JPH06218453A - Structure for attaching metal fitting - Google Patents

Abstract

PURPOSE:To provide a structure, for attaching a fitting, which unnecessitates the inverting operation of a member to be retained at the time of attaching the member to be retained and the fitting in an electric apparatus. CONSTITUTION:A hole 1a in the shape like a wood spoon is provided on a printed board 1, and a first projecting piece 3 is provided on a fitting 2 through a bend facilitating part 2a. This first projecting piece is provided with an inserting part 3a having a straight line part 3b and a notched part 3c. When the inserting part 3a of the fitting 2 is inserted in the hole 1a of the printed board 1 and a flat part 3d is twisted in the direction of the arrow R, the first projecting piece 3 is bent by the facilitating part 2a and the printed board 1 is fitted in the notched part 3c. Thus, by the retaining operation from the fitting 2 side, the fitting 2 is attached to the printed board 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a locked member and a metal fitting in an electric device, and more particularly to a mounting structure for a metal fitting capable of locking the locked member from a surface on which the metal fitting is mounted.

[0002]

2. Description of the Related Art Conventionally, a structure shown in FIGS. 10 and 11 has been provided as a structure for mounting metal fittings on a printed circuit board.

FIG. 10 is an exploded perspective view showing a conventional mounting structure of a printed circuit board and a metal fitting, and FIG. 11 is a perspective view of the mounting structure seen from below.

The conventional structure for attaching the metal fitting 22 to the printed circuit board 21 is that the square hole 21a provided in the printed circuit board 21 is
Notch 2 having a notch width substantially the same as the thickness of the printed circuit board 21
The printed circuit board 21 is inverted by inserting the engaging piece 22a having 2b, and the tip of the engaging piece 22a is bent using a jig as shown in FIG. The engaging piece 22a of the metal fitting 22 was engaged.

[0005]

However, in the above-mentioned conventional structure for mounting a metal fitting on a printed circuit board, after inserting an engaging piece of the metal fitting into a square hole of the printed circuit board, the printed circuit board is inverted to engage the metal fitting. Since the tip of the joint piece was bent, the number of man-hours was increased.

Further, since the above steps are involved, it is difficult to assemble the products by the top stacking method, which makes automatic assembly difficult.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example, and to reverse the locked member when attaching the locked member and the metal fitting. There is no need to provide a mounting structure for metal fittings.

[0008]

SUMMARY OF THE INVENTION The metal fitting mounting structure of the present invention includes a locked member having an insertion hole, an easily bendable portion having a small cross-sectional area provided in the metal fitting, and a bendable portion interposed therebetween. A first protrusion having an insertion portion provided with a V-shaped notch, and the insertion portion of the first protrusion provided on the metal fitting is inserted into the hole of the locked member to bend the metal fitting. By bending the easy portion, the metal fitting and the locked member are configured to engage with each other.

In addition, in the mounting structure of the metal fitting, instead of the first projection piece of the metal fitting, the first projection piece is provided with a second projection piece or a square hole provided with an upward bending portion for facilitating the use of the tool. The third projection is provided. Further, in the fitting structure of the fitting, the locked member having an insertion hole and the fourth projecting piece provided on the fitting with an H-shaped lower portion having a hook for engaging with the hole are provided. By inserting the hook of the fourth projecting piece provided on the metal fitting into the hole of the stop member and pressing the upper portion of the H-shaped portion of the fourth projecting piece inward, the metal fitting and the engaged member are separated from each other. Are configured to engage with each other.

Further, in the mounting structure of the metal fitting, a fitting member and a fitting having a deformed hole in which a part of the square hole is enlarged in the width direction and a fitting, and a segment having notches on both sides are provided. The deformable hole of the locking member and the deformable hole of the metal fitting are opposed to each other, and the sections are inserted into both of the deformable holes and twisted by 90 degrees to attach the locked member and the metal fitting. It is a thing.

[0011]

According to the present invention, as shown in FIG. 1, the metal fitting is provided with the first projecting piece through the easy bending portion which has a small cross-sectional area and can be easily bent. Since the V-shaped hole is provided, the engaging piece of the first projecting piece is inserted into the V-shaped hole, and the first projecting piece is bent at the easy-bending portion. The straight part of the engaging piece fits into the protrusion,
Since the locked member fits into the notch of the engaging piece, the locked member and the metal fitting can be attached.

Further, as shown in FIGS. 4 and 5, since the second projecting piece having the upward bending portion or the third projecting piece having the upward square hole is provided on the upper portion of the projecting piece of the metal fitting. Second
It becomes easy to grip the bent portion of the projecting piece with a tool and to fit the tip of the tool into the square hole of the third projecting piece, which facilitates the bending work of the easy-bending portion.

Further, as shown in FIG. 6, the metal fitting is provided with an H-shaped fourth projecting piece, and the lower part of the H-shaped portion is provided with both left and right hooks which project downward and face outward. The hooks are opened by inserting the parts into the holes of the locked member and pressing the both upper ends from the outside with a tool or the like to open the holes of the locked member and the fourth protrusion of the metal fitting. Engage.

Further, as shown in FIGS. 7 and 8, a deformed hole in which a part of the square hole is enlarged in the width direction is provided in both the locked member and the metal fitting, and the deformed hole is fitted in the deformed hole. Since the segment having the notches on both sides is provided, the deformed hole of the locked member and the deformed hole of the metal fitting are overlapped with each other, and the segments are inserted into both the deformed holes and twisted by 90 degrees. The printed board and the metal fitting are engaged with both of the cutouts, so that the locked member and the metal fitting can be attached.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fitting mounting structure according to the present invention will be described with reference to FIGS.

The present embodiment is one of the mounting structures of the locked member and the metal fitting, in which the metal fitting is mounted on the printed circuit board.

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention. FIG. 2 is a plan view showing a V-shaped hole provided in the printed circuit board in the first embodiment. Figure 3 (A)
(B) is a plan view showing another hole shape of the printed circuit board in the first embodiment. FIG. 4 is an exploded perspective view showing the second embodiment. FIG. 5 is an exploded perspective view showing the third embodiment. FIG. 6 is an exploded perspective view showing the fourth embodiment. FIG. 7 is a perspective view showing the fifth embodiment. FIG. 8 is an exploded perspective view showing the fifth embodiment. 9A and 9B are plan views showing other hole shapes of the printed circuit board and the metal fitting in the fifth embodiment.

In the first embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes a printed circuit board, which is provided with a C-shaped hole 1a having a protrusion 1b. W1 is the width (dimension) of the square hole portion of the hole 1a and has a predetermined clearance with respect to the plate thickness of the metal fitting 2.

Numeral 2 is a metal fitting to be attached to the printed circuit board 1, which is provided at its lower end with a bendable portion 2a which has a hole 2b and both notched portions 2c from above and below to reduce the cross-sectional area and facilitate bending in the arrow R direction. The first projecting piece 3 is provided via the bendable portion 2a.

Reference numeral 3 is a first projecting piece, which is provided with an insertion portion 3a which projects downward and is inserted into the hole 1a, a substantially U-shaped cut portion 3c in which the entrance is inclined and widened, and a flat surface portion 3e. . Reference numeral 3b is a linear portion of the engaging piece 3a, and 3d is a bottom portion of the cut portion 3c.

Reference numeral 1c shown in FIGS. 3A and 3B shows another shape of the hole 1a, which is a deformed hole obtained by deforming a square hole.
1d shows another shape of the hole 1a, which is a square hole having a width (dimension) W2 slightly larger than the width W1.

In the mounting structure of the printed circuit board and the metal fitting in the first embodiment configured as described above, the printed circuit board 1
When the metal fitting 2 is mounted on the metal fitting 2, the insertion portion 3a of the first projecting piece 3 provided on the metal fitting 2 is inserted into the hole 1a of the printed board 1 to a predetermined position as shown in FIG.

Next, the flat surface portion 3e of the first projecting piece 3 is twisted in the direction of arrow R using a tool (not shown). At this time, the first
The protruding piece 3 is bent by the easy-to-bend portion 2a, and the straight portion 3b of the insertion portion 3a is fitted into the protruding portion 1b of the hole 1a, and the cut portion 3 is formed.
Part of the peripheral portion of the hole 1a of the printed board 1 fits into the bottom portion 3d of c.

As a result, the metal fitting 2 is locked to the printed circuit board 1 without play.

Thus, the metal fitting 2 can be attached to the printed circuit board 1 by the locking operation from the metal fitting 2 side.

In the first embodiment described above, the holes of the printed circuit board 1 are the C-shaped holes 1a, but the present invention is not limited to this, and FIG.
The deformed hole 1c or the square hole 1d shown in (B) may be used.

In the second embodiment shown in FIG. 4, 4 is the second
It is a projecting piece, and like the first projecting piece 3, the bendable portion 2a
It is provided at the lower end of the metal fitting 2 via (not shown), and is provided with an insertion portion 3a protruding downward and inserted into the hole 1a, a notch portion 3c, and an upward bending portion 4a.

In the mounting structure of the printed circuit board and the metal fitting in the second embodiment configured as described above, the printed circuit board 1
When the metal fitting 2 is attached to, the insertion portion 3a of the second projecting piece 4 provided on the metal fitting 2 is inserted to a predetermined position in the hole 1a of the printed board 1 as shown in FIG.

Next, the bending portion 4a of the second projecting piece 4 is twisted in the direction of arrow R using a tool (not shown). At this time, the second
The projecting piece 4 is bent at the easy-to-bend portion 2a in exactly the same manner as in the first embodiment, and the straight portion 3b of the inserting portion 3a has the protruding portion 1 of the hole 1a.
Part of the peripheral portion of the hole 1a of the printed board 1 fits in the bottom portion 3d of the cut portion 3c.

As a result, the metal fitting 2 is locked to the printed board 1.

As described above, by grasping the bent portion 4a with the tool, the metal fitting 2 can be easily attached to the printed circuit board 1 by the locking operation from the metal fitting 2 side.

In the third embodiment shown in FIG. 5, 5 is the third
It is a projecting piece, and like the first projecting piece 3, the bendable portion 2a
It is provided at the lower end portion of the metal fitting 2 via (not shown), and is provided with an upwardly projecting square hole 5b provided in the insertion portion 3a protruding downward and inserted into the hole 1a, the cut portion 3c, and the bent portion 5a. There is. 6 is a tool for twisting the third projecting piece 5.

In the mounting structure of the printed circuit board and the metal fitting in the third embodiment configured as described above, the printed circuit board 1
When the metal fitting 2 is attached to, the engaging piece 3a of the third projecting piece 5 provided on the metal fitting 2 is inserted into the hole 1a of the printed board 1 to a predetermined position as shown in FIG.

Next, the tool 6 is inserted into the square hole 5b of the third projecting piece 5 and twisted in the arrow R direction. At this time, the third projecting piece 5 is bent at the easy-to-bend portion 2a in exactly the same manner as in the first embodiment, the straight portion 3b of the inserting portion 3a is fitted into the protruding portion 1b of the hole 1a, and the bottom portion of the notch portion 3c is formed. 3d has a hole 1a in the printed circuit board 1
A part of the peripheral part fits in.

As a result, the metal fitting 2 is locked to the printed board 1.

As described above, by inserting the tool 6 into the square hole 5b and twisting it, the metal fitting 2 can be easily attached to the printed circuit board 1 by a locking operation from the metal fitting 2 side.

In the fourth embodiment shown in FIG. 6, 1e is a square hole provided on the printed circuit board 1. Reference numeral 7 denotes an H-shaped fourth projecting piece, which is provided in a direction orthogonal to the metal fitting 2 and has a lower portion of the H-shaped portion projecting downward of the metal fitting 2 and both left and right hooks 7a facing outward, and an upper portion having both hooks 7a. It has an upper end 7b.

In the mounting structure of the printed circuit board and the metal fitting in the fourth embodiment configured as described above, the printed circuit board 1
When the metal fitting 2 is attached to, the both hooks 7a of the fourth projecting piece 7 provided on the metal fitting 2 are inserted into the holes 1e of the printed circuit board 1 to predetermined positions as shown in FIG.

Next, when a tool (not shown) is used to press both upper end portions 7b of the fourth projecting piece 7 from the outside to the inside, both hooks 7a are opened, and the square hole 1e of the printed board 1 and the metal fitting. The second fourth projecting piece 7 engages without play.

As described above, by pressing the both upper ends 7b of the H shape from both sides with the tool, the metal fitting 2 can be easily attached to the printed board 1 from the metal fitting 2 side.

In the fifth embodiment shown in FIGS. 7 to 9,
Reference numeral 1f is a deformed hole obtained by enlarging a part of the square hole in an arc shape in the width direction, and is provided on the printed circuit board 1.

Denoted at 8 is a projecting piece, which is provided so as to project on the side surface of the metal fitting 2 and has a deformation hole 8a having the same shape as the deformation hole 1f.

Reference numeral 9 is a section, which has notches 9a with wide entrances on both left and right sides, and is shaped to be inserted into the deformation holes 1f and 8a. 9b is the bottom of the notch 9a.

In FIGS. 9A and 9B, 1g is a deformed hole obtained by enlarging one end of the square hole in the width direction, which is provided in the printed board 1 and the metal fitting 2. Denoted at 1h is a deformed hole in which a part of the square hole is enlarged in only one side in the width direction, and is provided in the printed board 1 and the metal fitting 2.

In the mounting structure of the printed circuit board and the metal fitting in the fifth embodiment configured as described above, the printed circuit board 1
When mounting the metal fitting 2 on the metal fitting 2, as shown in FIGS. 7 and 8, the deformation hole 1f of the printed circuit board 1 and the deformation hole 8a provided on the projecting piece 8 of the metal fitting 2 are overlapped with each other so as to face each other.
Insert the section 9 into f and 8a.

Next, when the section 9 is twisted by 90 degrees with a tool (not shown), the bottom portions 9b of both cut portions 9a of the section 9 are twisted.
Then, the peripheral portions of the width direction enlarged portions provided in both the deformation holes 1f and 8a of the printed board 1 and the metal fitting 2 are fitted.

As a result, the metal fitting 2 is locked to the printed circuit board 1 without play.

In this way, the metal fitting 2 can be attached to the printed circuit board 1 by the locking work from the metal fitting 2 side using the separate piece 9 of the metal fitting.

In the fifth embodiment, the holes of the printed circuit board 1 and the metal fitting 2 are the deformed holes 1f, but the holes are not limited to this.
The deformation holes 1g and 1h shown in (A) and (B) may be used.

Although the metal fitting 2 is attached to the printed circuit board 1 in the first to fifth embodiments, the present invention is not limited to this, and is also applicable to mounting metal fittings and metal fittings or mounting printed circuit boards to metal fittings. it can.

[0051]

Since the metal fitting mounting structure according to the present invention is constructed as described above, the metal fitting side can be engaged with the metal fitting to mount the metal fitting on the printed circuit board. Is eliminated, and the work man-hours can be significantly reduced.

Further, since the products can be assembled by the stacking method, automatic assembly becomes easy.

[0053]

[Brief description of drawings]

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

FIG. 2 is a plan view showing holes of a printed circuit board according to the first embodiment of the present invention.

3 (A) and 3 (B) are plan views showing the hole shape in the first embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a third embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a fourth embodiment of the present invention.

FIG. 7 is a perspective view showing a fifth embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a main part of a fifth embodiment of the present invention.

9 (A) and 9 (B) are plan views showing hole shapes of a printed circuit board and a metal fitting in a fifth embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a mounting structure of a conventional printed board and a metal fitting.

FIG. 11 is a perspective view seen from below showing a mounting structure of a printed circuit board and a metal fitting in a conventional example.

[Explanation of symbols]

 1: Printed circuit board 1a, 2b: Hole 1b: Protruding portion 1c, 1f, 1g, 1h, 8a: Deformation hole 1e, 1d, 5b: Square hole 2: Metal fitting 2a: Easy-to-bend portion 2c, 3c, 9a: Cut portion 3 : First protrusion 3a: Insertion portion 3b: Straight portion 3d: Bottom portion 3e: Flat portion 4: Second protrusion piece 4a: Bent portion 5: Third protrusion piece 7, 8: Projection portion 7a: Hook 7b: Upper end portion 9 : Intercept

Claims (4)

[Claims] 1. A locked member having an insertion hole, a bendable portion having a small cross-sectional area provided on a metal fitting, and an insertion portion provided through the bendable portion and having a U-shaped cut portion. The first protruding piece provided on the metal fitting is inserted into the hole of the locked member, and the easy-to-bend portion of the metal fitting is bent. A fitting mounting structure, characterized in that it is configured to engage with a stop member. 2. A second projecting piece provided with an upward bending portion or a third projecting piece provided with a square hole for facilitating the use of a tool on the first projecting piece instead of the first projecting piece of the metal fitting. The metal fitting mounting structure according to claim 1, further comprising: 3. A locked member having an insertion hole, and a fourth projecting piece, which is provided on the metal fitting and has an H-shaped lower portion with a hook that engages with the hole, The hook of the fourth projecting piece provided on the metal fitting is inserted into the hole, and the upper part of the H-shaped portion of the fourth projecting piece is pressed inward to engage the metal fitting with the locked member. A mounting structure for metal fittings, which is characterized in that 4. A deformed hole for a locked member, comprising: a locked member and a metal fitting, each of which has a deformed hole formed by enlarging a part of a square hole in a width direction, and a segment having cutouts on both sides. And the deformation holes of the metal fitting are opposed to each other, and the segments are inserted into both the deformation holes and twisted by 90 degrees, so that the locked member and the metal fitting are attached to each other. Mounting structure.