JP2700723B2 - Cassette loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device provided in a device such as a video tape recorder, and more particularly to a tray-type cassette loading device for inserting and removing a cassette outside a device body.

[0002]

2. Description of the Related Art In this type of cassette loading apparatus,
A cassette holding lever for pressing and holding the cassette on the cassette holder, or a dedicated lever for tilting the cassette to facilitate insertion and removal of the cassette at the cassette insertion / removal position outside the device body, enables the tray to move. It is provided on a pair of left and right frames to be held.

Further, an X-type link mechanism is used to store the tray in the main body of the apparatus and lower or raise the cassette holder holding the cassette to a predetermined loading position. A mechanism for locking the cassette holder at a predetermined position or releasing the lock is also provided on the pair of frames.

[0004]

In such a conventional cassette loading apparatus, a mechanism for inclining the cassette, pressing and holding the cassette on the cassette holder, and further, locking the cassette holder is provided. Since the cassette holder is provided on a pair of left and right frames and the cassette mechanism is moved up and down by a link mechanism, the number of parts is large and the configuration is complicated.

[0005] The present invention has been made in view of the above points, and has as its object to provide a cassette loading device with a simplified configuration.

[0006]

In order to achieve the above-mentioned object, the present invention is configured as follows.

That is, the present invention relates to a tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device main body, wherein the cassette holder on which the cassette is mounted is provided. Cassette holding means including a pair of holder guides to which the cassette holder is swingably mounted, a pair of frames,
A drive unit including a single drive motor, a pair of drive gears that rotate in synchronization with the drive motor, and a rack gear that meshes with the drive gear and move in the horizontal direction by the power of the drive motor A pair of moving mechanisms for moving the cassette holding means in the horizontal direction between the cassette inserting / removing position and the loading position in the apparatus main body; and a pair of moving mechanisms housed in the moving mechanism and A tilting mechanism for tilting or returning the cassette holder by swinging the cassette holder at the cassette insertion / removal position in accordance with the movement, and loading the holder guide stored in the moving mechanism with the loading position and the cassette; Transfer means including an elevating mechanism for raising or lowering the device to or from a position, wherein the moving mechanism has the rack gear and receives power from the drive motor. And a pair of guide rails attached to each of the drive rack rails, wherein the tilt mechanism slides in a storage section between the drive rack rails and the guide rails. A first sliding member that moves, and a swing lever that swings the cassette holder by swinging in accordance with the sliding of the first sliding member in the storage section, wherein the lifting mechanism includes: A second sliding member that has a rack gear that meshes with the driving gear and slides in the storage section by the power of the driving motor to raise and lower the holder guide;
Basically, the second sliding member includes a locking member that urges the sliding member in a predetermined direction by engaging an engaging portion formed on the sliding member at both ends of the sliding member. It has a configuration.

[0008] According to the first aspect of the present invention,
A lock lever is swingably attached to the frame, and the lock lever is engaged with an engagement portion of a moving mechanism when the holder guide is lowered.

According to the second aspect of the present invention, the drive mechanism is configured to stop once after detecting that the moving mechanism has reached the vicinity of the end of the cassette insertion / removal position, and to drive again for a predetermined time. ing.

Further, in the invention according to claim 3,
Detecting that the moving mechanism has reached just before the terminal end on the loading position side, the drive motor is temporarily stopped to apply braking.

Alternatively, according to the invention described in claim 4, between the worm gear of the driving means and the joint pulley,
An elastic member that absorbs play in the thrust direction of the worm gear is interposed.

In the invention described in claim 5, the phase of the rack gear of the second sliding member and the phase of the rack gear of the drive rack rail are slightly shifted in a certain direction.

[0013]

According to the above construction, the mechanism for tilting the cassette holder and the mechanism for moving the holder guide up and down are housed in the moving mechanism for moving the cassette holding means in the horizontal direction.
Further, since the lifting mechanism does not use the X-type link mechanism, the configuration is simplified as compared with the conventional example in which various mechanisms are provided on the pair of left and right frames.

Furthermore, according to the first aspect of the present invention, it is possible to reliably prevent the tray from moving in the ejecting direction when the tray is stored, and to prevent a problem due to an impact received during transportation of the device. .

According to the second aspect of the present invention,
During the ejection operation, the tray can be prevented from moving in the loading direction due to the recoil coming into contact with the stopper.

According to the third aspect of the present invention, the transition from the horizontal operation to the vertical operation in the cassette loading operation is performed smoothly.

Further, according to the fourth aspect of the invention, it is possible to effectively prevent the worm gear from moving in the thrust direction and generating a tapping sound in response to a load change on the driven side.

According to the fifth aspect of the present invention,
Even if the phase of the rack gear changes due to environmental changes, component accuracy, and the like, the rack gear can smoothly mesh with the driving gear.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 3 are respectively a plan view, a front view, and a side view of the cassette loading device of the present invention, and FIGS. 4 to 6 are a plan view, a front view, and a right side view of a magnetic tape drive, respectively. 8 is a plan view of the driving means of the cassette loading device,
FIGS. 9 to 11 show the plane, front, and left sides of the cassette holding means, respectively, and FIGS. 12 to 15 show the plane, front, side, and side views of the cassette transfer means, respectively. 24 to 24 are diagrams for explaining the operation of the cassette loading device, and FIG. 25 is a timing chart.

Referring to FIGS. 1 to 3, 7 and 8,
The right frame 1 and the left frame 2 are connected to each other by a top plate 3 and a recording switch angle 4 in a state of being erected at a predetermined interval from each other. A recording switch 59 is attached to the recording switch angle 4. Two guide rail roller shafts 5 are implanted in each of the right frame 1 and the left frame 2, and a guide rail roller 6 is rotatably supported on each of the guide rail roller shafts 5. ing.

In the right frame 1, a cam gear shaft 7 and a worm wheel shaft 9 are implanted. A right cam gear 10 and a worm wheel 12 are rotatably supported by the cam gear shaft 7 and the worm wheel shaft 9, respectively.
Small diameter gear 10b of right cam gear 10 and worm wheel 1
And the second small diameter gear 12b. Left frame 2
, A cam gear shaft 8 is implanted, and a left cam gear 11 is rotatably supported on the cam gear shaft 8.

The synchro gears 14a and 14b are fixed to both ends of a main shaft 13 bridged between the frames 1 and 2 and rotate synchronously with each other. Synchro gear 14a
Since the large diameter gear 10a of the right cam gear 10 and the synchronizing gear 14b mesh with the gear 11a of the left cam gear 11, the right cam gear 10 and the left cam gear 11 as driving gears rotate synchronously with each other. become.

A worm gear 16 meshes with the large-diameter gear 12a of the worm wheel 12. The worm gear 16 is a bearing 1 fixed to the worm angle 15.
7 and the joint pulley 1 pressed into the driving motor 18
9 support both ends. A motor 18 is fixed to the worm angle 15 with screws or the like. The worm angle 15 itself is fixed to the right frame 1 with screws or the like.

Here, the details of the drive section will be further described with reference to FIG. FIG. 33 is a partially broken side view in which the vicinity of the worm gear 16 is enlarged. In this example,
An elastic member 80 such as a soundproof rubber is interposed between the worm gear 16 and the joint pulley 19 so as to be compressed in the thrust direction, so that the play of the worm gear 16 in the thrust direction is absorbed by the elastic member 80. It has become.

In the drive unit shown in FIG. 34 in which such an elastic member 80 is not interposed, a tapping sound is generated as follows. That is, when the motor 18 rotates clockwise, the joint pulley 19 fixed to the shaft 18a of the motor 18 rotates, and the worm gear 16 engaged with the joint pulley 19 rotates clockwise around the bearing 17 as a fulcrum. I do. When the worm gear 16 rotates clockwise, the worm wheel 12 meshing with the worm gear 16 rotates clockwise, and power is transmitted to the driven side. At this time, the worm gear 16 receives the thrust force on the bearing 17 side and is pressed against the bearing 17 side. At this time, if the load fluctuation on the driven side is large, the thrust force also fluctuates greatly, causing the worm gear 16 to bounce with respect to the bearing 17 and generating a tap sound. Similarly, when the motor 18 rotates counterclockwise,
A similar phenomenon occurs when the motor 18 receives the thrust force of the worm gear 16.

On the other hand, in the present invention, since the elastic member 80 is provided as described above, the play of the worm gear 16 in the thrust direction is eliminated, and the worm gear 16 moves in the thrust direction in response to a load change on the driven side. The occurrence of tapping due to movement is suppressed, and the silent effect is improved.

Referring again to FIG. 1 to FIG. 3, FIG. 7, and FIG. 8, the first switch lever 20 and the second switch lever 21 are both rotatably fixed to the right frame 1. The first switch lever 20 is urged clockwise and the second switch lever 21 is urged counterclockwise by a switch lever spring (not shown). Both the first cassette switch 22 and the second cassette switch 23 are fixed to the right frame 1. The start sensor 24 and the end sensor 25 are fixed to the frames 1 and 2 by holders (not shown).

Skateboard lock 2 as lock lever
The skateboard lock shafts 28, 28 are rotatably attached to the skateboard lock shafts 28, 28, and are urged in a direction in which the tips are lowered by a skateboard lock spring (not shown). The skateboard lock shafts 28 are planted in the right and left frames 1 and 2, respectively.

The two frames 1 and 2 are provided with holes 55e and 55e of a mechanical chassis 55 shown in FIGS. 4 to 6 by front claws 1a and 2a.
55f, and the rear holes 1b, 2b
Are fixed to a mechanical chassis 55 by screws or the like.

Referring to FIGS. 9 to 11, a slider 31 for placing and moving the cassette 30 has stoppers 31a and 31b for regulating the insertion position of the cassette 30. The right holder 32 and the left holder 33 for guiding the above are attached to form a cassette holder.

The right holder 32 has a cover 3 of the cassette 30.
A lock release lever 34 (not shown) is unlocked by a lock release lever spring (not shown) such that the lock release lever 34 for releasing the lock of the lock member 0a is rotatably mounted inside. Being energized.

A lid opening holder 39 as a lid opening member includes:
The fulcrum shafts 39a and 39b are formed on both sides, and the fulcrum shafts 39a and 39b are connected to the right and left holders 32,
33, it is rotatably attached by being inserted into each hole. Each holder 32, 33 has a rotating shaft 32 on the outside.
a, 33a are formed, and the rotating shafts 32a, 32a
The b is inserted into the respective holes of the holder guides 35 and 36 so as to be rotatably fixed to the right and left holder guides 35 and 36.

The lid opening holder 39 has projections 39c and 39d formed on both sides thereof.
9d are inserted into a cam groove 35a formed in the right holder guide 35 and a cam groove (not shown) formed in the left holder guide 36, respectively.

Right and left cassette holding levers 37 and 38 are rotatably attached to the holder guides 35 and 36, respectively, and are urged outward by a holding lever return spring (not shown).

Referring to FIGS. 12 to 15, the right drive rack rail 40 and the left drive rack rail 41 have a front portion fixed to a guide panel 42 and a rear portion connected and fixed to a fixed angle 43. The inside of the guide panel 42 is hollow, and the guide panel 42 has a built-in liquid crystal display unit 61 for displaying the operation state of the device. An FPC cable 62 for operating the liquid crystal display 61 is inserted through a hollow portion of the right guide rail 49 and has one end connected to the liquid crystal display 61.
, And the other end is connected to a circuit unit (not shown).

The right driving rack rail 40 has a long hole 40a and a concave portion 40b for guiding each of the guide shafts 35b and 35c of the right holder guide 35, and also has a concave portion 40k on the back surface side of the square hole 40j. , A cassette spring 53 is attached.

Right down rail 4 as second sliding member
A concave portion 40d is formed in a portion where 4 slides inside, and a concave portion 40e is formed in a sliding portion of the up rail 47 as a first sliding member and a rotating portion of the up lever 46 as a swing lever. I have. A concave portion 40 is formed in the sliding portion of the cam portion 44c of the right down rail 44.
Concave portions 40i (two places) which are more concave than d are formed. In addition, a long hole 40q is formed in front of the position to be the optical path of the LED 56 shown in FIG.

The up lever 46 is rotatably supported by a rotating shaft 40f formed on the right driving rack rail 40.
6a is inserted into the elongated hole 47a of the up rail 47. The up rail 47 is slidable by being guided by the upper and lower surfaces of the concave portion 40 e of the right drive rack rail 40. Similarly, the right down rail 44 can be slid by being guided by the upper and lower surfaces of the recess 40d of the right drive rack rail 40. Down rail lock 48 as a lock member
Is supported by a shaft 40g formed on the right drive rack rail 40 and has a down rail lock spring (not shown).
As a result, the right down rail 44 is urged leftward to press the concave portion 44f of the right down rail 44.

The right down rail 44 includes a rack 44e.
And a cam 44d into which the guide shaft 35b of the right holder guide 35 is inserted to move the right holder guide 35 up and down.
, A cam 44c for pressing the convex 37a of the right cassette holding lever 37 is formed. Also, the shaft 44a and the recess 44
b is formed, and the down switch lever 52 is rotatably inserted into the shaft 44a. The down switch lever 52 is formed with a shaft 52a, which is inserted into a groove 40h formed in the right driving rack rail 40, and is moved and rotated along the groove 40h by moving the right down rail 44. Has become.

A right guide rail 49 is attached to the outside of the right drive rack rail 40 with a screw or the like to form a moving mechanism, and the right down rail 4 constituting an elevating mechanism is provided.
4. The down rail lock 48 and the up lever 46 and the up rail 47 that constitute the tilting mechanism are sandwiched between the right drive rack rail 40 and the right guide rail 49, and serve as slide or rotation guides.

The right guide rail 49 has a groove 49a on the outside for engaging with the guide rail roller 6, the inside is flat, and the guide rail drive shaft 51 is implanted. On the opposite side surface, there is no up rail 47, up lever 46, and down switch lever 52, and accordingly, the left drive rack rail 41 has no recess 40e and shaft 40f shown in the right drive rack rail 40;
The mechanism and shape are symmetric except that the left down rail 45 does not have the concave portion 44b and the shaft 44a shown in the right down rail 44.

The above three broadly divided means, the holding means for holding the cassette, are attached to the transfer means and are configured to be movable by the driving of the driving means.

Specifically, the shaft 3 of the right holder guide 35
5b is inserted into the elongated hole 40a of the right driving rack rail 40 and is inserted into the cam 44d of the right down rail 44. The shaft 35c of the right holder guide 35 is inserted into the concave portion 40b of the right drive rack rail 40, and the right holder guide 35 is mounted to be vertically movable. Similarly, the left holder guide 36 is mounted so as to be able to move up and down, so that a mechanism for holding the cassette 30 is provided by the cams 44 d and 4 of the right down rail 44 and the left down rail 45.
5d (not shown) is attached to the transfer mechanism so as to be able to move up and down.

The mechanism for transferring the cassette 30 includes a groove 49a of the right guide rail 49 and a left guide rail 50.
The groove 50a is inserted into the four guide rail rollers 6 pivotally supported by the frames 1 and 2, and is slidably mounted. The right drive rack rail 40 has a convex 40n.
And 40o are formed, and the protrusion 40n comes into contact with the bent portion 1d of the right frame 1 so that the protrusion 40o
The projection 47b formed on the right side of the frame 47 abuts on the bent portion 1d of the right frame 1 to serve as a slide stopper of the transfer mechanism.

The large-diameter gear 10a of the right cam gear 10 is located at a position meshing with the rack gear 40c of the right driving rack rail 40 and the rack 44e of the right down rail 44.
Similarly, the gear 11a of the left cam gear 11 is at a position where it meshes with the rack gear 41e of the left drive rack rail 41 (FIG. 13) and the rack 45c of the left down rail 45 (FIG. 13). FIGS. 15 to 24 are explanatory views of the right side operation of the cassette loading device. FIGS.
FIG. 20 to FIG. 24 show the cassette 3
It is a mechanism diagram which holds 0.

The operation will be described with reference to FIGS. The right guide rail 49 is omitted for the sake of explanation.

FIGS. 15 and 20 show the ejected state, in which the right drive rack rail 40 is slid to the outermost position, and the protrusion 47b of the up rail 47 contacts the stopper 1d of the right frame 1 (FIG. 7). 15, the up rail 47 is in the position shown in FIG. 15, and the shaft 46 b of the up lever 46 pushes down the cam portion 32 b of the right holder 32, and the right holder 32 and the slider 31 , The left holder 33 and the lid opening holder 39 are rotated. At this time, the rotation of the lid opening holder 39 is regulated by the cam grooves 35a and 36a formed in the right holder guide 35 and the left holder guide L36.

The first switch lever 20 comes into contact with the projection 40p of the drive rack rail 40 while being urged clockwise by a switch lever spring (not shown).
Rotate to the position shown in FIG.
2 is open. The right down rail 44 is urged leftward by a down rail lock 48 and a down rail spring (not shown), and is at a position shown in FIG. 15. The shaft 35 b of the right holder guide 35 is connected to the cam 44 d of the right down rail 44. Since it is inserted at the top, the right holder guide 35 is held at the top. The start sensor 24 is on because it receives the light of the LED 56.

The loading operation of the cassette is started by pushing the right driving rack rail 40 or pushing the cassette 30 downward, and the position shown in FIGS. 16 and 21 is reached. 16 and 21, the up rail 47 is in a free state due to the movement of the right driving rack rail 40, the right holder 32 is rotated counterclockwise by the holder return spring 29, and the holding cassette 30 is also held. It rotates, and the stopper (not shown) of the right holder guide 35 hits the right holder 32 and is held at the horizontal position.

When the right holder 32 rotates, the lock release lever 34 is urged so that the tip 34a faces inward, and is rotatably attached to the right holder 32.
When 2 rises, it is in contact with a cam portion (not shown) of the right holder guide 35, so that the distal end 34a does not protrude inside the right holder 32.

When the right holder 32 rotates and becomes horizontal, the lock release lever 34 does not come into contact with a cam portion (not shown) of the right holder guide 35, so that the tip 34a comes out of the right holder 32. Thus, a lever (not shown) for locking the lid 30a provided on the cassette 30 is pressed, and the lock of the lid 30a is released.

The lid opening holder 39 is provided with the holder guide 3.
5 and the cam grooves (not shown) of the left holder guide 36, the projections 39c and
Since 9d is pushed up, the lid opening holder 39 rotates slightly counterclockwise, and the lid 30a of the cassette 30 is also slightly opened by the claw 39e of the lid opening holder 39.

FIGS. 29 to 32 are views for explaining the operations of the lock release lever 34 and the cover opening holder 39 in further detail. FIGS. 29 and 30 are FIGS.
31 and FIG. 32 are plan and side views corresponding to the state of FIG. 21. 30 and 32 also show partial cross-sectional views.

Referring to these figures, when the right holder 32 is inclined, the lid opening holder 39 rotatably engaged with the holder 32 swings together with the right holder 32. The convex portion 39c of the lid opening holder 39 is rotated clockwise in the drawing by the cam portion 35g of the right holder guide 35 (closed state). Lock release lever 34
Of the right holder guide 35
29 and is rotated clockwise in FIG. 29 against the winding spring 63, and the tip 34 a of the lock release lever 34 is pulled into the right holder 32. Thus, the cassette can be smoothly inserted and removed without being caught on the lock release lever 34 when the cassette is inserted or removed.

On the other hand, when the right holder 32 is in a horizontal state, the lid opening holder 39 swings counterclockwise together with the right holder 32. When the lid-opening holder 39 swings, the convex portion 39c of the lid-opening holder 39 is rotated by the cam portion 35f of the right-side holder guide 35 with the right-side holder 32 as a fulcrum. The lid 30a of the cassette 30 is slightly opened.

When the cassette is loaded in this manner, the cassette 30 is horizontally moved to a predetermined position with the lid 30a slightly opened, so that the cassette 30 does not come into contact with each part such as a draw roller inside the apparatus. The height required for the movement is lower than that required for horizontal movement with the lid 30a kept closed, thereby making it possible to reduce the height of the device.

The lock release lever 34 also swings together with the right holder 32, and the cam portion 35 of the right holder guide 35
e, the other end 34b of the lock release lever 34
Is released, and is urged by the winding spring 63 to rotate in the counterclockwise direction in FIG. 31 so that the tip 34a projects.

Referring again to FIGS. 16 and 21, in this state, the start sensor 24 is in the ON state since it receives the light of the LED 26, but when the right drive rack rail 40 moves further, the LED 56 Is blocked, and the start sensor 24 is turned off. The first switch lever 20 is rotated clockwise by a switch lever spring (not shown) to rotate the first cassette switch 22.
Is closed.

The closed state of the first cassette switch 22 is detected, and the motor 18 is started at a low voltage. The rotation of the motor 18 is transmitted to the pulley 19, the worm gear 16, the worm wheel 12, and the right cam gear 10, and the rotation of the right cam gear 10 is transmitted to the left cam gear 11 through the sync gears 14a and 14b and the main shaft. As a result, the right driving rack rail 40 and the left driving rack rail 41 are moved in the horizontal direction, and moved to the positions shown in FIGS. On the way, the start sensor 24
Is turned off as described above (point A in FIG. 25). The voltage of the motor 18 is switched from low to high by detecting the off point A of the start sensor 24.

In FIGS. 17 and 22, when the right driving rack rail 40 moves as shown in FIG.
6 passes through the hole 40q of the driving rack rail 40,
The start sensor 24 as a detecting means is turned on (point B in FIG. 25). The microcomputer (not shown) as a motor control means applies a short brake to the motor 18 for a certain period of time after detecting the point B, and thereafter, the motor 18
Drive. The point B detected by the start sensor 24 is located just before the end of the horizontal movement.
By once applying the short brake at such a front position, it is possible to reduce the noise and impact when the tray comes into contact with the stopper at the end of the horizontal movement, and the transition from the horizontal operation to the vertical operation in the cassette loading operation can be achieved. You can do it smoothly.

The rack 40c of the right driving rack rail 40
Are formed up to the position shown in FIG. 14, and mesh with the large-diameter gear 10a of the right cam gear 10. The large-diameter gear 10a of the right cam gear 10 also meshes with the rack 44e of the right down rail 44. The guide rail drive shaft 51 implanted on the right guide rail 49 is in contact with the cam 10c of the right cam gear 10.

Here, details of the vicinity of the right cam gear 10 are shown in FIGS.

FIG. 36 shows the large-diameter gear 1 of the right cam gear 10.
0a is not engaged, but the rack gear 44e of the right down rail 44 is formed out of phase with respect to the rack gear 40c of the right drive rack rail 40, and is opposite to the moving direction of the right down rail 44. It is slightly shifted in the direction. Here, as shown in FIG. 35, when the right driving rack rail 40 moves to a position where the right driving rack rail 40 meshes with the large-diameter gear 10a of the right cam gear 10, the right down rail 4
4 does not engage as it is because the rack gear 44e is displaced with respect to the rack gear 40c of the right driving rack rail 40, but moves in the moving direction at the time when it gradually meshes with the large diameter gear 10a of the right cam gear 10. Move,
The phases of the rack gears 40c and 44e are at the same position,
As shown in FIG. 35, a rack gear 40c of the right driving rack rail 40 and a rack gear 44 of the right down rail 44.
e normally meshes with the large diameter gear 10a of the right cam gear 10.

Thus, the phases of the drive rack rail 40 and the rack gears 40c and 44e of the down rail 44 are
Even if there is a slight change due to environmental changes, parts accuracy, etc., meshing with the cam gear 10 is no longer a problem,
The cassette loading device has high reliability and does not generate abnormal noise.

That is, as in the present invention, both rack gears 4
If the same phase is maintained without shifting the phases of the drive rack rail 40 and the down rail 44
37, the rack gear 44e of the right down rail 44 may be slightly shifted to the right with respect to the rack gear 40c of the right drive rack rail 40 as shown in FIG. Therefore, the large-diameter gear 10a of the right cam gear 10 cannot mesh with the large-diameter gear 10 or an abnormal sound is generated or the load increases. On the other hand, the present invention having the above configuration does not have such a problem.

Referring again to FIGS. 17 and 22, the cam 10c has the same amount of horizontal movement of the right drive rack rail 40 by the large-diameter gear 10a and the amount of movement of the guide rail drive shaft 51 by the cam 10c. It has such a shape. The rotation of the right cam gear 10 causes the large-diameter gear 10a of the right cam gear 10 to move the guide rail drive shaft 51 by the cam 10c while meshing with the rack 44e of the right down rail 44, so that the right drive rack rail 40 moves. The relative positions of the down rail 44 and the right driving rack rail 40 remain unchanged in FIGS.
Move to the position shown in.

18 and 23, the projection 40n of the drive rack rail 40 and the bending 1c of the right frame 1 are shown.
7 (see FIG. 7), and the cam 10c of the right cam gear 10 and the guide rail drive shaft 51 are in contact, so that the position of the right drive rack rail 40 is maintained. When the right cam gear 10 further rotates, the right drive rack rail 40 remains as it is and the right down rail 4
Only 4 moves, and the cam 44c of the right down rail 44 presses the convex portion 37a of the right cassette holding lever 37 attached to the right holder guide 35.

The right cassette holding lever 37 rotates counterclockwise to hold the cassette 30 from above.
When the right down rail 44 further moves, the right holder guide 35 descends because the shaft 35b of the right holder guide 35 is inserted into the cam 44d, and the convex portion 37a of the right cassette holding lever 37 is moved by the cam of the right down rail 44. It moves from 44c to the concave portion 40k of the right driving rack rail 40, and comes down to come in contact with the cassette spring 53. By making the concave portion 37a of the right cassette holding lever 37 contact the cassette spring 53, a double-acting mechanism of the right cassette holding lever 37 is made using the force of the cassette spring 53. Cassette 30
Is lowered by being held by the right cassette holding lever 37, the slider 31, the right holder 32, and the left holder L33.

The cassette holding lever 37 for pressing the cassette in this manner is provided on the cassette holding means, and is operated by moving the right down rail 44, so that the cassette spring 5
3, the number of parts can be reduced and the configuration can be simplified as compared with a conventional cassette holding lever which is swingably provided between a pair of frames.

The right skate board lock 26 as a lock lever rotatably mounted on the right frame 1 and urged clockwise by a skate board lock spring (not shown) has a convex portion 26a on the right holder. Since it is in contact with the guide 35, it is held at the position shown in FIG. When the right holder 35 is lowered, the right skateboard lock 26 rotates clockwise, the leading end enters the recess 40r (see FIG. 14) of the right drive rack rail 40, and the right drive rack rail 40 moves in the ejecting direction. Is locked.

As described above, since the movement of the horizontal moving mechanism in the ejecting direction, that is, the movement of the tray in the ejecting direction is prevented by the right skateboard lock 26, the transport is performed as in the conventional example in which the tray is simply stopped by the cam gear. It is possible to prevent the cam gear from being deformed due to a middle shock or the like, thereby causing a malfunction in operation.

When the right holder guide 35 descends, the open lever 60 attached to the mechanical chassis opens the lid opening holder 39 and the lid 30a of the cassette 30.

In FIGS. 19 and 24, when the right down rail 44 moves to the position shown in FIG.
d, the right holder guide 35 is further pushed down, and the cassette 30 is positioned by the positioning pins 55a and 55b implanted in the mechanical chassis 55.
The cassette 30 is loaded by being loaded on the end faces of 5a and 55b and the cassette stays 55c and 55d, and the right pressure spring 57 pressing the shaft 35b of the right holder guide 35 downward. At this time, the down rail lock 48 is
As shown in FIG. 5, the tip 48a is pressed against the inclined surface of the concave portion 44g of the right down rail 44 by being urged clockwise by the down rail lock spring (not shown). Rail 44
Will be biased rightward.

As described above, the right down rail 44 is provided with the down rail lock 48 at both ends of the sliding range.
Thus, for example, as shown in FIG. 15 or FIG. 19, the cassette holder is urged leftward or rightward, thereby holding the cassette holder at a predetermined position. This right down rail 44
Is performed by, for example, a down rail spring 58 as shown in FIG. 27 (eject state) and FIG. 28 (cassette loaded state), in the cassette loaded state shown in FIG. The cassette is urged in the direction of raising the cassette (left direction), and the right down rail 44 is moved by vibration or impact, or the right down rail 44 is moved in FIG.
There is a drawback that the load of the down rail spring 58 becomes a load on the motor when moving from 7 to the state of FIG. 28, but according to this embodiment, there is no such drawback.

The down switch lever 52 rotatably attached to the right down rail 44 moves the shaft 52 a of the down switch lever 52 into the groove 40 h provided in the right drive rack rail 40 by the movement of the right down rail 44.
Rotate along, push the second switch lever 21 and rotate it counterclockwise, the second cassette switch 23 changes from the open state to the closed state (point c in FIG. 25), and a certain period of time when the point C is detected Then, the drive of the motor 18 is stopped, and the loading of the cassette 30 is completed.

The ejection operation is performed in the reverse operation of the loading operation.
, But start with a high voltage. The movement is started from the positions shown in FIGS.
The start sensor 24 is turned on at the position shown in FIG. 21 (point D in FIG. 25), and when this point is detected, the voltage of the motor 18 is dropped from high to low. Thereafter, the cassette 30 comes to the position shown in FIGS. 15 and 20, the cassette 30 is rotated so as to be easily taken out, and the first cassette switch 22 as the detecting means is changed from the closed state to the open state (point E in FIG. 25). The microcomputer as a motor control means (not shown) stops the motor 18 after a certain period of time after detecting the point E, and further applies a short brake to the motor 18. Thereafter, a voltage is applied to the motor 18 in the ejecting direction at a low voltage for a certain period of time, and the ejecting operation ends.

As described above, during the ejecting operation, the motor 18 is temporarily stopped at the end of the horizontal movement in which the tray comes into contact with the stopper.
Is stopped, and then the motor 18 is driven again for a short time. Therefore, it is possible to minimize the movement of the tray in the loading direction due to the recoil of the tray abutting against the stopper and the inclination of the cassette being lowered. It is a high quality cassette loading device.

Since the left side, which is the opposite side, is also driven synchronously by the synchro gears 14a and 14b and the main shaft 13, it is assumed that the up lever 46, the up rail 47 and the down switch lever 52 have no switches. Except for this, the operation is the same.

[0080]

As described above, according to the present invention, the mechanism for inclining the cassette holder on which the cassette is mounted and the mechanism for raising and lowering the holder guide on which the cassette holder is mounted move the cassette holding means in the horizontal direction. Since it is housed in a moving mechanism that does not use an X-type link mechanism as an elevating mechanism, the configuration can be simplified as compared with a conventional example in which various mechanisms are provided on a pair of left and right frames. Become.

Further, according to the first aspect of the present invention, it is possible to reliably prevent the tray from moving in the ejecting direction in the storage state of the tray, and to prevent a trouble due to an impact received during transportation of the device. .

According to the second aspect of the present invention,
During the ejection operation, the tray can be prevented from moving in the loading direction due to the recoil coming into contact with the stopper.

According to the third aspect of the present invention, the transition from the horizontal operation to the vertical operation in the cassette loading operation is performed smoothly.

Further, according to the fourth aspect of the invention, it is possible to effectively prevent the worm gear from moving in the thrust direction and generating a tapping sound in response to a load change on the driven side.

According to the fifth aspect of the present invention,
Even if the phase of the rack gear changes due to environmental changes, component accuracy, and the like, the rack gear can smoothly mesh with the driving gear.

[Brief description of the drawings]

FIG. 1 is a plan view of a cassette loading device of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a plan view of the magnetic tape drive.

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a side view of FIG. 4;

FIG. 7 is a plan view of a driving unit of the cassette loading device.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a plan view of the cassette holding means and the cassette.

FIG. 10 is a front view of the cassette holding means.

FIG. 11 is a side view of the cassette holding means.

FIG. 12 is a plan view of the transfer means.

FIG. 13 is a front view of FIG.

FIG. 14 is a side view of a drive rack rail.

FIG. 15 is a side view of the transfer means.

FIG. 16 is a side view of the transfer means for explaining the operation.

FIG. 17 is a side view of the transfer means for explaining the operation.

FIG. 18 is a side view of the transfer means for explaining the operation.

FIG. 19 is a side view of the transfer means for explaining the operation.

FIG. 20 is a side view of the cassette holding means for explaining the operation.

FIG. 21 is a side view of the cassette holding means for explaining the operation.

FIG. 22 is a side view of the cassette holding means for explaining the operation.

FIG. 23 is a side view of the cassette holding means for explaining the operation.

FIG. 24 is a side view of the cassette holding means for explaining the operation.

FIG. 25 is a timing chart for explaining the operation;

FIG. 26 is an enlarged side view showing the vicinity of the down rail.

FIG. 27 is a side view of a transfer unit having a configuration different from that of the present invention.

FIG. 28 is a side view corresponding to FIG. 27 in a different operation state.

FIG. 29 is a plan view for explaining operations of a lock release lever and a lid opening holder.

FIG. 30 is a side view of FIG. 29.

FIG. 31 is a plan view for explaining operations of a lock release lever and a lid opening holder.

FIG. 32 is a side view of FIG. 31.

FIG. 33 is an enlarged side view of the vicinity of the worm gear.

FIG. 34 is a side view corresponding to FIG. 33 and having a different configuration from the present invention.

FIG. 35 is a side view of the vicinity of a rack gear for explaining the operation.

FIG. 36 is a side view of the vicinity of a rack gear for explaining the operation.

FIG. 37 is a side view of the vicinity of a rack gear for explaining the operation.

[Explanation of symbols]

1, 2, ... frame, 10, 11 ... cam gear, 18 ... motor, 19 ... joint pulley, 26, 27 ... slate plate lock, 30 ... cassette, 32, 33 ... holder, 35, 3
6: Holder guide, 37, 38: Cassette holding lever, 39: Lid opening holder, 40, 41: Drive rack rail, 44, 45: Down rail, 46: Up lever,
47 ... up rail, 49, 50 ... guide rail, 61
... Liquid crystal display.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-138556 (JP, A) JP-A-62-128053 (JP, A) JP-A-61-178774 (JP, A) JP-A-4- 205846 (JP, A) JP-A-4-310666 (JP, A)

Claims (5)

(57) [Claims] 1. A tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device main body, comprising: a cassette holder on which a cassette is placed; A cassette holding means including a pair of holder guides to which the holder is swingably attached, a pair of frames, a pair of lock levers swingably attached to the frame, and a single drive motor; A drive unit including a pair of drive gears that are rotated in synchronization by a drive motor; and a rack gear that meshes with the drive gears, and is moved in the horizontal direction by the power of the drive motor. A pair of moving mechanisms for moving the cassette horizontally between the cassette insertion position and the loading position in the apparatus main body, and A tilting mechanism for tilting or returning the cassette holder is pivoted the cassette holder in the cassette insertion position in response to horizontal movement of the moving mechanism Te, the holder guide is housed in the moving mechanism,
Transfer means including an elevating mechanism for elevating or lowering between the loading position and the cassette loading position, wherein each lock lever of the driving means is moved to the pair of moving mechanisms by the lowering of the holder guide. The moving mechanism is engaged with each of the provided engaging portions to prevent the movement of the moving mechanism. The moving mechanism has the rack gear and the engaging portion and moves in the horizontal direction by the power of the driving motor. A pair of drive rack rails, and a pair of guide rails attached to each drive rack rail, wherein the tilt mechanism slides in a storage portion between the drive rack rail and the guide rail. A member, and a rocking lever that rocks the cassette holder by rocking in response to the sliding of the first sliding member in the storage portion, wherein the lifting mechanism includes: A second sliding member that has a rack gear that meshes with the driving gear and that slides in the housing by the power of the driving motor to move the holder guide up and down; and a sliding of the second sliding member. And a lock member that urges the sliding member in a predetermined direction by engaging an engaging portion formed on the sliding member at both end positions of the cassette loading device. 2. A tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device main body, comprising: a cassette holder on which a cassette is placed; Cassette holding means including a pair of holder guides to which the holder is swingably mounted, a pair of frames, a single drive motor,
The cassette holding mechanism includes a driving unit including a pair of driving gears that rotate in synchronization with the driving motor, and a rack gear that meshes with the driving gear and moves in the horizontal direction by the power of the driving motor. A pair of moving mechanisms for moving the means in a horizontal direction between the cassette insertion / removal position and a loading position in the apparatus main body, and the cassette insertion / removal housed in the movement mechanism and corresponding to the horizontal movement of the movement mechanism A tilting mechanism for tilting or returning the cassette holder by swinging the cassette holder at the position, and raising or lowering the holder guide housed in the moving mechanism between the loading position and the cassette loading position. A transfer means including a lifting mechanism for lowering, and the moving mechanism is provided near the end of the movement toward the cassette insertion / removal position by the power of the drive motor. And a motor control means for temporarily stopping the drive of the drive motor in response to the output of the detection means and then driving the drive motor again for a certain period of time. A pair of drive rack rails having a pair of guide rails attached to each drive rack rail, the pair of drive rack rails moving in the horizontal direction by the power of the drive motor, and the tilting mechanism includes the drive rack rail, the guide rail, A first sliding member that slides in the storage portion between the first storage member and a rocking lever that rocks the cassette holder by rocking in response to the sliding of the first slide member in the storage portion. The lifting mechanism includes a rack gear that meshes with the driving gear, and slides in the storage section by the power of the driving motor to move the holder guide. A second sliding member to be lowered, and a lock for urging the sliding member in a predetermined direction by engaging with engagement portions formed on the sliding member at both ends of sliding of the second sliding member. And a member. 3. A tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device body, comprising: a cassette holder on which a cassette is placed; Cassette holding means including a pair of holder guides to which the holder is swingably mounted, a pair of frames, a single drive motor,
The cassette holding mechanism includes a driving unit including a pair of driving gears that rotate in synchronization with the driving motor, and a rack gear that meshes with the driving gear and moves in the horizontal direction by the power of the driving motor. A pair of moving mechanisms for moving the means in a horizontal direction between the cassette insertion / removal position and a loading position in the apparatus main body, and the cassette insertion / removal housed in the movement mechanism and corresponding to the horizontal movement of the movement mechanism A tilting mechanism for tilting or returning the cassette holder by swinging the cassette holder at the position, and raising or lowering the holder guide housed in the moving mechanism between the loading position and the cassette loading position. A transfer means including a lifting mechanism for lowering, and the moving mechanism reaches a position before the end of the movement toward the loading position by the power of the drive motor. And a motor control means for temporarily stopping the drive of the drive motor for a predetermined time in response to an output of the detection means to brake the movement of the moving mechanism. The moving mechanism includes a pair of drive rack rails having the rack gears and moving in the horizontal direction by the power of the drive motor, and a pair of guide rails attached to each drive rack rail, and the tilting mechanism includes: A first sliding member that slides in a storage section between the drive rack rail and the guide rail; and a cassette holder that swings in the storage section in accordance with the sliding of the first slide member. A swing lever that swings the drive mechanism, the lifting mechanism includes a rack gear that meshes with the drive gear, and slides in the storage section by the power of the drive motor. A second sliding member for raising and lowering the holder guide, and engaging the engaging portions formed on the sliding member at both ends of the sliding of the second sliding member to move the sliding member in a predetermined direction. And a lock member for urging the cassette loading device. 4. A tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device body, comprising: a cassette holder on which a cassette is placed; Cassette holding means including a pair of holder guides to which the holder is swingably mounted, a pair of frames, a single drive motor,
A joint pulley fixed to a shaft of the drive motor, a worm gear whose both ends are supported by the joint pulley and the bearing, and which can rotate integrally with the joint pulley, and a power from the worm gear is transmitted to rotate synchronously. A driving means including a pair of driving gears, and a rack gear meshing with the driving gear, and moving in the horizontal direction by the power of the driving motor to move the cassette holding means to the cassette insertion / removal position. A pair of moving mechanisms for moving horizontally between a loading position in the apparatus main body and a cassette holder housed in the moving mechanism and swinging the cassette holder at the cassette insertion / removal position according to the horizontal movement of the moving mechanism; A tilting mechanism for tilting or returning the cassette holder, and the holder guide housed in the moving mechanism,
Transfer means including an elevating mechanism for raising or lowering between the loading position and the cassette loading position, wherein between the worm gear and the coupling pulley of the driving means, play in the thrust direction of the worm gear is provided. An elastic member for absorbing is interposed, and the moving mechanism includes a pair of drive rack rails having the rack gear and moving in the horizontal direction by the power of the drive motor, and a pair of guide rails attached to each drive rack rail. And the tilting mechanism includes:
A first sliding member that slides in a storage section between the drive rack rail and the guide rail; and a cassette holder that swings in the storage section in accordance with the sliding of the first slide member. A lifting lever that rocks the holder guide, the lifting mechanism having a rack gear meshing with the driving gear, and sliding the holder guide up and down by sliding the inside of the storage section by the power of the driving motor. A second sliding member, and a locking member that urges the sliding member in a predetermined direction by engaging with engagement portions formed on the sliding member at both ends of the sliding of the second sliding member. A cassette loading device comprising: 5. A tray type cassette loading device provided in a device for loading a cassette and for inserting and removing a cassette at a cassette insertion / removal position outside the device body, comprising: a cassette holder on which a cassette is placed; a cassette holding means comprising a pair of holder guide the holder is mounted swingably, and a pair of frames, each swinging the pair of frame
A drive means including a pair of lock levers mounted so as to be capable of being driven, a single drive motor, and a pair of drive gears rotated in synchronization by the drive motor; and a rack gear meshing with the drive gear. A pair of moving mechanisms for moving the cassette holding means in the horizontal direction between the cassette insertion / removal position and the loading position in the apparatus main body by moving the cassette holding means in the horizontal direction by the power of the drive motor; A tilt mechanism that is housed in a mechanism and tilts or returns the cassette holder by swinging the cassette holder at the cassette insertion / removal position according to the horizontal movement of the moving mechanism; and the holder that is housed in the moving mechanism. Transfer means including a lifting mechanism for raising or lowering the guide between the loading position and the loading position of the cassette; The clever engages with each of the engaging portions provided on the pair of moving mechanisms by lowering the holder guide, and prevents movement of the moving mechanism. The moving mechanism includes the rack gear. Including a pair of drive rack rails that move in the horizontal direction by the power of the drive motor, and a pair of guide rails attached to each drive rack rail, the tilting mechanism, between the drive rack rail and the guide rail A first sliding member that slides in the storage portion, and a rocking lever that rocks the cassette holder by rocking in response to the sliding of the first sliding member in the storage portion; An elevating mechanism having a rack gear meshing with the driving gear and sliding the holder guide up and down by sliding the inside of the storage section by the power of the driving motor; 2
A sliding member, and a lock member that urges the sliding member in a predetermined direction by engaging engagement portions formed on the sliding member at both end positions of sliding of the second sliding member. A cassette loading device, wherein the phases of the rack gear of the second sliding member and the rack gear of the drive rack rail are slightly shifted in a certain direction.