JPH0626074B2 - Cassette insertion device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette insertion device used in, for example, a video floppy drive device or a floppy disk drive device for recording and reproducing a video signal or the like on a rotating magnetic sheet.

2. Description of the Related Art A cassette used in a video floppy drive device has a structure shown in FIGS. In these figures, 101 is a magnetic sheet, 102 is a center core provided at the center of the magnetic sheet 101, and has a hole 102a for engaging with a spindle on the apparatus main body side. 1
Reference numeral 03 denotes a cassette housing, which inserts the positioning holes 103a and 103b and the magnetic head provided on the apparatus main body side and stabilizes the contact between the magnetic head and the magnetic sheet 101 from the side opposite to the magnetic head insertion side. It has a hole 103c for inserting a pad used for performing. 1
Reference numeral 04 denotes a dustproof shutter, which covers the magnetic head and pad insertion holes 103c when the cassette is not used, and the dustproof shutter 104 slides in the direction of arrow 107 when the apparatus is inserted into the apparatus for recording or reproduction. Then, the hole 103c is opened. 104b is a hooking hole for sliding the opened dustproof shutter in the direction opposite to the arrow 107 when reclosing the dustproof shutter, and 104a is a hook integrally formed with the dustproof shutter 104 and has one end 108 on the cassette housing 103. Elastic body 10 with fixed
The dustproof shutter 10 is locked by the tip portion 105a of
It prevents unnecessary opening when 4 is closed. When it is desired to open the dustproof shutter 104, the dustproof shutter 104 may be slid in the direction of arrow 107 while pushing the elastic body 105 in the direction of arrow 106. On the contrary, when closing the opened dustproof shutter 104, it is sufficient to slide the dustproof shutter 104 in the direction opposite to the arrow 107, and the inclined surface 104c of the hook 104a abuts and presses the inclined surface 105b of the elastic body 105. It is not necessary to push the elastic body 105 in the direction of the arrow 106 as when opening.

As a cassette inserting device of a video floppy drive device using the above cassette, for example, Japanese Patent Laid-Open No. 57-20
No. 8672. FIG. 5 is a perspective view showing the main part of this conventional cassette inserting device.
Is a substrate on the apparatus main body side, 111 is a spindle for engaging the center core 102 of the magnetic sheet to rotate the magnetic sheet, 112 is a magnetic head, 113 is a case cover, which is rotatable about a hinge shaft 116. And is urged by a spring 117 in a direction away from the substrate 110. Reference numeral 114 denotes a cassette holder, which has a U-shape for accommodating a cassette and is rotatably held around a hinge shaft 116. Reference numeral 115 denotes a convex portion provided on the cassette holder 114, which slides the dustproof shutter 104 when the cassette is inserted into the cassette holder 114 as indicated by an arrow. A hole 113a is provided on the front side surface of the case cover 113, and when the case cover 113 is tilted toward the substrate 110 side, the hook 1
18 engages with the hole 113a and locks the case cover 113 from being separated from the substrate 110 by the urging force of the spring 117. Also, the front end 11 of the cassette holder 114
4a is pushed by the lower end of the front side surface of the case cover 113, and therefore the cassette holder 114 is also collapsed by tilting the case cover 113.
Is fixed by the hook 119, the cassette holder 114 is also fixed, and the cassette inserted therein is also fixed. At this time, the hole 102a of the center core 102 of the cassette engages with the spindle 111, the magnetic head 112 abuts the magnetic sheet 101 through the hole 103a of the cassette housing 102, and the pad provided on the case cover 113. 119 is also inserted into the hole 103a of the cassette housing 103. When the spindle 111 is rotated in this state, the magnetic sheet 101 rotates and is pressed against the magnetic head 112 by the pad 119, so that the magnetic sheet 101 can maintain stable contact with the magnetic head 112, and signal recording / reproduction can be performed. It will be possible.

Problems to be Solved by the Invention However, although the above-described configuration is suitable for the portable type, when the stationary type is used, the cassette insertion portion is raised, so that an object can be placed on the housing. In addition, it has a problem that it is not suitable for storage in a rack or the like. Further, regarding the operation of inserting the cassette, two kinds of operations of first inserting the cassette into the cassette holder and then tilting and closing the case cover are necessary, which is troublesome.

In view of the above problems, the present invention is a cassette insertion device capable of mounting a cassette by removing a movable part on the upper surface of the device and inserting the cassette into an insertion hole on the front surface, and reliably mounting and removing the cassette. It is an object of the present invention to provide a cassette insertion device that enables the above-mentioned operation and has a particularly good cassette insertion feeling.

MEANS FOR SOLVING THE PROBLEMS The present invention relates to a sliding body which is slidable by applying an urging force to a main body of a device in a first direction parallel to a magnetic sheet surface, and which is held by the urging force. A frame body that holds the cassette, performs substantially positioning, and is held by the sliding body so as to slide in a second direction perpendicular to the first direction, and a biasing force that is rotatable and pushes out the cassette. A cassette pushing member that is provided and held, and a groove that engages the sliding body at one end to lock the movement of the sliding body due to the urging force and engages the other end with one end of the cassette pushing member. The cassette insertion device is provided with a stopper that is rotatable and is held by being applied with a biasing force in a direction of engaging with the sliding body.

Operation According to the present invention, when the cassette is inserted into the frame body according to the above-described configuration, the cassette pushing member is pushed by the cassette and rotates, and one end of the cassette pushing member abuts one side surface of the groove of the stopper to push the stopper. become. As a result, the stopper rotates in the direction in which the engagement with the sliding body is released, and finally the locking of the sliding body is released, and the sliding body tends to slide by the urging force. At this time, if the sliding body moves a little,
The stopper is then pushed by the sliding body and further rotated. By this rotation of the stopper, one end of the cassette pushing-out means is pushed to the side opposite to the groove of the stopper contrary to the initial state, and the cassette pushing-out member is separated from the cassette, so that the cassette is positioned at a predetermined position. Unnecessary force when doing is removed. In this state, when the sliding body slides further by the urging force, the frame housing the cassette slides in the cassette mounting direction.
When the sliding of the sliding body is completed, the cassette is mounted at a predetermined position. Next, when it is desired to take out the cassette, the sliding body is pushed and slid in the opposite direction, and the frame housing the cassette moves in the opposite direction to the above, and the cassette is separated from the mounted state. Next, when the sliding of the sliding body is completed, one end of the stopper is again engaged with the locking groove of the sliding body, and the stopper is rotated to the initial state by the urging force. The rotation of the stopper disengages one end of the cassette pushing member from the groove of the stopper, and the cassette pushing member is rotated by the urging force. The rotation of the cassette pushing member pushes the cassette out of the frame body.

Examples Examples of the present invention will be described below.

FIG. 1 is a perspective view of an essential part of a cassette insertion device according to an embodiment of the present invention. Reference numeral 1 is a substrate provided on the apparatus main body side, 2 is a positioning hole 103a, 1 provided on the substrate 1 for the cassette.
The cassette positioning pin 3 for engaging with 03b to position the cassette, 3 together with the cassette positioning pin 2 for determining the mounting height of the cassette, 4 are provided on the substrate 1, and are associated with the center core 102 of the cassette. A spindle for rotating the magnetic sheet 101 in combination, a magnetic head 5 for contacting the magnetic sheet 101 to record or reproduce a signal, and a sliding member 6 for guiding a guide pin 7 on the substrate 1 and a cassette height determining pin 3 and a guide. Since it is engaged with the hole 6a, it can slide in the directions of arrows A and B. The sliding body 6 is provided with a slit 8 and an inclined surface 9, and the protrusion 6b is provided with a tension spring 10 on the base 1.
The sliding member 6 is urged in the direction of arrow B.

Reference numeral 11 denotes a stopper, and a guide shaft A15 provided on the base 1 penetrates through the hole 11a.
It is rotatable about 5 as a fulcrum. Reference numeral 12 denotes a roller provided on the stopper 11, which engages with the arcuate groove 6c provided on the sliding body 6. Further, the groove 1 is provided at one end of the stopper 11.
1b is provided. Reference numeral 16 denotes a cassette pushing member, which is penetrated by a guide shaft B14 provided in the base 1 with a hole 16a and is rotatable around the guide shaft B14 as a fulcrum. Reference numeral 17 denotes a spindle provided on the cassette pushing member 16, and a cassette contact roller 18 is rotatably held on the spindle 17. Reference numeral 31 is a tension spring, which is hooked between the convex portion 11c of the stopper 11 and the hole 16b of the cassette pushing member 16.

Reference numeral 19 is a frame, which is an L-shaped portion 19a for supporting the cassette.
And has a support shaft A20.
20 is engaged with the slit 8 of the sliding body 6. The frame body 19 has a positioning body 2 having holes 21a that engage with the guide shaft A15 and the guide shaft B14 provided on the substrate 1.
1 is attached by screws 22. Therefore, the frame body 19 can move only in the directions of arrows E and F. 19
Reference numeral b is a convex portion for opening the dustproof shutter 104 of the cassette.

Reference numeral 23 denotes an upper and lower body, which has a support shaft B24, and a roller 25 is rotatably held on the support shaft 24. This roller 25
Engages the inclined surface 9 of the sliding body 6. Reference numeral 28 is a pad provided on the upper and lower bodies 23. The upper and lower bodies 23 include a guide shaft A15 and a guide shaft B provided on the substrate 1.
Since the positioning body 26 having the hole 26a that engages with the screw 14 is attached by the screw 27,
It can move only in the directions of and F,
A tension spring 30 is hooked between the end portion 23a of the third member 3 and the convex portion 1b provided on the substrate 1, and the upper and lower bodies 23 are indicated by arrows E.
Is biased in the direction of. Reference numeral 1c is a height determining boss that determines the height of the upper and lower bodies 23 when the upper and lower bodies 23 have fully descended in the direction of arrow E, and is provided on the substrate 1.

The operation of the cassette insertion device of this embodiment having the above-described structure will be described below.

Now, when the cassette is inserted into the frame body 19,
The dustproof shutter 104 opens as the cassette is further inserted by hitting the inner convex portion 19b against the end of the dustproof shutter 104 of the cassette. When the cassette is further inserted, as shown in FIG. 2 (a), the front end of the cassette comes into contact with the cassette contact roller 18 provided on the cassette pushing member 16, and the tension spring 31 exerts a force in the direction of pushing the cassette. However, when this force is overcome and the cassette is further inserted, the support shaft 17 of the cassette pushing member 16 contacts the one side surface 11d of the groove 11b of the stopper 11. When the cassette is further inserted, the stopper 11
Rotates counterclockwise. Roller 1 of stopper 11
2 is engaged with the arcuate groove 6c of the sliding body 6, but when the stopper 11 is rotated counterclockwise, the roller 12 is finally separated from the arcuate groove 6c ((b in FIG. 2). (State of)) The sliding body 6 slides in the direction of arrow B by the urging force of the tension spring 10.

At this time, the sliding body 6 starts sliding in the state of FIG. 2B, and when the sliding body 6 slides, the stopper 11 moves to the second position.
As shown in Figure (c), it can be rotated counterclockwise a little more than in the state of (b). By this rotation, the surface 11e of the groove 11b of the slide 11 on the opposite side to the abutment against the support shaft 17 of the cassette push-out member 16 rotates the cassette push-out member 16 a little more clockwise, so that the cassette contact roller 18 is It will be separated from the tip of the cassette.

On the other hand, when the sliding body 6 slides in the direction of arrow B, the frame body 19
Since the support shaft A20 is engaged with the slit 8, it moves downward in the direction of arrow E. The cassette in the frame 19 is the frame 1
9 descends as it descends, and engages with the cassette positioning pin 2 and the cassette height determining pin 3 on the substrate 1 for positioning. When this engagement is completed, the cassette does not descend further, but the frame body 19 tries to descend further,
The cassette is pressed, and the cassette is firmly held in that state. The slide body 6 also stops sliding by coming into contact with the cassette and stopping the lowering of the frame body 19. Also,
The upper and lower bodies 23 are held at the height position by the roller 25 contacting the inclined surface 9 of the sliding body 6, so that the sliding body 6
When is slid in the direction of arrow B, the upper and lower bodies 23 descend in the direction of arrow E. Since the head of the inclined surface 9 in the arrow E and F directions is larger than the head of the slit 8 in the arrow E and F directions, the sliding body 6 slides in the arrow B direction in the arrow E direction of the upper and lower bodies 23. Is larger than the descending amount of the frame body 19 and the cassette in the direction of arrow E, and the pad 28 provided on the upper and lower body 23 causes the bung hole 19c of the frame body 19 to move.
And is inserted into the hole 103c of the cassette.
When the sliding of the sliding body 6 is completed,
At that time, the height position obtained by contacting the upper and lower bodies 23 with the height-determining boss 1c provided on the substrate 1 is higher than the height position obtained by the roller 25 of the upper and lower bodies 23 contacting the inclined surface 9. Since it is configured to be higher, the upper and lower bodies 23 come to rest while being in contact with the height determining boss 1c, and the positions of the pads 28 provided on the upper and lower bodies 23 are set accurately. . At this point, the insertion of the cassette is completely completed, and the spindle 4 is rotated to rotate the magnetic sheet 101, and the magnetic head 5 is moved to a desired position, whereby recording or reproduction of a signal can be performed.

Next, when it is desired to take out the cassette, the knob 29 provided on the sliding body 6 is pushed to slide the sliding body 6 in the direction of arrow A. When the sliding body 6 slides in the direction of arrow A, the frame body 19, the cassette in the frame body 19, and the upper and lower bodies 2
3 will be the exact opposite of what it was last time. That is,
All three are going up, but in the amount of rise
And since the upper and lower body 23 is larger than the cassette,
The pads 28 provided on the upper and lower bodies 23 are holes 10 of the cassette.
The pad 28 is completely separated from the cassette at the time when the sliding of the sliding body 6 is completed as it comes out of 3c. Then, when the sliding of the sliding body 6 is completed,
The roller 1 of the stopper 11 is again inserted into the arc-shaped groove 6c of the sliding body 6.
As a result, the sliding body 6 is held in that state even if the force pushing the knob 29 is removed, and the frame body 19 and the upper and lower bodies 23 are also held at the position at that time.

On the other hand, the roller 12 of the stopper 11 makes the arc-shaped groove 6 of the sliding member 6
As shown in FIG. 2 (a), the stopper 11 slightly rotates clockwise when it is engaged with c, and this rotation causes the surface 11e of the groove 11b of the stopper 11 and the cassette pushing member 16 to rotate. Is disengaged from the support shaft 17, the cassette pushing member 16 tries to rotate counterclockwise by the force of the tension spring 31, and the cassette abutting roller 18 provided on the cassette pushing member 16 moves to the tip of the cassette. Abut and try to push the cassette out in the direction of arrow B. The cassette pushing member 16 is rotated by the force of the tension spring 31 until the other end 16c comes into contact with the side surface of the convex portion 1d provided on the substrate 1, and pushes the cassette in the direction of arrow B by a predetermined amount. Then, in order to take out the cassette completely, the rear end of the cassette which has been pushed out may be grasped with a finger and pulled out.

EFFECTS OF THE INVENTION As described above, according to the present invention, the cassette can be mounted by merely inserting the cassette into the frame, and both the cassette pushing member and the stopper, which are loads when the cassette is inserted, can be rotated. Because of this, the movement is smooth and the insertion feeling is good. Further, since the cassette pushing member is completely separated from the cassette when the cassette is completely inserted, the cassette is surely positioned at the predetermined position, and when the cassette is ejected, the cassette is moved to the predetermined position where the cassette is about to be pushed out. Since the cassette pushing member comes into contact with the cassette, stable operation is possible. Further, it does not require a motor or the like as a drive source, has a simple structure and is inexpensive, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cassette insertion device according to an embodiment of the present invention, FIG. 2 is a top view for explaining the operation of the device, and FIG.
FIG. 4 is a front view of a cassette used in a video floppy device, FIG. 4 is a top view thereof, and FIG. 5 is a perspective view of a conventional cassette inserting device. 6 ... Sliding body, 6c ... Arc-shaped groove, 10 ... Tension spring,
19 ... frame, 11 ... stopper, 12 ... roller, 1
1b ... Groove, 16 ... Cassette pushing member, 17 ...
Support shaft, 18 ... cassette contact roller, 31 ... tension spring, 103 ... cassette.

Claims (1)

[Claims] 1. A first position at which a cassette for rotatably housing a magnetic sheet is positioned by a positioning member on the apparatus body side, and a second position at which the cassette can be attached and detached outside the apparatus body. A cassette insertion device for transferring the cassette to and from a position, the device being slidable in a first direction parallel to the magnetic sheet surface at the first position,
In addition, the slide body, which is held by being given an urging force, accommodates the cassette, performs substantially positioning, and is slidable in a second direction perpendicular to the first direction. A frame body that is held so as to slide in the second direction by sliding in the direction of, and a cassette push-out member that is rotatable and is held by being biased in a direction that pushes out the cassette; Engages with the sliding body to lock the movement of the sliding body due to the urging force, and has a groove at the other end that engages with one end of the cassette pushing member and is rotatable. When the cassette is inserted into the frame, the cassette pushing member is pushed by the cassette and rotated, and one end of the stopper is rotated. Abut on one side of the groove As a result, the stopper is also rotated to release the locking of the movement of the sliding body, and the stopper is further rotated by the movement of the sliding body. A cassette insertion device, wherein a side surface portion abuts on one end of the cassette pushing member so that the cassette pushing member is further rotated and separated from the cassette.