JPS5813488Y2 - Opening/closing device for cassette holder etc. in cassette tape recorder - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an opening/closing device for a cassette holder, etc. in a cassette tape recorder.

In a cassette tape recorder, a cassette holder that accommodates a cassette is held openable and closable, and when the cassette holder is closed, the cassette stored inside is loaded in a playable manner, while when an eject button is pressed, the cassette holder is opened. It is known that the cassette can be taken out.

This type of conventional opening/closing device is configured such that when an eject button is pressed, the cassette holder is opened by the force of a spring, and when the cassette holder with residue is pushed against the force of the spring, it is closed. .

However, the conventional switchgear with the above configuration,
If the setting of the biasing force of the spring is not appropriate, for example, if the biasing force is too strong, the opening operation of the cassette holder will be sudden and cause a shock, while the closing operation of the cassette holder will require a large force, resulting in a poor operational feeling. This may cause problems such as not being able to open the cassette holder, and also causing problems such as not being able to open the cassette holder if the urging force is weak.

In view of the above-mentioned circumstances, this invention provides an opening/closing device such as a cassette holder for a cassette tape recorder that can adjust the opening speed of the object to be opened and closed, and provides a good operational feeling when the object is closed. The object to be opened and closed, such as a cassette holder, is configured to be opened by an urging tool, one end of the urging tool is connected to a holding lever of the object to be opened and closed, or a member interlocked with this lever, and the object to be opened and closed, such as a cassette holder, is opened by an urging tool. One end of the string is connected to the other end of the forceps, the other end or the middle part of the string is wound around the member, and the number of windings of the string around the member is changed. This makes it possible to vary the biasing force of the biasing tool.

An embodiment of this invention will be described below with reference to FIGS. 1 to 5.

In the figure, reference numeral 1 denotes an eject lever, and a substantially dogleg-shaped acting part 1b is connected to the lower part of the operating part 1a, and the lower end of the operating part 1a is rotatably attached to a fixing pin 2.

The fixing pin 2 is implanted in a mounting plate 3 provided within the device, and other fixing pins to be described later are similarly implanted in the mounting plate 3.

The bent portion of the acting portion 1b of the eject lever 1 includes
The lower end of the link 4 is rotatably attached via a pin 5, and the upper end of this link 4 is attached to the outside of the distal end of the arm I, whose base end is rotatably attached to the fixed pin 6. It is rotatably attached via the bin 8.

A roller 11 is attached to the inside of the distal end of the arm 7, and is movable to a lower surface 9a of a lever 9, which will be described later. A pressing member 13 is attached to the lever 9 so as to come into contact with the rear end of a protruding edge 12 provided on the lower edge of the lever 9 so that the protruding edge 12 can be freely pushed.

The roller 11 is rotatably attached to a pin 14 provided coaxially with the pin 8 inside the tip of the arm I, and the pressing member 13 is fixed to the upper part of the base end of the arm I with a screw 15.

The lever 9 is slidably fitted into the fixed bin 17 through a long hole 16 formed in its longitudinal direction, and the tip of the first holding lever 19 holds a cassette holder 18 which is an object to be opened and closed. It is rotatably attached to a predetermined upper part via a bottle 20.

The first holding lever 19 is formed in a dogleg shape, and its bent portion is rotatably attached to a fixing pin 21, and a pin 22 implanted at its tip is formed on the upper side of the cassette holder 18. The guide groove 23 is slidably fitted into the guide groove 23.

In addition, a pin 24 is implanted in a predetermined upper part of the first holding lever 19, and this pin 24 is inserted into a long hole 26 formed in a second holding lever 25 that holds the cassette holder 18. They are slidably fitted.

The second holding lever 25 has an upper end rotatably attached to the fixed bin 27 and a lower end rotatably attached to the lower end of the cassette holder 18 via the bin 28.

The tip of the arm I and the first holding lever 19
A coil spring 30 is stretched between the lower end portion of the coil spring 30 and the lower end portion of the coil spring 30 via a string body 29.

That is, the lower end of the coil spring 30 is hooked to a pin 31 installed at the lower end of the first holding lever 19, and one end 29a of the string 29 is attached to the upper end of the coil spring 30.
is tied up.

The string 29 further has its middle portion wrapped around a pulley 31 disposed above the lever 9, and the other end 29b of the rod-shaped portion attached to the tip of the arm 7 wrapped around a member 32. The other end 29b is tied to a protrusion 33 formed in the middle of the arc I.

In this case, the length of the string 29 is appropriately set so that the coil spring 30 is in a predetermined tension state.
The clockwise biasing force applied to the first holding lever 19 and the counterclockwise biasing force applied to the arm I are caused by the string 29
The number of windings on the member 32 can be changed by changing the number of windings.

Thus, the biasing force of the coil spring 30 gives the roller 11 the ability to press against the lower surface 9a of the lever 9, and gives the cassette holder 18 the ability to open.

button, the pulley 31 is a fixed shaft 3 implanted in the mounting plate 3.
It is rotatably supported at the tip of 4.

Further, a lever 36 biased clockwise by a spring 35 is attached to the base end of the fixed shaft 34, and a pinion that engages with a rack 37 formed on the upper surface of the lever 9 is attached to the tip of the lever 36. 38 and a gear 39 that meshes with this pinion 38 are attached, and when the lever 9 is moved, the pinion 38 and the gear 39 are
rotates, and at this time, the movement of the lever 9 is cushioned by the rotational resistance of the pinion 38 and gear 39.

In addition, in the figure, 40 is a cassette housed in the cassette holder 18, and 41 is a latch claw arranged so as to engage and fix the cassette 40 when the cassette holder 18 is closed.

Next, the operation of the embodiment configured as above will be explained.

FIG. 1 shows the cassette holder 18 in an open state, and when loading the cassette 40 from this state, the cassette 40 is housed in the cassette holder 18 and the cassette holder 18 is moved backward (toward the left in FIG. 1). ), the first holding lever 19 is rotated counterclockwise against the force of the coil spring 30, and accordingly, the first holding lever 19
The bottle 24 slides in the elongated hole 26 and the second holding lever 2
5 in the clockwise direction, and at the same time, the lever 9 attached to the pin 20 of the holding lever 19 rotates the fixed bottle 1 in the elongated hole 16.
Guided by 7, move to the rear.

As the lever 9 moves backward, the roller 11 attached to the arm 7 rolls on the lower surface 9a of the lever 9, and eventually engages with the retaining portion 10.

At this time, the rear end of the protruding edge 12 of the lever 9 comes into pressure contact with a suppressing member 13 attached to the base end of the arm 7.

When the roller 11 engages with the engaging portion 10, the cassette holder 18 is closed as shown in FIG. 2, and the cassette 40 is engaged with the latch claw 41, fixed and loaded for play.

In this state, the lever 9 is prevented from moving forward because the engaging portion 10 is engaged with the roller 11, and the first holding lever 19 connected to the lever 9 is also rotated by the force of the coil spring 30. It is restrained in that position without being moved, and thus the cassette holder 18 is restrained in the closed position.

In addition, in order to open the cassette holder 18 and take out the cassette 40 from the closed state shown in FIG. When the eject lever 1 is rotated counterclockwise, the link 4 is lowered, the arm 7 is rotated clockwise against the force of the coil spring 30, and the roller 11 is moved to the engaging portion 1 of the lever 9.
It deviates from 0.

On the other hand, the pressing member 13 strongly presses the rear end of the protruding edge 12 of the lever 9 as the arm 7 rotates, and the roller 11 and the engaging portion 10
When the engagement with the lever 9 is released, push the lever 9 forward,
An initial turning force is applied to the first holding lever 19 in the clockwise direction.

As a result, the first holding lever 19 pushes the cassette holder 18 forward, and the cassette 40 and the latch claw 41 are disengaged.

Continuing with this operation, the first holding lever 19 is rotated clockwise by the coil spring 30, thereby opening the cassette holder 18 as shown in FIG. 1, thus making it possible to take out the cassette 40. Become.

However, in the above-mentioned cassette holder opening/closing operation, if the opening speed of the cassette holder 18 is not appropriate or if the operation feeling when the cassette holder 18 is closed is not good,
By adjusting the force applied by the coil spring 30 to the first holding lever 19, these can be set to appropriate states.

That is, if the number of windings of the string 29 around the member 32 is changed, the tensile force of the coil spring 30 will change.
This allows the force applied by the coil spring 30 to the first holding lever 19 to be adjusted.

In the above embodiment, the object to be opened and closed is a cassette holder, but the object is not limited to this, and may be any of various lids provided on a cassette tape recorder.

As is clear from the above description, according to this invention, a string is connected to an urging device that urges an object to be opened and closed, such as a cassette holder, and the string is wound around a member. By changing the number of body wraps, the force of the attachment can be changed, so the force of the attachment can be changed with a simple configuration, and by this change the force of the attachment can be changed. Effects such as being able to appropriately set the speed and obtaining a good operational feeling when the object to be opened and closed is closed can be obtained.

[Brief explanation of drawings]

Figure 1 is a side view of an embodiment of this invention, with the cassette holder open, Figure 2 is a side view of the cassette holder closed, and Figure 3 is a side view of the cassette holder closed. 4th partially cutaway plan view with some parts omitted in the state where the
The figure is a partially cutaway plan view with the same part omitted, and FIG. 5 is an explanatory view showing the attached state of the string in the same embodiment. I...Arm, 9...Lever, 18.
...Cassette holder, 19...First holding lever 129...String body, 30...Coil spring, 32...Wrap is a member.

Claims (1)

[Scope of utility model registration request] The object to be opened and closed, such as a cassette holder, is configured to be opened by an urging tool, one end of the urging tool is connected to a holding lever of the object to be opened and closed or a member that is linked to this lever, and the other end of the urging tool is One end of the string is connected to the string, the other end or the middle portion of the string is wound around the member, and the string is wound around the member, and the number of windings of the string around the member is changed. An opening/closing device for a cassette holder or the like for a cassette tape recorder, which is capable of varying the applied force of the cassette holder.