JPH0650841Y2 - Cassette loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a cassette loading device used in a digital audio tape recorder, etc., and it requires only a small amount of manual pushing force during loading operation, as well as automatic loading and front lid. Therefore, the present invention proposes a cassette loading device which is compact and has excellent operability.

2. Description of the Related Art The above-mentioned cassette has a structure in which the bottom moving plate is moved backward with respect to the cassette body, and loading is completed with the front lid open. Since the load is added, the loading device tends to be large, and the gripping force by the hand during the loading operation is small, which makes the operation inconvenient.

Problems to be Solved by the Invention This invention solves the conventional problems that the loading amount becomes long and the apparatus is difficult to be made compact, and that the holding margin for pushing and taking out is insufficient. It is a thing.

Means for Solving the Problems The structure of the present invention for solving the above problems is a loading device for a cassette 6 which is mounted with the bottom moving plate 8 moved backward and the front lid 15 opened. A cassette container 5 that holds the cassette 6 by locking the moving plate 8 and a pair of loading grooves (A) that are provided upright on the apparatus body 1 and that guide the cassette container 5 in the front-rear direction and the up-down direction. Container guide plates 2, 2 and grip shaft holding means (H) provided on the left and right side plates 20, 20 of the cassette container 5 for loosely inserting the grip shaft 29 that elastically engages with the grip portion 27 of the cassette body 7. Energize the loading motor 53 and the lowering operation section 40 for lowering the grip shaft holding means (H) so as to elastically engage the grip shaft 29 by slightly pushing the cassette 6. An interlocking body 42 having a switch closing portion 41, and a loading arm 57 for rotating the cassette container 5 so as to move in the front and rear grooves 3a, 3b and the vertical grooves 4a, 4b, 4c of the loading groove (A). During the loading operation in the front and rear grooves 3a and 3b, the loading roller 51 that rolls on the cassette upper surface 52 of the cassette body 7 to move the cassette body 7 with respect to the moving plate 8 and the rotation of the loading motor 53 are loaded. A transmission mechanism 58 that transmits to the arm 57 and the loading roller 51, and is provided to open the front lid 15 of the cassette 6 in the vicinity of the end of the movement of the cassette container 5 to the lower part of the vertical groove in conjunction with the loading operation. And a front lid opening / closing mechanism 59, and the transmission mechanism 58 has a larger movement amount by the loading roller 51 than a movement amount by the loading arm 57. And a cassette loading device configured to.

Action When the cassette 6 is pushed in by a very small amount, the grip shaft holding means (H) is moved downward by the downward operation portion 40 of the interlocking body 42, and the grip shaft 29 is elastically engaged with the grip portion 27 of the cassette body 7. At the same time, the loading motor 53 is rotated by the operation of the switch input unit 41 pressing the loading switch 82, and the cassette container 5 is loaded by the rotation operation of the loading arm 57 (A).
While moving along the front and rear grooves 3a, 3b, the loading roller 51 moves the cassette body 7 more largely than the moving plate 8 of the cassette 6 by the operation of the conduction mechanism 58, so that the moving plate 8 moves to the cassette body 7. As a result, it gradually moves backward, and the upper and lower grooves 4a, 4b of the loading groove (A),
When the cassette container 5 is guided downward by 4c,
Since the loading roller 51 is separated from the cassette upper surface portion 52, the backward movement of the moving plate 8 is completed, and the front cover opening / closing mechanism 59, which operates in conjunction with the loading operation, completes the operation of moving the cassette 6 to the lower part of the vertical groove. The front lid 15 is opened and the loading operation is completed.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

The perspective view of the whole is shown in FIG. 1, and the perspective view of each main member is shown in FIGS. 2 to 5, respectively. A pair of container guide plates 2, 2 are erected on the apparatus main body 1, and the front and rear grooves 3a are provided. , 3b and upper and lower grooves 4a, 4b, 4c
2 is provided in the container guide plate 2, and the cassette container 5 illustrated in FIG.
It is moved along the loading groove (A).

The cassette 6 used is used for a digital audio tape recorder or the like as shown in the front perspective view in FIG. 11 and the rear perspective view in FIG. 12, respectively, and the moving plate 8 is moved to the bottom of the cassette body 7. It is provided as possible, and when it is in the closed state shown in the same figure, the locking claws 9, 9 are pulled in to lock the holes 10,
When the moving plate 8 is moved in the direction of arrow B after removing from 10, the hub hole 11 of the moving plate 8 is in the open position matching the hub hole 12 of the cassette body 7, and the locking claw 9 is in the other locking hole 13. Front lid 15 which is locked to the magnetic tape 14 and normally covers the magnetic tape 14.
Is pushed open and rotated about the pin 16 as a fulcrum as shown in FIGS. 13 and 14.

The cassette container 5 has a floor plate 19 on which a projecting piece 18 that can fit into the groove 17 on which the movable plate 8 is placed is projected, left and right side plates 20, 20, 20 standing on the left and right sides of the floor plate 19, and left and right side plates 20. , 20 and the connecting rods 21 and the presser springs 22 and 22 on the top, and the upper and lower parts which are projected to the container guide plate 2 side of the left and right side plates 20 and can be engaged with the upper and lower grooves 3a and the upper and lower grooves 4a of the loading groove (A) The guide pin 24, the lower front and rear grooves 3b, the upper and lower grooves 4b, the front and rear grooves 3b,
Lower guide pins 25, 26 that can be engaged with each other are provided in the upper and lower grooves 4c, and the left and right guide plates 23, 23 sandwich the container guide plate 2 respectively, and the heads of the guide pins 24, 25, 26 are inserted. Is fixed to the side plate 20 and is attached to the front and rear grooves 3a, 4a and the upper and lower grooves.
It is provided so as to move together with the cassette container 5 in 3b, 4b, and 4c.

A grip shaft 29 that can be elastically engaged with the groove-shaped grip portion 27 of the cassette body 7 by the spring 28 during the loading operation.
Is loosely fitted in the groove 32 of the grip holding plates 31, 31 pivotally supported by the pins 30 on the left and right side plates 20, 20 as shown in FIG. As shown in the side view of FIG. 5 and FIG.
A grip shaft elevating plate 35 provided with an inclined plate 33 and a U-shaped groove 34 that descends and descends with respect to the horizontal plane is provided with a pin 36 and a long groove that is loosely fitted into the pin
It can be moved up and down slightly by the action of 37 and is locked by a torque spring (not shown) so that it is normally in the down position.

As shown in a perspective view in FIG. 3, a locking portion 39 is provided on the front portion of the bottom plate 38, and downward moving operation portions 40, 40 and a switch-in portion 41 which are inclined rearward are provided upright on the left and right sides of the bottom plate 38. The interlocking body 42 can be moved slightly back and forth by the action of the long grooves 43, 43 and the flanged pins 44, 44 projecting downward to the floor plate 19 of the cassette container 5 so as to be loosely fitted therein. Dynamic operation part
40 so that it contacts the inclined plate 33 of the grip shaft lifting plate 35,
The grip shaft 29 is held by the floor plate 19 of the cassette container 5 and before loading shown in FIG. 7, the grip shaft 29 is also engaged with the U-shaped groove 34, whereby the large diameter portion 45 of the grip shaft 29 is fixed to the cassette body. The grip shaft holding means (H) including the grip shaft holding plate 31 and the grip shaft elevating plate 35 described above is configured so that the grip shaft 27 is held at an upper position where it is not engaged with the grip portion 27.

Further, at the position before loading, the interlocking body 42, which is biased rearward by the action of the spring 46, has its locking portion 39 abutted against the front edge 47 of the floor plate 19 of the cassette container 5. Then, when the cassette 6 is placed on the floor plate 19 of the cassette container 5 with the moving plate 8 facing downward, the protruding piece 18 is fitted into the groove 17 of the moving plate 8 and the notch 48 provided in the front lid 15. Since the engaging portion 39 of the inserted interlocking body 42 engages with the front edge 49 of the moving plate 8, the cassette 6 is moved forward by a very small amount (arrow direction (C direction) in FIGS. 1 and 6). When pushed, the interlocking body 42 is gradually advanced to the position where the collar pin 44 contacts the rear edge of the groove 43 as shown in FIG. The abutting grip elevating plate 35 moves down slightly, and the grip shaft 29 engaging with the U-shaped groove 34 also moves down, so that the large diameter portion 45 becomes the grip portion of the cassette body 7. The loading roller 51, which is engaged with 27 and is simultaneously pivotally supported (biased downward by a spring 50) in a bridge shape to the container guide plates 2 and 2, of the cassette body 7. Elastically rollingly contacting the upper surface, the projection 18 draws the locking claw 9 to release the fixation of the moving plate 8, and the switch piece of the loading switch 82 is pushed downward by the switch insertion portion 41 to load it. The switch 82 is turned on, and the loading motor 53 rotates in the loading direction.The loading motor 53 engages the long groove 55 with the pin 54 of the guide plate 23 and the train wheel holding plate 74.
The loading arm 57 pivotally supported by the hepin 56 and the loading roller 51 are speed-changed via the transmission mechanism 58, respectively, so that the cassette 6 is loaded by a forward movement and a downward movement thereafter. The movable plate 8 is opened and moved in the direction of arrow B as described above, and the front lid opening / closing mechanism 59 opens the front lid 15 of the cassette 6 as shown in FIG.

The transmission mechanism 58 illustrated in FIG.
The rotation of the first belt transmission mechanism 80, the worm 81, the worm wheel 60, and the gears 61, 62, 63, 64 to the gear 65 of the loading arm 57 while decelerating the rotation.
The worm wheel 66 meshing with the worm 81 and the loading roller 45 are rotated via the second belt transmission mechanism 67, and the guide pins 24, 25, 26 are located at the front and rear grooves 3a at the initial stage of loading shown in FIG. Engage with the front side of 3b,
The loading arm 57 rotates in the direction of arrow D to move the cassette container 5 and the cassette 6 above the reel 68 of the recording / reproducing apparatus, and guide pins 24, 25, 26 in the vertical grooves 4a, 4b, 4c.
Has entered and the subsequent cassette container 5 and cassette 6
Starts to move downward, the cassette main body 7 is disengaged from the loading roller 51, and the forward movement ends, and when the cassette container 5 reaches the lower part of the vertical groove as shown in FIG. 9, the opening / closing arm 69 of the front lid opening / closing mechanism 59 , The pin 70 is pushed down by the loading arm 57 and rotated counterclockwise to rotate the front lid 15
Is opened, and the motor stop switch 71 operates in the cassette 5 so that the loading motor 53 is de-energized, and the hub hole 12 of the cassette body 7 and the hub hole 11 of the moving plate 8 are closed. However, the reel 68 is fitted, the lower surface of the cassette body 7 is supported by the support pins 72, 72, 72 of the apparatus body 1, and the loading operation ends.

The transmission mechanism 58 is configured so that the movement amount (movement speed) of the cassette body 7 performed by the rotation of the loading roller 51 becomes larger than the movement amount (movement speed) of the cassette container 5 performed by the rotation of the loading arm 57. The moving plate 8 with respect to the cassette body 7
The moving plate 8 moves backward relative to the cassette body 7, and at the end of the forward movement of the cassette container 5, both hub holes 11 and 12 are aligned and the moving plate 8 is in the open position. The locking claw 9 is the other locking hole of the moving plate 8.
It rushes into 13 and is held in the open position.

The movement of the grip shaft holding means (H) is such that the loading shaft 51 rotates forward while the cassette main body 7 moves forward while the large diameter portion 45 of the grip shaft 29 remains engaged with the grip portion 27 by the bias of the spring 28. The holding plate 31 rotates clockwise in FIG. 7, and the grip shaft 29 freely moves in the long groove 37, and gradually comes out of the U-shaped groove 34 (since the cassette body 7 moves longer than the cassette container 5). However, it remains engaged with the grip portion 27.

A plate 73 for engaging and opening the front cover 15 is pivotally supported by the torque spring on the opening / closing arm 69 of the front cover opening mechanism 59.

Although not shown, the cassette ejecting operation is carried out by the operation completely opposite to the loading operation.

Effect of the Invention The cassette loading device according to the present invention is configured as described above, and the moving plate 8 moves backward with respect to the cassette body during the loading movement of the cassette 6, thereby opening the moving plate 8. Therefore, the amount of movement of the cassette container 5 required for the loading operation only needs to be known, and the entire loading device can be made compact despite the sufficient loading stroke of the cassette.

The pushing amount of the cassette 6 required to start the loading operation is small, and since the loading motor 53 automatically performs the loading by the slight pushing, the operation is simplified and the cassette 6 before the automatic loading is started is loaded. The allowance, that is, the allowance for manual grasping, is secured for a long time, facilitating the operation of pushing or removing the cassette, improving the operability, and enabling the reliable loading of the cassette, thus improving the reliability. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a main part of the apparatus, FIG. 2 is a perspective view of a cassette container, FIG. 3 is a perspective view of an interlocking body, and FIG. FIG. 4 is a perspective view of the grip shaft holding plate, FIG. 5 is a perspective view of the grip shaft elevating plate, FIGS. 6 and 7 are side views showing respective operations of the grip shaft holding means, and FIGS. FIG. 10 is a side view of a main part in FIG. 1 showing each operation, FIG. 10 is a perspective view of a moving mechanism,
11 is a plan perspective view of the cassette, FIG. 12 is a rear perspective view of the cassette, FIG. 13 is a plan view of the cassette with the front lid open,
FIG. 14 is a side view of FIG. Explanation of reference numerals 1 ... Device body, 2 ... Container guide plate, 3a, 3b ... Front and rear grooves, 4a, 4b, 4c ... Up and down grooves, 5 ... Cassette container,
6 ... Cassette, 7 ... Cassette body, 8 ... Moving plate,
12 …… Hub hole, 15 …… Front lid, 20 …… Side plate, 27 …… Grip part, 29 …… Grip shaft, 40 …… Down movement operation part, 41 …… Switch input part, 42 …… Interlocking body, 51 …… loading roller, 52 …… cassette upper surface, 53 …… loading motor, 57 …… loading arm, 58 …… transmission mechanism, 59…
... Front lid opening / closing mechanism, 75, 76 ... Wheel train holding plate, loading switch 82 (A) ... Loading groove, (H) ... Grip shaft holding means.

Claims (1)

[Scope of utility model registration request] 1. A cassette container 5 for holding a cassette 6 by locking the moving plate 8 in a loading device for a cassette 6 mounted with the moving plate 8 retracted and the front lid 15 opened. A pair of container guide plates 2 provided upright on the apparatus main body 1 and having a loading groove (A) for guiding the cassette container 5 in the front-rear direction and the up-down direction,
2 and grip shaft holding means (H) provided on the left and right side plates 20, 20 of the cassette container 5 for loosely inserting the grip shaft 29 elastically engaged with the grip portion 27 of the cassette body 7,
A lower operation unit 40 for lowering the grip shaft holding means (H) to perform the elastic engagement of the grip shaft 29 by a slight pushing of the cassette 6, and a switch input unit 41 for energizing the loading motor 53. The interlocking body 42 having the cassette container 5 and the front and rear grooves of the loading groove (A)
The loading arm 57 that rotates so as to move in the upper and lower grooves 3a, 4a and the upper and lower grooves 3b, 4c and the cassette upper surface portion 52 of the cassette main body 7 while rolling while loading the front and rear grooves 3a, 4a. A loading roller 51 that moves the cassette body 7 with respect to the moving plate 8, a transmission mechanism 58 that transmits the rotation of the loading motor 53 to the loading arm 57 and the loading roller 51, and the cassette container 5 that operates in conjunction with the loading operation. And a front lid opening / closing mechanism 59 provided to open the front lid 15 of the cassette 6 near the end of the movement operation to the lower part of the vertical groove.
The cassette loading device 58 is configured such that the amount of movement by the loading roller 51 is larger than the amount of movement by the loading arm 57.