JPS58150158A - Tape recorder - Google Patents

Abstract

PURPOSE:To realize a simple structure by which a necessary torque can be obtained without changing the power transmitting mechanism entirely, by constituting the structure in such a way that the winding torque transmitted to the main driving gear is directly transmitted to the driven gear through a coupling gear and not through a slipping mechanism. CONSTITUTION:Under the normal CUE mode, a capstan driving motor 8 is acceleratedly rotated in the direction of an arrow (d) (in the normal rotating direction). As the result of this, a swinging lever 124 is swung in the direction shown by an arrow (g) as shown by the solid line by the same motion as in the case of the normal FWD mode, and the lever 124 is engaged with the main driving gear 104 of a reel bed 4 whose intermediate gear 123 which is rotated by a driving gear is at the winding side and drives the main driving gear 104 at a high speed in the direction of an arrow (h). In this way, at this time, the torque of the main driving gear 104 is directly transmitted to a driven gear 103 by means of a coupling gear 111 not through a stripping mechanism and the reel bed 4 which becomes the winding side is rotated at a high speed in the direction of the arrow (h) under a non-slipping condition.

Description

[Detailed Description of the Invention] [Background of the Invention] The present invention is based on, for example, a micro cassette tape recorder [prior art]. Conventionally, when a tape recorder is used to collect debts, a slipping mechanism is always present during the drive path of the tape recorder. FW
In D mode, by driving the reel stand through the slip mechanism, the capstan and pinch roller can prevent the excess tape from slipping.
It is wound with moderate tension (do not pull it too much). In addition, in the FF9CU1% mode, the reel stand is continuously driven in a non-stop manner without using the above-mentioned slip mechanism, and the tape is directly and quickly picked up.

By the way, in the past, the above-mentioned FWD mode, FF and C [
The required torque change in the JIl mode was achieved by completely changing the power transmission mechanism itself, which resulted in a complicated structure and increased cost, and also had the disadvantage of becoming a source of fire.

[Akimei's purpose]

The present invention was invented to correct the above-mentioned defects, and it is possible to obtain the necessary torque for FWD mode, FF, CUE mode, etc. without changing (moving) the power transmission mechanism itself. This is an attempt to provide an extremely simple structure.

[Satisfactory example]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a reversing machine of a micro cassette tape recorder will be explained below with reference to the drawings.

[Configuration explanation]

First, the main configuration will be explained with reference to FIG.

A capstan (2) is installed in the center of the horizontal chassis (1), and a pair of left and right reel stands (31 (47) with cassette position thinner bottles (5) and (6) are installed. (1) Double force set positioning bin (5) (@
) is a leaf spring C'I for holding down the cassette.
) is installed. Also, one end on the chassis (1)
The upper 111K is the capstan drive motor (8) and Corn Troll Ji! 1%-ta (9) is installed. In addition, a pair of left and right sound reproduction heads (hereinafter referred to as brass heads) and an erasing head a (11 each have tape guides A4 to 411, and these are connected to a pair of left and right head bases I [ The pinch roller (to) is installed on the 1l12ID slide 4 [91, and the first slide I[@ is arranged at the bottom of the II2 slide plate @υ. A mode change slider (2) is attached along the lower part of the end where the leaf spring (7) is attached.

J1#1 slide y * (2) is mounted on the chassis (1) parallel to each other, and its first slide I
The second slide [91 is stacked and mounted in parallel on the N plow.The second slide [91] is stacked and mounted in parallel on the top of both left and right ends of the second slide 1 [Ichichin]. ing.

Next, the cassette attachment state will be explained using the second wA.
1 (61) and are installed horizontally, and are held down by the plates (1). At this time, the top of the chassis (1) has a decorative plate placed in parallel. The Microcassette (Incorporated) is attached to the top of the makeup 1gH.On the other hand, the front of the Microcassette (Incorporated)
27m) has a pinch roller insertion II @ in the center, a pair of shunri head insertion*cnea on both the left and right sides, and a pair of erase head insertion windows (to) (to) on both the left and right sides.
are being spoken respectively. And this micro cassette (
By loading the upper Ie of (b), each of the above II@~- is inserted into the front of the pinch row, the upper four, and each head ~ (II).In addition, a pair of left and right reel hubs e4 @sc The fitted nasal tape (hereinafter simply referred to as tape) OI is stored and neglected, and the capstan (2) is inserted inside the tape by the above installation, and both reel hubs (goods) (to) Both are one level (3) < 4)
is engaged with.

Next - First slide @ (2), second slide 4
[Installation of the mouth and both helad bases is based on the structure of the irises.

This will be explained with reference to FIG. 5, 8IO and 9th IO.

First, the slide board (2) of 1/s1 has a square shape, and in the center there is a tournament (-1 row).And this slide board (2) of II1 is The outer periphery of the capstan (2) and both reel stands (8) and (4) are stacked parallel to each other on the chassis (1).
It can be mounted freely in the vertical direction. Nakan C II
The first slide plate (■) has both left and right ends of the capstan (11) engaged with the base of the two-force set positioning pin (514sI) by a pair of guide holes-separation, and is opposite to the capstan (2). The boss ak guide hole for fixing screws of the decorative plate (to) which is attached to the chassis (1) on the side
elk second slide f engaged and occluded by
E- has a horizontal shape, and the slide plate of @1 (2
)'s capstan yang) Confucian upper Ilr: ls3■ are stacked in parallel and attached to the upper and lower Wangang#calWk Qinyan. At this time, the second slide plate Qυ has its left and right ends engaged with the base S of the two-force set positioning pin (5) (61) through a pair of guide holes (2), and the left and right ends of the second slide plate Qυ A pair of guide pins 41a fixed to the lower part
The force is inserted and guided into a pair of guide holes provided in the first slide IIL (2).

Next, the ceramic head base IN Qll al has a symmetrical L-shaped shape, and is superimposed parallel to the upper part of both left and right ends of the second sliding plate Qυ, and slides in the vertical direction with sga.
E number is installed. At this time, both head bases *a fathom II are attached to the decorative plate (to) fixed on the chassis (1).
The guide hole ring is engaged with and guided by a pair of bosses 60a1 on each of the left and right sides of the screw stopper. Therefore head four~
Three plates are stacked on top of each other (on the first slide plate in the case of als), the second slide Ij@1, and both head substrates QI and Ql. The three-layered portion is attached to the chassis (1) and held down by a pair of guide pins 64 inserted through guide holes provided in each of the plates Qυ and -a. And both recording and reproducing heads IQ@1 are both head bases 1
[A] Each of the head adjustment plates F119 is attached to the top of the head via a hook, and both erasing head wheels 1 are constructed of electric nose stone heads. Further, the pinch roller (2) is rotatably pivoted to the upper end of the support shaft mounted on the slide @Ql of the building 2, and is opposed to the capstan.

Slide plate Qυ of first slide 1g, (2), 1s2
And both head substrates Qll ail are attached as described above, and the distance is 11%.

And both head boards as as are their 3rd m1't
The supporting shafts of a pair of guide rollers ff1iυ are respectively pivotally mounted at the bottom of the lower end of I, and from these the
ml, a pair of spring holders Ia, which is provided integrally with the chassis (1) on the lower side, and a pair of spring holders Ia, which are loosely passed between the iris 3, are placed on the lower side (mostly blocking the forward movement side). Confucianism). Note that this w4WI4 guide roller f4 has a long hole l1 formed in the chassis (1).
19- is inserted and extracted below the chassis (1). Also, the first slide l1E(2) is the capstan (
The spring holder integrally provided in the center in the left and right direction at the end opposite to 21 is - and the spring holder is attached to the chassis (1) on the blind side from this point. The hook between the plate (2) and the boss trowel for screw fixing is biased to slide upward in FIG. 3 (in the backward movement direction Im, which will be described later) by the first spring wire passed between the plate (2) and the boss trowel. In addition, a pair of spring receivers ff are integrally provided at both left and right ends of the first slide plate (2).
A pair of second springs σ II are hooked between the υσ axis and a pair of spring receivers aJ shaft, which are integrally provided at both left and right ends of the second slide plate 0I). Spring (to) ffl causes a $12 slide [1υ is 1s1 slide plate-1] In Figure 6, the lower end constitutes a pair of stoppers (-(48aX49m)), and the stopper (481X49m) is Both guide bins @B@η are moved by the force of both springs F9te.
! As a result, the downward sliding of the second slide 1 [Qυ in FIG. 3 with respect to the first slide 1 [4g] is regulated. In addition, a pair of elongated holes Cl'nff barrels are provided in the jars for escape from the springs (c)ae of both paths 2.

Next, the structure of the mode switching slider (hereinafter referred to as slider) @ is shown in Fig. 1 and 5I11. According to FIG. 1011 and FIG. 31st along the bottom of (1)
1 is attached so as to be slidable in the left and right direction, and a rising piece (2, 51) projects from the top of the chassis (1). A rack (2) is fixed to the inner surface of one end of the rising piece (25 m).

On the other hand, the control valve mounted on the upper part of one end of the chassis (1) as shown in front is comprised of a small plus motor and is mounted parallel to the chassis (1). A worm is attached to the motor shaft. And that worm■ is chassis demon 1
) It is exclusively meshed with the worm wheel placed on the input side of the non-interrupting gear transmission mounted on the top. In addition, the non-interrupting gear transmission - the pinion placed in the first collapsing force couple - is decelerated by the forward or reverse rotation of the all control seven-pointer (9), which is engaged with the rack II. Slider (to) via gear transmission mechanism and rack (to)
) is slidably driven to the left or to the right in FIG. At this time, since a worm and a worm wheel are interposed in the transmission path between the control motor (9) and the slider @, the slider example will move to the above-mentioned slid position when the control motor (9) stops. It is configured to be automatically positioned.

By the way, both guide rollers @υ, which are pivotally attached to the ends of the head board (III a9) and centered below the chassis (11), are moved by the force of both springs $4651 to the capstan (21II) of the slider (2). The side surface is pressed against the both reel stands (3) and (4).
The slider (2) is configured to slide in a direction parallel to the side surface of the 1 m connecting the centers of the . At both ends of this side surface, there is a pair of slopes slanted in opposite directions at V45'.
Al- is formed. In addition, a lever a is inserted into the above *iiw* of the one long hole provided in the slider (to).
The top 1m (95m) of aiiw is formed parallel to the above-mentioned Ii-, and a pair of slopes 1i (95bX9
5g) is parallel to the above-mentioned inner slope &I-. And the capstan (21) of the first slide plate (2)
A guide roller is pivotally mounted at the bottom of the opposite end of the chassis.
It is inserted through the notch provided in 1), extended downward Km, and inserted into the recess (E). Note that this guide roller is moved to the top 1ii (
951) is pressed.

Next, the capstan (2) and both reel stands (43
The power transmission mechanism to the 1st @, 5th @, and 11th garden is ll@.

First, if we take a pair of reel stands (33(4)), both reel stands (8) and (4) have the same structure, and the reel center axis (100) is separated from the chassis (1). A reel shaft (101) consisting of a cylindrical shaft on the outer periphery of the reel center shaft (100) is installed.
nr-ii! , tt# At the upper end of the reel shaft (101), a reel shaft head (102) and both gears (105X104) are configured to have the same diameter.

On the other hand, a pair of reel stands (1 m) configured as described above (4's driven gear (103) and main drive gear < 104) are meshed with each other, respectively, and connect these two gears (103 x 104). A combination gear (110 x 111) 161 is used. Both of these coupling gears (110X111) are composed of wide and medium gears, and the #11 slide lj-
KWjHat on the opposite end of Yapstan (21)
It is rotatably pivoted to a pair of support shafts (112 x 113), respectively.

By moving this #11 slide WaS in the 5th direction in the vertical direction, both of these coupling gears (110X111) are engaged with and disengaged from both gears (105XIQ4) of both reel stands (3) and (4). It is configured as follows. In addition, at this time, it is usually referred to as a mysterious gear mechanism and has one gear (103) (
104) is composed of two soft gears with the same diameter and one tooth difference, and among these two gears (103XIQ4), one is operated so as to cause negative rotation and the other one for forward rotation. So, C and both gears (103XIQ4) @ so are sure to overlap somewhere, and C and both gears + (1
0jSX104) Original gear for K (110X111
) is adopted to improve the meshing of the two.

Next, install the power transmission ridge structure between the capstan (2) and both reel stands 13) (4). To be clear, first the capstan (2) is attached to the bearing (115) fixed to the chassis (1) K.
K is rotatably supported by a shaft, and its lower end is exposed below the chassis (1). At the lower end of the capstan (2) at the bottom of the chassis (1) is a flywheel (116).
) is fixed. On the other hand, as mentioned above, the chassis (1)
The motor shaft (117) of the capstan drive motor (8) attached to the upper Ell on one end side is exposed below the chassis (#cl!).The motor shaft (117)
A pulley (118) is fixed to the lower end of the flywheel (118), and a boo is integrally provided on the outer periphery of the flywheel (116). J
(119) is a bell) (120) is hung on the 0th capstan (21 is both reel stands (3)
) (4) They are arranged at evenly spaced positions. A drive gear (121) is fixed to the top 11 of the center of the flywheel (116).

A pair of intermediate gears (122X125) are provided which are always meshed with this drive gear (121). And on the outer periphery of the bearing (115) is a swinging lever with a triangular shape.
124) is attached with a swingable Ic1l, and a pair of support glazes (125X126) K intermediate gear (122X12
M) is attached to the rotatable #C. Both of these Nakazeki gears (122X123) are composed of upper and lower 2R gears. η Drive gear (121) K gear (
127m) is engaged with the main drive gear (104) of the Kojiki reel stand (Jl) (4), and the night gear (127
b) are integrally formed.

Also, these two gears (127aX127b) are connected to the chassis (
1) Pass through the opening (12B) provided in the chassis (
1) are placed above and below.

In addition, 1/l1511ia~Ki711show8re4<, The x9 IDer (2) has the 8TOP position P as the center position, and the normal FWD position P, reverse FWD position Pl, and the reverse FWD position Pl arranged on both sides of the 8TOP position P. Normal cuii placed in the middle of , RIV position and 4 reverse CUN
It is configured to be controlled to move between the I%RIIV positions P and 7 in the direction of the arrow a and the direction of layer width. The movement of the slider (2) at this time is carried out by the forward lI @ and reverse ■ jaw lic of the control motor, but when the slider (c) reaches each of the above positions P, ~P, that position The position of the control motor (91) is detected by a switch (not shown), and the furnace is shut down.

[Operation explanation]

The nine-piece capstan drive motor (8) has the functions of regular rotation of forward rotation or reverse rotation, and speed-up drive of forward rotation or reverse rotation.

(8TOP, FF, RIW mode) The 8TOP% FF, RIW mode is shown in FIG. 3, in which all the members are moved back to the back movement position. At this time, the slider (2) is at the 8TOP position (also the FF, 凰i!W position), and is 11 times above Pl.

Also, both coupling gears (112X115) are connected to the driven gear (1033 and main drive gear (104) of both reel stands (3 bars 4).
It is in the engaged position at i4.

(Normal FWD mode) This normal PWD mode is shown in No. 41, in which the control motor (9) is first driven in forward rotation, and the slider (2) is moved from the 8TOP position P to the normal FWD mode.
It is slid in the direction of the arrow until position 4 and is stopped.

Then, the guide roller is first guided by @HA@ of the slider (2), and one head substrate is moved forward in the direction indicated by the arrow by the spring @. As a result of step C, one of the brass heads is driven on its axis, and both heads are inserted into the two compartments of the micro cassette opened by the 21st HC, and the tape is printed. Each will be contacted. At this time, the 4th long hole ■ of the head base 4
As the end of the upper joint is brought into contact with the boss for positioning, the forward movement position of both heads QQal is determined exactly. Also, during this normal FWD mode, the guide roller is held in place on the side of the slider, so it's perfect! l[411 is not forward moved.

At the same time, the slider's slant K causes the guide roller to move, and through this guide roller, the first slide horizontally moves to the striped 10 sling.
is pulled, and the second slide plate Sa is moved forward in the same direction. As a result, the pinch roller is moved forward, and this pinch roller (end) is inserted into the window 2 of the micro cassette in Fig. 2, and the tape (end) is inserted into the capstan (21).
is crimped. Note that the pinch roller pressing force at this time is obtained by the springs (c) of both paths 2. Also, at this time, the first slide plate (2) was moved forward, so that 1
The secret matching gears (110) (111) are connected to both reel stands (31 (
4) is moved to a separated position relative to the driven gear (103) and the main drive gear (104).

Next is the normal of the above slider (to)? What is the drive to the WD position P2? ``J: At the same time, the capstan movement motor (8)
is driven at a constant speed in one direction of the arrow (forward rotation direction).

Sult belt (120) and flywheel (116)
The capstan (21) is driven at a constant speed in the direction of arrow e through the capstan (2). At this time, the drive gear (121) is also rotationally driven in the direction of arrow C together with the capstan (2), and is constantly meshed with it. The gear between both sides (122X123) is indicated by the arrow f.
Direction M - rotationally driven. However, the driving gear (1
A rotational moment in the direction of arrow g acts on 24), and the lifting lever (124) is lifted in the same direction. As a result, one of the intermediate gears (125) meshes with the main drive gear (104) of the reel stand (4) on the winding side, and the main drive gear (104) is driven 8 times in the direction of the arrow.

Then, the reel stand 4) which is in the ** state is rotated once in the direction of the arrow by the driving gear (104) via the slip mechanism (108).

At the above second stage, the tape inside the Mitaro cassette) was continuously moved in the direction of the arrow, and the head was re-headed.
II. The desired brass blue or regeneration takes place.

(Reverse FWD mode) This reverse FWD mode is exclusively used in the 51st I.
First, the control dose (9) is reversed iii@gm, and the slider (to) is reversed from the OP position P1.
x F W D It is stopped at position P in the direction of arrow a'.

Then, the guide roller is first guided by the diagonal li@ of the slider, and the other head substrate a is moved forward in the direction of the arrow j by the spring. As a result, the other brass reproducing head I and erasing head are moved forward, and both heads QD (1 m long) are inserted into the square window OD (toward) of the micro cassette in Fig. 2 and come into contact with the tape. At this time, by positioning the upper end of the elongated hole of the head base 1 [111] in FIG. Further, during reverse FWD, the guide roller is held as it is on the 111th surface of the slider (toward), so one of the head substrates is not moved forward.

At the same time, a guide roller is guided by the slope m (95G) of the slider, and the first slide plate (2) is moved through the guide roller to the first spring r.
It is moved forward in the direction of arrow C against Io. The same operation as the normal PWDW# suitable for this preparatory process is performed, and the tape (to) in the micro cassette is pressed onto the capstan (2) by the pinch roller (a).

Next is the reverse FWD position P of the slider (to).

Capstan drive motor tortoise 8 to - movement and beam flj#
) is driven at a constant speed in the direction of arrow -' (reverse rotation direction).

Then the belt (120) and flywheel (114)
1, the capstan (2) is driven in the direction of arrow e'. Furthermore, this *g drive gear (121) is also rotationally driven in the direction of arrow e' together with the capstan (21), and the gear between both gears (122X123) that is meshed with it in snow is driven in the direction of arrow f'. However, at this time, the singing gear (121) swung toward the direction of the arrow e', and 14-
(124) acts on the lever (124) once in the direction of arrow g', causing the ms lever (124) to move exclusively in the three directions of pi. As a result, the other intermediate gear (123) meshes with the main drive gear (104) of the reel stand (3), which is in the winding position.

The main drive gear (104) rotates as shown by the arrow h'. Then, the main gear (104) rotates the reel in the direction of the arrow through the slip mechanism (10B). A desired sickle tuning fork is reproduced by the reproducing head 1 by a fixed number of rows in the direction of the arrow i'.

(/-vkCUi!, RiV*-F) These normal CUB and RIAV modes are shown in FIG. 6, and this normal cUB%RB■ mode is transferred from the normal FWD mode of the fourth factor mentioned above.

First, in the normal CUE and RBV modes, the slider (to) is set to the normal FWD position by the control controller (9).
EV At position P4, it is returned to the direction of arrow 1' and stopped.

Then, the guide roller (e) is guided by the slope (95b) of the slider (2), and the slide plate (2) of jllll is moved back in the direction of arrow C' by the first spring blade. At this time, the guide roller is on the top surface (95 bites) of the slider (c)! and its return position is regulated. Then, due to the backward movement of the end of the first slide plate, one guide hole - a part of the stopper, (48a x 49a)
is on both pins @@θ of slide 41 of jllI2 [(2)! ! & In order to touch and push this back, the second slide plate Qυ
is pushed back by the first slide plate (2) and arrow C'
It will be moved back in the direction. As a result, the pinch roller ■ is occupied by the cow Yapsutan (from 21 to a).On the other hand, this normal CUB,
During RIV, one of the head boards is moved to the above-mentioned forward position and held there, and therefore, one of the head boards (QQ) is moved to the position mentioned above when it is in contact with the tape. Retained.

Also, as the first slide plate (2) moves backward in the direction of arrow c' as described above, the secret matching gear (11G) (1
11) is moved to the meshing position, and these secret gears (110x111) are simultaneously meshed with the driven gear (103) and the main drive gear (104) of both the gears (8) and (4), respectively. . As a result, these coupling gears (110X11
1) K therefore 1 & driven gear (103) and main gear (1)
04) are fully bonded, and these become one cillii.

But normal eUi! If it is in the 7th position, the capstan operating motor (in the above state) will be exclusively driven in the direction of the arrow (forward rotation direction). As a result, the normal F
Same operation 1 as in WD? , As shown in Iso, the drive lever (1
24) swings in the direction of the arrow, and the INIWk gear (1
21) One of the intermediate gears (12
3) meshes with the main drive gear (104) of the reel stand (4) on the winding side, and drives this main drive gear (104) to rotate at high speed in the direction of the arrow. Then, at this time, the torque of the main gear (104) does not go through the slip mechanism (108), but is transferred to the driven gear (103) by the WI matching gear (111).
This is directly transmitted, and the reel stand (4), which is the winding force, is continuously driven to rotate in the direction of the arrow in a non-slip state.

-77 In normal AGV mode, the capstan pivot motor (8) increases speed by 1 in the direction of arrow d' (reverse rotation direction).
Driven by rotation. As a result, in the same operation as the reverse FWD # described above, the swing lever (124) swings in the direction of the arrow g' as shown by the imaginary line, and the drive gear (121) K rotates once and drives δ. The gear (122) meshes with the main drive gear (104) of the reel stand (3) on the winding side, and drives the main drive gear (104) to rotate at high speed in the direction of arrow h'. Then, at this time, the main drive gear (104)
The torque is transmitted exclusively to the driven gear (103) by the coupling gear (, 110) in a straight line without going through the slip mechanism (108), and the reel stand (3), which is in a non-slip state, is in a non-slip state. It is driven to rotate at high speed in the h' direction.

As described above, in the normal CUB mode, the tape (to) in the micro cassette (2) in the micro cassette (2) in FIG. Regeneration is performed by the brass head while being watched back by the 1' side meat.

(River I can only transition from.

First, the control motor (9) moves the slider to reverse F.
WD position P, Karari perspective Cυ1, IIV position P, then return to the direction of arrow 1 and stop.

Then, the guide roller is guided by the diagonal 1i C956 of the slider (2), and the first slide I[- is moved only backward in the direction of arrow C'.As a result, the above-mentioned normal cuii , the pinch roller 4 is separated from the capstan (21), and the pinch roller 4 is separated from the capstan (21) and secretly connected. Gears (110X111) are meshed with the driven gear (10M) and main drive gear (104) of both reel stands (31(4)) at P3*, respectively.

In the reverse CUB mode, the capstan drive motor (8) is rotated at an increased speed in the direction of arrow d' (reverse rotation direction) K in the above state, and the above-mentioned normal R11V4
The reel stand (3)
is electrically driven to rotate in the direction of arrow h' in a non-slip state. If the reverse hmv mode is set, the capstan drive motor (8) is rotated at an increased speed in the direction of arrow d (direction of forward rotation), and through the same imaginary transmission path as in the normal CUB 7 mode described above, The reel stand (4) is in a non-slip state and is subjected to a high speed 't'aIim in the direction of the arrow.

(FF, RnW mode,) This Fl, RnW peak mode is 8TOP 7-do and reed M1 in Fig. 6, and in the state of C, the capstan kaken 7-ta (
8) is driven at increased speed by forward rotation or reverse rotation as described above. Therefore, the reel stand (4; or (3) is selectively non-slip with the same operation as in the case of one drive in the normal CU1, R11V4 described above. In this case, the tape is fast-forwarded or only the winding stem is driven.

By the way, in the above-mentioned example, when setting # to the FWD mode that was previously blocked, the first slide plate (
2) in the direction of arrow C against the first spring axis, the slide ll7L(2) of that jll
Then, move the second slide plate aυ in the direction of the arrow G:J through the spring ll1s- of the inner link 2.

During the forward movement of the first slide I, a pinch roller is applied to the spring n4Ill of the inner link 2 to press the capstan (2) K. And from this FWD mode, the aforementioned CUB (cue), ordinary mv (review)
When entering the mode, the 111 shows the 1st
By moving the slide 4 [-] back in the direction of the arrow ' by the spring shaft of the first slide plate, both guide holes @ part of the stopper (481 x 49 m
) to the force of both guide pins @41 of the second slide IEIII, and push back the second slide plate Qυ in the direction of arrow C' with the slide plate ■ of jll to make it move back, It is connected to the pinch roller gloss and capstan (2). Therefore, PWD%-do to CL)E%RB
When shifting to the V mode, a force is exerted in a direction in which both the first spring shaft and the spring as rle of the inner link 2 are weakened, and the operating force at that time can be extremely light. Note that this is FF%R11 from FWD mode.
The same applies to the case of switching to the iV mode.

In addition, in the embodiment described above, in conjunction with the pinch roller 4 being pressed against and separated from the capstan (2),
Put the secret matching gear (110X111) on both reel stands (3) (4
) was used as an interlocking mechanism to control the movement of the driven gear (103) and the main gear (104) to the connecting position and the meshing position. An interlocking mechanism such as a link mechanism or the like may be used to interlock the two.

Furthermore, in the embodiments described above, the capstan (2) was used as the drive shaft of the drive gear (121), but a drive shaft was provided separately from the capstan (21), and the drive gear (121) was attached to the drive shaft.
121) is rotated, and its drive shaft is arranged at equal intervals from both reel stands (3) and (4), and the drive shaft drives a pair of capstans. If configured, for example, a dual capstan type compact cassette type tape recorder reverse machine can be used.
aai is coming.

Next, FIG. 14 shows a type II example of the pinch roller crimping mechanism for the capstan (2) k. In this case, a pair of guide holes provided in the first slide y*tis are shown. The first one is a soar fan IIk configuration. With this configuration, when the pinch roller (to) is crimped to the capstan (2) during the above-mentioned normal rWDii) (indicated by 夷-) or reverse FWD (indicated by a phantom line), the capstan (2) – Use the pinch roller as much as possible (
The center 01 of 7) can be slightly shifted in one direction or in the direction of the arrow 0 with respect to the centers 〇 and E of the capstan (2). Then, if you shift the center 〇 of the pinch roller (2) with the number ζ with respect to the capstan (center 02 of the parent), the tape (to) against the pinch roller (to)
The wrapping angle of the tape is such that the tape can be driven extremely reliably in the direction of the arrow or the direction of the arrow.

〔Effect of the invention〕

As described above, the present invention provides a reel stand with a slip mechanism between the driven gear identified on the reel shaft and the main driving gear arranged concentrically with the driven gear, and the driven gear of the reel stand A coupling gear is provided which is disposed so as to be able to mesh with and separate from the main gear at the same time, and the coupling gear is coupled to the driven gear and the main drive gear in conjunction with the pinch roller being pressed against and separated from the capstan. An interlocking mechanism is provided to control the movement between the separated position and the engaged position, and when the pinch roller is pressed against the capstan, the coupling gear is controlled to move to the separated position relative to the driven gear and the main drive gear, and in this state, the main drive gear The winding torque transmitted to the driven gear is transmitted to the driven gear via the slip mechanism, and the pinch roller is separated from the capstan, thereby causing the coupled gear to mesh with the driven gear and the main driving gear. The tape recorder is configured such that the winding torque transmitted to the main gear is directly transmitted to the driven gear via the coupling gear without going through the above-mentioned slip mechanism. In either mode, FR or CUB mode, the main gear is rotated, and the connecting gear is connected to the driven gear in conjunction with the pressing and separating operations of the pinch roller against the capstan. By meshing with and separating from the main gear, the required torque for FWD mode, PF, CUB mode, etc. can be obtained. In other words, the power transmission mechanism itself can be changed without changing (only moving) the torque change corresponding to each mode.Moreover, it is possible to change the torque change corresponding to each mode without changing the power transmission mechanism itself. Since the above-mentioned torque change is switched, there is no need to provide a separate critical switching mechanism.
The structure is extremely simple.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a reversing machine of a micro-cassette type cheap reader. Fig. 1 is an exploded perspective view of the main components, and Fig. 2 is a cassette-mounted state. Partially cutaway plan view, No. 311 is a plan view of 5TOP%j'F, RBW mode shown with the chassis removed, FIG. 4 is a plan view S similar to FIG. 3 showing normal FWD mode, No. Figure 5 is a plan view similar to Figure 3 showing reverse PWD mode, and 611I is a normal CUlil.
Figure 7 is a plan view similar to Figure 3 showing the RFi ■ mode, Figure 7 is a plan view similar to Figure 3 showing the reverse cug%RB ■ mode, Figure 8 is a plan view similar to Figure 3 ■-■-New 100 Figures, 9E is 51111- [line section m, Figure 10 is Figure 3 x-x
*Cross-sectional view, Figure 11 is the figure 3 1l-II line wits diagram,
1211 and 15 are l? CUn1 from WD mode
R1! FIG. 14 is a cross-sectional view illustrating the transition to the V mode, and a plan view showing a modification of the pinch roller crimping mechanism. In the codes used in the drawings, (2)...... Capstan (3)
%4hi・・・・・・Reel stand (to)・・・・・・
・・・・・・・・・Pinch roller 121・・・・・・
......1s2 slide board (to)...
・・・・・・・・・・・・First slide board (foundation)...
・・・・・・・・・・・・Micro cassette (to)...
・・・・・・・・・・・・Magnetic tape (1m)...
...Reel shaft (IQS) - ... Driven gear (IO2) ... Main gear (IQS) -
−−−−−−−−Ma*a(107)−・・・・・・・・・・
Spring (10B) --- Slip mechanism (110) (111)... Connection gear (121) --- Drive gear (122) (
1)...Intermediate gear (124)...It is a swing lever. Agent Masaru Jori #1141 Yoshio Toshiki Sugiro (Voluntary) Procedural Amendment April 30, 1980 Dear Commissioner of the Japan Patent Office 1, Indication of the Case Patent Application No. 3158S of 1982 Issued I! J1') Name 8 Teigrepu〆6, Number of inventions increased by amendment 7, Subject of amendment - Detailed explanation of the invention in the specification Column O 8 Contents of amendment (1), Page 14, line 14 of the specification ``It is called,'' is changed to ``9, made by making one side negative and the other positive.''
I will correct it. (2), page 14, lines 16-18, 10r These...
・・・・・・・・・・・・・・・・・・・Delete ★★

Claims (1)

[Claims] A reel stand equipped with a slip mechanism is provided between a driven gear arranged on the reel shaft and a main drive gear arranged concentrically with the driven gear, and At the same time, a connecting gear is arranged so as to be able to engage and engage freely, and in conjunction with the pinch roller being pressed against and interlocked with the capstan, the connecting gear is moved to a separated position and an engaged position with respect to the driven gear and the main driving gear. An interlocking mechanism is provided to control the movement of the pinch roller, and when the pinch roller is pressed against the capstan, the coupling gear is controlled to move to a position separated from the driven gear and the main driving gear, and the state C is transmitted to the main driving gear. The winding torque is transmitted to the driven gear via the slip mechanism, and the pinch roller is moved from the capstan for a moment, thereby controlling the movement of the coupled gear to a meshing position with respect to the driven gear and the main driving gear. However, in this state, the tape recorder is configured such that the winding torque transmitted to the main driving gear is transmitted directly to the driven gear via the thin gear without passing through the slip mechanism.