JP3401631B2 - Electronic equipment having a disc insertion / ejection mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insertion mechanism for pulling a disk inserted from an insertion opening of a front panel of an apparatus body into the apparatus body and fixing the disk on a turntable. And an ejection mechanism for ejecting a disk fixed on a turntable from an insertion slot to the outside of the device main body. 2. Description of the Related Art In recent years, CDs (Compact Discs) have become widespread. For example, in addition to a conventional cassette deck, a CD player has become standard equipment in a car. Unlike a CD player of an audio device used indoors, such a vehicle-mounted CD player does not have a configuration in which a disc is placed on a tray provided on the device main body side and inserted into the device main body. That is, an in-vehicle CD player has an insertion (loading) mechanism for pulling a disc inserted directly from an insertion slot of a front panel of a device main body into the device main body and fixing the disc on a turntable, And a discharge (eject) mechanism for directly discharging the disk fixed to the device from the insertion slot to the outside of the device main body. In general, a tray-type CD player or the like is provided with a so-called emergency mechanism for forcibly ejecting the tray when power is not supplied for some reason while a disc is loaded. However, in-vehicle CD players and the like which are not tray types do not have such an emergency mechanism, so that a CD player or the like which has stopped operating due to a power failure or the like has a problem. There was a problem that it could not be taken out. SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object the provision of an emergency mechanism even in a non-tray-type in-vehicle CD player or the like so that a disc can be forcibly ejected. An electronic device having a mechanism is provided. [0005] In order to solve the above-mentioned problems, an electronic apparatus having a disk insertion / ejection mechanism according to the present invention includes a disk inserted from an insertion opening of a front panel of the apparatus main body into the apparatus main body. An insertion mechanism for retracting and fixing on the turntable, an ejection mechanism for ejecting the disc fixed on the turntable from the insertion opening to the outside of the device main body, and a drive source for the insertion mechanism and the ejection mechanism. And the insertion mechanism is driven by a sliding operation in a forward direction, and the ejection mechanism is driven by a sliding operation in a backward direction. A slide plate to be driven; a power gear linked to the slide plate; a first gear meshing with a gear mounted on a drive shaft of the motor; A second gear for transmitting a driving force of the motor to the power gear. The double gear includes a second gear attached to a rotating shaft to which the first gear is attached. A gear is inserted, and a rotating shaft between the first gear and the second gear is
A friction member for transmitting the rotational force of the first gear to the second gear by a constant frictional force is fitted, and the friction member forcibly slides the slide plate, thereby connecting the power gear. The second gear is provided so as to rotate while sliding against the first gear against frictional force when a rotational force equal to or more than a predetermined value is applied to the second gear via the second gear. . Embodiments of the present invention will be described below with reference to the drawings. FIG. 7 is a perspective view of a device main body of an in-vehicle CD player which is an embodiment of the electronic device of the present invention. The front panel 82 of the device main body 81 is provided with a disc insertion slot 83 for inserting the disc D, and an emergency hole 84 is opened. Although not shown, various function buttons are also attached. FIG. 1 is a perspective view of the structure of a disk insertion / ejection mechanism of a vehicle-mounted CD player as one embodiment of the electronic apparatus of the present invention, as viewed from the bottom side (ie, viewed from the bottom side up). FIGS. 2 and 3 are exploded perspective views of main members constituting the disk insertion / ejection mechanism shown in FIG. [0008] An upper guide 3 is attached to the front edge 2 of the chassis 1 (the side near the disk insertion opening 83 of the device main body 81) so as to be attached to the chassis 1 and faces the upper guide 3. A roller 4 is attached. The roller 4 is supported by the support shaft 16 of the roller support plate 8.
The roller support plate 8 is rotatably supported by pins 7 on upright pieces 5 and 6 on both right and left sides of the chassis 1. That is, by rotating the roller support plate 8 about the pin 7, the roller 4 approaches (ups) and separates (downs) from the upper guide 3. However, the roller 4 is always urged by the spring 10 bridged between the roller support plate 8 and the chassis 1 so as to contact (or approach) the upper guide 3. Therefore, when the disk D is not inserted into the device main body 81, the roller 4 is in contact with the upper guide 3 (or there is a gap enough to hold the disk D between the roller 4 and the upper guide 3). State). A clamp arm 51 for mounting and fixing the disk D on a turntable (not shown) is provided on the rear side of the chassis 1 (the side opposite to the disk insertion port 2).
Is rotatably supported by a pin 52 (movable up and down with respect to the turntable). The clamp arm 51 is always urged by the spring 53 toward the turntable (upward in FIG. 1). The upright piece 6 on one side of the chassis 1 has a pair of sliding pins 12, 12 at its front end and rear end.
The slide plate 11 is attached so that the slide holes 13 are supported by the slide pins 12 and slidable in the front-rear direction. The slide plate 11 has a rear slide pin 12 and a locking hole 1 formed in the slide plate 11.
4 is always drawn rearward (in the direction of the arrow Y). A stepped long hole 15 is formed near the front side of the slide plate 11, and a support shaft 16 of the roller 4 is inserted into the long hole 15 to move the roller 4 up and down. The mechanism is formed. That is, the slide plate 11 slides in the arrow Y direction, and the support shaft 16
Is located on the upper side 15a of the elongated hole 15 (the lower side in the drawing), the roller 4 rises and comes into contact with the upper guide 3, and the slide plate 1
When the support shaft 16 slides in the direction of the arrow X and the support shaft 16 is located on the lower side 15b (the upper side in the drawing) of the elongated hole 15, the roller 4 descends and the upper guide 3 From the farthest. A step-like long hole 61 is formed near the rear side of the slide plate 11.
A second cam mechanism for moving the clamp arm 51 up and down is formed by inserting a support pin 54 formed on one side edge of the clamp arm 51 into the clamp arm 51. That is, when the slide plate 11 slides in the arrow Y direction and the support pin 54 is located on the upper side 61a of the elongated hole 61 (the lower side in the drawing), the clamp arm 51 is raised. Then, the slide plate 11 slides in the direction of arrow X, and the support pin 54 is positioned on the upper side 61 b of the elongated hole 61. In this state, the clamp arm 51 is lowered to be closest to the turntable (in FIG. 1, the clamp arm 51 moves upward and chucks the disk D placed on the turntable). A motor support plate 21 is attached to the upper end edge 6a of the upright piece 6 by screws 22, and the motor support plate 21 transmits a motor 23 as a drive source and a driving force of the motor 23. And a double gear portion 25 for mounting. The double gear portion 25 is a first gear 2
A second gear 28 is inserted into a rotating shaft 27 to which the first gear 26 and the second gear 2 are attached.
The friction member 30 that transmits the rotational force of the first gear 26 to the second gear 28 by a constant frictional force is inserted into the rotation shaft 27 between the first and second gears 8 and 8. The first gear 26 meshes with a worm gear 24 attached to a drive shaft of a motor 23, and the second gear 28 meshes with a power gear 31 described later. The details of the double gear portion 25 will be described later. Further, a support shaft 17 is provided on the standing piece 6,
A power gear 31 is rotatably supported on the support shaft 17 with the elongated hole 18 formed in the slide plate 11 being inserted therethrough. The power gear 31 has an outer large-diameter gear 31a.
And the inner small-diameter gear 31b are integrally formed, and the large-diameter gear 31a is a roller gear 1 attached to the second gear 28 and the distal end of the support shaft 16 of the roller 4.
9 to transmit the driving force of the motor 23 to the roller 4. The roller gear 19 does not always mesh with the large-diameter gear 31a.
Is on the upper side 15a of the elongated hole 15 and the inclined portion 1
5c, it meshes with the large-diameter gear 31a,
When located on the lower side 15b, the large-diameter gear 31a
It is out of the state. Further, a pair of slide pins 35, 35 are formed in the slide plate 11 below the elongated hole 18, and the slide holes 36, 36 are supported by the slide pins 35, 35. The slide member 37 is attached so as to be slidable in the front-rear direction. The slide member 37 has, at its upper end edge, a rack gear 3 meshing with the small-diameter gear 31b of the power gear 31.
8 are formed. The slide member 37 is always pulled rearward by a spring (not shown).
The first small diameter gear 31b and the rack gear 38 do not mesh with each other. When the slide member 37 is slid forward, the small-diameter gear 31b of the power gear 31 and the rack gear 38 mesh for the first time. The slide plate 41 (see FIG. 2) is a member for sliding the slide member 37 forward, is inserted between the upright piece 6 and the slide plate 11, and has a rear slide member. The sliding holes 42, 42 are supported by the pins 12 and the support shaft 17, and are slidably provided in the front-rear direction. Also, slide plate 4
1 is in a state of being always drawn rearward (in the direction of the arrow Y) by the spring 44. An extruded piece 43 bent in an L-shape is formed on the lower end edge near the front of the slide plate 41, and the extruded piece 43 moves the rear end face 39 of the slide member 37 forward (in the direction of the arrow X). To extrude. Although not shown, the slide plate 41 is forcibly slid forward (when the diameter of the power gear 31 is small) by the solenoid attached to the rear side of the upright piece 6 when the disc D is inserted. The gear 31b is slid until it meshes with the rack gear 38). FIGS. 3 and 4 show a specific configuration of the double gear portion 25. FIG. A flange-shaped pressure contact plate 27 is provided on the other end of the rotary shaft 27 having the first gear 26 attached to one end thereof.
a of the first gear 26 and the pressure contact plate 2
Support shafts 27b and 27c are formed so as to penetrate through the shaft 7a. A flange-shaped pressure contact plate 28a is also formed on one end side of the second gear 28. Then, the friction member 30 and the second gear 28 are sequentially fitted and inserted into one of the support shafts 27c, so that the pressure contact plate 27a of the rotating shaft 27 and the pressure contact plate 28a of the second gear 28 Is to be clamped. A spring 29 is fitted on the other support shaft 27b. For this reason, the friction member 30 causes the two pressure contact plates 27a, 2
8a always clamps with a constant pressing force.
That is, when the first gear 26 is rotated, the two pressure contact plates 2
The second gear 28 is rotated by a constant frictional force generated between the friction members 30 and 7a, 28a. This is because when the first gear 26 is rotated in one direction and a force equal to or more than a predetermined frictional force is applied to the second gear 28 in the reverse rotation direction, the two pressure contact plates 27a and 28a This means that a slip occurs at a contact portion with the friction member 30. In other words, when the first gear 26 is stopped and a rotational force equal to or more than a predetermined frictional force is applied to the second gear 28, the second gear 28 slides at a contact portion between the two pressure contact plates 27a and 28a and the friction member 30. , Which means that the second gear 28 can be forcibly rotated. The structure of the double gear portion 25 realizes an emergency mechanism described later. Next, the operation of the above-configured disk insertion / ejection mechanism will be described with reference to FIGS. First,
The loading operation and the ejecting operation of the disk D will be described, and then the operation of the emergency mechanism by the disk insertion / ejection mechanism of the present invention will be described. First, the loading operation of the disk D will be described. The disk insertion / ejection mechanism before loading the disk D is in the state shown in FIG. That is, the slide plate 11 is fully on the rear side (position B in the figure).
The support shaft 16 of the roller 4
Are located on the upper side 15a of the elongated hole 15, and the support pins 54 of the clamp arm 51 are located on the upper side 61a of the elongated hole 61, respectively. Therefore, the roller 4 rises and comes into contact with the upper guide 3 (that is, the disk D can be held between the roller 4 and the upper guide 3), and the clamp arm 51 also rises and turns. It is in a state away from a table (not shown). Further, since the slide plate 41 is also at a position where it is drawn to the full rear side by the urging force of the spring 44, the slide member 37 is also drawn to the rear side by the urging force of a spring (not shown). Therefore, the rack gear 38 of the slide member 37 is located behind the small-diameter gear 31b of the power gear 31 and is not meshed with the small-diameter gear 31b. In this state, when the disc D is inserted from the disc insertion opening 83 of the apparatus main body 81 and the insertion end portion is slightly inserted between the roller 4 and the upper guide 3, the disc D is inserted. Detected by a sensor (not shown), the motor 23 is driven in the loading direction (hereinafter referred to as the forward rotation direction), and the solenoid is energized to slide the slide plate 41 forward (in the direction of the arrow X). As a result, the first gear 26 of the double gear portion 25 rotates forward through the worm gear 24, and the second gear 28 rotates forward by a constant frictional force generated between the two pressure contact plates 27a, 28a and the friction member 30. Then, the power gear 31 meshed with the second gear 28 rotates forward. On the other hand, the slide member 37 is pushed forward by the pushing piece 43 of the slide plate 41 that slides to the front side, and the rack gear 38 meshes with the small diameter gear 31b. As a result, the rotation of the motor 23 is
Since the power is transmitted to the rack gear 38 via the power gear 31 and the slide member 37 slides all the way to the front side, the slide plate 11 starts to slide forward by being pushed by the slide member 37. At this time, the large diameter gear 31 of the power gear 31
The disc D is drawn into the apparatus main body 81 by the forward rotation of the roller gear 19 meshing with a. Then, when the disk D is pulled onto the turntable, the slide plate 11 also slides all the way to the front side (position A in the drawing), and as a result, the support shaft 16 of the roller 4 is elongated.
The support pin 54 of the clamp arm 51 is
Move to the lower side 61b of the elongated hole 61, respectively. As a result, the roller 4 is lowered and separated from the upper guide 3 (that is, the state where the disk D is released), and the clamp arm 51 is lowered and the disk D is chucked on the turntable. Becomes FIG. 6 shows this state. This allows
The disc D is loaded on the turntable, and becomes ready for reproduction. Next, the ejection operation of the disk D will be described. When the eject button provided on the front panel 82 of the device main body 81 is operated in the state shown in FIG.
The motor 23 drives in the ejection direction (hereinafter, referred to as the reverse rotation direction). As a result, the first gear 26 of the double gear portion 25 reversely rotates through the worm gear 24, and the second gear 28 reversely rotates due to a constant frictional force generated between the two pressure contact plates 27a and 28a and the friction member 30. Then, the power gear 31 meshed with the second gear 28 rotates in the reverse direction. As a result, the reverse rotation of the small diameter gear 31b is transmitted to the rack gear 38, and slides the slide member 37 backward (in the direction of the arrow Y), so that the slide member 37 follows the sliding operation of the slide member 37 backward. And slide plate 11
Also slides backward. When the slide plate 11 slides all the way to the rear side and stops, the rack gear 3
8 is disengaged from the small-diameter gear 31b, and the slide member 37 is further slid to the rear side by a spring (not shown) and stopped. As a result of the sliding of the slide plate 11 in this manner, the support shaft 16 of the roller 4 located on the lower side 15b of the elongated hole 15 moves to the upper side 15a and is positioned on the lower side 61b of the elongated hole 61. The supporting pin 54 that has been
Go to Therefore, the clamp arm 5 that has been lowered
1 rises again to release the disk D on the turntable, and the lowered roller 4 rises again,
The opened end of the disc D is sandwiched between the disc D and the upper guide 3. When the support shaft 16 moves from the lower stage 15b to the upper stage 15a, the released roller gear 19 meshes with the large-diameter gear 31a. Therefore, the raised roller 4 meshes with the large-diameter gear 31a. Due to the reverse rotation of the roller gear 19, the disk D rotates in the disk discharge direction (reverse rotation direction), and the sandwiched disk D is discharged from the disk insertion port 83 to the outside of the device main body 81. Next, the operation of forcibly ejecting the disk D out of the device main body 81 when the power supply is stopped for some reason with the disk D loaded in the device main body 81 will be described. The state of the disk insertion / ejection mechanism when the power is not supplied for some reason in a state where the disk D is loaded in the device main body 81 is the same as the state shown in FIG. Therefore, in order to forcibly eject the disk D, a small-diameter screwdriver or a wire member such as a clip is inserted through an emergency hole 84 provided in the front panel 82 of the apparatus main body 81, and the slide plate 11 is inserted. , The front plate 32 is pushed rearward, and the slide plate 11 is forced to slide from the position A to the position B. In this case, the slide plate 11 meshes with the rack gear 38 of the slide member 37 and the small-diameter gear 31b of the power gear 31 to form the large-diameter gear 31 of the power gear 31.
a and the second gear 28 of the double gear portion 25 mesh with each other, and the first gear 26 and the worm gear 24 mesh with each other and are linked to the rotating shaft of the motor 23. 11 cannot be pushed backward. However, the disk insertion / ejection mechanism of the present invention
As described above, the first gear 26 and the second gear 28 of the double gear portion 25 have a structure in which rotation is transmitted by a constant frictional force of the friction member 30. Therefore, even if the first gear 26 meshes with the worm gear 24 and is linked to the rotating shaft of the motor 23, if the second gear 28 is provided with a reverse rotating force equal to or more than a predetermined frictional force, the two pressure contacts are performed. Slip occurs at the contact portion between the plates 27a and 28a and the friction member 30, and only the second gear 28 can be rotated in the reverse direction. That is, when the second gear 28 rotates in the reverse direction, the power gear 31 also rotates in the reverse direction, and the reverse rotation of the small-diameter gear 31b is transmitted to the rack gear 38, and the disk D
The same operation as the eject operation is performed. Accordingly, the operator forcibly pushes the disk D by pushing the front edge 32 of the slide plate 11 rearward with a force sufficient to apply a reverse rotation force equal to or more than a predetermined frictional force to the second gear 28. It can be discharged in a targeted manner. According to the electronic apparatus having the disk insertion / ejection mechanism of the present invention, the insertion mechanism for pulling the disk inserted from the insertion opening of the front panel of the apparatus main body into the apparatus main body and fixing the disk on the turntable is provided. And a discharge mechanism for ejecting the disc fixed on the turntable from the insertion opening to the outside of the device main body, a motor serving as a drive source for the insertion mechanism and the discharge mechanism, and sliding in the front-rear direction on the chassis of the device main body. A slide plate that is mounted so as to be capable of being driven, the insertion mechanism is driven by a sliding operation in a forward direction, and the ejection mechanism is driven by a sliding operation in a rear direction, a power gear linked to the slide plate, and a motor. A first gear meshing with a gear attached to the drive shaft of the first motor and a second gear meshing with a power gear, and transmitting the driving force of the motor to the power gear. A double gear portion, and the double gear portion
The second gear is inserted into the rotating shaft to which the first gear is attached, and the rotating force of the first gear is applied to the rotating shaft between the first gear and the second gear by a constant frictional force. Second
The friction member that transmits to the gear is inserted, and this friction member
By forcibly sliding the slide plate, the second gear slides against the first gear against the frictional force when a certain rotational force is applied to the second gear via the power gear. It is configured to rotate while rotating.
With this, when power is not supplied for some reason with the disc loaded in the device body, insert a wire member such as a small-diameter screwdriver or clip through the hole for emergency provided on the front panel of the device body. Then, the disc can be forcibly ejected from the apparatus main body by pushing the front edge of the slide plate backward.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an in-vehicle C according to an embodiment of the electronic apparatus of the present invention.
It is the perspective view seen from the bottom surface side which shows the structure of the disc insertion / ejection mechanism part of D player. FIG. 2 is an exploded perspective view of main members constituting the disk insertion / ejection mechanism shown in FIG. FIG. 3 is a plan view of a double gear portion. FIG. 4 is an exploded perspective view showing constituent members of a double gear unit. FIG. 5 is a side view showing a state of a disk insertion / ejection mechanism before a disk is loaded into a device main body. FIG. 6 is a side view showing a state of a disk insertion / ejection mechanism when a disk is loaded into the apparatus main body. FIG. 7 is an in-vehicle C according to an embodiment of the electronic apparatus of the present invention.
It is a perspective view of the apparatus main body of D player. [Description of Signs] 1 Chassis 4 Roller 6 Standing piece 11 Slide plate 15 Slot 16 Support shaft 19 Roller gear 23 Motor 24 Worm gear 25 Double gear 26 First gear 27 Rotary shaft 28 Second gear 29 Spring 30 Friction member 31 Power gear 51 Clamp arm 54 Support pin 61 Slot D disk

Claims (1)

(57) [Claims] [Claim 1] An insertion mechanism for pulling a disk inserted from an insertion opening of a front panel of a device main body into the device main body and fixing the disk on a turntable, and fixing on a turntable. Ejecting mechanism for ejecting the disc from the insertion opening to the outside of the device body, a motor serving as a drive source for the insertion mechanism portion and the ejection mechanism portion, and slidably attached to the chassis of the device body in the front-rear direction. A slide plate driven by the sliding mechanism in the forward direction to drive the insertion mechanism, and the sliding mechanism in the backward direction driven by the discharge mechanism; a power gear linked to the slide plate; and the motor A first gear meshing with a gear attached to the drive shaft of the motor, and a second gear meshing with the power gear, and transmitting the driving force of the motor to the power gear. A double gear portion, wherein the double gear portion is configured such that the second gear is inserted into a rotating shaft to which the first gear is attached, and the rotation between the first gear and the second gear is performed. A friction member that transmits the rotational force of the first gear to the second gear with a constant frictional force is fitted into the shaft, and the frictional member forcibly slides the slide plate, The second gear is provided so as to rotate while sliding against the first gear against a frictional force when a rotational force equal to or more than a predetermined value is applied to the second gear via the power gear. An electronic device having a disk insertion / ejection mechanism.