JPS592980B2 - Cassette tape volume display device in tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape winding amount display device for a cassette in a tape recorder, and its purpose is to display a tape winding amount display device for a cassette which is inserted into the back of the tape recorder equipment and is used for recording and playback. It is an object of the present invention to provide a tape winding amount display device that allows the remaining amount of tape to be confirmed from the outside.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 designates the front panel of the cassette deck body, and 10 there is a slider 2 into which the cassette A is inserted using a leaf spring 2a.
, and located on the bottom surface of the slider 2, and the slider 2
An opening 1a is provided so that both of the table 3, which is movable relative to the table 3, can be projected, and an opening Ib from which the eject lever 4 projects also from the lower right 15 when viewed from the front of the opening 1a. is provided.

On the other hand, inside the cassette deck body, side plates 6 and 6' are attached to the lower panel 5.
, 6' is fitted with a shaft T, and the rear end of the holder 8 is pivoted to the shaft 7 of the shaft 20. As a result, the holder 8 can be rotated vertically about the shaft 7. It's becoming possible.

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, and side pieces 3b and 3b' extend rearward from both sides of the bottom 3a. , guide portions 3b1 and 3b1' guide the guide rollers 9 and 9' on both sides of the holder 8.
is bent into an L-shape, and at the center is a recess 3b into which the rollers 9, 9' descend.

, 3b. ' is formed, and furthermore, at the rear end, a pulley 10 is formed.
, 10' are pivotally supported, and L-shaped leaf springs 11, 1
1' is attached. And side pieces 3b, 3b'
In front of the side plates 6, 6', guide rollers 12, 12' guided by L-shaped guide portions 356a, 6a' formed by bending on the Al surfaces are pivotally supported. In addition, the table 3 is formed with slope-shaped protuberances 3c and 3c' that are inclined so as to be higher in the front direction, and furthermore, a viewing window 3d is formed on the front end surface for looking into the inner part. A transparent member 27 such as glass or a magnifying lens is attached thereto. The slider 2 described above has a hole 2b1 into which the reel pin is inserted, and slope-shaped protuberances 3c, 3 on the table 3 at the attachment part 2b of the force set A.
Notch 2b2 for escaping from c′, and further table 3
Upright pieces 2b4 and 2b4' for regulating the force setting position which collide with the cushioning rubbers 13 and 13' are respectively formed.
On both rear sides of the slider 2, guide pieces 2c, 2c', 2d, and 2d2 are bent inward to be guided by guide portions 8a and 8a' on both sides of the lower part of the holder 8. 14 has springs 26, 26' at both ends.
through the guide pieces 2d, 2d at the rear end of the slider 2.
'A string fastened to the lower part, the center part of which is connected to the pulleys 10, 10.
' and is fixed to the holder 8.

The holder 8 is formed 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 hook portions 8c and 8c', one of the hook portions 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. To change the effective length of the string 14,
It is only necessary to change the hooking position on the adjustment protrusion 8b. 15,15
' is a string that provides a cushioning effect when the table 3 protrudes forward, and these strings 15, 15' are attached to the side pieces 3 of the table 3.
One end of the tongue hub 16 is fixed to the leaf springs 11, 11' at the rear end of b, 3b', and is pivotally supported from there to the side plates 6, 67.
, 16', and the other end is wrapped around the side pieces 3b, 3b'.
It is fixed to the central protrusion 17, 17/.

18 and 18' (one 18 is not shown) are springs installed between the table 3 and the slider 2, and the slider 2 receives a tensile force against the table 3 by these springs 18 and 18'. ing.

The above-mentioned ejector lever 14 is slidably guided in the front and rear direction by pins 19 and 20 on one of the side plates 6 and 6', and is mounted between the side plate 6 and the one pin 19. The spring 21 normally provides a protruding force. And, at the rear end of this ejector lever 14,
A pressing portion 4a is formed which is bent into an upwardly sloped shape. '22 is a lever whose lower end is pivoted to one side plate 6 and whose upper end is given a counterclockwise rotational force in FIG. 2 by a spring 23.
In addition, the lower shaft 2 of the link lever 24 of one guide roller 9
5 is pivoted.

Therefore, one of the guide rollers 9 has a spring 23
As a result, the other card roller 9' is also influenced by this and is in a state of being pressed against the other guide part 3b/. Note that the pressing portion 4a of the ejector lever 4 faces the lower shaft 25. The curved pieces 8e and 8e' on both front sides of the holder 8 are for pressing the force set A inserted by the slider 2 on the lower surface thereof.
A force setting drive mechanism section B, whose entire body is inclined forward, is located below it.

Reference numerals 3b3 and 3b3' are regulating pieces that come into contact with the tongue hubs 16 and 16' to restrict the protruding state when the table 3 completes its protrusion, and are bent at both rear ends of the table 3.

28 is a mirror attached to the holder 8, and the force set A sent by the slider 2 is transferred to the force set 1 drive mechanism section B.
The table 3 is mounted in a forwardly inclined state so that the tape winding state of the force set A can be visually seen from the front of the table 3 when the table 3 is mounted on the table 3.

The tape winding section of force set A is illuminated by a light source 29 fixed to the lower panel 5. Next, the operation in the above configuration will be explained.

1 to 3 show the state in which both the slider 2 and the table 3 protrude forward from the front panel 1. At this time, when the force set A is attached by hand to the force set attachment part 2b of the slider 2, the force Set A includes a leaf spring 2a and a front upright piece 2b.
4 and 2b4', and the upright pieces 2b5 and 2b5' on the sides, and is positioned with respect to the hole 2b1 with the front end slightly lifted by the slope-like protuberances 3c and 3c'. In this state, if the front of the table 3 is pushed inward, the pulleys 10 and 10' at the rear end will also move backward, and the string 1 will move backward.
4 is stretched rearward, and the slider 2 to which the force set A is attached is also pulled and moved rearward by the string 14.

At this time, the string 14 extending backward from the shaft 7 is connected to the pulley 10,
Since the underground part of 10 hot springs will grow at the same time,
The slider 2 is now moved backwards by a distance twice the travel distance of the pulleys 10, 10', that is, the travel distance of the table 3, and thus the slider 2 pushes the table 3 against the front panel 1. You will now move backwards at twice the speed.

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 guide rollers 12, 12' against the side plates 6, 6', guided by guide rollers 9, 9' against the holder 8, and further guided by the strings 15, 15'. Therefore, Tanhab-January 6, 16' will also be guided. String 1
5 and 15/ are for dampers, but do not exhibit that effect when force set A is inserted into the inner part.

That is, when inserted, bow tension is applied to the part of the string 15, 157 from the tongue hub 16, 16' to between the leaf springs 11, 1V, and therefore the leaf springs 11, 11
As the strings 15, 151 are bent, the portions between the protrusions 17, 17' and the damper rollers 16, 16' are loosened, and therefore the strings 15, 15' do not bite into the damper rollers 16, 16' and slide. It becomes like this. 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 relative to the table 3, but before it starts moving, a pair of guide pieces 2d, 2d! Only the slider 2 is guided by the guide parts 8a, 8a' of the holder 8, and when the movement is completed, the other pair of guide pieces 2c, 2c' are also guided by the guide parts 8a, 8a', and the rear part of the slider 2 is guided by the guide parts 8a, 8a' of the holder 8. begins to enter inside.

As described above, when the table 3 moves to the back, the recesses 3b2 and 3b22 are located below the guide rollers 9 and 9/, and at this time, one of the guide rollers 9 is moved downward by the spring 23. Since the guide rollers 9 and 9' are pulled by the concave portion 3b2,
, 3b2'. Therefore, the holder 8 comes to rotate downward about the shaft 7 as a fulcrum. At this time, the table 3 has been completely pushed into the front panel 1, and the slider 2, which has moved at double speed, is in a state where its force setting adhesive part 2b has completely separated from the bottom 3a of the table 3 and has moved further back. becomes.

Therefore, as described above, the guide rollers 9, 9' are in the recess 3b.
2, 3b2', the slider 2 is only guided by its guide pieces 2c, 2c', 2d, 2d' by the guide parts 8a, 8a' of the holder 8, so the slider 2 is It comes to rotate downward together with the holder 8.

Therefore, the force set A attached to the force set attachment part 2b of the slider 2 is maintained in a state where it is incorporated in the force set drive mechanism B while being pushed by the curved parts 8e, 8e' of the holder 8, and thereafter By driving the drive mechanism B, playback or recording becomes possible.

FIGS. 4 to 6 show the above state. At this time, to check the amount of tape wrapped in force set A, look through the transparent member 27 of the viewing window 3d of the table 3.The amount of tape illuminated by the light source 29 will be reflected by the mirror 28, so the amount of tape wrapped in force set A can be checked. It becomes easy to confirm the amount. Next, in order to take out the force set A incorporated in the force set drive mechanism section B as described above, the ejector lever 4 is pushed. As a result, the ejector 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 3b2 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' The locking in the recesses 3b2 and 3b2' becomes released. By the way, springs 18 and 1 are provided between the table 3 and the slider 2 to provide a tensile force between them.
8' (one 18 is not shown) is suspended, so
With the table 3 and slider 2 in a free state, first the slider 2 moves forward with respect to the table 3, and then the string 14 is pulled forward by the forward movement of the slider 2, and the pulley 10 , 10' are pulled forward, and the table 3 also begins to move 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 buffer rubbers 13, 13' provide a buffering effect at this time. In addition, the table 3 has regulating pieces 3b3 and 3b3 at the rear end.
The protrusion is completed when the tongue hub 16, 16' comes into contact with the tongue hub 16, 16'. Note that when returning like this, slider 2
Even if the cushioning rubbers 13 and 13' are provided, the usage image of the product is not very good because of the fact that it protrudes at twice the speed.However, this problem can be solved by the following operation.

That is, at the time of this return, at the start of protrusion,
A large tension acts on the strings 15, 15' between the tongue hubs 16, 16' and the protrusions 17, 17', and the damper pulleys 16, 16' of the strings 15, 15' and the leaf spring 11
, 11' will not loosen, so the string 11,
1V bites into the tongue hub 16, 16' and rotates the tongue hub 16, 16'.

Therefore, if rotational resistance is applied to this tongue hub 6, 16', the return force at the start of return will be considerably offset, and therefore the table 3 will protrude and move slowly, giving a very good usability image of the product. becomes.

Note that this slow movement is caused by the guide rollers 9, 9' being moved by the springs 23 to the guide portions 3b1, 3b of the table 3.
This is also accomplished by applying movement resistance to the table 3 by pressing and rotating b1'. The force set A on the slider 2 that has protruded as described above will climb onto the slope-like protuberances 3c and 3c' of the table 3 at the end of the protrusion, so by placing your hand on the front side of the force set A,
It can be easily removed.

As described above, according to the present invention, a reciprocating table is provided with a reciprocating slider that moves relative to the table at double speed in the same direction through the opening in the front panel,
A force set is attached to the front part of the slider pulled out together with the table to the front of the front panel through the opening, and by pushing the table, the force set and the slider are placed on standby above the force set drive mechanism. a tape recorder in which the force set is transferred into a holder and then lowered by the holder to engage the force set with the force set drive mechanism; A mirror is provided to reflect the tape winding portion of the power set forward, and a light source is provided at a fixed position above the holder to illuminate the tape winding portion of the power set. When the holder is in the lowered position, a viewing window is formed through which the reflective surface of the mirror can be viewed, so that the amount of tape remaining in the tape recorder when recording or playing is performed while it is inserted into the back of the tape recorder. This can be confirmed not by the light that passes through the tape roll, but by the image of the tape roll that is reflected on a mirror viewed through the viewing window at the front end of the table.

The light source is provided at a fixed position above the holder on the same side as the mirror, rather than on the opposite side, and there is no need to provide any extra opening or viewing window on the panel surface, and the mirror provided on the holder Since the amount of protrusion is kept to a minimum, the initial purpose can be fully achieved without increasing the size of the device.

[Brief explanation of drawings]

Figure 1 is a plan view of the tape recorder mechanism before the force setting 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 force setting tape is entered. FIG. 5 is a plan view of the base structure of the tape recorder in this state, FIG. 5 is a side view thereof, and FIG. 6 is a sectional view taken along the line -- in FIG. 4. A...Force set, B...Force set drive mechanism section 1...Front panel, 1a, 1b...
...Opening, 2...Slider, 2a...
・Plate spring, 2b...Force set attachment part, 2C, 2
C', 2d, 2dt...Guide piece, 3...
・Table, 3a...Bottom, 3b, 3bt...
...Side piece, 3b1, 3b1'...Guide part, 3
b2, 3b2'... recess, 3C, 3Ct...
... Slope-shaped protuberance, 4 ... Ejector lever, 4a ... Pressing part, 5 ... Bottom panel, 6, 6t ... Side plate, 6a, 6a'・・・・・・
Guide part, 7... shaft, 8... holder, 8a, 8a'... guide part, 8b...
・Adjustment protrusion, 8c, 8c'...Hook part, 8d・
...Central protrusion, 8e, 8et...Curved piece,
9,9t...Guide roller, 10,10t...
...Pulley, 11,1V...Plate spring, 12,12
'...Guide roller, 13, 13'...
・Buffer rubber, 14, 15, 15t...String, 16,
16'... Damper pulley, 17, 17t...
...Protrusion, 18'...Spring, 19,20
...Pin, 21 ...Spring, 22
...Lever, 23 ...Spring, 2
4...Link lever, 25...Lower shaft, 2
6, 26'...Spring, 27...
Transparent member, 28... mirror, 29... light source.

Claims (1)

[Claims] 1. A reciprocating table is provided with a reciprocating slider that moves relative to the table at double speed in the same direction through an opening in the front panel, and the slider is pulled out along with the table to the front of the front panel through the opening. A cassette is mounted on the front part of the cassette, and by pushing the table, the cassette and the slider are transferred into a holder waiting above the cassette drive mechanism, and then lowered by the holder to remove the cassette. In a tape recorder that engages with the cassette drive mechanism, the holder is provided with a mirror that reflects forward the tape winding portion of the cassette that is engaged with the cassette drive mechanism when the holder is lowered, and a mirror is provided above the holder. A tape recorder comprising a light source that illuminates the tape winding portion of the cassette at a fixed position, and a viewing window formed at the front end of the table through which the reflective surface of the mirror can be viewed when the holder is in the lowered position. cassette tape volume display device.