1. Technical Field
The present disclosure relates to a rotary operation type switch that is installed in any of various devices, such as in the remote operation panel of a shoulder-mounted camera, for example.
2. Description of the Related Art
In the past, with a structure in which the operation of a rotating body was transmitted through another structure to a detector switch, a mechanism was employed for fixing a shaft or other such structure whose purpose is to transmit an operation (hereinafter referred to as a transmission structure) on the rotating body side by press fitting.
For example, Patent Literature 1 discloses a volume adjustment knob with which the operation of a rotating body is transmitted directly to a detector switch, and the operating range of the rotating body is limited by the rotating body and a stationary body, without having any transmission structure interposed.
Patent Literature 1: Japanese Laid-Open Patent Application H8-330108
However, the following problems were encountered with the configuration disclosed in the above-mentioned publication.
Specifically, with this conventional configuration, since the operating range is limited by contact between the rotating body and the stationary body, without having any transmission structure interposed, there is the risk that the rotating body and the stationary body will come into direct contact, damaging one of them.
Meanwhile, with a configuration in which a rotating body is rotated with respect to a stationary body via a shaft or other such transmission structure, if the rotation range is restricted by having the transmission structure come into contact with the stationary body, the press-fitting portion on the rotating body side where the end of the transmission structure is fixed ends up being subjected to a load every time the limit position is reached in the operating range.
This has to be dealt with, for example, by selecting a very stiff material for the rotating body, or increasing the volume of the structure to strengthen the press-fitting portion, so limitations are encountered in terms of price and aesthetics.
It is an object of the present disclosure to provide an inexpensive rotary operation type switch that is sufficiently strong and with which the rotation range can be restricted by a simple configuration, without compromising aesthetics.
The rotary operation type switch disclosed herein comprises a holder, a rotary control, a shaft, a fixing portion, an outer wall part, and a stopper. The holder is provided as a stationary-side member. The rotary control rotates relative to the holder when a rotational force is imparted. The shaft transmits the rotational force imparted to the rotary control. The fixing portion is provided to the rotary control, and a first end of the shaft is inserted into it. The outer wall part forms the outer peripheral face of the fixing portion and is provided in a direction that is perpendicular to the rotational direction of the rotary control. The stopper is provided to the holder and comes into contact with the outer wall part and restricts the limit position of the rotation range when the rotary control and the shaft are rotated relative to the holder.
With the rotary operation type switch disclosed herein, there is provided an inexpensive rotary operation type switch that is sufficiently strong and with which the rotation range can be restricted by a simple configuration, without compromising aesthetics.
a to 10d are cross sections along the B-B line of the rotary operation type switch in
The rotary operation type switch pertaining to an embodiment of the present disclosure will be described through reference to
Remote Operation Panel 100
The rotary operation type switch in this embodiment is installed in a remote operation panel 100 for a shoulder-mounted camera, as a rotary operation type switch component 102a of an iris control lever 102.
As shown in
As shown in
The iris control lever 102 rotates, pivots, and moves up and down in the three directions indicated by the one-dot chain line in
Iris Control Lever 102
As shown in
As shown in
As shown in
Rotary Operation Type Switch Component 102a
As shown in
Cap 1
As shown in
As shown in
VR Switch 2
As shown in
Case 3
As shown in
Shaft 4
As shown in
One end 4a (first end) of the shaft 4 is fixed by press-fitting to a press-fitting portion (fixing portion) formed on part of the rotary control 6, as shown in
Furthermore, the other end 4b (second end) of the shaft 4 is connected to the cap 1 (see
Holder 5
The holder 5 is fixed to the cover 7, and as shown in
A stopper 5a, which restricts the limit position of the rotation range of the rotary control 6 by coming into contact with the outer wall part 6b on the rotary control 6 side (discussed in detail below), is provided on the rear face side (the −Z direction side shown in
The stopper 5a has a face disposed in a direction that intersects the rotational direction of the rotary control 6.
Rotary Control 6
As shown in
As shown in
The press-fitting portion 6a has an inside diameter that is slightly smaller than the outside diameter of the shaft 4, and holds the shaft 4 in a state in which the end 4a of the shaft 4 is inserted.
The outer wall part 6b forms the outer peripheral face of a thick-walled portion provided so as to surround the press-fitting portion 6a, and is provided in a direction that intersects the rotational direction of the rotary control. The outer wall part 6b restricts the limit position of the rotation range of the rotary control 6 by coming into contact with the stopper 5a formed on part of the holder 5 when the rotary control 6 is turned.
The rotary control 6 is also able to rotate along a substantially annular guide portion 7a formed on the cover 7 shown in
Cover 7
The cover 7 constitutes a base portion of the rotary operation type switch component 102a, and links the rotary operation type switch component 102a with the lever operation type switch component 102b. As shown in
The guide portion 7a engages with the inner peripheral face of the rotary control 6 and guides the rotary control 6 in the rotational direction.
Furthermore, as shown in
Rotation Range of Rotary Operation Type Switch Component 102a
As shown in
a to 10d are cross sections along the B-B line of the rotary operation type switch component 102a shown in
As shown in
Specifically, with the rotary operation type switch component 102a, as shown in
Then, when the rotary control 6 is turned from the first limit position shown in
As the rotary control 6 is turned further in the clockwise direction in the drawing, it reaches the other limit position (the second limit position) in the range over which the rotary control 6 can rotate. That is, as shown in
With the rotary operation type switch component 102a in this embodiment, because of the above configuration, the range over which the rotary control 6 can rotate is restricted when the outer wall part 6b on the rotary control 6 side and the stopper 5a on the holder 5 side come into contact.
Consequently, the limit position of the rotation range is restricted by having the outer wall part 6b, which constitutes the outer peripheral face of the press-fitting portion 6a to which the end 4a of the shaft 4 is press-fitted, and part of the holder 5 (the stopper 5a) come into contact with each other. Therefore, the load that is produced upon each arrival at the two ends in the rotation range of the rotary control 6 can be borne by the outer wall part 6b that constitutes the outer peripheral face of the press-fitting portion 6a.
The outer wall part 6b here is a portion that constitutes the outer peripheral face of the press-fitting portion 6a, and is relatively stiff, so the problem of strength is solved. Furthermore, the shaft 4 itself can be prevented from bearing the load that is produced upon each arrival at the limit positions in the rotation range.
As a result, the problem of strength can be solved by a simple configuration that does not compromise aesthetics, and a rotary operation type switch component 102a that can be manufactured inexpensively can be obtained.
The various members that make up of the above-mentioned rotary operation type switch component 102a may be formed as resin molded articles, or some of them may be metal parts.
Consequently, those parts that have relatively complex shapes, such as the rotary control 6 with its outer wall part 6b, for example, can be formed as molded articles using a resin with high stiffness, allowing a rotary operation type switch component 102a to be formed that solves the problem of strength inexpensively.
Other Embodiments
An embodiment of this disclosure was described above, but this disclosure is not limited to or by the above embodiment, and various modifications are possible without departing from the gist of the disclosure.
(A)
In the above embodiment, an example was given in which the end 4a of the shaft 4 was fixed to the press-fitting portion 6a of the rotary control 6, but the present disclosure is not limited to this.
How the end of the shaft is fixed is not limited to press-fitting, and may instead be, for example, to fix the end of the shaft to a member on the rotating side by latching, adhesive bonding, or some other such fixing method.
Here again the same effect will be obtained as with the configuration in the above embodiment.
(B)
In the above embodiment, an example was given in which the rotary operation type switch pertaining to this disclosure was installed in the remote operation panel 100 for use in a shoulder camera, but the present disclosure is not limited to this.
That is, this rotary operation type switch may be used in a shoulder camera or in any of various other kinds of device besides a camera.
The effect of the rotary operation type switch of this disclosure is that an inexpensive rotary operation type switch can be provided without compromising aesthetics, and therefore this rotary operation type switch can be broadly applied, not just to a panel used for adjusting image quality in a camera, but also as a rotary operation type switch installed in various other kinds of device.
Number | Date | Country | Kind |
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2013-37263 | Feb 2013 | JP | national |
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Number | Date | Country |
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8-330108 | Dec 1996 | JP |
Number | Date | Country | |
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20140238831 A1 | Aug 2014 | US |