WO2015144090A1

WO2015144090A1 - Power receiving unit and processing cartridge

Info

Publication number: WO2015144090A1
Application number: PCT/CN2015/075281
Authority: WO
Inventors: 丁戈明; 曾丽坤; 罗琴
Original assignee: 珠海赛纳打印科技股份有限公司
Priority date: 2014-03-28
Filing date: 2015-03-27
Publication date: 2015-10-01

Abstract

A power receiving unit (100) and a processing cartridge (C). The power receiving unit (100) is detachably engaged with a drive unit (500) on an electronic imaging device and receives power from the drive unit (500), and comprises an engagement part (110), a connection part (120) and a transfer part (150), wherein the engagement part (110) is used for engaging with the drive unit (500) on the electronic imaging device to receive the drive force of rotation; the transfer part (150) is used for transferring the drive force of rotation into the processing cartridge (C); and the connection part (120) is used for connecting the engagement part (110) and the transfer part (150). The connection part (120) at least comprises an elastic component, and when the power receiving unit (100) is engaged with or disengaged from the drive unit (500), the elastic component is bent, thereby avoiding or reducing the mutual impact between structures.

Description

Power receiving unit and process box

Technical field

The present invention relates to mechanical transmission technology, and more particularly to a power receiving unit and a process cartridge.

Background technique

When the printer is in operation, in order to carry out paper feeding, printing, etc., a mechanical transmission device is required to drive the power of the driving device to the electronic imaging device, thereby completing the development (that is, the "printing" that the user often calls).

Generally, a transmission device for developing an electronic image forming apparatus in a printer is composed of a process cartridge that is detachably mountable on an electronic image forming apparatus. A rotational force driving unit is disposed in the electronic imaging device. The process cartridge mainly includes a developing unit, a toner, a powder controlling unit, and the like, and a power receiving unit disposed at one end of the process cartridge along the axial direction of the developing unit, and the power receiving unit is provided with a power receiving head. After the power receiving head and the driving unit of the electronic image forming apparatus are engaged with each other, the driving force of the rotation is transmitted to the power receiving unit, and finally the developing unit inside the process cartridge is driven to operate to participate in the developing operation of the electronic image forming apparatus.

In the prior art, before the developing operation of the electronic imaging device, the user needs to mount the process cartridge to the electronic imaging device, and the power receiving unit in the process cartridge needs to be in contact with the driving unit on the electronic imaging device to thereby mesh with each other. In the moment of the mutual contact and engagement, since the structures of the power receiving unit and the driving unit are mutually rigid, the contact and meshing action between the two is usually easy to interfere with each other and the structures collide with each other. If the above phenomenon occurs, the driving unit of the electronic imaging device or the power receiving unit of the process cartridge may be directly worn or broken, so that the driving unit and the power receiving unit are difficult or unable to stably mesh with each other and transmit power, and thus the electronic imaging device Or the process cartridge can therefore not continue to be used normally, and the subsequent development quality will be affected to varying degrees.

Summary of the invention

The invention provides a power receiving unit and a processing box to solve the existing power receiving unit And the drive unit is caused to wear or break due to structural interference or collision, resulting in a technical problem of reducing the service life of the process cartridge or the electronic imaging device.

In one aspect, the present invention provides a driving force receiving unit for detachably engaging a driving unit on an electronic imaging device and receiving power from the driving unit, including an engaging portion, a connecting portion, and a transmitting portion;

The engaging portion is for engaging with a driving unit on the electronic imaging device to receive a driving force for rotation;

The transmitting portion is configured to transmit the driving force of the rotation into the process cartridge;

The connecting portion is configured to connect the engaging portion and the transmitting portion;

The connecting portion includes at least an elastic member;

The elastic member is bent during the process of engaging or disengaging the driving force receiving unit from the driving unit.

Further, the elastic member is made of an elastic material.

Further, at least one of the engaging portion and the connecting portion is made of an elastic material, and the minimum working torque of the elastic member itself or the anti-twisting strength of the elastic material itself is equal to or greater than the operating torque of the driving unit on the electronic imaging device.

Further, the connecting portion is made of an elastic material.

Further, the engaging portion and the connecting portion are each formed of an elastic material.

Further, the connecting portion is composed of at least a pair of elastic members.

Further, the connecting portion is formed by at least a pair of springs, and the engaging portion includes at least a pair of protrusions, and the pair of protrusions are bent by coils at the same end of the pair of springs.

Further, the engaging portion and the connecting portion are constituted by at least one spring, the engaging portion includes at least a pair of protrusions, and the pair of protrusions are respectively a first protrusion and a second protrusion, and the first protrusion is at least three times by the coil of the spring The bend is formed, and the second protrusion is formed by at least one bend of the coil of the spring.

Further, the elastic member is a spring.

Further, the coil cross section of the spring is non-circular.

Further, the non-a perfect circle is one of an ellipse, a rectangle, or a polygon.

Further, the elastic member is used to transmit torque.

Further, the elastic member is a flexible shaft, and the connecting portion is composed of a flexible shaft.

Further, the flexible shaft has elasticity and the elasticity is a bending property.

Further, the flexible shaft is twisted from a plurality of layers of steel wire.

Further, the twisting directions of the wires of the layers in the multilayer steel wire are the same.

Further, the elastic member is used to transmit torque.

Further, the engaging portion has a pair of protrusions, and the connection shape between the protrusions is a U-shaped structure or a "concave" structure.

A side opening is formed in the "U"-shaped structure or the "concave"-shaped structure, and the opening size of the opening is larger than the front end portion of the cylinder of the driving unit on the electronic imaging device.

Further, the meshing portion of the power receiving unit performs a reciprocating translation operation with respect to the transmitting portion.

Further, the meshing portion of the power receiving unit performs a tilting operation with respect to the transmitting portion.

Further, the elastic member is disposed in the power receiving unit, and the elastic member applies a traction force to return the meshing portion to the original position after performing a translational or tilting motion with respect to the transmitting portion.

Further, the engaging portion is provided with a recessed hole, the connecting portion is provided with a through hole, and the transmitting portion is provided with a through hole through which the elastic member is disposed in the power receiving unit through the through hole, the through hole and the through hole.

Further, the two ends of the elastic member are further provided with a first connection position and a second connection position, the first connection position is connected to the engagement portion, and the second connection position is connected to the transmission portion.

Further, the first connection position is connected to the engagement portion through the fixing member, and the second connection member is connected to the transmission portion through the fixing member.

Further, the first connection position is connected to the engagement portion through a side protrusion in the engagement portion, and the second connection member is connected to the transmission portion through the fixing member.

Further, the elastic member is an elastic tension spring or an elastic traction wire.

In another aspect, the present invention also provides a process cartridge detachably mounted on an electronic image forming apparatus having the power receiving unit as described above.

The power receiving unit and the process cartridge provided by the present invention, after adopting the above-mentioned technical solution, since the connecting portion includes the elastic member, the elastic member may bend when the power receiving unit and the driving unit are in close meshing or disengaging state. Thus, when the power receiving unit of the process cartridge and the driving unit on the electronic imaging device are in contact with each other, the structure between the two is no longer rigid with each other, thereby greatly reducing structural interference or collision when entering or disengaging, and power receiving. The unit avoids or slows the collision force when it comes into contact with the drive unit, minimizing the mutual impact strength between the structures. This solves the technical problem that the existing power receiving unit and the driving unit cause structural wear or breakage due to structural interference or collision, resulting in a reduction in the service life of the process cartridge or the electronic imaging device; and at the same time, the power receiving unit in the process cartridge can be The driving units on the electronic imaging device are in contact with each other and then flattened The power is stably transmitted, and the development quality of the process cartridge during the development process is stabilized.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

Figure 1 is a schematic cross-sectional view showing the structure of a process cartridge;

2 is a schematic view showing the combination of the power receiving unit of the process cartridge and the first baffle;

3 is a schematic view showing a process of engaging a power receiving unit and a driving unit of the process cartridge;

4 is a schematic view showing a process of engaging a power receiving unit and a driving unit of the process cartridge;

5 is a schematic view showing a process of engaging a power receiving unit and a driving unit of the process cartridge;

6 is a schematic structural diagram of a power receiving unit according to Embodiment 1 of the present invention;

7 is a schematic structural diagram of a power receiving unit according to Embodiment 2 of the present invention;

8 is a schematic structural diagram of a power receiving unit according to Embodiment 3 of the present invention;

9 is a schematic structural diagram of a power receiving unit according to Embodiment 4 of the present invention;

Figure 10a is a schematic view showing the overall structure and a cross section of a power receiving unit according to Embodiment 5 of the present invention;

Figure 10b is a schematic structural view of an engaging portion of a power receiving unit according to Embodiment 5 of the present invention;

11 is a schematic diagram showing a connection relationship of components of a power receiving unit according to Embodiment 5 of the present invention;

12 and FIG. 13 are schematic diagrams showing a translational operation of a power receiving unit according to Embodiment 5 of the present invention;

14 and FIG. 15 are schematic diagrams showing the tilting operation of the power receiving unit according to Embodiment 5 of the present invention;

16a and FIG. 16b are schematic diagrams showing contact engagement between a power receiving unit and a driving unit according to Embodiment 5 of the present invention;

17 and FIG. 18 are schematic diagrams showing the separation of the power receiving unit and the driving unit according to Embodiment 5 of the present invention;

19a, 19b, and 19c are schematic views of the meshing portion of the power receiving unit according to Embodiment 6 of the present invention;

FIG. 20 is a schematic diagram showing the connection relationship of the components of the power receiving unit according to Embodiment 6 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiments will be described below based on the drawings.

(processing box)

As shown in FIG. 1 and FIG. 2, it is a schematic structural view of a process cartridge C in an electronic imaging device (not shown). The process cartridge C generally includes a toner frame 90 in which the toner 30 is stored, a powder control unit 20 is disposed on the surface of the toner frame 90, and a first baffle 80 is disposed at both ends of the toner frame 90. And the second shutter 70, the developing unit 10 is rotatably mounted on the toner frame 90 by the first shutter 80 and the second shutter 70. In general, the power receiving unit 100 is disposed at one end of the process cartridge C in the axial direction of the developing unit 10, and the power receiving unit 100 is rotatably disposed between the first shutter 80 and the toner frame 90.

(power receiving unit)

As shown in FIG. 2, the power receiving unit 100 of the process cartridge C includes an engaging portion 110, a connecting portion 120, and a transmitting portion 150. The transmission portion 150 is rotatably disposed at one end of the toner frame 90, and the transmission portion 150 is provided with a gear 15 for transmitting power to the developing unit 10; the engaging portion 110 passes through the port 85 of the first shutter 80 outward Extendingly, the engaging portion 110 is constituted by at least a pair of protrusions 111 or by a concave hole having a non-circular cross section; the connecting portion 120 is for connecting the engaging portion 110 and the transmitting portion 150.

The power receiving unit 100 transmits the rotational driving force to the gear 15 of the developing unit 10 in the process cartridge C by contact engagement with the rotational force driving unit 500 in the electronic imaging device, and finally drives the developing unit 10 to participate in the electronic imaging device. Development work.

3 to 5, a schematic diagram of the meshing operation when the power receiving unit 100 of the process cartridge C comes into contact with the driving unit 500 in the electronic image forming apparatus. According to the structure of different electronic imaging devices, the power receiving unit 100 and the driving unit 500 have the following three directions in the process of contact engagement:

In the direction one, during the mutual contact engagement between the two, the driving unit 500 moves substantially in the vertical direction Y1 with the axial direction of the developing unit 10 toward the power receiving unit 100, and then comes into contact with the power receiving unit 100 to transmit the rotational driving force to Power receiving unit 100. When the two are separated, the driving unit 500 continues to move in the Y2 direction, and the power receiving unit 100 is separated from the driving unit 500.

In the second direction, during the mutual contact engagement between the two, the driving unit 500 moves substantially in the vertical direction Y1 with the axial direction of the developing unit 10 toward the power receiving unit 100, and then comes into contact with the power receiving unit 100 to transmit the rotational driving force to Power receiving unit 100. When the two are separated, the driving unit 500 is reversely moved in the Y1 direction, and the power receiving unit 100 is separated from the driving unit 500.

In the third direction, during the mutual contact engagement between the two, the driving unit 500 moves toward the power receiving unit 100 substantially in the direction X1 (substantially parallel to the axis L3 of the developing unit 10), and then comes into contact with the power receiving unit 100 to rotate the driving force. It is transmitted to the power receiving unit 100. When the two are separated, the driving unit 500 is reversely moved in the X1 direction, and the power receiving unit 100 is separated from the driving unit 500.

In combination with the above three directions, as shown in FIG. 5, since the structures between the power receiving unit 100 and the driving unit 500 are mutually rigid, the driving unit 500 receives power from the X1 direction or the Y1 direction toward the power during the contact engagement. When the unit 100 is close to the meshing, the driving column 510 of the driving unit 500 has a certain probability of structural collision or structural interference (dashed line position) with the engaging portion 110 or the protrusion 111 on the power receiving unit 100, and then meshes with each other, that is, The drive post 510 of the drive unit 500 abuts against the projection 111 of the engaging portion 110, and both of them can transmit the driving force into the process cartridge C.

Embodiment 1

FIG. 6 is a schematic structural diagram of the power receiving unit 100 in the process cartridge C provided in the first embodiment. The power receiving unit includes an engaging portion 110, a connecting portion 120, and a transmitting portion 150.

The connecting portion 120 includes an elastic member, and the elastic member is made of an elastic material. In the embodiment, the elastic member is preferably a spring.

The engaging portion 110 is made of metal or plastic, and the engaging portion 110 is composed of at least one pair of protrusions 111 or The concave portion 113 of the circular cross section is formed, and the engaging portion 110 can be attached to the connecting portion 120 by welding, gluing, snapping, fitting, or the like.

Embodiment 2

FIG. 7 is a schematic structural view of the power receiving unit 200 in the process cartridge C provided in the second embodiment. The power receiving unit 200 includes an engaging portion 210, a connecting portion 220, and a transmitting portion 250.

The connecting portion 220 is composed of at least one pair of elastic materials. In this embodiment, two springs are preferably combined. The engaging portion 210 is located at one end of the connecting portion 220 and protrudes outward along the axis of the connecting portion 220. The engaging portion 210 includes at least A pair of protrusions 211. More specifically, the protrusion 211 is formed by bending a coil at one end of the spring.

Embodiment 3

FIG. 8 is a schematic structural view of the power receiving unit 300 in the process cartridge C provided in the third embodiment. The power receiving unit 300 includes an engaging portion 310, a connecting portion 320, and a transmitting portion (not shown, refer to the transmitting

portions

150, 250 in the first and second embodiments).

The connecting portion 320 and the engaging portion 310 are formed by at least one spring. The engaging portion 310 is located at one end of the connecting portion 320 and protrudes outward along the axis of the connecting portion 320. The engaging portion 310 includes at least a pair of protrusions (310a, 310b). The first protrusion 310a of the pair of protrusions is formed by at least three times of bending of the spring coil, and the second protrusion is formed by at least one bending of the spring coil. The first protrusion 310a and the second protrusion 310b are symmetrically disposed with respect to an axis of the connecting portion 320.

In the first, second and third embodiments described above, a part of the connecting portion (120, 220, 320) is made of at least an elastic material. For the best effect, the above embodiment preferably uses a spring because the spring has a certain working torque. (It can be twisted along its own axis). Here, in order to ensure that the driving unit 500 transmits the rotational driving force to the process cartridge C more stably without causing the spring to undergo its own twist in the process of transmitting the rotational power. At the same time, the minimum operating torque (value) of the spring itself should be equal to or greater than the operating torque (value) of the drive unit 500 in the electronic imaging device. For example, the operating torque of the driving unit in the small-sized electronic imaging device is about 5 kgf.cm, and the operating torque of the driving unit in the large-sized electronic imaging device is about 10 kgf.cm. Therefore, in combination with the above, it is necessary to consider the value of the anti-twist strength of the spring when designing the spring to be equal to or greater than the operating torque value of the driving unit 500 in the electronic imaging apparatus.

In addition, in order to ensure the structural strength of the spring, the coil section of the spring should be a non-circular structure, and the coil section of the spring can be a rectangular, elliptical or polygonal structure, such as the coil section in FIGS. 6 to 8 (125, 225, 325).

In addition, depending on the structural characteristics of the spring itself, the spring used should have a certain amount of axial elasticity and can be bent in any direction.

Embodiment 4

Further, the elastic material in the connecting portion made of the elastic material described above may also be a structure of the flexible shaft described below.

As shown in FIG. 9, a schematic structural view of the power receiving unit 400 in the process cartridge C provided in the fourth embodiment is shown. The power receiving unit 400 includes an engaging portion 410, a connecting portion 420, and a transmitting portion (not shown, refer to the transmitting

portions

150, 250 in the first and second embodiments).

At least a part of the connecting portion 420 is a flexible shaft, and the engaging portion 410 is located at one end of the connecting portion 420 and protrudes outward along the axis of the connecting portion 420. The engaging portion 410 includes at least one pair of protrusions (the same as the first embodiment) The structure is the same and will not be described here.) The flexible shaft is formed by twisting two or more layers of steel wire, and the number of layers of the required steel wire and the thickness of the steel wire can be specifically designed according to actual requirements for the strength of the flexible shaft. As shown in 401 of FIG. 9, a partial cross-sectional view of one of the flexible shafts, the view shows that the flexible shaft is twisted by four layers of steel wire; and 402 of FIG. 9 shows the twisting of the inner wire of the flexible shaft. In the direction, the twisting direction of each layer of the flexible shaft should be the same, that is, the same as left-handed or right-handed. The flexible shaft can withstand a certain torque and can be used to transmit power; the flexible shaft also has a certain flexibility, and can be bent by an external force, that is, when the driving head of the process cartridge is engaged with the driving head of the electronic imaging device. Or in the process of disengaging, the driving head of the electronic imaging device acts on the processing box driving head to bend the flexible shaft, so that the driving head can still engage or disengage in the case of mutual interference. .

Meanwhile, in the first, second, third and fourth embodiments described above, the connecting portion may be attached to the transmitting portion by welding, gluing, snapping, tight fitting, etc., and the surface of the transmitting portion is provided with a gear for transmitting power.

Embodiment 5

(power receiving unit 600)

Figure 10a is a schematic view showing the overall structure and a cross-section of a power receiving unit according to a fifth embodiment of the present invention; Figure 10b is a schematic structural view of a meshing portion of a power receiving unit according to a fifth embodiment of the present invention; Schematic diagram of the connection relationship of the components of the power receiving unit. As shown in FIG. 10a to FIG. 11, one end of the engaging portion 610 is provided with a pair of outwardly extending protrusions 611, and the other end is provided with a slider 613 and a concave hole 614. The engaging portion 610 is further provided with a concave hole. Through positioning holes 615. The connecting portion 630 includes a through port 635 and a first sliding slot 631 and a second sliding slot 632. The first sliding slot 631 and the second sliding slot 632 have a slot direction perpendicular to each other. The resilient member 660 includes a first connection location 661 and a second connection location 662. The transmitting portion 650 includes a slider 652, a through hole 655, and a limiting frame 651. The center line L1a1 of the projection 611 is inclined with respect to the rotation axis L1a of the engaging portion 610, and an angle R1 exists between the center line L1a1 and the rotation axis L1a, and the angle R1 is preferably 3° to 25°. In addition, the connection shape between the pair of protrusions 611 on the engaging portion 610 is substantially a "U"-shaped structure or a "concave"-shaped structure, and a side opening 611a is formed in the "U"-shaped structure or the "concave"-shaped structure ( The dotted line portion), as shown in Fig. 16b, is projected in the side direction of the power receiving unit 600, and the opening size of the side opening 611a thereof is larger than the front end portion 500a1 (dashed line portion) of the cylinder 500a of the driving unit 500.

The assembly position of each of the above components in the power receiving unit 600 is such that the engaging portion 610 and the connecting portion 630 are engaged, and the slider 613 of the engaging portion 610 is placed in the first sliding slot 631 of the connecting portion 630, and the connecting portion 630 is The second sliding slot 632 is placed on the slider 652 of the transmitting portion 650, and then passes through the through hole 655 of the transmitting portion 650 and the opening 635 of the connecting portion 630 into the engaging portion 610 using an elastic member 660, the first of the elastic members 660 The connecting position 661 extends into the recessed hole 614 of the engaging portion 610, and the first connecting portion 661 is connected to the engaging portion 610 through the fixing hole 691 and the first connecting portion 661, at one end of the transmitting portion 650. The second connection position 662 is also fixed to the limiting frame 651 by the fixing member 692.

According to the combination relationship of the components in the fifth embodiment, the meshing portion 610 of the power receiving unit 600 can perform the following actions:

Action 1: the engaging portion 610 can perform a reciprocating translation motion with respect to the transmitting portion;

12 and FIG. 13 are schematic diagrams showing the translational operation of the power receiving unit according to Embodiment 5 of the present invention. As shown in FIGS. 12 and 13, the engagement of the slider 613 with the first chute 631 and the engagement of the second chute 632 with the slider 652 enable the entire engaging portion 610 to be formed by the direction X and the direction Y. A limited reciprocating translational movement is made in the transmission portion 650 in the plane, and the maximum translational distance of the engaging portion 610 is determined by the gap between the engaging portion 610 or the outer wall of the connecting portion 630 to the inner wall of the transmitting portion 650.

Action 2: the engaging portion 610 is tiltable with respect to the transmitting portion;

14 and FIG. 15 are schematic diagrams showing the tilting operation of the power receiving unit according to Embodiment 5 of the present invention. As shown in FIGS. 14 and 15, a certain amount of clearance is provided between the slider 613 and the first chute 631 and between the second chute 632 and the slider 652. Therefore, the engaging portion 610 can be inclined with respect to the connecting portion 630, and the connecting portion 630 can also be inclined with respect to the transmitting portion 650 (ie, the rotation axis L1a of the engaging portion 610 is inclined with respect to the rotation axis L1b of the connecting portion 630, and the connecting portion 630 The rotation axis L1b is also inclined with respect to the rotation axis L1c of the transmission portion 650).

In addition, the elastic member 660 built in the power receiving unit 600 exerts mutual traction between the fixing member 691 in the engaging portion 610 and the fixing member 692 on the transmitting portion 650, so that the engaging portion 610 always returns when the above action is not performed. In the original position before the above operation, the engaging portion 610 and the connecting portion 630 and the transmitting portion 650 are substantially center-aligned, and the axes L1a and L1b and L1c are substantially coaxially aligned.

16a and 16b are schematic diagrams showing the contact engagement between the power receiving unit and the driving unit according to Embodiment 5 of the present invention. 17 and FIG. 18 are schematic diagrams showing the separation of the power receiving unit and the driving unit according to Embodiment 5 of the present invention. As shown in FIGS. 15 to 18, a schematic diagram of an operation process when the drive unit 500 is in contact with the power receiving unit 600 and when the two are separated.

As shown in FIGS. 15 to 16b, the driving unit 500 is moved toward the power receiving unit 600 in the direction Y1, and the driving unit 500 is brought into contact with the power receiving unit 600 due to the structural arrangement of the projections 611 of the engaging portion 610. The cylinder 500a of the drive unit 500 is completely prevented from coming into contact with the power receiving unit 600, and the front end portion 500a1 of the cylindrical body 500a is moved into the opening 611a formed by the pair of projections 611. When the driving unit 500 rotates, its driving column 510 abuts against the protrusion 611 to transmit the driving force of the rotation to the power receiving unit 600, and the power receiving unit 600 transmits the driving force to the process cartridge C again.

In addition, even if the driving column 510 has a certain probability of interference with the protrusion 611 during the contact, the arrangement of the chute (631/632) can cause the protrusion 611 to be pressed (to the driving column 510) when its engaging portion 610 The translational motion is generated as a whole to avoid further structural interference or hard collision with the driving column 510. When the driving unit 500 rotates, the driving column 510 with which it rotates is "staggered" into contact with the protrusion 611, and the traction force of the elastic member 660 is made. The engaging portion 610 is returned to the original position, such that the opening 611a The front end portion 500a1 of the cylindrical body 500a can be smoothly surrounded, and the drive post 510 smoothly abuts against the projection 611 to transmit a driving force.

As shown in FIG. 17 and FIG. 18, when the driving unit 500 is moved away from the power receiving unit 600 in the direction Y2 after the completion of the power transmission, since the driving column 510 and the protrusion 611 are still in the meshing state, at the driving unit 500 When the driving column 510 is moved, the protrusion 611 is dragged to tilt the engaging portion 610 as a whole, and finally the driving unit 500 can be smoothly separated from the power receiving unit 600 when the engaging portion 610 is inclined to a certain angle. The engaging portion 610 is also returned to the original position due to the traction force of the elastic member 660.

Embodiment 6

In the sixth embodiment, the structure of the power receiving unit 600 is basically the same as that in the fifth embodiment, and the repeated partial structure is not repeated here. The following structure is different from that in the fifth embodiment:

19a, 19b, and 19c are schematic views of the meshing portion of the power receiving unit according to the sixth embodiment of the present invention. As shown in Figs. 19a to 19c, a side projection 616 is provided in the recessed hole 614 of the engaging portion 610 to replace the function of the fixing member 691, so that the mounting of the fixing member 691 can be eliminated.

FIG. 20 is a schematic diagram showing the connection relationship of the components of the power receiving unit according to Embodiment 6 of the present invention. As shown in FIG. 20, a limiting protrusion 613a is disposed on the slider 613; a limiting protrusion 631a is disposed on the first sliding slot 631, and a limiting protrusion 632a is disposed on the second sliding slot 632.

In addition, the power receiving unit 600 of the second embodiment further includes a base 640. The upper surface of the base 640 is provided with a slider 641 and a limiting protrusion 641a disposed on the slider 641. The lower surface of the base 640 has a positioning post (not Shown) there is also a through hole 645 in the base 640. At the same time, the inner bottom surface of the transmitting portion 650 is further provided with a positioning hole 656 which is assembled with the positioning post of the base 640. Referring to the combination relationship in the power receiving unit 600 of the first embodiment, the difference is that the elastic member 660 also needs to pass through the through hole 645 of the base 640 and the first connecting position 661 and the one side of the engaging portion 610 are raised 616. Pick up.

By the arrangement of the limiting projections (613a/631a/632a/641a) in the above-described sixth embodiment, the maximum inclination range of the engaging portion 610 and the connecting portion 630 can be restricted (refer to FIG. 14), and between the limiting projections Abutting each other also prevents the components from coming apart from each other.

In addition, in the above-described fifth and sixth embodiments, the power receiving unit 600 may be installed in a power unit such as a photosensitive unit, a developing unit, a powder feeding unit, and a stirring unit.

Further, in the fifth and sixth embodiments described above, the elastic member 660 may be an elastic tension spring or an elastic pull wire.

The U-shaped driving heads of the above-described Embodiments 5 and 6 can be applied to the remaining embodiments described above.

In various embodiments of the present invention, the power receiving unit (100, 200, 300, 400, 600) can also be mounted in a rotary power transmitting mechanism such as a photosensitive unit, a developing unit, a powder feeding unit, and a stirring unit. The above embodiment includes the

elastic members

120, 220, 320, 420, 660, etc., in which the process cartridge of each embodiment of the present invention is installed into the electronic imaging device, or during the process of disassembling the process cartridge electronic imaging device, when the driving unit 500 When the meshing is performed from the X1 direction or the Y1 direction toward the power receiving unit 100, the driving unit 500 and the power receiving unit 100 are already in contact with each other, but the two are not fully engaged, and the elastic member is bent to allow power receiving. The rigid connection between the engaging portion 110 or the projection 111 on the unit 100 and the driving unit 500 becomes a flexible connection; and when the driving unit 500 is disengaged from the power receiving unit 100, similarly, the driving unit 500 and the power receiving unit 100 Not completely disengaged, but the two are still in contact state, when the spring is also bent, so that the structure between the driving unit 500 and the power receiving unit 100 is no longer mutually rigid, so that the driving unit 500 and the power receiving During the engagement or disengagement between the units 100, the elastic members are bent, so that the two can still engage in the mutual interference. Or disengaged. When the driving unit 500 and the power receiving unit 100 are in a fully meshed transmission state or a completely disengaged state, the two are fully engaged or not in contact at all, so that the spring returns to the original unbent state. The engaging portion on the power receiving unit is engaged or disengaged from the driving unit in the electronic imaging device, and the elastic member is bent to drive the engagement and disengagement of the receiving unit and the driving unit; when the receiving unit and the driving unit are driven The elastic member is capable of transmitting torque to the rotary power transmitting mechanism when engaged.

According to the present invention, it is possible to obtain a power receiving unit that avoids or slows structural rigid contact between the power receiving unit of the process cartridge and the driving unit of the electronic image forming apparatus while being in contact with each other, and the driving unit engages with the power receiving unit It is also easier to separate the two when the separation is performed later, so that the power receiving unit or the driving unit is less likely to cause structural wear or breakage due to structural interference or collision. The structural strength life of the power receiving unit or the driving unit can be extended, thereby extending the service life of the process cartridge or the electronic imaging device.

Another object of the present invention is to provide a process cartridge for a power receiving unit having the above functions, which enables a power receiving unit in a process cartridge to be coupled to a driving unit on an electronic image forming apparatus The power is transmitted smoothly after the engagement, and the development quality of the process cartridge during the development process is stabilized.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A power receiving unit for detachably engaging a driving unit on an electronic imaging device and receiving power from the driving unit, the power receiving unit including an engaging portion, a connecting portion, and a transmitting portion;

The engaging portion is for engaging with a driving unit on the electronic imaging device to receive a driving force of rotation;

The transmitting portion is configured to transmit the driving force of the rotation into the process cartridge;

The connecting portion is respectively connected to the engaging portion and the transmitting portion;

The connecting portion includes an elastic member, and the elastic member is respectively connected to the engaging portion and the transmitting portion;

The elastic member is bent during the engagement or disengagement of the power receiving unit and the driving unit.
A power receiving unit according to claim 1, wherein said elastic member is made of an elastic material.
The power receiving unit according to claim 2, wherein at least one of the engaging portion and the connecting portion is made of an elastic material, the minimum working torque of the elastic member itself or the elastic material itself The torsional strength is equal to or greater than the operating torque of the drive unit on the electronic imaging device.
The power receiving unit according to claim 3, wherein the connecting portion is made of an elastic material.
The power receiving unit according to claim 3, wherein said engaging portion and said connecting portion are each formed of an elastic material.
The power receiving unit according to claim 3, wherein said connecting portion is constituted by at least a pair of elastic members.
A power receiving unit according to claim 6, wherein said connecting portion is constituted by at least a pair of springs, said engaging portion including at least a pair of projections, said pair of projections being located at said pair of springs The coils at the same end are bent.
A power receiving unit according to claim 5, wherein said engaging portion and said connecting portion are constituted by at least one spring, said engaging portion comprising at least a pair of projections, said pair of projections being respectively first convex And a second protrusion, the first protrusion being at least by a coil of the spring Formed by three bends, the second protrusion being formed by at least one bend of the coil of the spring.
The power receiving unit according to claim 3, wherein the elastic member is a spring.
The power receiving unit according to claim 9, wherein the coil cross section of the spring is a non-circular circle.
The power receiving unit according to claim 10, wherein the non-circular circle is one of an ellipse, a rectangle, or a polygon.
The power receiving unit according to claim 2, wherein the elastic member is for transmitting torque.
The power receiving unit according to claim 1, wherein the elastic member is a flexible shaft, and the connecting portion is constituted by a flexible shaft.
The power receiving unit according to claim 13, wherein said flexible shaft has elasticity and said elasticity is a bending characteristic.
The power receiving unit according to claim 14, wherein said flexible shaft is twisted from a plurality of layers of steel wires.
The power receiving unit according to claim 15, wherein the winding directions of the respective layers of the plurality of wires are the same.
A power receiving unit according to claim 13, wherein said elastic member is for transmitting torque.
A power receiving unit according to claim 1, wherein

The engaging portion has a pair of protrusions, and the connection shape between the protrusions is a U-shaped structure or a "concave" structure.

A side opening is formed in the "U" shaped structure or "concave" shaped structure, the opening having an opening size larger than a front end portion of a cylinder of the driving unit on the electronic imaging device.
The power receiving unit according to claim 18, wherein the engaging portion of the power receiving unit performs a reciprocating translational motion with respect to the transmitting portion.
The power receiving unit according to claim 18, wherein the engaging portion of the power receiving unit performs a tilting operation with respect to the transmitting portion.
A power receiving unit according to claim 19, wherein said elasticity The member is disposed in the power receiving unit, and the elastic member applies a traction force to return the meshing portion to the original position after performing a translational or tilting motion with respect to the transmitting portion.
The power receiving unit according to claim 19, wherein the engaging portion is provided with a recessed hole, the connecting portion is provided with a through hole, and the transmitting portion is provided with a through hole through which the elastic member passes The recessed hole, the through port, and the through hole are disposed in the power receiving unit.
The power receiving unit according to claim 22, wherein both ends of the elastic member are further provided with a first connection position and a second connection position, and the first connection position is connected to the engagement portion, The second connection position is connected to the transmission portion.
The power receiving unit according to claim 21, wherein said first connection position is coupled to said engaging portion by a fixing member, and said second connecting member is coupled to said transmitting portion by a fixing member.
A power receiving unit according to claim 21, wherein said first connecting portion is coupled to said engaging portion by a side projection in said engaging portion, said second connecting member passing through said fixing member and said transmitting portion connection.
The power receiving unit according to claim 19, wherein the elastic member is an elastic tension spring or an elastic pull wire.
A process cartridge, the process cartridge being detachably mounted on an electronic image forming apparatus, characterized in that the process cartridge has the power receiving unit according to any one of claims 1 to 24.