JPH082842Y2 - Disk loading device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a loading device for a disc, such as a compact disc, which is held by a pair of rollers and conveyed.

BACKGROUND ART A typical prior art is shown in FIG. 19 and its plan view is shown in FIG. When the disc 16 is manually pushed into the recording / reproducing device in the direction of the arrow 17 and reaches the position indicated by the virtual line 18, the disc 16 is detected by the optical detection element 19 and the drive roller 20 is rotationally driven. To be done. position
Disk 16 at 18 is roller 20 and another driven roller
It is clamped between 21 and 21 and transported horizontally to the upper part of Fig. 20 for loading. The rollers 20 and 21 have the same shape, and have a shape in which truncated cones having a smaller diameter toward the center are abutted. This is to prevent the roller from coming into contact with only the outer peripheral portion of the disk and coming into contact with the surface of the information recording portion of the disk to cause scratches, dust, or the like.

Problems to be solved by the device When inserting the disk, the roller is placed so that the size of the opening between the rollers 20 and 21 becomes equal to the thickness of the disk 16.
Due to the biasing force acting on 20 or 21, in the above-mentioned prior art, when the disk 16 is loaded into the recording / reproducing apparatus, the reference numeral 22 is used from the position indicated by the reference numeral 22.
The disk 16 must be manually pushed in under a biasing force for a relatively long distance C1 to the position indicated by 18, at which position the rollers 20, 21 are automatically retracted.

That is, the rollers 20 and 21 are formed so as to have a small diameter at a constant central angle from the ends to the center of the rollers 20 and 21. The height and width of the device (roller
From the dimensional viewpoint in the (20, 21) axial direction, this central angle cannot be set to a too large value.

Therefore, the rate of change in the size of the opening between the rollers 20 and 21 in the width direction becomes relatively small, and the rollers 20 and 21
From the position where the bias force acting on the roller 20 or 21 is applied to the position 18 where the bias force required for automatic insertion by the motor is applied to the disk 16 by making the size of the opening between them equal to the thickness of the disk 16. The distance C1 becomes longer.

Therefore, because of the loading of the disk 16, it is necessary to push the disk 16 by hand against the biasing force over a relatively long distance C1, so that the operability is poor. Further, since it is necessary to push the disk 16 over such a relatively long distance C1, there is a possibility that the recording surface of the disk 16 may be touched by a hand or the like to be soiled.

The object of the present invention is to shorten the distance for manually inserting the disk against the bias force acting on the roller, and to shorten the distance that the disk is automatically inserted or ejected by being clamped by the roller. It is to provide a disk loading device that does not do so.

Means for Solving the Problems The present invention relates to a disk loading apparatus for sandwiching and transporting a disk-shaped disk by a pair of rollers, in which each roller has a larger diameter at its end than in the center. At least one of the rollers has first, second, and third rollers that become smaller in diameter from both ends toward the center.
In the loading device of the disk, the circular truncated cones are continuously formed, and the central angle of the second circular truncated cone provided between the first and third circular truncated cones is selected to be larger than the others. is there.

According to the present invention, each of the pair of rollers has a larger diameter at the end portion than at the central portion, and at least one of the rollers has the first, second and third truncated cones. Since the central angle of the second truncated cone, which is continuously formed and is provided between the first and third truncated cones, is made larger than that of the remaining truncated cone, the rate of change in the opening size between both rollers is reduced to the first. It becomes larger at the truncated cone of 2. Therefore, the size of the opening between the rollers becomes equal to the thickness of the disk, and the bias force required for automatic insertion is applied to the disk from the position where the bias force acting on the roller is applied and the disk is engaged with the roller. The distance to the position can be shortened. As a result, it is possible to shorten the distance for inserting / ejecting the disc by hand against the bias force acting on the roller.
Operability can be improved.

Further, since the central angle of the outermost third circular truncated cone is set to be relatively small, the rate of change in the size of the opening in the portion of the third circular truncated cone is small, and accordingly The axial distance of the truncated cone 3 can be set long. Therefore, the distance in which the disk is sandwiched between the rollers and automatically inserted or ejected by the power of the motor or the like does not become significantly shorter than that in the conventional example.

Embodiment FIG. 1 is a simplified plan view of an entire apparatus for recording and / or reproducing the compact disc 40, and FIG. 2 is a diagram showing the embodiment of FIG. 1 in which the disc 40 is inserted. FIG. 3 is a side view showing a previous state or a state in which the disc 40 is ejected, FIG. 3 is a side view showing a state in which the disc 40 is loaded and recording / reproducing is performed, and FIG. It is a one part exploded perspective view. With reference to these drawings, the base body 41 has a pair of side portions 42, 43 and connecting portions 44, 45 for connecting the side portions 42, 43. At the ends of the side portions 42, 43, mounting pieces 46, 47; 48, 49 are formed by being bent outward, and these mounting pieces 46, 47; 48, 49 are used for recording / recording.
It is fixed to the chassis of the playback device. A guide member 51 is arranged on the outer peripheral wall of the one side portion 42 of the base body 41, that is, on the peripheral wall opposite to the other side portion 43. This guide member 50 is
It has a first cam 51 and a second cam 52, and further has a guide elongated hole 53.
Have. The first cam 51, the second cam 52, and the guide elongated hole 53 extend along the inserting direction 54 of the disc 40 (see FIGS. 1 and 2). The guide pin 55 formed on the side portion 42 is inserted into the guide slot 53. A rack 56 is formed in the lower part of the guide member 50, and the rack 56 has a pinion 57.
Mesh with each other. A gear 58 is integrally fixed to the pinion 57, and the gear 58 is rotationally driven in the forward and reverse directions by a power source including a motor 210. The guide member 50 also has a guide slot 53.
Is formed in parallel with the guide long hole 59, the guide long hole 59,
The guide pin 60 fixed to the side portion 42 is inserted. In this way, the guide member 50 can be displaced back and forth in the insertion direction 54.

The first cam 51 has three cam surfaces 61, 62, 63,
61 is higher than the cam surface 63 on the downstream side in the insertion direction 54. The cam surface 62 is inclined so as to connect the cam surfaces 61 and 63.

The second cam 52 has cam surfaces 64, 65, 66 corresponding to the cam surfaces 61, 62, 63 of the first cam 51, respectively, and the cam surfaces 67, 68, 69.
Have. The cam surfaces 67-69 face the cam surfaces 64-66. These cam surfaces 64-66 and 67-69 are attached to the disk 40.
The position is higher toward the downstream side in the insertion direction 54 of. A relatively large vertical gap 1 is formed on the cam surface 63 of the first cam 51, which serves to absorb a machining error of the component parts and to enable smooth movement. In addition, the distance l2 between the cam surfaces 64 and 67 of the second cam 52 is relatively large, which allows the disk 40 to be loaded with such a thick disk 40 even if the disk 40 has a relatively thick structure as described later. To enable.

The support member 71 includes a pair of side portions 72, 73 and the side portions 72, 73.
And a connecting portion 74 for connecting 73. Pins 77, 78 projecting from the inner peripheral walls of the side portions 42, 43 of the base body 41 are inserted into the insertion holes 75, 76 formed in the side portions 72, 73, respectively. Angular displacement is possible around the axis of pins 77 and 78. The pin 79 protruding from the side portion 72 is inserted into a relatively large through hole 80 formed in the side portion 42, whereby a support member is formed.
The above-mentioned angular displacement of 71 is allowed, and the angular displacement amount is limited.

On the side opposite to the pin 79 with respect to the insertion holes 75 and 76 of the side portions 72 and 73,
That is, locking projections 81 and 82 are formed on the upstream side in the insertion direction 54, and both ends of the springs 83 and 84 are locked to the locking projections 81 and 82. The other ends of the springs 83 and 84 are locked to locking protrusions 85 and 86 formed on the side portion 43 of the base 41. The axes of the insertion holes 75, 76, and thus the pins 77, 78, are on a straight line perpendicular to the insertion direction 54. Due to the action of the spring 84, the support member 71 is
The elastic rotational force of arrow 87 is applied around the axes of 77 and 78.

Rotation axis of roller 88 for inserting and ejecting disk 40
89 and 90 are insertion holes 91 and 92 formed in the side portions 42 and 43 of the base 41.
Is rotatably inserted into. A gear 93 is fixed to the end of the roller 88. The gear 93 is driven by a drive source including a gear meshing with the gear 93, a motor, and the like so as to be freely rotatable in the forward and reverse directions. The rotating shafts 95, 96 of the other roller 94 arranged below the roller 88 are rotatably inserted into the through holes 97, 98 formed in the side portions 72, 73 of the support member 71. Laura 88,
The axes of rotation of 94 are parallel and perpendicular to the insertion direction 54.
The insertion holes 97, 98 that support the rotation shafts 95, 96 of the roller 94 are on the opposite side of the springs 83, 84 with respect to the insertion holes 75, 76 of the side portions 72, 73 of the support member 71. Therefore, by the action of the springs 83 and 84, the roller 94 is elastically biased against the roller 88. roller
88 is made of elastic material such as rubber, and the roller 94 is made of somewhat elastic material such as polyacetal resin.

The connecting portion 74 of the support member 71 has a front portion 74a that functions to guide the lower surface of the disc 40 when the disc 40 is initially inserted or discharged, and a rear portion 74b that is connected to the front portion 74a and is bent downward. .

The first swinging member 100 is associated with the base body 41. The first swinging member 100 includes support portions 101 and 102, a connection portion 103 that connects the support portions 101 and 102, and arms 104 and 105 that extend from the connection portion 103 to the upstream side in the insertion direction 54. The insertion holes 106 and 107 of the supporting portions 101 and 102 are the side portions of the base 41.
The pin 107 projecting inward from the side 42 and the pin 108 projecting outward from the side part 43 are respectively inserted, whereby the first swinging member 100 can swing.

FIG. 5 shows another second rocking member 109. The second swinging member 109 also has support portions 110 and 111, and a connecting portion 112 that connects them, similarly to the first swinging member 100.
Arms 113 and 114 extending upstream in the insertion direction 54 are provided. A pin 115 protruding from the support portion 110 of the second swing member 109.
Is loosely inserted into the insertion hole 116 formed in the side portion 42 of the base body 41, whereby the swing of the second swing member 109 is allowed and the swing range thereof is limited. Second swing member 10
The respective insertion holes 117, 118 formed in 9 are supported by pins 119, 120 protruding from the side portions 42, 43 so as to be angularly displaced. Support portions 101,1 of the first and second swing members 100,109
Pins 121 and 122 are provided on the inwardly projecting member 10, respectively.
These pins 121 and 122 are connected by a connecting portion 123.

FIG. 6 is an exploded perspective view of the connecting means 124 including the connecting member 123. The connecting member 123 is a pair of L-shaped brackets 1.
25, 126, coiled compression spring 127, bolt 128, U
And a V-shaped spring 129. The bracket 125 has a pivot 130
And a protrusion 131. The pin 122 is inserted into the insertion hole 132 of the pivot portion 130. An inner screw hole 133 is inserted into the protrusion 131 and is engraved. Another bracket 126 is also
Similarly, it has a pivot part 134 and a protrusion part 135. Pivotal branch 13
The pin 121 is inserted into the insertion hole 136 of 4. An insertion hole 137 is formed in the protrusion 135. A spring 127 is interposed between the protrusions 131 and 135. The bolt 128 is gently inserted through the insertion hole 137 and further gently inserted through the spring 127.
Screw into.

At both ends of the U-shaped spring 129, locking portions 138 and 139 that are bent so as to open in the mutually separating direction are formed. These locking portions 138, 139 are locking grooves 140, 14 of small diameters of the pins 121, 122.
Lock to 1. The spring 129 urges the locking portions 138, 139, and thus the pins 121, 122, in a direction away from each other. The spring 127 through which the above-mentioned bolt 128 is inserted is a bracket 125,
The 126 is spring-biased in the direction away from each other.

FIG. 7 is a cross-sectional view near the pin 121. The end portion 138 of the spring 129 is locked to the locking portion 140 of the pin 121, and the bracket 125
Prevents the pivotal support 130 from disengaging from the pin 121. The other pin 122 has the same configuration.

FIG. 8 shows the insertion holes for the pins 121 and 122 and the brackets 125 and 126.
FIG. 13 is a simplified cross-sectional view showing a relationship with 132 and 136. Spring 1
Due to the spring force of 27, the brackets 125 and 126 are spring-biased in the direction away from each other, so that the inner peripheral surfaces of the insertion holes 132 and 136 are in contact with the surfaces of the pins 121 and 122 in the direction of mutual proximity.

By selecting the spring force of the spring 127 to be a value sufficiently larger than the force required for the displacement of the first and second rocking members 100,109, the contact state between the pins 121,122 and the insertion holes 132,136 remains as shown in FIG. To be kept. Therefore, the first and second rocking members
It is possible to prevent rattling at the angular displacement positions of 100 and 109, and to integrally work together without causing a delay in operation. As a result, the first and second rocking members 100, 109
It enables simultaneous and smooth angular displacement.

FIG. 9 is a side view in which the side portion 42 of the base body 41 is seen through.
The distance s1 between the pins 121 and 122 is equal to the distance s2 between the pins 107 and 119 (s1 = s2). In this way, a parallelogram link is constructed. By the bolt 128 of the connecting member 123, the distance s1 between the pins 121 and 122 can be finely adjusted to be equal to the above-mentioned distance s2.

FIG. 10 is a side view of the guide member 143. The guide member 143 is made of a synthetic resin material and has ridge lines 144 and 145 with which the lower outer peripheral edge of the disk 40 contacts. This ridge 144 forms an angle θ1 with the horizontal bottom surface 146 of about 45 degrees. This ridgeline 1
The ridge line 145 extending from 44 to the downstream side in the insertion direction 54 makes an angle θ2 smaller than the angle θ1 with respect to the horizontal bottom surface 146. The ridgelines 144, 145 of the guide member 143 are in a common plane perpendicular to the horizontal plane, and these ridgelines 144, 145 incline toward the center toward the downstream side of the guide path of the disc 40 in the insertion direction 54. The guide member 143 has a mounting piece 147 on the downstream side in the insertion direction 54, and an insertion hole 149 into which the bolt 148 is inserted is formed in the mounting piece 147. Bolt 148 is an insertion hole
149 is inserted and screwed into the inner screw hole 151 of the mounting base 150 that is bent inward on the upstream side in the insertion direction 54 in the support portion 110 of the second swing member 109. In this way, the guide member is attached to the mounting base 150.
143 is fixed. Another supporting portion of the second swinging member 109
The guide member 153 is also fixed to the mount 152 at 111. This guide member 153 is symmetrical to the guide member 143 with respect to the central line 154 of the guide path of the disc 40 which is parallel to the insertion direction 54.

The angle .theta.1 of the ridge 144 is selected to be relatively large as described above, which allows the disk 155 to be inserted even when the tip of the disk 40 is inserted downward, for example, as shown by reference numeral 155 in FIG. Is displaced upward along the insertion direction 54, and can be inserted horizontally and held between the rollers 88, 94.

The angle θ2 of the ridge line 145 following this ridge line 144 is selected to be relatively small. When the disk is inserted almost horizontally as at reference numeral 156, or when the disk is inserted downward and as at reference numeral 155, it is straightened by the ridge 144 as shown at reference numeral 156. When guided, insert the disk 40 in the insertion direction 54 and immediately
It will be possible to guide 40. As a result, the disk 40 can be held by the rollers 88 and 94 in a correct horizontal position. Also, the disk 40 is the turntable 157.
The second swinging member 109 is displaced downward in the state of being mounted on the upper side, and at this time, the ridge line 145 separates from the disc 40 on the turntable 157. Due to the small angle θ2, the guide member 143 is displaced slightly downward, so that the ridge line 145 is separated from the lower outer peripheral edge of the disk 40 on the turntable 157.

FIG. 11 is a vertical sectional view of the rollers 88 and 94, and FIG. 12 is a simplified plan view of the rollers 88 and 94. Laura 8
8, 94 are configured symmetrically with respect to a vertical plane passing through the center line 154, and the vicinity of the ends of the rollers 88, 94 are enlarged and shown in FIG. The roller 88 has first, second, and third truncated cones 158, 159, in order from the center line 154 toward the end.
160 are formed in this order. The central angles α1, α2, α3 of the truncated cones 158, 159, 160 are set to α1 <α3 <α2. The roller 94 moves from the center line 154 to the end of the truncated cone 16
Has 1,162. The central angles β1, β2 of the truncated cones 161, 162 are β
It is set to 1 <β2. Thus, when the disk 40 is guided by the guide members 143 and 153 in a substantially horizontal state, it is sandwiched between the truncated cones 160 and 162 as indicated by reference numeral 163. This condition is also indicated by reference numeral 163 in FIG. The optical detection element 164 detects the disk 40 and drives the drive source to rotationally drive the gear 93, and thus the roller 88, whereby the disk 4 in the state of reference numeral 163 is driven.
0 is automatically conveyed to the downstream side in the insertion direction, that is, to the upper side in FIG. For example, the disk 40 tilts upward and
Even when the disk 144 is inserted in the insertion direction 54 in a state of contacting the truncated cone 158 as shown by reference numeral 166, the upper outer peripheral edge of the disk 144 contacts the truncated cone 158 to the truncated cone 159, and the truncated cone 160 and the truncated cone 160. It will be held between 162. The state of the disk 40 at the completion of loading is indicated by reference numeral 212 in FIG.
This state is detected by the detection element 211.

By setting the angles α2 and β2 to be larger than the angles α1 and β1 near the center, the disk 40 is moved by a small distance C2 from the initial position 165 to the position indicated by reference numeral 163 as shown in FIG. The roller 88 is driven by being manually pushed against the bias force that acts on the roller 88, and is nipped by the rollers 88 and 94 and automatically pulled in. In this way, since the distance by which the disk is manually pushed against the bias force acting on the roller is short, the operability is improved. When the disc 40 is ejected, the roller 88 is rotationally driven in the ejection direction of the disc 40 until the disc 40 is no longer detected by the detection element 164, and the protrusion amount of the disc 40 is relatively small. Therefore, it is possible to prevent the hand from coming into contact with the disk to be contaminated, dust from adhering, and the disk 40 from being accidentally dropped. The roller 94 may have the same structure as the roller 88.

FIG. 14 is a simplified diagram for explaining the operation related to the guide member 50. When the disk 40 is inserted from the initial position 165 in FIG. 12 as indicated by reference numeral 163,
The detection element 164 detects the disk 40, which drives the roller 88. Next, when it is detected by the detection element 211 (see FIG. 12) that the disk 40 has been pulled up onto the turntable 157 by driving the roller 88, the gear 58 is detected.
Are driven, so that the guide member 50 moves in the insertion direction 54. The pin 79 of the support member 71 is guided from the cam surface 67 of the second cam 52 to the cam surfaces 68, 69 and 70, and the roller 94 descends. The pin 115 of the second swing member 109 moves from the cam surface 61 of the first cam 51 to the cam surfaces 62, 63, and accordingly, the second swing member 109 moves to the twelfth axis about the axis of the pin 119. It is displaced counterclockwise in the figure. Therefore, the insertion direction 54 of the second swinging member 109
The holding means 168 provided on the upstream side descends. When the disk 40 comes directly above the turntable 157, the holding means 168 moves the compact disk 40 to the turntable 157.
Hold it up. The guide member 143 is displaced further downward than the disk 40 on the turntable 157, and the guide member 143 and the disk 40 on the turntable 157 are separated from each other. This also applies to the other guide member 153. In this state, the disk 40 is driven by the turntable 157 and recorded / recorded by the pickup 169 (see FIG. 4).
Playback is performed.

When ejecting the disc 40 on the turntable 157, the gear 58 is driven by the drive source so that the disc 40 moves in the direction opposite to the insertion direction 54. As a result, the pin 79 reaches the cam surface 67 from the cam surface 70 via the cam surfaces 69 and 68. At the same time, the pin 115 reaches the cam surface 61 from the cam surface 63 through the cam surface 62. In this way, the disc 40 is displaced upward from the turntable 157, and is ejected in the direction opposite to the insertion direction 54 by driving the roller 88. The drive of the roller 88 is
This continues until the disk 40 is no longer detected by the detection element 164.

In this way, when inserting the disk 40, first move horizontally, then descend to the turntable 157,
When discharging 0, the disk 40 is displaced upward from the turntable 157 and then horizontally moved. In this way, the disc 40 can be reliably mounted on the turntable 157, and it is possible to avoid the disc 40 from undesirably colliding with other components and being damaged during insertion and ejection.

FIG. 15 is a plan view of the holding means 168, and FIG. 16 is a state in which the holding means 168 is free, that is, the disk 40.
FIG. 17 is a sectional view showing a state in which the disk 40 is not pressed against the turntable 157, and FIG. 17 is a sectional view showing a state in which the disk 40 is pressed onto the turntable 157 by the holding means 168, and FIG. FIG. 9 is an exploded perspective view of holding means 168. In the holding means 168, a support member 170 made of a synthetic resin material
The pin 171 engages with the notch 173 formed in the arm 104 of the first swing member 100. The pin 172 provided on the upstream side in the insertion direction 54 of the support member 170 is an arm of the second swing member 109.
It is inserted into an insertion hole 174 formed in 113. Similarly, the pins 175 and 176 formed on the support member 170 are also supported by the notch 177 of the arm 105 and the insertion hole 178 of the arm 114.
The axes of pins 171,175 are aligned, and pins 172,176 are
The axis of is on the other axis, pins 171,175 and pin 1
72 and 176 are parallel to each other. The pressing portion 181 of the clamper 180 made of a synthetic resin material is gently fitted into the opening 179 formed in the support member 170. The outward flange 182 of the clamper 180 is mounted on the seat 183 of the opening 179. The clamper 180 has a projection 1 that is a spherical surface that is coaxially convex upward.
84 is formed. In the cover 185, an abutment piece 186 having an axis on a straight line common to the axis of the turntable 157 is attached in the mounting hole 1
Fixed at 87. The contact piece 186 has a flat surface that contacts the protrusion 184, and the flat surface 186 is perpendicular to the axis of the turntable 157. The internal screw holes 188, 189, 190 formed in the cover 185 are inserted into the insertion holes 191, 192, 193 of the support member 170.
The screws 194, 195, and 196 for loosely inserting are screwed together, and thus the flange 182 of the clamper 180 is rotatably housed between the receiving seat 183 and the cover 185 with the pressing portion 181 inserted in the opening 179.

A generally U-shaped leaf spring 197 is formed with an insertion hole 198 into which a bolt 199 is inserted, and the bolt 199 is a connecting portion of the base 41.
The leaf spring 197 is fixed to the connecting portion 45 by being screwed into the screw hole 200 formed in 45. Leaf spring 197 leg 20
The 1,202 can contact the top surface of the clamper 180, as indicated by reference numerals 203,204.

Referring again to FIG. 9, the distance s3 between pins 119 and 172 is pin 1
Equal to the distance s4 between 21,171 (s3 = s4). In this way, a parallelogram link is constructed. The distance between the pins 171 and 172 is chosen equal to the distance S1 mentioned above. Therefore, when the first and second rocking members 100 and 109 are angularly displaced, the holding means 1
The 68 clamper 180 can be lifted and lowered while keeping its axis vertical, and the disk 40 on the turntable 157
The surface can be pressed by the pressing portion 181 of the clamper 180 as shown in FIG. At this time, the leg portion 2 of the leaf spring 197
01 and 202 are located above the positions of the clamper 180 indicated by reference numerals 203 and 204, and the leaf spring 197 is separated from the clamper 180. The protrusion 184 of the clamper 180 contacts the contact piece 186, and the save 181 of the clamper 180 causes the disk 40 to move by the downward bias force of the compression spring 127 (see FIG. 6) acting on the second swing member 109. Press and rotate with disk 40.

In the state where the disk 40 is not loaded on the turntable 157, the holding means 168 is above the turntable 157, and at this time, the legs 201 and 202 of the spring 197 cover the upper surface of the clamper 180 as shown in FIG. The spring is biased downward at the positions indicated by reference numerals 203 and 204. Therefore, the flange 182 comes into contact with the receiving seat 183 of the supporting member 170. As a result, the clamper 180 is not undesirably displaced by external vibration or the like, no abnormal noise is generated, and so-called chattering can be prevented.

In the present invention, the central angle α2 of the second truncated cone 159 is made larger than α1 and α3, and even if the central angle α3 of the outermost third truncated cone 160 is made relatively small, the rollers can be made smaller. The distance for inserting the disc 40 by hand can be shortened against the bias force acting on 94.

Therefore, the distance that the disc 40 is sandwiched between the rollers 88 and 94 and automatically retracted can be set to be as long as the conventional one.

That is, even if the central angle α3 of the third truncated cone 160 is made larger than the central angles α1 and α2 of the other truncated cones, the distance for manually inserting the disc 40 against the bias force acting on the roller 94 is shortened. Yes, but with this, the central angle α of the third truncated cone 160
Since 3 is large, it is not possible to increase the axial length of the third truncated cone 160, so that the distance by which the disc 40 is sandwiched between both rollers 88 and 94 and automatically retracted becomes short, and it is possible to manually pull it. The distance that the disc 40 must be inserted increases.

 The present invention solves such a problem.

The present invention relates to a loading device that conveys the disk 40 by sandwiching it with a pair of rollers 88 and 94, and other configurations are merely examples in which the present invention is implemented. INDUSTRIAL APPLICABILITY The present invention can be widely implemented, for example, for reproducing a compact disk reproducing device having another structure and a disk having another structure.

Effect As described above, according to the present invention, the operability is improved because the disk is automatically retracted by moving the disk by a relatively small distance against the bias force acting on the roller. To be done.

Further, by making the central angle of the second truncated cone larger than the others, the largest truncated cone (the outermost truncated cone: the third cone
Even if the central angle of the truncated cone is relatively small, the distance to insert the disk by hand can be shortened against the bias force acting on the roller, so the disk is pinched by both rollers and automatically driven by the power of the motor etc. The distance to be pulled in can be set as long as before.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a side view showing a state in which the disc 40 of the embodiment is not inserted, and FIG. 3 is a side view showing a state in which the disc is mounted. 4 is an exploded perspective view of a part of this embodiment, FIG. 5 is an exploded perspective view of the first and second rocking members 100 and 109 and their vicinity, FIG. 6 is an exploded perspective view of the connecting means 124, and FIG. Is a cross-sectional view near the pin 121, FIG. 8 is an enlarged cross-sectional view near the pins 121 and 122, and FIG. 9 is a simplified side view of the first and second rocking members 100 and 109.
FIG. 10 is a side view of the guide member 143, FIG. 11 is a sectional view of the rollers 88 and 94, and FIG. 12 is a simplified plan view of the rollers 88 and 94.
FIG. 3 is an enlarged cross-sectional view near the ends of the rollers 88 and 94, FIG. 14 is a simplified side view of the guide member 50 and its vicinity, FIG. 15 is a plan view of the holding means 168, and FIG. 16 is holding means. 168 is a sectional view showing a state in which the disk 40 is not held by the 168, FIG. 17 is a sectional view showing a state in which the disk 40 is held by the holding means 68, and FIG. 18 is an exploded perspective view of the holding means 168. FIG. 19 is a sectional view of the prior art, and FIG. 20 is a simplified plan view of the prior art shown in FIG. 41 ... Base, 42, 43 ... Abdomen, 44, 45 ... Connection, 50 ...
Guide member, 51 …… first cam, 52 …… second cam, 53,59
...... Guide long hole, 56 …… Luck, 71 …… Support member, 83,84
...... Spring, 88,94 …… Roller, 100 …… First swing member, 10
9 ... second swing member, 124 ... connecting means, 123 ... connecting member, 125, 126 ... bracket, 127 ... spring, 128 ... bolt, 129 ... U-shaped spring, 143, 153 ... guide member, 144,
145 ridgeline, 15153 ...... guide member 144,145 ridgeline, 15
8,159,160,161,162 …… Frustum, 168 …… Holding means, 170
…… Supporting member, 180 …… Clamper, 185 …… Cover, 197
...... Leaf spring

Claims (1)

[Scope of utility model registration request] 1. A loading device for a disk, wherein a disk-shaped disk is sandwiched and conveyed by a pair of rollers, wherein each roller has a larger diameter at its end portion than at its central portion, and at least one of these rollers is provided. Is a second truncated cone provided between the first and third truncated cones, which are formed by continuously forming first, second and third truncated cones whose diameters decrease from both ends toward the central portion. The disk loading device is characterized in that the central angle of is selected larger than the others.