JPH06259853A - Cassette tape recorder - Google Patents

Abstract

PURPOSE:To prevent an operating knob from shifting into an open position by mistake when the operating knob is to be returned from a hold position to a neutral position. CONSTITUTION:The cassette tape recorder is equipped with a switch of slide operation with the operating knob 14, and this switch has three positions, i.e., the open position for opening a lid body by unloading a tape, the hold position for making an operating button for operating a tape driving mechanism unworkable even when the button is operated and the neutral position between the open position and the hold position. Then, the operating knob 14 is provided on a knob main body 15 to be connected with the switch, and is composed of a pressing operator 16 which is functionable a stopper against the movement of this knob main body 15 into the open position. Then, at the time of moving operation of the knob main body 15 into the open position, the pressing operator 16 is pressed to be released from its function as the stopper, and this state is maintained as the knob main body 15 is moved into the open position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette tape recorder, and more particularly to a structure of an operating knob for operating a switch for opening a lid.

[0002]

2. Description of the Related Art FIG. 1 shows the appearance of a cassette tape recorder for so-called DAT (digital audio tape). This cassette tape recorder 1 comprises a tape recorder main body 2 and a lid 3 rotatably connected to the tape recorder main body 2, and the lid 3 opens and closes a cassette mounting portion 4 of the tape recorder main body 2. It Reference numeral 5 is a hub drive shaft provided in the cassette mounting portion 4.

Reference numeral 6 is a cassette holder for holding a tape cassette, and the cassette holder 6 is constructed so as to move up and down in conjunction with the opening / closing rotation operation of the lid body 3, that is, the lid body 3 is in an open state (as shown in the drawing). State), the cassette holder 6 is in a position raised relative to the cassette mounting portion 4 so that the tape cassette can be inserted / removed. When the lid 3 is closed, the cassette holder 6 is attached to the cassette mounting portion. It is designed to descend to the position where it is attached to.

When the lid 3 is completely closed,
The lid body 3 is configured to be locked by engaging with a lock piece 7 provided on the tape recorder body 2 side.

An operating portion 8 for driving the tape is provided on the upper surface of the lid body 3, that is, 8a is a play button, 8b is a fast forward (FF) button, and 8c is a rewind button (REW). ) Button, 8d is a stop (STOP) button, and 8e is a record (REC) button.

FIG. 2 shows the structure of a mechanical system inside the cassette tape recorder 1, in which 10 is a control section composed of a microcomputer, and 11 is a control section.
Is a tape drive mechanism unit (including a tape loading mechanism) for driving the tape of the tape cassette mounted in the cassette mounting unit, and any one of the buttons 8a pressed in the operation unit 8
8d according to the signal from the control unit 10 in the tape drive mechanism unit 11 the tape running operation (PLAY, F
F, REW, STOP) is performed. In this cassette tape recorder 1, the lid 3 is closed and the tape cassette is mounted in the cassette mounting portion, and at the same time, the tape driving mechanism 11 performs the tape loading operation so that the tape can be immediately moved. Has become.

Numeral 12 is an open mechanism portion for electrically unlocking the lid body 3 in the closed state to open the lid body 3. The lid body open mechanism portion is operated by a switch (slide switch) 13. The switch 13 is slid by an operation knob 14 provided on the surface of the tape recorder main body 2 in FIG. 1. When the switch 13 is moved to the open (OPEN) position, the control unit 10 opens the lid according to the operation. When a signal is sent to the mechanism section 12, the lock piece 7 shown in FIG. 1 is electrically operated in the unlocking direction so that the lid body 3 is released.
Is opened.

When the switch 13 is moved to the open position, the tape drive mechanism 11 performs the tape unloading operation, and after the unloading operation is completed, the lid opening mechanism 12 is opened.
At, the lid 3 is unlocked and the lid 3 is opened. Note that the tape is unloaded by the switch 13 and the lid 3 is opened only when the tape is stopped (STOP), that is, the switch 13 is set to the open position while the tape is running (PLAY, FF, REW). However, this does not work (the control unit 10 does not accept this).

In this way, the switch 13 for unloading the tape and opening the lid 3 also serves as a hold switch for preventing erroneous operation of the operating portion 8, that is, the switch 13 is open (OPEN). There are three positions: a position, a hold (HOLD) position, and a neutral position (centering position) between the open position and the hold position. When the switch 13 is moved to the hold position, the operation unit 8 Which button 8a
Even if .about.8e is pressed, it does not work (the control unit 10 does not accept this), so that the button of the operation unit 8 is accidentally pressed and unexpected operation is not performed.

The switch 13 is biased so as to return to the neutral position with respect to the moving operation direction of the open position, and has a structure to stop in that state at the hold position.

[0011]

In the cassette tape recorder 1 as described above, the switch 13 is slid by the operation knob 14 provided on the surface of the tape recorder body 2 as described above. When returning the operating knob 14 from the hold position to the neutral position, the operating knob 14 may be erroneously moved to the open position by its momentum.

When the switch enters the open position as described above, the tape is unloaded and the lid is opened as described above. Therefore, in order to enter the PLAY state from here, the lid is closed again and the tape is loaded. You have to wait for it to be done, and there is a lot of time loss, and there is also a large electrical loss. The present invention has been made for the purpose of solving such a problem.

[0013]

To achieve the above object, the present invention comprises a switch which is slid by an operating knob, which switch has an open position in which a tape is unloaded to open a lid. In a cassette tape recorder having three positions, a hold position that does not work even if an operation button that operates the tape drive mechanism is operated, and a neutral position between the open position and the hold position. This is so that the operating knob does not enter the open position directly from the hold position. In this case, the operating knob is composed of a knob main body connected to the switch and a pressing operator provided on the knob main body and functioning as a stopper against movement of the knob main body to the open position. When moving the knob main body to the open position, the push operation element is pressed to release the stopper function, and the knob main body is moved to the open position while maintaining this state.

[0014]

According to the above-mentioned structure, when the operating knob is returned from the hold position to the neutral position, it is prevented from being accidentally moved to the open position, and therefore, the time loss during the operation as in the conventional operation and the time loss. There is no electrical loss.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. 3 and 4, and portions corresponding to those of the conventional example shown in FIG.

In the cassette tape recorder 1 of this embodiment, the tape is unloaded and the lid 3 is opened to open (OPEN) position, and all the buttons 8a to 8 of the operation unit 8 are opened.
Hold position to prevent e from working,
A special structure is adopted for the structure of the operating knob 14 for operating the switch having the three positions of the neutral position between the open position and the holding position, and the operating knob 1
When returning 4 from the hold position to the neutral position, care is taken not to enter the open position carelessly.

The structure of the operating knob 14 will be described in detail with reference to FIG. 4. The operating knob 14 is composed of two parts, a knob body 15 and a pressing operator 16.

The knob body 15 is the tape recorder body 2
It is slidably provided along the cabinet 2a of FIG. 2 and is connected to a switch (switch 13 shown in FIG. 2) arranged inside the tape recorder body 2 even if not shown, that is, this knob. The switch is operated by moving the main body 15. It should be noted that both ends of the knob main body 15 are formed so as to be easily hooked with a finger during the moving operation.

On the other hand, the pressing operator 16 is fitted and supported in a hole 17 formed in the central portion of the knob main body 15 so as to be retractable and movable in a direction orthogonal to the moving operation direction of the knob main body 15. Thus, the pressing operation element 16 is formed with a stopper convex portion 16a projecting toward the open position on the back side of the knob main body 15, and the tip end surface of the stopper convex portion 16a is aligned with the cabinet 2a as described later. By hitting the end surface 18a of the formed hole, this serves as a stopper.

Reference numeral 19 denotes a mounting plate for supporting the pressing operation element 16. The mounting plate 19 is fixed to the knob body 15 though not shown, and the pressing operation element 16 is provided in the support hole 19a of the mounting plate 19. The shaft pillar portion 16b is inserted and supported. A compression coil spring 20 is interposed between the mounting plate 19 and the pressing operator 16, and the compression coil spring 2
With the force of 0, the pressing operator 16 is biased so that its head always projects from the knob main body 15 and the tip end surface of the stopper protrusion 16a faces the end surface 18a of the hole of the cabinet 2a.

The operation of the operation knob 14 thus constructed will be described. First, when the operation knob 14 is moved from the neutral position shown in FIG. 4A to the hold position,
By moving the knob main body 15 as it is toward the hold position, the operation knob 14 enters the hold position without any trouble as shown in FIG. 4B.

On the other hand, when the operation knob 14 is moved from the neutral position shown in FIG. 4A to the open position, if the operator tries to move the knob body 15 toward the open position as it is, the stopper projection 16a of the pressing operator 16 is pushed. When the tip surface hits the end surface 18a of the hole of the cabinet 2a, this functions as a stopper, which restricts the movement of the operating knob 14 to the open position.

Therefore, in this case, the head of the pressing operator 16 is pressed to push the stopper protrusion 16a into the cabinet 2a.
4C by releasing it in the thickness direction of the hole to make it not correspond to the end face 18a of the hole, thereby canceling its function as a stopper, and moving the knob body 15 toward the open position while maintaining this state. The operating knob 14 enters the open position as shown in FIG.

When attempting to move the knob main body 15 from the neutral position to the hold position while pushing the pushing operation element 16, a part 16c of the head portion of the pushing operation element 16 is pushed.
By hitting the end surface 18b of the hole of the cabinet 2a, the movement of the operating knob 14 to the hold position is restricted.

As described above, in the structure of the operating knob 14 of this embodiment, the knob main body 15 cannot be directly put into the open position from the hold position, and when the knob main body 15 is put in the open position, the pressing operator 16 is always pushed to make the stopper. Since it is necessary to move the knob body 15 while releasing the function as described above, the operation knob 14 will not be inadvertently moved to the open position when returning from the hold position to the neutral position.

[0026]

As described above, the present invention is provided with the switch which is slid by the operating knob, and which operates the tape drive mechanism and the open position where the tape is unloaded to open the lid. A hold position that prevents the operation button from operating and a neutral position between the open position and the hold position.
In a cassette tape recorder that has a position, the operating knob was prevented from directly entering the open position from the hold position.Therefore, when returning the operating knob from the hold position to the neutral position, it should be accidentally moved to the open position. As a result, it is possible to provide a cassette tape recorder that is easy for the user to use without causing time loss and electrical loss during operation as in the conventional case.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional cassette tape recorder.

FIG. 2 is a block diagram of a configuration of a mechanical system of a cassette tape recorder.

FIG. 3 is a perspective view of the cassette tape recorder of the embodiment.

FIG. 4 is a cross-sectional view of a main part (operation knob) of the embodiment, in which A is in a neutral position, B is in a hold position, and C is in an open position.

[Explanation of symbols]

 13 switch 14 operation knob 15 knob main body 16 pressing operator 16a stopper protrusion

Claims (2)

[Claims] 1. A switch which is slid by a control knob is provided, and this switch does not work even if an open position for opening a lid by unloading a tape and an operation button for operating a tape drive mechanism are operated. In the cassette tape recorder having three positions, that is, the hold position and the neutral position between the open position and the hold position, the operation knob is prevented from directly entering the open position from the hold position. A cassette tape recorder characterized in that 2. The operating knob includes a knob main body connected to the switch, and a pressing operator provided on the knob main body and functioning as a stopper against movement of the knob main body to an open position. When moving the knob body to the open position, the pressing operation element is pressed to release the stopper function, and while maintaining this state, the knob body is moved to the open position. The cassette tape recorder according to claim 1.