JPS62232752A - Magnetic recording and/or reproducing device - Google Patents

Abstract

PURPOSE:To heighten responsibility at a mode changing time, and to reduce the consumption of power, by driving a supply reel feather by operating a one-way clutch mechanism by means of the selective rotary driving of a rotor, when a running direction is switched from a forward running to a reverse direction. CONSTITUTION:At the switching time of a tape running from the forward running where a tape is sent out from the supply reel hub 6 of a tape cassette 1, to a reverse running, such as in a rewinding time, a linking state between an idler 92 on one side out of a pair of idlers 91 and 92 on a large diameter gear 89, and a large diameter gear 95 which drives a take-up reel hub 7 at a winding side, is released, and at the same timing, the idler 91 on the other side is linked with a large diameter gear 110 which drives a supply side reel feather 127, and immediately the gear is driven in the reverse direction. Along with the above, a mode change is performed by the operation of a one-way clutch mechanism 109 buit in the supply side reel feather 127 without relaxing a tension arm 114. In this way, high responsibility can be obtained, and a load on a capstan motor is reduced, thereby the consumption of power can be reduced.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a magnetic recording and/or reproducing device that records or reproduces a magnetic tape by winding it around a guide drum. The present invention relates to a magnetic recording and/or reproducing device that can switch between forward running and reverse running without operating the magnetic recording and/or reproducing apparatus.

(Prior Art) Currently, efforts are being made to further reduce the size of current household video tape recorders (VTRs) without changing the recording pattern on the magnetic tape. One of the ideas for downsizing VTRs is to wrap the magnetic tape around a guide drum approximately 270 degrees, exceeding the current approximately 180 degrees, and to wrap the video head four times at 90 degree intervals. There is a concept of reducing the diameter of the guide drum to two-thirds of the current diameter by providing the same number of guide drums, thereby reducing the diameter of the guide drum and making the VTR more compact.

In order to maintain compatibility with current models, in addition to matching the video signal recording patterns on the magnetic tape, it is also necessary to record the audio from the guide drum of the magnetic tape so that the tracking servo is performed in the same way. It is necessary to match the length along the tape path up to the control head (A/C head) with the reference length.

Therefore, the applicant company reduced the diameter of the guide drum as described above and wound the magnetic tape symmetrically around the guide drum so that the length of the tape up to the A/C head coincided with the standard length. A magnetic recording and/or reproducing apparatus was proposed, for example, in Japanese Patent Application No. 127083/1983.

(Problems to be Solved by the Invention) By the way, when the tape running direction is switched from forward running (forward running) to reverse running (reverse running) during tape running in the above-mentioned conventional device, the supply side reel feather The load by the tension band acting on the reel is released, the tension arm is slightly released, the tension band is put into a relaxed state, and the supply side reel feather can freely rotate (idle).

That is, when switching the tape running direction from forward running to reverse direction, for example, the relay lever is rotated by rotating the cam gear and moving the play bar arranged on one side of the device, and then the relay lever is rotated. By rotating the tension arm lever and rotating the tension arm disposed on the other side of the device, the tension band acting as a load on the supply side reel feather is once relaxed. Then, at the same timing as this operation, one oscillating gear (idler)
The winding side drive gear is converted into a supply side drive gear, and the supply side reel feather is driven in reverse by this supply side drive gear.

In this way, when switching the tape running direction from, for example, the forward direction to the reverse direction, each mode is appropriately set using multiple parts, and one oscillating gear is moved appropriately, so that the response at the time of mode switching is Not only does the performance deteriorate, but the increase in the number of component parts also causes operational noise.
・Due to the decrease in productivity due to the complexity of the mechanism and the increase in the size of *a, due to the need to secure space for placing parts, etc.
However, there were disadvantages such as a large amount of space and high costs. Furthermore, the problem arises that the power consumption of the motor increases due to the increase in the number of component parts.

(Means for Solving the Problems) Therefore, the present invention has been made in view of the above problems, and provides a magnetic tape 2 that is pulled out from a tape cassette 1 installed in an apparatus, and is equipped with a rotating magnetic head. The magnetic tape 2 is placed on the entrance side and the exit side with respect to the guide drum 11.
Vertical pole 46.58 and inclined pole 47 guiding the
．． In the magnetic recording and/or reproducing apparatus, the magnetic tape 2 is wound around the tape guide drum 11 over a predetermined angular range. , a first rotating body 95 that rotationally drives the take-up reel hub 7 of the tape cassette 1, and a supply reel hub 6 of the tape cassette 1.
The supply side reel feather 12 is equipped with a second rotating body 110 that rotationally drives the feeder reel feather 12 and has a one-way latch mechanism 109.
7, the first rotating body 95 and the second rotating body 110
a third rotary body 89, which is driven by a motor 83 capable of forward and reverse rotation, and has a pair of idlers 91 and 92 facing each other so as to selectively drive the magnetic tape 2; and a tension arm that controls the tension of the magnetic tape 2. The control member 114 controls the rotation of the supply reel feather 127 by the operation of 119, and when the magnetic tape 2 switches from normal rotation running in which it runs from the supply reel hub 6 to the take-up reel hub 7 to reverse running, The tension arm 119
One rotary body 91 on the third rotary body 89 selectively drives the second rotary body 110 to rotate, thereby operating the one-way clutch mechanism 109 to control the supply reel feather. The present invention provides a magnetic recording and/or reproducing device characterized in that it is configured to rotationally drive a magnetic recording device 127.

(Function) As shown in FIGS. 1, 4, and 5, for example, when the magnetic tape is fed out from the supply reel hub 6 of the tape cassette 1 shown in FIG. ) When shifting to running, one idler 92 of the pair of idlers 91 and 92 on the large-diameter gear 89 is disengaged from the large-diameter tooth *95 that drives the take-up reel hub 7 on the take-up side. At the same timing, the other idler 91
is the large diameter gear 110 that drives the supply side reel feather 127
The one-way latch device 44 built into the supply side reel feather 127
109 allows mode conversion to be performed without loosening the tension arm 114. Therefore, during mode conversion, high responsiveness can be obtained with a small number of parts, and the load acting on the capstan motor 83 can be reduced. power consumption can be reduced. Further, the simplification of the mechanism allows the desired operation to be performed in a small space, contributing to the reduction in size and weight of the device.

(Example) First, before explaining the magnetic recording and/or reproducing device according to the present invention, the configuration of a tape cassette applied to the device according to the present invention will be explained.

FIG. 9 shows a small tape cassette 1 used by being attached to the magnetic recording and/or reproducing apparatus of the present invention. This small tape cassette 1 includes a cassette housing 3 that houses a magnetic tape 2, and is provided on the front side of the cassette housing 3 so as to be openable and closable, and is guided by left and right guide rollers 5. It consists of a lid 4 that protects the magnetic tape 2.

In this tape cassette 1, a supply reel hub 6 is fitted into a supply side reel feather of a device 10, which will be described later, and a gear portion 7a on the outer peripheral surface of the take-up reel hub 7 is a drive gear of the device (indicated by a center mark ?1100 in FIG. 2). ) and are engaged with the recessed portions 3a and 3b on the front side of the cassette housing 3.

With vertical and inclined loading poles, capstans, etc., which will be described later, relatively fitted into the 3C, and with the lid 4 rotated to the horizontal position and opened, magnetic recording and/or
Or it is attached to the playback device a10.

1 to 5 show a preferred embodiment of the magnetic recording and/or reproducing apparatus 10 according to the present invention, each showing a stop mode state before loading a tape cassette, and FIG. and/or a schematic plan view of the playback device 10 excluding tape guide means such as an O-ding ring, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a plan view showing a pole base drive system including a loading ring. 4 is a plan view showing a tape reel drive system including a capstan, and FIG. 5 is a longitudinal sectional view of the reel drive mechanism shown in FIG. 4.

In each figure, a magnetic recording and/or reproducing device 10 includes a tape loading mechanism 15 for pulling out a magnetic tape and winding it around a guide drum 11 at a predetermined angle, and a tape loading mechanism 15 for driving the tape loading mechanism 15 and for running the tape. A gear mechanism 16 consisting of a plurality of gears that corrects the surface of the tape and drives a middle pole that serves as a tape guide.
and a reel drive mechanism 17 for driving the tape reel of the tape cassette 1, all of which are provided on a chassis base 14.

In each of FIGS. 1 and 2, 11 is a tape guide drum (guide drum) in which, for example, four video heads (rotating heads) are arranged at 90 degree intervals. It is composed of an upper drum 12 which is rotatably driven by an upper drum 12 and a lower drum 13 which is fixed to a chassis 14.The diameter of the drum is smaller than the conventional 273, and the magnetic tape is wound at an angle of 270 degrees or more. be done. The video head operates by sequentially switching the tape attachment angle range as a negative operation unit, and the same track pattern as the current one is formed on the magnetic tape 2. Further, since the magnetic tape is wound as described later, the guide drum 11 remains inclined at a predetermined angle (approximately 10 degrees) in the x-X axis direction with respect to the vertical axis, and the inclination angle is small. Therefore, there is almost no increase in the occupied area and height due to the inclination, the occupied area of the guide drum 11 within the device 10 is small, and the mounting W110
becomes small.

Further, the details of the installation state of this guide drum 11 are shown in FIG. 6, as shown in FIG. A plurality of leg portions 13a, . . . , 13a4 having successively different lengths can be integrally formed at the lower part of the lower drum 13 so as to correspond to the inclination angle and direction of the guide drum 11. Therefore, this guide drum 11
is the leg portion 13a1... with respect to the chassis base 14.
If the guide drums 13a4 are directly fixed with screws 18 or the like, they can be mounted while maintaining a predetermined angle of inclination, so high mounting accuracy can be ensured. This makes it possible to secure space for the mechanical mechanism, and contributes to reducing the weight and cost of the device due to the reduction in the number of parts.

A tape loading mechanism 15 and a gear mechanism 16 that perform so-called parallel loading are both driven by a single loading motor 19 that can rotate in two directions, forward and reverse. The loading motor 19 that directly drives this gear machine 11f16 is shown in FIG.

As shown in Fig. 2 and Fig. 7, the worm gear 2 of the motor shaft
0, a worm wheel 21 that meshes with this worm gear 20, and a small gear 2 that is coaxial with this worm wheel 21.
2 meshes with the large gear 24 of the terminal gear assembly 23 to drive the terminal gear assembly 23 at a reduced speed.

The shaft gear 23a of the terminal gear assembly 23 has a groove so as to rotationally drive a cam gear 26 that is integrated with a cam gear mechanism 25 that drives a middle pole 39, which will be described later.

Further, the intermediate gear 27 of the terminal gear structure 23 meshes with a lower annular winding-side loading gear (winding gear) 28 disposed in upper and lower stages of the tape loading mechanism 15, as shown in FIG. The guide drum 11 is rotated counterclockwise around the guide drum 11 shown in FIG.

Then, the winding gear 28 passes through the idle tooth lI29,
The large gear 31 of the gear assembly 30 meshing with this gear is decelerated and driven, thereby the small i1 [32
is driven, so that the upper supply-side loading gear (supply gear) 33 of the tape loading mechanism 15 that meshes with the small gear 32 is decelerated clockwise. Therefore, by driving the loading motor 19 in normal rotation,
The rotational driving force decelerates the take-up gear 28 at a predetermined speed via the worm wheel 21 and the terminal gear assembly 23, and the drive of the take-up gear 28 causes the gear assembly 30 to be reloaded via the idle gear 29. By this deceleration drive, the supply gear 33 is rotated clockwise (the take-up gear 28 is counterclockwise) around the guide drum 11 shown in FIG. 1 at a lower speed in synchronization with the take-up gear 28. This difference in the number of turns and the rotational speed of the supply gears 28 and 33 is due to the length of each movement path of the pole base, which will be described later.

34 is an arm gear, as shown in FIG. 16, a pin 35 installed at one end is locked to a spiral cam ring 26a formed in the cam gear 26, and a pin 35 is installed at the other end. Shaft teeth J of a pole arm 36 having an inclined middle pole 39 erected at one end of the formed fan-shaped gear 34a
137 and rotates counterclockwise about the pivot shaft 38.

Further, a lock arm 41 is integrally attached to the arm gear 34 and has a pivot shaft 40 provided upright from the arm gear 34 as a pivot point. When the arm gear 34 rotates counterclockwise due to the rotation of the cam gear 26 driven by the loading motor 19, one end of the lock arm 41 faces onto a guide rail 45, which will be described later, and a leaf spring 42 attached to the other end. This elastically contacts the outer circumferential surface of the upper cam 43 that is integral with the cam gear 26 .

Therefore, during arch loading when the arm gear 34 rotates a predetermined angle counterclockwise around the pivot shaft 38,
The shaft gear 37 meshing with the fan-shaped teeth *34a rotates clockwise in the opposite direction, and the pole arm 36 rotates clockwise, changing from the state shown in FIG. 16(A) to the state shown in FIG. A fixed on the base plate while crossing the guide rail 45 shown.
/C crosses in front of the head AH and moves to the normal position as shown in FIG. 16(B). In the stop mode, as shown in FIG. 16(A), the lock arm 41 is in a position where its plate spring 42 contacts the small diameter portion 438 of the cam 43 to allow movement of the middle pawl 39, and this pawl During recording/reproduction when the arm 36 rotates, the lock arm 41
After the leaf spring 42 slides along the shape of the cam 43 and the pole arm 36 is rotated to a predetermined stop position,
The leaf spring 42 reaches the large diameter portion 43b of the cam 43, and the 16th
The a<O lock arm 41 shown in Figure (B) is the middle pole 3.
9 to lock it in place.

Next, the above tape loading 814115 will be specifically explained.

The tape loading mechanism 15 winds a magnetic arc along the outer periphery of the guide drum 11 over an angular range of approximately 270 degrees, as shown in FIGS. 1, 3, and 8 (A) and (B). For this purpose, a supply side guide groove 44a is formed on the left side, and a winding side guide groove 44b having a longer path than the supply side guide groove 448 is formed on the right side. The guide rail 45 and the above-described shape (
a supply gear 33 at the top of the ring) and a take-up gear 28 at the bottom
It is roughly structured as follows.

Each guide groove 44a, 44b of the guide rail 45 is shown in FIG.
As shown in FIG. 4, parallel parts 44a+, 44b+ on the insertion side front of the tape cassette 1,
4t) + and l! It is composed of arcuate portions 44a2 and 44b2 provided.

The supply side guide groove 44a is located on the chassis base 14,
On the other hand, in the winding side guide groove 44b, the terminal end of the arcuate portion 44b2 corresponds to the inclination angle and mounting height of the guide drum 11, and in order to maintain the magnetic tape horizontally, It has a displaced structure (a three-dimensional inclined surface as shown in FIG. 10, which is sequentially downwardly inclined from the central part to the rear side). At the end of the arcuate portion 44b2, in order to support the vertical roller pole 58 above and below on the pole base 57, which will be described later, there is a U shaped U shaped corresponding to the diameter of the vertical roller pole 58 as shown in FIG. Shape 4 part 129
A substantially U-shaped stopper portion 131 having V-shaped recesses 130 formed above and below is provided.

On the other hand, the end of the arcuate portion 44a2 on the supply side has a groove 4482 bent inward from the vicinity of this end toward the guide drum 11.
' and a bending groove 44a2'' bent on the opposite side to the groove 4482', which is divided into a substantially Y-shape.The end of one of the divided arcuate portions 44a2'' Similarly to the end of the side guide groove 44b, the pole base 4
In order to support the vertical roller pole 46 above and below 8,
A stopper portion (not shown) is provided in which a letter-shaped concave portion and a V-shaped concave portion are formed above and below. Therefore, a rotatable vertical roller pole (vertical pole) 46 and an inclined loading pole (
When the pole base 48 on which the tilted fixed pole 47 is erected adjacently moves from the stop mode position to the loading end position along the guide groove 44a of the guide rail as shown in FIGS. By guiding the pole 46 side to the bending groove 44a2'', this pole base 4 moves backwardly to the inclined pole 4 around the vertical pole 46 along the arc of the other bending TA 44a2'.
At the same time as the vertical pole 46 is rotated counterclockwise, the shaft of the vertical pole 46 is supported by the upper and lower U-V shaped recesses of the stopper portion, and the pole base 57 is positioned.

Here, the specific configuration of the take-up gear 28 and the supply gear 33, which serve as tape loading means, will be explained with reference to FIGS. 8(A) and 8(B).

As shown in FIGS. 1 and 7, both winding gears 28 and supply gears 33 are guided by a plurality of guide gears 49 and 49.
They are each horizontally supported by a guide plate 50 and arranged vertically at a predetermined interval.

As shown in FIG. 8 (A), the winding gear 28 has a long hole 53a into which a vertically installed bottle 51, 52 is inserted.

A guide plate 53 that slides using the guide plate 53b as a guide is placed on the upper surface thereof, and relative movement of the guide plate 53 is regulated by a tension spring 61 stretched between the two. A connecting rod 55 that is vertically displaceable about a shaft 54 is rotatably supported on one side of the elongated hole 53a of the guide plate 53. Reference numeral 57 denotes a winding-side pole base in which a vertical pole 58 rotatably supported on a shaft and an inclined fixed pole 59 are erected in close proximity to each other, and the pole base 57 moves on the guide rail 45 using the lower part of the vertical pole 58 as a guide shaft. A tongue piece 57a that enters into the stopper part 131 is formed at the tip on the moving side. This pole base 57 has a swinging rod 60 on the side of the tilted fixed pole 59.
By being mutually pivotally supported by the connecting rod 55 via the connecting rod 55, it can rotate horizontally on the winding gear 28 and can also be vertically displaced together with the swing rod 60 by the action of the connecting rod 55.

Therefore, during loading when the take-up gear 28 is driven by the gear mechanism 16 and rotates in the counterclockwise direction δ1, when the pole base 57 passes through the center of the guide rail 45 and reaches the three-dimensional slope, this Although the vertical distance between the pole base 57 and the guide rail 45 becomes large, the connecting rod 55
The pole base 57 moves up and down as shown in Figs. 13 and 17.
As shown in the figure, the loading end position of the three-dimensional inclined surface is surely reached.

Moreover, three bottles 62a are provided on the winding gear 28.

The bins 62b and 62c are arranged one after another with a predetermined spacing between them, and the bins 62b and 62a are located on the rear side of the guide plate 53 to form a pinch roller cam 73 which will be described later.
The other bins 62c are driven sequentially by the bins 62b and 6b so as to lock the eject lever 65 shown in FIG.
It is arranged at a position preceding 2a on the rotational direction side.

On the other hand, the supply gear 33 has the same structure as the take-up gear 28, as shown in FIG. 8(B), and has a long hole 34a.
, 34b are used as guides, and a guide plate 64 with vertically installed bottles 65, 66 that slide thereon is placed on its upper surface, and relative movement is restricted by a tension spring 67 stretched between the two.

A connecting rod 70 is mounted on the guide plate 64 and is rotatable about a shaft 69 with a bottle 68 erected thereon. This bin 68 has a vertical pole 46 rotatably supported on a shaft and a tilted fixed pole 47 erected in close proximity to each other, and a pole base 48 having a tongue piece 48a formed at the distal end on the movable side is locked. ing.

Here, the operations of the pinch roller cam 73 and the pinch roller 71 that are operated in conjunction with the rotational operation of the take-up gear 28 shown in FIG. 8(A) are shown in FIGS. 12, 13, and 18(A). This will be explained with reference to (C).

A disc-shaped pinch roller cam 73 that drives the pinch row 571 to a predetermined position is rotatably supported by a shaft 72.
At its outer periphery are bins 62b and 62 on the winding gear 28.
a, the first. Second locking grooves 73a, 73b are formed, and both locking grooves 73a, 73
A spring pin 75 is provided on the outer periphery of the side facing b and the shaft 72.
has been erected. In other words, the locking grooves 73a, 73b and the bin 75 are in a substantially triangular positional relationship. When the angle is rotated, as shown in FIG. 18(A), the leading bin 62b erected on the winding gear 28 is moved into the first locking groove of the disc-shaped pinch roller cam 73 supported by the shaft 72. 73a
to lock.

Therefore, the pinch roller cam 73 rotates clockwise about the shaft 72 against the force of the reversing spring (first elastic means) 74 stretched between the spring pin 75 and the fixed pin 76. . This rotation of the pinch roller cam 73 causes the pinch roller arm 78 provided with the pinch roller 71 to rotate counterclockwise about the shaft 77 via the link 81 connecting the connecting bin 79 and the spring bin 75. and move it to the capstan 80 side. This pinch roller arm 78,
The link 81 and the pinch roller cam 73 constitute a toggle mechanism (boosting mechanism).

As the take-up gear 28 continues to rotate counterclockwise, the bin 62b is moved out of the first locking groove 73a, and the next bin 62a located on the rear side is moved in the direction shown in FIGS. 12 and 18 (
As shown in B), when the second locking groove 73b of the pinch roller cam 73 is reached and locked, the pinch roller cam 73 is rotated while further bending the reversing spring 74, so that the link 81 is further moved in the direction of the arrow. At the same time, the pinch roller arm 78 is rotated counterclockwise about the shaft 77 to bring it close to the capstan 80.

At this time, the toggle mechanism changes the distance j1 between the center of the shaft 72 of the pinch roller cam 73 and the axis of the link 81, the distance 12 between the spring pin 75, the force F1 acting on the link 81 in the D direction, and the force F1 of the spring pin 75. The relationship with the force F2 acting in the rotational direction is Fl.11=F2.t2.

Therefore, near the peak position of the toggle mechanism where the axis of the link 81 is close to the center of the shaft 72 due to the clockwise rotational force of the pinch roller cam 73, the relationship becomes 12>>It+, so Fl>>F2. , the small rotational force of the pinch roller cam 73 can provide the large force necessary to operate the pinch roller 71, and the
It becomes possible to reduce the load.

After that, the rotation of the winding gear 28 causes the bin 62a to move to the first position.
8(C), the axis of the link 81 connecting the spring pin 75 and the connecting pin 79 crosses the line (peak line) connecting the centers of the shafts 72 and moves from the center position of the link 72 during the above operation. By slightly displacing to the opposite side and moving to the loading end position, the link 81 moves in the direction D using the spring bin 75 as a guide against the spring 82 stretched between the spring bin 75 and the spring bin 75. The pinch roller 71 is elastically pressed against the capstan 80 by force 82 (tape running state).

At this time, the force F1 acting on the link 81 in the C direction causes the spring pin 75 to move F2 in the rotational direction of the pinch roller cam 73.
This force acts in the direction of rotation of the take-up gear 28 and supports the pressing force of the pole base 57 when it reaches the O-ding end position. In this way, the pinch 0-ra arm 78, the link 81, and the pinch roller cam 73
The pinch roller 71 pulled in the D direction by the toggle mechanism is reliably elastically pressed against the capstan 80 with a predetermined force due to the small rotational force of the pinch roller cam 73, thereby driving the pinch roller cam 73. By reducing the load on the take-up gear 28 and at the same time reducing the load on the loading motor 19, it is possible to reduce the size of the loading motor 19 and the weight of the drive components.

Furthermore, when the pinch row 571 presses against the capstan 80, the biasing force of the reversing spring 74 is converted and the biasing force acts in the rotational direction of the pinch roller cam 73. 2 elastic means) 82
Since the rotational force in the clockwise direction is applied by the rotational force and the reversing spring 74, when the loading motor 19 is stopped and the loading is completed, the rotational force of the pinch roller cam 73 due to the above-mentioned urging force is applied via the pin 62. By further applying rotational force to the winding gear 28 in the forward rotation direction, the pole base 57 can be positioned more reliably. Further, due to the elastic action of the reversing spring 74, the looseness that sometimes occurs when installing the vinyl roller 1 can be absorbed.

In this way, by reducing the operating force of the pinch roller 71, it is possible to reduce the structural strength of each component related to the pinch roller 71, thereby reducing the weight and improving the reliability of the device 10.

Here, the reel drive mechanism 17J will be explained in detail with reference to FIGS. 1, 2, 4, and 5, respectively.

As shown in FIG. 2, a cabstan motor 83 having a flywheel 93 on its shaft and driving a capstan 80 has a pulley 84 integrated with the flywheel 93 and a belt 86.
7 langes 8 fixed on the chassis base 14 via
A pulley 87 of a swing gear assembly 85 supported on a shaft 90 via a shaft 90 is decelerated and driven. The rotational force from the pulley 87 is transmitted to the input gear 89 of the oscillating gear structure 85 via a wall root plate felt (not shown), which is attached to the 7 flange 88 so as to mesh with the input gear 89. A pair of left and right planetary gears (idlers) 91 and 92 synchronously perform deceleration drive (reverse drive).

The planetary gear 92 on the right side of the oscillating gear structure 85 is disposed close to the right side thereof as shown in FIGS. 2 and 5, and can selectively mesh with a large diameter gear 95 rotating around a shaft 94. in a state. This large-diameter gear 95 is connected via a friction plate 96 to an upper large-diameter gear 97 that rotates coaxially and has approximately the same diameter. Small gear 9 integrally equipped with gear 100
meshes with 9. Therefore, as shown in FIG. 2, when the tape cassette 1 is attached to the tape cassette 1, the supply reel hub 6 is fitted with the supply reel feather described later, and
The upper pinion 100 is positioned and maintained horizontally on the respective studs 101, 102.
meshes with a gear portion 7a on the outer circumferential surface of the winding wheel 7.

In FIGS. 1 and 4, 104 is a brake arm supported by a shaft 105, and when a clockwise rotational force is applied by a torsion spring (not shown) fitted into the shaft 105, the brake arm is Although the brake pad 106 frictionally contacts the drum portion 95a of the large-diameter gear 95 to brake it, during forward rotation such as during recording when the magnetic tape is run in the forward direction by the pinch roller 71 and the capstan 80, In conjunction with the moving operation of the pinch roller 71, the brake pad 106 is separated from the drum portion 95a, and the drum portion 9
Release the load on 5a.

Further, the other planetary gear 91 located on the left side of the oscillating gear structure 85 is a one-way planetary gear built in the supply side reel feather 127 of the supply side reel disk structure 108 supported by a shaft 107 erected from the chassis base 14. Clutch mechanism 109. It is selectively engaged with a large-diameter gear 110 that serves as an input flange. The large-diameter gear 110 rotates integrally with the supply reel feather 127 via the friction plate 125. An internal one-way clutch mechanism 109 that provides an output that can be connected via the supply side reel feather 127 and the roller 111
On the outer peripheral surface of the rotating body 112, one end is fixed to the chassis base 14, and the other end is attached to a tension arm 1, which will be described later.
A tension band 114 connected to one end of the arm lever 113 connected to the arm lever 19 is wound around the tension band 114.

Therefore, during recording/reproducing rotation in which the capstan 80 rotates in the normal direction, the oscillating gear assembly 85 rotates in the F direction (shown in FIGS. 1 and 14), and the other planetary gear 92 is connected to the right large-diameter gear 95. By engaging with and rotating it clockwise,
Since the supply reel feather 127 directly connected to the supply reel hub 6 of the tape cassette 1 rotates clockwise as the magnetic tape is fed out, the roller 111 enters into the wedge-shaped recess 112a in the rotating body 112 and the rotating body 11
2 together clockwise. This rotating body 112
When the magnetic tape is rotated, the tension of the tension band 114 is applied, an appropriate pack tension is applied to the magnetic tape, and the magnetic tape is wound onto the take-up reel 7.

Further, when the oscillating gear structure 85 rotates counterclockwise (direction E) to reverse the magnetic tape, one of the planetary gears 91 rotates integrally via the supply side reel feather 127 and the friction plate 125. By meshing with the diameter gear 110, the rollers 111 in the rotating body 112 form the wedge-shaped recess 1.
The supply side reel feather 12 moves in the escape direction of the reel feather 12a.
7 can rotate in the tape rewinding direction without being subjected to the load of the tension band 114.

Therefore, for example, when the magnetic tape 2 is transferred from forward running when fed out from the supply reel hub 6 to reverse running such as rewinding, one planetary gear 92 of the oscillating gear assembly 85 and the large diameter gear 95 At the same timing when the meshing state with the reel feather 127 is released, the other planetary gear 91 meshes with the large diameter gear 110 of the supply reel feather 127 and immediately reverses the supply reel feather 127. High responsiveness can be obtained, and the load acting on the capstan motor 83 can be reduced to reduce power consumption. In addition, during reverse running such as rewinding, the one-way clutch mechanism 109 in the supply side reel feather 127 can be used without loosening the tension band 114, so in addition to the above, the mechanism can be simplified to achieve the desired operation in a small space. Do it, get it, and wear it! It also contributes to the miniaturization and cost-effectiveness of 10.

Here, again, FIGS. 1, 14, and 19(A) to
(C) using the supply side pole base 48 and rA3.
! l! The operations of the tension arm 119, the arm lever 113, and the hit elimination head 116 that are operated by the driver will be explained.

A tension arm 119 rotatably supported on a shaft 120 erected on the chassis 14 has one end facing the pole base 48 so as to be latched thereto, and a tension arm 119 that is attached to the base 11.
An arm lever 113 that locks the tension band 114 is rotatably supported on the arm 9a. Although this tension arm 119 is biased with a counterclockwise rotational force by a biasing means such as a torsion spring (not shown), the pole base on the supply side returns to the rest position in the stopped state shown in FIG. 48 and stops against the force of the torsion spring. When the pole base 48 is in a stopped state, the tension band 114 is in a relaxed state with respect to the rotating body 112.

The impedance roller 115 is fixedly disposed between the full-width erasing head 116 and the tension arm 119, and absorbs vibrations of the running magnetic tape.

The shaft 12 supporting this impedance roller 115
2, a head base 123 on which a full-width erasing head 116 is mounted is rotatably supported, and a clockwise rotational force is applied by a spring (not shown). 123a is the tension arm 11
9 of the bins 124 can be locked.

Therefore, during tape loading, when the pole base 48 on the supply side moves toward the loading end position within the guide groove 44a on the supply side with the vertical roller pole 46 as the leading end, the tension arm 119 in the state shown in FIG. , the pole base 48 is parallel to the parallel part 44 as shown in FIG.
As it gradually separates from the pole base 48 during the movement process from a1 to the arcuate portion 44a2, the lock Ha is released and the self-returning force of the torsion spring allows the counterclockwise return of rotation about the shaft 120. be done. Then, at the same timing when the pole base 48 separates from the tension arm 119 due to the subsequent movement of the pole base 48,
Due to the rotational force of the tension arm 119, the bin 124 is moved toward the full-width erasing head 1 as shown in FIG. 19(B).
One end locking part 123 of the head base 123 on which 16 is mounted
a is locked, and a rotational force is applied to the head base 123 in the opening direction. At this time, the tension band 114 continues to be in a relaxed state with respect to the rotating body 112.

When the head base 123 is locked by the pin 124 of the tension arm 119, as the pole base 48 on the supply side continues to move, the pole base 48 further comes into contact with one side of the head base 123,
The head base 123 is rotated counterclockwise about the shaft 122. This rotation of the head base 123 causes the tension arm 119 to rotate slightly clockwise as shown in FIG. 19(B), and the tension band 1
14 continues to be in a relaxed state. And pole base 4
8 reaches the loading end position, the pole base 48
The head base 123, which had been rotationally displaced to the state shown in FIG. 19(B), is released from the contact state and rotates clockwise around the shaft 122 due to the biasing force, as shown in FIG. 19(C). It rotates back and is set at the desired setting position.

At this time, at the same time as the tension arm 119 rotates, the arm lever 113 is pulled in the Y+ force direction as shown in FIG. This will be in a tightened state.

In addition, when unloading the tape, the Herad base 12
3 and the tension arm 119 operate in a manner opposite to that at the time of loading, so a description thereof will be omitted. Therefore, at the time of tape loading and tape unloading, the tension arm 119 is operated in conjunction with the movement of the head base 123, so that the head base 123 is moved.
By appropriately changing the shape of the tension arm 119, the operation timing of the tension arm 119 can be set appropriately, and the tension band 114 can be loosened and tightened with a simple configuration, so that tape damage can be avoided and the number of parts is reduced. And the desired purpose can be achieved in a small space.
This also reduces the weight of the device and improves productivity such as assembly.

Here, the magnetic recording and/or reproducing device 10 having the above configuration
The operation will be summarized and explained in detail. The series of operations of each component is performed by a mode sensor section 128 sunk in the cam gear 26 shown in FIG.

In the stop mode shown in FIGS. 1 to 4, the 9th
When a tape cassette 1 as shown in the figure is inserted into a cassette holder (not shown) floating above the top of the device and pressed, the tape cassette 1 is pushed toward the device side by the action of a pantograph mechanism (not shown) provided at the bottom of the cassette holder. When the tape is lowered to the specified position, preparations for tape loading are completed.

FIG. 12 is a plan view of the magnetic recording and/or reproducing apparatus 10 in a Rec lock mode state following tape loading, and FIG. 13 is a plan view showing the loading mechanism taken out after tape loading is completed.

When the equipment 10 is in the stop mode shown in FIG.
When the power switch is turned on and the eject switch is then pressed, the loading motor 19 reverses, and as the take-up gear 28 reverses, the bin 62c moves toward the eject lever 6.
5 is locked and rotated counterclockwise about its shaft 132 as shown in FIG. This movement of the eject lever 65 releases the lower part of the pantograph mechanism of the cassette holder (not shown) which is locked thereto, and the cassette holder is raised. At this time, the pole base 48 on the supply side and the pole base 57 on the winding side move into the guide groove 48 in the direction opposite to the direction of movement during loading.
The parallel portion 44a+ of 4a and 44b slightly retreats toward the bent portion 44b3. This eject mode is set to mode sensor section 1.
28, the eject lever 65 and each bow base 48, 57 return to the positions shown in FIG. Then, in the raised cassette holder, the ninth
By inserting the tape cassette 1 shown in the figure and lowering the cassette holder towards the apparatus, the locking means provided on the cassette holder engages with the fixing bin provided on the apparatus, and the cassette holder is attached to the apparatus. mounted in place.

The tape cassette 1 is equipped as shown in FIG.

When the loading motor 19 is mounted at a predetermined position, the loading motor 19 starts rotating normally as described above, and decelerates the terminal gear assembly 23 via the worm gear 20, worm wheel 21, etc. connected thereto.

By driving the terminal gear structure 23, this driving force is transmitted to the take-up gear 28 of the tape loading mechanism 15 via the intermediate gear 27 provided therein, and is transmitted counterclockwise in FIG. The guide drum 11 shown in FIG. On the other hand, this winding gear 28 drives the large gear 31, small gear 32, etc. of the gear assembly 30 that meshes with the winding gear 28 via the idle gear 29, thereby applying this driving force to the tape loading gear that meshes with the winding gear 28. The signal is transmitted to the other supply gear 33 of the mechanism 15, and in synchronization with the take-up gear 28, it is rotated clockwise in FIG. Rotate and drive.

Further, by driving the supply gear 33 disposed above the tape loading mechanism 15, the supply side pole base 48, which has a vertical roller pole 46 and an inclined fixed pole 47 connected thereto, moves on the guide rail 45 in the first position. It is moved clockwise in the figure to a predetermined position.

As the pole base 48 on the supply side moves, the tension arm 119, which is locked to the pole base 48 and is biased with a counterclockwise rotational force by a torsion spring, changes from the state shown in FIG. 19(A) to the state shown in FIG. As shown in (B), the pin 124 locks the one end locking portion 123a of the head base 123 at the same time as the pole base 48 is released from the locking state and rotates counterclockwise.

As the supply-side pole base 48 continues to move due to the rotation of the tension arm 119, the head base 123, which is in contact with the supply-side pole base 48, is rotated about the shaft 122 in the counterclockwise direction, which is the escape direction.

This rotation of the head base 123 causes the tension arm 119 to rotate slightly in the time direction, so the tension band 114 moves in the Y2 direction, and the rotating body 112, which rotates integrally with the supply side reel feather 127, is in a relaxed state. maintained.

When the pole base 48 on the supply side is rotated counterclockwise by the bending groove 44a' and reaches the loading end position, as shown in FIG. 19(C), the head base 123
The head base 123, which had been rotationally displaced until then, returns to its original position f71 clockwise about the shaft 122 and is set at the desired setting position. At this time,
Since the tension band 114 is pulled in the Y1 direction and exerts an additional force on the supply side reel feather 127, the magnetic tape does not become loose.

In addition, during this low loading process, the take-up side pole base 57, which has a vertical roller pole 58 and an inclined fixed pole 59 connected thereto, is moved onto the guide rail 45 by the drive of the take-up gear 28 on the lower side of the tape loading mechanism. When the winding gear 28 is moved by a predetermined angle in the counterclockwise direction in FIG. The first lock *73a is locked.

Therefore, the pinch roller cam 73 is operated by a reversing spring 74 stretched between a spring bin 75 and a fixed bin 76 that are set upright on the pinch roller cam 73.
It rotates clockwise about shaft 72 against the force of.

As the pinch roller cam 73 rotates, the pinch roller arm 78 provided with the pinch roller 71 rotates counterclockwise around the shaft 77 via the link 81 connecting the connecting bin 79 and the spring bin 75, thereby pinching. The roller 71 is brought close to the capstan 80 side.

As the take-up gear 28 continues to rotate clockwise, the next bin 62a reaches the second locking groove 73b of the pinch roller cam 73, as shown in FIG. Since the pinch roller cam 73 is rotated while the spring 74 is bent, the link 81 is pulled in the direction of the arrow in FIG.
Rotate the capstan 8 counterclockwise around 7.
0, the next bin 62a moves as the take-up gear 28 rotates, and the axis of the link 81 crosses the line connecting the shaft 72, the spring bin 75, and the connecting bin 79 in a straight line, as shown in FIG. When the link 81 is displaced as shown in FIG. 1 and reaches the loading end position, the link 81 moves in the direction D using the bin 75 as a guide against the force of the spring 82 stretched between the link 81 and the pinch roller 71. is elastically crimped onto the capstan 80.

When this pinch roller 71 is pressed onto the capstan 80,
As described above, the above-described toggle mechanism including the pinch roller cam 73 transfers the pressure force of the pinch roller 71 to the take-up gear 28.
Further, a force in the rotational direction is applied to securely position the pole base 57. Simultaneously with this positioning of the pawl base 57, the biasing force of the reversing spring 74 is converted, and this force biases the take-up gear 28 to rotate clockwise, thereby crimping the pawl base 57 against the stopper portion 131. support. In other words, the reversing spring 74 functions as a second toggle spring. (Rec Paus in Figure 13
State e...Capstan 80 is stopped @) When positioning the pole base 57 on the winding side on a three-dimensional plane as shown in FIG.
The stopper portion 13 whose upper surface is provided at the end of the guide groove 44b
1 and the rear end on the side of the inclined pole 59 is supported by the guide rail 45, resulting in a pinched state.
The vertical roller pole 58 is supported vertically by an upper U-shaped recess 129 and a lower V-shaped recess 130 formed in the stopper part 131. Therefore, the pole base 57 is on the X axis at the loading end position.

Since the rotational displacement in the Y-axis and Z-axis directions is restricted, the positioning accuracy is significantly improved. Although the pole base 48 on the supply side is not shown, the pole base 5 on the winding side
7, the tongue piece 48a and the vertical pole 4
6 is positioned with high precision by the stopper part and the U- and V-shaped recesses above and below the stopper part.

On the other hand, in the movement process of each of the pole bases 48, 57, the driving of the terminal gear assembly 23 in conjunction with the driving of the loading motor 19 rotationally drives the cam gear 26 integrated with the cam gear mechanism 25 connected thereto. . As a result, the spiral cam groove 26a of the cam tooth lI26
The arm gear 34, to which the bin 35 is engaged, is rotated counterclockwise from the state shown in FIG. 16(A) to the state shown in FIG. 16(B) in accordance with the shape of the cam groove 26a. Arm gear 3
4, the fan-shaped gear 34a formed at the other end rotates the shaft gear 37 of the pole arm 36 on which the middle pole 39 is erected.
Rotate. This pole arm 36 is attached to the pole base 5
7, it is rotated clockwise about the pivot shaft 38 across the guide rail 45 and the fixed A/C head AH. And pole base 57
When the magnetic tape 2 reaches the three-dimensional inclined surface of the guide rail 45 and the magnetic tape 2 begins to be twisted, the leaf spring 42 of the lock arm 41 moves in accordance with the shape of the cam 43 and engages the base of the middle pole 39. By fixing the magnetic tape 2 to the guide drum 11, O-ding of the magnetic tape 2 to the guide drum 11 is completed.

In this way, by making the middle pole 39 rotatable so as to follow the movement of the pole base 57, the mechanism is simpler than the conventional standing type, and the tilt of the middle pole 39 can be managed easily. It is easy to use as a single item, it is easy to assemble, and the magnetic tape 2 is not damaged during tape loading.

Then, the magnetic tape 2 fed out from the supply reel hub 6 is transferred to an impedance roller 115 as shown in FIG.
．． Supply side vertical pole 46 via full width erase head 116
．． After the guide drum 11 is spliced and wound around an angle of about 270 degrees from the inclined pole 47, the guide drum 11 is wound around the vertical pole 58 on the winding side. The middle pole 39 with the inclined pole 59 attached and further rotated. Fixed A/C head AH&: After being attached, it is held between the main 1st block stun 80 and the pinch roller 71 and reaches the take-up reel hub 7.

When a recording switch (not shown) is turned on, the capstan motor 83 rotates normally (rotates clockwise) and rotates a pulley 87 connected by a belt 86.

The clockwise rotational force from the pulley 87 is shown in FIG.

j! (not shown) of the input gear 89 of the oscillating gear structure 85 as shown in FIG. By being transmitted through a friction plate (felt) or the like, it meshes with one gear 92 of a pair of left and right planetary gears 91 and 92 attached to the flange 88 so as to mesh with this input gear 89. The rotating force is rotated clockwise and transmitted to the lower large diameter gear 95 on the winding side, and further transmitted to the upper large diameter gear 97 on the winding side via the friction plate 96. transmitted to.

Therefore, in this state in which the tape cassette 1 is attached, the rotational force transmitted to the small gear 100 is transmitted to the gear portion 7a around the outer circumference of the take-up reel hub 7 in the cassette, causing it to rotate. (Rec shape B in FIG. 13) When the recording switch is turned on again, the capstan motor 83 is switched from the forward rotation state in the clockwise direction to the reverse rotation state in the counterclockwise direction.

With this switching, the planetary gear 91 now has a large diameter tooth on the supply side that becomes the input flange of the one-way clutch mechanism 109.
110, the rotational force from the capstan motor 83 is transmitted, and this rotational force is transmitted to the friction plate 125 and the coil spring 1.
26 to the supply reel feather 127, the supply reel 6 in the tape cassette 1 is rotated, and the tape that has been wound on the take-up reel for several frames is reversely wound on the supply reel hub 6. (Backspace) At this time, due to the existence of the pair of planetary gears 91 and 92 meshing with the input gear 89 of the oscillating gear structure 85, the input gear 89
Since the rotational displacement angle of the magnetic tape can be minimized, the occurrence of slack in the magnetic tape can be minimized, tape damage can be reduced, and control pulses can be accurately read by the A/C head AH.

At this time, since the part 0111 of the one-way clutch mechanism 109 in the supply side reel feather 127 is on the biting side, winding is possible with the load applied by the tension band 114.

Thereafter, the capstan motor 83 is again advanced in the forward rotation direction by several frames less than the backspace, and then the capstan motor 83 is stopped. Then, when the recording switch is turned on again, the capstan 80 is driven to rotate in the normal direction due to the normal rotation of the capstan motor 83.

When the power switch is turned off in this Re C or G, t Re CP a LJ S e state (the state shown in FIG. 13).

As a result of the above-described operation, the loading motor 19 rotates in the reverse direction, and in conjunction with this, the loading ring rotates to separate the pinch roller from the capstan. The mode sensor unit 128 detects this state, and the device again enters the ReC lock state as shown in FIG.

Thereafter, except for continuous recording, the power switch is turned off after a certain period of time has elapsed.

When the power switch is turned on again, the loading motor 19 rotates in the normal direction, and as shown in FIG.
When the recording switch is turned on after entering the e state, the recording mode is entered and predetermined recording is performed.

When a predetermined recording is completed and an eject switch (not shown) is turned on, the O-ding motor 19 is reversely rotated to enter an unloading state.

In the unloading state, the bin 6 of the winding gear 28 on the winding side
2c pushes the eject lever 65 to release the cassette housing from the locking means and lift the cassette housing. This allows the tape cassette 1 to be taken out from the apparatus.

When the mode sensor section 128 detects this eject mode, the loading motor 19 rotates normally, and each element enters the stop mode state shown in FIGS. 1, 3, etc.

Although only recording has been described in the embodiment of the present invention, it goes without saying that reproduction can also be performed in the same way.

(Effects of the Invention) As described above, according to the magnetic recording and/or reproducing device of the present invention, for example, the magnetic tape can be moved from forward running when it is fed and sent out from a loop to reverse running such as rewinding. At the time of transition, when one of the pair of idlers on the third rotating body is disconnected from the second rotating body on the take-up side, the other idler moves to the supply side reel feather at the same timing. It is connected to the second rotating body that drives the reel and immediately drives it in reverse, and the one-way clutch mechanism built into the supply side reel feather allows mode conversion to be performed without loosening the tension arm. It is possible to obtain smooth and high responsiveness with a small number of parts without using as many parts as possible, and to reduce power consumption by reducing the load acting on the drive motor.

Furthermore, the simplification of the mechanism allows the desired operation to be performed in a small space, thereby contributing to the miniaturization and weight reduction of the device.

[Brief explanation of drawings]

1 to 5 show a stop mode state before loading a tape cassette of a preferred embodiment of the magnetic recording and/or reproducing apparatus according to the present invention, and FIG. 1 shows the magnetic recording and/or reproducing apparatus according to the present invention.
2 is a right side view of FIG. 1; FIG. 3 is a plan view showing a pole base drive system including a loading ring; FIG. 5 is a plan view showing a tape reel drive system including a capstan, FIG. 5 is a longitudinal sectional view of FIG. 4, and FIG. 6 (A
), (B) are a schematic sectional view and external perspective view of the guide drum, FIG. 7 is a side sectional view of the gear mechanism shown in FIG. 1, and FIG. 8 (
A) and (B) are assembled plan views of the loading ring on the supply side and the loading ring on the take-up side, and FIG. 9 is a perspective view of a small tape cassette installed and used in the magnetic recording and/or reproducing apparatus of the present invention. Fig. 10 is a side view of the tape guide, Fig. 11 is a plan view showing the state of the eject lever and pole base in eject mode, Fig. 12 is an explanatory diagram of the operation in loading mode, and Fig. 13 is in ReC mode. Figure 14 is a diagram showing the state of the pole base and head base when the rope ink is completed. Figure 15 is a diagram explaining the operation of the head base during loading. Figures 16 (A) and (B) are the arm gear. An explanatory diagram of the operation of the pole arm that cooperates with the 1st
Fig. 7 is an explanatory diagram showing the movement process of the pole base, Figs. 18 (A) to (C) are operation explanatory diagrams showing the operation of the pinch roller that cooperates with the pinch roller cam, and Figs. 19 (A) to (C). )
20 is an operational explanatory diagram showing the relationship between the tension arm and the head base that cooperates with the pole base, and FIG. 20 is a timing chart. 1... Tape cassette, 11... Guide drum, 2
8... Winding side loading gear, 33... Supply side loading gear, 46.58... Vertical pole, 47.59... Inclined pole, 83... Capstan motor, 89... Input Gear (third rotating body), 91.92...
- Idler, 95... Large diameter gear (first rotating body), 109... One-way clutch, 110... Large diameter gear (second rotating body), 114...
Tension arm, 119...Tension arm. 8 fl (A)? 8th torture (73)

Claims (1)

[Claims] a supply side loading means having a vertical pole and an inclined pole for pulling out a magnetic tape from a tape cassette mounted on the apparatus and guiding the magnetic tape at an entrance side and an exit side to a tape guide drum equipped with a rotating magnetic head; A magnetic recording and/or reproducing apparatus comprising a winding-side loading means, in which the magnetic tape is wound around the tape guide drum over a predetermined angle range, the winding reel hub of the tape cassette being rotationally driven. a supply side reel feather that includes a first rotating body and a second rotating body that rotationally drives the supply reel hub of the tape cassette, and has a one-way clutch mechanism; the first rotating body and the second rotating body; A third rotary body is provided with a pair of idlers facing each other so as to selectively drive the supply reel feathers, and is driven by a reversible motor, and a tension arm that controls the tension of the magnetic tape. the third rotation without operating the tension arm when the magnetic tape switches from normal rotation to reverse rotation in which the magnetic tape travels from the supply reel hub to the take-up reel hub; The magnetic reel is characterized in that one rotating body on the body selectively rotationally drives the second rotating body, thereby operating the one-way clutch mechanism and rotationally driving the supply side reel feather. Recording and/or playback equipment.