CN1045837C - Rotation driving apparatus - Google Patents
Rotation driving apparatus Download PDFInfo
- Publication number
- CN1045837C CN1045837C CN93109569A CN93109569A CN1045837C CN 1045837 C CN1045837 C CN 1045837C CN 93109569 A CN93109569 A CN 93109569A CN 93109569 A CN93109569 A CN 93109569A CN 1045837 C CN1045837 C CN 1045837C
- Authority
- CN
- China
- Prior art keywords
- capstan
- chassis
- flywheel
- supporting
- supporting member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
Abstract
The present invention can thin the device on the whole in thickness and to simplify the structure by bearing a load of a rotary body including a rotary shaft by means of a bearing part of a chassis and lightening the burden of a load of a supporting member. The device is equipped with the chassis having the bearing part, a capstan supported freely rotatably by the bearing part of this chassis and a flywheel provided integrally and rotatably with the capstan and rotationally driven by transmission of driving power from a motor. Then, a stopper ring is fitted around an outer circumference of the capstan led out of the bearing part to the side opposite to the flywheel, and the bearing part is held between this stopper ring and the flywheel, while the supporting member for supporting freely rotatably a part projecting from the flywheel on the capstan to the side opposite to the bearing part is fitted to the chassis.
Description
The present invention relates to be used for the such record of blattnerphone, put the rotating driving device in the device, particularly relating to its capstan is the supporting structure of the turning axle of representative.
In the machine box inside that constitutes the blattnerphone shell, be provided with the rotating driving device that makes the tape walking.This rotating driving device is provided with pinch roller, sandwich tape between this pinch roller and the capstan and the capstan that makes it to walk and with the transmission of power of the motor power-transmission system to this capstan, these have separately that the part in addition of function is assembled on the common chassis.
At an end of capstan, be equipped with and can rotate with being integral with capstan, accept the flywheel of the revolving force of motor output.But this capstan free rotary ground supporting is on the bearing portions on chassis, and pinch roller in crimping on the end of the opposite side with flywheel of capstan.
In this rotating driving device, tilt with respect to the chassis in order to prevent capstan, wish length lengthening with above-mentioned bearing portions.But the current tape sound-track engraving apparatus has the trend of slimming, therefore also wishes to do rotating driving device thinly as far as possible and make its miniaturization.Like this, the thickness on chassis is subjected to bigger restriction certainly, and the length this point of above-mentioned lengthening bearing portions is disadvantageous to installing whole thin typeization obviously.Therefore, in the prior art, having proposed a kind of way, is exactly the support plate by flywheel one side end of mounting support capstan below above-mentioned chassis, this capstan of position upper support that so just two are separated on direction of principal axis.
Capstan is made under 2 situations of locating to support this, be added with the load of capstan and flywheel owing to be positioned on the support plate below the chassis, so require this support plate that the intensity of bearing above-mentioned load can be arranged.And, capstan with respect to the chassis under the situation of supporting laterally, the vibration by capstan increases makes flywheel runout in the axial direction, the load of this flywheel also may be added on the support plate.
Owing to these reasons, the load of support plate is very big, thereby waits the intensity that improves support plate self with regard to the thickness that requires to increase support plate.But the thickness of support plate one increases, and that part of support plate will stretch out below base plate, so just with want that the requirement of whole slimming is disagreed.
The present invention be directed to above-mentioned situation makes, its purpose is to provide a kind of rotating driving device, it is the load that can be born the rotary body that comprises turning axle by the bearing portions on chassis, alleviates the load of supporting other part, thereby can make the whole slimming and simple in structure of device.
To achieve the above object, the present invention takes following technical scheme:
A kind of rotating driving device, wherein, but make turning axle 35 free rotary ground supportings in being located at The One On The Chassis bearing portions 33, make the two ends of this turning axle 35 protrude in the two sides side on chassis, rotary body 26 and retaining member 37 are installed on above-mentioned turning axle 35, bearing portions 33 are clipped in the middle, to forbid rotating 35 axial mobile by this rotary body 26 and retaining member 37, described rotary body 26 is rotated driving by drive source 13, it is characterized in that:
The supporting member 40 that will have through hole 43 is fixed in chassis 1, by above-mentioned through hole 43, but the end of described rotary body 26 sides of free rotary ground supporting turning axle 35.
And the rotating driving device of the present invention of making, it is characterized in that: but it is provided with the chassis of bearing portions and connects this chassis and the turning axle of free rotary ground supporting on the bearing on this chassis, with being integral rotatably rotary body that the power rotation of being transmitted by motor drives is set with this turning axle;
Be equiped with the retaining member towards a side opposite from the turning axle outer peripheral edges that above-mentioned bearing portions stretches out with above-mentioned rotary body, with this retaining member and rotary body bearing portions is clipped in the middle, simultaneously at the supporting member that is installed with on the chassis on the above-mentioned turning axle of energy free rotary ground supporting towards an opposite side from the rotary body outshot with bearing portions.
Because said structure is clipped in the middle the bearing portions that turning axle connects with retaining member on the turning axle and rotary body, no matter some tilts the load that can both be born the rotary body that comprises turning axle by bearing portions on what direction so turning axle is with respect to the chassis.
Like this, supporting member just needn't bear the load of rotary body energetically, as long as it is just passable that not run-off the straight of turning axle ground has been supported, thereby the load that can alleviate supporting member, can do that part of supporting member thinly and makes its miniaturization.
Therefore, just do not need to bear the special parts that rotary body load is used yet, can reduce part count, can simplify the structure of the supporting part of turning axle simultaneously.
Fig. 1 is along the A-A sectional view among Fig. 3, the installation constitution of the capstan in the expression first embodiment of the invention.
Fig. 2 is along the B-B sectional view among Fig. 1.
Fig. 3 is the rear view of rotating driving device integral body.
Fig. 4 is the oblique view of the relative position relation of the driving belt of flywheel and supporting member.
Fig. 5 be among Fig. 6 C to the rotating driving device outboard profile of seeing.
Fig. 6 is the planimetric map of rotating driving device integral body.
Fig. 7 is the installation constitution sectional view of capstan in the second embodiment of the invention.
Among the figure, 1-chassis, 13-drive source (motor), 21-turning axle (capstan), 26-rotary body (flywheel), 33-bearing portion, 37-stop portion (retaining ring), 40,61-supports other part.
Below, illustrate that referring to figs. 1 through Fig. 6 the present invention is applicable to first embodiment of the rotating driving device of portable blattnerphone.
In Fig. 3 to Fig. 6, chassis 1 is shaped by synthetic resin with being integral.The rectangle less than tape cassete 2 is made on chassis 1, tape cassete 2 be contained in this chassis 1 above.
But magnetic head supporting plate 4 fore-and-aft directions be bearing in slidably chassis 1 above.The magnetic head 5 that playback is used is installed on magnetic head supporting plate 4.Be pressed into the playback bar 6 that is integrally formed into magnetic head supporting plate 4 with finger tip, 5 of this magnetic heads advance with magnetic head supporting plate 4, contact with tape 7 in the tape cassete 2.
But machine reel supporting base 9 and supply reel supporting base 10 free rotary ground supportings are on chassis 1.As shown in Figure 3, the turning axle 11 of winch spool supporting base 9 runs through chassis 1, and side is stretched out below this chassis 1.In the end of stretching out of turning axle 11, fixing coiling belt pulley 12, this coiling belt pulley 12 has small diameter portion 12a and major diameter part 12b.
1 and bights winch spool supporting base 9 adjacency on the chassis form motor mounting part 1a.As shown in Figure 5, motor mounting part 1a more forms in the lowland than the other parts on chassis 1, on this motor mounting part 1a, with screw fastening motor 13.
The driving shaft 14 of motor 13 runs through motor mounting part 1a, and side is stretched out in its lower section.In the end of stretching out of this driving shaft 14, fixing drive pulley 15.The diameter of drive pulley 15 is less than the major diameter part 12b of coiling belt pulley 12, and between drive pulley 15 and major diameter part 12b, volume is hung first driving belt 16.Therefore can be delivered to the rotation of driving shaft 14 on the coiling belt pulley 12 with deceleration regime.
As Fig. 5, shown in Figure 6, pinch wheel 20 and as the capstan 21 of turning axle be configured in adjacent to each otherly chassis 1 above.Pinch wheel 20 and capstan 21 are positioned at the place ahead along tape 7 direction of travel with respect to magnetic head 5.But pinch wheel 20 free rotary ground supportings are on pinch roller arm 22.Roller arm 22 by pivot 23 rotatably pivot prop up on chassis 1.Therefore, pinch wheel 20 can be a fulcrum with pivot 23, the position of between itself and capstan 21, tape 7 clampings being sent to and and the position of readiness that breaks away from of capstan between rotate.
As Fig. 1, shown in Figure 2, on above-mentioned capstan 21, fixing flywheel 26 as rotary body.The belt pulley part 27 that flywheel 26 is made by synthetic resin and overlap these metal counterweight plectanes 29 above belt pulley part 27 and constitute.By with the method that is pressed into, the wheel hub 28 on the rotation center part that is arranged on belt pulley part 27 highlightedly is contained in the center pit 29a of this counterweight plectane 29, just make counterweight plectane 29 as a whole with 27 one-tenth of belt pulley parts.And, in this wheel hub 28, being pressed into it capstan 21 of rotation with being integral, an end 21a of this capstan 21 stretches out certain-length below wheel hub 28.
But such capstan 21 free rotary ground supportings are on chassis 1.Below this supporting structure is described.As shown in Figures 1 and 2, chassis 1 has all-in-one-piece, the bearing portions 33 that wall thickness increases, and capstan 21 is that direction can be entrenched in this bearing portions 33 with rotating freely at axle.In the embedding bearing portions 33, slidably join by the following of top and bearing portions 33 chimeric by this and flywheel 26 all-in-one-pieces first neutral gear 30 below chassis 1 for capstan 21.
Capstan 21 stretches out above chassis 1 with the part of flywheel 26 opposite sides, but the extension of this capstan 21 constitutes the tape retained part 35 of pinch wheel 20 clutches ground crimping.When being pressed into above-mentioned playback bar 6, then tape 7 is pressed between retained part 35 and the pinch wheel 20, make this tape 7 walkings.
On the outer circumference surface of the tape retained part 35 of capstan 21, form along the circumferential direction continuous embedded grooves 36.Embedded grooves 36 is equipped with the retaining ring 37 that teflon is made in connection with the upper surface of bearing portions 33 in this embedded grooves 36.This retaining ring 37 can join slidably with the upper surface of bearing portions 33, can prevent that capstan 21 from withdrawing to the below of bearing portion 33.Between this retaining ring 37 and above-mentioned flywheel 26 all-in-one-pieces first neutral gear 30, clip bearing portions 33,, determined the axial location of capstan 21 by this structure.
Between the small diameter portion 12a of the belt pulley part 27 of flywheel 26 and coiling belt pulley 12, volume is hung second driving belt 38.The diameter of belt pulley part 27 made work energetically small diameter portion 12a, the result is that the rotation of above-mentioned driving shaft 14 is delivered on the capstan 21 through double reduction.Second driving belt 38 has across between belt pulley part 27 and small diameter portion 12a, and is parallel mutually, the advancing side 38a of extension and slack side 38b.As shown in Figure 3, the configuration space between advancing side 38a and the slack side 38b is along with expanding before belt pulley part 27 1 sides and then gradually.
As shown in Figure 1 to Figure 3, below chassis 1, the supporting member made from synthetic resin 40 is installed, but an end 21a free rotary ground supporting of capstan 21 is on supporting member 40.Supporting member 40 is provided with the tongue piece portion 41 of seeing shape slightly triangular in shape below chassis 1.The leading section of the tapered of tongue piece portion 41 is integrally formed into the axle support 42 that wall thickness increases.This support 42 is provided with through hole 43, and an end 21a of capstan 21 is entrenched in the through hole 43, and can be that direction rotates freely along axle.
Be integrally formed into the abutment wall 45 of arc-shaped bend at the end with axle support 42 opposite sides of tongue piece portion 41.This abutment wall 45 surrounds in the periphery of flywheel 26, and the both ends of abutment wall 45 form fixed part 46a, 46b respectively.Fixed part 46a, the pair of screws mount pad 47a that is provided with highlightedly below 46b and the chassis 1, the 47b overlaid, respectively by screw 48 with fixed part 46a, 46b fastens.By this fixed sturcture, 40 of supporting members and chassis 1 constitute with being integral, and capstan 21 is bearing on the chassis 1 by two places that separate vertically, thereby can prevent that capstan from tilting with respect to chassis 1.Under the situation of present embodiment, axle the top of support 42 of tongue piece portion 41 contacting with the following of flywheel 26 slidably.
As shown in Figure 4, the tongue piece portion 41 of bearing capstan 21 is that suspended wall is bearing on the chassis 1 overhangingly, and extend between the advancing side 38a of second driving belt 38 and slack side 38b the end that is connected with its abutment wall 45.Second driving belt, 38 volumes that supporting member 40 is not positioned on the belt pulley part 27 are hung the outside partly, and are widely empty around the belt pulley part 27.And the advancing side 38a of second driving belt 38 and slack side 38b and extension, this advancing side 38a and slack side 38b do not enter the outside that is positioned at abutment wall 45 between abutment wall 45 and the chassis 1. with forming circular-arc abutment wall 45 cross-shaped attitudes
Because this structure, second driving belt 38 is wound on the belt pulley part 27 of flywheel 26, or when belt pulley part 27 was taken off, supporting member 40 can not make troubles to operation, can the coiling work of second driving belt 38 easily be loaded onto operation or take off operation.
The following describes a capstan 21 and be assembled into The One On The Chassis program.
At first, capstan 21 and flywheel 26 are become one, under this state, capstan 21 side below chassis 1 is inserted by bearing portions 33 by being pressed in advance.So the tape retained part of capstan 21 35 stretches out above chassis 1 through bearing portions 33, retaining ring 37 is installed in 36 li of embedded grooves on the outer garden side face of this tape retained part 35, the upper surface of retaining ring 37 and bearing portions 33 is contacted.Because this contact bearing part 33 is clamped between first neutral gear 30 of retaining ring 37 and flywheel 26, thereby determined the axial location of capstan 21.
Bottom with capstan 21 embeds in the through hole 43 of supporting member 40 then.Make the fixed part 46a of supporting member 40, the screw mount pad 47a on 46b and chassis 1,47b coincides, and is fixed on here with screw 48.By this fixed sturcture, two places that capstan 21 just separates vertically are bearing on the chassis 1.
After like this capstan 21 being installed, just second driving belt 38 is wound on the belt pulley part 27 of flywheel 26, thus, a series of operation has just been finished.
According to the above-mentioned first embodiment of the present invention, because the bearing portions 33 that is supporting capstan 21 is clamped between the retaining ring 37 on this capstan 21 and first neutral gear 30, no matter, can both bear the load that is delivered to flywheel 26 on the capstan 21 by bearing portions 33 so capstan 21 has with respect to chassis 1 towards vertically or towards the inclination of horizontal any direction.
Therefore, the supporting member 40 of an end 21a of supporting capstan 21 does not need to support energetically the load of flywheel 26, as long as an end 21a of supporting capstan 21 makes capstan 21 not run-off the straights just passable.Thereby the load of supporting member 40 is just alleviated, so that support member 40 can form is thin and small-sized, this supporting member 40 can prevent bigger outstanding in 1 below, chassis.
And, owing to utilize two parts on the capstan 21, the load transfer of flywheel 26 to bearing portions 33, so also do not need to bear the special parts that flywheel 26 loads are used.
Therefore just have and to do above-mentioned supporting member 40 thinly, can also make the whole slimming of device, also can make simplifying the structure of capstan 21 supporting parts, can reduce advantages such as cost.
The present invention is not limited to the first above-mentioned embodiment, and Fig. 7 represents the second embodiment of the present invention.
Second embodiment mainly is that the installation site with respect to capstan 21 of supporting member 61 is different with above-mentioned first embodiment, and other structure in addition is all identical with first embodiment.In a second embodiment, the structure division identical with above-mentioned first embodiment all uses prosign, and omitted the explanation to it.
As shown in Figure 7, with the method that is pressed into the hub 28 of flywheel 26 is contained on the end 21a of capstan 21.And first neutral gear 30 is made another parts different with flywheel 26, is contained on the capstan 21 with this flywheel 26 with being pressed into respectively.First neutral gear 30 is in than flywheel 26 more is partial on the position of chassis 1 side, and the upper surface of first neutral gear 30 and the following of chassis 1 can contact slidably.Like this, bearing portions 33 just is sandwiched between the retaining ring 37 and first neutral gear 30.
With means such as being pressed into above-mentioned supporting member 61 is fixed on the periphery of the capstan 21 between first neutral gear 30 and the flywheel 26.This supporting member 61 is provided with and is the tabular portion of bearing 62 and is positioned at a pair of fixed part 63a that this bears portion 62 two ends, 63b.Bear portion 62 at fixed part 63a, be provided with between the 63b and be integral the axle support 64 that the ground wall thickness increases, be provided with through hole 65 on this support 64, capstan 21 can be that direction is entrenched in the through hole 65 rotationally along axle.Fixed part 63a, 63b is fixed on screw supporting base 47a below the chassis 1 with screw 48, on the 47b.
Therefore, the supporting member 61 of present embodiment is by with respect to the two supports on chassis 1.
In the present embodiment, owing to flywheel 26 stretches out from the below of supporting member 61 fixed part 63b on one side, so on flywheel 26, be provided with the through hole 67 that screw 48 passes through.
As second embodiment of this structure,, still can be clipped in bearing portions 33 between the retaining ring 37 and first neutral gear 30 even supporting member 61 is configured under the situation between flywheel 26 and the chassis 1.Like this, the load that is delivered to the flywheel 26 on the capstan 21 can be born by bearing portions 33, and the load of supporting member 61 just reduces.
Be positioned at the outside of supporting member 61 again owing to flywheel 26, thus second driving belt, 38 volumes are being suspended on the belt pulley part 27 of flywheel 26, or opposite, when it was taken off, supporting member 61 can not make troubles to operation.Thereby can easily carry out the volume extension of driving belt 38 and take off operation, simultaneously, can support capstan 21 securely with the state fixed bearing member 61 of two end bearings.
In the above-mentioned enforcement side, chassis and supporting member are all made with synthetic resin, but the present invention is not limited to this, make also passable with metal blank etc.
In addition, supporting member and flywheel or neutral gear are joined, between them, also can have the gap.
The turning axle that is driven by the motor rotation in the rotating driving device of the present invention is not particularly limited the capstan in sound-track engraving apparatus, and for example the rotary tube of video tape recorder can be implemented too.
Since more than the present invention of being described in detail, can bear the load of rotary body by the bearing portions on chassis, as long as supporting rotating shaft itself is just impassable obliquely so the supporting member of supporting rotating shaft can make turning axle, thereby the load that can alleviate this supporting member.Like this, just can make supporting member thinly and small-sized, this supporting member can prevent around the chassis outstanding significantly.And, owing to utilize two parts on the turning axle that the load of rotary body is passed to bearing portions, just do not need to bear the special parts that this rotary body load is used yet.
Therefore can do above-mentioned supporting member thinly, can make the whole slimming of device simultaneously, make the simplifying the structure of supporting part of turning axle, can reduce manufacturing cost.
Claims (1)
1, a kind of rotating driving device, wherein, make turning axle (35) but free rotary ground supporting in the bearing portions (33) that is located on the chassis (1), make the two ends of this turning axle (35) protrude in the two sides side on chassis (1), rotary body (26) and retaining member (37) are installed on above-mentioned turning axle (35), by this rotary body (26) and retaining member (37) bearing portions (33) is clipped in the middle, to forbid that turning axle (35) moves axial, described rotary body (26) is rotated driving by drive source (13), it is characterized in that:
The supporting member (40) that will have through hole (43) is fixed in chassis (1), by above-mentioned through hole (43), but the end of described rotary body (26) side of free rotary ground supporting turning axle (35).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5057484A JPH06274970A (en) | 1993-03-17 | 1993-03-17 | Rotary drive device |
| JP57484/93 | 1993-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092545A CN1092545A (en) | 1994-09-21 |
| CN1045837C true CN1045837C (en) | 1999-10-20 |
Family
ID=13056992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93109569A Expired - Fee Related CN1045837C (en) | 1993-03-17 | 1993-08-02 | Rotation driving apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH06274970A (en) |
| KR (1) | KR940022465A (en) |
| CN (1) | CN1045837C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5079566B2 (en) * | 2008-03-27 | 2012-11-21 | 日本電産サンキョー株式会社 | Card transport mechanism and card reader |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2022904A (en) * | 1978-06-09 | 1979-12-19 | Philips Nv | Recording and playback apparatus with a tiltable capstan |
| DE3009644A1 (en) * | 1980-03-13 | 1981-09-24 | Robert Bosch Gmbh, 7000 Stuttgart | DRIVE ARRANGEMENT FOR A MAGNETIC TAPE DEVICE |
| US4725152A (en) * | 1986-05-20 | 1988-02-16 | U.S. Philips Corporation | Adjustable shaft support, and tape recorder with such a support |
| DE3811725A1 (en) * | 1988-04-08 | 1989-10-19 | Philips Patentverwaltung | DEVICE FOR ADJUSTING THE AZIMUT POSITION OF A TONE SHAFT IN A MAGNETIC TAPE DEVICE |
| GB2236611A (en) * | 1989-09-12 | 1991-04-10 | Tanashin Denki Co | Linkage mechanism between a magnetic head and a pinch roller of a tape recorder |
-
1993
- 1993-03-17 JP JP5057484A patent/JPH06274970A/en not_active Withdrawn
- 1993-07-09 KR KR1019930012943A patent/KR940022465A/en not_active Application Discontinuation
- 1993-08-02 CN CN93109569A patent/CN1045837C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2022904A (en) * | 1978-06-09 | 1979-12-19 | Philips Nv | Recording and playback apparatus with a tiltable capstan |
| DE3009644A1 (en) * | 1980-03-13 | 1981-09-24 | Robert Bosch Gmbh, 7000 Stuttgart | DRIVE ARRANGEMENT FOR A MAGNETIC TAPE DEVICE |
| US4725152A (en) * | 1986-05-20 | 1988-02-16 | U.S. Philips Corporation | Adjustable shaft support, and tape recorder with such a support |
| DE3811725A1 (en) * | 1988-04-08 | 1989-10-19 | Philips Patentverwaltung | DEVICE FOR ADJUSTING THE AZIMUT POSITION OF A TONE SHAFT IN A MAGNETIC TAPE DEVICE |
| GB2236611A (en) * | 1989-09-12 | 1991-04-10 | Tanashin Denki Co | Linkage mechanism between a magnetic head and a pinch roller of a tape recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092545A (en) | 1994-09-21 |
| KR940022465A (en) | 1994-10-20 |
| JPH06274970A (en) | 1994-09-30 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |