TWI547774B - Drum drive assembly - Google Patents

Description

Drum drive assembly

The present invention relates to a photosensitive drum mounted on an electronic image forming apparatus such as a printer or a photocopier, and more particularly to a transmission assembly of a photosensitive drum.

The background matter described herein is used to outline the context of the present invention, and the inventor's work described in this background or embodiment should not be explicitly or metaphorically used as a prior art for the invention, and is not applicable as an application. Prior art.

One of the most important components in the photosensitive drum electronic imaging device is disposed in a toner cartridge, which is electrically conductive by photoreceptive action and simultaneously adsorbs carbon powder to display a document, and a photosensitive drum mainly comprises a photosensitive roller and a photosensitive drum. a transmission assembly disposed at one end of the photosensitive drum, the transmission assembly being coupled to a driving member disposed in a housing of the electronic imaging device to transmit rotational kinetic energy from the driving member to the photosensitive roller.

The transmission assembly of the conventional photosensitive drum includes a transmission member that can be engaged with the driving member, and is generally designed to be biased by the driving member to be biased (as disclosed in US Pat. No. 8,295,734), or The design of the transmission member can be axially moved by the driving member (as disclosed in the Chinese patent CN201532527U). Through these design methods, the transmission member can be placed when the user places the toner cartridge in the electronic imaging device. a card is attached to the driving member, and the user picks up the toner cartridge from the electronic device The image pickup device is separated from the driving member when taken out.

However, the above-described transmission assembly for a photosensitive drum and having a transmission member that can be yawed or axially moved is relatively complicated in construction and assembly because of its complicated construction.

Therefore, there are still defects and deficiencies in the prior art to be solved.

In view of the above circumstances, an object of the present invention is to provide a transmission assembly of a photosensitive drum which can be combined and separated from a driving member of an electronic imaging device in a manner different from the prior art, and has a simpler structure. Another object of the invention is to provide a transmission assembly of a photosensitive drum which can be firmly coupled with the driving member of the electronic image forming apparatus and smoothly separated.

In order to achieve the above object, the driving assembly of the photosensitive drum provided by the present invention is used for engaging with a driving member of an electronic imaging device, and the driving member has two protrusions.

In one aspect of the invention, the transmission assembly includes a transmission member including a shaft and a snap-fit structure; the shaft extends along an imaginary axis and has a first end facing a first direction, a second end facing a second direction opposite the first direction, and at least one bump extending radially along the shaft.

The snap-fit structure has a base extending from the first end of the shaft, a receiving slot formed in the base, and two L-shaped snap blocks, each of the L-shaped snap blocks having a bottom and a latching claw, the bottom portion having a first end portion and an opposite second end portion, the first end portion forming a hook portion, the latching claw being supported by the bottom portion The second end portion of the L-shaped engaging block is pivotally received on opposite sides of the receiving slot, so that each of the L-shaped engaging blocks can be located around the second slot. a pivot axis of the second end of the bottom portion, the pivot axis being perpendicular to the imaginary axis. In a normal state, the first end of the bottom portion faces the imaginary axis, and the latching claw extends spirally toward the first direction The two L-shaped card blocks have an accommodating space for accommodating the driving member.

In an embodiment, the shaft of the transmission member has a socket for a pin to penetrate, and the portion of the pin protruding from the socket is the protrusion.

In one embodiment, the base has two pairs of holes in communication with the receiving recess.

In an embodiment, each of the L-shaped snap blocks further has a rotation limiting end located at the second end of the bottom and facing the first end of the bottom.

In an embodiment, each of the L-shaped snap blocks also has a through hole at a second end of the bottom portion such that the perforation system corresponds to a position of the pivot axis.

In an embodiment, the latching claws of each of the L-shaped engaging blocks have a side opposite to the imaginary axis in a first direction, an inner side facing the receiving space, and an outer side and the inner side. a sloping top surface of a first boundary of the side, a hooking groove at a second boundary between the outer side surface and the inner side surface, and a top end between the inclined top surface and the hook card slot, wherein An angle between the extending direction of the inclined top surface and the imaginary axis is not equal to 90 degrees, and the two hooking slots of the two latching claws are substantially opposite to each other for the two protrusions of the driving component to pass through the hook card The opening of the slot extends into the hook slot. In an embodiment, the L-shaped snaps of the transmission member The hook slot of the block has a recess and a limiting surface between the recess and the top end, the limiting surface being substantially inclined from the top end toward the inclined top surface.

In one embodiment, the first end portion and the second end portion of the bottom portion of each of the L-shaped engaging blocks have a first width W1 and a second width W2, wherein the first width W1 is narrower than the first Two width W2.

In one embodiment, the accommodating notch has two openings symmetrically located on opposite sides of the base, and two grooves are recessed between the base and the shaft and respectively communicate with the two openings, wherein each of the two The trench has a width N1, each of the openings having a width N2, and the width N1 of each of the trenches is narrower than the width N2 of each of the openings. In one embodiment, the two trenches communicate to form a trench.

In an embodiment, when the two L-shaped snap blocks are received in the receiving slot, each of the L-shaped snap blocks is inserted into the through hole and each pair of holes of the base by a pin. The bases are pivoted together such that the second ends of the bottoms of the L-shaped snap blocks are received in the openings and the first ends of the bottoms of the L-shaped snap blocks are respectively disposed Groove.

In one embodiment, the hook portion of each of the L-shaped snap blocks is a T-shaped hook.

In addition, the snap-fit structure also has a retaining member that overlaps the hook portion at the bottom of each of the L-shaped snap blocks.

In an embodiment, the holding member is an elastic ring, a magnet or a spring, and the elastic ring can be made of an elastic material, which is a plastic or silicone rubber.

In an embodiment, the elastic ring has two earrings located in the elastic ring. The opposite side of the two.

In addition, the transmission assembly includes a sleeve, a gear member and an elastic member in addition to a transmission member.

The sleeve has a body, a shaft hole extending through the body along the imaginary axis, and at least one guide groove formed in the body and communicating with the shaft hole, the shaft of the transmission member being rotatable and axially movable The at least one protrusion of the shaft is movably received in the at least one guide groove, and the sleeve may further have two protrusions protruding from the body.

In one embodiment, at least one guiding groove of the sleeve is rectangular. In another embodiment, at least one guiding groove of the sleeve has a bottom edge substantially perpendicular to the imaginary axis, and the two sides are respectively The two ends of the bottom edge extend toward the first direction, and a top edge is connected between the two sides, wherein the top edge has an inclined portion and an extension portion parallel to the bottom edge.

Further, the gear member is for connecting a photosensitive drum, the gear member having a tube extending along the imaginary axis and accommodating the body of the sleeve, such that the sleeve is rotatable about the imaginary axis The gear members are combined.

In one embodiment, the gear member has a top portion, a gear portion and a bottom portion, the gear portion extending from the top portion along the imaginary axis toward the second direction, the bottom portion being oriented by the gear portion along the imaginary axis The second direction extends wherein the top of the gear member has at least one groove.

In addition, the elastic member is disposed in the shaft hole of the sleeve, and the two ends thereof abut against the bottom wall of one of the gear members and the second end of the shaft of the transmission member.

In another aspect of the invention, the transmission assembly of the photosensitive drum comprises a transmission member, which in one embodiment has a shaft and a snap-fit structure; the shaft extends along an imaginary axis and has an orientation a first end of a first direction, a second end facing a second direction opposite the first direction, and at least one protrusion extending radially along the shaft; the snap structure has a base a receiving slot, a two L-shaped snap block, and a retaining member, the base extending from the first end of the shaft, the receiving slot being formed at the base, each of the two L-shaped clips The block has a bottom portion and a latching claw, the bottom portion having a first end portion and an opposite second end portion, the first end portion forming a hook portion, the latching claw being connected to the second end portion of the bottom portion The two L-shaped snap blocks are pivotally received on opposite sides of the receiving slot, so that each of the L-shaped snap blocks can surround a bottom of the bottom a pivot axis of the two ends, the pivot axis being perpendicular to the imaginary axis, in the normal state, the first of the bottom The end portion is oriented toward the imaginary axis, and the engaging claws are spirally extended toward the first direction, wherein the two L-shaped engaging blocks have an accommodating space therebetween, and the holding member is associated with each of the L-shaped engaging blocks The hooks at the bottom are lapped together.

The transmission assembly can also have a sleeve, a gear member and an elastic member as described above.

In another aspect, the invention is directed to a transmission member. In one embodiment, the transmission member has a shaft that is rotatable about an imaginary axis and movable in the direction of the imaginary axis, and a snap-fit structure is coaxial with the shaft and has at least two snap blocks. The two latching blocks extend from an edge portion of the latching structure in a direction parallel to the imaginary axis, and the two latching blocks can face the imaginary axis or away from the The imaginary axis rotates.

In one embodiment, the snap-fit structure includes a base extending from the first end of the shaft, and at least two receiving slots formed at an edge portion of the base. Each of the latching blocks is pivotally disposed in each of the receiving slots, such that each of the latching blocks is rotatable about a pivot axis that is perpendicular to the imaginary axis. Thereby, the at least two card blocks have an accommodating space for accommodating the driving member.

In one embodiment, each of the latching blocks has a bottom portion, a latching claw extending vertically from the bottom portion, and a through hole at a boundary portion between the bottom portion and the latching claw, the punching system and the pivoting shaft The position corresponds.

In one embodiment, each of the snap blocks is pivotally coupled to the base by a pin inserted into the through hole.

The transmission member is used for a transmission assembly, which is coupled to a photosensitive drum, and the photosensitive drum is coupled with a main component of an electronic imaging device. The transmission assembly is an end member, and the main assembly includes a a motor-driven drive member having a rotational force applying portion having a cylindrical support member (ie, a sleeve) coaxially with the support member and supporting the drive member The component is connected to the driving member to be coupled with the driving member to obtain a rotational force from the rotational force applying portion of the driving member to rotate the photosensitive drum, and the rotating force is sequentially transmitted through the engaging structure. The shaft, as well as the support element, are transmitted.

Therefore, the transmission assembly of the photosensitive drum provided by the present invention is simpler in structure than the prior art, and the hooking groove of the snap-fit structure can be combined with the electronic imaging device. The two protrusions of the driving member are engaged, so that the transmission member is driven to rotate. In addition, when the user wants to combine and disengage the transmission component with the driving component of the electronic imaging device, the latching structure is pushed by the driving component of the electronic imaging device to move the transmission component along the axial direction of the sleeve. At the same time, the protrusion of the shaft is guided by the guide grooves of the sleeve to rotate the transmission member, so that the transmission member can be stabilized with the driving member of the electronic imaging device by simultaneous movement and rotation. Combine and smoothly separate.

The above and other aspects of the present invention will be described in detail in the following description of the embodiments of the invention.

100‧‧‧Transmission components

20‧‧‧ Transmission parts

200‧‧‧ Transmission components

30‧‧‧ sleeve

32‧‧‧Ontology

322‧‧‧Axis hole

324‧‧ ‧ guide slot

34‧‧‧Bump

40‧‧‧ latch

50‧‧‧Flexible parts

60‧‧‧ Gear parts

61‧‧‧ tube body

64‧‧‧ top wall

65‧‧‧ bottom wall

66‧‧‧ top

67‧‧‧ Gear Department

68‧‧‧ bottom

69‧‧‧ trench

70‧‧‧ shaft

71‧‧‧ first end

72‧‧‧ second end

73‧‧‧ jack

74‧‧‧ rod body

75‧‧‧Bumps

80‧‧‧Card structure

81‧‧‧ base

81a‧‧‧ base

81b‧‧‧ base

811‧‧‧ vacant slots

811a‧‧‧ openings

811b‧‧‧ trench

812‧‧‧ hole

818‧‧‧stops

82‧‧‧ card block

82A‧‧‧First card block

82B‧‧‧Second card block

820‧‧‧Card claws

821‧‧‧Top

822‧‧‧Sloping top surface

823‧‧‧Check card slot

823a‧‧‧ recess

823b‧‧‧ Limiting surface

824‧‧‧ inside side

825‧‧‧ outside side

826‧‧‧ hook

827‧‧‧Perforation

828‧‧‧ Limit

828’‧‧‧ Limit

829‧‧‧ bottom

829a‧‧‧ first end

829b‧‧‧second end

83‧‧‧ latch

86‧‧‧ accommodating space

89‧‧‧ holding parts (elastic ring)

89'‧‧‧ holding parts (elastic ring)

891‧‧ Earrings

90‧‧‧ Drives

92‧‧‧Bump

92A‧‧‧first stud

92B‧‧‧second stud

93‧‧‧Ontology

D1‧‧‧ first direction

D2‧‧‧ second direction

L‧‧‧ imaginary axis

N1‧‧‧Width

N2‧‧‧Width

W1‧‧‧ first width

W2‧‧‧ second width

The drawings are illustrative of one or more embodiments of the invention, and together with the written description. In the embodiments, the same reference numerals in the drawings refer to the same or similar elements.

The first drawing is an exploded perspective view of a photosensitive drum drive assembly according to an embodiment of the present invention; the second drawing is an exploded perspective view of a photosensitive drum drive assembly according to another embodiment of the present invention; and the third (A) and (B) A transmission assembly of a second embodiment of the present invention, a perspective view of a holder; a fourth diagram is a transmission assembly of an embodiment of the present invention, a perspective view (A) and a top view (B) of the transmission member; and a fifth diagram of the present invention The transmission component of the embodiment has an L-shaped snap of the transmission member Different perspective views of the block (A)-(D); Figure 6 is a schematic view of the assembly process of the transmission component of the embodiment of the present invention (A), (B), (C), (E), (F And (G); the seventh figure is a transmission assembly of another embodiment of the present invention, the transmission member is a perspective view (A), another perspective view (B), and a top view (C); the eighth figure is another Different perspective views (A)-(D) of the L-shaped snap block of the transmission member of the transmission assembly of an embodiment; ninth and tenth drawings are schematic diagrams of the assembly process of the transmission component of the transmission assembly of another embodiment of the present invention 9A-9C and 10A-10F; FIG. 11 is a top view (A), a cross-sectional view (B), and another cross-sectional view (C) of the photosensitive drum drive assembly of one embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view (A) and a perspective view (B) of a sleeve of a photosensitive drum drive assembly according to an embodiment of the present invention; and a thirteenth diagram of a photosensitive drum drive assembly according to an embodiment of the present invention, a gear member and a sleeve thereof A perspective view of a combination of gear members (A), a top view (B), a cross-sectional view (C), and another cross-sectional view (D); and a fourteenth embodiment of the photosensitive drum drive assembly of the present invention, the latch Fig. 15 is a perspective view of an elastic member of a photosensitive drum drive assembly according to an embodiment of the present invention; and Fig. 16 is a schematic view showing the assembly process of a photosensitive drum drive assembly according to an embodiment of the present invention (A)-(C) ; 17 to 19 are schematic views showing a process of connecting a photosensitive drum drive assembly and a driving member according to an embodiment of the present invention; and 20 to 23 are a photosensitive drum drive assembly and a driving member according to another embodiment of the present invention. A schematic diagram of another joining process; a twenty-fourth to twenty-sixth drawing is a schematic view showing a process of separating the photosensitive drum drive assembly and the driving member according to an embodiment of the present invention; and a twenty-seventh to twenty-ninthth embodiment is another embodiment of the present invention A schematic diagram of another separation process of the photosensitive drum drive assembly and the drive member.

The present invention will be described in more detail in the following description in conjunction with the accompanying drawings. Those skilled in the art will be able to fully understand the invention, and like reference numerals refer to like elements throughout the specification.

The names used in the present specification and the description of the invention generally have the ordinary meaning in the art, and the description of the present invention will be described below or in the description to further guide the present invention. For convenience, some names may be marked in italics and/or quotation marks. The use of marks and/or uppercase letters has no effect on the scope and meaning of the name, ie the name in this specification and the invention, whether or not Marked and/or uppercase letters have no effect on the scope of the name and the meaning. The same thing can be described in a variety of ways rather than just one. Therefore, any of the names discussed here can use alternative languages and synonyms, regardless of the name. Whether or not stated or discussed herein is not given any special meaning, some names have synonyms, and the enumeration of one or more synonyms does not mean that the use of other synonyms may be excluded. In this specification, the use of the embodiments and The discussion is for illustrative purposes only and is not intended to limit the scope and

When an element is referred to as being "on" another element, it can be interpreted as "directly on" or "in" or " When it is "on", it does not have the meaning in the component. As used in this specification, the name "and/or" includes one or more of any combination of names that are associated.

It should be understood that even though the first, second, third, etc., etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers, and/or Sections are not limited by the names, and are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section and, therefore, are discussed in the following description. A first element, component, region, layer or section may be referred to as a second element, component, region, layer or section without departing from the teachings of the invention.

It should be understood that when a relationship of one element to another element is referred to as "above", "attached" to, "connected" to, "coupled" to, "contact", etc. It is meant that the element can be "directly on", "attached" to, "connected" to, "coupled" to, "contacted" another element or intervening element. In contrast, when the relationship of one element to another element is described as "directly on," "directly attached", "directly connected", "directly connected", or "directly contact", There is no such intermediary An element, when a structure or feature is "adjacent" to another feature, is meant to mean that the two may overlap or underneath.

The singular forms "a", "an" and "the" are intended to include the plural, unless the context clearly dictates otherwise. It is understood that the words "including" and/or "comprising", "including" and/or "including", "having" and/or "having" are used in the specification to specify the recited features, regions, and overall. The existence, or addition, of one or more of the features, regions, integers, steps, operations, components, components, and/or groups may not be excluded in the presence of the steps, operations, components, and/or components.

In addition, other relative names such as "lower", "bottom", "above", "top" are used herein to describe the relationship of one element to another element in the drawings. It is understood that these related terms are also It can be used to indicate the position and orientation of elements not represented in the drawings. For example, when a component in a drawing is flipped, the description of the component will change from "below" to "above" other components. The name "below" can mean both the lower and upper meanings according to the definition of the schema. Similarly, when the components in a diagram are flipped, the description of the component will be "below" other components or in other components. The following "becomes "above" other components. The names of the previous examples "below" or "below" can simultaneously represent the meaning above and below.

All names (including technical and scientific names) used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art, and even some commonly used dictionary-defined names should be in the related art and the present invention. Contain The meanings are consistent, and unless explicitly stated in the specification, these names should not be interpreted as too ideal or too formal.

"About", "about", "substantially" or "probably" generally means within 20% of a given value or range, preferably within 10% or even within 5%. The numerical value provided by the present invention is The summary value, if not specifically stated, means "left and right", "about", "substantially" or "probably".

The words "including", "including", "having", "having", "including" or "including" are used in the context of an open term, meaning including but not limited to.

In this document, "at least one of A, B, and C" should be interpreted as a logic (A or B or C) because "or" is a non-exclusive logic without changing the principles of the invention. One or more steps or licenses in a method are implemented in a different order or simultaneously.

The embodiments of the present invention will be described in conjunction with the drawings, and in accordance with the purpose of the present invention, as in the embodiments and broadly described herein, the present invention relates to a photosensitive drum mounted on an electronic imaging device such as a printer or a photocopier. Related to the drive assembly.

Referring to the first figure, a transmission assembly 100 for a photosensitive drum according to a first embodiment of the present invention includes a transmission member 20, a sleeve 30, an elastic member 50, and a gear member 60. The second figure is a transmission assembly 200 of the photosensitive drum provided by another embodiment, which is substantially the same as the transmission assembly 100 shown in the first figure, but the elastic holding member 89 of the transmission assembly 100 and the elastic holding member of the transmission assembly 200 89' is different.

As shown in the first, second and fourth to tenth drawings, the transmission member 20 has a shaft 70 and a snapping structure 80; the shaft 70 has a cylindrical rod body 74 and at least one protrusion 75 extending radially along the cylindrical rod body 74. The cylindrical rod body 74 is along a An imaginary axis L extending the elongated member and having a first end 71 facing a first direction D1, a second end 72 facing a second direction D2 opposite the first direction D1, and a radial through The insertion hole 73 of the cylindrical rod body 74 is inserted into the insertion hole 73 during assembly. The portion of the insertion pin 40 protruding from the insertion hole 73 is the protrusion 75. .

The latching structure 80 has a base portion 81 integrally extending from the first end 71 of the shaft 70, and a receiving slot 811 formed on the base portion 81. The base portion 81 has two pairs of holes 812 and the receiving slot 811 connected.

As shown in the fourth and seventh figures, the receiving recess 811 has two openings 811a symmetrically located on opposite sides of the base 81, and two grooves 811b are recessed in the base 81 and the first end of the shaft 70. 71 and between the two openings 811a, as shown in the seventh figure, each of the grooves 811b has a width N1, each of the openings 811a has a width N2, and the width N1 of each of the grooves 811b is narrower than The opening 811a has a width N2. In an embodiment, as shown in FIG. 7 , the accommodating notch 811 has a plurality of stopping portions 818 to prevent the L-shaped engaging block 82 from excessively rotating toward the imaginary axis L. Further, the two grooves 811b can be A groove is formed in communication, and in this case, the base 81 is divided into two portions 81a and 81b as shown in the fourth figure.

The latching structure 80 also includes two L-shaped snap blocks 82. Each of the L-shaped latching blocks 82 has a bottom 829 and a latching claw 820. The bottom 829 has a first end portion 829a and an opposite second end portion 829b. The first end portion 829a defines a hook portion 826 extending perpendicularly from the second end portion 829b of the bottom portion 829. The two L-shaped snap blocks 82 are pivotally received on opposite sides of the receiving slot 811, such that each of the L-shaped latching blocks 82 can surround a second end portion 829b of the bottom portion 829. The pivoting shaft is rotated perpendicular to the imaginary axis L. In a normal state, the first end portion 829a of the bottom portion 829 is oriented toward the imaginary axis L and the engaging claw 820 is spirally extended toward the first direction D1. An accommodating space 86 is disposed between the two L-shaped latching blocks 82 for receiving the driving member 90.

As shown in the fifth and eighth figures, each of the L-shaped engaging blocks 82 has a side 825 that gradually approaches the imaginary axis L in the first direction D1, and an inner side 824 that faces the accommodating space 86. a sloping top surface 822 at an interface between the outer side 825 and the inner side 824, a hooking slot 823 at another interface of the outer side 825 and the inner side 824, and a sloping top surface 822 The top end 821 between the hooking slots 823, the extending direction of the inclined top surface 822 is about 30 to 80 degrees from the imaginary axis L, and the hooking slots 823 of the two L-shaped engaging blocks 82 are substantially opposite to each other. The direction of the two protrusions 92 of the driving member 90 extends into the hook slot 823 through the opening of the hooking slot 823. Each of the hook slots 823 has an arcuate recess 823a and a limiting surface 823b between the recess 823a and the top end 821. The limiting surface 823b is substantially inclined from the top end 821 toward the inclined top surface 822. The opening of the hooking slot 823 of the two latching blocks 82 is substantially opposite to each other.

As shown in the fifth and eighth figures, the first end portion 829a and the second end portion 829b of the bottom portion 829 of each of the L-shaped engaging blocks 82 have a first width W1 and a second width W2, respectively. The W1 is narrower than the second width W2.

In other embodiments, the hook portion 826 of each of the L-shaped engaging blocks 82 is a T-shaped hook. Further, each of the L-shaped engaging blocks 82 also has a through hole 827 at the second end portion 829b of the bottom portion 829. As shown in Fig. 5, the perforation 827 corresponds to the position of the pivot shaft.

In addition, each of the L-shaped engaging blocks 82 has a rotation limiting end 828 located at the second end 829b of the bottom portion 829 and facing the first end portion 829a of the bottom portion 829. In an embodiment, as shown in FIG. The rotation limiting end 828 extends from one side of the second end 829b of the bottom portion 829 to the other side, and the rotation limiting end 828 has a width equal to the second end portion 829b of the bottom portion 829. W2, however, in another embodiment, as shown in the eighth figure, the rotation limiting end 828' extends from the middle of the second end portion 829b of the bottom portion 829, and the rotation limiting end 828 'There is a width W1 that is substantially the same as the first end 829a of the bottom portion 829 and narrower than the width W2 of the second end portion 829b of the bottom portion 829.

In addition, the latching structure 80 also includes a retaining member 89 that is overlapped with the hook portion 826 of the bottom portion 829 of each of the L-shaped latching blocks 82. The retaining member 89 can be an elastic ring, a magnet or a spring. For example, as shown in FIG. 3A, the holding member is an elastic ring 89, and the elastic ring 89 can be made of an elastic material such as plastic or silicone. In this embodiment, the two L-shaped card The hook portion 826 of the bottom 829 of the block 82 is overlapped with the elastic ring 89. In another implementation For example, as shown in FIG. 3B, the elastic ring 89' has two earrings 891 on opposite sides of the elastic ring 89', whereby the hook portion 826 of the bottom 829 of the two L-shaped snap blocks 82 is It is overlapped with the two earrings 891 of the elastic ring 89'. In addition, a spring may be used to connect the hook portion 826 of the bottom 829 of the two L-shaped snap blocks 82. In addition, the magnetic force may also be used to maintain the two L-shaped snap blocks 82 in a normal state. .

According to the present invention, the assembly process of the transmission member 20 is relatively simple. As shown in the sixth, ninth, and tenth views, the two L-shaped snap blocks 82 are received in the receiving slot 811 and are provided by the two pins 83. The L-shaped latching block 82 is respectively received in the corresponding opening 811a and the groove 811b, and the two latches 83 are respectively inserted into the L-shaped engaging blocks. The perforations 827 of the 82 and the pairs of holes 812 of the base 81 are used to pivotally connect the L-shaped snap blocks 82 to the base 81. Then, the retaining member 89 (elastic ring) overlaps the two Ls. The hook portion 826 of the shaped card block 82 is as shown in the sixth figure. In addition, as shown in the ninth and tenth views, first, the shaft 70 is inserted into the elastic ring 89' such that the two earrings 891 are located in the two grooves 811b, and then the L-shaped engaging blocks 82 are respectively placed. Corresponding opening 811a and groove 811b, the hook portion 826 of the two L-shaped engaging block 82 is inserted into the two earrings 891 of the elastic ring 89', and the two pins 83 are respectively inserted into the L-shaped engaging blocks. The perforations 827 of the 82 and the corresponding holes 812 of the base 81 enable the L-shaped snap blocks 82 to be pivotally coupled to the base 81.

Thereby, the second end portion 829b of the bottom portion 829 of each of the L-shaped engaging blocks 82 is received in each of the openings 811a, and the bottom 829 of each of the L-shaped engaging blocks 82 is 829. The first end portion 829a is received in each of the grooves 811b, and each of the L-shaped engaging blocks 82 is rotatable about a pivot axis thereof, that is, each of the L-shaped engaging blocks 82 can be rotated around the position and the pivot axis. The corresponding latch 83 rotates. The L-shaped engaging blocks 82 are respectively spirally extended from opposite sides of the base portion 81 such that the positions of the L-shaped engaging blocks 82 are located above and below the base portion 81, as shown in the first and second figures. The L-shaped engaging block 82 faces the first direction D1 and away from the imaginary axis L, and the elastic ring 89 (or 89') acts on the hook portion 826 of the two L-shaped engaging blocks 82 to cause tension. The L-shaped snap blocks 82 can be maintained in a normal state.

In addition, the transmission assembly 10 having the transmission member 20 further includes a sleeve 30, a gear member 60 and an elastic member 50.

Please refer to the first, second, eleventh and twelfth drawings, in particular, the eleventh and twelfth drawings. The sleeve 30 has a body 32, a shaft hole 322 extending through the body 32 along the imaginary axis L, and two The body 32 communicates with the guide groove 324 of the shaft hole 322, and the two protrusions 34 are protruded from the body 32. Only one guide groove 324 is shown in the drawing, and the other guide groove is located in the guide groove 324 in the drawing. Relative position.

As shown in FIG. 11 , each of the guiding grooves 324 has a rectangular shape and has a bottom edge substantially perpendicular to the imaginary axis L, and two side edges respectively extend from the two ends of the bottom edge toward the first direction D1, and a top edge is coupled between the two sides and parallel to the bottom edge. As shown in FIG. 12, the top edge has an inclined portion and an extension portion parallel to the bottom edge. It should be understood that Other types of sleeves can also be used to practice the invention, as will be appreciated by those skilled in the art.

According to the present invention, the shaft 70 of the transmission member 20 can be rotated after assembly. The shaft 73 of the transmission member 20 is inserted into the shaft 40, and the shaft 70 of the transmission member 20 has two protrusions 75 along the shaft 70. Radially extending, as shown in the second figure, the two protrusions 75 are protruded from the two positions of the insertion hole 73, and are movably received in the guide grooves 324, respectively.

It can be appreciated by those skilled in the art that the insertion hole 73 of the transmission member 20 may not penetrate the shaft 70. For example, the shaft 70 of the transmission member 20 may have only one protrusion 75 and the sleeve. 30, it is only necessary to have a guide groove 324. In addition, the projection 75 of the shaft 70 is not limited by the insertion of the pin 40 into the insertion hole 73. For example, the protrusion 75 can be integrally formed by the cylinder. The rod body 74 protrudes. In this case, the guide groove 324 should have an open end for the protrusion 75 to enter the guide groove 324, and an annular cover is used to close the open end of the guide groove 324. The cover may be provided on, but not limited to, the shaft 70.

Referring to the first, second and thirteenth drawings, the gear member 60 is for connecting the photosensitive drum and has a top portion 66. A gear portion 67 extends from the top portion 66 along the imaginary axis L toward the second direction D2. 68, the gear portion 67 extends along the imaginary axis L toward the second direction D2, a top wall 64 is located on one side of the top portion 66, and a bottom wall 65 is located on one side of the bottom portion 68. Further, the gear member 60 The top portion 66 can have at least one groove 69. The peripheral structure of the gear member 60 is similar to that of the conventional one. The inner portion of the gear member 60 has a tubular body 61 extending along the imaginary axis L for the body of the sleeve 30. 32 is received such that the sleeve 30 is coupled to the gear member 60 in a manner that is not rotatable about the imaginary axis L. In other embodiments, The sleeve 30 is formed in the gear member 60.

In other embodiments, the gear member 60 has a mounting groove formed on the top wall 64 and two limiting slots that communicate with each other. The tube body 61 extends along the imaginary axis L and is open to the top wall 64. The slot extends from the tube body 61 in opposite radial directions and opens to the top wall 64. The two limiting slots are adjacent to the mounting slot and extend parallel to the imaginary axis L. The second limiting slot is not open to the top wall 64. The sleeve 30 further has two protrusions 34 protruding from the body 32. When assembled, the two protrusions 34 of the sleeve 30 are inserted into the tube body 61 through the mounting groove, and then the sleeve 30 can be The rotation causes the two studs 34 to enter the limit slot, and the sleeve 30 is limited to the gear member 60. The details of the embodiments are disclosed in the TW102124445 and TW103123533 applications, which are not described herein.

The assembly of the transmission assembly of the present invention is relatively simple. As shown in FIG. 16A, first, the elastic member 50 is placed in the shaft hole 322 of the sleeve 30, and the shaft hole 322 of the sleeve 30 is connected to the shaft hole 322. The tube body 61 of the gear member 60, and secondly, the shaft 70 of the transmission member 20 is inserted into the shaft hole 322 of the sleeve 30, as shown in Fig. 16B, and then the pin 40 is passed through the gear member 60. The groove 69 and the guide groove 324 of the sleeve 30 penetrate into the insertion hole 73 of the shaft 70 of the transmission member 20, as shown in FIG. 16C, so that the two ends of the pin 40 (ie, The two protrusions 75 are movably received in the two guide grooves 324, and the two ends of the elastic member 50 abut against the bottom wall 65 of the gear member 60 and the shaft 70 of the transmission member 20, respectively. The second end 72, the elastic force generated by the elastic member 50 acts on the second end 72 of the shaft 70 of the transmission member 20 along the imaginary axis L, so that the transmission assembly 100 is in a normal state. In the state, the pin 40 of the shaft 70 (that is, the two protrusions 75) abuts against the top or top end of the two guide grooves 324 of the sleeve 30.

When the transmission assembly 100 is used, the gear member 60 is fixed to a photosensitive drum (not shown) for being disposed in the toner cartridge, and the engaging structure 80 of the transmission member 20 is extended from one end of the toner cartridge. When the user puts the toner cartridge into a casing (not shown) of an electronic imaging device, the snap-fit structure 80 of the transmission member 20 is engaged with a driving member 90 in the casing of the electronic imaging device. (As shown in the seventeenth to twenty-third figures), a part of the driving member 90 is received in the accommodating space 86, and the two hooking slots 823 are respectively provided for the driving member 90. The protrusion 92 protrudes into and is engaged, and the photosensitive drum can be driven to rotate by the driving member 90.

The seventeenth to nineteenth drawings show the process of connecting the transmission assembly 200 of the photosensitive drum to a driving member 90 according to a preferred embodiment of the present invention.

First, the position of the transmission assembly 200 is such that the driving member 90 is located between the two L-shaped engaging blocks 82, and the transmission assembly 200 is moved toward the driving member 90, as shown in FIG. When the base 81 of the 80 contacts the driving member 90, the pin 40 of the shaft 70 abuts against the top edge of the two guiding grooves 324 of the sleeve 30 and is at an intermediate position, and the driving member 200 continuously moves to drive the driving member 90 is pushed into the transmission member 20 in the second direction D2, so that the pin 40 of the shaft 70 moves in the guiding groove 324 toward the second direction D2, as shown in FIG. 18, at this time, the elastic member 50 The bottom wall 65 of the gear member 60 is compressed, and the driving member 90 is slid into the accommodating space 86 between the two L-shaped engaging blocks 82. When the driving member 90 is located in the receiving member 20, When the space 86 is used, the elastic member 50 generates The compression spring force will be pushed against the shaft 70, so that the pin 40 of the shaft 70 is again abutted against the top edge of the two guiding grooves 324 of the sleeve 30 and located at an intermediate position, and the two hooking slots 823 are respectively engaged with The two posts 92 of the driving member 90 are as shown in FIG. Since the latching blocks 82 are designed in an L shape, when the two protrusions 92 of the driving member 90 are engaged with the two hooking slots 823, the bottom 829 of the L-shaped engaging blocks 82 is just above The body 93 of the driving member 90, as shown in FIG. 19C, rotates the transmission assembly 200 to drive the driving member 90, and the L-shaped engaging blocks 82 do not swing outward. Moreover, the pulling force of the elastic ring 89' acting on the hook portion 826 of the two L-shaped snap blocks 82 keeps the L-shaped snap blocks 82 in a normal state during operation.

20 to 23 are views showing another process of connecting the photosensitive drum drive assembly 200 of the preferred embodiment of the present invention to the drive member 90. To facilitate a clearer description of the connection process, the two L-shapes are shown. The snap block 82 is represented by an L-shaped snap block 82A and an L-shaped snap block 82B.

The L-shaped engaging blocks 82B and 82A of the transmission assembly 200 are substantially in line with the driving member 90 and move toward the driving member 90, as shown in FIG. 20, when the first L-shaped engaging block is When the outer side 825 of the 82A touches the driving member 90, the pin 40 of the shaft 70 (ie, the two protrusions 75) abuts against the top edge of the guiding groove 324 of the sleeve 30 and is at an intermediate position, and continues to move. The transmission assembly 200 pushes the driving member 90 against the L-shaped engaging block 82A of the transmission member 20, and the L-shaped engaging block 82A rotates inwardly about the pivot shaft, that is, the latch 83, in other words, when the L The bottom portion 829 of the shaped snap block 82A rotates outwardly away from the imaginary axis L, and the latching claw 820 of the L-shaped snap block 82A rotates inwardly toward the imaginary axis L, such as Figure 21 and Figure 22 are shown in Figure 21. When the L-shaped engaging block 82A is rotated to a limit angle so that the L-shaped engaging block 82A cannot continue to rotate, the driving member 90 further pushes against the L-shaped engaging block 82A to face the transmitting member 20 toward the second direction. When the D2 moves, the pin 40 of the shaft 70 moves in the guiding groove 324 toward the second direction D2, as shown in FIG. 21B, at which time the elastic member 50 faces the bottom wall 65 of the gear member 60. Compressed. The extreme angle, for example, depends on the stop 818 of the base 81, as shown in the seventh figure, and/or the rotational limit end 828 or 828', as shown in Figures 5 and 8.

When the transmission member 20 is moved to the proper position in the second direction D2, the driving member 90 slides into the accommodating space 86 of the transmission member 20 between the two L-shaped engaging blocks 82, such as the twentieth As shown in FIG. 3A, when the driving member 90 is located in the accommodating space 86 of the transmission member 20, the compressive elastic force generated by the elastic member 50 will be pushed against the shaft 70, so that the pin 40 of the shaft 70 is again abutted. The top edge of the two guiding slots 324 of the sleeve 30 is located at an intermediate position. As shown in FIG. 23B, the tension of the elastic ring 89' acting on the hook portion 826 of the two L-shaped engaging blocks 82 is also The L-shaped snap blocks 82 are maintained in a normal state during operation.

When the two protrusions 92 of the driving member 90 are engaged with the two hook slots 823, the bottom 829 of the L-shaped engaging blocks 82 abuts against the body 93 of the driving member 90, as shown in FIG. As shown, when the drive assembly 200 is rotated to drive the drive member 90, the L-shaped snap blocks 82 do not swing outward.

The twenty-fourth to twenty-sixth drawings show that the driving member 90 is moved away from the position shown in the twenty-fourth figure toward the right to be separated from the photosensitive drum drive unit 200. The two L-shaped latching blocks 82 are represented by a first latching block 82A and a second latching block 82B, and the two studs 92 of the driving member 90 are also The first stud 92A and the second stud 92B indicate that the separation mode also corresponds to the transmission assembly 200 moving to the left from the position shown in the twenty-fourth figure. First, the second protruding post 92 of the driving member 90 is directly detached from the second engaging block 82B, and the first protruding post 92A and the body 93 of the driving member 90 are pushed against the first engaging block 82A, so that the The first latching block 82A is rotated outwardly, as shown in FIG. 25A. At the same time, the transmission member 20 is pushed toward the second direction D2, and when the driving member 90 continues to move to the right, or When the transmission assembly 200 is continuously moved to the left, the first engaging block 82A can be rotated outward, as shown in FIG. 25B. At this time, since the first engaging block 82A is still abutted The main body 93 of the driving member 90, and the transmission assembly 200 is continuously moved to the left, the transmission member 20 and the sleeve 30 can overcome the repulsive force generated by the elastic member 50, and the first protrusion 92A passes the first The top end 821 of the snap block 82A is detached from the first snap block 82A, as shown in FIG. 26, so that the transmission assembly 200 can be separated from the drive member 90. In addition, the tension of the elastic ring 89 (or 89') acting on the hook portion 826 of the two L-shaped snap blocks 82 restores the L-shaped snap blocks 82 to the normal state.

The twenty-seventh to twenty-ninth drawings show a process in which the driving member 90 is moved upward from the position shown in the twenty-seventh figure to be separated from the photosensitive drum drive unit 200, in order to explain the separation process more clearly, The two L-shaped latching blocks 82 are represented by a first latching block 82A and a second latching block 82B. The two studs 92 of the driving member 90 are also represented by a first stud 92A and a second stud 92B. Separation The mode is also equivalent to the transmission assembly 200 moving downward from the position shown in the twenty-seventh figure. First, the second latching block 82B is directly detached from the second stud 92, and the first latching block 82A and the first stud 92A are pushed against each other to rotate the first latching block 82A outward. As shown in FIG. 28B, at the same time, the transmission member 20 is pushed against the second direction D2, and when the driving member 90 continuously moves upward, or the transmission assembly 200 continuously moves downward, The first latching block 82A is further rotated outwardly. As shown in FIG. 18B, the driving member 90 is separated from the first latching block 82A, as shown in FIG. The drive assembly 200 is separated from the drive member 90. Similarly, after the transmission assembly 200 is separated from the driving member 90, the tension of the elastic ring 89 (or 89') acting on the hook portion 826 of the two L-shaped engaging blocks 82 can cause the L-shaped engaging blocks 82. Return to the normal state.

In the present invention, the photosensitive drum drive assembly 200 is simpler in construction than the conventional one. The transmission assembly 200 is combined with the drive member 90 of the electronic imaging device in a manner different from the prior art, since the transmission member 20 can be along The imaginary axis L moves while rotating about the imaginary axis L, and the snap block 82 of the transmission member 20 has a specially designed shape, so that the drive assembly 200 enters or exits the housing of the electronic imaging device at any angle. The transmission member 20 can be firmly coupled with the driving member 90 and smoothly separated.

The process of combining and disengaging the transmission assembly 200 with the driving member 90 is only one of many conditions. For example, when the transmission assembly 200 is ready to be in contact with the driving member 90, the driving member 90 may first touch. Touching the inner side 824 or the outer side 825 of one of the L-shaped snap blocks 82, as explained above, However, the transmission assembly provided by the present invention may also have two or more L-shaped engaging blocks 82. In addition, the shape of the hooking slot 823 of each of the L-shaped engaging blocks 82 is not limited by the foregoing embodiments, as long as the hook The card slot 823 can be engaged with the two protrusions 92 of the driving member 90, and the two protrusions 92 can be hooked by a portion of the hooking slot 823 (such as the limiting surface 823b in the embodiment). When the transmission member 20 is driven to rotate, it is not possible to move in the second direction D2.

In addition, the manner in which the sleeve 30 and the elastic member 50 are disposed on the gear member 60 is not limited to those provided by the foregoing embodiments, for example, the two protrusions 34 of the sleeve 30 and the two limiting slots of the gear member 60. The bottom wall 65 of the gear member 60 is detachably mounted to the bottom portion 68 so that the transmission member 20 and the sleeve 30 can be coupled to each other. The elastic member 50 can be installed in the gear member 60 from the bottom of the gear member 60. In this case, the gear member 60 does not have the mounting groove. The sleeve 30 and the elastic member 50 are disposed on the gear member 60. The manner of the gear member 60 can also be provided as in the following embodiments.

The foregoing embodiments of the present invention are intended to be illustrative and not restrictive

The embodiment of the present invention has been described and described in order to explain the principles of the present invention and the application of the embodiments of the present invention. The rest of the embodiments can be easily conceived by those skilled in the art, and therefore, the scope of the present invention will be defined by the scope of the patent application rather than the foregoing description. The description of the various embodiments is defined.

20‧‧‧ Transmission parts

200‧‧‧ Transmission components

30‧‧‧ sleeve

32‧‧‧Ontology

322‧‧‧Axis hole

324‧‧ ‧ guide slot

40‧‧‧ latch

50‧‧‧Flexible parts

60‧‧‧ Gear parts

66‧‧‧ top

67‧‧‧ Gear Department

68‧‧‧ bottom

69‧‧‧ trench

70‧‧‧ shaft

71‧‧‧ first end

72‧‧‧ second end

73‧‧‧ jack

74‧‧‧ rod body

80‧‧‧Card structure

81‧‧‧ base

811‧‧‧ vacant slots

82‧‧‧ card block

83‧‧‧ latch

86‧‧‧ accommodating space

89'‧‧‧ holding parts (elastic ring)

D1‧‧‧ first direction

D2‧‧‧ second direction

L‧‧‧ imaginary axis

Claims (23)

A transmission assembly (100) for a photosensitive drum for engaging with a driving member (90) of an electronic imaging device, the driving member (90) having two protrusions (92), the transmission assembly (100) comprising: a transmission member (20) having a shaft (70) and a snapping structure (80); the shaft (70) extending along an imaginary axis (L) and having a first direction (D1) An end (71), a second end (72) facing a second direction (D2) opposite to the first direction (D1), and at least one protrusion extending radially along the shaft (70) Block (75); the snap-fit structure (80) has a base portion (81), a receiving slot (811), a double L-shaped snap block (82), and a retaining member (89), the base portion (81) Extending from the first end (71) of the shaft (70), the receiving slot (811) is formed on the base (81), and each of the two L-shaped snap blocks (82) has a bottom (829) And a card connector (820) having a first end portion (829a) and an opposite second end portion (829b), the first end portion (829a) forming a hook portion (826) The card connecting claw (820) is vertically extended from the second end portion (829b) of the bottom portion (829), wherein the two L-shaped engaging blocks (82) are divided into points The two opposite sides of the receiving slot (811) are pivotally received, such that each of the L-shaped latching blocks (82) can surround a second end portion (829b) of the bottom portion (829). The pivot shaft rotates perpendicular to the imaginary axis (L). In the normal state, the first end portion (829a) of the bottom portion (829) faces the imaginary axis (L) and the snap claw (820) A spiral extending toward the first direction (D1), wherein the two L-shaped snap blocks (82) have an accommodating space (86) for accommodating the driving member (90), the holding member (89) Attached to the hook portion (826) of the bottom (829) of each of the L-shaped snap blocks (82); a sleeve (30) having a body (32), a shaft hole (322) extending through the body (32) along the imaginary axis (L), and at least one formed on the body (32) and communicating with the shaft hole (322) a guide groove (324), the shaft (70) of the transmission member (20) is rotatably and axially movably disposed in the shaft hole (322), at least one of the shaft (70) a bump (75) is movably received in the at least one guiding groove (324); a gear member (60) for connecting the photosensitive drum has a portion extending along the imaginary axis (L) for receiving the a tube body (61) of the body (32) of the sleeve (30), the sleeve (30) being coupled to the gear member (60) in such a manner that it cannot rotate about the imaginary axis (L); An elastic member (50) disposed in the shaft hole (322) of the sleeve (30) has two ends abutting against a bottom wall (65) of the gear member (60) and the transmission member (20) The second end (72) of the shaft (70). The transmission assembly (100) of the photosensitive drum of claim 1, wherein the engaging claws (820) of each of the L-shaped engaging blocks (82) have a gradual approach to the imaginary axis in a first direction (D1) (L) an outer side (825), an inner side (824) facing the receiving space (86), and a sloping top at a first boundary of the outer side (825) and the inner side (824) a surface (822), a hooking groove (823) at a second boundary of the outer side surface (825) and the inner side surface (824), and a slanted top surface (822) and the hook card slot (822) 823) a top end (821), wherein an angle between the extending direction of the inclined top surface (822) and the imaginary axis (L) is not equal to 90 degrees, and the two hooking claws (820) are two hook slots ( 823) the openings are substantially opposite each other for the purpose of The two protrusions (92) of the driving member (90) extend into the hooking slot (823) through the opening of the hooking slot (823). The transmission assembly (100) of the photosensitive drum of claim 2, wherein the hooking groove (823) of each L-shaped engaging block (82) of the transmission member (20) has a recess (823a) and a A limiting surface (823b) between the recess (823a) and the top end (821), the limiting surface (823b) is substantially inclined from the top end (821) toward the inclined top surface (822). The transmission assembly (100) of the photosensitive drum of claim 1, wherein each of the L-shaped engaging blocks (82) further has a rotation limiting end (828) at a second end of the bottom (829). The portion (829b) faces the first end (829a) of the bottom portion (829). The transmission assembly (100) of the photosensitive drum of claim 1, wherein the first end portion (829a) and the second end portion (829b) of the bottom portion (829) of each of the L-shaped snap blocks (82) Each has a first width W1 and a second width W2, wherein the first width W1 is narrower than the second width W2. The transmission assembly (100) of the photosensitive drum of claim 5, wherein the receiving notch (811) has two openings (811a) symmetrically located on opposite sides of the base (81), and two grooves (811b) is recessed between the base (81) and the shaft (70) and communicates with the two openings (811a), wherein each of the grooves (811b) has a width N1, and each of the openings (811a) Having a width N2, the width N1 of each of the grooves (811b) is narrower than the width N2 of each of the openings (811a). The transmission assembly (100) of the photosensitive drum of claim 6, wherein the two grooves (811b) communicate to form a groove. The transmission assembly (100) of the photosensitive drum of claim 6, wherein when the two L-shaped snap blocks (82) are received in the receiving slot (811), each of the L-shaped snap blocks The second end portion (829b) of the bottom portion (829) of the (82) is received at each of the openings (811a) and the first end portion (829a) of the bottom portion (829) of each of the L-shaped snap blocks (82) The system is placed in each of the grooves (811b). The transmission assembly (100) of the photosensitive drum of claim 1, wherein each of the L-shaped engaging blocks (82) further has a through hole (827) at a second end (829b) of the bottom portion (829). The perforation (827) is associated with the position of the pivot axis. The transmission assembly (100) of the photosensitive drum of claim 9, wherein the base (81) has two pairs of holes (812) communicating with the receiving recess (811). The transmission assembly (100) of the photosensitive drum according to claim 10, wherein when the two L-shaped engaging blocks (82) are received in the receiving slot (811), each of the L-shaped engaging blocks (82) is pivotally coupled to the base (81) by a pin (83) inserted into the perforation (827) and each pair of holes (812) of the base (81). The transmission assembly (100) of the photosensitive drum of claim 1, wherein the hook portion (826) of each of the L-shaped engaging blocks (82) is a T-shaped hook. The transmission assembly (100) of the photosensitive drum of claim 1, wherein the holding member (89) is an elastic ring, a magnet or a spring. The transmission assembly (100) of the photosensitive drum of claim 13, wherein the elastic ring is made of an elastic material, which is plastic or silicone. The transmission assembly (100) of the photosensitive drum of claim 13, wherein the elastic ring has two earrings (891) on opposite sides of the elastic ring. The transmission assembly (100) of the photosensitive drum of claim 1, wherein at least one of the guide grooves (324) has a rectangular shape. The transmission assembly (100) of the photosensitive drum of claim 16, wherein at least one of the guide grooves (324) has a bottom edge substantially perpendicular to the imaginary axis (L), two sides The sides extend from the two ends of the bottom edge toward the first direction (D1), and a top edge is connected between the two sides, wherein the top edge has an inclined portion and an extension portion parallel to the bottom edge . The transmission assembly (100) of the photosensitive drum of claim 1, wherein the sleeve (30) further has two protrusions (34) protruding from the body (32). The transmission assembly (100) of the photosensitive drum of claim 1, wherein the shaft (70) of the transmission member (20) has a socket (73) for a pin (40) to penetrate; the pin ( 40) The portion protruding from the insertion hole (73) is the projection (75). The transmission assembly (100) of the photosensitive drum of claim 1, wherein the gear member (60) has a top portion (66), a gear portion (67), and a bottom portion (68), the gear portion (67) ) extending from the top (66) along the imaginary axis (L) toward the second direction (D2), the bottom portion (68) being oriented by the gear portion (67) along the imaginary axis (L) toward the second direction (D2) Extension. The transmission assembly (100) of the photosensitive drum of claim 20, wherein the top (66) of the gear member (60) has at least one groove (69). A transmission assembly (100) for a photosensitive drum includes a transmission member (20), wherein the transmission member (20) has a shaft (70) and a snap structure (80); the shaft (70) is along an imaginary axis (L) extending and having a first orientation toward a first direction (D1) An end (71), a second end (72) facing a second direction (D2) opposite the first direction (D1), and at least one bump extending radially along the shaft (70) (75); the snap-fit structure (80) has a base (81), a receiving slot (811), a two-L snap block (82), and a retaining member (89), the base (81) Extending from the first end (71) of the shaft (70), the receiving slot (811) is formed on the base (81), and each of the two L-shaped snap blocks (82) has a bottom (829) And a card connector (820) having a first end portion (829a) and an opposite second end portion (829b), the first end portion (829a) forming a hook portion (826) The card claw (820) is vertically extended from the second end portion (829b) of the bottom portion (829), wherein the two L-shaped snap blocks (82) are pivotally accommodated respectively The two opposite sides of the receiving slot (811) enable each of the L-shaped snap blocks (82) to rotate about a pivot axis of the second end (829b) of the bottom portion (829), the pivot axis Is perpendicular to the imaginary axis (L). In a normal state, the first end portion (829a) of the bottom portion (829) faces the imaginary axis (L), and the snap claw (820) faces the One direction (D1) spirally extending, wherein the two L-shaped snap blocks (82) have an accommodating space (86) therebetween, and the holding member (89) is connected to the bottom of each of the L-shaped snap blocks (82) The hooks (826) of (829) are lapped together. The transmission assembly (100) of the photosensitive drum of claim 22, further comprising a sleeve (30), a gear member (60), and an elastic member (50); the sleeve (30) has a body (32), a shaft hole (322) extending through the body (32) along the imaginary axis (L), and at least one guide groove (324) formed in the body (32) and communicating with the shaft hole (322) ), the shaft (70) of the transmission member (20) is rotatable and axially movable The at least one protrusion (75) of the shaft (70) is movably received in the at least one guiding groove (324), and the gear member (60) is used for the shaft hole (322). Connecting the photosensitive drum, the gear member (60) has a tube body (61) extending along the imaginary axis (L) for receiving the body (32) of the sleeve (30), so that the sleeve (30) The gear member (60) is coupled to the gear member (60) so as not to be rotatable about the imaginary axis (L). The elastic member (50) is disposed in the shaft hole (322) of the sleeve (30) and has its two ends respectively Abutting against a bottom wall (65) of the gear member (60) and a second end (72) of the shaft (70) of the transmission member (20).