JP2010067421A - Rotary switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary switch in which a clear click feeling is generated in operation and the number of parts is less and assembling is easy while in a conventional rotary switch, it is necessary that a part to generate click feeling is additionally installed in order to give the click feeling separately from a contact piece to carry out switching of a contact. <P>SOLUTION: In the rotary switch equipped with a rotor installed in a housing, a movable contact piece rotatable together with the rotor, and the base in which a fixed contact piece corresponding to the movable contact piece is deployed, a protrusion is formed in the movable contact piece. By means that this protrusion is elastically contacted with an uneven face installed at the inner housing, the click feeling is generated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotary switch that switches contacts by a rotating operation, and relates to a rotary switch that generates a clear click feeling during operation and has a small number of parts and is easy to assemble.

As a conventional rotary switch, as the rotary operation knob rotates, a click feeling is obtained by selectively fitting the fitting convex portions of the substantially ring-shaped leaf springs into the plurality of concave portions provided on the upper surface of the rotary operation knob. There is something to put out. (Patent Document 1 below)
In addition, there is a type in which a slider piece for engaging with and disengaging from a click pattern is a metal piece integrated with a contact switching slider piece. (Patent Document 2 below)
JP 2008-166158 A Utility Kaihei 5-65025

  However, in the above-described conventional rotary switch, in Patent Document 1, it is necessary to attach a substantially ring-shaped leaf spring that gives a click feeling separately from the contact piece that contacts the fixed contact. Further, in Patent Document 2, the slider piece for engaging and disengaging the click pattern is a metal piece integrated with the contact switching slider piece, but separately, the slider sliding on the common electrode. Was necessary. As described above, in order to provide the click mechanism, the number of parts is increased, which hinders the reduction of assembly man-hours and costs.

  Accordingly, an object of the present invention is to provide a rotary switch that can reduce the number of parts and can be easily assembled in view of the above situation.

In order to achieve the above object, the present invention provides
[1] In a rotary switch including a rotor provided in a housing, a movable contact piece rotatable with the rotor, and a base provided with a fixed contact piece corresponding to the movable contact piece, the movable contact piece A convex portion is formed, and the convex portion elastically contacts a concave and convex surface provided on the inner surface of the housing to generate a click feeling.
[2] In the switch according to [1], the movable contact piece is formed by bending a metal plate-like elastic member, forming the convex portion at a substantially central portion, and the fixed contact piece at both ends. Forming a contact portion in contact with.

According to the present invention, the following effects can be achieved.
(1) Since the movable contact piece also serves as a click mechanism, the number of parts can be reduced.
(2) Since the number of parts can be reduced, assembly is easy.
(3) Since the number of parts can be reduced and the assembly is easy, the manufacturing cost can be reduced.
(4) By making the uneven surface provided in the housing elastically contact with the convex portion formed on the movable contact piece, a clear click feeling can be given during operation.
(5) Since the click feeling can be given by elastically contacting the convex portions formed on the movable contact piece, it is possible to generate a click feeling that is surely linked to the contact switching operation by the movable contact piece.
(6) The click feeling can be easily adjusted by changing the height difference of the uneven surface of the housing.

  The present invention relates to a rotary switch including a rotor provided in a housing, a movable contact piece rotatable with the rotor, and a base provided with a fixed contact piece corresponding to the movable contact piece. And a convex portion is elastically contacted with an uneven surface provided on the inner surface of the housing to generate a click feeling. Therefore, a clear click feeling can be generated during operation, but the number of parts can be reduced and assembly can be easily performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is an exploded perspective view of a rotary switch representing an embodiment of the present invention, FIG. 2 is a perspective view of a rotary switch representing an embodiment of the present invention, and FIG. 3 is a plan view of the rotary switch representing an embodiment of the present invention. 4 is a cross-sectional view of the main part of the click feeling generating portion of the rotary switch representing the embodiment of the present invention, and FIG. 5 is a cross-sectional view of the base of the rotary switch representing the embodiment of the present invention.

  In these drawings, 1 is a base, 2 is a rotor, 3 is a movable contact piece, and 4 is a housing. The base 1 has a fixed contact piece 1a on the inner bottom surface, and a fitting projection 1b on the outer surface. The rotor 2 is formed with an engaging groove 2a that engages with the movable contact piece 3, and an operation portion 2b is provided at the center. The movable contact piece 3 is formed by bending a metallic plate-like elastic member into a substantially U-shape, and a convex portion 3a is formed at a substantially central portion, and contact portions that come into contact with the fixed contact piece 1a at both ends. 3b and 3c are formed. The housing 4 is formed with a through hole 4a through which the operation portion 2b passes, a fitting hole 4b is formed on the side surface to be fitted with the fitting protrusion 1b, and a concave surface 4c and a convex surface for generating a click feeling on the inner surface. 4d is provided.

  The movable contact piece 3 is engaged with the engagement groove 2 a of the rotor 2, the convex portion 3 a of the movable contact piece 3 engages with the concave surface 4 c of the housing 4, and the operation portion 2 b of the rotor 2 passes through the through hole 4 a of the housing 4. The rotor 2 is disposed in the housing 4 so as to penetrate therethrough. Then, the fitting projection 1b of the base 1 is fitted into the fitting hole 4b of the housing 4 to complete the rotary switch.

  In the rotary switch of the present invention configured as described above, the movable contact piece 3 rotates with the rotation operation of the operation portion 2b, and the contact portion 3b slides on the common contact 1c of the fixed contact piece 1a. When the contact portion 3c comes into contact with the fixed contact 1d corresponding to each set position, the common contact 1c and the fixed contact 1d are sequentially conducted via the movable contact piece 3 to switch the contact. At this time, the convex portion 3a climbs over the convex surface 4d from the concave surface 4c and elastically contacts the adjacent concave surface 4c to generate a click feeling.

  As described above, the rotary switch shown in the present embodiment can provide a click feeling in conjunction with the switching of the contacts, and the movable contact piece 3 also serves as a click mechanism, so that the number of parts can be reduced and the assembly can be easily performed. It has the feature of being able to. Further, since the component cost and the number of assembly steps can be reduced, the manufacturing cost can be reduced.

  Furthermore, since the convex portion 3a of the movable contact piece 3 is elastically contacted with the uneven surface of the housing 4, it has a feature that a clear click feeling can be generated during operation.

  Further, by forming the convex portion 3a integrally with the movable contact piece 3, it has a feature that it is possible to generate a click feeling reliably linked to the contact switching operation by the contact portions 3b and 3c. .

  Furthermore, the click feeling can be easily adjusted by changing the height difference between the concave surface 4c and the convex surface 4d of the housing 4.

  In this embodiment, five positions are switched, but the number of positions may be arbitrarily changed. In addition, the housing may be provided with a structure for preventing rotation of the rotor so that it cannot rotate beyond the switching range, and various methods are conceivable.

  In addition, this invention is not limited to said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The rotary switch of the present invention can provide a click feeling in conjunction with the switching of the contacts and can be used as a rotary switch that can be easily assembled.

It is a disassembled perspective view of the rotary switch showing the Example of this invention. It is a perspective view of the rotary switch showing the Example of this invention. It is a top view of the rotary switch showing the Example of this invention. It is principal part sectional drawing of the click feeling generation | occurrence | production part of the rotary switch showing the Example of this invention. It is sectional drawing of the base of the rotary switch showing the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 1a Fixed contact piece 1b Fitting protrusion 1c Common contact 1d Fixed contact 2 Rotor 2a Engagement groove 2b Operation part 3 Movable contact piece 3a Convex part 3b, 3c Contact part 4 Housing 4a Through-hole 4b Fitting hole 4c Concave surface 4d Convex surface

Claims (2)

In a rotary switch comprising a rotor provided in a housing, a movable contact piece rotatable with the rotor, and a base provided with a fixed contact piece corresponding to the movable contact piece, a convex portion is provided on the movable contact piece. The rotary switch is formed and generates a click feeling by elastically contacting the convex and concave portions provided on the inner surface of the housing. The movable contact piece is formed by bending a metallic plate-like elastic member, forming the convex portion at a substantially central portion, and forming contact portions that contact the fixed contact piece at both ends. The rotary switch according to claim 1.

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