KR200445247Y1 - Photosensitive drum drive force transfer unit of process cartridge - Google Patents

Photosensitive drum drive force transfer unit of process cartridge Download PDF

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Publication number
KR200445247Y1
KR200445247Y1 KR20090003196U KR20090003196U KR200445247Y1 KR 200445247 Y1 KR200445247 Y1 KR 200445247Y1 KR 20090003196 U KR20090003196 U KR 20090003196U KR 20090003196 U KR20090003196 U KR 20090003196U KR 200445247 Y1 KR200445247 Y1 KR 200445247Y1
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South Korea
Prior art keywords
ball
photosensitive drum
gear body
process cartridge
fitting
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KR20090003196U
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Korean (ko)
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박장순
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박장순
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/757—Drive mechanisms for photosensitive medium, e.g. gears
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1857—Means for handling the process cartridge in the apparatus body for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms
    • G03G21/186—Axial couplings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1657—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts transmitting mechanical drive power

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

본 고안은 전자사진방식 화상형성장치에 적용되는 프로세스 카트리지의 감광드럼 구동력 전달유니트에 관한 것으로서, 드럼몸체(10)에 결합되는 기어몸체(20)와, 기어몸체(20)에 상하좌우 방향으로 회동되게 결합되는 구동축부(30)를 포함한다. 이때, 구동축부(30)는, 동력을 전달하거나 전달받는 카트리지의 구동부(미도시)와 결합되는 결합단(31)과, 기어몸체(20) 내부로 몰입되는 볼부(32)와, 결합단(31)과 볼부(32)를 연결하는 축부(33)와, 볼부(32)의 표면으로 돌출되는 돌기(35)를 포함한다. 또, 기어몸체(20)는, 드럼몸체(10)에 끼어지는 통형상의 끼움부(21)와, 외주면에 형성된 기어(22)와, 끼움부(21)의 단부를 폐쇄하는 폐쇄단(23)과, 끼움부(21)의 전방측 내주면에 형성된 것으로서 볼부(32)가 강제 끼움된 후 이탈되지 않도록 하는 다수의 강제끼움부(24)(24')와, 강제끼움부(24)와 다른 강제끼움부(24') 사이에 형성되어 돌기(35)가 끼어지는 돌기홈(25)을 포함하며, 강제끼움부(24)(24')의 내측에는 그 강제끼움부(24)(24')에 강제 끼어진 볼부(32)가 상하좌우 방향으로 움직임이 가능하도록 끼움공간부(20a)가 형성된다. The present invention relates to a photosensitive drum driving force transmission unit of a process cartridge applied to an electrophotographic image forming apparatus, and rotates in a vertical direction in a gear body 20 and a gear body 20 coupled to a drum body 10. Drive shaft portion 30 is coupled to be so. At this time, the drive shaft portion 30, the coupling end 31 is coupled to the driving portion (not shown) of the cartridge that transmits or receives power, the ball portion 32 immersed into the gear body 20, and the coupling end ( 31 and the shaft portion 33 connecting the ball portion 32, and the projection 35 protruding to the surface of the ball portion (32). In addition, the gear body 20 includes a cylindrical fitting portion 21 fitted to the drum body 10, a gear 22 formed on an outer circumferential surface thereof, and a closing end 23 for closing an end portion of the fitting portion 21. And a plurality of forced fitting portions 24 and 24 'formed on the inner circumferential surface of the fitting portion 21 to prevent the ball portion 32 from being separated after being forcedly fitted, and different from the forced fitting portion 24. And a projection groove 25 formed between the forced fitting portions 24 'and into which the protrusions 35 are fitted, and the forced fitting portions 24 and 24' inside the forced fitting portions 24 and 24 '. The fitting space portion 20a is formed to allow the ball portion 32 forcedly inserted into the vertical movement of the ball 32 in the up, down, left, and right directions.

Description

프로세스 카트리지의 감광드럼 구동력 전달유니트{Photosensitive drum power delivery unit for process cartridge} Photosensitive drum power delivery unit for process cartridge

본 고안은 전자사진방식 화상형성장치는, 프로세스 카트리지의 감광드럼 구동력 전달유니트에 관한 것이다.The present invention relates to an electrophotographic image forming apparatus and a photosensitive drum driving force transfer unit of a process cartridge.

전자사진방식 화상형성장치란 전자사진 프로세스(Electro-photographic Image Formation Type Process)에 의하여 기록매체 상에 화상을 형성하는 장치로서, 프린터, 복사기, 팩시밀리기 등에 적용되고 있다. 이때 화상형정장치에서 핵심적인 부분으로 프로세스 카트리지가 있다. 프로세스 카트리지란, 감광드럼, 대전롤러, 현상롤러, 토너저장부 등으로 구성되며, 정전잠상이 형성된 감광드럼상에 현상롤러에 의하여 토너화상이 현상된 후, 그 토너화상이 종이 등과 같은 기록매체에 전사됨으로써 화상이 인쇄되는 것이다. 여기서, 감광드럼은 프로세스 카트리지의 주요 구성부품으로서 동력을 전달하는 프로세스 카트리지의 구동부와 구동력 전달유니트에 의하여 유기적으로 결합되어 회전되도록 되어 있다. An electrophotographic image forming apparatus is an apparatus for forming an image on a recording medium by an electro-photographic image formation type process, and is applied to a printer, a copier, a facsimile machine, and the like. At this time, a process cartridge is an essential part of the image forming apparatus. The process cartridge is composed of a photosensitive drum, a charging roller, a developing roller, a toner storage unit, and the like. The toner image is developed by a developing roller on a photosensitive drum on which an electrostatic latent image is formed, and then the toner image is recorded on a recording medium such as paper. The image is printed by being transferred. Here, the photosensitive drum is organically coupled and rotated by the driving unit and the driving force transmission unit of the process cartridge which transmits power as a main component of the process cartridge.

한편, 프로세스 카트리지는, 그 내부에 충전된 토너를 다 사용하고 나면 새 카트리지로 교체하여야 한다. 그러나, 최근에는 비용절약, 자원 재활용 및 환경 보 호 차원에서, 사용하고 난 프로세스 카트리지를 수거한 후 토너를 충전하고, 사용수명이 종료된 감광드럼을 교체하여 재활용하는 경향이 생겨나고 있다.On the other hand, the process cartridge should be replaced with a new cartridge after the toner filled therein is used up. However, in recent years, in order to reduce costs, recycle resources, and protect the environment, there has been a tendency to recycle used toner cartridges after collecting used process cartridges, and to replace photosensitive drums that have reached end of life.

그런데 감광드럼을 프로세스 카트리지로부터 분리하기 위하여, 감광드럼과 카트리지의 구동부와 유기적으로 연결된 구동력 전달유니트를 분해한 후, 새로운 감광드럼으로 교체한 후 감광드럼과 카트리지의 구동부를 구동력 전달유니트로 연결하여야 하였다. However, in order to separate the photosensitive drum from the process cartridge, it was necessary to disassemble the driving force transmission unit organically connected to the photosensitive drum and the driving part of the cartridge, replace it with a new photosensitive drum, and then connect the photosensitive drum and the driving part of the cartridge to the driving force transmission unit. .

도 1은 종래의 프로세서 카트리지의 감광드럼 구동력 전달유니트의 분해사시도이다. 1 is an exploded perspective view of a photosensitive drum driving force transmission unit of a conventional processor cartridge.

도시된 바와 같이, 종래의 구동력 전달유니트는, 드럼몸체(1)에 끼어지는 끼움부(2a)가 형성되고 외주에 헬리컬기어(2b)가 형성된 기어몸체(2)와, 끼움부(2a)의 반대측으로부터 기어몸체(2)를 관통하며 단부에 제1핀공(3b)이 형성된 축부(3a)를 가지는 구동축부(3)와, 끼움부(2a) 측으로 관통되는 축부(3a)에 끼어지는 것으로서 제1핀공(3b)에 대응되는 제2핀공(4b)이 형성된 이탈방지볼(4)과, 제1,2핀공(3b)(4b)을 관통하여 이탈방지볼(4)을 축부(3a)에 결합시키는 핀(5)과, 이탈방지볼(4)이 기어몸체(2)로부터 빠져나가지 않도록 그 기어몸체(2)에 끼우는 커버부(6)를 포함한다. As shown in the drawing, a conventional driving force transmission unit includes a gear body 2 having a fitting portion 2a fitted to the drum body 1 and a helical gear 2b formed on an outer circumference thereof, and a fitting portion 2a. It is inserted into the drive shaft portion 3 having the shaft portion 3a, which penetrates the gear body 2 from the opposite side, and has a first pin hole 3b formed at its end, and the shaft portion 3a penetrated toward the fitting portion 2a. The separation prevention ball 4 is formed in the shaft portion 3a by passing through the separation prevention ball 4 having the second pin hole 4b corresponding to the one pin hole 3b, and the first and second pin holes 3b and 4b. And a cover portion 6 fitted to the gear body 2 so that the pin 5 to be engaged and the release preventing ball 4 do not escape from the gear body 2.

그런데 상기한 구동력 전달유니트는, 드럼몸체(1)에 조립하기 위하여 기어몸체(2)를 관통하는 축부(3)의 단부에 이탈방지볼(4)을 끼우고, 이후 핀(5)을 제1,2핀공(3b)(4b)에 끼운 후, 커버부(6)를 끼우는 조립공정이 요구되었다. 이러한 여러 공정으로 구성된 조립공정을 수행하기 위하여 많은 시간 및 노력이 소요되었으며, 이는 카트리지를 재활용하는데 장애요소가 되었다라는 문제점이 있었다.By the way, the driving force transmission unit, the separation prevention ball (4) is fitted to the end of the shaft portion (3) through the gear body (2) in order to assemble to the drum body (1), and then the pin (5) first After assembling into the 2-pin holes 3b and 4b, an assembly process of fitting the cover part 6 was required. It took a lot of time and effort to carry out the assembly process consisting of these various processes, which has been a problem that became an obstacle to recycling the cartridge.

본 고안은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 카트리지에 감광드럼을 용이하게 조립 또는 분해할 수 있도록 구조가 개선된 프로세스 카트리지의 감광드럼 구동력 전달유니트을 제공하는 것을 목적으로 한다. The present invention was created to solve the above problems, and an object of the present invention is to provide a photosensitive drum drive force transmission unit of a process cartridge having an improved structure to easily assemble or disassemble a photosensitive drum on the cartridge.

상기와 같은 목적을 달성하기 위하여, 본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트는, 전자사진방식 화상형성장치에 적용되는 프로세스 카트리지의 감광드럼 구동력 전달유니트에 있어서, 드럼몸체(10)에 결합되는 기어몸체(20)와, 상기 기어몸체(20)에 상하좌우 방향으로 회동되게 결합되는 구동축부(30)를 포함하고; 상기 구동축부(30)는, 동력을 전달하거나 전달받는 카트리지의 구동부(미도시)와 결합되는 결합단(31)과, 상기 기어몸체(20) 내부로 몰입되는 볼부(32)와, 상기 결합단(31)과 볼부(32)를 연결하는 축부(33)와, 상기 볼부(32)의 표면으로 돌출되는 돌기(35)를 포함하며; 상기 기어몸체(20)는, 상기 드럼몸체(10)에 끼어지는 통형상의 끼움부(21)와, 외주면에 형성된 기어(22)와, 상기 끼움부(21)의 단부를 폐쇄하는 폐쇄단(23)과, 상기 끼움부(21)의 전방측 내주면에 형성된 것으로서 상기 볼부(32)가 강제 끼움된 후 이탈되지 않도록 하는 다수의 강제끼움부(24)(24')와, 강제끼움부(24)와 다른 강제끼움부(24') 사이에 형성되어 상기 돌기(35)가 끼어지는 돌기홈(25)을 포함하며, 상기 강제끼움부(24)(24')의 내측에는 그 강제끼움부(24)(24')에 강제 끼어진 볼부(32)가 상하좌우 방향으로 움직임이 가능하도록 끼움공간부(20a)가 형성된 것;을 특징으로 한다.In order to achieve the above object, the photosensitive drum drive force transfer unit of the process cartridge according to the present invention, in the photosensitive drum drive force transfer unit of the process cartridge applied to the electrophotographic image forming apparatus, coupled to the drum body (10) And a drive shaft portion 30 coupled to the gear body 20 to be rotated in the up, down, left and right directions; The drive shaft portion 30, the coupling end 31 is coupled to the driving portion (not shown) of the cartridge that transmits or receives power, the ball portion 32 immersed into the gear body 20, and the coupling end A shaft portion 33 connecting the 31 and the ball portion 32, and a projection 35 protruding from the surface of the ball portion 32; The gear body 20 has a tubular fitting portion 21 fitted to the drum body 10, a gear 22 formed on an outer circumferential surface thereof, and a closed end for closing an end of the fitting portion 21 ( 23 and a plurality of forced fitting portions 24 and 24 'formed on the inner circumferential surface of the fitting portion 21 to prevent the ball portion 32 from being separated after being forcedly fitted, and the forced fitting portion 24 ) And a protrusion groove 25 formed between the other forced fitting portion 24 'and the protrusion 35 is fitted, and the forced fitting portion 24 is formed inside the forced fitting portions 24 and 24'. 24) The fitting portion 20a is formed so that the ball portion 32 forcedly fitted to the 24 'can move in the vertical, left, and right directions.

본 고안에 있어서, 상기 결합단(31), 볼부(32), 축부(33) 및 돌기(35)는 한몸체로 성형되어 구현된다. In the present invention, the coupling end 31, the ball portion 32, the shaft portion 33 and the projection 35 is implemented by molding in one body.

본 고안에 있어서, 상기 강제끼움부(24)(24')의 입구에 원주를 이루며 형성된 것으로서, 상기 볼부(32)의 직경의 내측으로 돌출되는 단턱(24a)(24a')을 더 포함한다. In the present invention, it is formed circumferentially at the inlet of the forced fitting portion 24, 24 ', and further comprises stepped (24a) (24a') protruding inward of the diameter of the ball portion (32).

본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트는, 드럼몸체에 결합되는 기어몸체에 강제 압입하여 결합되는 구동축부로 구성됨으로써, 구동축부를 기어몸체에 용이하게 조립 및 분리할 수 있으며, 이에 따라 카트리지에 감광드럼을 용이하게 조립 또는 분해할 수 있어 프로세스 카트리지의 재활용율을 높일 수 있다. 이에 따라 자원의 재활용, 환경보호 및 비용절약을 기대할 수 있다라는 작용, 효과가 있다. The photosensitive drum drive force transmission unit of the process cartridge according to the present invention is composed of a drive shaft portion which is coupled by forcibly pressing the gear body coupled to the drum body, so that the drive shaft portion can be easily assembled and detached from the gear body. The photosensitive drum can be easily assembled or disassembled to increase the recycling rate of the process cartridge. Accordingly, there is an action and effect that resources can be recycled, environmental protection and cost reduction can be expected.

이하, 본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, a photosensitive drum driving force transmission unit of a process cartridge according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트의 분해사시도이고, 도 3은 도 2의 구동축부가 기어몸체에 조립된 상태를 도시한 단면도이며, 도 4는 도 3의 기어몸체를 발췌하여 도시한 정면도이다.Figure 2 is an exploded perspective view of the photosensitive drum drive force transmission unit of the process cartridge according to the present invention, Figure 3 is a cross-sectional view showing a state in which the drive shaft of Figure 2 assembled to the gear body, Figure 4 is an excerpt of the gear body of Figure 3 It is a front view shown.

도시된 바와 같이, 본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트는 전자사진방식 화상형성장치에 적용되는 것으로서, 드럼몸체(10)에 결합되는 기어몸체(20)와, 기어몸체(20)에 상하좌우 방향으로 회동되게 결합되는 구동축부(30)를 포함한다.As shown, the photosensitive drum driving force transfer unit of the process cartridge according to the present invention is applied to the electrophotographic image forming apparatus, the gear body 20 and the gear body 20 coupled to the drum body 10; It includes a drive shaft portion 30 coupled to rotate in the vertical, vertical, left and right directions.

구동축부(30)는, 동력을 전달하거나 전달받는 카트리지의 구동부(미도시)와 결합되는 결합단(31)과, 기어몸체(20) 내부로 몰입되는 볼부(32)와, 결합단(31)과 볼부(32)를 연결하는 축부(33)와, 볼부(32)의 표면으로 돌출되는 돌기(35)를 포함한다.The drive shaft portion 30 is coupled to the drive end (not shown) of the cartridge that transmits or receives power, the ball portion 32 immersed into the gear body 20, and the coupling end 31 And a shaft portion 33 connecting the ball portion 32 and a protrusion 35 protruding to the surface of the ball portion 32.

볼부(32)는 축부(33)의 단부에 형성되며, 전체적으로 볼 형상을 가진다. The ball portion 32 is formed at the end of the shaft portion 33 and has a ball shape as a whole.

돌기(35)는 구동축부(30)가 기어몸체(20)에 결합된 후 축방향으로 회전되지 않도록 하기 위한 것이다. 이러한 돌기(35)는 볼부(32)의 표면으로부터 양방향으로 돌출된 구조를 가진다.The projection 35 is for preventing the drive shaft portion 30 from being rotated in the axial direction after being coupled to the gear body 20. This protrusion 35 has a structure protruding in both directions from the surface of the ball portion (32).

상기한 결합단(31), 볼부(32), 축부(33) 및 돌기(35)는 한몸체로 성형되어 구현되며, 금속제를 성형하여 구현된다. The coupling end 31, the ball portion 32, the shaft portion 33 and the protrusion 35 is formed by forming a single body, is formed by molding a metal.

기어몸체(20)는, 드럼몸체(10)에 끼어지는 통형상의 끼움부(21)와, 외주면에 형성된 기어(22)와, 끼움부(21)의 단부를 폐쇄하는 폐쇄단(23)과, 끼움부(21)의 전방측 내주면에 형성된 것으로서 볼부(32)가 강제 끼움된 후 이탈되지 않도록 하는 다수의 강제끼움부(24)(24')와, 강제끼움부(24)와 다른 강제끼움부(24') 사이에 형성되어 상기한 볼부(32)의 돌기(35)가 끼어지는 돌기홈(25)을 포함한다. 이때 강제끼움부(24)(24')의 내측, 즉 기어몸체(20)의 내부에는 그 강제끼움부(24)(24')에 강제 끼어진 볼부(32)가 상하좌우 방향으로 움직임 또는 회동이 가능하도록 끼움공간부(20a)가 형성되어 있다. The gear body 20 includes a cylindrical fitting portion 21 fitted to the drum body 10, a gear 22 formed on an outer circumferential surface thereof, and a closing end 23 for closing an end portion of the fitting portion 21; And a plurality of forced fitting portions 24 and 24 'formed on the front inner circumferential surface of the fitting portion 21 to prevent the ball portion 32 from being separated after being forcedly fitted, and other forced fitting portions 24 and other forced fitting portions. It is formed between the portion (24 ') includes a projection groove 25, the projection 35 of the ball portion 32 is sandwiched. At this time, the inside of the forced fitting portion 24, 24 ', that is, the inside of the gear body 20, the ball portion 32 forcibly fitted to the forced fitting portion 24, 24' is moved or rotated in the up, down, left and right directions The fitting space portion 20a is formed to enable this.

기어(22)는 카트리지의 구동부를 구성하는 기어와 연결되는 것으로서 헬리컬기어나 평기어등으로 구성된다. The gear 22 is connected to the gear constituting the drive unit of the cartridge and is composed of a helical gear, a spur gear, and the like.

폐쇄단(23)은 구동축부(30)가 기어몸체(20)에 결합된 후, 구동축부(30)의 볼부(32)가 기어몸체(20)를 관통하지 않도록 하는 것이다. 이때 폐쇄단(23)의 중앙에는 전방측으로 돌출된 돌출단(23a)이 형성되어 볼부(32)의 이동 위치를 제한한다. The closed end 23 is to prevent the ball portion 32 of the drive shaft portion 30 from penetrating the gear body 20 after the drive shaft portion 30 is coupled to the gear body 20. At this time, the protruding end 23a protruding toward the front side is formed in the center of the closed end 23 to limit the moving position of the ball part 32.

강제끼움부(24)(24')는 구동축부(30)의 볼부(32)를 기어몸체(20) 내부의 끼움공간부(20a)로 강제 끼움하기 위한 것으로서, 기어몸체(20) 내주면에서 원형을 이루며 다수개가 돌출된 형태로 되고, 본 실시예에서는 4개가 형성된다. 이러한 강제끼움부(24)(24')의 입구에는 볼부(32)의 직경의 내측으로 돌출되는 단턱(24a)(24a')이 원주를 이루며 형성되어 있다. 이러한 구조에 의하여, 일반적인 힘으로 볼부(32)를 강제끼움부(24)의 입구측으로 끼우게 되면 그 입구의 단턱(24a)(24a')에 걸려 끼어지지 않으나, 강한 힘으로 볼부(32)를 압입하게 되면 단턱(24a)(24a')들 사이가 약간 벌어지면서 볼부(32)가 단턱(24a)(24a')을 통과하여 끼움공간부(20a)로 진입되고, 이후 볼부(32)는 단턱(24a)(24a')에 걸려 구동축부(30)는 기어몸체(20)로부터 분리되지 않게 된다. The force fitting parts 24 and 24 ′ are for forcibly fitting the ball part 32 of the drive shaft part 30 to the fitting space part 20a inside the gear body 20, and are circular in the inner circumferential surface of the gear body 20. To form a plurality of protrusions, in the present embodiment four are formed. At the inlet of the forced fitting portions 24 and 24 ', stepped portions 24a and 24a' protruding inwardly of the diameter of the ball portion 32 are formed in a circumferential manner. By this structure, if the ball portion 32 is inserted into the inlet side of the forced fitting portion 24 by a general force, the ball portion 32 is not caught by the stepped portions 24a and 24a 'of the inlet. When press-fitted, the ball portion 32 enters the fitting space portion 20a through the stepped portions 24a and 24a 'while slightly opening between the stepped portions 24a and 24a', and then the ball portion 32 is stepped. The drive shaft portion 30 is caught by the 24a and 24a 'so as not to be separated from the gear body 20.

돌기홈(25)은, 강제끼움부(24)와 다른 강제끼움무(24') 사이에 종방향으로 형성되며 볼부(32)의 돌기(35)가 끼어진다. 구동축부(30)가 기어몸체(20)에 결합될 때 돌기(35)는 돌기홈(25)에 끼어지며, 이에 따라 구동축부(30)는 기어몸체(20)로 부터 축방향으로 회전되지 않게 된다. The projection groove 25 is formed in the longitudinal direction between the forced fitting portion 24 and the other forced fitting portion 24 ', and the projection 35 of the ball portion 32 is sandwiched. When the drive shaft part 30 is coupled to the gear body 20, the protrusion 35 is fitted into the protrusion groove 25, so that the drive shaft part 30 is not rotated axially from the gear body 20. do.

본 고안은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

도 1은 종래의 프로세서 카트리지의 감광드럼 구동력 전달유니트의 분해사시도,1 is an exploded perspective view of a photosensitive drum driving force transmission unit of a conventional processor cartridge;

도 2는 본 고안에 따른 프로세스 카트리지의 감광드럼 구동력 전달유니트의 분해사시도,Figure 2 is an exploded perspective view of the photosensitive drum drive force transmission unit of the process cartridge according to the present invention,

도 3은 도 2의 구동축부가 기어몸체에 조립된 상태를 도시한 단면도,3 is a cross-sectional view showing a state in which the drive shaft of Figure 2 assembled to the gear body;

도 4는 도 3의 기어몸체를 발췌하여 도시한 정면도.4 is a front view showing an extract of the gear body of FIG.

<도면 중 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 ... 드럼몸체 20 ... 기어몸체10 ... drum body 20 ... gear body

20a ... 끼움공간부 21 ... 끼움부20a ... fitting space 21 ... fitting

22 ... 기어 23 ... 폐쇄단22 ... gear 23 ... closed end

23a ... 돌출단 24,24' ... 강제끼움부23a ... protrusion 24,24 '... forced fitting

24a, 24a' ... 단턱 25 ... 돌기홈24a, 24a '... step 25 ... protruding groove

30 ... 구동축부 31 ... 결합단30 ... drive shaft 31 ... coupling end

32 ... 볼부 33 ... 축부32 ... ball 33 ... shaft

35 ... 돌기35 ... turning

Claims (3)

전자사진방식 화상형성장치에 적용되는 프로세스 카트리지의 감광드럼 구동력 전달유니트에 있어서, In the photosensitive drum driving force transfer unit of a process cartridge applied to an electrophotographic image forming apparatus, 드럼몸체(10)에 결합되는 기어몸체(20)와, 상기 기어몸체(20)에 상하좌우 방향으로 회동되게 결합되는 구동축부(30)를 포함하고;A gear body (20) coupled to the drum body (10) and a drive shaft portion (30) rotatably coupled to the gear body (20) in up, down, left and right directions; 상기 구동축부(30)는, 동력을 전달하거나 전달받는 카트리지의 구동부(미도시)와 결합되는 결합단(31)과, 상기 기어몸체(20) 내부로 몰입되는 볼부(32)와, 상기 결합단(31)과 볼부(32)를 연결하는 축부(33)와, 상기 볼부(32)의 표면으로 돌출되는 돌기(35)를 포함하며;The drive shaft portion 30, the coupling end 31 is coupled to the driving portion (not shown) of the cartridge that transmits or receives power, the ball portion 32 immersed into the gear body 20, and the coupling end A shaft portion 33 connecting the 31 and the ball portion 32, and a projection 35 protruding from the surface of the ball portion 32; 상기 기어몸체(20)는, 상기 드럼몸체(10)에 끼어지는 통형상의 끼움부(21)와, 외주면에 형성된 기어(22)와, 상기 끼움부(21)의 단부를 폐쇄하는 폐쇄단(23)과, 상기 끼움부(21)의 전방측 내주면에 형성된 것으로서 상기 볼부(32)가 강제 끼움된 후 이탈되지 않도록 하는 다수의 강제끼움부(24)(24')와, 강제끼움부(24)와 다른 강제끼움부(24') 사이에 형성되어 상기 돌기(35)가 끼어지는 돌기홈(25)을 포함하며, 상기 강제끼움부(24)(24')의 내측에는 그 강제끼움부(24)(24')에 강제 끼어진 상기 볼부(32)가 상하좌우 방향으로 움직임이 가능하도록 끼움공간부(20a)가 형성된 것;을 특징으로 하는 프로세스 카트리지의 감광드럼 구동력 전달유니트. The gear body 20 has a tubular fitting portion 21 fitted to the drum body 10, a gear 22 formed on an outer circumferential surface thereof, and a closed end for closing an end of the fitting portion 21 ( 23 and a plurality of forced fitting portions 24 and 24 'formed on the inner circumferential surface of the fitting portion 21 to prevent the ball portion 32 from being separated after being forcedly fitted, and the forced fitting portion 24 ) And a protrusion groove 25 formed between the other forced fitting portion 24 'and the protrusion 35 is fitted, and the forced fitting portion 24 is formed inside the forced fitting portions 24 and 24'. 24) The fitting portion (20a) is formed so that the ball portion (32), which is forcibly sandwiched by the 24 (24 ') to move in the vertical, left, and right directions; a photosensitive drum drive force transmission unit of the process cartridge. 제1항에 있어서, The method of claim 1, 상기 결합단(31), 볼부(32), 축부(33) 및 돌기(35)는 한몸체로 성형되어 구현된 것을 특징으로 하는 프로세스 카트리지의 감광드럼 구동력 전달유니트.The coupling end 31, the ball portion 32, the shaft portion 33 and the projection 35 is a photosensitive drum drive force transmission unit of the process cartridge, characterized in that formed by one body. 제1항에 있어서, The method of claim 1, 상기 강제끼움부(24)(24')의 입구에 원주를 이루며 형성된 것으로서, 상기 볼부(32)의 직경의 내측으로 돌출되는 단턱(24a)(24a')을 더 포함하는 것을 특징으로 하는 프로세스 카트리지의 감광드럼 구동력 전달유니트.The process cartridge is formed circumferentially formed at the inlet of the forced fitting portion 24, 24 ', and further comprises a step (24a) (24a') protruding inwardly of the diameter of the ball portion (32) Photosensitive drum drive force transmission unit.
KR20090003196U 2009-03-19 2009-03-19 Photosensitive drum drive force transfer unit of process cartridge KR200445247Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105242511A (en) * 2015-11-17 2016-01-13 珠海天威飞马打印耗材有限公司 Gear seat, driving assembly and treatment box

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JPH086459A (en) * 1994-06-24 1996-01-12 Canon Inc Image carrying member and process cartridge and image forming device
JP2001209272A (en) 2000-01-24 2001-08-03 Murata Mach Ltd Supporting mechanism for photoreceptor drum
KR20070053023A (en) * 2005-11-18 2007-05-23 삼성전자주식회사 Opc drum assembly for image forming apparatus
KR20080022746A (en) * 2006-09-07 2008-03-12 삼성전자주식회사 Organic photo conductor of image forming apparatus

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Publication number Priority date Publication date Assignee Title
JPH086459A (en) * 1994-06-24 1996-01-12 Canon Inc Image carrying member and process cartridge and image forming device
JP2001209272A (en) 2000-01-24 2001-08-03 Murata Mach Ltd Supporting mechanism for photoreceptor drum
KR20070053023A (en) * 2005-11-18 2007-05-23 삼성전자주식회사 Opc drum assembly for image forming apparatus
KR20080022746A (en) * 2006-09-07 2008-03-12 삼성전자주식회사 Organic photo conductor of image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105242511A (en) * 2015-11-17 2016-01-13 珠海天威飞马打印耗材有限公司 Gear seat, driving assembly and treatment box
CN105242511B (en) * 2015-11-17 2022-04-19 珠海天威飞马打印耗材有限公司 Gear seat, drive assembly and processing box

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