JPH02235255A - Disk player - Google Patents

Abstract

PURPOSE:To reduce manual operation force and to improve operability by providing a disk player with a spring member for exciting a disk carrying member on the carrying position side. CONSTITUTION:A part of the spring member 33 is wound around the outer periphery of a dumper member 28 and the dumper member 28 is rotated in accordance with the extension of the spring member 33. Thereby, the extension of the spring member 33 is interferred by the dumper member 28 and a disk carrying member 5 is moderately carried out. Since the spring member 33 is wound around the dumper member 28, a spring member having sufficiently long free length and a low spring constant can be used as the spring member 33. Consequently, the manual operation force required at the time of carrying the member 5 into a player body 1 can be reduced, the variation of operation force due to the extension of the member 33 is reduced and the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is configured to manually transport a disc transport mechanism such as a disc tray into a player main body, and
The present invention relates to a disc player in which the disc transport mechanism is transported out of the player body by the urging force of a spring member.

[Conventional technology]

Conventionally, optical playback devices such as compact disc players have generally been positioned as high-end products, and the loading and unloading of discs into and out of the device is usually a tray type device.
This is done electrically and automatically. That is, a disk transport member such as a disk tray having a disk mounting section is driven by a motor via a speed reduction mechanism. However, in this case, unless the timing of meshing between the rack attached to the disk transport member and the driving gear of the motor is accurately controlled, malfunction will occur due to poor meshing between the rack and the gear. Therefore, there was a problem in that an opening/closing means was required to accurately control the meshing timing. Further, it is necessary to match the locking timing and unlocking timing of the locking means for locking the disk transport member at the loading position with the meshing timing of the gear and the rack, and it is also necessary to ensure a combination of the locking means and the opening/closing means. There were complications such as having to take into consideration the following.

In order to eliminate the above-mentioned problems and provide a device with a simpler structure and lower cost as compact disc players become more widespread, the applicant has decided to manually move the disc transport member inside the player body. We have previously filed a patent application for a disc player that is configured to be carried into the player and removed from the player body by the biasing force of a biasing member such as a spring (Japanese Patent Application No. 63-252445).
．． (Problem to be Solved by the Invention) However, in the above configuration, when the disk drive mechanism is carried out due to the biasing force of the spring, there is a risk that the disk drive mechanism will be carried out forcefully with an impact. Operation tends to become unstable and there is a risk of damage to the disk. [Means for Solving the Problems] In order to solve the above problems, the disc player according to the invention of claim 1 in the claims column of this specification has a player main body and a disc mounting section. a disc transport member movably supported by the player body between a disc ejection position and a disc loading position; an annular damper member rotatably supported by the player body; and a spring member whose other end is connected to the disc transport member via the outer periphery of the damper member and biases the disc transport member toward the unloading position.

Further, the disc player according to the invention of claim 2 in the claims column is the disc player of claim 1, wherein the outer periphery of the damper member prevents slipping between the damper member and the spring member. It is characterized by a frictional contact portion formed therein.

[For production]

According to the structure of claim 1, a part of the spring member is wound around the outer periphery of the damper member, and the damper member rotates as the spring member expands and contracts. The disc transport member is cushioned by the member, thereby allowing the disc transport member to be carried out slowly. Also, since the spring member is wound around the damper member, the free length of the spring member is sufficiently long, and therefore a spring member with a low spring constant can be used, which makes it easier to carry the disc transport member into the player body. It is possible to reduce the manual operating force required to perform the operation, and also to reduce fluctuations in the operating force due to expansion and contraction of the spring member, thereby improving operability.

Next, in the disc player according to claim 2, since the friction contact portion is provided on the outer periphery of the damper member to prevent slipping between the damper member and the spring member, the damper member can buffer the unloading of the disc transport member. This will be done more reliably.

〔Example〕

An example common to claims 1 and 2 in the claims section of this specification will be described below with reference to FIGS. 1 to 8.

As shown in FIG. 1, the compact disc player according to this embodiment has a chassis l as a part of the player body.
is supported on the chassis 1 so that it can move up and down in the direction of the arrow ■ or j, and is a compact disc (hereinafter referred to as C
A CD drive mechanism 3 serves as a disk drive mechanism that performs rotational driving of 2 (referred to as D) and reads information on the CDZ, and an elevating mechanism that raises and lowers the CD drive mechanism 3 by moving in the direction of arrow E or F on the chassis 1. a disc tray 5 serving as a disc transport member for mounting and storing the CD 2 and moving in the direction of the arrow EF between the unloading position (FIG. 2) and the loading position (FIG. 5) on the chassis 1; It is equipped with The configuration of each part will be explained in detail below. As shown in FIG. 2, at both ends of the chassis 1,
A pair of side plates 6 and 7 facing each other are attached. A lifting plate 4 is arranged on the chassis 1 between these side plates 6 and 7. The right side plate 7 is attached to the rack 1, which will be described later, after the lifting plate 4 is placed on the chassis 1.
3 is attached to the chassis 1 so that the right end of the lifting plate 4 is located outside the side plate 7 via relief grooves 7a provided at the lower end of the side plate 7. Guide pins 1a, 1a, . . . are provided on the chassis 1, and these guide pins 1a, 1a, .
... is fitted. As a result, the lifting plate 4
is movable in the EF direction on the chassis 1 with a stroke corresponding to the length of the guide holes 4a, 4a, . As shown in FIG. 4, the elevating plate 4 is formed with a plurality of vertical wall portions 4b extending in the EF direction. Each standing wall portion 4b is provided with a restriction recess 4C, a release recess 4d provided closer to the E direction and lower than the restriction recess 4C, and an inclined recess 4e extending between the two. It is being done. A regulating pin 3a projecting laterally from the CD drive mechanism 3 is movably fitted into one of the recesses 4C to 4e of each standing wall portion 4b. When the elevating plate 4 is located at the end in the E direction and each regulating pin 3a is located in the regulating recess 4C, the CD drive mechanism 3 is held at the upper position, and the elevating plate 4 is moved in the F direction. The CD drive mechanism 3 is held at the lower position when each regulating pin 3a is located in the release recess 4d. The lifting plate 4 is biased in the E direction by a spring 8 stretched between an integrally provided spring hook 4f and a spring hook 7b of the side plate 7. As shown in FIG. 6, a horizontal fulcrum shaft 7c is provided on the outside of the side plate 7. A spring 10 is attached to the fulcrum shaft 7C.
and the unloading operation lever 11 are fitted, and the stopper 12
This prevents it from coming off. One end of the spring 10 is attached to the side plate 7
The other end is locked to the spring hook 7d, and the other end is the unloading operation lever 1.
1, and thereby the unloading operating lever 11 is biased in the C direction. The unloading operation lever 11 is provided with an operation part 1lb for pressing downward with a finger, that is, in the D direction. In addition, the side plate 7 has
A contact portion 7j that limits the amount of rotation of the unloading operating lever 11 in the C direction by coming into contact with the unloading operating lever 11
is provided. At the end in the E direction of the lifting plate 4 located outside the side plate 7, there is a contact portion 4 bent upward.
g is provided. 20 The contact portion 4g is adapted to come into contact with the pressing portion 11c of the unloading operation lever 1l at the unloading position. Then, when the unloading operation lever 11 is rotated in the D direction using the operation section 1lb, the abutment section 4g is moved to F.
The elevation plate 4 is configured to move in the F direction against the urging force of the spring 8 by being pressed in the direction F. A rack 13 is attached to the right end of the lifting plate 4 located outside the side plate 7. Above the rack 13, the side plate 7 has a gear 1 that meshes with the rack 13.
The damper member 14 that rotatably supported the damper member 4a is connected to the screw hole 7e.
- Attached with small screws 15, 15 that screw into 7e. Thereby, the movement of the lifting plate 4 in the EF direction is damped by the damper member 14, so that the lifting plate 4 moves slowly. As shown in FIG. 5, the chassis 1 is provided with a fulcrum pin 1e. A first lever 16 is rotatably inserted into the fulcrum pin 1e through an insertion hole 16a, and a spring 17 is attached to the fulcrum pin 1e below the first lever l6.
is inserted. The spring 17 has one end locked to the spring hook 16b of the first lock lever l6, and the other end locked to the end 7f of the side plate 7, so that the first lock lever 1
6 is biased in the direction of arrow A.

The first lock lever 16 has an engaging portion 16c that protrudes downward.
is provided, and this retaining portion 16c engages with a lock portion 4h provided on the lifting plate 4 to hold the lifting plate 4 at the moving end in the F direction against the biasing force of the spring 8. (See Figure 2). Further, a first lock lever 1 is provided near the lock portion 4h of the lifting plate 4.
A contact portion 4l is provided with which the retaining portion 16c of No. 6 comes into contact when the retaining portion 16c comes off the lock portion 4h.
The first lock lever 16 is provided with a contact portion 16d,
The contact portion 16d is capable of contacting an end surface 5l located at the end of the disk tray 5 in the F direction. As shown in FIG. 4, a plurality of mounting holes 3b, 3b, . . . are provided at both ends of the CD drive mechanism 3 in the EF direction. Each attachment hole 3b is fitted into a holding bin 1b provided vertically on the chassis 1 via a sleeve 19 so as to be movable up and down. A flange 19a having a larger diameter than the mounting hole 3b is provided at the lower end of the sleeve 19.
It is located further down. Flange 19a and chassis 1
A chucking spring 18 that presses the CD drive mechanism 3 upward is inserted into the outer periphery of the holding bottle 1b between the two. Above the flange 19a on the outer periphery of each sleeve 19, a cylindrical anti-vibration rubber 20 is arranged which is attached to the attachment hole 3b of the CD drive mechanism 3 at the attachment part 20a and is held on the upper side of the CD drive mechanism 3. ing. The axial length of the vibration isolating rubber 20 is set so that its upper end 20' is located slightly above the upper end of the sleeve 19 in the free state shown in FIG. A washer 21 is fitted into the holding pin 1b above the vibration isolating rubber 20, and an E-ring 22 for preventing the washer 21 from coming off is attached to the upper end of the holding pin 1b.
is fixed. Regulation holes 3c and 3c (
(see Figure 2). Each regulation hole 3c is fitted with a regulation pin 1c installed upright on the chassis 1 with a slight margin, and vibrations of the CD drive mechanism 3 in the horizontal plane are regulated by the regulation pin 1c/IC. There is.

The CD drive mechanism 3 is provided with a turntable 23 for supporting and rotating the CD 2, and an optical pickup 24 for reading optical signals on the CD 2. The turntable 23 is attached to the output shaft 29a of the motor 29, and also has a lower support 2 that supports the lower part of the CD 2.
3a, and a sloped portion 23b that fits into the chucking hole 2a provided in the center of the CD 2 as the CD drive mechanism 3 rises, and performs centering while absorbing the positional deviation of the CD 2.
A suction plate 23c is provided at the upper end of the slope portion 23b, and attracts and holds the CD 2 between it and a magnet 27c of a clamp member 27, which will be described later. Above the turntable 23, a base frame 25 is provided on the upper surface of both side plates 6 and 7.
The screws 26 pass through the mounting holes 25a, 25a, and are screwed into the screw holes 6a, 6a, 7g, 7g of the side plates 6, 7.
It is attached by 26... A hole 25b is provided in the center of the base frame 25, and a clamp member 27 is rotatably supported within the hole 25b.

The clamp member 27 includes a holding part 27a that presses the CD 2 onto the lower support 23a of the turntable 23, and an inclined recess 27b into which the slope part 23b of the turntable 23 is fitted.
A magnet 27c is inserted into the center of the clamp member 27, attracts the attraction plate 23c of the turntable 23 with magnetic force, and holds the CD 2 between the turntable 23 and the base frame 25 around the hole 25b. Fall prevention plate 27 that prevents the clamp member 27 from falling by being supported on the upper surface of the
d. As shown in FIG. 8, the CD drive mechanism 3 includes a threaded shaft 3d extending in the longitudinal direction for feeding the optical pickup 24,
The screw shaft 3d is rotatably supported by a pair of bearings 3e and 3f. The screw shaft 3d is rotatably screwed into the screw hole 24a of the optical pickup 24, and the screw shaft 3d
A guide shaft 3g extending parallel to the optical pickup 24 is movably fitted into the hole 24b of the optical pickup 24.

A worm wheel 3h is attached to the end of the screw shaft 3d in the E direction. On the side of the worm wheel 3h, a motor mounting portion 3l is integrally provided in the CD drive mechanism 3, and a motor 3j is mounted to the motor mounting portion 31 with screws 38, 38. A worm 3k is provided on the shaft of the motor 3j, and the worm 3k is meshed with a worm wheel 3h. As a result, the motor 3j rotates the screw shaft 3d, and as the screw shaft 3d rotates, the optical pickup 24 moves in the E or F direction on the CD drive mechanism 3 along the screw shaft 3d and the guide shaft 3g. It looks like this.

As mentioned above, the motor 3j is installed in the immediate vicinity of the turntable 23, and the screw shaft 3d is connected from the motor 3j.
Since power is transmitted to the worm using a minimum gear transmission mechanism consisting of only the worm 3k and worm wheel 3h, space can be reduced, and
Since the weight of the motor 3j is equally distributed in the direction of the arrow GH with respect to the center of the turntable 23, the vibration isolating rubber 20.
0... can be made symmetrical with respect to the center of the turntable 23, so the CD drive mechanism 3 can be downsized. Thereby, when the CD drive mechanism 3 is raised, the entire CD drive mechanism 3 is inserted into the later-described relief hole 5C of the disc tray 5, thereby making it possible to make the disc player thinner.

As shown in FIG. 2, guide grooves 5a are formed at both ends of the disc tray 5. As shown in FIG. Guide groove 5a
- 5a is slidably fitted into guide pieces 6b and 7h provided on the inner upper part of the side plates 6 and 7, respectively. This results in
The disk tray 5 is capable of reciprocating in the E or F direction with respect to the chassis 1 between an unloading position and an loading position.

A horizontal fulcrum shaft 6C is provided inside the side plate 6, and a pulley 28 serving as an annular damper member is rotatably fitted to the fulcrum shaft 6C. Inside Pooh 1J28,
A spring 30 and a washer 31 are further attached to the fulcrum shaft 6c, and are prevented from coming off by an E-ring 32. Pulley 2
8 is provided with resistance to rotation by the biasing force of the spring 30.

One end of a carry-out spring 33 as a spring member is locked to the spring hook 1d of the chassis 1, and the carry-out spring 33 forms a substantially U-shape by wrapping around the outer periphery of the pulley 28 and changing direction. The end portion is locked to a spring hanging pin 5b provided on the disc tray 5. A plurality of grooves 28a, 28a, . . . are formed in the boot IJ28 as friction contact portions that engage with the spring 33 for carrying out, thereby preventing slippage between the boot 28 and the spring 33 for carrying out.

The disc tray 5 is biased in the E direction by an unloading spring 33. As mentioned above, the unloading spring 33 has a U-shape by passing through the pulley 28, so the unloading spring 33 can be used with a long free length to lower the spring constant. can. Therefore, the operating force when manually operating the disc tray 5 in the F direction against the biasing force of the unloading spring 33 can be sufficiently reduced, and the fluctuation of the operating force can also be reduced.

Further, the spring 33 for carrying out is loaded by the spring 30 and is wound around the pulley 28 which has a function as a damper.
buffered by As a result, the movement of the disk tray 5 in the E direction based on the biasing force of the unloading spring 33 also becomes gentle. In addition, a screw 34 that can be engaged with the spring hook pin 5b of the disc tray 5 is screwed into the screw hole 6d of the side plate 6 so as to protrude inside the side plate 6. When you move in the direction of
The spring hook pin 5b engages with the screw 34, and the amount of movement of the disc tray 5 in the E direction is restricted.

The disc tray 5 is provided with an escape hole 5c to avoid interference between the turntable 23, optical pickup 24, etc. and the disc tray 5 as the CD drive mechanism 3 rises at the loading position. A storage section 5d for storing the CD2 is provided around the escape hole 5c, and the storage section 5d is formed to be slightly larger than the outer shape of the CD2.

Further, an inclined receiving part 5e is formed around the storage part 5d as a disc mounting part for receiving the lower part of the CD 2.

Further, on both sides of the receiving portion 5e, notches 5f are provided at both ends of the disc tray 5 to avoid interference between the CD 2 and the side walls of the disc tray 5, and to facilitate loading and unloading of the CD 2. is provided. In addition, the inner walls of the side plates 6 and 7 facing the notches 5r and 5f at the loading position of the disc tray 5 are provided with C during rotation of the CD 2.
Notch 6e to avoid interference between D2 and side plates 6 and 7
・71 is formed.

A spring 35 is inserted above the first lock lever 16 at the fulcrum pin 1e. A second lock lever 36 is rotatably inserted through the insertion hole 36a above the spring 35, and is prevented from coming off by an E-ring 37. The spring 35 is stretched between the spring hook 16e of the first lock lever 16 and the spring hook 36b of the second lock lever 36, so that the second lock lever 36 is biased in the direction of arrow B. The first lock lever 16 is biased in the A direction. The second lock lever 36 has a contact portion 36c that is connected to the first lock lever 36.
By coming into contact with the spring hook 16e of the lock lever 16, the amount of rotation in the direction B relative to the first lock lever 16 is restricted.

The second lock lever 36 is provided with a lock portion 36d,
The lock portion 36d holds the disc tray 5 at the loading position by engaging with a locking groove 5h formed in the right side wall 5g of the disc tray 5 when the disc tray 5 is at the loading position. ing. In the above configuration, as shown in FIGS. 2 to 4, when the disc tray 5 is being carried out, the spring loaded pin 5b of the disc tray 5 comes into contact with the screw 34 as described above. It is held at the unloading position against the biasing force of the unloading spring 33. At this unloading position, the retaining part 16c of the first lock lever 16 engages with the locking part 4h, so that the lifting plate 4 is prevented from moving in the E direction by the biasing force of the spring 8.
It is located at the end of movement in the F direction.

Therefore, the CD drive mechanism 3 is held in the lower position by each regulating pin 3a being located within the release recess 4d. Therefore, the turntable 2 on the CD drive mechanism 3
3 is configured such that even if the disc tray 5 is carried in the F direction together with the CD 2, the turntable 23 does not come into contact with the disc tray 5 and the CD 2 that are moving in the F direction.

Also, at the lower position of the CD drive mechanism 3, the vibration isolating rubber 20
No load is applied to the CD drive mechanism 3, and the upper end 20b of the vibration isolating rubber 20 is simply held on the CD drive mechanism 3.
is located at a slightly higher position than the upper end of the sleeve 19. In this lower position, only the chucking spring 18 is in a bent state.

Further, the clamp member 27 is lowered by its own weight, and the fall prevention plate 27d is in contact with the upper surface of the base frame 25. Even if the CD 2 is carried in by the disc tray 5 in this state, the clamp member 27 The holding portion 27a is designed not to contact the CD 2 while it is moving in the F direction. In the above-described unloading state, the CD 2 is placed on the receiving portion 5e of the disc tray 5, and the disc tray 5 with the CD 2 placed thereon is manually pressed in the direction of the arrow F against the biasing force of the unloading spring 33. It is moved from the carry-out position shown in FIGS. 2 to 4 to the carry-in position shown in FIGS. 5 to 7. Then, disk tray 5
Slightly before the end of the movement stroke, the end surface 51 of the disc tray 5 touches the contact portion 16d of the first lock lever 16.
As the disc tray 5 moves in the F direction, the first lock lever l6 rotates in the direction of arrow B against the biasing force of the spring 17. Accordingly, the second lock lever 36 whose lock portion 36d is in contact with the side wall 5g can also be rotated in the direction B by the biasing force of the spring 35. Therefore, after that, when the disc tray 5 moves to the loading position, the second
The lock lever 36 rotates in the direction B and locks the lock portion 36d.
is fitted into the locking groove 5h of the disc tray 5, and the disc tray 5 is locked at the loading position. Also, as the first lock lever 16 rotates in the B direction, the engaging portion 16c
comes off from the lock part 4h of the lifting plate 4 and the abutting part 4
1, and the rotation of the first lock lever 16 in the direction B is completed. Then, by disengaging the retaining part 16c from the locking part 4h, the lock at the moving end in the direction of the lifting plate 40F by the first lock lever 16 is released, so that the lifting plate 4 is moved by the attachment of the spring 8. It begins to move in the E direction due to the force. As the elevating plate 4 moves in the E direction, each regulating pin 3a of the CD drive mechanism 3 moves from the releasing recess 4d of the elevating plate 4 to the inclined recess 4e, and is further restricted within the inclined recess 4e. Move to the recess 4c side. As a result, the CD drive mechanism 3 moves in one direction within the clearance hole 5c of the disc tray 5 due to the biasing force of the chucking spring 18. At that time, the rack 13 provided on the lifting plate 4
Since it meshes with the gear 14a of No. 4, the lifting plate 4
The movement in the E direction is performed slowly, and therefore the movement of the CD drive mechanism 3 in one direction is also performed slowly.

As the CD drive mechanism 3 moves in one direction, the slope portion 23b of the turntable 23 first engages with the chucking hole 2a of the CD 2, and when the CD drive mechanism 3 further moves up, the slope portion 23b engages with the chucking hole 2a of the CD 2. Inclined recess 2 of clamp member 27
7b, and the CD 2 is chucked by the attraction force between the magnet 27c and the attraction plate 23c (see Figure 7).
．． After that, when the CD drive mechanism 3 further rises, the fall prevention plate 27d separates from the base frame 25, and a gap is formed between the fall prevention plate 27d and the base frame 25. In this state, the CD drive mechanism 3
a fits into the regulating recess 4c and reaches the highest position. When the CD drive mechanism 3 reaches the highest position, the sleeve l9 comes into contact with the E-ring 22 via the washer 2l as the chucking spring l8 expands, and the vibration isolating rubber 20
When 0b comes into contact with washer 21, it will be slightly bent. Note that the amount of deformation of the vibration isolating rubber 20 is the same as that of the sleeve 1.
9 and is always constant, the height of the CD drive mechanism 3 in the state where the CD 2 is chaffed is also always constant, and the CD 2 is held reliably.

In the above-mentioned chucking state, the CD drive mechanism 3, CD 2, and clamp member 27 are integrally floated independently from the chassis 1 etc. by the chucking spring 18 and the vibration isolating rubber 20. This provides vibration resistance against vibrations that may occur in the chassis 1 and the like. here,
Relative vibration of the CD drive mechanism 3 with respect to the chassis 1 etc. is caused by the gap between the regulation pin 3a and the regulation recess 4c and the regulation hole 3.
This occurs within the gap between C and the regulation pin IC. In addition, in the above-mentioned floating state, while the CD 2 is being rotated by the turntable 23, the optical pickup 24 reads the signals on the CD 2.

As described above, when the disc tray 5 is manually moved to the loading position, the elevating plate 4 automatically moves in the E direction, and the CD drive mechanism 3 and the clamp member 27
The configuration allows for chucking, so operation is easy. Also, as the disk tray 5 moves in the F direction, the first
When the lock lever 16 begins to rotate in the direction B, the spring 3
5, the second lock lever 36 can be rotated in the direction B, and the lock part 36d of the second lock lever 36 is positioned on the right side of the disc tray 5 before the lock part 36d of the second lock lever 36 reaches the locking groove part 5h of the disc tray 5. As soon as the locking portion 36d reaches the locking groove 5h, the second locking lever 36 locks the disc tray 5 at the loading position. Furthermore, as described above, the movement of the lifting plate 4 in the E direction is carried out gently as it is buffered by the damper member 14, and therefore
Since the D drive mechanism 3 is also raised slowly, the turntable 23 does not damage the CD 2 when chucking the CD 2, and noise during loading can be reduced.

Next, the operation when moving the disc tray 5 from the carry-in position to the carry-out position will be explained.

To unload the disc tray 5 from the state shown in FIGS. 5 to 7, move the operating portion 1lb of the unloading operation lever 11 to
When pressed in the direction, the lifting plate 4 is brought into contact with the pressing part 11c of the unloading operation lever 1.1 at the loading position.
The abutment part 4g is pressed in the F direction by the pressing part 11c as the unloading operation lever 11 rotates in the D direction, and as a result, the elevating plate 4 resists the biasing force of the spring 8 and moves in the F direction.
Move in the direction. Then, each regulating pin 3a of the CD drive mechanism 3 moves from the regulating recess 4c of the lifting plate 4 to the releasing recess 4d via the inclined recess 4e. Along with this, the CD drive mechanism 3 moves as shown by arrow J against the urging force of the chucking spring 18.
Move in the direction. As the CD drive mechanism 3 moves in the J direction, the fall prevention plate 27d of the clamp member 27 moves against the base frame 25.
The turntable 23 and the clamp member 2
The chucking state of CD2 due to the magnetic force between CD2 and CD7 is released. After that, when the CD drive mechanism 3 further moves in the J direction, the CD 2 is placed on the receiving part 5e of the disc tray 5, the engagement between the CD 2 and the turntable 23 is released, and the lowest position is reached. .

When the lifting plate 4 moves to the end in the F direction while lowering the CD drive mechanism 3, the first lever 16 is rotated in the A direction by the biasing force of the spring 17, so that the lifting plate 4 is moved. The retaining portion 16 that was engaged with the contact portion 41
c engages with the lock portion 4h, whereby the lifting plate 4 is locked at the end in the F direction. Further, since the contact portion 36c of the second lock lever 36 is in contact with the spring hook 16e of the first lock lever 16, the second lock lever 36
As the lock lever 16 rotates in the A direction, the second lock lever 36 also rotates in eight directions. As a result, the locking portion 36d separates from the locking groove 5h of the disc tray 5, and the disc tray 5 is unlocked at the loading position. As a result, the disc tray 5 moves in the E direction together with the CD 2 due to the biasing force of the unloading spring 33, and reaches the unloading position. Here, as mentioned above, the contraction of the unloading spring 33 is carried out gently as it is buffered by the pulley IJ28 which is provided with resistance to rotation by the biasing force of the spring 30, and therefore the unloading of the disc tray 5 is also performed slowly. It will be done. In that case, grooves 28a provided in the pulley 28, 28a...
This prevents slippage between the pulley IJ 28 and the unloading spring 33, so that the buffer provided by the pulley 28 is ensured.

As described above, since the CD 2 is unloaded after lowering the CD drive mechanism 3 to make it out of contact with the CD 2, the CD 2 is not damaged during unloading, and the unloading operation lever l1 The CD2 can be easily ejected by simply performing the following operations.

〔Effect of the invention〕

As described above, the disc player according to the invention of claim 1 in the claims column of this specification has a player main body and a disc mounting section, and the player main body allows the player main body to move the disc to and from the unloading position and the loading part. a disc transport member supported movably between positions; an annular damper member rotatably supported by the player body; one end connected to the player body; This configuration includes a spring member whose end is connected to the disk conveying member and urges the disk conveying member toward the unloading position. As a result, a part of the spring member is wound around the outer circumference of the damper member, and the damper member rotates as the spring member expands and contracts, so that the expansion and contraction of the spring member is buffered by the damper member, and as a result, the disc The conveyance member is now slowly carried out.

In addition, since the spring member is wound around the damper member, a spring member with a sufficiently long free length and a low spring constant can be used, which makes it possible to use a spring member with a sufficiently long free length and a low spring constant. In addition to reducing the manual operating force of the spring member, it is also possible to reduce fluctuations in the operating force due to expansion and contraction of the spring member, thereby improving operability.

Next, the disc player according to the invention of claim 2 in the scope of claims is the disc player of claim 1, wherein the outer periphery of the damper member has a slip between the damper member and the spring member. This is a configuration in which a frictional contact portion is formed to prevent this.

As a result, since a frictional contact portion is provided on the outer periphery of the damper member to prevent slippage between the damper member and the spring member, the damper member provides more reliable buffering.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention, in which FIG. 1 is an exploded perspective view of a compact disc player;
Figure 2 is a plan view of the compact disc player at the unloading position, Figure 3 is a side view of the same at the unloading position, Figure 4 is a sectional view taken along line X-X in Figure 2, and Figure 5 is a compact disc player at the loading position. FIG. 6 is a plan view of the disc player, FIG. 6 is a side view of the disc player at the loading position, FIG. 7 is a sectional view taken along line Y--Y in FIG. 5, and FIG. 8 is a perspective view of the CD drive mechanism. 1 is the chassis (player body), 2 is the CD (disc)
, 5 is a disk tray (disk transport member), 28 is a pulley (damper member), 28a is a groove (frictional contact part), 33
is the unloading spring (spring member).

Claims (1)

[Scope of Claims] 1. A player main body, a disc transport member having a disc mounting section and supported movably between a disc ejection position and a disc loading position by the player main body, and a disc transport member that is rotatable by the player main body. a ring-shaped damper member that is freely supported; and a spring that has one end connected to the player body, the other end connected to the disc transport member via the outer periphery of the damper member, and biases the disc transport member toward the ejection position. A disc player comprising: a member. 2. The disc player according to claim 1, wherein a friction contact portion is formed on the outer periphery of the damper member to prevent slippage between the damper member and the spring member.