as described later. It is designed to withstand the problems that occur.

That is, as shown in FIGS. 4B and 4C, when the central surface of the lower edge of the printed circuit board 9 is pressed toward the mounting surface 3, the rear surface of the printed circuit board 9 in this part is pressed. Slides down the inclined surface 16, but at this time, the V-shaped cross section collapses in the direction perpendicular to the mounting surface 3, and further joins the inclined surfaces 16 and 17 and the wall portion. Is subjected to stress concentration by being pushed and spread horizontally on the mounting surface 3 by the lower edge portion of the printed circuit board 9, but there is no problem if the number of times of replacement of the printed circuit board 9 is within an allowable limit (several tens of times). .

However, the replacement of the printed circuit board 9 is extremely frequent due to the operation confirmation test of a large number of the printed circuit boards 9, and when the allowable limit is exceeded, the joint between the inclined surfaces 16 and 17 and the wall is stressed. Fatigue may occur due to concentration, and eventually a tear may occur at this portion. To prevent this, the inclined surfaces 19 and 20 of the locking portion 18 as shown in FIG. By eliminating the factor that the inclined surfaces 16 and 17 having a V-shaped cross section are crushed and stress concentration is caused at the joint portion with the wall as described above, the rigidity of the joint portion is increased. Then, in FIGS. 5B and 5C, when the central surface of the lower edge of the printed circuit board 9 is pushed toward the mounting surface 3, the rear surface of the printed circuit board 9 in this part slides down the inclined surface 19, At the same time, the wall of the locking portion 18 is elastically deformed and flexed without locally receiving stress concentration, and the wall portion is expanded and the lower edge portion of the printed board 9 easily approaches the mounting surface 3.

5 (A) and 5 (D) are shown in FIG.
It is a figure explaining the process similar to the matter demonstrated in (D), and replaces with the engaging part 15 shown in FIGS. Although the only difference is that the locking portion 18 shown in FIG. 4 is provided, it is the same as the function and action in the process described in FIGS. 4A and 4D in the embodiment of the present invention described above.

[0030]

As described above, the present invention has the following effects. The mounting surface, which is a part of the housing of the equipment, and the printed circuit board mounting part, which is composed of a seat and a locking part projecting from the mounting surface, are integrally molded with synthetic resin to mount the printed circuit board. Before installing the connector, first make the dimension between the connector insertion / extraction position and the top of the cylindrical seat smaller than the dimension between the insertion / extraction position of the connector fixed to the printed circuit board and the back surface of the printer substrate. Since the connector is tightly connected, the back surface of the printed circuit board is pressed against the cylindrical seat, and as a result, the back surface of the corner of the upper edge of the printed circuit board is placed on top of the cylindrical seat. By elastically contacting each other and absorbing vibrations and shocks at the elastically contacting portion, mutual rattling can be prevented, and the functions of the engaging portion and the sandwiching portion described above can be stabilized.

Next, small holes are provided at the corners of the lower edge of the printed circuit board, and a cylindrical seat having a slot at the top is provided at a position corresponding to the small hole so as to project from the mounting surface. , If a cylinder is inserted and engaged in these small holes, the restoring force by which the slit expands acts as a frictional force between the cylindrical side surface of the seat and the small hole wall surface, and the corners of the lower edge of the printed circuit board You can prevent it from rising from the seat. Further, a locking portion is provided so as to project from the mounting surface at a position where it abuts on the central portion of the lower edge of the printed circuit board, and when the substrate abuts the locking portion, the wall of the locking portion bends, and this restoring force Acts as a pressing force on the board and acts on the fitting insertion engaging portion between the small hole and the cylindrical seat having the slit, so that the printed insertion board is clamped by the fitting insertion engaging portion and the locking portion. By doing so, the mounted state of the printed circuit board can be maintained.

In this case, since the wall of the engaging portion is elastically deformed and elastically contacts the printed circuit board, vibrations and shocks are absorbed by this elastic contacting portion, so that they are not separated from each other and the elastically contacting portion does not occur. The printed circuit board is prevented from slipping out of the mounting part due to mutual frictional force. In addition, two sloped surfaces with a V-shaped cross section are formed at the top of the locking portion in the thickness direction of the wall, and the joint portion of both sloped surfaces forms a ridge protruding toward the printed circuit board. Therefore, when mounting the printed circuit board, press the lower surface of the printed circuit board toward the mounting surface, and the back edge of this part will form the upper sloped surface of the cross section of the locking part. You can slide down to get over the protruding ridge and mount it on the mounting part. Also, when removing the printed circuit board,
If you lift both corners of the bottom side of the printed circuit board and pull them away from the mounting surface, the surface edge of the printed circuit board will rub against the lower inclined surface of the cross section of the locking part, and climb over the protruding ridge. Can be disengaged, the printed circuit board can be attached without using a conventional set screw, it can be easily removed without any trouble, and no tools such as a driver are required. Has the effect of dramatically improving the workability of.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

2A and 2B show a printed circuit board according to an embodiment of the present invention, FIG. 2A is a front view and FIG. 2B is a side view.

3 is a partial view of a portion where the printed circuit board of FIG. 2 is mounted, (A) is a front view, and (B) is a side view.

FIG. 4 is a process drawing of mounting a printed circuit board according to an embodiment of the present invention.

FIG. 5 is a process drawing showing another embodiment of the present invention.

FIG. 6 is a front view showing a conventional example.

FIG. 7 is a side view of FIG. 6;

[Explanation of symbols]

 1 printed circuit board 2 set screw 3 mounting surface 4 seat 5 printed circuit board 6 connector 6A connector one side 6B connector other 7 set screw 8 seat 9 printed circuit board 10 seat 11 small hole 12 seat 13 cylinder 14 slot 15 locking part 16 inclined surface 17 Inclined surface 18 Locking part 19 Inclined surface 20 Inclined surface

Claims (1)

[Claims] 1. A printed wiring board having corners attached to the seats with setscrews, another printed wiring board placed on a flat surface and connected with a pair of connectors, and is also engaged with a seat protruding from the mounting surface. In a mounting device for a printed wiring board that is supported by a part, cover the top of the seat protruding from the mounting part with the back surface of the corner of the board edge of the other printed wiring board that is connected with the connector. The small hole provided on the opposite side of the board edge to the cylindrical seat having a slot on the top protruding from the mounting portion at a position corresponding to this, to form an engaging portion. Further, a locking portion projecting in a wall shape is provided on the mounting portion at a position abutting and facing the central portion of the board edge portion, and the printed wiring board edge portion is brought into contact with the locking portion so that the locking portion wall The part is bent, and by the restoring force, the cylindrical seat is inserted into the small hole, and the engaging part is formed. The printed wiring board is sandwiched, and the wall of this locking part has a ridge protruding toward the printed wiring board side. An inclined surface is provided which is inverted from the ridge and inclined toward the wall surface toward the mounting surface at a predetermined angle in the direction of approaching the wall surface, and the edge portion of the central portion of the printed wiring board abuts on this inclined surface so that the wall surface slides. A printed wiring board mounting device characterized by the above.