JPH079238Y2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a disc player for reading and reproducing information recorded on a disc, and more particularly to a compact disc player suitable for being mounted on a vehicle and used. .

"Prior Art" Conventionally, various types of compact disc players are known which record information on a disc or read information from the disc and reproduce it.

"Problems to be solved by the invention" By the way, in the conventional compact disc player, the product price is very complicated, minute, relatively weak against vibration, etc. I have to.

Therefore, the present invention provides these mechanisms, in particular, a loading mechanism for feeding a compact disc to a fixed position and then chucking the compact disc with a disc retainer, the chucking mechanism, and a stopper mechanism for stably maintaining the chucking position. The main purpose of the present invention is to provide a compact disc player which is as simple as possible, durable, compact, and inexpensive, and which is suitable for vehicle mounting.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is a disk player that reads and reproduces information recorded on a disk, and a flexion gear driven by a loading motor and the flexion gear. A friction arm that is in sliding contact with the operation gear and is urged to rotate in the gear rotation direction,
The loading arm is supported by the deflection arm, and the loading arm is swingably supported by the machine frame and includes a loading rack that meshes with the loading gear. Further, when the disc is fed into a fixed position, A kick lever that swings in contact with the disc and a start lever that moves to a start position in conjunction with the kick lever are provided, and the movement of the start lever releases the locking of the flexion arm to rotate the flexion arm. Is formed so that the loading arm swings, and when the loading arm swings, the chucking mechanism operates to move the disc retainer to the chucking position. A chucking arm at the tip and this chucking The chucking lever locks the arm in a non-chucking position, and the chucking lever rotates with the swing of the loading arm to release the engagement of the chucking arm, and the chucking arm is spring-loaded. The stop lever is formed so as to move to the chucking position, and further includes a stop lever that interlocks with the loading arm when the loading arm moves to the chucking position and prevents the start lever from returning.

"Operation" Since the deflection arm configured as described above is always biased in the rotation direction of the reflection gear, the loading arm can be easily loaded by simply releasing the gear stopper that holds the movement in this rotation direction. It can be swung to the chucking position by the meshing of the loading rack with the loading rack, whereby a series of loading mechanisms can be easily configured. The chucking mechanism includes a chucking arm having a disc retainer at its tip and a chucking lever that locks the chucking arm in a non-chucking position. The chucking lever swings the loading arm. Since the chucking arm is disengaged by rotating with the movement, and the chucking arm is moved to the chucking position by the spring, the disc is smoothly pressed in conjunction with the loading arm. Can be chucked by. In addition, a kick lever that moves in contact with the disc when the disc is fed to a fixed position and a start lever that moves to the start position in conjunction with the kick lever are provided, and the movement of the start lever causes the deflection arm to move. The loading arm is formed so as to swing by the rotation of the reflection arm when the locking arm is released, and when the loading arm swings, the chucking mechanism operates to move the disc retainer to the chucking position. Further, since a stop lever is provided to prevent the start lever from returning when the loading arm moves to the chucking position, it is possible to reliably hold the loading mechanisms during chucking operation. It is possible to achieve stable reproduction.

"Embodiment" Hereinafter, the present invention will be described in detail based on an embodiment configured as a car disc player.

The drawing shows the internal mechanism with the exterior body removed.
The drawing is a plan view, FIG. 2 is a rear view, and FIG. 3 is a front view.

Reference numeral (1) is a frame of a disc player, and an opening (2) for selectively taking in and out an 8 cm disc (D1) and a 12 cm disc (D2) is provided on the front surface of the frame. ing.

On the upper plate (3) of the machine frame (1), a pair of left and right guide levers (5) swinging around pivots (4) and (4) as fulcrums.
(5) is provided. These left and right guide levers (5) (5) are connected by a center lever (6) and are formed so as to operate simultaneously. The guide levers (5) and (5) have guide rollers (7), respectively.
(7) is vertically installed, and when the 12 cm disc (D2) is inserted, the guide rollers (7) and (7) are pressed outward in contact with the outer peripheral surface of the disc (D2). The guide levers (5) and (5) are oscillated in synchronization with each other as shown by phantom lines in the figure. Therefore, the inserted 12 cm disc (D2) is always aligned with the center. The 8 cm disc (D1) is formed so that the left and right guide levers (5) and (5) can pass without rocking.

Reference numeral (8) is a kick lever, which is swingably held on the rear portion of the plunger lever (9) connected to the right guide lever (5) about a pivot shaft (10) as a fulcrum. . A pin (11) is provided at one end of the kick lever (8) to abut the outer peripheral surface of the inserted discs (D1) and (D2), and the other end is linked to a start lever (12). .

Reference numerals (13) and (13) are stoppers for 8 cm discs, which are fixed to the shaft (14), and the gear (15) provided on the shaft (14) is attached to the plunger lever (9). It engages with the formed rack (16). or,
Reference numerals (17) and (17) are stoppers for 12 cm discs.

Further, a drive loading roller (18) for feeding the manually inserted discs (D1) and (D2) to a fixed position is supported by the machine frame (1) and cooperates with the drive loading roller (18). Driven loading roller (1
9) is supported below the roller (18) by a stay (21) connected to a loading arm (20) described later (see FIGS. 6 and 7). The loading rollers (18) (19) are both formed of rubber rollers.

As shown in detail in FIG. 8, the driving loading roller (18) includes a loading motor (22), a worm gear (23), a three-tooth integrally molded reflection gear (24), an idle gear (25) and a roller. It is designed to be driven via a gear (26). The reflection gear (24) is held by the machine frame (1), and the side surface of the reflection gear (24) is constantly elastically contacted with the reflection arm (27) by the spring (28) (see FIG. 1). It is attached coaxially with the reflection gear (24). And this reflection arm (2
The loading gears (29A) and (29B), which are integrally molded with two teeth, are supported at the tip of (7) via the shaft (29) and the slot (31), and have a large diameter loading gear (29).
B) meshes with the reflection gear (24). Further, the lower end of the gear stopper (30) is engaged with the upper surface of the shaft (29). When the gear stopper (30) is disengaged, the reflection arm (27) rotates counterclockwise due to frictional force. The small-diameter loading gear (29A) meshes with the loading rack (32) provided on the loading arm (20).

The gear stopper (30) is operated by engaging the start lever (12) at its upper end.

Reference numeral (22) is a chucking arm having a disc retainer (34) at its tip, which is swingably supported by the machine frame (1) via a pivot shaft (35) at the base end. , Is always pulled downward by the spring (36), but is pushed up by the stat pin (38) of the chucking lever (37) when not loaded. The chucking lever (37) is engaged with the tip of the loading arm (20) through a pin (39) and an elongated hole (40), and rotates counterclockwise as the loading arm (20) swings. The disc retainer (34) is rotated to move it to the chucking position.

A stop lever (42) that prevents the start lever (12) from returning when the start lever (12) moves to the start position is pivotally supported by the machine frame (1) coaxially with the chucking lever (37). The stop lever (42) is also engaged with the pin (39) of the loading arm (20) through the elongated hole (43).

In addition, a slide lever (44) that moves in the horizontal direction in conjunction with the loading arm (20) is provided in the machine frame (1), and a slide chassis (46) for supporting the pickup (45) when not loaded. The pawl (47) is configured to engage with an engaging groove (48) provided in the stop lever (44) and stably hold the same.

The pickup (45) is a pickup support (45a)
And the pickup support (45a) is attached to the two guide shafts (4) fixed to the chassis (46).
It is mounted so as to be movable along 9). The pickup support body (45a) is driven by a motor (50). The chassis (46) that supports the pickup (45) is attached to the machine frame (1) through the cushion material (51) and the spring (52) with appropriate cushioning properties.

Further, as shown in FIGS. 10 to 13, the disc retainer (34) is attached to the tip of the chucking arm (33) via a chucking holder (53). The chucking holder (53) includes a tubular portion (53A), a plurality of, for example, three locking pieces (53B) extending in the radial direction, which are bent and formed at an upper end edge of the tubular portion (53A), and a tubular portion. The thin portion (53C) is bent at the lower end of the shape portion (53A) and is integrally drawn with a metal plate such as a thin copper plate. Further, the chucking arm (33) is provided with three insertion holes (54) through which the locking pieces (53B) can penetrate, at intervals in the circular direction, and the inner edge of the insertion hole (54). A thin groove portion (54A) extending in the same direction on the same circle is provided on one side of each portion. Therefore, the disc holder (3
After attaching the chucking holder (53) to the dowel (55) formed on the upper surface of 4) via the retaining ring (56), insert the locking piece (53B) of the chucking holder (53) into the insertion hole ( 54) and turn it to the locking piece (53
By engaging B) with the narrow groove (54A), the disc holder (34) can be easily moved with one touch by the chucking arm (3
It can be attached to 3). still,
At this time, the locking pin (58) formed on the upper surface of the chucking arm (33) is provided in the recess (57) formed at the tip of the locking piece (53B).
To prevent the chucking holder (53) from rotating.

Next, the operation will be described.

First, insert the 8 cm disc (D1) by hand from the opening (2) by hand, the optical sensor (60) detects it and the loading motor (22) rotates, and the driving loading roller (18) and the driven loading roller (18). The disc (D1) is fed inward by (19). While pressing the kick lever (8) on the outer peripheral surface of the disc (D1), left and right 8 cm disc stoppers (13) (13)
Centered by and stopped at a fixed position.

On the other hand, the movement of the kick lever (8) causes the start lever (12) to move toward the front side of the machine frame (1) to swing the gear stopper (30) to the disengaged position. As a result, the engagement of the flexion arm (27) is released and the antifriction arm (27) is rotated counterclockwise by friction with the flexion gear (24), and the loading gear (29A) is fixed to the loading arm (20). Mesh with (32). This engagement causes the loading arm (20) to swing downward together with the rack (32). This rack (32)
And the loading gear (29A) are disengaged from each other, the reversing spring (61) causes the reversing spring (61) to rotate to the final lower loading position (see FIG. 5).

With the rotation of the loading arm (20), the driven loading roller (19) is also avoided downward.

Further, when the loading arm (20) rotates, the chucking lever (37) rotates counterclockwise and the disc retainer (34) presses the disc (D1), and holds the chuck with the lower turntable. To do. When the chucking of the disk (D1) is completed, a chucking switch (not shown) attached to the disk (D1) is turned on and the loading motor (22) is stopped. At the same time, the stop lever (4
2) operates to lock the locking claw (12A) of the start lever (12), prevent it from returning, and maintain the loading state.

Simultaneously with the stop of the loading motor (22), the pickup servomotor (50) is driven to move the pickup support (45a), and the pickup (45) scans and reproduces the recording surface of the disc (D1). It is a thing.

When the reproduction of the disc (D1) is completed, the pickup support body (45a) returns to its original position and stops, and the loading motor (22) rotates in the reverse direction. This causes the deflection arm (27) to rotate clockwise and the loading gear (29
A) engages the rack (32). After that, the above-described operation is reversed to return to the original position of FIG.

Next, the loading operation of the 12 cm disc (D2) will be described.

In Fig. 1, insert a 12cm disc (D2) through the front opening (2), and the left and right guide levers (5)
The rollers (7) and (7) of (5) are pressed and the guide levers (5) and (5) are synchronized and pushed outward to expand the center of the disc (D2). Further, as in the case of the 8 cm disc (D1), the loading motor (22) is driven by the optical sensor (60) and the disc (D2) is sent to the back by the loading rollers (18) and (19).

The plunger lever (9) moves inward in conjunction with the guide lever (5) on the right side, and the shaft (14) rotates due to the engagement between the rack (16) and the gear (15), for 8 cm discs. The stopper (13) avoids the upward direction. At the same time, the 12cm disc selection switch (not shown) is turned on.
Then, the plunger (62) is energized, and the plunger lever (9) is sucked and held in the back. This holds the 8 cm disc stopper (13) in the avoidance position. When the disc (D2) is fed further in, the kick lever (8)
While swinging, slide the stoppers (1
7) Centered by (17) and stopped at a fixed position.

After that, each part mechanism operates in the same manner as the above-mentioned operation for the 8 cm disc (D1).

Although the representative embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiment structures, and may be appropriately modified within the scope of having the constituent features and effects of the present invention. Of course, it can be implemented.

"Effect of the invention" Since the invention is constructed as described in detail above, the reflection arm (27) is always the reflection gear (29A) (29A).
Since it is urged in the rotation direction of B), the loading arm (20) and loading rack (32) can be easily installed by simply releasing the gear stopper (30) that holds this movement in the rotation direction. It is possible to swing it to the chucking position by engaging with it, which makes it possible to easily configure a series of loading mechanisms. Further, the chucking mechanism is provided with a disc retainer (3
4) a chucking arm (33) provided at the tip, and a chucking lever (37) for locking the chucking arm (33) in a non-chucking position. The chucking arm (33) is disengaged by rotating with the swing of the loading arm (20), and the chucking arm (33) is moved to the spring (3).
Since it is formed so as to move to the chucking position by 6), it smoothly interlocks with the loading arm (20) to hold the disc (D1) (D2) in place (34).
Can be chucked by. In addition, a kick lever (8) that moves in contact with the discs (D1) and (D2) when the discs (D1) and (D2) are sent to a fixed position.
In addition, a start lever (12) that moves to a start position in association with the kick lever (8) is provided, and the movement of the start lever (12) releases the locking of the reflection arm (27) and the reflection arm (27). The loading arm (20) is formed so as to swing by the rotation of the (27), and when the loading arm (20) swings, the chucking mechanism operates to bring the disc holder (34) to the chucking position. It is configured to move, and further, when the loading arm (20) is moved to the chucking position, the stop lever (42) is provided to prevent the return of the start lever (12) in conjunction with this, so that the chucking operation is performed. At the same time, there is a remarkable effect that the respective loading mechanisms can be surely held in operation and thus stable reproduction can be achieved.

[Brief description of drawings]

FIG. 1 is a plan view of the disc player according to the present invention with an exterior body removed, FIG. 2 is a rear view thereof, FIG. 3 is a front view thereof, FIG. 4 is a right side view thereof, and FIG. 5 is a loading state. FIG. 4 is a right side view similar to FIG. 4, FIG. 6 is a left side view showing the loading state of the loading roller, FIG. 7 is a left side view of a part showing the loading roller not fed, and FIG. FIG. 9 is an enlarged side view showing the operation gear portion, FIG. 9 is a right side view showing the chucking arm portion, FIG. 10 is an enlarged sectional view of the disc pressing portion, FIG. 11 is an enlarged plan view of the chucking holder, and FIG. FIG. 13 is an enlarged plan view showing the insertion hole portion of the chucking arm, and FIG. 13 is a plan view of FIG. (D1) …… 8cm disc (D2) …… 12cm disc (1) …… machine frame (8) …… kick lever (12) …… start lever (20) …… loading arm (22) …… loading motor ( 24) …… Fraction gear (27) …… Reflection arm (29A) (29B) …… Loading gear (32) …… Loading rack (33) …… Loading arm (34) …… Disk holder (36)… … Spring (37) …… Chucking lever (42) …… Stop lever

Claims (1)

[Scope of utility model registration request] 1. In a disc player for reading and reproducing information recorded on a disc (D1) (D2), a reflection gear (24) driven by a loading motor (22) and the reflection gear (24). To the machine frame (1), the friction arm (27) that is in sliding contact with and is biased to rotate in the gear rotation direction, the loading gears (29A) and (29B) supported by the reflection arm (27). The loading gear (29A) is swingably supported.
It consists of a loading arm (20) with a loading rack (32) that meshes with it, and also a disc (D1).
Disc (D1) when (D2) is fed into place
A kick lever (8) that swings in contact with (D2) and a start lever (12) that moves to a start position in conjunction with the kick lever (8) are provided, and the movement of the start lever (12) causes the reflection to occur. The loading arm (20) is formed so as to swing by the rotation of the reflection arm (27) by releasing the locking of the arm (27), and a chucking mechanism when the loading arm (20) swings. Is operated to move the disc retainer (34) to the chucking position, and the chucking mechanism includes a chucking arm (33) having the disc retainer (34) at its tip.
And a chucking lever (37) for locking the chucking arm (33) in a non-chucking position. The chucking lever (37) rotates together with the swinging motion of the loading arm (20). Chucking arm (33)
Is formed so as to move the chucking arm (33) to the chucking position by the spring (36) when the loading arm (20) moves to the chucking position. The stop lever (4) that interlocks to prevent the start lever (12) from returning
2) equipped with a disc player.