JPS6257158A - Magnetic recording device - Google Patents

Abstract

PURPOSE:To reduce the drawing-out force of a disk cartridge and to simplify a structure by constituting the circular-shaped part of a spring material so that the diameter of its circular arc becomes larger as a disk cartridge holding body moves to a recording and reproducing position from an inserting and drawing-out position. CONSTITUTION:An energizing spring 7 which abuts on a disk cartridge holding body 1 abuts at a point 7'a by a rotational motion which follows a movement to a disk cartridge inserting and drawing-out state from a disk cartridge agglutination state and uses the point 7d of an arm part 7c of the energizing spring as a supporting point. Therefore, by a deflection in the right and the left directions going to the center of the holding body 1 of 7'a from an abutting point 7a by the rotational motion of the arm part 7c, the roughly circular-shaped part 7b of the spring 7 is bent in the direction where a virtual circular radius (r) becomes small. Accordingly, as for the circular part 7b, the diameter of the circular arc becomes larger as the holding body 1 moves to a recording and reproducing position from an inserting and drawing-out position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for moving a disk cartridge in a magnetic recording device from an insertion/removal position to a magnetic recording/reproducing position and for sticking to the main body of the magnetic recording device.

[Summary of the invention]

The present invention provides a mechanism for moving and sticking a disk cartridge in a magnetic recording device, in which the means for configuring the force for urging the movement and sticking of the disk cartridge is formed from an integral spring material (and the spring material is at least It has a contact portion that presses the disk cartridge and a substantially arc-shaped portion that applies a biasing force to the contact portion,
Further, the diameter of the arc of the substantially arc-shaped portion increases as the disk cartridge holder moves from the insertion/extraction position to the recording/reproducing position, thereby moving the disk cartridge from the recording/reproducing position to the disk cartridge insertion/extraction position. This reduces the amount of effort required to remove the disk cartridge when removing it from the magnetic recording apparatus, making the operation of the magnetic recording apparatus easier, and further simplifying the structure.

[Prior art]

Figure 7 (a) shows a disk car in a conventional magnetic recording device) IJ Tsuji movement/glue! Schematic plan view of the mechanism, Fig. 7 (b
) is a schematic side sectional view, and FIG. 7(c) is a schematic front sectional view.

The disk cartridge holder 11 holding the disk cartridge 2 is connected to the frame 14 via a slide bin 15 disposed on the side of the disk cartridge elevating member 15 which is slidable in the direction of the arrow shown in FIG. 7(b). a positioning pin 16 that slidably engages with the side through-hole 15a and slidably engages with the side opening 1aa of the frame 14 disposed on the side of the disk cartridge holder 11;
You can exercise freely within the regulated range.

The coil spring 17 has one end locked to the disk cartridge holder 11 and the other end locked to the frame 14, and always pulls the disk cartridge holder 11 in one direction.

FIG. 7(b) n fully shows the disc cartridge holder 11 in the state where the disc cartridge is pushed out.

The disk cartridge holder 11 is configured such that the slide bin 1S disposed on the disk cartridge holder 11 is moved by the spring force of the coil spring 17 to the side surface of the disk cartridge elevating member 15 and the lower wall 15c of the opening shown in FIG. This contact maintains the disk cartridge insertion/extraction position It in the magnetic recording device.

The disk cartridge elevating member 15 is shown in FIG. 7(b).
By moving in the medium pressure direction, the slide bin 15 reaches the opening lower part 15d while sliding 15 byft on the lower wall slope of the opening of the lifting member 15, and the disk cartridge holder 11 moves between the positioning bin 16 and the frame side opening 14a. As a result of this, the movement of the intermediate pressure in the right direction as shown in FIG. 7(b) is suppressed and the pressure is lowered. The slide bin 13 is located at 15+ of the opening.
1, the disk cartridge 2 is placed in a position where magnetic recording and reproduction is possible, and the coil l"f
The spring force of the spring 17 causes it to stick to the main body of the magnetic recording device.

The disk cartridge holder 11 can be returned to the disk cartridge insertion/extraction position by moving the elevating member 15 toward the inside of the slide bin 1 as shown in FIG. 7(b).
5 is pushed up to the position 15c in the figure.

[Problems and Objectives to be Solved by the Invention] In a device using the conventional disk cartridge moving/closing mechanism with the above structure, the coil spring must be placed on the side of the device due to restrictions on the shape of the coil spring. However, the shape of the spring locking part becomes complicated, and in order to obtain a stable spring load, the coil springs are placed on the left and right sides of the disk cartridge holder.
It is necessary to cast at least two characters, making the structure complicated.

As the disk cartridge holder moves from the magnetic recording and reproducing position to the insertion/extraction position, the biasing force exerted by the coil spring on the disk cartridge holder increases, and reaches its maximum at the disk cartridge insertion/extraction position, where the large biasing force is not fully configured. , the disk cartridge removal force required to move the disk cartridge from the magnetic recording/reproduction possible position to the disk cartridge insertion/extraction position and remove it from the magnetic recording device is large, and the operation of the magnetic recording device becomes mirror-like. There was a problem.

Therefore, the present invention solves the above problems.
The object is to provide a magnetic recording device having a mechanism for moving and sticking a disk cartridge, which is simple in structure and easy to operate.

[Failure to solve the problem]

The magnetic recording device of the present invention inserts a disk cartridge containing a magnetic medium from an insertion/extraction position to a position of 1f where recording and reproduction is possible.
a disk cartridge holder to be moved and placed in the thickness direction; and means for configuring a biasing force for moving the disk cartridge holder to the position where recording and reproduction are possible;
and supporting and storing the disk cartridge holder b
In a magnetic recording device comprising a magnetic recording device main body, the means constituting the biasing force is formed from an integral spring material, and the spring tip applies biasing force to at least a contact portion that suppresses the disk cartridge and a contact portion. The disc cartridge has a substantially arc-shaped portion that applies a pressure, and the diameter of the arc of the substantially arc-shaped portion increases as the disk cartridge holder moves from the insertion/extraction position to the recording/reproducing position.

[Effect]

According to the above configuration of the present invention, the disk cartridge inserted into the magnetic recording device is supplied by the biasing force forming means to move the disk cartridge holder from the disk cartridge insertion/extraction position to the recording/reproducing position. The disk cartridge holder receives an urging force that increases as it moves, and moves up and down with the movement of the disk cartridge elevating member, thereby moving between the disk cartridge insertion/extraction position and the recording/reproducing position, and at the recording/reproducing position. is stuck to the main body of the magnetic recording apparatus by the biasing force supplied by the biasing force forming means that is transmitted via the disk cartridge holder.

In this specification, stalemate refers to a state in which the disk cartridge does not move slightly due to some disturbance and maintains a position where recording and reproduction is possible, as if it were fixed on a bank.

〔Example〕

FIG. 1(a) is a schematic plan view of an embodiment of the disk cartridge moving and sticking mechanism according to the present invention, FIG. 1(b) is a schematic side view, and FIG. 1(c) is a schematic front sectional view. .

1 and 2 are disk cartridge holders that have approximately sheet metal bending grooves for guiding the disk cartridges 2, and a frame serving as the shell of the main body of the device is connected to the disk cartridge holder via a slide bin S provided on the side surface of the disk cartridge holder. 4, it is slidably engaged with a side through opening 5a of a disk cartridge elevating member 5 that is slidable in the direction of the arrow shown in FIG.
17) Side opening 4a of the frame 4 arranged on the side
It is possible to freely move within the range regulated by the positioning pin 6 which is slidably engaged with the opening 4a.

7 is the disk cartridge holder 1 and FIG.
) The bent portions 7d at both ends of the arm portion 7C extending from the substantially arc-shaped portion 7b to both sides are rotatably engaged with the side wall of the frame 4 as a fulcrum 7dfe by a biasing spring abutting at the center 7a. , further, both ends 7e of the spring extending from the biasing spring arm 7C form a through opening 4b provided in the side wall of the frame 4.
is slidably engaged with at least one point on the inner wall of the disk cartridge holder 1, and constantly applies an urging force to the disk cartridge holder 1 in the direction of the middle arrow f13Q(c).

FIGS. 1(a), (b) and (c) show the disk cartridge holder 1 in the magnetic recording and reproducing state.
It shows what is going on.

The disk cartridge 2 held in the disk cartridge holder 1 comes into contact with the flat surface of the disk cartridge positioning bin 4C that protrudes from the frame 4, and the disk cartridge holder 2 is pressed against the disk cartridge holder by the biasing spring 7 via the disk cartridge holder 1. In response to the biasing force toward 1,
Frame 4 is dressed with W.

For example, although not shown in the drawings, the disk cartridge elevating member 5 pushes a push button formed integrally with the disk cartridge elevating member 5 and protruding outward from the front surface of the magnetic recording device in the medium pressure direction (FIG. 1(1)). By moving the slide bin 5 disposed in the disc cartridge holder 1 in the right direction as indicated by the arrow in FIG.
3t-slides, and by the engagement of the disk cartridge holder 111 positioning bin 6 and the frame side opening 4a, the left and right movement in FIG. 1(b) is suppressed, and as the slide bin 5 slides on the slope. Rise. When the slide bin 5 reaches the position shown by the middle line in FIG. It becomes possible to insert and remove the magnetic recording device inside and outside the IT circle.

FIG. 2 is a schematic front sectional view of the disc cartridge holder 1 when the disc cartridge is inserted and removed.

The biasing spring 7 that comes into contact with the disk cartridge holder 1 at 7a in FIG. 7'a in FIG.
Due to the rotational movement of the arm portion 7C, the contact point 7'a is displaced in the left-right direction toward the center of the disk cartridge holder 1 in FIG.
The substantially arc-shaped portion 7b of the biasing spring 7 has a virtual arc radius r
will be deflected in the direction of decreasing.

FIGS. 5(a) and 5(b) both show the biasing spring 7.
FIG. 2 is a schematic diagram of a state in which the disc cartridge holder 1 is bent as the position changes. In FIGS. 5(a) and (b'1), the free state shape of the biasing spring 7 is shown by a dashed line, the solid line shows the shape of the spring when the disk cartridge holder 1 is in the position where magnetic recording and reproduction is possible, and the disk cartridge holding body 1
The broken line shows the shape of the spring when the disk cartridge insertion/extraction position is 1tK.

In FIG. 5(a), the deviation δ that occurs when the biasing spring 7 changes from its free state shape to the shape when it is in the position where magnetic recording and reproduction is possible in the disk cartridge holder 1;
], the substantially arc-shaped portion 7b of the biasing spring is deflected in a direction that decreases from the arc radius rl in the free state to rl, and the deflection force due to the deflection is determined by the shape and degree of freedom of the biasing spring 7. Due to the constraint, the force is generated as shown in Fig. S (a).

The force F is applied to the arm portion 7 of the biasing spring 7 as a component force.
F is divided into a force F along C, and a force F perpendicular to the plane of the disk cartridge holder.

This force is the adhesion force of the disk cartridge 2 to the frame 4 caused by the biasing spring 7 when the disk cartridge holder 1 is in the position where magnetic recording and reproduction is possible.

FIG. 5(b) compares the deflection state of the biasing spring 7 when the disk cartridge holder 1 is in the magnetic recording/reproducing position and when it is in the disk cartridge insertion/extraction position. The rotation of the arm portion 7c of the biasing spring 7 about the 7 dft fulcrum is caused by the amount of deviation δ in the moving direction when the disk cartridge holder 1 moves from the magnetic recording/reproducing position to the disk cartridge insertion/extraction position. Due to the amount of deviation δ in the direction perpendicular to the moving direction of the disk cartridge holder 1 from the contact point 7a to 7'a, the approximately arc-shaped portion 7b of the biasing spring 7 has an arc radius r, which is even smaller than r. The deflection force due to the deflection is generated as a force F.

In addition, the above-mentioned deflection force is calculated as
The deflection force occurs equally at a and 7'a, but for convenience, the deflection force is shown at the contact point on one side in FIG. 5(b). A component force F of the force F4 in a direction perpendicular to the plane of the disk cartridge holder 1 moves the disk cartridge holding member 1 through the slide bin 5 of the disk cartridge elevating member 5 shown in FIG. 1(b). This acts as a pressing force against the opening lower wall 5c, and the disk cartridge holding member 1 maintains the disk cartridge insertion/extraction position.

FIG. LI#4 is a diagram showing the force relationship between the biasing spring 7 and the disk cartridge holder 1 at the half-contact point 7a.
F is the force generated by the deflection of the substantially arc-shaped portion of the biasing spring 7, IF is the force along the arm portion 7C of the biasing spring 7 as the right component force, and F is the component of F. As the force, a force in a direction perpendicular to the plane of the disk cartridge holder 1, which is a biasing force for the disk cartridge holder 1, is shown.

Assuming that the angle formed by the disk cartridge holder plane shown by 1a in FIG. 4 and the arm portion 7C of the biasing spring 7 is 0, the force F is given by the following equation.

Fl = F, X tanθ − (11+1)
The formula shows that as θ becomes smaller, the component force in the F direction of F becomes smaller. That is, the ratio of the deflection force of the biasing spring 7 contributing to the biasing force of the disk cartridge holder 1 is such that the θ becomes smaller as the disk cartridge holder 1 approaches the disk cartridge insertion/extraction position of the magnetic recording device. It will continue to decrease.

FIG. 5 is a diagram showing the relationship between bending moments at arbitrary positions of the substantially arc-shaped portion 7b of the biasing spring 7.

The solid line in FIG. 5 shows the shape of the approximately arc-shaped portion when the disk cartridge holder 1 is in the position where magnetic recording and reproduction is possible, and the broken line shows the shape of the approximately arc-shaped portion when the disk cartridge holder 1 is moved in the direction of the disk cartridge insertion/extraction position. This is the shape of the substantially arc-shaped portion in this case. In FIG. 5, the deflection forces P1 and F4 lines of action m of the biasing springs 7 at each position of the disk cartridge holding member 1 are shown coincident for convenience.

The bending moment at any point
It is expressed as the product of g, and the smaller the arc radius r, the longer the distance j becomes. That is, the bending moment at any point increases as the substantially arc-shaped portion 7b deflects in the direction where the arc radius r becomes smaller, but since the distance 1 also increases, the deflection force F
does not increase enough to match the bending moment increase a.

In other words, within the range of the amount of deflection in this embodiment, the biasing spring 7 can be deflected following the movement of the disk cartridge holder 1 without substantially changing the deflection force F.

Due to the synergistic effect of the component force change of the deflecting force of the biasing spring 7 and the deflection force change described above, the biasing force applied by the biasing spring 7 to the disk cartridge holder 1 can be applied to the magnetic recording that requires the biasing force. It shows a tendency that it is large at the playable position and becomes smaller as the position of the disc cartridge holder 1 moves to the disc cartridge insertion/extraction position.

By setting the shapes and dimensions of the substantially arc-shaped portion 7b, arm portion 7C, etc. of the biasing spring 7 to predetermined dimensions, it is possible to easily create a biasing spring exhibiting an arbitrary deflection-load curve having the above-mentioned tendency. It is possible to design.

FIG. 6 is a diagram showing the measurement results of the deflection and load curve of the biasing spring 7 in this embodiment.

In the diagram, the vertical axis indicates the biasing force of the biasing spring 7 on the disk cartridge holder 1, and the horizontal shelf indicates the position of the disk cartridge holder 1 in the magnetic recording device 1, and the magnetic recording/reproduction possible position it ftA, B indicates the insertion/extraction position of the disk cartridge.

According to the deflection-load curve 8 in FIG.
The biasing force decreases as the position approaches the disk cartridge insertion/extraction position.

Although this embodiment describes the case where the front 11-pin biasing spring and the disk cartridge holder have two contact points, the present invention is also applicable to cases where the number of contact points is one or five. It is possible.

[Effects of the Invention] As described above, according to the present invention, the means for moving the magnetic recording device and configuring the biasing force in the glue layer m structure are formed from an integral spring material, and the spring material is The disc cartridge has at least a contact portion that presses the disk cartridge and a substantially arc-shaped portion that applies a biasing force to the contact portion, and the substantially arc-shaped portion is configured to prevent the disk cartridge holder from recording from the insertion/extraction position. By configuring the arc to increase in diameter as it moves to the playback position,
It has the effect of reducing the disk cartridge removal force required when moving the disk cartridge from the recording/reproduction possible position to the disk cartridge insertion/extraction position and removing it from the magnetic recording device, and making the operation of the magnetic recording device easier; Furthermore, it also has the effect of simplifying the S legacy.

[Brief explanation of drawings]

FIG. 1(a) shows the uninvented disk cartridge movement and
FIG. 1(b) is a schematic plan view showing one embodiment of the sticking mechanism, FIG. 1(b) is a schematic side view, and FIG. 1(c) is a schematic front sectional view. Figure m2 is a schematic front sectional view when the disc cartridge holder is in the disc cartridge insertion/removal state. FIGS. 3(a) and 5(b) are schematic diagrams showing the deflection state of the biasing spring in each state. FIG. 4 is a diagram showing the force relationship at the point of contact between the biasing spring and the disk cartridge holder. Figure 5 is a diagram showing the relationship between bending moments at arbitrary points of the biasing spring. FIG. 6 is an actual measurement diagram showing the measurement results of the deflection-load curve of the biasing spring in this practical example. Figure 7 (a) shows the conventional disk cartridge movement/stagnation 4! ! ! FIG. 7(b) is a schematic plan view showing an ellipse, FIG. 7(b) is a schematic side sectional view, and FIG. 7(c) is a schematic front sectional view. 1...Disk cartridge holder 2...Disk cartridge 4e-Dream frame 7...Biasing spring or more (see Figure 1 CQ) Mendan Figure 1 Cb) Taku'i Great Sword - Hiri Soshiji Pii: 1 sentence] 4/)
Saliva Seimen iBo page 1 ■ Figure 2 Di Mata Gua) - Tori'7jiffy@・qLJ Iso Tachibana, 76
8Jjf'r @ IH Figure 1 cc) Seventy-one knights 1-cho Nenor:, Wato 1-kagi Meba 1-Ushi l 躬 Figure 3 (
Illusion No. 3 cb) 1B5 Figure energized L shift of Kwami Ichijutsu Denkyoku Kousou No. 61! Q Figure 7 (α) arai, f) Another person's sword - Tori Tsuzuginden Kyousatsu - Kohan. f-, 1-plane supply surface Figure 7 CC,)

Claims (1)

[Claims] A disk cartridge holder that moves and places a disk cartridge containing a magnetic medium in the thickness direction from an insertion/extraction position to a position where recording and playback is possible; and a disk cartridge holder that moves the disk cartridge holder to the position where recording and playback is possible. In a magnetic recording device comprising means for forming a biasing force and a magnetic recording device main body for supporting and housing the disk cartridge holder, the means for forming the biasing force is formed from an integral spring material, and the spring member has at least a contact portion that presses the disk cartridge and a substantially arc-shaped portion that applies a biasing force to the contact portion; A magnetic recording device characterized in that the diameter of an arc increases as it moves to a reproduction position.