JPS5826397Y2 - Level control knob marker device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a marker device for a rotary level control knob used in audio equipment such as a tape recorder.

Conventionally, the marker device of the rotary level control knob has a sixth
As shown in the figure, a marker knob shaft 22 was fixed to a panel 21 with screws 23, and a marker knob 24 was inserted and attached to the marker knob shaft 22.

However, this device requires the marker knob shaft 22, the marker knob shaft 22 must be fixed to the panel 21 with screws 23, and the marker knob shaft 22 and the marker knob 24
There were problems in terms of work, cost, and performance, such as the difficulty in giving a reliable lick feel in the area.

The purpose of the present invention is to eliminate such conventional drawbacks and to obtain a marker knob mounting device with a simple structure and a reliable lick feeling.An example of the present invention will be described below with reference to drawings. .

FIG. 1 is a front view of a front-operated cassette deck to which an embodiment of the present invention is applied.

FIG. 2 shows an enlarged sectional view taken along the line A-A in FIG. 1.

In Fig. 2, 1 is the housing, 2 is the bottom of the housing, 3 is a printed circuit board mounting boss integrally molded with the receiver bottom 2, 4 is a printed circuit board mounting screw, 5 is a printed circuit board, and 6 is a rotary type. A variable resistor is fixed to the printed circuit board 5 by soldering.

7 is the level control knob and the rotary variable resistor 6 shirt)
It is press-fitted and fixed to 6a.

A marker knob 8 has two locking pieces 8a.

9 is a washer, 10 is a knurling portion integrally formed on the housing 1, and 11 is a leaf spring.

FIG. 3 is an exploded perspective view of the main parts of the marker knob attachment device of the present invention, in which a leaf spring 11 is placed on the knurling part 10 integrally molded on the housing 1, and the locking part protrudes from the marker knob 8. The piece 8a protrudes from the hole 1a of the housing 1, and the locking piece 8a of the marker knob is aligned with the positioning hole 11b of the leaf spring 11 and inserted and fixed.

The marker knob 8 and the leaf spring 11 are reliably fixed to each other by the elastic force of the locking piece 8a of the marker knob 8.

Reference numeral 12 denotes a stopper that the protruding piece 11a of the plate spring 11 comes into contact with, and the protruding piece 11a is provided on a part of the outer periphery of the spring 11.
It is made to match the rotational movement range.

FIG. 4 atb is a front view and a side view of the spring 11, and as shown in the figure, a protrusion 11a and a diaphragm 11c are provided at two locations.

The protrusion 11a rotates on the surface of the knurled portion 10 when the marker is attached, and the aperture 11c rotates on the marker knob 8 due to its spring property when the protrusion 11d passes over the peak of the knurled portion.
The function is to give a click feeling to the image.

Figure 5 is a sectional view taken along line B-B in Figure 2, showing the marker knob 8.
This figure shows the operational relationship between the level control knob 7 and the level operation knob 7.

In the figure, reference numeral 8b denotes a protrusion protruding from the marker knob 8, which matches the protrusion 7a of the level operation knob 7 on the circumference.

To operate such a device, when the marker knob 8 is set at a certain position and the level operating knob 7 is rotated at that position, the protrusion 7a of the level operating knob 7 hits the protrusion 8b of the marker knob 8. If the level control knob 7 is further rotated at this point, it will rotate together with the marker knob 8 with a click feeling.

Therefore, when the operator wants to change the setting position indicated by the marker knob 8, he can do so by rotating the marker knob 8 together with the rotation of the level operation knob 7, and at this time, the level operation knob 7 also changes. It has a very good operating feel with a clicky feel.

Further, even if the operator turns the operating knob 7 to the level while watching the meter or the like, it is possible to sense that the set position of the marker knob 8 has been reached due to the contact between the protrusions 7a and 8a.

If the level control knob 8 is used to rotate the marker knob □8 as described above, the operator will feel a click as described above, and will immediately know if there is a mistake in the operation. It is convenient for

As described above, according to the marker knob mounting device of the present invention, members such as the shaft that were conventionally used can be removed, the structure and the installation work can be simplified, and a click can be felt when the marker knob is rotated. In particular, when the level control knob locks a part of the marker knob and rotates it together, the level control knob □ will give a click feeling, allowing you to actively adjust the position set by the marker knob. Time to change! The user can feel a click when the setting position is changed or the setting position is changed by mistake, making the operation very convenient for the operator.

[Brief explanation of the drawing]

Fig. 1 is a front view of a cassette deck which is an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a marker knob mounting device which is an embodiment of the invention. 4a and 4b are front and side views of the leaf spring, FIG. 5 is a sectional view taken along line B-B in FIG. 2, and FIG. 6 is a diagram of a conventional level control knob marker device. FIG. 1... Housing, 7... Level operation knob, 7a... Protrusion, 8... Marker knob, 8a... Locking piece. , 10... Knurled portion, 11... Leaf spring, 11a...
protrusion.

Claims (1)

[Scope of utility model registration request] a casing; a knurling part integrally provided with the casing and having a through hole in the center; a leaf spring having a protrusion that contacts and rotates on the knurling part; a level operating knob □, a through hole in the center through which a shaft is inserted, a locking piece inserted through the through hole of the knurled portion to hold the leaf spring, and a protrusion of the level operating knob. a marker knob having a protrusion that comes into contact with the knurling part, and a locking piece is inserted through the through hole of the knurling part to hold the leaf spring, thereby rotatably holding the marker knob with respect to the knurling part. ,
A shaft is inserted into the through hole of the marker knob, and a level control knob □ is attached to this shaft, and when the marker knob is rotated, a click is generated between the protrusion of the leaf spring and the knurled portion, which rotate together, and the level control knob is rotated. When the marker knob □ is rotated, the level control knob reaches the set position and the protrusion of the level control knob abuts and engages with the protrusion of the marker knob □, so that the click is generated only when the marker knob □ is rotated together. A marker device with a level control knob □.