WO2012075762A1 - 图像形成装置的驱动力传递机构及处理盒 - Google Patents

图像形成装置的驱动力传递机构及处理盒 Download PDF

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Publication number
WO2012075762A1
WO2012075762A1 PCT/CN2011/072841 CN2011072841W WO2012075762A1 WO 2012075762 A1 WO2012075762 A1 WO 2012075762A1 CN 2011072841 W CN2011072841 W CN 2011072841W WO 2012075762 A1 WO2012075762 A1 WO 2012075762A1
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WO
WIPO (PCT)
Prior art keywords
boss
image forming
forming apparatus
photosensitive drum
driving force
Prior art date
Application number
PCT/CN2011/072841
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English (en)
French (fr)
Inventor
梁军
Original Assignee
珠海赛纳打印科技股份有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 珠海赛纳打印科技股份有限公司 filed Critical 珠海赛纳打印科技股份有限公司
Publication of WO2012075762A1 publication Critical patent/WO2012075762A1/zh
Priority to US14/044,727 priority Critical patent/US9152126B2/en

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Classifications

    • 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
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/112—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts comprising torque-transmitting surfaces, e.g. bayonet joints
    • 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

Definitions

  • the present invention relates to a driving force transmission mechanism and a process cartridge in an image forming apparatus. Background technique
  • the toner cartridge is a cartridge that can be detachably loaded into the main body of the image forming apparatus, and the cartridge as an integral unit includes an electrophotographic photosensitive member and at least such as a charger, a developer, a cleaner, and the like.
  • One of the processors One of the processors. Since the toner cartridge is detachably mounted relative to the main unit of the apparatus, it is easy to maintain the equipment.
  • An electrophotographic image forming apparatus using an electrophotographic image forming apparatus operates by selectively exposing an electrophotographic photosensitive member uniformly charged by a light of an image forming apparatus to form an electrostatic latent image, which is used by a developing device The toner is developed into a toner image, and the formed toner image is transferred onto a recording medium by a transfer device to form an image on the recording material.
  • a power transmission mode between a photosensitive drum driving head 17 on a toner cartridge and an image forming apparatus driving head 18 is disclosed, and an end portion of the image forming apparatus driving head 18 is disposed.
  • the present invention provides a driving force transmission mechanism of an image forming apparatus, which solves the technical problem that the manufacturing process of the photosensitive drum driving head of the driving force transmitting mechanism of the conventional image forming apparatus is complicated and the deformation precision and the damage are affected by the long-term use. .
  • the technical solution adopted by the present invention is:
  • a driving force transmitting mechanism of an image forming apparatus including a photosensitive drum driving assembly and an image forming apparatus a driving head
  • the drum driving assembly comprising: a drum shaft extending axially from the end of the photosensitive drum and rotatably supporting the photosensitive drum during operation and a boss extending axially from the end surface of the drum shaft, the image forming
  • the device driving head is provided with a groove with a twisted surface matching the boss, the groove cross section being a polygon with a corner, wherein the side wall of the boss is provided with a convex A radially extending convex tooth, the convex tooth being disposed obliquely on the side wall of the boss.
  • the upper side wall of the boss is tangent to the inner wall of the groove.
  • a recessed hole is disposed on the boss, and a positioning post tangential to the inner diameter of the recessed hole is disposed in the recess.
  • the corners of the grooves are inclined or twisted.
  • the boss has a circular cross section.
  • the boss has a polygonal cross section.
  • the male tooth includes a first convex tooth that engages a twisted surface of the twisted groove, and a second convex tooth that abuts an edge of the end surface of the twisted groove.
  • a position perpendicular to a radial cross section of the boss is disposed at a position where the convex teeth are disposed on the boss, and the inclined direction of the convex teeth is parallel to the convex cut surface.
  • the cylindrical boss, the convex tooth and the drum shaft are integrally formed of the same material.
  • the material is one of P0M, ABS, PC, and copper.
  • the invention also provides a corresponding process cartridge, comprising a photosensitive drum and a photosensitive drum driving assembly disposed at an end of the photosensitive drum, the photosensitive drum driving assembly comprising: extending axially from the end of the photosensitive drum and rotatably supporting the photosensitive during operation a drum shaft of the drum and a boss extending axially from the end surface of the drum shaft for mating with a groove having a twisted surface in the driving head of the image forming apparatus, the groove cross section being a polygon having a corner, characterized in that The side wall of the boss is provided with convex teeth extending in a radial direction of the boss, and the protruding teeth are obliquely disposed on the side wall of the boss.
  • the upper side wall of the boss is tangent to the inner wall of the groove.
  • a recessed hole is disposed on the boss, and a positioning post tangential to the inner diameter of the recessed hole is disposed in the recess.
  • the boss has a circular cross section.
  • the boss has a polygonal cross section.
  • the male tooth includes a first convex tooth that engages a twisted surface of the twisted groove, and a second convex tooth that abuts an edge of the end surface of the twisted groove.
  • a plane perpendicular to the radial cross section of the boss is further disposed at a position on the boss where the convex tooth is disposed.
  • the oblique direction of the convex teeth is parallel to the convex cut surface.
  • the cylindrical boss, the convex tooth and the drum shaft are integrally formed of the same material.
  • the material is one of P0M, ABS, PC, and copper.
  • the side wall of the drum of the photosensitive drum driving assembly is always tangential to the inner wall of the driving head of the image forming apparatus during the driving force transmission, the photosensitive drum driving assembly and the image forming apparatus can be effectively ensured.
  • the center of rotation of the driving head is coaxially aligned, so as to avoid unnecessary shaking between the two in the driving force transmission process, so that the convex teeth on the boss mesh with the twisted surface in the groove of the driving head, thereby driving the boss to rotate.
  • Synchronous coaxial rotation of the boss and the image forming device driving head can be realized, and the structure of the photosensitive drum driving head is simple in design, which greatly saves the design and manufacturing cost of the photosensitive drum driving assembly, even if the photosensitive drum driving head is used for a long time. It is not easy to be damaged, and solves the technical problem that the driving force transmitting mechanism of the conventional image forming apparatus has a complicated manufacturing process of the photosensitive drum driving head, high mold opening cost, and easy deformation and damage after long-term use, which affects the transmission precision and efficiency.
  • FIG. 1 is an exploded perspective view of a driving head of an image forming apparatus and a driving drum of a photosensitive drum in the prior art
  • FIG. 2 is a perspective view of a photosensitive drum driving assembly in a first embodiment of the present invention
  • Figure 3 is an exploded perspective view showing the photosensitive drum driving assembly and the image forming apparatus driving head in the first embodiment of the present invention
  • Figure 4 is an exploded perspective view showing the photosensitive drum driving assembly and the image forming apparatus driving head in the second embodiment of the present invention
  • Figure 5 is an exploded perspective view showing the photosensitive drum driving assembly and the image forming apparatus driving head in the third embodiment of the present invention
  • Figure 6 is a perspective view of a photosensitive drum driving assembly in a fourth embodiment of the present invention.
  • Figure 7 is an exploded perspective view showing the photosensitive drum driving assembly and the image forming apparatus driving head in the fifth embodiment of the present invention.
  • Figure 8 is a plan view showing the engagement between the photosensitive drum drive unit and the image forming apparatus driving head in the fifth embodiment of the present invention.
  • Figure 9 is an exploded perspective view showing the photosensitive drum driving assembly and the image forming apparatus driving head in the sixth embodiment of the present invention.
  • Figure 10 is a view showing the relationship between the photosensitive drum driving assembly and the image forming apparatus driving head in the sixth embodiment of the present invention; Top view when engaged; Detailed implementation:
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the photosensitive drum drive unit 10 of the process cartridge of the present invention comprises: a drum gear 2 disposed at an end of the photosensitive drum 1 and connected to the photosensitive drum 1, and the drum gear 2 for transmitting the received driving force to the photosensitive drum 1 a drum shaft 3 extending axially from an end of the drum gear 2, the drum shaft 3 is for rotatably supporting the photosensitive drum 1 during operation of the process cartridge, and axially extending from the end surface of the drum shaft 3 for forming from an image a boss 4 for receiving a driving force on the device driving head 20, the boss 4 has a circular cross section, and the side wall 4b of the boss 4 is provided with a first protruding tooth 5a extending radially along the boss 4, wherein the first The protruding teeth 5a are obliquely disposed on the boss side wall 4b, and the boss 4, the first protruding teeth 5a, the connecting shaft 3 and the drum gear 2 of the above-mentioned photosensitive drum driving assembly are integrally formed of the
  • high-strength resin materials such as POM (polyacetal resin), PC (polycarbonate), ABS (acrylonitrile-styrene-butadiene copolymer), and the like can also be used. material.
  • the image forming apparatus driving head 20 which is coupled with the photosensitive drum driving assembly 10 of the present invention comprises: a recess 11 which is a recessed hole having a twisted corner, and is disposed in the recess 11 There is a circular arc surface 14 and a slanted or twisted corner 13 provided with a twisted surface 12, and when the process cartridge is loaded into the image forming apparatus, the boss 4 can be inserted into the twisted groove 11 and disposed on the boss 4
  • the upper first protruding tooth 5a can be engaged with the twisted surface 12 of the groove 11, and the side wall 4b of the boss 4 can also be tangent to the circular arc surface 14 in the groove 11, thereby ensuring the driving force transmission process.
  • the boss 4 is centered on the center of the groove 11, and the first protruding tooth 5a that is meshed with the image forming apparatus driving head 20 is inclined, so that the image forming apparatus drive head 20 is coupled to the photosensitive drum driving unit 10 It is possible to generate an axial pulling force between each other, so that the photosensitive drum driving assembly 10 can be easily engaged with the image forming apparatus driving head 20, and the photosensitive drum driving assembly 10 does not follow the image during the operation of the image forming apparatus. shape
  • the device driving head 20 is disengaged, so that when the image forming apparatus drives the head 20 to rotate, the first convex teeth 5a on the boss 4 mesh with the twisted surface 12 in the driving head groove 11, thereby driving the boss 4 to rotate.
  • the photosensitive drum drive unit 10 is tangential to the arcuate surface 14 of the image forming apparatus recess 11 by the boss side wall 4b to realize the center coincidence of the photosensitive drum drive unit 10 and the image forming apparatus drive head 20.
  • the photosensitive drum driving assembly boss is provided with a recessed hole 4a
  • the image forming apparatus is provided with the photosensitive drum driving component in the driving head recess 11.
  • the positioning post 15 having the inner diameter of the recessed hole 4a is tangentially engaged with the positioning post 15 by the recessed hole 4a to urge the photosensitive drum driving assembly 10 and the image forming apparatus driving head 20 during the driving force transmission.
  • the center coincides with the center.
  • the image forming apparatus drives the head recess 11
  • the groove 11 is also provided with a circular arc surface 14 which is tangentially engaged with the photosensitive drum drive assembly boss side wall 4b.
  • the groove 11 can also be provided with two or more polygonal cross-sections with multiple corners symmetrical along the center point of the groove 11, wherein the corner is inclined Or distorted state.
  • the boss 4 of the photosensitive drum driving assembly 10 is provided with a cutting surface 4d perpendicular to the radial cross section of the boss 4, and the first protruding tooth 5a is disposed on the boss cutting surface 4d. Moreover, the oblique direction of the first convex teeth 5a is parallel to the convex cut surface 4d, so that the photosensitive drum driving assembly 10 with the first inclined convex teeth 5a can be better formed.
  • the photosensitive drum driving assembly bosses The cross section of 4 is arcuate.
  • the inner wall of the image forming apparatus driving head groove 11 is composed of three twisting faces 12, which are located in the photosensitive drum drive during the driving force transmission.
  • the first convex teeth 5a on the assembly boss 4 and the one of the three twist faces 12 in the groove 11 transmit power, and the boss side wall 4b of the photosensitive drum drive assembly and the edge of the image forming device groove 16 is tangentially engaged at the three cut points P1, P2 and P3, thereby achieving center-alignment centering between the photosensitive drum drive unit 10 and the image forming apparatus drive head 20 during the driving force transmission.
  • Example 6 Example 6:
  • the present embodiment is improved on the basis of the above-described embodiment 5, and is photosensitive.
  • a second protruding tooth 5b for engaging the first protruding tooth 5a is disposed in a radial direction of the boss side wall 4b of the drum driving assembly 10, and the first protruding tooth 5a on the boss can be recessed with the image forming device
  • One of the three twisted faces 12 of 11 is engaged, and the second convex tooth 5b disposed on the boss 4 abuts one of the edges of the other two twisted faces to form a line-to-face contact.
  • the support boss 4 is supported during the operation of the photosensitive drum drive assembly 10, so that the photosensitive drum drive assembly boss 4 of the present embodiment is compared with the three-point engagement with the projection 4 and the groove edge 16 in the fifth embodiment.
  • the image forming device groove edge 16 not only tangentially engages the edge 16 of the groove 11 at points pi and p2, but also the land second projection 5b forms line-to-face contact with its corresponding groove edge 16. Thereby adding the boss 4 and the groove 11 Contact area more to ensure the photosensitive drum 20 drive assembly 10 driving stability and reliability of the power transmission apparatus in the image forming process.
  • the boss cross section of the photosensitive drum drive assembly is not limited to the circular shape and the arc shape in the embodiment, and may be set as a quadrangle, a pentagon, or the like.
  • a polygon any one of ordinary skill in the art that can be tangentially engaged with the groove of the image forming apparatus can easily conceive that the shape should be included, and the second convex tooth in the sixth embodiment can also be provided with a plurality of grooves with the image forming device.
  • the end face edges abut, and any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)

Description

说明书 图像形成装置的驱动力传递机构及处理盒
技术领域
本发明涉及一种图像形成装置中的驱动力传递机构及处理盒。 背景技术
碳粉盒是一种能可拆卸地装入图像形成装置主机中的盒， 且该盒作为一个 整体单元包括有一个电子照相感光组件和至少诸如充电器， 显影器， 清洁器等等 之类的处理器的一个。 由于碳粉盒相对于设备主机是可拆卸地安装的， 因此便于 设备的保养。采用电子照相成像方式的电子照相图像形成装置是这样工作的： 通 过图像形成装置的光对充电器均匀充电的电子照相感光组件进行有选择的曝光 来形成静电潜像， 该潜象由显影器用调色剂显影成调色剂象， 所形成的调色剂象 由转印器转印到记录介质上， 以在记录材料上形成图像。
如图 1所示， 在现有技术中公开了一种位于碳粉盒上的感光鼓驱动头 17与图 像形成装置驱动头 18之间的动力传递方式，图像形成装置驱动头 18的端部设置有 一个螺旋状三角形凹槽 18a， 而感光鼓驱动头 17的端部对应地设置有一个螺旋状 的三角形凸起 17a与上述三角形凹槽 18a配合传动，此方式虽然能传递驱动力， 但 在驱动力传递的过程中螺旋三角形凸起 17£1和螺旋三角形凹槽 18a的旋转中心很 难实现同轴对中， 而且螺旋形的三角形凸起 17a结构制作工艺复杂， 而且开模所 需的成本比较高， 长时间使用后感光鼓驱动头 17也较容易变形损坏， 进而影响传 动精度和效率。 发明内容
本发明提供图像形成装置的驱动力传递机构，以解决现有图像形成装置的驱 动力传递机构的感光鼓驱动头制作工艺复杂和因长时间使用后容易变形损坏而 影响传动精度和效率的技术问题。
为了解决以上技术问题，本发明采取的技术方案是：
一种图像形成装置的驱动力传递机构， 包括感光鼓驱动组件和图像形成装 置驱动头， 感光鼓驱动组件包括：从感光鼓端部轴向伸出并可以在工作过程中旋 转地支撑感光鼓的鼓轴和从鼓轴端面轴向伸出的凸台，所述图像形成装置驱动头 上设置有与所述凸台匹配的带有扭曲面的凹槽，所述凹槽横截面为带有转角的多 边形， 其特征是， 所述凸台的侧壁上设置有沿凸台径向延伸的凸齿， 所述凸齿倾 斜地设置在凸台侧壁上。
所述凸台上侧壁与所述凹槽内壁相切。
所述凸台上设置有凹孔， 所述凹槽内设置有与所述凹孔内径相切的定位柱。 所述凹槽的转角处为倾斜或扭曲。
所述凸台的横截面为圆形。
所述凸台的横截面为多边形。
所述凸齿包括第一凸齿和第二凸齿，所述第一凸齿啮合扭曲凹槽的一个扭曲 面， 所述第二凸齿与扭曲凹槽端面的棱边抵接。
所述凸台上设置凸齿的位置处还设置有一个垂直于凸台径向横截面的切面， 所述凸齿的倾斜方向平行于所述凸台切面。
所述圆柱凸台、 凸齿以及鼓轴为同种材料一体制作成型。
所述材料为 P0M、 ABS、 PC和铜中的一种。
本发明同时提供相应的处理盒，包括感光鼓以及设置在感光鼓端部的感光鼓 驱动组件，感光鼓驱动组件包括： 从感光鼓端部轴向伸出并可以在工作过程中旋 转地支撑感光鼓的鼓轴以及从鼓轴端面轴向伸出用于与图像形成装置驱动头中 带有扭曲面的凹槽匹配的凸台，所述凹槽横截面为带有转角的多边形，其特征是， 所述凸台的侧壁上设置有沿凸台径向延伸的凸齿，所述凸齿倾斜地设置在凸台侧 壁上。
所述凸台上侧壁与所述凹槽内壁相切。
所述凸台上设置有凹孔， 所述凹槽内设置有与所述凹孔内径相切的定位柱。 所述凸台的横截面为圆形。
所述凸台的横截面为多边形。
所述凸齿包括第一凸齿和第二凸齿，所述第一凸齿啮合扭曲凹槽的一个扭曲 面， 所述第二凸齿与扭曲凹槽端面的棱边抵接。
所述凸台上设置凸齿的位置处还设置有一个垂直于凸台径向横截面的切面， 所述凸齿的倾斜方向平行于所述凸台切面。
所述圆柱凸台、 凸齿以及鼓轴为同种材料一体制作成型。
所述材料为 P0M、 ABS、 PC和铜中的一种。
在采用了上述技术方案后，由于在驱动力传递过程中感光鼓驱动组件凸 台侧壁与图像形成装置驱动头凹槽内壁始终相切，这样可以有效地保证了感光鼓 驱动组件与图像形成装置驱动头的旋转中心同轴对中，避免了两者在驱动力传递 过程中产生不必要的晃动，这样凸台上的凸齿与驱动头凹槽中的扭曲面啮合， 从 而带动凸台转动，便可实现凸台与图像形成装置驱动头的同步同轴转动， 而且本 技术方案中感光鼓驱动头结构设计简单，大大节约了感光鼓驱动组件的设计制作 成本， 即使长时间使用感光鼓驱动头也不容易损坏，解决了现有图像形成装置的 驱动力传递机构感光鼓驱动头制作工艺复杂、开模成本高和因长时间使用后容易 变形损坏而影响传动精度和效率的技术问题。 附图说明：
图 1是现有技术中图像形成装置驱动头与感光鼓驱动头之间的分解示图； 图 2是本发明第一实施例中感光鼓驱动组件的立体示图；
图 3 是本发明第一实施例中感光鼓驱动组件与图像形成装置驱动头之间的 分解示图；
图 4 是本发明第二实施例中感光鼓驱动组件与图像形成装置驱动头之间的 分解示图；
图 5 是本发明第三实施例中感光鼓驱动组件与图像形成装置驱动头之间的 分解示图；
图 6是本发明第四实施例中感光鼓驱动组件立体示图；
图 7 是本发明第五实施例中感光鼓驱动组件与图像形成装置驱动头之间的 分解示图；
图 8 是本发明第五实施例中感光鼓驱动组件与图像形成装置驱动头之间的 啮合时的俯视图；
图 9 是本发明第六实施例中感光鼓驱动组件与图像形成装置驱动头之间的 分解示图；
图 10是本发明第六实施例中感光鼓驱动组件与图像形成装置驱动头之间的 啮合时的俯视图; 具体实施方式：
下面通过具体的实施方式并结合附图对本发明做进一步详细说明。 应当理 解， 此处所描述的具体实施例仅仅用以解释本发明， 并不用于限定本发明。
实施例一：
如图 2所示， 本发明处理盒的感光鼓驱动组件 10包括： 设置在感光鼓 1端 部与感光鼓 1连接的鼓齿轮 2， 鼓齿轮 2用于将接收的驱动力传递给感光鼓 1， 从鼓齿轮 2端部轴向伸出的鼓轴 3， 鼓轴 3用于在处理盒工作过程中可旋转地支 撑感光鼓 1， 从鼓轴 3端面轴向伸出， 用于从图像形成装置驱动头 20上接收驱 动力的凸台 4， 凸台 4的横截面为圆形， 凸台 4的侧壁 4b上设置有沿凸台 4径 向延伸的第一凸齿 5a， 其中第一凸齿 5a倾斜地设置在凸台侧壁 4b上， 且上述 感光鼓驱动组件中凸台 4，第一凸齿 5a， 连接轴 3以及鼓齿轮 2为同种材料一体 制作成型， 从材料的强度和性能考虑， 可以优选 POM (聚甲醛树脂） 、 PC (聚碳 酸脂） 、 ABS (丙烯腈 -苯乙烯-丁二烯共聚物） 等高强度树脂材料， 同样也可以 用像铜之类的金属材料。
如图 3所示，与本发明感光鼓驱动组件 10相配合传动的图像形成装置驱动 头 20包括： 一个凹槽 11， 凹槽 11为带有一个扭曲面转角的凹孔， 凹槽 11内设 置有一个圆弧面 14以及一个倾斜或扭曲的转角 13， 转角 13设置有扭曲面 12， 当处理盒装入图像形成装置后， 凸台 4便可以插入扭曲凹槽 11中， 设置在凸台 4上的第一凸齿 5a可与凹槽 11中扭曲面 12的啮合， 而凸台 4的侧壁 4b也可以 与凹槽 11内的圆弧面 14相切， 从而保证在驱动力传递过程中凸台 4与凹槽 11 的中心重合对中，由于与图像形成装置驱动头 20啮合传动的第一凸齿 5a为倾斜 状，使得图像形成装置驱动头 20在与感光鼓驱动组件 10结合的过程中可以产生 一个相互之间的轴向拉力， 这样可以很容易地使感光鼓驱动组件 10与图像形成 装置驱动头 20 完成啮合， 并且在图像形成装置运转过程中感光鼓驱动组件 10 不至于从图像形成装置驱动头 20中脱出，这样， 当图像形成装置驱动头 20转动 时， 凸台 4上的第一凸齿 5a与驱动头凹槽 11中的扭曲面 12啮合， 从而带动凸 台 4转动， 便可实现凸台 4与图像形成装置驱动头 20的同步转动， 最后凸台 4 将所从图像形成装置驱动头 20上接收的驱动力经过与之相连的连接轴 3以及鼓 齿轮 2传递给感光鼓 1， 从而带动感光鼓 1的转动。 实施例二：
在实施例一中， 感光鼓驱动组件 10是靠凸台侧壁 4b与图像形成装置凹槽 11的圆弧面 14相切来实现感光鼓驱动组件 10与图像形成装置驱动头 20的中心 重合对中的， 如图 4所示， 相比与实施例一， 本实施例中， 感光鼓驱动组件凸台 上设置有凹孔 4a， 图像形成装置驱动头凹槽 11 内设置有与感光鼓驱动组件 10 上的凹孔 4a内径相切的定位柱 15， 在驱动力传递过程中， 依靠凹孔 4a与定位 柱 15的相切啮合来促使感光鼓驱动组件 10与图像形成装置驱动头 20之间的中 心重合对中。 实施例三：
如图 5所示， 为了使感光鼓驱动组件 10与图像形成装置驱动头 20之间结 合的周期相对缩短， 进一步提高驱动力的传动效率， 本实施例中， 图像形成装置 驱动头凹槽 11中设置有 3个可以与感光鼓驱动组件第一凸齿 5a啮合的带有扭曲 面的转角 13， 凹槽 11 内也设置有与感光鼓驱动组件凸台侧壁 4b相切啮合的圆 弧面 14， 这样， 在感光鼓驱动组件 10与图像形成装置驱动头 20结合时， 凸台 将会在不超过图像形成装置驱动头 20转动的三分之一周期内实现与图像形成装 置凹槽 11中扭曲面 12的啮合， 同样的依照所需结合周期的不同要求， 凹槽 11 也可以设置 2个或更多的沿凹槽 11中心点对称的带有多转角的多边形横截面， 其中转角处为倾斜或扭曲状态。 实施例四：
如图 6所示， 本实施例中， 感光鼓驱动组件 10的凸台 4上设置有一个垂直 于凸台 4径向横截面的切面 4d， 第一凸齿 5a设置在凸台切面 4d上， 且第一凸 齿 5a的倾斜方向平行于凸台切面 4d，这样可以更好的实现带有第一倾斜凸齿 5a 的感光鼓驱动组件 10的制作成型， 本实施例中感光鼓驱动组件凸台 4的横截面 为弓形。 实施例五：
如图 7和图 8所示， 相比与实施例三， 本实施例中， 图像形成装置驱动头 凹槽 11的内壁由三个扭曲面 12组成，在驱动力传递过程中， 位于感光鼓驱动组 件凸台 4上的第一凸齿 5a与与凹槽 11中的三个扭曲面 12中的其中一个啮合传 递动力，感光鼓驱动组件的凸台侧壁 4b与图像形成装置凹槽的棱边 16在三个切 点 Pl， P2和 P3处相切啮合， 从而实现在驱动力传递过程中感光鼓驱动组件 10 与图像形成装置驱动头 20之间的中心重合对中。 实施例六：
如图 9和图 10所示， 为了更进一步的提高感光鼓驱动组件 10与图像形成 装置驱动头 20之间啮合传动的稳定性， 本实施例在上述实施例 5的基础上加以 改进，在感光鼓驱动组件 10的凸台侧壁 4b的径向延伸方向上设置一个用来配合 第一凸齿 5a传动的第二凸齿 5b， 凸台上的第一凸齿 5a可与图像形成装置凹槽 11中三个扭曲面 12的其中一个啮合， 而设置在凸台 4上的第二凸齿 5b则与另 外的两个扭曲面相对应棱边中的其中一条抵接形成线与面的接触，用于在感光鼓 驱动组件 10运转的过程中支撑凸台 4， 这样， 相比与实施例五中凸台 4与凹槽 棱边 16的三点啮合， 本实施例感光鼓驱动组件凸台 4与图像形成装置凹槽棱边 16不仅在点 pi和 p2处与凹槽 11的棱边 16相切啮合， 而且凸台第二凸齿 5b与 其对应的凹槽棱边 16形成线与面的接触，从而增加了凸台 4和凹槽 11的接触面 积，更加保证了感光鼓驱动组件 10在图像形成装置驱动头 20在动力传递过程中 的稳定性和可靠性。
以上所述仅为本发明的较佳实施例而已， 可以理解的是， 感光鼓驱动组件的 凸台横截面也不限于实施例中的圆形以及弓形， 也可以设置成四边形、五边形等 多边形，凡是能与图像形成装置凹槽啮合相切的普通技术人员能够很容易想到形 状应该都包含在内，而实施例六中的第二凸齿也同样可以设置多个与图像形成装 置凹槽的端面棱边抵接，所以凡在本发明的精神和原则之内所作的任何修改、等 同替换和改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种图像形成装置的驱动力传递机构， 包括感光鼓驱动组件和图像形成装置 驱动头， 感光鼓驱动组件包括：从感光鼓端部轴向伸出并可以在工作过程中旋转 地支撑感光鼓的鼓轴和从鼓轴端面轴向伸出的凸台，所述图像形成装置驱动头上 设置有与所述凸台匹配的带有扭曲面的凹槽，所述凹槽横截面为带有转角的多边 形， 其特征是， 所述凸台的侧壁上设置有沿凸台径向延伸的凸齿， 所述凸齿倾斜 地设置在凸台侧壁上。
2、 如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是， 所述凸台 上侧壁与所述凹槽内壁相切。
3、 如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是， 所述凸台 上设置有凹孔， 所述凹槽内设置有与所述凹孔内径相切的定位柱。
4、如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是，所述凹槽的 转角处为倾斜或扭曲。
5、如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是，所述凸台的 横截面为圆形。
6、如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是，所述凸台的 横截面为多边形。
7、 如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是， 所述凸齿 包括第一凸齿和第二凸齿，所述第一凸齿啮合扭曲凹槽的一个扭曲面， 所述第二 凸齿与扭曲凹槽端面的棱边抵接。
8、 如权利要求 1所述的图像形成装置的驱动力传递机构， 其特征是， 所述凸台 上设置凸齿的位置处还设置有一个垂直于凸台径向横截面的切面，所述凸齿的倾 斜方向平行于所述凸台切面。
9、 如权利要求 1至 8任意一项所述的图像形成装置的驱动力传递机构， 其特征 是， 所述圆柱凸台、 凸齿以及鼓轴为同种材料一体制作成型。
10、如权利要求 9所述的图像形成装置的驱动力传递机构， 其特征是， 所述材料 为 P0M、 ABS、 PC和铜中的一种。
11、 一种处理盒， 包括感光鼓以及设置在感光鼓端部的感光鼓驱动组件， 感光鼓 驱动组件包括：从感光鼓端部轴向伸出并可以在工作过程中旋转地支撑感光鼓的 鼓轴以及从鼓轴端面轴向伸出用于与图像形成装置驱动头中带有扭曲面的凹槽 匹配的凸台， 所述凹槽横截面为带有转角的多边形， 其特征是， 所述凸台的侧壁 上设置有沿凸台径向延伸的凸齿， 所述凸齿倾斜地设置在凸台侧壁上。
12、 如权利要求 11所述的处理盒， 其特征是， 所述凸台上侧壁与所述凹槽内壁 相切。
13、 如权利要求 11所述的处理盒， 其特征是， 所述凸台上设置有凹孔， 所述凹 槽内设置有与所述凹孔内径相切的定位柱。
14、 如权利要求 11所述的图像形成装置的驱动力传递机构， 其特征是， 所述凸 台的横截面为圆形。
15、 如权利要求 11所述的处理盒， 其特征是， 所述凸台的横截面为多边形。
16、 如权利要求 11所述的处理盒， 其特征是， 所述凸齿包括第一凸齿和第二凸 齿，所述第一凸齿啮合扭曲凹槽的一个扭曲面， 所述第二凸齿与扭曲凹槽端面的 棱边抵接。
17、 如权利要求 11所述的处理盒， 其特征是， 所述凸台上设置凸齿的位置处还 设置有一个垂直于凸台径向横截面的切面，所述凸齿的倾斜方向平行于所述凸台 切面。
18、 如权利要求 11至 17任意一项所述的处理盒， 其特征是， 所述圆柱凸台、 凸 齿以及鼓轴为同种材料一体制作成型。
19、 如权利要求 18所述的处理盒， 其特征是， 所述材料为 P0M、 ABS、 PC和铜中 的一种。
PCT/CN2011/072841 2010-12-11 2011-04-15 图像形成装置的驱动力传递机构及处理盒 WO2012075762A1 (zh)

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CN108319123B (zh) * 2018-01-21 2024-02-27 珠海市拓佳科技有限公司 作用杆以及具有该作用杆的处理盒
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