JPS63247945A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To make quick and highly reliable cassette loading with a simple constitution, by detecting the size of a tape cassette and vertically moving the cassette after the cassette is horizontally moved, with the interval between the centers of reel turntables being made to correspond to the size of the cassette, while the cassette is horizontally moved. CONSTITUTION:The size of a cassette is discriminated by means of cassette size detection amplifiers 50-52 and a cassette size discriminating circuit 88 and the cassette is moved in the horizontal direction during the period from the setting of a holding circuit 56 through a pulse generating circuit 82 to the resetting of the circuit 56 by the output of an intermediate position detection amplifier 54 by means of a motor driving circuit 58 and cassette moving motor 15. During the period of the horizontal movement, a reel turntable moving motor 36 is similarly controlled and the interval between the centers of the reel turntables is adjusted. Outputs of reel interval/position detection amplifiers 62-64 corresponding to the size of the cassette passed through switches 89-91 which work in response to the discrimination output of the circuit 88 are work in response to the discrimination output of the circuit 88 are impressed upon a pulse generating circuit 85. Then the motor 15 is similarly controlled and the cassette is moved in the vertical direction. Thus quick and highly reliable cassette loading can be performed with a simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus for recording and reproducing video signals, and particularly to a cassette type magnetic recording and reproducing apparatus.

BACKGROUND OF THE INVENTION Conventional magnetic recording and reproducing devices include, for example,
It is shown in the publication No.-111360.

Conventional examples are shown in FIGS. 8 to 12. FIG. 8 is a perspective view of the entire tape cassette drive mechanism, and FIGS. 9 to 11 are
FIG. 3 is a longitudinal cross-sectional view illustrating the driving operation of the cassette. This tape cassette drive machine 4A5 moves the cassette holder 6 to the ninth position.
It reciprocates along a substantially L-shaped locus between the cassette insertion position (as shown in the figure) and the cassette mounting position (as shown in FIG. 11) (as shown in FIG. 11).

In FIG. 8, on both left and right sides of the cassette boulder 6,
A pair of rack plates 7 are fixed vertically, and racks 8 are formed in an L-shape at the front and lower end portions of both rack plates 7, respectively. Further, a pair of support plates 10 are vertically fixed on the chassis 9 at the left and right sides of the cassette bolter 6. The upper ends of both support plates 10 are connected by a pair of front and rear connecting plates 11a and 11b. and 3 each rotatably mounted between the outer sides of both rack plates 7.
Three guide rollers 12 are slidably engaged with three guide grooves 13 provided on both support plates 10, respectively. The guide groove 13 is formed in an inverted letter shape that is symmetrical to the letter 1 shape of both racks 8. A pair of binions 14 rotatably supported by both support plates 10 are engaged with both racks 8, and are interlocked between a reduction mechanism 16 having a worm gear and both binions 14 by a motor 15 attached to the chassis 9''. Both binions 14 are configured to be driven to rotate in forward and reverse directions via a shaft 17.

In this configuration, the following operations are performed.

First, when installing a cassette, a large force is inserted into the cassette holder 6 from the cassette insertion opening 20 provided on the side panel 19, as shown in FIG. - One of medium force set, small cassette, 1.2.3 is selectively inserted horizontally from the direction of arrow a.

Next is this cassette!・After selectively inserting the large cassette l-, medium force set, and small cassette 1.2.3 into the holder 6 (
Fig. 9 (Small cassette shown) Cassette transfer motor 1
5 is driven to rotate in the forward direction, and both binions 14 are driven to rotate in the direction of the arrow in FIG.

Then, both racks 8 are driven by both pinions 14, and the cassette holder 6 is moved from the insertion position shown by the solid line in FIG. 9 to the dashed line in FIG. After being retracted horizontally in the direction of arrow C in Fig. 10 to the retracted position shown,
Continue to descend vertically in the direction of arrow d in Figure 10 to reach the 11th
The cassette is moved forward along an L-shaped trajectory to the cassette mounting position shown in the figure.

Next, when taking out the cassette, the cassette transfer motor 15 is driven to rotate in the opposite direction, and both binions 14 are driven to rotate in the opposite direction in the direction of the arrow e in FIG.

Then, both racks 8 are driven by both peons 14, and the cassette bolter 6 performs the reverse operation when inserting a cassette.
The cullet is lifted vertically in the direction of arrow f in FIG. 11 from the cullet installation position 1n in the figure to the retracted position shown by the dashed line in FIG. Then, the cassette is moved back to the cassette insertion position shown in FIG.

Next, the reel table moving mechanism 25 will be explained using the twelfth threshold. The reel table moving mechanism 25 has a pair of left and right cassettes provided at the cassette mounting position according to the sizes of the large cassette, medium power set, and small cassette 1.2.3 selectively inserted into the cassette holder 6. Reel stand 26 a % 26 b
, the large positive iPa, I, and Pbl corresponding to the large cassette 1, and the intermediate positive i? corresponding to the middle force set 2? Z
Pa2, and P II) 2 and 71 in small y set 3
It moves in the arrow 1] and i direction between the corresponding booth positive 1ffPa3 and Pb3.

At this time, on the chassis 9 at the cassette device position, a pair of left and right sliding tables 30a, 30b are installed, each pair of guide shafts 31
a, 31b so as to be movable horizontally in the directions of arrows and i.

A pair of reel motors 32a, 32b are attached to the lower portions of both sliding tables 30a, 30b.
Motor shaft 32a of both reel motors 32a, 32b
Both reel stands 26a, 26b are fixed to the upper ends of ", 32b'. Also, both reel stands 26a, 26b are configured to be moved by, for example, a pair of left and right interlocking levers 33a, 33b. and both drive levers 33a.
One end of 133b is fixed to a pair of left and right rotating shafts 34a and 34b that are rotatably supported on the chassis 9, and a pair of gears 35a and 35b that are engaged with each other are attached to both rotating shafts 34a and 34b. It is fixed. Further, one gear 35a is driven in forward and reverse rotation by a motor 36 mounted on the chassis 9 via a reduction mechanism 37 having a τ form gear.

The reel table moving mechanism 25 is constructed as described above and operates as follows.

That is, when the motor 36 is driven to rotate forward, both gears 35a
, 35b, both drive levers 33a and 133b move as shown by arrow j.
rotationally driven in the direction. Then both drive levers 33a
, 33b, both sliding tables 30a and 30b are moved in the direction of the arrow, and the two sliding tables 26a and 26b are moved to intermediate distance positions Pa2 and Pb2 or booth positive raPa3 and Pb3. And both reel stands 26a, 2
Intermediate interval 12 where the center interval of 6b corresponds to intermediate force set 2
, or automatically adjusted to the small interval 13 corresponding to the small cassette 3.

Further, when the motor 36 is driven to rotate in reverse, both gears 35a,
Both drive levers 33a, 33b are rotationally driven in the direction of the arrow via 35b. Then, both drive levers 33a
133b, both sliding tables 30a and 30b are moved in the direction of arrow i, and both sliding tables 26a and 126b are moved to middle interval positions Pa2 and Pb2 or large interval positions Pal and P.
The movement is adjusted to bl. And both reel stands 26a, 26
The center spacing of b is automatically adjusted to medium spacing 12 corresponding to medium force set 2 or large spacing 11 corresponding to large cassette l.

Problems to be Solved by the Invention However, the above-mentioned operations are performed to load the cassette, draw it out, and move the reel table, but in this case, the size of the cassette is selectively detected and the detected size is If the size of the cassette and the reel spacing corresponding to the cassette match, it is sufficient to operate only the tape cassette moving mechanism to start loading the cassette and complete loading, and the time from starting loading to completing loading is also faster. (No problem, but if the cassette size is selectively detected and the detected cassette size and the reel spacing corresponding to the cassette do not correspond, the reel of the selectively detected cassette size After the reel stand is moved and the reel interval is adjusted to correspond to the previously selected cassette, the cassette holder drive mechanism is operated to start loading the cassette and complete loading. Therefore, there is an inconvenience that it takes too much time from the start of loading to the completion of loading, or that the tape cassette moving mechanism is moved vertically when the reel stand does not correspond to the reel interval compatible with the cassette, causing damage to the device. Cases may also occur.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a highly reliable magnetic recording and reproducing device that can shorten the operating time from the start of loading a cassette to the completion of loading.

Means for Solving the Problems The present invention provides a tape cassette moving mechanism that moves a plurality of tape cassettes of different sizes horizontally by a certain amount and then moves the tape cassettes in the vertical direction, and adjusts the center spacing of the reel stand. a reel stand moving mechanism, first, second and third cassette size detection means for detecting the size of the tape cassette, and first, second and third positions for detecting the movement position of the reel stand. a detection means, a tape cassette drive means for moving the tape cassette moving mechanism, and a reel stand drive means for moving the reel stand moving mechanism, and the first, second and third The tape cassette moving mechanism is moved in the horizontal direction by a detection signal from the cassette size detecting means, and at the same time, the moving operation of the reel stand moving mechanism is started, and the first, second,
The magnetic recording and reproducing apparatus is configured to move the tape cassette moving mechanism in the vertical direction after a detection signal from one of the third position detection means is detected.

The present invention has a simple configuration in which the tape cassette moving mechanism is moved in the vertical direction to load the cassette after detecting that the center interval of the reel stand has been adjusted using the above-described configuration, from the start of loading the cassette to the completion of loading. In addition to reducing installation time, there is no need to move the tape cassette moving mechanism in the vertical direction when the reel stand does not correspond to the reel spacing corresponding to the cassette, and reliability is improved without the inconvenience of damaging the device. It will be done.

Embodiment FIG. 1 shows a block 1 showing an embodiment of the present invention, FIGS. 2 and 3 show schematic diagrams 1-4 of a tape cassette moving mechanism according to the invention, and FIGS. 4 to 6 show a block 1, and FIGS. It is a schematic diagram showing a reel table moving mechanism. In the drawings, the same numbers are added to parts that have the same functions as those of the conventional example. In FIG. 1, 15 is a cassette transfer motor;
0.51.52 is a cassette size detection amplifier for amplifying the signal that detects the size of the cassette, and 50 is
51 is for medium force set detection, and 52 is for small 1 set detection. 54 is an intermediate position detection signal amplifier for vertically moving the tape cassette moving mechanism (i'1M), 55 is a red loading completion position detection signal amplifier for detecting the cassette loading completion position, and 88 is an intermediate position detection signal amplifier for detecting i'1M. , 53 is a cassette size determination circuit for determining the cassette size based on the detection signal from any of the cassette detection signal amplifiers of 50.511.52 above,
OR circuits (hereinafter simply referred to as OR), 82, 83, 84 and 85 are pulse generation circuits for generating a signal of "1" for a certain period of time from the timing of inversion from "0" to "1"; 56 is a pulse generation circuit; It is a holding circuit, and the signal via 0R80
lΣT (when set, a 1" signal is output from the holding circuit 56. > RES with the signal from OR'92
It will be ET. (R, E S E T, holding circuit 5
6 outputs a signal "'Q". ) 57 is before:
A control circuit 58 for controlling and adjusting the rotational speed of the cassette transfer motor 15 is a control circuit 58 for controlling the rotational speed of the cassette transfer motor 15.
5. The motor drive circuit for driving the above-mentioned method i'?
f'TIWJ: Driving is started with a "1" signal from 56 (supplied to the start terminal of the motor drive circuit 58), and a "1" signal from the holding circuit 60 (details will be described later) (supplied to the start terminal of the motor drive circuit 58). 7, 59 is a forward/reverse command terminal for reversing the rotation direction of the cassette transfer motor 15; 60 is a holding circuit; (When set, a 1° signal is output from the holding circuit 60.) With the signal from the OR 66, RE2 I:, T
be done. (When RE Sl 'i' is performed, the holding circuit 60 outputs a signal of 'paO'.) C) 2.63.64
is a reel stand center distance position detection amplifier for amplifying the detection signal for detecting the center distance of the reel stand of the cassette/soto, 62 is a large force cera I, 63 is a medium force set, 64
689. 90 and 91 are switch circuits for detecting one small set, and are controlled by the 1" signal from the above set size discrimination circuit 88. 65 is
It is an OR circuit, and the detection signals from the above-mentioned switch circuits 89, 90 and 91 are supplied. Reference numeral 93 denotes a switch circuit, which is controlled by a "1" signal from the previous Ha OR 65. The detection signal from the 0R65 is supplied to the 0R66, 80 via the control terminal of the switch circuit 93 and the +'+Yc pulse generation circuit 85. 67 is
This is a holding circuit, and is set by the detection signal from the pulse generating circuit 82 (when reset, a signal of 0'' is output from the holding circuit 67).
It is set by a signal from the generation circuit 85. (SET
Then, the holding circuit 67 outputs a signal of P1. ), 68 is a holding circuit and the pulse generating circuit 82
(If it is set at H and then ET ('::), the holding circuit 68 outputs 1" of Iπ.)
The pulse generating circuit 8 ((from a)
ET will be sent. (When RESET is performed, an "O" signal is output from the holding circuit 68, and 1) 09 is a control circuit for controlling the rotational speed of the reel stand f feed motor 36, and 701i is the reel stand A motor drive control circuit for driving the transfer motor 36 starts driving with a signal of "1" from the holding circuit 68 (supplied to the star 1 terminal of the motor drive circuit 70), and starts driving with a signal of "1" from the holding circuit 68 (supplied to the star 1 terminal of the motor driving circuit 70). The drive is stopped by a signal of 1° (supplied to the stop terminal of the motor drive circuit 70).'/j is a forward/reverse command to change the direction of rotation of the reel table transfer motor 3G to forward or reverse. In the terminal for Figures 2 and 3, 72 a s 72
b % 7 J 8% 73 b % and 7I4-a
17t1. b is a cassette size detector for detecting the above-mentioned cassette sizes (large cassette, medium power set, small cassette), and when the cassette is detected, "O"
” is detected by the cassette size detection amplifier 50.5.
11 and 52. The detection signals of the cassette size detectors 72a and 72b are generated by the cassette size detection amplifier 50, and the detection signals of the cassette size detectors 73a and 73b are generated by the cassette size detection amplifier 51 and the cassette size detectors 74a and 74b. The detection signals are respectively supplied to the cassette size detection amplifiers 52. Guide roller position detectors 75, 76 and 77 operate depending on the presence or absence of the guide roller 12a. When the guide roller 12a is detected, a detection signal of "0" is obtained. The guide roller position detector 75 is a detector that detects the presence or absence of the guide roller 12a when the cassette is pulled out. (Operation description is omitted in the present invention) The guide roller position detector 76 detects the position of the guide roller 12.
When the guide roller 12a is detected by the guide roller position detector 77, a detection signal of "0" is sent to the intermediate position detection signal amplifier 54, and when the guide roller position detector 77 detects the guide roller 12a, a detection signal of "O" is sent to the cassette installation completion position detection signal amplifier 55. are supplied respectively. 121.12 in Figures 4 to 6
Reference numeral 1 is a sliding table having a motor 122, 122' and a reel table 123, 123'. The sliding table 12
One side of 1.121' has pedestals 1 on both sides as shown in Figure 5.
24. The guide rods 125 and 125' held at an angle of 124° are slidably engaged, and the sliding bases 121 and 125' are engaged to hold the sliding bases 121 and 121' and are slidable at the threaded portions. It is configured to be dynamically driven. The rotating shaft 126.126' has both ends supported by bearings 127.127'12.
The bevel gears 129 and 129', which are rotatably held at 8 and are integrally provided, are connected to the bevel gear 1 provided on the motor 36.
31, the rotation of the motor 36 is controlled by the male screw i,
i'. In addition, the sliding table 121.12I°
The reel stand center distance position detectors 137, 138, 139, and 140 are integrally provided with detection pieces 136, 136' for detecting the center distance position of the reel stand, respectively, and are operated to detect the center distance of the reel stand. Interval position detector 137
is a small cassette, the reel stand center distance position detector 13
8 and the reel stand center distance position detector 140 is set to medium force, and the reel stand center distance position detector 139 is set to the center distance of the reel stand 123.1 of the large cassette.
Move 23'. When the detection piece 136.136° detects the reel stand center distance position detector, a detection signal of "0" is sent to the reel stand center distance position detection amplifier 62, 63.
and 64. The detection signal from the reel stand center distance position detector 137 is transmitted to the reel stand center distance position detection amplifier 64 and the reel stand center distance position detector 13.
8 and the detection signal from the reel stand center distance position detector 140 is transmitted to the reel stand center distance position detection amplifier 63,
The detection signals from the reel stand center distance position detector 139 are supplied to the reel stand center distance position detection amplifiers 62, respectively. The reel stand center distance position detector 138 operates when the reel stand center distance position detector 137 moves from the reel stand center distance position detector 137, and the reel stand center distance position detector 140 operates when the reel stand center distance position detector 137 moves from the reel stand center distance position detector 137 side. 139
It is configured to operate when someone moves from the side.

Furthermore, FIG. 7 shows three types of tape cassettes used in the conventional example: a large cassette 1 containing a large reel 141, 141', a medium force set 2 containing a medium reel 143, 143', The small cassette 3 containing the small reel 145, 145', the large cassette 1, the medium power set 2, and the small cassette 3 are held with their front openings 147 aligned when mounted on the cassette holder. The magnetic tape 148 pulled out from each reel is placed on the guide post 1.
49 and then guided to other posts of the device. On the other hand, the magnetic tape 150 that has passed through the device is
1 and is wound onto the rear reel.

In the above configuration, the following operations are performed.

To make the explanation easier to understand, the explanation will be based on the case where a small cassette is used and the reel stand position is at the center spacing position of the medium force set (as shown in FIG. 4). In FIG. 3, when the small cassette 3 is inserted from the cassette holder opening 20, the cassette size detector 74a
, 74b operate, and the detected "0" detection signal is supplied to the cassette size detection amplifier 52. Supplied “0”
The signal "1" is inverted and amplified by the cassette size detection amplifier 52, and the signal "1" is supplied to the cassette size discrimination circuit 88, and the small cassette detection signal whose cassette size has been discriminated is supplied to the 0R53 and the switch circuit 91. The signal from the 0R53 generates a "1" signal for a certain period in the pulse generation circuit 82, and is sent to the holding circuit 56 via the 0R80.
is supplied to the SET terminal of , and the holding circuit 56 is set. A signal of “1” is supplied from the holding circuit 56 to the start terminal of the motor drive circuit 58, and the signal “1” is supplied to the start terminal of the motor drive circuit 58.
8 operates, the cassette transfer motor 15 is driven to rotate at a rotational speed set by the motor control circuit 57, and the tape cassette moving mechanism 5 is driven to move in the horizontal direction (in the direction of arrow C in FIG. 3). On the other hand, a signal of "1" for a certain period from the pulse generating circuit 82 is supplied to the SET terminal of the holding circuit 68, and the holding circuit 68 is set. A signal of "1" is supplied from the holding circuit 68 to the start terminal of the motor drive circuit 70, the motor drive circuit 70 operates, and the reel stand transfer motor 36 is driven to rotate at the rotation speed set by the motor control circuit 69. The reel table moving mechanism 25 is indicated by the arrow n.
%n' direction (Fig. 4). When the tape cassette moving mechanism 5 is driven to move in the horizontal direction (in the direction of arrow C in FIG. 3) and the guide roller position detector 76 detects the guide roller 12a, a detection signal of "O" is supplied to the intermediate position detection signal amplifier 54. Ru. The intermediate position detection signal amplifier 54 inverts and amplifies the "1" signal, and the pulse generating circuit 83 generates a "1" signal for a certain period of time.

If the signal is not detected by the reel stand center distance position detector 137, the signal is supplied to the SET terminal of the holding circuit 60 and the RESET terminal of the holding circuit 56 via the switch circuit 93 and 0R92. The holding circuit 60 is SE
T, and a signal of "1" is supplied from the holding circuit 60 to the stop terminal of the motor drive circuit 58. Therefore, since a signal of "1" is supplied to the stop terminal of the motor drive circuit 58, the driving operation of the motor drive circuit 58 and the rotational drive of the cassette transfer motor 15 are stopped, and the tape cassette moving mechanism 5 is stopped.

(Because the RESET terminal of the holding circuit 56 is supplied with a “1” signal for a certain period of time from the 0R92, the holding circuit 56 is RESET, and a “0” signal from the holding circuit 56 starts the motor drive circuit 58. (The reel table moving mechanism 25 is driven to move in the direction of arrow nXn' (FIG. 4), and each screw mechanism is The sliding tables 121 and 121' are driven to move.

The detection piece 136 is the reel stand center distance position detector 13.
7 is detected, a detection signal of "0" is supplied to the reel stand center distance position detection amplifier 64, which inverts and amplifies the reel stand center distance position detection amplifier 64, and a signal of "1" is sent via the switch circuit 91 to the reel stand center distance position detection amplifier 64. Supplied to 0R65. The signal from the OR 65 generates a "1" signal for a certain period in the pulse generation circuit 85, and the signal is sent to the SE of the holding circuit 67.
T terminal, the RESET terminal of the holding circuit 68, the 0R
66 and 80. A signal of "1" for a certain period of time is supplied to the RESET terminal of the holding circuit 60 via the ○R 66, and a signal of "0" is supplied from the holding circuit 60 to the stop terminal of the motor drive circuit 58.

A signal from the pulse generating circuit 85 is supplied to the SET terminal of the holding circuit 56 via the 0R80. When the holding circuit 56 is set, "1" from the holding circuit 56 is set.
” signal is supplied to the start terminal of the motor drive circuit 58. Therefore, the motor drive circuit 58 operates, and the cassette transfer motor 15 is driven to rotate at the rotational speed set by the motor control circuit 57, and the tape cassette movement mechanism 5 is again driven to move in the vertical direction (in the direction of arrow C in FIG. 3).The tape cassette moving mechanism 5 is driven to move in the vertical direction (in the direction of arrow d in FIG. 3), and the guide roller position detector 77 detects the guide roller 12a. When detected, a detection signal of 0'' is detected and supplied to the cassette installation completion position detection signal amplifier 55. The cassette loading completion position detection signal amplifier 55 inverts and amplifies the "1" signal, and the pulse generating circuit 84 generates a "1" signal for a certain period of time, which is then sent to the RESET terminal of the holding circuit 56 and the above through the 0R92. It is supplied to the SET terminal of the holding circuit 60. The holding circuit 56 is set to RESE
A signal of "0" from the holding circuit 56 and a signal of "1" from the holding circuit 60 are supplied to the start terminal and stop terminal of the motor drive circuit 58. Since a signal of "1" is supplied to the stop terminal of the drive circuit 58, the drive operation of the motor drive circuit 58 and the rotational drive of the cassette transfer motor 15 are stopped, the tape cassette movement mechanism 5 is stopped, and the holding circuit is stopped. 56 is supplied to the start terminal of the motor drive circuit 58, the drive start operation of the motor drive circuit 58 is canceled and the cassette mounting operation is completed.Furthermore, the tape cassette moving mechanism 5 The i+J control circuit 57 for controlling the rotational speed of the cassette transfer motor 15 and the reel table moving motor 36 are configured so that the maximum moving time of the reel stand moving mechanism 25 is shorter than the horizontal movement time of the reel stand moving mechanism 25. The rotation speed of the control circuit 69 that controls the rotation speed of the reel stand is set, and if the reel stand center interval position detector 137 detects the reel stand center interval position detector 137 earlier than the detection of the reel stand center interval position detector 76, the reel stand center The interval position detector 137 detects the detection piece 136, and the detection signal of "0" is inverted and amplified by the reel stand center interval position detection amplifier 64, and the signal of "1" is transmitted to the switch circuit 91 and 0R65. is supplied to the control terminal of the switch circuit 93 via the switch circuit 9.
3 operates, and the holding circuit 56 is not RESET and the holding circuit 60 is not set. Therefore, the motor drive circuit 58 remains in an operating state, and the tape cassette moving mechanism 5 continuously moves from horizontal to vertical movement, and when the guide roller position detector 77 detects the guide roller 12a, The loading of the cassette is completed by these operations. Further, the same operation can be performed even if the type of cassette and the intermediate position of the reel stand are at other positions.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the size of the cassette is selectively detected, and when the detected size of the cassette does not correspond to the reel interval corresponding to the cassette, the tape cassette moving mechanism When the reel stand moving mechanism detects that the cassette is inserted and moves the reel stand at the same time, if the reel stand center distance position detector does not detect it, the tape cassette is moved after detecting that the center distance of the reel stand has been adjusted. The intermediate position is detected by moving the moving mechanism in the vertical direction to complete the cassette loading operation, and by configuring the maximum moving time of the reel stand moving mechanism to be shorter than the horizontal moving time of the tape cassette moving mechanism. If the reel stand center distance position detector detects the position of the reel stand before the reel detection, the tape cassette moving mechanism can move from horizontal to vertical movement without waiting and can be done in a continuous operation.Cassette loading operation The time from the start to the completion of the cassette loading operation can be shortened, and there is no need to move the tape cassette moving mechanism in the vertical direction when the reel stand does not correspond to the reel interval compatible with the cassette, which may cause damage to the device. Reliability can be improved without any problems.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIGS. 2 and 3 are schematic diagrams showing a tape cassette moving mechanism in the present invention, and FIGS. 4 to 6 are reel table moving mechanisms. 7 is a plan view showing three types of tape cassettes used in the conventional example, FIG. 8 is a perspective view of the entire conventional tape cassette moving mechanism, and FIGS. 9 to 11 are FIG. 12 is a schematic diagram showing a conventional reel table moving mechanism. 6... Cassette holder, 15... Cassette moving motor, 36... Reel stand moving motor, 50, 51
．． 52...Cassette size detection amplifier, 53.65.
66.80.92...OR circuit, 54,...Intermediate position detection signal amplifier, 55...Cassette installation completion position detection signal amplifier, 56.60.67.68...Holding circuit, 62.63 .64...Reel stand center distance position detection amplifier, 57.69...Control circuit, 58.70...Motor drive circuit,...72a, 72b. 73a, 73bs 74as 74b ""Cassette size detector, 75.76.77...Guide roller position detector, 82.83.84.85...Pulse generation circuit, 88...Cassette size determination circuit, 89 .90.
91...Switch circuit, 121.121'...
Reel sliding base, 123.123'... Reel base, 136.136'... Detection piece, 137.138.1
39.140... Reel stand center interval position detection. Agent's name: Patent attorney Toshio Nakao and 1 other person 12a, Mu, C-Guy E Rolla qs, 76, n-xi Idrolla 1 Sada Ki'12a,
b - sword r! 9 Tonize &J3'/3a, Mu - hook, b - Figure 2 section 8 Haiku Qri Figure 5 Figure 6

Claims (1)

[Claims] A tape cassette moving mechanism that moves a plurality of tape cassettes of different sizes horizontally by a certain amount and then vertically moves the tape cassettes, a reel stand moving mechanism that adjusts the center distance of the reel stands, and a size of the tape cassettes. first, second and third cassette size detection means for detecting the size of the reel; and first, second and third cassette size detection means for detecting the movement position of the reel stand.
a third position detecting means; a tape cassette driving means for moving the tape cassette moving mechanism; and a reel stand driving means for moving the reel stand moving mechanism; , the tape cassette moving mechanism is moved in the horizontal direction by a detection signal from one of the third cassette size detecting means, and at the same time, the moving operation of the reel stand moving mechanism is started,
A magnetic recording and reproducing apparatus characterized in that the tape cassette moving mechanism is configured to move in the vertical direction after a detection signal from any one of the third position detection means is detected.