JPH0411230Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a tape running direction display device that is most suitable for application to an auto-reverse machine of a cassette-type recording/playback device such as a cassette-type tape recorder. be.

[Summary of the idea]

The present invention is an auto-reversing system for cassette-type tape recorders, etc., which has a cassette holder and a cassette lid that can be opened and closed between an open position where a cassette is inserted and removed and a closed position where the inserted cassette is placed in a recording/playback position. In the tape running direction display device in the machine, a marker that displays the tape running direction of normal tape running and reverse running is attached to the openable/closable cassette holder or cassette lid, and the tape running direction is displayed on the cassette lid. By displaying the marker, it is possible to save space, and even though the marker is attached to the cassette holder or cassette lid side that can be opened and closed, when the cassette holder and cassette lid are closed to the closed position, By providing a simple shaft joint that can reliably make the marker phase follow the phase of the marker drive member attached to the main body of the recording/reproducing device, the solid line of the tape can be adjusted every time the cassette holder and cassette lid are opened and closed. This makes it possible to prevent inconveniences such as discrepancies between the running direction and the indication of the tape running direction by the marker.

[Conventional technology]

Conventionally, an auto-reversing machine for a cassette-type tape recorder has a cassette holder and a cassette lid that can be opened and closed between an open position where a cassette is inserted and removed and a closed position where the inserted cassette is placed in a recording/playback position. It has been considered that the running direction of the tape during normal running and reverse running is indicated by markers.

Conventionally, the marker is attached to the tape recorder body instead of the cassette lid, and the marker is constantly connected to the marker drive member attached to the tape recorder body, and the marker driven by the marker drive member drives the tape. The tape running direction was displayed on the front panel of the recorder body, next to the cassette lid.

[Problem that the invention attempts to solve]

According to such a conventional structure, it is sufficient to keep the marker and the marker driving member connected at all times regardless of whether the cassette holder and the cassette lid are opened or closed. There is no need to separate or connect each component, and the structure is extremely simple. However, on the other hand, the tape running direction could not be displayed using markers within the area of the cassette lid, which could be opened and closed, making it impossible to save space and making the tape recorder larger. .

According to the present invention, a marker is attached to a cassette holder or a cassette lid that can be opened and closed so that the direction of tape running can be displayed within the area of the cassette lid that can be opened and closed.

Therefore, when a marker is attached to a cassette holder or cassette lid that can be opened and closed, when the cassette holder and cassette lid are opened and closed, the marker is separated from or connected to the marker drive member attached to the tape recorder body. Moreover, the separation prevents the marker from remembering the direction of tape travel. Therefore, in particular, when the cassette holder and the cassette lid are opened to the open position, the tape running mode is always switched to the normal mode (returning). When the marker is opened to the open position and then closed again to the closed position, the phase of the marker can no longer be dependent on the phase of the marker driving member, and the actual tape running mode and the indication of the tape running direction by the marker may differ. A new inconvenience occurs in that discrepancies (such as the marker displaying reverse running even though the actual tape running mode is normal mode) occur.

Therefore, in the present invention, even though the marker is attached to the cassette holder or cassette lid side which can be opened and closed, when the cassette holder and cassette lid are closed to the closed position, the phase of the marker is attached to the main body of the recording/reproducing device. The marker driving member can be reliably made to depend on the phase of the marker driving member.

[Means for solving problems]

The present invention includes a cassette holder and a cassette lid that can be opened and closed between an open position where a cassette is inserted and removed and a closed position where the inserted cassette is placed in a recording/playback position, and a cassette holder or cassette lid that is rotatable. It has a marker attached to the cassette lid for selectively displaying normal running and reverse running of the tape on two display sections provided on the cassette lid, and a marker drive member rotatably attached to the main body of the recording/reproducing apparatus. A removable shaft joint is provided, which is composed of a fitting hole that connects the ends of the rotating shaft of the marker and the rotating shaft of the marker drive member so that they are on the same axis, and a shaft end that is fitted into the fitting hole, and the cassette holder and the cassette are connected to each other. The rotating shaft of the marker is inserted into and removed from the rotating shaft of the marker driving member at the shaft coupling portion when the lid is opened and closed between the open position and the closed position, and the fitting hole of the shaft coupling and the tip of the shaft By configuring the shearing surface shape in a non-circular shape such as an oval shape, when the cassette holder and cassette lid are closed to the closed position and the rotation axis of the marker is connected to the rotation axis of the marker drive member, the phase of the marker is It is configured to be dependent on the phase of the driving member.

[Effect]

The present invention can display the running direction of the tape using a marker within the area of a cassette lid that can be opened and closed. Moreover, when the cassette holder and cassette lid are once opened to the open position and then closed again to the closed position, the phase of the marker can be reliably made to follow the phase of the marker driving member, so that the cassette holder and cassette lid can be opened and closed. At the same time, inconveniences such as a discrepancy between the tape running mode indicated by the solid line and the tape running direction indicated by the marker do not occur.

〔Example〕

An embodiment in which the present invention is applied to an auto-reverse machine for a cassette tape recorder will be described below with reference to the drawings.

First, FIGS. 6 and 7 show the entire tape recorder. On the top of a horizontal chassis 12 that constitutes the upper surface 1a of the tape recorder main body 1, there are a pair of left and right reel stands 2a, 2b, and a capstan 3a. , 3b, holder mounts 4a, 4b, etc. are attached, and a plurality of operation buttons 5 for mode switching, cassette ejecting, etc. are attached to the front surface 1b. A cassette holder 6 is attached to the holder mounting bases 4a and 4b via a pair of left and right fulcrum pins 13 so as to be rotatable in the directions of arrows a and b, and a pair of left and right cassette lids 7 are attached to the upper side of the cassette holder 6. It is attached via a pin 14 of. A magnetic head 8, a pair of left and right pinch rollers 9a and 9b, etc. are attached to the cassette holder 6.

Then, with the cassette holder 6 and the cassette lid 7 opened in the direction of the arrow a to the open position shown by the solid line, the cassette 10, which is a compact cassette, is inserted obliquely into the cassette holder 6 from the direction of the arrow c. After inserting the magnetic head 8 and pinch rollers 9a and 9b into the front opening (not shown), the cassette holder 6 and the cassette lid 7 are inserted.
When the cassette 10 is closed in the direction of the arrow b to the closed position shown by the chain line, the cassette 10 is installed at a recording/reproducing position installed on the reel stands 2a, 2b, capstans 3a, 3b, etc. The cassette lid 7 is locked in the closed position by a locking mechanism (not shown). After installing this cassette, press the play (record) button. A magnetic tape (not shown) in the cassette 10 is selectively pressed against the capstans 3a, 3b by pinch rollers 9a, 9b, and the reel stands 2a, 2b are selectively driven to press the magnetic tape ( (not shown) is subjected to normal running and subsequent reverse running, and the magnetic head 8 performs desired reproduction (recording). When the eject button is pressed after recording (playback), the cassette lid 7 is unlocked in the closed position, so the cassette holder 6 and the cassette lid 7 are opened in the direction of arrow a to the open position, and the cassette 10 is removed from the cassette holder. It can be pulled out from inside 6 in the direction of arrow b.

As shown in FIG. 6, the cassette lid 7 is provided with a transparent window 15 formed in a substantially diagonal shape, and at one end of the transparent window 15 there is an opaque normal running display section 16 and a reverse running display section. A portion 17 is provided, and display holes (through holes) 18 and 19 are further provided in both display portions 16 and 17.

Next, a tape running direction display device will be explained with reference to FIGS. 1 to 6.

First, as shown in FIGS. 1 to 4, marker 2
1 is a rotating plate 2 that is approximately L-shaped at the upper end of a rotating shaft 22.
3 is integrally molded, and this rotary plate 23
A pair of circular marks 24 and 25 colored green or the like are provided at intervals on the upper surface 23a, and the upper surface 23a is colored black or the like. The marker 21 is rotatably attached by its rotating shaft 22 to a bearing 26 provided perpendicularly to one end 6a of the cassette holder 6 (see FIG. 6). Cassette holding plate 27 at one end 6a of holder 6
and the cassette lid 7 and located below both the display sections 16 and 17.
In figure B, it is configured to be rotatable in the directions of arrows e and f.

The marker drive member 30 has a rotary arm 32 integrally molded on the lower end of a rotary shaft 31, and is connected to one holder mounting base 4a (the sixth
The rotary arm 32 is rotatably mounted through a bearing 33 provided vertically in the chassis 12 (see figure), and the rotary arm 32 is inserted into a lower position of the chassis 12.

The two rotating shafts 22 and 31 are arranged to face each other from above and below.
A shaft joint 34 that connects the ends of the rotating shaft 31 on the same axis is constituted by a fitting hole 35 provided at the upper end of the rotating shaft 31 and a shaft tip 36 that is the lower end of the rotating shaft 22. As shown in FIGS. 5A and 5B, the sheared surface shape of the fitting hole 35 and the shaft tip 36 is formed into an oval shape as shown in the embodiment, or a non-circular shape such as a hexagon, square, or D shape. Furthermore, 2nd B
As shown in the figure, tapers 35a and 36a are formed at the end portions of the fitting hole 35 and the shaft tip 36 for guiding these into each other and fitting them.

Next, as shown in FIG. 4, at the lower position of the chassis 12 in the tape recorder main body 1, there are normal and reverse switching mechanisms (not shown).
A reverse switching slider (hereinafter simply referred to as an N-R switching slider) 38 is mounted so as to be movable in the directions of arrows g and h. The N-R switching slider 38 is selectively controlled to move in the directions of arrows g and h between the normal position _N1 shown by the solid line in FIG. 4 and the reverse position _R1 shown by the chain line in FIG. Selective pressure control of pinch rollers 9a and 9b with respect to 3a and 3b, and reel stand 2
By selectively controlling the drives a and 2b, the running direction of the magnetic tape is selectively switched between normal running and reverse running.

and the rotating arm 32 of the marker driving member 30.
A pin 39 provided at the bottom of the tip of the marker drive member 30 is driven by the N-R switching slider 38, and the marker drive member 30 moves between the normal position _N2 shown by the solid line in FIG. 4 and the reverse position R shown by the chain line in FIG. ₂ and is configured to be rotated in the directions of arrows e and f.

The N-R switching slider 38 is slid by pressing a slider 42 of a mode detection switch 41 consisting of a slide switch alternately in the directions of arrows g and h using a pair of spring pieces 40a and 40b integrally molded thereon. and switch. The mode detection switch 41 is configured to detect whether the current (actual) magnetic tape running mode of the tape recorder is a normal mode or a reverse mode.

Further, in this tape recorder, when the cassette holder 6 and cassette lid 7 are opened from the closed position shown by the chain line in FIG. 7 to the open position shown by the solid line, this is detected by an open position detection switch (not shown). This is compared with the mode detected by the mode detection switch 41, and a normal drive priority mechanism (not shown) is activated. That is, when the magnetic tape running mode is reverse mode, the cassette holder 6
and when the cassette lid 7 is opened to the open position, N-R
The switching slider 38 is controlled to move in the direction of the arrow h from the reverse position R ₁ indicated by the chain line to the normal position N ₁ indicated by the solid line in FIG. .

Note that when the magnetic tape running mode is the normal mode and the cassette holder 6 and cassette lid 7 are opened, the mode detected by the mode detection switch 41 is the normal mode.
The normal driving priority mechanism does not work.

The tape running direction switching mechanism is constructed as described above. First, as shown in FIGS. 1 and 2A, when the cassette holder 6 and cassette lid 7 are opened to the open position in the direction of arrow a, the marker The shaft tip 36 of the rotating shaft 22 of No. 21 is pulled out above the fitting hole 35 of the rotating shaft 31 of the marker drive member 30, and the shaft coupling 34 is in a separated state.

Next, as shown in FIG. 2B, when the cassette holder 6 and the cassette lid 7 are closed in the direction of arrow b to the closed position, the shaft tip 36 of the rotating shaft 22 of the marker 21 is closed.
is the fitting hole 3 of the rotating shaft 31 of the marker driving member 30
The shaft joint 34 is fitted into the shaft joint 5 from above and connects both the rotating shafts 22 and 31 so that they are coaxial.

At this time, since the sheared surface shape between the fitting hole 35 of the shaft joint 34 and the shaft tip 36 is formed into a non-circular shape such as an oval shape, the rotation shaft 22 of the marker 21 is aligned with the rotation shaft 31 of the marker drive member 30. When connected to
The phase of the marker 21 can be reliably made to depend on the phase of the marker driving member 30.

That is, as described above, at the moment when the cassette holder 6 and the cassette lid 7 are opened to the open position in the reverse mode, the marker driving member 30 is located at the reverse position _R2 shown by the chain line in FIG. 5A, and in this state. Then, the shaft tip 3 of the rotation shaft 22 of the marker 21
6 is pulled out upward from the fitting hole 35 of the marker driving member 30. However, after this, due to the normal driving priority mechanism, the marker driving member 30 is moved to the fifth position.
It is rotated by an angle θ in the direction of arrow f to the normal position _N2 shown by the solid line in Figure A. Therefore, when the cassette holder 6 and the cassette lid 7 are closed again to the closed position, the marker 2 will move as shown by the solid line in FIG. 5A.
The shaft tip 36 of the first rotating shaft 22 is fitted into the fitting hole 35 of the marker driving member 30 from above with an angle θ shifted. However, when mating, the oval or other non-circular shaft tip 36 is also subordinated to the oval or other non-circular fitting hole 35, and the marker 21 is moved from the reverse position R2 shown by the chain line in FIG. 5B to the _solid line. The marker 21 is rotated by an angle θ in the direction of the arrow f until it reaches the normal position N ₂ shown in FIG. At this time, the shaft tip 36 has a taper 36 inside the fitting hole 35.
a, 35a, and are smoothly guided and fitted.

Next, after the rotating shaft 22 of the marker 21 is connected coaxially with the rotating shaft 31 of the marker driving member 30 as described above, the marker driving member 30 is switched to the fourth position by the N-R switching slider 38. In the figure, there is an arrow e between the normal position _N2 and the reverse position _R2 .
When the marker 21 is rotationally driven in the f direction, the marker 21
It is rotated in the directions of arrows e and f between the normal position shown in Figure A and the reverse position shown in Figure 3B. When the magnetic tape running mode is the normal mode, the cassette lid 7 is opened as shown in FIG. 3A.
The mark 24 of the marker 21 is displayed in the display hole 18 of the normal running display section 16, and when the magnetic tape running mode is reverse mode, the 3rd B
As shown in the figure, a mark 25 of a marker 21 is displayed in the display hole 19 of the reverse travel display section 17 of the cassette lid 7.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of the present invention.

For example, in the embodiment, the marker 21 is rotatably attached to the cassette holder 6, but the cassette lid 7
It can also be rotatably mounted.

Furthermore, the present invention is not limited to cassette-type tape recorders, but can be applied to cassette-type VTRs and other various cassette-type recording and reproducing devices.

[Effect of idea]

According to the present invention, since the tape traveling direction can be displayed using a marker within the area of the cassette lid which can be opened and closed, the cassette type recording and reproducing apparatus can be made smaller by saving space. Furthermore, there is no problem of discrepancies between the actual tape running mode and the tape running direction indicated by the marker each time the cassette holder or cassette lid is opened or closed, and the marker always correctly displays the tape running direction. Therefore, it is extremely reliable. The structure in which the phase of the marker is made to depend on the phase of the marker driving member by means of a removable shaft joint in which the cross-sectional shape of the fitting hole and the shaft tip is configured to have a non-circular shape such as an oval shape is used for the cassette holder and the cassette. It does not interfere with the opening/closing operation of the lid at all, and reliable dependent operation can be expected, and the structure itself is very simple and easy to manufacture.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of the main parts, Fig. 2A and Fig. 2B.
The figure is a sectional view of the main part, Fig. 3A and 3B are a plan view of the main part, Fig. 4 is a plan view of the drive section, Fig. 5A and 5B are a plan view of the shaft coupling, and Fig. 6 is a plan view of the main part. FIG. 7 is an exploded perspective view of the whole. In addition, in the symbols used in the drawings, 1...tape recorder body, 6...cassette holder, 7
...Cassette lid, 16...Normal running display section,
17...Rebus running display section, 18...Display hole,
19...display hole, 21...marker, 22...rotation axis, 24...mark, 25...mark, 30...
... Marker driving member, 31 ... Rotating shaft, 34 ...
Shaft joint, 35...fitting hole, 36...shaft tip.

Claims (1)

[Scope of Claim for Utility Model Registration] A cassette holder and a cassette lid that can be opened and closed between an open position where a cassette is inserted and removed and a closed position where the inserted cassette is installed in a recording/playback position, and a cassette holder or cassette. 2. The cassette lid is rotatably attached to the lid and has normal running and reverse running of the tape.
It has a marker that is selectively displayed on two display sections, and a marker drive member that is rotatably attached to the main body of the recording/reproducing device, and the tips of the rotation axis of the marker and the rotation axis of the marker drive member are aligned on the same axis. A removable shaft joint consisting of a fitting hole that connects to the position and a shaft tip that is fitted into the fitting hole is provided, and the rotation axis of the marker is used when opening and closing the cassette holder and cassette lid between the open and closed positions. The cassette holder is configured so that the marker drive member is inserted into and removed from the rotating shaft at the shaft coupling part, and the sheared surface shape between the fitting hole of the shaft coupling and the tip of the shaft is formed into a non-circular shape such as an oval shape. and a tape running direction display device configured to make the phase of the marker dependent on the phase of the marker driving member when the cassette lid is closed to the closed position and the rotating shaft of the marker is connected to the rotating shaft of the marker driving member.