JPS5845107B2 - cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tape recorder, and more particularly to a cassette storage device.

A typical cassette storage device for a cassette deck is shown in FIGS. 1 and 2.

In FIGS. 1 and 2, the lid 11 is integrally fixed to a holder 13 that holds a cassette 12. As shown in FIGS.

This holder 13 is rotatably supported by a shaft 14 and is biased by a spring 15.

Further, a locking pin 16 is attached to the side surface of the holder 13, and a locking hook-shaped member 17 is rotatably supported within the deck corresponding to this pin 16 by a shaft 18 and a spring. Powered by 19.

As shown in FIG. 1, when the lid 13 is open, the cassette holder 13 protrudes to the front of the deck, allowing the cassette 12 to be attached and removed, and when the lid 13 is closed, as shown in FIG. In this state, the cassette holder 13 is housed in the deck by the engagement of the locking pin 16 and the hook-shaped member 17, and the cassette 12 held by the holder 13 is moved to the cassette operating position in the deck.

In the cassette operating position, the cassette 12 is connected to the spindle 20 in the deck, the capstan 21 . It is engaged with the restraining spring 22 and the like.

Of course, the lid 13 is large enough to close the opening 23 of the deck.

In a cassette tape deck or a portable tape recorder equipped with the above-mentioned conventional device, operability in loading and unloading cassettes is particularly a problem.

That is, when inserting the cassette 12 into the holder 13, the cassette hits the edge of the lid 12, or in the worst case, the magnetic tape exposed from the cassette hits the lid 12, damaging the magnetic tape.

Further, since the cassette 12 only slightly protrudes from the holder 13 and is located inside the lid 11, it is difficult to take out the cassette 12 from the holder 13.

Various methods have been devised in the past to address the above-mentioned problems, but
In any case, there are drawbacks such as a complicated mechanism, high cost, and applicability only to a specific type of tape recorder.

For example, some devices include a mechanism for pushing the cassette out of the holder to make it easier to take out the cassette.

This pushes the cassette out of the holder in conjunction with the opening operation of the lid, but as shown in Figures 1 and 2, the cassette is inserted into the holder with the head (exposed surface of the magnetic tape) first. It is unsuitable for so-called cassette erect type decks.

That is, there is a high risk that the member pushing out the cassette will come into contact with the tape exposed portion of the cassette, and even if this could be avoided, the structure would be complicated accordingly.

Another idea was to increase the opening angle of the lid and cassette holder, that is, the angle at which they could protrude toward the front of the deck, to improve the operability of loading and unloading cassettes, but this was not possible due to the location of the rotational fulcrum of the lid cassette holder. There is a limit due to the relationship between the opening angle and the opening of the deck, and it is necessary to increase the tension of the separating biasing spring to increase the opening angle.

On the contrary, when closing the lid body and cassette holder, a large amount of force is required for operation, which deteriorates the operability and increases the cost of the spring.

Furthermore, when the lid body and cassette holder are closed, a large force is applied, which puts stress on the holder's support mechanism and various retaining members, shortening the life of the product.

The present invention solves the above-mentioned problems, and includes the installation of a cassette,
To provide a cassette tape recorder with improved operability in ejecting.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

FIG. 4 shows the cassette installed in the cassette operating position within the deck shown in FIG. 3, and FIG. 5 shows the cassette projected from the front of the deck and ready to be taken out.

The lid 31 is made of, for example, a transparent synthetic resin material and has a size sufficient to close the opening 32 of the deck housing.

This lid body 31 has legs 33 and 34 integrally formed in a part.
are formed, and these legs 33, 34 are connected to pins 35, 36.
It is engaged with first and second guide portions (e.g., elongated holes 38 and 39) provided on the side surface of the cassette holding structure 37 or an accessory member through the cassette holding structure 37 .

The structure 37 has a function of being able to hold the cassette with the tape exposed side of the cassette 80 located at the back, and one end thereof is rotatably supported by the substrate 40 by a shaft 41.

The first and second guide portions 38 and 39 are inclined, and the second guide portion 39 is inclined at a steeper angle with respect to the horizontal imaginary line in the drawing than the first guide portion 38.

Also, a pin 3 provided on one leg 34 of the lid 31
One end of a drive lever 42 is pivotally attached to 6.

This drive lever 42 is rotatably supported by the base plate 40 by a shaft 43, and the other end is hooked to one end of a spring 44.

The other end of the spring 44 is hooked to the base plate 40.

Thus, the lid 31 is supported movably along the planar direction of the lid 31 by the first and second guide portions 38 and 39 provided on the cassette holding structure 37, and is rotatable by the shaft 41. It is supported by the casing and can be moved between a first position (see FIG. 4) where the opening 32 of the housing is closed and a second position (see FIG. 5) where the opening 32 is opened.

A locking pin 45 is provided on the side surface of the cassette holding structure 37.

A locking hook-shaped member 46 is provided within the deck in correspondence with the locking pin 45.

This locking hook-shaped member 46 has a hook portion at its tip portion that engages with the pin 45, and is rotatably supported by the base plate 40 by a shaft 47.

Further, the other end of the locking member 46 engages with a sliding member 48 that is slidably supported by the base plate 40.

This engagement has a structure in which longitudinal movement of the sliding member 48 is transmitted to the other end of the locking member 46, as shown in FIG.

A spring 49 is hung between the other end of the locking member 46 and the substrate 40.

Further, a spring 50 is hung between the tip of the sliding member 48 and between the substrates.

A tip of the sliding member 48 is engaged with one end of an operation button 60.

This operation button 60 passes through a front plate 61 of the deck housing and is fixed to a leaf spring 62 as shown in FIG.

The base of the leaf spring 62 is fixed to a support 63 provided on the inner surface of the front plate 61 with a screw 64, and the back surface of the operation button 60 is supported at its free portion.

A cassette tape drive mechanism board 51 is fixed to the board 40 with screws 52 and 53.

The cassette tape drive mechanism board 51 is arranged at an angle with respect to the front panel 61 of the casing.

A spindle 54 is disposed protrudingly on the drive mechanism board 51, and a capstan 55 and a cassette restraining spring 56 are supported.

Further, a magnetic head 65 and a pinch roller (not shown) are provided on the opposite side of the cassette restraining spring 56.

The details of this magnetic head 65 will be omitted, but it is supported by a movable support plate and linked to a playback operation button 70 shown in FIG.

Next, the operation will be explained.

In FIG. 4, the locking pin 45 provided on the cassette holding structure 37 is engaged with the hook of the locking member 46, and the lid body 31 is the first one that closes the opening 32 of the deck housing. held in position.

That is, the pins 35 and 36 of both legs 33 and 34 of the lid body 31 are pressed against the upper end of the second guide portion 39 on the side surface of the cassette holding structure 37 by the drive lever 42, and in this position, the lid body 31 is set at a position where the opening 32 can be closed.

At this time, the cassette holding structure 37 has a different inclination angle between the first guide part 38 and the second guide part 39.
8 presses the wall surface of the first guide portion 38, the cassette holding structure 37 is held at an angle with respect to the lid 31, and the cassette 80 in the cassette holding structure 37 is held at an angle. This corresponds to the drive mechanism board 51 that has been installed.

Thus, the cassette 80 housed in the cassette holding structure 37 engages with the spindle 54 and capstan 55 of the tape drive mechanism, and is pressed toward the magnetic head 65 by the restraining spring 56.

That is, the cassette 80 is stably held in the operating position.

By pressing the operation button 60, the lid 31 is moved to the second position, that is, opened.

That is, when the operation button 60 is pressed against the tension of the leaf spring 62 and the spring 49, the locking member 46 rotates around the shaft 47, and the hook portion at the tip and the locking pin 45 of the cassette holding structure 37 engage. is disengaged.

The unlocked cassette holding structure 37 is connected to the spring 4
4 is rotated around the shaft 41 via the 1 drive lever 42 and protrudes to the outside of the deck via the opening 32.

This state is shown in FIG. As the cassette holding structure 37 rotates, the lid 31 supported by the cassette holding structure 37 moves accordingly and moves to the second position where the opening 32 is opened.

Here, the lid 31 moves along its plane direction in conjunction with the movement from the first position to the second position.

That is, during the operation in which the cassette holding structure 37 protrudes from inside the deck housing through the opening 32, the drive lever 42
A pin 36 to which the tip of the pin 36 is pivoted moves inside the second guide portion 39 to the opposite side.

For this reason, the legs 34 of the lid 31 supporting the moving pin 36 also follow, so the lid 31 moves from the first position (closed position) to the second position (opened position) while moving along its plane direction. position).

Therefore, when the lid body 31 moves to the second position, the lid body 31 retreats downwardly from the cassette holding structure 37 to open the end portion of the cassette holding structure 3γ, as shown in FIG. You can pick it up by placing your fingers on both sides of the cassette as shown.

When the pin 36 is displaced according to the second guide 39 , the pin 35 is also displaced according to the first guide 38 .

Since the first and second guide portions 38 and 39 are formed to be inclined, they have the function of simultaneously bringing the cassette holding structure 37 closer to the lid 31 when the lid 31 is moved along its plane direction. have

Furthermore, since the first and second guide portions 38 and 39 have different inclination angles, when the cassette holding structure 37 approaches the lid 31, they become almost parallel to the lid 37, making it easy to take in and take out the cassette. It will be an advantageous situation.

Here, the operation of the pins 35, 36 and guide portions 38, 39 between the cassette holding structure 37 and the lid 31 as described above will be explained.

First, the operation of moving the cassette holding structure 37 from the closed position shown in FIG. 4 to the open position shown in FIG. 5 will be described with reference to FIG. 7.

However, FIG. 7 schematically shows the pins 35 and 36 and the guide portions 3B and 39.

That is, when the cassette holding structure 37 is moved in the opening direction, the pins 35 and 36 are respectively moved in the arrow directions in FIG.

At this time, considering the pin 35 as a reference, when the pin 35 is moved along the guide part 38, if the guide part 39 is parallel to the guide part 38 as shown by line 1 in FIG. The pins 35 and 36 move parallel to each other and reach points A and B in FIG. 7, respectively.

However, since the pin 36 is actually moved along the guide portion 39 and the distance between both pins 35 and 36 is constant, the position where the pin 36 satisfies these two conditions is
6 reaches point C in FIG.

Therefore, when the pin 35 is moved by a horizontal distance α in FIG. 7, the pin 36 is moved by a horizontal distance β shorter than the distance α.

That is, conversely, while the pin 36 is moved by a distance β, the pin 35 is moved by a distance α.

Therefore, as shown in FIG.
When the cassette holding structure 37 reaches the open position, the cassette holding structure 37 is controlled to be substantially parallel to the lid 31.

Next, the operation of moving the cassette holding structure 37 from the open position shown in FIG. 5 to the closed position shown in FIG. 4 will be described with reference to FIG. 8.

That is, when the user presses the lid body 31 with a finger or the like so that the cassette holding structure 37 is moved in the closing direction, the pin 35
．． 36 are moved in the directions of the arrows in FIG.

At this time, considering the pin 36 as a reference, when the pin 36 is moved along the guide part 39, if the guide part 38 is parallel to the guide part 39 as shown by the line 11 in FIG. The pins 35 and 36 move parallel to each other and reach the midpoint and point E in FIG. 8, respectively.

However, in reality, the pin 35 is moved along the guide portion 38 and the distance between both pins 35 and 36 is constant, so the position where the pin 35 satisfies these two conditions is
5 reaches point F in FIG.

Therefore, when the pin 36 is moved by a horizontal distance α in FIG. 8, the pin 35 is moved by a horizontal distance β which is longer than the above distance.

For this reason, as shown in FIG.
When the cassette holding structure 37 reaches the closed position, the cassette holding structure 37 is controlled to be tilted with respect to the lid 31.

In this case, the force F with which the pin 35 moves the guide portion 38 in the direction of the arrow in FIG. 8 is as shown in FIG. 9, where P is the force with which the pin 35 presses the guide portion 38 upward in FIG. , where μ: is the coefficient of friction between the pin 35 and the guide portion 38.

Therefore, when the following conditions are satisfied, the pin 35 is slid along the guide portion 38.

Moreover, at this time, as shown in FIG. 10, the distance X between the shaft 41 and the pin 36 is as follows.

Here, when the user attempts to return the lid 31 to the first position by pushing the lid 31 with a finger or the like at the second position shown in FIG. When the drive lever 42 is rotated counterclockwise in FIG. 5, the drive lever 42 is rotated counterclockwise in FIG. 5 about the shaft 43.

Therefore, when the pins 35 and 36 are moved upward in the figure along the guide parts 38 and 39, and the lid 31 is moved along its surface direction and reaches the first position shown in FIG. , and is returned to the position where the deck opening 32 is closed.

That is, when the user wants to return the lid 31 to the first position, the user can simply push the lid 31 with his or her finger in the direction that rotates the cassette holding structure 37, and the lid 31 cannot be moved in the plane direction. Since this is done automatically, it is extremely easy to handle.

As described above, when the lid body that closes and opens the opening of the deck case is in a position that sufficiently closes the opening, when it is opened, the lid body itself moves along its plane direction and closes the opening further. Since the opening can be widened, the operability of taking out the cassette or loading the cassette from the cassette holding structure located inside the lid body is greatly improved compared to the conventional one.

Therefore, the present invention can also be applied to a cassette upright type tape deck in which the exposed tape portion is inserted deep into the cassette holding structure.

Furthermore, the present invention allows the opening angle of the lid to be made smaller than in the past, so the tension of the drive spring for opening the lid is small, and the force required to close the lid is small, making the operation light and easy. Since it can be closed, the support mechanism and receiver of the lid body do not apply excessive force to the stopper member, and are effective in protecting the member.

Further, according to the present invention, although the cassette holding structure moves together with the lid, when it is protruding outside the deck housing, it is close to the inside of the lid, and when it is housed inside the deck housing, the lid is tilted away from the cassette holding structure. Since the tape drive mechanism can be engaged with the tape drive mechanism in the deck at a certain position, it is effective in stably connecting the tape drive mechanism and the cassette, especially in a front-operated tape deck.

[Brief explanation of drawings]

1 and 2 are side views showing a conventional tape recorder cassette storage device, FIG. 3 is an external perspective view showing an example of a tape deck embodying the present invention, and FIGS. 4 and 5 are views showing a conventional tape recorder cassette storage device. FIG. 6 is a side view showing one embodiment of such a cassette storage device, showing the lid in a closed state and an open state, respectively.
, a plan view taken along the line 6-6 in FIG. 5 in the direction of the arrow, and FIGS. 7 to 10 are explanatory diagrams for explaining the opening and closing operations of the lid body of the same embodiment, respectively. 30... Housing, 31... Lid body, 32.
... Deck opening, 37 ... Cassette holding structure, 38 ... First guide section, 39 ...
...Second guide section, 40...Substrate, 42...
...Drive lever.

Claims (1)

[Claims] 1. An opening provided in a part of the casing, a lid having a size that can close the opening, and a first position provided within the casing to close the lid with respect to the opening. and a first support mechanism movably supported between the opening and second positions, a cassette holding structure supported by the first support mechanism and movable together with the lid body, and a side surface of the cassette holding structure or a second support mechanism including first and second guide portions having different mutual inclination angles, which are provided on the ancillary member and support the lid movably along the plane direction; A cassette tape recorder comprising: a drive mechanism that is engaged with the second support mechanism in association with at least one of the second guide parts and urges the lid body and the cassette holding structure.