JPS6041007Y2 - Cassette mounting mechanism in tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette mounting mechanism in a tape recorder.

The purpose of this is to place the cassette on the slider that protrudes from the main body along with the table, and push the table to the rear so that the cassette enters the rear and descends into the cassette drive mechanism. To provide a cassette mounting mechanism that allows a cassette device to be installed smoothly.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 designates the front panel of the cassette deck main body, which includes a slider 2 on which the cassette A is attached by a leaf spring 2a, and a regulating/moving means located on the lower surface of the slider 2 and movable relative to the slider 2. table 3 as
An opening 1a is provided so that both can be projected, and an opening 1b from which the eject lever 4 projects is also provided at the lower right of the opening 1a when viewed from the front.

On the other hand, inside the cassette deck main body, side plates 6 and 6' are attached to the lower panel 5.
A shaft 7 is fitted between the rear parts of the shafts 7 and 6', and the rear end of the holder 8 is pivoted to the shaft 7. As a result, the holder 8 can be rotated vertically around the shaft 7. It becomes.

Further, the table 3 has no bottom other than the bottom 3a of the protruding portion from the front panel 1 when the table 3 is protruding.
Side pieces 3b and 3b' extend rearward from both sides of the bottom 3a, and at the rear, guide portions 3bt and 3b't' that guide guide rollers 9 and 9' on both sides of the holder 8 are L-shaped. It is bent, and in the center there is a recess 3b2, 3E)2' into which the rollers 9,9' descend, and at the rear end a pulley 10,10' is pivotally supported, and an L-shape is formed. A leaf spring 11.11' of the shape is attached.

In front of the side pieces 3b, 3b', the side plates 6,
L-shaped guide portions 6a, 6a bent on the upper surface of 6′
A guide roller 12.12' guided by ' is pivoted.

The slider 2 described above has a hole 2b1 into which the reel pin is inserted, a notch 2b3 in which the cassette position regulating pin and the pinch roller are located, and a buffer rubber 13, 13' of the table 3 in the mounting part 2b of the cassette A. The upright pieces 2b4, 2b, and ′ for regulating the cassette position that collide with each other are violently attacked.

On both rear sides of the slider 2, guide pieces 2c, 2c', 2d, and 2d' are bent inward to be guided by guide portions 8a and 8a' on both sides of the lower part of the holder 8.

Reference numeral 14 denotes a string whose both ends are fixed to the lower part of the guide pieces 2d and 2d' at the rear end of the slider 2 via springs 26 and 26'. It is attached to.

The holder 8 is equipped with a plurality of adjustment protrusions 8b for adjusting the effective length of the string 14, and after the string 14 is hooked on the hooks 8c and 8C', one of the hooks 8
Hook the string 14 from c onto one of the adjustment protrusions 8b,
By hooking on the central projection 8d, the central portion of the string 14 becomes fixed.

In order to change the effective length of the string 14, it is sufficient to change the hooking position on the adjustment protrusion 8b.

15.15' is a string for providing a cushioning effect when the table 3 protrudes forward, and one end of this string 15, 15' is attached to the leaf spring 11.11' at the rear end of the side pieces 3b, 3b' of the table 3. The damper pulley 16.16' is fixed to the side plate 6.6', and the other end is connected to the side plate 3.
b, 3b' is fixed to the central protrusion 17.17'.

18.18' (one 18 is not shown) is a spring installed between the table 3 and the slider 2, and the slider 2 receives a tensile force against the table 3 by this spring 18.18'. .

The eject lever 4 described above is slidably guided in the front and rear direction by pins 19 and 20 on one of the side plates 6 and 6', and a spring 21 is mounted between the pin 19 and the one pin 19. It is always given an extraordinary force.

At the rear end of the eject lever 4, there is a pressing portion 4a which is bent into an upwardly sloped shape.

Reference numeral 22 denotes a lever whose lower end is pivotally supported by one side plate 6 and whose upper end is given a counterclockwise rotational force in FIG. A lower shaft 25 of the link lever 24 is pivotally supported.

Therefore, one of the guide rollers 9 has a spring 23
As a result, the other guide roller 9' is also influenced by this and is in a state of being pressed by the other guide part 3b1'.

Note that the pressing portion 4a of the eject lever 4 is connected to the lower shaft 2.
It is facing 5.

The curved pieces 8e and 8e' on both front sides of the holder 8 are for pressing the cassette A inserted by the slider 2 on the lower surface thereof, and below the curved pieces 8e and 8e' is a cassette drive mechanism whose entire body is tilted forward. Section B is located here.

3b3t 31) 3' is a regulating piece that comes into contact with the damper pulley 16, 16' and restricts the protruding state when the table 3 completes its protrusion, and is bent at both rear ends of the table 3.

Next, the operation in the above configuration will be explained.

1 to 3 show a state in which both the slider 2 and the table 3 protrude forward from the front panel 1 (standby state), and at this time, the cassette A is attached to the cassette mounting portion 2b of the slider 2.
When the cassette A is installed by hand, the cassette A is attached to the plate spring 2a, the front upright pieces 2b4-2b4', the side upright pieces 2, and the cassette A.
', and the hole 2b19 is positioned in a normal state with respect to the notch 21) 2.2b3.

In this state, if you push the front of table 3 towards the back,
The pulley 10.10' at the rear end also moves rearward, so that the string 14 is stretched rearward, so that this string 1
4, the slider 2 to which the cassette A is attached is also pulled rearward and moved.

At this time, the string 14 extending backward from the shaft 7 is connected to the pulley 10.
Since the upper and lower portions of each pulley 10' are extended at the same time, the slider 2 is moved backwards by a distance twice the travel length of the pulley 10.10', that is, the travel distance of the table 3. The slider 2 moves backward at twice the speed at which the table 3 is pushed into the front panel 1.

At this time, the springs 26, 26', 18, 18' act to apply tension to the string 14.

During this time, the table 3 is guided by the guide rollers 12, 12' against the side plates 6, 6', and the table 3 is guided by the guide rollers 9, 9'
is also guided to the holder 8 by the string 15.
15' is also guided relative to the damper pulley 16.16'.

Although the strings 15 and 15' are used as dampers, they do not function when the cassette A is inserted into the back.

That is, at the time of insertion, a tensile force is applied to the portion of the string 15.15' between the tamper pulley 16.16' and the leaf spring 11.11', so that the leaf spring 11.11'
is bent, so the part of the string 15.15' between the protrusion 17.17' and the damper roller 16.16' becomes loose, so that the string 15.15' does not bite into the damper roller 16.16' but slides. become.

Therefore, the force required to push the table 3 is small.

On the other hand, as described above, the slider 2 moves toward the back at double speed with respect to the table 3, but before it starts moving, only the pair of guide pieces 2d and 2d' are connected to the guide portion 8a of the holder 8.
When the movement is completed, the other pair of guide pieces 2c and 2c' are also guided by the guide portions 8a and $a', and the rear part of the slider 2 enters into the holder 8.

As described above, when the table 3 moves to the back, the recess 3b2. 3t) a' is now located below the guide rollers 9 and 9', and at this time, one of the guide rollers 9 is pulled downward by the spring 23, so those guide rollers 9 and 9' are Recessed portion 3b
It will fall within 2=3bz'.

Therefore, the holder 8 comes to rotate downward about the shaft 7 as a fulcrum.

At this time, the table 3 is completely pushed into the front panel 1, and the slider 2, which has moved at double speed, has its cassette mounting portion 2b completely separated from the bottom 3a of the table 3.
It will be in a state where it has moved further back.

Therefore, as described above, the guide rollers 9, 9' are connected to the recess 3b.
2t 3b2', the slider 2 is only guided by its guide piece 2ct 2c't 2dv 2d' by the guide portion 8av8a' of the holder 8, so the slider 2 rotates downward together with the holder 8. Begins to move.

Therefore, the cassette A mounted on the cassette mounting portion 2b of the slider 2 is maintained in a state where it is assembled into the cassette drive mechanism B while being pushed by the curved portions 8 and 3e' of the holder 8, and then By driving the , playback or recording becomes possible.

FIGS. 4 to 6 show the above state. Next, in order to take out the cassette A assembled into the cassette drive mechanism section B as described above, the eject lever 4 is pushed.

As a result, the eject lever 4 is guided by the pins 19 and 20 and moves to the back against the tensile force of the spring 21, and the pressing portion 4a at the rear end pushes the lower shaft 25 to the back.

Therefore, the guide roller 9 is pushed upward from the recess 31) 2 via the link lever 24, and as a result, the other guide roller 9' also rises together with the holder 8, and both guide rollers 9.9 ' is the recessed part 3b2, 3b2
′ becomes unlatched.

By the way, since springs 18 and 18' (one 18 is not shown) are suspended between the table 3 and the slider 2, which provide a tensile force between them, the table 3 in a free state In the case of the slider 2, first the slider 2 moves forward with respect to the table 3, and then the string 14 is pulled forward by this forward movement of the slider 2, so that the pulley 10.10' is pulled forward. As a result, table 3 also moves forward.

In other words, the slider 2 moves at a speed equal to 2 of the forward movement speed of the table 3.
It moves forward at twice the speed and returns to the state shown in FIGS. 1 to 3.

The cushioning rubber 13, 13' performs a cushioning effect at this time.

In addition, the table 3 has a regulating piece 3 at the rear end b3=3
The protrusion is completed when b3' comes into contact with the damper pulleys 16, 16'.

In addition, since the slider 2 protrudes at twice the speed when returning in this way, even if the cushioning rubber 13 and 13' are provided, the usage image of the product is not very good.This is due to the following. Solved through action.

That is, at the time of this return, at the start of protrusion,
A large tension acts on the string 15.15' between the damper pulley 16.16' and the protrusion 17°17', and the damper pulley 16.16' of the string 15.15' and the leaf spring 11
．． Since the part between 11' and 11' will not loosen, the string 11.
11' bites into the damper pulley 16.16', causing the damper pulley 16.16' to rotate.

Therefore, if rotational resistance is applied to the lever pulleys 16, 16', the return force at the start of return will be canceled out considerably.
Therefore, the table 3 protrudes and moves slowly, and the usability image of the product is extremely good.

Note that this slow movement is caused by the guide rollers 9, 9' being moved by the spring 23 to the guide portion 3b1-3 of the table 3.
Even if the table 3 is pressed and rotated to 3bt', this is done by applying movement resistance to the table 3.

As explained above, in this embodiment, by placing the cassette tape A on the slider 2 and pushing the table 3, the cassette tape A enters the recesses 3b2 and 3 of the table 3.
The cassette tape A is lowered into the drive mechanism section B by the rotation of the holder 8 caused by the lowering of the guide rollers 9 and 9' at b2'.

It should be noted that the present invention is not limited to this embodiment; for example, the holder may be moved to a first position in a standby state and a second position in a performance state, not by rotation but by vertical descent.

Therefore, according to the present invention, when the holder is in the first position, the slider with the cassette attached is moved by the movement of the regulating/moving means to enter the holder, and then the holder is moved together with the slider to the second position. The holder is held in the playing state by the holding means, the holding state of the holder is released by the releasing means, the holder is moved together with the slider to the first position, and then the slider is moved by the drive source in the direction of protruding from the holder. Since the cassette mounting mechanism according to the present invention is designed to return to its original position together with the regulating/moving means, the cassette can take three positions together with the slider: its mounting position, the first position, and the second position. The cassette can be loaded into the playing position without applying direct force to the cassette.

This eliminates the occurrence of resistance due to contact friction between the cassette outer wall and the guide caused by a slight mismatch between the loading direction and the direction of the applied force when a force is applied to the cassette for loading. The cassette can be loaded smoothly with little force.

[Brief explanation of drawings]

Figure 1 is a plan view of the tape recorder mechanism before the cassette tape enters, Figure 2 is its side view, Figure 3 is a sectional view taken along the line ■-■ in Figure 1, and Figure 4 is after the cassette tape is inserted. FIG. 5 is a plan view of the tape recorder mechanism in this state, FIG. 5 is a side view thereof, and FIG. 6 is a sectional view taken along the line VI--VI in FIG. 4. A...Cassette, B...Cassette drive mechanism section, 1...Front panel, la, lb...
...Opening, 2...Slider, 2a...
...Plate spring, 2b...Cassette mounting part, 2c
t 2C't 2 d, 2d'...Guide piece, 3...Table, 3a...Bottom,
3b, 3b'...Side piece, 3b1, 3b□'...
...Guide part, 3b2. 3~'...Concavity, 4...Eject lever, 4a...
Pressing part, 5... Bottom panel, 6, 6'...
...Side plate, 6a, 6a'...Guide part, 7...
...Axis, butt...Holder, 8a, 8a'.
...Guide part, 8b...Adjustment protrusion, 8c
, 8C'...Hook part, 8d...Central protrusion, 8et8e'...Curved piece, 9,9'...
...Guide roller, 10.10'...Sliding Ll
l, 11... leaf spring, 12.12'...
・Guide roller, 13°13'...Buffer rubber,
14... String, 15.15'... String, 1
6, 16... Damper pulley, 17, 17'...
...Protrusion, 18'...Spring, 19,
20...Pin, 21...Spring,
22...Lever 23...Spring, 24...Link lever 25...Lower shaft, 26°26'...Spring.

Claims (1)

[Scope of utility model registration request] a holder movable between a first position in a standby state and a second position in a playing state; entry into said holder in a first position in which a cassette can be placed and loaded; and a slider whose protrusion from the slider is guided; a movable table on which the slider is placed and which allows the slider to enter into the holder; Alternatively, while regulating the slider to one of the second positions, a force is applied to move the slider in the direction of advancing into the holder by movement of the table, and the holder into which the slider has entered is moved to the first position together with the slider. a regulating/moving means that allows movement from the position to the second position;
holding means for holding the holder in that position after it has been moved to a second position; releasing means for releasing the holding state of the holder by the holding means and moving the holder from the second position to the first position; a driving source that applies a force to move the slider in the direction of protruding it from the holder when the slider is inserted into the holder at a first position, and a cassette is mounted when the holder is at the first position. The slider is moved by the movement of the regulating/moving means to enter the holder, and then the holder is moved together with the slider to the second position and held in the playing state by the holding means, and the held state of the holder is released from the above-mentioned state. A tape characterized in that the holder is released by a means to move the holder together with the slider to a first position, and then the slider is moved in a direction in which the slider projects from the holder by the drive source and returned to the original position together with the regulating/moving means. A cassette loading mechanism in a recorder.