JPS60145545A - Transport of reverse type tape recorder - Google Patents

Abstract

PURPOSE:To constitute so that a forward reproducing is always executed by operating a reproducing operation lever again, when a tape reaches a tape end from a forward or reverse reproducing state, or after it is stopped, by using a cam gear of a simple constitution. CONSTITUTION:For instance, when a stop operation lever 5 is press-operated from a reverse reproducing state, a tape recorder becomes a stop mode state, but thereafter, when a reproducing operation lever 8 is press-operated, a forward reproducing is always executed. That is to say, when the stop operation lever 5 is press-operated, a lock plate 17 moves to the right, the reproducing operation lever 8 is rest to a non-operating position, and following this reset, a lock of a cam gear 59 is released, and the cam gear 59 is driven by a driving gear 75, becomes a stop mode and a forward state, and is locked. In this case, a reverse operation lever 48 also turns, and a switching lever 42 moves to the right and is reset to a forward reproducing position. Thereafter, when the reproducing operation lever 8 is press-operated, the forward reproducing is always executed.

Description

[Detailed description of the invention]

(Technical Field) The present invention relates to a reverse cheap record transport capable of reciprocating playback. (Prior art) In general, in this type of cheap record transport, recording, playback, direction switching, fast forwarding, rewinding, stopping, etc. can be performed by pressing operation buttons on the panel of the tape deck. It is configured so that it can be used for work. By the way, in the past, most of them used cams to switch between the 7-way direction and the reverse direction, but the switching operation was controlled electrically1), or the switching cam was not used. If the vehicle is stopped in the 7-o-wart direction, it will remain in the 7-o-war) S mode, and if the vehicle is stopped in the reverse direction, it will remain in the reverse mode. However, in the former case, a means for sending operation signals, an electric plunger, etc. are required for each of the above-mentioned operations, resulting in high costs and a complicated mechanism. In addition, in the latter case, when switching from stop mode to playback mode, there is an inconvenience when operating, such as having to check whether it is forward playback or reverse playback, and it is difficult to maintain the locked state in each mode. This method has drawbacks such as requiring a lock release prevention mechanism having a complicated structure. (Objective) The present invention has been made to solve the above-mentioned conventional drawbacks,
Using a cam gear with a simple configuration, if you reach the end of the tape from 7 o'clock or reverse playback, or if you operate the - button again after stopping, it will always be 7 o'clock.
The purpose is to rub 1 so that reward play is done. (Example) Hereinafter, the present invention will be explained in detail based on an example shown in the drawings. FIG. 1 schematically shows a reverse type tape recorder incorporating an example of a transport according to the present invention, and this cheap recorder 1 is configured to be capable of round-trip playback, one-way recording, and repeat playback. The capstans 2a, 2b and the pinch rollers 3a, 3b are arranged on the left and right sides (1), and both capstans 2a,
21) rotate in opposite directions to each other, and when changing the direction of the tape 4, one pin, the roller 3a or 31] or the tape ↓ is sandwiched between the capstans 2a and 21).
It is designed to be crimped. (A) Structure of the main part of the transport in this example Figures 2 and 3 show the stop mode. Button-type operation buttons (1
(not shown) are individually facing each other, and by pressing one or two of the buttons, recording, playback, direction switching, etc. can be performed. Each of the above buttons is attached to the front end of the corresponding operating lever 5-11. In FIG. 2, each operating lever 5. A fast forward operating lever 6, a rewind operating lever 7, a playback operating lever 8, a recording operating lever 9, a direction switching operating lever 10, and a mode switching operating lever 11 are arranged in parallel. The switching operation lever 11 is arranged at a position apart from other operation levers. Each of the operating levers 5 to 11 is formed into a desired shape and consists of a flat plate, and is suspended between the lever 15 and the main chassis 13 through a long hole 12 made transparent at an appropriate location. ... respectively forward, i.e. non-operated 1! There is a pull force in the γ position direction. The stop operation lever 5 to the recording fabrication lever 9 described in 1iii are shown in FIG.
The lock pin 16 protruding from the lock plate]7
One piece is individually fitted into each of the engagement windows 18a to 18e which are opened 1". (i) Structure of lock plate 17 This lock plate 17 is made of a horizontally long flat plate arranged perpendicularly to each of the operation levers 5 to 9, and is connected to the main chassis through long holes 19, 19, which are transparently provided at both left and right ends. The fixing pins 20 , 20 erected from the lock plate 13 are fitted so as to be able to reciprocate in the left-right direction.
The power switch 21 is turned on and off by the right end of the power switch 21 coming into contact with the power switch 21, which is suspended between the main chassis 13 and the spring 22
It is pulled to the left, that is, in the direction away from the power switch 21 by l=1 force. Each of the engagement windows 181] to 18e other than the long pin engagement window 1.3a of the stop operation lever 5 has each lock pin 16 at its rear end.
has a lock pin engaging recess 23 for holding the handle 1 in position. Further, the engagement window 18a of the stop operation lever 5 is connected to an inclined guide surface 2 for guiding the lock pin 1G of the lever 5.
It has 4. Furthermore, the engagement window of the IJ sound operation lever 9]
, 8e has a notch opening 25 extending from the left side. The rear part of this notch opening 25 is a rectangular gate part 26, and a bent piece 27 for unlocking is provided in this recessed part 2G.
is formed by bending it upward in FIG.
The cycle stop lever 30 is rotatably supported via a pivot pin 29. (11) Structure of each operation lever The stop operation lever 5, the fast-forward operation lever 6, and the rewind operation lever 7 have the same configuration, and are each made of a rectangular flat plate having a hooking pin for a tension spring 15 at the rear end. ,
As described above, it has the elongated hole 12 and the lock pin 16. The playback operation lever 8 includes all the constituent parts of the above-mentioned operation levers 5 to 7, as well as two rear parts, front and rear.
91 and the abutting part 31 with the recording operation lever -9 and the abutting part 32 with the cycle stone prepper 30, respectively.
is protruded to the left, and a latch 11 and a release lever 3 are located at the rear end.
An L-shaped abutting piece 34 having an abutting surface with 3 is extended. The recording reproduction lever 9 has all the constituent parts of the stop operation lever 5 and the like in the same manner as the playback operation lever 8 (liii).
An actuating member 35 that comes into contact with the locking member 1 is provided protruding to the right, and an unlocking prevention piece 36 is provided protrudingly. The direction switching operation lever lO is a rectangular flat plate having a long hole 12 similar to the above-mentioned operation levers and a hooking pin for the tension spring 15. The end face of the cam lock arm actuating arm 37 is bent sharply to the right from the rear end of the rectangular flat plate. It comes into contact with the cam lock arm 38 as a response mechanism to operate it. Note that this direction switching reproducing lever 10 is connected to the reproducing operation lever 8 by a blocking lever (not shown).
It is designed so that it will not be depressed unless it is pressed in the direction of the operating position. The mode switching operation lever 11 has an elongated hole 12 and an engaging pin for the tension spring 15, and has a cycle stop lever lock piece 39 bent at right angles from the rear end thereof. The mode switching lever 11 is in a locked state when pressed once by a locking mechanism (not shown), and is unlocked when pressed 11 times. (iii) Structure of cycle stop lever: 30 The cycle stop lever 30, which is rotatably supported on the lock plate 17, stops the tape drive for one day when changing the tape running direction during playback, and is located on the right side of this lever. It is rotated counterclockwise by a tension spring 40 suspended between the main chassis 13 and the main chassis 13, and in the stop mode, the right end portion abuts the bent abutting portion 32 of the regeneration operation lever 8. The rotation is on the butt side. In addition, the operating piece 35 of the mode switching lever 11 is provided at the tip.
An abutment pin 41 is provided in a protruding manner to be in contact with each other so as to be able to come in contact with each other. Further, on the left front side of the pivot pin 29, there is an arcuate guide surface 44 that contacts the contact pin 43 of the switching lever 42, and a first guide surface 44 that is arranged orthogonally to each other at the left end. A second guide surface 45,46 is formed respectively. (1v) Structure of the switching lever 42 As shown in FIG. 1, the switching lever 42 connects the pinch rollers 3a and 3b to the respective capstans 2a. 2+) to select either forward or reverse constant speed feed, and is supported by the main chassis 13'2 so as to reciprocate from side to side. Engagement piece 47 extending rearward from the left end
The abutment pin 43 is erected at the tip of the lever 4, and in the stop mode, the engagement piece 47 is connected to the reverse operation lever 4.
It is engaged with the front end bifurcated engaging portion 49 of 8. (v) Structure of the latch release lever 33 and its surroundings The latch release lever 33, which serves as a response mechanism, consists of a rectangular flat plate that is long in the front and back.
It is urged forward by a tension spring 50 suspended across the main chassis 13 so as to closely oppose the abutting piece 34 of the regeneration operating lever 8. As shown in FIG. 3, the right half of the rear end is in sliding contact with a launch plate pin 51 as a response mechanism, and this latch plate pin 5
A sloped guide surface 52a for moving the guide surface 52a downwardly, and a planar land 5 connected from the rearmost part of the guide surface 52a.
211 are each formed into one tree. As shown in FIG. 4, this launch plate pin 51 has engaging pieces 51a+51. The left-end engagement pieces 51 . a
is pressed downward by a compression spring 56 interposed between a large-diameter spring receiving portion 53a provided at the upper end of the support portion 53 and the latch plate pin 51. (ν1 ) Structure of Reverse Operation Lever 48 The reverse operation lever 48 is formed in the shape of a bell crank, and its bent portion is rotatably supported on a support shaft 57 erected on the main chassis 13. Engagement part 49.5
8 respectively. Of these, the rear end bifurcated engagement portion 58 is slightly bent at its midway portion, and is constantly engaged with an engagement pin 60 protruding from the surface of the cam gear 59. Further, the left end side outer end surface 4' of the front end bifurcated engaging portion 49
, 3a comes into contact with and separates from the right side of the rear end of the release connection lever 91 ii
Contact with J Noh. (vii) Configuration of the cam lock arm 38 and its surroundings The cam lock arm 38 is attached to a support shaft 62 erected on the main chassis 13-L through a bent portion of a flat plate formed in a hook shape. The cam lock arm 38 is pivotally supported, and is biased to rotate counterclockwise by a tension spring 63 suspended between the right end of the cam lock arm 38 and the main chassis 13. The rotation is restricted by a rotation restriction shaft 64 that stands up from the main chassis 13 in between. At the rear end of this cam lock arm 38, an engagement hole 55 for engaging the latch plate pin 51 described above with zero engagement and disengagement is formed in a circumferential manner. An engagement locking protrusion 66 is provided at the tip of the operating piece 65 to protrude downward. Furthermore, a long lock connecting rod f'67 is engaged with the rear of the support shaft 62 of the cam lock arm 38 on the left and right, and this lock connecting rod 67 is connected to a guide member 68 disposed at the front and rear of the intermediate portion. The cam lock arm 38 reciprocates from side to side according to the rotation of the cam lock arm 38 while being held by the cam lock arm 38, and has a bent abutting portion 71 at the tip thereof that is able to come into contact with and separate from the abutting pin 70 of the sensor lever 69. has been done. (viii) Configuration of the cam gear 59 and its surroundings The cam gear 59 has a rotating shaft 72 rotatably supported on the main chassis 13, and a toothless portion 73a having teeth missing by a certain angle at a symmetrical position with respect to the rotary yuzuki 72; 73b, and engaging protrusions 74a and 74b that engage with the engaging locking protrusion 66 of the cam lock arm 38.
, 731], the position t is in the downward direction b
One protruding portion is provided, and the counterclockwise rotation is biased by a spring (not shown). The cam gear 59 meshes with the drive gear 75 so as to be driven intermittently. Like the cam gear 59, the drive gear 75 is rotatably supported on two axes by a rotary drive shaft 76 or the main chassis 13, and is operatively connected to a motor 77 via a power transmission means (not shown). (l×) Release connection lever 61 and its surrounding configuration 1111
The recording release connection lever 61 is rotatable on a support shaft 78 that is provided upright from the main chassis 13 (it is made of a long short flat plate after the dij is pivoted on the ihi), and the recording release connection lever 79 is rotatably mounted on the front end. It has a pivot shaft 80 for supporting the recording sound release lever 79, and an abutment pin 81 that protrudes from the right side of the pivot shaft 80 and contacts the left end surface of the lock plate 17 so as to be able to come into contact with and separate from the left end surface of the lock plate 17. is arranged in a direction perpendicular to the release connection lever 61 in the stop mode state, and is urged to rotate counterclockwise by a tension spring 82 suspended between its left end and the main chassis 13. An abutment pin 83 protruding from the right end passes through one notch 25 of the lock plate 17 and comes into contact with and apart from the lock release prevention piece 36 of the recording operation lever 9, and also connects to one of the notches 25 indicated by -. It is formed by bending the retaining portions)'18 and ↓ that engage the end surface. (X) Structure of the sensor lever 69 and its surroundings 111j The sensor lever 69 is reversed 1. A support shaft 85, which is installed upright on the main chassis 13', is pivotably supported at the bent part l of the flat plate formed in the shape of '-I'. The acting piece 86 is extended +tt, and the cam 7 lower 87 is attached to the tip of the acting piece 286.
It is fixed. Mainly, the above-mentioned semicircular gate part 88 is formed on the rear end surface of the left end of the lever 69, and furthermore, the abutment pin 70 that comes into contact with the abutment part 71 of the above-mentioned lock connecting Ron lower is protruded from the rear end. It is. ” Niki Kam 7 Oroa 87
In the stop mode state, a plurality of cams 89.90.9
1, and the semicircular recessed portion 88 is always set at a position surrounding the front side of the pivot shaft 94 of the take-up reel stand 93. Cam club paulownia 92
is rotatably supported on the main chassis 13 with its rotating shaft 95, and has a gear 96 at the upper end.
The first cam 89. The second cam 90 and the third cam 91 each have a circular arc portion 89a concentric with the rotating shaft 95.
The second cam 90 is an arcuate cam that is integrally installed on the rotating shaft 95, and the third cam 91 is The take-up reel stand 93 is arranged at a position away from the rotating shaft 95, and its arcuate outer circumferential surface comes into sliding contact with the cam 7 roller 87.The take-up reel stand 93 has a receiving plate I; (not shown), a reel gear 97, and a slip plate 98, and a compression spring (not shown) interposed between the plate and the reel gear 97. The force is transmitted to the slip plate 98.The slip plate 98 has an arcuate portion 100 concentric with the pivot shaft 94 extending on both sides of one end of the bracket 99, which has a fitting portion with the pivot shaft 94. and at both ends of the lower surface of the circular arc portion 1()O,
Suppressing protrusions 102, 102 are provided in a protruding manner to press against contact surfaces 101, 101 formed on the left and right sides of the rear end of the semicircular recessed portion 88 of the sensor lever 69. Next, the operation of the above structure will be explained with reference to FIG. 2 and FIGS. 5 to 38. (a) Stop mode (see FIGS. 2 and 4) In the stop mode, each component 4 is positioned as described above. That is, each of the operating levers 5 to 11 is in the non-operating position, and the right end suppressing portion 17a of the longitudinal lever 17 is also held in a position away from the power switch 2 by the tension spring 22. The electrically connected motor 77 is stopped. (b) Mode switching from stop mode to forward mode (see Figures 5 and 6) When the regeneration operating lever 8 is pushed backward in the stop mode, the lock bin 16 is moved to the lock pin engaging portion 23. The regeneration operation lever 8 is held in the operating position, and the lock plate 17 is moved in parallel to the right, so that the switch suppressing portion 7a of the regeneration operation lever 8 is held in the operating position.
1 to turn on the power switch 21 and drive the motor 77. At the same time, remove the magnetic head (=1
A beam head stand (not shown) is moved in conjunction with the playback operation lever 8 to a position where the magnetic head is in contact with the tape 4, and the tape drive mechanism (not shown) is converted to a tape constant speed feeding state. There is. At this time, as the regeneration lever 8 moves rearward, the latch 11 release lever 33 moves rearward, and the latch plate bin 51 is guided by the inclined guide surface 52a and lowered.
As shown in FIG.
engaged and held by. As a result, the cam lock arm 38 is fixed, so that the engagement lock protrusion 66 of the cam lock arm 38 is connected to the engagement protrusion 7 of the cam gear 59.
1a to rotationally lock this cam gear 59. In this state, one toothless portion 73a of the cam gear 59 faces the drive gear 75, so the two gears 59, 75 are not meshed, and the cam gear 59 is therefore held stopped. 1, that is, this state is a 7-word playback state. (C) Switching from the 7-way mode to the reverse mode (see Figures 7 to 10) In the above-mentioned 7-way state, if you press the right switch lever (), the forward mode changes to the reverse mode. mode. That is, when the direction switching operation lever 10 is operated to suppress the cam lock arm 38
Alternatively, the cam lock arm actuating piece 37 of the operating lever 10 rotates the cam lock arm clockwise around the support shaft 62 by a predetermined angle. As a result, the right side engagement piece 51b of the latch plate bin 51 comes off the right side engagement part 55a and is guided to the rear part of the engagement guide hole 55. Then, the engagement protrusion 66 and one of the engagement protrusions 74a are disengaged, and the cam gear 59 is biased (=1) by the spring (not shown), rotates counterclockwise, and engages the drive gear 75. The drive gear 75 meshes with the cam gear 75, and the drive gear 75 rotates the cam gear 59 until it reaches the other toothless portion 7311.The rotation of the cam gear 59 causes the reverse operation lever 48 engaged with the engagement pin 60 of the drive gear 75 to rotate. The switching lever ↓2, which rotates in the clockwise direction 1) around the support shaft 58 and engages with the 1iij end bifurcated engaging portion 49 of the operating lever 4B, is moved to the left, and as a result, the 7 o'clock When I leave jll+capstan 2ah・ra

[The reverse side bin roller 3) 1 comes into contact with the tape 4, and a reverse playback state is established. Further, the rotation of the cycle stop lever 3) is regulated by the folded +l1 row abutting portion 32 of the regeneration operation lever 8, and the abutting pin 43 of the switching lever 42 has an arcuate shape in the above-mentioned seven o'clock (Ii raw state) It comes into contact with the guide surface 44, gradually moves to the first guide surface 45, and once the tape 4
Stop running in the direction of the 7th direction. 9 and 10 show the reverse regeneration state, and when the suppressing operation of the direction switching operation lever 10 is released, the cam lock arm 38 is rotated counterclockwise by the biasing force of the tension spring 63, and accordingly Thus, the latch plate pin 51 engages with the left engaging portion 55b of the engagement guide hole 55, prevents the cam lock arm 38 from rotating, and fixes the cam lock arm 38. Then, cam gear 5
9 is locked by the engagement locking protrusion 66, and at the same time the other toothless portion'? 3 b stops. As the cam gear 59 stops engaging, the reverse operation lever 48 is also locked at the position shown in Figure 5). In addition, the switching lever 4 locked to the front end bifurcated engagement portion 49
2 is also fixed in the reverse angle position, and accordingly, the abutment pin 4:'3 of the switching lever 42 moves from the m3 guide surface 45 of the cycle lever 30 to the second guide surface 46, and 1 The displacement of the high-cycle stop lever 30 causes the tape 4 to run in the reverse direction, thereby causing the tape to run at a constant speed in a reverse playback state. As will be described later in section (E), the switching operation from the 7-ward mode to the reverse mode (1) is an end detection at the rear end of the tape when the tape is running at a constant speed (depending on the structure). ) Switching from reverse mode to stop mode (first
(See FIGS. 1 and 12) When the stop operation lever 5 is pressed from the reverse playback state], the stop mode state is entered, but if the playback operation lever 8 is subsequently depressed, 7-word playback is always performed. First, when the stop operation lever 5 is pressed, the lock pin 16 of this presses into contact with the inclined guide surface 24 of the lock plate 17, and the lock plate 17 is moved to the right. The second pin 16 and the lock bin engaging recess 23 are unlocked, and the regeneration operating lever 8 is returned to the non-operating position. Along with this return operation of the regeneration operating lever 8, the latch release lever 33 returns to the non-operating position, and the latch plate pin 51 is placed on the land 521) again.
As shown in FIG. 12, the right side engagement piece 51b of the latch plate pin 51 and the left side engagement portion 55I of the engagement guide hole 55 are disengaged. As a result, the cam lock arm 38 returns to rotation in the counterclockwise direction until it comes into contact with the rotation restriction shaft 64 by the tension spring 63, and the cam lock arm 38
The lock between the engagement lock protrusion 66 of No. 8 and the engagement protrusion '74b of the cam gear 59 is released. The five cam gears rotate counterclockwise by a certain angle and return to the driving gear 75.
and is rotated counterclockwise by the gear 75 until the one engagement protrusion 74a is locked with the engagement lock lug 66, whereby the one toothless portion '7 is rotated again.
:3a is rotated counterclockwise until it is locked with the engagement opening and the protrusion 66, and the dj and one toothless part 73a
faces the drive gear 75. Due to this rotation of the cam gear 59, the reverse operation lever 48 also rotates in the anticlockwise rotation direction, and the rotation is locked again as the cam gear 5':3 is locked. That is, the current locking postures of the five cam gears are in the stop mode and the seven-ward mode. Then, as the reverse operation lever 48 rotates, the switching lever 42 moves to the positive position and returns to the 7-year-old word playback position. As a result, the reverse side pinch roller 3b moves away from the same side capstan 2ah, and the seventh backward side pinch roller 31 moves toward the same side capstan 2a. However, since this scraping regeneration operation lever 8 is unlocked by the lock 11,...
The stand has returned to the non-playback position, and tape 4 is no longer running. Also, in order to return the stop lever 5 to the non-operating position ('''
Since the lock plate 17 also returns to the stop mode position, the power switch 21 is turned off and the motor 77 is stopped. Note that the power switch 21 is connected to the cam gear 5″:3
The motor 77 is adjusted to stop after the rotation of the motor 77 stops. In this way, the cam gear 59 always maintains the same locked position as in the backward mode (in the stop mode), so that when the regeneration operation lever 8 is operated to suppress the regeneration operation, seven backward regeneration is always performed. Note that switching from the reverse mode to the stop mode can also be performed (ii) by an end detection mechanism at the end of the tape when the tape 4 is running at a constant speed in reverse. (e) Switching from the 7-word mode to the reverse mode using the end detection mechanism (see FIG. 14 and FIG. 14). In the 7-word playback state shown in FIG. Even if the play idler (not shown) rotates,
The slip roller (not shown) slips and stops rotating. [Accordingly, the left suppression protrusion 102 of the slip plate 98 stops in contact with the contact surface 101 of the sensor lever 69. Then, the sensor lever 69 temporarily stops rotating in the clockwise direction when the cam 7 lower 87 or the second cam 90 reaches its maximum diameter. Then, as shown in FIG. 13, the cam portion 92 rotates counterclockwise, and the cam 7 lower U7 comes into sliding contact with the third cam 91. Following this, the sensor lever 69 gradually begins to rotate clockwise, and the abutment pin 70
The lock connecting rod 67 that is in contact with is moved to the right. As a result, the cam lock arm 38 rotates clockwise, and the right retaining piece 51b of the latch plate pin 51 moves within the engagement guide hole 55 toward the left engagement portion 55b. When the cam 7 lower 87 approaches the maximum diameter part of the third cam 91, the engagement lock protrusion 66 of the cam lock arm 38 and the engagement protrusion 74a of one of the cam gears 59
Cam gear 5 is unlocked! It rotates counterclockwise by the moon spring, meshes with the drive gear 75, and further rotates counterclockwise. As a result, the reverse operation lever 18 rotates clockwise, moving the switching lever 42 to the left. At this point, the pinch roller 3a in the 7-word playback state moves away from the capstan 2a, and at the same time the pinch roller 3b in the reverse playback state moves closer to the capstan 21. and,
Since the lock plate 17 is moved to the right, the rotation of the cycle stop lever 30 is restricted by the contact portion 31 of the regeneration lever 8, and as the switching lever 42 is moved to the left, the rotation of the cycle stop lever 30 is restricted by the contact portion 31 of the regeneration lever 8. 43 is an arcuate guide surface 44
From there, the tape 4 gradually slides into contact with the first guide surface 45, and once stops running of the tape 4 in the 7th direction. Also,
When the cam 7 lower 87 reaches the maximum diameter end of the third cam 91,
The rotation of the sensor lever 69 in the clockwise direction reaches its maximum, and the lock connecting rod 67 locks the cam lock arm 38.
Maximum rotational displacement in the clockwise direction. After that, when it passes the maximum diameter end of the cam 7 lower 87 or the third cam 91, the sensor lever 69 is rotated counterclockwise, and the cam lock arm 38 is slightly rotated counterclockwise again. . Therefore, the latch plate pin 51 is engaged and locked to the left engagement portion 551) along the engagement guide hole 55 of the cam lock arm 38. As a result, the rotation is locked by the engagement protrusion 74I of the cam gear 59 or the engagement lock protrusion 6G. Note that this and the other toothless part '73b are the drive gear 75.
The cam gear 59 is held stationary because it faces the moon. At this time, the cam gear 59 is in the locked position or in the reverse mode. Further, the reverse operation lever 48 is also locked by locking the cam gear 59 as described above, and the switching lever 42 that is engaged with the front end bifurcated engaging portion 49 is connected to the reverse side 1 pinch roller 3b with the tape attached to the capstan 2b. 4 is held in a press-contact state, thereby causing the tape to run at a constant speed in a reverse state. Therefore, at this time, the contact pin 43 of the switching lever'-42 contacts the second guide surface 4.6, displacing the cycle stop lever 30 to the tape running state. (to) When the direction switching lever is suppressed from the reverse mode (see Figures 15 and 16) When the direction switching lever 10 is suppressed from the reverse playback state shown in Figure i9, the cam lock arm of the operating lever 10 Since the cam lock arm 38 is rotated clockwise by the actuating piece 37, the latch plate pin 51, which has been engaged and locked to the left side engagement portion 5'5b, is rotated clockwise along the engagement guide hole 55. Displace. Next, when the suppressing operation of the direction switching operation lever 10 is released, the cam lock arm 38 is rotated counterclockwise by the tension spring 63, and thereby the latch plate pin 5
1 is locked to the right side engaging portion 55b. Further, the engagement lock protrusion 66 is disengaged from the other engagement protrusion 74), and the cam gear 59 is rotated counterclockwise by the spring to mesh with the drive gear 75, and the gear 75 further engages with the drive gear 75. It is rotated clockwise. As the cam gear 59 rotates, the reverse operation lever 48 is rotated counterclockwise, and the switching lever 42 is moved to the right. At this time, the pinch roller 3b on the restorer's side separates from the capstan 2b, and at the same time, the pinch roller 3 on the forward side
a approaches the capstan 2a. Cam gear 55 from contact pin 43 of switching lever lI 2
Since the cycle stop lever 3 slides from the second guide surface 516 to the first guide surface 45 when the rotation is made as shown in FIG.
The lock plate j7 connected to the two pivot pins 0 moves to the right, and as a result 1) the regeneration operation lever 8 is disengaged from the lock plate 17, and the regeneration lever 8 becomes inoperable. By returning to the position and moving the latch release lever 33 forward, the latch plate pin 51 is moved to the land 52b.
The right engaging piece 51b of the pin 51 moves away from the engaging guide hole 55 of the cam lock arm 38. In this way, when the playback operation lever 8 returns to the non-operating position, the head stand also moves to the contact position between the tape 4 and the magnetic head (
from the working position) to the non-working position, and the pinch roller 3
Capstan 2a and 3b are also in the middle of transitioning to the forward mode state. 21] returns to the non-operating position. Thereafter, as the cam gear 59 rotates, one of the engaging protrusions 7
4a is locked to the engagement lock protrusion 66, thereby -
- The toothless portion 73a of the force comes into contact with the drive gear 75, and the cam gear 59 stops again. And the reverse operation lever 48
When the cam gear 59 stops, the lock plate 178
After returning to the stop position, the rotational displacement in the counterclockwise direction is stopped and the stop mode posture is established. Similarly, the switching lever 42 also stops moving to the right. In this way, even when the direction is changed from the reverse mode, the stop mode returns and when the regeneration operation lever 8 is pressed as described above, the 7-word regeneration state is started. (g) Automatic switching from tape end to stop mode in reverse mode (see Figures 17 and 18) In the reverse playback state shown in Figure 9, the tape 4 is completely attached to the reel of the supply reel stand (not shown). is wound up,
When the tape end is reached, the supply reel stand stops rotating due to the slip action of the slip roller despite the rotation of the play idler. Along with this, the take-up reel stand 93 also stops rotating, so the pressing protrusion on the right side of the slip plate 98] 02 is the sensor lever 6! It stops in a state where it is in contact with the contact surface 101 of . Then, the sensor lever 69 temporarily stops rotating in the clockwise direction when the cam 7 or the second cam 9 ( ) reaches its maximum diameter. Then, as shown in the 17th section 1, the cam member 92 rotates one turn counterclockwise in the 1) direction, and the cam 7
The roller 87 comes into sliding contact with the third cam 91. Accordingly, the sensor lever 69 gradually begins to rotate clockwise, causing the lock connecting rod 67 in contact with the abutment pin 70 to move to the right. As a result, the cam lock arm 38 rotates clockwise, and the right side engaging piece 51b of the punch plate pin 51 moves to the left side engaging portion 51.
5b along the engagement guide hole 55,
Displace clockwise. When the cam 7 lower 87 reaches the maximum diameter portion of the third cam 91, the rotational displacement of the sensor lever 69 in the clockwise direction becomes maximum, and the cam lock arm 38 is maximally displaced in the clockwise direction 1). When the cam 7 lower 87 passes the maximum diameter end of the third cam 91, the cam lock arm 38 is unlocked and the latch plate pin 51 is not displaced clockwise, but the right engaging portion 55
a to lock the cam lock arm 38 rotating counterclockwise. This rotational return of the cam lock arm 38 causes the engagement lock starter 66 and the cam gear 59 to
The engagement with the engaging protrusion 74b on the viewing side is released, the cam gear 59 is rotated counterclockwise by the spring, meshes with the drive gear 75, and further rotates counterclockwise. Then, the reverse operation lever 48 is rotated clockwise, and the switching lever 42 is moved to the right. At this time, at the same time as the reverse operation side pinch roller 3b moves away from the capstan 2b, the seven-way pinch roller 3a approaches the capstan 2a. The subsequent operation of the transport reaches the stop mode attitude through the same process as in the previous section. Note that when the regeneration lever 8 returns to the non-operating position, the cycle stone prepper 30 contacts the prayer bending contact portion 32, and as the lock plate 17 returns to the non-operating position, the cycle stone prepper 30 contacts the bending contact portion 32 as the lock plate 17 returns to the non-operating position. It returns to the non-operating position while slidingly contacting the section 32. (h) Continuous tape playback Now, in the transport according to the present invention, by locking the mode switching lever 11 at the rest position, 1) Continuous tape playback is possible. That is, in FIGS. 19 to 30, the mode switching operation lever 11
When the operation lever 11 is suppressed and locked in the operating position, the cycle 2 pre-lock piece 39 of the operation lever 11 comes into contact with the abutment pin 41 of the cycle stop lever 11, and the cycle stop lever 30 is locked and fixed in a state in which it is rotated clockwise around the pivot pin 29, and the first. Second guide surface 4
5° 46 and the abutment pin 43 of the switching lever 42 are prevented from engaging and abutting. As a result, the tape 4 is not subjected to the stop action of the cycle stop lever 3( ) and is continuously played back endlessly. Figures 19 and 20 show the 7-word playback state in this continuous playback state, and the operation of each part is described in (b) above.
Same as section. 21 to 24 show the operation of each part when switching from the 7-word mode to the reverse mode in the continuous playback state, and this operation is described in ntj (
This is the same as item c). FIG. 25 and FIG. 100 explain the operation of each part when switching from the 7-word mode to the reverse mode by the end detection mechanism, and the operation at this time is as described in (E) above.
Same as section. FIG. 27 and FIG. 28 show a state in which the direction switching operation lever is suppressed from the reverse mode, and the operation in this case is the same as in the above section. 29 and 30 show the tape end state in the reverse mode, and the operation at this time is almost the same as in item (g) above, but in this case, the cycle stop lever 30 is in contact with the switching lever ll2. Since it does not come into contact with pin 43, the tape runs at a constant speed in forward mode again (
I will do something. However, when the stop operation lever 5 is depressed, the power switch 21 is turned off, so that the tape is not played back. (W) Switching from stop mode to recording mode (31st
If the recording operation lever 9 is depressed from the stop mode state shown in FIG. 2 as shown in FIG. 31, it is possible to perform recording in the seven-word state. That is, press the recording operation lever IL) 11. Then, the operating lever 5] is actuated, and the operating lever 8 comes into contact i".
1:) Touch 1 and press the lever 8 of the same amphibian to 11.
,? is moved to the operating position, and both operating levers 8 and 9 are locked in the operating position. As a result, the recording device of the figure is activated, and recording onto the tape 4 becomes possible. In this state, when the abutment pin 83 of the recording release lever 75 separates from the lock release prevention piece 36 of the recording operation lever 9, the recording release lever 75 is rotated counterclockwise by the tension spring 82, and The pin 83 abuts against the rear end surface of the notch opening 25 of the lock plate 17 and is locked. This state is the recording mode state. (N) Recording ('4 mode to tape end (see Figures 33 and 34)) In recording mode, when tape 4 reaches the end, 8
The operation of the part goes through the process disclosed in the above-mentioned (e), or at this time, according to the rotational displacement of the reverse operation lever 48 in the counterclockwise direction, as shown by the imaginary line 1 in FIG. 33, The release connection lever 61 is connected to the left outer end surface 11. of the reverse operation lever 18. ! The recording release lever 75 moves to the right as the release connection lever 61 rotates in the counterclockwise direction, and the engagement piece 84 of the lever 75 moves to the right. comes into contact with the unlocking bent piece 27 of the lock plate [7] and pushes the lock plate 17 to the right. As a result, the playback operation lever 8 and the recording operation lever 9 are each unlocked from the lock plate 17 and returned to their non-operation positions. After this, lock plate 17
or return to the left and return to stop mode. In addition, in the recording mode state, the direction switching operation is prevented by means not shown. (l) Switching from stop mode to fast forward mode or rewind mode (see Figures 35 and 36) Switching from the stop mode shown in Figure 2 to the fast forward operation lever 6 or the rewind mode as shown in Figure 35 When the rewind operating lever 7 is pressed repeatedly, a fast forward or rewind state is entered, and the tape 4 is driven at high speed in the backward or reverse direction. However, FIG. 35 shows the rewind mode. Year,
To explain about the fast-forward mode, press the fast-forward operation lever 6.
When the lock plate 17 is moved to the right -\ω and the power switch 21 is turned on, several high-speed drives (not shown) are activated and the tape is wound at high speed in the direction of 4!:7. .In addition, the lock plate 17 in the fast forward mode
The amount of movement in the right direction is smaller than in the playback mode due to the positional relationship of the lock pin engagement recess 23. Further, one toothless portion 73a of the cam gear 59 faces the drive gear 75 and does not rotate. The rewind mode is the same as the fast forward mode except that the tape 4 is rewound at high speed in the reverse direction by a high-speed drive mechanism. (w) From the fast forward mode or rewind mode to the end of Q (see Figures 37 and 38) Now, to explain the fast forward mode, the reel stand 93 on which the tape 4 is wound
When the tape is completely wound on the reel and reaches the end of the tape,
1 After each part of the lance boat goes through a process that is almost the same as the process in the above item (J), the engagement between the lock plate 1'7 and the fast-forward operation lever 6 is released, and the fast-forward operation lever 6 is released.
When it returns to the non-operating position 1δ ('i'), the link with the high-speed drive mechanism is released.In addition, in the rewind mode, it is almost the same as in the double fast-forward mode. (Effects) As described above, according to the present invention, the cam gear and the regeneration operation lever are connected in response to the suppression operation of the lever (through several mechanisms), and the cam gear described in 11; A switching lever for switching the running direction of the tape between the 7-way direction and the reverse direction is interlocked with the cam gear to be driven intermittently, and the cam gear is interlocked with a switching lever for switching the running direction of the tape between the 7-way direction and the reverse direction. A tooth portion and a pair of engagement protrusions that engage and disengage with the response mechanism are arranged symmetrically, and one of the engagement protrusions engages with the cam gear in response to rotation of the cam gear. When the protrusion engages with the response mechanism, either one of the missing teeth faces the drive gear, and when the reproducing lever is depressed, the tape is "always" run in the backward direction. The operation position of the switching lever is locked by the reverse operation lever described in +iii.Therefore, it is possible to switch between 7-word playback and reverse playback operation with a single cam gear, so the number of parts has been reduced. Not only can this reduce costs, but it can also improve assembly workability.Also, whenever the regeneration control lever is pressed, the reward mode This eliminates the inconvenience when switching from stop mode to playback mode, such as having to check whether it is a 7 o'clock 11j birth or a reverse birth.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view showing an outline of the tape running state, FIGS. 2 to 38 show the transport in the J state, and FIG. 2 shows the transport in the stopped state. 3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a sectional view taken along the line B-13 in FIG. 2, and FIG. 5 is a plan view showing the 7-word playback state. Figure 6 is C of Figure 5.
- A cross-sectional view along the Q line, FIG.
Figure 9 is a plan view showing the reverse playback state, Figure 10 is a cross-sectional view taken along the E-E line in Figure 9, and Figure 11 is a stop from the reverse playback state. A plan view of the transition to the machining state, Fig. 12 is F-E in Fig. 11.
13 is a plan view showing the tape end state when playing a 7-year-old word; FIG. 14 is a sectional view taken along line G-; 9) in FIG. 13; FIG. A plan view showing a state in which the direction has been changed from the birth state, the first
Figure 6 is a sectional view taken along line 1-(-t1 of Figure 15,
The figure is a plan view showing the tape end state during reverse playback, FIG. 18 is a sectional view taken along the line ■-i in FIG. 17, FIG. 19 is a plan view showing the forward playback state during continuous playback, and FIG. is a sectional view taken along line j-J in FIG. 19,
Figure 21 is a plan view showing the state when the direction switching foot is operated from 7 o'clock Filj raw during continuous playback;
Figure 2 is a sectional view taken along the line -I in Figure 21, Figure 23 is a plan view of the reverse playback state at Continuation 1 [J low, Figures 2 and 1 are L- in Figure 23] 25 is a plan view showing the tape end state during continuous playback of 7-year-old words; FIG. 26 is a sectional view taken along line M in FIG. 25;
27 is a plan view showing the state when the direction is changed from the reverse playback state during continuous 11j playback; FIG. 28 is a sectional view taken along line N-N in FIG. 27; Fig. 29 is a plan view showing the tape end state during reverse playback during continuous playback, Fig. 30 is a sectional view taken along line P-P in Fig. 29, Fig. 31 is a plan view showing the recording state, and Fig. 32. is a cross-sectional view taken along the Q-Q line in Fig. 31,
Figure 3 is a plan view showing the tape end state during recording, No. 34.
The figure is a sectional view taken along line R-R in Fig. 33, Fig. 35 is a plan view showing the unwinding state, Fig. 36 is a sectional view taken along line S-8 in Fig. 35, and Fig. 37 is an unwinding FIG. 38 is a cross-sectional view taken along line i'-1' in FIG. 37. 4 is the tape, 5 is the stop and repeat lever, 6 is the fast forward lever,
7 is a rewind lever, 8 is a playback operation lever, 9 is a fi sound operation lever, 10 is a direction switching operation lever, 11 is a mode switching operation lever, 13 is a main chassis, 17
is a lock plate, 3o is a cycle strike lever, 33 is a latch release lever, 36 is a lock release prevention piece, 38 is a cam lock arm, 42 is a switching lever, 48 is a reverse operation lever, 51 is a latch plate pin, 59 is a cam gear, 61 is a release connection lever, 66 is an engagement lock protrusion, 6
7 is a lock connecting iron, 69 is a sensor lever, 73a
, 73b is a toothless portion, 74a and 74b are engagement protrusions, 75 is a drive gear, 77 is a motor, 79 is a recording release lever, 87
92 is a cam member, 93 is a take-up reel stand, 98 is a slip plate, 101 is a contact surface, and 102 is a suppressing protrusion. Applicant Sharp Co., Ltd. Agent Patent Attorney Oka 11 Kazuhide Proceedings Supplement (Voluntary) Showa J') 1953 271161'' 1, 1111 Display 1981 1, 1;' [Application No. 2 19023 2. Name of the invention Reverse type i-precog) Lance boat 3, Supplementary 1F
Those who are filial! Relationship with IXI'l 1, N1;'1 Applicant 11'1
1 Osaka 11me 1iiJ 22-22, Atsuike-cho, Katsuno-ku Name (,”) tl 4) Sharp Co., Ltd. Representative name Saeki Asahi・1, ii! 11 people

Claims (1)

[Claims] (]) The cam gear and the regeneration operation lever are interlocked and connected via a response mechanism that responds to the suppression operation of this lever, and the cam gear (iif) is engaged with the drive gear of the drive means so as to be driven intermittently, and the cam gear is engaged with the cam gear in reverse. A switching lever for switching the running direction of the tape between a seven-way direction and a reverse direction is interlocked and connected via an operation lever, and the toothless portion of the first month is removably engaged with the cam gear and the response mechanism. , t=J engagement protrusions are arranged in a first-order manner, and when one of the engagement protrusions engages with the response mechanism in accordance with the rotation of the cam gear, either one of the toothless parts The operating state of the switching lever is locked via the reverse operation lever so that the drive gear faces the moon and the tape is always run in the 7-way direction when the reproduction operation lever described in 01j is depressed. A characteristic reverse type Cheap Recog transboat.