JPH0419702Y2 - - Google Patents

Description

[Detailed description of the invention] <Purpose of the invention><Field of industrial application> The present invention relates to a slide switch for electrical and electronic equipment, and in particular improves the reliability of operation and workability during assembly. This relates to the shape of a novel conductive piece.

<Prior Art> Slide switches are often used as switch elements in various home appliances, car stereos, and other electrical equipment. In the conventional structure of such a slide switch, as shown in Fig. 7A and B, a contact piece 1' is inserted into an insulating holder 3', and a thin plate-shaped conductive piece is attached oppositely to the contact piece 1'. The piece 5' is attached to another holder 3', and the conductive piece 5' is sandwiched between the contact pieces 1' to form a desired electrical circuit and switch it. That's what I do. Among these, the contact piece 1' is housed in the holding part 7' of the holder 3', and clamping flaps 12' are arranged on the left and right, with the conductive piece 5' side as a free end from the fixed plate 10' side. It is something that exists.

<Problems with the Prior Art> Because of this configuration, when the holder 3' moves in the direction of the arrow in the figure when the slide switch 2' is operated, for example, as shown in FIG. 7C, At the position where the holding flap 12' holds the conductive piece 5' in its mouth (indicated by P ₁ in the figure), sliding resistance naturally increases due to the contact between the two, and on the other hand, when the holder 3' pushes the contact piece 1', P ₂ near bottom plate 10'
It is done in the position of For this reason, a moment is applied to the contact piece 1', and a so-called rolling state occurs in which the contact piece 1' as a whole is tilted each time it slides. If such a situation occurs, for example, the tip of the clamping flap 12' on the front side in the sliding direction will slide against the holder 4' on the conductive piece 5' side at the position indicated by P ₃ as the contact piece 1' tilts. As a result, resistance is added to the operation of the slide switch 2', resulting in a poor operating feel and deformation of the clamping flap 12' after long-term use, which eventually leads to electrical conductivity. It was also causing a situation where the damage was caused.

Furthermore, when such rolling occurs, the clamping flap 12' is tilted, causing a shift in the timing of contact with the conductive piece 5', causing the problem that switching cannot be performed at a desired timing.

Another problem is that when assembling this type of slide switch 2', the contact piece 1' is assembled into the holding part 7' of the holder 3', and then the conductive piece 1' is inserted from the open side of the holding part 7'. However, if the holding part 7' is not inserted correctly and is tilted, as shown in FIG.
2' was bent, which often resulted in defective products. Of course, even if the conductive piece 5' is placed accurately, the opening of the free end of the holding flap 12' is not well formed.

Of course, in order to improve the ease of assembly, improvements to the contact piece 1' as shown in FIG. 8 have been proposed;
2' is bent inward by more than 90 degrees from the side plate 11', so there are problems in that it is extremely difficult to maintain elasticity there, and it is difficult to form it. Ta.

<Problems attempted to be solved> The present invention was devised in view of the problems of the prior art, and it is possible to improve the operability of the slide switch, and to eliminate the occurrence of defects during assembly work. This is an attempt to develop a new contact piece for a slide switch that can be used as a contact piece for a slide switch.

<<Structure of the invention>><Means for achieving the purpose> In other words, the contact piece for a slide switch which is the invention is:
In a switch structure in which a contact piece made of a conductive material held by an insulating holder and a conductive piece held between the contact pieces move relative to each other and move toward and away from each other, circuit switching is performed. The contact piece has a bottom plate and side plates raised on both sides thereof, and the length of the contact piece in the moving direction is:
The length is such that it fits almost tightly into the holding recess of the holder that holds it, and the height of the side plate is approximately the same as the height of the holding recess at least at both front and rear edges, and the both side plates are provided with comb-shaped punchings. By forming a section, a clamping flap having a free end on the bottom plate side is formed in the remaining section to protrude inwardly, thereby achieving the above object. It is something.

<Example> The present invention will be specifically described below based on the illustrated example. Reference numeral 1 denotes a contact piece, which is assembled to the slide switch 2. First, the slide switch 2 to which the contact piece 1 of the present invention is applied will be explained. First, the contact piece 1 is assembled into a movable holder 3, which is one of the holders in the slide switch 2, and is fixed to the movable holder 3. A holder 4 is provided oppositely to the fixed holder 4, and a conductive piece 5 that is held between the contact pieces 1 and switches the contact state is provided on the fixed holder 4. Of course, it is possible to appropriately select which of the contact piece 1 and the conductive piece 5 should be in a fixed state, but the point is that they are integrated by the frame F etc. so that they can be moved relative to each other. It is composed of Generally, the conductive piece 5 penetrates through the fixed holder 4 and protrudes to the opposite surface to form a terminal 6, through which appropriate connections are made. The contact piece 1 is housed in a holding part 7 formed by cutting the center of the movable holder 3 into a cubic shape, and a conductive piece passage groove 8 is formed in the center of the movable holder 3 along its longitudinal direction. It is something to do. The contact piece 1 will be described in detail below. It is made of a thin copper plate or other conductive material press-molded. For example, it has a bottom plate 10 and is bent so as to be raised approximately 90 degrees from the bottom plate 10. The formed side plate 11 forms a channel-like structure as a whole. The length 1 of the contact piece 1 in the moving direction is slightly shorter than the length of the holding portion 7 in the moving direction, and is approximately the same length.
On the other hand, the height h of the side plate 11 is at least the depth d of the holding part 7 at the positions corresponding to both the front and rear ends of the holding part 7.
It is configured so that it is almost equal to . A clamping flap 12 is formed on this side plate 11, and the clamping flap 12 has, for example, a bent base on the free end side of the side plate 11, a free end on the bottom plate 10 side, and faces each other from both side plates 11. It is shaped so that it points inward. Of course, the specific shape of the clamping flaps 12 is such that the central portion of each flap protrudes inwardly, and both ends thereof are formed in a double-opened shape to allow the conductive piece 5 to pass through smoothly. still,
In this embodiment, when forming the clamping flap 12, the remaining parts other than the clamping flap 12 and the front and rear ends of the side plate 11 are positively punched out into a comb-like shape. Let it be the extraction part 13. Incidentally, when configured in this way, the bent portions 14 where the side plates 11 stand up relative to the bottom plate 10 are formed relatively short at both the front and rear ends, so that it is difficult to insert and remove the bending tool from the side ends during bending. It can be easily done, and the bending part 1
Since the dimensions of 4 itself are short, bending can be done more easily than when bending the entire length. Furthermore, the embodiment shown in FIG. 6 is an embodiment in which a slide guide 15 is formed for smooth sliding when the contact piece 1 and the fixed holder 4 come into contact with each other. The free end side is bent further inward by approximately 90 degrees. Furthermore, it is more preferable to form a guide protrusion 16 on the slide guide 15 in addition to this.

The present invention has the configuration described above, and has the following effects. First, I will explain the assembly method for this item. This follows the conventional work method. First, the contact piece 1 is attached to the holding part 7 of the movable holder 3, and its bottom plate 10 is oriented so that it touches the bottom of the holding part 7. It is meant to be inserted. After that, conductive piece 5
A fixed holder 4 equipped with a movable holder 3 is simply attached to the movable holder 3. In such a case, the conductive piece 5 smoothly enters the clamping flap 12 by pushing open the inwardly protruding state, and the assembly is completed. After this is done, the movable holder 3 and fixed holder 4 are of course held by another frame.

When operating the slide switch 2 configured in this way, the movable holder 3 is operated to slide against the fixed holder 4 in accordance with a conventional method to switch the contact state between the conductive piece 5 and the contact piece 1. , the desired circuit is switched. At this time, since the holding flap 12 of the contact piece 1 is holding the conductive piece 5, sliding resistance is applied at that part, and on the other hand, the contact piece 1 is pushed out by the movable holder 3. This movable holder 3
Since the pushing is done uniformly over the entire height of the side plate 11 of the contact piece 1, even if the contact piece 1 is loose against the holding part 7, there is no risk of it rolling and a smooth sliding condition is maintained. This is something that can be obtained. At this time, since the conductive piece 5 is elastically sandwiched between the bent base of the holding flap 12 holding the conductive piece 5 and the bent portion 14 of the side plate 11, the conductive piece 5 of the holding flap 12 is always stable. It is possible to obtain a clamping pressure against the wire and to form a reliable circuit. When the contact piece 1 receives the conductive piece 5, even if the bent portion 14 is sandwiched in an outward-opening shape, the pair of clamping flaps 12 tend to approach each other, preventing the conductive piece 5 from being gripped. Furthermore, this also results in stable circuit formation. Furthermore, during the sliding operation, there is almost no change in the posture of the contact piece 1, and the timing of contact with the conductive piece 5 is always constant, ensuring good switching timing.

<<Effects of the invention>> The present invention has the above-mentioned configuration. First, since the contact piece 1 does not roll at all when it moves, its sliding resistance is significantly reduced, resulting in excellent operation. It's something you can feel. Further, the absence of rolling of the contact piece 1 means that the conductive piece 5 and the holding flap 12 can always come into contact with stable timing, and circuit switching can be performed with accurate timing.
Moreover, stable conduction between the contact piece 1 and the conductive piece 5 can be ensured due to the structure of the holding flap 12.
Furthermore, in the present invention, when forming the clamping flaps 12, the free ends thereof are directed toward the bottom side, so that when the conductive piece 5 is inserted between the clamping flaps 12 during assembly, it may be damaged. There is no fear, assembly can be done easily, and there is no possibility of producing defective products. Of course, the fact that such easy assembly is possible is not limited to manual assembly, but also enables automatic mechanical assembly.

[Brief explanation of drawings]

Figure 1 is a partially enlarged perspective view of a slide switch to which the present invention is applied, Figure 2 is an exploded perspective view of the same as the above, and Figure 3 is an exploded perspective view of the same.
The figure is a vertical front view of the same as above, Figure 4 is a vertical side view of the same as above,
Fig. 5 is a perspective view of the contact piece, Fig. 6 is a perspective view and side view showing another embodiment of the contact piece, Fig. 7 is an explanatory view showing a conventional type, and A is a longitudinal sectional front view of the same; B is a vertical side view of the same as above, C is a vertical front view of the operating state, D is a vertical side view of the assembled state, and FIG. 8 is a side view of another conventional type. 1...Contact piece, 2...Slide switch, 3...
... Movable holder, 4 ... Fixed holder, 5 ... Conductive piece, 6 ... Terminal, 7 ... Holding section, 8 ... Conductive piece passing groove, 10 ... Bottom plate, 11 ... Side plate, 12 ... Holding flap , 15... slide guide, 16...
Guide protrusion, h...height of side plate, l...length of contact piece.

Claims (1)

[Scope of utility model registration request] In a switch structure in which a contact piece made of a conductive material held by an insulating holder and a conductive piece held between the contact pieces move relative to each other and move toward and away from each other, circuit switching is performed. The contact piece has a bottom plate and side plates raised on both sides of the bottom plate, and the length of the contact piece in the moving direction is such that it fits almost tightly into the holding recess of the holder that holds it, and the side plate The height of at least the front and rear edges is approximately the same as the height of the holding recess, and by forming comb-shaped punched portions on both sides of the plate, the remaining portion is provided with a clamping structure with the bottom plate as the free end. A contact piece for a slide switch, characterized in that flaps are formed to project inwardly and oppositely.