JPH08129811A - Cassette loading device - Google Patents

Abstract

PURPOSE: To prevent the generation of sound based on vibration of a holder for holding a cassette as to a cassette loading device for transferring the cassette wherein a magnetic tape is housed. CONSTITUTION: A bent piece 25G is formed on a leaf spring 25 mounted for holding the cassette which is inserted to the holder 13, and a projecting part 2A is formed on a side plate 2. When the holder 13 comes up to the eject position, the projecting part 2A is abutted on the bent piece 25G, and the holder 13 is pressed by the elastic force of the bent piece 25G.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device for transporting a cassette containing a magnetic tape to a recording / reproducing position or discharging a cassette at the recording / reproducing position.

[0002]

2. Description of the Related Art Conventionally, there has been known a cassette loading apparatus for transferring an inserted cassette to a recording / reproducing position while holding it by a holder or transferring a cassette at a recording / reproducing position to an eject position.

[0003]

However, in the conventional cassette loading device described above, when the holder reaches the eject position, no pressing force is applied to the holder, so the holder vibrates due to external vibration or the like. The holder and the holder guide member sometimes generated a hit sound. In particular, in a car-mounted cassette deck, since the cassette deck is likely to vibrate due to external vibration, vibration is likely to occur due to the vibration of the holder.

The present invention solves the conventional problems described above, and provides a cassette loading device capable of preventing the generation of noise due to the vibration of the holder without adding any parts.

[0005]

In order to achieve the above object, the present invention provides a holder which is moved by being guided by a guide hole of a side plate, a leaf spring which holds a cassette inserted in the holder, and the plate. It is characterized in that it is provided with a bent piece integrally formed with the spring and a projection formed on the side plate and capable of contacting the bent piece.

[0006]

The present invention has the above-described structure, and when the holder is moved to the eject position by the loading mechanism, the bending piece integrally formed with the leaf spring comes into contact with the protrusion of the side plate and bends. The elastic force of the piece is applied to the holder, the vibration of the holder is suppressed, and the generation of sound due to the vibration of the holder can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
It will be explained together. The present embodiment is a cassette loading device used for an on-vehicle cassette deck. 1 to 6
In the figure, reference numeral 1 is a substrate of a cassette deck, and a loading mechanism, a reel driving mechanism, etc. are attached to the substrate 1. Reference numeral 2 is a right side plate screwed to the upper surface of the substrate 1, and an L-shaped guide hole 3 is formed in the side plate 2. Reference numeral 2A denotes a protrusion integrally formed on the upper side of the side plate 2, and the protrusion 2A is bent at a substantially right angle in the direction of the side plate 4. Reference numeral 4 denotes a left side plate screwed to the upper surface of the substrate 1, and the side plate 4 is arranged in parallel with the right side plate 2. Two L-shaped guide holes 5 and 6 (see FIGS. 4 and 5) are formed in the side plate 4. Reference numeral 7 denotes a linear guide hole formed in the upper portion of the side plate 4, reference numeral 8 denotes a drive plate arranged outside the side plate 4, and pins 9A, which are planted in the drive plate 8,
9B is inserted into the guide hole 7 of the side plate 4. Therefore, the drive plate 8 is guided by the guide hole 7 and moves horizontally along the outer surface of the side plate 4. Reference numeral 10 denotes a rack formed on the lower bent portion of the drive plate 8.
Is meshed with a gear (not shown) rotatably supported on the substrate 1, and when the gear is rotated by the rotational driving force of the motor, the rack 10 meshed with the gear is driven and the drive plate 8 is moved. It moves horizontally along the side plate 4. Reference numeral 11 is a first guide hole formed in the drive plate 8, and the first guide hole 11 has a shape in which an inclined portion 11B is connected to one end of a horizontal portion 11A. Reference numeral 12 is a second guide hole formed in the drive plate 8.
Are formed to be inclined from the side of the drive plate 8.

2 and 3 show a holder 13 arranged between the side plates 2 and 4. 2 and 3, 1
4 is an upper holder piece made by bending a metal plate,
The upper holder piece 14 is composed of an upper plate 14A, a side plate 14B, a side plate 14C, and a back plate 14D. Reference numeral 15 denotes a T-shaped hole formed in the upper plate 14A of the upper holder piece 14, and a projecting piece 15A is formed at the center of the hole edge of this hole 15, and the projecting pieces 15B are formed on both sides of this projecting piece 15A. , 15
C is formed. 16 is a protrusion (see FIG. 3) formed by bending a part of the side plate 14B inward, 17A, 17B.
Is an L-shaped small hole formed in the back plate 14D, 18A, 18
B is a pin implanted in the side plate 14B, 19 is a pin implanted in the side plate 14C, and the pins 18A and 18B are inserted into the L-shaped guide holes 5 and 6 formed in the side plate 4. Reference numeral 20 denotes a lower holder piece, and one side of the lower holder piece 20 is formed with locking pieces 21A and 21B bent in an L shape. The locking pieces 21A and 21B are the upper holder pieces 14
After being inserted into the small holes 17A and 17B of the back plate 14D, it is moved in the direction of the side plate 14C. Therefore, the locking pieces 21A,
21B is retained by the small pieces 22A and 22B. 23
Is a hole in which the lower holder piece 20 is formed.
A reel drive shaft (not shown) can be inserted into the reel. Reference numeral 25 denotes a leaf spring made of a spring material. The leaf spring 25 includes a U-shaped portion 25A, a T-shaped protruding piece 25B, and a protruding piece 25.
It is composed of a protruding piece 25C extending substantially at a right angle to B. Numeral 26 is a leaf spring 25 and an upper plate 14A of the upper holder piece 14.
It is a screw for fixing to. As described above, with the lower holder piece 20 locked to the back plate 14D of the upper holder piece 14, the U-shaped portion 25A of the leaf spring 25 is fitted from the back plate 14D side and fixed by the screw 26. In this state, the lower holder piece 20 is biased by the leaf spring 25 so as to approach the upper plate 14A of the upper holder piece 14. At this time, a part of the lower holder piece 20 is replaced by the side plate 14B of the upper holder piece 14.
Since it is regulated by the protruding portion 16, the upper plate 14A and the lower holder piece 20 are held substantially parallel to each other. Both tip portions 25D and 25E of the projecting piece 25B of the leaf spring 25 are inserted into the lower surfaces of the projections 15B and 15C of the upper holder piece 14. 25
F is a bent portion formed on the protruding piece 25B of the leaf spring 25, and this bent portion 25F is provided with the upper plate 1 through the T-shaped hole 15.
It projects from the lower surface of 4A. 25C is leaf spring 2
5 is a projecting piece extending from the U-shaped portion 25A, and a mountain-shaped bent piece 25G is formed at the tip of this projecting piece 25C. A head substrate 27 is slidably supported on the upper surface of the substrate 1, and a magnetic head (not shown) is attached to the head substrate 27. In FIG. 5, reference numeral 29 denotes a spring, one end of which is locked to the hook portion of the drive plate 8 and the other end of which is locked to the pin 18B. The pin 18B is biased rightward (FIGS. 4 and 5) by the spring 29. ing.

Next, the operation of the above embodiment will be described.
When the cassette 28 is inserted from the cassette insertion opening of the cassette deck, the cassette 28 is inserted between the upper plate 14A of the holder 13 and the lower holder piece 20. When the cassette 28 is further inserted into the holder 13, the bent portion 25F of the leaf spring 25 engages with the reel drive shaft insertion hole 28A of the cassette 28 as shown in FIG. It contacts the stopper piece 20A of 20. Therefore, the holder 13 is driven by the cassette 28 and slides in the X direction. When the holder 13 moves for a predetermined length, a switch (not shown) is turned on by the holder 13 to rotate the loading motor. Since the rotational driving force of this motor is transmitted to the rack 10 via the gear mechanism, the drive plate 8
Starts moving to the left from the position shown in FIG. Drive plate 8
This drive plate 8 causes the pins 18A, 18
Since B is driven, the holder 13 is guided by the horizontal portions of the guide holes 5 and 6 and moves in the horizontal direction. Holder 13
Move further in the horizontal direction, pins 18A, 18B
Reaches the vertical portion of the guide holes 5 and 6. Pins 18A, 18
Even if B reaches the vertical portions of the guide holes 5 and 6, the drive plate 8 moves further in the horizontal direction, so that the inclined hole 11 of the drive plate 8
The pins 18A and 18B are driven downward by B and 12. Therefore, the holder 13 moves in the vertical direction and approaches the head substrate 27. When the holder 13 reaches a predetermined position in the vertical direction, a switch (not shown) operates and the loading motor stops. In this way, the cassette 28 inserted from the cassette insertion port is held by the holder 13, first moves in the horizontal direction, then moves in the vertical direction, and stops at a predetermined position. After that, the head substrate 27 moves in the direction of the arrow Y, the magnetic head contacts the magnetic tape in the cassette 28, and the reproducing operation is performed.

When the reproducing operation is completed and the eject button is operated, the loading mechanism operates to move the holder 13 in the vertical direction and then in the horizontal direction to reach the eject position shown in FIG. At the eject position shown in FIG. 1, the bent piece 25G of the leaf spring 25 attached to the holder 13 comes into contact with the lower surface of the projection 2A of the side plate 2, and the holder 13 is moved downward by the elastic force of the bent piece 25G. Be energized. Therefore, the backlash of the holder 13 is prevented.

[0011]

As is apparent from the above embodiment, the present invention forms a bent piece in a part of the leaf spring for holding the cassette in the holder, and when the cassette reaches the eject position, Since the bent piece comes into contact with the protrusion of the side plate and urges the holder by the elastic force of the bent piece, it is possible to prevent the generation of sound due to the vibration of the holder.

[Brief description of drawings]

FIG. 1 is a perspective view of a cassette loading device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a holder of the same embodiment.

FIG. 3 is an exploded perspective view of the holder of the same embodiment.

FIG. 4 is a side view of the embodiment.

FIG. 5 is a side view of the embodiment.

FIG. 6 is a perspective view showing a cassette holding state of the embodiment.

[Explanation of symbols]

 2 side plate 2A protrusion 4 side plate 13 holder 25 leaf spring 25G bent piece

Claims (1)

[Claims] 1. A holder that is guided and moved by a guide hole of a side plate, a plate spring that holds a cassette inserted in the holder, a bending piece integrally formed with the plate spring, and a side plate formed on the side plate. A cassette loading device, comprising: a protrusion capable of contacting the bent piece, wherein the bent piece is brought into contact with the protrusion when the holder reaches an eject position.