JPS63273254A - Cassette loading device - Google Patents

Abstract

PURPOSE:To enable an operation only by pushing a door by pushing in and descending the sliding member being guided in front and in rear, and above and below with the movement closing a door, and drawing a chucked cassette to the sliding member into a loading position. CONSTITUTION:At the time when the sliding member 28 chucking a cassette 10 by linking to the movement closing a door 48 is drawn by a distance H to the back part, this sliding member 28 and a cassette holder 27 are descended by the height V downwards together with the cassette 10. The movement at this time is surely performed on each the amt. corresponding to the movement closing the door 48 by mechanically guiding fitting pins 32A, 36A, 32B, 36B by the cam fitting parts 60A, 60B, 61A, 61B formed on loading plates 50, 51. Namely the movement of cassette loading is performed in the state of completely non-impact.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette loading device for loading a floppy disk cassette, video tape cassette, or the like inserted through an opening into a drive device.

[Prior art]

In computers, word processors, audio equipment, etc., floppy disks and magnetic tapes as recording (recording) and playback media are generally stored in cassette cases, and these devices have a cassette installed in a position opposite the head. A cassette loading device is provided for loading into the cassette.

There are two types of cassette loading devices: those that automatically load the cassette by operating a motor upon detecting the insertion of the cassette or operating a switch, and those that load purely mechanically by hand.
The present invention relates to the latter structure of a cassette loading device that is operated only manually.

Generally, this cassette loading device chucks a cassette inserted to a certain depth from an opening at a cassette mounting position, further introduces the cassette holding member to the cassette mounting position and locks it, and releases the lock when removing the cassette. The cassette holding member is returned to the ejecting position (substantially the same as the chucking position), and the cassette is taken out from there.

(Problems to be Solved by the Invention) By the way, in conventional cassette loading devices, after opening the door and inserting the cassette through the opening, levers or the like installed near the door (on the front panel) or By operating buttons, etc., the cassette was pulled into the loading position and pulled back to the discharge position.

However, in such conventional cassette loading devices, after inserting the cassette and closing the door, it is necessary to separately operate a lever, button, etc., and the operation is complicated and there are many cases of erroneous operation.

In addition, since the front panel has operating levers and buttons protruding from the front panel, it is not possible to achieve a flat nose, which is not only undesirable in terms of design, but also causes problems such as wasted space during installation and packaging. There was also.

[Means to solve the problem]

The present invention has been developed in view of the above-mentioned prior art, and it is extremely easy to operate when loading and unloading a cassette, and there is nothing protruding from the front panel, making it possible to completely realize a flat nose. To provide a cassette loading device which has an excellent design and can eliminate wasted space.

The present invention achieves the above-mentioned object by using a cassette loading device characterized in that, by the movement of closing a door, a sliding member guided forward and backward and up and down is pushed and lowered, and a cassette chucked by the sliding member is pulled into a mounting position. The goal is to achieve the following.

〔Example〕

The present invention will be specifically described below with reference to the drawings.

FIG. 13 is a back (bottom) view of a floppy disk cassette IO suitable as a cassette to be loaded into the cassette loading device according to the present invention.

In Fig. 13, upper and lower cassette shells IIA and 11B
A floppy disk 12 is rotatably supported within the case formed of. The floppy disk 12 has its hub (disk hub) 13 pivoted at the center of the cases IIA and IIB.

The end surface of the hub 13 is formed of a magnetic material, and the hub 13 is positioned and mounted by adhering the end surface to a magnet support surface of a drive shaft that is pivotally supported by the cassette loading mounting section.

A recess (notch) 14 is formed at both end edges of the lower surface of the cassette 10, with which a cassette holding claw of a chuck link of a chucking means, which will be described later, engages. - Also, positioning pins provided at the base of the cassette mounting section engage with the lower surface of the cassette 10, and positioning holes 15A, 15B, 15 are provided for accurately determining the position of the cassette.
c, 15D are provided.

An opening 16 is formed in the lower cassette shell IIB to expose the head-facing portion (usually provided on two upper and lower surfaces) of the disk 12, and the opening 16 allows a sliding shutter 17 to move left and right. It is opened and closed by This shutter 17 is biased in the closing direction by a torsion coil spring or the like, and is opened in conjunction with the pulling operation when the cassette is attached. The shutter 17 is formed with a recess (or notch) 18 into which an engaging protrusion of a shutter opener, which will be described later, engages.

In addition, in FIG. 13, the shutter 17 is located between the closed position and the open position.

The left side of the tip of the cassette 10 (the right side in the back view of Figure 13)
has an inclined surface (slide surface) 19 to prevent incorrect insertion.
is formed.

In addition, in order to prevent rotational vibration of the disk 12, a stabilizer 20 is attached to the back surface of the illustrated cassette 10, which applies a predetermined pressure to the disk 12 by being abutted by springs or the like from above and below at the mounting position. There is.

Furthermore, write protectors 21 are provided at the corners of the cassette 10 to prevent accidental erasure.

FIG. 1 is a plan view of the essential parts of the cassette loading device according to the present invention, with the upper half showing the cassette insertion door open and the lower half showing the door closed.

Figure 2 is the left side composition with a part removed from the line ■-■ when the door is opened in Figure 1, and Figure 3 is the same line n-- as in Figure 2.
This is the left side view from n with some other parts removed.

Fig. 4 is a partially removed right side view taken from the line IV-EV when the door is closed in Fig. 1, and Fig. 5 is the same line rV as Fig. 4.
- It is a right side view with other parts removed as seen from IV.

FIG. 6 is a partially omitted cross-sectional view when the door is opened, taken along line Vl--Vl in FIG. 1.

In Figures 1 to 6, the loading device is the left side plate 2 fixed to the machine frame of the drive device, etc.
5 and a right side plate 26, a cassette holder 27 guided up and down by the left and right side plates 25 and 26, and a slide member (
A cassette holding member) 28 is supported.

As shown in FIG. 6, the cassette holder 27 has a cross-sectional shape having guide portions 31A and 31B on the left and right lower sides so as to accommodate and hold the cassette 1-10 slidably in the front and back directions.
The slide member 28 is supported so as to be slidable in the front and rear directions relative to the cassette holder 27.

First, the cassette holder has engaging pins 3 provided on the left and right sides.
2A and 32B are formed on the left and right side plates 25.26 of the vertical guide 1133A.

33B so that it can be moved up and down.

The slide member 28 has longitudinal long grooves (guide grooves) 34A, 34B, and 34C formed at three locations, and engagement pins 35A, 35B, and 35 implanted in the cassette holder 27.
By engaging with C, the cassette holder 27 is slidably engaged with the cassette holder 27 in the front-back direction.

Furthermore, this slide member 28 has engaging pins 36A and 36B provided on both sides of the slide member 28 on the left and right side plates 25.
26, that is, guide grooves 37A and 37B having a horizontal portion and a vertical portion.

A chuck link 43 having a cassette holding pawl 42 that engages with the chuffing recess 14 of the inserted cassette is pivotally supported on a pivot point 41 provided on the slide member 28 . This cha, the clink 43 is the slide member 2
8 is biased counterclockwise in FIG.

When the cassette IO is inserted and the inclined surface of the cassette collides with the cassette holding claw 42 of the chuck link 43, the cassette holding claw 42 is pushed outward, the chuck link 43 rotates clockwise, and the cassette holding claw 42 rides on the side of the cassette 10 and begins to slide.

When the cassette 10 is pushed further and reaches the chucking position (or ejecting position), the cassette holding claw 42 is pushed into the recess 14 of the cassette 10 by the spring force, and the cassette 10 is moved to the chuck link 4 biased by the spring 44.
It is chucked by the pressing engagement of No. 3 and held so as to move in the front and rear direction together with the slide member 28.

If the cassette 10 is incorrectly inserted and the inclined surface 19 is not on the chuck link 43 side, the cassette 10 will collide with the chuck link 43 and be stopped, and cannot be inserted into the discharge position.

FIG. 9 is a front view of the cassette loading device.

A front panel 46 having an opening 45 for inserting a cassette is provided on the front of the cassette loading device, and the opening 45 is opened and closed by a door 48 that rotates around a pivot point 47 .

On the other hand, left and right loading plates 50 and 51 are provided on both sides of the cassette loading device, that is, left and right side plates 25 and 26, and are moved in the front and rear directions in accordance with the opening and closing operations of the door 48.

That is, the pivot shafts 52A provided on the left and right sides of the door 48
, 52B have left and right door links 53A, 53, respectively.
One end of B is rotatably connected, and these door links 5
The other ends of 3A and 53B are rotatably connected to the front ends of left and right loading plates 50 and 51 via pivots 54A and 54B, respectively.

The left and right loading plates 50, 51 each have two guide grooves 55A, 55B and 56A, 56B.
are formed, and each guide groove has engaging pins 57A, 57B implanted in the left and right side plates (fixed) 25, 26,
58A and 58B are slidably engaged.

In addition, each guide groove 55A, 55B and 56A, 56B
are formed symmetrically, and these guide grooves are formed horizontally to guide each loading plate 50, 51 in the horizontal direction, but in the illustrated example, each guide groove has an inclined groove at the end. Engagement cam parts 60A, 60B, 61
A, 61 is formed.

These engaging cam parts 60A, 60B and 61A, 61
B indicates the left and right engaging pins 32 of the cassette holder 27.
A, 32B and the left and right engaging pins 36A, 36B of the slide member 28 are slidably engaged, and the cassette holder 27 is guided up and down by the back and forth movement of the left and right loading plates 50, 51, and the slide member 2
This is for guiding 8 back and forth and up and down.

The left and right loading plates 50.51 are constantly urged in the return direction (discharge direction) by tension springs 62A and 62B stretched between the left and right side plates 25.26.

In this way, the slide member 28 that has chucked the cassette 10 moves in conjunction with the movement of the door 48 from the open position shown in FIGS. 2 and 3 to the closed position shown in FIGS. 4 and 5, that is, the movement of closing the door 48. When the slide member 28 and the cassette holder 27 are pulled inward by a distance H (FIG. 2), both the slide member 28 and the cassette holder 27 are moved downward by a height V together with the cassette 10.

The movement at this time is the cam engaging portions 60A, 61A, 60B formed on the loading plate 50.51.

By mechanically guiding the engagement pins 32A, 36A, 32B, and 36B at 61B, it is ensured that the movement of closing the door 48 is performed by an amount corresponding to the movement.

In other words, the above-mentioned cassette loading movement is not performed with the elastic force of a spring (it is performed completely without impact).

FIG. 8 is a diagram showing the top surface of the cassette holder 27. As shown in FIG.

In FIG. 8, on the left and right sides of the upper surface of the cassette holder 27 are plate springs 64A and 64B for pressing the cassette IO.
are attached, and both ends of these leaf springs are inserted into openings 65A, 66A, 65 formed in the cassette holder 27.
B, protrudes downward from 66B, and the cassette holder 27
The upper surface of the cassette IO inserted therein is pressed against the guide portions 31A and 31B (FIG. 6) to hold the cassette 10 in a state without wobbling.

As mentioned above, the chuck link 43 for chucking the cassette 10 is attached to the slide member 28 via the pivot point 41, and the slide member also functions as a cassette holding member.

The slide member 28 has the cassette holding claw 42 (FIG. 1) pressed into engagement with the recess 14 (FIG. 13) of the cassette IO by the spring 44, that is, the cassette 10
Stoppers 67A, 6 that come into contact with the front end surface of the cassette IO to prevent excessive penetration when the cassette IO is chucked.
7B (FIGS. 1 and 6) is provided. The stoppers 67A, 67B are formed by integral protrusions bent downward from the slide member 28, and in the illustrated example,
Long hole 68A in the longitudinal direction formed in the cassette holder 27
, 68B so that the stoppers 67A, 67B protrude downward through them, thereby creating a structure that does not hinder the cassette lO drawing operation.

FIG. 1θ is a partial plan view showing the opening/closing mechanism of the shutter 17 (FIG. 13) that closes the opening 16 of the cassette 10 and its operation.

In FIG. 1 and FIG. 1θ, as described above, the guide groove 34C is an elongated hole in the longitudinal direction formed in the slide member 28.
is engaged with an engagement pin 359 implanted in the cassette holder 27, and the slide member 28
It moves relative to the front and rear direction.

A shunter opener 71 is rotatably supported on the slide member 28 via a pivot point 70. A shutter 17 for opening and closing the opening 16 of the chucked cassette 10 is provided at the tip of the shutter opener 71.
An engaging protrusion 72 that engages with the recess 18 is integrally formed.

Further, the shutter opener 71 is formed with a cam groove 73 that engages with an engagement pin 35C implanted in the cassette holder 27.

When the slide member 2B that has chucked the cassette 10 moves backward relative to the cassette holder 27, that is, when the cassette 10 is pulled in, the cam groove 73 engages the engaging protrusion 72 of the shutter opener 71 in accordance with the movement. It has a shape that allows it to be moved relative to the slide member 28 (and therefore relative to the cassette 10) in the shutter opening direction (from left to right).

Furthermore, an opening lower portion 4 is formed on the upper surface of the cassette holder 27 to prevent movement of the engaging protrusion 72 of the shutter opener 71 in the shutter opening/closing direction.

The solid lines and chain lines in FIG. 1O indicate the chucking position (discharging position), and the two-dot chain line indicates the mounting position where the cassette 10 is pulled in.

In this way, cam means 35C171, 73 for changing the movement of the chucked cassette 10 into the movement of the cassette in the shutter opening/closing direction (left to right) is provided, and the recess 18 of the shutter 17 is provided in the shunter opening/closing direction moving portion of the cam means. A mechanism is constructed in which an engaging claw portion (engaging protrusion) 72 is provided, and the shutter 17 is moved in conjunction with the pushing (retraction) and ejecting (ejection) of the cassette 10 to open and close the opening 16.

FIG. 7 shows a state in which the cassette 10 is installed, that is, a state in which it is loaded.

In FIG. 1, when the cassette 10 is locked in the loading position with the shutter 17 open, the recording/reproducing head 100 is guided into the cassette through the opening 16 (FIG. 10I!l, FIG. 13) of the cassette 10. , operates to record (write) or read information while moving linearly (head feeding) in the front and back direction from the opening.

1 and 7, the base 75 has a pin 76 for positioning the cassette 10 (cases ILA, IIB).
A, 76B, 10IA, 10IB and the driving and positioning of the floppy disk 12 (height and planar position,
A rotary boss 77 for parallelism) is provided.

In the illustrated example, the positioning of the cassette 1O in the 76A, 76B,
The structure is implemented by l0IA and l0IB.

When the cassette 10 is pushed in and lowered by the movement of the aforementioned loading berets 50 and 51, the recesses 15A, 15B, 15G, and 15D (FIG. 13) of the cassette IO first engage the pins 76A, 76B, IOIA, and IOIB. At the same time, the hub 13 (FIG. 13) of the disk 12 comes into contact with the rotary boss 77, and the cassette 1O is positioned.

In particular, it is necessary to accurately position the disk 12 for writing and reproducing in relation to the head (not shown), and for this reason, for example, the rotary boss 77 and the hub 13 are of a magnetic attraction type, and the rotational position is adjusted to improve parallelism, centering, and rotational position. It is preferable to have a fitting structure that can accurately regulate the

The cassette holder 27 and the slide member 2B are connected to the engaging cam portions 60A and 60B of the loading plate 50.51.
The cassette 10 is pulled slightly further downward by the guide portions 31A, 61B, and gaps 78A, 78B are created between the guide portions 31A, 31B and the cassette IO.

Further, in the attached state, the cassette 10 is attached to the leaf spring 6.
4A, 64B, and therefore, the cassette 10 is elastically positioned between the leaf springs 64A, 64B and the pins 76A, 76B with a predetermined holding force.

In FIGS. 1 and 4, the cassette l-10 is locked in the mounting position (FIG. 7) by closing the door 48 between the right side plate 26 and the right loading plate 51, and the door is pushed again. The movement of the loading plate 50, 51 releases the cassette lO and releases the return spring 62 of the loading plate 50.
A lock-and-release mechanism 80 is provided which returns (ejects) the cassette 10 to the discharge position using the biasing forces of A and 62B.

FIGS. 11 and 12 are a front view and a sectional view (line A-A, line B-
B).

1, 4, 11, and 12, a lock link 81 is pivotally supported on the right side plate 26, and the right loading plate 51 cooperates with the lock link 81 to lock and release. An engagement pin 82 is implanted.

11 and 12, the lock link 8
1 is attached to a pin 83 implanted in the right side plate 26 so as to be rotatable and tiltable or displaceable in the axial direction. In the illustrated example, the lock link 81 is connected to the pin 83 by a coil spring 84 fitted to the pin 83.
The spring is biased toward the tip side.

The lock link 81 is biased by a spring 85 in the direction shown to the left in FIG. in the corresponding initial rotational position.

As shown in FIGS. 11 and 12, the lock link 8
1 is formed of a plate member, and the lock link 81 includes a cam portion 88 that is first contacted by the engagement pin 82 of the loading plate 51 that moves in parallel in the direction of arrow B, and is pressed and slid against the spring 85; a guide groove 89, a locking portion 9o in which the lock link 81 and pin 82 are in a stable locked state;
A release start part 91 into which the pin 82 enters when pressed twice, and a release guide part 92 that is inclined in the direction shown in FIG. 12 and is formed so that the pin 82 can ride over it.

The operation of this lock and release mechanism 80 is as follows.

After the cassette 10 is chucked and the door 48 begins to close, the loading plate 51 and the engagement pin 82 implanted therein move in parallel in the direction of arrow B.

When the cassette 10 is pushed in by a certain amount, the engagement pin 82 collides with the cam portion 88 of the lock link 81, and the upward force (as shown in FIG. 11) at that time causes the lock link 81 to release the spring 8.
5 in the clockwise direction (in FIG. 11).

When the engagement pin 82 further advances and passes through the cam portion 88 and reaches the entrance of the guide groove 89, the lock link 81 is moved by the spring 8.
The engagement pin 82 is rotated counterclockwise by the spring force of 5, and the engagement pin 82 is latched at the lock position 90. At this point, the closing operation of the door 48 is stopped.

In this position, it is in a stable locked state and the return spring 62
The loading plate 51, which is biased by the spring toward the entrance (leftward in FIG. 11) at B (FIG. 4), and the spring 85 move the first
The lock links 81, which are biased counterclockwise in FIG. 1, are stably engaged and held with each other.

This locked position corresponds to the cassette mounting position shown in FIG.

Next, the operation when taking out the cassette 10 will be explained.

To take out the cassette 10, it is only necessary to push the closed door 48 further (press it twice).

In FIGS. 11 and 12, closed door 48
(Fig. 4), the loading plate 51 is pushed a certain distance back against the spring 62B, and the engagement pin 82
When the engagement pin 82 comes out of the lock position 90 and moves slightly toward the back, the lock link 81
is rotated slightly counterclockwise by the spring 85, and the engagement pin 82 comes to the release starting portion 91. ' When the engagement pin 82 reaches the release start part 91, the spring 62
The engagement pin 82 of the loading plate 51, which is biased in the entrance direction (door 48 opening direction) at B, comes into contact with the release guide portion 92.

However, as shown in FIG. 12(A), this release guide portion 92 is inclined to a higher position than the contact portion of the engagement pin 82, and moreover, the lock link 81 itself is
As shown by the middle two-dot chain line, the support pin 81 is held so as to be displaceable in the axial direction, so the engagement pin 82 can easily overcome the release guide part 92 by the spring force of the spring 62B, and the left and right The loading brakes 50, 51 are immediately returned to the ejecting position (the ejecting position, which is substantially the same as the chucking position when the cassette 10 was inserted) by the spring force of the left and right return springs 62A, 62B.

That is, by simply pushing the door 48, the cassette 10, which has been locked in the loading position, can be released and immediately returned to the ejecting position where it can be taken out.

In this case, the drawing in and ejection of the cassette 10 are
Since the cassette holding claw 42 of the chuck link 43, which is supported by the slide member 28, is pressed and engaged with the recess 14 of the cassette with a predetermined spring force, the lock is released and the spring is attached as described above. Even when force is used to return the cassette 10 to the discharge position, the cassette retaining claw 42 can be reliably prevented from coming off the cassette recess 14 due to acceleration/deceleration motion or impact, and therefore the cassette 10 can be prevented from jumping out of the opening when the cassette is ejected. You can prevent it from falling.

In the above embodiments, the present invention was illustrated and explained as being applicable to a loading device for a floppy disk cassette, but the present invention is applicable to a drive device (mechanism) for a cassette such as a video tape cassette, a CD drive center, an audio cassette, etc. It can be used with various cassette loading devices as long as it is mounted inside the device.

In the "mechanism for pulling the cassette 10 into the mounting position by pushing and lowering the sliding member 28 guided forward and backward and up and down" in the above embodiment, the left and right loading plates that control the movement of the sliding member 28 from the fourth door Door links 53A and 53B connected between the door and the loading plate 50.51 were used as a force transmission path to the loading plate 50.51, as shown in FIG. 50.5
It is also possible to have a structure in which the signal is transmitted directly to the 1.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the sliding member guided forward and backward and up and down is pushed and lowered by the movement of closing the door, and the cassette chucked by the sliding member is pulled into the mounting position. Therefore, it is possible to obtain a cassette loading device that can be operated with a simple action of simply pushing the door, has no protruding part from the front panel, realizes a flant nose, and has an excellent design and is space-saving.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the main parts of the cassette loading device according to the present invention, with the left half in the ejection position and the right half in the loading position, and FIG. Fig. 3 is a left side view with another part removed as seen from line ■-■ in Fig. 1, Fig. 4 is a left side view with part removed
A partially removed right side view as seen from V-IV, FIG. 5 is a right side view with another portion removed as seen from line IV-IV in FIG.
FIG. 6 is a cross-sectional view taken from line Vl-VI in FIG. 1, FIG. 7 is a vertical cross-sectional view showing the cassette installed state, and FIG.
9 is a front view showing the cassette insertion opening of the cassette loading device in FIG. 1, and FIG. 10 is a mechanism for opening and closing the shutter of the cassette throat in FIG. Partial plan view showing operation, 11th
The figure is a partial front view of the lock and release mechanism of the cassette in Figure 1, and (A> and (B) in Figure 12 respectively
Partial sectional view taken along line A-A and line B-B in Figure 1, Part 1
FIG. 3 is a bottom view of the cassette used in the cassette loading device of FIG. 1, and FIG. 14 is a side view partially showing essential parts of another embodiment of the present invention. 10.--------One cassette, 14...-
・-Concave part (Chatu King), 17---------
−・−Shutter (cassette), 19・−−−−・−
−−−−・Slanted surface (prevents incorrect insertion), 27−・−−−−
---One cassette holder, 28--・-----One--
Slide member, 33A, 33B --------- Guide groove (for cassette holder), 37A, 37B
・－－－－－・－・－Guide groove (for sliding member), 4
2----------One cassette holding claw, 43-----
--------=Chuck link, 48・---1---
・-Door, 50, 51...----m-Loading plate, 60A, 60B, 61A, 61 B---
---・- Leaf spring (cassette holder), 67A, 6
? , B---------------------- Stopper (sliding member), 72・-1---------------・Engaging protrusion (
Shutter opening/closing), 73...-------cam groove (shack-- opening/closing), 80--------...
Lock and release mechanism, 81--
Lock link, 82. Agent: Yasushi Ooto, Patent AttorneyFigure 6Figure 14

Claims (1)

[Claims] (1) A cassette loading device characterized in that, by the movement of closing a door, a sliding member guided forward and backward and up and down is pushed in and lowered, and a cassette chucked by the sliding member is pulled into a mounting position.