JPH01236452A - cassette loading device - Google Patents

Abstract

PURPOSE:To omit a synchronizing mechanism and to reduce the size of a cassette loading device by revolving a shaft via a drive means, sliding the 1st and 2nd loading racks via the 1st and 2nd drive arms respectively and transferring a holder means. CONSTITUTION:When a shaft 76 is revolved by a drive means, a drive arm 78b fixed to the shaft 76 is revolved. Then the 1st and 2nd loading racks 40 connected to the arm 78b are simultaneously driven and slided. Thus the gears 34a and 34b meshing the rack 40 are revolved and at the same time the loading arms 31a and 31b are revolved together with both gears 34a and 34b. Then the holder shafts 47a and 47b of a holder means kept in the grooves of both arms 31a and 31b are driven and the holder means is transfered along the L-shaped guide holes 25c and 25d. In this case, the open angles of both holes 25c and 25d are set smaller than 90 deg.. Thus a cylinder head, etc., can set at the side of the guide hole and therefore the size of a cassette loading device is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device used in a vehicle-mounted magnetic recording and reproducing device for recording or reproducing digital audio signals.

BACKGROUND ART Conventionally, cassette loading devices have been known that transport a cassette, such as an audio cassette or a video cassette, to a recording/playback position or eject it from the recording/playback position to a cassette insertion slot. For example, JP-A-53-6
In Publication No. 007 (Special Publication No. 60-16017),
A cassette loading device is described in which a holder for holding a cassette is guided by L-shaped guide holes formed in left and right side plates. In this device, a gear train was provided on each of the left and right side plates, a spring was stretched between the gears of each gear train, and the elastic force of the spring was used to transport the cassette.

Further, in conventional devices of this kind, the opening angle of the L-shaped guide hole for guiding the holder is 90 degrees, and parts such as the cylinder head are arranged at locations where movement of the holder is not hindered.

Problems to be Solved by the Invention However, in the conventional cassette loading device, a drive mechanism for guiding and driving the holder along an L-shaped guide hole is provided on each of the left and right side plates, and the opening drive mechanisms are synchronized. In order to operate it, a shaft was provided between the left and right side plates, and a small gear provided at the end of this shaft was meshed with the gears of each drive mechanism. In this way, the conventional cassette loading device of this type requires a drive mechanism on each of the left and right side plates, and a synchronization mechanism to operate the opening drive mechanisms in synchronization, resulting in a complicated configuration and the need for a synchronization mechanism. There was a problem that the left and right sides could not be synchronized due to backlash of the gears, twisting of the synchronization shaft, etc.

In addition, in the conventional device described above, the opening angle of the L-shaped guide hole is 90°, which forces components such as the cylinder head to be placed away from the movement range of the holder, making it impossible to miniaturize the device. There was a problem.

The present invention solves the above-mentioned conventional problems, and provides a cassette loading device that does not require a synchronization mechanism and can be miniaturized.

Means for Solving the Problems In order to achieve the above object, the present invention provides a holder means for holding a cassette, and a left and right holder formed with an L-shaped guide hole for guiding a holder shaft provided in the holder means. a side plate, a gear rotatably supported on each of the left and right side plates, a loading arm that has a groove into which the holder shaft is inserted and rotates together with the gear, and a loading arm that is slidable on each of the left and right side plates. first and second loading racks supported by the gears and meshing with the gears; a shaft rotatably supported by the left and right side plates; The apparatus is characterized by comprising first and second drive arms connected to a loading rack, and a drive means for rotationally driving the shaft.

Further, the present invention is characterized in that the opening angle of the left and right L-shaped guide holes is smaller than 90°.

Operation The present invention has the above-mentioned configuration, and when the shaft is rotationally driven by the driving means, the driving arm fixed to the shaft rotates, and the first and second shafts connected to the driving arm rotate. drive and slide the loading racks at the same time. When the loading rack slides, the gear meshing with the loading rack rotates, the loading arm rotates together with the gear, and the holder shaft of the holder means inserted into the groove of the loading arm is driven. The means is transported along the L-shaped guide hole.

Furthermore, in the present invention, the opening angle of the L-shaped guide hole is 90°.
Since the cylinder head and other parts can be placed closer to the guide hole than in the conventional example, the device can be made smaller.

EXAMPLE An example of the present invention will be described below with reference to the drawings. This embodiment is a cassette loading device for a magnetic recording/reproducing device mounted on a vehicle.

1 and 2 show a cassette containing a magnetic tape on which digital audio signals are magnetically recorded. In FIGS. 1 and 2, 1 is a case body, and inside this case body Two reels are rotatably supported, and magnetic tape is wound around these reels. 2 and 3 are holes formed on the lower surface of the case body 1;
A reel drive shaft is inserted from the outside through 3 and engages with the reel. When the reel drive shaft rotates, the reel is driven and the magnetic tape is run. 4 is the case body 1
The lid is rotatably supported by a shaft 5, and this lid 4
One side of the case body 1 is opened and closed. Lid 4
is opened (and a part of the magnetic tape stored in the case body 1 is exposed and can come into contact with the rotating head. 6 is a sliding plate slidably supported on the lower surface of the case body 1, Holes 7 and 8 are formed in this sliding plate 6. The holes 2 and 3 of the case body 1 are normally closed by the sliding plate 6, but when the sliding plate 6 slides backward, Then, the hole 7 of the sliding plate 6,
8 coincides with the holes 2 and 3 of the case body 1, and the reel drive shaft can be engaged with the reel from the outside. 9 is a lock piece formed on the lower surface of the case body 1, and this lock piece 9 is
It is engaged with an engagement hole 10.11 formed in the sliding plate 6.

13 is a notch formed at the end of the lid 4.

The cassette is inserted into the cassette insertion slot of the magnetic recording/reproducing device in the direction shown by arrow A in FIG. and set at the recording/playback position.

During this cassette transfer process, the sliding plate 6 is slid and the lid 4 is opened. When recording or reproduction on the cassette is completed and the cassette is to be ejected, the cassette is transported in the opposite direction to the cassette transport direction and ejected to the cassette insertion slot.

Next, the configuration of the loading device for transporting the cassette will be explained with reference to FIGS. 3 to 5. Figures 3 to 5
In the figure, 20 is a holding plate in which a square hole 20a is formed, 22 is a cam plate rotatably supported by a shaft 21a implanted on the lower surface of the holding plate 20, and one end of this cam plate 22 is A long hole 22a is formed. 2
2b is a roller provided at the other end of the cam plate 22;
22c is a spring supported by the shaft 21a, and the cam plate 22 is biased in one direction by the spring 22c. Reference numeral 23 denotes a lock plate rotatably supported by a shaft 21b installed on the lower surface of the holding plate 20, and this lock plate 23 has a recessed portion where the roller 22b of the cam plate 22 is locked. An inclined portion 1 23b is formed with which the roller 23a and the roller 22b come into contact. Reference numerals 24 and 25 denote a left side plate and a right side plate screwed to the left and right lower surfaces of the holding plate 20, respectively, and long guide holes 2 are provided in the left side plate 24 and right side plate 25.
4a, 24b, 25a, 25b and L-shaped guide hole 2
4c, 24d, 25c, and 25d are formed. Note that the above-mentioned cross-shaped guide holes 24c, 24d, 25c, 25
The opening angle of d is smaller than 90" as shown in FIG. It is fixed to the fixed pieces 26 and 27 mentioned above.

The magnetic recording and reproducing mechanism section 28 has a reel drive shaft 88a that engages with the reel in the cassette and rotates the reel.
, 88b, roller posts 89a, 89b for pulling out the magnetic tape from inside the cassette, inclined posts 90a, 90
b. It consists of a cylinder head 91 for recording and reading signals on magnetic tape.

29a and 29b are shafts 24e and 2 fixed to the left side plate 24.
4f is a loading arm rotatably supported, and these loading arms 29a and 29b have grooves 30.
a and 30b are formed. Similarly, the shaft 2 of the right side plate 25
Low day jig arms 31a and 31b are rotatably supported by 5e and 25f. 32a and 32b are grooves formed in the loading arms 31a and 31b, respectively. 33a, 33b, 34a, 34b are each shaft 24e
, 24f, 25e, 25f, and these gears 33a, 33b, 34a, 34b.
On one side of the bottle 35a.

35b, 36a, and 36b are fixed. Gear 3 above
3a, 33b, 34a, 34b bins 35a, 35b,
36a and 36b are the loading arms 29a, respectively.
, 29b, 31a, 31b holes 37a, 37b, 38a
, 38b, and for this purpose the gears 33a, 3
3b, 34a, 34b and loading arms 29a, 2
9b, 31a, and 31b each rotate integrally. 3
9.40 is the bottle 24g on the left and right side plates 24.25, 2
4h, 25g, and 25h are slidably supported, and these loading racks 39.4
The 0 teeth mesh with the gears 33a, 33b, 34a, and 34b. 39a is a switch driving protrusion integrally formed on the loading rack 39. Reference numerals 41 and 42 denote sliding members that are slidably supported by the loading racks 39 and 40. 41c is a switch driving protrusion integrally formed on the sliding member 41. Reference numeral 43.44 denotes a spring whose one end is locked to the loading rack 39.40 and the other end is locked to the sliding member 41.42, and the elastic force of this spring 43.44 causes the sliding member 4 to
1.42 is biased in one direction against the loading rack 39.40. 45 is a holder for holding the cassette, and on both sides of this holder 45 there are L-shaped holes 24c*24d in the left side plate 24, right side plate 25,
Holder shafts 46a and 46b inserted into 25c and 25d
, 47a, 47b are fixed. This holder shaft 4
6a, 46b, 47a, 47b are the above-mentioned cross-shaped holes 24
C, 24d.

25c and 25d, and then the loading arm 2
Grooves 3da, 30b, 3 of 9a, 29b, 31a, 31b
2a and 32b. A holder plate 48 is screwed onto the upper surface of the holder 45, and the holder 45 and the holder plate 48 constitute a holder member that holds the cassette. A leaf spring 49 has one end fixed to the holder plate 48, and the free end of the leaf spring 49 is provided with a claw 50 that engages with a recess 12 formed on the upper surface of the cassette. Reference numeral 51 denotes a stopper piece formed on the holder 45. This stopper piece 51 engages with the front end of the sliding plate 6 of the cassette inserted into the holder 45, and the cassette is inserted into the holder 4.
5, the front end of the sliding plate 6 of the cassette engages with the stopper piece 51, and the sliding plate 6 is prevented from moving forward by the stopper piece 51, but the case body 1 moves forward. , the sliding plate 6 moves backward with respect to the case body 1, so that the holes 7 and 8 of the sliding plate 6 coincide with the holes 2.3 of the case body 1, and the reel drive shafts 88a and 88b align with the holes 7.8 of the case body 1. ,2.3
It can be inserted into the cassette through the cassette. 52 is a carrier, and the long guide holes 24a, 24b, 25a, 25 of the left side plate 24 and the right side plate 25 are formed on the side of this carrier 52.
The bottles 53a, 53b, and 53c inserted in b.

53d is planted. This carrier 52 is guided by the guide holes 24a, 24b, 25a, and 25b and slides in the horizontal direction. Reference numeral 54 denotes a leaf spring whose one end is fixed to the carrier 52, and the free end of the leaf spring 54 is provided with a claw 55 that engages with the recess 12 of the cassette.

This claw 55 is for locking the cassette so that it does not fly out when the cassette is ejected. 56a
.

Reference numeral 56b denotes a guide hole formed in a vertical direction on the side surface of the carrier 52, and the guide holes 56a, 56b are filled with the bins 45a, 4 formed on the side plate of the holder 45.
5b is inserted. Reference numeral 57 denotes an L-shaped lever rotatably supported by the shaft 52a of the carrier 52, and a roller 57a inserted into the elongated hole 22a of the cam plate 22 is supported at one end of the lever 57. 58 is a lever rotatably supported by the shaft 52b of the carrier 52, and 59 is a spring that biases the lever 58 in one direction. The bottle 60 implanted in the lever 57 is inserted into an arc-shaped hole 61 formed in the other lever 58. Also, the other ends of the levers 57 and 58 are provided with cassette lids 4 and 58, respectively.
Rollers 62 and 63 that abut against the front surface of the roller are rotatably supported. 64 is a lid opening/closing lever rotatably supported on the inner surface of the right side plate 25, and 65 is a spring biasing the lid opening/closing lever 64 in one direction. The lid opening/closing lever 64 is provided with a recess 64a against which a bottle 66 implanted inside the right side of the holder 45 contacts, and a locking portion 64b against which the lower right end of the cassette lid 4 contacts, so that the cassette can be moved vertically. When the cassette is transferred, the lid 4 of the cassette comes into contact with the locking portion 64b of the lid opening/closing lever 64 and is opened.

67 is a drive unit board screwed to the rear of the left and right side plates 24.25, 68 is a motor fixed to the bottom of the drive unit board 67, 69 is a solenoid screwed to the drive unit board 67, and 70 is a drive This is a sub-board fixed to the center of the unit board 67, and a slider 71 is slidably supported on this sub-board 70. The engaging portion 71a of this slider 71 is the movable piece 69a of the solenoid 69.
is engaged in. 71b is a drive shaft fixed to the slider 71, and this drive shaft 71b is connected to the lock plate 2.
It is inserted into the hole 23c of No.3. Gears 72 and 73 are rotatably supported on shafts 67a and 67b implanted in the drive unit board 67.

74 is a gear rotatably supported by the shaft 74a of the sub-board 70, 75a and 75b are bearings provided in the holes of the drive unit board 67, and the shaft 76 is rotatably supported by the bearings 75a and 75b. ing. 77 is a worm gear fixed to the shaft 76, 78a and 78b are drive arms screwed to the end of the shaft 76,
Long holes formed at the tips of the driving arms 78a, 78b are inserted into the pins 41a, 42a of the sliding members 41.42. The rotational driving force of the motor 68 is generated by a worm gear 68A fixed to the rotating shaft of the motor 68, a gear? 2,7
3.74 to the worm wheel 77, and the shaft 76 is rotationally driven. When the shaft 76 rotates,
Sliding members 41.42 connected to the drive arms 78a, 78b via pins 41a, 42a are driven, and the loading racks 39.42 are driven via springs 43.44.
40 is also driven, and gears 33a, 33b, 34a, 34b meshing with this loading rack 39, 40 rotate. Furthermore, when the solenoid 69 is excited, the movable piece 6
9a is attracted, the slider 71 that engages with this movable piece 69a slides, and the drive shaft 7 provided on this slider 71
The lock plate 23 is driven by 1b, and the lock plate 23 rotates.

Reference numeral 79 denotes a dust cover rotatably supported by the front projections of the left and right side plates 24 and 25. Next, a mechanism for opening and closing this dust cover 79 will be explained. 80 is a slider in which oblique long holes 80a, 80b are formed and a bottle 80c is fixed at the tip;
80b is slidably supported by a bottle installed on the left side plate 24. A rotary lever 81 is rotatably supported by the left side plate 24, and holes are formed at both ends of the rotary lever 81, respectively. A pin 80d provided at the other end of the slider 80 is inserted into one hole of the rotary lever 81, and the slider 80 and the rotary lever 81 are connected via the pin 80d. Reference numeral 82 denotes a rotating arm that is rotatably supported by the left side plate 24. A bottle formed on this rotating arm 82 is inserted into another hole of the rotating lever 81, and the rotating arm is rotated through the via. The arm 82 and the rotating lever 81 are coupled. 83 is the above-mentioned rotating arm 82
It is a spring that biases in one direction. 84 is a first switch attached to the drive unit board 67, and this first switch 84 is driven by the slider 71.

85 is a switch board on which second and third switches 86 and 87 are fixed, and this switch board 85 is attached to the left side plate 2.
It is fixed at 4. The second switch 86 is driven by the switch driving protrusion 39a of the loading rack 39, and the third switch 87 is driven by the switch driving protrusion 41c of the sliding member 41.

Next, the operation of the loading device will be explained. First, the operation of transporting the cassette to the recording/reproducing position will be explained.

When a cassette is inserted into the cassette insertion opening closed by the dust cover 79, the dust cover 79 is rotated inward by the inserted cassette. The inserted cassette enters the holder 45 and slides onto the cassette sliding plate 6.
The front end of the holder 45 engages with the stopper piece 51 of the holder 45.

Therefore, only the case body 1 moves forward while the sliding plate 6 is prevented from moving forward, and the sliding plate 6 moves relative to the case body 1.
A part of the lower surface of the case body 1 is opened (.Also, when the cassette is inserted into the holder 45, the rollers 62 and 63 are pushed by the front end of the cassette, and the levers 57 and 58 are rotated, and the lever 57 is moved to the roller 57a. The cam plate 22 connected via the cam plate 22 also rotates. When the cam plate 22 further rotates, the roller 22b of the cam plate 22 engages with the recess 23a of the lock plate 23, and the cam plate 22 is locked by the lock plate 23. Since the slider 71 is connected to the lock plate 23 via the drive shaft 71b, the lock plate 2
When the slider 71 rotates, the slider 71 slides.
As a result, the first switch 84 is turned on.

When the first switch 84 is turned on, the motor 68 rotates. The rotational driving force of the motor 68 is generated by a worm gear 68a,
As a result of being transmitted to the shaft 76 via the gears 72, 73, 74 and the worm gear 77, the shaft 76 rotates,
Drive arm 78a.

78b pushes the bottles 41a and 42a simultaneously. The driving force applied to the bins 41a, 42a is applied to the loading rack 39.40 via the spring 43.44, causing the loading rack 39.40 to move forward. When the loading rack 39.40 moves forward,
Gear 33 meshing with this loading rack 39.40
a, 33b, 34a, and 34b rotate, and loading animations 29a, 29b, 31a, and 31b also rotate.

The grooves 30a, 30b, 32a, 32b of the loading arms 29a, 29b, 31a, 31b have holders 45
Since the holder shafts 46a, 46b, 47a, 47b are inserted, the loading arms 29a, 29b, 3
When 1a and 31b rotate, holder shafts 46a and 46b
, 47a, 47b are driven, and this holder shaft 46a,
48b.

47a and 47b are guided by L-shaped guide holes 24c, 24d, 25c, and 25d in the left and right side plates 24.25 to move rearward. Note that the bottles 45a and 45b are attached to the holder 45.
The carrier 52 connected via the holder 45 also moves rearward together with the holder 45. Since the carrier 52 is guided by the linear guide holes 24a, 24b, 25a, and 25b,
While the holder 45 moves only in the horizontal direction, the holder 45 also moves downward because it is guided by the L-shaped kite holes 24c, 24d, 25c, and 25d.

Therefore, the cassette held in the holder 45 also moves horizontally and vertically. As the cassette moves downward,
As a result of the cassette lid 4 coming into contact with the locking portion 64b of the lid opening/closing lever 64, the cassette lid 4 opens. When the cassette is transferred to the bottom, the switch driving piece 41 of the sliding member 41
c, the third switch 87 is turned on, and the loading of the cassette is completed.

In this way, when the cassette is transported to the recording/reproducing position, the reel inside the cassette is moved to the magnetic recording/reproducing mechanism section 2.
The magnetic tape in the cassette is engaged with the reel drive shafts 88a and 88b of 8, and the magnetic tape in the cassette is moved by the moving roller posts 89a and 88.
9b, pulled out by inclined posts 90a, 90b;
The cylinder head 91 is contacted. In this state, the magnetic tape is run by the driving force of the reel drive shafts 88a and 88b, and the cylinder head 91 records or reads signals on the magnetic tape.

Next, an eject operation for ejecting the cassette to the cassette insertion slot after recording or reproduction on the magnetic tape is completed will be described.

When an eject command is input, the solenoid ρ69 is excited and the movable piece 69a is attracted. Therefore, the slider 71 engaged with the movable piece 69a slides, and the lock plate 23 connected via the drive shaft 71b rotates. Therefore, the cam plate 22 is unlocked by the lock plate 23. Also slider 7
1, the first switch 84 is turned off, and the motor 68 rotates in the direction opposite to the direction of rotation during loading. Therefore, contrary to the loading process, the holder 45 first moves upward, then moves horizontally, and is transferred to the cassette insertion slot. In this ejecting operation, the switch driving piece 39a of the loading rack 39 that moves rearward drives the second switch 86, and this second
The process ends when the switch 86 is turned on. Note that during the eject operation, when the holder 45 moves horizontally, the carrier 52 also moves with the movement of the holder 45, so the levers 57.58 rotate, and the levers 57.58 rotate.
Rollers 62 and 63 supported at the tip of the roller 58 push the cassette held by the holder 45 toward the cassette insertion slot. In this embodiment, the cassette is placed in the holder 4.
In addition to transferring the cassette with the levers 57 and 58, the cassette held in the holder 45 is slowly pushed out using the levers 57 and 58, and the cassette can be smoothly ejected and the amount of cassette ejected can be kept constant. can.

As described above, in this embodiment, when the shaft 76 is rotationally driven, the drive arm 78a fixed to the shaft 76 is rotated.
, 78b, left and right loading rack 39.4
0 is slid at the same time.

Therefore, the left and right holder shafts 46a, 46b, 47a, and 47b of the holder 45 can be driven in the same way even without a synchronization mechanism.

Further, in this embodiment, the L-shaped guide holes 24c, 24d
, 25c, and 25d are made smaller than 90 degrees, parts such as the cylinder head 91 can be placed closer to the front side, and in particular, the depth of the device can be reduced.

Effects of the Invention The present invention has the above-mentioned configuration, and when the shaft is rotated by the driving means, the first
Since the second drive arm simultaneously drives the first and second loading racks that are slidably supported on the left and right side plates, the holder can be used even without a synchronization mechanism to synchronize the first and second loading racks. The left and right holder shafts of the means can be driven in the same way, and since a synchronization mechanism like the conventional example is not required, the structure has the advantage of being simple.

Further, according to the present invention, since the opening angle of the L-shaped guide hole is formed to be smaller than 90°, there is an advantage that the device can be made smaller.

[Brief explanation of the drawing]

1 and 2 are perspective views of a cassette used in a cassette loading device according to an embodiment of the present invention, FIG. 3 is a perspective view of the cassette loading device, and FIG. 4 is a side view of the cassette loading device. Fig. 5 is an exploded perspective view of the cassette loading device, Figs. 6 (A) to (D) are explanatory diagrams of the operation of the dust cover of the cassette loading device, and Fig. 7 is an L formed on the side plate of the cassette loading device. It is a figure which shows the letter-shaped guide hole. 1...Case body, 2.3...hole, 4...-lid, 5
...shaft, 6...sliding plate, 7.8...hole, 9...
Lock piece, 10.11... Engagement hole, 12... Recessed part,
13... Notch, 20... Holding plate, 21a, 21b
---Shaft, 20b, 20c...Shaft, 22...Cam plate, 22a...Elongated hole, 22b...Roller, 22
c... Spring, 23... Mouth plate, 23a.
... Recessed portion, 23b... Inclined portion, 23c... Hole, 24
...Left side plate, 24a, 24b...Guide hole, 24c
, 24d... L-shaped guide hole, 24e, 24f...
・Shaft, 24g, 24h --- Bin, 25...Right side plate,
25a, 25b...guide hole, 25c, 25d...
L-shaped guide hole, 25e, 25f ---shaft, 25g
, 25h--Bin, 26.27--Fixing piece, 28-
...Magnetic recording and reproducing mechanism section, 29a, 29b...Loading arm, 30a, 30b...Groove, 31a, ff
1b...Loading arm, 32a. 32b---Groove, 33a, 33b... Gear, 34a,
34b...-Gear, 35a, 35b... Bin, 36a
e 36b `` ''' Bin, 37a, 37b @ 11
6 holes, 38a, 38b...holes, 39...loading rack, 39a...switch drive protrusion, 40...
・Loading rack, 41 sliding member, 41a=・bin, 41b...bin, 41c...switch driving protrusion, 42...sliding member, 42a...bin, 43.44
...Spring, 45...Holder, 45a, 45
b...Bin, 46a, 46b...Holder shaft, 47
a, 47b---Holder shaft, 48... Holder plate, 49... Leaf spring, 50... Claw, 51... Stopper piece, 52... Carrier, 52a, 52b ・
--Axle, 53a, 53b, 53c, 53d wine...bottle,
54---Plate spring, 55...Claw, 56a, 56b...
・Guide hole, 57... L-shaped lever, 57a...
Roller, 58... Lever, 59 tatami - Spring, 60...
- Bottle, 61... Arc-shaped hole, 62, 63... Roller, 64... Lid opening/closing lever, 64a... Recess, 6
4b...Locking portion, 65...Spring, 66.e.bin,
67... Drive unit board, 67a, 67b... Shaft, 68---Motor, 6'8a... Worm gear, 6
9... Solenoid, 69a... Movable piece, 70...
Sub-board, 71...Slider, 71a...Engaging portion, 7
1b... Drive shaft, 72.73... Gear, 74...
Gear, 74a...shaft, 75a. 75b...Bearing, 76...Shaft, 77...
Worm gear, 78a, 78b... drive arm, 79
...Dust cover, 80...Slider, 80a, 8
0b...Long hole, 80c, 80d...Bin, 81.-
- Rotation 1<-182... Rotating arm, 83... Spring, 84... First switch, 85... Switch board, 86... Second switch, 87... Third switch, 88a, 88b... Reel drive shaft, 89a+
89b-* so-Labost, 90a, 90b...'
Inclined post, 91... cylinder head. Name of agent: Patent attorney Toshio Nakao and one other person (see Figure 1)

Claims (2)

[Claims] (1) A holder means for holding a cassette, left and right side plates provided with an L-shaped guide hole for guiding a holder shaft provided in the holder means, and rotatably supported by each of the left and right side plates. a loading arm that has a groove into which the holder shaft is inserted and rotates together with the gear; and first and second loading arms that are slidably supported by the left and right side plates and mesh with the gear. a rack, a shaft rotatably supported by the left and right side plates, and first and second drive arms fixed to the ends of the shaft and whose tips are connected to the first and second loading racks. and a drive means for rotationally driving the shaft, the drive means rotates the shaft, the first and second drive arms slide the first and second loading racks, and the drive means rotates the shaft, and the first and second drive arms slide the first and second loading racks. A cassette loading device characterized by moving holder means. (2) The cassette loading device according to claim 1, wherein the opening angle of the L-shaped guide holes formed in the left and right side plates is smaller than 90°.