JPH0581926U - Click mechanism for rotating electrical components - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the rotation plate from being worn and to make the engagement member easy to assemble. [Structure] A rotary plate 6 having a plurality of teeth 6a on its outer periphery and rotatable integrally with a rotary shaft 3, and an engaging member 7 made of synthetic resin that engages with the outer periphery of the rotary plate 6. , This engaging member 7
And a metal leaf spring 8 that elastically urges the engaging member 7 in a direction of press-contacting the rotating plate 6, and the engaging member 7 is in line contact with the tooth 6a of the rotating plate 6. The semi-cylindrical part 7a was formed. [Effect] The service life and workability during assembly can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a click mechanism attached to a rotary operation type electric component such as a rotary switch or a rotary volume.

[0002]

[Prior Art]

 This type of rotary operation type electric component with a click mechanism includes a rotary shaft that rotationally drives the electric component, a rotary bearing that rotatably supports the rotary shaft, and a rotary shaft that is provided in the rotary bearing. A click mechanism that gives a sense of moderation is provided, and a knob is attached to one end of the rotary shaft.

A conventionally known click mechanism is made of a substantially disc-shaped synthetic resin or the like, and includes a rotating plate that is rotatable integrally with the rotating shaft, and a steel that engages with an outer peripheral portion of the rotating plate. It consists of a sphere and a leaf spring that applies an elastic force to the steel ball in the direction toward the rotary plate. Both ends of the leaf spring are supported by rotary bearings, and a plurality of teeth are formed on the outer peripheral portion of the rotary plate at predetermined intervals.

In such a click mechanism, when the operator grips the knob and rotationally operates the rotary shaft, the rotary plate also integrally rotates, and the steel balls are sequentially engaged with and disengaged from the teeth. At this time, an elastic force is applied to the steel ball in the direction toward the rotating plate by the leaf spring, that is, because this steel ball makes elastic contact with the outer peripheral portion of the rotating plate, it does not rotate when the steel ball fits into the teeth. The operating force required to rotate the shaft changes, and as a result, it is possible to obtain a feeling of moderation associated with the rotation of the rotating shaft.

[0005]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional click mechanism, when the steel ball rolls on the outer peripheral portion of the rotating plate due to the rotating operation of the rotating shaft, the two make point contact with each other, so that the outer peripheral portion of the rotating plate is significantly worn. There was a problem that the service life was considerably short. Further, in order to prevent excessive wear of the outer peripheral portion of the rotating plate, it has been troublesome to apply lubricating grease to the steel balls during assembly. Further, since the steel ball is a fairly small sphere, it is troublesome to handle, and it is difficult to assemble the steel ball and the leaf spring into the predetermined mounting positions while holding them.

The present invention has been made in view of the actual situation in the prior art as described above, and an object thereof is to prevent rotation of the rotating plate from being significantly worn and to easily install the engaging member. It is to provide a click mechanism for an operation type electric component.

[0007]

[Means for Solving the Problems]

 To achieve this object, the present invention provides a rotatable rotary shaft, a rotary plate that is rotatable integrally with the rotary shaft, and has a plurality of teeth on its outer peripheral portion, and disengages from the teeth. An engaging member and a spring member that elastically urges the engaging member in a direction in which the engaging member is pressed against the tooth are provided. With the rotation of the rotating shaft, the engaging member disengages from the tooth and a moderation feeling is obtained. In the click mechanism of the rotary operation type electric component that causes the above, the engaging member is formed of synthetic resin, and the engaging member is formed with a semi-cylindrical portion that comes into contact with the teeth of the rotating plate, and The most main feature is that the engaging member is integrally provided on a spring member made of a metal spring plate.

[0008]

[Action]

 The engaging member is made of a flexible synthetic resin, and its semi-cylindrical portion makes linear contact with the teeth on the outer peripheral portion of the rotary plate, so that significant wear of the outer peripheral portion of the rotary plate can be prevented. Further, since the engaging member is integrally provided with the spring member made of a metal spring plate, the spring member and the engaging member can be assembled at the same time while holding the spring member. In particular, when oil-impregnated polyacetal is used as the engaging member, the application of lubricating grease is not required, so this assembling work is significantly simplified.

[0009]

Embodiment An embodiment of a click mechanism for a rotary operation type electric component of the present invention will be described below with reference to the drawings. FIG. 1 is a rear view of an embodiment of a click mechanism for a rotary operation type electric component according to the present invention, and FIG. 2 is a perspective view of an engaging member and a spring member included in the click mechanism shown in FIG. 3 is a sectional view of the click mechanism of FIG. Note that FIG. 1 is a view of the click mechanism viewed from the back side in a state where the electric components shown in FIG. 3 are removed.

A rotary operation type electric component 1 shown in FIG. 3 has a knob 2 attached to one end thereof, a rotary shaft 3 for rotationally driving the electric component 1, a rotary bearing 4 for rotatably supporting the rotary shaft 3, and It has a click mechanism 5 provided in the rotary bearing 4 and imparting a click feeling to the rotary shaft 3.

As shown in FIG. 1, the click mechanism 5 is formed in a substantially disc shape, and engages with a rotary plate 6 which is rotatable integrally with the rotary shaft 3 and an outer peripheral portion of the rotary plate 6. An engaging member 7 and both ends of the engaging member 7 are supported by the rotary bearing 4, and a metal leaf spring 8 that applies an elastic force to the engaging member 7 in the direction toward the rotary plate 6. A plurality of teeth 6a are continuously formed at a predetermined interval on the outer peripheral portion of the rotating plate 6 described above, and are arranged on one side surface of the rotating plate 6 in synchronization with the teeth 6a. A plurality of patterns 6b are provided. The above-mentioned engaging member 7 is made of synthetic resin, such as oil-impregnated polyacetal, which is integrally provided with the leaf spring 8 by outsert molding. As shown in FIG. It has a semi-cylindrical portion 7a that abuts.

In this embodiment, when the operator grips the knob 2 and rotates the rotary shaft 3, the rotary plate 6 also rotates integrally, and the outer peripheral portion of the rotary plate 6 is engaged with the engaging member. The semi-cylindrical portion 7a of 7 slides. At that time, since the engaging member 7 is elastically biased by the leaf spring 8 in the direction of being pressed against the outer peripheral portion of the rotary plate 6, when the semi-cylindrical portion 7a is sequentially engaged with and disengaged from each tooth 6a. The operating force required to rotate the rotary shaft 3 changes, and as a result, a click feeling is felt by the operator via the rotary shaft 3 and the knob 2.

In the embodiment configured as described above, the engaging member 7 is made of a synthetic resin that is more flexible than the conventional steel ball, and the semi-cylindrical portion 7 a thereof is in line contact with the outer peripheral portion of the rotary plate 6. Therefore, significant wear of the outer peripheral portion of the rotary plate 6 can be prevented. Further, since the engaging member 7 is provided integrally with the leaf spring 8, both the leaf spring 8 and the engaging member 7 can be assembled at the same time while holding the leaf spring 8, and the engaging member 7 Since oil-impregnated polyacetal is used as the material of 7, the application of lubricating grease, which has been conventionally required, can be omitted, and therefore the above-mentioned assembling work can be performed extremely easily. Furthermore, since the contact between the engaging member 7 and the rotary plate 6 is made of synthetic resin, the generation of noise can be suppressed and the feeling can be improved.

[0014]

[Effect of the device]

 Since the present invention is configured as described above, the rotating plate can be prevented from being significantly worn, and the engaging member can be easily assembled, thus improving the service life and the workability during assembly. You can

[Brief description of drawings]

FIG. 1 is a view of a click mechanism of a rotary operation type electric component according to an embodiment of the present invention as viewed from the back side.

FIG. 2 is a perspective view of an engagement member and a spring member included in the click mechanism shown in FIG.

3 is a cross-sectional view of the click mechanism of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotation operation type electric component 3 Rotation shaft 5 Click mechanism 6 Rotating plate 6a Teeth 7 Engaging member 7a Semi-cylindrical part 8 Leaf spring (spring member)

Claims (2)

[Scope of utility model registration request] 1. A rotary shaft which can be rotated, a rotary plate which is rotatable integrally with the rotary shaft and has a plurality of teeth on its outer peripheral portion, an engagement member which is engaged with and disengaged from the teeth, and this engagement. A rotation operation type electric device, comprising: a spring member that elastically biases a coupling member in a direction in which it is pressed against the tooth, and the engaging member disengages with the tooth in association with rotation of the rotating shaft to generate a feeling of moderation. In the click mechanism for parts, the engaging member is molded of synthetic resin, and a semi-cylindrical portion that abuts the teeth of the rotary plate is formed on the engaging member, and the engaging member is made of metal. A click mechanism for a rotary operation type electric component, which is integrally provided on a spring member made of a spring plate. 2. The click mechanism for a rotary operation type electric component according to claim 1, wherein the engaging member is made of oil-impregnated polyacetal.