JPS64721B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to a moderation mechanism used in a mechanical switching device, switch, etc. to determine a switching position and to obtain a crisp operating feel. <Prior art> This type of moderation mechanism includes a concavo-convex member having a sliding surface having peaks and valleys, and a slider that slides on the sliding surface of the concave-convex member with a constant pressure. For example, a plastic molded product or metal is used as the uneven member, and the surfaces of the peaks and valleys of the sliding surface are made of the same material. <Problems to be Solved by the Invention> In order to obtain a good moderation effect, the height and depth of the peaks and valleys, their shape and the shape of the slider,
In addition, it is necessary to appropriately select the spring pressure, etc. that applies a certain pressure to the slider, but in conventional products, the sliding surfaces are made of the same material, so if the slider is improved, it will stop at the trough. There was a problem in that it was easy for the driver to jump over the vehicle without moving, and if the slippage worsened, a large amount of operating force would be required, so a compromise had to be made at an appropriate point. The present invention has been made for the purpose of solving these problems and providing a moderation mechanism that provides a good moderation effect and operational feel. <Means for Solving the Problems> In order to achieve the above-mentioned object, the moderation mechanism of the present invention comprises the sliding surfaces of the peaks of the uneven member made of a material with a low coefficient of friction, and the sliding surfaces of the valleys of the concavo-convex member. It is characterized by being made of a material with a higher coefficient of friction than the material of the ridges. <Function> In the moderation mechanism of the present invention, slippage is good at the peaks and poor at the valleys, so skipping is less likely to occur, making it easy to stop accurately at a predetermined position, and requiring a relatively small operating force. This allows for smooth switching and a crisp operation feel. <Example> Next, the illustrated example will be described. In the figure, 1 is a concavo-convex member, 2 is a slider, and the top surface of the concave-convex member 1 is a sliding surface 5 in which a plurality of peaks 3 and troughs 4 are alternately and continuously formed. 6
is a coating formed on the top of the mountain portion 3, and the coating 6
A material having a lower coefficient of friction than the material constituting the entire uneven member 1 is used, and the coating 6 is integrated with the uneven member 1 by means of plating, adhesion, embedding, or the like. Furthermore, a smooth sliding surface 5 is formed without any step at the edge of the coating 6. As for the material of the coating 6, the smaller the coefficient of friction with respect to the material of the uneven member 1, the better the results obtained, and an example thereof is an amorphous metal.
That is, since amorphous metals generally have extremely low coefficients of friction, high hardness, and excellent wear resistance, they can be said to be particularly suitable materials for the coating 6 on the peaks 3. In the following, the case where an amorphous metal is used for the coating 6 will be explained. The material of the uneven member 1 itself may be plastic or metal, and the parts other than the peaks 3 are covered with masking tape for plating or a masking agent for chemical plating. After that, plating treatments such as electroless plating using sodium hypophosphite as a reducing agent for nickel alloys or cobalt alloys containing phosphorus or boron, or electroless plating using a boron hydride compound as a reducing agent are performed. Then, a plating layer of the above-mentioned alloy is formed on the surface of the peak portion 3 to form the amorphous metal coating 6. In addition, a film formed by a vapor deposition process such as sputtering vapor deposition of the above-mentioned alloy, a film formed by an electroforming method, or a film formed by a liquid quenching method, that is, a film formed by an amorphous metal ribbon, etc., is used to form a film. 6 can also be formed. In order to prevent a step from forming at the edge of the coating 6, for example, the portion where the coating 6 is to be formed is made concave in advance by the thickness thereof, or if the uneven member 1 is made of thermoplastic resin, the coating 6 is After forming, heat is applied to apply pressure to the coating 6, and this is applied to the mountain portion 3.
What is necessary is to perform processing such as embedding it in . With the above configuration, in this embodiment, the valley portion 4
In this case, due to the moderately high coefficient of friction commensurate with the operating force, there is no problem such as the slider 2 climbing up and jumping over the troughs 4, and the slider 2 easily climbs over the peaks 3 due to the low coefficient of friction. A moderation mechanism with a smooth and crisp operation feeling is obtained. In addition, when the coating 6 on the peak part 3 of the uneven member 1 is an amorphous alloy film of nickel alloy or cobalt alloy,
Since it has good adhesion and extremely high wear resistance, the material of the coating 6 will not wear out or move to the valleys 4 even after long periods of sliding. It also has excellent durability. The following table shows a comparison between Examples 1 and 2, in which the material combinations of the peaks 3 and troughs 4 are different, and the conventional example, and it can be seen that the performance of Examples 1 and 2 is superior to the conventional example. It is shown.

【table】

[Table] <Effects of the Invention> As described above, the present invention has a structure in which the frictional resistance of the sliding surface of the peaks of the uneven member is lower than that of the valleys, and the operation is smooth and good. It is possible to obtain a moderation mechanism that exhibits a moderation effect and has a crisp operation feeling, and improves the switching performance of switches and the like.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the essential parts. DESCRIPTION OF SYMBOLS 1... Uneven member, 2... Slider, 3... Mountain part, 4... Valley part, 5... Sliding surface, 6... Coating.

Claims (1)

[Scope of Claims] 1. Moderation consisting of a combination of a concavo-convex member having a sliding surface having peaks and troughs, and a slider that slides with a constant pressure on the sliding surface of the concave-convex member. A moderation mechanism characterized in that the sliding surfaces of the peaks of the uneven member are made of a material with a low coefficient of friction, and the sliding surfaces of the valleys are made of a material with a higher coefficient of friction than the material of the peaks. . 2. The moderation mechanism according to claim 1, in which an amorphous metal is used as the material with a low coefficient of friction for the mountain portions.