JPH077555B2 - 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 for, for example, a video floppy 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. 101 is a magnetic sheet, and 102 is a center core provided at the center of the magnetic sheet 101, which is a hole 10 for engaging with a spindle on the apparatus main body side.
Have 2a. Reference numeral 103 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 cutting.
Reference numeral 104 denotes a dust-proof shutter, which is used for inserting the magnetic head and the pad 103c when the disc cassette is not used.
The dustproof shutter 104 slides in the direction of arrow 107 to open the hole 103c when it is inserted into the apparatus for recording or reproducing. 104b is a hook hole for sliding the opened dustproof shutter in the direction opposite to the arrow 107 when the dustproof shutter is closed again, and 104a is the dustproof shutter 104.
Is integrally formed with the cassette housing 103, and is locked by the tip end portion 105a of the elastic body 105 whose one end 108 is fixed to the cassette housing 103 to prevent the dustproof shutter 104 from opening unnecessarily when it is closed. There is. 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 is the inclined surface 105b of the elastic body 105.
The elastic body 105 does not have to be pushed in the direction of the arrow 106 unlike the case of opening because it abuts and presses against.

As a cassette inserting device of a video floppy drive device using the above cassette, for example, Japanese Patent Application Laid-Open No. 57-208672
It is shown in the publication. FIG. 5 is a perspective view of a main part of the conventional cassette inserting apparatus, in which 110 is a substrate on the apparatus main body side and 111 is a center core 102 of the magnetic sheet for rotating the magnetic sheet. Spindle, 112
Is a magnetic head, 113 is a case cover, and hinge shaft 116
It is held so as to be rotatable around the center of the axis and is biased 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 115 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 118 engages with the hole 113a so that the case cover 113 is biased by the spring 117. Stop trying to leave. Further, since the front end portion 114a of the cassette holder 114 is pushed to the lower end of the front side surface of the case cover 113, the case cover 1
When the holder 13 is tilted, the cassette holder 114 is also tilted, and when the case cover 113 is fixed by the hook 118, 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 and the spindle 1
11 and the magnetic head 112 is engaged with the cassette housing 1
The pad 119 provided on the case cover 113 also contacts the magnetic sheet 101 through the hole 103a of the cassette housing 103.
Inserted into the hole 103a of the. When the spindle 111 is rotated in this state, the magnetic sheet 101 is rotated and the pad 119 is rotated.
The magnetic sheet 1 is pressed by the magnetic head 112.
01 can maintain stable contact with the magnetic head 112,
It becomes possible to record and reproduce signals.

Problems to be Solved by the Invention However, in the above-mentioned configuration, although it is good 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. However, it has a problem that it cannot be stored in a rack or the like. Furthermore, regarding the insertion operation of the cassette,
First, the cassette was inserted into the cassette holder, and then the case cover was tilted and closed, which was troublesome.

In view of the above problems, it is an object of the present invention to provide a cassette insertion device that eliminates a movable part on the upper surface of the device and allows the cassette to be mounted only by inserting the cassette into the insertion hole on the front surface.

Means for Solving the Problems In order to solve the above problems, the present invention stores a slide body held slidably in a first direction parallel to a magnetic sheet surface in a device body and a cassette. Performs substantially positioning and is held slidably in a second direction perpendicular to the first direction,
And a frame body having a first support shaft that engages with a slit provided in the sliding body and having a drop in the second direction, and a first elastic body that biases the sliding body to one side in the first direction. , A stopper that locks the movement of the sliding body by the urging force of the first elastic body, but releases the lock when the cassette is inserted into the frame body, and a signal is recorded on the magnetic sheet by the magnetic head or A pad for stabilizing the contact between the magnetic sheet and the magnetic head during reproduction, and a second spindle for engaging with an inclined surface provided in the sliding body and having a head in the second direction, and An upper and lower body slidably held in the second direction, and a second body for urging the upper and lower bodies in a direction in which the second support shaft of the second direction tries to contact the inclined surface of the sliding body. And an elastic body.

Action According to the present invention, when the cassette is inserted into the frame body according to the above-described configuration, the stopper locks the sliding body, and the sliding body slides due to the urging force of the elastic body A. Since the frame body is engaged with the slit of the sliding body via the support shaft A,
As the slide body slides, the frame body is moved downward by the slit having the above-mentioned drop, and the cassette in the frame body is fixed at a predetermined position. On the other hand, since the upper and lower bodies are engaged with the inclined surface of the sliding body by the urging force of the elastic body B via the support shaft B, when the sliding body slides, the upper and lower bodies follow the inclined surface having the drop. When moved downward, the pads provided on the upper and lower bodies are arranged at predetermined positions with respect to the cassette, and the signal can be recorded or reproduced on the magnetic sheet in the cassette. Next, when it is desired to take out the cassette, the sliding body is slid by applying a force in a direction opposite to the above direction, that is, a direction opposite to the urging direction of the elastic body A. While being pushed up, the pad moves away from the cassette in the opposite direction, and the frame also moves in the opposite direction to transfer the cassette to a position where it can be taken out. At the end of this sliding, the sliding body will again engage with the stopper, and will remain in that state even if the force is removed.

Examples Hereinafter, the present invention will be described based on illustrated examples.

FIG. 1 is a perspective view of an essential part of a cassette insertion device according to an embodiment of the present invention. 1 is a substrate provided on the apparatus main body side, 2 is a cassette positioning pin that is provided on the substrate 1 and engages with positioning holes 103a and 103b of the cassette to position the cassette, and 3 is a cassette mounting pin 2 and the mounting height of the cassette A cassette height determining pin for determining 4 is a spindle which is provided on the substrate 1 and engages with the center core 102 of the cassette to rotate the magnetic sheet 101, and 5 is a magnetic sheet 101.
A magnetic head 6 for contacting with and recording or reproducing a signal, 6 is a sliding member, and the guide pin 7 on the substrate 1 and the cassette height determining pin 3 are engaged with the guide hole 6a. It is slidable. The sliding body 6 is provided with a slit 8 and an inclined surface 9, and the convex portion 6b is provided with a tension spring 10 between the convex spring 1a and the convex portion 1a provided on the base 1. It is biased in the B direction. Reference numeral 11 denotes a stopper, which is penetrated by a guide shaft A14 provided on the base 1 through the hole 11a and is rotatable about the guide shaft A14 as a fulcrum, but is attached in a direction of an arrow C by a coil spring (not shown). It is energized. Reference numeral 12 denotes a stopper pin provided on the stopper 11, which is an arcuate groove provided on the sliding body 6.
Engage with 6c. A semicircular pin 13 is provided at one end of the stopper 11. Reference numeral 16 denotes a lever, which is penetrated by a guide shaft B15 having a hole 16a provided in the base 1 and is rotatable about the guide shaft B15 as a fulcrum, but is biased in a direction of an arrow D by a coil spring (not shown). Has been done. 17 is a support shaft provided on the lever 16,
A cassette contact roller 18 is rotatably held on the cassette 17. Reference numeral 19 is a frame, which is an L-shaped portion 19a for supporting the cassette.
And a support shaft A20, and the support shaft A20 engages with the slit 8 of the sliding body 6. A positioning body 21 having a hole 21a that engages with the guide shaft A14 and the guide shaft B15 provided on the substrate 1 is attached to the frame body 19 with a screw 22. Therefore, the frame body 19 can move only in the directions of arrows E and F. Reference numeral 19b 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. The roller 25 engages with 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 provided on the substrate 1.
Since the positioning body 26 having the hole 26a engaging with the A14 and the guide shaft B15 is attached by the screw 27, the upper and lower bodies 23 can move only in the directions of the arrows E and F,
Further, a tension spring 30 is applied to the end portion 23a of the upper and lower body 23 between it and the convex portion 1b provided on the substrate 1, and the upper and lower body 23 is biased in the direction of arrow E. The reference numeral 1c designates a height determining boss for determining the height when the upper and lower bodies 23 are completely lowered 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 projection 19b in the frame body 19 hits the end of the dustproof shutter 104 of the cassette and the cassette is further inserted. When the cassette is further inserted, the tip of the cassette is the cassette contact roller provided on the lever 16.
The cassette 18 comes into contact with 18 and receives a force in the direction of pushing out the cassette due to the urging force. When this force is overcome and the cassette is further inserted, the tip of the cassette comes into contact with the semi-circular pin 13 of the stopper 11. Again, the urging force exerts a force in the direction of pushing out the cassette, but if this force is overcome and the cassette is further inserted, both the cassette contact roller 18 and the half-round pin 13 push against the tip of the cassette. Then, the lever 16 rotates in the direction opposite to the arrow D and the stopper 11 rotates in the direction opposite to the arrow C. The stopper pin 12 of the stopper 11 is engaged with the arcuate groove 6c of the sliding body 6, but when the stopper 11 rotates in the direction opposite to the arrow C, the stopper pin 12 finally moves out of the arcuate groove 6c. The separating slide 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. 2a, and when the sliding body 6 slides, the stopper 11 is rotated further a little as compared with the state of a as shown in FIG. 2b.
This rotation causes the half-round pin 13 to abut the tip 16b of the lever 16 and rotate the lever 16 a little further in the direction opposite to the arrow D, so that the cassette abutment roller 18 is separated from the tip of the cassette. On the other hand, when the slide body 6 slides in the direction of arrow B, the frame body 19 descends in the direction of arrow E because the support shaft A20 is engaged with the slit 8. The cassette inside the frame 19 descends as the frame 19 descends, and is positioned by engaging with the cassette positioning pin 2 and the cassette height determining pin 3 on the substrate 1. When this engagement is completed, the cassette does not descend further, but the frame body 19 tries to descend further and presses the cassette, and the cassette is firmly held in that state. The sliding body 6 also stops sliding by coming into contact with the cassette and stopping the lowering of the frame body 19. Further, 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 when the sliding body 6 slides in the direction of arrow B, the upper and lower bodies 23 move in the direction of arrow E. Going down. 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 arrow E direction, and the pad 28 provided on the upper and lower bodies 23 penetrates the bung hole 19c of the frame body 19 and is inserted into the hole 103c of the cassette. Come on. When the sliding of the sliding body 6 is completed, the upper and lower bodies are
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 23 contacting the inclined surface 9. Therefore, the upper and lower bodies 23 stand still in contact with the height determining boss 1c, and the positions of the pads 28 provided on the upper and lower bodies 23 are accurately set. At this point, the insertion of the cassette is completely completed, and the signal can be recorded or reproduced by rotating the spindle 4 to rotate the magnetic sheet 101 and moving the magnetic head 5 to a desired position.

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 23 move in the opposite direction to the previous movement. That is, although the three members ascend, the upper and lower bodies 23 are larger than the frame body 19 and the cassette in the amount of the ascent, so the pad 28 provided on the upper and lower bodies 23 slips out from the hole 103c of the cassette and slides. When the sliding of the moving body 6 is completed, the pad 28 is completely separated from the cassette. When the sliding of the sliding body 6 is completed, the arcuate groove 6c of the sliding body 6 is
The stopper pin 12 of the stopper 11 is engaged again, and even if the force pushing the knob 29 is removed, the sliding body 6 is held in that state, and the frame body 19 and the upper and lower bodies 23 are also held at the positions at that time. Will be. On the other hand, the stopper pin of stopper 11
When 12 is engaged with the arcuate groove 6c of the sliding body 6, the stopper
11 rotates slightly in the direction of arrow C, and this rotation disengages the half-round pin 13 from the tip 16b of the lever 16, and the lever 16 tries to rotate in the direction of arrow D by the biasing force. , A cassette contact roller 18 provided on the lever 16
Contacts the tip of the cassette and tries to push the cassette in the direction of arrow B. The lever 16 is rotated by the biasing force until the other end 16c comes into contact with the side surface of the cassette height determining pin 3 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 automatically mounted by simply inserting the cassette into the insertion hole on the front surface, which makes the operation very simple, and does not have a movable portion on the upper surface of the exterior of the device. Since it can be configured, it can be designed to be suitable for storage in a rack, etc. Furthermore, it does not require a motor or the like as a drive source for inserting or ejecting the cassette, and the configuration is simple and the cost is low. Is big.

[Brief description of drawings]

FIG. 1 is a perspective view of a cassette insertion device according to an embodiment of the present invention, FIG. 2 is an explanatory view of the operation of main parts of the device, and FIGS. 3 and 4 are explanations of a cassette used in a video floppy device. 5 and 5 are perspective views of a conventional cassette insertion device. 6 ... Sliding body, 6c ... Arc-shaped groove, 8 ... Slit, 9 ...
… Inclined surface, 10 …… tensile spring, 11 …… stopper, 12 …… stopper pin, 19 …… frame, 20 …… spindle A, 23 …… upper and lower body, 24 …… spindle B, 25 …… Laura, 28 ... Pad, 30 ...
… A tension spring.

Claims (3)

[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 between the slide body and a slide body held by the device body slidably in a first direction parallel to the magnetic sheet surface at the first position; A slit for accommodating the cassette to perform substantially positioning, slidably held in a second direction perpendicular to the first direction, and provided in the sliding body and having a drop in the second direction; A frame body having a first supporting shaft to be engaged, a first elastic body for urging the sliding body to one side in the first direction, and the sliding body by the urging force of the first elastic body. The movement is locked but the cassette is A stopper configured to release the lock by being inserted into the body, and stabilizing contact between the magnetic sheet and the magnetic head when recording or reproducing a signal on the magnetic sheet with the magnetic head And a second support shaft that engages with an inclined surface provided in the sliding body and having a drop in the second direction, and is held slidably in the second direction. An upper body and a lower body; and a second elastic body for urging the upper body in the second direction in a direction in which the second support shaft tries to contact the inclined surface of the sliding body. A cassette insertion device characterized by: 2. The stopper is configured to lock the pushing-out operation of the cassette pushing-out means for pushing out the cassette from the frame body to the cassette in association with the operation of unlocking the movement of the sliding body. The cassette insertion device according to claim 1. 3. The drop in the second direction of the inclined surface is larger than the drop in the second direction of the slit provided in the sliding body. Cassette insertion device.