JP2001236713A - Recording medium loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium loading device which can surely execute loading operation of an arm by simple structure, prevents floating of a spring and reduces noise during operating. SOLUTION: The recording medium loading device has a main body which accommodates a MD1 to execute recording and reproducing and is composed of an upper case 10 and a lower case 20. Further the device is provided with a lower chassis 50 to be arranged in the main body, an upper chassis 30 which is ascendably and descendably supported at the lower chassis 50 and transports the MD1 to a reproducing position and a discharging position, a slider 40 which is supported in the upper chassis 30 freely sliding and feeds/discharges the MD1, and the arm 55 which slides the slider 40 by being engaged thereto. A wall 59 is provided at a position where the arm 55 pull-in the slider 40 and the arm 55 is brought into contact with the wall. Further the arm 55 is provided with a bending part which comes into contact with the wall 59 and is bent and a coil spring for recovering a bent state and is provided so as to be able to overrun by the bending part. Thereby the slider 40 is provided so as to be able to be surely pulled in till a final reproducing position by the arm 55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium loading apparatus, and more particularly, to a recording apparatus in which a recording medium is held by a chassis in a main body of a reproducing apparatus, moved to an ejection (eject) position and moved to a reproducing (loading) position. The present invention relates to a recording medium loading device that draws in a recording medium.

[0002]

2. Description of the Related Art Conventionally, in the case of an in-vehicle MD reproducing device, for example, in the case of an in-vehicle MD reproducing device, MD is inserted into the device, held in a chassis, pulled in, and then lowered (played) by lowering the chassis. A recording medium loading device for loading the recording medium at a position; In such a conventional recording medium loading apparatus, it is important that the MD is securely operated while holding the MD and smoothly loaded to the reproduction position. FIG. 10 is a configuration diagram showing a conventional recording medium loading device employed in such an in-vehicle MD playback device. FIG. 11 shows the upper chassis 1 shown in FIG.
FIGS. 11A and 11B are views showing an internal structure of the apparatus 30. FIG. 11A shows an exploded state, and FIG. 11B shows an assembled state. FIG. 12 is a plan view showing the gear train 152 engaged with the motor 151 shown in FIG. FIG.
3 is a diagram showing the structure of a cam member 154 driven by the gear train 152 shown in FIG. FIG. 14 is a diagram showing a structure of a lever 156 that engages with the cam member 154 shown in FIG. 13 to drive the arm 155.

As shown in FIG. 10, a conventional recording medium loading apparatus employed in an on-vehicle MD reproducing apparatus is an MD reproducing apparatus.
Upper case 110 and lower case 120 housed in the playback device
, A lower chassis 150 supported in a floating state by a damper 190 in the main body, and supported by the lower chassis 150 so as to be able to move up and down, holding the MD1 and ejecting (ejecting) position and reproducing (loading). And an upper chassis 130 that moves up and down to a position.

[0004] A slider 140 is slidably supported by the upper chassis 130. This slider 14
Numeral 0 is slidably supported on the lower surface of the upper chassis 130 as shown in FIG. That is, the slider 140
Is fixed to the long hole 13 of the upper chassis 130.
0a is inserted. The reversing spring 143 hung between the upper chassis 130 and the slider 140 has a long hole 1
The slider 140 is positioned either forward (ejection side) or rearward (loading side) such that the shaft 142 abuts on either end of 30a. The upper chassis 130 includes support pins 130 protruding from both sides.
b shows the pin receiving portion 15 of the lower chassis 150 shown in FIG.
0a, it is supported on the upper portion of the lower chassis 150.

[0005] The lower chassis 150 includes a motor 151 that is driven to rotate by a predetermined voltage, and a motor 151 that rotates the motor 151.
A cam member 154 that slides in the left-right direction by a rack 153 meshed with a gear train 152 driven by the cam member 154, an arm 155 driven by the cam member 154, and a turntable 157 on which the MD1 is mounted. Here, as shown in FIGS. 12 and 13, the cam member 154 engages with a gear train 152 driven by a motor 151 and engages with a rack 153 that slides in the left and right direction shown in FIG. I agree. This cam member 154
Is provided with a convex portion 154a protruding inward,
4a is formed so as to fit into a concave portion 153a of a rack 153 which is supported by the lower chassis 150 so as to be movable in the left-right direction and slide integrally. And the lower chassis 150
, A lever 156 and an arm 155 are rotatably supported on a shaft (not shown) projecting from the bottom surface, as shown in FIG.

[0006] The lever 156 is provided with an upright shaft 156a.
Is inserted into the L-shaped cam groove 154a of the cam member 154, and is formed so as to rotate with the operation of the cam member 154. Further, a torsion coil spring 158 is provided between the lever 156 and the arm 155. When the lever 156 rotates, the arm 1 is moved through the torsion coil spring 158.
A structure for transmitting rotation to 55 is provided. Therefore, the rotation of the arm 155 is transmitted from the lever 156 via the torsion coil spring 158, and the arm 155 is connected to the shaft 155a erected at the distal end thereof as shown in FIG.
The groove 140a of the slider 140 shown in FIG.

Referring to FIG. 10 again, lower chassis 15
At 0, a lifting arm 180 formed in a U-shape is rotatably supported. At the tip of this lifting arm 180,
An engagement portion 182 that engages with the support pin 130b of the upper chassis 130 is provided. Therefore, the lifting arm 180 is moved to the lower chassis 1 by the engagement portion 182 being engaged with the support pin 130b.
The upper chassis 150 is formed so as to be able to move up and down by rotating on the side surface 50. The lifting arm 180 is
When supporting the shaft 150b erected on the lower chassis 150,
A pin 184 protruding inward is inserted into the Z-shaped cam groove 154b of the cam member 154. That is, the lifting arm 180
Has a structure in which the cam member 154 slides by driving the motor 151, and the pin 184 moves up and down along the Z-shaped cam groove 154b, thereby rotating on the side surface of the lower chassis 150 and moving the upper chassis 130 up and down. Have. Here, a lock plate 186 is attached to the pin 184 of the lifting arm 180 as shown in FIGS.
The lock plate 186 is moved up and down together with the elevating arm 180 to provide the plate lock portion 1 provided on the lower case 120.
22 to fix the movement of the lower chassis 150 during loading.

Next, an operation of loading the MD1 by using such a conventional recording medium loading apparatus will be described with reference to FIGS. FIG.
FIG. 4 is a diagram showing a state where MD1 is inserted into the recording medium loading device shown in FIG. FIG. 16 is a diagram showing a state where the MD 1 shown in FIG. 15 is pushed by hand. FIG.
7 is a diagram showing the operation of the arm 155 shown in FIG. 14, FIG. 17 (a) shows an eject state, and FIG. 17 (b) shows a loading state. FIG.
Is MD1 in the recording medium loading device shown in FIG.
FIG. 6 is a diagram showing a state where is loaded. FIG.
11 is a diagram showing a positional relationship between an arm 155 and a slider 140 at the time of completion of ejection by the recording medium loading device shown in FIG. FIG. 20 is a diagram showing a state where the arm 155 shown in FIG. 19 has moved the slider 140 in the loading direction. FIG. 21 is the same as FIG.
It is a side view which shows the state seen from the arrow C direction shown by 0. 15 and 18, the illustration of the upper chassis 130 shown in FIG. 11 is omitted.

As shown in FIG. 15, when loading a MD1 by a conventional recording medium loading apparatus, first, a user grips the MD1 and inserts it into the slider 140 of the upper chassis 130. And this slider 140
FIG. 16 shows a state in which the user presses the MD1 by hand to rotate the arm 155 in the counterclockwise direction shown by the arrow, thereby bending the torsion coil spring 158 shown in FIG. Is stored in the upper chassis 130 together with the MD1. In addition, the motor 151 further detects the movement of the slider 140 by a switch (not shown) and further rotates in the loading direction, and moves the cam member 154 in the arrow direction as shown in FIGS. 17 (a) and 17 (b). Move. On this occasion,
When the shaft 156a is pushed by the L-shaped cam groove 154a in a state before rotation shown in FIG. 17A, the lever 156 rotates the arm 155 counterclockwise as shown in FIG. 17B. Move.

As described above, the lever 156 is connected to the arm 155 via the torsion coil spring 158 (see FIG. 14).
To transmit rotational force. As a result, the arm 155
As shown in FIG. 6, the slider 14 engaged with the shaft 155a
0 is pulled into the upper chassis 130 together with MD1 in the direction of the arrow. In addition, the motor 151 connects the MD1 to the upper chassis 130.
After being pulled inside, it rotates further in the loading direction. Meanwhile, the Z-shaped cam groove 154b of the cam member 154 (see FIGS. 12 and 13)
4 is held down, whereas after the MD 1 is pulled into the upper chassis 130, the pin 184 is pushed up. As described above, the lifting arm 180 rotates to lower the upper chassis 130, and the MD1 in the upper chassis 130 is rotated.
Is moved to the reproduction position where the turntable 157 is located, and the loading operation is ended as shown in FIG. On the other hand, at the time of discharging (ejecting) operation, the operation is performed by rotating the motor 151 in the direction opposite to the loading direction.

The lever 156 is formed so as to be overdriven by a cam member 154 driven by a motor 151 at the time of ejection shown in FIG.
When the lever 156 is overdriven in this manner, the shaft 155a of the arm 155 comes into contact with the edge of the groove 140a of the slider 140, and the torsion coil spring 158 is deformed. It is pressed against the edge of 140a. Accordingly, since the slider 140 is pressed by the elastic force of the torsion coil spring 158 and positioned at the moving end, even when the elastic force of the reversing spring 143 becomes weak, the torsion coil spring 158 is urged and the ejection end state shown in FIG. The occurrence of rattling noise can be prevented. In addition, by reducing the elastic force of the reversing spring 143, a motor 151 having a small power can be used, and the loading operation can be smoothly performed.

However, at the time of loading, FIG.
Since the upper chassis 130 and the slider 140 shown in FIG. 0 are lowered to the reproduction (loading) position of the lower chassis 150 by the elevating arm 180, as shown in FIG. It is necessary to form the shaft 155a and the groove 140a of the slider 140 so as to be able to be disengaged. The rotation of the arm 155 is stopped halfway, and the shaft 155a and the groove 140a are interposed between the shaft 155a and the groove 140a.
The slider 140 is urged by the reversing spring 143 to the moving end at the interval B shown in FIG. As a result, when the elastic force of the reversing spring 143 is weak, the slider 140 cannot draw the slider 140 to the last position. If the slider 140 cannot be retracted to the last position in this way, when the slider 140a is lifted by the lifting arm 180 during the ejection of the MD1, as shown in FIG. 155a comes into contact. Arm 1
The shaft 1 fits into the groove 140a of the slider 140 because the operating ratio of the lever 156 shown in FIG.
There was a problem that it was difficult to adjust the positional accuracy of the 55a.

If the reversing spring 143 is used with its elastic force kept constant in order to solve such a problem, the spring load greatly fluctuates, and noise during operation is likely to be generated. For this reason, a method of suppressing the speed of the reversing spring 143 by delaying the rotation of the arm 155 by adjusting the gear train 152 to reduce the speed, or a method of reducing the voltage of the motor 151 on the driving side to suppress the speed of the rotation operation. One of the methods was necessary. In addition, such a reversing spring 143 has a problem in that it is necessary to consider a height due to floating of the spring.

[0014]

As described above, in the conventional recording medium loading apparatus, as shown in FIG.
If the retraction of the slider 140 by the reversing spring 143 is weak, if the slider 140 is raised at the time of ejection, the shaft 155a of the arm 155 comes into contact with the end of the groove 140a as shown in FIG. It becomes difficult to fit the arm 155 to the shaft 155a, and it is impossible to shift to the eject state. For this reason, the reversing spring 143 needs a certain amount of elastic force, and it is possible to pull the slider 140 to the end by increasing the elastic force. However, the fluctuation of the spring load becomes large and the sound at the time of operation is generated. It will be easier. Also, the arm 155
However, since the operation ratio of the lever 156 is large, it is difficult to adjust the position of the shaft 155a fitted into the groove 140a of the slider 140. In addition, it is necessary to consider the height of the reversing spring 143 due to the floating of the spring, and this floating height requires a space inside the device, which causes a problem that the entire device becomes large. The present invention solves such a problem,
An object of the present invention is to provide a recording medium loading device that can reliably execute a loading operation of an arm with a simple structure, prevent a spring from floating, and reduce noise during operation.

[0015]

In order to solve the above-mentioned problems, an embodiment of a recording medium loading apparatus according to the present invention comprises: a main body comprising an upper case and a lower case for storing and reproducing a recording medium; A lower chassis having a turntable and a drive source disposed at a playback position in the main body for placing and recording a recording medium thereon, and a drive source; The upper chassis that moves up and down to the discharge position, a slider that is slidably supported in the upper chassis, holds a recording medium and puts it in and out of the upper chassis, and a slider that is placed on the lower chassis and A groove provided in the slider is rotated by the spring pressure of a lever driven by a drive source by engaging a shaft provided upright to slide the slider, and at the end of ejection, the elastic force of the spring by the elastic force of the spring. An arm that presses in the ejecting direction, a wall is provided at a final position where the arm retracts, and the arm is brought into contact with the arm to position the arm. The provision is made so that the slider can be reliably drawn to the last reproduction position by the arm.

In another embodiment of the recording medium loading apparatus according to the present invention, there is provided a main body comprising an upper case and a lower case for storing and reproducing a recording medium and a recording medium disposed at a reproducing position in the main body. A lower chassis having a turntable and a drive source on which a medium is placed for recording and reproduction; and a lower chassis supported by the lower chassis so as to be able to move up and down to move the recording medium up and down to a reproduction position and a discharge position by the drive source. A chassis, a slider slidably supported in the upper chassis to hold a recording medium and put in and out of the upper chassis, and a shaft mounted on the lower chassis and provided with a groove in the slider to engage the shaft. An arm that rotates by the spring pressure of a lever driven by the drive source to slide the slider and that presses the slider groove in the ejecting direction by the elastic force of the spring at the end of ejection. The arm is provided with a wall at a final position where the arm retracts the slider, and the arm is brought into contact with the arm to position the arm. In addition, the slider is provided so as to be able to overrun even after contacting the wall, so that the arm can reliably pull the slider to the last reproduction position.

Here, the wall is preferably provided on the lower chassis. Preferably, the elastic member is either a coil spring or a leaf spring. Further, the drive source is a motor, and it is preferable that the upper chassis is moved up and down and the arm is rotated by a plurality of gear trains or members such as cam members. Further, it is preferable that the main body is housed in an on-vehicle MD reproducing device, and that the lower chassis is supported in a floating state in which shock such as vibration is absorbed inside during recording / reproducing of a recording medium. The recording medium is M
It is preferably a medium such as D or MO. Further, the arm in another embodiment of the recording medium loading device according to the present invention includes a connecting portion which is rotatably connected by connecting two or more members rotatably, and this connecting portion is used when the slider is retracted. It is preferable to form it so that it is not refracted when it is refracted and discharged.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a recording medium loading apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing an embodiment of a recording medium loading device according to the present invention. Also, FIG.
FIG. 2A is a diagram showing the internal structure of the upper chassis 30 shown in FIG. 1, wherein FIG. 2A shows a disassembled state, and FIG. 2B shows an assembled state. FIG. 3 shows the cam member 5.
FIG. 9 is a diagram showing a structure of a lever 56 that engages with the lever 4 to drive the arm 55. FIG. 4 shows the arm 5 shown in FIG.
FIG. FIG. 5 is a diagram showing a bending operation of the arm 55 shown in FIG. Here, the embodiment of the recording medium loading device according to the present invention has a configuration in which the conventional reversing spring shown in FIG. 10 is deleted, the arm is provided to be bendable, and a wall is provided for the arm to abut on the lower chassis. Since the other configuration is the same as that of the above-described conventional technology, the description is omitted.

As shown in FIG. 1, an embodiment of a recording medium loading apparatus according to the present invention is employed in an in-vehicle MD reproducing apparatus as in the prior art shown in FIG. , A lower chassis 50 supported in a floating state by a damper 90 in the main body, and an MD1 attached to the lower chassis 50 to hold and eject the MD1 (eject). ) Position and an upper chassis 30 which moves up and down to a reproduction (loading) position.

Here, a slider 40 is slidably supported on the upper chassis 30 as in the prior art shown in FIG. This slider 40 is, as shown in FIG.
The shaft 42 is supported by being inserted into the elongated hole 30 a of the upper chassis 30. The slider 40 is slid under the upper chassis 30 by engaging an arm 55 (see FIG. 3) with a groove 40 a formed at the rear. Here, the upper chassis 30
In contrast to the prior art shown in FIG.
No reversing spring for positioning the 0 forward (eject side) or rearward (loading side) is mounted, and the slider 40 is slidably supported without being positioned.

Referring again to FIG. 1, a lower chassis 50 includes a motor 51 which is driven to rotate by a predetermined voltage and a gear train 52 which is driven by the motor 51, as in the prior art shown in FIG. A cam member 54 that meshes with and slides in the left-right direction, an arm 55 driven by the cam member 54, and a turntable 57 on which the MD1 is mounted are provided. Here, unlike the prior art shown in FIG. 10, the lower chassis 50 is provided with a wall 59 that fixes the motor 51 near the rear end and makes the arm 55 abut. The wall 59 is formed at the loading end position of the arm 55 (the final position where the slider 40 is retracted), and is formed so that the arm 55 that rotates at this position abuts. Also, as in the prior art, a lever 56 is attached to a shaft (not shown) projecting from the bottom surface, as in the prior art.
(See FIG. 3) and the arm 55 are rotatably supported.

As shown in FIG. 3, the lever 56 has an upright shaft 56a inserted into the L-shaped cam groove 54a of the cam member 54, and rotates in accordance with the operation of the cam member 54 as in the prior art. It is formed to move. A torsion coil spring 58 is interposed between the lever 56 and the arm 55. The torsion coil spring 58 is interposed between the lever 56 and the arm 55 for urging the arm 55 from the lever 56 rotated by the cam member 54 to transmit the rotation.

As shown in FIG. 1, the pin 84 of the elevating arm 80 with the lock plate 86 interposed therebetween is inserted into the cam member 54. Therefore, the lifting arm 80
10 and 12, the upper chassis 30 is moved up and down by the cam member 54 and the lock plate 86 is moved up and down in the same manner as in the prior art shown in FIGS.
To fix the movement of the lower chassis 50 at the time of loading.

The arm 55 is formed of two members, unlike the prior art shown in FIG. 14, and the bending portion 5 is formed to bendable by connecting one end of each arm rotatably.
5b is provided. The arm 55 includes a bending portion 55b.
A coil spring 55c is provided for urging and returning the two members bent by the above. The arm 55 is provided with a stopper 55d in the vicinity of the bending portion 55b.
Is formed to bend only in the direction of the arrow shown in FIG. As described above, unlike the related art shown in FIG. 14, the arm 55 is divided into two members and is urged by the coil spring 55c to bend and bend in the direction of the arrow shown in FIG. Is formed.

Next, with reference to FIG. 6, an operation of loading an MD according to an embodiment of the recording medium loading apparatus according to the present invention will be described in detail. FIGS. 6A and 6B are operation explanatory diagrams showing an operation of loading the MD1 by the recording medium loading device shown in FIG. 1, wherein FIG. 6A shows an eject state, and FIG. 6B shows a loading state. . As shown in FIG. 6, when loading the MD1 (see FIG. 1) according to the embodiment of the recording medium loading apparatus according to the present invention, first, the user grips the MD1 from the ejected state shown in FIG. 30 into the slider 40, the arm 55 rotates counterclockwise as shown by the arrow in FIG.
Is accommodated in the upper chassis 30 together with the MD 1 in a state where is bent. Then, in the motor 51, a switch (not shown) detects the movement of the slider 40, rotates in the loading direction, and moves the cam member 54 in the direction of the arrow shown in FIG. At this time, the shaft 56a is
6 is rotated counterclockwise similarly to the arm 55 shown in FIG.

As described above, the lever 56 transmits a rotational force to the arm 55 via the torsion coil spring 58 (see FIG. 3). As a result, the arm 55 draws the slider 40 engaged with the shaft 55a into the upper chassis 30 together with the MD1, as shown in FIG. At this time, the lower chassis 50
1 (see FIG. 1), a wall 59 for holding the motor 51 is provided so as to extend to the loading end position of the arm 55. Accordingly, the arm 55 rotates to the position of the wall 59 of the lower chassis 50 (loading end position) when the slider 40 is pulled into the upper chassis 30, and then further moves to the wall 5.
9 and rotates until the bent portion 55b bends (dotted line portion shown in FIG. 5). Thus, in the present embodiment,
Unlike the prior art shown in FIG. 11, there is no need to bias the slider with a reversing spring.
Thus, the position can be regulated by pulling the slider 40 to the end.

On the other hand, at the time of ejecting (ejecting) operation, the motor 51 rotates in the direction opposite to the loading direction to slide the cam member 54 to overdrive the lever 56, as in the prior art shown in FIG. That is, if the lever 56 is overdriven during the ejection shown in FIG.
The shaft 55a of the arm 55 comes into contact with the edge of the groove 40a of the slider 40, and then the torsion coil spring 58 is deformed.
Press against the edge of 0a. As a result, the slider 40
As shown in the figure, the end of the groove 40a is
It is fixed while being pushed to the discharge position by a.

As described above, according to the embodiment of the recording medium loading apparatus of the present invention, the arm 55 urges the slider 40 to the discharging position by the torsion coil spring 58 during the discharging operation, and the bending portion 5 of the arm 55 during the loading operation.
5b is bent and the slider 40 is moved by the coil spring 55c.
To the wall 59 (loading end position)
Without using a reversing spring, load fluctuations can be suppressed and smooth operation can be performed. In addition, the operation sound peculiar to the reversing spring generated at the time of loading and ejecting of the arm 55 is eliminated, so that a sound countermeasure component is not required. Further, according to the embodiment of the recording medium loading apparatus according to the present invention, the reversing spring can be reduced by a simple structure in which the arm 55 is divided into two and formed to be bendable. Since it is not necessary to secure an installation space in the device in consideration of the height due to the lifting, the size of the entire device can be reduced.

Next, another embodiment of the arm shown in FIG. 3 will be described in detail with reference to FIGS. FIG. 7 is a view showing another embodiment of the arm shown in FIG. FIG. 8 is a view showing still another embodiment of the arm shown in FIG. FIG. 9 shows an arrow A shown in FIG.
It is a side view which shows axis | shaft 75a seen from the direction. As shown in FIG. 7, in another embodiment of the arm, as in the case of the arm shown in FIG. 3, two members are provided, and one end of each arm is rotatably connected so as to be bent. A portion 65b is provided. The arm 65 is provided with a stopper 65d near the bending portion 65b, and is formed to bend only in the direction of the arrow shown in FIG. Here, unlike the arm shown in FIG. 3, the arm 65 is bent by the bending portion 65b.
The two members are provided so as to be able to return by being urged by a plate spring 65c instead of the coil spring.

According to another embodiment of the arm thus formed, the bending portion 65b is bent at the time of loading and the slider 4 shown in FIG.
0 is urged against the wall 59 (loading end position), so that an effect similar to that of the arm shown in FIG. 3 can be obtained, and the urging force can be easily adjusted by using the leaf spring 65c as compared with the coil spring. It becomes possible to do. Further, in another embodiment of the arm, as shown in FIG. 8, the bent portion 65b and the leaf spring 6 shown in FIG.
5c, it is elongated like the prior art shown in FIG. This arm 75 has the structure shown in FIG.
As shown in FIG. 7, a shaft 75a that engages with the slider 40 is provided at an elongated end, and the shaft 75a is formed by a leaf spring. Therefore, according to still another embodiment of such an arm, a shaft 75a formed by a leaf spring urges the slider 40 against the wall 59 shown in FIG. The same effect as that of the arm can be obtained, and the arm 75 can be easily formed by providing the shaft 75a made of a leaf spring on the arm of the prior art shown in FIG. 14, so that the manufacturing cost can be reduced. Become.

Although the embodiment of the recording medium loading apparatus according to the present invention has been described in detail, the present invention is not limited to the above-described embodiment, and can be changed without departing from the gist of the present invention. . For example, an embodiment has been described in which the recording medium loading device according to the present invention is used in an MD playback device. However, the present invention is not limited to this, and can be applied to a loading device such as an MO.

[0032]

As described above, according to the recording medium loading apparatus of the present invention, the slider is urged to the loading position and the ejecting position by the arm without using the reversing spring, so that the operation can be performed smoothly and the arm can be moved smoothly. The operation sound peculiar to the reversing spring generated at the time of the operation is eliminated, and a component for sound countermeasures becomes unnecessary. Further, according to the recording medium loading device of the present invention, the simple structure of the arm eliminates the necessity of the reversing spring, so that the cost of parts can be reduced, and the installation space in the device is taken into consideration in consideration of the height due to the floating of the reversing spring. Since it is not necessary to secure the size of the device, it is possible to reduce the size of the entire device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a recording medium loading device according to the present invention.

FIG. 2 is a view showing the internal structure of the upper chassis shown in FIG. 1;

FIG. 3 is a diagram illustrating a structure of a lever that engages with a cam member to drive an arm.

FIG. 4 is a view showing the arm shown in FIG. 3;

FIG. 5 is a view showing a bending operation of the arm shown in FIG. 4;

6 is an operation explanatory diagram showing an operation of loading an MD by the recording medium loading device shown in FIG. 1;

FIG. 7 is a view showing another embodiment of the arm shown in FIG. 3;

FIG. 8 is a view showing still another embodiment of the arm shown in FIG. 3;

FIG. 9 is a side view showing an axis viewed from the direction of arrow A shown in FIG. 8;

FIG. 10 is a configuration diagram showing a conventional recording medium loading device.

FIG. 11 is a view showing the internal structure of the upper chassis shown in FIG. 10;

FIG. 12 is a plan view showing a gear train engaged with the motor shown in FIG. 10;

FIG. 13 is a diagram showing a structure of a cam member driven by the gear train shown in FIG.

FIG. 14 is a view showing a structure of a lever which engages with the cam member shown in FIG. 13 to drive the arm.

FIG. 15 is a diagram illustrating a state where an MD is inserted into the recording medium loading device illustrated in FIG. 10;

FIG. 16 is a diagram showing a state where the MD shown in FIG. 15 is pressed by hand.

FIG. 17 is a view showing the operation of the arm shown in FIG. 14;

FIG. 18 is a diagram showing a state where an MD is loaded on the recording medium loading device shown in FIG. 10;

FIG. 19 is a diagram showing a positional relationship between an arm and a slider at the time of completion of ejection by the recording medium loading device shown in FIG.

FIG. 20 is a view showing a state where the arm shown in FIG. 19 has moved the slider in the loading direction.

FIG. 21 is a side view showing a state viewed from the arrow C direction shown in FIG. 20;

[Explanation of symbols]

 1 MD 10 Upper case 20 Lower case 22 Plate lock portion 30 Upper chassis 40 Slider 50 Lower chassis 51 Motor 52 Gear train 53 Rack 54 Cam member 54a L-shaped cam groove 55 Arm 55a Shaft 55b Bend 55c Coil spring 55d Stopper 56 Lever 56a Shaft 57 turntable 58 torsion coil spring 59 wall 80 elevating arm 84 pin 86 lock plate 90 damper

Claims (8)

[Claims] 1. A main body comprising an upper case and a lower case for storing and recording and reproducing a recording medium, and a turntable disposed at a reproduction (loading) position in the main body for mounting and recording and reproducing the recording medium. And a lower chassis having a driving source; an upper chassis supported by the lower chassis so as to be able to move up and down to move the recording medium up and down to a reproduction position and an ejection position by the driving source; A slider that is slidably supported within and holds the recording medium and moves in and out of the upper chassis; and a shaft mounted on the lower chassis and provided with a groove in the slider to engage the shaft. The slider is slid by being rotated by the spring pressure of a lever driven by the drive source, and when the ejection is completed, the elastic force of the spring causes the groove of the slider to be ejected in the ejection direction. An arm that presses the arm, a wall is provided at a final position where the arm retracts the slider, and the arm is brought into contact with the arm to position the arm. An elastic member for urging and returning the slider is provided so that it can be overrun even after contacting the wall, so that the arm can reliably pull the slider to the last reproduction position. Recording medium loading device. 2. A main body comprising an upper case and a lower case for storing and recording / reproducing a recording medium, a turntable disposed at a reproduction position in the main body for mounting and recording / reproducing the recording medium, and a driving source. A lower chassis having an upper chassis supported by the lower chassis so as to be able to move up and down to convey the recording medium up and down to a reproduction position and a discharge position by the driving source; A slider which is supported and holds the recording medium to take it in and out of the upper chassis; and a slider mounted on the lower chassis and provided with a groove in the slider and engaged with an upright shaft to be driven by the drive source. An arm that rotates by a spring pressure of a lever to slide the slider, and that presses a groove of the slider in an ejecting direction by an elastic force of the spring at the end of ejection, By providing a wall at the final position where the arm retracts the slider and positioning the arm in contact with the arm, the shaft of the arm is formed of an elastic member so that it can be overrun even after contacting the wall. A recording medium loading device, wherein the arm is provided so that the slider can be reliably pulled to a last reproduction position. 3. The recording medium loading device according to claim 1, wherein the wall is provided on the lower chassis. 4. The recording medium loading device according to claim 1, wherein the arm includes the connecting portion that is rotatably connected by connecting two or more members rotatably, and the connecting portion includes the connecting portion. A recording medium loading device, wherein the recording medium loading device is formed so as to be bent when the slider is drawn in and not bent when the slider is ejected. 5. The recording medium loading device according to claim 1, wherein the elastic member is one of a coil spring and a leaf spring. 6. The recording medium loading apparatus according to claim 1, wherein the drive source is a motor, and the upper chassis is moved up and down by a member such as a plurality of gear trains or cam members. A recording medium loading device for driving rotation of the arm. 7. The recording medium loading device according to claim 1, wherein the main body is housed in an in-vehicle MD reproduction device, and the lower portion is internally formed during recording / reproduction of the recording medium. A recording medium loading device, wherein a chassis is supported in a floating state for absorbing shocks such as vibrations. 8. The recording medium loading device according to claim 1, wherein the recording medium is a medium such as an MD and an MO.