JP3375002B2 - Disc loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to loading of a disk such as an optical disk or a magneto-optical disk into an information recording / reproducing apparatus such as a disk player. It concerns the device. Conventionally, as a disk loading device of this type, a cartridge containing a disk is loaded into a cartridge holder from a cartridge insertion slot, and a slider is guided by a guide member provided on a chassis. In this case, the cartridge holder is lowered so that the disc is loaded on a deck. [0003] However, in the above-mentioned loading device, the guide shaft and the guide groove for moving the cartridge holder and the slider along the guide of the guide member have only a guiding function. In addition, when a cartridge is loaded into a cartridge holder, a complicated switch mechanism or a complicated driving means such as a rack and pinion must be used to drive an electric motor for loading. In addition, since these switch mechanisms and driving means occupy a considerable installation space in the rear or lower part of the chassis, there is a drawback that the entire device becomes large. Therefore, the present applicant has previously provided a rotating cam and some members attached to the rotating cam, so that a compact and simple mechanism can be provided on the side of the chassis.
We have proposed a disc loading device that can control the switch mechanism and achieve the loading operation. There, a disc cartridge is loaded into the cartridge holder from the cartridge insertion slot, and guided by a guide member provided on the chassis via a slider.
A disk loading device is configured to lower the cartridge holder and load the disk onto a deck. However, in the above-described loading device,
A rotating cam for loading or unloading the cartridge holder, and an operation guiding element coaxially supported so as to interlock with the rotating cam, and when the rotating cam and the operation guiding element rotate, the rotating cam and Since the operator of the switch mechanism for driving the electric motor enters the gap between the operation inducing elements, there is a drawback that the rotary cam does not move. The present invention relates to a structure of a motion guiding element, a rotary cam, and a switch mechanism for driving an electric motor used in the loading device. An object of the present invention is to provide a disk loading device in which the operation element of the switch mechanism is not engaged with the operation guiding element side during a typical operation. [0007] Therefore, the disk loading apparatus of the present invention is provided with a rotating cam on the side of the chassis for driving the cartridge holder containing the disk by the electric motor, and further comprises a rotary cam. A disc loading device comprising a motion guiding element supported coaxially with a rotating cam, and a switch mechanism for driving the electric motor being turned on / off by an operation unit provided on the motion guiding element. The operation portion of the motion guiding element is extended to a position overlapping the operation portion of the rotary cam. According to the present invention, since the extended portion of the operation portion of the operation guiding element functions to prevent engagement of the operator of the drive switch mechanism, a smooth switching operation can always be ensured. An embodiment of the present invention will be specifically described below with reference to the drawings. As shown in FIG. 1, the disk loading device according to the present invention has a cartridge insertion port with a shutter on the front surface of an outer case 1 and a cartridge 3 having a built-in disk from the insertion port. The cartridge holder 4 is loaded into the holder 4 and guided by the guide member 6 provided on the fixed chassis 5 via the slider 7 to lower the cartridge holder 4 to load the disk onto the deck (not shown). ing. [0010] The loading device will be described in more detail.
As driven by an electric motor (not shown) for loading and unloading the cartridge holder 4,
A rotating cam 8 is rotatably supported on a side of the fixed chassis 5 and is driven by an electric motor via a suitable gear train. An operation guiding element 10 is supported on the side of the fixed chassis 5 coaxially with the rotating cam 8.
With respect to the rotation direction, it is connected to the rotating cam 8 via an elastic means 11 ′ which is a tension coil spring so as to interlock with the rotating cam 8 with a time lag. The operation inducing element 10 and the rotary cam 8 are provided with arc-shaped operation units 10A and 8A having the same radius and having a phase shifted in the circumferential direction, respectively, and correspond to the operation units 10A and 8A. On the side of the fixed chassis 5, a switch mechanism 12 for driving an electric motor such as a micro switch that is turned on / off by the operation units 10A and 8A is provided. The operation unit 10A is formed in a substantially L-shape so that the operator of the switch mechanism 12 can be continuously pressed, and forms an extension. Further, as shown in detail in FIGS. 5 and 6, the operation inducing element 10 extends a part of the operation part 10A in the rotation direction to a position overlapping with the operation part 8A of the rotating cam 8, The switch mechanism 12 is opposed to a push button-shaped operator 12A. On the other hand, the rotary cam 8 is formed with a notch 8C for receiving an extended portion of the operation unit 10A in a rotation area facing the operator 12A of the switch mechanism 12. As shown in FIG. 2, when loading the cartridge 3 into the cartridge holder 4,
In this embodiment, a first operating mechanism 13 for moving the slider 7 along a first guide (described later) of the guide member 6 is provided on the slider 7 at each of the left and right sides of the cartridge holder 4. L-shaped cartridge set member 13A and a torsion spring for holding the cartridge 3 at one end of the cartridge set member 13A.
Spring 13B and cartridge set member 13A
And a slit guide 13C provided on the guide member 6 for guiding the other end of the guide member 6. The cartridge set member 13A has an engaging element 13D, which is its original purpose. When the cartridge 3 is completely loaded in the cartridge holder 4, the engaging grooves 3A formed on both sides of the cartridge 3 are formed. It can be fitted to. The movement of the slider 7 by the first operating mechanism 13 rotates the operation inducing element 10 and turns on the switch mechanism 12 for driving the electric motor. Is provided with a pin-shaped operation element 14 which also functions as a pin. In addition, a finger-shaped guiding portion 10B pressed by the operation element 14 is formed in the motion guiding element 10. A guide slit 6A (corresponding to the above-described first guide) for guiding the operation element 14 as a guide shaft is formed in the guide member 6. This guide
The slit 6A extends horizontally with respect to the guide member 6, and is bent vertically downward at the end thereof. In this embodiment, pin-shaped members 14 ′ and 14 ″ merely functioning as guide shafts are provided on the slider 7,
Correspondingly, the guide member 6 has guide slits 6A ′ and 6A ″ having substantially the same shape as described above.
Are formed. The operation member 14 is moved to the first position by the rotation of the rotary cam 8.
The movement guiding element 10 pushed by the arm portion 8B of the rotary cam 8 so as to move along the guide, that is, the guide slit 6A, is provided with a shift member 15 for pushing the operation element 14. Also, when the operation member 14 is shifted by the shift member 15, the second guide of the guide member 6, in this embodiment, the vertically extending guide slit 6
Along B, a second operating mechanism 16 for lowering and loading the cartridge holder 4 is provided.
The operating mechanism 16 is, in this embodiment, a cartridge cartridge.
A guide shaft provided on the holder 4;
And slidably fitted in the guide slit 6B of the guide member 6 through a horizontally extending guide slit 7A '. In the above-described embodiment, the rotation cam 8 and the operation guiding element 10 are used to load and unload the recording head (in this embodiment, the magnetic head) 17 with respect to the disk loaded on the deck in the rotation area. In order to perform the loading, the structure is such that the supporting means 18 of the recording head 17 can be operated so as to be linked to the supporting means 18. That is, the support means 18 is a support member constituted by an elastic leaf spring, and is pivotally supported by the movable chassis 19 with a horizontal support shaft 18A extending leftward and rightward at the base end, so that the distal end is directed upward. And is held by a tension coil spring 20. The movable chassis 19 includes the fixed chassis 5.
It is supported by a screw main shaft and a sub shaft (not shown) rotatably supported with respect to the left and right. When the screw main shaft rotates by driving an electric motor (not shown), recording of information and the like on a disk is performed. , A feed operation (access) for reproduction. The movable chassis 19 is provided with a recording / reproducing head (for example, an optical head) facing the recording head 17. The guide member 6 is provided with another guide slit 6C extending vertically, and an L-shaped shift member 24 having a guide shaft 24A slidably fitted therein is provided on the fixed chassis 5 side. It is provided in a state where it is held upward. That is, in this embodiment, the shift member 24 is provided with a guide roll 24B, which is
8B, the structure is supported upward. However, the shift member 24 has the engaging portion 24
C is formed, and the guiding portion 10B of the motion guiding element 10 can be engaged here. For this reason, the engagement portion 24
C is located at the end side of the rotation area of the guiding portion 10B. In such a configuration, when the cartridge 3 is loaded into the cartridge holder 4, the first operation mechanism 13 operates as shown in FIG. That is, the cartridge setting member 13A is pushed by the tip of the cartridge 3, and the engaging element 13D is fitted into the engaging groove 3A. In this state, the cartridge 3 is further moved to the cartridge holder 4.
When the slider 7 is moved inward, the slider 7 moves horizontally, and when the guide 14B of the operation guide element 10 is pressed by the operator 14, the operator 1
By pressing 2A, the switch mechanism 12 is turned on. As a result, the electric motor is driven, the rotary cam 8 rotates, and the operation section 8A takes over the ON operation of the switch mechanism 12. In this case, even if there is a gap in the rotation direction as shown by reference numeral C in FIG. 6 between the operation guiding element 10 and the rotary cam 8, the operation unit 10A is extended.
The operator 12A is pressed by the extended portion of the operation unit 10A, and therefore, it is possible to prevent the operator 12A from entering the gap C and becoming engaged. Then, the shift member 15 is
To guide the operator 14 to the vertically descending portion of the guide slit 6A, and further slide the guide shaft (second operation mechanism 16) with respect to the guide slit 6B. In this way, the disc can be loaded on the deck by lowering the cartridge holder 4. This state is a play state (see FIG. 3). To enter the recording state, as shown in FIG. 4, the rotating cam 8 is further rotated to engage the engaging portion 24C of the shift member 24 with the guide portion 10B, and the shift member 24 is lowered. This causes the recording head 17 to approach the disk surface. As described above, in the disk loading device of the present invention, the rotating cam is provided on the chassis side for driving the cartridge holder containing the disk by the electric motor, and is supported coaxially with the rotating cam. An operation inducing element is provided, and a switch mechanism for driving the electric motor is turned on / off by an operation unit provided in the operation inducing element.
A disc loading device configured to perform an off operation, wherein the operation unit of the operation guiding element is extended to a position overlapping with the operation unit of the rotary cam. According to the present invention, as described in detail above, a cartridge containing a disk is loaded into a cartridge holder from a cartridge insertion port, and the slider is guided by a guide member provided on a chassis. Through
When loading the disc onto the deck by lowering the cartridge holder,
For the rotation cam driven by an electric motor for loading and unloading the holder, to coaxially support an operation guiding element interlocked with the rotation cam via elastic means, and to drive the electric motor. A drive switch mechanism configured to be turned on / off by an operation unit provided on the operation guiding element, wherein the operation guiding element overlaps the rotating cam with respect to the rotation direction. And is opposed to the operator of the drive switch mechanism. For this reason, even if the operation guiding element and the rotary cam rotate relatively, the extended portion of the operation part of the operation guiding element functions to prevent the engagement of the operator of the switch mechanism, so that the switch is always smooth. Operation can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view relatively showing an operation state of each member in a loading operation process of an embodiment of the present invention. FIG. 2 is a plan view of a main part when a cartridge is inserted according to the embodiment of the present invention. FIG. 3 is a side view showing an operation state of each member in a reproduction state. FIG. 4 is a side view showing an operation state of each member in a recording state. FIG. 5 shows a configuration of an operation guiding element and a rotary cam,
(A) is a side view, (b) is a front view. 6 (a) and 6 (b) show the relative operation of the motion guiding element and the rotary cam, wherein FIG. 6 (a) is a side view and FIG. 6 (b) is a front view. FIG. 7A is a perspective view of a rotary cam, and FIG. 7B is a perspective view of an operation guiding element. [Description of Signs] 1 Outer case 3 Cartridge 3A Engagement groove 4 Cartridge holder 5 Fixed chassis 6 Guide member 7 Slider 8 Rotating cam 8A Operation section 8B Arm section 8C Notch section 10 Motion guiding element 10A Operation section 11 Elastic means 12 Switch mechanism 13 First operation mechanism 14 Operator 15 Shift member 16 Second operation mechanism

Claims (1)

(57) [Claim 1] A rotating cam is provided on a side of a chassis for driving a cartridge holder containing a disk by an electric motor, and an operation guide supported coaxially with the rotating cam. A disc loading device configured to provide an element and a switch mechanism for driving the electric motor to be turned on and off by an operation unit provided in the operation induction element, wherein the operation unit of the operation induction element is A disk loading device characterized in that it is configured to extend to a position overlapping with the operation part of the rotating cam.