JPH0610912B2 - Center core mounting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center core mounting device that mounts a center core for rotating a magnetic sheet such as a magnetic cassette on a magnetic cassette drive device.

(Prior Art) FIG. 7 is a perspective view showing an example of a magnetic cassette (hereinafter, simply referred to as a cassette), which is accessible from both front and back surfaces. 101 is the cassette, 102 is a magnetic sheet provided inside, a center core (hereinafter, simply referred to as core) 103 is provided at the center, an engaging hole 104 is provided on the lower surface, and an upper opening is provided. , 106 are lower surface openings.
Further, a magnetic material (not shown) is provided on the lower surface of the core 103, and the core 103 is attracted to a magnet provided on the outer periphery of a spindle 107 provided in a magnetic cassette drive device that drives this cassette. A magnetic head (not shown) is inserted in the lower surface opening 106, and a pad (not shown) for stabilizing the contact between the magnetic head and the magnetic sheet 102 is provided in the upper surface opening 105. It is an opening to insert.

A magnetic cassette drive device for driving a cassette constructed in this way is disclosed, for example, in Japanese Patent Laid-Open No. 59-198560, and FIGS. 8 to 10 are views for explaining the main parts thereof.

First, in FIG. 8, 109 is a cassette holder (hereinafter,
It is simply referred to as a holder) and rotates about the hinge shaft 110. Similarly, 111 is an outer cover that rotates by the hinge shaft 110, protects the holder 109, and is in the state illustrated by being biased by an elastic member (not shown). Reference numeral 112 denotes a leaf spring, one end of which is fixed to the outer cover 111 and urges downward. An initial force is applied by a position regulating member 113 provided on the outer cover 111, and a part of the spindle 107 is projected above the spindle 107.

In this state, insert the cassette 101 into the holder 109, and
The cassette 101 is moved to a predetermined position by pushing down 111 together with the holder 109 against the biasing force of the leaf spring 112, but at this time, the core 103 is not completely mounted on the spindle 107 because of a frictional load.

Then, as shown in FIG. 9, when further rotated in the direction of the arrow, the leaf spring 112 presses the core 101 against the spindle 107 to completely mount it, and when the outer cover 111 is returned to the state of FIG. Then, the leaf spring 112 is separated from the core 103.

When the spindle 107 is rotationally driven by a drive mechanism (not shown) from this mounted state, the core 103 attracted to the magnet 108
At the same time, the magnetic sheet 102 rotates, and recording or reproduction is performed.

(Problems to be Solved by the Invention) However, the center core mounting device configured as described above cannot be implemented unless the outer cover 111 is a sensor core mounting device in which the outer cover 111 can be manually rotated. It cannot be used for a so-called front loading type drive device that is mounted from the front side.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional drawbacks, and an object thereof is to provide a cassette core mounting device having a simple structure which can be easily incorporated into a front loading type cassette driving device.

(Means for Solving the Problems) The present invention has the above-mentioned object of a first position at which a magnetic cassette for storing a rotatable magnetic sheet supported by a center core can be inserted or removed, and a magnetic cassette inside. A center core mounting device for transporting the center core of the second core to a second position where the magnetic sheet can be rotated by engaging with the spindle of the main body of the apparatus and securely engaging the center core with the spindle. There is a frame body that accommodates and moves the magnetic cassette, a pressing body that is rotatably held by the frame body and presses the center core thickly, and the center core is a spindle with the predetermined rotating position of the pressing body as a boundary. An elastic body capable of urging the pressing body in a first direction which is engaged with the second direction and an opposite second direction, and a pressing body after the magnetic cassette is completely transferred to the second position. Against the irregularity of the elastic body in the first direction, the pressing body is rotated in the second direction beyond the predetermined rotation position so that the elastic body urges the pressing body toward the pressing body. This is achieved by a configuration including a moving body that is reversed in the second direction and a pressing body locking unit that locks the rotation of the pressing body.

(Operation) According to the present invention, when the frame body in which the magnetic cassette is inserted is moved to a predetermined position, the center core is completely inserted in the spindle direction by the pressing body biased in the first direction. After the transfer of the magnetic cassette to the second position is completed, the moving body moves and comes into contact with the pressing body against the urging force.
Since the pressing body is separated from the core, the pressing body is held by being biased in the separating direction.

Also, when the magnetic cassette is moved in the first position direction,
The pressing body comes into contact with the pressing body locking means by the movement of the frame body,
The pressing body is rotated in the first direction against the urging force, and finally rotated to the reverse position of the urging force of the elastic body, so that the pressing body is held in the urged state in the first direction and is again When mounting the magnetic cassette, it becomes possible to push the center coca and insert it into the spindle.

(Embodiment) FIG. 1 is an exploded perspective view showing a main part of a center core mounting apparatus according to one embodiment of the present invention, and FIGS. 2 to 6 are views of a main part showing a mounting operation.

Reference numeral 1 is a substrate, 2 is a locating pin for a cassette when mounted, 5 is a spindle which engages with a core 103 of a cassette 101 provided on the substrate 1 to rotate a magnetic sheet 102, and 6 is provided on an outer peripheral portion thereof. A magnet for attracting the core 103, 7 a magnetic head, 8 and 9 guide plates A and B, and 10 a cassette
A frame body for accommodating 101, a pressing body 11 rotatably held around a support shaft 10a provided on the frame body 10, and a pressing body 11 for holding both ends thereof.
A pin 11a provided on the spring and a spring 13 engaged with the frame 10, respectively.
Is a moving body, 14 is a pad provided on it, and 15 is a sliding body.

Further, 16 is a top plate, which is screwed into the guide plate 8 and 9 screw holes 8a, 9a through four mounting holes 16a, and two shafts 16b are formed. The shaft 16b engages with the slit 15a provided in the sliding body 15 to guide the sliding body 15 in the horizontal direction. The sliding body 15 has 3
It has a shaft 1b of a book and engages with slits 8b, 9b, 9c provided in the respective guide plates 8, 9 to guide the sliding of the sliding body 15 in the horizontal direction. Furthermore, sliding body
A tension spring 22 is engaged with the spring hooks 15c and 16c of the plate 15 and the plate 16, respectively, to urge the sliding body 15 in the direction of arrow A. A stopper 17 is rotatably provided on a support shaft 16d of the top plate 16 and is urged clockwise by a tension spring 21. A roller 18 is provided at the tip of the stopper 17 and is engaged with the arcuate and linear end surfaces 15d and 15e of the sliding body 15. When the end surface 15d is engaged, the sliding body 15 is engaged.
Sliding in the direction of arrow A is stopped.

A cassette push-out member 19 is rotatably supported by a support shaft 16e of the top plate 16 and is urged counterclockwise by a tension spring 21, and one end of the cassette push-out member 19 abuts on a locking pin 16f of the top plate 16 and stops. is doing. The extruded body 19 of the cassette has a roller 20 and a shaft 19a that are in contact with the cassette 101 at the tip, and is rotated by the clockwise rotation of the cassette extruded body 19 that is rotated by being pushed by the end surface of the cassette 101 into which the roller 20 is inserted. The shaft 19a has a protrusion 17a and a slit 17b formed at one end of the stopper 17.
Engage with.

The three shafts 10c of the frame body 10 have three grooves on the sliding body 15.
Engages and penetrates 15f, and further the slit 8 of the guide plate 8
c and the slits 9d and 9e provided in the guide plate 9, the sliding body 15 slides, and the frame body 10 moves up and down by a vertical drop of the groove 15f having a step. Mobile unit 13
The three shafts 13a of the slide body 15 have three inclined end surfaces.
The slits 8d and 15g that are engaged with the guide plate 8 and that are provided on the guide plate 8 and that are provided on the guide plate 9
Is engaged with.

Further, the three spring hook portions 13b of the moving body 13 penetrate and project through the escape racks 8e, 8f of the guide plate 8 and the escape holes 9h of the guide plate 9, respectively, and have the spring hook portions 8g of the guide plate 8. The tension springs 23, 24, and 25 are hooked between 8h and a spring hooking portion (not shown) provided on the guide plate 9 and urged downward. The moving body 13 moves up and down by the vertical drop of the inclined end surface 15g according to the sliding movement of the sliding body 15. A part of the convex portion 11b of the pressing body 11 comes into contact with the moving body 13 when the moving body 13 descends.

The present invention configured as described above operates as follows.

Now, when the cassette 101 is inserted into the frame body 10, the roller 20 is pressed against the end face of the frame body 10 and the push-out body 19 is rotated clockwise,
The shaft 19a contacts the convex portion 17a of the stopper 17, and the stopper 17 is rotated counterclockwise. Roller 18 of stopper 17
Is engaged with the end surface 15d in an arc shape of the sliding body 15 and the movement of the sliding body 15 is stopped. At that time, the shaft 10c of the frame body 10 is
And the shaft 13a of the moving body 13 is the slanted end surface 15 of the sliding body 15.
g and the groove 15f, the frame 10 and the moving body are engaged.
13 is located at the upper side and the state is shown in FIG.

The end portion 11c of the pressing body 11 is stopped by abutting against the top plate 16 which is a pressing body locking means, and the contact portion 11d which is pressed by contacting the core 103 is separated from the core 103. It does not hinder the insertion of the cassette into 10. When the stopper 17 rotates counterclockwise and the roller 18 passes over the arcuate end surface 15d of the sliding body 15, the locking is released, and the sliding body 15 is biased and starts moving in the direction of arrow A. At this time, the roller 18 is the linear end surface of the sliding body 15.
The stopper 17 stops rotating in the clockwise direction by coming into contact with 15e. Further, the shaft 19a of the cassette extrusion body 19 is a stopper.
When the cassette pusher 19 is engaged with the convex portion 17b, the counterclockwise rotation of the cassette pusher 19 is stopped, and the end face of the cassette 101 is not forcibly pressed while the cassette 101 is being lowered and mounted, the mounting is smoothly performed. Will be seen. As the sliding body 15 is moved in the direction A, the frame body 10 and the moving body 13 descend, and the frame body 10 finishes descending first. Positioned in
The pressing body 11 is biased clockwise by the spring 12, and the abutting portion 11d pushes the upper surface of the pressing body 11 so that the core 103 is completely attached to the spindle 5.

When the sliding body 15 is further lowered, the moving body 13 is also lowered and a part of the sliding body 15 is brought into contact with the convex portion 11b to rotate the pressing body 11 in the counterclockwise direction and the state shown in FIG. 4 is obtained.

In this state, the biasing force exerted by the spring 12 on the clockwise pressing body 11 disappears, and the moving body 13 is further lowered to push the pressing body 11.
When 11 is rotated further in the counterclockwise direction, the spring 12 rotates the pressing body 11 in the counterclockwise direction, and the lowering of the sliding body 15 and the moving body 13 is completed. become. The pressing body 11 is stationary with the end slit 11e in contact with the top plate 16, and the pad 14 provided on the moving body 13 is also lowered to a predetermined position. When the spindle 5 is rotationally driven by a driving device (not shown), the core 103 attracted to the magnet 6 integrally rotates the magnetic sheet 102, and the magnetic head 7 moves to the pad 1.
By placing 4 in place, the magnetic sheet 12
Good contact is maintained and recording and reproduction are possible.

To take out the cassette 101, when the sliding body 15 is moved in the direction of the arrow B, the moving body 13 and the frame body 10 operate in the opposite manner to the above-described mounting, and the moving body 13 first starts to move up. Next, the frame body 10 rises. Accordingly, the pressing body 11 slit 11
The e is pushed by the top plate 16 and pivots in the clockwise direction to the state shown in FIG. 6, and the spring 12 no longer urges the counterclockwise direction. When the frame body 10 is further raised and the pressing body 11 is further rotated in the clockwise direction, the pressing body 11 is now biased by the spring 12 and is rotated in the clockwise direction.

At that time, since the core 103 is separated from the contact portion 11d of the pressing body 11 by a predetermined amount, there is no problem even if the spindle 5 is inertially rotated.

When the sliding body 15 has completed the movement and the moving body 13 and the frame body 10 have finished rising, the state shown in FIG.
11c abuts against the top plate 16 and stops. At that time, the abutting portion 11d of the pressing body 11 is separated from the core 103, and the magnetic head 7 and the pad 14 are also separated from the cassette 101. The cassette 101 inside can be moved. Further, since the roller 18 of the stopper 17 engages with the arcuate end surface 15d of the sliding body 15 when the sliding body 15 finishes moving, the stopper 17 rotates by a predetermined amount by the urging force, so that the stopper 17 is projected. The lock of the cassette push-out member 19 by the portion 17b is released, the end is rotated counterclockwise until it abuts on the lock pin 16f of the top plate 16, and the roller 20 at the tip pushes the end surface of the cassette 101,
The cassette 101 is pushed out of the frame 10 by a predetermined amount, so that the cassette 101 can be manually taken out.

(Effects of the Invention) As will be apparent from the detailed description above, the present invention constitutes a mounting device for a center core in a front loading type magnetic cassette drive device that can be mounted simply by inserting a cassette. Since the center core can be steadily attached to the spindle with a simple configuration,
It has a great effect in practice.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of an embodiment of the present invention, FIGS. 2 to 6 are operation explanatory views of an essential part of a center core mounting device of the present invention, and FIG. 7 is a perspective view showing a magnetic cassette, 8 to 10 are explanatory views of a main part of a conventional magnetic cassette drive device. 1 ... Substrate, 5 ... Spindle, 10 ... Frame, 11
...... Pressing body, 12 ...... Spring, 13 ...... Moving body, 15 ...... Sliding body, 16 ...... Top plate, 17 ...... Stopper, 18 ...... Roller, 19 ...
… Cassette extruded body, 101 …… Cassette, 102 …… Magnetic sheet, 103 …… Center core.

Claims (2)

[Claims] 1. A magnetic cassette housing a rotatable magnetic sheet supported by a center core, wherein a first position at which the magnetic cassette can be inserted or taken out and a center core in the magnetic cassette are engaged with a spindle on the apparatus main body side. Transfer the magnetic sheet to and from a second position in which it can be rotated,
A center core mounting device for securely engaging the center core with the spindle, the frame body accommodating and moving the magnetic cassette, the pressing body rotatably held by the frame body and pressing the center core, An elastic body capable of urging the pressing body in a first direction in which the center core is engaged with the spindle and a second direction opposite thereto with the predetermined rotating position of the pressing body as a boundary, and a magnetic cassette. After contacting the pressing body after the transfer to the second position is completed, the pressing body is moved in the second direction beyond the predetermined rotation position against the bias of the elastic body in the first direction. The magnetic cassette is provided with a first position in which a moving body that rotates to reverse the biasing direction of the elastic body to the pressing body to the second direction and a pressing body locking unit that locks the rotation of the pressing body. At some point, the pressing body is moved in the first direction by the elastic body. Together is energized and stopped at a position apart from the center core by the pressing member locking means,
During the movement of the magnetic cassette from the first position to the second position, the pressing body and the pressing body locking means are disengaged from each other, and the pressing body comes into contact with the center core to press the center core against the spindle, and the magnetic cassette is moved to the second position. After the transfer to the position, the pressing body is biased in the second direction and is stopped by the pressing body locking means so as to be separated from the center core and stopped, and the magnetic cassette is moved from the second position to the first position. During the transfer, the pressing body is rotated in the first direction beyond the predetermined rotation position against the bias of the elastic body in the second direction by the movement of the frame body and the pressing body locking means. A center core mounting device, wherein the urging direction of the elastic body to the pressing body is reversed to the first direction. 2. The reversal timing of the urging force to the pressing body during the transfer operation for transferring the magnetic cassette from the second position to the first position is after the center core has moved a predetermined distance from the spindle. The center core mounting device according to claim (1), characterized in that the pressing body locking means is arranged.