JPH03181083A - Cassette adapter - Google Patents

Abstract

PURPOSE:To use a small-sized tape cassette in a VTR for normal-sized tape cassette by locking the holding state of a holding mechanism in accordance with the start of loading operation and unlocking the holding state in accordance with the completion of unloading operation. CONSTITUTION:Holding mechanisms 66, 83, 84, 109, and 110 are provided which prevent a small-sized tape cassette from slipping off a cassette holding part of a cassette adapter 60 after setting of the tape cassette to the cassette holding part. Unless the tape cassette is set to the holding part, the loading operation of loading mechanisms 162, 275, 290, 298, 303, 305, and 309 is not started. After the tape is led out of the tape cassette once, the holding state of holding mechanisms 66, 83, 84, 109, and 110 cannot be unlocked unless the led-out tape is taken up in the tape cassette 1. Thus, the small-sized tape cassette can be used in the VTR for normal-sized tape cassette.

Description

[Detailed description of the invention]

FIELD OF INDUSTRIAL APPLICATION This 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 in video tape recorders or videotape players (hereinafter referred to as rVTJ) , ) for use with a VTR, etc. for normal size tape cassettes, in particular, after a small tape cassette is attached to the cassette holder of the cassette adapter, the tape cassette should be prevented from falling off from the cassette holder. In addition, the loading operation of the loading mechanism is not started until after the tape cassette is attached to the holding part, and once the tape is pulled out from the tape cassette, the pulled out tape is It is an object of the present invention to provide a novel cassette adapter in which the holding state by the holding mechanism cannot be released unless the tape is wound into a tape cassette. BACKGROUND TECHNOLOGY AND PROBLEMS VTRs have become surprisingly popular compared to the first paragraph. With this widespread use, VTRs have become extremely familiar, and their uses have expanded, and the demand for more convenience and ease of use has led to demands for smaller devices, and eventually smaller tape cassettes. is increasing. Various attempts have been made to meet the demand for smaller tape cassettes, but as small tape cassettes become more widespread, the already huge number of normal-sized tape cassette VTRs will become useless. There is a problem of coming. Therefore, we came up with an adapter method, in which we prepare a cassette adapter that has approximately the same appearance and size as a normal size tape cassette, and attach a small tape cassette to the cassette holding part of the cassette adapter. Pull out the magnetic tape from the cassette so that the magnetic tape is in the same position as the initial position of the magnetic tape in the normal size tape cassette, and then connect the cassette adapter with the small tape cassette installed to the VTR.
This is intended to enable the use of small tape cassettes in VTRs designed for normal size tape cassettes. In such a cassette adapter, while handling the cassette adapter with a tape cassette attached, the tape cassette may fall off from the cassette holding part (hereinafter simply referred to as the holding part) of the cassette adapter for some reason, or Even if the tape cassette does not fall off, it may be lifted from its normal mounting position in the holder due to a slight impact, and even if the tape cassette is not attached to the holder, it may be forgotten and careless. If the loading mechanism starts the loading operation, or if the tape is being pulled out from the tape cassette attached to the holder of the cassette adapter, the user may forget this and carelessly hold the tape cassette. There are also those who are treated like they are taken out of the department. If the magnetic tape falls off or floats up, or if it is carelessly loaded or unloaded, the magnetic tape may become creased or cut, and even if the magnetic tape does not fall off but floats up, the magnetic tape may fall off the head drum of the VTR. If the magnetic tape is not loaded smoothly, the magnetic tape may be folded or wrinkled, it may become impossible to load, or in the worst case, the magnetic tape may break, or it may cause the VTR to malfunction. In any case, it may cause a serious malfunction. Purpose of the Invention Therefore, the present invention provides a holding mechanism that prevents the tape cassette from falling off from the cassette holding part of the cassette adapter after the small tape cassette is attached to the cassette holding part of the cassette adapter. The loading operation of the loading mechanism is not started until after the tape is loaded into the tape cassette, and once the tape is pulled out from the tape cassette, the holding mechanism An object of the present invention is to provide a new cassette adapter which cannot be released from a holding state. Summary of the Invention In order to achieve the above object, the cassette adapter of the present invention has the following features:
In a cassette adapter to which a small-sized tape cassette is attached and used in a recording/playback device for a larger-sized tape cassette, the loading operation of pulling out the tape from the tape cassette attached to the holder of the cassette adapter and the tape a loading mechanism that performs an unloading operation to rewind the tape pulled out from the cassette into the tape cassette; a holding mechanism that prevents the tape cassette mounted on the holding section from falling off; a locking mechanism that later enables the loading operation of the loading mechanism to start, locks the holding state by the holding mechanism in conjunction with the start of the loading operation, and unlocks the held state in conjunction with the completion of the unloading operation; It is characterized by having the following. EXAMPLES The details of the cassette adapter of the present invention will be explained below according to the illustrated embodiments, but first, an example of a small tape cassette suitable for being attached to the cassette adapter of the present invention will be explained with reference to FIG. 2 is a small tape cassette 1 for a small video tape recorder, in which two tape reels 6 and 7 each having both ends of a magnetic tape 5 wound therein are arranged in a cassette case 4 consisting of an upper half 2 and a lower half 3. The front surface of the cassette case 4, which is the tape drawer, is covered with a cover 8 that can be opened and closed. Reference numeral 43 denotes a tape drawer recess of the cassette case. Next, an embodiment of the cassette adapter according to the present invention will be described with reference to FIG. 53 is an adapter case, upper half 54 and lower half 55
The adapter case 53 is formed by combining the adapter case 53 with various elements described below in combination. An opening 56 for inserting a small tape cassette is formed on the upper surface of the upper half 54 at a position offset to one side, and a circular opening 57 is formed on the upper surface of the upper half 54 at a position offset to the other side. The opening 56 is provided with an appropriate lid that can be opened and closed as needed. Reference numeral 58 denotes a trapezoidal notch formed at the front edge of the lower half 55 of the adapter case 53, into which a loading bin for a VTR or the like is inserted. 59 is upper half 54
This is a trapezoidal notch formed on the front edge of the notch 5.
9, it is possible to check whether the 6n tape of the small tape cassette has been correctly loaded in the cassette adapter in the initial state by simply looking from above the cassette adapter. Next, details of the internal structure of the cassette adapter 60 will be explained with reference to FIGS. 3 to 15. Reference numerals 61 and 62 denote partition walls provided near one side edge and the other side of the lower half 55, and the space between the partition walls 61 and 62 constitutes a cassette holding section. One partition wall 61 has an L-shaped mounting piece 63, 63 fixed to the lower half 55 from the lower edge, and the other partition wall 62 has an L-shaped mounting piece 64 fixed to the lower half. It is fixed to the half 55, and the side surface of the distal end is fixed to the bulkhead support piece 155 of the bracket 154 (see FIGS. 13 and 21). And the distance is 6! , 62 are each provided with a protruding piece 65, 65 bent in a crank shape toward the side edge of the lower half 55.
is formed. However, the small tape cassette 1 is
The cassette case 4 is mounted with both side surfaces along the inner wall surfaces of the partition walls 61 and 62. 66 is adjacent to the rear wall 67 of the lower half 55 and the rear side wall 67
This is an operator provided so as to be able to slide left and right along the slider, and is used to slide sliders 83 and 84 of the cassette holding mechanism, which will be described later. The operator 6
6 includes a substantially bow-shaped head 70 having an inclined surface 68 on the lower surface and a flat surface 69 continuous to the lower end of the inclined surface 68; A protrusion 72 for finger rest and a recess 73 following the protrusion 72 are formed in the center of the upper surface, separated from the pressure part 71. 74 is head 7
The guide groove 74 is an inclined guide groove that penetrates in the width direction and extends in the left-right direction, and a regulation groove 75 that is continuously bent upward in an L-shape is formed from the inclined lower end of the guide groove 74. Reference numeral 76 denotes an inclined guide groove that passes through the pressure portion 71 in the width direction and extends in the left-right direction. Reference numerals 77 and 78 designate guide pins protruding from the inside 111 of the rear wall 67 of the lower half 55. One guide pin 77 is inserted into the guide groove 74 of the operator 66, and the other guide pin 78 is inserted into the guide groove 74 of the operator 66. 66 guide groove 76,
The tip of each guide bin 77.78 is connected to each guide groove 74.76.
An E-ring 81.82 is protruded from the protrusion and engaged with a groove 79.80 formed in the protrusion, whereby the operating element 6
6 is prevented from being removed from the guide bins 77 and 78,
It is supported by the guide bins 77 and 78 and held so as to be slidable left and right. Reference numerals 83 and 84 denote sliders each in the shape of an elongated plate, which are provided close to the rear wall 67 of the lower half 55;
In conjunction with the left and right sliding operation of the slider 66, the sliders 66 are slid in mutually opposite directions. First slider 83
are two inclined guide grooves 86 and 87 that extend parallel to the left and right directions at the top and bottom of the wide base 85 and whose formation positions in the left and right direction are slightly different; A narrow front part 89 is formed with a bent guide groove 88 and extends along the side surface of the head 70 of the operator 66, and a hook 91 is formed at the tip of the front part 89. is adapted to be engaged with a pin 92 formed on the side surface of the head 70 of the operator 66. Further, the second slider 84 has a notch 98 formed at the lower edge of a wide base 97, and a guide groove 99 extending horizontally at a position near the base end of the base 97.
A rotation guide groove 100 bent at a substantially right angle is formed at a position near the opposite proximal end of the base 97 .
A release piece 101 is formed near the base end of the cassette adapter 60 by cutting a part of the plate horizontally toward the inside of the cassette adapter 60. The release piece 101 has an inclined edge 102 extending from its protruding tip toward the plate. The narrow front portion 103 of this second slider 84
A rack 104 is formed on the upper edge, and this rack 104 meshes with the gear 96 below the gear 96, and the lower edge of the front part 103 has a flat part 105 projecting in a letter shape. A guide groove 106 extending in the left-right direction is formed in this plane portion 105. ,+07
is a guide bin installed vertically on the lower half 55 and slidably engaged with the guide groove 106, and the kite pin 107
A large-diameter head 108 is formed at the upper end of the slider 84 to prevent the second slider 84 from being pulled out upward at the front end. Note that the groove above the rotation guide groove 88 bent at right angles in the first slider 83 and the second slider 8
The upper groove portions of the rotation guide groove 100 bent at right angles at 4 are bent in directions facing each other. Reference numerals 109 and 110 denote retainers provided along the respective upper edges of the partition walls 61 and 62, which are used to push the upper side edges of the tape cassette 1 attached to the cassette holder, so that the tape cassette 1 is This is to prevent the cassette from falling off the cassette holding section. This retainer 109.1
10 has r^ parts 111 and 112 each having a support hole (not shown) formed therein, and the cylindrical part 111
．． The pins 113, 114 and 115, 116, which are horizontally protruded from the rear wall 67 of the lower half at both longitudinal ends of the pin 112, are loosely inserted.
It is rotatably supported around 13.115 and 114.116 as axes. Each of the parts 111 and 112 has a presser piece 117.1 that protrudes like an eave along the longitudinal direction thereof.
18 are integrally formed, and each part 111, 112
Arm pieces 119 and 120 are integrally formed on the rear side wall. As shown in FIG. 4, the holding pieces 117 and 118 protrude from each cylindrical portion 111 and 112 in directions opposite to each other,
Further, the arm pieces 119 and 120 extend diagonally from the rear end of each cylindrical portion 111 and 112 toward opposite sides, so that the presser piece 117 and the arm piece 119 in one retainer 109 are different from each other when viewed from the side. The holding piece 118 of the other retainer 110 has a substantially U-shape downward to the left (as viewed in FIG. 4).
The arm piece 120 has a substantially U-shape that slopes downward to the right. A pin 121. is provided below each arm piece 119.120.
122 protrude toward the sliders 83 and 84, respectively, and the bottle 121 of the arm piece 119 is attached to the first slider 83.
The pin 12 of the arm piece 120 is engaged with the rotation guide groove 88 of the arm piece 120.
2 is engaged with the rotation guide groove 100 of the second slider 84. Reference numeral 123 designates a leaf spring erected on the lower half 55 on the side of the head 70 of the operator 66 at a distance sufficient to allow the tip 0116 of the head 70 to fully abut in a position far to the right. 124 is beyond that

Reference numeral 11^ denotes a cassette push-up piece that protrudes to approximately the center between the aforementioned partition walls 61 and 62 and whose base end is rotatably supported below the operator 66. This cassette push-up piece 124 has an operating piece portion 125 placed in close contact with a lower half 55 surface between a presser ring 131 and an impeller 137, which will be described later, and its lower edge is placed on the lower half 55 surface at the base end. Rotating branches 126.126 are formed with a slight interval between them and stand parallel to each other, and further j, % Q of the rotating branches 126.126
In ii" 4, a gate-shaped rotating operation piece 127 is formed so as to be installed on the upper edge of the rotating support piece 126.126. 128. The above-mentioned rotating support pieces [26, 126 are bearing pieces 128,
128 is rotatably supported by a shaft 129, and the actuating piece 125 can be rotated upward using the shaft 129 as a rotation fulcrum. In addition, the central part of the shaft 129? An E-ring (not shown) is engaged with m 130 to prevent removal. 137 is an impeller rotatably supported by the lower half 55. The impeller 137 has a plurality of protrusions 138, 138, 138 integrally formed along the axial direction on the outer peripheral surface of the cylindrical body.
and a flange 139 integrally formed at the lower end of the cylindrical body, and gear teeth 140 are provided on the outer peripheral surface of the flange 139.
, 140, . . . are formed. Reference numeral 141 denotes a spindle pin installed vertically in the lower half 55, and the impeller 1 is connected to the spindle pin 141 via bearings 142 and 142.
A cylindrical body 37 is held in an externally fitted manner, whereby the impeller 137 is rotatably supported by the lower half 55. 14
A stopper 3 is fixed to the upper end of the spindle pin 141 and prevents the impeller 137 from coming off the spindle pin 141. 144 is a drive gear, which is rotatably supported by a bracket 145 fixed to the lower half 55. This drive gear 144 is a cylindrical portion 14 to which a drive impeller (not shown) protruding from a reel stand of a VTR or the like is engaged from below.
6 and a flange 147 provided at the lower ζ116 portion of the cylindrical portion 146, and gears 6J148, 148, . . . are formed on the outer peripheral surface of the flange 147. 149 is a transmission gear rotatably supported by the lower half 55, and gear teeth 150, 150, .
... is the gear tooth 140.140 of the impeller 137.
and gear teeth 148, 148, . 154 (see FIG. 8) is the other partition wall 62 of the lower half 55.
This is a plate-shaped bracket that occupies much of the planar space between the lower half 55 and the other side wall, and is placed at a slight distance from the surface of the lower half 55 (this bracket 154 is partially shown in FIG. (The illustration is omitted in other plan views). This bracket 154 has the above-described partition support piece 155 erected at one bent end, has a long hole 156 extending in the depth direction of the adapter 60 in the center, and has a bottle insertion hole in the protrusion 157 on the side of the center. 158 and an arcuate groove 1 centered on the center of the hole 158.
59 are formed respectively, and a bottle 160 is formed at the other end.
is erected, and furthermore, a push button mounting piece 161 is provided on the other side edge of the center part.
has been erected. Although not shown, the bracket 154 is attached to the lower half 55 by a bottle or the like at various locations.
The bracket 154 is supported at a certain distance from the surface, and mechanisms and members described later are attached to the upper and lower surfaces of the bracket 154 in an operational relationship with each other. Hereinafter, those mechanisms and members will be explained. Reference numeral 162 denotes an opening/closing gear, which is rotatably supported by a bin 163 erected in the center of the bracket 154, and gears IfT165, 165, etc. are provided on the circumferential surface of the gear portion 164.
A disk portion 166 having a slightly smaller diameter than the gear portion 164 is integrally formed at the lower part of the gear portion 164. The outer circumferential surface 167 of this disk portion 166 has a recess 16 formed by cutting out a part of the outer circumferential surface 167.
8 is formed, one notch surface of the recess is a convex dj surface 169, and the outer circumferential surface 167 and this recess 168 are
It is said that one surface has nine consecutive surfaces. An E-ring 17 is placed in the groove 170 at the upper end of the pin 163.
1 is engaged, whereby the opening/closing gear bin 163
There is a restriction on removal from the tank. 172 is a one-way clutch mechanism, which is connected to the opening/closing gear 16 described above.
By appropriately meshing with the second gear teeth 165, 165, . . . , the opening/closing gear 162 can be controlled to rotate in only one direction at any time. , 173 is a support shaft inserted through the bottle insertion hole 158 of the bracket, and stoppers 174 and 175 are attached to this support shaft 173.
are rotatably inserted and supported in a vertically overlapping state. The stoppers 174 and 175 are substantially symmetrical to each other in their planar shapes, and each has a hole 176 and 177 in its center.
are provided, and hook claws 178, 179 are formed at each operating tip, head pins 180, 181 are provided upright on each operating base, and furthermore, hook claws 178, 179 are formed on the lower surface of each operating tip.
Leg pieces 182 and 183 are formed which protrude further than 9, and leg bins 184 and 185 (see FIG. 8) are respectively protruded from the lower surface of the tip of each of the leg pieces 182 and 183. There is. Note that the leg pieces 182 and 183 are formed so that the leg piece 182 of the stopper 174 located on the upper side is longer than the leg piece 183 of the stopper 175 located on the lower side, and both stoppers 174 and 175 are overlapped. When the bottom surface of each leg piece 182.183 and each foot bin 184.1
The lower ends of 85 are positioned at the same height. In this way, the stoppers 174 and 175 are attached to the support shaft 173.
Insert each hole 176, 177 of each foot bottle 184, 185
is formed on the bracket 154 and is slidably engaged with the arcuate groove 159. After the two stoppers 174 and 175 are overlapped, the ring-shaped part of the torsion spring 186 is inserted into the support @173, and both arms of the spring 186 are inserted. , each stopper 174.
The E-ring 1 is fitted into the groove 187 at the upper end of the support shaft 173.
88. The stoppers 174 and 175 are always resiliently biased by the spring 186 in the direction in which the hooking claws 178, 179 are engaged with the gear teeth 165, 165, . . . of the opening/closing gear 162. Therefore, each stopper 17
4.175 uses the spindle 173 as a rotational fulcrum and the foot bin 1
84.185 are provided so as to be able to rotate while being guided by the arcuate groove 159 and against the single bow force of the spring 186, so that each of the leg pieces 182.
183 is pressed to open, the stopper 174, 175 will only have one of its catch claws 178, 179 engage the gear teeth 165, 165 of the opening/closing gear 162.
,... will be interlocked. The stoppers 174 and 175 cannot rotate at all in the direction in which the hooking claws 178, 179 bite into the gear teeth 165, 165 of the opening/closing gear 162;
79 can be rotated in the direction in which it is pushed out from the gear teeth 165, 165, . . . against the elastic force of the spring 186. By meshing with the teeth 165 and 165, the rotatable direction of the opening/closing gear 162 can be controlled to only one direction. For example, in the state of the clutch mechanism 172 shown in FIG.
・In this state, the opening/closing gear 16
2 can be rotated only in the clockwise direction. On the contrary, the hook 179 of the stopper 175 is connected to the gear @165.
．． 165, . . . (of course, at the same time, the hooking pawls 178 that had been engaged until then are disengaged), the opening/closing gear 162 can be rotated only in the counterclockwise direction. A lock plate 189 is slidably disposed along the lower surface of the bracket 154. This lock plate 1
89 is formed with elongated holes 190 and 191 extending in the anteroposterior direction at two locations spaced apart in the anteroposterior direction.
Guide pins 192 and 193 erected in the lower half 55 between the lower half 55 and the bracket 154 are inserted into the elongated holes 1 of each of the guide pins 192 and 193.
The cassette adapter 60 is placed between the shoulder 194.195 and the lower surface of the bracket 154 by being placed on the shoulder 194.195, which has a diameter larger than the width of 90.191.
It is supported so that it can freely slide in the front and rear directions. The rear part 11i of this lock plate 189 is erected at right angles, and a lock claw 196 is provided on the upper edge side of the lock plate 189 so as to protrude toward the side surface of the base of the second slider 84 in the above-mentioned holding mechanism. The protruding tip of is located close to the side surface of the base of the second slider 84. The tip of the lock plate 189 is bent downward to form a hook piece 197. Reference numeral 198 designates one of the support pins of the bracket 154 erected on the lower half 55, which connects the support pin 198 and the hook piece 19 at the tip of the lock plate.
A tension spring 199 is stretched between it and 7. As a result, the lock plate 189 is always pulled in the forward direction of the adapter 60, and each guide pin 192
．． 193 is in contact with the rear end of each elongated hole 190, 191. Reference numeral 200 designates a bottle erected on the upper surface of the lock plate 189 in the approximate center thereof, and passes through the elongated hole 156 of the bracket 154 and comes into contact with the circumferential surface of the disk portion 166 of the opening/closing gear 162. Therefore, when the recess 168 of the disc portion 166 faces the bottle 200, the bottle 200 is engaged with the recess 168. Reference numeral 201 denotes a switching plate having a substantially inverted C-shape in plan view, and is placed on the upper surface of the bracket 154, with a bent portion 202 at its tip inserted under the lower surface of the disc portion 166 of the closing gear 162. Ru. A hole 203 formed in the center of the tip 116 bent portion 202 is loosely inserted into the bin 163, and constitutes a pivot point for the switching plate 201. The beak-shaped operating tip 204 of the tip bent portion 202 is located between the foot pins 184 and 185 above the arcuate groove 159 into which the foot pins 184 and 185 of the clutch mechanism 172 described above are inserted. One side edge of the central part of the inverted C-shape is provided with a notch 205 that is largely hollowed out to prevent the side edge from hitting the aforementioned bottle 200 when the plate 201 is rotated. The operating base end extends to the rear end of the bracket 154, and the operating base end is formed with an arcuate guide groove 206 extending substantially in the left-right direction.
The above-mentioned bottle 160 is inserted through this, and an engagement piece 207 is provided upright on one side edge of the operating base end. This engagement piece 207 has side pieces 208 and 209 that are bent so as to form a single shape in a planar shape, and one side piece 208 has about half of its lower part cut out and has a cutout upper fi 210 and a cutout. A vertical edge 211 is formed, a lower edge of which is connected to the cutout upper edge 210, and the other side piece 209 is bent into a letter-1 shape. A hole 212 is bored in the other side piece 209, and this hole 212 and the above-mentioned bracket 1
A tension spring 214 is stretched between the tension spring 214 and the hole 213 formed in the push button mounting piece 161 of 54, so that the switching plate 201 is always directed in the direction (
Is the bottle 160 a guide? A 206 left i! (in FIG. 9). Further, reference numeral 215 denotes a projecting piece that is erected on the other side edge of the switching plate 201 at a position corresponding to the push button mounting piece 161 of the bracket 154. Reference numeral 216 denotes a switching plate locking body that locks or releases the switching operation by the switching plate 201, and is detachably engaged with the engagement piece 207 of the switching plate 201. This lock body 216
are the upper pieces 2 that protrude from the wall piece 217, its upper part 5j16, and its lower end, and are slightly rubbed in the upward and downward directions, respectively.
18 and the lower piece 219 form a U-shaped side surface. And the upper piece 218 and the lower piece 219
Holes 220 and 221 are coaxially drilled in the center of the base piece, and the pin 160 is inserted through the hole 2201221, thereby forming a rotation fulcrum for the lock body 216. The upper piece 218 has a planar, substantially inverted C-shaped projecting piece 222 erected at its tip, and the lower piece 219 is located on the projecting piece 222 side of the upper piece 218 of both side edges of the piece. side u22
3 is cut off into a crank shape, and a step side u225 is formed via the step 224. The lock body 216 having such a shape can fit the bottle 1 into the hole 220, 221.
60 is inserted into one side edge 223 of the lower piece 219 or under the notch upper edge 210 of the engagement piece 207 of the switching plate 201 and comes into contact with the notch longitudinal edge 211, and the upper piece 218 is brought into contact with the notch vertical edge 211. It is placed so as to cover the joint piece 207 from above. A torsion spring 226 is disposed between the upper piece 218 and the lower piece 219 of the lock body 216 with its annular portion inserted through the pin 160, and one arm of the spring 226 is connected to one side of the engagement piece 207. 208 and the other arm is engaged with the side edge 217 of the wall piece 217 of the lock body 216, whereby the lock body 21
6 is normally biased with a rotational force in a counterclockwise direction using the bin 160 as a rotational fulcrum. An E-ring 228 is engaged with a groove 229 formed at the upper end of the bottle 160, thereby preventing the lock body 216 from being removed from the bottle 160. 230 is a stamp, a flange 233 is formed at one end, and a hole 231 is formed on the 116 side of the seal.
Furthermore, a bottle 232 is erected on the axis of the filling 231. Reference numeral 234 denotes a bracket for holding the push button 230, and an opening 235 through which the push button 230 is inserted is formed, and the outside of the opening 235 is a tapered expanded portion 236. A coil spring 237 is built into the hole 231 of the push button 230, and the push button 230 is inserted into the opening 235 of the bracket, and the rear bracket 234 is appropriately attached to the push button mounting piece 161 of the bracket 54 described above. During this installation, the flange 233 of the push button 230 comes into contact with the outer surface of the protrusion 215 of the switching plate 201. In this way, the push button 230
15 and the bracket 234, the spring force of a built-in coil spring 237 normally resiliently urges the bracket 234 side and holds it. If the push button 230 is pushed in from the side of the tapered expanded portion 236 of the bracket 234, the push-in action will be caused by the above-described projecting piece 2151 of the switching plate 201. : Acts as a pressing force from the side. 238 is a take-up idler mechanism. Reference numeral 240 is a swing plate, and its base end 239 is rotatably supported by a bin 241 (not shown in FIG. 8) erected on the lower half 55. A leg bin 242 is provided protruding downward from the tip side of the swinging plate 240, a cylindrical support tube 243 is integrally provided at a position near the tip, and a cylindrical support tube 243 is integrally provided at a position near the swinging base end. A bottle 244 is provided upright, and a low bottle 245 is provided upright near the center. A take-up gear 246 is rotatably supported below the swing plate 240. A shaft 247 protruding upward is fixed to the center of the winding gear 246, and
47 is inserted into the support tube 243 from below. 2
48 is a roughly hat-shaped connecting body, and its raised part 249
is rotatably supported by being fitted onto the support tube 243. Further, a protrusion 250 is integrally formed at the center of the raised portion 249. A shaft 247 fixed to the take-up gear 246 extends upwardly through the center of the raised portion 249 of the connecting body 248, and the shaft 247 and the connecting body 248 are rotated together by a key means or the like. is combined with Reference numeral 251 is a substantially disc-shaped receiver, and a recess 252 formed at the center of the lower surface is fitted into a protrusion 250 formed at the top of the connecting body 248, whereby the receptor 251 is connected to the connecting body 248. The recess 252 and the protrusion 250 can be rotated integrally, and the recess 252 and the protrusion 250 can be rotated by 11 times the weight of the shaft 247. Reference numeral 253 is a compression coil spring fitted onto the crest 249 of the connecting body 248, and is compressed between the flange 254 formed at the lower end of the connecting body 248 and the receiver 251. Note that the shaft 247 also passes through the center of the receiver 251 and extends upward. A transmission gear 255 has a flange 256 integrally formed at its lower end, and a recess 257 formed in the center of the upper surface of the gear portion. The shaft 247 passes through the transmission gear 255 so that its upper end is within the recess 257 of the transmission gear 255, and a stopper 258 is fixed to the upper end of the shaft 247. Between the stopper 258 and the inner bottom surface of the recess 257 and between the lower surface of the flange 256 of the transmission gear 255 and the upper surface of the receiver 251, friction plates 259 and 260 made of a high-friction material such as a felt plate are respectively provided. or intervention is required. The groove 261 of the bottle 244 and the groove 2 of the bottle 160
62, a tension coil spring 263 is provided between the swing plate 240 and the swing end of the swing plate 240, which normally pulls the swing end of the swing plate 240 toward the rear wall 67 of the lower half of the adapter case. The leg pin 242 protruding downward from the plate 240 is brought into contact with the inner surface of the rear wall 67, and the take-up gear 246 is connected to the gear tooth 148.1 of the drive gear 144.
48, is in a state or state away from... 264 is a manual disc, which is rotatably inserted into the bin 241 described above. Disc 2 is attached to the bottom of the main part of manual disc 264.
A disk 265 having a diameter smaller than the outer diameter of the disk 264 is integrally formed on the lower surface of the disk 265, and a cylindrical portion 266 having a smaller diameter than the outer diameter of the disk 265 is integrally formed on the lower surface of the disk 265. The teeth 267, 267, .
... are formed respectively. Disc 264, Disc 2
65 and the center of the cylindrical portion 266, a push-through hole 269 is formed therethrough. Furthermore, a circular recess 270 is formed at the center of the upper surface of the manual disc 264, and a circular hook recess 271 is formed at the periphery. Then, the bottle 241 is inserted into the push-through hole 269, and the bottle 241 is inserted into the push-through hole 269.
The upper end of the bottle 241 is projected into a circular recess 270 formed on the upper surface of the manual disc 264, and an E-ring 273 is engaged with a structure 272 formed on the upper end of the bottle 241 that is projected into the circular recess 270. This only stops the manual disc 264 from being removed from the bin 241. A cap body 274 is fitted into a circular recess 270 formed on the upper surface of the manual disc 264. Note that the bin 241 is connected to the take-up idler mechanism 238 described above.
The bottle that is pushed through the base end 239 of the rocking plate 240 in , and the bottle that is inserted through the push-through hole 269 in the manual disk 264 are also used.
The base end portion 239 of the swing plate 240 is first inserted below, and the manual disk 264 is inserted through the upwardly projecting portion thereof. Gear teeth 267, 267, . Gear @268.
268, . . . are gear portions 1 of the opening/closing gear 162 described above.
Gear teeth 165, 165 formed on the outer peripheral surface of 64,...
・It is engaged with. Reference numeral 275 denotes a rotating arm for loading, which has a rectangular shape in plan view, and a bin 277 is erected upward at the tip of the longer arm 276, and a bearing 278 is attached to the bin 277. A roller 279 is rotatably supported therebetween. The shorter arm 280 of the rotating arm 275 has a wall 281 raised from the side edge near the longer arm 276 and an eaves portion 28 bent at a right angle from the upper edge of the wall 281.
2 is formed, thereby forming the cross section into a U-shape. Furthermore, a hook piece 283 is bent and formed at the base end of the long arm 276 mentioned above. The rotating arm 275 as described above is connected to the shorter arm 280 by the support bin 284 erected on the lower half 55.
It is rotatably supported by the lower halves 5 at the Δ portion. Reference numeral 285 designates a torsion spring having a ring-shaped portion 286 in the center, which is supported by the support bin 284 in an externally fitted manner, and one arm 287a is a wall 281 formed on the side edge of the shorter arm 280. The other arm 287b is engaged with a hook piece 283 formed at the base end of the longer arm 276. In addition, the shorter arm 280 of the rotating arm 275
A notch 288 is formed on the outer side surface of the torsion spring 285, and the other r@287b of the torsion spring 285 is formed in this notch 28.
It is located across 8. Furthermore, rotating arm 2
A bottle 289 is erected at a substantially connecting portion between the longer arm 276 and the shorter arm 280 of 75. 290 is a connecting plate, with insertion holes 291 and 2 at both ends.
92 is formed. One end of the connecting plate 290 is rotatably connected to the opening/closing gear 162 by inserting a pin 293 erected near the periphery of the opening/closing gear 162 into the insertion hole 291 of the connecting plate 290. do. In addition, the insertion hole 292 at the other end of the connection plate 290
By inserting the pin 289 of the rotary arm 275 into the rotary arm 275, the rotary arm 275 is also rotatably connected. 298 is a first connection link. The first connecting link 298 has a planar shape and an abbreviated shape, and is connected to the longer arm 2.
A protrusion 300 is formed at the tip of 99. Further, the tip of the shorter arm 301 serves as the rotation axis of the support bin (the loading rotation arm 275) 284.
It is rotatably supported by. The connecting link 29
A hook piece 302 is formed on the side edge corresponding to the proximal end of the longer arm 299 of 8, and the hook piece 302 is located at a position corresponding to the notch 288 of the rotating arm 275. ing. 303 is a second connection link. The connecting link 303
is located approximately in the middle of the lower half 5 by the bottle 304.
5 is rotatably supported. This connecting link 303
One side edge at one end is close to the side surface of the protrusion 300 of the first connecting link 298 . Therefore, the first
When the connecting link 298 is rotated clockwise, the second connecting link 303 has one end connected to the first connecting link 2.
It is pressed by the protrusion 300 of 98 and rotated counterclockwise. Incidentally, the head of the bottle 304 is shaped like a cone. 305 is a third connecting link;
is rotatably supported by the lower half 55 by a pin 306 at approximately the middle thereof. One end of the connecting link 305, that is, the second connecting link 303 side

[115] A protrusion 307 is erected on one side edge, and a protrusion 308 protruding upward is erected on the other end. The protrusion 307 erected at one end of the third connecting link 305 comes into contact with the other end of the second connecting link 303, so that when the second connecting link 303 rotates counterclockwise, ,
The protrusion 307 is pressed by the other end of the second connecting link 303, and the third connecting link 305 is prevented from rotating clockwise. Note that the head of the bottle 306 is formed into a conical shape. 309 is a left rotation arm. The rotating arm 309
A guide bin 310 is erected at the tip so as to protrude upward. The base end of the rotating arm 309 is provided with a wall 311 rising from the side edge in the counterclockwise direction and an eaves portion 312 extending from the upper end of the wall 311, thereby providing a U-shaped support at the base end. A portion is formed, and a support shaft 3 is attached to the support portion.
13 is inserted, whereby the rotating arm 309 is rotatably supported by the lower half 55. 314 is a torsion spring, and a ring-shaped part 315 formed in the middle part is supported by the support shaft 313 in an externally fitted manner, one arm 316a is attached to the wall 311 of the rotating arm 309, and the other arm 316a is attached to the wall 311 of the rotating arm 309.
16b are respectively engaged with the side surfaces of the protruding piece 65 formed at the tip of the partition wall 61, and by the elastic force of the spring 314, the rotating arm 309 is rotated clockwise. ing. Then, the clockwise side edge of the rotating arm 309 near z+j11 comes into contact with the spindle pin 306 of the third connecting link 305, thereby causing the rotating arm 309 to rotate in the clockwise direction. Limits are set. Furthermore, a sliding edge 317 is formed on the clockwise side edge near the base end of the rotating arm 309, and the sliding edge 317 is connected to a protrusion 308 provided at the other end of the third connecting link 305. It is in contact with. 318 is a tape cassette opening fitting that functions to automatically open the cover 8 of the tape cassette 1 when the tape cassette 1 is attached to the cassette adapter 60. Next, the tape cassette 1 is attached to the cassette adapter of the present invention described above, the tape is pulled out, and then the pulled out tape is wound into the tape cassette 1, and the tape cassette 1 is removed from the cassette adapter. The operation until it is taken out will be explained. In order to attach the cassette adapter l to the cassette adapter 6o, the holding mechanism is set in advance to a state in which the cassette can be attached. That is, the operator 66 is inserted into its guide groove 74 .
The first slider 83 is moved to the right by sliding it to the right until the left side i4 (in FIGS. 3 and 4) of 76 comes into contact with each guide bin 77, 78.
Slide the slider 84 to the left to remove each retainer 1.
09 and 110 are erected (as shown by the two-dot chain line in Fig. 4), so that the tape cassette 1 can be installed with both side edges of the cassette case 4 along the partition walls 61 and 62. Leave the holding part open. When the operator 66 is slid to the right as described above, the operator 66 is moved so that the guide bin 77 that is engaged with one of the guide grooves 74 enters the regulation groove 75 that follows the guide groove 74. The engagement position is changed, whereby the operating element 6
Since the head 7o of 6 is rotated downward, the head 70
The bottom plane 69 of the cassette push-up piece 124 pushes down the rotation U operation piece 127 of the cassette push-up piece 124 .
The tip of the operating piece 125 is raised upward. In this state, the tip of the head 7o of the operator 66 continues to push down the leaf spring 123. And again, this operator 6
6 is slid to the right as described above, the second slider 84 is slid to the left, and the notch 98 formed in the base 97 of the slider 84 engages with the lock pawl 196 of the lock plate 189. deviated from the corresponding position, the locking pawl 196 of the locking plate 189 is not formed on the side surface of the base of the slider 84, i.e., no notch is formed in which the locking pawl 196 can move through the plate surface of the slider 84. Therefore, the lock plate 189 corresponds to the current position, that is, the bin 20 erected from the lock plate 189.
0 remains engaged in the recess 168 provided in the opening/closing gear 162 and remains in a state where it cannot move. As a result, rotation of the disk portion of the opening/closing gear 162 is prevented by the bin 200 that remains engaged with the recess 168, and the opening/closing gear 162 cannot be rotated in either the loading operation direction or the unloading operation direction. become unable. As a result, the right rotating arm 275 and the left rotating arm 309 are locked in the state shown in FIG. Roller 279 and guide bin 310
is locked while being positioned at the location where the tape draw-out recess 43 of the tape cassette 1 is located. In this way, when the holding mechanism is in a state where it can load the tape cassette 1 (this state is the same as the state immediately after the tape cassette 1 is taken out from the adapter 60), the loading mechanism To automatically set a magnetic tape 5 in a state in which it can be reliably drawn out from a tape cassette 1 loaded in the tape cassette 1, and to surely prevent the loading mechanism from being erroneously operated. Further, when the second slider 84 is slid to the left, the inclined edge 102 of the release piece 101 touches the lock body 21.
6, the lock body 216 is rotated clockwise until the slider 84 returns to the right. The Q, 1jli edge of piece 101 continues to hold the protrusion 222 in that state. That means lock body 21
6, if the lock body 21
The state in which the step portion 224 of No. 6 is engaged with the inner surface of the side piece 208 of the engagement piece 207 of the switching plate 201, that is, the take-up gear 246 of the take-up idler 238 is the gear I# 148, 148 of the drive gear 144, A state in which it is engaged with ... (a state required only during unloading operation)
When the lock body 216 is locked, the stepped portion 22 of the lock body 216
4 and the inner surface of the side piece 208 of the switching plate 201, and the switching plate 201 is returned by the tensile force of its tension spring 214, whereby the winding gear 246 and the gear teeth 148, 148 of the drive gear 144, ..., and on the other hand, the operating tip 204 of the switching plate 201
The hooking pawl 179 of the stopper 175 of the clutch mechanism is meshed with the gear teeth 165, 165, . It is necessary to change the meshing state so that the opening/closing gear 162 can rotate only in the clockwise direction (loading operation direction), or if the lock body 216 In this state, the lock body 216
The stepped portion 224 is the side piece 20 of the engagement piece of the switching plate 201.
This is because even if the push button 230 is not engaged with the inner surface of the button 8, it is necessary to prevent the push button 230 from being pushed in by mistake and being set to the required state only during the above-mentioned unloading operation. In order to do this, the locking body 216 is rotated by the release piece 101 in synchronization with the tape cassette 1 being ready for installation. Note that when the rotating arms 275 and 309 are in a state other than the initial state described above, for example, in the middle of rotation, it is impossible for the holding mechanism to be in a state where the tape cassette 1 can be loaded as described above. Therefore, when the holding mechanism is set in such a state that the tape cassette l as described above can be attached, each rotating arm 275 and 30
9 are always set to the initial state described above. This is because when the rotating arm 275 is in the middle of its rotation, the opening/closing gear 162
Since the opening/closing gear 162 is pulled at a position other than its initial position, the opening/closing gear 162 is pulled into the recess 16 of the disc portion 166.
8 is pushed out to its outer peripheral surface 167, and when the bottle 2.00 is pushed out from the recess 168, the lock plate 189 is moved rearward and its lock claw! 96 is engaged within the notch 98 of the second slider 84. In this state, the second slider 84 is in a position completely shifted to the right, so each retainer 109, 110
Each of the holding pieces 117 and 118 is horizontally tilted to perform a holding operation, and the holding mechanism is not in a state where the tape cassette 1 can be attached to the holding section. When the tape cassette 1 is attached to the holding part of the cassette adapter 60, the bottom surface of the cassette case 4 of the tape cassette 1 pushes down the actuation piece 125 of the cassette push-up piece, which is raised diagonally upward. As a result, the rotating operation piece 127 of the push-up piece is pushed upward, and the upwardly pushed rotation operation piece 127 pushes up the head 70 of the operator 66. Then, the guide pin 77, which had been engaged with the regulation groove 75 of the head 70 of the operator 66, is moved from its engagement position to the lower end of the guide groove 74. As soon as this happens, the operator 66 can no longer stay still against the spring force of the leaf spring 123, which had been pushed down by the tip of the head, and the repulsive force of the leaf spring 123 causes the operator 66 to push down the tip of the head. is urged and slides to the left. By sliding the operator 66 to the left, the first slider 83 is slid to the left, and the second slider 84 is slid to the right.
18 are laid down horizontally and press both sides of the upper surface of the tape cassette 1. Incidentally, in order to more securely hold the tape cassette 1, it is preferable to slide the operator 66 to the left to the limit point. In this way, when the tape cassette 1 is attached to the cassette adapter 60, the holding operation of the tape cassette 1, or at least its initial operation, is inevitably performed simultaneously and automatically. After such a holding operation is performed, the notch 98 of the second slider 84 is placed in a position that allows the lock claw 196 of the lock plate 189 to enter. The gear 162 can now be rotated. When the tape cassette 1 is attached to the cassette adapter 60 as described above, the path of the bn magnetic tape between the tape reel 6 and the tape reel 7 of the tape cassette 1, that is, the tape bus, as shown in FIG. roller 2
79 and the outside of the bottle 310, that is, the notch 58 side. From this state, when the manual disc 264 is rotated counterclockwise, the opening/closing gear 162 is rotated clockwise.
To pull the bin 289 of the pivot arm 275 through the coupling plate, the pivot arm 275 pivots clockwise to the position shown in FIG. When the rotating arm 275 is rotated to the position shown in FIG.
The connecting link 298 is rotated clockwise, and this movement causes the second connecting link 303 and the third connecting link 30
5 to the left rotation arm 309, and causes the rotation arm 309 to rotate counterclockwise to the position shown in FIG. In this way, the left and right rotating arms 275
and 309 are rotated, the tape cassette 1
The magnetic tape 5 is pulled out by the guide rollers 279 and guide bins 310 of the rotating arms 275 and 309, respectively, and is finally in the state shown by the two-dot chain line in FIG. Note that during the above-described loading operation, the take-up gear 246 is also rotated by rotating the manual disk 264, but unless the push button 230 is pressed, the tip of the swing plate 240 remains in the state shown in FIG. and the winding gear 246
Since it is away from the drive gear 144, it is just spinning idly. If the push button 230 is pressed during this loading operation (actually, it is unthinkable to operate the push button 230 while the loading operation is being performed), the swing plate 240
45 is a side piece 208 of the engagement piece 207 of the switching plate 201
Pushed by the outer surface and rotated, the winding gear 246 meshes with the gear teeth 148, 148, .
4 changes the meshing relationship between the stoppers 174 and 175 of the clutch mechanism with the gear teeth 165 and 165 of the opening/closing gear 162, and immediately prevents the opening/closing gear 162 from rotating in the direction of the loading operation. There is never an undesirable situation in which the tape 5 is on the one hand trying to be pulled out by the pivot arm 275 and on the other hand trying to be wound up by the rotation of the tape reel which is rotated in the winding direction according to the rotation of the impeller 137. There is no possibility that such an inconvenient situation would cause the magnetic tape 5 to break. However, needless to say, if the opening/closing gear 162 is rotated counterclockwise in the above state, this is considered a normal unloading operation.
The magnetic tape 5 is wound onto the tape reel 7 (the unloading operation in such a case is to start the loading operation, then stop the loading due to some kind of jam before the loading is completed). (This is done when it is necessary.) On the other hand, when the opening/closing gear 162 is rotated clockwise as described above, the recess 1 of the disc part 166 of the opening/closing gear 162
68 is also rotated in the clock rotation direction, and the bottle 200 engaged with the recess 168 is rotated on the convex sacral surface 16 on the side opposite to the recess 168.
9 and is pushed out to a position where it comes into sliding contact with the circumferential surface 167, and as the bottle 200 is pushed out in this way, the lock plate 189 moves and its lock claw 196
is engaged with the notch 98 of the second slider 84. At this time, the second slider 84 is prevented from sliding to the left, and the holding mechanism continues to hold the tape cassette 1 by its presser pieces 117 and 118.
locked in state. The position of the magnetic tape 5 shown in FIG. 14 is the same as the initial position of the magnetic tape in the normal size tape cassette. Therefore, the 611 tape 5 of the small tape cassette 1 can be used by attaching the tape cassette 1 and the cassette adapter 60 with the magnetic tape 5 pulled out to a VTR or the like for normal size tape cassettes. When you have finished using the VTR, etc., use the cassette adapter 6.
0 from the VTR etc. and press the push button 230. By pushing this push button 230, the clutch mechanism opens and closes the opening/closing gear 1 of the stoppers 174 and 175.
The meshing relationship with the gear teeth 165, ]65, . Swing plate 24
As described above, the winding gear 246 is rotated clockwise and the gear teeth 148, 148 of the drive gear 144 are rotated clockwise.
,..., and these states are the switching plate 2
The step part 224 of the lock body 216 is engaged with the inner surface of the side piece 208 of the engagement piece 207 of 01, and the switching plate 201
The push button 230 holds the push button 230 in the pushed-out state, thereby assembling it. After doing this, when the manual disk 264 is rotated clockwise, the opening 1','j
The rotation gear 162 rotates counterclockwise and pushes the pin 289 of the rotation arm 275 by the connecting plate 290, so the rotation arm 275 rotates counterclockwise and the third
The state shown in the figure will be reached. As this rotating arm 275 rotates counterclockwise, the force applied to the connecting links 303 and 305 is removed via the first connecting link 298, so that the left rotating arm 3
09 is rotated clockwise by the force of the spring 314, and when the rotating arm 275 is in the state shown in FIG. 13, it returns to the initial position shown in FIG. 3. Simultaneously with the rotation of the rotation arm 275 in the counterclockwise direction, the take-up gear 246 is rotated via the transmission gear 255 when the manual disc 264 rotates, so that the drive gear 144
The rotation of the drive gear 144 causes the impeller 138 to rotate via the transmission gear 149, which causes the tape reel 7 to rotate clockwise, and the tape cassette 1 of the magnetic tape 5 to be rotated. The portion that has been pulled out is wound onto the tape reel 7. still,
In order to reliably wind the magnetic tape 5 into the tape cassette 1, the manual disc 264 is allowed to rotate a little extra, but the extra rotation is absorbed by the transmission gear connected via the friction plate 259. The force is absorbed by sliding between the transmission gear 255 and the stopper 258 and between the transmission gear 255 and the receiver 251, which are also connected via the friction plate 260, so that unreasonable force is not applied to the magnetic tape 5. ing. When the magnetic tape 5 is wound in this manner, the disk portion 1 of the opening/closing gear 162
Since the concave portion 168 of the disk portion 166 has been rotated to a position where the bottle 200 can be received, the bottle 200, which had been pushed out by the outer peripheral surface 167 of the disk portion 166, has been The lock plate 189 on which the bottle 200 is erected is engaged in the recess 168 by being pulled by the tensile force of the long bow spring 199, thereby causing the opening/closing gear 162 to move further counterclockwise as described above. While being prevented from being rotated, the lock pawl 196 is removed from the notch 98 of the second slider 84, allowing the slider 84 to slide to the left. Therefore, by sliding the operating lever 66 to the right, the holding pieces 117 and 118 are vertically erected to release the pressure on both sides of the upper surface of the tape cassette l, and the operating piece 125 of the cassette push-up piece 124 rotates upward and pushes up the bottom surface of the case 4 of the tape cassette 1, thereby pushing the tape cassette 1 through the opening 56 of the adapter case 53.
The tape cassette l can be easily taken out from the cassette adapter 60. Effects of the Invention As is clear from the above description, the cassette adapter of the present invention is a cassette adapter for mounting a small-sized tape cassette and using it in a recording/playback device for a larger-sized tape cassette. The cassette adapter includes a loading mechanism that performs a loading operation to pull out a tape from a tape cassette attached to a holding part of the cassette adapter and an unloading operation to rewind the tape pulled out from the tape cassette into the tape cassette, and a holding mechanism that prevents the tape cassette from falling off, and a holding mechanism that enables the loading operation of the loading mechanism to start after the tape cassette is attached to the holding section, and locks the holding state of the holding mechanism in conjunction with the start of the loading operation. Further, the present invention is characterized by comprising a locking mechanism that unlocks the holding state in conjunction with the completion of the unloading operation, so that after the small tape cassette is attached to the cassette holding portion of the cassette adapter, the tape cassette is It is equipped with a holding mechanism that prevents the tape cassette from falling out of the cassette holding part, and the loading operation of the loading mechanism cannot be started until the tape cassette is attached to the holding part, and a part of the tape is pulled out from the tape cassette. If the tape is pulled out and the tape is not wound into the tape cassette, the holding state by the holding mechanism cannot be released. Therefore, the small tape cassette can be used in a VTR, etc. for normal size tape cassettes. It is extremely suitable as a cassette adapter for.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a small tape cassette applicable to the cassette adapter of the present invention, viewed from the bottom with the cover open, and Figs. 2 to 15 show examples of implementation of the cassette adapter of the present invention. Figure 2 is a perspective view of the adapter case, Figure 3 is a plan view with the upper half removed, Figure 4 is a sectional view taken along line A-A in Figure 3, and Figure 5 shows the holding mechanism. Figure 6 is a perspective view showing the main parts of Figure 3.
7 is an exploded perspective view showing the main parts of the rotating arm rotation mechanism; FIG. 8 is an exploded perspective view showing the main parts of the magnetic tape winding mechanism pulled out of the tape cassette. 9 is a plan view showing the winding mechanism shown in FIG. 8 with some parts omitted, and FIG. 10 is a sectional view taken along line FF in FIG. 3.
Fig. 11 is a sectional view taken along line G-G in Fig. 3, Fig. 12 is a plan view of the main part showing the locking mechanism of the holding mechanism, and Fig. 13 is a main part showing the state of the rotating arm in the middle of rotation. Plan view, No. 14
The figure is a partially omitted plan view showing a state in which the two rotating arms are completely opened, and FIG. 15 is a plan view of essential parts showing the operational relationship between the first rotating arm and the first connecting link. Explanation of symbols l...Tape cassette, 5...Tape, 60.
...Cassette adapter, 66.83.84.109.110...Retention mechanism, 162.275.290.298.303.305.3
09...Loading mechanism, 84. 1 89, 98, ・Lock mechanism applicant Sony stock% formula % #Figure I2 Figure 2G Figure 13 and 4b and bδ

Claims (1)

[Claims] In a cassette adapter to which a small-sized tape cassette is attached and used in a recording/playback device for a larger-sized tape cassette, the tape is transferred from a tape cassette attached to a holding portion of the cassette adapter. a loading mechanism that performs a loading operation to pull out the tape and an unloading operation that rewinds the tape pulled out from the tape cassette into the tape cassette; a holding mechanism that prevents the tape cassette mounted on the holding section from falling off; After the attachment to the holding part, the loading operation of the loading mechanism can be started, and the holding state by the holding mechanism is locked in conjunction with the start of the loading operation, and the holding state is locked in conjunction with the completion of the unloading operation. A cassette adapter characterized by being equipped with a locking mechanism for releasing the lock.