JP2002109809A - Support plate locking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support plate locking mechanism capable of locking a support plate without any positional shifting of a holder for holding a disk with respect to the support plate, or any positional shifting of the support plate with respect to an outer case. SOLUTION: In an outer case 1, a support plate 2 to be elevated and a holder 3 on the support plate to hold a disk are provided, and the holder 3 is provided with a slider 12 slid along a guide section 16 provided in the support plate to move the holder 3 along the guide section. An outer casing 2 is provided with a lock holder 30 in a position opposite the slider 12 and, when the support plate 2 is pressed toward the outer casing 2 by a pressing means, the slider 12 of the holder 3 is abutted on the lock holder 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support plate locking mechanism for locking a support plate provided with a holder for holding a disk at a predetermined position in a disk device such as an MD player or a CD player.

[0002]

2. Description of the Related Art A so-called MD generally includes a mini-disc serving as a recording medium rotatably housed in a disc cartridge. A disk cartridge (hereinafter, abbreviated as a disk) containing the minidisk is inserted into a disk device and loaded into a predetermined position (disk chucking position) in the disk device. Ejected from inside. Thus, when loading or ejecting a disk, the opening of the holder holding the disk in the disk device is aligned with the insertion slot on the front of the disk device, and the disk is locked at this position. There is a need. The holder is supported by a support plate called a traverse chassis. When the holder is locked, the support plate is locked.

An example of the support plate locking mechanism will be described with reference to FIGS. In these figures, reference numeral 1 indicates an outer case. In the outer case 1, there is provided a substantially rectangular plate-shaped support plate 2 called a traverse chassis, and a holder 3 provided on the support plate 2 for holding a disk. The support plate 2 is supported in a floating state in the outer case 1 as described below. That is, at the four corners of the support plate 2, air dampers 4, 5 are arranged vertically so as to sandwich the support plate 2, and the upper air damper 4 is attached to the top plate of the outer case 1. The lower air damper 5 is in contact with the plate 6 and the stepped screw 7. Further, the support plate 2 and the outer case 1
And four suspension springs 8 are hung between the top plates. With such a configuration, the support plate 2 is supported in a floating state.

[0004] As shown in FIG. 7, a carrier base 10 for holding an inserted disc is provided.
And an upper plate 11. The upper plate 11 has a substantially concave cross section, and is covered by the carrier base 10 from above. Two pins (sliders) 12 protrude from the left and right side walls of the upper plate 11, respectively.
An elongated hole 14 extending in the front-rear direction is formed between them. On the other hand, carrier base pins 15 protrude from the left and right side walls of the carrier base 10, respectively.
The carrier base pin 15 is connected to the upper plate 11.
Is slidably inserted back and forth in a long hole 14. Thereby, the carrier base 10 and the upper base 11 are connected so as to be relatively movable back and forth.

The holding member 3 having the above structure is provided on the support plate 2 as follows. That is, the support plate 2
As shown in FIGS. 6 and 7, a pair of left and right cam walls 16, 16 are erected in parallel and separated from each other.
The holding body 3 is arranged between 6 and 16. In FIG. 7, the left cam wall 16 is omitted. The cam wall 16 is formed with two cam portions (guide portions) 19 including a first cam portion 17 and a second cam portion 18 which are separated from each other in the front and rear directions. The first cam portion 17 is a horizontal surface extending in the front-back direction, and the second cam portion 18 is a groove-shaped member extending continuously and obliquely downward from the rear end of the first cam portion 17. Further, a groove 20 extending downward is formed in the cam wall 16 at an intermediate portion between the cam portions 19, 19. And
The carrier base pin 15 of the carrier base 10 is
The pin 12 of the upper plate 11 is inserted into the groove 20 of the cam wall 16 so as to be slidable up and down.
And is slidable on the cam 19.

The top plate of the outer case 1 includes
As shown in FIG. 6, a relatively large opening 1a is formed, and contact portions 1b slightly protruding downward are formed on the back surface of the top plate at approximately four corners of the opening 1a. Have been. In the support plate locking mechanism having the above configuration, when the support plate 2 is in the lock position, the four corners of the carrier base 10 of the holder 3 abut on the four contact portions 1b.

Next, the operation of the lock mechanism will be briefly described. FIG. 8 is a view showing a state in which the support plate 2 is located at the disc chucking position. In this state, the support plate 2 floats in the outer case 1 by the air dampers 4, 5 and the suspension springs 8. I have. At this time, the carrier base pin 15 of the carrier base 10 is
0, and the pin 12 of the upper plate 11 is located at the lower end of the second cam portion 18 of the cam portion 19.

When the eject operation starts from this state,
The pin 12 of the upper plate 11 moves forward while sliding on the cam portion 19. As the pin 12 moves obliquely upward on the second cam portion 18, the support plate 2 is raised by the urging force of the air damper 5 and the suspension spring 8, and the holder 3 is also raised by the rising of the pin 12. Going up. The pin 12 is the second cam portion 1
When it comes near the upper end of 8, the urging force becomes zero. Further, just before the pin 12 moves forward and reaches the first cam portion 17, the four corners of the carrier base 10 of the holder 3 abut against the four contact portions 1 b of the outer case 1,
Here, the support plate 2 descends when the pin 12 presses the cam wall 16 downward by taking a reaction force. When the support plate 2 descends, the support plate 2 is urged upward by the air damper 5 and the suspension spring 8.
When the pin 12 reaches the first cam portion 17, the support plate 2 is locked at a predetermined position in the outer case 1 by the pin 12 pressing the first cam portion 17 downward against this urging force. Is done.

[0009]

By the way, the lock mechanism of the support plate as described above has the following problems.
That is, when the support plate 2 is locked,
The four corners of the carrier base 10 are in contact with the four contact portions 1b of the outer case 1, where the cam wall 16 is pressed downward by the pins 12 of the upper plate 11 by taking a reaction force. The position where the force is applied is different from the position where the pin 12 presses the cam wall 16 downward. The carrier base 10 projects from both side walls.
The cam wall 1 is provided by the carrier base pins 15 and 15.
6, a rotational force acts on the carrier base 10, so that the holder 3 is easily displaced with respect to the support plate 2.

The holding member 3 is disposed at the front of the support plate 2 in consideration of the position of the disc ejected.
The carrier base 10 is also arranged at the front of the support plate 2. Therefore, the four corners of the carrier base 10
Since the position where the four contact portions 1b of the outer case 1 come into contact with each other and take a reaction force is also on the front side, it is difficult for the pin 12 to press the support plate 2 straight down via the cam wall 16. In addition, the support plate 3 was easily displaced with respect to the outer case 2.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and does not displace the holder holding the disc with respect to the support plate, and does not displace the support plate with respect to the outer case. It is another object of the present invention to provide a support plate locking mechanism capable of locking the support plate.

[0012]

In order to achieve the above object, according to the present invention, as shown in FIGS. 1 to 4, for example, an ascending and descending support plate 2 is provided in an outer case 1.
A holder provided on the support plate for holding a disk
(Carrier base 10 and upper plate 11) 3 are provided, and the holder 3 slides along a guide portion (cam wall) 16 provided on the support plate 2 so that the holder 3 (Pin) 12 for moving the slider along the guide portion 16
The support plate 2 is urged toward the outer casing 1 by urging means (the air damper 5 and the suspension spring 8) so that the holding body 3 comes into contact with the outer casing 1, The slider 12 of the holder 3 presses the guide portion 16 of the support plate 2 against the urging force of the urging means to lock the support plate 2 at a predetermined position in the outer case 1. A locking mechanism for the supporting plate, wherein the outer casing 1
The lock holder 3 is located at a position facing the slider 12.
0 is provided, and when the support plate 2 is urged toward the outer casing 1 by urging means, the slider 12 of the holder 3 is attached to the lock holder 30 of the outer casing 1. A lock mechanism for a support plate, which is brought into contact with the support plate.

According to the first aspect of the present invention, the support plate is urged toward the outer casing by an urging means, and the slider of the holding member contacts the lock holder of the outer casing. Then, the slider of the holder presses the guide portion of the support plate against the urging force of the urging means, thereby locking the support plate at a predetermined position in the outer case. Since the lock holder is provided at a position of the outer casing facing the slider, a position where the slider takes a reaction force at a contact portion with the lock holder, and the slider is a support plate. The position where the guide portion is pressed substantially coincides. Therefore, the support plate is locked without any rotational force acting on the support body, and thus the support body is not displaced with respect to the support plate.

Further, since the holding body is arranged at the front of the support plate in consideration of the disc eject position, the carrier base is also arranged at the front of the support plate. However, since the position where the slider of the holding member comes into contact with the lock holder and takes a reaction force substantially coincides with the position where the slider presses the guide portion of the support plate, the guide portion is moved by the slider. Can be pressed straight down through the support plate, so that the support plate is not displaced with respect to the outer case,
The support plate will be locked.

According to a second aspect of the present invention, in the support plate locking mechanism of the first aspect, the sliders 12 are provided on left and right sides of the holder, respectively, and the guide portion 16 is provided on the support plate 2. The lock holder 30 is provided on each of the left and right sides of the outer casing 2, and the sliders 12 are disposed at the center of the support plate 2 in the front-rear direction. A locking mechanism for the support plate.

According to the second aspect of the present invention, since the sliders provided on the left and right sides of the holding member are arranged at the center of the support plate in the front-rear direction, each slider is provided with each lock holder. When each slider presses each guide portion of the support plate downward in a state in which the support plate is in contact with the support plate, the center portion of the support plate can be pressed downward, so that the support plate can be pressed straighter downward. Therefore, the support plate is locked without being displaced with respect to the outer case.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of a support plate lock mechanism (hereinafter, abbreviated as a lock mechanism) of the present invention will be described below with reference to FIGS. The lock mechanism of the present embodiment is provided in a disc loading mechanism of an MD player. The difference between the lock mechanism and the conventional lock mechanism shown in FIGS. The pin 12 provided on the plate 11 comes into contact with a lock holder provided on the outer case 1 and is locked. The other basic configuration is the same as the lock mechanism shown in FIGS. is there. Therefore, the same components as those of the lock mechanism shown in FIGS. 5 to 8 are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

As shown in FIGS. 1 to 3, two lock holders 30 are attached to the outer case 1. That is, as shown in FIG. 3, the outer case 1 is formed on a top plate 1c, a pair of left and right side walls 1d, 1d formed on left and right sides of the top plate 1c, and a rear end of the top plate 1c. And a rear wall 1e, and an opening 1a is formed at the front of the top plate 1c. This opening 1a is a top plate 1c
Is formed so as to be closer to the front side and right side from the central portion. In addition, hook portions 1f, 1f for hanging the suspension spring 8 are formed on the side wall 1d so as to be separated from each other.

On the right side wall 1d, as shown in FIG. 3, a folding piece 31 folded inside the outer case 1 is provided.
Are formed. The right lock holder 30 is disposed between the tip of the folding piece 31 and the back surface of the top plate 1c, and the lock holder 30 is sandwiched between the folding piece 31 and the top plate 1c. The lock holder 30 is made of resin, and is provided on the back surface of the top plate 1c along the right edge of the opening 1a. At the left edge of the top plate 1c, a folding piece 32 folded downward is formed. The left lock holder 30 is arranged between the tip of the folding piece 32 and the back surface of the top plate 1c, and the lock holder 30 is sandwiched between the folding piece 32 and the top plate 1c. The left lock holder 30 is provided along the left edge of the opening 1a on the back surface of the top plate 1c.

FIG. 1 is a side sectional view showing a state in which the support plate 2 is locked. In this state, the support plate 2 faces a pin (slider) 12 behind an upper plate 11 constituting the holding body 3. The lock holder 30 is disposed at a position.
FIG. 2 is a plan view showing a state where the support plate 2 is locked. As shown in this figure, a pair of front and rear pins 12, 12 are provided on the left side of the upper plate 11,
The tip of the rear pin 12 is in contact with the left lock holder 30 from below. Also, the pin 12
Is in contact with the first cam portion 17 behind the left cam wall 16 of the support plate 2. The front pin 12 is in contact with the first cam portion 17 in front of the left cam wall 16. A pair of front and rear pins 12, 12 are provided on the right side of the upper plate 11.
The rear pin 12 is in contact with the right lock holder 30 from below. The rear end of the pin 12 is in contact with the first cam portion 17 behind the right cam wall 16 of the support plate 2. The front pin 12 is in contact with the first cam portion 17 in front of the right cam wall 16.

The two pins 12, 12 on the left side of the upper plate 11 and the two pins 12, 12 on the right side are
Instead of being in the same position before and after,
The two pins 12, 12 are arranged in front of the two right pins 12, 12. Accordingly, the left cam wall 16 is disposed on the front side of the right cam wall 16.
Also, a pin 12 behind the left side of the upper plate 11,
The pin 12 behind the right side is disposed at the center of the support plate 2 in the front-rear direction when the support plate 2 is locked.

The pin 12 is located at the lower end of the second cam portion 18 at the disc chucking position. From this position, the pin 12 moves obliquely upward on the second cam portion 18 to move the first cam portion 18 upward. When positioned on the cam portion 17, the support plate 2
Is locked.

Next, the operation of the lock mechanism according to this embodiment will be described. FIG. 4 is a view showing a state in which the support plate 2 is located at the disk chucking position. In this state, the support plate 2 floats in the outer case 1 by the air dampers 4, 5 and suspension springs 8. I have. In this state, the carrier base pin 15 of the carrier base 10 is
Is located at the lower end of the groove 20 of the upper plate 11.
The rear pin 12 is the second cam portion 18 of the rear cam portion 19.
Is located at the lower end.

The pin 12 in front of the upper plate 11
Is located at the lower end of the second cam portion 18 of the front cam portion 19. The front and rear pins 12 and 12 on the left and right sides of the upper plate 11 perform the same movement, but the locking mechanism locks using the rear pin 12. A description will be given focusing on the movement of.

When the eject operation starts from the above state, the pin 12 of the upper plate 11
9 and move forward while sliding on it. A slider (not shown) is provided on the outside of the cam wall 16 so as to be movable back and forth, and a pin 12 is engaged with the slider. The pin 12 is moved by the movement of the slider. As the pin 12 moves obliquely upward on the second cam portion 18, the support plate 2 is biased by the air damper 5 and the suspension spring 8,
While being pushed up by the air damper 5 and being pulled up by the suspension spring 8, it rises. In addition, the holding body 3 also moves up due to the rising of the pin 12. Here, the holder 3 includes a carrier base 10 and an upper base 11, and the carrier base pin 15 of the carrier base 10 is
6 is slidably inserted into the groove 20 up and down.
The carrier base 10 is restricted from moving forward and backward and can move up and down. On the other hand, since the upper base 11 is slidable back and forth with respect to the carrier base 10, it can be moved up and down together with the carrier base 10,
The pin 12 can be moved back and forth by the back and forth movement.

When the pin 12 comes near the upper end of the second cam portion 18, the urging force becomes zero. That is, the force with which the air damper 5 pushes up the support plate 2 and the force with which the suspension spring 8 pulls up the support plate 2 become zero.

Further, when the pin 12 is pushed forward by the slider and rises obliquely along the second cam portion 18,
The upper base 11 of the holder 3 rises obliquely and the carrier base 10 rises. Immediately before the pins 12 reach the first cam portions 17, the four corners of the carrier base 10 of the holder 3 abut against the four contact portions 1 b of the outer case 1, and the pins 12 are provided on the outer case 1. The lock holder 30 comes into contact with the lock holder 30. Then, the pin 12 presses the first cam portion 17 of the cam wall 16 downward by taking a reaction force, whereby the support plate 2 descends.

As the support plate 2 descends, as shown in FIG. 1, the air damper 5 is compressed and the suspension spring 8 is pulled, so that the air damper 5 and the suspension spring 8 move the support plate 2 upward. , But the pin 12 is
7, the support plate 2 is locked at a predetermined position in the outer case 1 by the pin 12 pressing the first cam portion 17 downward against the urging force.

As described above, according to the lock mechanism of the present embodiment, the support plate 2 is urged toward the outer casing 1 by the air damper 5 and the suspension spring 8, and the upper plate 11 constituting the holding body 3
When the pin 12 of the upper plate 11 is in contact with the lock holder 30 attached to the outer casing 2, the pin 12 of the upper plate 11 moves the first cam portion 17 of the cam wall 16 of the support plate 2 to the air damper 5 and the suspension. By pressing against the urging force of the spring 8, the support plate 2 can be locked at a predetermined position in the outer case 1. Since the lock holder is provided at a position of the outer casing 1 facing the pin, the position at which the pin 12 takes a reaction force at the contact portion with the lock holder 30 and the position of the pin 12 at the cam wall of the support plate 2 are set. The position where 16 is pressed substantially coincides. Therefore, no rotational force acts on the upper plate 11 and the carrier base 10 slidably connected to the upper plate 11 back and forth, so that the holding body 3 including the carrier base 10 and the upper plate 11 is The support plate 2 can be locked without being displaced with respect to the support plate 2.

Since the holding member 3 is disposed at the front of the support plate 2 in consideration of the disc eject position,
The carrier base 10 is also arranged at the front of the support plate 2. However, the position where the pin 12 of the upper plate 11 comes into contact with the lock holder 30 and takes a reaction force is located at the center of the support plate 2.
(Substantially the position of the center of gravity), and the position at which the pin 12 presses the cam wall 16 of the support plate 2 substantially coincides with the support plate 2. Therefore, the support plate 2 can be moved without being displaced with respect to the outer case 2.
Can be locked.

In this embodiment, the example in which the lock mechanism of the support plate according to the present invention is provided in the disk loading mechanism of the MD player has been described. However, the lock mechanism of the support plate according to the present invention is a CD player. Or a disk loading mechanism of a DVD player. Further, the locking mechanism of the support plate of the present embodiment is a vehicle-mounted M
Most preferably, the present invention is applied to a D player, but the present invention is not limited to this, and the present invention may be applied to a portable MD player or an audio system MD player.

[0032]

As described above, according to the first aspect of the present invention, since the lock holder is provided at a position facing the slider, the slider is provided at the contact portion with the lock holder. The position where the reaction force is taken and the position where the slider presses the guide portion of the support plate substantially coincide with each other. Therefore, since no rotational force acts on the support, the support can be locked without the support being displaced from the support.

Further, the position at which the slider of the holding member contacts the lock holder and takes a reaction force substantially coincides with the position at which the slider presses the guide portion of the support plate.
The support plate can be pressed straight down via the guide portion, so that the support plate can be locked without being displaced with respect to the outer case.

According to the second aspect of the present invention, the same effects as those of the first aspect can be obtained, and the sliders provided on the left and right sides of the holding member can be provided at the front and rear of the support plate. Since it is arranged at the center in the direction, the center of the support plate can be pressed downward. Therefore, the support plate can be pressed more straight down, so that the support plate can be locked without being displaced with respect to the outer case.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an example of a support plate locking mechanism of the present invention, showing a state in which a support plate is locked.

FIG. 2 is a plan view showing a state where the support plate is locked.

FIG. 3 is a perspective view of the outer case.

FIG. 4 is a side sectional view showing a state where the support plate is at a disk chucking position.

FIG. 5 is a side sectional view showing an example of a conventional lock mechanism of a support plate, showing a state where the support plate is locked.

FIG. 6 is a plan view showing a state where the support plate is locked.

FIG. 7 is a perspective view of the holder.

FIG. 8 is a side sectional view showing a state where the support plate is at a disk chucking position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 2 Support plate 3 Holder 5 Air damper (biasing means) 8 Suspension spring (biasing means) 10 Carrier base 11 Upper plate 12 Pin (slider) 16 Cam wall (guide part) 30 Lock holder

Continued on the front page (72) Inventor Kenji Tomioka 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Inside Kenwood Co., Ltd. (72) Inventor Satoshi Nakamura 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Inside Kenwood Co., Ltd. (72) Inventor Hisanori Togawa 1-14-6 Dogenzaka, Shibuya-ku, Tokyo F-term in Kenwood Corporation (reference) 5D046 CB02 CC02 FA01 FA13 HA08

Claims (2)

[Claims] A support plate provided on the support plate for holding a disk, wherein the support member is provided on the support plate, and a guide provided on the support plate is provided on the support member. A sliding member that moves the holder along the guide portion by sliding along the portion, the support plate is urged toward the outer casing by an urging means, and the holder is Is pressed against the guide portion of the support plate against the biasing force of the biasing means in a state where the support plate is in contact with the outer casing. A lock mechanism for locking the support plate at a predetermined position, wherein the outer casing is provided with a lock holder at a position opposed to the slider, and the support plate is biased by the outer casing. If it is biased towards the ring, the locking mechanism of the support plate slider of the holding member is characterized by comprising a lock state holder abuts the outer casing. 2. The support plate locking mechanism according to claim 1, wherein the slider is provided on each of left and right sides of the holder, and the guide portions are provided on left and right sides of the support plate, respectively. The lock mechanism for a support plate, wherein the lock holders are provided on left and right sides of the outer casing, respectively, and the sliders are disposed at a center of the support plate in the front-rear direction.