JPS63317999A - Door opening and closing device for cassette insertion port in cassette tape recorder - Google Patents

Abstract

PURPOSE:To prevent damage of an internal device by opening a door of a cassette insertion port energized always in the closing direction in interlocking with an eject button operated at cassette ejection. CONSTITUTION:A door 3 opening/closing a loading port 2 is supported freely turnably to a shaft 6 supported in a main body case 1 and energized always in the closing direction of the insertion port 2 by a coil spring 5 supported by the shaft. In loading a cassette 8 to the main body case 1, at first the door 3 closed at all times is pushed and opened by the tip of the cassette 8 to be loaded against the coil spring and the cassette is inserted. When the cassette 8 is inserted up to a prescribed position, the door 3 is released from the cassette 8. In pushing the eject button 4 into the main body case to eject the cassette 8, the ejection mechanism of the cassette 8 is operated, moved in the direction of arrow opposite to that at loading and ejected from the main body case 1. The insertion port 2 of the door 3 is closed by the energizing force of the coil spring 5.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to a cassette car stereo for example, in which a cassette inserted through a cassette insertion slot is moved in a direction perpendicular to the insertion direction. This invention relates to a cassette door opening/closing device for a cassette tape recorder that is set at a lower recording/playback position.

[Conventional technology]

The conventional cassette door opening/closing device of this type of cassette type tape recorder, for example, as described in Japanese Utility Model Publication No. 56-29761, comes into contact with the top surface of the cassette set at the recording or playback position, and opens the cassette door in the open state. After installing the cassette, hold the cassette door in the open state. It was possible to see the installed cassette from the outside.

[Problem that the invention seeks to solve]

The cassette door opening/closing device of a conventional cassette tape recorder is constructed as described above.

No consideration is given to the design of the cassette when it is installed in a tape recorder. For this reason, when the cassette is attached, the cassette door is in a half-open state, and the inside of the door is visible, resulting in a problem of deteriorating the design. In addition, there were other problems such as dirt, debris, etc. entering through the half-open cassette insertion slot and damaging internal equipment.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a cassette door for a cassette-type tape recorder that does not impair the design and prevents damage to the internal mechanism due to entry of dust and debris. The purpose is to provide a switchgear.

[Means for solving problems]

In order to achieve the above object, the present invention is characterized in that the door of the cassette insertion slot, which is always biased in the closing direction, is opened in conjunction with the eject button operated when ejecting the cassette. .

[Effect]

The door of the cassette insertion slot in the present invention is closed except when opened in conjunction with the eject button.
The design of the cassette tape recorder is not damaged, and the internal mechanism is not damaged due to entry of dust or debris. However, malfunction can be reliably prevented by separating the cassette from the internal mechanism and ejecting the cassette after opening the door by operating the eject button.

〔Example〕

The invention will now be described in detail with reference to one drawing. FIG. 1 is an external perspective view showing one embodiment of the present invention. In the figure, reference numeral 1 is a main body case of a cassette type tape recorder, and a cassette 8 is mounted on an escutcheon 7 on the front of the main body case.
An insertion opening 2 is formed.

The door 3 that opens and closes the insertion port 2 is rotatably supported by a shaft 6 supported within the main body case 1, and a coil spring 5 supported by the shaft 6 closes the insertion port 2 at all times. biased in the direction.

The eject button 4 externally protrudes from a hole formed in the escutcheon 7 adjacent to the insertion port 2, and a portion 3α of the door 3 comes into contact with a portion 46 of the eject button 4 within the main body case 1. There is.

Next, the operation of attaching and removing the cassette 8 to and from the main body case 1 will be explained. First, when mounting the cassette 8, as shown in FIG.
Insert the cassette 8 while pushing it open from the position indicated by the two-dot chain line 3' to the position indicated by the solid line 3''.

Then, when the cassette 8 is inserted to a predetermined position, the fourth
As shown in the figure, it is moved in a direction perpendicular to the insertion direction α and set at the recording and playback position. At this time, the door 3 is released from the cassette 8, returns to its original position by the biasing force of the coil spring 5, and closes the insertion port 2, so that a portion 3α of the door 3 comes into contact with a portion 4α of the eject button 4, as shown in FIG. come into contact with

Take out the cassette 8 attached to the main body case 1. 4
- When the eject button 4 is pushed into the main body case, the door 3 in contact with the eject button 4 is also pushed open against the coil spring 5 as shown in FIG.

Furthermore, by pushing the eject button 4, the ejection mechanism (not shown) of the cassette 8 is operated, and the cassette 8 is
As shown in the figure, arrow directions b' and α' are opposite to those when worn.
and is ejected from the main body case 1.

The eject button 4 is restored by an elastic body (not shown) provided in the main body case 1 by releasing the pushing force. Further, by removing the cassette 8 from the insertion port 2, the door 3 is restored to the position indicated by the two-dot chain line 3' in FIG. 3 by the biasing force of the coil spring 5, and the insertion port 2 is closed.

In the above embodiment, the ejecting mechanism for the cassette 8 is activated after the door 3 is opened almost fully using the eject button 4, but the ejecting mechanism can also be activated even when the door 3 is partially open. It is.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the eject button is operated at all times in conjunction with the eject button operated when ejecting the cassette.
Since the cassette insertion slot door is configured to open when it is biased in the closing direction, the insertion slot can be kept closed at all times except when loading or unloading a cassette, making the door effective as a unique element. The design of the cassette tape recorder can be improved by utilizing this feature. Furthermore, it is extremely effective in reliably preventing damage to the internal mechanism due to entry of dust and debris and extending the life of the internal mechanism. Furthermore, by operating the eject button, the insertion slot door opens and the installed cassette is ejected, which has the effect of preventing double insertion of cassettes and preventing inconveniences caused by double insertion. Ru.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a tape recorder having a door opening/closing device according to an embodiment of the present invention, Fig. 2 is a front view showing the door of the insertion slot, and Figs. 3 and 4 explain the cassette loading operation. Figure 1 is a cross-sectional view taken along the line ■-■, Figures 5 to 7
The figures are diagrams for explaining the cassette ejecting operation, and FIGS. 5 and 6 are cross-sectional views taken along the line v--■ in FIG. 1, and FIG. 7 is a cross-sectional view taken along the line NR-NI in FIG. It is a front view. 2...Cassette insertion slot 3...
・・・・・・・・・Door 4・・・・・・Press/Eject button 8・・・・・・・・・Cassette agent Patent attorney Katsuo Ogawa・7・Additional 1 mouth□ Figure 5 Mistake diagram ・ 8 ・ Figure ■

Claims (3)

[Claims] (1) In a cassette tape recorder in which a cassette inserted through a cassette insertion slot is moved in a direction perpendicular to the insertion direction and set at a recording/playback position below the cassette insertion slot, the cassette insertion slot is always kept in the closing direction. 1. A door opening/closing device for a cassette insertion slot in a cassette type tape recorder, comprising: a door energized; and an eject button that opens the door by an eject operation in conjunction with the door. (2) The cassette type tape recorder according to claim (1), wherein the cassette ejecting mechanism is activated after the door of the cassette insertion slot is opened almost fully using an eject button. Door opening/closing device for cassette insertion slot. (3) The cassette tape recorder according to claim 1, wherein the cassette ejecting mechanism is activated when the cassette insertion slot door is left in a half-open state using an eject button. A door opening/closing device for a cassette insertion slot.