JPH0240163A - Eject button device - Google Patents

Abstract

PURPOSE:To improve usability without changing the position of the front plane of a button part and to simplify structure by providing a recessed part at the button part, inserting a sliding plate slidably freely to the recessed part, interposing a spring member between them, and providing a connecting part for preventing looseness to be engaged with a housing at the button part. CONSTITUTION:The recessed part is provided at the button part 26, and the sliding plate 12 is inserted to the recessed part slidably freely, and the spring member 27 to press the button part 26 in a direction opposite to a pressing direction is interposed between the button part 26 and the sliding plate 12, and the connection part 37 for preventing the looseness to be engaged with the housing 2 is provided at the button part 26. In such a way, since the spring member 27 is supported with the button part 26 and the sliding plate 12, and also, the button part 26 is supported with the sliding plate 12, the position of the front plane of the button part can be maintained at the same level at the time of ejecting and also loading a medium, and the structure can be simplified and the number of components can be reduced, then, workability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an eject button device, and particularly to an eject button device suitable for a disk drive device such as a magnetic disk cartridge.

[Conventional technology]

Conventionally, a disc cartridge is inserted into a cartridge holder held at the eject position via a slide plate, and the inserted disc cartridge unlocks the slide plate at the eject position, thereby releasing the cartridge holder together with the disc cartridge. A disk drive device is known that is positioned at a load position and then performs recording/reproduction operations at this load position.

As an eject button device for this type of disk drive device, a button portion is attached to the slide plate and integrated therewith. Then, by pressing the button part, the slide plate is slid to move the cartridge holder from the loading position to the ejecting position, thereby performing an ejecting operation.

[Problem to be solved by the invention]

However, in the conventional technology, the button part moves together with the slide plate, and since the position of the slide part from the front of the device is different between the eject position and the load position, the button part moves together with the slide plate. The position of the buttons from the front will also be different. In other words, since the position of the front of the button is different when ejecting and loading,
The appearance was poor and the usability was poor.

To solve this problem, an eject button device has been proposed in which the front surface of the button is in the same position during ejection and loading, but the structure is complex, the number of parts is large, and the assembly process is time-consuming. was involved.

The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to provide the same position of the front surface of the button part during ejection and loading, to have a simple structure, and to reduce the number of parts. An object of the present invention is to provide an eject button device that can reduce the amount of noise, improve workability, and improve economic efficiency.

[Failure to solve the problem]

In order to achieve the above object, the present invention includes a housing;
In the eject button device, the eject button device comprises a button portion slidably provided with respect to the housing, and a slide plate held in at least two different positions during loading or non-loading by operation of the button portion. A recess is provided in the button part and the slide plate is slidably inserted thereinto, and a spring member is interposed between the button part and the slide plate to urge the button part in a direction opposite to the pressing direction.
The button part is provided with a locking part for preventing the button from coming off, which engages with the housing.

[Effect]

With the above means, the spring member is supported by the button part and the slide plate, and the button part is also supported by the slide plate, so separate support members are not required for the spring member and the button part, and the number of parts is reduced. I can do it, and also.
Since the button part is inserted into the slide plate with a spring member interposed between the slide plate and the button part, assembly work can be easily performed by simply inserting the button part and engaging the locking part. Improves sex. In this way, it is possible to obtain a compact eject button device in which the front surfaces of the button parts are in the same position.

(Example〕 Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIGS. 1(a), (b), and (c) are cross-sectional views of essential parts showing the eject button device according to the present invention in the loading, ejecting, and unused states, and FIG. 2(a),
(b) is an exploded perspective view showing the front and rear states of the compression spring installation of the same eject button device, and Figures 3 (a) and (b)
, (c), (d) are a plan view, front view, side view, and longitudinal sectional view of the button part, Fig. 4 (a), (b) are a plan view and side view of the slide plate, and Fig. 5 is a Front view of a disk drive device to which the same eject button device is applied, No. 6
The figure is a plan view showing the disk drive device with the cover removed.

First, the schematic structure of the disk drive device will be explained with reference to FIGS. 5 and 6. Reference numeral 1 denotes a floppy disk drive device, and this disk drive device 1 has a chassis 2 that is a housing. At a predetermined position of this chassis 20, there is a disk rotation shaft 3, a carriage 4 on which a magnetic head is mounted, a guide shaft 5 that guides the movement of this carriage 4, and a screw shaft 6 that engages with the carriage 4 and moves the carriage 4. , a stepping motor 7 for rotating the screw shaft 6 by a predetermined amount, and the like are arranged.

A pair of side plates], a are integrally provided on both sides of the chassis 1, and a cartridge holder 8 made of synthetic resin is arranged vertically movably inside the side plate 1a. This cartridge holder 8 is held downward (sixth
In the figure, it is biased in a direction perpendicular to the plane of the paper. Also,
Engagement pins il, 11 are protruded from both sides of the cartridge holder 8, and a slide plate I2 provided with a vertically movable cam that engages with the engagement pins 11 is disposed. Further, the cartridge holder 8 is provided with an eject lever 13 that stores a force for ejecting the disk cartridge, and the cartridge holder 8 faces above the disk rotating shaft 3. The overall structure is as shown above.

The eject lever 13 is rotatably supported by a support shaft 14 protruding from the upper surface of the cartridge holder 8.
A coil spring 15 stretched between the cartridge holder 8 and the protrusion 8a always elastically biases the cartridge holder 8 in the direction of the cartridge insertion opening, that is, in the counterclockwise direction in FIG. This eject lever 13 has an abutting portion 1 at its tip.
6, and when a magnetic disk cartridge (not shown) inserted into the cartridge holder 8 contacts this contact portion 16 and rotates the eject lever I3, a spring force is stored in the coil spring 15. Further, the support shaft 14 of the cartridge holder 8 is also provided protrudingly provided on the lower surface side, and a lock plate 17 is rotatably supported by the support shaft 14 on the lower surface side. It is biased counterclockwise in FIG. 6 by a coil spring (not shown). The lock plate 17 is provided with an engaging portion 1.7a that engages with the eject lever 13, an abutting portion that engages with the slide plate 12 (not shown), and a lock portion.

In addition, the cartridge insertion slot of the cartridge holder 8 ] 8
A guide member 19, which is a member to prevent jumping out, is provided. This guide member 19 is formed by molding synthetic resin, and has a long plate shape with rotating shafts 20 and 20 at both ends.
is provided protrudingly, and this rotation shaft 20.20 connects to a notch-shaped bearing portion 21 and a courtesy-shaped bearing portion 22 provided in the cartridge holder 8.
It is fitted and supported. A torsion coil spring (not shown) is wound around the base of the rotation shaft 20.

Further, an inclined surface 23 is formed on the front side of the lower surface of the guide member 19, that is, on the cartridge insertion port 18 side, so that the magnetic car 1
- The ridge is inserted smoothly. Furthermore, contact portions 24 and 24 are formed on the rear side of both ends of the lower surface of the guide member 19, respectively. This contact part 24
extends to the rear of the guide member 19 and is formed to protrude slightly downward. This contact portion 24 is positioned on the insertion path Q of the magnetic cartridge, and the guide member 19 is biased downward about the rotation shaft 20 by the torsion coil spring, so that the magnetic cartridge is inserted into the magnetic cartridge. When inserted into the cartridge holder 8, the contact portion 2
4 are pressed against two sides of the magnetic cartridge.

25 is an eject button device, and this eject button device 25 includes a button portion 26 and a compression spring 27 that is a spring member.
, and a projecting piece 28 provided on the slide plate 12. This button part 26 is shown in FIGS. 3(a) to d.
), the main body 29 has a rectangular parallelepiped shape and has one end open.
The main body 29 is provided with clamping portions 30, 31, 32 for inserting and attaching to the projecting piece 28. Of these clamping parts, the clamping parts 30 and 32 are connected to the inner surface 33 of the main body 29.
．． 33, and a groove 34 into which the side edge 28a of the projecting piece 28 is inserted is provided.

Further, the clamping portion 3I extends from the inner side surface 35.35 of the intermediate portion of the clamping portions 30, 32, and the central portion of the projecting piece 28 is clamped by the clamping portion 31.

Further, the holding portion 31 is provided from the inner bottom surface of the main body 28 to approximately the center thereof, and a space 36 is formed from the end surface 31a of the holding portion 31 to the opening.

Further, these holding portions 30, 31, and 32 are formed to have a substantially arcuate cross section so that they are pressed against the projecting piece 28. A retaining locking portion 37 extends from the center of the lower part of the main body 29 of the button portion 26, and the tip of the retaining locking portion 37 protrudes outward. A claw portion 38 is provided.

Further, as shown in FIGS. 4(a) and 4(b), the projecting piece 28 is bent and extends from one end of the slide plate 12 in a crank shape. A rectangular window 39 is formed in the projecting piece 28 along the extending direction, and mounting pieces 40 and 41 for attaching the compression spring 27 extend from the opposite short sides thereof. Among these mounting pieces 40 and 41, the mounting piece 40 on the tip side of the projecting piece 28 is formed longer than the other mounting pieces 41, and this mounting piece 40 is designed to guide the expansion and contraction movement of the attached compression spring 27. It has become. Further, a gap 42 is provided between the tips of the attachment pieces 40.41, and the compression spring 27 is inserted through this gap 42 and attached to the attachment pieces 40.41.

Further, the chassis 1 is provided with an engaging protrusion 43, and the locking part 37 for preventing the button part 26 from coming off is engaged with the engaging protrusion 43, so that the button part 26 is prevented from coming off.

The operation of the embodiment configured in this manner will be described next.

First, let me explain how to install a disk cartridge.
In the standby state where the magnetic disk cartridge is not inserted into the cartridge holder 8, the slide plate 12 is pushed in and engaged with the lock portion of the lock plate 17 (the position shown in FIG. 1(C)). , the cartridge holder 8 is moved through the pin 11 by the vertically moving cam of the slide plate 12.
is held at the upper position, that is, the eject position.

In addition, in such a standby state, the eject lever 13 is pulled by the spring force of the coil spring 15 and the torsion coil spring and is positioned near the cartridge insertion opening 18.

When the magnetic disk cartridge is inserted into the cartridge holder 8 in this state, the upper tip of the magnetic disk cartridge comes into contact with the contact portion 24 of the guide member 19, and when the magnetic disk cartridge is further inserted, the guide member 19 moves downward. When rotated, the contact portion 24 is pressed against the upper surface of the magnetic disk cartridge by the accumulated force of the torsion coil spring.

When a magnetic disk cartridge is further inserted, the tip of the magnetic disk cartridge comes into contact with the abutting portion 16 of the eject lever 13, and when a magnetic disk cartridge is further inserted, the eject lever 13 rotates clockwise in FIG. Provides storage force to the coil spring 15. Further, due to the insertion operation of the magnetic disk cartridge, the lock plate 17 holding the slide plate 12 is rotated together with the eject lever 13, and the lock portion is disengaged, and the slide plate 12 is unlocked, and the slide plate 12 is rotated together with the eject lever 13.
2 is slid forward in FIG. Then, the cam portion (not shown) of the slide plate 12 is engaged with the contact portion 17a of the lock plate 17, and only the lock plate 17 is locked in the pushed-in position, while the contact portion 16 of the eject lever 13 is It is pressed against the tip of the magnetic disk cartridge by a spring 15. Incidentally, as the slide plate 12 moves, the pin 11 engaged with the vertically moving cam is lowered, and the cartridge holder 8 descends to the lower position, that is, the loading position, with the magnetic disk cartridge accommodated, and the magnetic disk is loaded. The cartridge is operated for recording and playback.

At this time, as the cartridge holder 8 is lowered, the cartridge holder 8, eject lever 13, and lock plate 17
The guide member 19 and the magnetic disk cartridge descend together.

Next, the ejecting operation of the magnetic disk cartridge will be explained. First, when the slide plate 12 is pushed in by pushing in the eject button part 26 at the position shown by the solid line in FIGS. 1(a) and 6 from the outside, the pin 11
The cartridge holder 8 is pushed up from the loading position toward the ejecting position. Furthermore, the slide plate 12
When the slide plate 12 is pushed in, the slide plate 12 is locked at the push-in position by the lock portion, so that the slide plate 12 is held at the eject position even if the pressing force on the eject button portion 26 is removed.

In this ejecting operation, the cartridge holder 8
At the same time that the magnetic disk cartridge housed in the magnetic disk cartridge is pushed up to the eject position, the abutting portion of the lock plate 17 is disengaged from the cam portion of the slide plate 12, and the lock plate 17 becomes rotatable. As a result, the spring force of the torsion coil spring is applied to the eject lever 13, and the spring force of the coil spring 15 of the eject lever 13 is also applied, so that the eject lever 13 is rotated counterclockwise in FIG. Then, the leading end of the magnetic disk cartridge is pushed by the contact portion 16 of the eject lever 13, and the magnetic disk cartridge is ejected from the cartridge holder 8. During this ejecting operation, the contact portion 24 of the guide member 19 is pressed against the upper surface of the magnetic disk cartridge by the accumulated force of the torsion coil spring, and a frictional resistance force acts on the magnetic disk cartridge to weaken the ejecting speed. The magnetic disk cartridge is in cartridge holder 8
It is designed to prevent it from jumping out.

Next, the operation of the eject button device will be explained.

FIG. 1(a) shows a state in which the magnetic disk cartridge is attached to the cartridge holder 8. As shown in FIG.

In the state shown in FIG. 1(a), the lock by the lock plate 17 is released and the slide plate 12 is in the forward (left side in FIG. 1) position. The button portion 26 into which the protruding piece 28 of the slide plate 12 is inserted and supported is pushed forward by the compression spring 27 interposed between the end surface 31a of the button portion 26 and the edge of the window portion 39 of the protruding piece 28. energized, the button part 26
The retaining part 37 is connected to the engaging protrusion 43 of the chassis 1.
forward movement is restricted by engaging with.

When the front surface of the button part 26 is pressed to perform the eject operation from the state shown in FIG. 1(a), the button part 2
The outer end surface 26a and the inner bottom surface of 6 are the bent surfaces 28a of the protruding pieces 28.
Then, the slide plate 12 comes into contact with the tip 28b and slides to the right to reach the position shown in FIG. 1(b). In this state, the ejecting operation is performed as described above, and the slide plate 12 is locked in the pushed position by the lock plate 17.

When the button part 26 is released from the press in the state shown in FIG. 1(b), the button part 26 is slid to the left by the protruding piece 28 due to the spring force of the compression spring 27, as shown in FIG. 1(C). The locking part 37 for preventing the button part 26 from coming off is connected to the engaging part 43.
The button part 26 is stopped by being engaged with the button part 26.

When the aforementioned magnetic disk cartridge mounting operation is performed from the state shown in FIG. 1(C), the slide plate 12 is unlocked and slides to the left against the compression spring 27, as shown in FIG. The state will be in (a).

In the embodiment configured in this way, the button portion 26 is provided with the clamping portions 30, 31, 32, and the slide plate 12 is
Slideably insert the protruding piece 28 of the button part 26 and the protruding piece 2.
8, a compression spring 27 is interposed between the button part 26 and the locking part 37 for preventing the button part 26 from coming off, which engages with the engaging part 43 of the chassis 1.
Since the compression spring 27 is provided with the button part 26 and the protruding piece 28
The button part 26 is also supported by the projecting piece 28
Since the compression spring 27 and the button part 2
6, no separate support member is required, the number of parts can be reduced, and the size can be reduced. In addition, since the compression spring 27 is interposed between the protrusion 34 of the slide plate 12 and the button part 26 and the button part 26 is inserted into the protrusion 28, the locking part 37 for preventing the button part 26 from coming off Just by snap-engaging the to the engaging part 43 of the chassis 1,
Assembly work can be performed easily and work efficiency is improved.

Further, since the compression spring 27 is guided in its expansion and contraction motion by the attachment piece 40, the operation of the compression spring 33 is stabilized.

In this manner, in this embodiment, the front surface of the button portion 26 is kept in the same position both during loading and non-loading, thereby improving usability.

Incidentally, in the above-described embodiment, a case was explained in which the compression spring 27 was used as the spring member, but the present invention is not limited to this. For example, the button part 26 may be biased using a tension spring. Good too.

〔Effect of the invention〕

As explained above, according to the present invention, the front position of the button part does not change and the usability is good, the structure is simple, the number of parts can be reduced, the assembly work efficiency is improved, and the economy is improved. can be improved.

[Brief explanation of the drawing]

All of the drawings are for explaining one embodiment of the present invention.
FIGS. 1(a), (b), and (c) are cross-sectional views of essential parts showing the eject button device according to the present invention in the loading, ejecting, and unused states, and FIG. 2(a),
(b) is an exploded perspective view showing the front and rear states of the installation of the compression spring of the same eject button device;
), (C), (d) are the plan view, front view, side view, and longitudinal sectional view of the button part, and Figure 4 (a), (b)
FIG. 5 is a front view of a disk drive device to which the eject button device is applied, and FIG. 6M is a plan view of the disk drive device with the cover removed. 1.......Chassis, 12........
・Slide plate, 25... Eject button device, 26... Button part, 27...
...Compression spring, 28...Protrusion piece,
3031.32...... Clamping part, locking part, 3
8......Claw part, 41......Mounting on one side, 4337......For preventing removal 39... Window part, 40... Engagement protrusion.

Claims (1)

[Claims] An eject button device comprising a housing, a button part slidably provided with respect to the housing, and a slide plate held in at least two different positions during loading or non-loading by operating the button part. In the button part, a recess is provided and the slide plate is slidably inserted into the button part, and a spring member is interposed between the button part and the slide plate to bias the button part in a direction opposite to the pressing direction. . An eject button device, characterized in that the button portion is provided with a locking portion for preventing the button from coming off, which engages with the housing.