CN1170198A - Gear engagement mechanism of recorder - Google Patents
Gear engagement mechanism of recorder Download PDFInfo
- Publication number
- CN1170198A CN1170198A CN 97112773 CN97112773A CN1170198A CN 1170198 A CN1170198 A CN 1170198A CN 97112773 CN97112773 CN 97112773 CN 97112773 A CN97112773 A CN 97112773A CN 1170198 A CN1170198 A CN 1170198A
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- gear
- swing arm
- base plate
- engagement
- rotation
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Abstract
The present invention relates to a gear engaging mechanism of a recorder. Neighboring the supporting shaft of a moving gear disengaged with a reel driving gear, a combination component which is rotatably supported by a speed control component linked with a swing arm and serves as a check block maintaining the interval between gear shafts is provided, and a lug boss with an inclined surface are arranged on the bottom plate of the opposite side. During engagement, the combination component naturally shifts along the inclined surface to become vertical, and during disengagement, the combination component relies on a cam mechanism to be lifted along with the speed control component. The gear engaging mechanism cannot be affected by the change of the tension of the tape and utilizes a simple structure to firmly maintain the shaft interval of switching gears.
Description
The present invention relates to the machinery control of sound-track engraving apparatus, specifically, relate in particular to directly to mesh or to remove the mechanism of engagement between the gear that comprises the Spin Control of switching the positive and negative rotation of exporting and use swing arm to carry out.
The rotating mechanism of existing sound-track engraving apparatus, be earlier the rotation of motor to be delivered to the flying wheel capstan roller with belt, be divided into the rotate path that rotate path that " PLAY (recording or play) " be and " F.F. or refund " are then, through the cooperation of several belts or gear and after slowing down, be delivered to the swing pinion of spool platform and make the rotation of spool propeller boss, coiling tape.
Be used for the gear displacement mechanism that brings because of swing arm rotation of this rotation control mechanism, shown in Fig. 3 (a) pattern, the rotation that is supported on the turning axle C of stationkeeping and on the turning axle D that is located on the rotation swing arm A freely, is supported gear G and gear H engagement freely, and the turning axle E of this gear H is positioned at the place, fixed position of leaving turning axle C predetermined distance d.
Here, since when gear G when arrow r1 direction is rotated, for example on gear H, produce the tangential force P1 corresponding that causes because of magnetic tape tension etc. with load resistance T1, so the component F1 of the reacting force R1 that on the turning axle D of gear G, produces, and on swing arm A, acting on the revolving force of arrow s1 direction.Therefore, the engagement between gear G, the H trends towards tightr.At this moment, available block K limits the skew of swing arm A simply, so that do not become the engagement above normal depth between gear G, the H.
On the other hand, shown in Fig. 3 (b), since when gear G rotate to be arrow r2 direction the time, the tangential force P2 that the load resistance T2 of gear H causes produces reacting force R2 on turning axle D, its component F2 is as working from the power of moving back, so swing arm A is because of the direction of spacing m between the turning axle E of turning axle D from gear G to arrow s2 direction rotating moment that be partial to increase and gear H.
The change of load resistance T2 can cause the change of the depth of engagement, and spacing m increases and increases along with load resistance T2 in addition, so the engagement between gear G, the H shoals.And, in case load resistance T2 surpasses the spring force L of spring B, just can not normal engaged, thus just can not normal delivery rotate.
Practical problems is that the magnetic tape tension when tape is reeled changes with the increase of tape winding diameter, especially begins and the sharply variation of end of reeling at the tape coiling.Or be subjected to for example influence of the environment of temperature, humidity etc. in addition.Change and change along with the load resistance T2 that comprises described magnetic tape tension from moving back power F2.The variable effect of the described gearing mesh degree of depth of bringing from the power F2 of moving back becomes the reason of " audio distortions (WOW) " to rotational speed, or gear meshing is thrown off and become sliding contact between " driving " or the gear, thereby wearing and tearing or damage tooth top cause the worst case of damaging the gear body.
But,, promptly retrain the engagement releasing function of gear G, H, so can not use because block K also suppresses the swing function as swing arm A feature in same simple limiting mechanism.Locking function and the mechanism that removes the functional separation setting become complicated, and the increase of parts comprising the factor that causes fault, so be disadvantageous.In addition, owing to the spring force L of spring B increase stops swing arm A move, make gearing mesh to remove the time the power of swing arm skew also must be big, thereby the driving mechanism integral body of installing is produced a very large impact because of the reinforcement of other associated components etc.
General miniaturization and for sound-track engraving apparatus, material, the slab of forming member are used near its rigidity safety margin more, in the rotation transmission system of forming by this member, in the actuating mechanism of the disengaging meshing relation that works from the power of moving back, the swing arm top that the acting force that breaks away from the engagement wobble gear is more weak keeps engagement as block with other member.This situation because the scale error of element size and especially the magnetic tape terminal generation that needs moment of torsion very big from the power of moving back, thereby get on because of the stacks such as deflection deformation of member, just be difficult to guarantee the size of the between centers spacing of meshing gear.
Therefore, the objective of the invention is to, adopt the simple structure of a kind of usefulness to overcome the unfavorable condition that changes from the caused meshing gear between centers spacing dimensions such as the deformation of member that move back power effect generation because of the element size sum of errors, thereby a kind of gear engagement mechanism with sound-track engraving apparatus of reliable durable, high reliability is provided.
In order to achieve the above object, the gear engagement mechanism about sound-track engraving apparatus of the present invention comprises: base plate; Rotation the 1st gear freely on 1st spool vertical with described base plate; With relative fixed 2nd spool 2nd gear as turning axle vertical on the position of leaving described the 1st gear teeth gauge set a distance with base plate; Turning axle with the 1st gear is that pivoting point is arranged on rotating swing arm in the face parallel with the face of described base plate; By transmitting rotation with the 1st gearing mesh and to keep being integral the gear train that rotating a plurality of gear is formed with the state and the described swing arm of described the 1st gearing mesh.
Constitute the 3rd gear and the 2nd gear of described gear train, mesh or remove engagement by the rotation of described swing arm, near described the 3rd gear swing arm partly is provided with combination member, and tappet is set uprightly on base plate, only when described the 2nd gear and the establishment of described the 3rd gear meshing, described combination member is just reached with described tappet and is combined.
The swing arm that is provided with described combination member partly can slide along described vertical axis, the upright described tappet that is provided with on base plate, the face that relatively finishes rotating the 2nd gear of swing arm is roughly vertical with base plate, and at the 3rd gear away from its rotary track of direction upper edge of the swing arm of described the 2nd gear and towards base plate face tilt, the leg-of-mutton propeller boss of form right angle roughly.
Structure of the present invention as mentioned above, the 1st gear is the gear of driving side, and the 3rd gear is neutral gear and is meshed all the time and with the 1st gear that the motor interlock drives.The 2nd gear is output gear and common and spool propeller boss one rotation.With " PLAY (recording or play) " or " F.F. or refund " wait move corresponding, in be contained in 2 spools in the cassette for recording tape any one be driven in rotation to coiling direction by the spool propeller boss that combines with it.
Because the sense of rotation that the tape of 2 spool generations is reeled is reverse mutually, so the driven in rotation direction of corresponding spool propeller boss is also reverse mutually.Thereby, with the 3rd gearing mesh when directly being connected on the 2nd gear of a side with the spool propeller boss, spool propeller boss and the 3rd gear retrograde rotation, and with the 3rd gearing mesh to the 2nd gear that the direct-connected gear of spool propeller boss is meshed on the time, spool propeller boss and the equidirectional rotation of the 3rd gear.
Make swing arm revolution, respectively with the 2nd gear of each spool propeller boss interlock on engagement the 3rd gear and transmit rotation.At this moment, owing to the 3rd gear and the 2nd gear that promptly is positioned at the two ends of swing arm moving range in its diameter both sides mesh respectively, so the tangential driving force in the 2nd gear is reverse.Therefore, the fixing sense of rotation of relative the 3rd gear, the driving force in one the 2nd gear plays the effect that is tending towards meshing, and plays from moving back the power effect in another the 2nd gear.
Although for the acting force that is tending towards meshing, the between centers spacing that keep the 2nd gear and the 3rd gear is easy, as mentioned above, is very difficult for the keeping of between centers spacing from the power of moving back.Purpose of the present invention is exactly to keep for described between centers spacing from the power of moving back.
The part of swing arm constitutes the gear shift member of speed change with change gear, and by the cam following mechanism and the cam mechanism sliding contact of compression spring reinforcing.And swing arm itself also carries out reinforcing to the direction of the 3rd gear and the 2nd gearing mesh again with extension spring.In addition, by the operation from the sound-track engraving apparatus outside, cam mechanism makes the swing arm revolution freely with the spring force of extension spring, or contends with the spring force of spring and turn round, and can make the 3rd gear and desired the 2nd gearing mesh.
Along with because of and the revolution of the swing arm that causes of the spring force of the extension spring of cam mechanism interlock, the combination member that on the gear shift member of swing arm, is provided with, contend with spring force, and slide towards vertical direction from base plate along the inclined-plane of the upright tappet that is provided with on base plate with the compression spring of cam following mechanism interlock.Combination member descends along the vertical plane of tappet in the inclination terminal of having crossed tappet, thereby combines with tappet.
Therefore, the vertical plane of tappet by the load resistance of the 2nd gear with remove outwards contending with of the gearing mesh on swing arm, take place from the power of moving back, stop swing arm to the 3rd gear moving away from the direction of the 2nd gear.Like this, utilize the revolution action of swing arm and 2 functions of carrying out gearing mesh automatically and combining with tappet.
Because carry out parallel with gear shaft of slip of the vertical direction of combination member, so can utilize described cam mechanism to make gear train to moving axially, the gear shift member and the combination member of translating gear collocation can form one.On the other hand, remove the device that combines with tappet, can swing arm be done on the described cam mechanism of revolution action, be attached in the control template of cam mechanism as the part of forcing gear shift member vertical moving.
In addition, when being shaped, base plate can process tappet simply with methods such as punching presses.Can make swing arm keep the position of engagement like this, and any other new structural member or other mechanism can be set and just can accomplish that with simple structure releasing meshes.
The simple declaration of accompanying drawing
Fig. 1 is the vertical view about the sound-track engraving apparatus gear engagement mechanism of seeing from the rear side of cassette tape installed surface of the present invention.
Fig. 2 is along the expansion cut-open view shown in the II-II line among Fig. 1.
Fig. 3 is the key diagram of power transmit mode in the expression gear engagement mechanism.
The embodiment of the gear engagement mechanism of sound-track engraving apparatus of the present invention is described below with reference to the accompanying drawings.Fig. 1 is an embodiment of magnetic tape drive portion in the recorder of turn back automatically, is the vertical view of representing base plate 10 from the opposition side of cassette tape installation side.In addition, Fig. 2 is the cut-open view that launches along II-II line among Fig. 1.The drive pulley 12 of motor 11, by belt 15 rotation of motor 11 is delivered to along direction side (FWD) capstan roller flying wheel 13 and contrary direction side (RVS) capstan roller flying wheel 14, the driven wheel 18 that sets firmly on the turning axle 17 of FWD capstan roller flying wheel 13 is rotation simultaneously also.
Rotation train of reduction gears 20a, 20b freely at stationary shaft 19 upper supports of turning axle 17 prescribed distance of leaving driven wheel 18, deceleration gear wheel 20a and driven wheel 18 engagements, reduction pinion teeth 20b with and one coaxial rotation with it, with the speed change gear wheel 22a of speed gear group 22a, 22b engagement, and speed gear group 22a, 22b are rotated to be fixed on freely and constitute the 1st gear on the stationary shaft 21 that leaves stationary shaft 19 prescribed distance.Revolution swing arm 23 freely at stationary shaft 21 upper supports in addition, also have, gear shift member 24 described later is installed into and swing arm 23 unitary rotation.
25a, 25b, 25c are the gear shift gear trains of one rotation, and rotation supporting freely at one end is fixed on the bolster 26 of gear shift member 24.And the other end of bolster 26 is supported to and can endwisely slips with swing arm 23.Gear shift member 24, be bearing in as mentioned above on the stationary shaft 21 rotate freely, rotation freely, and by compression spring 27 to axial additional force, suffer restraints, with the disengaging that is unlikely to take place to cause because of this spring force.
Therefore, gear shift member 24 slides freely in the direction that compression spring is compressed, gear train 25a, 25b, 25c that rotation is bearing on the bolster 26 freely can be in axial gearshifts, and in operating function, can select the pinion wheel 22b engagement that whether makes gear shift gear train 25a, 25b, 25c middle gear 25a and speed gear group, still make the gear wheel 22a engagement of gear 25c and speed gear group.
The central gear 25b of gear shift gear train be neutral gear and with the engagement of the 3rd gear 28.Because the slip of the axis direction of gear shift member 24 is carried out in the facewidth of gear 25b, so the slip of speed change sliding component 24 can not removed the engagement of gear 25b and the 3rd gear 28, gear 25b transmission by speed change rotation.
Rotation by swing arm 23, the 3rd gear 28 and with figure in the left side direct-connected the 2nd gear 30a of spool propeller boss 29a engagement and make spool propeller boss 29a and 28 retrograde rotations of the 3rd gear, or for make with figure in the direct-connected gear 31 of the spool propeller boss 29b on right side reverse, make spool propeller boss 29b and the 28 equidirectional rotations of the 3rd gear with the 2nd gear 30b engagement that is clipped in the middle.
Support stationary shaft 21, the speed change slide teeth train 25a of speed gear group 22a, 22b, the bolster 26 of 25b, 25c and each between centers spacing such as bolster 32 that the 3rd gear 28 is supported in rotation freely freely with the coaxial and rotation of the center of rotation of swing arm 23 and fix, swing arm 23 is keeping the engagement between each gear and is rotating.Arrow is represented the direction of turning axle separately of each gear among the figure, and expression and the driving force of the 3rd gear 28 play the engagement from the 2nd gear 30a that moves back the power active side, represents with imaginary line with the position of the 3rd gear 28 of the 2nd gear 30b engagement that is tending towards meshing.
An end of the bolster 32 of the end of bolster 26 of gear shift gear train 25a, 25b, 25c and the 3rd gear 28 is supported in rotation freely, be installed on the framework 33 of gear shift member 24, the other end on swing arm 23 with gear shaft between spacing be located at supporting sliding freely in the dead eye 34,35 of ad-hoc location.
In addition, be inserted in the gear shift member 24 on the stationary shaft 21 and with the coaxial and supporting of swing arm 23 for revolution freely, rotation freely, slide freely along axis simultaneously, and be supported on the shifting axle 36, and revolution, slide freely, shifting axle 36 be retrained because of in be contained in the state of the outside spring force of compression spring 27 generations in the stationary shaft 21.Again on framework 33 parts, establish combination member 37 in that fixedly installing of bolster 32 is prominent near the position, near stationary shaft 21, be extruded with the cam following mechanism 39 that combines with cam mechanism 38 described later.
The 40th, punch press is gone out and the upright tappet that is provided with on base plate 10, and have along the mobile route of combination member 37 and from base plate 10 apicad dip plane 41 and have vertical plane 42 with the 2nd gear 30a opposite side.This vertical plane 42 and combination member 37 butts and bring into play to inhibiting effect from the power of moving back.
Outstanding inclined-plane 53 sliding contacts of the arcuation that cam following mechanism 39 tops 52 of gear shift member 24 and the periphery at disc cam 46 are provided with are carried out axial pressure to gear shift member 24 and are moved, thereby remove combining of tappet 40 and combination member 37.Carry out intermittently operation with not shown control member, gear parts 54 that the operation at this intermittence is provided with on periphery by disc cam 46 and hypodontia part 55 are brought, and disc cam 46 execution are by the program of cam template 50 defineds.
Next the engagement and the engagement releasing action of the 3rd gear 28 and the 2nd gear 30a in the gear engagement mechanism of sound-track engraving apparatus of the present invention are described.When the supporting of the cam template 50 relative with servo-actuated tappet 47,48 was disappeared, the transmission arm 43 sides spring 45 that is stretched stretched, and swing arm 23 is turned back to the 3rd gear 28 and the 2nd gear 30a position engaged.At this moment, gear shift member 24 also turns round with swing arm 23 interlocks.
Be compressed the combination member 37 of the gear shift member 24 of spring 27 additional forces, along the inclined-plane of tappet 40 and the one side sliding contact is simultaneously turned round, and cross the summit, fall vertical plane 42 sides, play the effect that combines with tappet 40 by spring force.Vertical plane 42 and contending with from the power of moving back of being produced by the variation of magnetic tape tension are kept the normal engaged of the 3rd gear 28 and the 2nd gear 30a.
Under the situation of removing the 3rd gear 28 and the 2nd gear 30a engagement, when disc cam 46 is rotated, same because by compression spring 27, with the follower top 52 of the periphery sliding contact of disc cam face 49 along with the rotation of disc cam 46 and along outstanding inclined-plane 53 and by on push away, so gear shift member 24 is offset, thereby combination member 37 is disengaged with combining of tappet 40.
Cooperate synchronously therewith, the side 57 of cam template 56 is with servo-actuated tappet 48 butts and rotating operation arm 44, and contends with the spring force of extension spring 45, make swing arm 23 revolutions, thereby the 3rd gear 28 breaks away from the 2nd gear 30a, and engagement is disengaged.
As the gear engagement mechanism of sound-track engraving apparatus of the present invention, enumerated the embodiment of disk cam mechanism, but this embodiment does not limit the present invention, for example, available manual push-botton operation formula makes the cancel system action with the button interlock.Like this,, also can easily select other mechanism for use, certainly, not break away from basic thought of the present invention and claim scope, can carry out various variations detail section if the colleague is the dealer.
As above explanation, because the gear engagement mechanism of sound-track engraving apparatus of the present invention, with the spool driven wheel break away from meshing relation the carrier wheel axle near, as the block that keeps spacing between gear shaft the tappet with inclined-plane is set on bottom parts, and make and enter when engagement and be offset, break away from the combining mechanism of mentioning disengaging when meshing along the inclined-plane naturally, so need not increase parts, available simple structure is guaranteed the between centers spacing of 2 gears that mesh and is changed irrelevantly with magnetic tape tension, can improve permanance and reliability.
Claims (3)
1. the gear engagement mechanism of a sound-track engraving apparatus, described mechanism comprises:
Base plate;
With perpendicular the 1st of described base plate on rotation the 1st gear freely;
Turning axle with described the 1st gear is that pivoting point is arranged on rotating swing arm in the face parallel with the face of described base plate;
Comprise that rotation is bearing on the described swing arm freely and transmits rotation with described the 1st gearing mesh and to keep and the state of described the 1st gearing mesh and the gear train of the rotating a plurality of gears of described swing arm one;
With with described base plate vertical 2nd spool 2nd gear as turning axle of relative fixed in the position of leaving described the 1st gear teeth gauge set a distance on the described base plate,
And constitute the 3rd gear and the 2nd gear of described gear train, and moving by the revolution of described swing arm and mesh or remove engagement, described gear engagement mechanism is characterised in that,
About near the swing arm described the 3rd gear of described engagement combination member is being set partly, and on described base plate tappet is being set uprightly, only when described the 2nd gear and the establishment of described the 3rd gear meshing, described combination member is just reached with described tappet and is combined.
2. the gear engagement mechanism of sound-track engraving apparatus as claimed in claim 1 is characterized in that, the swing arm that is provided with described combination member partly can slide along described the 2nd direction of principal axis.
3. the gear engagement mechanism of sound-track engraving apparatus as claimed in claim 2 is characterized in that, described tappet has: when described the 2nd gear and described the 3rd gear meshing are set up finishing swing arm revolution action, and roughly with base plate vertical face relative with the 2nd gear;
The 3rd gear during away from described the 2nd gear at its rotary track of the moving direction upper edge of swing arm and towards the face of base plate face tilt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP177557/1996 | 1996-06-18 | ||
| JP17755796A JP3192373B2 (en) | 1996-06-18 | 1996-06-18 | Gear mechanism of tape recorder |
| JP177557/96 | 1996-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1170198A true CN1170198A (en) | 1998-01-14 |
| CN1151504C CN1151504C (en) | 2004-05-26 |
Family
ID=16033050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971127735A Expired - Fee Related CN1151504C (en) | 1996-06-18 | 1997-06-17 | Gear engagement mechanism of recorder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3192373B2 (en) |
| CN (1) | CN1151504C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116433A (en) * | 2019-05-29 | 2019-08-13 | 唐山先锋印刷机械有限公司 | A kind of die-cutting machine intermittent movement component controls mechanism |
-
1996
- 1996-06-18 JP JP17755796A patent/JP3192373B2/en not_active Expired - Fee Related
-
1997
- 1997-06-17 CN CNB971127735A patent/CN1151504C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116433A (en) * | 2019-05-29 | 2019-08-13 | 唐山先锋印刷机械有限公司 | A kind of die-cutting machine intermittent movement component controls mechanism |
| CN110116433B (en) * | 2019-05-29 | 2024-06-04 | 唐山先锋印刷机械有限公司 | Intermittent motion part control mechanism of die cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3192373B2 (en) | 2001-07-23 |
| CN1151504C (en) | 2004-05-26 |
| JPH103711A (en) | 1998-01-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |