JP2518176Y2 - Door mechanism of recording medium playback device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reproducing device such as a cassette tape player or a video tape recorder, and more particularly to a door mechanism for opening and closing a recording medium insertion port.

[0002]

7 to 9 show a conventional cassette tape player, FIG. 7 is a front view of a main portion thereof, FIG. 8 is a sectional view taken along line BB of FIG. 7 showing a state immediately before insertion of a cassette, and FIG. FIG. 8 is a sectional view taken along line C-C of FIG. 7 showing a state just before the cassette is inserted.

Reference numeral 21 in the figure denotes various operation buttons 21a to 2
It is a front panel with 1d. The front panel 21 is provided with an insertion opening 21e for inserting and ejecting the cassette 23 containing the magnetic tape 22 therein. Reference numeral 2 in the figure
Reference numeral 4 is a door which is integrally formed with rotary shafts 24a and 24b at both ends thereof and is formed in a flat plate shape from a transparent synthetic resin. The door 24 is rotatably supported by bearings 21f and 21f provided on the back surface of the front panel 21, with the rotation shafts 24a and 24b as support shafts, and the insertion opening 21e.
It is designed to open and close. Further, the door 24 is constantly urged by a spring 25 wound around one rotating shaft 24a in the front side, that is, in the direction of closing the insertion opening 21e, and the cassette tape player 20 of the cassette tape player 20 is inserted from the insertion opening 21e. It is designed to prevent dust and the like from entering the inside.

Further, the door 24 is provided with a display portion 24c composed of various characters or symbols for identifying the product name, the manufacturer, or improving the appearance. The display portion 24c is generally formed by leaving only the character or symbol portion transparent and coloring the other portions by printing or the like. Then, as shown in FIG.
The light from the light source 26 provided inward of the diffuser 2
By illuminating the door 24 via 7, the user can recognize the characters on the display 24c even in a dark place.

A substantially mountain-shaped protrusion 24d is integrally provided on one end side of the front surface of the door 24. This protrusion 24d
Is for preventing the convex portion 23a of the cassette 23 from being caught by the free end of the door 24 when the cassette 23 is ejected and the cassette 23 not being ejected. This protrusion 24
Only the top of d contacts the cassette 23.

However, in the cassette tape player 20 described above, when the cassette 23 is inserted slightly obliquely into the insertion opening 21e of the front panel 21 as shown in FIGS. The thickness of the cassette T
It makes linear contact by the amount of. In a vehicle-mounted cassette tape player, a driver often inserts the cassette 23 without visually checking the insertion opening 21e. Therefore, as shown by the chain double-dashed line in FIG. Two
Frequently, the cassette 23 is moved in the direction of the arrow X while being in contact with the front surface of the cassette 4 to align the cassette 23 with the insertion port 21e. Therefore, a wide range of the front surface of the door 24 is in sliding contact with the corner portion 23b of the cassette 23.

[0007]

As described above, in the conventional cassette tape player 20, each time the cassette 23 is inserted into the insertion opening 21e of the front panel 21, the door 24 is opened.
Since a relatively wide portion of the front surface of the cassette slides in contact with the cassette 23, the front surface of the door 24 is easily scratched, and the appearance of the entire cassette tape player 20 is impaired.

The present invention has been made in view of the above problems, and it is an object of the present invention to prevent a door from being damaged when a cassette containing a recording medium is inserted into an insertion opening of a recording medium reproducing apparatus.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a front panel having an insertion opening into which a cassette containing a recording medium is inserted and removed, and the insertion opening can be opened and closed. In a door mechanism of a recording medium reproducing apparatus having a door opened by insertion, a groove extending in a width smaller than the thickness of the cassette is formed on the front surface of the door.

[0010]

According to the above-mentioned means, since the area of the door which comes into contact with the cassette when the cassette is inserted can be made extremely small, the damage of the door can be effectively suppressed, and the appearance of the entire cassette tape player is impaired. This can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A door mechanism of a recording medium reproducing apparatus according to the present invention will be described below in detail with reference to the drawings. 1 to 4 show an in-vehicle cassette tape player according to an embodiment of the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a front view of a main part thereof, FIG. 3 is an exploded perspective view of a door, and FIG. FIG. 3 is a sectional view taken along the line AA in FIG. 2 showing a state immediately before the cassette is inserted.

Reference numeral 1 in the figure denotes a vehicle-mounted cassette tape player in which a front panel 3 made of synthetic resin is fixed in front of a player main body 2 having a reproducing mechanism (not shown) inside. Above and to the side of the player body 2,
A metal plate is covered with an upper cover 4 formed by bending in a substantially U shape. The front panel 3 includes a display unit 5 including a liquid crystal display element, a volume knob 6, and various operation buttons 7, 7, .... An insertion opening 3a corresponding to the shape of a cassette 10 in which a magnetic tape 8 which is a recording medium is wound inside and the outer periphery is covered with a case 9 made of synthetic resin is formed in the substantially center upper side of the front panel 3. The cassette 10 can be inserted into or ejected from the player body 2 through the insertion opening 3a.

Both side walls of the insertion port 3a of the front panel 3 are extended to the back side of the front panel 3 and form bearing portions 3b, 3b having through holes. These bearings 3b, 3
Rotational shafts 11a and 11b at both ends of a flat plate-shaped door 11 are inserted into the through holes of b, and the door 11 is rotatably supported with respect to the front panel 3 so that the insertion opening 3a is inserted. It is designed to open and close. In addition, the space between both side walls of the insertion opening 3a is approximately the same as the lateral width of the cassette 10, so that the cassette 10 can be inserted and ejected during the insertion and ejection process.
Is regulated to prevent the cassette 10 from being inserted and ejected in a state of being inclined with respect to the insertion opening 3a.

The door 11 is integrally formed of a transparent synthetic resin such as transparent polycarbonate, and has a shape substantially similar to the insertion port 3a of the front panel 3. A spring 12 is wound around one of the rotating shafts 11a of the door 11, and the door 11 is constantly urged by the spring 12 in a direction of closing the insertion opening 3a, so that dust or foreign matter is not trapped in the player main body 2. It is designed to prevent intrusion. Therefore cassette 1
When inserting 0, the cassette 10 is inserted into the insertion opening 3a against the urging force of the spring 12, so that the door 11
Is rotated inward to open the insertion port 3a.

A pin 11k, which extends laterally, is integrally provided in the vicinity of one pivot shaft 11a of the door 11 so as to project therefrom. The player main body 2 is provided with a lever 2a that engages with the pin 11k, so that when the cassette 10 is ejected, the pin 2k is pulled inward by the lever 2a so that the door 11 is forcibly opened. Has become. Further, a substantially mountain-shaped projection 11c is integrally provided on one end side of the front surface of the door 11. This protrusion 11c
Is for preventing the protrusion 9a of the case 9 of the cassette 10 from being caught by the protrusion 11d on the free end side of the door 11 when the cassette 10 is ejected from the player body 2 and hindering the ejection operation of the cassette 10. The size of the protrusion 10 is set so that only the top of the protrusion 11c contacts the cassette 10 when the cassette 10 is inserted and ejected.

In order to identify the product name, the manufacturer, or to improve the appearance, the door 11 is generally provided with a display portion 11e made of various characters or symbols. As a method of forming this display portion 11e, as shown in FIG. 3, first, a non-translucent coating film 13 is formed by printing on the back surface of the door 11 excluding the portion of the display character, and then the back surface corresponds to the display character. The white or milky white light diffusion coating film 14 is formed by printing. The method of forming the display portion 11e is not limited to this, and various modifications can be made.

As shown in FIG. 4, a diffusion plate 15 made of transparent or semitransparent synthetic resin is attached below the door 11. An inclined portion 15a is provided on the upper surface of the diffusion plate 15 so as to be substantially continuous with the lower surface of the insertion opening 3a of the front panel 3, and the end portion of the cassette 10 is inserted into the insertion opening 3a when the cassette 10 is ejected. Abutting the inner bottom of
It is designed to prevent discharge failure. Further, a light source 16 that is turned on in association with a switch of a vehicle light is disposed further inside than the diffusion plate 15. By turning on the light source 16, the light source 16 is directly or diffused.
The back side of the door 11 is indirectly illuminated via 5, and the characters displayed on the display unit 11e can be recognized from the front side of the door 11 even at night.

On the front surface of the door 11, a groove 11f having an arcuate cross section is formed so as to extend in the longitudinal direction of the door 11. Since the width W of the groove 11f is set to be slightly smaller than the thickness T of the cassette 10, the groove 11f is inserted when the cassette 10 is inserted into the insertion opening 3a as shown in FIG.
Does not come into contact with the cassette 10 and prevents the occurrence of scratches in the groove 11f. Therefore, the door 11
The front surface of the vehicle is hardly damaged, and the appearance of the vehicle-mounted cassette tape player 1 is not spoiled. In the process of inserting the cassette 10, the cassette 10 is inserted into the insertion port 3
The posture is regulated by the side wall of a without tilting, and only the projection 11c on the front surface of the door 11 is in sliding contact with the cassette 10. Then, as shown in FIG. 2, the characters displayed on the display portion 11e of the door 11 are changed to the width W of the groove portion 11f.
If it is located inside, the problem that the characters displayed on the display unit 11e are difficult to recognize due to scratches on the front surface of the door 11 is solved.

The shape of the groove 11f of the door 11 is not limited to the above-mentioned arcuate cross section, but may be, for example, a groove 11g having a U-shaped cross section as shown in FIG. 5, or as shown in FIG. The upper and lower ridges 11i, 11i on the front of the door 11
Are provided in parallel with each other so that the groove 11h
May be formed. In this case, the same effect can be obtained by setting the dimension W between the protruding portions 11i, 11i to be a value smaller than the thickness T of the cassette 10.

Further, in the above embodiment, the in-vehicle cassette tape player has been described, but a household cassette tape player, a VTR (video tape recorder), a DA.
It goes without saying that even when the present invention is applied to a T (digital audio tape) player, a video disc player using a disc cartridge as a medium, or the like, a remarkable effect is obtained.

[0021]

As described above, according to the door mechanism of the recording medium reproducing apparatus of the present invention, it is possible to open and close the front panel having the insertion opening for inserting and removing the cassette containing the recording medium and the insertion opening. In a recording medium reproducing apparatus having a door opened by insertion of the cassette, a groove portion extending in a width smaller than the thickness of the cassette is formed in the front surface of the door, so that the cassette when the cassette is inserted into the insertion opening. The area of the door in contact with can be made extremely small. Therefore, it is possible to effectively prevent the door from being damaged due to the sliding contact with the cassette, and prevent the appearance of the entire recording medium reproducing apparatus from being impaired.

[Brief description of drawings]

FIG. 1 is a perspective view showing an on-vehicle cassette tape player according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of a vehicle-mounted cassette tape player according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a door of a vehicle-mounted cassette tape player according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2 showing a state immediately before the cassette is inserted.

FIG. 5 is a sectional view showing an essential part of an on-vehicle cassette tape player according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view of an essential part showing a vehicle-mounted cassette tape player according to still another embodiment of the present invention.

FIG. 7 is a front view of a main part of a conventional cassette tape player.

FIG. 8 is a sectional view taken along line BB in FIG. 5 showing a state immediately before the cassette is inserted.

9 is a sectional view taken along line CC of FIG. 5 showing a state immediately before the cassette is inserted.

[Explanation of symbols]

 1 In-vehicle cassette tape player 3 Front panel 3a Insertion port 8 Magnetic tape 10 Cassette 11 Door 11f, 11g, 11h Groove part

Claims (1)

(57) [Scope of utility model registration request] 1. A recording medium reproducing apparatus comprising: a front panel having an insertion opening into which a cassette containing a recording medium is inserted and removed; and a door capable of opening and closing the insertion opening and opening when the cassette is inserted. A door mechanism of a recording medium reproducing apparatus, wherein a groove portion having a width smaller than a thickness of the cassette is formed on a front surface of the door.