JPH0450599Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a cassette loading device for reciprocating a cassette between a cassette loading/unloading position and a recording/reproducing position in a magnetic recording/reproducing apparatus.

(b) Prior Art Conventionally, there is a mechanism for opening and closing the flap of a cassette as disclosed in Japanese Utility Model Application Publication No. 61-193554, and a mechanism for manually pressing the cassette holder with no cassette inserted into the cassette holder. It is provided separately from the locking mechanism of the cassette holder that locks the movement of the cassette holder when the cassette is not held in the normal position due to reasons such as being inserted into the cassette holder with an impact, and both mechanisms described above are provided. A conventional cassette loading device equipped with
The figures are exploded perspective views of the main parts of the device, Figures 14 to 17.
The figure is a side view of the main parts of the same device, the guide plate is transparent and the cassette is shown by a two-dot chain line.

The symbols and configurations of FIGS. 13 to 17 will be explained. 1 is a cassette, 2 is a cassette holder, and 3 is a cassette.
Reference numerals a and 3b denote guide pins respectively planted on the side surfaces of the cassette holder 2; 4 a guide plate provided with guide grooves 5a and 5b for respectively guiding the guide pins 3a and 3b;
Leaf springs 8a and 8b are provided on the side surface of the cassette holder 2 and press the lock release button of the cassette 1 by coming into contact with and separating from the contact portion 7 provided on the guide plate 4. are locking pieces provided at the upper end of the guide plate 4, 9 is a lock member disposed on the side surface of the cassette holder 2 so as to be slidable in the vertical direction, and 10 is attached to one end of the lock member 9.
a tension spring that is locked in a locking hole 11 provided in the cassette holder 2 and has its other end locked in a locking hole 12 provided in the side surface of the cassette holder 2 to bias the locking member 9;
13 is a locking member installed on the guide plate 4; 14;
15 is a flap provided on the cassette 1; 15 is a flap opening/closing means rotatably supported by the cassette holder 2 for opening and closing the flap 14; 16;
Reference numeral 17 denotes a rotational support shaft provided on the flap opening/closing means 15, and a torsion spring 17 is capable of biasing the flap opening/closing means 15 counterclockwise about the rotational support shaft 16.

Next, the lid opening operation of the flap 14 of the conventional cassette loading device shown in FIGS. However, to explain the locking operation when moving the cassette 1 in the insertion direction, FIG. 14 shows a state in which the cassette 1 is not placed on the cassette holder 2. In this state, the cassette holder 2 is
When moved in the direction of the arrow in the figure, the upper end of the locking member 9 is engaged with the engagement piece 8a, and the cassette holder 2 is locked. Further, FIG. 15 shows a state in which the cassette 1 is placed in the normal position of the cassette holder 2, and the lower end of the locking member 9 is pressed against the cassette 1 against the biasing force of the tension spring 10. Even if the cassette holder 2 moves downward in the direction of the arrow in FIG. 15, the lock member 9 will not be locked by the locking pieces 8a and 8b. The locking piece 8b is used to prevent the cassette 1 from being inserted into the cassette holder 2 after the locking member 9 has passed through the locking piece 8a due to a cause such as impact insertion of the cassette 1 into the cassette holder 2. If the cassette holder 9 deviates from its normal position, the locking member 9 rises due to the biasing force of the tension spring 10, and becomes capable of being latched to the locking piece 8b at its upper end, thereby locking the cassette holder 2. Further, as shown in FIG. 15, the cassette holder 2 holds the cassette 1 in its normal position, and the guide groove 5
a and 5b, and at a predetermined position, the leaf spring 6 separates from the contact part 7, presses the lock release button provided on the cassette 1, and further moves horizontally to the position shown in FIG. 16. A predetermined portion of the flap opening/closing means 15 is locked by the locking member 13, and the flap opening/closing means 15 is connected to the torsion spring 1.
The cassette holder 2 begins to rotate clockwise around the rotational shaft 16 against the urging force of the cassette holder 7, and the flap 14 begins to open, and the cassette holder 2 is guided by the guide grooves 5a and 5b and begins to descend. As shown in FIG. 17, the flap opening/closing means 15 further rotates clockwise about the rotating shaft 16 to complete opening of the flap 14.

The above is the opening operation of the flap 14 and the locking operation of the movement of the cassette holder 2 in the conventional cassette loading device shown in FIGS. 13 to 17. The operation is the reverse of the aforementioned operation.

(c) Problems to be solved by the invention The conventional cassette loading device shown in FIGS. 13 to 17 described above has a mechanism for opening and closing the cassette flap, and a mechanism for opening and closing the cassette flap when the cassette is not inserted into the cassette holder. A locking mechanism for the cassette holder is separately provided to lock the movement of the cassette holder when the holder is manually pressed or when the cassette is not held at the normal position due to impact insertion into the cassette holder. This poses a problem in that it hinders space saving and reduction in the number of parts, leading to increased costs and increased number of steps.

(d) Means for Solving the Problems The present invention was devised to solve the problems mentioned above, and includes a cassette holder that holds a cassette and moves back and forth between a cassette loading/unloading position and a recording/reproducing position; A cassette loading device is equipped with a side plate having guide grooves for guiding guide pins installed on the left and right sides of the holder, and a first locking piece and a first abutting piece are provided at one end, and a second abutment piece is provided at the other end. a rotating member provided with two locking pieces and a second contact piece and rotatably supported on a side surface of the cassette holder; and a first locking part capable of locking the first locking piece. and a second locking part, a contact part that can come into contact with the first contact piece, and the first locking piece locks with the first locking part and the second locking part. and a biasing means for biasing the rotating member in the rotating direction in which the rotating member is rotated, and when the cassette is held at the normal position of the cassette holder, the cassette contacts the second abutting piece and the rotating member The rotating member rotates against the urging force of the urging means, and the first locking piece is connected to the first locking portion and the second locking member.
The cassette holder is not locked by the locking part of the cassette holder, and the first cassette holder is movable, and the first
The abutting piece contacts the abutting portion, and the rotating member rotates against the urging force of the urging means, and the second locking piece opens the front cover of the cassette. By doing so, the above problem is solved.

(E) Function In the cassette loading device of the present invention, the cassette holder is brought to its normal position by the rotation of the rotating member rotatably supported by the side surface of the cassette holder while being biased by the biasing means. The movement of the cassette holder is locked and unlocked by locking/unlocking the first locking piece, the first locking part, and the second locking part depending on whether the cassette is held or not. Then, the second locking piece opens the front cover of the cassette by rotating the rotating member.

(f) Examples The cassette loading device of the present invention will be explained according to the drawings. Fig. 1 is an exploded perspective view of the main parts of the cassette loading device of the present invention, and Fig. 2 is a plan view of the main parts of the device of the present invention. , FIG. 3 is a perspective view of a rotating member used in the device of the present invention, and FIGS. 4 to 12 are side views of essential parts each showing one operating state of the device of the present invention. In FIGS. 4 to 12, the guide plates are shown to be transparent, and the cassettes are indicated by two-dot chain lines.

1 to 12, the reference numerals and configurations will be explained. 18 is a cassette; 19 is the cassette 18;
cassette holders 20a, 20b for holding and transporting
21 is a guide plate provided with guide grooves 22a and 22b for respectively guiding the guide pins 20a and 20b, and 23a and 23b are provided on the guide plate 21, respectively. The first locking portion and the second locking portion 24 provided on the cassette holder are biased by a torsion spring 25 in a direction to press a front cover lock release button provided on the cassette 18. 19 is a lock release lever rotatably supported; 26 is a protrusion provided on the guide plate 21 and can be pressed against the lock release lever 24; 27 is a rotating member pivotally supported by the guide pin 20b; has one end locked to a locking point 29 provided on the cassette holder 19, and the other end to a locking point 30 provided on the rotating member 27.
The rotating member 27 is locked to the guide pin 20.
a tension spring that biases clockwise around b; 31;
Reference numeral 32 denotes a first locking piece and a first abutment piece provided at one end of the rotating member 27, and 33 and 34 a second locking piece and a first contact piece provided at the other end of the rotating member 27, respectively.
The locking piece and the second contact piece 35 are the guide plate 2
1 is a contact portion that can come into contact with the first contact piece 32; 36 is a locking member provided on the guide plate 21; and 37 is a flap provided on the cassette 18.

Next, to explain the cassette loading operation of the cassette loading device of the present invention, as shown in FIGS. When pressed in the cassette loading direction of 18, the first locking piece 31 is locked to the first locking portion 23a, and the cassette holder 19
When the cassette 18 is locked and the cassette 18 is held at the normal position of the cassette holder 19 as shown in FIG. tension spring 2
8, the first locking piece 31 rotates counterclockwise around the guide pin 20b by a predetermined angle.
The first locking portion 23a and the second locking portion 23
b, the cassette holder 19 is unlocked, and the cassette holder 19 is
However, if the first locking piece 31 passes through the first locking part 23a due to the cassette 18 being inserted with an impact, etc., the cassette 18 is moved to the cassette holder. 19 deviates from the normal position, the pressure on the second contact piece 34 by the cassette 18 is released, and the urging force of the tension spring 28 causes the rotating member 27 to move the guide pin 20b. When the cassette holder 19 is rotated clockwise around the center and moved in the cassette loading direction, the first locking piece 3
1 is locked by the second locking portion 23b to lock the cassette holder 19. The above is the cassette holder 19 during cassette loading operation.
This is the lock/unlock operation.

Further, in the rotating state of the rotating member 27 shown in FIG.
When the lock release lever 24 moves in the cassette loading direction guided by When the front cover lock release button is pressed, the first abutting piece 32 abuts the abutting part 35 as shown in FIG. When moving in the loading direction, as shown in FIGS. 7 to 10, the first abutting piece 32 comes into pressure contact with the abutting part 35, and the rotating member 27 moves around the guide pin 20b. The cassette holder 19 is rotated counterclockwise to open the flap 37 with the second locking piece 33, and the cassette holder 19 is moved into the guide grooves 22a, 2.
2b and moves in the cassette loading direction, as shown in FIG.
2 is spaced apart from the abutting portion 35, and the flap 3
7 is locked by the locking member 36, and as the cassette holder 19 is lowered, the opening of the flap 37 is advanced, and the opening of the flap 37 is completed in the cassette loading completed state shown in FIG. The above is the opening operation of the flap 37 and the cassette loading operation. Incidentally, the cassette unloading operation is performed in the opposite manner to the above-mentioned operation.

(g) Effects of the invention According to the cassette loading device of the invention,
Conventionally, a mechanism for locking the movement of the cassette holder when the cassette is not placed on the cassette holder or not being held in the normal position, and a mechanism for opening the front lid of the cassette are provided separately. It is possible to perform both of the above-mentioned operations with a single mechanism using a rotating member, and it is possible to reduce the number of parts and assembly man-hours, contributing to cost reduction.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of the cassette loading device of the present invention, FIG. 2 is a plan view of the main parts of the device of the present invention, FIG. 3 is a perspective view of a rotating member used in the device of the present invention, and FIG. 4 , Fig. 5, Fig. 6, Fig. 7, Fig. 8,
9, 10, 11, and 12 are side views of main parts showing one operating state of the device of the present invention, and FIG.
3 is an exploded perspective view of the main parts of a conventional cassette loading device, and FIGS. 14, 15, 16, and 17 are side views of the main parts showing one operating state of the conventional cassette loading device. . 18...cassette, 19...cassette holder,
20a, 20b...Guide pin, 21...Guide plate,
22a, 22b...Guide groove, 23a...First locking part, 23b...Second locking part, 27...Rotating member, 28...Tension spring, 31...First locking piece ,
32...first contact piece, 33...second locking piece,
34...Second abutting piece, 35...Abutting portion.

Claims (1)

[Scope of utility model registration request] A cassette loading device comprising a cassette holder that holds a cassette and moves back and forth between a cassette attachment/detachment position and a recording/reproducing position, and side plates having guide grooves for guiding guide pins set on the left and right sides of the cassette holder. , a first locking piece and a first abutting piece are provided at one end, a second locking piece and a second abutting piece are provided at the other end, and the cassette holder is rotatably supported on a side surface of the cassette holder. a rotating member, a first locking part and a second locking part capable of locking the first locking piece, and an abutting part capable of abutting the first abutting piece;
The first locking piece includes urging means for urging the rotating member in a rotational direction in which the first locking piece is locked in the first locking part and the second locking part, and the cassette is When the cassette holder is held at the normal position, the cassette contacts the second abutting piece, the rotating member rotates against the urging force of the urging means, and the first locking piece is not locked by the first locking part and the second locking part, and allows the cassette holder to move, and at a position where the cassette holder has moved a predetermined amount in the cassette insertion direction, the first locking part The abutting piece abuts the abutting portion, and the rotating member rotates against the urging force of the urging means, and the second locking piece opens the front cover of the cassette. A cassette loading device characterized by: