JPS6131405Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the opening/closing mechanism of the cassette lid of a cassette tape recorder having a so-called "stop and eject mechanism" which can perform stop and eject operations almost simultaneously with one touch. It is. To be more specific, the present invention provides a tape recorder in which mechanism control is performed using a plunger, in which a cassette lid is ejected during recording, playback, fast forwarding, rewinding, etc., by the operation of the plunger. When performing the above operation, in response to a slight operating stroke of the ejector rod, firstly, in order to convert one of the operating modes to the stop mode, a reset switch for disabling the plunger is controlled, and then It is designed to open the cassette lid in response to further operating strokes of the eject rod. One embodiment will be described in detail below with reference to the drawings. Reference numeral 1 denotes an eject rod, and a convex piece 2 that protrudes in the forward direction of the ejector 1 is extended from one corner of the tip. Reference numeral 3 denotes a tension spring that is stretched between the eject rod 1 and the base body 4 and is biased so as to cause the eject rod 1 to move backward in the right direction in the figure. Reference numeral 5 denotes a mechanical reset switch, which is turned on when the upper pressure receiving surface 6 is pressed by the convex piece 2 according to a slight forward stroke of the eject rod 1. 7
is a holder for the reset switch 5, etc., and is formed of a U-shaped metal plate with one side of the eject rod open, and is fixed to the base 4 by a mounting piece 8 bent horizontally at the lower rear surface. Ru. Reference numeral 9 denotes a shaft installed in the holder 7, and a lock lever 1 which will be described later.
0 and the energizing lever 11 are loosely fitted so as to be swingable.
Reference numeral 10 denotes a U-shaped lock lever which is open in one direction of the eject rod 1 and is inserted into the holder 7. In FIG. A piece 13 extends toward the distal end of the eject rod 1, and an engaging piece 15 is extended downwardly from the lower part to be engaged with one end of a tension spring 14 stretched between the holder 7 and the holder 7. The other vertical wing 16 of the lock lever 10 is formed with an engaging piece 17 extending rightward, and at the tip of the engaging piece 17 is an inclined side 18 that is inclined diagonally downward to the left. Slope side 1
A hook-shaped piece 19 is formed at the lower end of 8 and projects at an acute angle. Reference numeral 11 denotes a current-carrying lever which is inserted into the lock lever 10 with one side of the eject rod open and the upper end of the vertical wing 20 in the front in FIG. The bent portion 21 is provided so as to come into contact with the pressure receiving surface 6 of the reset switch 5 when rotated clockwise. Further, the vertical wing 20 is biased leftward by a tension spring 22 so as to rotate counterclockwise. An energizing piece 24 extending rightward is formed on the other vertical wing 23 of the energizing lever 11 , and the upper side of the energizing piece 24 is inclined diagonally downward and to the right. Also, approximately in the center of the upper side,
A portion of the lock lever 10 that corresponds to the hook-shaped piece 19 is horizontal or inclined slightly diagonally upward to the right. A holding arm 25 is used to swingably hold the cassette lid 26 relative to the base 4, and is always biased clockwise by a torsion spring 28 attached to a swing shaft 27 at the bottom. A fixing pin 29 for fixing the cassette lid 26 is installed laterally on the upper left side of the outer surface of the holding arm 25, and when the cassette lid 26 is closed, the fixing pin 29 locks the lock lever. 10 hook-shaped pieces 19 and the current-carrying piece 24 of the current-carrying lever 11 . The above is the configuration of the present invention, and its operation will be explained in detail below. In FIG. 5, when the eject rod 1 is pushed forward against the tension spring 3, the convex piece 2 protruding from the tip of the eject rod 1 first presses the pressure receiving surface 6 of the reset switch 5 . When the reset switch 5 is energized, the operating mechanism in the plunger is reset (for example, transferred from a playback or recording state to a stop state). When the eject rod 1 is further pressed and moved forward, the tip of the eject rod 1 comes into contact with the pressure receiving piece 13 of the lock lever 10 , as shown in FIG .
0 rotates counterclockwise against the lower tension spring 14. Therefore, the hook-shaped piece 19 of the lock lever 10 releases the fixing pin 29 of the holding arm 25, so that the cassette lid body 26 is rotated clockwise by the stress of the torsion spring 28 attached to the holding arm, and the cassette lid is rotated clockwise. The body 26 will open. Next, as shown in FIG. 7, when the cassette lid 26 is opened, the fixing pin 29 also escapes at the same time, so that the energizing piece 2 of the energizing lever 11
4 loses its grip and rotates counterclockwise due to the stress of the tension spring 22. As mentioned above, the upper bent portion 21 of the energizing lever 11 presses the pressure receiving surface 6 of the reset switch 5 , and the reset switch 5
becomes energized. However, at this time, the reset switch 5 is already energized by the eject rod 1, so instead of being energized again,
This means that the pressure receiving surface 6 is pressed by both the eject rod 1 and the energizing lever 11 . Second
In the figure, the cassette lid 26 is opened and the eject rod 1 is opened.
When the pressure on the eject rod 1 is released, the eject rod 1 retreats to its original position due to the stress of the tension spring 10 stretched above the eject rod 1, and the pressure receiving surface 6 of the reset switch 5
is released from the pressure from the eject rod 1, but is still pressed by the energizing lever 11 while the cassette lid body 26 is open.
Power is maintained. Next, install a new cassette (not shown), and then close the cassette lid 2 again.
6 is closed, the holding arm 25 moves toward the swing shaft 27.
It rotates counterclockwise against the torsion spring 28 using as a fulcrum. When the holding arm 25 rotates slightly counterclockwise, the fixing pin 2 implanted in the holding arm 25
9 first comes into contact with the inclined side 18 of the lock lever 10 and the upper side of the current-carrying piece 24 of the current-carrying lever 11 , and when it rotates further, the fixing pin 29 pushes the lock lever 10 up along the slope side 18, and the current-carrying piece 24 of the current-carrying lever 11 24, the lock lever 10 rotates slightly counterclockwise against the tension spring 14 using the shaft 9 fixed to the holder 7 as a fulcrum, and the energizing lever 11 Again, the shaft 9 rotates slightly clockwise against the tension spring 22 using the shaft 9 as a fulcrum. When the fixing pin 29 rotates further and the cassette lid body 26 is completely closed, that is, when it returns to its original state, the fixing pin 29 is attached to the hook of the lock lever 10 as shown in FIG. At the same time as being engaged with the shaped piece 19, the energizing lever 11 is raised to the normal position, so that the pressing force on the reset switch 5 is released and the energization is cut off. When the reset switch 5 is de-energized, the mechanism can be put into a standby state for transitioning to a recording/playback state by operation of the plunger. According to the present invention, since the reset switch and the lock mechanism are integrated, there is no need for a separate reset switch in addition to the lock mechanism as in the past, and the structure is simple, and therefore it is inexpensive and highly reliable. A tape recorder that is difficult to break down can be realized.

[Brief explanation of the drawing]

The drawings all show one embodiment of the present invention, and FIG. 1 is a partial perspective view of a tape deck equipped with an embodiment of the present invention, and FIGS. 2, 3, and 4 are side views, respectively. A front view and a plan view are shown, and FIGS. 5 to 7 are side views sequentially showing operating states. DESCRIPTION OF SYMBOLS 1...Eject rod, 5 ...Reset switch, 10 ...Lock lever, 11 ...Electricity lever, 25...Holding arm, 26...Cassette lid body, 2
8...Tension spring.

Claims (1)

[Scope of utility model registration request] In a cassette tape recorder that can perform stop and eject operations simultaneously with a single touch, there is a reset switch with a mechanism that energizes in response to the forward movement of the eject rod, and a holder that holds the cassette lid swingably relative to the base. an arm, a spring that urges the cassette lid to open together with the holding arm, a lock mechanism that releases or holds the holding arm in response to the forward or backward movement of the ejecting rod, and A cassette tape recorder comprising: an energizing lever that energizes the reset switch while the lock mechanism is disengaged from the holding arm.