JPH0732727U - Cassette insertion mechanism - Google Patents

Abstract

(57) [Summary] [Object] To improve a structure of a lever for moving a protrusion of an elevator and a drive mechanism thereof in a cassette insertion mechanism of a cassette deck. A deck case 1 having an L-shaped long hole 3 formed in a side wall 2, an elevator 4 for accommodating a cassette 20 and carrying it to a predetermined position, and the L-shaped long hole provided on the side surface of the elevator 4. In a cassette insertion mechanism having a protrusion 5 that engages with a first lever 6 and a second lever, the mechanism for moving the protrusion along the L-shaped elongated hole is rotatably connected to each other. 8, one end of the first lever is rotatably attached to a side wall of the deck case, one end of the second lever is rotatably connected to a protrusion of the elevator, and the first lever is It shall be connected to the drive mechanism.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cassette insertion mechanism for moving a cassette inserted in a cassette deck from an insertion position to a predetermined position.

[0002]

[Prior art]

 A conventional cassette insertion mechanism will be described with reference to the drawings. FIG. 6 shows a side view of the deck case 1 of the cassette deck. The cassette 20 inserted from the opening (not shown) in the front of the cassette deck is placed on the elevator 4 in the deck case 1. The elevator 4 has a protrusion 5 protruding from its side surface, and the protrusion 5 protrudes to the outside of the side wall 2 through an L-shaped elongated hole 3 provided in the deck case 1. Further, the deck case 1 is provided with a lever 36 which is rotatable around a point 35. A long hole 39 is formed in the lever 36, and the long hole 39 is engaged with the protrusion 5 of the elevator 4 protruding from the deck case 1 to the outside. The lever 36 is connected to a motor 38 via a reduction gear group 37.

When a detection mechanism (not shown) detects that the cassette 20 is placed on the elevator 4, the motor 38 rotates, and the lever 36 moves from the state of FIG. 7A via the reduction gear group 37. , Rotate counterclockwise in the figure. When the lever 36 rotates, the protrusion 5 of the elevator 4 on which the cassette 20 is placed is moved toward the back of the deck case 1 along the horizontal portion of the L-shaped elongated hole 3. As the lever 36 continues to rotate, the protrusion 5 collides with the vertical portion of the L-shaped elongated hole 3 along the vertical portion of the L-shaped elongated hole 3, as shown in FIG. 7B. To descend. Then, when the cassette 20 mounted on the elevator 4 is positioned at a predetermined position by a positioning pin (not shown) provided on the deck case 1, the motor 38 stops.

When the cassette 20 is taken out from the cassette deck, the operation reverse to the above description is performed. The clockwise rotation of the lever 36 raises the elevator 4 and then moves it to a position close to the opening of the cassette deck, and finally exposes the cassette 20 partially outside from the opening.

[0005]

[Problems to be solved by the device]

 In the conventional example described above, the elongated hole 39 of the lever 36 must be engaged with the projection 5 as shown in FIG. 7 in the entire movement stroke of the elevator. Therefore, the lever 36 and its elongated hole 39 are required to be long. Therefore, when the lever 36 is in the vertical position, the thickness of the entire cassette deck becomes large.

Further, in the conventional example, the motor 38 and the lever 36 are connected via a reduction gear group 37. Since many gears are used in this way, a space for the gears is required, and there are problems that cost is high and parts management is difficult. An object of the present invention is to reduce the thickness of the cassette deck by improving the lever that moves the protrusion of the elevator in the cassette insertion mechanism of the cassette deck.

A further object of the present invention is to reduce the number of parts of the cassette deck by improving the connection structure between the lever for moving the protrusion of the elevator and the drive source in the cassette insertion mechanism of the cassette deck. Is.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is an elevator for accommodating a deck case having a L-shaped long hole formed in its side wall and a cassette and transporting the cassette to a predetermined position, which is accommodated in the deck case. An elevator, provided with a protrusion provided on a side surface of the elevator to engage with the L-shaped long hole, a cassette inserted in a deck case is placed on the elevator, and the protrusion is of the L-shaped. In the cassette insertion mechanism in which the cassette is moved to a predetermined position by moving the long hole, the first mechanism in which the protrusion is moved along the L-shaped long hole is rotatably connected to each other. A lever and a second lever, one end of the first lever is rotatably attached to a side wall of the deck case, and one end of the second lever is rotatable on a protrusion of the elevator. Is connected, said first lever shall be the one connected to a drive mechanism.

Further, according to the present invention, the driving force can be transmitted to the first lever by a lever or a thread-shaped member.

[0010]

[Action]

 By providing the second lever between the first lever and the protrusion, the protrusion can be moved along the L-shaped elongated hole without providing the elongated hole in the first lever. Become. Therefore, the length of the first lever for moving the protrusion is shortened, and the thickness of the cassette deck can be reduced.

Further, since the driving force for the first lever is transmitted by the lever or the thread-shaped member, it is not necessary to use a large number of gears as in the conventional case.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In each of the drawings, those having the same function are designated by the same reference numeral, and duplicated description will be omitted.

First Embodiment FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a side view, and FIG. 3 is a plan view taken along the line AA of FIG. In the figure, only a part of the deck case necessary for explanation is shown, and the other parts are omitted. An L-shaped long hole 3 is provided in the side wall 2 of the deck case 1. A protrusion 5 is provided on the side surface of the elevator 4 on which the cassette 20 is placed, and the protrusion 5 projects to the outside of the side wall 2 through the L-shaped long hole 3. A first lever 6 is rotatably attached to a side wall 2 of the deck case 1 about a point 7. Further, the third lever 10 is integrally formed with the first lever 6. A second lever 8 is rotatably connected between the first lever 6 and the protrusion 5 of the elevator 4.

A motor 9 serving as a drive source for the elevator 4 is attached to the rear of the deck case 1. The motor 9 and the third lever 10 are connected by the drive member 11 and the fourth lever 12. The drive member 11 is provided with two horizontal elongated holes 13 and 14, and the elongated holes 13 and 14 engage with two support pins 15 and 16 provided on the side wall 2 of the deck case 1. As a result, the drive member 11 can be moved in the horizontal direction.

As shown in detail in FIG. 3, an elongated hole 17 is formed at one end of the driving member 11 in a direction perpendicular to the moving direction thereof. A disk-shaped cam 18 is attached to the motor 9, and a projection 19 is provided at an eccentric position of the cam 18. The protrusion 19 engages with the long hole 17 of the driving member 11. With this configuration, when the motor 9 rotates, the drive member reciprocates in the horizontal direction.

A fourth lever 12 connects between the other end of the drive member 11 and the third lever 10. The fourth lever 12 is rotatably connected to both the third lever 10 and the drive member 11. According to the cassette insertion mechanism configured as described above, when the cassette 20 is inserted from the opening (not shown) on the front face of the cassette deck, the cassette 20 moves on the elevator 4 in the deck case 1 and is inserted to the deepest position. When it is detected by a detection mechanism (not shown), the motor 9 rotates. When the motor 9 rotates from the state shown in FIG. 3, the driving member 11 moves rearward of the deck case 1 due to the engagement of the protrusion 19 of the cam 18 and the elongated hole 17 of the driving member 11.

This movement is transmitted to the first lever 6 by the fourth lever 12 and the third lever 10, and the first lever 6 moves counterclockwise around the point 7 from the state shown in FIG. 4 (a). Rotate in the direction. The rotation of the first lever 6 is transmitted to the protrusion 5 of the elevator 4 via the second lever 8, and the protrusion 5 moves the horizontal portion of the L-shaped elongated hole 3 to move the elevator 4 to the deck case 1. Move to the back.

When the first lever 6 continues to rotate further, as shown in FIG. 4 (b), the protrusion 5 collides with the vertical portion of the L-shaped long hole 3 and the L-shaped long hole 3 Descends along the vertical portion of. Then, when the cassette 20 placed on the elevator 4 is positioned at a predetermined position by a positioning pin (not shown) provided on the deck case 1, the motor 9 is stopped by a mechanism (not shown).

When the cassette 20 is taken out from the cassette deck after the reproduction of the cassette 20 is completed, the reverse operation is performed. The clockwise rotation of the first lever 6 raises the elevator 4 and then moves it horizontally to a position close to the opening of the cassette deck. Finally, the cassette 20 is partially exposed to the outside from the opening of the cassette deck by a known mechanism (not shown).

In the embodiment described above, the lever for moving the protrusion 5 of the elevator 4 is formed by the first and second levers 6 and 8, so that it is clear from the comparison between FIG. 4 and FIG. 7. Moreover, the dimension in the height direction becomes small. Therefore, the thickness of the cassette deck can be reduced. Further, since the connection between the motor 9 and the first lever 6 is constituted by the cam 18, the driving member 11, the fourth lever 12 and the third lever 10, the structure is simple and does not take up space. be able to.

Example 2 FIG. 5 shows a side view of a second example in which the driving force is transmitted in the form of a thread. In this example, the gear 21 is formed on a part of the first lever 6. A fifth lever 23 having a gear 22 that meshes with the gear 21 is rotatably attached to the side wall 2 of the deck case 1. A roller 24 is provided at the tip of the fifth lever 23, and is biased clockwise by a torsion spring 25.

One end of the thread 27 is fixed to one point 26 of the side wall 2. The yarn 27 is wound on the reel 32 through the roller 24 of the fifth lever 23 and the plurality of rollers 29, 30, 31 provided on the side wall 2. The reel 32 is connected to the motor 9 via reduction gears 33 and 34. When the cassette 20 is not inserted into the cassette deck, the torsion spring 25 stores the force for biasing the fifth lever 23 in the clockwise direction while the thread 27 is wound around the reel 32. There is.

When the motor 9 rotates due to the insertion of the cassette 20, the reel 32 rotates through the reduction gears 33 and 34 to send out the yarn 27. When the thread 27 is fed out, the fifth lever 23 rotates clockwise by the force stored in the torsion spring 25, and the first lever 6 rotates counterclockwise. After that, the apparatus of this example performs the same operation as that of the above-described first embodiment, and positions the cassette 20 at a predetermined position.

When the cassette 20 is taken out from the cassette deck, the motor 9 reversely rotates to wind the yarn. As a result, the fifth lever 23 rotates counterclockwise and the first lever 6 rotates clockwise. As a result, the cassette 20 is moved to the outside as in the first embodiment.

[0025]

[Effect of device]

 According to the present invention, it is possible to reduce the size of the cassette insertion mechanism and reduce the number of parts of the transmission mechanism.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view seen from the line AA of FIG.

FIG. 4 is a diagram for explaining the operation of FIG.

FIG. 5 is a side view of the second embodiment of the present invention.

FIG. 6 is a side view of a conventional cassette insertion mechanism.

FIG. 7 is a diagram for explaining the operation of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Deck case 2 ... Side wall 3 ... L-shaped long hole 4 ... Elevator 5 ... Protrusion 6 ... 1st lever 8 ... 2nd lever 9 ... Motor 10 ... 3rd lever 11 ... Driving member 12 ... 4th Lever 13, 14 ... Long hole 15, 16 ... Pin 17 ... Long hole 18 ... Cam 19 ... Protrusion 20 ... Cassette 21, 22 ... Gear 23 ... Fifth lever 24, 29, 30, 31 ... Roller 25 ... Torsion spring 27 ... Thread 32 ... Reel 33, 34 ... Reduction gear 36 ... Lever 37 ... Reduction gear 38 ... Motor 39 ... Long hole

Claims (3)

[Scope of utility model registration request] 1. A deck case having an L-shaped long hole formed in a side wall thereof, an elevator for accommodating a cassette and carrying the cassette to a predetermined position, the elevator being accommodated in the deck case, and a side surface of the elevator. A cassette provided in the L-shaped elongated hole is provided, the cassette inserted in the deck case is placed on the elevator, and the protrusion is moved in the L-shaped elongated hole to form the cassette. In a cassette insertion mechanism in which a cassette is moved to a predetermined position, a mechanism for moving the protrusion along the L-shaped long hole,
A first lever and a second lever rotatably connected to each other, one end of the first lever is rotatably attached to a side wall of the deck case, and one end of the second lever is A cassette insertion mechanism, which is rotatably connected to a protrusion of an elevator and in which the first lever is connected to a drive mechanism. 2. The cassette inserting mechanism according to claim 1, wherein the driving force is transmitted to the first lever by a lever. 3. The cassette inserting mechanism according to claim 1, wherein the driving force is transmitted to the first lever by a thread-shaped member.