JP2748422B2 - Door opening and closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The door opening and closing mechanism of the present invention will be described according to the following items.

A. Industrial application fields B. Summary of the invention C. Background art D. Problems to be solved by the invention E. Means to solve the problems F. Embodiment a. Disk storage case [FIGS. FIG. 6, FIG.
FIG. 7] b. Outline of recording / reproducing apparatus [FIGS. 1 to 4] c. Door [FIGS. 1 to 6] d. Door opening / closing mechanism [FIGS. 1, 3, 5 and 5 Fig. 6] d-1. Door opening means d-1-a. Door opening slider d-1-b. Door opening lever d-1-c. Operation d-2. Lock lever d-3. Lock release member d -4. Operation [Fig. 1] d-4-a. Initial state [Fig. 1 (A)] d-4-b. Movement of door to open position by mounting disk storage case [Fig. 1 (B) )] D-4-c. Movement of door to closed position by movement of case carrier and double lock [FIG. 1 (B), FIG.
(Fig. (C)) d-4-d. Release of lock on door etc. [1st.
Fig. (D)] d-4-e. Movement of the door to the open position by moving the case carrier [Figs. 1 (E) and 1 (F)] G. Effects of the invention (A. Industrial use) FIELD The present invention relates to a novel door opening and closing mechanism. Specifically, the recording medium has a case insertion opening for inserting and removing a recording medium storage case in which a recording medium is stored, and a door rotatably supported so as to open and close the case insertion opening. The case carrier is detachably mounted, and the case carrier is moved between an initial position facing the case insertion opening and a supply position for supplying the recording medium stored in the recording medium storage case to the recording / reproducing unit. With respect to the door opening and closing mechanism in the recording / reproducing apparatus provided, a lock member for locking the door at a closed position, that is, a position for closing the case insertion port, is provided, and the lock on the door by the lock member is such that the case carrier is moved from the initial position. The lock is released when the case carrier returns from the supply position to the initial position. And the lock is made double, so that another recording medium storage case is erroneously inserted even though the recording medium storage case is already mounted. And a lock member that can be operated without a special drive source, and the movement of the lock member is performed at the correct timing with the movement of the case carrier. It is intended to provide an opening and closing mechanism.

(B. Summary of the Invention) The door opening / closing mechanism of the present invention includes a case insertion opening for inserting and removing a recording medium storage case in which a recording medium is stored, and a rotatable support for opening and closing the case insertion opening. Supply to the recording / reproducing unit having the door provided, the recording medium storage case being removably mounted, the initial position facing the case insertion opening, and the recording medium stored in the recording medium storage case. A door opening / closing mechanism in a recording / reproducing apparatus having a case carrier moved between the door opening position and a door opening position interlocked with the movement of the door, that is, a position for opening the case insertion opening. A lock member for preventing movement is provided, and a lock release means is provided on the case carrier. When the case carrier is at the initial position, the lock on the door by the lock member is released, and the case carrier is unlocked. When the door is moved to the supply position, the door is locked by the lock member, and the door opening means is locked by the lock member to perform double lock. When the case carrier returns to the initial position, the double lock is performed. The recording medium storage case can be prevented from being accidentally inserted even though the recording medium storage case is already mounted, and the lock member can be specially locked. The operation can be performed irrespective of the drive source, and the operation is performed at the correct timing between the movement of the case carrier.

(C. Background Art) For example, a magnetic disk, a magneto-optical disk, a magnetic tape, or the like as a recording medium is usually stored and handled in an appropriate storage case. It is sometimes handled, and in such a case, it is mounted on the recording / reproducing apparatus while being stored in the storage case.

Therefore, in a recording / reproducing apparatus that uses a recording medium contained in such a storage case, usually, an initial position at which the recording medium storage case is detachably mounted and the recording medium stored in the recording medium storage case are stored. A case carrier is provided which moves between a supply position to be taken out of the case or to be supplied to the recording / reproducing unit as it is, and a case insertion opening for inserting and taking out a recording medium storage case is formed in the outer casing. Is at the initial position, it faces the case insertion opening, and the recording medium storage case is attached to and detached from the case carrier in this state.

Since this type of recording medium dislikes dust, dust, moisture, or the like, the case insertion port is generally provided with a door for opening and closing the door.
By pressing from the outside, it is moved to an open position, that is, a position to open the case insertion opening, is returned to the closed position when the case carrier moves to the supply position, and is further appropriately opened when returning to the initial position. Is configured to be moved to an open position.

(D. Problems to be Solved by the Invention) By the way, in a recording / reproducing apparatus having such a door, a case carrier, and the like, conventionally, there is no lock means for locking the door at its closed position. When the case carrier is at a position other than the initial position, the door can be moved to the open position, and accordingly,
Even if the storage medium storage case has already been installed, there is a risk that it may be erroneously handled that a different storage medium storage case may be inserted without noticing it. The recording medium storage case inserted into the device may be caught by something inside the device and become unable to be taken out, or may cause serious accidents such as damage to the recording medium storage case or the mechanism inside the device. There's a problem.

Therefore, in order to prevent such erroneous handling, a door lock mechanism having a drive source such as a motor or an electromagnetic plunger is provided, and the door is locked while the case carrier is at a position other than the initial position. May be locked to the closed position by a door lock mechanism, and the door may be unlocked when the case carrier returns to the initial position.

However, such a door lock mechanism requires a special drive source and various operation members, as well as a control means for setting an operation timing between locking and unlocking of the door and movement of the case carrier. However, there is a problem that the cost of the recording / reproducing apparatus is increased and the size of the recording / reproducing apparatus is increased, and furthermore, there is no guarantee that locking and unlocking are always performed at correct operation timing, so that movement of the case carrier is prevented. There is a problem that an operation failure such as the door being moved or the door not being moved to the open position is likely to occur.

(E. Means for Solving the Problems) In order to solve the above-described problems, the door opening and closing mechanism of the present invention is configured such that the recording medium storage case is detachably mounted, and the initial position facing the case insertion opening and the recording medium are changed. A case carrier moved between a supply position for supplying to the recording / reproducing unit,
The door has a pressed part and a locked part that interlocks with the movement of the door that moves between the open position that opens the case insertion opening and the closed position that closes the case insertion opening, and is attached so that the door closes the case insertion opening. A door opening means for moving the door to the open position side by being urged to press the pressed part, a door opening prevention part and a door opening means locking part, wherein the door opening prevention part faces the door and the door And a lock position where the door opening means lock portion is engaged with the locked portion of the door opening means to prevent the movement of the door opening means, and the movement of the door by the door opening prevention portion is prevented. A lock member that is moved between a lock release position for releasing the engagement of the blocking and door opening means locking portion with the door opening means and is held in the locking position when the case carrier is at the supply position; Supported by the case carrier, the case carrier is in the initial position It is provided with a lock release means having a pressing portion for pressing the pressed portion of the releasing member and the door opening means to move to the unlocked position the locking member to return to.

Therefore, according to the door opening / closing mechanism of the present invention, when the case carrier is at the initial position, the lock member is held at the unlocked position by the unlocking means, so that the locking of the door by the lock member and the movement of the door opening means are possible. When the blocking is released and the door can be moved to the open position, the recording medium storage case is mounted on the case carrier from this state, and when the case carrier is moved to the supply position, the door opening means by the unlocking means is released. The pressing and holding of the lock member at the unlocked position is released, the door is moved to the closed position, and the lock member is moved to the locked position to prevent movement of the door and movement of the door opening means. , Thereby double locking the door and unlocking means when the case carrier returns to the initial position. Moving the locking member into the unlocking position will be moved toward the door to move the door opening means together with releasing the lock on the door and door opening means according to the lock member to the open position.

Thus, according to the door opening and closing mechanism of the present invention, when the case carrier is at the supply position, the door is double locked in the closed position, and furthermore, such lock is moved from the initial position of the case carrier to the supply position. In addition, since the lock is released by moving the case carrier from the supply position to the initial position, even if the recording medium storage case is already mounted, The storage case can be prevented from being inserted, and the lock member can be operated without a special drive source, and the movement is performed at the correct timing between the movement of the case carrier. Will be.

(F. Embodiment) Hereinafter, details of the door opening and closing mechanism of the present invention will be described with reference to the illustrated embodiment.

In the illustrated embodiment, the door opening / closing mechanism of the present invention is applied to a door opening / closing mechanism in a recording / reproducing apparatus 1 using a disk storage case in which a plurality of recording medium disks are stored.

First, an example of the disk storage case will be described, and then the recording / reproducing apparatus 1 will be described.

(A. Disk storage case) [FIGS. 1 to 4 and 6
FIG. 7, FIG. 7] 2 is a disk storage case.

The disc storage case 2 includes a substantially box-shaped case main body 3 having one side opened for taking out a disk, and a lid 4 supported by the case main body 3 so as to open and close the opening 3a. The inside of the case body 3 has partition plates 5, 5,.
(See FIG. 7) four thin spaces 6 in the height direction,
(See FIG. 7), and one recording medium disk 7, for example, a magneto-optical disk, is housed in each of these four spaces 6, 6,. , Which push out a predetermined amount of the recording medium disk by being pushed in, are provided separately (only the leading end is shown in FIG. 7 in the drawing).

Incidentally, such a disk storage case 2 is inserted into the recording / reproducing apparatus 1 in a state where the lid 4 is at a position for closing the opening 3a as shown in FIG.

(B. Outline of Recording / Reproducing Apparatus) [FIGS. 1 to 4] Reference numeral 9 denotes an outer casing of the recording / reproducing apparatus 1, which is provided on the upper end of the front wall 10 in the left-right direction (to the upper left in FIG. The direction is leftward, the direction obliquely downward rightward is rightward, the direction obliquely downward leftward is the front side, and the direction obliquely upwardly right is the rear side. The case insertion opening 11 is formed, and the peripheral wall portion 12 of the case insertion opening 11 is formed such that its rear end slightly projects rearward from the inner surface of the front wall 10. .

Reference numeral 13 denotes a main frame provided inside the outer housing 9, and side plates 13a, 13a adjacent to the left and right side walls 9a, 9a of the outer housing 9.
Having.

Then, the first to fourth four recording / reproducing units 1 having substantially the same structure are provided in a substantially half space on the rear side inside the outer casing 9.
4 _1, 14 _2, 14 ₃ (for the third recording and reproducing unit 14 ₃ is omitted from the illustration.) And 14 ₄ are disposed at predetermined intervals in the vertical direction, the top First recording / reproducing unit 14
₁ is arranged at a height substantially opposite to the case insertion opening 11. These four recording / reproducing units 14 ₁ , 14 ₂ , 14 ₃ and 14 ₄
Mechanical chassis 15, 1 fixed to the main frame 13
, Which are vertically movably supported by the mechanical chassis 15, 15, ..., and fixed to the mechanical chassis 15, 15, ... , Driven by a motor (not shown), and clampers 18, 18, ... supported by elevating bodies 16, 16, ...
A head mechanism (not shown) movably supported within a certain range on the mechanical casings 15, 15,..., And a recording medium disk 7 stored in the disk storage case 2,
.. Are loaded into and lifted out of the elevating bodies 16, 16,.
.. Into the disk storage case 2 for unloading.
.. Are provided with various members or mechanisms necessary for performing recording and reproduction with respect to the recording medium disks 7, 7,.

Reference numeral 20 denotes a case carrier to which the disk storage case 2 is removably mounted, and a bottom plate 21 having a rectangular plate shape slightly larger than the disk storage case 2 and a case mounting portion 22 (third plate) provided on the bottom plate 21. (Shown only in the figure) and the side walls 23, 23 'raised from the left and right side edges of the bottom plate 21 and the substantially central portions of the upper edges of the side walls 23, 23' in the front-rear direction. And has a rectangular frame shape that is long in the left-right direction when viewed from the front-back direction. And
Such a case carrier 20 is movably supported by guides 25, 25 (shown only in FIG. 4) fixed to the inside of the outer casing 9 so as to extend in the vertical direction, and a carrier moving mechanism 26. The four recording / reproducing units 14 ₁ , 14 ₂ , 14
It is moved between a plurality of supply positions facing each other in the ₃ and 14 _4, facing the casing insertion hole 11 in a state coming to the supply position opposed to the first recording and reproducing unit 14 _1, the disk storage case Attachment to and removal from the second case carrier 20 are performed in this state. That is, the first recording / reproducing unit 14 ₁
Is the initial position where the movement of the case carrier 20 is started (hereinafter, this position is referred to as “initial position”).

Reference numeral 27 denotes a door for opening and closing the case insertion opening 11;
As shown in FIG. 1A, the case insertion opening 11 is closed in close contact with the rear end surface of the peripheral wall portion 12, and the case is inserted into a substantially horizontal posture as shown in FIG. 1E. The main frame 13 is rotatably supported by the main frame 13 so as to be moved between an open position where the mouth 11 is completely opened.

Reference numeral 28 denotes a door opening / closing mechanism (not shown in FIG. 4) for opening / closing the door 27. The door opening / closing mechanism 28 includes a lock lever 29 supported by the main frame 13 and a door opening mechanism. The case carrier 20 includes a lever 30, an opening slider 31, an unlocking member 32 supported by the case carrier 20, and the like.
Is in the initial position, the door 27 can freely move between the open position and the closed position, that is, the unlocked state.When the case carrier 20 is in a position other than the initial position, the door 27 Is locked to the closed position, and when the case carrier 20 returns to the initial position from that state, the lock on the door 27 is released, and the door 27 is moved to the open position side.

When the disc storage case 2 is inserted into the case insertion slot 11 from the state where the case carrier 20 is at the initial position, the disc storage case 2 is inserted into the case carrier 20 and also inserted to a predetermined insertion position. Locked by the case carrier 20 and the case carrier 20
When the cover 4 is moved to a position to open the opening 3a of the case body 3 by the cover opening mechanism 33 (see FIG. 4) provided in the four that are accommodated in the case 2 recording medium disc 7,7, or 7 of ... is supplied to the first recording and reproducing unit 14 _1, the case carrier 20 second
To the fourth to fourth supply positions, and the other recording medium disks 7, 7, 7 are moved to the second to fourth recording / reproducing units 14 ₂ , 14 _3.
And it is supplied to the 14 _4, and the eject disk housing case 2 is made, the recording and reproducing unit 14 _1, 14 _2, 1
4 _3, 14 ₄ recording medium disc 7,7 has been supplied to, -
Is returned into the disk storage case 2 and the case carrier 20 is returned to the initial position.

(C. Door) [FIGS. 1 to 6] The door 27 is long in the left and right direction when viewed from the front and rear, and has substantially the same size as the front wall of the peripheral wall 12 of the case insertion opening 11 when viewed from the front and rear. It is formed in a plate shape.

Numeral 34 denotes a rotation shaft of the door 27, which is fixed to the door 27 in a state of being located close to and parallel to the upper edge of the door 27.

Reference numerals 35 and 36 denote support plates fixed to the left and right side plates 13a, 13a of the main frame 13.The support plates 35 and 36 are provided at the front ends of the opposing surfaces of the side plates 13a, 13a, and the left support plate 35 is viewed from above. The door support piece 35a which is formed to have a substantially crank shape and forms the right end thereof is positioned so as to contact from the rear with the left end of the peripheral wall portion 12 of the case insertion opening 11 in a direction extending along the front-back direction, The right support plate 36 has a substantially rectangular shape that is long in the vertical direction when viewed from the side, and is cut and raised at a position near the upper end of the front end so that the door support piece 36a is oriented parallel to the door support piece 35a. These door support pieces 35a and 36a
Both ends of the rotation shaft 34 fixed to the door 27 are rotatably supported.

Reference numeral 37 denotes a door gear, which is formed by integrally forming a cylindrical boss portion 37a and a flat gear-shaped gear portion 37b so as to be coaxial with each other. Is fixed to the portion between the door support piece 36a and the door support piece 36a.

Numeral 38 denotes a torsion coil spring, the coil portion 38a of which is externally fitted to the boss portion 37a of the door gear 37, and one arm 38b of which is connected to the door 27.
And the other arm 38c is attached to the main frame 13
The door 27 is constantly urged to rotate clockwise in FIG. 1 by the resiliency of the spring 38.

(D. Door opening / closing mechanism) [FIGS. 1, 3, 5, and 6] (d-1. Door opening means) 39 is door opening means, and the door opening lever 30 and the door opening slider are provided. The door 27 is moved to the open position when pressed by the unlocking member 32 supported by the case carrier 20, and the door 27 is returned to the closed position when the pressing by the unlocking member 32 is released. It has a function.

(D-1-a. Door-Opening Slider) The door-opening slider 31 has a substantially rectangular main portion 40 that is long in the vertical direction when viewed from the side, and a plate that is elongated in the vertical direction when viewed from the front and rear, and The pressed piece 41 whose part except the upper and lower ends is continuous with the rear side edge of the main part 40, and the spring hooking piece 42 that projects substantially horizontally from the lower end of the front end of the main part 40 to the right are integrally formed. The main portion 40 has guided holes 43 long in the front-rear direction at both upper and lower ends thereof, and an engagement hole 44 long in the vertical direction at a position near the front edge. The pressed piece 41 has an intermediate portion 41a extending substantially straight in the vertical direction, and an upper end portion 41b (hereinafter, referred to as an “upper oblique”) extending substantially obliquely upward and forward from the upper end of the intermediate portion 41a. Further, a lower end portion 41c (hereinafter, referred to as a "lower oblique piece") is formed so as to extend substantially obliquely downward and forward from a lower end of the intermediate portion 41a.

45 and 45 are support shafts projecting horizontally from the right support plate 36 to the left, and 46 is a spring hook piece formed in a cut-and-raised shape from the support plate 36 to the left. The slider 31 can be moved within a predetermined range in the front-rear direction by the slidable engagement of the distal ends of the support shafts 45, 45 with the guided holes 43, 43, As shown in FIG. 1A, the retracted position where the front ends of the guided holes 43 abut on the support shafts 45, and the rear ends of the guided holes 43 shown in FIG. 1B are supported. It is supported so as to be able to move between the advancing position in contact with the shafts 45, 45, and is always in the retreat position by a tension spring 47 stretched between the spring hooking piece 42 and the spring hooking piece 46 of the support plate 36. The movement force toward the side is urged.

It should be noted that such an open door slider 31 has a main part 40 located at a substantially intermediate position between the support plate 36 and the right side wall 23 of the case carrier 20 and is covered with the cover, as can be clearly understood from FIG. Pressing piece
41 is arranged so that the left end thereof is located relatively close to the right side wall 23 of the case carrier 20, and as can be seen in FIG. The lower end of the lower oblique piece 41c is located at substantially the same height as the upper surface of the case carrier 20 at the initial position.

(D-1-b. Door Opening Lever) The door opening lever 30 is formed in a substantially V-shape when viewed from the side, and the upper portion of the front arm 48 is formed wider than the remaining portion, and the width is increased. A rack 50 is formed on the front edge of the portion, and the upper end of the rear arm 49 is formed in a U shape when viewed from substantially above, and support holes 49a, 49a coaxial with each other are formed in this portion. The rack 50 is formed so as to extend in an arc shape about an axis passing through the centers of the support holes 49a.

51 is an engagement pin projecting horizontally to the left from the connection between the two arms 48 and 49, and 52 is a position closer to the distal end side than an intermediate portion in the longitudinal direction of the front arm 48 The locked pin protrudes toward the left.

Reference numeral 53 denotes a support shaft projecting leftward from the right support plate 36.

The door-opening lever 30 is disposed between the door-opening slider 31 and the right support plate 36, and has support holes 49a, 49a.
The support shaft 53 is inserted through the support shaft 53 so as to be rotatably supported by the support shaft 53, and the tip of the engagement pin 51 is slidable in the engagement hole 44 formed in the main portion 40 of the door-opening slider 31. , And the rack 50 is meshed with the gear portion 37b of the door gear 37 from substantially behind.

Therefore, when the door-opening slider 31 moves, the engagement pin 51 is moved to the engagement hole 44 of the door-opening slider 31.
When the door 27 is rotated, the door 27 is rotated because the rack 50 is rotated substantially vertically by being pressed substantially in the front-rear direction by the side edge of the door 50. Is a door gear 37 in which the rack 50 rotates integrally with the door 27
As a result, the engagement pin 51 pushes the side edge of the engagement hole 44 of the door-opening slider 31 to move the door-opening slider 31.

(D-1-c. Operation) However, the door 27, the door-opening lever 30, and the door-opening slider 31 are provided so as to be interlocked with each other.
When the door 31 is at the retracted position, the upper end of the rack 50 is moved to the door gear 37, as shown in FIG.
(Hereinafter, referred to as a “closed position”), the door 27 is held at the closed position, and when the door-opening slider 31 is at the forward position, the door-opening lever is
As shown in FIG. 1 (E), the lower end of the rack 50 is held at a position where the lower end of the rack 50 meshes with the door gear 37 (hereinafter referred to as an “opening position”), and the door 27 is at the open position. Will be retained.

Therefore, when the door 27 moves to the open position, the door opening lever
When the door 30 moves to the open position and the open slider 31 moves to the forward position, and when the door 27 returns to the closed position, the open lever 30 moves to the closed position and the open slider 31 moves to the retracted position. When the door-opening slider 31 moves to the forward position, the door-opening lever 30 is moved to the door-opening position, and the door 27 is moved to the opening position. When the door-opening slider 31 returns to the retracted position, the door-opening lever 30 is moved. The door 27 is moved to the closing position and the door 27 is moved to the closing position.

Since the door 27, the door-opening lever 30, and the door-opening slider 31 have such an interlocking relationship, the tension spring
The resilience of 47 is the opening slider 31, the opening lever 30, the door gear
It works so as to constantly bias the door 27 through the 37 in the closing direction.

(D-2. Lock Lever) The lock lever 29 has a main portion 54 having a long and narrow plate shape in the left-right direction when viewed from above and both left and right end portions bent downward, and a main portion 54 and a right end portion 54a. An erecting piece 55 positioned to protrude upward from the rear is integrally formed. Main part
54 is slightly longer than the length of the door 27 in the left-right direction, and the support pins 56, 56 are horizontally protruded laterally from the rear portions of the left and right ends 54a, 54b. A substantially U-shaped notch 57 is formed at a position near the upper end of the side edge 55a, and the pressed pin 58 moves leftward from a position slightly lower than an intermediate position in the vertical direction of the rising piece 55. It protrudes horizontally to face.

The lock lever 29 has a lower end portion 27 of the door 27 in which a front edge 54c (hereinafter, referred to as an “opening prevention edge”) of a portion extending in the left-right direction of the main portion 54 is located at a closed position.
a, that is, with the support pins 56, 56
Is rotatably supported by the front ends of the side plates 13a, 13a of the main chassis 13.

59 and 59 are torsion springs, and their coil portions 59a and 5
9a is fitted onto the support pins 56, 56, and one arm 59
b, 59b are resiliently contacted from the front with spring abutments 60, 60 'formed on the left side plate 13a and the right side support plate 36 of the main frame 13, respectively, and the other end of the other arm 59c, 59c. Are in elastic contact with the lower edges of the left and right ends 54a, 54b of the main portion 54 of the lock lever 29 at positions forward of the positions corresponding to the support pins 56, 56.

Therefore, the lock lever 29 has the torsion spring 5
By the resilient forces 9 and 59, the rotating force in the clockwise direction in FIG. 1 is constantly urged.

When the case carrier 20 is at the initial position, the lock lever 29 is moved by the unlocking member 32 supported by the case carrier 20, as shown in FIG. 54c is held at a position slightly deviated from the rotation trajectory of the rotation end 27a of the door 27 (hereinafter, referred to as an "unlock position"), and the case carrier 20 is moved from the initial position to the second recording / reproduction. when substantially moved from the intermediate position to the lower between the position facing the section 14 _2, as shown by the solid line in FIG. 1 (C), the notch 57 formed in the rising piece 55 is in the closing position By engaging the locked pin 52 of the coming door-opening lever 30, the door-opening prevention edge 54c is opposed to the pivoting end 27a of the door 27 coming to the closed position from behind, and the opening position of the door 27 is opened. (Hereinafter referred to as a “lock position”).

In addition, as shown in FIG.
Is positioned close to the front arm 48 from the left side.

Also, a notch 57 formed in the rising piece 55 of the lock lever 29
Is engaged with the locked pin 52 of the door-opening lever 30, the upward movement of the locked pin 52 is prevented, so that the door-opening lever 30 is locked at the door-opening position.

(D-3. Unlocking Member) The unlocking member 32 has a substantially inverted L-shaped main portion 61 as viewed from the right side, and extends along the front side edge of the main portion 61 and extends vertically when viewed from the front and rear. An elongated plate-shaped pressing piece 62 is integrally formed. The pressing piece 62 is for pressing the pressed pin 58 of the lock lever 29 forward, and its upper end 62a is inclined so as to extend slightly upward and diagonally rearward, and A pressing pin 63 for pressing the pressed piece 41 of the door-opening slider 31 from the end portion is horizontally protruded rightward.

The lock release member 32 is fixed to the right side surface of the front end of the right side wall 23 of the case carrier 20 with screws 64, 64,..., And when the case carrier 20 is at the initial position, As shown in FIG. 1 (A), the portion of the pressing piece 62 near the lower end is the pressed pin of the lock lever 29.
58 is positioned so as to abut against the distal end portion of the lock lever 29 from behind to hold the lock lever 29 in the unlocked position.
In this state, the pressing pin 63 is
The upper oblique piece 41b of the pressed piece 41 is slightly opposed from above.

(D-4. Operation) [FIG. 1] The opening / closing of the door 27 by the door opening / closing mechanism 28 configured as described above and the locking of the door 27 are performed as follows.

(D-4-a. Initial state) [FIG. 1 (A)] FIG. 1 (A) shows the initial state of the door opening / closing mechanism 28, that is, the case carrier 20 is at the initial position and the case carrier 20 is in the initial state. Shows the state in which the disk storage case 2 is not mounted. In this state, the lock lever 29 is held at the unlocked position by the unlocking member 32, and the door opening slider 31 is not pressed forward, so that the tension spring 47, the door opening lever 30 is held at the door closing position, the door 27 is held at the closing position, and the notch 57 of the lock lever 29 is locked by the locked pin 52 of the door opening lever 30. Therefore, the lock by the lock lever 29 with respect to the door opening lever 30 is released.

Therefore, in this state, the door 27 can move to the open position.

(D-4-b. Movement of the door to the open position by mounting the disk storage case) [FIG. 1 (B)] When the disk storage case 2 is inserted into the case insertion slot 11 from the above initial state, the door 27 Is disk storage case 2
And is moved to the open position side. This movement is performed until the rotation end 27a rides on the upper surface of the disk storage case 2. In this state, the door 27
Is held by the disk storage case 2 at a position slightly closer to the closed position side than the open position, that is, at a position where it is inclined slightly downward.

And by moving the door 27 in this way,
The door opening lever 30 is moved to a position slightly before the door opening position, and the door opening slider 31 is moved to a position slightly before the advance position.

(D-4-c. Movement of Case Carrier to Closed Position of Door and Double Lock) [FIGS. 1 (B) and 1 (C)] Then, from this state, case carrier 20 is moved to the first position. position indicated by the solid line in FIG. (C) (this position substantially intermediate position between the initial position and the position facing the second recording and reproducing unit 14 ₂ (hereinafter, referred to as "press releasing position".) is )), The door 27 is moved to the closing position, the lock lever 29 comes to the locking position, and the door 27 is locked in the closing position, and the door opening lever 30 is locked in the closing position. become.

That is, when the case carrier 20 moves downward from the initial position, the disk storage case 2 also moves downward integrally therewith, so that the door 27 is biased via the torsion coil spring 38 and the door gear 37. With the rotation of the tension coil spring 47, the disk storage case 2 moves to the closing position so as to follow the lowering of the disk storage case 2, and the door opening slider 31 moves backward and the door opening lever 30 moves counterclockwise. You will be going. And case carrier
Shortly before the 20 reaches the pressing release position, the door 27 moves off the upper surface of the disk storage case 2 and moves to the closing position, and at the same time, the opening slider 31 moves to the retreating position and the opening lever 30 moves.
Are respectively moved to the door closing position, and immediately after this, the case carrier 20 reaches the pressing release position, and at this time, the lock lever 29, which has been in contact with the pressing piece 62 of the unlocking member 32 so as to press from behind, has been reached. Is released downward from the pressed pin 58, the release of the lock release member 32 against the lock lever 29 is released, the lock lever 29 is moved to the lock position, and the upper corner of the notch 57 returns to the closed position. The locking pin 52 of the door-opening lever 30 is engaged, and the door-opening prevention edge 54c is opposed from the rear to the rotating end 27a of the door 27 returning to the closed position.

Then, in this state, the door 27 is
As a result, the door opening lever 30 is also prevented from moving to the door opening position by the lock lever 29, so that the door 27 is double locked. The case carrier 20 is held as long as it does not move above the position shown in FIG.

In the movement described above, the door 27 is temporarily returned to the open position before reaching the closed position. That is, the case carrier 20 starts to move downward, and the position indicated by the two-dot chain line in FIG. 1B (this position is the position shown in FIG.
Are substantially the same as the positions shown in FIG. ), The upper oblique piece 41 of the pressed piece 41 of the door-opening slider 31 that has been moved backward with the movement of the door 27 to the closed position so far.
b and the pressing pin 63 of the unlocking member 32 moving downward
Abuts each other as shown by a two-dot chain line in FIG. 1 (B). When the case carrier 20 further moves downward from this state, the pressing pin 63 presses the upper oblique piece 41b substantially obliquely forward. However, as shown by a two-dot chain line in FIG. 1 (C), the user rides on the intermediate portion 41a of the pressed piece 41.
Thereby, the door opening slider 31 is moved to the forward position, whereby the door opening lever 30 is moved to the door opening position and the door 27 is moved to the opening position. That is, the door 27 that has started moving to the closed position side is once returned to the open position. The state is such that the case carrier 20 is positioned at the position indicated by the pressing pin 63 and the disk storage case 2 indicated by the dashed line in FIG. 1 (C) (this position is indicated by the solid line in FIG. 1 (F)). ).
That is, the pressing pin 63 is held as long as it is in contact with the intermediate portion 41a of the pressed piece 41 of the door-opening slider 31, and during this time, the door 27 is held at the open position. Then, while the case carrier 20 is lowered from the position shown by the alternate long and short dash line in FIG.
After contacting the lower oblique piece 41b of the pressed piece 41 of the 31, the oblique piece 41b
From below, and the upper surface of the disk storage case 2 descends to a level deviated below the rotation trajectory of the rotation end 27b of the door 27, and the door-opening slider 31 moves to the retracted position. And immediately after this, the case carrier 20 reaches the pressure release position, whereby
As described above, the pressing on the lock lever 29 is released, and the lock lever 29 is moved to the lock position.

(D-4-d. Release of lock on door and the like) [FIG. 1 (D)] The lock on the door 27 and the door opening lever 30 made as described above is performed when the case carrier 20 is slightly higher than the pressed release position. It will be released when it rises up.

That is, when the case carrier 20 moves toward the initial position, first, the upper end portion 62 of the pressing piece 62 of the unlocking member 32 is moved.
When a contacts the pressed pin 58 of the lock lever 29 and starts pressing the pressed pin 58 forward, and further, when the case carrier 20 reaches the position shown in FIG.
Rides on the portion other than the upper end portion 62a of the pressing piece 62, and is moved to the lock release position. As a result, the door opening prevention edge 54c of the lock lever 29 comes to a position lower than the movement trajectory of the pivoting end 27a of the door 27, and the notch 57 escapes forward from the locked pin 52 of the door opening lever 30. The prevention of the movement of the door 27 to the open position by the lever 29 and the prevention of the movement of the door opening lever 30 to the open position are released.

In this state, the pressing pin of the unlocking member 32
Reference numeral 63 denotes a pressed piece 41 of the door-opening slider 31 lightly contacting or approaching the lower oblique piece 41c from below, and the upper surface of the disk storage case 2 mounted on the case carrier 20 is a door.
27, a position slightly lower than the rotation path of the rotation end 27a, that is, the door 2
You are in a position where you will not interfere with the movement of 7.

(D-4-e. Movement of Case Carrier to Open Position by Movement of Case Carrier) [FIGS. 1 (E) and 1 (F)] Then, when case carrier 20 moves further upward from the above state. Since the pressing pin 63 of the unlocking member 32 presses the lower oblique piece 41c of the pressed piece 41 of the door-opening slider 31 substantially obliquely upward and forward, the door-opening slider 31 is moved forward and the pressing pin When the weight 63 rises to the intermediate portion 41a of the pressed piece 41, the door-opening slider 31 reaches the forward position.

Accordingly, the door opening lever 30 is moved to the door opening position, so that the door 27 is moved to the opening position.

This state is until the case carrier 20 reaches the position indicated by the pressing pin 63 and the disk storage case 2 shown by the two-dot chain line in FIG. 1 (E), that is, the pressing pin 63 is covered by the door-opening slider 31. When the case carrier 20 comes to this position, the upper surface of the disk storage case 2 is held at the open position when the case carrier 20 comes to this position.
It is located relatively close to 27 from below.

When the case carrier 20 moves further upward,
Since the pressing pin 63 of the unlocking member 32 comes off the intermediate portion 41a of the pressed piece 41 of the door-opening slider 31 and comes into contact with the upper oblique piece 41b and moves upward, the door-opening slider 31 is moved. As a result, the door opening lever 30 starts rotating toward the closed position and the door 27 starts rotating toward the closed position. Immediately thereafter, as shown in FIG. The rotating end 27a of the door 27 that has moved to the position side comes into contact with the upper surface of the disk storage case 2 that has risen, and from this state,
The door 27 is pushed upward by the disk storage case 2, and when the case carrier 20 reaches the initial position,
The door opening / closing mechanism 28 is in the state shown in FIG. 1 (B).

When the disk storage case 2 is taken out of the outer casing 9 from this state, the door 27 returns to the closing position, the opening lever 30 returns to the closing position, and the opening slider 31 returns to the retreating position. That is, the initial state shown in FIG.

(G. Effects of the Invention) As is apparent from the above description, the door opening / closing mechanism of the present invention includes a case insertion for inserting and removing a recording medium storage case storing one or more recording media. A recording medium storage case having a door and a recording medium storage case which is rotatably supported so as to move between an open position for opening the case insertion opening and a closed position for closing the case insertion opening, and a recording medium storage case. And a case carrier moved between an initial position facing the case insertion opening and a supply position for supplying the recording medium stored in the recording medium storage case to the recording and reproducing unit. An opening / closing mechanism, which is interlocked with the movement of the door and has a pressed portion and a locked portion, and the door is urged to close the case insertion opening and the pressed portion is pressed to open the door to the open position side. Move to A door opening means, a door opening prevention part and a door opening means locking part, wherein the door opening prevention part opposes the door to prevent the door from moving to the open position, and the door opening means locking part is the door opening means. A lock position for engaging the locked portion of the door to prevent the movement of the door opening means, and a lock release for preventing movement of the door by the door opening prevention part and releasing the engagement of the door opening means locking part with the door opening means. And a lock member that is moved between the lock position and is held in the lock position when the case carrier is at the supply position, and unlocks the lock member when the case carrier returns to the initial position when supported by the case carrier. And a lock release unit having a pressing unit for pressing the pressed portion of the door opening unit.

Therefore, according to the door opening / closing mechanism of the present invention, when the case carrier is at the initial position, the lock member is held at the unlocked position by the unlocking means, so that the locking of the door by the lock member and the movement of the door opening means are possible. When the blocking is released and the door can be moved to the open position, the recording medium storage case is mounted on the case carrier from this state, and when the case carrier is moved to the supply position, the door opening means by the unlocking means is released. The pressing and holding of the lock member at the unlocked position is released, the door is moved to the closed position, and the lock member is moved to the locked position to prevent movement of the door and movement of the door opening means. , Thereby double locking the door and unlocking means when the case carrier returns to the initial position. Moving the locking member into the unlocking position will be moved toward the door to move the door opening means together with releasing the lock on the door and door opening means according to the lock member to the open position.

Thus, according to the door opening and closing mechanism of the present invention, when the case carrier is at the supply position, the door is double locked in the closed position, and furthermore, such lock is moved from the initial position of the case carrier to the supply position. And the unlocking is performed according to the movement of the case carrier from the supply position to the initial position, so that another recording medium is erroneously irrespective of whether the recording medium storage case is already mounted. The storage case can be prevented from being inserted, and the lock member can be operated without a special drive source, and the movement is performed at the correct timing between the movement of the case carrier. Will be.

In addition, since there is no need to use a special drive mechanism for locking and unlocking the door and moving the door to the open position, there is no fear that the structure becomes complicated or the cost increases.

In the above-described embodiment, the door opening means is constituted by two members having different movements from each other, but this may be constituted by one member.

Further, in the above embodiment, when the case carrier returns to the initial position, the door is held at the open position by the recording medium storage case mounted on the case carrier, but such holding is performed by the door opening means. May be performed.

Further, in the above embodiment, the present invention is applied to the door opening / closing mechanism in a recording / reproducing apparatus using a disk storage case in which a plurality of recording medium disks are stored. Without being limited to the example, the present invention can be applied to a door opening / closing mechanism in various recording / reproducing devices using a recording medium storage case in which one or a plurality of various recording media are stored. The direction does not need to be vertical, and may be horizontal or any other direction.

[Brief description of the drawings]

The drawings show an embodiment in which the door opening / closing mechanism of the present invention is applied to a door opening / closing mechanism in a disk type recording / reproducing apparatus provided with a plurality of recording / reproducing units. FIG. FIG. 5 is a sectional view of a main part taken along the line II of FIG. 5 showing step by step F, FIG. 2 is a perspective view showing the appearance of a recording / reproducing apparatus and a disk storage case used for the same, and FIG. FIG. 4 is a sectional view taken along the line III-III of FIG. 4, and FIG.
FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1 (A), FIG. 6 is an exploded perspective view of a door opening / closing mechanism, and FIG. It is an expansion perspective view of a case. DESCRIPTION OF SYMBOLS 2... Recording medium storage case, 7... Recording medium, 11... Case insertion slot, 14 ₁ , 14 ₂ , 14 _4. …… door opening and closing mechanism, 29 …… locking member, 32 …… lock release means, 39 …… door opening means, 41 …… pressed part, 52 …… locked part, 54c …… door opening prevention part, 57… … Door opening means lock part, 62 …… lock release part, 63 …… pressing part

Claims (1)

(57) [Claims] A case insertion opening for inserting and removing a recording medium storage case accommodating one or a plurality of recording media, an opening position for opening the case insertion opening, and closing the case insertion opening. A door rotatably supported so as to move between the closed position and the recording medium storage case are detachably inserted, and are stored in the initial position facing the case insertion opening and the recording medium storage case. Opening and closing mechanism in a recording / reproducing apparatus including a case carrier moved between a supply position for supplying a recording medium to the recording / reproducing section, and the pressed section and the locked section interlocked with the movement of the door. A door opening means for urging the door to close the case insertion opening and moving the door to the open position side when the pressed part is pressed, a door opening prevention part and a door opening means lock part. Door opening prevention part A lock position where the door is prevented from moving to an open position in opposition to the door, and wherein the door opening means lock portion engages with a locked portion of the door opening means to prevent movement of the door opening means and the door opening prevention The door is moved between a lock release position for preventing movement of the door by the portion and releasing the engagement of the door opening means lock with the door opening means, and is held at the lock position when the case carrier is at the supply position. A lock member, a lock release portion supported by the case carrier and moving the lock member to the lock release position when the case carrier returns to the initial position, and a pressing portion pressing the pressed portion of the door opening means. Door opening and closing mechanism characterized by providing lock release means