JPH0726741Y2 - Control device for operating knob - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention converts the rotational movement of an operation shaft for rotation adjustment provided in an electric device or an electronic device into a slide operation and operates the slide operation knob. In addition, the present invention relates to a control device for an operation knob that is locked at an appropriate position.

[Conventional technology]

Variable resistors and switches are used in electric devices, electronic devices, etc., and the set position is usually displayed. When the characteristics of the device in which the variable resistance or switch is used, the design matching with other variable resistances or switches, or the matching due to the appearance requirements, or the operability that matches the function of the variable resistance or switch is required. However, there are cases where it is necessary to use other types of variable resistors due to space constraints. In such a case, it becomes necessary to convert the operability and display into the required type.

Further, conventionally, an operation knob for rotation adjustment or an operation knob for slide adjustment has been used in radios for general household use, televisions, factories, parks, stations, and other loudspeaker amplifiers, as well as other radars and electronic calculators. However, the operating knob could easily turn or move due to the carelessness of the operator or the surrounding environment.

That is, for example, when the coordinator is a technician and the operator (user) of the apparatus is a general consumer such as an audio device or a color television, the operator frequently changes. However, these devices are usually adjusted to the best condition when in use, but often the operator makes unnecessary adjustments, inadvertent contact, or vibration, etc. I had to readjust because there was a gap.

At this time, the proper position may be lost due to excessive adjustment operations, or the volume may be disturbed by loud sounds, which not only complicates the handling operation but also the time loss. Therefore, I was particularly worried about use in an emergency.

In order to solve these problems, the applicant of the present invention
We have already devised a cover mounting structure for the operating knob as shown in Japanese Patent No. 61-37050. That is, in the device described in this publication, an opening having a diameter larger than the diameter of the knob is provided around the knob provided on the operation panel, and an elastic leg having an outward hook-shaped portion at the tip is provided at the opening. The hook-shaped part of the cup-shaped knob cover thus obtained is fitted, and after the operation knob is adjusted to an appropriate position, the knob cover is detachably attached to the operation panel.

[Problems to be solved by the device]

In the structure described in Japanese Utility Model Publication No. 61-37050, when the knob cover comes off due to carelessness of the user,
Since the operation knob is not locked, there was a problem that it could easily turn.

The present invention has been made in view of the above points, and converts the rotational movement of the operation shaft into the sliding movement, and once the position of the operation knob is determined to be the most appropriate state, the adjuster fixes the position. It is an object of the present invention to provide a lock device for an operation knob that can be surely locked and that can be unlocked to change the adjustment position if necessary.

[Means for Solving the Problems]

In order to achieve the above object, the control device of the operating knob of the present invention will be described with reference to FIGS. 1 to 3. The operating shaft 14 of the variable resistor 12 mounted on the panel chassis 10 will be described below.
And a gear 18 having a shaft through hole 16 having the same cross-sectional shape as the operation shaft 14 into which the operation shaft 14 is fitted, a rack 20, a long hole 22 and a slide operation knob mounting hole that mesh with the gear 18. A rack member 26 provided with 24, a slide operation knob 28 that is fitted or screwed into the slide operation knob attachment hole 24, and is disposed between the slide operation knob 28 and the rack member 26. A panel 34 having an elongated hole 30 through which the knob 28 slides and an opening 32 for inserting a locking screw
And a locking screw 36 that passes through the opening 32 of the panel 34 and the long hole 22 of the rack member 26, and a female screw portion 38 that is arranged between the panel chassis 10 and the rack member 26 and that engages the locking screw 36. Fixing member 40 with
It is characterized by including and.

[Action]

The slide operation knob 28 is slid in the long hole 30 and the gear 18 is rotated through the rack 20 to adjust the operation shaft 14 to the most appropriate position.

At this proper position, the locking screw 36 is attached to the opening 32 of the panel 34,
The operation shaft 14 is locked by inserting the long hole 22 of the rack member 26 and screwing the tip of the locking screw 36 into the female screw portion 38 of the fixing member 40.

When readjustment becomes necessary, the lock screw 36 is loosened to release the lock.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the shapes of the components described in this embodiment, their relative arrangements, etc., are not intended to limit the scope of the present invention to only those unless otherwise specified, and are merely illustrative examples. Only.

FIG. 1 is an exploded perspective view showing an embodiment of a control device of an operating knob of the present invention, FIG. 2 is an explanatory plan view of the same assembly, and FIG. 3 is a front explanatory view of a main part in FIG.

Reference numeral 10 denotes a panel chassis of an electric device or an electronic device, and a variable resistor 12 and its operation shaft 14 are attached to the panel chassis 10. This variable resistor is of a type in which the operating shaft 14 is rotated and adjusted within a range of an angle of less than 360 °. A rotary type rotating only in one direction cannot be applied.

Reference numeral 18 is a gear into which the operating shaft 14 is fitted, and has a shaft through hole 16 having the same shape as the sectional shape of the operating shaft 14.

A rack 20 of a rack member 26 meshes with the gear 18, and the rack member 26 has a long hole 22 through which a locking screw 36 is inserted and a slide operation knob mounting hole 24.

Then, the slide operation knob 28 is attached by being fitted or screwed into the slide operation knob attachment hole 24. A panel 34 is provided between the slide operation knob 28 and the rack member 26.
Are placed. This panel 34 has a slide control knob 28.
It has an elongated hole 30 for sliding and an opening 32 for inserting a locking screw 36. The locking screw 36 is attached to the panel 34
Through the opening 32 of the rack member 26 and the long hole 22 of the rack member 26.
It is screwed into the female threaded portion 38 of 40.

When the slide operation knob 28 is moved to the left and right, the gear 18 meshed with the rack 20 and the operation shaft 14 fitted in the shaft through hole 16 of the gear 18 are integrally and rotated together. When it is desired to fix the slide operation knob 28 at an arbitrary adjustment position, it is fixed (locked) by tightening the lock screw 36.

When the movable range of the variable resistance is set to 300 °, there is the following relationship between the stroke 1 of the slide display and the pitch circle radius r of the gear 18.
Can be set. 42 is a slide scale.

Although the D-cut type operating shaft 14 is shown in FIGS. 1 to 3, it may be a serration type (vertical groove type) operating shaft.

[Effect of the Invention] Since the present invention is configured as described above, it has the following effects.

(1) Since it is possible to convert the rotational movement and the rotational display of the operation axis into the sliding movement and the sliding display, it is suitable for use when the device is subject to design restrictions.

(2) It can be fixed (locked) at an arbitrary adjustment position, its operation is simple, and there is very little possibility that the setting of the operation axis will change due to carelessness.

(3) Since an arbitrary slide stroke can be set, it is effective for changing when the movable range of the variable resistor commercially available in one group is not suitable.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a control device for an operating knob of the present invention, FIG. 2 is an explanatory plan view of the same assembly, and FIG. 3 is a front explanatory view of a main part in FIG. 10 …… Panel chassis, 12 …… Variable resistance, 14 …… Operating shaft, 16 …… Shaft through hole, 18 …… Gear, 20 …… Rack, 22…
… Oval hole, 24 …… Slide operation knob mounting hole, 26 …… Rack member, 28 …… Slide operation knob, 30 …… Oval hole, 32
…… Aperture, 34 …… Panel, 36 …… Locking screw, 38 ……
Female thread, 40 ... Fixing member, 42 ... Slide scale

Claims (1)

[Scope of utility model registration request] 1. An operating shaft (14) of a variable resistor (12) mounted on a panel chassis (10) and a sectional shape of the operating shaft (14) with which the operating shaft (14) is fitted. A rack member (26) having a gear (18) having a shaft through hole (16), a rack (20) meshing with the gear (18), an elongated hole (22) and a slide operation knob mounting hole (24). And a slide operation knob (28) that is fitted or screwed into the slide operation knob attachment hole (24) and is arranged between the slide operation knob (28) and the rack member (26). The long hole (30) through which the operating knob (28) slides and the opening (3) for inserting the locking screw.
2), a panel (34), a locking screw (36) for inserting the opening (32) of the panel (34) and the slot (22) of the rack member (26), and a panel chassis (10). A control device for an operating knob, comprising: a fixing member (40) arranged between the rack member (26) and a female screw portion (38) with which a locking screw (36) is screwed.