JPS62232756A - Magnetic recording and/or reproducing device - Google Patents

Abstract

PURPOSE:To simplify a mechanism part, to reduce a height dimension, and to attain the miniaturization and the lightening of a device, by constituting the device so that a middle pole performs a prescribed turning and displacement on a chassis according to the turning of a cam driven with a take-up gear and a supplying gear. CONSTITUTION:The titled device is constituted so that a tape loading means consisting of a supply gear 33 and a take-up gear 28, and a gear mechanism which drives the means, are provided respectively on the upper plane of a chassis 14, and also, in a process changing from the stop state of a device 10 to the tape load completing state of the device, a middle pole 39 on a pole arm 36 which guides a magnetic tape 2 to a take-up reel within a tape cassette 1, turns and displaces so as to follow the movement of a pole base 57 according to the turning of the cam 43 of a cam gear 26 driven with the take-up gear 28 and the supply gear 33. In this way, it is possible to simplify the mechanism part, and to reduce the height dimension of the device, and to miniaturize and lighten the device. Furthermore, it is possible to evade the damage of the tape in a tape loading process.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a magnetic recording and/or reproducing device, and more particularly to a tape loading means comprising a supply side loading means and a take-up side loading means, and this tape 0- A 6!1 wheel mechanism that drives the tape loading means, a guide pole mechanism that rotates the guide pole to follow the passage of the tape guide member of the tape loading means, etc. are arranged on the chassis to make the device thinner and smaller. The present invention relates to a magnetic recording and/or reproducing device that is easy to assemble.

(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 tape guide drum at approximately 270 degrees, exceeding the current approximately 180 degrees, and to wind the video head at 90 degree intervals. There is an idea that by providing four guide drums, the diameter of the guide drum can be reduced to two-thirds of the current diameter, thereby reducing the diameter of the guide drum and thereby achieving downsizing of the VTR.

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, in such a conventional recording/reproducing device,
1 Loading motor provided on the sheath is equipped with a tape guide member having a pair of vertical poles and an inclined pole disposed under the chassis via a group of reduction gears disposed vertically across the chassis. Since the device is configured to drive a ring, the complexity of the loading ring drive mechanism not only makes assembly difficult, but also increases the height of the device, making it difficult to downsize the device. It had become.

In addition, in this conventional device, during tape loading in which the magnetic tape in the mounted tape cassette is attached to the outer periphery of the guide drum at a predetermined angle range, the tape guide member reaches near the loading end position. At this time, after the tape guide member has passed, the guide pole (middle pole) for guiding the magnetic tape into the tape cassette is erected by the erecting means.

That is, a cam gear on the chassis is driven as the loading motor rotates, thereby rotating the audio control head (A/C head) and rotating the pawl lever. The rotation of this pole lever drives a rotation shaft placed vertically through the chassis through pins and leaf springs, and the rotation of this drive shaft through a connecting plate and an upright lever placed under the chassis. By raising the middle pole at an angle of about 70 degrees, the middle pole enters inside the tape path that is being formed and guides the magnetic tape.

In this way, by arranging each drive element for operating the middle pole across the top and bottom of the chassis, the drive path of the middle pole becomes WI, the number of component parts increases, and the number of assembly steps increases. Becomes large. Furthermore, due to the increase in the number of components, it becomes difficult to control the inclination angle of the middle pole, making it difficult to accurately position it.

In this way, since many components are driven by the loading motor, the capacity of the motor becomes large, which makes it difficult to downsize the motor.

Furthermore, since the middle pole is raised and entered inside the tape path that is being formed near the tape loading end point 6, the set position of the middle pole tends to shift.

For this reason, the tape is pushed more than necessary by the three-dimensional inclined surface that exists near the loading end position of the guide rail that guides the tape loading member, and there is a possibility that the magnetic tape may be damaged.

(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
．． 59, etc., and a winding side loading means 28, and the magnetic tape 2 is wound around the tape guide drum 11 over a predetermined angle range. and/or in the playback device, a tape loading means consisting of the supply side loading means 33 and the take-up side loading means 28, a gear mechanism 16 for driving this tape loading means, and a gear mechanism 16 for driving the tape loading means are provided on the upper surface of the chassis 14; When forming a tape path in which the tape loading means moves to the loading end position, the gear mechanism 16 is driven to rotate and displace the tape guide members 58 and 59 to guide the magnetic tape 2 to the tape cassette 1. Pole arm 36 with guide pole 39
The present invention provides a magnetic recording and/or reproducing device characterized in that the following are arranged.

(Function) A tape loading means consisting of a supply gear 33 and a take-up gear 28 shown in FIGS. 8(A) and 8(B) and a gear mechanism 16 for driving this tape loading means are mounted on the upper surface of the chassis 14.
The magnetic tape 2 is placed in the tape cassette 1 during the process in which the mount W110 goes from the stopped state shown in FIG. 1 to the tape loading completed state shown in FIG.
The middle pole 39 on the pole arm 36, which is guided to the take-up reel hub 7 in With the rotation of 43, the pole base 5
Since the structure is configured to rotate and displace on the chassis 14 so as to follow the movement of the loading motor 7, the mechanism can be simplified and the height of the device can be reduced. It is possible to reduce the size and weight of the magnetic tape 2 and to make it easy to manage the middle pole 39 during assembly due to its simple structure, and also to avoid damage to the magnetic tape 2 during the tape loading process.

(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 force set 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 casing 3 that houses a magnetic tape 2, and a cassette casing 3, which is provided on the front side of the cassette cassette 3 so as to be openable and closable, and guided by left and right guide rollers 5.5.
M4 protects the magnetic tape 2 crossing the front surface of the magnetic tape 2.

In this tape cassette 1, a supply reel hub 6 is fitted into a supply side reel feather of a giio (described later), and a gear portion 7a on the outer peripheral surface of a take-up reel hub 7 is connected to a drive gear (a second
(indicated by cylinder number 100 in the figure), and the concave portions 3a and 3b on the front side of the cassette housing 3.

Vertical and inclined loading poles, capstans, etc., which will be described later, are relatively fitted into the magnetic recording and/or reproducing apparatus 3C, and the magnetic recording and/or reproducing apparatus 10 is mounted with the lid 4 rotated to a horizontal position and opened. .

1 to 5 show a preferred embodiment of a magnetic recording and/or reproducing device 1110 according to the present invention, each showing a stop mode state before loading a tape cassette, and FIG. and/or a schematic plan view excluding tape guide means such as a loading ring of the playback device 10, a second
The figure is a right side view of Fig. 1, Fig. 3 is a plan view showing the pole base drive system including the loading ring, Fig. 4 is a plan view showing the tape reel drive system including the capstan, and Fig. 5 is the top view showing the tape reel drive system including the capstan. It is a longitudinal cross-sectional view of the reel drive mechanism shown in the figure.

In each figure, the magnetic recording and/or reproducing apparatus 10 includes a tape loading mechanism 15, which constitutes a part of the main part of the present invention, for pulling out a magnetic tape and winding it around a guide drum 11 at a predetermined angle; A gear mechanism 16 consisting of a plurality of m-revisions that drives the tape loading mechanism 15 and a middle pole serving as a tape guide for correcting the surface of the running tape, and a tape reel of the tape cassette 1, etc. The reel drive 11 is generally composed of a reel drive 11 and a structure 17 for driving the reel, and these are all provided on the chassis 14.

In Figures 1 and 2, numeral 11 is a tape guide drum (guide drum) in which, for example, four video heads (rotary 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 2/3 of that of a conventional drum, and the magnetic tape is rotated at an angle of more than 270 degrees. wrapped. The video head operates by sequentially switching the tape attaching angle range as a negative operation unit, and the same track pattern as the current model 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 in the device 10 is small, and the
0 means small size.

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 13a1 to 13a4 having sequentially 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 1
1 has its legs 13a1...13 with respect to the chassis 14.
If the a4 are directly fixed with screws 18, etc., they can be mounted while maintaining a predetermined inclination angle, so high mounting accuracy can be ensured, and the mounting of this guide drum 11 requires less space and can be mounted on other mechanisms on the chassis 14. This makes it possible to secure space for the 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. A loading motor 19 that directly drives this gear mechanism 16 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 is configured 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 tooth JI27 of the terminal gear structure 23 connects to a lower annular winding-side loading gear (winding gear) 28 disposed in upper and lower stages of the tape loading mechanism 15.
This is driven to rotate counterclockwise around the guide drum 11 shown in FIG.

Then, the take-up gear 28 decelerates and drives the large gear 31 of the gear assembly 30 meshing with the idle gear 29, thereby driving the small gear 32 that is integrated with the large gear 31. The upper supply side loading gear (
Supply gear) 33 is decelerated clockwise. Therefore, when the loading motor 19 is driven to rotate in the forward direction, its rotational driving force decelerates the winding gear 28 at a predetermined speed via the worm wheel 21 and the terminal gear assembly 23. By driving the gear 28 and decelerating the gear assembly 30 again via the idle gear 29, the supply gear 33 is moved around the guide drum 11 shown in FIG. 1 at a lower speed in synchronization with the take-up gear 28. The winding gear 28 is rotated in four directions' (the winding gear 28 is counterclockwise). This difference in the rotational speed of the rewinding/supplying gears 28, 33 is due to the length of each moving path of the pole base, which will be described later.

34 is an arm gear, and as shown in FIG. 16, a pin 35 installed at one end is locked in a spiral cam groove 26a formed in the cam gear 26, and a pin 35 is installed at the other end. The fan-shaped gear 34a thus formed meshes with a shaft gear 37 of a pole arm 36 having an upright middle pole (guide pole) 39 inclined at one end, and rotates counterclockwise about a 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.

Cam gear 26 driven by loading motor 19
When the arm gear 34 rotates in the counterclockwise S1 direction due to the rotation of It comes into elastic contact with the outer peripheral surface of the cam 43.

Therefore, during tape loading when the arm gear 34 rotates a predetermined angle counterclockwise about the pivot shaft 38,
The shaft gear 37 meshing with the sector gear 348 rotates clockwise in the opposite direction, and the pole arm 36 rotates clockwise, changing from the state shown in FIG. 16(A) to that shown in FIG. A fixed on the base plate while crossing the guide rail 45
/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 O-lock arm 41 is in a position where its leaf spring 42 abuts against the small diameter portion 43a of the cam 43 to allow movement of the middle pole 39, and this pole During recording/reproduction when the arm 36 rotates, the lock arm 41
When the plate 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
As shown in Figure (B), the lock arm 41 is attached to the middle pole 3.
9 to lock it in place.

Next, the tape loading mechanism 15 will be specifically explained.

As shown in FIGS. 1, 3, and 8 (A) and (B), the tape loading mechanism 15 winds the magnetic tape along the outer periphery of the guide drum 11 in an angular range of about 270 degrees. Therefore, a supply side guide groove 448 is formed on the left side, and a winding side guide groove 44b having a longer path than the supply side guide groove 44a is formed on the right side.
4, an upper supply gear 33 serving as a tape loading means having the above-mentioned shape (ring) disposed between the lower part of the guide rail 45 and the chassis 14, and a lower supply gear 33 that serves as a tape loading means. This generally consists of a winding gear 28.

Each guide groove 448, 44b of the guide rail 45 is shown in FIG.
As shown in FIG.
4t)+ and arcuate portions 44a2 and 44b2 connected to each other.

The supply side guide groove 44a is located on the chassis 14, while
In the winding side guide groove 44b, the terminal end of the circular arc portion 44b2 corresponds to the inclination angle and mounting height of the guide drum 11, and is sequentially displaced to the lower side of the chassis 14 (center) in order to maintain the magnetic tape horizontally. The first section slopes downward sequentially toward the rear of the section.
It has a three-dimensional inclined surface (as shown in Figure 0).

At the end of the arcuate portion 44b2, a vertical roller pole 58 as shown in FIG.
A substantially U-shaped stopper portion 13 having a U-shaped recess 129 and a V-shaped recess 130 formed above and below, each having a shape corresponding to the diameter of
1 is provided.

On the other hand, the end of the arcuate portion 44a2 on the supply side has a groove 44a2 that bends inward toward the guide drum 11 from the vicinity of this end.
' and a bent groove 44a2N bent on the opposite side to the groove 44a2', forming a substantially Y-shape.

Similarly to the end of the guide groove 44b on the winding side, a U-shape is formed at the end of one of the divided arcuate portions 44a 217 to support the vertical roller pole 46 on the pole base 48 above and below. A stopper portion (not shown) is provided in which a V-shaped recess and a V-shaped recess are formed above and below. Therefore, a pole base 48 in which a freely rotatable vertical roller pole (vertical pole) 46 and an inclined loading pole (inclined fixed pole) 47 are erected in close proximity is used to guide the guide rail as shown in FIGS. 13 and 17. When the loading end position is reached from the stop mode position along a 44 a, the leading vertical pole 46 side is guided by the bending groove 44a2'', and this pole base 48 is guided along the arc of the other bending groove 44a2'. At the same time, the rear inclined pole 47 side is rotated counterclockwise around the vertical pole 46, and at the same time, the shaft of the vertical pole 46 is supported by the upper and lower U- and V-shaped recesses of the stopper portion, and the pole base 57 is rotated. Positioning is done.

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 FIG. 8 (A>(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, 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 53t) as a guide is placed on the upper surface thereof, and relative movement of the guide plate 53 is restricted by a tension spring 61 stretched between the two. A connecting rod 55 is rotatably supported on one side of the elongated hole 53a of the guide plate 53 and is movable up and down about a shaft 54. Reference numeral 57 denotes a take-up side pole, which has a vertical pole rotatably supported on a shaft and an inclined fixed pole 59 erected in close proximity to each other, and moves on the guide rail 45 using the lower part of the vertical pole 58 as a guide shaft. It is a base, and the stopper part 13 is at the tip on the moving side.
A tongue piece 57a that penetrates into the inside of the body 1 is formed. The pole base 57 is mutually pivotally supported on the side of the inclined fixed pole 59 by the connecting rod 55 via the swinging rod 60, so that it rotates horizontally on the winding gear 28, and the connecting rod 55
Due to this action, it can be moved up and down together with the swinging rod 60.

Therefore, when the take-up gear 28 is driven by the gear mechanism 16 and rotates counterclockwise during tape loading, 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 vertical movement of the connecting rod 55 ensures that the pole base 57 reaches the loading end position on the three-dimensional slope as shown in FIGS. 13 and 17. .

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

62b and 62C are arranged one after another with a predetermined interval maintained, and the bins 62b and 62a are located on the dipping side of the guide plate 53 and are connected to a pinch roller cam 73 which will be described later.
The pin 62c is driven sequentially by the pins 62b and 6 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 is constructed similarly to the take-up gear 28 as shown in FIG. 8(B), and has a long hole 3.
A guide plate 64 with bins 65 and 66 that slide using 4a and 34b as guides is placed on its upper surface, and relative movement is restricted by a tension spring 67 stretched between the two. . And this guide plate 64
A connecting rod 70 is mounted above the bottle 68 and is rotatable about a shaft 69. 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 roller 71 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 respectively, and these re-inspection grooves 73a, 73
A spring pin 75 is installed on the outer periphery of the side facing b and the circulation 72.
has been erected. In other words, the re-examinations 173a and 73b and the bin 75 have a substantially triangular positional relationship.

When the take-up gear 28, which is rotated counterclockwise by the terminal gear structure 25 via the gear mechanism 16, rotates by a predetermined angle, the take-up gear 28 is erected as shown in FIG. 18(A). The preceding pin 62b locks the first locking groove 73a of the disc-shaped pinch roller cam 73 supported by the shaft 72.

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 winding gear 28 continues to rotate counterclockwise, the bin 62b is disengaged from the first locking groove 738, and the next bin 62a located on the rear side is moved to the position shown in FIGS. 12 and 18 (B).
), the second locking groove 7 of the pinch roller cam 73
3b and locks this, the pinch roller cam 73 is rotated while further bending the reversing spring 74, so the link 81 is further pulled in the direction of the arrow, and the pinch roller arm 78 is rotated counterclockwise about the shaft 77. direction and bring it close to the capstan 8o.

At this time, the toggle mechanism adjusts the distance fmft+ between the center of the shaft 72 of the pinch roller cam 73 and the axis of the link 81, the distance Wn12 between the spring pin 75, the force F1 acting on the link 81 in the D direction, and the The relationship with the force F2 acting in the rotational direction is Fl.1+=F2.It2.

Therefore, near the peak position of the toggle mechanism where the axis of the link 81 approaches the center of the shaft 72 due to the clockwise rotation of the pinch roller cam 73, the relationship becomes 12>>Il+, so Fl>>F2. With the small rotational force of the pinch roller cam 73, a large force necessary to operate the pinch roller 71 can be obtained, and as a result, the load on the loading motor 19 can be reduced.

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 shaft 72 and moves from the center position of the shaft 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 the 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.
Since a force F is generated, this force acts in the rotational direction of the take-up gear 28 and supports the pressing force of the pole base 57 when it reaches the loading end position. The pinch roller 71, which has been pulled in the D direction by the toggle mechanism made up of the pinch roller arm 78, the link 81, and the pinch roller cam 73, is reliably attached to the capstan 80 with a predetermined force due to the small rotational force of the pinch roller cam 73. Since it is elastically crimped, the load on the take-up gear 28 that drives the pinch roller cam 73 is reduced, and at the same time, the load on the loading motor 19 is reduced, thereby contributing to miniaturization of the loading motor 19 and drive components. This makes it possible to reduce the weight accordingly.

Further, when the pinch roller 71 is pressed 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, so that the pinch roller cam 73 is pressed against the capstan 80. second elastic means) 82
Since the rotational force in the clockwise direction is applied by the reversing spring 74 and the rotational force in the clockwise direction, when the loading motor 19 is stopped and loading is completed, the rotational force due to the above-mentioned urging force of the pinch roller cam 73 is applied to the winding through the bin 62a. By further applying rotational force to the gear 28 in the normal 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 the pinch row 571 is attached can be absorbed.

In this way, by reducing the operating force of the pinch roller ruff 1, the design strength of each component related thereto can be reduced, thereby reducing the weight and improving the reliability of the device 10.

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

As shown in FIG. 2, the capstan motor 83 which has a flywheel 93 on its shaft and drives the capstan 80 has a pulley 84 integrated with the flywheel 93 and a belt 86.
A rocking tooth supported on a shaft 90 via a flange 88 fixed on the chassis 14 via! The pulley 87 of the I structure 85 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 friction plate (such as felt) not shown, which is attached to the 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 tooth 1195 rotating around a shaft 94. in a state. This large diameter gear 95 has a friction plate 96
an upper large-diameter gear 97 of approximately the same diameter that rotates coaxially through the
Further, this large-diameter gear 97 meshes with a small gear 99 that rotates around a shaft 98 and has a small gear 100 integrally provided at its upper part. Therefore, when the tape cassette 1 is installed in the device 10 as shown in FIG. By being kept horizontal, the upper pinion 10
0 meshes with the gear portion 7a on the outer peripheral surface of the take-up reel 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 contacts the drum portion 95a of the large-diameter gear 95 and brakes it, during forward rotation such as during recording when the magnetic tape is run in the forward direction by the pinch row 571 and the capstan 80, Transferring pinch roller 71! I] In conjunction with the operation, the brake pad 106 is moved away from the drum portion 95a to release the load on the drum portion 95a.

Further, the other planetary gear 91 located on the left side of the oscillating gear structure 85 is connected to a one-sided clutch 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 14. Mechanism 109
It is in a state of selective meshing with the large diameter tooth 11110 which becomes the input flange. This large diameter gear 110 has a friction plate 12
5 and rotates integrally with the supply side reel feather 127.

On the outer peripheral surface of the rotating body 112 of the internal one-sided clutch mechanism 109, which is an output that can be connected to the supply side reel feather 127 via the rollers 111, one end is fixed to the chassis 14, and the other end is a tension arm which will be described later. A tension band 114 connected to one end of the arm lever 113 connected to the arm lever 119 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-sided 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. Therefore, it also contributes to miniaturization and weight reduction of the device 10.

Here, again, FIGS. 1, 14, and 19(A) to
(C) using the above supply side pole base 48 and III.
! The operations of the tension arm 119, arm lever 113, and Kanayama erasing head 116 will be described.

The tension arm 119 is rotatably supported by @ 120 erected on the chassis 14 , and has one end facing the pole base 48 so as to be latched onto the base 11 .
An arm lever 113, which locks the tension band 1'14, is rotatably supported on the arm lever 9a. Although this tension arm 119 is biased with a counterclockwise rotational force by a biasing means such as a torsion spring (not shown),
In the stopped state shown in FIG. 1, the supply side pole base 48, which has returned to the rest position, is locked and stopped 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 Bonyl base 48 on the supply side moves toward the loading end position within the guide 144a on the supply side with the vertical roller pole 46 as the leading end, the tension arm 119 in the state shown in FIG. As shown in Fig. 19 (A), the pole base 48 is connected to the parallel part 44.
During the movement process from a1 to the arcuate portion 44a2, it gradually separates from the pole base 48, so that the locked state is released and the self-returning force of the torsion spring allows the counterclockwise return of rotation around 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 clockwise rotational force is applied to the head base 123. 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 roughly contacts 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 tight 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 1ffi of the device and improves productivity in 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 provided on 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 surface of the device and pressed, the tape cassette 1 is pushed by the action of a pantograph 2 mechanism (not shown) provided at the bottom of the cassette holder. It descends to a predetermined position on the device side, and 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 device 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 rotation 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.
Parallel portion 44a+ of 4a, 44b, bent portion 44t) slightly retreat toward the z side. When the mode sensor unit 128 detects this eject mode, the eject lever 65 and each bow base 48, 57 return to the positions shown in FIG. 1, respectively. Then, by inserting the tape cassette 1 shown in FIG. 9 into the raised cassette holder and lowering the cassette holder toward the apparatus, the locking means provided on the cassette holder can be attached to the fixing bin provided on the apparatus. The cassette holder is mounted in place on the device by engaging the cassette holder.

When the tape cassette 1 is installed in a predetermined position on the RA 10 as shown in FIG. 2, the loading motor 19 starts rotating normally as described above, and the worm gear 2 connected thereto
0. The terminal gear assembly 23 is decelerated and driven via the worm wheel 21 and the like.

By driving the terminal gear structure 23, this driving force is transmitted to the winding gear 28 of the tape loading mechanism 15 through the intermediate teeth 127 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 (8), 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 that is in contact with the supply side pole base 48 is rotationally displaced about the shaft 122 in the counterclockwise direction, which is the escape direction. .

As the tension arm 119 rotates slightly clockwise due to this rotation of the head base 123, the tension band 114 moves in the Y2 direction, and the rotating body 112, which rotates integrally with the supply side reel feather 127, maintains a relaxed state. be done.

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, is rotated back clockwise about the shaft 122 and set at the desired setting position. At this time, the tension band 114 is pulled in the Y1 direction and exerts an additional force on the supply side reel feather 127, so that the magnetic tape does not become loose.

In addition, during this O-brooding 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 to the guide rail 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 locking groove 73a of the cam 73 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 bending the pinch roller cam 74, 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, by the above-mentioned toggle mechanism including the pinch roller cam 73, the pressing force of the pinch roller 71 is transferred 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
e state...the state in which the capstan 80 is stopped) When the pole base 57 on the winding side is positioned 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 cam gear 26 integrated with the cam gear mechanism 25 connected thereto is rotationally driven by the drive of the terminal tooth structure 23 in conjunction with the drive of the loading motor 19. Ru. As a result, the spiral cam groove 26 of the cam lfI wheel 26
The arm gear 34 to which the pin 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. As the arm gear 34 rotates, the fan-shaped gear 34a formed at the other end rotates the shaft gear 3 of the pole arm 36 on which the middle pole 39 is erected.
Rotate 7. The pole arm 36 rotates clockwise about the pivot shaft 38 to follow the movement of the pole base 57 across the guide rail 45 and the fixed A/C head AH. And pole base 5
7 reaches the three-dimensional inclined surface of the guide rail 45 and the magnetic tape 2 begins to be twisted, at the same timing, 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, loading of the magnetic tape 2 onto the guide drum 11 is completed.

In this way, by making the middle pole 39 rotatable on the chassis 14 so as to follow the movement of the pole base 57, the mechanism is simpler than the conventionally used upright type, and moreover, the middle pole 39 The inclination of the magnetic tape 2 can be easily managed as a single item, the assembly is easy, 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
．． The vertical pole 58 on the winding side is connected to the guide drum 11 over an angular range of about 270 degrees from the inclined pole 47. Middle pole 39 with five inclined poles attached and further rotated. After being attached to the fixed A/C head AH, it is sandwiched between a capstan 80 and a 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.

The input gear 89 of the oscillating gear structure 85 as shown in FIG.
It meshes with one gear 92 of a pair of left and right planetary gears 91 and 92 attached to the winder 8, which rotates counterclockwise and is transmitted to the lower large-diameter gear 95 on the winding side. This rotational force is transmitted to the upper large-diameter gear 97 on the winding side via the winding gear 96, and the rotational force is also transmitted to the small gear 99.

Therefore, in this state in which the tape cassette 1 is installed, the rotational force transmitted to the small gear 100 is transmitted to the gear portion 7a on the outer circumferential surface of the take-up reel hub 7 in the cassette, causing it to rotate. (The Rec state 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 state in the counterclockwise direction δ1.

Along with this switching, the planetary gear 91 now meshes with the large-diameter gear 110 on the supply side, which serves as the input 7 langage of the -direction crutch mechanism 109, and receives the rotational force from the capstan motor 83. Friction plate 125, 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, the one-way clutch 1101109 in the supply side reel feather 127 becomes the biting side, so
Winding is possible while a load is 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 ReC or ReCPause state (the state shown in FIG. 13), the loading motor 19 rotates in the reverse direction due to the operation described above, and the loading ring rotates in conjunction with this, capping the pinch roller. Move away from Stan. The mode sensor section 128 detects this state, and the device returns to R as shown in FIG.
Enters eC lock state.

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 normally and enters the ReCPauSe state as shown in FIG. 13, and then when the recording switch is turned on, the recording mode enters and predetermined recording is performed.

When a predetermined recording is completed and an eject switch (not shown) is turned on, the loading 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 apparatus of the present invention, the tape loading means consisting of the supply side loading means and the take-up side loading means, and this tape loading means are provided on the upper surface of the chassis. When the gear mechanism is driven and the magnetic tape is moved to the loading end position by the tape loading means to form a tape path, the gear mechanism is driven to rotate and displace the magnetic tape so as to follow the movement of the tape guide member. By arranging pole arms each equipped with a guide pole that guides the cassette, the drive mechanism of the tape loading means is simplified, making it easier to assemble the device, and the height of the device can be reduced. . In addition, compared to the conventional complicated configuration in which the insulating parts for driving the guide poles are arranged across the top and bottom of the chassis, the drive path is simplified and the number of parts can be significantly reduced. It is possible to further reduce the size and weight of the loading motor, and as a result, the loading motor can be made smaller, parts can be easily assembled, and the guide pole can be easily managed. Furthermore, by rotating and displacing the guide pole on the chassis, the positioning accuracy is improved and the magnetic tape is not damaged.

[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 the pole base drive system including the loading ring; and FIG. FIG. 5 is a plan view showing the tape reel drive system including the stun, FIG. 5 is a 1lli side view of FIG. 4, FIGS. Side sectional view of the gear mechanism shown in FIG.
Figures (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 Figure 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. Figure 10 is a side view of the tape guide, Figure 11 is a plan view showing the state of the eject lever and pole base in eject mode, and Figure 1 is a side view of the tape guide.
Figure 2 is an explanatory diagram of the operation in loading mode, the first
Fig. 3 is an explanatory diagram of the operation in ReC mode, Fig. 14 is a diagram showing the state of the pole base and head base when rope inking is completed, Fig. 15 is an explanatory diagram of the operation of the head base during loading, and Fig. 16 (A ), (B
) is an explanatory diagram of the operation of the pole arm that cooperates with the arm gear that constitutes a part of the main part of the present invention, Fig. 17 is an explanatory diagram showing the movement process of the pole base, and Figs. 18 (A) to (C) are An operation explanatory diagram showing the operation of the pinch roller that cooperates with the pinch roller cam, FIG. The figure is a timing chart. 1... Tape cassette, 11... Guide drum, 1
4... Chassis, 19...-Motor, 28... Winding side loading gear, 33... Supply side loading gear, 36... Pole arm, 38... Pivot shaft, 39
...Middle pole (guide pole) 46.58...
Vertical pole, 47.59... Inclined pole. ! 24 5 years old θ /21 (A) f 8 El (B) ′! i 9 question age 10 area rA) 3) 16 year old T+'l+night

Claims (1)

[Scope of Claims] Vertical poles, inclined poles, etc. that pull out a magnetic tape from a tape cassette installed in an apparatus and guide the magnetic tape on the entrance side and the exit side to a tape guide drum equipped with a rotating magnetic head. A magnetic recording and/or reproducing device comprising a supply side loading means and a take-up side loading means each having a tape guide member, the magnetic tape being wound around the tape guide drum over a predetermined angle range, On the chassis, there is provided a tape loading means comprising the supply side loading means and the take-up side loading means, a gear mechanism for driving the tape loading means, and a tape path through which the magnetic tape is moved to a loading end position by the tape loading means. At the time of formation, a pole arm is provided with a guide pole that is rotationally displaced to follow the movement of the tape guide member by the drive of the gear mechanism and guides the magnetic tape to the tape cassette. Magnetic recording and/or reproducing device.