JPH04115726U - leaf switch - Google Patents

Abstract

(57) [Summary] [Structure] Flexible substrate 3 and elastic metal plate 4 on base 2
to be fixed. The two contact patterns 33 and 32 provided on the flexible substrate are held by the flexible substrate support surface 21 of the base 2 and the upright plate 22, respectively, so that the two surfaces thereof are perpendicular to each other. Contact pattern 3 is provided on the elastic metal plate 4.
3, and an elastic contact plate 43 which is bent into a U-shape and comes into elastic contact with other contact patterns 32 are provided. A pressing member 5 is disposed near the tip of the elastic contact plate 43 to press the vicinity of the tip to bring the contact pattern 32 and the elastic contact plate 43 into and out of contact. [Effect] Contact pattern 3 provided on flexible substrate 3
Since the connection between 2 and 33 is directly turned on and off by one elastic metal plate 4, the number of parts is small, the structure is simple, and the device can be made smaller. Since the flexible substrate 3 is flexible and bendable, it is easy to closely fix it on the complex-shaped base 2.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a leaf switch that utilizes the elastic force of a leaf spring.

0002

[Prior art]

Conventionally, the operation parts of electronic devices such as video tape recorders have been equipped with on/off leaves. switch is used. Conventionally, this type of leaf switch has two Fix two metal plates so that they are in elastic contact, and then rotate both metal plates. Connect with solder to the circuit pattern of a separately prepared hard board made of resin using a wire. Furthermore, a push rod was provided to separate the elastic contact between the two metal plates.

0003

[Problem that the idea aims to solve]

However, the conventional leaf switch mentioned above not only has a large number of parts but also , connecting a circuit pattern on a hard board and a metal plate with lead wires by soldering, etc. If the work is complicated or the shape of the base on which the leaf switch is placed is complicated, this is recommended. It was difficult to respond to

0004 The present invention was developed in view of the above points, and it is possible to reduce the number of parts and facilitate assembly. Easy to work with, even if the base on which the leaf switch is placed has a complicated shape, it can be easily mounted. The purpose is to provide a leaf switch that can handle

[0005]

[Means to solve the problem]

In order to solve the above problems, the leaf switch 1 according to the present invention has a circuit pattern on the surface. A flexible cable with a turn and two contact patterns 32 and 33 at predetermined positions. the flexible substrate 3, and the two contact patterns arranged on the back side of the flexible substrate 3. a base 2 that comes into contact with the back surfaces of the contacts 32 and 33 and holds the contact pattern surfaces at a predetermined angle; is fixed on the flexible substrate 3 and connected to one side of the flexible substrate 3. The elastic contact plate 42 contacts the dot pattern 33 and is bent into a U-shape. an elastic contact plate 43 whose portion elastically contacts another contact pattern 32 of the flexible substrate 3; an elastic metal plate 4 comprising an elastic metal plate 4, and an elastic contact plate 4 formed by bending the elastic metal plate 4 into a U-shape. 3, and presses the vicinity of the tip to make elastic contact with the other contact pattern 32. It is configured to include a pressing member 5 that brings the contact plate 43 into and out of contact.

[0006]

[Effect]

An elastic metal plate 4 is provided between the contact patterns 33 and 32 provided on the flexible substrate 3. Since it has a structure in which it is turned on and off directly by the girder contact plates 42 and 43, the number of parts is small. Moreover, the structure is simple and the size can be reduced.

[0007] Furthermore, even if the shape of the base 2 on which the flexible substrate 3 is attached is complicated, the Since the flexible substrate 3 is flexible and bendable, it is placed closely on the base 2. It can be easily fixed.

[0008]

【Example】

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. FIG. 1 is a perspective view showing the overall configuration of a leaf switch 1 according to this embodiment. same As shown in the figure, this leaf switch 1 is mounted on a flexible base 2 made of synthetic resin. A U-shaped elastic contact plate 43 provided on the elastic metal plate 4 on which the substrate 3 and the elastic metal plate 4 are mounted and fixed. A pressing member 5 is arranged at a position to press the tip of the holder. Each component below I will explain about it.

[0009] FIG. 2 is an exploded perspective view of the leaf switch 1 (however, the pressing member 5 is (omitted). As shown in the figure, the base 2 is integrally molded from synthetic resin. The upper surface (flexible substrate support surface 21) is configured to be planar. The flexi A flat standing plate 22 is vertically provided on the bull board support surface 21 . Applicable On the upper edge of the installation plate 22, there is an L-shaped locking claw 23 whose tip points downward. It is provided. Moreover, on the flexible substrate support surface 21, an elastic metal plate as described below is provided. Two protrusions 24, 24 for fixing 4 are provided.

0010 Next, as shown in FIG. It is configured by providing contact plates 42 and 43. Here, the elastic contact plate 42 is one side of the base 41. A downwardly curved contact point 42a is provided at the tip of the protruding contact point 42a. bullet contact The other side of the base 41 of the plate 43 is first bent vertically upward, and the tip of the plate 43 forms a U-shape. A contact point that is bent to the outside and curved outward at approximately the center of the folded part 43a. The vicinity of the bent tip of the elastic contact plate 43 is , is a pressing portion 43b with which the tip of the pressing member 5 shown in FIG. 1 comes into contact. Further applicable Two through holes 44, 44 are provided at predetermined positions on the base 41.

[0011] Next, FIG. 3 is an exploded perspective view of the flexible substrate 3 shown in FIG. 2. It is shown in the same figure. Uniko's flexible board 3 is a flexible board with a predetermined circuit pattern on its surface. A spacer 37 is placed on the upper surface of the flexible board main body 31. Here The flexible board main body 31 is placed at a predetermined position on a flexible synthetic resin film. While forming two contact patterns 32 and 33, the contact patterns 32 and 33 are They are connected to conductive patterns 34 and 35, respectively. In addition, the conductive pattern The pins 34 and 35 are connected to other predetermined locations (not shown) on the flexible substrate body 31, respectively. connected to the circuit. Further, at a predetermined position of the flexible substrate main body 31, the base Through holes 36, 36 are provided through which the protrusions 24, 24 of the base 2 pass.

0012 The spacer 37 is made of the same synthetic resin film as the flexible board main body 31. A contact pattern provided on the flexible substrate body 31 is placed at a predetermined position. A notch 38 that exposes the pin 33 and a through hole through which the protrusions 24, 24 of the base 2 are inserted. Through holes 39, 39 are provided. Then, there is a space on the flexible board main body 31. By pasting the cover 37, the flexible substrate 3 as shown in FIG. 2 is completed. this When the contact pattern 33 is exposed from the notch 38 of the spacer 37, the contact pattern 33 is exposed from the notch 38 of the spacer 37. The horn 32 is also not covered by the spacer 37. Note that this spacer 37 is placed on top of this. The elastic metal plate 4 to be placed and the circuit pattern on the flexible board body 31 are in direct contact with each other. This is provided to prevent conduction due to contact with the It is essential.

[0013] To assemble this leaf switch 1, first install the base as shown in Figure 2. The flexible substrate 3 is placed on the flexible substrate support surface 21 on the flexible substrate 2 . At this time The protrusions 24, 24 provided on the flexible substrate support surface 21 are attached to the flexible substrate 3. It passes through the provided through holes 36 and 39, and also contacts the contact pattern 32 of the flexible substrate 3. The surface on which the Then, its upper end side engages with the locking pawl 23. Fold this flexible board 3 vertically. The bent portion is secured by three points: the two protrusions 24, 24 and the locking claw 23. is fixed in this state.

[0014] Next, as shown in FIG. 2, an elastic metal plate 4 is placed on this flexible substrate 3. . At this time, the projections 24, 24 of the base 2 are inserted into the through holes 44, 44 of the elastic metal plate 4. The elastic metal plate 4 is penetrated and the tips of the protrusions 24, 24 are hot caulked. It is securely fixed on the base 2. At this time, as shown in FIG. The contact points 42a of the elastic contact plate 42 are connected to the contact pattern 33 provided on the flexible substrate 3. The contact points 43a of the elastic contact plate 43 are brought into elastic contact with the contact pattern 32.

[0015] As shown in FIG. The pressing member 5 is arranged at. This pressing member 5 is movable in the direction of arrow A shown in the figure. It is configured. This completes the leaf switch 1.

[0016] Next, the operation of this leaf switch 1 will be explained. The state shown in FIG. 1 is the contact pattern 4 of the two elastic contact plates 42 and 43 of the elastic metal plate 4. A diagram showing a state in which 2a and 43a are in contact with two contact patterns 33 and 32, respectively. It is. In other words, at this time, the two contact patterns 33 and 32 are in the on state. be.

[0017] Next, when the pressing member 5 shown in FIG. 1 presses the pressing part 43b of the elastic metal plate 4, , the state shown in FIG. 4 is reached, and the contact 43a provided on the elastic contact plate 43 is connected to the contact pattern 32. leave. In other words, at this time, the connection between the two contact patterns 32 and 33 is turned off.

[0018] In the above embodiment, two contact patterns provided on the flexible substrate 3 32 and 33 were supported by the base 2 so that they were perpendicular, but the angle between them was can be changed in any way by changing the shape of the base 2. In other words, flexible Since the base plate 3 is flexible and bendable, the surface shape of the base 2 on which it is placed is You can easily change the angle and shape of both by simply changing .

[0019]

[Effect of the idea]

As explained in detail above, the leaf switch according to the present invention provides the following: It has such excellent effects.

[0020] A contact pattern is formed on a flexible substrate as part of a circuit pattern. The elastic contact plate made of an elastic metal plate makes elastic contact with this contact pattern, so there is no lead between the two. There is no need to solder wires or the like. Also, only one elastic metal plate can be used. Ru. In other words, by simply attaching one elastic metal plate to a flexible board, you can Since the switch can be configured, the number of parts is small, the assembly work is easy, and the cost is low. It can be downsized and downsized.

[0021] Even if the shape of the base on which the leaf switch is placed is complicated, it is possible to place the leaf switch on the base. The flexible substrate is flexible and bendable, so the flexible substrate can be It is easy to fix it closely on the base. In other words, for bases with complex shapes. Additionally, a leaf switch can be easily installed.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a leaf switch 1 according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the leaf switch 1.

3 is an exploded perspective view of the flexible substrate 3 shown in FIG. 2. FIG.

FIG. 4 is a diagram for explaining the operation of the leaf switch 1.

[Explanation of symbols]

1 leaf switch 2 Base 3 Flexible board 4 Elastic metal plate 5 Pressing member 32, 33 Contact pattern 42,43 Ballistic plate 42a, 43a contacts

Claims (1)

[Scope of utility model registration request] 1. A flexible substrate having a circuit pattern on its surface and two contact patterns at predetermined positions; and a flexible substrate having a circuit pattern on the back surface of the flexible substrate and contacting the back surface of the two contact patterns. a base for holding the flexible substrate at a predetermined angle; an elastic contact plate fixed on the flexible substrate and making elastic contact with one contact pattern of the flexible substrate; an elastic metal plate having an elastic contact plate that comes into elastic contact with another contact pattern, and a U of the elastic metal plate;
A leaf characterized by comprising a pressing member disposed near the tip of the elastic contact plate bent in the shape of a letter to press the vicinity of the tip to bring the other contact pattern and the elastic contact plate into contact with each other and away from each other. switch.