JPH0722751Y2 - Recording and / or reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a recording medium mounting device in which a recording medium such as a tape cassette or an optical disk is mounted and which includes a drive unit for driving and rotating the recording medium. The present invention relates to a recording and / or reproducing apparatus configured to transfer a part inside and outside an outer casing.

[Conventional technology]

Conventionally, a tape cassette mounting portion including a tape driving means such as a pinch roller and a capstan that causes a magnetic tape contained in the tape cassette to run at a constant speed is driven by a drive motor to extend inside and outside the outer casing. There is provided a so-called front loading type tape recorder in which the tape cassette is transferred and mounted.

A tape cassette mounting portion 1 incorporating a mechanical portion such as a tape driving means of a tape recorder of this type which has been conventionally provided.
Is mounted on the chassis 2 as shown in FIGS. 4 and 5, and is transferred to the inside and outside of an outer casing (not shown) by the drive motor 3 mounted on the tape cassette mounting portion 1. That is, one side plate 4 of the tape cassette mounting portion 1
The first guide rail 5 having a U-shaped cross section is attached to the second side plate 6 and the second side plate 6 is provided with a guide piece 8a on the tip side.
Guide rail 8 is attached, and a guide roller 9 provided with an engaging groove 9a on the inner side surface of one side plate 4 is pivotally supported, and the roller 11 pivotally supported on one side plate 10 of the chassis 2 is attached to the first roller. Of the guide roller 13 fitted with the guide rail 5 of FIG. 1 and provided with an engaging groove 13a pivotally supported on the other side plate 12 of the chassis 2.
The guide piece 8a is engaged with the 3a so that the guide roller 13
Of the third guide rail 14 having a U-shaped cross section in which the guide rail 8 is fitted and the guide piece 14a is provided on the tip side attached to the one side plate 10 of the chassis 2 in the engaging groove 9a. To guide the guide roller 9 to the third rail.
The tape cassette mounting portion 1 is fitted on the chassis 14 so as to be rollable on the chassis 2. A drive motor 3 is attached to the inner surface of the other side plate 12 of the tape cassette mounting portion 1, and the other side plate 12 of the chassis 2 of the other side plate 12 is attached.
Rack 15 attached to this side plate 12 at the end facing the
Loading gear with pinion 16 at the tip that meshes with
17 are provided. The loading gear 17 is connected via a belt 19 to a pulley 18 attached to the tip of the drive shaft of the drive motor 3. Therefore, the tape cassette mounting unit 1 is transferred into and out of the outer casing by the pinion 16 rolling on the rack 15 by the rotational driving of the drive motor 3.

By the way, in the conventional device as described above, since the drive motor 3 is located in the cassette mounting part on the movable part side,
The weight of the movable part increases, and the load applied to the drive motor 3 also increases, so that a large drive motor is required. In addition, since the driving portion including the loading gear 17 and the rack 15 to which the driving force of the driving motor 3 is transmitted is located at the side end portion of the cassette mounting portion 1, the driving force is deviated from the tape cassette mounting portion 1. Therefore, it becomes difficult to move in parallel with the guide rails 5, 8 and 14 and smooth transfer cannot be performed.
Further, since the guide rails 5, 8, 14 which are separate bodies are attached to the tape cassette mounting portion 1 and the chassis 2 and the roller 11 and the guide rollers 9, 13 are fitted to each other, the processing accuracy and the assembly accuracy of each component are improved. Are required and are difficult to manufacture. When a twisting force is applied to the chassis 2, each guide rail 5,
The fitting between the rollers 8, 14 and the rollers 11 and the guide rollers 9, 13 is distorted, which prevents smooth operation.

[Problems to be solved by the invention]

Therefore, according to the present invention, a stable driving force is evenly transmitted to a recording medium mounting portion such as a cassette mounting portion, a smooth transfer operation can be performed, the number of parts is reduced, assembly is easy, and mechanical strength is improved. An object of the present invention is to provide a recording and / or reproducing apparatus such as a tape recorder that can achieve an increase and can always perform a stable operation.

[Means for solving problems]

In order to achieve the above-mentioned object, a recording and / or reproducing apparatus according to the present invention movably supports both sides of a recording medium mounting portion in a chassis from above and below via guide rollers, and drives the chassis by a drive motor. And a transmission gear to which the driving force of the drive motor is transmitted. Further, the transmission gear is located on the lower surface of the recording medium mounting portion at the central portion or substantially the central portion of the recording medium mounting portion. A rack portion is provided for moving the recording medium mounting portion by receiving the driving force of the drive motor via the.

[Action]

In the recording and / or reproducing apparatus according to the present invention, the recording medium mounting portion, which is supported by the chassis on both sides in the vertical direction via the guide rollers, moves on the chassis. Then, the driving force of the drive motor arranged on the chassis is transmitted to the rack portion by being provided on the lower surface of the recording medium mounting portion at the central portion or substantially central portion of the recording medium mounting portion via the transmission gear. The moving operation of the recording medium mounting portion is performed.

〔Example〕

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

A tape cassette mounting portion 21 which is a recording medium mounting portion constituting the present invention has a box-shaped frame 22 integrally formed by sheet metal or the like, and this frame 22 is a tape reel of a tape cassette mounted therein. Reel driving means such as a reel motor for rotating the tape cassette, tape driving means including a pinch roller for moving the magnetic tape contained in the tape cassette at a constant speed, a capstan and the like, and a mounting board mounted on the frame 22. A tape cassette mounting portion is formed by projecting a reel shaft or the like onto the 23, and a head substrate or the like to which a magnetic head for recording / reproducing is mounted is mounted. As described above, slide guide plates 24, 24 having an L-shaped cross section integrally with the frame 22 are provided on both sides of the rear side of the tape cassette mounting portion 21 having the box-shaped frame 22 in which the mechanism portion such as the tape driving means is incorporated. It has been extended.

On the other hand, the chassis 25 to which the tape cassette mounting portion 21 is rotatably mounted has a portion for mounting the tape cassette mounting portion 21 and signal processing of a sound signal from the magnetic tape or a signal processing of a sound signal to be recorded on the magnetic tape. It is divided by the central side plate 26 into a portion to which an electric circuit portion for carrying out is attached. Then, on the chassis 25, a pair of left and right guide rollers 28 that support both sides of the lower surface side of the tape cassette mounting portion 21 via erected pieces 27, 27 formed by cutting and raising a part and a central side plate 26 are pivotally supported. Similarly, a pair of left and right guide rollers 29 that support both sides of the upper edge of the tape cassette mounting portion 21 via the other planting pieces 39, 39 and the central side plate 26 are also pivotally supported. Each of the guide rollers 28, 29 is provided with a flange portion 28a, 29a for restricting the lateral position of the tape cassette mounting portion 21.

Then, the tape cassette mounting portion 21 is inserted between the upper and lower guide rollers 28, 29 and is rotatably arranged on the chassis 25. Further, on the lower surface side of the tape cassette mounting portion 21 and on the bottom plate 30 of the chassis 25, engaging pieces 31, 3 having L-shaped cross sections which engage with each other in the transfer direction of the tape cassette mounting portion 21.
2 is provided to prevent the tape cassette mounting portion 21 from rising from the chassis 25.

A rack portion 33 is attached to the central portion of the bottom surface of the tape cassette mounting portion 21 in the transfer direction of the tape cassette mounting portion 21. On the other hand, on the front side of the bottom plate 30 of the chassis 25, that is, in the vicinity of a tape cassette mounting portion insertion / extraction opening of an outer casing (not shown), a loading gear 35 having a pinion 34 meshing with the rack portion 33 at the tip of a spindle is rotatably supported. ing. A drive motor 36 is attached to the inside of the bottom plate 30 of the chassis 25. The driving force of the drive motor 36 is transmitted to the loading gear 35 via a belt 38 wound between a pulley 37 attached to the drive shaft of the drive motor 36 and the loading gear 35. That is, the rack portion 33
The loading gear 35 provided with the pinion 34 that meshes with
It serves as a transmission gear that transmits the driving force of the drive motor 36 to the rack portion 33 attached to the tape cassette mounting portion 21.

Then, when the drive motor 36 is driven, the driving force of the drive motor 36 is transmitted to the loading gear 35 via the belt 38. Further, the driving force of the drive motor 36 is transmitted to the rack portion 33 via the pinion 34 provided in the loading gear 35, and the tape cassette mounting portion 21 to which the rack portion 33 is attached is guided by the guide rollers 28, 29. Is moved in the front-rear direction of the chassis 25, and is transferred to the inside and outside of the outer casing through a tape cassette mounting portion insertion / ejection opening of the outer casing (not shown).

In the above-described embodiment, the invention is applied to a tape recorder, but the recording medium mounting portion is configured as a disc mounting portion provided with a disc table or the like on which a disc or the like is mounted. Etc. can also be applied.

[Effect of device]

As described above, in the recording and / or reproducing apparatus according to the present invention, the drive motor is disposed on the fixed chassis that movably supports the recording medium mounting portion, and the lower surface of the recording medium mounting portion includes: The recording medium mounting portion is provided with a rack portion which is located at the central portion or substantially the central portion of the recording medium mounting portion and which is moved and operated by receiving the driving force of the drive motor. Since the parts are moved and operated, the weight of the recording medium mounting part that is moved and operated can be reduced, and the size of the drive motor used can be reduced.

The rack portion, which is moved and operated by receiving the driving force of the drive motor, is provided on the lower surface of the recording medium mounting portion at the central portion or substantially the central portion of the recording medium mounting portion. The length of the mounting portion in the moving direction can be shortened, and the overall size of the device can be reduced.

Further, since the rack portion, which is moved and operated by receiving the driving force of the drive motor, is provided on the lower surface of the recording medium mounting portion at the central portion or substantially the central portion of the recording medium mounting portion, the drive motor is provided. Is transmitted to the substantially central portion of the recording medium mounting portion, and the recording medium mounting portion can be linearly transferred in a stable state without being swung with equal force on the left and right. Further, since the recording medium mounting portion is movably supported by the chassis in a state in which the movement in the vertical direction is regulated, the movement in the vertical direction is also regulated, and the recording medium mounting portion can be accurately transferred straight.

Further, since the drive motor is arranged in the chassis on the fixed side, the wiring of the external connection cord for supplying the drive motor with power and the like becomes easy.

Furthermore, since the recording mounting portion does not have an engaging structure with the guide roller and the guide rail unlike the conventional one, even if a distortion force is applied to the chassis that movably supports the recording medium mounting portion, It is possible to stably transfer the recording medium mounting portion.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a perspective view of an essential part thereof, and FIG. 3 is a front view thereof. FIG. 4 is a perspective view showing a conventional example, and FIG. 5 is a front view thereof. 21 …… Table cassette mounting part 25 …… Chassis 28,29 …… Guide roller 33 …… Rack part 35 …… Loading gear 36 …… Drive motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-113556 (JP, A) JP-A-53-72603 (JP, A) Actually open 55-169661 (JP, U) Actual-open Sho 53- 122922 (JP, U) Actual opening Sho 59-36052 (JP, U) Actual opening Sho 58-179650 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A recording medium mounting portion is movably supported by a chassis from above and below via guide rollers in a vertical direction, and a drive motor and a transmission gear to which a driving force of the drive motor is transmitted are arranged on the chassis. Further, the recording medium mounting portion is positioned on the lower surface of the recording medium mounting portion at the central portion or substantially the central portion of the recording medium mounting portion, and receives the driving force of the drive motor via the transmission gear, and the recording medium mounting portion. A recording and / or reproducing apparatus provided with a rack section for moving and operating the.