JPH057621Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is used for example in audio equipment, etc., to control the overall volume by linking the left and right volumes of a stereo, and to control the left and right volumes independently. The present invention relates to an interlocking operation device that enables adjustment of the balance of volume.

(Prior art) In audio equipment amplifiers, etc., it is necessary not only to adjust the left and right volumes of the stereo as a whole, but also to adjust the balance between the left and right volumes, so the following method has been adopted. There is.

A system in which the left and right volumes are adjusted overall by rotating a single volume knob, and the balance between the left and right volumes is adjusted by rotating a separate balance knob.

A system in which the left and right volumes are adjusted overall by rotating two coaxial volume knobs in conjunction with each other, and the balance between the left and right volumes is adjusted by rotating them independently.

Two volume knobs provided separately on the left and right,
A system in which the left and right volumes are adjusted overall by rotating them in conjunction, and the balance between the left and right volumes is adjusted by rotating them independently.

Among these methods, the method in which the left and right volume balance is adjusted by rotating the volume knob and a separate balance knob, and the method in which the two volume knobs are installed on the same axis are two methods that prevent crosstalk (signal of one side of stereo). (mixing with the other signal), this is not acoustically preferable, but a system that allows the left and right volumes to be separated and independent is desirable and is used in high-end products and separate amplifiers.

By the way, in the case of this method, the operation axes of the two separate and independent volumes on the left and right are
The four gears are connected via one friction clutch member placed between the two middle gears, and when one of the pair of operating shafts is rotated,
Normally, the other one is rotated in conjunction with the other, and by this,
By operating one of the operating shafts, the left and right volumes can be adjusted overall, and when one of the pair of operating shafts is prevented from rotating, the friction clutch member is slid. The other can be rotated independently, thereby
An interlocking operation device is used to adjust the volume balance.

(Problems to be solved by the invention) As mentioned above, the conventional interlocking operation devices used in audio equipment, etc., are designed to perform linked operation and independent operation of the operation shafts of a pair of operation parts. ,
It uses four gears and one friction clutch member placed between the two middle gears,
Due to the large number of gears, it is not possible to reduce costs, and the load from independent operation, that is, blocking rotation of one and rotating the other independently, is concentrated on one friction clutch member, resulting in poor durability. I have a problem with sexuality.

The present invention was developed in view of these points, and aims to reduce the cost and improve the durability of an interlocking operating device that performs interlocking and independent operation of the operating shafts of a pair of operating parts. This is the purpose.

[Structure of the idea]

(Means for Solving the Problems) In the present invention, when either one of the operating shafts 4, 5 of a pair of operating parts 2, 3, which are arranged separately and independently, is rotated, the other one is always interlocked. The invention relates to an interlocking operating device that can rotate and, when one of the pair of operating shafts 4, 5 is blocked, rotate the other independently.
Disks 6 and 7 are integrally provided on each of the operating shafts 4 and 5, and a gear 1 is provided on each of the operating shafts 4 and 5.
0 and 11 are rotatably provided, and each of these operating shafts 4 and 5
Discs 6, 7 and gear 10 in each of
Friction clutch members 12 and 13 are sandwiched between 11, and an interlocking gear 22 is arranged between gears 10 and 11 of each of the operating shafts 4 and 5.

(Function) In the interlocking operating device of the present invention, when either one of the operating shafts 4, 5 of the pair of operating parts 2, 3 is rotated in a normal state, the friction clutch members 12, 13 engage the discs 6, 7. Due to the connection of the gears 10 and 11, the other of the operating shafts 4 and 5 rotates in conjunction with each other, and when one of the pair of operating shafts 4 and 5 is prevented from rotating, the other of the operating shafts 4 and 5 rotates. By sliding the friction clutch members 12, 13 on the other side, the other of the operating shafts 4, 5 can be rotated independently.

(Embodiment) An embodiment of the interlocking operation device of the present invention will be described with reference to the drawings.

Figure 1 shows a part of a power amplifier for audio equipment. In this figure, 1 is a metal board, and a pair of volumes 2 and 3 as operating parts are mounted on this board 1 at a distance. , Volumes 2 and 3 are used to independently adjust the left and right volumes of the stereo.

The operation shafts 4 and 5 of the volumes 2 and 3 are connected to metal cylinders 8 (only the right one is shown) into which disk-shaped disks 6 and 7 made of synthetic resin are press-fitted. Synthetic resin gears 10 and 11 are rotatably provided on the outside of the boss portion of each of the disks 6 and 7 on the board 1 side, and each of the operation shafts 4 and Felt rings 12, 13 as friction clutch members are disposed between the side surfaces of the disks 6, 7 and the side surfaces of the gears 10, 11 in each of the gears 5,
As shown in FIG. 2, the elasticity of the wave washer 14 is improved by fitting the wave washer 14 into the boss portions of the disks 6 and 7, press-fitting the CS type retaining ring 15, and compressing the wave washer 14. Therefore, the felt rings 12 and 13 are the gears 10 and 11 of the discs 6 and 7.
It is held elastically between the two.

Note that operating knobs 16 and 17 are integrally attached to the tips of the operating shafts 4 and 5 of the volumes 2 and 3, respectively.

Further, a metal stepped support shaft 21 is fixed to the substrate 1 by caulking, located between the operation shafts 4 and 5 of the volumes 2 and 3.
An interlocking gear 22 made of synthetic resin is rotatably engaged via a metal cylindrical member 23 press-fitted into the inner side of the interlocking gear 22, and an E-type retaining ring 24 is fitted to the support shaft 21, thereby interlocking. A gear 22 is held on the support shaft 21, and this interlocking gear 22 is connected to the left and right operating shafts 4,
It meshes with gears 10 and 11 of No. 5.

With this configuration, when adjusting the overall left and right volume of the stereo, when either the left or right operation knobs 16, 17 are rotated, the disks 6, 7 holding the felt rings 12, 13 are turned.
As a result, the gears 10 and 11 rotate integrally via the felt rings 12 and 13, so that the operating shafts 4 and 5 of both the left and right volumes 2 and 3 are linked and rotated in the same direction, and the left and right volumes are adjusted. Global adjustments can be made.

That is, when the left operating knob 16 is rotated, the disc 6 is rotated via the operating shaft 4, and the rotation of the disc 6 is transmitted to the gear 10 via the felt ring 12, and from this left gear 10. Rotation is transmitted to the right gear 11 via the interlocking gear 22, rotation of the right gear 11 is transmitted to the disc 7 via the felt ring 13, and rotation of the disc 7 is transmitted to the right operating shaft 5. As a result, the operation shafts 4 and 5 of both the left and right volumes 2 and 3 are linked together and rotated in the same direction, allowing overall adjustment of the left and right volumes.Similarly, the right operation knob 17
When the disk 7 is rotated, the disk 7 rotates via the operating shaft 5, and this rotation of the disk 7 causes the felt ring 1 to rotate.
3 to gear 11, and this right gear 1
1 to the left gear 10 via the interlocking gear 22, the rotation of the left gear 10 is transmitted to the disk 6 via the felt ring 12, and the rotation of the disk 6 is transmitted to the left operating shaft 4. As a result, the operation axes 4 and 5 of both left and right volumes 2 and 3
The two are linked and rotate in the same direction, allowing overall adjustment of left and right volume.

In addition, to adjust the balance between the left and right volume of the stereo, with the operation knobs 16 and 17 of either the left and right prevented from rotating, turn the operation knobs 16 and 17 of the other side,
This can be done by rotating the parts 17 independently.

In other words, either the left or right operation knob 1
If you try to turn the other operating knob 16, 17 while the rotation of the knobs 6, 17 is blocked, the felt rings 12, 13 will hit the disks 6, 7, the gear 10,
11, thereby making it possible to rotate the other operating knobs 16, 17 while blocking the rotation of either the left or right operating knobs 16, 17. volume 2,3
can be operated independently to adjust the balance of left and right volume.

Note that in a good assembled state, the sliding resistance of the left and right felt rings 12 and 13 is approximately equal, so for example, when the left operating knob 16 is prevented from rotating, the right operating knob 17 is When trying to rotate, in the relationship between the disc 7 of the right operating shaft 5 and the gear 11,
Since the gear 11 is subjected to resistance related to the interlocking gear 22 in addition to the resistance related to the left operating shaft 4, the felt ring 13 between the disk 7 and the gear 11 will slip, causing the left and right gears 10, 11 and the intermediate interlocking gear 22 do not rotate, and only the right operating shaft 5 and the disk 7 directly connected thereto rotate. If an attempt is made to turn the left operating knob 16 while the rotation of the operating knob 17 is blocked, the gear 10 Since the resistance related to the interlocking gear 22 is added to the resistance related to the right operating shaft 5, the felt ring 12 between the disk 6 and the gear 10 will slip, causing the left and right gear 1 to slip.
All of the interlocking gears 22, 0, 11 and intermediate, do not rotate, and only the left operating shaft 4 and the disk 6 directly connected thereto rotate.

In addition, in this embodiment, the left and right gears 10, 11
The same gear is used for the interlocking gear 22 and the intermediate interlocking gear 22, so that parts can be made common.

[Effect of idea]

As described above, according to the present invention, when one of the operating shafts of a pair of operating parts is rotated in a normal state, the other operating shaft is rotated due to the connection between the disk and the gear by the friction clutch member. When the rotation of one of the pair of operating shafts is blocked, the friction clutch member on the other side of the operating shaft slips, allowing the other operating shaft to rotate independently. Therefore, both coupled and independent operation of the pair of operating shafts is possible, and in this case, since the load is distributed between the two friction clutch members, the friction clutch member There is little wear and tear, and only three gears are required, which reduces costs.Furthermore, when assembled in good condition, the gears do not rotate when the pair of operating shafts are operated independently, so the load is reduced. It's smaller and there's less gear wear.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a part of a power amplifier for audio equipment showing an embodiment of the interlocking operation device of the present invention;
The figure is an exploded view of a part of it. 2, 3...Volume as an operating part, 4,
5... Operation axis, 6, 7... Disc, 10, 11
... Gear, 12, 13 ... Felt ring as a friction clutch member, 22 ... Interlocking gear.

Claims (1)

[Claims for Utility Model Registration] When one of the operating shafts of a pair of operating parts arranged separately and independently is rotated, the other one always rotates in conjunction with the rotation of the operating shaft of the pair of operating parts. The interlocking operation device is capable of rotating the other independently when the rotation of one is blocked, and a disk is integrally provided on each of the operation shafts, and a gear is provided on each of the operation shafts. An interlocking operation device which is rotatably provided, a friction clutch member is sandwiched between a disk and a gear on each of the operation shafts, and an interlocking gear is disposed between the gears on each of the operation shafts.