JPH0130235B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the operation of inserting a case containing a record through the record insertion slot of a playback device, and the thick portion formed on the outer periphery of the record is
This relates to a recording disc playback device configured to take out a record from a case by clamping it with a clamping member biased in the clamping direction, and to improve the reliability of the operation of clamping the record by the clamping member. That is.

Structure of the conventional example and its problems FIGS. 1 to 3 show the structure of a record case that can be used in the playback device according to the present invention.
(hereinafter referred to as a case) and a lid 3 that is removably connected to an opening 7 provided on the front side of the case 2 in the insertion direction _X1 into the device.
The case 2 and the lid 3 are made of styrene resin, for example.

The case 2 is made by pasting together a pair of halves 4 molded with the same mold, and has a flat record storage space 5 (height is approximately equal to the thickness of the record) inside the case 2 over its entire width and length. A record 6 is stored in this space 5. This space 5 has an opening 7 on the insertion direction _X1 side, and is closed on the remaining three sides. The constituent parts of the case 2 are arranged so that the same constituent parts are located symmetrically when viewed from the direction of arrow _X1 with the center line l in the insertion direction as the center.

Each half 4 has a flat plate portion 8 having recesses 17 on the left and right sides that serve as a hinge when the opening 7 is expanded.
and protrusions 9, 10, and 11 along these three edges. Looking at the lower half 4 in Figure 1,
Windows 12 are formed on the left and right sides near the opening of the flat plate part 8, and a recess 13 is formed in the center near the opening, into which a protrusion 21 of the lid 3, which will be described later, engages. There is. Further, a pair of tapered surfaces 14 are formed symmetrically on the opening edge. This is to guide the insertion of the latching arm, which will be described later. Further, in the inner part, protrusions 15 are formed at positions shifted to the right and left from the center line l, with which the record 6 comes into contact. Furthermore, a recess 16 is provided on the inner surface near the opening of the protrusions 9 and 10, with which a protrusion 24 of the lid 3, which will be described later, engages. The half body 4 formed in this manner constitutes a case 2 which is adhered to the entire periphery or a portion of the protrusions 9, 10, 11.

At the end of the lid 3, there is a flange portion 1 that closes the opening 7 of the case 2 when the lid 3 is engaged and fixed to the case 2.
8, and symmetrically about the center line l, there is a notch 19 through which an expansion arm (to be described later) can enter, an inclined part 27 (to guide a disc clamping arm (to be described later)), and a thin wall (thinner than the glue guard of a record). A guide groove 20 having a portion 28 is formed on both sides, and a protrusion 21 that engages with the recess 13 of the case 2 is formed on the center line l.
are formed on both sides. Also, lid 3 is case 2
A sloped portion 22 and a tapered portion 23 are provided to serve as a guide when entering the recessed portion 16.
a protrusion 24 that engages with and fixes the lid 3 to the case 2;
is provided on an arm 25 that utilizes the flexibility of resin, and the distal end thereof is provided with an inclined portion 26 that engages with a release member to be described later.

FIG. 2 shows a state in which the record 6 and the lid 3 are assembled into the case 2. This state will be explained with reference to FIG. 1.
It comes into contact with and is locked in the depth direction, and is locked in the width direction by the protrusions 9 and 10. The lid 3 is
The protrusion 24 engages with the recess 16, and the protrusion 2
1 engages with the recess 13, thereby closing and coupling the opening 7.

As a result, the record 6 is defined by the circular arc portion 29 of the lid 3 also in the insertion direction _X1 , and is stored without falling out of the case 2. Note that the thickness of the portion of the lid 3 that enters the case 2 is approximately the same thickness as the storage space of the case 2, and the record 6 will not fall out of the gap.

FIG. 3 is a detailed view of the lid 3, in which the shape of the side facing the record 6 is formed, for example, by an arc with gaps b at both ends larger than gaps a in the center. This is to ensure stable operation even if the relative relationship between the lid 3 and the record 6 is slightly deviated in the direction of arrow Y during the playback operation to be described later.

Figures 4 to 17 relate to the conventional basic configuration of a playback device, with Figure 4 being a schematic configuration diagram, Figure 5 being a partially detailed diagram, Figures 6 and 7 being a plan view of the clamping mechanism, and Figure 7 being a plan view of the holding mechanism. 8 to 17 are explanatory views of the operation of the clamping mechanism.

The playback device 50 includes a mechanism 51 for expanding the opening 7 of the case 2, a turntable 52 on which the record 6 is placed, and a mechanism 53 for holding the record 6.

The case expanding mechanism 51 is located near the record case insertion opening 55 of the playback device 50, and is guided by guide rails 56 on both sides to move reversibly in the directions of arrows X ₁ and X ₂ . This expansion mechanism 51 is made up of an upper beam 57 and a lower beam 58 extending in the width direction of the playback device 50, and each beam 57, 58 moves on the guide rail 56 rotatably about axes 57a, 58a. A pair of expanding arms 59 are provided on the sliding movable body 51a. When each beam 57, 58 is located near the record case insertion opening 55, the action of the leaf spring 60 causes
As shown in FIG. 4, the expansion arms 59 are inclined so as to be close to each other and cross each other. Beam 57, 58
moves in the direction of arrow _X1 , beams 57 and 5
The roller 61 rotatably provided at the guide rail 56 rides on the tapered part formed at the end of the guide rail 56, and the beams 57 and 58 rotate so that they are horizontal, and the expansion arm 59 moves in the vertical direction. Rotate away from each other.

The record holding mechanism 53 is provided at the back of the playback device 50 and is configured to hold the record 6 stored in the record case between the clamp base 130 and fingers 131. 132 is a base fixed to the main body of the playback device. 133,13
4 is a push lever that works to push the record 6 into the case 2 together with the lid 3;
It rotates around pins 133a and 134a fixed to. Further, the tip ends of the push levers 133 and 134 are rotatably connected by a pin 135.
Reference numerals 136 and 137 denote lid hooking members, which are arranged symmetrically as in the conventional example. The clamp base 1
30 is fixed to the base 132 and has a shape that surrounds the fingers 131 and the arm 139, and holds the record together with the fingers 131. This clamp base 130, finger 1
31, the configuration and operation of arm 139 will be described in detail later. The rotating member 140 is the clamp base 130
It rotates around a pin 141 fixed to. 14
Reference numeral 2 denotes an abutment member which rotates around a pin 143 fixed to the rotation member 140 and is connected to the push lever 133 by a spring 144. spring 145
The rotating member 140 is urged to rotate in the direction of arrow A in the figure. Springs 146 and 147 are springs that bias the push levers 133 and 134 in the direction of arrow B in the figure. Reference numerals 148 and 149 are release members that engage with the sloped portion 26 of the lid 3 described above;
33 and 134, respectively. 150
is a spring that biases the fingers 131 in the clamping direction.

Figure 5 is a front view seen from the direction of arrow P in Figure 4;
FIG. 6 is a plan view of the mechanism before the record is held, and FIG. 7 is also a plan view showing the record 6 being held together with the lid 3. Reference numerals 151 and 152 are abutment members that are integrated with the push levers 133 and 134, respectively. When the record case 2 is inserted, the lid 3 comes into contact with these members, and the push levers 133 and 134 are rotated in the direction of arrow C in FIG. to charge the spring force of the springs 146 and 147. Pins 154, 155 are fixed downward to the push levers 133, 134, and these pins 154, 155 are connected to the lid latching members 136, 137.
By sliding the cam grooves 136a, 137a of the lid 3, the lid latching members 136, 137 rotate in conjunction with the push levers 133, 134, and the lid 3
to latch. Reference numerals 156 and 157 are centers of rotation of the lid latching members 136 and 137. At the same time, the release members 148 and 149 enter the left and right openings of the record case 1, and the above-mentioned inclined portions 2 of the arms 25 of the lid 3
6, the arms 25 are displaced inward, and the protrusions 24
The engagement with the recess 16 of the case 2 is released. In other words, the connection between the lid 3 and the case 2 is released.

Next, the configuration and operation of the clamp base 130, finger 131, and arm 139 will be explained with reference to FIGS. 6, 7, and 8 to 17, together with the operations of other parts of the mechanism.

FIGS. 8, 9, and 6 are side sectional views taken from the center of this mechanism, each showing three states that the mechanism can assume.

In FIG. 13, the clamp base 130, finger 131, and arm 139 are connected to pins 160 and 139, respectively.
161 and 162, and are configured to increase the clamping force. That is,
The arm 139 rotates in the direction of arrow D in the figure, and the fingers 131 move in the direction of arrow E in the figure, thereby clamping the record. The pin 162 passed through the finger 131 slides through a slide hole 163 provided in the clamp base 130. In the state shown in Fig. 8, the push lever 13
3, 134 is in the position shown in FIG. 6, and as shown in the figure, the clamp base 1 is
It is sandwiched between a rotating member 140 rotatably supported by the clamp base 130 and the clamp base 130, and restricts the movement of the rotating member 140. The rotating member 140 is biased in the direction of the arrow A in the figure by the spring 145 as described above. On the other hand, the movement of the arm 139 is regulated by the pin 164 fixed to the rotating member 140, which contacts the cut-out portion 139a provided on the arm 139, so that the arm 139 is moved in the direction of D in the figure by the spring 150. It does not move even though it is energized. In other words, in this state, the fingers 131 are restricted in the open state shown in the figure.

In FIG. 9, the push levers 133, 134 are in the positions shown in FIG. 7, and the rotating member 140 is in a rotated position as shown in the figure by the biased spring force. In this state, the restriction by the pin 143 has been released and the record 6 is being clamped, and if a force is applied to pull out the record 6 from the direction of arrow F in the figure, the clamping force increases accordingly. You can't pull out the record.

FIG. 10 shows a state in which the finger 131 is opened to the maximum, and is in this state during record playback. The push levers 133 and 134 are in the state shown in FIG.

Above, three basic states of the present clamping mechanism have been shown in FIGS. 7, 9, and 10. The actual operation is performed in conjunction with the case 2, record 6, lid 3, and expansion mechanism 51. The operation will be explained below.

FIG. 11 shows a state in which the case expanded by the expansion mechanism 51 is inserted into the main body of the playback device and immediately before it comes into contact with the main holding mechanism. The finger 131, arm 139, and rotating member 140 are in the state shown in FIG. The rotating member 140 is a pin 143
The abutting member 142, which is rotatably supported at
It is in a position where you can easily escape by rotating around 3.

Next, when the case is pushed in the direction of arrow G in the figure, the lid 3 comes into contact with the contact members 151, 152 integrated with the push lever 133, and the springs 146, 147
Push lever 1 to charge the spring force of
33, 134 and push lever 133, 13
4 changes from the state shown in FIG. 6 to the state shown in FIG. This state is seen from the side as shown in FIG. 12. Since the rotating member 140 is biased in the direction of the arrow H in the figure, it is about to rotate in the H direction, while the push lever 133 is at the position shown in the figure, so
40 is no longer regulated, so it rotates and the first
The state shown in FIG. 3 is reached, and the rotating member 140 is now regulating the push lever 133 as shown in the figure. When viewed from above, the lid 3 is latched by lid latching members 136 and 137 as shown in FIG. 7.

Next, FIG. 12 shows the state in which the empty case is removed. The rotating member 142 is rotated by the spring force of the spring 144 and is in the position shown in the stop diagram when it is in contact with the lid 3.

Next, the finger 131 is opened in the direction of arrow K in FIG. 20 by the power of a motor or the like (not shown), and at the same time, the record 6 is placed on the turntable 52 (arrow J) and played.

After playback, the record 6 rises in the direction of arrow L as shown in FIG. 16 and returns to the clamped state shown in FIG. 7.

Next, when the empty case is reinserted, the beam 57 comes into contact with the abutment member 142 as shown in FIG. Push Finger 131
At the same time, the push lever 133 is released and the cover 3 is pushed into the case 2 together with the record 6 by the push levers 133 and 134. The push lever then returns to the position shown in FIG. 11, so that the clamping mechanism returns to the state shown in FIG. 11, ie, is completely reset.

Further, the configuration and operation of the turntable 52 and other mechanisms are similar to the conventional example described in, for example, Japanese Patent Laid-Open No. 57-205853.

However, the conventional record holding mechanism 5 described above
3 has the following problems.

For example, from the state of FIG. 11 mentioned above to FIG. 12,
Furthermore, in the process of transitioning to the state shown in FIG. 13, when the case 2 is inserted together with the expansion mechanism at an extremely high speed, the cover 3 is latched and the record 6 is moved in the direction of the arrow M in FIG. 11 due to the reaction. , it bounces back together with the case 2 and the expansion mechanism. If the bouncing speed is extremely fast, the fingers 131 cannot keep up with the movement and cannot grip the thick outer circumference of the record 6, resulting in the lid 3 not being held in the gripping state shown in FIG. 13. There is a possibility that the record 6 will be taken out of the playback device together with the removed case 2. Such a phenomenon is caused by an extreme insertion operation, and if it should occur, it would damage the record 6, so it is a problem that must be solved.

OBJECTS OF THE INVENTION The present invention aims to reliably solve the above-mentioned problems in the conventional example with a simple structure and to improve the reliability of the holding operation of the record holding mechanism.

Structure of the Invention The present invention is configured so that the force for inserting the case is converted by a lever having a fulcrum, thereby speeding up the movement of the fingers that clamp the record and increasing the biasing force in the clamping direction.

DESCRIPTION OF EMBODIMENTS FIG. 18 is a plan view of a record holding mechanism according to the present invention. A lever 200 rotates around a fulcrum 201 fixed to the base 132. Lever 2
A leaf spring 202 is fixed to the pin 162, and when the leaf spring is pushed as shown by arrow V in the figure, the contact end 200a of the lever 200 contacts one end of the pin 162, causing the arrow W to move.
It is configured to push the pin 162 in the direction of.

FIG. 19 is a detailed view of the main parts of the record holding mechanism according to the present invention. The leaf spring 202 is attached at a height at which the lower beam 58 of the expansion mechanism 51 contacts when the case 2 is inserted. This 18th
As shown in FIG. 19, the finger 131 is biased in the direction of clamping the record 6 as described above by the spring 150, which is the first biasing means, and when the case is inserted. In addition to this, a leaf spring 202 serving as a second biasing means is provided.
The structure is such that the record 6 is biased in the direction in which the record 6 is held between the two.

Now, when the case 2 is inserted into the playback device having the record holding mechanism configured as described above, the leaf spring 202 is moved against the lower beam 58 in the process from the state shown in FIG. 11 to the state shown in FIG. In contact with
It is pushed in the direction of arrow V in FIG. 18 and spring force is stored. In other words, the pin 162 is strongly pushed by the lever 200 in the direction of the arrow W in the figure.
When moving from the state shown in FIG. 12 to the state shown in FIG. 13, the speed at which the finger 131 moves in the direction of arrow T in FIG. 12 increases due to the pushing force in the W direction.

According to this configuration, the force for inserting the case is converted and the biasing force of the fingers 131 in the clamping direction is increased, so the biasing force can be made considerably large, so that even in extremely fast insertion operations, the fingers Actions are responsive enough to keep up.

Effects of the Invention According to the present invention, with the simple configuration as described above,
The clamping mechanism can be used reliably even in extreme insertion operations, dramatically increasing the reliability of the playback device.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a record case that can be used in the recording disc playback device of the present invention, FIG. 2 is a perspective view of the same record case, and FIGS. A front view, a top view, and a side view of the lid of the same record case, and FIG. 4 is a partially cutaway perspective view showing the main parts of a conventional recording disc playback device.
5, 6 and 7 are respectively plan views of the same essential parts, FIGS. 8 to 17 are side views explaining the operation of the same essential parts, and FIGS. 18 and 19 are records of the present invention, respectively. FIG. 1 is a plan view of essential parts of an embodiment of a disc playback device. 1...Record case, 6...Record, 13
0...Clamp base, 131...Finger,
132...Base, 200...Lever, 202...
...plate spring.

Claims (1)

[Claims] 1 In connection with the operation of inserting a case containing records through the record insertion slot of a playback device,
The thick part formed on the outer periphery of the record is
The record is taken out from the case by being clamped by a clamping member biased in the clamping direction by a biasing means, and the record is taken out by inserting the case into a playback device. When the case is held by the holding members, the second biasing means is pushed by the force of inserting the case into the playback device, and in addition to the urging of the holding member by the first urging means, The recording disk reproducing device is further configured to be biased by the second biasing means and to increase the biasing force.