JPH0963396A - Structure of pair of upward bent parts of sheet metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a pair of upward bent parts of sheet metal which is hardly deformed even if a thickness of an upward cut part of sheet metal or the like is thin and by which a height of bending parts of connecting parts being reinforcement of the upward cut part can be freely set and a degree of freedom of design can be increased. SOLUTION: A structure is provided with sheet meta 1, a first upward bent part 1b on one side of this sheet metal 1, a second upward bent part 1c on the other side of the sheet metal 1 and a connecting part 1i having in the center a curved part 1j extensible in a straight line shape by tension. In an unfolding condition before bending of these first upward bent part 1b and second upward bent part 1c, a third bending part 1e and a fourth bending part 1g are set in a prescribed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a pair of bent and bent portions of a sheet metal applied to an operating lever of a switch operating mechanism.

[0002]

2. Description of the Related Art In recent years, industrial products are becoming smaller and lighter, and it is becoming important to reduce the size of products using sheet metal. An example of a switch operating mechanism using a conventional sheet metal working technique will be described below with reference to the drawings. FIG. 3A is a plan view of a conventional switch operating mechanism,
FIG.3 (b) shows the same side view. In FIG. 3, 1 is a switch operating lever, 2 is a substrate, 3 and 4 are switches, and 5 is a case. In FIG. 3, the guide groove 1a of the switch operating lever 1 is a shaft 2a provided on the substrate 2.
The switch operating lever 1 is slidable in the range of the guide groove 1a to the left and right along the shaft 2a. When the switch operating lever 1 moves to the right, the left bent portion 1b pushes the actuator 3a of the left switch 3 to operate the switch 3. Also,
When the switch operating lever 1 moves leftward, the right bent portion 1c pushes the actuator 4a of the right switch 4 to operate the switch 4.

[0003]

However, in the conventional structure of the pair of bent portions of the sheet metal as described above, the bent portion 1 for operating the switches 3 and 4 of the switch operating mechanism.
If the thickness of b and 1c is thin, it is easy to deform, and even if a thin switch is used, the thickness of the cut and raised portions 1b and 1c cannot be made thin, so that the thickness of the entire switch operating mechanism cannot be made thin. .

Therefore, in view of the above-mentioned conventional problems, the present invention is difficult to deform even if the thickness of the cut-and-raised portion of the sheet metal or the like is small, and the height of the bent portion of the connecting portion that reinforces the cut-and-raised portion is high. It is an object of the present invention to provide a structure of a pair of bent and bent portions of a sheet metal which can be set freely and can be designed more freely.

[0005]

A structure of a pair of bent and bent portions of a sheet metal according to claim 1 is a sheet metal and a first bent portion which is bent substantially vertically to one side of the sheet metal via a first bending portion. One bent-up portion, a second bent-up portion that is bent substantially perpendicularly to the other side of the sheet metal through a second bent portion and faces the first bent-up portion substantially parallel to each other, and is linear by tension. And a second bending portion through a third bending portion of the first bending portion and a fourth bending portion of the second bending portion and having a curved portion capable of extending to the center. Of the third bent portion and the fourth bent portion in a developed state before bending of the first bent portion and the second bent portion. The distance from the central position between the first bending portion and the second bending portion is shorter than the distance from the central position between the first bending portion and the second bending portion, and The bending length of the bending portion is determined so that the length along the bending portion between the barb portion and the fourth bending portion is equal to the length between the first bending portion and the second bending portion. It is characterized by that.

According to the structure of the pair of bent portions of the sheet metal according to claim 1, since the bent portion is supported by the sheet metal and the connecting portion, the supporting strength of the bent portion is increased.
Even if the thickness of the bent portion is thin, the bent portion is less likely to be deformed, a stable shape can be maintained, and the sheet metal product can be thinned and downsized. Further, by setting the positions of the third bending portion and the fourth bending portion and setting the bending portion of the connecting portion, the bending height of the connecting portion for reinforcing the sheet metal is set to a height different from that of the reference flat surface such as the sheet metal. Since it can be set, the degree of freedom in design can be increased. Therefore, when applied to the switch operating mechanism, it is possible to reduce the thickness of the entire switch operating mechanism.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A switch operating mechanism to which the structure of a pair of bent and bent portions of a sheet metal of the present invention is applied will be described below.
This will be described in detail with reference to FIGS. 1 and 2. FIG. 1 shows a shape of a switch operating lever of a switch operating mechanism in a developed state before bending a bent portion. FIG. 2 shows a switch operating mechanism, (a) is a plan view of the switch operating mechanism, and (b) is a side view thereof.

1 and 2, 1 is a switch operating lever, 2 is a substrate, 3 and 4 are switches, and 5 is a case. In FIG. 2A, the guide groove 1a of the switch operating lever 1 is slidably mounted on a shaft 2a provided on the substrate 2, and the switch operating lever 1 has a length of the guide groove 1a along the shaft 2a. It is slidable in the range of left and right. When the switch operating lever 1 moves to the right, the first bent-up portion 1b pushes the actuator 3a of the first switch 3 to operate the first switch 3. Also,
When the switch operating lever 1 moves to the left, the second bent portion 1c pushes the actuator 4a of the second switch 4 to operate the second switch 4.

Here, the switch operating lever 1 is formed of a sheet metal, and the bent and bent molding pieces 7a and 7b are formed at the center thereof.
Is integrally formed, and a bent portion is formed on this. That is, the structure of the bent-up portion is such that the bent-up portion forming piece 7a as one side of the sheet metal is bent substantially perpendicularly through the first bent portion 1d and the other side of the sheet metal. As a result, the bent portion forming piece 7b is bent substantially perpendicularly through the second bent portion 1f, and the second bent portion 1c faces substantially parallel to the first bent portion 1b. A third bent portion 1e and a second bent portion 1c of the first bent portion 1b having a stretchable curved portion 1j in the center.
Connecting part 1i interconnecting each other via the fourth bent part 1g
And Therefore, the first bent portion 1b of the switch operating lever 1 is provided with the first bent portion 1d and the third bent portion 1e, and the second bent portion 1c provided facing each other is also provided with the first bent portion 1d. Two bent portions 1f and a fourth bent portion 1g are provided, and the second bent portion 1ej and the fourth bent portion 1g are connected by a connecting portion 1i which is independent from the switch operation basic plane 1h.

Further, in FIG. 1B, the third bent portion 1
e and the fourth bent portion 1g are provided at a position higher than the first bent portion 1d and the second bent portion 1f provided on the basic plane 1h in order to avoid interference with the case 5. That is, in the unfolded state of the first bent portion 1b and the second bent portion 1c before bending, the distance from the center position between the third bent portion 1e and the fourth bent portion 1g is the first. It is set shorter than the distance from the central position between the first bent portion 1d and the second bent portion 1f.

The length along the curved portion 1j between the third bent portion 1e and the fourth bent portion 1g is defined as the length between the first bent portion 1d and the second bent portion 1f. The bending length of the bending portion 1j is determined so as to be equal to. That is, as described above, if the heights of the bent portions are different, the distance from the first bent portion 1d to the second bent portion 1f and the length of the connecting portion 1i are different at the time of unfolding. Therefore, as shown in FIG. 1, the curved portion 1j is provided in the middle of the connecting portion 1i when the sheet metal is developed.
By providing the curved portion 1j by the bending process, the length from the first bending portion 1d to the second bending portion 1f and the length of the connecting portion 1i can be made equal to each other, and the first bending up portion 1 can be formed.
b and the second bent portion 1c can be made parallel to each other.
Then, the connecting portion 1i reinforces the bent portions 1b and 1c, and the deformation thereof can be prevented.

The bent portions 1b and 1c according to the present invention.
Includes the case of being formed by cutting and raising.

[0013]

According to the structure of the pair of bent portions of the sheet metal according to claim 1, since the bent portion is supported by the sheet metal and the connecting portion, the supporting strength of the bent portion is increased. Even if the thickness of the raised portion is thin, the bent portion is less likely to be deformed, a stable shape can be maintained, and the sheet metal product can be made thinner and smaller. Further, by setting the positions of the third bending portion and the fourth bending portion and setting the bending portion of the connecting portion, the bending height of the connecting portion for reinforcing the sheet metal is set to a height different from that of the reference flat surface such as the sheet metal. Since it can be set, the degree of freedom in design can be increased. Therefore, when applied to the switch operating mechanism, it is possible to reduce the thickness of the entire switch operating mechanism.

[Brief description of drawings]

FIG. 1 is a front view of a bent state of a switch operating mechanism according to an embodiment of the present invention in a developed state.

FIG. 2 shows a switch operating mechanism, (a) is a plan view,
(B) is a side view.

3A and 3B show a conventional switch operation mechanism, FIG. 3A is a plan view and FIG. 3B is a side view.

[Explanation of symbols]

 1 Switch Operating Lever Formed from Sheet Metal 1b First Bent Part 1c Second Bent Part 1d First Bent Part 1e Third Bent Part 1f Second Bent Part 1g Fourth Bent Part 1i Connecting Part 1j Curved part

Front page continuation (72) Inventor Yoshikazu Yamano 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A sheet metal, a first bent portion bent substantially vertically on one side of the sheet metal via a first bent portion, and a second bent portion on the other side of the sheet metal. And a first curved portion that is bent substantially vertically and faces substantially parallel to the first curved portion, and a curved portion that can be linearly extended by pulling in the center. A connecting portion for interconnecting the first bent portion and the second bent portion via the third bent portion of the raised portion and the fourth bent portion of the second bent portion. In the unfolded state of the first bent-up portion and the second bent-up portion before bending, the distance from the central position between the third bent portion and the fourth bent portion is the first. Of the third bending portion and the fourth bending portion of the third bending portion and the fourth bending portion of the third bending portion The bending length of the bending portion is determined such that the length along the bending portion between the bending portions is equal to the length between the first bending portion and the second bending portion. A structure of a pair of bent and bent portions of a sheet metal.