WO2012152203A1 - 驱动组件、感光鼓和处理盒 - Google Patents

驱动组件、感光鼓和处理盒 Download PDF

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Publication number
WO2012152203A1
WO2012152203A1 PCT/CN2012/075028 CN2012075028W WO2012152203A1 WO 2012152203 A1 WO2012152203 A1 WO 2012152203A1 CN 2012075028 W CN2012075028 W CN 2012075028W WO 2012152203 A1 WO2012152203 A1 WO 2012152203A1
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WIPO (PCT)
Prior art keywords
drive
driving
head
assembly
drive assembly
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PCT/CN2012/075028
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English (en)
French (fr)
Inventor
乔怀信
范文燚
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珠海天威飞马打印耗材有限公司
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Publication of WO2012152203A1 publication Critical patent/WO2012152203A1/zh

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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
    • G03G15/75—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

Definitions

  • the present invention relates to a drive assembly, a photosensitive drum constructed using such a drive assembly, and a process cartridge.
  • the present application claims priority to Chinese Patent Application No. 201120141861.3, entitled “Driver Assembly, Photosensitive Drum, and Process Cartridge", which is incorporated herein by reference. .
  • Electrophotographic image forming apparatuses include copying machines, laser printers, and the like.
  • a process cartridge inside the electrophotographic image forming apparatus there is usually a process cartridge inside the electrophotographic image forming apparatus, and the process cartridge can be mounted to and detached from the main assembly of the electrophotographic image forming apparatus.
  • a process cartridge prepared by integrally assembling at least one of a developing device, a charging device, and a cleaning device as a processing device into a casing.
  • the existing process cartridge includes the following types: a first process cartridge prepared by assembling a photosensitive drum and a unit composed of a developing device, a charging device, and a cleaning device in a cartridge; by integrally assembling the photosensitive drum and the charging device in the cartridge And a second process cartridge prepared; and a third process cartridge prepared by integrally assembling the photosensitive drum and two processing units composed of a charging device and a cleaning device.
  • the user himself can detachably mount the above process cartridge to the main assembly of the electrophotographic image forming apparatus. Therefore, the user can perform maintenance of the equipment without relying on professional service personnel, thereby improving the operability of the user for the maintenance of the electrophotographic image forming apparatus.
  • the above-described conventional process cartridge it is used to receive a rotational driving force from the apparatus main assembly to drive the photosensitive drum drive mechanism as follows.
  • a rotatable member for transmitting a driving force of the motor, and a non-circular torsion hole for transmitting a driving force of the motor.
  • the torsion hole is disposed at a central portion of the rotatable member, and is provided with a plurality of corner portions and has a A cross section in which the rotatable member rotates integrally.
  • a non-circular torsion projection is provided which is provided at one of the axial ends of the photosensitive drum and has a cross section provided with a plurality of corners.
  • Chinese invention patent CN200920238326.2 provides a photosensitive drum drive assembly comprising a gear and an axial adjustment assembly tightly coupled to one end of the photosensitive drum, the axial adjustment assembly including a first motion subassembly, a groove member and a central shaft member;
  • the groove member has upper and lower sliding grooves that are spatially perpendicular to each other, the first moving subassembly forming a relative sliding fit with the upper sliding groove in a first direction;
  • the central shaft member and the The gears have a common axis that forms a relatively sliding fit with the glide groove in a second direction; both the first direction and the second direction are perpendicular to the drum axis.
  • the first motion subassembly includes a rotary driving force receiving head extending outside the gear and an adjusting slider, and the rotating driving force receiving head is rotatably coupled to the adjusting slider about an axis thereof, the rotation A rotation limit pin rotatable about the axis is disposed between the driving force receiving head and the adjustment slider.
  • a first object of the present invention is to provide a drive assembly which can minimize a dead spot position when a machine is dropped and a process cartridge is taken out, and a jamming problem between the rotary drive force receiving head and the image forming device drive head can be avoided.
  • a second object of the present invention is to provide a photosensitive drum having such a driving assembly.
  • a third object of the present invention is to provide a process cartridge having such a drive assembly.
  • the present invention adopts the following technical solution: providing a driving assembly that can cooperate with an imaging device driving head to transmit a rotational driving force, the driving assembly comprising: a gear having a fixed end; Passing through a central shaft member of the gear, the central shaft member forming a circumferentially interlocking engagement with the gear; a rotational driving force receiving head rotatable about an axis of the central shaft member and forming a circumferential direction with the central shaft member a cooperative engagement; the rotary driving force receiving head includes a housing, a transmission assembly, a driving claw, and a reset member engageable with the driving device of the imaging device, the transmission assembly being coupled to the driving claw, the driving claw having a working position mated with the driving head of the image forming apparatus and a non-working position disengaged from the driving head of the image forming apparatus; when the driving head of the image forming apparatus acts on the driving assembly, the driving claw is at the driving assembly Swinging from the non-working position to the
  • the transmission assembly includes a rack that can be pushed by the driving head of the imaging device, two transmission gears that are engaged on both sides of the rack, and two for fixing the two transmission gears.
  • a support rod the two support rods are parallel to each other and rotatably supported on a bracket body; two of the drive claws, wherein the first drive claw is fixed to one end of the first support rod, the second drive The claw is fixed to the other end of the second support rod.
  • an axially outer end surface of the housing is formed with a concave spherical surface, and a curved surface is formed around the spherical surface.
  • bracket body, the support rod and the transmission gear are located inside the housing, and the rack protrudes outward from the spherical surface by the inside of the housing.
  • the rack is movably disposed on a base relative to the axial direction, and the reset member is disposed between the rack and the base.
  • the rack forms a sliding fit with the base through a rod portion
  • the reset member is a compression spring that is sleeved on the rod portion.
  • the rotary driving force receiving head and the central shaft member are connected by a groove member, the groove member has upper and lower sliding grooves and a sliding groove which are perpendicular to each other in a space, the base and the upper sliding The slot forms a relatively sliding fit, the head of the central shaft member forming a relatively sliding fit with the glide groove.
  • first driving claw has a first engaging groove engageable with the driving head of the image forming apparatus
  • second driving claw has a second engaging groove engageable with the driving head of the image forming apparatus
  • a photosensitive drum comprising a drum main body and a drive assembly mounted at one axial end of the drum main body, the drive assembly comprising: a gear having a fixed end Extending axially through a central shaft member of the gear, the central shaft member forming a circumferentially interlocking engagement with the gear; a rotational drive force receiving head rotatable about an axis of the central shaft member and the central shaft The component forms a circumferentially interlocking fit; the rotary drive force receiving head includes a housing engageable with the imaging device drive head, a drive assembly, a drive pawl and a reset member, the drive assembly being coupled to the drive pawl
  • the driving claw has a working position that cooperates with the driving head of the image forming apparatus and a non-working position that is disengaged from the driving head of the image forming apparatus; when the driving head of the image forming apparatus acts on the driving component, the driving claw is in the The driving assembly
  • a process cartridge comprising: a casing; a photosensitive drum rotatably mounted in the casing, the photosensitive drum comprising a drum body and being mounted on a drive assembly of the drum body at one end in the axial direction, the drive assembly comprising: a gear having a fixed end; a central shaft member passing through the gear in the axial direction, the central shaft member forming a circumferential linkage with the gear a rotary driving force receiving head rotatable about an axis of the central shaft member and forming a circumferential interlocking engagement with the central shaft member; the rotary driving force receiving head including a housing engageable with the imaging device driving head a drive assembly, a drive pawl and a reset member, the drive assembly being coupled to the drive pawl, the drive pawl having a working position cooperating with the imaging device drive head and a non-working position disengaged from the imaging device drive head When the imaging device driving head acts
  • the driving device driving head acts on the transmission component
  • the driving claw is swung by the driving component to the working position that cooperates with the driving head of the imaging device by the non-working position disengaged from the driving head of the imaging device, thereby ensuring the normal driving function.
  • the image forming apparatus drive head is disengaged from the transmission assembly, and the resetting member acts on the driving claw through the transmission assembly, so that the driving claw is swung from the working position to the non-working position, so that the processing box is not blocked by the driving head of the imaging device, Take it out smoothly.
  • the invention can minimize the dead zone position when the machine is dropped and the process cartridge is taken out, and the problem of jamming between the rotary driving force receiving head and the driving head of the image forming apparatus is avoided, so that the photosensitive drum can be driven safely and reliably.
  • the driving component of the invention is simple and convenient to assemble, and has stable structural performance.
  • the processing box constructed by using the driving component is stable, reliable in performance and stable in operation.
  • FIG. 1 is a schematic view showing the structure of a process cartridge to which a driving assembly of an embodiment of the present invention is applied.
  • Figure 2 is a schematic view showing the structure of the photosensitive drum of Figure 1.
  • FIG. 3 is a schematic view showing the structure of the non-operating state of the driving assembly of FIG. 2.
  • FIG. 4 is a schematic view showing the structure of the operating state of the driving assembly shown in FIG.
  • Figure 5 is an exploded perspective view of the drive assembly of Figure 3.
  • Figure 6 is a schematic view showing the structure of the rotary driving force receiving head, the groove member and the center shaft member among the driving assembly shown in Figure 3, in which the housing portion of the rotary driving force receiving head is hidden.
  • Figure 7 is a schematic view showing the structure of a central shaft member among the drive assemblies shown in Figure 3.
  • Figure 8 is a schematic view showing the structure of a gear among the drive assemblies shown in Figure 3.
  • Figure 9a is a front elevational view showing the structural relationship of the drive assembly of Figure 1 prior to contact between the drive assembly and the drive unit of the imaging device during the landing process.
  • Fig. 9b is a perspective view of the state shown in Fig. 9a.
  • FIG. 10 is a schematic view showing the process of the cooperation between the driving component and the driving head of the image forming apparatus in the process cartridge of FIG.
  • Figure 11a is a front elevational view showing the structural relationship of the process cartridge of Figure 1 when the drive assembly is engaged with the drive unit of the image forming apparatus during the landing process.
  • Figure 11b is a perspective view of the state shown in Figure 11a.
  • FIG. 12 is a schematic diagram showing the process of the cooperation between the driving component and the driving head of the imaging device during the offline process of the process cartridge shown in FIG. 1.
  • FIG. 12 is a schematic diagram showing the process of the cooperation between the driving component and the driving head of the imaging device during the offline process of the process cartridge shown in FIG. 1.
  • Figure 13 is a schematic diagram showing the relationship of the mechanism of the process cartridge of Figure 1 after the drive assembly is disengaged from the drive head of the image forming apparatus during the offline process.
  • a process cartridge 10 of the present invention includes a cartridge body 101 and a photosensitive drum 20 rotatably mounted in the cartridge body 101.
  • the photosensitive drum 20 includes a drum main body 201 and a driving assembly 1 fixed at one axial end of the drum main body 201.
  • the drum main body 201 has a photosensitive layer on the circumferential surface thereof, and the driving assembly 1 is for receiving an image forming apparatus (such as a printer).
  • the rotational driving force of the driving head 7 is transmitted to the drum main body 201, and the drum main body 201 is rotated about its axis by the rotational driving force.
  • the photosensitive drum is also substantially similar to the photosensitive drum of the prior art, and the difference lies mainly in the construction of one axial end of the photosensitive drum.
  • the drive assembly is therefore described below primarily with respect to embodiments of the drive assembly.
  • the drive assembly 1 includes a gear 2, a center shaft member 3, a rotary driving force receiving head 4, a groove member 5, a limit pin 6, a compression spring 8, and the like.
  • the inner end of the gear 2 is a fixed end 21 by which the gear 2 can be fixed to one end of the drum main body 201.
  • the cross-sectional shape of the stem portion 32 of the central shaft member 3 is waist-shaped, and the stem portion 32 passes axially through a substantially uniform waist-shaped bore 22 in the gear 2 such that the central shaft member 3 and the gear 2 are interposed therebetween. Form a circumferential linkage.
  • the center shaft member 3 is composed of a head portion 31 and a rod portion 32, and has a substantially T-shape.
  • the head 31 has a thin plate shape
  • the cross-sectional shape of the rod portion 32 is also waist-shaped, but the cross-sectional area of the rod portion 32 is smaller than the area of the head portion 31.
  • the inner end of the rod portion 32 is provided with a pin hole 33 penetrating the rod portion 32, and the pin hole 33 is available for the limit pin 6 to pass through, and is axially restrained by the limit pin 6 to prevent the center shaft member 3 from the gear 2 Get out of the middle.
  • the outer circumferential surface of the gear 2 has a transmission ring gear 24, and the gear 2 is internally provided with a partition plate 25 perpendicular to the axial direction and a gear chamber 27 located above the partition plate 25.
  • the center position of the partition plate 25 is provided.
  • An upwardly protruding positioning seat 23, the positioning seat 23 is provided with a waist hole 22 having a shape substantially equal to the cross-sectional shape of the rod portion 32 of the central shaft member 3, and the rod portion 32 can only be Axial movement is achieved within the waisted bore 22.
  • the circumferential side wall 26 of the gear chamber 21 provides a limit for the radially reciprocating translational movement of the trough member 5.
  • the rotary driving force receiving head 4 is coupled to the head portion 31 of the center shaft member 3 through the groove member 5, and the rotary driving force receiving head 4 is rotatable about the axis of the center shaft member 3 by the action of the image forming apparatus driving head 7, thereby The rotational driving force is sequentially transmitted to the groove member 5, the center shaft member 3, the gear 2, and the drum main body 201.
  • the compression spring 8 is fitted over the center shaft member 3 and sandwiched between the groove member 5 and the partition 25 of the gear 2.
  • the axial adjustment assembly consisting of the rotary drive force receiving head 4, the groove member 5 and the central shaft member 3 can be along the axial direction of the drive assembly 1, relative to the gear 2 for limited axial reciprocating translational motion.
  • the rotary driving force receiving head 4 includes a housing 41, a bracket body 42, a rack 43, a first support rod 44, a first transmission gear 45, a first driving claw 46, and a second supporting rod. 47.
  • the axially outer end surface of the housing 41 is formed with a concave spherical surface 411, and a periphery of the spherical surface 411 is formed with a cut-in surface 412 which is cut into a spherical surface at the end of the longitudinal axis portion 72 of the image forming apparatus driving head 7.
  • 411 provides guidance, the end of the longitudinal axis portion 72 being spherical, and the shape of the spherical surface 411 coincides exactly with the end of the longitudinal axis portion 72.
  • the rack 43 is formed in a sliding fit with the base 431 by a rod portion 432 so as to be relatively movable in the axial direction on the base 431.
  • the rod portion 432 is sleeved with a rack return compression spring 433 disposed between the rack 43 and the base 431.
  • the bracket body 42, the first support rod 44, the second support rod 47, the first transfer gear 45 and the second transfer gear 48 are all located inside the casing 41, and the rack 43 is from the inside of the casing 41.
  • the spherical surface 411 protrudes outward.
  • the first transmission gear 45 is fixed in the middle of the first support rod 44
  • the second transmission gear 48 is fixed in the middle of the second support rod 47
  • the first transmission gear 45 and the second transmission gear 48 are meshed on both sides of the rack 43.
  • the first driving claw 46 is fixed to one end of the first supporting rod 44
  • the second driving claw 49 is fixed to the other end of the second supporting rod 47.
  • the first driving claw 46 has a drive head with an image forming apparatus.
  • the drive pin 71 of the 7 is engaged with the first engaging groove 461, and the second drive claw 49 has a second engaging groove 491 engageable with the driving head 7 of the image forming apparatus.
  • the first support rod 44 and the second support rod 47 are parallel to each other and rotatably supported on the bracket body 42.
  • the groove member 5 has an upper chute 51 and a glide groove 52 which are spatially perpendicular to each other, and the base 431 of the rack 43 forms a relative sliding fit with the upper chute 51, and the head 31 of the center shaft member 3 A sliding fit is formed with the sliding groove 52.
  • the axial direction is moved inwardly relative to the gear 2 so that the end portion of the longitudinal shaft portion 72 of the image forming apparatus driving head 7 can smoothly enter the spherical surface 411 to be in contact with the rack 43; when the end portion of the longitudinal shaft portion 72 enters the spherical surface After 411, the axial adjustment assembly can be moved outwardly relative to the gear 2 in the axial direction by the compression spring 8.
  • the rack 43 moves inward under the pressing of the end portion of the longitudinal shaft portion 72 of the image forming apparatus driving head 7.
  • the rack return compression spring 433 drives the first support rod 44 and the first by resetting the rack 43
  • the two supporting rods 47 rotate outwardly toward each other, so that the first driving claw 46 and the second driving claw 49 are swung from the working position to the non-working position by the first supporting rod 44 and the second supporting rod 47, respectively.
  • the process cartridge 10 is not blocked by the image forming apparatus driving head 7, and can be taken out smoothly.
  • the above-described axial adjustment assembly is also movable in the axial direction of the drive assembly 1 with respect to the gear 2 during the offline process of the process cartridge 10.
  • the limit pin can be implemented using other axial limit structures that are readily apparent to those skilled in the art.
  • the axial stop structure can be a separate member from the central shaft member or a member formed on the central shaft member. section.
  • the above-mentioned compression spring can also be replaced by other elastic members, such as a resilient plastic member structure that can be compressed; the cross-sectional shape of the rod portion of the central shaft member and the shape of the through hole on the gear partition are not limited to the waist.
  • the shape may also be any shape having two flat sides, such as a rectangular shape, a flat quadrangular shape, or the like, as long as the axial adjustment assembly can only be axially translated relative to the gear, and cannot be rotated and rotated about the axis with respect to the gear. Just fine.
  • the drive assembly, photosensitive drum and process cartridge of the present invention can be manufactured and used industrially.
  • the driving claw in the process of mounting to the image forming apparatus, when the image forming apparatus driving head acts on the transmission assembly, the driving claw is driven by the transmission assembly by a non-working position that is disengaged from the driving head of the image forming apparatus.
  • the swinging to the working position with the driving head of the image forming apparatus ensures that the driving function is normally performed.
  • the image forming apparatus drive head is disengaged from the transmission assembly, and the resetting member acts on the driving claw through the transmission assembly, so that the driving claw is swung from the working position to the non-working position, so that the processing box is not blocked by the driving head of the imaging device, Take it out smoothly.
  • the invention can minimize the dead zone position when the machine is dropped and the process cartridge is taken out, and the problem of jamming between the rotary driving force receiving head and the driving head of the image forming apparatus is avoided, so that the photosensitive drum can be driven safely and reliably.
  • the driving component of the invention is simple and convenient to assemble, and has stable structural performance.
  • the processing box constructed by using the driving component is stable, reliable in performance and stable in operation. Therefore, the present invention has industrial applicability.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Electrophotography Configuration And Component (AREA)

Abstract

本发明提供了一种驱动组件（1）、采用这种驱动组件（1）构建的感光鼓（20）及处理盒（10），所述驱动组件（1）包括壳体（41）、传动组件、驱动爪（46，49）和复位部件（8），传动组件连接于驱动爪（46，49），驱动爪（46，49）具有与成像设备驱动头（7）配合的工作位置和与成像设备驱动头（7）脱离的非工作位置；当成像设备驱动头（7）作用于传动组件时，驱动爪（46，49）由非工作位置摆动至工作位置；当成像设备驱动头（7）脱离传动组件时，复位部件（8）通过传动组件作用于驱动爪（46，49），使驱动爪（46，49）由工作位置摆动至非工作位置。

Description

驱动组件、感光鼓和处理盒 技术领域
本发明涉及驱动组件、采用这种驱动组件构建的感光鼓及处理盒。本申请要求于2011年05月06日提交中国专利局、申请号为201120141861.3、名称为“驱动组件、感光鼓和处理盒”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
背景技术
电子照相成像设备包括复印机、激光打印机以及类似设备。
　　电子照相成像设备内通常有一个处理盒，并且处理盒能够安装至电子照相成像设备的主组件上并从主组件上拆卸。例如，通过将一个带有感光鼓、以及作为处理装置的显影装置、充电装置和清洁装置中的至少一个整体地装配到盒体中而制备的处理盒。
　　现有处理盒包括以下种类：通过将感光鼓和由显影装置、充电装置及清洁装置组成的整体装配在盒中而制备的第一种处理盒；通过将感光鼓以及充电装置整体装配在盒中而制备的第二种处理盒；以及通过整体装配感光鼓以及由充电装置和清洁装置组成的两个处理单元而制备的第三种处理盒。
　　使用者自己能够将上述处理盒以可拆卸方式安装至电子照相成像设备主组件。因此，使用者可以进行设备的维护，而无需依赖专业的服务人员，进而，改进了用户对电子照相成像设备维护的可操作性。在上述传统的处理盒中，用于从设备主组件接收旋转驱动力以便驱动感光鼓驱动机构如下。
　　在主组件侧，设置有可旋转件和一非圆形扭转孔，可旋转件用于传递电机的驱动力，扭转孔设置在可旋转件的中心部，设有多个角部且具有可以与可旋转件一体转动的横截面。
　　在处理盒侧，设置一非圆形扭转突起，突起设置在感光鼓的其中一个轴向端部，并且具有设有多个角部的横截面。当处理盒被装至设备主组件时，可旋转件在突起和孔彼此接合的状态下旋转时，可旋转件的旋转驱动力被传递至感光鼓。结果，用于驱动感光鼓的旋转力从设备主组件传递至感光鼓。另一种已知的机构是通过啮合固定于感光鼓的齿轮而驱动感光鼓，进而驱动感光鼓构成的处理盒。然而，在美国专利 US5903803 中所描述的传统构造中，当通过沿着与可旋转件的轴线大致垂直的方向移动处理盒而将处理盒安装至主组件或者从主组件拆除时，需要使可旋转件沿着水平方向移动。即，需要通过主组件盖的打开和关闭操作而使可旋转件水平移动。通过所述主组件盖的打开操作，孔与突起分离。另一方面，通过主组件盖的关闭操作，孔朝着突起移动以便与突起接合。因此，在传统的处理盒中，需要在主组件上设置一种机构，其用于通过主组件盖的打开和关闭操作而沿着旋转轴线方向移动可旋转件。在美国专利US4829335 所描述的构造中，无需沿着其轴线方向移动设置于主组件的驱动齿轮，所述盒就能够通过沿着大致垂直于所述轴线的方向移动而安装至主组件以及从主组件上拆却。然而，在这种构造中，主组件和处理盒之间的驱动连接部是齿轮之间的啮合部，从而难以防止感光鼓的旋转不均匀性。
　　美国专利申请公开说明书US2008/0152388A1公开了另一种处理盒，其相对上述处理盒的改进点是，位于感光鼓的一个轴向端部的驱动组件是采用圆球式万向节驱动联结结构。这种驱动联结结构存在着易从驱动组件中脱出，特别是在运输过程当中，此现象更易出现，而使驱动组件的功能丧失或工作不稳定。
　　中国发明专利CN200920238326.2提供了一种感光鼓驱动组件，包括紧配于感光鼓一端的齿轮和轴向调整组件，该轴向调整组件包括了第一运动子组件、槽部件和中心轴部件；所述槽部件具有在空间上相互垂直的上滑槽和下滑槽，所述第一运动子组件在第一方向上与所述上滑槽形成相对滑动的配合；所述中心轴部件与所述齿轮具有共同的轴线，其在第二方向上与所述下滑槽形成相对滑动的配合；所述第一方向和第二方向均垂直于感光鼓轴向。所述第一运动子组件包括一伸出所述齿轮外的旋转驱动力接收头和一调整滑块，所述旋转驱动力接收头可绕其轴线旋转地连接于所述调整滑块，所述旋转驱动力接收头与调整滑块之间设有一可绕所述轴线旋转的转动限位销。当处理盒落机或取出时，上述感光鼓驱动组件中的旋转驱动力接收头与成像设备驱动头之间容易发生卡死的问题。因此，上述感光鼓驱动组件尚有进一步改进的空间。
 技术问题
本发明的第一目的是提供一种可最大程度降低落机和取出处理盒时的死点位置区域，避免旋转驱动力接收头与成像设备驱动头之间发生卡死问题的驱动组件。
　　本发明的第二目的是提供一种具有这种驱动组件的感光鼓。
　　本发明的第三目的是提供一种具有这种驱动组件的处理盒。
 技术解决方案
为了实现上述第一目的，本发明采用了以下的技术方案：提供一种驱动组件，可与成像设备驱动头配合以传递旋转驱动力，所述驱动组件包括：具有一固定端的齿轮；沿轴向穿过所述齿轮的中心轴部件，该中心轴部件与所述齿轮形成周向联动的配合；旋转驱动力接收头，可绕所述中心轴部件的轴线旋转并与该中心轴部件形成周向联动的配合；所述旋转驱动力接收头包括可与所述成像设备驱动头配合的壳体、传动组件、驱动爪和复位部件，所述传动组件连接于所述驱动爪，所述驱动爪具有与所述成像设备驱动头配合的工作位置和与所述成像设备驱动头脱离的非工作位置；当所述成像设备驱动头作用于所述传动组件时，所述驱动爪在所述传动组件的带动下由所述非工作位置摆动至所述工作位置；当所述成像设备驱动头脱离所述传动组件时，所述复位部件通过所述传动组件作用于所述驱动爪，使所述驱动爪由所述工作位置摆动至所述非工作位置。
　　进一步的技术方案为，所述传动组件包括可被所述成像设备驱动头推压的齿条、啮合于该齿条两侧的两个传动齿轮以及用于固定所述两个传动齿轮的两根支承杆，所述两根支承杆相互平行并且可转动地支承在一个支架体上；所述驱动爪有两个，其中第一驱动爪固定在第一支承杆的一侧端部，第二驱动爪固定在第二支承杆的另一侧端部。
　　进一步地，所述壳体的轴向外端面形成有内凹的球形面，该球形面的周围形成有切入面。
　　进一步地，所述支架体、支承杆和传动齿轮位于所述壳体的内部，所述齿条由所述壳体的内部从所述球形面向外伸出。
　　进一步地，所述齿条可沿轴向相对移动地设置在一底座上，所述复位部件设置在该齿条与所述底座之间。
　　进一步地，所述齿条通过一杆部与所述底座形成滑动配合，所述复位部件为套在所述杆部上的压缩弹簧。
　　进一步地，所述旋转驱动力接收头与所述中心轴部件之间通过一个槽部件连接，所述槽部件具有在空间上相互垂直的上滑槽和下滑槽，所述底座与所述上滑槽形成相对滑动的配合，所述中心轴部件的头部与所述下滑槽形成相对滑动的配合。
　　进一步地，所述第一驱动爪上具有可与所述成像设备驱动头啮合的第一啮合槽，所述第二驱动爪上具有可与所述成像设备驱动头啮合的第二啮合槽。
　　为了实现上述第二目的，本发明采用了以下的技术方案：提供一种感光鼓，包括鼓主体及安装在所述鼓主体轴向一端的驱动组件，所述驱动组件包括：具有一固定端的齿轮；沿轴向穿过所述齿轮的中心轴部件，该中心轴部件与所述齿轮形成周向联动的配合；旋转驱动力接收头，可绕所述中心轴部件的轴线旋转并与该中心轴部件形成周向联动的配合；所述旋转驱动力接收头包括可与所述成像设备驱动头配合的壳体、传动组件、驱动爪和复位部件，所述传动组件连接于所述驱动爪，所述驱动爪具有与所述成像设备驱动头配合的工作位置和与所述成像设备驱动头脱离的非工作位置；当所述成像设备驱动头作用于所述传动组件时，所述驱动爪在所述传动组件的带动下由所述非工作位置摆动至所述工作位置；当所述成像设备驱动头脱离所述传动组件时，所述复位部件通过所述传动组件作用于所述驱动爪，使所述驱动爪由所述工作位置摆动至所述非工作位置。
　　为了实现上述第三目的，本发明采用了以下的技术方案：提供一种处理盒，包括：盒体；可旋转地安装在所述盒体内的感光鼓,所述感光鼓包括鼓主体及安装在所述鼓主体轴向一端的驱动组件，所述驱动组件包括：具有一固定端的齿轮；沿轴向穿过所述齿轮的中心轴部件，该中心轴部件与所述齿轮形成周向联动的配合；旋转驱动力接收头，可绕所述中心轴部件的轴线旋转并与该中心轴部件形成周向联动的配合；所述旋转驱动力接收头包括可与所述成像设备驱动头配合的壳体、传动组件、驱动爪和复位部件，所述传动组件连接于所述驱动爪，所述驱动爪具有与所述成像设备驱动头配合的工作位置和与所述成像设备驱动头脱离的非工作位置；当所述成像设备驱动头作用于所述传动组件时，所述驱动爪在所述传动组件的带动下由所述非工作位置摆动至所述工作位置；当所述成像设备驱动头脱离所述传动组件时，所述复位部件通过所述传动组件作用于所述驱动爪，使所述驱动爪由所述工作位置摆动至所述非工作位置。
 有益效果
对于采用了本发明驱动组件的处理盒，在安装至成像设备的过程中， 当成像设备驱动头作用于传动组件时，驱动爪在传动组件的带动下由与成像设备驱动头脱离的非工作位置摆动至与成像设备驱动头配合的工作位置，从而保证了驱动功能正常进行。取出处理盒时，成像设备驱动头脱离传动组件，复位部件通过传动组件作用于驱动爪，使驱动爪由所述工作位置摆动至非工作位置，使处理盒不受成像设备驱动头的阻挡，得以顺利取出。本发明能最大程度降低落机和取出处理盒时的死点位置区域，避免了旋转驱动力接收头与成像设备驱动头之间发生卡死的问题，从而能够安全可靠的驱动感光鼓工作。本发明的驱动组件装配简单、方便，结构性能稳定，采用了这种驱动组件构建的处理盒落机平稳、性能可靠、工作稳定顺畅。
附图说明
以下结合附图对本发明作进一步说明。
　　　图1是应用了本发明一种实施例的驱动组件的处理盒结构示意图。
　　　图2是图1当中的感光鼓的结构示意图。
　　　图3是图2当中的驱动组件的非工作状态结构示意图。
　　　图4是图3所示驱动组件的工作状态结构示意图。
　　　图5是图3所示驱动组件的零件分解图。
　　　图6是图3所示驱动组件当中的旋转驱动力接收头、槽部件和中心轴部件的结构示意图，其中隐藏了旋转驱动力接收头的壳体部分。
　　　图7是图3所示驱动组件当中的中心轴部件的结构示意图。
　　　图8是图3所示驱动组件当中的齿轮结构示意图。
　　　图9a是图1所示处理盒在落机过程中，其驱动组件与成像设备驱动头在接触前的结构关系正视图。
　　　图9b是图9a所示状态时的立体图。
　　　图10是图1所示处理盒在落机过程中，其驱动组件与成像设备驱动头的配合过程示意图。
　　　图11a是图1所示处理盒在落机过程中，其驱动组件与成像设备驱动头完成接合时的结构关系正视图。
　　　图11b是图11a所示状态时的立体图。
　　　图12是图1所示处理盒在脱机过程中，其驱动组件与成像设备驱动头的配合过程示意图。
　　　图13是图1所示处理盒在脱机过程中，其驱动组件与成像设备驱动头脱离后的机构关系示意图。
 本发明的实施方式
参见图1，本发明的处理盒10包括了盒体101及可旋转地安装在盒体101内的感光鼓20。参见图2，该感光鼓20包括鼓主体201及固定在鼓主体201轴向一端的驱动组件1，鼓主体201的周面上具有感光层，驱动组件1用于接收来自于成像设备（如打印机）驱动头7的旋转驱动力，并将该旋转驱动力传递给鼓主体201，使鼓主体201在该旋转驱动力作用下绕其轴线旋转。由于本发明的处理盒基本与本文背景技术中描述的各种现有处理盒基本类似，感光鼓也与现有技术中的感光鼓基本类似，不同处主要在于构建于感光鼓一个轴向端部的驱动组件，因此，以下主要对驱动组件的实施例进行说明。
　　　参见图3至图6，驱动组件1包括了齿轮2、中心轴部件3、旋转驱动力接收头4、槽部件5、限位销6以及压缩弹簧8等。齿轮2的内端为固定端21，通过该固定端21可将齿轮2固定于鼓主体201的一端。中心轴部件3的杆部32的横截面形状呈腰形，该杆部32沿轴向穿过齿轮2内的一个大小基本一致的腰形孔22，从而使中心轴部件3与齿轮2之间形成周向联动的配合。
　　　参见图7，中心轴部件3由头部31和杆部32组成，大致呈T字形。其中，头部31呈腰形的薄板状，杆部32的横截面形状同样呈腰形，但杆部32的横截面积小于头部31的面积。杆部32的内端设有贯穿杆部32的销孔33，该销孔33可供限位销6穿过，通过限位销6进行轴向限位，可防止中心轴部件3从齿轮2中脱出。
　　　参见图8，齿轮2的外圆周面上具有传动齿圈24，齿轮2内部设有垂直于轴向的隔板25以及位于隔板25上方的齿轮腔27，该隔板25的中心位置设有向上凸起的定位座23，该定位座23开有一腰形孔22，该腰形孔22的形状大小与中心轴部件3的杆部32的横截面形状大小基本相等，杆部32仅能在该腰形孔22内实现轴向的移动。齿轮腔21的周向侧壁26为槽部件5的径向往复平移运动提供限位。
　　旋转驱动力接收头4通过槽部件5连接于中心轴部件3的头部31，该旋转驱动力接收头4可在成像设备驱动头7的作用下绕该中心轴部件3的轴线旋转，从而将旋转驱动力依次传递至槽部件5、中心轴部件3、齿轮2及鼓主体201。压缩弹簧8套在中心轴部件3上，夹在槽部件5与齿轮2的隔板25之间。通过压缩弹簧8的压缩以及限位销6的轴向限位，旋转驱动力接收头4、槽部件5和中心轴部件3组成的轴向调整组件可沿驱动组件1的轴向、相对于齿轮2作有限制的轴向往复平移运动。
　　参见图4至图6，所述旋转驱动力接收头4包括壳体41、支架体42、齿条43、第一支承杆44、第一传动齿轮45、第一驱动爪46、第二支承杆47、第二传动齿轮48、第二驱动爪49，其中，齿条43、第一支承杆44、第一传动齿轮45、第二支承杆47和第二传动齿轮48构成连接于第一传动齿轮45和第二驱动爪49的传动组件。
　　壳体41的轴向外端面形成有内凹的球形面411，该球形面411的周围形成有切入面412，该切入面412为成像设备驱动头7的纵轴部分72的端部切入球形面411提供导向，纵轴部分72的端部为球面，球形面411的形状与纵轴部分72的端部正好吻合。齿条43通过一杆部432与底座431形成滑动配合，从而可沿轴向相对移动地设置在底座431上。杆部432上套有设置在齿条43与底座431之间的齿条复位压缩弹簧433。所述支架体42、第一支承杆44、第二支承杆47、第一传动齿轮45和第二传动齿轮48均位于壳体41的内部，而齿条43则由该壳体41的内部从球形面411向外伸出。
　　第一传动齿轮45固定在第一支承杆44的中部，第二传动齿轮48固定在第二支承杆47的中部，并且第一传动齿轮45和第二传动齿轮48啮合于齿条43的两侧。第一驱动爪46固定在第一支承杆44的一侧端部，第二驱动爪49固定在第二支承杆47的另一侧端部，第一驱动爪46上具有可与成像设备驱动头7的驱动销71啮合的第一啮合槽461，第二驱动爪49上具有可与成像设备驱动头7啮合的第二啮合槽491。第一支承杆44与第二支承杆47相互平行并且可转动地支承在支架体42上。通过第一支承杆44和第二支承杆47的转动，可使第一传动齿轮45和第二驱动爪49产生与成像设备驱动头7配合的工作位置和与成像设备驱动头7脱离的非工作位置。
　　所述槽部件5具有在空间上相互垂直的上滑槽51和下滑槽52，所述齿条43的底座431与上滑槽51形成相对滑动的配合，所述中心轴部件3的头部31与下滑槽52形成相对滑动的配合。
　　参见图9a、图9b和图10，在处理盒10的落机过程中，在驱动组件1与成像设备驱动头7接触前，第一驱动爪46和第二驱动爪49处于非工作位置，齿条43从壳体41的球形面411向外伸出。此时如果成像设备驱动头7是从壳体41的切入面412切入球形面411的话，旋转驱动力接收头4、槽部件5和中心轴部件3组成的轴向调整组件可沿驱动组件1的轴向、相对于齿轮2向内移动，以使成像设备驱动头7的纵轴部分72端部能顺利进入到球形面411而与齿条43接触；当纵轴部分72端部进入到球形面411之后，上述轴向调整组件可在压缩弹簧8的作用下沿轴向相对于齿轮2向外移动。当成像设备驱动头7接触到齿条43并将其沿轴向向内推压时，齿条43在成像设备驱动头7的纵轴部分72端部的抵压下而往内运动。如图11a和11b，通过齿条43与第一传动齿轮45及第二传动齿轮48的啮合传动，使第一支承杆44和第二支承杆47发生朝内的相向转动，第一驱动爪46和第二驱动爪49分别在第一支承杆44和第二支承杆47的带动下，由非工作位置摆动至工作位置，从而保证了驱动功能正常进行。
　　参见图12和图13，在处理盒10的脱机过程中，当成像设备驱动头7脱离齿条43时，齿条复位压缩弹簧433通过使齿条43复位而带动第一支承杆44和第二支承杆47发生朝外的相向转动，使第一驱动爪46和第二驱动爪49分别在第一支承杆44和第二支承杆47的带动下，由工作位置摆动至非工作位置，使处理盒10不受成像设备驱动头7的阻挡，得以顺利取出。在处理盒10的脱机过程中，上述轴向调整组件同样可相对于齿轮2在驱动组件1的轴向上移动。
　　以上仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，而不脱离本发明权利要求的保护范围。例如，限位插销可以采用本领域技术人员容易想到的其它轴向限位结构来实现，轴向限位结构可以是与中心轴部件分离的独立构件，也可以是形成在中心轴部件上的一个部分。此外，上述的压缩弹簧还可以用其它的弹性部件来替代，例如可被压缩的弹性塑料件结构等；中心轴部件的杆部横截面形状以及齿轮隔板上的通孔的形状也不限于腰形，还可以是长方形、平形四边形等具有两条平形边的任何形状，只要能够使轴向调整组件仅能相对于齿轮沿轴向平动，而不能相对于齿轮沿径向平动和绕轴线转动即可。
 工业实用性
本发明的驱动组件、感光鼓和处理盒可以在工业上制造和使用。对于采用了本发明驱动组件的处理盒，在安装至成像设备的过程中，当成像设备驱动头作用于传动组件时，驱动爪在传动组件的带动下由与成像设备驱动头脱离的非工作位置摆动至与成像设备驱动头配合的工作位置，从而保证了驱动功能正常进行。取出处理盒时，成像设备驱动头脱离传动组件，复位部件通过传动组件作用于驱动爪，使驱动爪由所述工作位置摆动至非工作位置，使处理盒不受成像设备驱动头的阻挡，得以顺利取出。本发明能最大程度降低落机和取出处理盒时的死点位置区域，避免了旋转驱动力接收头与成像设备驱动头之间发生卡死的问题，从而能够安全可靠的驱动感光鼓工作。本发明的驱动组件装配简单、方便，结构性能稳定，采用了这种驱动组件构建的处理盒落机平稳、性能可靠、工作稳定顺畅。因此本发明具备工业实用性。

Claims (10)

  1. 驱动组件，可与成像设备驱动头配合以传递旋转驱动力，所述驱动组件包括：
    　　具有一固定端的齿轮；
    　　沿轴向穿过所述齿轮的中心轴部件，该中心轴部件与所述齿轮形成周向联动的配合；
    　　旋转驱动力接收头，可绕所述中心轴部件的轴线旋转并与该中心轴部件形成周向联动的配合；
    　　其特征在于：
    　　所述旋转驱动力接收头包括可与所述成像设备驱动头配合的壳体、传动组件、驱动爪和复位部件，所述传动组件连接于所述驱动爪，所述驱动爪具有与所述成像设备驱动头配合的工作位置和与所述成像设备驱动头脱离的非工作位置；
    　　当所述成像设备驱动头作用于所述传动组件时，所述驱动爪在所述传动组件的带动下由所述非工作位置摆动至所述工作位置；当所述成像设备驱动头脱离所述传动组件时，所述复位部件通过所述传动组件作用于所述驱动爪，使所述驱动爪由所述工作位置摆动至所述非工作位置。
  2. 根据权利要求1所述的驱动组件，其特征在于，所述传动组件包括可被所述成像设备驱动头推压的齿条、啮合于该齿条两侧的两个传动齿轮以及用于固定所述两个传动齿轮的两根支承杆，所述两根支承杆相互平行并且可转动地支承在一个支架体上；所述驱动爪有两个，其中第一驱动爪固定在第一支承杆的一侧端部，第二驱动爪固定在第二支承杆的另一侧端部。
  3. 根据权利要求2所述的驱动组件，其特征在于，所述壳体的轴向外端面形成有内凹的球形面，该球形面的周围形成有切入面。
  4. 根据权利要求3所述的驱动组件，其特征在于，所述支架体、支承杆和传动齿轮位于所述壳体的内部，所述齿条由所述壳体的内部从所述球形面向外伸出。
  5. 根据权利要求2所述的驱动组件，其特征在于，所述齿条可沿轴向相对移动地设置在一底座上，所述复位部件设置在该齿条与所述底座之间。
  6. 根据权利要求5所述的驱动组件，其特征在于，所述齿条通过一杆部与所述底座形成滑动配合，所述复位部件为套在所述杆部上的压缩弹簧。
  7. 根据权利要求5所述的驱动组件，其特征在于，所述旋转驱动力接收头与所述中心轴部件之间通过一个槽部件连接，所述槽部件具有在空间上相互垂直的上滑槽和下滑槽，所述底座与所述上滑槽形成相对滑动的配合，所述中心轴部件的头部与所述下滑槽形成相对滑动的配合。
  8. 根据权利要求2所述的旋转驱动力接收头，其特征在于，所述第一驱动爪上具有可与所述成像设备驱动头啮合的第一啮合槽，所述第二驱动爪上具有可与所述成像设备驱动头啮合的第二啮合槽。
  9. 感光鼓，包括：
    　　鼓主体及安装在所述鼓主体轴向一端的驱动组件；
    　　其特征在于：
    　　所述驱动组件为权利要求1至8任一项所述的驱动组件。
  10. 处理盒，包括：
    　　盒体；
    　　可旋转地安装在所述盒体内的感光鼓,所述感光鼓包括鼓主体及安装在所述鼓主体轴向一端的驱动组件；
    　　其特征在于：
    　　所述驱动组件为权利要求1至8任一项所述的驱动组件。
PCT/CN2012/075028 2011-05-06 2012-05-03 驱动组件、感光鼓和处理盒 WO2012152203A1 (zh)

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