KR900009087Y1 - Reel assembly - Google Patents
Reel assembly Download PDFInfo
- Publication number
- KR900009087Y1 KR900009087Y1 KR2019870002843U KR870002843U KR900009087Y1 KR 900009087 Y1 KR900009087 Y1 KR 900009087Y1 KR 2019870002843 U KR2019870002843 U KR 2019870002843U KR 870002843 U KR870002843 U KR 870002843U KR 900009087 Y1 KR900009087 Y1 KR 900009087Y1
- Authority
- KR
- South Korea
- Prior art keywords
- press
- shaft
- synthetic resin
- projection
- rotating
- Prior art date
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 17
- 239000000057 synthetic resin Substances 0.000 claims description 17
- 238000007373 indentation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/041—Details
- G11B23/044—Reels or cores; positioning of the reels in the cassette
Landscapes
- Pulleys (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 본 고안을 적용한 리일축의 정면도.1 is a front view of a rail axis to which the present invention is applied.
제 2 도는 동 리일축에 있어서의 구동축 사시도.2 is a perspective view of a drive shaft in the same shaft;
제 3 도는 동 구동축의 평면도.3 is a plan view of the drive shaft.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 구동축 2 : 리일 구동날개1: drive shaft 2: rail drive wing
11 : 축부 13 : 원통부11 shaft portion 13 cylindrical portion
15 : 돌기15: turning
본 고안은 합성수지제의 회전축을 합성수지제의 회전체에 압입하므로서 양자를 기계적으로 결합시키도록 한 축 압입형 회전구조체에 관한 것이다.The present invention relates to an axial indentation type rotary structure to mechanically couple the two by injecting the rotary shaft of the synthetic resin into the rotary body of the synthetic resin.
종래의 기계적 강도를 그다지 필요로 하지 않는 회전 구조체에 있어서는 회전축을 합성수지로 형성함과 동시에 회전체도 합성수지로 형성하여 이 양자를 압입으로 결합한 것이 많다.In a rotating structure that does not require much conventional mechanical strength, the rotating shaft is formed of a synthetic resin, and the rotating body is also formed of a synthetic resin.
이와같이 양자를 합성수지로 형성하여 양자를 압입에 의하여 결합하도록한 회전구조체의 대표적인 것으로서는 카세트식 테이프 레코더의 리일축을 들 수 있다.As a representative example of the rotating structure in which both are formed of a synthetic resin and the two are joined by indentation, the reel shaft of a cassette type tape recorder is mentioned.
리일축은 통상 합성수지제의 구동축과, 이 구동축에 결합되는 합성수지제의 리일 구동날개로 구성되어 있다.The rail shaft is usually composed of a drive shaft made of synthetic resin and a rail drive wing made of synthetic resin coupled to the drive shaft.
그리고, 종래의 리일축에 있어서는 리일 구동날개축에 구동축을 끼워 맞추기 위한 구동축보다 작은 직경의 끼워맞춤 구멍을 형성하여 이 구멍에 구동축을 압입시키고 있다.In the conventional rail shaft, a fitting hole having a diameter smaller than that of the driving shaft for fitting the driving shaft to the rail driving blade shaft is formed to press the driving shaft into the hole.
그러나, 상기와 같이 구성된 종래의 이른바 축 압입형 회전구조체에 있어서는 다음과 같은 문제가 있었다.However, the conventional so-called axial press-fit rotational structure constructed as described above has the following problems.
즉, 합성수지로 형성되 부품서로를 압입 결합시킨 경우는 금속제부품 상호간을 압입 결합시키는 경우에 비하여 크리이프 변형이 생기기 쉽고, 비교적 단시간에 상호 이탈되기기 쉽다는 것이다.In other words, when the parts are formed by synthetic resin and press-fitted to each other, creep deformation is more likely to occur than the case of press-fitted together between metal parts, and they are more likely to be separated from each other in a relatively short time.
그러므로, 통상은 압입력을 높게 설정하고 있다.Therefore, the pressure input is usually set high.
그러나, 이와같이 압입력을 높게 설정하면, 압입시의 작업성이 필연적으로 나빠진다. 또, 압입력이 지나치게 높을 때에는 끼워맞춤 구멍을 갖는 원통부가 갈라지게 되거나, 혹은 압입후의 크리이프 변형이 빨라져 단시간에 상호 이탈되기가 쉬운 문제가 있었다.However, if the press input is set high in this way, the workability at the press press will inevitably deteriorate. In addition, when the pressing force is too high, there is a problem that the cylindrical portion having the fitting hole is cracked or the creep deformation after the pressing is accelerated, so that it is easy to be separated from each other in a short time.
상기와 같이, 양 부품을 합성수지로 형성하고 또한 양부품을 압입에 의하여 결합한 종래의 회전 구조체에 있어서는, 압입력이 작으면 압입 결합의 신뢰성을 잃게되고, 결합의 신뢰성을 증가시키기 위하여 압입력을 높이면, 압입시의 작업성을 악화시키거나, 혹은 크리이프 변형을 가속시켜 반대로 결합의 신뢰성을 저하시키므로 전체적으로 결합의 신뢰성이 약하다는 문제가 있었다.As described above, in the conventional rotating structure in which both parts are made of synthetic resin and both parts are press-fitted together, if the push-in force is small, the reliability of the push-in joint is lost. However, there is a problem that the reliability of the bond is weak overall because the workability at the time of indentation is deteriorated, or the creep deformation is accelerated to decrease the reliability of the bond.
따라서, 본 고안은 합성수지임으로서 발생하는 상기 문제점을 해소할 수 있고, 신뢰성이 높은 압입결합을 실현할 수 있는 구조의 축압입형 회전 구조체를 제공함을 목적으로 한 것이다.Accordingly, an object of the present invention is to provide an axially pressurized rotary structure having a structure capable of solving the above-mentioned problems caused by being a synthetic resin and realizing a press-fit with high reliability.
본 고안은 합성수지제의 회전축과, 이 회전축을 압입시킬 끼워맞춤 구멍을 가진 합성수지제의 회전체로 구성되고, 상기 끼워맞춤 구멍의 내주면 또는 상기 회전축의 외주면중 어느 일방에 돌기가 형성된 축압입형 회전구조체에 있어서, 상기 돌기가 둘레방향에 긴 단부를 갖도록 형성된 것이다.The present invention consists of a synthetic resin rotary body having a rotary shaft made of a synthetic resin and a fitting hole for press-ining the rotary shaft, and an axial press-type rotary with projections formed on either the inner circumferential surface of the fitting hole or the outer circumferential surface of the rotating shaft. In the structure, the protrusion is formed to have a long end in the circumferential direction.
회전체에 형성된 끼워맞춤 구멍에 회전축을 압입하면, 압입후는 상기 돌기에 압입압력에 의한 응력이 집중한다.When a rotary shaft is press-fitted into the fitting hole formed in the rotating body, the stress by press-fitting pressure will concentrate on the said projection after press-fitting.
그러므로, 크리이프 변형은 먼저 이 돌기와 접촉하고 있는 상대축 부분에 일어나고, 이 크리이프 변형에 의하여 돌기가 상대측내에 압입된 상태로 된다.Therefore, the creep deformation occurs first in the relative shaft portion in contact with the protrusion, and the creep deformation causes the protrusion to be pressed into the counterpart.
따라서, 돌기의 존재로 회전체와 회전축과는 맞물림 결합상태로 된다.Therefore, in the presence of the projection, the rotating body and the rotating shaft are engaged with each other.
이하 도면에 따라 실시예를 설명한다.Embodiments will be described below with reference to the drawings.
제 1 도는 본 고안을 카세트식 테이프 레코더의 리일축에 적용한 예로서, 이 도면에 있어서 (1)은 합성수지로 형성된 구동축이며, (2)는 구동축(1)에 압입 결합된 합성수지제의 리일 구동날개를 표시하며, 구동축(1)은 측부(11)와 기어(12)로 구성되어 있다.1 is an example in which the present invention is applied to a rail shaft of a cassette type tape recorder, in which, (1) is a drive shaft formed of synthetic resin, and (2) is a rail drive blade made of synthetic resin press-fitted to the drive shaft (1). The drive shaft 1 is composed of a side portion 11 and a gear 12.
또한 리일구동날개(2)는 원통부(13)와 날개부(14)로 구성되어 있다.In addition, the rail driving blade 2 is composed of a cylindrical portion 13 and a wing portion (14).
그리고, 원통부(13)에 대하여 축부(11)가 압입 결합되어 있다.The shaft portion 11 is press-fitted to the cylindrical portion 13.
축부(11)의 축방향 중간위치 외주면에는 제 2 도 및 제 3 도에 표시한 바와같이 둘레방향에 연장한 선형상의 돌기(15)가 등간격으로 3개 형성되어 있다.Three linear projections 15 extending in the circumferential direction are formed at equal intervals on the outer circumferential surface of the axial direction intermediate position of the shaft portion 11 as shown in FIGS. 2 and 3.
따라서, 축부(11)는 돌기(15)를 가진 상태로 원통부(13)에 압입 결합되어 있게 된다.Therefore, the shaft portion 11 is press-fitted to the cylindrical portion 13 with the protrusion 15.
이와같이 된 구성에서는 압입후에 각 돌기(15)에는 타부분 보다 큰 힘이 가해진다.In this configuration, after the press-fitting, each of the protrusions 15 is applied with greater force than the other parts.
이 힘은 원통부(13)의 내주면에서 돌기(15)에 접촉하고 있는 부분에 반작용으로서 가해진다.This force is applied as a reaction to the part which contacts the protrusion 15 in the inner peripheral surface of the cylindrical part 13.
그러므로, 원통부(13)의 내주면으로 돌기(15)와 접촉하고 있는 부분의 크리이프 변형이 촉진되고 이 결과, 각 돌기(15)는 원통부(13)에 압입된 상태로 된다.Therefore, creep deformation of the portion that is in contact with the projection 15 on the inner circumferential surface of the cylindrical portion 13 is promoted, and as a result, each projection 15 is pressed into the cylindrical portion 13.
이와같이 돌기(15)를 형성하므로써 크리이프 변형에 차이를 발생시켜 축부(11)와 원통부(13)를 맞물림 결합시킬 수가 있다.By forming the protrusions 15 in this way, the creep deformation can be caused to engage the shaft portion 11 and the cylindrical portion 13 in engagement.
따라서, 압입후의 크리이프 변형으로 용이하게 상호간에 이탈되는 것을 효과적으로 방지할 수가 있다.Accordingly, it is possible to effectively prevent separation from each other easily due to creep deformation after indentation.
또, 상호간의 용이한 이탈을 억제할 수 있으므로 압입력도 종래만큼 높게할 필요가 없고 이 결과, 압입시의 작업성을 향상시킬수가 있고, 또 원통부(13)에 갈라짐을 발생시킬 염려도 없다.In addition, since easy separation between each other can be suppressed, the press-in input does not have to be as high as in the prior art, and as a result, workability at the press-in can be improved, and there is no fear of cracking in the cylindrical portion 13. .
또, 압입력을 작게 억제할 수 있으므로 상호간의 이탈의 시간적 변화를 극히 완만화 시킬수가 있다.In addition, since the pressure input can be suppressed small, the temporal change in the deviation from each other can be made extremely gentle.
또, 실시예와 같이 돌기(15)를 둘레방향으로 분리시켜 놓으면 비틀림 토크를 크게 할수 있어 한층 신뢰성이 풍부한 결합을 실현할 수 있다.In addition, if the projections 15 are separated in the circumferential direction as in the embodiment, the torsional torque can be increased, and a more reliable coupling can be realized.
또한, 본 고안은 상기 실시예에 한정되는 것은 아니다.In addition, this invention is not limited to the said Example.
즉, 상기 실시예에서는 돌기를 축부측에 형성하고 있으나, 원통부측의 내주면에 형성해도 무방하다.That is, although the protrusion is formed in the axial part side in the said Example, you may form in the inner peripheral surface of the cylindrical part side.
또한 돌기의 형성방법은 둘레방향에 세 개의 돌기가 직선적으로 형성되는 구성에 한정되지 않고 하나의 돌기이어도 되고, 또 선형상의 돌기가 아닌 이른바 소돌기를 둘레방향에 복수개 등간격으로 형성해도 좋다.The projection forming method is not limited to the configuration in which three projections are linearly formed in the circumferential direction, but may be one projection, or a so-called small projection may be formed in the circumferential direction at a plurality of equal intervals instead of the linear projection.
또한, 본 고안은 리일축에 한정되지 않고, 회전체 및 회전축을 합성수지로 형성하고, 양자를 압입 결합시키도록 한 회전구조체 전반에 적용됨은 물론이다.In addition, the present invention is not limited to the rail axis, it is applied to the entire rotating structure to form the rotating body and the rotating shaft with a synthetic resin, and to press-couple both.
이상과 같이 본 고안은 압입 끼워 맞춤면에 돌기를 형성함에 따라서 압입후의 크리이픕 형에 의한 상호간의 용이한 이탈 및 비틀림 토크의 저하를 방지할 수 있어 결합의 신뢰성을 향상시킬수가 있음과 동시에 압입력을 낮게하여 작업성을 향상시킬 수가 있다.As described above, according to the present invention, as the protrusions are formed on the press-fit fitting surface, it is possible to prevent the easy separation and the reduction of the torsional torque by the crevice type after the press-fitting, thereby improving the reliability of the joining and at the same time By lowering the workability can be improved.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870002843U KR900009087Y1 (en) | 1987-03-05 | 1987-03-05 | Reel assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870002843U KR900009087Y1 (en) | 1987-03-05 | 1987-03-05 | Reel assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880018534U KR880018534U (en) | 1988-10-29 |
KR900009087Y1 true KR900009087Y1 (en) | 1990-09-29 |
Family
ID=19260330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019870002843U KR900009087Y1 (en) | 1987-03-05 | 1987-03-05 | Reel assembly |
Country Status (1)
Country | Link |
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KR (1) | KR900009087Y1 (en) |
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1987
- 1987-03-05 KR KR2019870002843U patent/KR900009087Y1/en active IP Right Grant
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Publication number | Publication date |
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KR880018534U (en) | 1988-10-29 |
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