JPH03280242A - Cassette loader - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cassette loading device in a recording/reproducing apparatus using a tape cassette.

(Prior Art) Conventionally, in recording and reproducing apparatuses such as video tape recorders (VTRs) and digital audio recorders (DATs), tape cassettes are stored in cassette holders through cassette insertion slots and are held horizontally toward the inside of the apparatus. After being conveyed, the cassette is conveyed vertically downward, and then the cassette is placed on a predetermined reel stand to complete cassette loading.

In this case, in order to transport the cassette holder, levers are used to hold both sides of the cassette holder, and power from a drive motor is applied to the levers via multiple gears and a relay shaft. I was able to do this.

FIG. 3 is a perspective view showing such a conventional cassette loading device.

In the cassette loading device @1 shown in this figure, a cassette holder 2 containing a tape cassette is supported by left and right side frames 3a and 3b so that it can be pulled in, ejected, and moved up and down. teeth,
Both sides of it are attached to the first lever 4. It is held by a second lever 5, and a plurality of gears 7a, 7b, 9.11 are attached to this lever 4°5.
The power of the motor 10 is transmitted through a, 11b, 13 and a relay shaft 12.

In the above, the side frames 3a and 3b guide the cassette holder 2 through their respective L-shaped grooves 11 and 12. As a result, when the cassette holder 2 moves from the loading start position to the loading completion position when inserting the cassette, it moves horizontally (retracting movement) and then vertically (moving up and down), and when the cassette is ejected, it moves from the loading completion position to the loading completion position. To move to the loading start position, move from vertical to horizontal.

The left and right first levers 4 (the right side is the illustrated path) are each attached to the cassette holder with one end provided with a pivot point. The left and right second levers 5 (the right side is the illustrated path) are each attached at one end to the other end of the left and right first lever 4 with a rotation fulcrum. The other ends of the left and right second levers 5 are attached to the left and right side frames 3a, 3b with pivot points 8 provided. Drive gear 7a.

7b, each center is the side frame 3a.

They are each rotatably attached to the pivot point 8 of 3b. A leg spring 6 is disposed in a cylindrical portion protruding from the center of the driving gears 7a, 7b and a single-shaped spring locking portion 14 (the path shown on the right side) provided in the vicinity of the cylindrical portion. 7a, 7
b presses the protrusion 15 (the path shown on the right side) provided approximately in the center of the second lever 5 via the leg opening spring 6, and
The lever 5 is rotated.

The gear 9 provides power to the drive gear 7a, is rotatably provided at the back of the left side frame 3a, and meshes with the drive gear 7a.

A rotational force is applied to the gear 9 from a drive motor 10.

The drive motor 10 has a main body attached to a side frame 3d, and a screw gear 1 that engages with a gear 9 on its rotation shaft.
3 is fixed.

A hole (not shown) into which the relay shaft 12 is inserted is formed on the front side (cassette insertion port side) of the side frames 3a, 3b, and the relay shaft 12 is rotatable with both ends attached to the side frames 3a, 3b. It is designed to protrude outward. Gears 11a are provided at both ends of the relay shaft 12 and mesh with the drive gears 7a and 7b, respectively.

11b is fixed, and the rotational force of the left drive gear 7a based on the drive motor 10 is transmitted to the right drive gear 7b via the relay shaft 12.

In the apparatus configured as described above, first, a tape cassette is inserted through an insertion slot (not shown), and when the tape cassette is held in the cassette holder 2, the drive motor 1
0 rotates in the direction of loading the cassette, and this rotational force is transmitted to the second lever 5 on the left via the screw gear 13 → gear 9 → drive gear 7a → left open leg spring 6, and the screw gear 13 → Gear 9 → Drive gear 7a → Gear 1
1a→relay shaft 12→gear 11b→drive gear 7b→right leg opening spring 6→right second lever 5. As a result, the rotational force of the drive motor 10 in the loading direction is applied to the left and right levers 5, and the force of the levers 5 pulls the cassette holder 2 toward the back via the lever 4.
By being guided by the L-shaped grooves 11 and 12, the cassette holder 2 moves horizontally toward the back. When the horizontal movement is further completed, the force of the lever 5 pulls the cassette holder 2 downward via the lever 4, and the cassette holder 2 is guided by the L-shaped grooves 11 and 12, so that the cassette holder 2 is moved downward. The cassette holder 2 is set at the loading position.

On the other hand, when ejecting the tape cassette, the drive motor 10 ejects the cassette in the direction (opposite direction to the above).
This rotational force is transmitted to the second lever 5 on the left and to the second lever 5 on the right along a route similar to the route described above.

The force of the left and right levers 5 pushes the cassette holder 2 upward via the lever 4, causing the cassette holder 2 to move vertically upward. When the vertical movement is further completed, the force of the lever 5 pushes the cassette holder 2 toward the front via the lever 4, and moves the cassette holder 2 to the ejection position.

According to such a cassette loading device, the path through which force is transmitted from the motor 10 to the second lever 5 on the right side is different from the path through which force is transmitted from the motor 10 to the second lever 5 on the left side. Then, drive gear 7a → relay gear 11a
→ Relay shaft 12 → Relay gear 11b, that is, an extra route is required for the relay shaft and three gears. For this reason, the relay shaft -
Due to the resistance of the book and three gears, the force applied to the second lever 5 on the right side and the second lever 5 on the left side is greatly reduced, and the cassette holder 2 does not move smoothly.

(Problems to be Solved by the Invention) According to the conventional cassette loading device described above, the number of gears and relay shafts that transmit rotational force to the left and right sides of the cassette holder is different, so the force for moving the cassette holder is different. It was different on the left and right sides, and the cassette holder was not moving smoothly.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cassette loading device that can eliminate the above-mentioned problems and equalize the left and right forces for moving the cassette holder.

[Structure of the Invention (Means for Solving the Problems) The present invention includes a holder for storing a cassette, and a device that guides the holder to be pulled in, ejected, and moved up and down between a loading start position and a loading completion position. Left and right side frames, left and right levers that are rotatably attached to the left and right sides of the holder and are traction members for the holder, respectively, and levers that are provided on the left and right side frames to move the holder to the loading start position and the loading position. Left and right drive gears drive the left and right levers, respectively, so as to move between the left and right levers, and left and right drive gears that are connected by a relay shaft to interlock the left and right drive gears and mesh with the left and right drive gears, respectively. relay gear,
It includes a rotational force supply gear that meshes with one of the left and right relay gears to supply rotational force, and a motor that supplies rotational force to the rotational force supply gear to rotate the rotational force supply gear. It is characterized by what it did.

(Function) According to such a configuration, the difference between the path for transmitting the rotational force to the left lever of the cassette holder and the path for transmitting the rotational force to the right lever is transferred to - one relay shaft and one relay gear. This reduces the difference in force between the left and right sides for moving the cassette holder.

Therefore, the left and right levers can apply approximately equal force to the cassette holder.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of a cassette loading device according to the present invention, with FIG. 1 being a perspective view and FIG. 2 being an exploded perspective view of main components.

In FIG. 1, a cassette loading device 21 has a cassette holder 22 containing a tape cassette supported by left and right side frames 23a and 23b so that it can be pulled in, ejected, and moved up and down. , both sides of which are connected to the first lever 24. Hold it with the second lever 25, and attach it to this lever 24, 25.
a, 27b, 29.31a, 31b and relay shaft 2
The power of the drive motor 30 is applied through the motor 8.

More specifically, in FIG. 2, the holder 22 has a box shape that extends rearward from a cassette insertion port (not shown). The holder 22 has pins 34.35 protruding from the front and rear sides of the holder 22, and these pins 34.3
5 is an L-shaped groove 3 provided in the side frames 23a and 23b.
2.33. This results in
When inserting a cassette, the cassette holder 22 moves horizontally (retracting movement) when moving from the loading start position to the loading completion position, and from vertical movement to horizontal movement when moving from the loading completion position to the loading start position when ejecting the cassette. do.

The pins 34, 35 are in the L-shaped groove 3 in the assembled state.
It protrudes outward from 2.33.

One end of the left and right levers 24.24 is rotatably attached to a pin 34 protruding from the left and right L-shaped grooves 32.32, and the other end of the lever 24.24 is connected to the lever 25°25.
It can be rotatably attached to one end of the The other end of the left and right levers 25.25 has a hole 3.
8 is formed, and pins 3 protruding from the lower side of the L-shaped grooves 32 of the side frames 23a and 23b are inserted into the holes 38, respectively.
7, the levers 25.degree. 25 are rotatably attached to the side frames 23a, 23b. A pin 29 is formed in the middle of the lever 25.

The left and right drive gears 27a and 27b each have a hole 4 in the center.
0 is formed, and this hole 40 connects the hole 3 of the lever 25.
It can be rotatably attached to a pin 37 inserted from 8. The opening leg spring 2 is attached to the outer peripheral surface of this hole 40.
A cylindrical portion 41 is formed for attaching 6. Further, the drive gears 27a and 27b include the pin 3.
A hole 42 is provided into which the number 9 is movably inserted, and a letter-shaped spring locking portion 43 is provided by curving 90 inches outward from the inner periphery of this hole 42. The spring 26 is attached to the cylindrical portion 41 and assembled by sandwiching the spring locking portion 43 and the pin 39 between both ends of the spring. direction (or the opposite direction), and when one end of the spring is pressed against one side of the spring locking part 43, the other end of the spring presses one side of the pin 39, and the lever 2
Rotate (or reverse) 5.

A hole 44 into which the relay shaft 28 is inserted is formed on the side of the cassette insertion port in the side frames 23a, 23b. Both ends of the relay shaft 28 are rotatably inserted into the holes 44 and 44 so as to protrude from the side frames 23a and 23b. Relay gears 31a and 31b are fixed to both ends of this relay shaft 28. These relay gears 31a and 31b are drive gears 27a and 27, respectively.
It is designed to interlock with b. Furthermore, a hole 45 into which the rotating shaft of the drive motor 30 is inserted is provided below the hole 44 of the left side frame 23a, and the main body of the drive motor 30 is attached to the inner surface of the frame 23a. A rotating shaft projects from the outer surface of the side frame 23a.

A rotational force supply gear 29 is fixed to the rotational shaft of this motor 30. This rotational force supply gear 29 meshes with the relay gear 31b.

Next, the operation will be explained.

First, when a tape cassette is inserted from a cassette insertion slot (not shown), the drive motor 30 rotates in the direction of loading the cassette, and this rotational force is transferred to the rotational force supply gear 2.
9 → Relay gear 31a → Drive gear 27a → The rotational force is transmitted to the second lever 25 on the left side via the left side opening leg spring 26, and the rotational force supply gear 29 → Relay gear 31a → Relay shaft 2
8→relay gear 31b→drive gear 27b→transmitted to the second lever 25 on the right side via the leg opening spring 26 on the right side. As a result, the rotational force of the drive motor 31 in the loading direction is applied to the left and right levers 25, and the left and right levers 25
The force is applied from the left and right sides of the cassette holder 2 via the lever 24.
2 toward the back, and the cassette holder 22 is moved horizontally by the guides of the L-shaped grooves 32 and 33. When the horizontal movement is further completed, the force of the lever 25 pulls the cassette holder 22 downward via the lever 24, and the L-shaped groove 32
．． 33, the cassette holder 22 is vertically moved downward and set at the loading position.

On the other hand, when ejecting the tape cassette, the rotating shaft of the drive motor 30 rotates in the direction of ejecting the cassette, and this rotational force is applied to the left second lever 2 on the same light path as above.
5 and is also transmitted to the second lever 25 on the right side. The force of the left and right levers 25 pushes the cassette holder 22 upward via the lever 24, causing the cassette holder 22 to move vertically upward. When the vertical movement is further completed, the force of the lever 25 pushes the cassette holder 22 toward the front via the lever 24, and the cassette holder 22 is moved horizontally to the ejection position.

According to such a cassette loading device, the path through which force is transmitted from the motor 30 to the second lever 25 on the right side is different from the path through which force is transmitted from the motor 30 to the second lever 25 on the right side. Then, relay gear 31a → relay shaft 2
8 minutes, that is, the number of relay shafts and gears increases by one, and the number of unnecessary paths is reduced by two gears compared to the conventional example shown in FIG.

Therefore, the difference between the force applied to the second lever on the right side and the force applied to the second lever on the left side is reduced, allowing the cassette holder 22 to move smoothly.

[Effects of the Invention] As described above, according to the present invention, the difference between the left and right forces for moving the cassette holder can be reduced, and the cassette holder can be moved smoothly.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the cassette loading device according to the present invention, FIG. 2 is an exploded perspective view of the main parts of the cassette loading device shown in FIG. 1, and FIG. 3 is a conventional cassette loading device. FIG. 21... Cassette loading device, 22... Cassette holder 23a, 23b... Side frame, 24... First
levers, 25...second levers 27a, 27b...
- Drive gear, 28... Relay shaft, 30... Drive motor, 31a, 31b... Relay gear. Figure 2 Figure 0 Figure 3

Claims (1)

[Scope of Claims] A cassette loading device that loads and unloads a recording/reproducing cassette inserted through a cassette insertion hole by pulling in/ejecting it and moving it up and down between a loading start position and a loading completion position where recording/reproduction is possible. , a holder for storing the cassette; a left and right side frame for guiding both sides of the holder in the retraction/ejection and up/down movement between the loading start position and the loading completion position; and a traction member for the holder. Left and right levers are rotatably attached to both sides of the holder, and levers are provided on the left and right side frames to move the holder between a loading start position and a loading completion position. , left and right drive gears that respectively drive the left and right levers, left and right relay gears that are connected by a relay shaft to interlock the left and right drive gears and mesh with the left and right drive gears, respectively; and these left and right relay gears. A rotary power supply gear that meshes with one of the rotary power supply gears to supply a rotational force, and a motor that supplies the rotational force supply gear with a rotational force for rotating the rotational force supply gear. cassette loading device.