JPS58185072A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent a shift of position for a magnetic tape after loading, by adding a locking function to the turning mechanism of a loading mechanism to prevent that a turning arm goes back by a degree larger than a prescribed angle when the film loading is over. CONSTITUTION:When a manual disk 106 is rotated counterclockwise, a switching gear 141 interlocking a gear 103 of a plate rotor 102 which rotates in a body with the disk 106 is rotated clockwise. A pin 142 is connected to a pin 157 of a turning arm 143 with a tensile coil spring 161. Then the loading arm 143 is turned in the clockwise loading direction. When the loading is over, the counterclockwise force is applied to an arm 144 of the arm 143. Even under such conditions, the gear 141 never rotates counterclockwise since it is locked.

Description

[Detailed description of the invention]

The present invention relates to a novel cassette adapter. For more information,
A tape cassette (hereinafter referred to as "small tape cassette") smaller than the tape cassette (hereinafter referred to as "normal size tape cassette") currently commonly used for video tape recorders or videotape players (hereinafter referred to as rVTRJ). Regarding cassette adapters for use with normal-size tape cassettes (VTRs, etc.), in particular, a small tape cassette is attached to the cassette adapter, and the magnetic tape is placed in the same initial position as in the normal-size tape cassette. After loading f
The present invention aims to provide a YJ1 standard cassette adapter which prevents the magnetic tape from being misplaced due to unforeseen circumstances. VTRs have become surprisingly popular compared to the beginning. With this widespread use, VTRs have become extremely familiar, and their uses have expanded, and the desire for more convenience and ease has led to demands for smaller devices, and eventually smaller tape cassettes. It's increasing. Various attempts have been made to meet the demand for miniaturization of tape cassettes, but once small tape cassettes became popular, one
There is a problem that the huge number of VTRs for no-pull size tape cassettes are becoming useless. In this case, the adapter method was discovered, in which a cassette adapter having approximately the same appearance and size as a no-pull size tape cassette is prepared, and a small tape cassette is attached to the cassette adapter. 7. Pull out the magnetic tape from the IA small tape cassette and place it in the normal size tape cassette. The purpose is to attach a cassette adapter to a VTR so that a small tape cassette can be used with a VTR designed for normal-sized chip cassettes. If a magnetic tape that has been set in the initial position is moved from its normal position due to a slight impact, for example, it may become attached to the magnetic tape of the VTR when it is used in a VTR. Therefore, the present invention is designed to prevent the position of the magnetic tape from shifting due to immediate circumstances after loading the magnetic tape in the same position as the initial position in the normal size tape cassette in the cassette adapter. The purpose of the present invention is to provide a new cassette adapter that prevents storage of the magnetic tape from the tape cassette, and includes a loading mechanism that pulls out the magnetic tape from the tape cassette, an unloading mechanism that rewinds the magnetic tape pulled out from the tape cassette into a tape force center. The loading mechanism includes a first rotating arm having a guide pin at the swinging end, and a kite pin at the same swinging end and rotating in conjunction with the first rotating arm. It consists of a second rotating arm that is moved, and a rotating mechanism that rotates the first rotating arm, and the rotating mechanism is configured to rotate the first rotating arm or a predetermined angle tool when the loading is completed. The cassette adapter according to the present invention will be described in detail below according to the illustrated embodiment. An example of a small tape cassette/attachment suitable for attaching to an adapter will be explained with reference to Figs. Two tape reels 6 and 7 each having both ends of a magnetic tape 5 wound thereon are disposed inside a cassette case 4, and a cover 8 is provided on the front surface of the cassette case 4, which is a tape drawer section that can be opened and closed. covered with. Is the tape force set in Figure 3 as shown in L? L to L half 2
FIG. 8 is a plan view showing a state with the cover 8 and the cover 8 removed. One side 6 of the tape reels 6 and 7 rotatably arranged in the cassette case 4 is a tape supply reel (hereinafter referred to as "S reel").
Say. ), and the other 7 becomes a take-up reel (hereinafter referred to as "T reel"). The magnetic tape 5 pulled out from the S reel 6 is led out of the cassette case 4 through an opening 9 formed with a number on the front side of the cassette case 4, and then closes to the other side edge of the front side of the cassette case 4. It is introduced into the cassette case 4 through the opening lO formed at the side A<1 position, and is wound onto the T reel 7. Further, the magnetic tape 5 has each opening 9. Other stories of lO

The guide bins 11 and 12 are placed along the smooth outer peripheral surface of the guide bins 11 and 12. 13.14 is the tape reel 6 inside the cassette case 4
．． 7 and the openings 9 and 10, so that the magnetic tape 5 does not come into contact with the magnetic tape 5 during use, for example, when the magnetic tape 5 is stretched. Reference numeral 15 denotes a contact piece provided on the S reel side, which is made of an elastic plastic sheet such as polyester, and is stuck and fixed to the inner wall of the cassette case 4 at the base end i; It is in elastic contact with the outer peripheral surface of 13. The surface of the tip of the contact piece 15 that comes into contact with the pin 13 is coated with a coating that has good slip resistance, such as laminating a thin film sheet of Teflon (trade name). The proximal end of the pin 16 is fixed to the cassette case 4 and the distal end is brought into elastic contact with the outer circumferential surface of the pin 14 by the contact J1 similar to that of the pin 15. Therefore, when the magnetic tape 5 is not tensioned, such as when not in use, the magnetic tape 5 is held between the pin 13 and the tip of the contact piece 15, and between the pin 14 and the tip of the contact piece 15. , the magnetic tape 5 is prevented from being pulled out of the cassette case 4 for . Reference numerals 17 and 18 are approximately V-shaped reel stoppers, and pins 19.
20 so as to be rotatable. The tip of the reel side arm piece 21 of the leak crest collar 17 disposed on the S reel 6 side is a locking pawl 22 bent slightly outward. Also,
An engagement protrusion 24 is formed at the tip of the force arm piece 23 of this reel strike 7 pa 17. The tip of the reel-side arm piece 25 of the reel stopper 18 disposed on the T-reel 7 side is a locking pawl 26 bent slightly outward. and,
The tip of the anti-reel side arm J4-27 of the reel stopper 18 is located closer to the rotation fulcrum of the reel stopper 17 than the engagement protrusion 24 of the reel stopper 17 is. 28 is a spring, whose central part is supported by a pin 29 provided on the cassette case 4, and whose two free ends are slightly closer to the rotation fulcrum than the tip of the arm piece 21.25 of the reel stopper 17.18. The engaging pawl 22.26 of the reel stopper 17.18 elastically contacts the integrally formed protrusion 30.31.
The tape reel 6.7 is adapted to be brought into elastic contact with the circumferential surface of the lower flange 32.33 of the tape reel 6.7. Notches 34, 34, 35, 35, O and φ are formed on the outer circumferential surface of the lower flask 32.33 of the tape reel 6.7, and the reel stopper 17.18 is engaged with the cutouts 34, 34, 35, 35, O. Stop claw 22.
26 is the notch 34.34 of tape reel 6.7,...
35, 35, . . ., the tape reel 6.7 is brought into a 1-long state, thereby preventing the tape reel 6.7 from rotating idly when not in use. In the case of the user 114111t, when the tip of the arm piece 23 of the reel stopper 17 is pushed down toward the 312th page, each reel stopper 17, 18 rotates toward the warp side, and each locking claw 22.26 is notch 34.34
,・Auto・,35.35,・・Since it is out of [phase], it is cheaply J and the lock state of 6, 7) is released. Reference numeral 36 denotes a cover ()-/pa, and the )J55 position is supported by a pin 37 provided on the cassette case 4 so as to be movable together. A protrusion 38 is formed on one side of the free end of the cover stopper 36.
39 are integrally formed, the tips of each of which protrude outside the cassette case 4, and the protrusion 38 is engaged with a hole 40 formed in the side surface of the cover 8. Also,
A protrusion 41 is formed in the middle of the cover stopper 36 , and the other end of a spring 42 supported by the pin 37 comes into elastic contact with this protrusion 41 , causing the protrusions 38 and 39 to rotate in the direction of protruding from the cassette case 4 . The cover stopper 36 is biased to move. However, as shown in the 1st IA, Banko, Power - Stoppa 3
When the protrusions 38 of 6 are engaged with the holes 40 of the cover 8, the cover 8 is prevented from opening as shown in FIG. When the tape cassette l is used, if the cover stopper 36 is rotated against the elastic force of the spring 42, the protrusion 38 is removed from the hole 40 of the cover 8, and the cover 8 is opened as shown in FIG. It will be in a state where it can be opened. Reference numeral 43 denotes a tape drawer recess formed between opening 9 and lO on the front surface of the cassette case and having a generally shallow V-shape in plan view. Therefore, the tape 5 is fed through a path that closes the front surface of the tape draw-out recess 43. 44 is a tape position regulating piece made of an elastic synthetic resin sheet, such as a polyester film, and formed into a T-shape.
The central piece 45 is attached and held on the upper surface of the front end of the -F half 2, and the part 4 extends left and right from the tip of the t# mounting piece 45.
Reference numeral 6.46 is the front opening of the tape drawer recess 43, and is arranged so as to be spaced apart from the tape path when not in use and parallel to the tape path. In addition, 47
．． 47 is a material with good stickability, such as Teflon (trade name)
A thin film sheet is attached to sandwich the tips of the contact pieces 46, 46 in a sandwich shape. This tape position regulating piece 44 prevents the tape 5 from penetrating deep into the four tape drawer parts 43 when the tape becomes slack. Guide grooves 48 and 49 are formed on both sides of the cassette case 4, starting from the bottom of the cassette case 4 and ending at the other end reaching the top. 50 is an arc-shaped ! formed on the bottom of the cassette case 4! ,
'J-notch part is formed to be continuous with the side surface on the side where the T reel 7 is arranged. Reference numeral 51 denotes a long hole formed in the bottom plate of the cassette case 4, and is formed at a location approximately corresponding to the intersection of the anti-reel arm pieces 23 and 27 of the reel stopper 17, 18. 52 and 53 are notches, of which 52 is formed in the bottom plate of the cassette case 4, and the formation position is a) 2 position corresponding to the sliding tip 54 of the cover stopper 36, and the bottom /\ - Continuous to the front end of the flap 3. The notch 53 is formed in the cover 8, and its formation position corresponds to the notch 52 and is connected to the lower end of the cover 8. Next, embodiments of the cassette attacher according to the present invention will be described. 55 is an adapter case, which has a lower half 56 and a lower half 57.
In this adapter case 55, various elements described below are arranged in combination. An opening 58 for inserting a small tape cassette is formed on the first side of the first half 56 at a position offset to one side. Partition walls 59 and 60 are connected to the left and right edges of the opening 58, and guide ridges 61 and 62 extending downward are formed on the side surfaces of the partition walls 59 and 60 on the side of the opening 58.
are integrally formed. 63 is the tape cassette insertion amount 1 of the adapter case 55
158 is a double body that opens and closes, and has a concave 1"58 on its negative side edge.
It is hingedly connected to one side edge of the . 64 is 4 days off and 6 days off
-3 is an elastic arm piece formed adjacent to the finger rest notch 64 at the swing end of the finger rest, and the elastic arm piece 65 has an engaging claw at its tip 66 is formed. Reference numeral 67 denotes an elastic receiving piece disposed on the side edge of the opening 58, and the elastic rubber 67 has a water receiving piece 68 that is engaged with the engaging claws 66 of the four bodies 63. However, in 2
When the body 63 is rotated to close the opening 58 on the adapter case 55, the arm piece 65 and the receiving piece 67 are bent by their elasticity, and the engaging claw 66 is engaged with the receiving hole 68. As a result, the opening 58 is kept closed by the lid 63. When opening the fitting 63 in the closed state, bend the elastic receiving piece 67 on the adapter case 55 side with your fingernail or the like to release the engagement between the receiving hole 68 and the engaging claw 66. , put another finger on the notch 64 of the lid 63 and close the lid 63.
When the lid body 63 is pulled up, the lid body 63 is rotated and the opening 58 is opened. Reference numeral 69 denotes a trapezoidal notch formed on the front edge of the lower half 57 of the adapter case 55, into which a loading pin for a VTR or the like is inserted. 70 is upper half 56
This is a trapezoidal notch formed on the front edge of the notch 7.
0 allows you to check whether the magnetic tape of the small tape cassette has been correctly loaded into the cassette/double adapter (in the initial state) just by looking at it from above. The cassette adapter 71 is shown in FIGS. 7 to 22.
The details of the internal structure of is explained below. Reference numeral 72 denotes an annular presser ring, which is located at the periphery of an insertion hole 73 formed near one side edge of the lower half 57. The inner edge 74 of the presser ring 72 is bent into a crank shape, and an annular ring 1475 is formed between the inner edge 74 and the opening edge of the insertion hole 73. 76
is an annular spacer whose peripheral edge is connected to the annular groove 7.
It is inserted and held in 5. An annular protrusion 77 is formed on the upper surface of the inner peripheral edge of the spacer 76 . The outer diameter of the spacer 76 is made smaller than the diameter of the annular groove 75, and its thickness is smaller than the width 1 of the annular groove 75 (dimension in the high y direction at 71). It is possible to make some movements vertically and in the direction of lateral force. Reference numeral 78 denotes a blade rotatably supported by the lower half 57 at a position spaced laterally from the insertion hole 73 by a predetermined distance. The impeller 78 includes a plurality of protrusions 79, 79, 79 integrally formed on the outer peripheral surface of the cylindrical body along the axial direction, and a flange 80 integrally formed on the lower end of the cylindrical body. The outer peripheral surface of the flange 80 is provided with gear teeth 81.81. -... is formed/formed. 82 is the 9 support pins installed on the lower half 57. 11, the restraining body of the blade 78 is held on the support pin 82 via bearings 83, 83 in an externally fitted manner, whereby the blade 1+78 is rotatably supported by the lower half 57. 84
is a stopper fixed to the upper end of the spindle pin 82, and
78 from coming off from the support shaft pin 82. A drive gear 85 is rotatably supported by a bracket 86 fixed to the lower half 57. This drive gear 85 includes a cylindrical portion 87 in which a driving blade (not shown) protruding from a reel stand of a VTR or the like is engaged from a lower blade, and a flange 88 provided at the lower end of the cylindrical portion 87. The outer peripheral surface of the flange 88 has gear teeth 89, 89,
... is formed. Reference numeral 90 denotes a transmission gear rotatably supported by the lower half 57, gear teeth 91.91 formed on the outer circumferential surface of the transmission gear, and .e. representing the gear tM81.81e of the blade +f78 and the gear tooth of the drive gear 85. 89.89. ..., and therefore the rotation of the drive gear 85 is caused by the transmission gear 9.
0 to vane +78. When the small tape cassette 1 is attached to the cassette adapter 71, the relationship between the tape reel 6.7 of the small tape cassette 1 and the spacer 76 and impeller 78 of the cassette adapter 71 becomes as shown in FIG. 1O. . That is, the S reel 6 has its lower flange 32 attached to the annular protrusion 771- of the spacer 76 of the cassette adapter 71.
As a result, the lower flange 32 is slightly lifted from the lower half 3 of the tape cassette 1, so that the lower flange 32 is in an L-shaped state. An engagement hole 92 formed at the axial center of the S reel 6 and opening toward the closed end is exposed to the outside of the cassette adapter 1 through the center hole of the spacer 76 . Therefore, when the cassette adapter 71 or VTR'4 is attached, a rewinding drive shaft (not shown) protruding from the reel stand of the VTR etc. is inserted into the engagement hole 9 of the S reel 6 from the bottom side of the cassette adapter 1.
2. The blade +78 of the cassette adapter 71 is inserted into and engaged with the engagement hole 93 formed in the axial center of the T reel 7 and opened at the lower end. At this time, the lower flange 33 of the T reel 7 is connected to the flange 80- of the blade +78.
As a result, the seven lunges 80 are placed in a state where they are suspended above the lower half 3 of the tape cassette L. Reference numeral 94 denotes a swing plate rotatably supported by the half 57 of the cassette adapter 71. The swing plate 94
It has an abbreviated shape with one arm elongated, and is rotatably supported at its bent position. 95 is lower half 5
A support pin 95 is provided upright at the support pin 95, and an insertion hole 96 formed in a bent portion of the swing plate 94 is inserted through the support pin 95, thereby forming a rotation fulcrum. Swing plate 94
A protrusion 98 is formed at the tip of the longer arm 97. Reference numeral 99 denotes a stopper pin installed vertically on the lower bar 57, which collides with the side surface of the tip of the arm 97 of the swing plate 94 on the side opposite to the drive gear 85, thereby setting the rotation position of the arm 97 toward the side opposite to the drive gear 85. It is supported by the central part of 101. Then, the end of the bay 101 engages with a protrusion 98 formed at the tip of the arm 97 of the swing plate 94,
The other end of the spring 101 engages with the inner wall surface of the lower l\-f 57,
As a result, the arm 97 of the swing plate 94 is always pushed against the stomper pin 994. Reference numeral 102 denotes a plate rotating body, which is formed integrally with a restraining part 104 having a gear 103 formed at its lower end and a square plate part 105 provided at one end of the cylindrical part 104, and the support pin 95 so as to be rotatable. A manual disk 106 is connected to one end of the plate rotating body 102 so as to rotate integrally with the plate rotating body 102. A disk 107 smaller in diameter than the outer diameter of the disk 106 is integrally formed on the t surface of a part of the manual disk 106, and gear teeth 108 are formed on the outer peripheral surface of the disk 107.
．． 10g, ...O is formed. 1 yen fi again
A rectangular recess 109 is formed in the center of 107, and. An insertion hole 110 is formed through the center of the stationary disk to6. Further, on the upper surface of the manual disc 106, four circular parts 111 are formed at the center thereof, and four arcuate hook parts 112 are formed at one peripheral edge. Therefore, a rectangular recess 109 formed on the lower surface of the manual disc 106
The square plate portion 105 of the plate rotating body 102 is fitted into the square plate portion 105 of the plate rotating body 102. As a result, when the five-manual disc 106 rotates, the plate rotating body 102 also rotates due to the body weight. Then, the part of the support pin 95 protruding from the end of the plate rotating body 102 is inserted into the insertion hole 110 of the manual disc 106, and the F end of the support pin 95 is inserted into the insertion hole 110 of the manual disc 106.
It protrudes into a circular quadrature formed on the upper surface of the . Furthermore, a support pin 9 protrudes into this circular four part ill.
The E-ring 114 is engaged with the groove l.13 formed on the upper end of the manual disc 106.5. The support pins 95 of the plate rotating body 102 and the swing plate 94 are also removed. 115 is manual disc 10611
This is a camp body fitted into a circular four part 111 having a diameter of Y10. 116 is a pin provided at the tip of the shorter arm l17 of the swing plate 94). 118 is the pin 1
This gear is rotatably supported by the gear 11.
Is there a high 1 between 8 and the arm t t7h plane? A friction ring 119 made of a material having a coefficient of friction is interposed. 1 of the gear 118 is attached to the pin 116. A washer 120, a coil spring 121, and a washer 122 are fitted in this order, and an E-ring 12 is fitted into a groove 123 at the tip of the pin 116.
4 is engaged to prevent each member L externally fitted onto the pin 116 from coming off. Since the coil spring 121 is compressed between the washers 120 and 122, the repulsive force of the coil spring 121 acts to press the gear 118 against the arm 1171 via the friction ring 119. Then, in a state where the gear 118 is rotatably supported by the counter pin 116, the gear teeth on the periphery of the gear 118 mesh with the gear teeth of the gear 103 of the plate rotating body 102. Therefore. When the push-button rotating body 102 is rotated, the gear 10
The gear 118 meshing with the gear 3 is rotated. At the same time, since a friction ring 119 is interposed between the gear 118 and the surface of the arm 1171 of the swing plate 94, a rotational force acts on the tip of the arm 117. Therefore, plate rotating body 1
02 is rotated, the drive plate 94 is also rotated. That is, when the plate rotating body 102 is rotated clockwise, the tip of the arm 97 of the rear plate L/- plate 94 is rotated in a direction approaching the force of the drive gear 85, and conversely, the plate rotating body 102 is rotated in the clockwise direction. When the moving body 102 is rotated counterclockwise, the tip of the arm 97 of the swing plate 94 is rotated in a direction away from the drive gear 85. When the swing plate 94 reaches its rotation limit in each direction of rotation, it slips between the gear 103 and the friction ring 119, and the gear 103 rotates. yen a10
6 can continue rotating. A cylindrical support m 1 25 is integrally provided on the upper surface of the distal end of the longer arm 97 of the pulsation plate 94 . 12
Reference numeral 6 denotes a winding gear, which is supported by the rotating gear 1 on the C side of the tip of the ifj arm 97. A shaft 127 protruding toward the rear is fixed to the center of the winding gear 126, and the shaft 127 is inserted into the support tube 125 from the rear. Reference numeral 128 denotes a connecting body having a substantially cap-shaped shape, and its crest portion 129 is rotatably supported by a Y-shaped spoon which is fitted onto the outside of the support tube 125. In addition, there is a protrusion 13 in the center of the hill portion 129.
0 or integrally formed. The shaft 127 fixed at 1-11 on the winding gear 126 is connected to the crest 12 of the connecting body 128.
9 and extends in the L direction, and the axis 127
and the connecting body 128 are connected to each other by a key means or the like so as to rotate under the weight of the user. 131 is a substantially disk-shaped receptor;
A recess 132 formed in the center of the surface is connected to the connecting body 128.
- The receiving body 131 is fitted with the protrusion 130 formed on the top part, whereby the receiving body 131 rotates integrally with the connecting body 1.28, and the concave part 132 and the protrusion 130 slide in the direction of the axial force of the shaft 127. It is possible to move. Reference numeral 133 denotes a compression coil spring fitted onto the crest 129 of the connecting body 128, and a flange 134 formed at the lower end of the connecting body 128.
and the receiver 131. Note that the shaft 12
7 also passes through the center of the receptor 131 and extends to the L force. Reference numeral 135 denotes a transmission gear, and a flange 136 is formed at the lower end of the transmission gear, and a four part 137 is formed at the center of the upper surface of the gear part. The shaft 127 passes through the transmission gear 135 so that its lower end is within the recess 137 of the transmission gear 135, and a stopper 138 is fixed to the lower end of the shaft 127. Between the stopper 138 and the inner bottom surface of the recess 137 and between the lower surface of the flange 136 of the transmission gear 135 and the surface of the receiver 1311, there are separately friction plates 139 and 140 made of a high friction material such as a felt plate. be forced to intervene. The gear teeth formed on the peripheral surface of the transmission gear 135 are the gear teeth 108 and 108 of the manual disc 106.
,... are intertwined. As a result, when the f-motive force fi 106 is rotated, the transmission gear 135 meshed with the gear teeth 108, lO8, . . . is rotated. 1-5, the flange 134 of the connecting body 128
The repulsive force of the coil spring 133 compressed between the receiving body 131 and the receiving body 131 presses the receiving body 131 against the flange 136 of the transmission gear 135 via the closing friction 1140. The full force of the coil spring 133 also acts to press the transmission gear 135 and the stopper 138 via the friction plate 139. Therefore, when the transmission gear 135 is rotated, the coupling body 128 and the shaft 127 are rotated through the frictional force therebetween, and the winding gear 126, which is rotated together with these, is also rotated. be done. Then, as described above, when the manual disk 106 rotates in the IP+!1 rotation direction, the swing plate 94 is rotated so that its arm 97 approaches the drive gear 85 and the take-up gear 128. The gear teeth of the drive gear 85 will mesh with the gear teeth 89 89.・Φ.
6 continues to be rotated, the winding gear 126 appears as if it had been straightened.
is rotated, and the drive gear 85 is accordingly rotated in the winding direction. Reference numeral 141 denotes an opening/closing gear rotatably supported by the door half 57, and is meshed with the gear 103 of the plate rotating body 102. Further, a pin 142 is provided protruding from a position near the periphery of the opening/closing gear 141. Reference numeral 143 denotes a rotating arm for loading, which has a square shape and an abbreviated letter shape, and a pin 145 is erected at the tip of the long force arm 144 toward the L direction.
A roller 147 is rotatably supported via a roller 146. The short force arm 148 of the rotating arm 143 is formed with a wall 149 extending from the side edge near the long arm 144 and a bottom portion 150 bent at a right angle from the edge of the wall 149. , whereby the cross-sectional shape is formed into a U-shape. Also, the long arm 1 mentioned above
A hooking piece 151 is formed by bending at the base end of 44. The rotating arm 143 as described above is rotatably supported by the half 57 at the tip of the shorter arm 148 by a support pin 152 mounted on the lower bar 257. 15
3 has a ring-shaped part 154 in the center/1. The ring-shaped portion 154 is fitted and supported by the support pin 1524j, and the force arm 155a is attached to the wall 14 formed on the side edge of the short arm 148.
9 is engaged. The external force arm 155b is engaged with a hook piece 151 formed at the base end of the long arm 144. Note that a notch 156 is formed on the outer side surface of the short arm 148 of the rotating arm 143, and the other 111i! l 55 b is located so as to cross this nine cutout 156. Furthermore, a pin 157 is provided upright at a substantially connecting portion between the long arm 144 of the rotating arm 143 and the narrow arm 148. Reference numeral 158 denotes a connecting plate, which has an insertion hole 159 at one end and a long hole 16 along the longitudinal direction of the plate 158 at the other end.
0 is formed. By inserting the pin 142 of the opening/closing gear 141 into the insertion hole 159 of the connecting plate 1-158, one end of the connecting plate 158 is rotatably connected to the opening/closing gear 141. In addition, the connecting plate 15
Pin 1 of the rotating arm 143 is inserted into the elongated hole 160 at the other end of 8.
57. 161 is a tension coil spring. One end of the tension coil spring 161 is connected to the pin 1 of the opening/closing gear 141.
42, and the other end is hooked to the pin 157 of the loading rotating arm 143. In this way, the opening/closing gear 141 and the rotating arm 143 are connected by the connecting plate 158 and the tension coil spring 161 at the W pins 142 and 157. Thus, the loading rotating arm 143 rotates in a linear manner as the opening/closing gear 141 rotates. That is, the state shown in FIG. 8 is the initial state. When the manual disc 106 is rotated in the counterclockwise direction from the state shown in FIG. It is rotated. Then, the position of the pin 142 of the opening/closing gear 141 moves approximately in the direction shown in FIG.
Since the tension coil spring 161 connects the pin 157 with the pin 157, the position of the pin 157 is pulled, thereby causing the loading rotation A L, l 4
3 is rotated clockwise. Then, through the state shown in FIG. εrs16, If, that is, until the arm 144 collides with the stopper pin 162. ε+', l It is rotated until it reaches the state shown in 71'4. still. The rotation arm 1.143 has the opening/closing gear 141 shown in Fig. 17.
Before being rotated to the I\y leaning state, the state E shown in Figure 17 is reached.
・Then, the pin 142 of the opening/closing gear 141 moves beyond the extension of the line connecting the rotation center of the gear 141 and the pin 157, and the distance between the pins 142 and 157 approaches each other. , between these two is a tension coil spring 161.
Since the first rotation arm 143 is connected to the first
7 There is no way to return to the box from the state shown in Figure 7. And the first
Figure 7! At and -, the side surface of one end of the connecting plate 158 abuts against the outer peripheral surface of the plate rotating body 102, thereby preventing further rotation of the opening/closing gear 14.1 in the clockwise direction Wξ. In the state shown in FIG.
57 is located approximately in the middle of the long hole 160 of the connecting plate 158, so when a counterclockwise force is suddenly applied to the tip of the long arm 144 of the rotating arm 143, the tensile force of the tension coil spring 161 is The rotating arm 143 is rotated until the pin 157 abuts against the distal end of the elongated hole 160.
can rotate. This is sudden to the tape, il
This helps prevent the tape from breaking when a large tensile force is applied. At the same time, if a counterclockwise force is applied to the arm 144 of the first rotation arm 143, the pin 142 of the opening/closing gear 141
It is located beyond the extension of the line connecting the pin 157 and the center of rotation of the gear 141 in the clockwise direction, and collides with the connecting play 1158 or the plate rotating body 102 on the clockwise side. It's like it's locked. The opening/closing gear 141 never rotates counterclockwise, and there is no chance that the tape that has been pulled out to the b-ding position 1d will go out of order at some point. /4, 1 manual disk 10 from the shape m1 shown in FIG.
6 in the clockwise direction, the opening/closing gear 141 is rotated in the clockwise direction, and its pin 142 presses the connection plate 158. Then, the pin 157 of the fifth rotation arm 143 or the gear 141 of the hole 160 of the connecting plate 158
abutting the side edges and therefore the pin 157 or the connecting plate 1
58, and as a result, the rotating arm 143 is rotated in the counterclockwise direction by 1.1 rotations, resulting in the state shown in FIG. Note that there is an arc-shaped recess 163 on the bottom of the opening/closing gear 141.
is formed, and this arcuate recess 163 forms a half 57.
The opening/closing gear 141 is slidably engaged with a pin 164 protruding from the opening/closing gear 141, and when one end of the four arcuate portions 163 collides with the pin 164, the counterclockwise rotation of the opening/closing gear 141 is stopped. . A roller 165 is rotatably supported by a pin 167 erected at the end of the bracket 166 fixed to the lower half 57. 16B is a first connection link. The first connecting link 168 has a square shape and an abbreviated shape, and the long arm 1
A protrusion 170 is formed at the tip of 69. In addition, the tip of the short force arm 171 is the support pin 15 (which serves as the rotation axis of the loading rotation arm 143).
2, it is supported by rotation r1. A hook piece 172 is formed on the side edge corresponding to the base end of the long arm 169 of the connecting link 168, and the hook piece 172 is located at a position corresponding to the notch 156 of the rotating arm 143. has been done. Therefore, when the rotating arm 143 is rotated clockwise from the state shown in FIG. 8 to a predetermined position (the position shown in FIG. 16), the arm 155b of the spring 153 attached to the rotating arm 143 is connected. It comes into contact with and pushes the hook piece 172 of the link 168. Therefore. When the rotating arm 143 further rotates from the position shown in FIG. 16, the hook piece 172 is pushed by the arm 155b of the spring 153, and the connecting link 168 is rotated clockwise. 143 or in Fig. 17, just before reaching the position 1<, does the connecting link 168 reach its rotation limit 1111 at the intersection with each link '9, which will be described later? 153, the connecting link 168 reaches its rotation limit (
FIG. 18(A) shows the rotating arm 143 from the small pi-
Until the arm 155b of the spring 153 is bent until it reaches the final clockwise position (the state shown in FIG. 18(B)), the rotation arm 143 and the connecting link 16 are bent.
8 is absorbed. In addition, in the state shown in Figure 18 (B) of the 17th domestic product, the connecting link 1
Since d force is related to 68, it is necessary to absorb play caused by dimensional errors between each link, etc., which will be described later, and to reduce 1t of 76.
It is also useful for alleviating h-blows. 173 is a second connection link. The linked phosphorus/717
3 is rotatably supported by the door half 57 by a pin 174 at a substantially intermediate position. This link 17
An example edge at one end of 3 is the first connecting link 168
It is in contact with the side surface of the protrusion 170. Therefore, when the first connecting link 168 is rotated clockwise,
One end of the second connecting link 173 is pressed against the protrusion 170 of the first connecting link 168 and is rotated counterclockwise. Note that the head of the pin 174 is conical. 175 is a third connecting link;
is rotatably supported by the half 57 by a pin 176 at approximately the middle thereof. A hook piece 177 is bent on one side edge of one end of the connecting link 175, that is, the end on the second connecting link 173 side, and a protrusion 178 protruding upward is provided on the other end. There is. And this third
A hooking piece 177 formed at one end of the connecting link 175 is brought into contact with the other end of the second connecting link 173. Therefore, when the second connecting link 173 rotates counterclockwise, the hook piece 177 is suppressed by the other end of the second connecting link 173, and the third connecting link 175 is rotated clockwise. Note that the head of the pin 176 is formed into a conical shape. 179 is a left rotation arm. The rotation art t, 1
A guide pin 180 is installed at the tip of 79 so as to protrude toward T2.
A cage is installed. At the end of the rotating arm 179, there is a wall 181 that rises from the counterclockwise side edge and the wall 1
81 is provided with a bottom portion 182 extending from the L end of the J5 end, thereby forming a U-shaped support portion at the J5 end, and a support shaft 183 is inserted through the support portion. 57 so as to be rotatable. 18
4 is a spring, and a ring-shaped part 185 formed in the middle part is supported in an external fit on the support shaft 183, and one arm 186a rotates 1181+ of the arm 179, and the other arm 186b
are engaged with pins 187 erected in the doher 757, and the resilient force of the spring 184 constantly urges the rotating arm 179 to rotate clockwise. The rotating arm 7t l 79 has a clockwise inverted edge near its tip abutting against the spindle pin 176 of the third connecting link 175, whereby the rotating arm 1
79 in the clockwise direction is determined. Further, a sliding edge 188 is formed on the clockwise side edge near the base end of the first rotating arm 179, and the sliding edge 188 is connected to the protrusion 178 provided at the other end of the third connecting link 175.
It is in contact with. Therefore, when the aforementioned third connecting link 175 rotates once, the protrusion 178 provided at the other end extends over the sliding edge 188 of the rotating arm 179 from the left side to the right side. Press down and do this ↓ one rotation arm 17
9 is rotated counterclockwise. The one-turning arm 179 has a side edge in the one-turning direction of the counterclockwise crystal attached to the lower half 57. It comes into contact with the bar pin 189 and stops rotating (see FIG. 17). 190 is a tape cassette, -/t opening fitting, and the mounting part 1
91 and the open portion 192 are formed in an abbreviated shape when viewed from the front. And the mounting part 191 (rivet) 193.
193 is fixed to the lower half 57 by 1-91, and the open portion 192 is arranged vertically. The open part 192 is oriented in the direction along the front-rear force direction of the cassette adapter 71 when viewed from a plan view, and the rear half of one end is cut out in an abbreviated shape, so that the opening part 192 faces the direction along the front-rear force direction of the cassette adapter 71. Edge 1
94 or so. This opening part [190 functions to automatically open the cover 8 of the tape cassette 1 when the tape cassette 1 is attached to the cassette adapter 71. That is, the tape cassette l is passed through the F opening 58 of the cassette adapter 71 and its guide groove 48.49 is inserted into the protrusion 61.6 of the cassette adapter 71.
When the opening member 190 is inserted into the cassette adapter 71 along the tape cassette 2, the lower half of the opening member 190 is attached to the tape cassette.
The tape is inserted into the set of eight tapes 1 through a notch 52 formed on the bottom surface of the tape. 1. First, open part J1
The inclined edge 194 of the cover stopper 36 is brought into contact with the lower end edge of the inclined surface 195 formed at the tip of the cover stopper 36 (the 20th
(see figure). In this case, since the upper edge 196 of the opening part 192 of the opening fitting 190 corresponds to the notch 53 of the cover 8 of the tape cassette l, this upper edge 196 does not come into +X contact with the cover 8 yet. When the tape cassette l is further lowered from the state shown in FIG. 20, the opening fitting 190 will rise as shown by an arrow 197 in relation to the tape cassette l. Therefore. Since the inclined edge 194 of the opening fitting 190 approaches the lower edge of the inclined part 195 of the cover stopper 36, the tip of the cover stopper 36 is pressed in a direction against the elastic force of the spring 42, in the direction of arrow 198. is rotated. As a result, the protrusion 3 that was held in the hole 40 of the cover 8
8 is removed from the chain hole 40, and the cover 8 becomes rotatable (see FIG. 21). In this state shown in FIG. 21, the L edge 196 of the open fitting 190 comes into contact with the back (-) end 199 of the notch 53 formed in the cover 8. When the tape cassette 1 is further lowered from the state shown in FIG.
96 is one end edge 199 of the notch 53 formed in the cover 8.
The force <-8 rotates to the 1st position and opens as shown in Figure 22. The tape cassette 1, which is attached to the cassette adapter 71 as shown in L, has positioning holes 200 and 201 formed on the bottom surface of the tape cassette 1, which are connected to pins 1, 74 and 176, which are erected in the toe half 57 of the cassette adapter 71. It is seated on a conical head, by which the final positioning of the tape cassette l within the cassette adapter 71 is achieved. When the tape cassette l is loaded into the tape cassette I/agebuta 71 as described in 1-, the path of the magnetic tape between the tape reel 6 and the tape reel 7 of the tape cassette l, that is, the tape path is This is shown by the two-dot chain line in Figure 8. At this time, the rotating rollers 14 provided at the tips of the rotating arms 143 and 179 of the cassette adapter 71
7 and the guide pin 180 are located in the tape drawer section 43 of the tape tensioner l. When the f-moving disc 106 is rotated counterclockwise from the state shown in FIG. 8, the opening/closing gear 141 is rotated clockwise, and the rotating arm 1
One turn to pull the pin 157 of 43 7h l 4
3 rotates clockwise to the state shown in FIG. 17. When the fifth rotation arm 143 is rotated to the position shown in FIG.
3. The signal is transmitted to the left rotation arm 179 via the third connection link 175, and causes the rotation arm 179 to rotate counterclockwise to the position shown in FIG. While the left and right rotation arms 143 and 179 are rotated in this manner, the magnetic tape 5 of the tape cassette L is pulled out by the guide rollers 147 and guide pins 180 of the meat rotation arms 143 and 179, and the M tightening The number in Figure 17 is shown on the mold as indicated by the two-dot chain line. In addition, tape cassette l
When the tape cassette adapter 71 is attached to the cassette adapter 71, there is no lock release pin or tape cassette 1 at the bottom.
The tape is inserted into the tensioner 1 through the hole 51, rotates the reel stopper 17.
6 and the notch 34.35 of the tape reel 6.7 is released, and the tape reel 6.7 becomes in a state where it can be rotated. Furthermore, by rotating the moving disk 106 during the loading operation described in 1, the take-up gear 126 is also rotated, but the tip of the swing plate 94 is in an unreflected state as shown in FIG. 17.
Since the take-up gear 126 is separated from the drive gear 85, it merely rotates idly. The position of the magnetic tape 5 marked in FIG. 17 is the same as the initial position of the magnetic tape in the normal size tape cassette. Therefore, when the tape cassette l is installed and the magnetic tape 5 is pulled out, the state y! cassette adapter 7
The magnetic tape 5 of the small tape cassette 1 can be used by attaching the magnetic tape 1 to a VTR or the like for normal size tape cassettes. When you have finished using the VTR, etc., remove the cassette/ ) adapter 711 from the VTR-9, and then rotate the r drive plate 106 clockwise. Then, the opening/closing gear 141 rotates counterclockwise, and the connection play) 158
presses the pin 157 of the rotating arm 143, so the rotating arm 143 rotates counterclockwise to the state shown in FIG. 86. Then, the rotating arm 143 rotates counterclockwise. As the first connecting link 168
, the force applied to the connecting links 173 and 175 is removed, and the left rotating arm 179 is rotated clockwise by the force of the spring 184, causing the rotating arm 143 to move as shown in FIG. When the state shown is reached, the eighth
Return to the initial position as shown. Simultaneously with the rotation of the rotating arm 143 in the counterclockwise direction, a force is applied to the tip of the arm 117 of the swing plate 94 via the gear 118 and the friction ring 119 to cause it to rotate clockwise. As a result, the swing plate 94 is rotated clockwise to the state shown by the two-dot chain line in FIG.
6 is meshed with the drive gear 85. And the volume gear 12
6 rotates through the transmission gear 135, so the rotation of the drive gear 85 rotates the blade center 78 through the transmission gear 90. This causes the tape reel 7 to rotate clockwise, and the portion of the magnetic tape 5 that has been pulled out of the tape cassette l is wound onto the tape reel 7. Manual disc 106 is used to wind the tape into a force center.
The Pj friction plate 139 is connected to the transmission gear 135 and the stopper 138, and the same friction plate 1
Transmission gear 135 and receiver 13 connected via 40
The opening is accommodated by sliding between the magnetic tape 5 and the magnetic tape 5.
It is designed so that no excessive force is applied to it. The tape force center 1 with the magnetic tape 5 rewound as shown in FIG. 1 is taken out from the cassette adapter 71. As is clear from the above description, the cassette adapter of the present invention includes a rope ink mechanism that pulls out the magnetic tape from the tape cassette, and an unloading mechanism that rewinds the magnetic tape pulled out from the tape cassette into the tape cassette. The loading mechanism includes a first rotating arm that has a guide pin at its pulling end, and a first rotating arm that also has a guide pin at its pulling end and is rotated in conjunction with the $1 rotating arm. and a second rotating arm. a rotation mechanism that rotates the first rotation arm, and the rotation mechanism includes a lock that prevents the first rotation arm from returning more than a predetermined angle in the unloading direction when the loading is completed. This feature prevents the position of the magnetic tape from shifting due to unforeseen circumstances after loading the magnetic tape into the same initial position as the normal size tape cassette.
It is extremely suitable as a cassette adapter for use with R, etc.

[Brief explanation of drawings]

Figures 1 to 5 show an example of a small tape cassette that can be applied to the cassette adapter of the present invention. Figure 1 is an overall perspective view, and Figure 2 shows a state with the cover opened and the MSt tape slightly pulled out. Fig. 3 is a plan view with the top half removed; Fig. 4 is a bottom view; Fig. 5 is a perspective view of the open position as seen from the bottom;
6 to 22 rA show an example of implementation of the cassette adapter according to the present invention, FIG. 6 is a perspective view showing the adapter case with its lid open, and FIG. 7 is a perspective view showing the adapter case with the lid opened. Figure 8 is a plan view showing the entire structure with the beads removed.
・-) is removed, Fig. 9 is a plan view of A in Fig. 8.
- A sectional view taken along line A, Figure 1O1 is a longitudinal sectional view of the main part of the small tape cassette attached to the cassette adapter, and Figure 11 is a sectional view taken along line B-B4 in Figure 8. 12
The figure is a sectional view taken along the line C-C in Fig. 8, Fig. 13 is a sectional view taken along the line D-D in Fig. 8, and Fig. 14 is a sectional view of the winding mechanism for the magnetic tape pulled out of the tape cassette. FIG. 15 is an exploded perspective view showing the main parts of the rotating arm rotation mechanism; FIG. 16 is a cross-sectional view of the main parts showing the rotating arm in the middle of rotation. , Fig. 17 is a partly omitted plan view showing the two rotating arms in a fully opened state, and Fig. 18 is a partially omitted view showing the state in which the two rotating arms are fully open.
FIG. 19 is a sectional view taken along line E-E in FIG. 8;
FIGS. 20 to 22 are perspective views of essential parts sequentially showing how the cover of the tape cassette is automatically opened. Explanation of codes: 1: Child-book cassette, 5: Magnetic tape,
141... Joint moving member, 142... Connection point,
Rotating arm of 143・Φ・if. 147... Guide pin, 157... Point of action,
158φ・No. connecting member, 161... Life connecting member, 179-... Second rotating arm, 180... Life guide pin out 1 person Sony Corporation Denchu 1 Figure 18 (/4) Figure 19 2D diagram\

Claims (3)

[Claims] (1) It has a loading mechanism that pulls out the magnetic tape from the tape cassette, and an unloading mechanism that rewinds the magnetic tape pulled out from the tape cassette into the tape cassette.The loading mechanism is equipped with a guide pin at the swing end. A second rotating arm that is also provided with a guide pin at its swinging end and rotates in conjunction with the first rotating arm, and a second rotating arm that rotates the first rotating arm. and a rotating mechanism for moving the cassette, the rotating mechanism having a locking function to prevent the first rotating arm from returning to the predetermined angle tool unloading direction when the loading is completed. adapter (2) Feature +i' characterized in that an elastic force is applied to the rotating arm of if in the direction of rotating in the loading direction.
Cassette adapter described in fli＾ desired range 1xj4 (3) The magnetic 5 is equipped with a loading mechanism that pulls out the tape from the tape cassette, and an unloading mechanism that rewinds the magnetic tape pulled out from the tape cassette into the tape cassette.The loading mechanism has a guide pin at the swing end. a second rotating arm that also has a guide pin at its swinging end and is rotated in conjunction with the first rotating arm; and the first rotating arm. and a rotation mechanism that rotates the rotation member, and the rotation mechanism connects the rotation member, a position offset from the rotation center of the rotation member, and the point of action of the first rotation arm. and a connecting member, and when loading is completed, the connecting point of the rotating member with the connecting member is the extension of the line IX connecting the point of action of the first rotating member and the center of rotation of the rotating member. '4. +r′6! A cassette adapter (4) consisting of a connecting member or connecting plate and a tension coil spring, with a pin formed in these members at one or both of the connecting points of the connecting plate with the first pivot arm and the pivot member. The first rotating arm is connected by a long hole formed in the connecting plate, and when the first rotating arm is rotated in the loading direction, a tensile force is applied by the coil spring, and when the first rotating arm is rotated in the unloading direction, the pressing force by the connecting plate is applied. The cassette adapter according to claim 3, wherein the first rotating arm is rotated by