JPS6227465B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a front cover lock release mechanism for a disc-shaped recording medium storage container, and the storage container containing the disc-shaped recording medium is inserted into a playback device when playing the disc-shaped recording medium. When the disc-shaped recording medium and the front cover are removed from the storage container main body, the arm that presses the engagement arm of the front cover inward is rotated to release the engagement between the front cover and the storage container main body. By being configured to be movable, when the storage container main body is removed from the playback device, the elastic force of the engaging arm itself forces the arm to reversely rotate outward, and the engaging arm itself also returns to its natural state. Since the engaging arm is not bent during playback of a disk-shaped recording medium, even if the temperature inside the playback device becomes high during playback, the elasticity of the engaging arm will not deteriorate and the disk-shaped recording medium will not be bent. It is an object of the present invention to provide a front cover lock release mechanism for a disc-shaped recording medium storage container, which has extremely high durability in locking the main body of the storage medium storage container and the front lid.

The present applicant previously filed an application for a disc-shaped recording medium reproducing device equipped with a lid-case body coupling/uncoupling mechanism.

The details of this disk-shaped recording medium playback device are as shown in FIGS. 1 to 4. For example, a disk storage case 1 includes a case body 3 made of resin for storing a disk 2 such as a video disk, and a case body 3. It consists of an arcuate lid 4 that closes an opening 3a. The case body 3 has a structure in which an upper plate 3b and a lower plate 3c are provided facing each other at a distance, and has a flat space for storing a disk.

As shown in FIGS. 2 and 3, the lid 4 has engaging arms 6a and 6b extending in the direction of arrow _X1 on the left and right sides. Convex claw portions 6 _a-1 of each engaging arm 6 a, 6 b,
6 _b-1 is the recess 7a, 7 on the left and right ends of the case body 3
The lid 4 is removably connected to the case body 3 by being engaged in the inside of the case body 3.

The disk playback device 10 includes a case diffusion mechanism 11 that diffuses the opening of the case body 3, and a disk 2.
Mechanism 12 for clamping the outer groove guard of
a, 12b, and a mechanism 13a for latching the lid 4.
13b and lid-case body coupling/uncoupling mechanism 1
4a and 14b are arranged symmetrically in the inner part.

When playing a disc, the disc 2 is mounted on a turntable 15 in a playback device 10. The disk device is operated by an operator inserting the case 1 from the lid side through the insertion opening 16 into the playback device 10 to the back thereof, and then pulling it out. That is, the case 1 is inserted along the guide rails 28a, 28b with the left and right ends supported by the sliders 16a, 16b with the opening side of the case body 3 expanded by the case expansion mechanism 11. When the case 1 is inserted deep into the playback device 10, as shown in FIG. The lid 4 is clamped by the case body 12b, and further the lid 4 is uncoupled from the case body 3 by the lid-case body coupling/uncoupling mechanisms 14a and 14b.

That is, when the case 1 is inserted deep into the playback device 10, the clamp arms of the clamp mechanisms 12a and 12b relatively climb over the lid 4 and close the disc 2.
is clamped, and the front end of the lid 4 in the insertion direction pushes the locking arms 17a, 17b to rotate the support plates 18a, 18b counterclockwise and clockwise about the shafts 19a, 19b, respectively. The support plates 18a and 18b are
The support plates 18a and 18 are rotated in conjunction with each other, and the push switch is pushed and the support plates 18a and 18 are inserted into the notch 26' of the latch plate 26.
The latch is latched at the final rotational position (indicated by the two-dot chain line in FIG. 3) by being engaged by the protrusion 18c of b.
The mechanisms 13a, 13b, 14a, 14b operate by the rotation of the support plates 18a, 18b.
By rotating the support plates 18a and 18b, the U-shaped latching members 20a and 20b are attached to the cam portion 2 of the lower arm.
0 _a-1 and 20 _b-1 are guided by fixing pins 21 a and 21 b, and pins 22 a and 22 b (support plates 18 a and 20 b-1, respectively) are guided by fixed pins 21 a and 21 b.
18b) in the clockwise and counterclockwise directions. As a result, the hook-shaped arm portions 20 _a-2 on the upper side of the latching members 20 a, 20 b,
20 _b-2 (which has already relatively entered into the L-shaped notches 5a and 5b of the lid 4) is the L-shaped notch 5 of the lid 4
Hook a and 5b. The lid 4 has a hook-shaped arm portion 2
0 _a-2 , 20 _b-2 , supporting arm 2
3a and 23b and held in the inner part of the playback device 10.

In addition, the lid-case body coupling/uncoupling mechanism 14
a and 14b operate as described below, and the coupling of the lid 4 to the case body 3 is released.

As a result, when the case body 3 is pulled out, the lid 4
remains latched and held, and only the case body 3 is pulled out in the direction of arrow _X2 . When the case body 3 is pulled out of the apparatus, the outer groove guard 2a of the disk 2 is clamped by the clamp mechanisms 12a, 12b, and the center hole 2b is supported by the support ring 24 in the raised position, so that the disk 2 is attached to the turntable 15. Supported in upper position. Thereafter, by a play operation, the clamp mechanisms 12a and 12b release the clamps, the support ring 24 descends, and the disk 2 is placed on the turntable 15 and is mounted by clamping the central hole portion. The disk 2 is rotated integrally with the turntable 15 by a motor and is played by a pickup mechanism 25 that moves in the direction of arrow _Y1 .

When the stop operation is performed, the disk 2 stops rotating, and contrary to the above case, the support ring 24 rises, the clamp mechanism 12 operates, and the disk 2 is supported at a position above the turntable 15.

In this state, when the empty case body 3 is inserted deep into the device, the case body 3 presses the lid 4,
This pressure presses the locking arms 17a, 17b, so the support plates 18a, 18b rotate, and this rotation activates the push switch, causing the protrusions 18c and notches 26' of the support plates 18a, 18b to rotate. Since the latch is released, the latch by the latch plate 26 is released, and the support plates 18a and 18b are rotated back clockwise and counterclockwise by the spring force of the tension coil spring 27. By this rotational return, the lid 4 is released from the latching by the lid latching mechanisms 13a, 13b and is moved by the latching arms 17a, 17b as shown in the arrows.
It is pushed back in the _X2 direction, and the lid 4 is further coupled to the case body 3 as described later.

As a result, the disc 2 is collected into the case body 3 and removed from the playback device 10.

Next, the lid-case body coupling/uncoupling mechanism 14
a, 14b and the configuration and operation of the case related thereto will be explained with reference to FIGS. 3 and 4.

The mechanisms 14a and 14b are provided symmetrically on the left and right ends of the inner part of the playback device 10, and have rotating arms 31a and 31b held in U-shaped holders 30a and 30b. U-shaped holder 30
a and 30b are fixed to the rear wall 32 of the device 10. Rotating arms 31a, 31b are pins 33a, 3
3b and is supported within the holders 30a, 30b, and a pair of pins 34a, 34b, 35
It is designed to be rotatable between a and 35b. Also,
The rotating arms 31a, 31b have arm portions 31a _-1 , 31b _-1 extending in the direction of arrow _X2 , and arm portions 31a _-2 , 31b _-2 extending laterally.

Reference numerals 36a and 36b are locking pins, which are installed at predetermined positions in the support plates 18a and 18b, respectively.
The arm portions 31 _a-2 and 31 _b-2 are spaced apart from each other.

In the state before inserting the case, the rotating arm 31
a and 31b are in the rotational position shown in FIG. 1 (the position shown by the solid line in FIG. 3).

When installing the disc, case 1 is connected to playback device 1.
0, the support plate 18a rotates counterclockwise as the locking arm 17a is pushed by the lid 4, and the mechanism 14a and the case side gradually reach the state shown by the dashed line in Figure 3. , the state is shown by the two-dot solid line,
Between these two states, the state shown in FIG. 4 is taken.

The rotating arm 31a does not rotate and remains at its original position while the locking pin 36a moves to the position indicated by the dashed line. At this time, the case 1 is in a position where the tip inclined portion 6 _a-2 of the engaging arm 6 a can be locked by the rotation of the rotating arm 31 a. During the final movement of the locking pin 36a from the position shown by the one-dot chain line to the position shown by the two-dot chain line, the arm part 31a _-2 is pushed to rotate the rotating arm 31a counterclockwise. By the rotation of the rotating arm 31a, the arm portion 31a _-1 locks the tip inclined portion 6a _-2 of the engagement arm 6a that moves in the direction of arrow _X1 , and forcibly displaces it in the direction of arrow _Y2 . , convex portion 6 _a-
1 separates from the recess 7a. Right mechanism 14b
This also operates in the same manner as the mechanism 14a described above.

Thereby, as shown in FIG. 2 and as shown by the two-dot chain line in FIG. 3, the connection of the lid 4 to the case body 3 is released.

When recovering the disc, when the empty case body 3 is inserted all the way into the playback device 10, the latch plate 2
6 is released and the support plate 18a is released by the spring 27.
Due to the pulling force, the lid 4 is rotated back clockwise, and the lid 4 is pushed back in the direction of arrow _X2 by the locking arm 17a.

Here, due to the operation of the support plate 18a at an early stage during the rotation return operation, the rotation arm 31a is released from the locking by the locking pin 36a and becomes a free state, and the lid 4 is combined with the case body 3. Ru.

Note that when the lid 4 is latched to the back of the playback device, the engaging arm 6a is elastically deformed in the direction of arrow _Y2 , and the rotating arm 31a is rotated clockwise due to the elastic force of the engaging arm 6a. It is in a powered state.

That is, in the initial rotation return operation of the support plate 18a, the locking pin 36a moves from the position shown by the two-dot chain line to the position shown by the one-dot chain line. At this stage, the engaging arm 6a pushes back the rotating arm 31a and moves back in the direction of arrow _Y1 , the protrusion 6a _-1 fits into the recess 7a, and the lid 4 is coupled to the case body 3. In other words, as long as the initial stage of the rotational return operation of the support plate 18a by the spring 27 follows the case withdrawal operation, the lid 4 will be coupled to the case body 3.

Here, when performing a pulling operation after inserting the case body 3, the pulling speed at the initial stage is not so fast because the operating direction has been changed. On the other hand, the rotation return speed of the support plate 18a can be made sufficiently higher than the initial withdrawal speed by appropriately determining the spring constant of the spring 27. Therefore, even if the case body 3 is quickly inserted or pulled out,
The lid 4 is reliably connected to the case body 3 and pulled out of the apparatus, so that the disk can be removed and recovered reliably.

The mechanism 14b on the right side is also similar to the mechanism 14 described above.
It operates in the same way as a.

Note that, as shown in FIG. 4, the rotating arm 31a
By tensioning a tension coil spring 37 between the and support plate 18a, and further incorporating a compression coil spring 38 into the lid 4 to return the engaging arm 6a, the rotating arm 31a can reliably follow the support plate 18a. The engaging arm 6a is displaced in the direction of arrow _Y1 by the elastic force of the compression coil spring 38, and the lid 4 is more firmly connected to the case body 3. It will definitely be done.

However, as can be seen from FIGS. 3 and 4, in the disc playback device as described above, the engaging arm of the lid is always pressed inward during playback of the disc. During regeneration, the inside of the regeneration device reaches a high temperature of about 40 degrees Celsius, so if the engaging arm is left bent, the springiness of the engaging arm will deteriorate and the regeneration will be delayed. Even if the disk and lid are later recovered into the case body, the convex portion of the engaging arm will not fit into and lock into the concave portion of the case body.

The present invention eliminates the above-mentioned drawbacks, and examples thereof will be described below.

FIG. 5 is a perspective view of a disc playback device equipped with a front cover lock release mechanism for a disc-shaped recording medium storage container according to the present invention, and FIGS. 6 to 8 are explanatory views of the main parts thereof.

In the figure, 1 is a disk storage case, 2 is a disk, 3 is a case body, 4 is a lid, 5a and 5b are lids 4
The L-shaped notches 6a and 6b formed in the lid 4
6 _a-1 and 6 _b-1 are protrusions formed on the engaging arms, and 7 a and 7 b are the engaging arms formed on the sides of the lid 4.
This is a recess formed in the case body 3 at the corresponding position of the protrusions 6 _a-1 and 6 _b-1 when attached to the case body 3, and this disk storage case is similar to the disk storage case shown in FIGS. 1 to 4. It has the same configuration as .

Reference numeral 10 denotes a disc reproducing apparatus, and most of the configuration of this disc reproducing apparatus 10 is almost the same as that of the disc reproducing apparatus shown in FIGS. That is, 11 is a case expansion mechanism, 12a, 1
2b is a clamp mechanism, 13a and 13b are lid latching mechanisms, 15 is a turntable, 16 is an insertion opening of the case expansion mechanism 11, 17a and 17b are locking arms, 18a and 18b are support plates, and 19a and 19b are shafts. , 20a, 20b are U-shaped latching members, 20
_a-1 , 20 _b-1 is a U-shaped latching member 20a, 20
cam part of the lower arm of b, 20 _a-2 , 20 _b-2 are hooked arm parts, 21a, 21b are fixing pins, 22
Numerals a and 22b are pins, 23a and 23b are support arms, 24 is a support ring, 25 is a pick-up mechanism, 26 is a latch plate, and 27 is a tension coil spring, and these structures are the same as those of the disk playback device described above.

In addition, in the symbols in FIGS. 5 to 8, FIGS. 1 to 8
The same reference numerals as those in FIG. 4 indicate the same things and have the same effect.

41a, 41b are pins provided on the locking arms 17a, 17b, and these pins 41a, 41
Lever 42a, 42b having a substantially triangular protrusion formed at the tip thereof is attached to b. 4
3a and 43b are tension coil springs, and the lever 4
2a and 42b are always urged to rotate clockwise and counterclockwise, respectively. 44a and 44b are fixed plates fixed to the rear wall 32, and this fixed plate 4
Pins 45a, 45b are implanted at the ends of the levers 4a, 44b, and tension coil springs 43a, 43b prevent the levers 42a, 42b from rotating too much in the clockwise and counterclockwise directions, respectively.
That is, by abutting the rear ends of the levers 42a, 42b against the pins 45a, 45b so that the levers 42a, 42b are approximately in predetermined positions,
This is to prevent the levers 42a, 42b from rotating too much and to position them.

46a and 46b are pins provided on the expansion member of the case expansion mechanism 11;
6b, the levers 42a and 42b are indicated by the arrows.
When lever 4 is in a position parallel to the X ₁ and X ₂ directions,
The positions are such that the protrusions 2a and 42b are engaged with the pins 46a and 46b. That is, the case body 3 is inserted into the case expansion mechanism 11 of the disc playback device 10.
When the case is inserted through the insertion opening 16 and the case expansion mechanism is moved to the back of the playback device together with the case body 3, the tapered surfaces of the protrusions come into contact with the pins 46a and 46b, and when the case is inserted further back, the When the levers 42a and 42b are rotated counterclockwise and clockwise by the tapered surfaces, and the case body 3 is further inserted into the back, the lever 42
Connect the protruding parts of a and 42b to pins 46a and 46b.
passes over, and the tension coil springs 43a, 43
The levers 42a and 42b are rotated clockwise and counterclockwise by the force b, and the lever 42
a, 42b and pins 46a, 46b are now engaged with each other. Also, when trying to pull out the case body from the disc playback device, when the case body starts to be pulled out, the pins 46a and 46b are pulled out from the lever 4.
levers 42a, 42 while being hooked to 2a, 42b.
b moves a little, but once it reaches a certain position it doesn't move any further, so levers 42a and 4
The rear ends of the levers 2b abut against the pins 45a, 45b, and the levers 42a, 42b rotate counterclockwise and clockwise, respectively, and the levers 42a, 42b and the pin 4
The latching with 6a and 46b comes to be released.

50a, 50b are rotating arms disposed on a fixed plate fixed to the rear wall 32, and the tip portions 51a, 51b of the rotating arms 50a, 50b have tapered portions 52a, 52b formed on the outside thereof. has been done.

53a and 53b are pins, and the rotating arm 50
The rotation is restricted so that the rotating arms 50a, 50b do not rotate beyond a predetermined angle.
The distal end of 50b is always positioned between the engaging arm of the front lid and the side wall of the case body when the Dix storage case is inserted.

When the disk playback device is configured as described above, when the storage container in which the disk is stored is inserted into the playback device during disk playback, the tip of the rotating arm is connected to the engagement arm of the front lid and the storage container. The engaging arm of the front cover is pressed inward by the rotating arm that enters between the side walls of the main body and whose rotation is regulated by the side wall, and the convex part of the engaging arm of the front cover and the case Since the locking state with the recess of the main body is released, only the case main body can be removed from the playback device (No. 7)
figure). In other words, in this state, the disc and the lid are held in the playback device by their respective latching mechanisms, so when the lid and the case body are disengaged, only the case body is removed from the playback device. It will be possible to remove it.

Immediately after the start of removing the case body, the rotating arm is still restricted by the side wall of the case body, so the engaging arm remains pressed inward, and the convex part of the engaging arm and the case body Even if the tapered part of the rotating arm comes into contact with the side wall of the case body, the convex part of the engaging arm is displaced from the position of the concave part of the case body in this state. Therefore, even if the engaging arm recovers a little due to the elastic restoring force of the engaging arm, the convex part of the engaging arm of the lid and the recessed part of the case body will not fit and lock, and only the case body will be regenerated. It will be possible to remove it outside.

After removing the case body, there is no restriction on the side wall of the case body with respect to the rotating arm.
The rotating arm rotates due to the elastic restoring force of the engaging arm, and the engaging arm is in an almost natural state (No. 8)
figure). Note that during this restoration, the rotating arm attempts to further rotate due to the rotational inertia of the rotating arm, but this rotation is restricted by the pins 53a and 53b, so that during the removal of the case body, the rotating arm attempts to further rotate. The pivoting arm is always located inside the side wall of the case body even if the case body is reinserted, due to the elastic restoring force of the engagement arm and the pin.

In this way, for example, during disc playback, the engaging arm of the resin lid uses its own elastic force to press and bias the engaging arm inward to prevent the lid from engaging with the case body. The rotating arm to be released is displaced and the engaging arm is in an almost natural state, so even if the synthetic resin lid held in the playback device is exposed to high temperatures, it will not engage. There is no longer any deterioration in the springiness of the arm, and the engagement arm is highly durable.

Furthermore, since the outside of the tip of the rotating arm is tapered, even if the rotating arm rotates a little too much due to the elastic force of the engaging arm,
When the case body is inserted, the tapered portion comes into contact with the side wall of the case body, which is extremely convenient.

In addition, since the rear end surface of the protrusion of the engaging arm is configured in a tapered shape, when recovering the disk and lid, the tapered part of the protrusion comes into contact with the side wall of the case body, and the case body The engaging arm is pressed inward by the side wall, and then the convex part of the engaging arm and the concave part of the case body come to engage,
The lid can be easily collected into the case body.

In addition, even if a spring as shown in FIG. 4 is not specially attached to the engaging arm, the elasticity and durability will be excellent, and the manufacturing of the lid will be simpler and lower in cost.

In addition, with only the above configuration, when the playback device is vibrated, the rotating arm rotates inward, and in this state, the tip of the rotating arm touches the engagement arm of the lid of the disk storage case and the side wall of the case body. To prevent this, for example, a pin etc. may be provided so that even if the disk storage case is inserted into the playback device, the rotating arm will always be aligned between the side wall of the case body and the engaging arm. If the structure is configured so that it is located between the two, the above-mentioned fear will be completely eliminated.

As described above, the front lid lock release mechanism of the disc-shaped recording medium storage container according to the present invention is configured such that the storage container containing the disc-shaped recording medium is inserted into the disc-shaped recording medium playback device and engaged with the storage container main body. In a mechanism that presses and biases the engagement arm of the front cover to release the engagement state, the front cover lock release member is configured to be rotatable, and the front cover is stored after the engagement state between the storage container main body and the front cover is released. When the container body is removed from the recycling device, the front lid lock release member rotates due to the elastic force of the engaging arm.
Since the engaging arm can be restored to its almost natural state, for example, during playback of a disk-shaped recording medium, the engaging arm of the front cover held in the playback device will be in its natural state. Therefore, even if the temperature inside the playback device becomes high, the engaging arm of the front cover made of synthetic resin is not bent, so its springiness does not deteriorate, and the durability of the engaging arm is improved. This makes it possible to securely engage the disc-shaped recording medium storage container main body and the front cover, and the structure is simple because the rotary arm is only rotatable within a certain rotation angle, for example. It has the features of being able to do the job and being low cost.

[Brief explanation of the drawing]

1 to 4 are explanatory diagrams of a disc-shaped recording medium reproducing device, and FIG. 5 is a perspective view of a disc-shaped recording medium reproducing device equipped with a front lock release mechanism of a disc-shaped recording medium storage container according to the present invention. , FIGS. 6 to 8 are explanatory views of the operating state of the main parts thereof. 3... Case body, 4... Lid, 6a... Engaging arm, 6 _a-1 ... Convex portion, 7a... Concave portion, 10... Disc playback device, 50a, 50b... Rotating arm, 51a, 51b...Tip, 53a, 53b
……pin.

Claims (1)

[Claims] 1 A mechanism for inserting a storage container containing a disc-shaped recording medium into a disc-shaped recording medium playback device and pressing and biasing the engagement arm of the front lid that is engaged with the storage container body to release the engagement state. In this case, the front lid lock release member is configured to be rotatable, and when the storage container main body is taken out from the playback device after the engagement state between the storage container main body and the front lid is released, the elastic force of the engaging arm A front lid unlocking mechanism for a disc-shaped recording medium storage container, characterized in that the front lid locking member rotates and the engaging arm is restored to its almost natural state.