JPH0757389A - Audio equipment - Google Patents

Abstract

PURPOSE:To prevent a loud sound at the time of starting operation in an audio equipment such as a tape player. CONSTITUTION:In an audio equipment (tape player) 1 separately provided with a manipulator 8 for adjusting sound pressure (a variable resistor knob) and an operation mechanism, a protrusion 11 is provided projectingly on the variable resistor knob 8 provided on a chassis 5. A lock piece 12 forming an engaging recessed part 13 with which the protrusion 11 engages is provided projectingly on the inner surface of a cabinet 3 being opposite to the chassis 5, the protrusion 11 is engaged with the engaging recessed part 13 of the lock piece 12 in the state that the variable resistor knob 8 is rotated to the prescribed position for adjusting the intermediate sound pressure and the variable resistor knob 8 is restrained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device, such as a portable tape player, having a sound pressure adjusting operator and an operation switch such as a play button separately.

[0002]

2. Description of the Related Art Conventionally, in a sound reproducing device such as a tape recorder and a stereo device, an operation (play) switch button, a power switch button and the like and a sound pressure adjusting operator are separately provided. Since the power-on operation and the sound pressure adjustment operation are performed independently of each other, a loud sound is output at the same time as the play operation, the power-on operation, etc. depending on the moving position of the sound pressure adjustment operator. Therefore, there is an audio device equipped with an automatic volume limiter system (hereinafter referred to as an AVL system) to electrically adjust the sound pressure.

[0003]

As described above, in the audio equipment provided with the AVL system, after using the AVL system, the AVL system is switched off in order to adjust to a desired sound pressure. After that, the sound pressure adjusting operator has to be adjusted, which requires two operations, which is troublesome.

In particular, when a portable tape player as an audio equipment is equipped with an AVL system, this portable tape player is often handled roughly, so that it is liable to cause a failure, has a problem in reliability, and is costly. Become high,
This hinders the cost reduction of the tape player.

The present invention has been made in view of the above points, and an object thereof is to provide an audio device having a simple structure and capable of mechanically preventing the generation of a loud sound during operation.

[0006]

In order to achieve the above object, the present invention is an audio equipment having a sound pressure adjusting operator and an operation switch separately, and the sound pressure adjusting operator is provided with a predetermined intermediate sound. It is configured to be locked at the pressure position.

To lock the sound pressure adjusting operator, an engaging portion is provided on either one of the sound pressure adjusting operator and the apparatus main body, and an engaged portion is provided on the other side, so that the engaging portion and the engaged portion are engaged with each other. This can be done by engaging the mating portion with each other.

Further, the engaging portion and the engaged portion may be provided at one place respectively.

[0009]

According to the present invention having such a configuration, in the acoustic device, the sound pressure adjusting operator is locked at a predetermined intermediate sound pressure position, so that the operation switch is operated unnecessarily large. Since no sound is output and the sound pressure can be adjusted in height based on the intermediate sound pressure position, the sound pressure can be quickly adjusted to any sound pressure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. This embodiment is a case where the present invention is applied to a portable tape player as an audio device.

In FIG. 1, reference numeral 1 denotes an entire portable tape player, and the exterior of the tape player 1 is composed of a center cabinet 2, a rear cabinet 3 and a lid 4 as a front cabinet.

The center cabinet 2 has a cassette loading section 2a in which a tape cassette is loaded and a recording / playback head is provided. A chassis 5 is fixed to the back side of the cassette loading section 2a. Operating mechanism 7
The circuit board and the like are fixed, and the play button 7a, rewind button 7b, fast forward button 7c, and stop button 7 of the operation mechanism 7 are fixed.
d is projected to the front side.

Further, the chassis 5 is provided with a sound pressure adjusting knob (hereinafter referred to as a volume knob) 8 as a sound pressure adjusting operator, and a part of the outer periphery thereof is projected from one side surface side of the center cabinet 2. There is.

The rear cabinet 3 constitutes a back cover of the cassette player, and is fixed to the center cabinet 2 side by a plurality of screw-in bosses 9 on the inner surface side. The lid 4 is pivotally attached to the center cabinet 2 so as to open and close the cassette loading portion, and a cassette holder (not shown) is provided on the inner surface side.

In this example, a substantially hemispherical projection 11 is provided on a part of the surface of the volume knob 8 provided on the chassis 5 in the center cabinet 2.
On the other hand, on the inner surface of the rear cabinet 3 facing the surface side of the volume knob 8, a substantially L-shaped elastic lock piece 12 corresponding to the movement trajectory of the protrusion 11 of the volume knob 8.
And an engaging recess 13 with which the protrusion 11 of the volume 8 is engaged is formed in the free end 12a having this elasticity, and the volume knob 8 is adjusted to the intermediate sound pressure in the engaging recess 13. The protrusion 11 is elastically engaged in the state of being rotated to the position.

When the projection 11 of the volume knob 8 and the engagement recess 13 of the lock piece 12 are not engaged, resistance does not act on the projection 11, so that the volume knob 8 can be lightly rotated as usual. However, when the intermediate sound pressure position is reached, due to the elasticity of the free end portion 12a of the lock piece 12, the protrusion 11 is engaged with the engagement recess 13 with a so-called click feeling and is in a lightly locked state.
It becomes possible to easily set and maintain the sound pressure in the intermediate state.

In this way, the volume knob 8 is locked like a click stop at the intermediate sound pressure position, so that the volume knob 8 is locked at the intermediate sound pressure position when the tape player 1 is not used (when not in operation). By this, it is possible to prevent the output of a loud sound at the same time as the operation of the tape player 1.

Since the intermediate sound pressure position of the volume knob 8 can be sensed by a click feeling during rotation, this position setting can be set by the feel of a finger rotating the volume knob 8 without visually confirming it. Even when the tape player 1 is stored in a bag, a pocket or the like, the volume knob 8 can be reliably set to the intermediate sound pressure position and held in the locked state.

Further, in order to adjust the volume knob 8 to a desired sound pressure state, the volume knob 8 is rotated in the high direction or the low direction from the intermediate sound pressure position, so that the desired sound pressure can be quickly adjusted. .

As described above, in the tape player 1 of the present embodiment, the volume knob 8 is mechanically locked, not electrically set to the intermediate sound pressure, so that the structure is simple. Moreover, since it has a large mechanical strength, it is hard to break even in a portable tape player which is often handled relatively roughly, and the reliability is improved, and the handling and operation are simplified.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, the volume knob 8 can be applied not only to the rotary knob but also to the sliding knob, and the lock piece 12 is not formed integrally with the rear cabinet 3 but is formed of a metal leaf spring. Then, it can be installed by insert molding when molding the rear cabinet 3 or by fixing it to the rear cabinet 3 by means such as riveting. In addition, the projection 11 and the engaging recess 13 are arranged in the opposite relationship, that is, the projection 11
May be provided on the lock piece 12, and the engagement recess 13 may be formed on the side of the volume knob 8.

A plurality of either the projections 11 or the engaging recesses 13 are formed at required intervals, and the volume knob 8 is formed.
It is possible to adjust the intermediate sound pressure step by step with the feel of a finger by locking the intermediate sound pressure in a clicked manner at a stepwise change position of the intermediate sound pressure.

In the case where a plurality of protrusions 11 are formed at required intervals in this way, small protrusions are provided before and after each protrusion, and the number of the small protrusions is increased in sequence to adjust the adjustment. You can easily know the position by touch.

The present invention is not limited to the tape player, but can be applied to various audio devices in which the power switch and the volume knob are separately installed.

[0026]

As described above, according to the present invention, the sound pressure adjusting knob is mechanically locked at a predetermined intermediate sound pressure position. Compared to the one that adjusts the pressure electrically, the structure is simple and it is hard to break down, the reliability is improved, and the intermediate sound pressure setting operation can be performed with the feel of a finger without visually confirming it. For small portable devices, it can be easily operated while it is stored in a bag, pocket, etc., and the sound pressure adjustment knob is locked at the intermediate sound pressure position, so that the desired sound pressure can be adjusted immediately. It has the effect of being able to listen and always be comfortable.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of an example tape player to which the present invention is applied.

FIG. 2 is an exploded perspective view of the tape player.

FIG. 3 is a front perspective view of the tape player.

[Explanation of symbols]

 1 Tape Player 2 Center Cabinet 3 Rear Cabinet 5 Chassis 7 Operating Mechanism 8 Sound Pressure Control Operator (Volume Knob) 11 Projection 12 Lock Piece 13 Engagement Recess

Claims (3)

[Claims] 1. An audio device having a sound pressure adjusting operator and an operation switch separately, wherein the sound pressure adjusting operator is locked at a predetermined intermediate sound pressure position. Audio equipment. 2. An engaging portion is provided on any one of the sound pressure adjusting operator and the device body, and an engaged portion is provided on the other, so that the engaging portion and the engaged portion are engaged with each other. The acoustic device according to claim 1, wherein the sound pressure adjusting operator is locked thereby. 3. The sound pressure adjusting manipulator and the device body are provided with an engaging portion on one side and an engaged portion on the other side at one location, respectively. Audio equipment.