JP4239052B2 - Recording or playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel recording or reproducing apparatus. More specifically, a recording / reproducing position and a recording / reproducing mechanism for holding a recording medium cassette in which a tape-like recording medium is housed in a cassette shell and recording and / or reproducing the tape-like recording medium by approaching the recording / reproducing mechanism. The present invention relates to a technique for simplifying and downsizing a mechanism in a recording or reproducing apparatus including a cassette holding member that moves between a standby position separated from the mechanism.
[0002]
[Prior art]
A recording / reproducing position at which recording and / or reproduction is performed on the tape-shaped recording medium by holding a recording medium cassette in which the tape-shaped recording medium is housed in a cassette shell and holding the recording medium cassette is separated from the recording / reproducing mechanism. There is a recording / reproducing apparatus including a cassette holding member that moves between the standby positions.
[0003]
An example a of such a recording / reproducing apparatus is shown in FIGS.
[0004]
The recording / reproducing apparatus a includes a main chassis b and a slide chassis c that moves detachably with respect to the main chassis b. The main chassis b includes a rotary head drum d, tape drawing guides e and e, and the like. A recording / reproducing mechanism unit that performs recording and reproduction with respect to the recording medium is configured. The slide chassis c holds a recording medium cassette (not shown) and moves between a recording / reproducing position near the main chassis b for recording and reproducing on a tape-shaped recording medium and a standby position separated from the main chassis b. A holding member is configured.
[0005]
The tape pull-out guides e and e are for pulling out the tape-shaped recording medium from the recording medium cassette and winding it around the rotary head drum d. The tape pull-out guides e and e The synchronous gears f and f are supported at the tip, and are moved through a pull-out arm that rotates by synchronously rotating in the opposite direction.
[0006]
A driving force of a motor h that is a driving source fixed to the main chassis b is transmitted to the linear skate arm j through a gear train i. The linear skate arm j is rotatably supported by the main chassis b, and is rotated by the driving force of the motor h.
[0007]
A connecting pin k provided on the linear skate arm j engages with a connecting groove l provided on the slide chassis c. Therefore, when the linear skate arm j rotates, the slide chassis c becomes the main chassis b. Move so as to be separated.
[0008]
A tape guide slider m supported so as to move substantially in the front-rear direction on the main chassis b is moved by the rotation of the linear skate arm j, and a rack formed on the tape guide slider m. n is meshed with one of the synchronous gears f and f. Accordingly, when the tape guide slider m is moved in the front-rear direction, the synchronous gears f and f are rotated, whereby the tape drawing guides e and e are moved.
[0009]
Therefore, when the motor h rotates in one direction, the slide chassis c moves toward the recording / reproducing position, and the tape drawing guides e and e pull the tape-shaped recording medium from the cassette shell and wind it around the rotating head drum d. Moving. When the motor h rotates in the other direction, the tape pull-out guides e and e move in the opposite direction to the case where the tape-shaped recording medium is pulled out, and the slide chassis c moves toward the standby position.
[0010]
[Problems to be solved by the invention]
In the conventional recording / reproducing apparatus a described above, the linear skate arm j and the tape guide slider m are used to use the driving force of the motor h for the movement of the slide chassis c and the movement of the tape pull-out guides e and e. There is a problem that the number of parts is increased and the cost is increased, and there is a limit to downsizing in order to secure a space for arranging parts.
[0011]
Further, the synchronous gears provided at the base ends of the drawing arms g and g for moving the tape drawing guides e and e must be engaged with each other, and the drawing arms g and g are overlapped during rotation. Therefore, there is a problem in that downsizing of the apparatus is hindered.
[0012]
SUMMARY OF THE INVENTION An object of the present invention is to reduce the number of parts, thereby simplifying the mechanism and reducing the cost, and enabling downsizing of the apparatus.
[0013]
[Means for Solving the Problems]
In order to solve the above-described problems, the recording or reproducing apparatus according to the present invention includes a recording / reproducing mechanism section that includes a rotating head drum and performs recording and / or reproduction on a tape-shaped recording medium, and holds the recording medium cassette to perform the recording and reproduction. A cassette holding member that moves between a recording / reproducing position for recording and / or reproducing with respect to the tape-like recording medium when approaching the mechanism unit and a standby position separated from the recording / reproducing mechanism unit, and a tape-like recording that is moved in synchronization with each other A pair of tape pull-out guides for pulling out the medium from the cassette shell and winding it around the rotary head drum, and a pair of drive arms for moving the tape pull-out guide by rotating operation with the tape pull-out guides connected to the leading ends thereof. And the recording / reproducing mechanism section that is separated from each other and is rotatable and is provided at the base end of the driving arm and is driven by a rotating operation. 2 a pair of synchronous gears for rotating the over arm, and a pair of two racks which are meshed with another individual and the synchronized gear provided in the cassette holding member, the central portion in the longitudinal direction of the cassette holding member A projecting portion having a substantially rectangular shape is formed. The projecting portion is formed with the above-mentioned two pairs of racks on both side edges thereof, and a cam hole for moving the slide chassis is formed in the central portion thereof, and the cassette holding member is recorded. While the medium cassette is held and moved from the standby position to the recording / reproducing position, the rack rotates the synchronous gear to rotate the drive arm to move the tape pull-out guide, and the tape pull-out guide becomes the tape-shaped recording. The medium is pulled out from the cassette shell and wound around the rotary head drum.
[0014]
Therefore, the recording or reproducing apparatus according to the present invention does not require the linear skate arm and the tape guide slider which are conventionally required, and the number of parts is reduced, the mechanism is simplified, and it can be manufactured at a low cost. In addition, since the base end portions that are the pivot points of the drive arm for moving the tape drawing guide can be arranged apart from each other, the degree of freedom in design is increased, and the apparatus can be downsized. .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a recording or reproducing apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. The recording or reproducing apparatus shown in the accompanying drawings performs recording and reproduction on a magnetic tape using a tape cassette in which a magnetic tape is housed in a cassette shell as a recording medium.
[0016]
First, the tape cassette used in the recording or reproducing apparatus according to the present invention will be described.
[0017]
The tape cassette 10 has a thin box-shaped cassette shell 20 in which tape reels 40 and 50 around which the magnetic tape 30 is wound are rotatably accommodated, and a part of the magnetic tape 30 positioned along the front surface of the cassette shell 20. The front lid 60 covers the front side of the magnetic tape 30 and the back lid 70 covers the rear side of the magnetic tape 30. The back lid 70 is integrated with the front end of the slider 80 supported by the cassette shell 20 so as to be movable in the front-rear direction. Further, the front lid 60 is rotatably supported by the slider 80.
[0018]
The cassette shell 20 has a thin box shape and is formed of plastics. A large concave portion 21 called a mouse portion is formed in the front portion of the cassette shell 20. The mouse portion 21 is opened forward, upward and downward. A part of the magnetic tape 30 is located along the front surface of the mouse portion 21.
[0019]
Reel base insertion holes 22, 22 are formed in the bottom plate of the cassette shell 20, and the reel base provided in the recording / reproducing apparatus when the tape cassette 10 is installed in the recording / reproducing apparatus is the reel base insertion hole 22, 22 is inserted into the cassette shell 20 and the reel engaging shafts provided on the reel base are engaged with reel base engaging holes 41 and 51 formed in the tape reels 40 and 50 so as to open to the lower surface. Combined.
[0020]
A lid lock member 90 is disposed inside the left side surface portion 61 of the front lid 60. The lid lock member 90 locks the front rod 60 in a closed position covering the front surface of the magnetic tape 30 when not in use. It is like that.
[0021]
The recording / reproducing apparatus 100 includes a main chassis 110, a slide chassis 120, a moving frame 130, and a cassette holder 140. These members are housed in an outer casing (not shown).
[0022]
The main chassis 110 includes a main mechanism for pulling out the magnetic tape 30 such as the rotary head drum 150 and the tape pull-out guides 160 and 160 from the cassette shell 20 to form a predetermined tape path. A recording / reproducing mechanism 170 that performs recording and reproduction is configured.
[0023]
The tape drawing guide 160 is configured such that a rotatable guide roller 162 and an inclined guide 163 are erected on a slide base 161.
[0024]
The tape drawing guides 160 and 160 are moved by being guided by a slide rail 180. The slide rail 180 has a shape in which two rail portions 181 and 181 are opened in a substantially V shape from the front side to the rear side, and guide slits 182 and 182 are formed in the rail portions 181 and 181, respectively. The slide rail 180 is fixed to the main chassis 110 so that the rail portions 181 and 181 are separately located from the front side of the rotary head drum 150 to both sides slightly closer to the center. In the tape drawing guides 160 and 160, the slide bases 161 and 161 are slidably supported by the guide slits 182 and 182 of the slide rail 180, respectively.
[0025]
The tape drawing guides 160 and 160 are moved by drive arms 190 and 190. The drive arm 190 includes two arm pieces 191 and 192 that are rotatably connected. That is, the base end portion of the tip arm piece 192 is rotatably connected to the tip portion of the base arm piece 191. Two synchronous gears 200 and 200 are rotatably supported on the main chassis 110 so as to be separated from each other in the left and right directions, and base end portions of the base arm pieces 191 and 191 of the drive arms 190 and 190 are connected to the synchronous gear. The slide bases 161 and 161 of the tape pull-out guides 160 and 160 are rotatably connected to the tip portions of the tip arm pieces 192 and 192, respectively.
[0026]
A cam gear 210 is rotatably supported at a substantially central portion of the main chassis 110, and the cam gear 210 is rotated by a driving force of a motor 220 fixed to the rear end portion of the main chassis 110 being transmitted by a gear train 230. It has become so. The cam gear 210 has a drive pin 211 protruding therefrom.
[0027]
The slide chassis 120 is mounted with reel bases 240 and 240 for rotating the tape reels 40 and 50 of the tape cassette 10 and constitutes a cassette holding member 250.
[0028]
In the slide chassis 120, side plates 122 and 122 are erected on both sides of the bottom plate 121, and a front plate 123 is erected on the front portion of the bottom plate 121. The bottom plate 121 is formed with a substantially rectangular protrusion 124 protruding rearward at the center, and racks 260 and 260 are formed on both side edges of the protrusion 124.
[0029]
A cam hole 270 is formed in the protrusion 124. The cam hole 270 has a front arc edge 271 and a rear arc edge 272 positioned opposite the front arc edge 271, and is continuous with the right side of the two arc edges 271 and 272. A slit-like pressed portion 273 that is long in the left-right direction is formed.
[0030]
The above-described slide chassis 120 is supported by the main chassis 110 so as to be movable in the front-rear direction. The racks 260, 260 provided on the slide chassis 120 are respectively meshed with the synchronous gears 200, 200, and the drive pins 211 protruding from the cam gear 210 are positioned in the cam holes 270 of the slide chassis 120. Is done.
[0031]
The moving frame 130 has side plates 132 and 132 projecting downward from left and right side edges of the upper surface 131 having a substantially square frame shape, and the rear ends of the side plates 132 and 132 are the rear ends of the main chassis 110. And is urged upward by a torsion coil spring 133. Guide slits 132 a and 132 a extending in the front-rear direction are formed in the side plates 132 and 132.
[0032]
The cassette holder 140 is connected between the front upper plates 142 by the front upper plate 142 at the upper ends of the side plates 141 and 141, and by the rear upper plate 143 between the rear ends of the side plates 141 and 141. . Receiving plates 144 and 144 project from the lower edges of the side plates 141 and 141 so as to approach each other.
[0033]
The cassette holder 140 is supported by the moving frame 130 so as to be movable in the front-rear direction. Note that sliding pins 145 and 145 projecting from side plates 141 and 141, which are members supporting the cassette holder 140 to the moving frame 130, are slidably engaged with the guide slits 132a and 132a of the moving frame 130. Has been.
[0034]
One ends of the rotation links 280 and 280 are rotatably connected to portions of the side plates 141 and 141 of the cassette holder 140 protruding from the lower edges of the side plates 132 and 132 of the moving frame 130, The other ends of the links 280 and 280 are rotatably supported by the front end of the slide chassis 110.
[0035]
Next, a recording / reproducing operation using the tape cassette 10 will be described.
[0036]
The tape cassette 10 is inserted into the cassette holder 140 with the moving frame 130 pivoted upward and the cassette holder 140 in the eject position shown in FIG. 4 (see FIG. 9). By inserting the tape cassette 10 into the cassette holder 140, the tape cassette 10 is held in a space formed by the side plates 141, 141, the top plates 142, 143 and the receiving plates 144, 144, and the front by the lid lock member 90. When the lock of the lid 60 is released, the front lid 60 rotates upward, and the front lid 60 and the slider 80 (both the back lid 70) are moved to the rear of the cassette shell 20, and the mouse portion 21 of the magnetic tape 30 is moved. The part located in the front is opened, and the upper part of the mouse part 21 is opened.
[0037]
Next, when the moving frame 130 is rotated downward, the cassette holder 140 is also lowered accordingly. When the cassette holder 140 is lowered to the holding position at the lowermost end of the lowering range, the slide chassis 120 at the standby position is moved to the position. The provided reel bases 240 and 240 are inserted into the cassette shell 20 from the reel base insertion holes 22 and 22, and the reel engaging shafts 240 a and 240 a of the reel bases 240 and 240 are reel base engaging holes of the tape reels 40 and 50. 40a and 50a are engaged. Further, tape drawing guides 160 and 160 provided on the main chassis 110, a pinch roller (not shown), and the like are positioned in the mouse unit 21.
[0038]
The positional relationship between the main members when the slide chassis 120 is in the standby position is as shown in FIG.
[0039]
Then, the motor 220 is driven, and the cam gear 210 rotates in the counterclockwise direction as viewed in a plane, that is, in the direction of arrow A in the figure. When the slide chassis 120 is in the standby position, the front arc edge 271 of the cam hole 270 of the slide chassis 120 is positioned so as to follow the movement locus of the drive pin 211 of the cam gear 210. The slide chassis 120 moves to the right along the front arc edge 271 of the cam hole 270 of the slide chassis 120, and the slide chassis does not move during this time.
[0040]
When the drive pin 211 is positioned in the pressed portion 273 of the cam hole 270, the drive pin 211 presses the rear edge of the pressed portion 273 backward, so that the slide chassis 120 moves backward, that is, , Move in the direction of arrow B in the figure. FIG. 11 shows a state in which the slide chassis 120 is in the middle of moving backward.
[0041]
Further, as the slide chassis 120 moves rearward, the racks 260 and 260 rotate the synchronous gears 200 and 200. That is, the left synchronization gear 200 rotates counterclockwise, and the right synchronization gear 200 rotates clockwise. As the synchronous gears 200 and 200 rotate, the drive arms 190 and 190 rotate in predetermined directions, respectively, and the tape pull-out guides 160 and 160 connected to the distal end portions of the drive arms 190 and 190 become slide rails 180. The rails 181 and 181 are moved rearward (see FIG. 11), and the magnetic tape 30 is drawn from the cassette shell 20 by the tape drawing guides 160 and 160 and wound around the rotary head drum 150. .
[0042]
When the slide chassis 120 moves in the direction of arrow B and reaches the recording / reproducing position, the tape drawing guides 160 and 160 reach the end of the moving range, and the magnetic tape 30 is wound around the rotary head drum 150 by a predetermined angle. The cam gear 210 is still rotated in the direction of arrow A, and when the slide chassis 120 is at the recording / reproducing position, the rear arc edge 272 of the cam hole 270 of the slide chassis 120 is moved by the drive locus 211 of the cam gear 210. Therefore, the drive pin 211 is moved to the left end portion of the cam hole 270 along the rear arc edge 272 of the cam hole 270 (see FIG. 12). A member other than the guides 160 and 160 is moved to a predetermined position or brought into a predetermined state, and preparation for a recording / reproducing operation is made.
[0043]
As the slide chassis 120 moves, the cassette holder 140 moves with the slide chassis 120 by moving with respect to the moving frame 130.
[0044]
Then, recording or reproduction with respect to the magnetic tape 30 is performed.
[0045]
When the recording or reproduction with respect to the magnetic tape 30 is completed, the motor 220 is rotated in the opposite direction to the previous one, whereby the cam gear 210 is rotated clockwise as viewed from above, that is, in the direction of arrow C in the figure. The drive pin 211 initially moves to the right along the rear arc edge 272 of the cam hole 270, but eventually enters the pressed portion 273 and presses the front edge of the pressed portion 273 forward. As a result, the slide chassis 120 starts to move forward, that is, toward the standby position in the direction of arrow D in the figure.
[0046]
When the slide chassis 120 moves forward, the racks 260, 260 provided on the slide chassis 120 rotate the synchronous gears 200, 200, so that the drive arms 190, 190 rotate in predetermined directions, respectively, and the tape is pulled out. The guides 160 and 160 move forward, that is, into the mouse portion 21 of the tape cassette 10.
[0047]
11, when the slide chassis 120 reaches the front end of the movement range, that is, the standby position, the tape pull-out guides 160 and 160 reach the front end of the movement range and enter the mouse portion 21 of the tape cassette 10. The excess magnetic tape 30 is wound around one tape reel 40.
[0048]
Even when the slide chassis 120 reaches the standby position, the cam gear 210 continues to rotate in the direction of arrow C, and the drive pin 211 provided on the cam gear 210 extends along the front arc edge 271 of the cam hole 270 provided on the slide chassis 120. Then, the cam member moves to the left end of the cam hole 270, and during this time, the cam gear 210 returns a predetermined member to a predetermined position or a predetermined state.
[0049]
Next, the moving frame 130 rotates upward, and the cassette holder 140 is positioned at the eject position. Therefore, the tape cassette 10 is pulled out from the cassette holder 140.
[0050]
As described above, the tape cassette 10 is taken out from the recording / reproducing apparatus 100 through the recording / reproducing operation with respect to the magnetic tape 30 after the tape cassette 10 is mounted on the recording / reproducing apparatus 100.
[0051]
In the recording / reproducing apparatus described above, since the synchronous gears 200 and 200 are rotated by the racks 260 and 260 provided on the slide chassis 120 that is moved by driving the motor 220, the tape drawing guides 160 and 160 are moved. The number of members required for the movement of the slide chassis 120 and the movement of the tape drawing guides 160 and 160 is small, the number of parts is reduced, which contributes to cost reduction and simplification of the mechanism, and also contributes to miniaturization. .
[0052]
Further, since the synchronization gears 160 and 160 can be arranged apart from each other, the selection range of the arrangement positions of the synchronization gears 160 and 160 is expanded, and thus the degree of freedom in design is increased. Can be miniaturized.
[0053]
It should be noted that the shapes and structures of the respective parts shown in the above-described embodiments are merely examples of implementations in carrying out the present invention, and these limit the technical scope of the present invention. It should not be interpreted as.
[0054]
【The invention's effect】
As is apparent from the above description, the recording or reproducing apparatus of the present invention is a recording or reproducing apparatus for performing recording and / or reproduction on a recording medium cassette in which a tape-shaped recording medium is housed in a cassette shell. A recording / reproducing mechanism having a rotating head drum for recording and / or reproducing on a tape-like recording medium; and holding a recording medium cassette and approaching the recording / reproducing mechanism to perform recording and / or reproduction on the tape-like recording medium. A cassette holding member that moves between a recording / reproducing position to be performed and a standby position separated from the recording / reproducing mechanism, and a pair of two members that are moved in synchronism with each other and draw out the tape-like recording medium from the cassette shell and wind it around the rotating head drum. The tape pull-out guide and the tape pull-out guide at the tip are connected to each other. A pair of drive arms to be moved, and a pair of synchronization gears which are provided at the base end portion of the drive arm so as to be rotatable and spaced apart from each other in the recording / reproducing mechanism, and rotate the drive arm by a rotation operation. A pair of racks provided on the cassette holding member and respectively meshed with the synchronous gear, wherein a substantially rectangular protruding portion is formed at a central portion in the longitudinal direction of the cassette holding member. The above two pairs of racks are formed on both side edges thereof, and a cam hole for moving the slide chassis is formed at the center thereof, and the cassette holding member holds the recording medium cassette from the standby position to the recording / reproducing position. While the rack is moving, the rack rotates the synchronous gear to rotate the drive arm to move the tape withdrawal guide, and the tape withdrawal guide is moved to the tape-shaped recording medium. The pull from the cassette shell, characterized in that wound on the rotary head drum.
[0055]
Therefore, the recording or reproducing apparatus according to the present invention does not require the linear skate arm and the tape guide slider which are conventionally required, and the number of parts is reduced, the mechanism is simplified, and it can be manufactured at a low cost. In addition, since the base end portions that are the pivot points of the drive arm for moving the tape drawing guide can be arranged apart from each other, the degree of freedom in design is increased, and the apparatus can be downsized. .
[Brief description of the drawings]
FIG. 1 shows an example of a tape cassette used in the recording or reproducing apparatus of the present invention together with FIGS. 2 and 3, and this figure is a perspective view.
FIG. 2 is a perspective view showing a state where a front lid and a back lid are in an open position.
3 is a perspective view of the state of FIG. 2 as viewed from the lower surface side. FIG.
FIG. 4 shows an embodiment of the recording or reproducing apparatus of the present invention together with FIGS. 5 to 12, and is a schematic perspective view showing a state where the cassette holder is in the eject position.
FIG. 5 is a schematic perspective view showing a state in which a cassette holder is in a lowered position and a cassette holding member is in a standby position.
FIG. 6 is a schematic perspective view showing a state where a cassette holding member is in a recording / reproducing position.
FIG. 7 is an enlarged perspective view showing a rotary head drum, a tape drawing guide, and members in the vicinity thereof.
FIG. 8 is a plan view of a slide chassis.
FIG. 9 is a schematic perspective view showing a state where the tape cassette is inserted into the set holder at the eject position.
FIG. 10 is a schematic plan view showing a state where the cassette holding member is in a standby position.
FIG. 11 is a schematic plan view showing a state where the cassette holding member is at an intermediate position between the standby position and the recording / reproducing position.
FIG. 12 is a schematic plan view showing a state where the cassette holding member is at a recording / reproducing position.
FIG. 13 shows an example of a conventional recording / reproducing apparatus together with FIG. 14, and is a schematic plan view.
FIG. 14 is a plan view of a main part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Tape cassette (recording medium cassette), 20 ... Cassette shell, 30 ... Magnetic tape (tape-like recording medium), 100 ... Recording / reproducing apparatus (recording or reproducing apparatus), 120 ... Slide chassis, 124 ... Projection part, 150 ... Rotating head drum 160 ... Tape drawing guide 170 ... Recording / reproducing mechanism 190 ... Drive arm 200 ... Synchronous gear 250 ... Cassette holding member 260 ... Rack 270 ... Cam hole

Claims (1)

A recording or reproducing apparatus for recording and / or reproducing with respect to a recording medium cassette in which a tape-like recording medium is accommodated in a cassette shell,
A recording / reproducing mechanism that includes a rotating head drum and performs recording and / or reproduction on a tape-like recording medium;
A cassette holding member that holds a recording medium cassette and moves between a recording / reproducing position that approaches the recording / reproducing mechanism and performs recording and / or reproducing with respect to the tape-like recording medium, and a standby position separated from the recording / reproducing mechanism. ,
A pair of two tape pull-out guides that are moved in synchronization with each other and draw the tape-shaped recording medium from the cassette shell and wind it around the rotary head drum;
A pair of drive arms, each of which is connected to the leading end portion of the tape drawing guide and moves the tape drawing guide by a rotating operation;
A pair of synchronous gears provided at the base end of the drive arm so as to be spaced apart from each other and rotatable at the recording / reproducing mechanism and rotating the drive arm by a rotation operation;
A pair of racks provided on the cassette holding member and respectively meshed with the synchronous gear;
A projecting portion having a substantially rectangular shape is formed at a central portion in the longitudinal direction of the cassette holding member, and the projecting portion is formed with the two pairs of racks on both side edges thereof, and a slide chassis moving member at the central portion. A cam hole is formed,
While the cassette holding member holds the recording medium cassette and moves from the standby position to the recording / reproducing position, the rack rotates the synchronous gear to rotate the drive arm to move the tape pull-out guide. A recording or reproducing apparatus, wherein the guide pulls out the tape-shaped recording medium from the cassette shell and winds it around the rotating head drum.

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