JPS6112607Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder in which a drive section for driving a magnetic tape in a tape cassette can be automatically loaded into the apparatus main body.

In conventional tape recorders, the cassette holder is pushed forward when the eject button is pressed, and the tape cassette is loaded into the cassette holder and then pushed in by hand to load the tape cassette into the playing position. It is true.

However, since such conventional tape recorders have a structure in which the cassette holder protrudes forward, the height of the front panel needs to be greater than either the vertical or horizontal width of the cassette holder, which reduces the overall height of the tape recorder. It becomes something big. Therefore, a tape cassette loading structure using such a cassette holder cannot be adopted in a type of tape recorder that is intended to be thin.

In view of these conventional problems, the present invention is designed so that the tape cassette drive system into which the tape cassette is attached can be pulled out in a horizontal direction with respect to the main body of the apparatus, and the tape cassette is loaded into the drive system, and the drive system for the tape cassette is loaded into the drive system. The present invention provides a new tape recorder configured to load the above-mentioned drive unit automatically pulled back into the main body of the device. By using a limiter, even if an overload is applied to the drive unit,
To provide a motor and a feed screw that can operate smoothly.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view of the tape recorder drive unit according to the present invention set in the main body of the device;
The figure is a perspective view of the drive unit automatically pulled out horizontally from the main body of the device. 1 and 2, reference numeral 1 denotes the main body of a tape recorder, and the main body 1 is provided with a signal circuit section centered on a signal processing circuit and a drive section for a tape cassette that moves horizontally. There is. 2 is a fixed panel attached to the front of the main unit 1, which includes a power switch 3, a knob 4 for adjusting the recording level, jack terminals 5 and 6 for the microphone and headphone, and controls such as the peak level of the signal and the direction of the tape. A display section 7 and the like are attached to the barrel.
Reference numeral 8 denotes a movable panel that appears and retracts from the apparatus main body 1 together with the mechanical deck of the drive system, which includes a touch switch 9 for mode selection of the tape recorder related to the drive system, a switch 10 for commanding the ejection and retraction operation, and a memory and program. A switch 11 for specifying the following information, a display section 12 for displaying the remaining amount of tape, Dolby circuit operation, etc. are provided, and these constitute a drive section A with a built-in mechanical deck.

Next, this drive section A will be described.

3 and 4 are a plan view and a front sectional view showing the details thereof. Reference numeral 13 denotes a motor attached to the rear of the stationary chassis of the device main body 1, and a pulley 15 is attached to this drive shaft 14. Brackets 16 and 17 are respectively attached to the front and rear of the chassis, and a rod-shaped feed screw 18 is rotatably supported on these brackets. A boss member 20 having a friction member 19 such as felt on the flange surface is attached to the rear part of the feed screw 18 by a stopper member 21 such as a screw, and a pulley 22 made of a rotatable lubricant is attached to the boss member 20. is installed. The pulley 22 is pressed against the friction member 19 with a predetermined force by a coil spring 24 interposed between the pulley 22 and a spring receiving plate 23 attached to the end of the screw 18. Furthermore, a belt 15a is stretched between this pulley 22 and the pulley 15.
Reference numerals 25 and 26 denote guide frames that horizontally support the drive section A of the tape recorder, and the magnetic head 28, pinch roller 29, and capstan 30 are mounted on the upper support plate 27 that encloses the capstan motor of the drive section A.
A tape cassette loading section 31 comprising:
A is provided. As shown in FIG. 5, the guide frame 25 has a bent upper portion and a notch 32 that opens downward in the center. Two pins 33 are set up so as to sandwich the notches 32, and retaining rings 34 are attached to the tips of these pins 33. Each of these two pins 33 has one
Two guide plates 35 are inserted through the pins 33 and are elastically pressed forward by coil springs 36 loosely fitted to each pin 33. Reference numeral 35a designates claw pieces protruding from each opposing portion of the guide plate 35. Reference numeral 37 denotes a regulating pin attached to the back surface of the guide frame 25 so as to sandwich the notch 32 . Reference numeral 38 denotes an annular moving screw screwed into the feed screw 18, and at its rear end there is a rotation stopper plate 3 provided with notches 39a at both ends as shown in FIG.
9 is attached. Also, this moving screw 3
An annular groove 40 is provided around the guide plate 8, and the claw piece 35a of the guide plate 35 is interposed in this annular groove 40. Note that the restriction pin 37 is engaged with the locking edge at the upper part of the notch 39a.

On the other hand, a guide rail 41 is provided on the stationary chassis of the device main body 1 so as to sandwich the drive section A.
is installed. This guide rail 41 consists of a vertical plate 41a and two horizontal plates 41b that are integrally erected, and a horizontal shaft 42 and a vertical shaft 43 are attached between the vertical plate 41a and the horizontal plate 41b, respectively. Guide roller 4
4,45 are attached. On the other hand, on both sides of the drive unit A facing these, there are guide rails 4 consisting of a vertical plate 46a and two horizontal plates 46b.
6 is attached, and a guide roller 44 is in contact between the horizontal plates 46b, and a guide roller 45 is in contact with the side surface of the vertical plate 46a. Thereby, the drive section A can be smoothly moved in and out of the apparatus main body 1. 47 and 48 are limit switches which stop the drive of the motor 13 at the stop position after the drive section A has moved relative to the main body 1 of the apparatus.

Next, the operation of the tape recorder having the above configuration will be described.

First, a case will be described in which the switch 10 of the movable panel 8 is pressed to horizontally move the driving section A forward. By operating the switch 10, the motor 13 immediately starts rotating, and the pulleys 15,
22 rotates. Of these, the pulley 22 is pressed against the friction member 19 with a predetermined force by the coil spring 24, so that the rotation of the pulley 22 is transmitted to the feed screw 18 via the friction member 19 and the boss portion 20.
is transmitted to. As a result, the moving screw 38 that is screwed into the feed screw 18 also tries to rotate, but the rotation of the rotation stopper plate 39 attached to this moving screw 38 is restricted by the regulating pin 37 of the guide frame 25. Therefore, try to move forward. Also,
By moving the moving screw 38 forward, the guide plate 3 has the claw piece 35a guided in the annular groove 40.
5 is urged forward, thereby causing the guide frame 25
also moves forward. Accordingly, the driving section A also moves forward, and the tape cassette mounting section 31 is exposed from the state shown in FIG. 1 to the state shown in FIG. 2, and the tape cassette 49 can be loaded thereon. Note that the amount of forward movement of this drive unit A is determined by the guard rail 46 on the side of the drive unit A being controlled by a limit switch 48.
The motor 13 is stopped by pressing the actuator. On the other hand, when the switch 10 is operated again,
The motor 13 rotates in the reverse direction, pulling the drive unit A back into the device main body 1, and the guardrail 46 comes into contact with the actuator of the limit switch 47, stopping the motor 13. The movement is restricted by a locking piece (not shown), and the drive unit A is pulled back into the device main body 1. is accommodated in the device main body 1, and the fixed panel 2 and movable panel 8 are stopped flush with each other. Such movement is carried out by the guide roller 4.
4 and 45 are carried out smoothly by stably feeding the guide rail 46 without play while regulating its position in the vertical and horizontal directions. In this way, the drive section A of the tape recorder can be automatically loaded and unloaded by the motor 13.

By the way, during such loading and unloading operations, the drive section A may be held by hand, and a large force may be applied to it.
Even if the magnitude of the load at this time exceeds the limit torque between the pulley 22 and the friction member 19 due to the coil spring 24, the pulley 22 will slip against the friction member 19, so only the motor 13 and the pulley 22 will rotate. do. Therefore, accidents such as the motor 13 being forcibly stopped due to overload and inadvertently heating and burning out the motor 13 can be prevented.

In other words, by employing such a limiter mechanism, not only can the life of the motor 13 be extended, but even if a finger is caught between the drive unit A and the device body 1 during operation, a force exceeding the limiter torque can be maintained. It is safe because it does not apply to your fingers.

As described above, the present invention provides a tape recorder in which the tape cassette drive section is automatically moved horizontally into and out of the device body, and the motor installed on the device body side and the rotation of this motor. and a limiter spring that generates a constant limiter torque between the pulley and the feed screw by the friction member. This makes it possible to automatically load and unload the tape cassette drive into the entire tape recorder device. At this time, it is possible to prevent an accident in which the motor burns out due to an overload applied to the drive section.
Further, even if a finger or the like is accidentally caught between the drive section and the main body of the device, it is possible to prevent the risk of injury to the finger. Furthermore, such a limiter mechanism has a simple structure and can be obtained at low cost, so it is extremely useful in practice.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the tape recorder of the present invention, Fig. 2 is a perspective view of the tape cassette drive unit pulled out from the main body of the tape recorder;
FIG. 3 is a plan view showing the main parts of the drive section, and FIG.
The figure is a front sectional view of the main part, and FIG. 5 is a perspective view of the guide frame. FIG. 6 is a perspective view showing the relationship between the guide frame and the rotation stopper plate. DESCRIPTION OF SYMBOLS 1... Device main body, A... Drive part, 13... Motor, 18... Feed screw, 19... Friction member, 22
...Pulley.

Claims (1)

[Scope of utility model registration request] In a tape recorder in which a drive section of a tape cassette is automatically moved horizontally into and out of the main body of the device, there is provided a motor installed on the main body side of the device, and a motor screwed into the drive section to control the rotation of this motor. 1. A tape recorder comprising: a pulley that transmits a signal to a feed screw via a friction member; and a limiter spring that uses the friction member to generate a constant limiter torque between the pulley and the feed screw.