JPS6273451A - Cassette loading device - Google Patents

Abstract

PURPOSE:To load surely and safely a cassette with high operability by moving the cassette laterally while utilizing the operation closing a cover of a cassette loader to detect the position of the cover thereby bringing the mode into the cassette ejection mode when the cover is opened. CONSTITUTION:Since the cassette 36 is moved horizontally by utilizing the operation of closing a cover 17 of a cassette loader, a motor drives the cassette in the vertical direction only, a complicated changeover device is not required to simplify the structure. Thus, the operating stroke caused by the motor drive is decreased to use the cam drive and the motor drive in common. Even when deficient loading of the cassette 36 on an inner case 10 takes place, it is corrected by pushing by a projecting part 17a of the cover 17. In loading the cassette 36 on the device, the cover 17 is used as a guide. When the cover 17 is opened, since the mode is the ejection mode, the mode is distinguished clearly externally to improve the performance as a commodity. The reloading is operated immediately after the cover 17 is closed even during the ejection.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a cassette loading device for loading a cassette containing a magnetic tape into a magnetic recording/reproducing device such as a video tape recorder, and particularly relates to a front loading type cassette loading device. Regarding equipment.

[Technical background of the invention and its problems]

Conventionally, a cassette loading device (hereinafter referred to as F/'L) installed in a video tape recorder or the like has been configured to move the cassette in the horizontal and vertical directions using a single drive motor. According to such a conventional structure, there is a problem that the switching mechanism between horizontal movement and vertical movement becomes complicated.

Furthermore, even when the above operation is performed using a cam, the operation stroke is long, making it difficult to share the cam drive with the motor drive. Furthermore, when inserting the cassette, there is a possibility that the cassette is not inserted properly due to the cassette becoming stuck, and in such a case, there is a problem that an abnormal operation occurs.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a cassette loading device that has a simple structure, can reliably load cassettes, has good operability, and is highly safe.

[Summary of the invention]

The present invention includes a transmission member provided at a cassette entry port of a cassette loading device that transmits the closing operation of a lid to horizontal loading operation of the cassette, and a transmission member that detects the open position 1a of the lid and generates a signal for the cassette ejection mode. The intended purpose is achieved by providing the cassette loading device with a detection member that emits light.

[Embodiments of the invention]

Hereinafter, one embodiment of a cassette loading device according to the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. In this embodiment, the cassette is inserted in the longitudinal direction C. The cassette loading device is held by a guide bracket IK, and this guide bracket I is attached to a chassis (not shown). A cassette holder 2 provided within the main body of the apparatus is vertically movable by a pair of stop arms 3 and a lift sub-arm 4 provided symmetrically on both sides thereof. A portion of the lift arm 2 is rotatably supported by a shaft 5 provided on the side surface of the guide bracket 1, and a bottle 6 is implanted at the other end. The bin 6 is engaged with and guided by an arcuate guide i#la centered on a shaft 5 formed on the side surface of the guide bracket 1 and a structure 12a formed on the side surface of the cassette holder 2, respectively. Above mentioned 7 to sub arm 4
is rotatably connected to the shaft 7 at approximately the center of each arm 2 as described above. Bins 8.9 are installed at both ends of the lift sub-arm 4, respectively. The bin 8 is rotatably connected to the cassette holder 2 and guided by a vertical groove 1bK formed on the side surface of the guide placket 1.

Further, the pin 9 is engaged with and guided by a lateral 11cK formed on the same side of the guide bracket 1. This mechanism is provided on both opposing sides of the guide plaque 10.

An inner case 1o is provided inside the cassette holder 2 so as to be movable in the horizontal direction.
The FkJK cassette is loaded and moves horizontally. A guide pin 1 is installed on the side surface of the inner case 10 parallel to the moving direction, and is engaged with a vertical groove 12a formed in the L-shaped slider 2 so as to be movable in the vertical direction. . Further, this guide bin 11 is formed on the longitudinal side 1]1dK of the guide bracket 1 and is approximately L.
The inner case 10 is fitted and guided by a letter-shaped guide groove 1e, and the lateral and vertical movement ranges of the inner case 10 are restricted. Further, the slider 12 is mounted on the side surface 1d of the guide bracket 1 so as to be movable in the horizontal direction, and is biased by a spring 13 in the direction of the cassette insertion slot weight 4 (leftward in the figure). A rack 12b is formed on a part of the lower surface of the horizontal portion of the slider 12. 15 is slider 12
It is a roller that guides you. 11 in the side surface of the guide plaque 1 on which the 7-arm 3 and lift sub-arm 4 are provided, facing the surface on which the cassette insertion port 14 is formed.
A cassette detection switch 16 is provided at j. This cassette detection switch I6 is a switch that detects that a cassette is inserted in the horizontal direction. When a cassette is detected by this switch 16, the 7th arm 3 and the lift sub-arm 4 are activated, and the loading operation of the cassette holder 2 is started in the vertical direction. This switch 1
If the cassette is not displayed by 6, the cassette holder 2 will not move in the vertical direction.

The lid 17 is a guide bracket in the cassette insertion slot 14).
It is rotatably supported by a shaft 18 fixed to 1. This M17 may be supported by the chassis or cabinet of a main body such as a video tape recorder. This lid 17
is biased in the opening direction by a lid return spring 19 wound around the shaft 18. A pair of protrusions 17a are formed at the center of the inside of the lid 17, and K has the function of pushing the cassette into the correct position when the cassette is not fully inserted when the M17 is closed. Although not shown, if the shape of these protrusions 17a is changed, they can also be used as guides when inserting a cassette when the lid 17 is open.

An arcuate gear portion 20 is formed near one end of the inside of the lid 17 in a direction perpendicular to the lid 17. This gear part 20
A small gear 21 meshes with the small gear 21, and an amplification gear 22 and a drive gear 23, which are fixedly installed coaxially with the small gear 21, are in mesh with each other. These gears 21, 22 and the drive gear 23 are each connected to a shaft 24 fixed to the side surface 1d of the guide bracket 1.
．． It is rotatably supported by 25. An operating gear 26 is rotatably supported on the shaft 25, and is biased counterclockwise in the figure by an operating gear biasing spring 27 provided coaxially. As shown in FIG. 2, protrusions 23a and 26a are provided on opposing surfaces of the drive gear 23 and the operating gear 26, respectively, and a toothless portion 26b is formed on a part of the outer periphery of the operating gear 26. has been done. The operating gear 26 meshes with a rack 12b formed on the slider 12. 26C is a protrusion provided on the operating gear 26 that supports one end of the biasing spring 27.

A lock bin 28 is provided between the inner protrusion 17a of the M17 and the gear portion 20. This lock bin 2
8 can be locked with a lid lock 29 provided on the guide bracket 1 when the lid 17 is closed. As shown in FIG. 3, this lid lock 29 is rotatably supported by a shaft 30 fixed to the guide bracket 1, and is wound around this shaft 30 with both ends attached to the guide bracket 1 and the lid lock 29, respectively. The lid lock is biased clockwise in the figure by the locked lid lock biasing spring 31. 1f is 11 of the lid lock 29
This is a stopper that locks the moving end. A lock release lever 32 is provided near the end K of one side of the slider 12 side of the cassette holder 2 on the insertion port side, and is biased counterclockwise in the figure by a lock release lever biasing spring 33.

A ball detection bottle 34 is installed in the amplification gear 22K, and with n17 closed, the ball detection switch 35 fixed to the side surface 1d of the guide bracket 1 is fully pressed and the lid is closed. It is now detectable.

The operation of this embodiment configured as described above will be described below. 4 and 5 show the operation when loading a cassette. When the cassette 36 is inserted into the cassette insertion slot 14 and A17 is closed, the gear section 20, the small gear 21, the amplification gear 2
2, the rotation angle is amplified and the drive gear 23 is rotated clockwise. At this time, the protrusion 23a provided on the drive gear 23 pushes the protrusion 26a provided on the operating gear 26, and the operating gear 2
Rotate 6 clockwise. Then, the slider 12 is moved in a direction opposite to the force set insertion opening 14 via the rack 12b that is engaged with the operating gear 26. slider 1 with
2 causes the inner case 1O to move horizontally via the guide bin 11' that is engaged with the vertical groove 12a.

This movement of the slider 12 is prevented by a predetermined amount or more due to the pressure between the toothless portion 26b formed in the operating gear 26 and the portion of the slider 12 where the rack 12b is not formed.

The stop position of the slider 12 in the right direction in the figure is the right end of the guide Jie formed on the guide bracket 1 in the figure. At this time, the protrusion 17a formed on the lid 17 is attached to the cassette 36.
Push the cassette 36 into the inner case 10 until it reaches a predetermined position. When the lid 17 is closed, a ball detection bottle 34 installed in the width increasing gear 22 pushes a ball detection switch 35 to detect that the lid 17 is closed. Further, when the cassette 36 is pushed to a predetermined position, the cassette detection switch 16 is activated. When these switches 16 and 35 are actuated, a mechanism (not shown) guides the cartridge set holder 2 through the guide bin lli to the vertical portion of the guide groove 1e and lowers it. At this time, the lock bin 28 provided at i17 is locked to the lid lock 29.

Next, the operation when taking out the cassette 36 will be explained with reference to FIGS. 5 and 6. When the lid 17 is pushed again, the lock bin 28 rides on the slope of the lid lock 29, the lock is released, and the lid 17 is opened by the biasing force of the lid return spring 19.

As a result, the aforementioned l! When closing t17', the drive gear 23 rotates counterclockwise. At this time, drive gear 2
Since the protrusion 23a provided on the drive gear 3 is separated from the protrusion 26a provided on the operating gear 26, the drive gear 23 can freely rotate in reverse regardless of the movement of the operating gear 26. Therefore, lid 1
7 can be opened in advance. Then, the lid detection bin 34 provided in the amplification gear 22 is connected to the lid detection switch 35.
Move away from this lid detection switch 35 'i 0 F F
shall be. As a result, an ejecting operation is started by a mechanism (not shown). When the cassette holder 2 finishes rising, the inner case 10 is moved together with the slider 12 into the cassette insertion slot 14 through the guide bin 11 due to the urging force of the barbs 13.
Move horizontally in the direction of . At this time, the toothless portion 26b formed in the operating gear 26 allows the rack portion 12b of the slider 12 and the operating gear 26 to reliably mesh again at a predetermined position when the slider 12 returns. As mentioned above, if the lid 17 is open, the cassette ejecting mode is entered, and if the lid 17 is closed midway, the loading operation is performed again.

Also, even if you close the lid 17 without inserting the cassette 36, the cassette detection switch 16 is OFF, so you are not in cassette loading mode, and if you press the lid 17 all the way again, the 3i
i17 opens.

If the cassette removal mode is automatically entered for some reason, such as when an abnormal load is detected during a cassette loading operation, the operations shown in FIGS. 7 and 8 are performed. That is, the lock release lever 32 attached to the cassette holder 2 rises together with the cassette holder 2, pushes the lid lock 29 upward, and releases the lock. When M17 is closed in this state, the lock release lever 32 and the lid lock 29 are disengaged by the overstroke of the lock bin 28 provided on the lid 17, and the lid lock 29 is locked again by the lock bin 28.

In this embodiment, in order to increase the degree of freedom in design, the operating gear 26 is
The case has been described in which the operating stroke of the cassette 36 is amplified to a greater extent than the horizontal insertion stroke of the cassette 36 with a margin, but the amplification factor is set so that the horizontal insertion stroke of the cassette 36 and the operating stroke of the operating gear 26 are equal. You may. In this case, the operating gear 26 and the slider 12 may be engaged simply by gears, and the toothless portion 26b and the operating gear biasing spring 27 are not required. Further, as a means for absorbing the extra stroke, the slider 12 may have a two-piece structure, connected by a spring, and pressurized so that the extra stroke is absorbed by the extension of the spring. In this case as well, the operating gear biasing spring 27) is not required.

According to this embodiment, since the movement of closing the lid 17 of the cassette loading device is used to pressurize the cassette 36 to move in the horizontal direction, the drive by the motor is only for vertical movement of the cassette, and unlike the conventional KW The structure is simplified because a complicated switching device is not required. Therefore, since the operating stroke due to motor drive becomes small, it becomes possible to use both nom drive and motor drive. Furthermore, even if the cassette 36 is not inserted sufficiently into the inner case 1o, the protrusion 17 of the lid 17
It can be corrected by pressing with a. Also cassette 36
M17 can be used as a guide when inserting into the device.

Furthermore, since the eject mode is in effect when the lid 17 is open, the pressure mode can be clearly distinguished from the outside, and the product quality can be improved. Furthermore, even during ejection operation, the lid 17t
- Once closed, you can immediately move on to reloading, making it easy to operate. One eject indicator lamp and one eject button switch, which were conventionally provided as parts.
Leap can be reduced.

Furthermore, since the -f eject operation is performed using the lid 17, which has a larger area than a conventional eject button, operability is improved. Moreover, since the zero operation does not occur unless the lid 17 is closed, there is no need to pinch your hands during operation.

In this embodiment, the mechanism in which the M17 opens by pressing the lid 17 again has been described, but is it possible to use a friction plate instead of the lid return spring 19? The lid 17 may be opened and closed manually by applying a predetermined load to the opening and closing of the lid 17.

In this case, the lock pin, lid lock 29, shaft 30. The lid lock biasing spring 31, the lock release lever 32, and the lock release lever bias spring 33 may be omitted.

〔Effect of the invention〕

As described above, according to the present invention, the cassette is moved completely horizontally using the operation of closing the lid of the cassette loading device, and the position of the lid is detected and the cassette ejection mode is set when the lid is open. Therefore, the cassette can be fully loaded safely and reliably with a simple structure and good operability.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the cassette loading device according to the present invention, FIGS. 2 and 3 are enlarged perspective views showing the main parts of FIG. 1, and FIGS. FIG. 3 is a side view showing an example operation. 2...Cassette holder, 10...Inner case 11.
...Guide pin, 12...Slider 14...Cassette opening 17...Lid, 20...Gear part 21...Small gear, 22...Amplification gear 23...,
Drive gear, 26... Operating gears 21 to 23 and 26-...
(Gear i#) 35...Lid detection switch (detection member) 3
6...Cassette representative patent attorney Yudo Noriyuki Chika
Hiro Uji ('4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) In a cassette loading device that loads a cassette containing a recording medium into a magnetic recording/reproducing device, a holding means for holding a cassette inserted from a cassette insertion opening and a holding means for holding the cassette inserted from a cassette insertion port and driving the cassette holding means to move the cassette to a loading position. A driving means for moving the cassette is provided to open and close the cassette insertion opening, and the movement of the position from the open state to the closed state is converted into mechanical force and applied to the driving means to move and load the cassette. 1. A cassette loading device comprising: a lid configured with a cassette loading device; (2) In a cassette loading device that loads a cassette containing a recording medium into a magnetic recording/reproducing device, a holding means for holding a cassette inserted from a cassette insertion slot and a holding means for driving the cassette holding means to move the cassette to a loading position. A drive means for moving the cassette and removing it from the position to carry it out to the cassette insertion slot; and a drive means for opening and closing the cassette insertion slot, and controlling the drive means in the open state to transport the cassette to the cassette insertion slot. and a lid configured to set a mode. (3) The lid has a self-unlocking function, and by pushing the lid itself in the closed state, the lid opens and a mode is set in which the cassette is carried out to the cassette insertion slot. The cassette loading device according to scope 2.