JP3397869B2 - Recording / reproducing device equipped with cartridge misinsertion prevention mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus provided with a cartridge erroneous insertion preventing mechanism for preventing erroneous insertion of a cartridge containing a recordable or readable disc. is there. 2. Description of the Related Art A cartridge shown in FIGS. 12A and 12B is used as a cartridge. This is used for a so-called mini disk which is a magneto-optical recording disk. The cartridge (6) is rectangular and has a recordable / reproducible disc (60).
Is stored. On one side of the cartridge (6),
An insertion mark (62) is drawn. One end of a pair of parallel sides of the cartridge (6) has slit grooves (63) and (64), respectively.
Are formed, and the slit grooves (63) and (64) are provided from the center in the thickness direction of the cartridge toward the surface with the insertion mark (62). Distance L between both sides where slit grooves (63) and (64) are opened
Is formed slightly larger than the distance H between the other pair of sides. Specifically, the distance L is 72 mm and the distance H is 68 mm. A shutter (61) is slidably provided on the side of one of the slit grooves (63) in contact with the surface of the cartridge (6). The hole (6
6) has been established. If the shutter (61) slides,
The disc (60) stored in the cartridge (6) is exposed. In order to insert the cartridge (6) into the apparatus main body for recording / reproducing, if the cartridge is not inserted in a correct posture, not only recording / reproducing will not be performed smoothly but also a cause for failure of the apparatus. Such an erroneous insertion prevention mechanism has a structure shown in FIG.
There is one shown in (b). In this mechanism, a housing (91) provided at a front end of an apparatus main body (not shown) includes a cartridge (91).
An insertion hole (9) into which (6) is inserted is opened. Insertion hole
(9) has a vertical length substantially equal to the side length L of the cartridge (6), and the push switches (100) (100) ( 101) is provided. The two push switches (100) and (101) are mounted so as to be offset from the center of the width of the insertion hole (9). (6
3) Both slit grooves (63) are out of the passage of (64)
It does not fit into (64), but is pushed into contact with the end of the cartridge (6). A light emitting sensor (103) and a light receiving sensor (104) are attached to the housing (91) between the push switches (100) and (101). As shown in FIG. 14 (b), when the cartridge (6) is inserted in a normal state with the shutter (61) upward, the light of the light emission sensor (103) is blocked by the cartridge (6). Then, the light does not reach the light receiving sensor (104), and the presence of the cartridge (6) is detected. At this time, the upper and lower ends of the cartridge (6) push the operation pieces (102) of the push switches (100) and (101), and both switches (100) and (101) are turned on. Both switches
Based on the ON signals of (100) and (101) and the output of the light receiving sensor (104), it is detected that the cartridge (6) is inserted at a proper position. [0006] As shown in FIG.
When the cartridge is inserted upside down from the normal state, the slit grooves (63) and (64) are opened off the center of the thickness of the cartridge (6).
The operation piece (102) of (101) fits in the slit grooves (63) and (64), and both switches (100) and (101) remain OFF. Therefore, even if the two sensors (103) and (104) detect the insertion of the cartridge (6), it is detected that the cartridge (6) is incorrectly inserted. As shown in FIG. 16, when the cartridge (6) is rotated by 90 ° from the normal state and inserted, the cartridge (6) has a margin in the insertion hole (9) due to the dimensional relationship of the cartridge (6). Hold and insert. Therefore, the end of the cartridge (6) is
Just press one of (100) or (101) and both switches (1
Since (00) and (101) cannot be pressed at the same time, it is detected that the insertion is erroneous. Further, as shown in FIG. 17, when the cartridge (6) is inserted by being rotated by 180 ° from the normal position, both switches (100) and (101) are pushed by the ends of the cartridge (6). However, when passing through the cartridge (6), the operation piece (102) of one of the push switches (101) fits into the hole (66) of the shutter (61) and is once turned off. Therefore, the erroneous insertion is detected. As described above, when erroneous insertion is detected, for example, the light receiving sensor (104) and the two push switches (100) (1
An incorrect insertion is indicated by a pilot lamp, buzzer, or the like connected to 01). In the erroneous insertion prevention mechanism, the pair of sensors (103) and (104) and the two push switches (10
The use of (0) and (101) complicates the entire configuration for controlling these. SUMMARY OF THE INVENTION An object of the present invention is to prevent a cartridge from being erroneously inserted by a simple mechanical mechanism. A free end of the housing (91) having an insertion hole (9) is inserted into a passageway at an end of the cartridge (6) in the insertion hole (9). One end of a first rotating body (2) that protrudes and retracts and abuts a lower corner of the cartridge (6) is pivotally supported, and a passageway at the other end of the cartridge (6) has one slit groove ( 63) is inserted into the insertion hole (9), and interlocks with the rotation of the first rotating body (2).
Second rotating body from which the protruding piece (3a) escapes from the slit groove (63)
(3) is pivoted. In the vicinity of the first rotating body (2), at a position within the insertion hole (9) in the cartridge (6) discharge direction from the free end of the first rotating body (2) abutting on the cartridge (6). A third rotating body having a projecting piece (4a) protruding and retractable into the passage of the other slit groove (64) of the cartridge (6).
One end of (4) is pivotally supported to restrict the rotation of the third rotating body (4) in the cartridge passing permissible direction and wait for the insertion of the cartridge, and interlock with the rotation of the first rotating body (2). A restriction mechanism for releasing the restriction is provided. The cartridge (6) is placed in a proper posture and the insertion hole (9) is inserted.
When the cartridge (6) is inserted into the
(2) is rotated, and the second rotating body (3) is also rotated in conjunction with it, so that the protruding piece (3a) escapes from the slit groove (63) and the cartridge is rotated.
Allow the passage of (6). The restricting mechanism allows the third rotating body (4) to rotate in the direction allowing passage of the cartridge (6). cartridge
If the (6) is incorrectly inserted, the third rotating body (4) whose rotation is restricted by the restricting mechanism, or the second rotating body (3) that keeps the stopped state because the first rotating body (2) does not rotate. Prevents insertion. According to the present invention, the cartridge inserted in a proper state by the rotating operation of the third rotating body (4) or the second rotating body (3).
Only (6) is allowed to insert. Therefore, erroneous insertion of the cartridge (6) can be prevented by a simple mechanism, and the configuration is not complicated as in the related art. An embodiment of the present invention will be described below in detail with reference to the drawings. In this embodiment, a recording / reproducing apparatus of an automatic changer type for the cartridge (6) will be described. As shown in FIG. 13, a housing (91) is provided at the rear end of the apparatus main body (1), and an insertion hole (9) is formed in the housing (91) for inserting the cartridge (6) upright. Have been. Behind the housing (91), a mechanism (18) including a cylindrical magazine (15) capable of storing a plurality of cartridges (6) in a radial direction and a pickup (16) and a recording head (17) is provided. ) Is provided. Magazine (15)
Is provided so as to be rotatable around a central portion, and a pair of sandwiching rollers (11) and (11) are provided between the magazine (15) and the housing (91). Cartridge (6) through insertion hole (9)
Is pulled in by the holding rollers (11) and (11), and the magazine (1
Stored in 5). Further from the magazine (15) to the mechanism (18)
To be recorded and played back. As shown in FIG. 1, the housing (91) is composed of a pair of holding plates (7) and (8). Both holding plates (7) (8)
Are vertically long rectangles and have the same vertical length. A concave surface (80) is formed at the lower end of the outer surface of the holding plate (8), and the projections (83) and (84) projecting inward from the upper end and the lower end of the holding plate (8) are opposed to each other. In contact with the plate (7),
It is fixed with screws (85) and (85). In this state, as shown in FIG. 3, the insertion hole (9) is formed between the holding plates (7) and (8). The vertical length of the insertion hole (9) is
The distance (L) between the pair of sides (6) is substantially equal to and slightly larger than the thickness of the cartridge (6). As shown in FIG. 1, the cartridge (6) is set up so that the shutter (61) faces upward, and the surface on which the insertion mark (62) is drawn is a holding plate.
It is inserted into the insertion hole (9) while facing the (8). (Overall Configuration) On the inner surface of the holding plate (7), two shafts (70) and (71) project vertically below and below the cartridge insertion position. One end of the first rotating body (2) is fitted to the upper shaft (70), and the lower shaft (71) penetrates the first rotating body (2) with a margin. From the upper end of the first rotating body (2),
(2a) protrudes so as to come into contact with the outer peripheral surface of the cartridge (6), and from the lower end, the push-in piece (20) protrudes downward beyond the lower ends of both holding plates (7) and (8). A projection (21) projects from above the base end of the riser (20) toward the holding plate (8). At the upper end of the holding plate (7), a second rotating body (3)
Is pivotally supported at the center thereof, and the projecting piece (3a) projects downward from the free end of the second rotating body (3) so as to fit into the slit groove (63) of the cartridge (6). . Second rotating body (3)
The other free end and the first rotating body (2) lock the ends of the connecting rod (90), respectively. Therefore, the second rotating body (2) rotates in the same direction in conjunction with the rotation of the first rotating body (2) via the connecting rod (90). One end of a third rotating body (4) is fitted coaxially with the first rotating body (2) between the first rotating body (2) and the holding plate (8). From the upper edge of the third rotating body (4), a projecting piece (4a)
Project upward, and the protruding piece (4a) can be fitted into the slit groove (64) of the cartridge (6). The thickness of the protruding piece (4a) is provided substantially equal to the groove width of the slit groove (64). Projection
(4a) has a tip height substantially equal to the tip height of the projecting piece (2a) of the first rotating body (2), and is located closer to the cartridge discharge side than the projecting piece (2a). As shown in FIG. 4, the two projecting pieces (2a) and (4a)
The horizontal distance L1 between them is shorter than the length L2 of the slit (64). An engagement piece (40) projects from the free end of the third rotating body (4) toward the holding plate (8). Engagement piece (40) is holding plate
Penetrate the concave surface (80) of (8) with a margin up, down, front and back.
A projecting piece (41) projects downward from the lower end of the third rotating body (4). The lower end of the projecting piece (41) is the projection (21) of the first rotating body (2).
And does not hinder the rotation of the first rotating body (2). As shown in FIG. 1, a slide plate (5) is provided between the third rotating body (4) and the holding plate (8). The slide plate (5) has two elongated holes (50) (5) extending in the front-rear direction.
0) is established, and as shown in FIG. 4, the long holes (50) and (50) are fitted in the shafts (71) and (72), respectively, and are slidable back and forth. The slide plate (5) is provided with a vertically extending vertical hole (53), the projection (21) of the first rotating body (2) is fitted in the vertical hole (53), and the slide plate (5) is It slides according to the rotation of the first rotating body (2). At the upper end of the slide plate (5), a third rotating body (4)
A notch (51) into which the engaging piece (40) is fitted with a margin is provided. From the front of the lower end of the slide plate (5),
A spring hook (52) projects toward (8), and the spring hook
(52) penetrates a long hole (86) provided in the concave surface (80) of the holding plate (8) with a margin in the front and rear. From the front end of the concave surface (80) of the holding plate (8),
(81) protrudes outward, and a torsion spring (82) is fitted to the shaft (81). As shown in FIG. 4, one end of the torsion spring (82) is hooked on the spring hook (52) of the slide plate (5) to urge the slide plate (5) forward. The slide plate (5) is concave
(80) Sliding is restricted in contact with the stopper at the front end. The other end of the torsion spring (82) is engaged with the engaging piece (40) of the third rotating body (4) that penetrates through the concave surface (80) and protrudes outward, and the third rotating body
(4) is urged clockwise. The protruding piece (41) is pressed against the shaft (71), and the rotation of the third rotating body (4) is restricted. Third rotating body
(4) The counterclockwise rotation is regulated by the engagement piece (40) being behind the notch (51) of the slide plate (5) and abutting on the upper edge of the slide plate (5). ing. A passage detecting switch (10) is provided on the counterclockwise rotating side of the riser piece (20) of the first rotating body (2). As shown in FIG. 2 and FIG. 5, the pair of nipping rollers (11) and (11) are connected to a motor (12) via an open belt (13) and a cross belt (14), respectively. The passage detection switch (10) is electrically connected to the motor (12). When the passage detection switch (10) is turned on, the motor (12) rotates, and each of the holding rollers (11) and (11) is connected to the cartridge (6). ). (Insertion of Cartridge) When the cartridge (6) is inserted into the insertion hole (9) in a proper posture, as shown in FIG. 5, the projecting piece (4a) of the third rotating body (4) becomes the cartridge (6). The protruding piece (3a) of the second rotating body (3) fits into the slit groove (63) of the upper part of the cartridge (6) in the lower slit groove (64), respectively, so that the cartridge (6) can freely advance. I forgive. At the position of the forward end of the cartridge (6), the projecting piece of the first rotating body (2)
(2a) is in contact with the outer peripheral surface of the cartridge (6). The first rotating body (2) is pushed down by the cartridge (6) and rotates about the shaft (70) as shown in FIG. Due to the rotation of the first rotating body (2), the second rotating body (3) rotates about the pivotal support via the connecting rod (90), and the protruding piece (3a) escapes from the slit groove (63). I do. However, the third rotating body (4) does not rotate because the protruding piece (4a) is fitted in the slit groove (64). The counterclockwise rotation of the first rotating body (2) causes the riser piece (20) to activate the passage detection switch (10),
The passage detection switch (10) is turned on. The motor (12) rotates, and the holding rollers (11) and (11) rotate in a direction to pull in the cartridge (6). Also, by the rotation of the first rotating body (2),
The slide plate (5) slides rearward through the projection (21) against the torsion spring (82). The engagement piece (40) fits into the notch (51) of the slide plate (5), and the third rotating body (4) is allowed to rotate counterclockwise. When the cartridge (6) is further pushed into the insertion hole (9), as shown in FIG.
(4a) comes into contact with the rear end of the slide groove (64), and the third rotating body
(4) rotates counterclockwise against the torsion spring (82).
Therefore, the cartridge (6) moves forward without being hindered by the third rotating body (4), and when the end is nipped by the nipping rollers (11) and (11), the cartridge (6) is pulled in by the nipping rollers (11) and (11). . Thus, the cartridge (6) can pass through the insertion hole (9). After the cartridge (6) has passed through the insertion hole (9), the slide plate (5) is pushed forward by the torsion spring (82) as shown in FIG. The rotating body (2) returns to the standby state. The passage detection switch (10) returns to the original state. The third rotating body (4) is also rotated clockwise by the torsion spring (82) and returns to the standby state. (Erroneous Insertion 1) The surface of the cartridge (6) with the insertion mark (62) attached thereto is opposed to the holding plate (8).
This shows a state where the cartridge (6) cannot pass through the insertion hole (9) when the cartridge (6) is erroneously inserted into the insertion hole (9). FIG. 8 shows the shutter
The case where (61) is inserted upside down is shown. cartridge
The cartridge (6) is inserted with the side where the slit grooves (63) and (64) are not formed facing the insertion hole (9), and the corner of the cartridge (6) is inserted into the projecting piece (3) of the third rotating body (4). This corresponds to 4a). In this case the third
Since the engaging piece (40) of the rotating body (4) comes into contact with the upper end edge of the slide plate (5) and the rotation in the counterclockwise direction is restricted, the cartridge (6) is moved to the third rotating body (4). ) Will prevent you from moving forward. FIG. 9 shows the shutter (6).
1) shows a case in which 1) is erroneously inserted backward. As described above, the distance H between the two sides of the cartridge 6 is smaller than the vertical length L of the insertion hole 9, so that the cartridge 6 has a margin vertically. Insertion hole
Inserted in (9). Accordingly, the corners of the cartridge (6) are formed by the projecting piece (4a) of the third rotating body (4) and the projecting piece of the first rotating body (2).
It is possible to move forward beyond (2a). But the cartridge
(6) Even if the side surface of the upper slit groove (64) comes into contact with the projecting piece (3a) of the second rotating body (3), the first rotating body (2) is
Since it does not come into contact with (6) and does not rotate, the second rotating body (3) also does not rotate. For this reason, the cartridge (6) includes the second rotating body (3).
Is prevented from moving forward by the projecting piece (3a). The shutter
When the (61) is directed forward, the forward movement is similarly prevented by the protruding piece (3a) of the second rotating body (3) (see FIG. 10). (Erroneous Insertion 3) The state where the surface of the cartridge (6) with the insertion mark (62) is opposed to the holding plate (7), that is, the surface of the cartridge (6) is turned upside down from the normal mounting state. FIG. 11 shows a case in which this is done. When the cartridge (6) is inserted with the shutter (61) down, as described above, the slit groove (63)
Is opened at a position slightly deviated from the center of the thickness, the slit groove (63) does not fit into the protrusion (4a) of the third rotating body (4), and the corner of the cartridge (6) is This corresponds to (4a). Since the engagement piece (40) is in contact with the upper edge of the slide plate (5), the third rotating body (4) is restricted from rotating counterclockwise,
The cartridge (6) is prevented from advancing. When the cartridge (6) is inserted into the insertion hole (9) with the shutter (61) facing forward and backward with the insertion mark (62) facing the holding plate (7), As described above, the advance of course is restricted by the second rotating body (3) and the third rotating body (4), respectively. The third rotating body (4) or the second
Due to the rotation of the rotating body (3), only the cartridge (6) inserted in the normal posture is allowed to be inserted. Therefore, erroneous insertion of the cartridge (6) can be prevented by a simple mechanism, and the configuration is not complicated as in the related art. When the cartridge (6) is taken out of the apparatus main body (1), a path reverse to the above operation is followed. In the standby state shown in FIG. 5, the rear end of the cartridge (6) comes into contact with the protruding piece (2a) of the first rotating body (2). First rotating body (2a)
And the second rotating body (3) rotates to allow the passage of the cartridge (6). By the rotation of the first rotating body (2), the slide plate
(5) also slides backward, and the third rotating body (4) can rotate counterclockwise. The rear end of the cartridge (6) rotates the third rotating body (4) so that the cartridge (6) can pass through. The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims. In the present embodiment, the recording / reproducing apparatus of the autochanger type in which the cartridge (6) is set up and inserted has been described.
It goes without saying that a portable recording / reproducing apparatus for recording / reproducing can also be used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a cartridge erroneous insertion prevention mechanism. FIG. 2 is a plan view of the same. FIG. 3 is a front view of a state where both holding plates are fitted together. FIG. 4 is an enlarged side view of the vicinity of a third rotating body. FIG. 5 is a diagram illustrating a standby state of the cartridge erroneous insertion prevention mechanism. FIG. 6 is a view showing a state where a cartridge is inserted into the cartridge erroneous insertion prevention mechanism. FIG. 7 is a diagram illustrating a state in which the cartridge passes through a cartridge erroneous insertion prevention mechanism. FIG. 8 is a diagram illustrating a state where a cartridge is erroneously inserted. FIG. 9 is a diagram showing another erroneous insertion state. FIG. 10 is a diagram showing another erroneous insertion state. FIG. 11 is a view showing still another erroneous insertion state. 12A is a perspective view of a cartridge, and FIG. 12B is a side view of the cartridge. FIG. 13 is a side view showing the entire apparatus main body. FIG. 14A is a front view of a conventional erroneous insertion prevention mechanism, and FIG. 14B is a side view of the same. FIG. 15 is a side view showing a state where a cartridge is erroneously inserted into a conventional erroneous insertion prevention mechanism. FIG. 16 is a diagram showing an erroneous insertion state of the above. FIG. 17 is a diagram showing still another erroneous insertion state. [Description of Signs] (2) First rotating body (3) Second rotating body (4) Third rotating body (5) Slide plate (6) Cartridge (7) Holding plate (8) Holding plate (9) Insertion hole

Claims (1)

(57) [Claims 1] A recordable or reproducible disk (60) is housed, and slit grooves (63) (64) are respectively arranged at one end of a pair of side sides toward one surface. In a recording / reproducing apparatus provided with a cartridge erroneous insertion preventing mechanism for preventing erroneous insertion of the opened cartridge (6), the cartridge (6) is disposed at a cartridge insertion position of the recording / reproducing apparatus, and the cartridge (6) is provided with both slit grooves ( A housing (91) provided with an insertion hole (9) through which the passages 63 and 64 can pass in the insertion direction, and one end pivotally supported by the housing (91) and a free end provided in the insertion hole.
(9) A first rotating body that protrudes into and out of the passageway at the end of the cartridge (6) and contacts the lower corner of the cartridge (6).
(2), a projection (3a) pivotally supported by the housing (91) and fitted into one of the slit grooves (63) projects into the insertion hole (9), and passes through the cartridge of the first rotating body (2). In conjunction with the rotation in the allowable direction,
Second rotating body from which the protruding piece (3a) escapes from the slit groove (63)
(3) a first rotating body (2) having one end pivotally supported by the housing (91) near the first rotating body (2) and abutting on the cartridge (6);
Insertion hole in the cartridge (6) discharge direction than the free end of the
At the position in (9), the slit groove (64) of the cartridge (6)
Having a protruding piece (4a) protruding into and out of the passageway of
The rotating body (4) and the third rotating body (4) restrict the rotation of the third rotating body (4) in the cartridge passage permitting direction when the cartridge is in the standby state.
(2) When the cartridge (6) is rotated in the cartridge passing permissible direction, the restriction mechanism is released in conjunction with the rotation, and only when the cartridge (6) is inserted in a normal posture,
The first rotating body (2) is rotated by contact with the end of the cartridge (6), and the second rotating body (3) and the third rotating body (4) are allowed to rotate and pass through the cartridge (6). A recording / reproducing apparatus provided with a cartridge erroneous insertion preventing mechanism.