WO2017144022A1

WO2017144022A1 - Developing cartridge and transmission device in developing cartridge

Info

Publication number: WO2017144022A1
Application number: PCT/CN2017/074891
Authority: WO
Inventors: 刘均庆; 文雪亮
Original assignee: 中山诚威科技有限公司
Priority date: 2016-02-26
Filing date: 2017-02-25
Publication date: 2017-08-31

Abstract

A developing cartridge (D) and a transmission device in a developing cartridge (D), the developing cartridge (D) comprising a developing cartridge housing (1) and a driving assembly (D0) installed at one longitudinal end of the developing cartridge (D), the developing cartridge (D) having a conductive end (E) and a driving end (F), the driving assembly (D0) comprising a power transmission means (2) and an actuating mechanism (FA) that are combined with each other, the actuating mechanism (FA) comprising a first actuating rod (3) and a second actuating rod (4) that are joint with each other, one end of the first actuating rod (3) being combined with the power transmission means (2), the other end being joint with one end of the second actuating rod (4), the other end of the second actuating rod (4) being subjected to an external force; when the second actuating rod (4) is subjected to an external force, the first actuating rod (3) rotating within the plane comprising a longitudinal direction X and a horizontal direction Y of the developing cartridge (D), and the second actuating rod (4) rotating within the plane comprising a horizontal direction Y and a vertical direction Z of the developing cartridge (D).

Description

Developing cartridge and transmission in the developing cartridge

Technical field

The present invention relates to the field of electrophotographic imaging, and more particularly to a developing device detachably mounted in an electrophotographic image forming apparatus and a transmission device in the developing cartridge.

Background technique

Electrophotographic imaging equipment (hereinafter referred to as "equipment") is one of the indispensable equipments in the modern office field. Common equipment includes laser printers, laser copiers, etc., both of which scan the photosensitive elements with a laser beam loaded with target information. Forming an electrostatic latent image on the surface of the photosensitive member, developing the electrostatic latent image with the developer carried on the surface of the developing member, and finally transferring the developed electrostatic latent image to the dielectric material through a transfer device in the apparatus to complete the imaging process.

The above developer is generally housed in a developing cartridge which is detachably mounted in the apparatus as a part of the process cartridge, and the photosensitive member may be installed as a rotating member inside the apparatus or may be mounted in the process cartridge. The developing member is mounted in the developing cartridge and opposed to the photosensitive member.

As the rotating member in the process cartridge, whether the photosensitive member or the developing member is to be kept rotating, it is necessary to continuously receive the driving force, and there is now a developing cartridge in which a developing member is mounted, and one end of the developing cartridge is mounted with power. A transfer device that receives a driving force from inside the device and transmits the received driving force to the developing member.

A power transmission device of the prior art includes a gear portion fixedly mounted at one end of the developing cartridge, and a power receiving member mounted in the gear portion and swinging freely, the power receiving member having a ball at one end and perforating the ball body The groove is provided with a projection on the inner surface of the gear portion, and the power receiving member and the gear portion are coupled by the cooperation of the punching groove and the protrusion, and the other end of the power receiving member receives the driving force from the inside of the laser printer. The power receiving member in such a structure is a spherical body at one end of the power receiving member. Therefore, the rotation axis of the power receiving member can be freely yawed with respect to the rotation axis of the photosensitive cylinder, that is, the rotation axes of the two can be coaxial. It can have a certain angle of inclination.

As described above, the existing power receiving member is freely swingable in the gear portion, and therefore, the ball of the power receiving member and the gear portion are not tightly engaged, and the power receiving member may be in contact with the developing cartridge during transportation. The gear portion is disengaged, causing the power transmission device to fail as a whole, thereby causing an unfavorable situation in which the end user cannot use the developing cartridge. Therefore, the existing power transmission device and even the existing developing cartridge need further improvement.

Summary of the invention

The present invention provides a developing cartridge in which a power receiving member mounted in a developing cartridge is not provided with a ball body, and the power receiving member and the gear portion are integrated by a connecting mechanism, and therefore, the power receiving member according to the present invention does not exist and the gear portion The possibility of being out of combination.

To achieve the above object, the present invention adopts the following scheme:

a developing cartridge comprising a developing cartridge housing and a driving assembly mounted at a longitudinal end of the developing cartridge, the developing cartridge having a conductive end and a driving end, the driving assembly including a power transmission device and an acting mechanism coupled to each other, the acting mechanism The first action bar and the second action bar are combined with each other, one end of the first action bar is combined with the power transmission device, the other end is coupled with one end of the second action bar, and the other end of the second action bar receives an external force When the second action bar receives the external force, the first action bar rotates in a plane including the longitudinal direction X and the lateral direction Y of the developing cartridge, and the second action bar rotates in a plane including the lateral direction Y and the vertical direction Z of the developing cartridge.

In the +Y direction of the developing cartridge, at least one of the rotation axis of the first action bar and the rotation axis of the second action bar is located upstream of the rotation axis of the power transmission device; preferably, the rotation axis of the first action bar and the second The axes of rotation of the rods are all located upstream of the axis of rotation of the power transmission device.

Further, as viewed in the vertical direction Z, the axis of rotation of the first action bar is located between the axis of rotation of the second action bar and the axis of rotation of the power transmitting device.

The present invention also provides a transmission device coupled with a power transmission device and mounted on a driving end of the developing cartridge, including a driving force receiving gear and a first rotating member gear that mesh with each other, the first rotation The gear is for driving a rotation of the first rotating member rotatably disposed in the developing cartridge housing, and a rotation axis of the second rotating member rotatably disposed in the developing cartridge housing is collinear with a rotation axis of the driving force receiving gear .

In order to increase the rotational speed of the second rotating member, preferably, the rotational axis of the driving force receiving gear is also collinear with the rotational axis of the gear portion located in the power transmitting device.

DRAWINGS

Fig. 1A is a schematic view showing the entire structure of a developing cartridge according to the present invention.

Fig. 1B is a schematic view showing the entire structure of the developing cartridge according to the present invention as viewed from another angle.

2 is a schematic view showing the overall structure of the developing cartridge according to the present invention after removing the second end cover and the third end cover.

Figure 3 is a schematic view of the drive end of the developing cartridge.

Figure 4 is a schematic view of the first action bar.

5A and 5B are schematic views of the second action bar viewed from different angles.

Fig. 5C is a side view of the second action bar.

Figure 6 is an exploded perspective view of the drive assembly and a portion of the end cap of the present invention.

Figure 7 is a schematic view showing the structure of the intermediate member of the present invention.

Figure 8 is a schematic view showing the structure of the support member of the present invention.

Fig. 9 is a schematic structural view of a gear portion of the present invention.

Figure 10A is a schematic view showing the front structure of the second end cap of the present invention.

Figure 10B is a schematic view showing the reverse structure of the second end cap of the present invention.

Fig. 11A is a cross-sectional view taken along line A-A of Fig. 3 when the power receiving member is in a retracted state.

Fig. 11B is a cross-sectional view taken along line A-A of Fig. 3 when the power receiving member is extended.

Figure 12 is a schematic view showing the state in which the first action bar is pressed by the second action bar in the present invention.

Figure 13 is a cross-sectional view of the developing cartridge as viewed in the -X direction after being cut transversely of the developing cartridge.

Figure 14 is a view showing the structure of the developing cartridge as viewed in the -Z direction.

detailed description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1A is a schematic view showing the overall structure of a developing cartridge according to the present invention; and FIG. 1B is a schematic view showing the overall structure of the developing cartridge according to another aspect of the present invention. As shown in FIG. 1, the longitudinal direction of the developing cartridge D (the longitudinal direction of the first rotary member) is defined as the longitudinal direction X, and the offline direction of the developing cartridge is the lateral direction Y, and the direction perpendicular to the longitudinal direction X and the lateral direction Y is vertical. To Z, the following longitudinal, lateral and vertical directions are consistent with this definition.

The developing cartridge D includes a developing cartridge housing 1, a first rotating member 10 rotatably mounted in the housing 1, and a driving assembly D0 mounted at one longitudinal end of the developing cartridge, the driving assembly D0 including a power transmission device coupled to each other 2 and an action mechanism FA; the first rotary member 10 has a rotation axis L1, and a driving force is received by a first gear 101 mounted at one longitudinal end thereof in combination with the power transmission device 2, the power transmission device 2 having a rotation axis L2 And in combination with a power take-off within the apparatus, the axis of rotation L2 being parallel to the axis of rotation L1.

When the developing cartridge D is installed in the device, the power transmission device 2 and the power output member are in a disengaged state, and under the action of the action mechanism FA, the power transmission device 2 completes the combination with the power output member to ensure stable reception of the power transmission device 2. Driving force from the power output member; when the developing cartridge D needs to be taken out from the device, under the action of the action mechanism FA, the power The transfer device 2 is disengaged from the power take-off.

As shown in FIG. 1A and FIG. 1B, the developing cartridge D has a conductive end E and a driving end F, and a conductive end cover respectively located at the conductive end and a driving end cover at the driving end, and the first rotating member 10 is mounted on the conductive end. Between the end cap and the drive end cap, after the developing cartridge is mounted to a predetermined position in the apparatus, the conductive end E is for receiving power from the device, and the driving end F is for receiving a driving force from the device. In the embodiment of the present invention, the driving component D0 is mounted on the driving end; the driving end cover includes a plurality of end caps that are sequentially combined, specifically, a first end cover 11, a second end cover 12, and a third, which are sequentially combined. The end cover 13; the conductive end cover includes a fourth end cover 14, the three end covers of the driving end are sequentially joined together by screws, wherein the first end cover 11 is connected with the developing cartridge housing 1, the first gear The 101 is mounted on the first end cap 11 and the action mechanism is mounted on one of the first end cap 11, the second end cap 12 and the third end cap 13.

During the operation of the developing cartridge D, the first rotating member 10 must be close to the mating member. Therefore, in order to ensure that the developing quality is not affected, it is preferable to urge the developing cartridge housing 1 to ensure the first rotation. The member 10 is adjacent to the fitting member. As shown in FIG. 1B, the developing cartridge D further includes an urging portion 140 respectively disposed at a longitudinal end of the developing cartridge housing 1 and an elastic member connected to the urging portion. Preferably, The two longitudinal ends of the developing cartridge housing, that is, the conductive end E and the driving end F are respectively provided with the pushing portion 140 and the elastic member. When the developing cartridge D is mounted to a predetermined position of the device, the pushing portion 140 is correspondingly received in the device. The thrust of the component, thereby pushing the first rotating member 10 close to the mating member.

As will be described hereinafter, the pushing portion 140 at the driving end F is the second force receiving portion 41, and the elastic member at the driving end is the third elastic member 46. As described above, the driving force received by the power transmitting device 2 is transmitted to the first rotating member 10 through the first gear 101, and thus, the power transmitting device 2 is not directly connected to the first rotating member 10, and the rotational axes L1 and L2 does not coincide, but is parallel to each other (as shown in Figure 1A).

[Action mechanism]

As described above, the driving assembly D0 includes the power transmitting device 2 and the acting mechanism FA coupled to each other. When the developing cartridge D needs to be operated, the power transmitting device 2 is combined with the power output member in the device, and the developing cartridge D needs to be taken out from the device. When taken out, the power transmission device 2 is disengaged from the power output member in the device, and the combination and disengagement process of the power transmission device 2 and the power output member are all performed by the action mechanism FA.

2 is a schematic view showing the overall structure of the developing cartridge according to the present invention after removing the second end cover and the third end cover; FIG. 3 is a schematic view of the driving end of the developing cartridge; FIG. 4 is a schematic view of the first acting rod; FIG. 5A and FIG. A schematic view of the second action bar is viewed from a different angle; Figure 5C is a side view of the second action bar.

As shown in FIG. 2 and FIG. 3, the action mechanism FA includes a first action bar 3 and a second action bar 4 coupled to each other. One end of the first action bar 3 is combined with the power transmission device 2, and the other end and the second action are combined. One end of the rod 4 is coupled, and the other end of the second rod 4 receives an external force; when the second rod 4 receives an external force, the second rod 4 includes The in-plane rotation of the shadow box lateral direction Y and the vertical direction Z, the first action bar 3 rotates in a plane including the developing cartridge longitudinal direction X and the lateral direction Y; the external force is derived from the apparatus.

As shown in FIG. 4, the first action bar 3 includes a first intermediate lever 30 and a first force receiving portion 31 and a lifting portion 32 respectively located at both ends in the longitudinal direction of the first intermediate lever 30, the first intermediate lever 30 having The upper surface 303, the lower surface 304 and the side surface 305, the first force receiving portion 31 has the same lower surface as the first intermediate rod 30, and the lifting portion 32 has the same upper surface as the first intermediate rod 30; The force receiving portion 31 includes a pressing surface 31a and a holding surface 31b which are disposed adjacent to each other, and the pressing surface 31a is a sloped surface. As shown in the drawing, in the longitudinal direction of the first intermediate rod 30, the first force is directed along the lifting portion 32. The direction of the portion 31 is inclined from the upper surface 303 toward the holding surface 31b to form a pressing surface 31a; the holding surface 31b is for maintaining contact with the second action rod 4, and continuously receives the force from the second action rod 4; The lifting portion 32 includes an insertion block 321 disposed opposite to the first force receiving portion 31. The insertion block 321 is combined with the power transmission device 2 to avoid the intermediate member 22 (as shown in FIG. 11A), and the lifting portion 32 further includes a second relief portion 322 opposite to the force receiving portion 31, the second relief portion 322 and the middle The lower surface 304 of the rod is on the same side and is formed in the insert block 321 to be cut from the lower surface 303 to the upper surface 304 to form a depression.

As shown in FIG. 5A, FIG. 5B and FIG. 5C, the second action bar 4 includes a second intermediate lever 40 and a second force receiving portion 41 and a joint portion 42 respectively located at the two ends in the longitudinal direction of the second intermediate lever, the second receiving The force portion 41 has the same upper surface as the second intermediate rod 40; the second force receiving portion 41 receives an external force, and the joint portion 42 is combined with the first action rod 3 for transmitting the force to the first action rod 3; for the purpose of the force transmission, the second action bar 4 adopts a lever structure, that is, the second action bar 4 rotates around the rotation axis. As shown, the second action bar 4 further includes a rotation disposed therein. The hole 44 has an axis of rotation L4. Preferably, the rotating hole 44 is disposed on the second intermediate rod 40; limited by the structure of the developing cartridge D and the apparatus, and considering the manufacturing cost of the second acting rod 4, as shown in the figure As shown in FIG. 5C, in the direction of the rotation axis L4 of the second action lever 4, the joint portion 42 has a height difference h with the second force receiving portion 41 or the second intermediate rod 40, and at this time, the second intermediate rod 40 and the joint portion 42 is connected by a connecting portion 43; of course, if the manufacturing cost of the second action bar 4 is not considered, the height difference h may also be absent, that is, the upper surfaces of the second force receiving portion 41, the second intermediate rod 40, and the joint portion 42 are the same.

When the first force receiving portion 31 receives the force, it is transmitted to the lifting portion 32 through the first intermediate rod 30, and then transmitted to the power transmission device 2 by the lifting portion 32. In the embodiment of the invention, the first action rod 3 A lever structure is also adopted, that is, the first action bar 3 is rotated about the rotation axis. As shown in FIGS. 3 and 4, the first action bar 3 is rotated about the rotating portion, the rotation axis thereof is L3, and the rotating portion is formed at the driving end. The end cover is provided with a concave portion, and at the same time, a convex portion combined with the concave portion is disposed at a corresponding position of the first action rod 3, or a convex portion is disposed on the driving end cover, and at the same time, the corresponding position of the first action rod 3 is disposed. The concave portion in which the convex portion is combined. In the embodiment of the present invention, a concave portion is disposed on the driving end cover, and a convex portion combined with the concave portion is disposed at a corresponding position of the first acting rod 3. Specifically, the first acting rod 3 further includes a side surface 305. Outer protrusion The rotation protrusion 33 is provided with a corresponding rotation groove 126 (which will be described later) on the drive end cover, and the rotation protrusion 33 and the rotation groove 113 are both set to ensure the operational stability of the first action bar 3 Two; as shown in FIG. 4, the two rotating protrusions 33 protrude from the side surface 305 of the first action bar 3 in a direction perpendicular to the longitudinal direction of the first action bar 3, or in the direction of the vertical direction of the developing cartridge Projected (as shown in FIG. 3), but the two rotating protrusions 33 are separated from each other, and this design helps to reduce the friction between the rotating protrusion 33 and the rotating groove 113 when the rotating protrusion 33 is engaged with the rotating groove 126. The force increases the flexibility of the action rod 3 and ensures that the first action rod 3 is stable.

Continuing with FIG. 5B and FIG. 5C, the joint portion 42 includes a coupling rod 421 coupled to the second intermediate rod 40 and an action block 422 protruding from the coupling rod, the coupling rod 421 having a side surface 421a and a coupling rod bottom surface 421b. The coupling rod side surface 421a is a joint surface that is initially combined with the first action rod 3, the action block 422 protrudes from the joint rod bottom surface 421b, and the joint rod bottom surface 421b is located in a space between the action block 422 and the second intermediate rod 40. The neutral portion 423 is located between the active block 422 and the connecting portion 43 when the coupling rod 421 and the second intermediate rod 40 are connected by the connecting portion 43. At this time, the neutral portion 423 is still located at the acting block 422 and the second portion. Between the intermediate rods 40. The action block 422 includes a first active surface 4221, a second active surface 4222, a third active surface 4223, and a fourth active surface 4224 disposed adjacently, the second active surface 4222, the third active surface 4223, and the fourth active surface. 4224 is an inclined surface, and the inclination refers to a bottom surface 421b of the joint rod which is planar with respect to the whole, and has an angle between the two, that is, the second active surface 4222, the third active surface 4223 and the fourth active surface 4224 Both are not parallel to the bottom surface 421b of the joint rod. Generally, the second active surface 4222, the third active surface 4223 and the fourth active surface 4224 are provided for facilitating the guiding of the second acting rod 4 when the first acting rod 3 and the second acting rod 4 are combined. And transmitting the urging force of the second action bar 4 to the first action bar 3, so that the three action surfaces 4223 can be selected according to the materials of the first action bar 3 and the second action bar and the matching precision of the two action bars; The fourth acting surface 4224 also has an effect of preventing the first action bar 3 and the second action bar 4 from interfering with each other, as will be described in detail below; as shown in FIG. 5C, the second action surface 4222 is on the rotation axis L4. The direction exceeds the bottom surface 421b of the coupling rod and extends to the side surface 421a of the coupling rod. This arrangement is more advantageous for guiding the second action rod 4.

As shown in FIG. 3, in order to more clearly show the combination of the first action bar 3 and the second action bar 4, the third end cover 13 is not shown, and when the development cartridge D is assembled, the power transmission device 2 passes through. The second end cap 12, the first action bar 3 and the second action bar 4 are both mounted on the second end cap 12. As described above, the first action bar 3 has the rotation axis L3, the power transmission device 2 has the rotation axis L2, and the second action bar 4 has the rotation axis L4 in the +Y direction, that is, the mounting direction of the developing cartridge, at least the rotation axis L3 and One of the rotation axes L4 is located upstream of the rotation axis L2, and considering the position where the force is applied in the apparatus and the material cost of the second action rod 4, preferably, the first action rod 3 is viewed in the vertical Z direction. The rotation axis L3 is located between the rotation axis L4 of the second action lever 4 and the rotation axis 2 of the power transmission device 2. The lifting portion 32 of the first action rod 3 is coupled to the power transmission device 2, and the first force receiving portion 31 is coupled to the joint portion 42 of the second action rod 4, and the joint surface is in a state where the second action rod 4 is unstressed. 421a is opposite to the pressing surface 31a, and the neutral portion 423 is opposite to the first acting rod 3 That is, at this time, as seen in the +Y direction, that is, the mounting direction of the developing cartridge, the overlapping portion of the first action bar 3 and the second action bar 4 is a part of the neutral portion 423, and the action block 422 does not interact with the first action bar. 3 opposite, and thus, in the direction of the axis of rotation L4, the first action bar 3 and the second action bar 4 will remain in contact. However, when the first action bar 3 and the second action bar 4 are relatively moved, both In order to improve the defect, the inventors propose that a certain gap is maintained between the first action bar 3 and the second action bar 4 in the direction of the rotation axis L4, specifically at least in The first action bar 3 and the second action bar 4 are provided with a relief portion. As shown in FIG. 4, in the embodiment of the present invention, the first action bar 3 further includes a first relief portion 301 disposed on the first intermediate bar 30. It is formed to be recessed from the upper surface 303 of the first intermediate rod 30 to the lower surface 304. Of course, those skilled in the art should understand that the first relief portion 301 can also be disposed on the second action bar 4, specifically at a position opposite to the first action bar 3 and the first action bar 3.

When the force receiving surface 411 is subjected to a force, the second acting rod 4 rotates around the rotating shaft L4 in the direction indicated by r1, while the first force receiving portion 31 moves in the -X direction, and the lifting portion 32 moves in the +X direction. Thereby, the power receiving member 21 is pulled out along the rotation axis L2. Due to the internal structure of the developing cartridge D and the space inside the device, the space and the stroke of the second force receiving portion 41 moving in the direction indicated by r1 are limited, and the space in which the joint portion 42 moves in the direction indicated by r1 is also limited. To ensure that the power receiving member 21 is extended and combined with the power output member, the stroke of the lifting portion 32 is constant. Generally, the first acting rod 3 is set as a labor-saving lever. At this time, according to the principle of the lever, The stroke of the first force receiving portion 31 is definitely greater than the stroke of the lifting portion 32. Accordingly, the joint portion 42 will travel a large stroke along with the first force receiving portion 31, and in order to ensure a large stroke of the joint portion 42, The second action rod 4 needs to be set as a laborious lever, that is, the second force receiving portion 41 receives a large force and travels a smaller stroke; as shown in FIG. 5C, the end of the second force receiving portion 41 to the second action rod The distance t2 of the rotation axis L4 of 4 is smaller than the distance t1 from the end of the joint portion 42 to the rotation axis L4 of the second action rod 4.

[Power transmission device]

Figure 6 is an exploded perspective view of the drive assembly and a portion of the end cover of the present invention; Figure 7 is a schematic structural view of the intermediate member of the present invention; Figure 8 is a schematic structural view of the support member of the present invention; and Figure 9 is a schematic structural view of the gear portion of the present invention.

As shown in FIG. 6, the power transmission device 2 includes a power receiving member 21, a connecting member 27, a gear portion 25, and a reset member 24, which is connected to the connecting member 27 and the gear portion 25, and the power receiving member 21 and the connecting member 27, the connecting member 27 is also engaged with the gear portion 25 for transmitting the driving force received from the outside of the power receiving member 21 to the gear portion 25, the gear portion 25 having the rotation axis L5, and the connecting member 27 having the rotation axis L7 The gear portion 25 is for transmitting the driving force received by the power receiving member 21; the lifting portion 32 of the first action lever 3 is combined with the connecting member 27 for controlling the power by controlling the movement of the connecting member 27. The receiving member 21 is extended and retracted, and thus, the power receiving member 21 can be extended and retracted in the direction of the rotational axis L2 of the power transmitting device 2. In the present invention, after the power transmission device 2 is assembled, the reset member 24 will always be in a state of applying a force, and regardless of the state of the power transmission device 2, the power receiving member The rotation axis of 21, the rotation axis L5 of the gear portion 25, and the rotation axis L7 of the link 27 are always coaxial with the rotation axis L2 of the power transmission device 2, and are parallel to the rotation axis L1 of the first rotary member 10.

The power receiving member 21 includes a first portion 211 and a second portion 212 connected to each other for combining with a power output member and receiving a driving force from the power output member, the first portion 211 being a columnar body. Connected to the connector 27. As shown in FIG. 6, the reset member 24 is a spring (first elastic member), one end of the spring 24 abuts on the connecting member 27, and the other end is fixed to the gear portion 25 or the developing cartridge housing 1, and the spring 24 In the embodiment of the present invention, the other end of the spring 24 abuts on the first end cover 11 or the gear portion 25; in order to realize the connection between the power receiving member 21 and the connecting member 27, a common solution is: A first connecting hole 211a is disposed on the first portion 211 of the power receiving member, and correspondingly, a second connecting hole (not shown) is disposed on the connecting member 27, and the connecting pin 26 passes through the second connecting hole and the first connecting hole respectively. 211a; Of course, the connection of the power receiving member 21 to the connecting member 27 can also be achieved by providing a protrusion on the power receiving member first portion 211 and providing a card slot on the connecting member 27.

The second portion 212 of the power receiving member includes a supporting portion 212a connected to the first portion 211 and a power receiving portion 212b protruding from the supporting portion away from the first portion. Preferably, the power receiving portion 212b is oppositely disposed. The support portion 212a has a disk shape, and the power receiving portions 212b are disposed to face each other in the radial direction of the support portion 212a.

In the present invention, the connecting member 27 includes a separately disposed intermediate member 22 and a support member 23, the power receiving member 21 passes through the intermediate member 22 and enters the support member 23, and the power receiving member 21 and the support member 23 are passed through the above manner. The connection, and thus, the intermediate member 22, the support member 23, and the power receiving member 21 are integrally connected.

As shown in FIG. 7, the intermediate member 22 includes a base 221, a joint portion 222 extending outward from the base upper surface 221a along the rotation axis L7, a first through hole 223 passing through the base 221, and a second passage passing through the joint portion 222. Hole 224. The second through hole 224 has a second through hole upper surface 224a and a second through hole lower surface 224b. In the embodiment of the present invention, the second through hole lower surface 224b is the base upper surface 221a, that is, the second pass. The lower hole surface 224b is a portion of the base upper surface 221a; the center line of the first through hole 223 intersects the center line of the second through hole 224, wherein the first through hole 223 is for allowing the first portion 211 of the power receiving member Through, the second through hole 224 is used for coupling with the first action rod 3, and therefore, the center line of the first through hole 223 coincides with the rotation axis of the power receiving member 21, and the center line of the first through hole 223 is power transmission. The rotation axis L2 of the device 2 or the rotation axis L7 of the connecting member 27; in the embodiment of the invention, the base 221 is a cylindrical table, and the joint portion 222 extends outward from a part of the circumferential direction of the upper surface 221a of the cylindrical table, instead of the whole circumference. As described above, the lifting portion 32 of the action lever 3 is coupled with the connecting member 27, and specifically, the insertion block 321 of the lifting portion 32 is inserted into the second through hole 224 (as shown in Figs. 11A and 11B).

As shown in FIG. 8, the support member 23 includes a support table 230, a support hole 232 facing the intermediate member 22, and a power transmission portion 233 protruding outward from the support table 230, and the first portion 211 of the power receiving member enters the support hole 232. Medium The transmission portion 233 cooperates with the gear portion 25 for transmitting a driving force to the gear portion 25, and the support hole 232 may be a through hole or a blind hole as long as the first portion of the power receiving member can be accommodated; In the example, the support hole 232 is a blind hole, that is, the support member 23 has a bottom surface 234, and one end of the spring 24 abuts against the support bottom surface 234, and the spring 24 is compressed in consideration of the fact that the developing cartridge D is not working. Thus, the spring 24 can be held in contact with the support bottom surface 234 without having to secure the spring 24 to the support bottom surface 234. When the connecting member 27 and the power receiving member are connected by the connecting pin 26, the supporting member 23 further includes a third connecting hole 231 passing through the supporting table 230.

As shown in FIG. 9, the gear portion 25 includes a cylindrical flange body 250, a flange cavity 251 formed by a flange body, and a first housing portion 252 formed on the inner wall of the flange cavity, for the gear portion 25 The received driving force is transmitted, and the gear portion 25 further includes teeth 254 provided on the outer circumference of the flange body 250. The power transmission portion 233 is accommodated by the first housing portion 252. Generally, the number of the power transmission portion 233 and the first housing portion 252 is two, respectively, to more stably transmit the driving force, and prevent the support member 23 from the gear portion. The number of the power transmission portions 233 is preferably not less than three. In the embodiment of the present invention, the number of the power transmission portions 233 is four, and each two are oppositely disposed, and the first housing portion 252 is disposed. The number is also four, and each two are relatively set.

As described above, the lifting portion 32 of the action lever is coupled with the connecting member 27 for controlling the extension and retraction of the power receiving member 21 by controlling the movement of the connecting member 27, and the connecting member 27 includes the intermediate member 22 disposed separately. And the support member 23, the power receiving member passes through the intermediate member 22 and enters the support member 23. When the intermediate member 22 is subjected to the force of the lifting portion 32, the force is transmitted to the power receiving member 21 through a transmission mechanism. In the present invention, the transmission mechanism is coupled to the first portion 211 of the power receiving member and abuts against the base upper surface 221a of the intermediate member. Specifically, the transmission mechanism is a circlip 28 fixed to the first portion 211 of the power receiving member or A step portion extending outward from a surface of the power receiving member first portion 211.

As shown in FIG. 6, when the transmission mechanism is the circlip 28, in order to prevent the circlip 28 from falling off, the outer surface of the first portion 211 of the power receiving member is further provided with a bayonet slot 211b, and the circlip 28 is snapped at the bayonet On the groove 211b. When the power transmission device 2 is assembled and the action lever 3 is completed in combination with the power transmission device 2, as shown in FIGS. 11A and 11B, the insertion block 321 of the lift portion 32 is inserted into the second through hole 224 of the intermediate member 22. The power receiving member 21 passes through the intermediate member 22 into the support member 23, and the connecting pin 26 passes through the support member 23 and the power receiving member 21.

As described above, the spring 24 is compressed when the developing cartridge D is not in operation, and when the power receiving member 21 is extended by the lifting portion 32, the spring 24 is gradually restored to a natural state, however, when the power receiving member 21 needs to be retracted At this time, the first force receiving portion 31 of the first action bar 3 needs to be applied with a force in the +X direction. In the embodiment of the present invention, the second elastic member 35 is mounted in the developing cartridge D as the acting mechanism FA. a part of the second elastic member 35 is a spring mounted between the first action rod 3 and the developing cartridge housing 1, one end of the spring abuts the first action rod 3, and the other end can be coupled with the second end cover 12, The first end cover 11 abuts any one of the developing cartridge housings 1. As shown in FIG. 4, the first action bar 3 further includes a lower set The first holding portion 302 of the surface 304, as shown in FIG. 10A, the second end cover 12 includes a second receiving portion 127 opposite to the first holding portion 302, and one end of the second elastic member 35 is received by the second receiving portion 127. The other end is held by the first holding portion 302.

In order to ensure that the first rotating member 10 is forced to be pushed to a position close to the mating member, the developing cartridge D further includes a pushing portion 140 and an elastic member respectively disposed at the conductive end E and the driving end F, since the second force receiving portion 41 is also required The force of the receiving device, preferably, the second force receiving portion 41 can serve as a pushing portion at the driving end F, and the elastic member 46 at the driving end F serves as a resetting member for resetting the second acting rod 4, thereby acting The mechanism FA further includes a third elastic member (elastic member 46), which is a spring located between the second acting rod 4 and the driving end cap. Similarly, to hold the third elastic member 46, as shown in FIGS. 5A and 5B, the second acting rod 4 further includes a second holding portion 45 disposed therein, and one end of the spring 46 is held by the second holding portion 45. The other end abuts on the driving end cover. Preferably, the second holding portion 45 is disposed on a side opposite to the force receiving surface 411.

Before the developing cartridge D is installed, the spring 24 is kept in a compressed state. When the force receiving surface 411 is subjected to a force, the movement mechanism of the action mechanism FA is: the second force receiving portion 41 rotates around the rotation axis L4 in the direction indicated by r1 (as shown in the figure). 3, the spring 46 is compressed, and the coupling portion 42 applies a force to the first force receiving portion 31 while rotating in the direction indicated by r1, thereby compressing the spring 35, and the lifting portion 32 pulls the power receiving member 21 out while simultaneously The spring 24 gradually returns to the natural state; when the force received by the force receiving surface 411 disappears, the second force receiving portion 41 rotates in a direction opposite to the direction indicated by r1 by the restoring force of the spring 46, and the joint portion 42 Also rotating in a direction opposite to the direction indicated by r1, the force applied to the first force receiving portion 31 disappears, the first force receiving portion 31 is reset by the restoring force of the spring 35, and at the same time, the lifting portion 32 receives power. The piece 21 is pulled back and the spring 24 is compressed. It can be seen that in the process of pulling back the power receiving member 21, it is necessary to ensure that the spring 24 is compressed, and the restoring force of the spring 35 acting on the first force receiving portion 31 must be greater than the force required when the spring 24 is compressed. At the same time, it is ensured that the joint portion 42 no longer applies a force to the first force receiving portion 31, and the restoring force of the spring 46 acting on the second force receiving portion 41 must be greater than the response of the spring 35 acting on the first force receiving portion 31. The force, that is, the elastic force of the third elastic member 46, the second elastic member 35, and the first elastic member 24 are sequentially reduced.

[second end cap]

10A is a schematic front structural view of a second end cap of the present invention; and FIG. 10B is a schematic view showing the reverse structure of the second end cap of the present invention.

As shown, the second end cap 12 includes a bracket 12a and an adjusting portion 12b connected thereto, and the bracket 12a and the adjusting portion 12b are integrally formed. As those skilled in the art, it is easily understood that the bracket 12a and the adjusting portion 12b are also Can be a split structure.

The bracket 12a includes a third through hole 122 for allowing the power transmission device 2 to pass therethrough, a restriction portion 121 disposed along a circumferential direction of the third through hole, and a notch 120 disposed at a periphery of the third through hole, the notch 120 and the first Three-way hole 122 is connected, along +X In the direction, the restricting portion 121 is disposed at the most downstream of the third through hole. In the mounting direction +Y of the developing cartridge, the notch 120 is located upstream of the power transmission device 2, specifically in the mounting direction +Y of the developing cartridge, and the notch 120 is in the arc corresponding to the circumferential direction of the third through hole 122. The point is located upstream of the rotation axis L2 of the power transmission device 2. As shown in FIG. 10A, the restricting portion 121 is cut along with the setting of the notch 120. When viewed in the -X direction, the restricting portion 121 is not a complete circle, and this arrangement is advantageous for the first acting rod 3 to be more flexible. Movement, of course, in the circumferential direction of the third through hole, the restricting portion 121 may be integrally connected, and when viewed in the -X direction, the restricting portion 121 forms a complete circle, at this time, along the -X direction When viewed, the notch 120 is located below the restricting portion 121.

As shown in FIG. 10B, the restricting portion 121 extends inward in the radial direction of the third through hole 122, that is, from the circumferential edge of the third through hole 122 toward the rotation axis L2 thereof, and thus, the restricting portion 121 has the lower surface 123, In the embodiment of the invention, the restricting portion 121 is used for restricting the movement of the connecting member 27, specifically, restricting the movement of the support member 23 in the +X direction, or restricting the movement of the support member 23 away from the developing cartridge housing 1; After the support member 23 receives the force of the lifting portion 32 of the first action lever 3, the support member 23, the intermediate member 22 and the power receiving member 21 move together in a direction away from the developing cartridge housing 1, when power is received. When the distance of movement of the member 21 is sufficient to be combined with the power output member, the movement of the power receiving member 21 in a direction away from the developing cartridge housing 1 needs to be restricted; since the power receiving member 21, the intermediate member 22 and the support member 23 are integrally connected, The object can be achieved by limiting at least any one of the power receiving member 21, the intermediate member 22, and the support member 23. In the embodiment of the present invention, the restricting portion 121 restricts the movement of the power receiving member 21 by restricting the power transmitting portion 233 on the support member 23. At this time, the power transmitting portion 233 abuts against the restricting portion lower surface 123.

As shown in FIG. 10A, the adjusting portion 12b includes a guiding groove 125 connected to the notch 120 and a rotating groove 126 engaged with the rotating protrusion, and the guiding groove 125 is used to guide the first when the first acting rod 3 moves. The action lever 3 better ensures that the movement trajectory of the first action lever 3 is in the plane including the longitudinal direction X and the lateral direction Y of the developing cartridge. Meanwhile, in order to prevent the first action bar 3 and the second action bar 4 from falling off from the second end cover 12, the third end cover 13 is installed downstream of the second end cover 12 in the +X direction of the developing cartridge D. The first action bar 3 and the second action bar 4 are clamped between the second end cover 12 and the third end cover 13. Similarly, the third end cover 13 can also maintain the movement of the first action bar 3. The role.

[Extension and retraction of power receiving parts]

11A is a cross-sectional view taken along line AA of FIG. 3 when the power receiving member is in a retracted state; FIG. 11B is a cross-sectional view taken along line AA of FIG. 3 when the power receiving member is in an extended state; and FIG. 12 is a first acting rod in the present invention. A state diagram in which the second action bar is pressed and the two are combined.

As shown in FIG. 11A, when the first action bar 3 is unstressed, the first action bar 3 is substantially parallel to the lateral direction Y of the developing cartridge D, the coupling lever 421 is opposed to the first relief portion 301, and the joint surface 421a is pressed. The surface 31a is opposed to the power receiving member 21 in a retracted state; when the second acting rod 4 is subjected to an external force and starts to rotate in the direction indicated by r1 in Fig. 3, the joint surface 421a Starting to contact with the pressing surface 31a, the action block 422 gradually approaches the first force receiving portion 31. As the joint surface 421a moves from the pressing surface 31a to the holding surface 31b, the acting block 422 is at the second acting surface 4222 and the third acting surface 4223. And the guiding action of the fourth acting surface 4224 gradually moves to the holding surface 31b. As shown in FIG. 11B, the acting block 422 reaches above the holding surface 31b, and the first force receiving portion 31 compresses the spring 35, and at the same time, the lifting portion 32 and the first portion The two-hole upper surface 224a is in contact, and the power receiving member 21 is pulled out by the lifting portion 32. At this time, since the holding surface 31b is inclined with respect to the lateral direction Y and the vertical direction Z, the first acting surface 4221 remains with respect to the lateral direction Y and the vertical direction. Parallel to Z, during the action block 422 continues to rotate in the direction indicated by r1, the active block 422 will be in line contact with the retaining surface 31b, as shown in Figures 11B and 12, the first active surface 4221 and the fourth active surface The intersection line f of 4224 is in contact with the holding surface 31b.

When the second action bar 4 is no longer subjected to an external force and is rotated in a direction opposite to the direction indicated by r1 by the elastic restoring force of the third elastic member 46, the joint portion 42 is gradually disengaged from the first force receiving portion 31. The first force receiving portion 31 pushes the first force receiving portion 31 to move in the +X direction under the elastic restoring force of the second elastic member 35, while the lifting portion 32 moves in the -X direction to compress the first elastic member 24. At the same time, the power receiving member 21 is retracted. As can be seen from FIG. 11A and FIG. 11B, the first force receiving portion 31 is closer to the developing box when the power receiving member 21 is in the extended state than when the power receiving member 21 is in the retracted state. End E.

As described above, the inclined arrangement of the fourth acting surface 4224 also has a function of preventing the first action bar 3 and the second action bar 4 from interfering with each other, as indicated by a broken line in FIG. 12, if the fourth acting surface 4224 is not inclined, That is, when the fourth acting surface 4224 and the first acting surface 4221 are perpendicular to each other, when the joint portion 42 is moved to the position shown in FIG. 12, the position of the broken line in the figure will interfere with the holding surface 31b, thereby hindering the further portion of the joint portion 42. motion. It is foreseen that when the fourth acting surface 4224 is not inclined, and the joint portion 42 is moved to the position shown in FIG. 12, although the retaining surface 31b can continue to move in the -X direction, the fourth acting surface 4224 and the first at this time The intersection line f' of the active surface 4221 can be in contact with the holding surface 31b, but the holding surface 31b at this time needs to continue to move one end distance in the -X direction, and accordingly, the lifting portion 32 will continue to move in the +X direction, thereby The amount of movement of the power receiving member 21 in the +X direction is excessively large, so that the power receiving member 21 cannot be smoothly combined with the power output member.

[transmission]

In the developing cartridge D of the present invention, the first rotating member 10 is engaged with the fitting member, and at the same time, the first rotating member 10 supplies the developer to the fitting member, and the developer on the first rotating member 10 comes from In the developing cartridge D.

As shown in FIGS. 1A and 2, the developing cartridge D further includes a second rotating member 16 rotatably mounted in the housing 1, and a transmission at the driving end, the second rotating member 16 being parallel to the first rotating member 10. The second rotating member 16 is provided for supplying the developer to the first rotating member 10, and the transmission is combined with the power transmitting device 2, which is a gear set having a plurality of intermeshing gears.

The first rotating member 10 is a developing member, the second rotating member 16 is a powder feeding member, and the second rotating member 16 is installed between the conductive end cover and the driving end cover, and the driving device receives the driving force respectively It is transmitted to the first rotating member 10 and the second rotating member 16. After the development of the developing cartridge D, the developing member 10 and the powder feeding member 16 are in close contact, and during the operation of the developing cartridge D, the powder feeding member 16 supplies the developer to the developing member 10.

Figure 13 is a cross-sectional view of the developing cartridge as viewed in the -X direction after being cut transversely of the developing cartridge; and Figure 14 is a view showing the structure of the developing cartridge as viewed in the -Z direction.

As shown in FIG. 13, the casing 1 is internally formed with a accommodating chamber 18 in which a developer is accommodated, and in order to prevent agglomeration of the developer, the developing cartridge D further includes a stirring member 17 provided in the casing. In operation, the agitating member 17 is driven to rotate by agitating gear 171 provided at one longitudinal end thereof.

As shown in FIGS. 2 and 14, the gear set (transmission) includes a driving force receiving gear 8 and a first rotating member gear 101 that mesh with each other, and the first rotating member gear 101 is used to drive the first rotating member ( The developing member 10 is rotated. In the present invention, the second rotating member (powder conveying member) 16 is combined with the driving force receiving gear 8, and the rotational axes L6 and L8 of the two are collinear; meanwhile, in order to transmit the driving force to the agitating member 17, the gear The group (transmission) further includes an intermediate gear G and a stirring gear 171 for driving the rotation of the stirring member 17, wherein the driving force receiving gear 8 is also meshed with the intermediate gear G, and the intermediate gear G is also meshed with the agitating gear 171; The intermediate gear G is a double gear, and the driving force receiving gear 8 meshes with the large end G1 of the double gear, and the agitating gear 171 meshes with the small end G2 of the double gear.

As described above, the power transmission device 2 includes the gear portion 25 for transmitting the received driving force, and the driving force receiving gear 8 is for receiving the driving force, and the driving force receiving gear 8 and the second rotating member ( The powder feeding member 16 is combined, and the rotation axes L6 and L8 are collinear. In order to increase the rotation speed of the second rotating member (powder conveying member) 16, in the present invention, the driving force receiving gear 8 has the rotation axis L8 and the gear portion 25. The rotation axis L5 is also collinear, and thus, the driving force of the gear portion 25 is directly transmitted to the second rotating member (powder conveying member) 16; that is, the rotation axis L2 of the power transmission device 2 and the rotation of the gear portion 25 at this time. The axis L5, the rotation axis L8 of the driving force receiving gear 8, and the rotation axis L6 of the second rotating member (powder conveying member) 16 are collinear, and the gear portion 25 starts to rotate while the driving force receiving gear 8 and the second rotating member (send) The powder member 16 is also driven to rotate, and further, the driving force receiving gear 8 transmits the driving force to the first rotating member (developing member) 10 and the intermediate gear G, respectively.

The structure of the gear portion 25 and the driving force receiving gear 8 can be simplified in consideration of the limited space inside the developing cartridge D, so that the teeth 254 of the gear portion 25 directly mesh with the first rotating member gear 101 and the intermediate gear G; In a manner, for example, the driving force receiving gear 8 is mounted inside the gear portion 25, and the second rotating member (powder conveying member) 16 is connected to at least one of the driving force receiving gear 8 and the gear portion 25; preferably, the driving force is received The gear 8 is eliminated, and the second rotating member (powder conveying member) 16 is directly coupled to the gear portion 25.

As described above, the second rotating member (powder conveying member) 16 in the present invention is directly driven to rotate by the driving force receiving gear 8, without having to pass through the agitating member gear 171 and the intermediate gear G, and therefore, the second rotating member (send The rotational speed of the powder member 16 is greatly increased, and the amount of the developer supplied to the first rotary member (developing member) 10 is sufficient, which effectively ensures the stability of the image quality.

The power receiving member 21 in the embodiment of the present invention does not have a ball mounted, and its rotation axis is kept parallel with the rotation axis L1 of the first rotating member 10, and the power receiving member 21 and the gear portion 25 are integrally connected by the connecting member 27, so When the developing cartridge D is in the process of transportation, the power receiving member 21 of the present invention does not have the possibility of being disengaged from the gear portion 25, thereby effectively ensuring the overall stability of the power transmitting device 2 without occurrence of the power transmitting device. 2 The failure caused by the end user cannot use the developing cartridge D.

Claims

a developing cartridge including a developing cartridge housing and a driving assembly mounted at a longitudinal end of the developing cartridge, the developing cartridge having a conductive end and a driving end, the driving assembly including a power transmission device and an acting mechanism coupled to each other, wherein

The action mechanism includes a first action bar and a second action bar combined with each other, one end of the first action bar is coupled with the power transmission device, the other end is coupled with one end of the second action bar, and the other end of the second action bar Receiving external forces;

When the second action bar receives the external force, the first action bar rotates in a plane including the longitudinal direction X and the lateral direction Y of the developing cartridge, and the second action bar rotates in a plane including the lateral direction Y and the vertical direction Z of the developing cartridge.
The developing cartridge according to claim 1, wherein the rotation axis of the first action bar is located upstream of the rotation axis of the power transmission device in the +Y direction of the developing cartridge.
The developing cartridge according to claim 1, wherein the rotation axis of the second action bar is located upstream of the rotation axis of the power transmission device in the +Y direction of the developing cartridge.
The developing cartridge according to claim 2 or 3, wherein the rotation axis of the first action bar is located between the rotation axis of the second action bar and the rotational axis of the power transmitting device as viewed in the vertical direction Z.
The developing cartridge according to claim 4, further comprising a conductive end cap respectively at the conductive end and a driving end cap at the driving end, wherein the driving end cap includes a plurality of end caps that are sequentially coupled.
The developing cartridge according to claim 5, wherein said driving end cover comprises a first end cover, a second end cover and a third end cover which are sequentially coupled, and the first end cover is coupled to the developing cartridge housing, The action mechanism is mounted on one of the first end cap, the second end cap, and the third end cap.
The developing cartridge according to claim 6, wherein the second end cover includes a bracket and an adjustment portion coupled thereto, the bracket including a third through hole for allowing the power transmission device to pass therethrough, and a third through hole A gap around the hole.
The developing cartridge according to claim 7, wherein the notch is in communication with the third through hole.
The developing cartridge according to claim 8, wherein said notch is located upstream of the power transmitting means along +Y of the developing cartridge.
The developing cartridge according to claim 8, wherein a midpoint of a circular arc corresponding to a circumferential direction of the third through hole is located upstream of a rotation axis of the power transmission device in a mounting direction +Y of the developing cartridge.
The developing cartridge according to claim 9 or 10, wherein the bracket further includes a restricting portion provided along a circumferential direction of the third through hole, the restricting portion being disposed at the third through hole in the +X direction The most downstream.
A developing cartridge according to claim 11, wherein said action mechanism is mounted on said second end cap, said first action bar comprising a first intermediate lever and a first end respectively located at both ends of said first intermediate lever in the longitudinal direction The force receiving portion and the lifting portion are combined with the power transmission device.
The developing cartridge according to claim 12, wherein the lifting portion includes a second relief portion disposed opposite to the first force receiving portion, the second relief portion being on the same side as the lower surface of the intermediate rod.
The developing cartridge according to claim 13, wherein said second action bar includes a second intermediate lever and a second force receiving portion and a joint portion respectively located at both ends in the longitudinal direction of the second intermediate lever, said combination The portion is coupled to the first action bar, and the second force receiving portion receives the external force.
The developing cartridge according to claim 14, wherein said joint portion includes a coupling rod coupled to the second intermediate rod and an action block projecting from the coupling rod.
The developing cartridge according to claim 15, wherein said action block protrudes from a bottom surface of the joint rod, and a neutral portion is formed between the action block and the second intermediate rod.
The developing cartridge according to claim 16, wherein said action block includes adjacent first, second, and fourth acting surfaces, and said fourth active surface is an inclined surface.
A transmission device, characterized in that the transmission device is combined with a power transmission device and is mounted on a driving end of the developing cartridge according to any one of claims 1-17.
A transmission device according to claim 18, wherein said developing cartridge further comprises a first rotating member and a second rotating member rotatably mounted in the housing, the second rotating member for first The rotating member supplies the developer.
A transmission device according to claim 19, wherein said transmission means includes a driving force receiving gear and a first rotating member gear that mesh with each other, said first rotating member gear for driving the first rotating member to rotate .
A transmission according to claim 20, wherein the rotational axis of said second rotary member is collinear with the rotational axis of the drive force receiving gear.
A transmission device according to claim 21, wherein said power transmission means includes a power receiving member and a gear portion that transmits a driving force received by said power receiving member, said driving force receiving axis of rotation of said gear It is also collinear with the axis of rotation of the gear portion.