KR100598484B1 - Pivot for Gear - Google Patents

Pivot for Gear Download PDF

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Publication number
KR100598484B1
KR100598484B1 KR1020040070176A KR20040070176A KR100598484B1 KR 100598484 B1 KR100598484 B1 KR 100598484B1 KR 1020040070176 A KR1020040070176 A KR 1020040070176A KR 20040070176 A KR20040070176 A KR 20040070176A KR 100598484 B1 KR100598484 B1 KR 100598484B1
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South Korea
Prior art keywords
gear
support shaft
fat
assembled
weight
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KR1020040070176A
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Korean (ko)
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KR20060021437A (en
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박기용
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(주)애드테크
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Priority to KR1020040070176A priority Critical patent/KR100598484B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/7207—Heating or cooling of the moulded articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

본 발명은, 종래 금형의 살빼기용 핀을 이용한 살빼기의 한계를 개선하고 충분한 살빼기가 이루어짐으로써 사출시 부품의 냉각 밸런스 차이로 인한 변형이 방지되는 기어용 회전지지축을 개시한다.The present invention discloses a rotational support shaft for a gear which prevents deformation due to a difference in cooling balance of parts during injection by improving a limit of fat loss using a fat pin for weight loss of a conventional mold and making a sufficient weight.

본 발명의 주요 구성은, 기어가 회전 가능하게 지지되도록 조립되는 기어용 회전지지축에 있어서, 축 중심방향의 내부에 살두께를 감소시킨 살빼기부가 형성됨과 아울러, 상기 기어가 조립되는 부위의 외주면에도 살두께를 감소시킨 살빼기부가 형성되되, 상기 외주면의 살빼기부는 기어의 치 형상으로 이루어진 것을 특징으로 한다.The main configuration of the present invention, in the rotary support shaft for the gear is assembled so that the gear is rotatably supported, the fat part is reduced in the inside of the axis center direction is formed, and also on the outer peripheral surface of the site where the gear is assembled The fat loss portion is formed to reduce the thickness of the fat, the fat portion of the outer peripheral surface is characterized in that the tooth shape of the gear.

기어, 축, 살빼기, 사출, 변형방지Gear, shaft, weight loss, injection, deformation prevention

Description

기어용 회전지지축 {Pivot for Gear} Rotating Support Shaft for Gears {Pivot for Gear}             

도 1 : 종래의 기어용 회전지지축을 나타낸 부분 단면의 측면도1: Side view of the partial cross section which shows the conventional rotation support shaft for gears

도 2 : 종래의 기어용 회전지지축에 대한 내부 살빼기를 설명하기 위해 도시한 금형의 단면도2 is a cross-sectional view of a mold for explaining the internal weight of the conventional rotary support shaft for gears.

도 3 : 본 발명에 따른 기어용 회전지지축을 나타낸 부분 단면의 측면도Figure 3 is a side view of a partial cross section showing a rotation support shaft for a gear according to the invention

도 4 : 본 발명에 따른 기어용 회전지지축의 적용예를 나타낸 평면도4 is a plan view showing an application example of the rotary support shaft for gears according to the present invention

도 5 : 도 4의 A-A선 단면도5: A sectional view along the line A-A of FIG.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 회전지지축 10a,10b : 살빼기부10: rotation support shaft 10a, 10b: weight loss

20 : 기어 30 : 베이스20: gear 30: base

본 발명은 각종 기계장치 등에 사용되는 기어의 회전지지축에 관한 것으로서, 보다 상세하게는, 사출제작시 냉각 밸런스의 차이로 인한 변형을 일으키 지 않도록 축의 내부는 물론 외부에 대해서도 살빼기가 이루어진 구조를 갖는 회전지지축에 관한 것이다.The present invention relates to a rotational support shaft of a gear used in various machinery and the like, and more particularly, to have a structure in which the weight of the shaft as well as the inside of the shaft so as not to cause deformation due to the difference in cooling balance during the production of injection molding. It relates to a rotation support shaft.

각종 기계장치에는 부품의 구동이나 종동을 위해 플라스틱 또는 금속 재질의 크고 작은 기어들이 사용되고 있으며, 이러한 기어는 해당 장치의 베이스에 마련되는 회전지지축에 조립됨으로써 회전이 자유자재로 이루어지게 된다.In various mechanical devices, large and small gears of plastic or metal are used for driving or following parts, and the gears are freely rotated by being assembled to a rotating support shaft provided at the base of the device.

특히, 기어를 회전 가능하게 지지하는 상기 회전지지축은, 첨부도면 도 1에 나타난 바와 같이, 회전지지축(100) 내부의 살두께를 감소시킨 살빼기부(100a)를 갖고 있는데, 이는 도 2를 통해서 볼 수 있듯이 일반적으로 회전지지축(100)이 마련되는 베이스(200)의 살두께에 비하여 회전지지축(100)의 살두께가 크기 때문에 사출제작시 베이스(200)와 회전지지축(100)의 냉각 밸런스에 차이가 생김으로 인해 회전지지축(100)에 변형이 일어나는 것을 방지하기 위한 것이다.In particular, the rotation support shaft for rotatably supporting the gear, as shown in the accompanying drawings, Figure 1, has a fattening portion (100a) to reduce the thickness of the inside of the rotary support shaft 100, which is through As can be seen, the thickness of the rotation support shaft 100 is larger than the thickness of the base 200 on which the rotation support shaft 100 is provided. Due to the difference in the cooling balance is to prevent the deformation occurs in the rotary support shaft (100).

한편, 회전지지축(100)의 내부에 살빼기부(100a)를 형성하기 위해서는, 도 2에 도시된 바와 같이, 금형(300)의 소정 부위 즉 회전지지축(100)이 형성되는 부위에 살빼기용 핀(400)을 설치하여, 사출시 살빼기용 핀(400)이 들어가 있는 부분만큼 회전지지축(100)의 하단 내부에 살빼기가 이루어지도록 하는 방법에 의거하고 있다. 그런데, 살빼기용 핀(400)의 외경이 작고 길이가 길면 강도면에서 약하기 때문에 쉽게 파손되는 문제가 있고, 반면에 살빼기용 핀(400)의 길이를 작게 하면 회전지지축(100)의 살빼기부(100a)가 불충분해지는 문제가 있다. 이에 따라, 회전지지축(100)에 원하는 만큼의 살빼기가 이루어지지 않음으로 인해, 베이 스(200)와 회전지지축(100)의 냉각 밸런스 차이가 유발되어 회전지지축(100)이 변형되는 결과를 낳게 된다. 이러한 회전지지축(100)의 변형은 결국, 회전지지축(100)에 조립된 기어가 구동될 때 부하를 발생시키고, 다른 회전지지축과의 간격 변화로 말미암아 소음을 유발시키는 문제를 일으킨다.On the other hand, in order to form a weight portion (100a) in the interior of the rotation support shaft 100, as shown in Figure 2, a predetermined portion of the mold 300, that is, for the weight portion is formed in the rotation support shaft 100 By installing the pin 400, it is based on the method to make the weight to the inside of the lower end of the rotary support shaft 100 as much as the portion entering the fat pin 400 for injection. By the way, if the outer diameter of the fat pin 400 is long and the length is weak in terms of strength, there is a problem that is easily broken, on the other hand, if the length of the fat pin 400 is small, the fat part of the rotary support shaft 100 ( There is a problem that 100a) is insufficient. Accordingly, as much weight as desired is not made on the rotation support shaft 100, a difference in cooling balance between the base 200 and the rotation support shaft 100 is induced, resulting in deformation of the rotation support shaft 100. Will give birth to. This deformation of the rotary support shaft 100, in turn, generates a load when the gear assembled to the rotary support shaft 100 is driven, causing a problem of causing noise due to a change in the distance from the other rotary support shaft.

본 발명은 전술한 바와 같은 종래의 문제점을 개선하기 위해 안출된 것으로서, 그 목적은, 종래 금형의 살빼기용 핀을 이용한 살빼기의 한계를 개선하고 충분한 살빼기가 이루어짐으로써 사출시 부품의 냉각 밸런스 차이로 인한 변형이 방지되는 기어용 회전지지축을 제공하는 데에 있다.
The present invention has been made in order to improve the conventional problems as described above, the object is to improve the limit of fat loss using the fat pin of the conventional mold and due to the difference in the cooling balance of the components during injection due to a sufficient weight loss is made An object of the present invention is to provide a rotation support shaft for a gear which is prevented from deformation.

위와 같은 목적을 달성하기 위한 본 발명에 따른 기어용 회전지지축은, 기어가 회전 가능하게 지지되도록 조립되는 기어용 회전지지축에 있어서, 내부에 살두께를 감소시킨 살빼기부가 형성됨과 아울러, 상기 기어가 조립되는 부위의 외주면에도 살두께를 감소시킨 살빼기부가 형성된 것을 특징으로 한다. 특히, 상기 외주면의 살빼기부는 기어의 치 형상으로 이루어질 수 있다.Rotational support shaft for a gear according to the present invention for achieving the above object, in the gear support shaft for assembly so that the gear is rotatably supported, there is a fattening portion to reduce the thickness of the inside, the gear is The outer peripheral surface of the assembled part is characterized in that the fat loss portion is formed to reduce the thickness of the flesh. In particular, the fat portion of the outer peripheral surface may be made of a tooth shape of the gear.

이하에서는 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 3은 본 발명에 따른 기어용 회전지지축을 나타낸 부분 단면의 측면도이고, 도 4는 본 발명에 따른 기어용 회전지지축의 적용예를 나타낸 평면도이며, 도 5는 도 4의 A-A선 단면도이다. 먼저, 도 4와 도 5를 통해 볼 수 있는 바와 같이, 기어(20)가 설치되는 기계장치의 베이스(30)에 회전지지축(10)이 형성되어 있다. 그리고, 회전지지축(10)의 형상은, 도 3에 나타나 있듯이, 하부측이 상부측보다 큰 외경으로 이루어져 있어서, 회전지지축(10)의 상부측에 기어(20)가 조립이 되는데, 하부측의 내부에는 종래와 마찬가지로 살두께를 감소시킨 살빼기부(10a)가 형성되어 있다. 여기서, 본 발명의 실시예는 회전지지축(10)의 하부측 내부 뿐만 아니라 기어(20)가 조립되는 상부측의 외주면에도 살두께를 감소시킨 살빼기부(10b)를 형성하고 있다. 특히, 상부측 외주면의 살빼기부(10b)는, 회전지지축(10)의 상부측 외주면을 상하 방향으로 기다랗게 파여짐으로써 기어의 치(齒) 형상으로 이루어진다.Figure 3 is a side view of a partial cross-sectional view showing a rotational support shaft for a gear according to the invention, Figure 4 is a plan view showing an application example of the rotational support shaft for a gear according to the invention, Figure 5 is a cross-sectional view taken along line A-A of FIG. First, as can be seen through Figures 4 and 5, the rotary support shaft 10 is formed on the base 30 of the machine in which the gear 20 is installed. And, as shown in Figure 3, the shape of the rotary support shaft 10, the lower side is made of an outer diameter larger than the upper side, the gear 20 is assembled to the upper side of the rotary support shaft 10, the lower The inside of the side is provided with a fat loss portion 10a having a reduced thickness as in the prior art. Here, the embodiment of the present invention forms a fattening portion 10b having a reduced thickness on the outer circumferential surface of the upper side where the gear 20 is assembled, as well as inside the lower side of the rotary support shaft 10. In particular, the fat part 10b of the upper outer peripheral surface is made into the tooth shape of a gear by dividing the upper outer peripheral surface of the rotation support shaft 10 in an up-down direction long.

이와 같이, 본 발명의 회전지지축(10)은 축내부 뿐만 아니라 축외부에도 살빼기가 이루어짐으로써, 사출 성형시 부품의 살두께로 인한 냉각 밸런스의 차이와 이에 따른 변형이 발생하지 않게 된다. 따라서, 회전지지축(10)과 이에 조립되는 기어(20)의 부하가 배제되므로 기어(20)의 작동시 소음의 방지와 구동성의 향상을 기대할 수가 있다.As described above, the rotational support shaft 10 of the present invention is made to lose weight not only inside the shaft but also outside the shaft, so that the difference in cooling balance due to the thickness of the parts during injection molding and the deformation thereof are not generated. Therefore, since the load of the rotation support shaft 10 and the gear 20 assembled thereto is excluded, it can be expected to prevent noise and improve driving performance when the gear 20 is operated.

이상에서 설명한 바와 같이, 본 발명에 따른 기어용 회전지지축은, 축의 내 ·외부에서 충분한 살빼기가 이루어진 구조를 가짐으로써 사출 성형시 부품의 냉각 밸런스 차이로 인한 변형이 방지되어, 회전지지축에 조립되는 기어의 구동성을 향상시키고, 기어의 작동시 소음의 발생을 미연에 방지하게 되는 효과가 있다.As described above, the rotational support shaft for the gear according to the present invention has a structure in which the inside and the outside of the shaft has a sufficient weight to prevent deformation due to the difference in cooling balance of the components during injection molding, it is assembled to the rotation support shaft It improves the driveability of the gear, there is an effect that prevents the generation of noise during operation of the gear.

Claims (2)

삭제delete 기어가 회전 가능하게 지지되도록 조립되는 기어용 회전지지축에 있어서,In the rotation support shaft for the gear is assembled so that the gear is rotatably supported, 축 중심방향의 내부에 살두께를 감소시킨 살빼기부가 형성됨과 아울러, 상기 기어가 조립되는 부위의 외주면에도 살두께를 감소시킨 살빼기부가 형성되되,In addition to the weight loss portion is formed in the inside of the axial center direction, the weight loss portion is formed on the outer circumferential surface of the site where the gear is assembled, 상기 외주면의 살빼기부는 기어의 치 형상으로 이루어진 것을 특징으로 하는 기어용 회전지지축.Rotating support shaft for a gear, characterized in that the weight portion of the outer peripheral surface made of a tooth shape of the gear.
KR1020040070176A 2004-09-03 2004-09-03 Pivot for Gear KR100598484B1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166048A (en) 1986-01-14 1987-07-22 Yamaha Motor Co Ltd Manufacture of gear shaft of speed change gear
JPH04322915A (en) * 1991-04-22 1992-11-12 Hino Motors Ltd Method of manufacturing gear shaft
JPH06133497A (en) * 1992-10-13 1994-05-13 Mitsubishi Electric Corp Manufacture of output rotating shaft of planetary gear type starter
JPH07308728A (en) * 1994-05-17 1995-11-28 Kawasaki Seikouki:Kk Manufacture of gear shaft
KR19980034461U (en) * 1996-12-10 1998-09-15 박병재 Gear structure
KR20000058458A (en) * 2000-05-29 2000-10-05 김민응 Steering yoke manufacturing process for automobile's steering system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166048A (en) 1986-01-14 1987-07-22 Yamaha Motor Co Ltd Manufacture of gear shaft of speed change gear
JPH04322915A (en) * 1991-04-22 1992-11-12 Hino Motors Ltd Method of manufacturing gear shaft
JPH06133497A (en) * 1992-10-13 1994-05-13 Mitsubishi Electric Corp Manufacture of output rotating shaft of planetary gear type starter
JPH07308728A (en) * 1994-05-17 1995-11-28 Kawasaki Seikouki:Kk Manufacture of gear shaft
KR19980034461U (en) * 1996-12-10 1998-09-15 박병재 Gear structure
KR20000058458A (en) * 2000-05-29 2000-10-05 김민응 Steering yoke manufacturing process for automobile's steering system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
2019940003742

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