CN1259662C - Reel clutch of tape recorder - Google Patents
Reel clutch of tape recorder Download PDFInfo
- Publication number
- CN1259662C CN1259662C CNB2003101007809A CN200310100780A CN1259662C CN 1259662 C CN1259662 C CN 1259662C CN B2003101007809 A CNB2003101007809 A CN B2003101007809A CN 200310100780 A CN200310100780 A CN 200310100780A CN 1259662 C CN1259662 C CN 1259662C
- Authority
- CN
- China
- Prior art keywords
- tape
- reel
- gear
- tape reel
- clutch
- 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
- G11B15/26—Driving record carriers by members acting directly or indirectly thereon
- G11B15/32—Driving record carriers by members acting directly or indirectly thereon through the reels or cores on to which the record carrier is wound
-
- 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
- G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
-
- 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
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/50—Controlling, regulating, or indicating speed by mechanical linkage, e.g. clutch
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Landscapes
- Mechanical Operated Clutches (AREA)
- Winding Of Webs (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Disclosed is a reel clutch of a tape recorder. A plate spring is positioned between a reel gear and a reel disc of a reel disc assembly which is mounted on a deck of a tape recorder, and a stopper reel is provided on the reel disc to restrain the engaging height of the plate spring so that a torque is generated by the frictional contact between the reel disc and the plate spring, whereby assembly productivity can be enhanced and manufacturing costs can be reduced.
Description
Technical field
The present invention relates to a kind of magnetic recording/reproducing apparatus, especially relate to a kind of tape reel device that is used to drive the magnetic tape cassette of magnetic recording/reproducing apparatus.
Background technology
Generally speaking, magnetic recording/reproducing apparatus records information on recording medium such as the tape, and also the information of record is reappeared from recording medium.The example of this magnetic recording/reproducing apparatus mainly comprises video cassette recorder (VCR) and shooting recording all-in-one.
With reference to figure 1, traditional magnetic recording/reproducing apparatus comprises main tape transport mechanism 2, and head drum 1 is rotatably installed on it; Inferior tape transport 3, it can load and unloading with respect to main tape transport mechanism; A pair of tape reel (reel) assembly 4, they can rotate and drive the tape reel of magnetic tape cassette with respect to inferior tape transport 3; Tape reel assembly drive means 7, it receives driving force and selectively the driving force that receives is delivered to described a pair of tape reel assembly 4 from capstan motor 5 at main tape transport mechanism 1; And driving force transfer unit 6, it is delivered to tape reel assembly drive means 7 with driving force from capstan motor 5.
Tape reel assembly 4 comprises for band portion tape reel platform (left-hand side among Fig. 1), is used for supplying with tape and winding part tape reel platform (right-hand side among Fig. 1) from magnetic tape cassette, is used for wound tape when supplying with.
Driving force transfer unit 6 comprises capstan gear 6a, and it is by the driving that links to each other with the shaft gear 5a of capstan motor 5, and tooth belt 6b, is used for driving force is delivered to tape reel assembly drive means 7 from capstan gear 6a.
Tape reel assembly drive means 7 comprises belt pulley gear unit 7a, and it links to each other with tooth belt; Idle pulley 7b, it is by the driving that is associated with belt pulley gear unit 7a; And pivot plate 7c, it links to each other belt pulley gear unit 7a with idle pulley 7b.
As shown in Figure 2, pivot plate 7c can have elastic part 7d, and this elastic part 7d is with the predetermined pattern cutting, so that as leaf spring at the core of pivot plate 7c.Because elastic part 7d utilizes predetermined friction force to contact with idle pulley 7b, when idle pulley 7b changed its rotation direction, pivot plate 7c stood to make the torque of its pivot.Therefore, idle pulley 7b can be connected to left and right sides tape reel assembly 4 selectively.
In said structure, a part of rotating force of belt pulley gear 11 is passed to clutch gear 13 by the magnetic force that produces between magnet 12 and the metalwork 14.Because rotating force can reduce when specifying tape reel assembly 4 when power is delivered to through idle pulley 7b, so the tape reel of magnetic tape cassette can utilize correct power rotation.
Yet, in the traditional magnetic recording equipment of said structure, because some elements provide predetermined friction force need for idle pulley 7b, so that pivot pivot plate 7c, so total becomes complicated.In addition, additional element also need be given the torque of magnetic tape cassette tape reel with control, so the structure of magnetic recording/reproducing apparatus is also more complicated.And owing to the magnet that uses in the traditional magnetic recording equipment costs an arm and a leg, so manufacturing cost increases.
As an alternative, offer the friction force generator of belt pulley gear unit 7a, promptly torque generator also can offer a pair of tape reel assembly 4 as an alternative.Yet the problem of Cun Zaiing is that such replacement also needs the more complicated expensive components of structure like this.
Summary of the invention
Therefore, an aspect of the embodiment of the invention provides a kind of tape reel assembly drive means and tape reel assembly of magnetic recording/reproducing apparatus, and it has improved simple structure.
In order to realize above-mentioned aspect, the preferred embodiments of the present invention provide a kind of reel clutch of magnetic tape recorder, it is installed in the tape reel board component, described tape reel board component is installed on the tape transport of magnetic tape recorder and has tape reel gear and tape plate, described reel clutch is used to produce the torque of adjusting the tape tensioning, controls the travelling speed of tape thus.Described reel clutch comprises the leaf spring that is positioned between tape reel gear and the tape plate; And the retainer tape reel, it engages so that limit the jointing altitude of leaf spring with the tape plate, thus tape plate and leaf spring contact with each other to produce torque by friction.
In having the reel clutch according to the embodiment of the invention of said structure, the bottom surface of tape plate preferably is provided with serration, their form can with the leaf spring rubbing contact.
In addition, preferably, leaf spring comprises plate body, and this plate body is formed with one or more slit with predetermined pattern, thereby leaf spring freely moves by external pressure elasticity.
In addition, preferably, between tape plate and leaf spring, be provided with lubricant.
According to a further aspect in the invention, provide a kind of tape transport of magnetic tape recorder, it comprises above-mentioned reel clutch.
The tape transport of above-mentioned magnetic tape recorder further comprises the tape reel assembly drive means, clutch pack is installed in this tape reel assembly drive means and is had idle pulley and clutch gear, be used to produce the torque that drives tape, wherein said clutch pack comprises: be positioned at the leaf spring between clutch gear and the idle pulley; Rotating main body, it engages with idle pulley so that limit the jointing altitude of leaf spring, produces torque thereby clutch gear and leaf spring contact with each other by friction.
Description of drawings
Above-mentioned and other aspect of the present invention, characteristics and advantage will be by becoming more obvious below in conjunction with the accompanying drawing description of preferred embodiments, wherein:
Fig. 1 is the schematic plan view of traditional magnetic recording equipment;
Fig. 2 is the sectional view of the tape reel assembly drive means among Fig. 1;
Fig. 3 is the skeleton view of assembly before assembling of magnetic recording/reproducing apparatus according to the preferred embodiment of the invention;
Fig. 4 is the skeleton view of assembly after assembling of magnetic recording/reproducing apparatus according to the preferred embodiment of the invention;
Fig. 5 is the skeleton view of the top tape reel among Fig. 3;
Fig. 6 is the sectional view of the tape reel assembly of another preferred embodiment according to the present invention;
Fig. 7 is the skeleton view of the tape reel gear among Fig. 6;
Fig. 8 is the sectional view of the tape reel assembly drive means of the magnetic recording/reproducing apparatus of a preferred embodiment again according to the present invention.
Embodiment
Below with reference to the accompanying drawing and the preferred embodiment of the present invention tape reel assembly and the tape reel assembly drive means of magnetic recording/reproducing apparatus are according to the preferred embodiment of the invention described.
With reference to figure 3 and Fig. 4, the tape reel assembly of magnetic recording/reproducing apparatus comprises bottom tape reel 31 according to the preferred embodiment of the invention, top tape reel 33 (or tape plate) and clutch device 37, its middle and lower part tape reel 31 can rotate with respect to the stationary axle 2a on the main tape transport mechanism 2, top tape reel 33 joins with the top of bottom tape reel 31 (or retainer tape reel), and clutch device 37 is arranged between top tape reel 33 and the bottom tape reel 31.
The top of top tape reel 33 is outstanding to be reservation shape, thereby the tape reel of magnetic tape cassette is securely taken one's seat thereon.Be formed with circumferential rib 33b around the lower surface of top tape reel 33, circumferential rib 33b is outstanding so that elasticity promotes the outer rim of clutch device 37 downwards.And, as shown in Figure 5, on the surface of rib 33b, be formed with serration with predetermined roughness.Described serration forms with circular pattern along the surface of rib 33b.
The center of clutch device 37 contacts with the outshot 31c of bottom tape reel 31, is flexibly upwards pushed away thus.The outer rim of clutch device 37 is the downward resiliency urged of quilt by contacting with the rib 33b of top tape reel 33.Because clutch device 37 and the contact between the tape reel 31,33 up and down, the revolving force of tape reel gear 35 are delivered to tape reel 31,33 up and down.Here, described revolving force not exclusively is delivered to up and down tape reel 31,33, but according to the degree of the friction force that causes by clutch device 37 and the degree transmission to reduce.
Preferably, between top tape reel 33 and clutch device 37, applied the lubricant (not shown).More preferably, described lubricant is applied on the upper surface of the lower surface of top tape reel 31 and clutch device 37 at such point, contacts with the outer rim of clutch device 37 at the described some circumferential rib 33b of place.
In the tape reel assembly according to the magnetic recording/reproducing apparatus with said structure of first preferred embodiment of the invention, elastic clutch spare 37 is fastened firmly on the tape reel gear 35 and does not swing or move.And because clutch device 37 is positioned at accurate height by the support of tape reel 31,33 up and down, so the elasticity of clutch device 37 seldom changes, thereby can keep constant substantially with the friction force of adjacent elements.Therefore, be delivered to up and down the driving force of tape reel 31,33 from tape reel gear 35 and can keep constant degree substantially.In addition, because the tape reel assembly has simple structure and do not need expensive magnet, so manufacturing cost reduces.
With reference now to Fig. 6 and Fig. 7,, the tape reel assembly according to the magnetic recording/reproducing apparatus of second preferred embodiment of the invention is described.In whole description, use identical label with Fig. 3 components identical in Fig. 5.
As shown in Figure 6 and Figure 7, have sensor here, promptly light-receiving/emission sensor 40, are used for sensing tape reel gear 135 rotation status with respect to inferior tape transport 3.As mentioned above, tape reel gear 135 has gear teeth 135a, and described gear teeth 135a is meshed with the idle pulley 7b (Fig. 1) of tape reel assembly drive means.The driving force that passes to tape reel gear 135 by idle pulley 7 utilizes the intervention of clutch device 37 to produce torque, thereby top tape reel 33 is rotated at a predetermined velocity.
Simultaneously, tape reel gear 135 has a plurality of sensings hole 135c that forms along sense of rotation.Thereby the light that sensing hole 135c is penetrated from light-receiving/emission sensor 40 can pass through them.As shown in Figure 7, sensing hole 135c is uniformly-spaced to form along the sense of rotation of tape reel gear 135.
In said structure, light-receiving/emission sensor 40 is towards tape reel gear 135 emission light, and reception is from the light of tape reel gear 135 reflections, so that the rotation status and the speed of sensing tape reel gear 135.Because except the place that forms sensing hole 135c, light is from 135 reflections of tape reel gear, thus light-receiving/emission sensor 40 can by from the light of tape reel gear 135 reflections repeat to receive and do not have receive the rotation status of determining tape reel gear 135.When tape reel gear 135 did not rotate, light-receiving/emission sensor 40 can receive light unceasingly or not receive light at all, recognizes tape reel gear 135 thus and does not rotate.Tape reel gear 135 is preferably made by white material, and this material is reflected light effectively, although other colors also can be used.
For above-mentioned tape reel assembly, by will being used for reflected light on reflective film some part simply attached to tape reel gear 135, or replacing adhering to extra light absorbing material by forming sensing hole 135c, the tape reel assembly can not need extra element and make.
With reference to figure 8, the tape reel assembly drive means according to third embodiment of the invention is described below.As shown in Figure 8, the tape reel assembly drive means comprises main drive gear 50, and this main drive gear 50 is rotatable with respect to main tape transport mechanism 2; Swingle 60, this swingle 60 is rotatable with respect to the top of main drive gear 50; Idle pulley 70 with main drive gear 50 engagements; Clutch gear 80 with idle pulley 70 coaxial arrangement; Rotatably be supported on the rotating main body 90 on the swingle 60; And elastic clutch spare 100.
Main drive gear 50 rotatably is supported on the stationary axle 2a of main tape transport mechanism 2, so that can be by the driving force rotation that comes from capstan motor 5 (Fig. 1) transmission.The belt pulley part 53 that links to each other with tooth belt 6b is arranged on the lower end of main drive gear 50.Gear parts 55 and idle pulley 70 are engaged to the top of belt pulley part 53.Have holder 57 on the top of axle 2a and be used to prevent that main drive gear 50 from separating with axle 2a.
One end of swingle 60 is supported by holder 57, and the other end at swingle 60 is formed with stationary shaft 61 simultaneously.Stationary shaft 61 is arranged on the bottom of swingle 60.As shown in Figure 1, swingle 60 rotations are so that link to each other with described a pair of tape reel assembly 4 selectively.The revolving force of swingle 60 is delivered to idle pulley 70 respectively from main drive gear 50, clutch device 100 and rotating main body 90.When having friction force between rotating main body 90 and the swingle 60, produce rotating torques at swingle 60, thereby swingle 60 is rotated.
Idle pulley 70 has gear parts 71, gear parts 71 and main drive gear 50 engagements.Idle pulley 70 rotatably meshes with the neighboring of rotating main body 90.Idle pulley 70 has upper flange 73, and the outer rim that this upper flange 73 is pushed clutch device 100 exclusively by contact is fastened in the mobile restriction projection 91 that is formed on rotating main body 90 lower ends simultaneously.Because the friction between the contact area of upper flange 73 and clutch device 100 has produced torque, and the torque rotation of clutch gear 80 by producing.
Clutch gear 80 and described a pair of tape reel assembly 4 one of them engagement are so that transmission of drive force.Clutch gear 80 is fastened to the outside of clutch device 100.
Rotating main body 90 corresponding stationary shaft 61 can rotate, and supported can vertical moving.Rotating main body 90 also has lock slots 93, and circle securely cooperates with lock slots 93 in the clutch device 100.Because the elastic restoring force of clutch device 100, rotating main body 90 stands the effect of the power on " A " direction, is pushed thus and utilizes predetermined friction to contact with swingle 60 on top.Rotating main body 90 rotates integratedly with clutch device 100.
Clutch device 100 is provided for by preventing that driving force from 4 directly transmitting and without any the rotational speed of adjusting tape reel assembly 4 from main drive gear 50 to the tape reel assembly.Clutch device 100 is used for the driving force from main drive gear 50 was reduced before sending it to the tape reel assembly.Preferably, clutch device 100 is a leaf spring, and it can be out of shape and recover.The outside of clutch device 100 is fastened on the clutch gear 80, and more preferably, clutch device 100 is fastened on the clutch gear 80 integratedly by insert molding.The center of clutch device 100 securely is locked in the lock slots 93 of rotating main body 90.When clutch device 100 by when idle pulley 73 is pressed, the outer rim of clutch device 100 stands the elastic restoring force on " B " direction, the elastic restoring force on " A " direction is stood at the center of clutch device 100 simultaneously.As a result, the contact area between clutch device 100 and idle pulley 70 can access " clutch effect " in other words, and driving force was regulated before being transmitted with being lowered.In addition, because the elastic restoring force on " A " direction, rotating main body 90 and swingle 60 rotate integratedly with respect to main drive gear 50.
Above-mentioned according to tape reel assembly drive means of the present invention in, single clutch device 100, be single leaf spring, not only regulate the driving force that is delivered to tape reel assembly 4 from main drive gear 50 as clutch coupling, but also as the torque generator that can make swingle 60 conversion sense of rotation.Therefore, expensive components can be saved, and two torques can be obtained in identical zone such as magnet.Therefore, because the minimizing of required number of spare parts, and the packaging technology simplification, so manufacturing cost reduces widely.
Although several preferred embodiments of the present invention has been described with reference to the drawings above,, the present invention is not limited to these embodiment.Should be appreciated that for the ordinary skill in the art, under the situation of the spirit and scope that do not break away from claim qualification of the present invention, can carry out modification and change these embodiment.
Claims (8)
1, a kind of reel clutch of magnetic tape recorder, it is installed in the tape reel board component, described tape reel board component is installed on the tape transport of magnetic tape recorder and has tape reel gear and tape plate, described reel clutch is used to produce torque so that adjust the tensioning of tape, control the travelling speed of tape thus, wherein said reel clutch comprises:
Be positioned at the leaf spring between tape reel gear and the tape plate; And
The retainer tape reel, it engages so that limit the jointing altitude of leaf spring with the tape plate, produces torque thereby tape plate and leaf spring contact with each other by friction.
2, it is outstanding that reel clutch according to claim 1, the bottom surface of wherein said tape plate are provided with zigzag, described zigzag is outstanding form can with the leaf spring rubbing contact.
3, reel clutch according to claim 1, wherein said leaf spring comprises the plate main body, described plate main body is formed with one or more slits with predetermined pattern, thus leaf spring can flexibly move by the external force freedom.
4, reel clutch according to claim 1 wherein is provided with lubricant between tape plate and leaf spring.
5, reel clutch according to claim 1, wherein said tape reel board component also comprises light-receiving/emission sensor, and the tape reel gear also comprises a plurality of sensing holes that form along sense of rotation.
6, reel clutch according to claim 5, wherein said light-receiving/emission sensor can be towards tape reel gear emission light, and when light had passed described one or more sensings hole, detection was not returned from the surface reflection of tape reel gear from the light and the detection light of the surface reflection of tape reel gear.
7, a kind of tape transport of magnetic tape recorder comprises as each the described reel clutch among the claim 1-6.
8, the tape transport of magnetic tape recorder as claimed in claim 7, further comprise the tape reel assembly drive means, clutch pack is installed in this tape reel assembly drive means and is had idle pulley and clutch gear, be used to produce the torque that drives tape, wherein said clutch pack comprises:
Be positioned at the leaf spring between clutch gear and the idle pulley;
Rotating main body, it engages with idle pulley so that limit the jointing altitude of leaf spring, produces torque thereby clutch gear and leaf spring contact with each other by friction.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR200261821 | 2002-10-10 | ||
| KR10-2002-0061821A KR100465167B1 (en) | 2002-10-10 | 2002-10-10 | A reel clutch of tape recorder |
| KR200268836 | 2002-11-07 | ||
| KR200271728 | 2002-11-18 | ||
| KR20033426 | 2003-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1497567A CN1497567A (en) | 2004-05-19 |
| CN1259662C true CN1259662C (en) | 2006-06-14 |
Family
ID=34256378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101007809A Expired - Fee Related CN1259662C (en) | 2002-10-10 | 2003-10-09 | Reel clutch of tape recorder |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100465167B1 (en) |
| CN (1) | CN1259662C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100485843B1 (en) * | 2002-11-07 | 2005-04-28 | 삼성전자주식회사 | Real-apparatus for magnetic recording/reading apparatus |
| KR100797177B1 (en) * | 2004-06-18 | 2008-01-23 | 삼성전자주식회사 | Magnetic recording/reading apparatus and Reel assembly braking method |
| JP5101028B2 (en) * | 2006-03-24 | 2012-12-19 | 日本発條株式会社 | Belleville spring manufacturing method and clutch device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5225581Y2 (en) * | 1973-10-30 | 1977-06-10 | ||
| JPH0554478A (en) * | 1991-08-21 | 1993-03-05 | Sony Corp | Friction clutch mechanism |
| JPH0554496A (en) * | 1991-08-27 | 1993-03-05 | Sony Corp | Tape player |
| KR0174974B1 (en) * | 1995-11-28 | 1999-04-15 | 배순훈 | Device for driving a reel of a tape recorder |
| KR100196852B1 (en) * | 1996-06-28 | 1999-06-15 | 전주범 | A reel driving apparatus for a tape recorder |
-
2002
- 2002-10-10 KR KR10-2002-0061821A patent/KR100465167B1/en not_active IP Right Cessation
-
2003
- 2003-10-09 CN CNB2003101007809A patent/CN1259662C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1497567A (en) | 2004-05-19 |
| KR100465167B1 (en) | 2005-01-13 |
| KR20040032615A (en) | 2004-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060614 Termination date: 20091109 |