CN220208092U - Developing device - Google Patents

Abstract

The utility model discloses a developing device, comprising: a cartridge for storing a developer, the cartridge having a first end and a second end in a first direction and a third end and a fourth end in a second direction; a developing roller rotatably supported at a third end of the cartridge body, an axis of the developing roller extending in a first direction; a transmission assembly for receiving and transmitting a driving force of the image forming apparatus; the detected component comprises a driving component and a detected piece, the detected piece is arranged on the box body in a movable way relative to the box body, and the detected piece comprises a driven end and a detected end; the driving assembly receives the driving force of the transmission assembly and acts with the driven end to enable the detected piece to move, and then the detected end triggers the detected piece in the image forming device. The detected component of the developing device has the advantages of simple structure, convenient assembly and stable operation, and is beneficial to miniaturization of the developing device.

Description

a developing device

Technical field

The utility model relates to the field of electronic imaging technology, and in particular to a developing device.

Background technique

The developing device is a detachable part widely used in image forming devices. After the printing consumables of the image forming device are used up, a new developing device needs to be replaced. In order to allow the image forming device to detect whether the developing device is correctly installed on the drum assembly, and to detect information such as whether the developing device is old or new, a component to be detected is provided on the developing device, and the component to be detected can be detected by touching the detection button inside the image forming device. The component allows the image forming device to detect whether the developing device is installed correctly, and the detected component can also be preset with different number of touches, touch speed, and duration of each touch to enable the image forming device to detect a variety of information ( Such as old and new, model, capacity, etc.), but the complex touching action of the detected part requires a large number of transmission structures (for example, multiple gears are stacked for transmission, occupying a large space), which adds to the small size of the developing device. ation has brought obstacles.

Utility model content

According to one aspect of the present invention, a developing device is provided, which is detachably installed on an image forming device, including:

a box body for storing developer, the box body having a first end and a second end in a first direction, and a third end and a fourth end in a second direction;

a developing roller, rotatably supported at the third end of the box body, the axis of the developing roller extending along the first direction;

a transmission assembly for receiving and transmitting the driving force of the image forming device;

The component to be detected includes a driving component and a component to be detected. The component to be detected is disposed in the box body movably relative to the box body. The component to be detected includes a driven end and a detected end; the driving component receives the detected component. The driving force of the transmission component moves and interacts with the driven end to move the detected component, thereby causing the detected component to trigger the detection component in the image forming device.

In some embodiments, the driving assembly includes a sliding member slidably disposed on the box body. The sliding member includes at least one driving protrusion. When the sliding member moves, the driving protrusion can push the slave. The moving end moves the part being inspected.

In some embodiments, the driving assembly further includes a first transmission wheel, a second transmission wheel and a connecting rod set;

The first transmission wheel receives the driving force of the transmission component to rotate, and the connecting rod group connects the first transmission wheel and the second transmission wheel, so that when the first transmission wheel rotates, the connecting rod group drives the second transmission wheel. The drive wheel rotates.

In some embodiments, one of the second transmission wheel and the sliding member is provided with a transmission convex portion, and the other is provided with a transmission concave portion that matches the transmission convex portion;

When the second transmission wheel rotates, the transmission convex portion is embedded in the transmission concave portion, thereby driving the sliding member to move.

In some embodiments, the connecting rod group includes a plurality of first connecting rods, the first connecting rod has a first transmission end and a second transmission end, and the axis of the first transmission end and the axis of the second transmission end are different. overlapping;

The first transmission end is arranged offset from the center of the circle of the first transmission wheel, and multiple first transmission ends are located on the same circle;

The second transmission end is arranged deviated from the center of the circle of the second transmission wheel, and a plurality of the second transmission ends are located on the same circumference.

In some embodiments, the drive assembly includes a rotating member, a slider, and a second link;

The rotating member receives the driving force of the transmission assembly to rotate;

The slider is slidably disposed on the box body, and in the sliding direction of the slider, the projection of the slider and the sliding member at least partially overlaps;

The second connecting rod has a first connecting end and a second connecting end. The first connecting end is rotatably connected to the eccentric position of the rotating member; the second connecting end is rotatably connected to the sliding member. piece;

When the rotating member rotates, the second connecting rod drives the sliding block to slide, thereby pushing the sliding member to move.

In some embodiments, both the sliding member and the sliding block move in the second direction;

The sliding member has a pushed protrusion, the pushed protrusion at least partially coincides with the projection of the slider in the second direction, and the pushed protrusion is closer to the slider in the second direction than to the slider. Third end.

In some embodiments, the driving assembly includes a rotation transmission member and a translation transmission member. The rotation transmission member receives the driving force of the transmission assembly for rotation. The rotation transmission member has a threaded shaft, and the translation transmission member is connected with the translation transmission member. The threaded shaft is threaded, and when the rotary transmission member rotates, the translation transmission member is driven to move by the thread, and then the driven end is pushed to rotate the detected component.

In some embodiments, the translation transmission member includes a threaded sleeve and a limiting part, and the threaded sleeve is threadedly connected to the threaded shaft;

One end of the limiting part is connected to the limiting part, and a limiting hole is provided on the limiting part;

The box body is provided with a limiting column extending along the first direction, and the limiting column is inserted into the limiting hole, so that when the translation transmission member is driven by the thread of the rotation transmission member, it moves along the limiting column at the first position. Move in one direction.

In some embodiments, the translation transmission member includes a contact portion, the contact portion is connected to the other end of the limiting portion, and the contact portion is provided with a contact protrusion;

A driven protrusion is provided on the driven end of the detected piece, and the contact protrusion coincides with the projection of the driven protrusion in a third direction intersecting the first direction and the second direction;

When the translation transmission member is driven to move in the first direction, the contact protrusion pushes the driven protrusion to rotate the detection member.

In some embodiments, the detected part is rotatably arranged on the box body, and the rotation axis of the detected part is located between the driven end and the detected end in the first direction;

The rotation axis of the detected part extends along the second direction.

In some embodiments, the projection of the detected end in the first direction is separated from the projection of the developing roller.

Beneficial effects of the present invention: The detected component of the developing device of the present invention has a simple structure, is easy to assemble, and operates stably, which is beneficial to the miniaturization of the developing device.

Description of drawings

Figure 1 is a front view of the developing device in Embodiment 1 of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of the developing device in Embodiment 1 of the present invention;

Figure 3 is an exploded structural diagram of the first end of the box in Embodiment 1 of the present utility model;

Figure 4 is a schematic three-dimensional structural diagram of the first end of the box in Embodiment 1 of the present utility model;

Figure 5 is a right view of the first end of the box body in Embodiment 1 of the present utility model;

Figure 6 is an exploded structural diagram of the second end of the box in Embodiment 1 of the present invention;

Figure 7 is a schematic three-dimensional structural diagram of the second end of the box body in Embodiment 1 of the present utility model;

Figure 8 is a schematic three-dimensional structural diagram of the sliding member in Embodiment 1 of the present utility model;

Figure 9 is a schematic three-dimensional structural diagram of the first transmission wheel, the second transmission wheel and the connecting rod group in Embodiment 1 of the present invention;

Figure 10 is a schematic three-dimensional structural diagram of the first transmission wheel, the second transmission wheel and the connecting rod group from another angle in Embodiment 1 of the present utility model;

Figure 11 is a schematic structural diagram of the detected component in the first state in Embodiment 1 of the present invention;

Figure 12 is a schematic structural diagram of the detected part in the second state in Embodiment 1 of the present invention;

Figure 13 is a schematic three-dimensional structural diagram of the second end of the box in Embodiment 2 of the present utility model;

Figure 14 is an exploded three-dimensional structural diagram of the second end of the box in Embodiment 2 of the present invention;

Figure 15 is a partial enlarged structural diagram of position A in Figure 14;

Figure 16 is a schematic three-dimensional structural diagram of the second end of the box when the detected component is in the first state in Embodiment 2 of the present invention;

Figure 17 is a schematic three-dimensional structural diagram of the second end of the box when the detected part is in the second state in Embodiment 2 of the present invention;

Figure 18 is a schematic three-dimensional structural diagram of the sliding member in the second embodiment of the present utility model;

Figure 19 is a schematic three-dimensional structural diagram of the second end of the box after removing the second protective cover in Embodiment 3 of the present invention;

Figure 20 is a schematic three-dimensional structural diagram of the component to be detected in Embodiment 3 of the present utility model;

Figure 21 is a schematic three-dimensional structural diagram of the translation transmission member in the third embodiment of the present utility model;

Figure 22 is a schematic three-dimensional structural diagram of the rotating transmission member in the third embodiment of the present invention.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

It should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In the present utility model, unless otherwise explicitly stipulated and limited, the terms "installation", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a detachable connection. Integrated; it can be mechanically connected, electrically connected or communicable with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interactive relationship between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the above description, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" or the like means that specific features, structures, or structures are described in connection with the embodiment or example. , materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Embodiment 1

As shown in Figures 1 to 12, this embodiment discloses a developing device. The developing device can be detachably installed on the drum assembly in the image forming device. The developing device includes a box body 1, a developing assembly, and a transmission assembly. , identification component, detected component, power supply component, first protective cover 111 and second protective cover 121 .

In the following description of directions, when viewed perpendicular to the direction of the paper in the figure, the left side of the paper in the figure is left, the right side of the paper in the figure is right, the upper side of the paper in the figure is up, and the paper in the figure is up The lower side is the lower side, the near side on the paper in the picture is the front, and the far side on the paper in the picture is the back. The left and right direction is an embodiment of the first direction, the front and rear direction is an embodiment of the second direction, and the up and down direction is an embodiment of the third direction.

As shown in FIGS. 1 and 2 , the box body 1 has an accommodation cavity for accommodating the developer. The box body 1 has a first end 11 and a second end 12 that are oppositely arranged in the first direction. The box body 1 is in the first direction. It has a third end 13 and a fourth end 14 arranged oppositely in two directions, and the box body 1 has a fifth end 15 and a sixth end 16 arranged oppositely in the third direction. The box body 1 is provided with a powder outlet, which is located at the third end 13 . The box body 1 is provided with a handle, which is located at the fourth end 14 .

As shown in Figures 1 and 2, the developing assembly includes a developing roller 131, a powder feeding roller, and a stirring frame. The developing roller 131, the powder feeding roller, and the stirring frame are all rotatably installed between the first end 11 and the second end 12. inside the containing cavity. The rotation axes of the developing roller 131, the powder feeding roller, and the stirring frame all extend along the first direction. The developing roller 131 is arranged at the powder outlet. The powder feeding roller is disposed immediately adjacent to the developing roller 131 . The powder feeding roller is closer to the fourth end 14 of the box body 1 than the developing roller 131 . The stirring rack is used to stir the developer in the housing chamber to charge the developer and prevent the developer from agglomerating.

As shown in FIGS. 3 to 5 , the transmission assembly is provided at the first end 11 . The transmission assembly includes a driving part rotatably installed on the first end 11 of the box 1 . The rotation axis of the driving part is parallel to the first direction. The driving part includes a coaxially integrated first driving gear 22, a second driving gear 23, and a power receiving part 21. The second driving gear 23 is located between the first driving gear 22 and the power receiving part 21 in the first direction. A driving gear 22 is closer to the first end 11 of the box body 1 than the power receiving portion 21 in the first direction. The power receiving part 21 is used to couple with the power output shaft on the image forming device to receive the power output by the image forming device.

As shown in Figures 3 to 5, the transmission assembly also includes a developing roller gear 24, a powder feeding roller gear 25, a stirring gear 26, a first idler gear 27, and a second idler gear 28. The developing roller gear 24 is coaxially fixed and installed on the developing device. The roller 131 is close to one end of the first end 11 of the box body 1 . The powder feeding roller gear 25 is coaxially and fixedly installed on an end of the powder feeding roller close to the first end 11 of the box body 1 . The stirring gear 26 is coaxially and fixedly installed on one end of the stirring frame close to the first end 11 of the box 1 . The central axes of the first idler gear 27 and the second idler gear 28 are parallel to the first direction. The first idler wheel 27 and the second idler wheel 28 are rotatably mounted on the first end 11 of the box body 1 . The central axes of the first idler gear 27 and the second idler gear 28 are located between the central axis of the stirring gear 26 and the central axis of the driving part in the second direction.

As shown in FIGS. 3 to 5 , the developing roller gear 24 and the powder feeding roller gear 25 mesh with the first driving gear 22 . The first idler gear 27 meshes with the second driving gear 23 , the second idler gear 28 meshes with the first idler gear 27 , and the stirring gear 26 meshes with the second idler gear 28 . The meshing can be direct meshing or indirect meshing.

As shown in FIGS. 3 to 5 , the rotation axis of the driving part is closer to the fifth end 15 and the fourth end 14 of the box 1 than the rotation axis of the developing roller 131 , and the rotation axis of the driving part is closer to the powder feeding roller. The rotation axis of the driving part is closer to the fifth end 15 and the fourth end 14 of the box 1 , and the rotation axis of the driving part is closer to the third end 13 and the fifth end 15 of the box 1 than the rotation axis of the mixing rack.

As shown in Figures 6 and 7, the component to be detected includes a component to be detected 4 and a driving component. The driving component receives the power from the driving part and drives the component to be detected 4 to move between the first state and the second state. The component to be detected 4 is located at The second end 12 of the box body 1 has a detected end 41 on the detected piece 4, and an opening is opened on the second protective cover 121 for the detected end 41 to extend. In the first state, the detected end 41 is not in contact with the detection member in the image forming apparatus. In the second state, the detected end 41 touches the detection piece in the image forming device, so that the developing device is detected by the image forming device.

As shown in FIGS. 6 and 7 , in the second direction, the detected end 41 is closer to the fourth end 14 of the box body 1 than the rotation axis of the developing roller 131 and the powder feeding roller. In the second direction, the detected end 41 is closer to the third end 13 of the box 1 than the rotation axis of the mixing rack. The projection of the detected end 41 in the first direction is separated from the projection of the developing roller 131 , that is, there is no overlap between the two projections in the first direction.

As shown in Figures 6 and 7, the second end 12 of the box body 1 is detachably and fixedly installed with a support frame 122. The support frame 122 is provided with a support hole for the end of the developing roller 131 and the powder feeding roller to be inserted. The support frame 122 A support seat 1221 is integrally formed on the side away from the box body 1 in the first direction. The component to be detected 4 is rotatably mounted on the support seat 1221 and the rotation axis of the component to be detected 4 extends along the second direction. The detected piece 4 has a driven end 42 . In the first direction, the rotation axis of the detected part 4 is located between the driven end 42 and the detected end 41 , so that when the detected part 4 rotates, the driven end 42 and the detected end 41 have opposite motion trajectories. The support base 1221 is integrally formed with a first support surface, and an elastic member 43 is installed between the first support surface and the driven end 42. The elastic member 43 is used to make the detected component 4 tend to return to the first state.

As shown in Figures 6 to 8, the driving assembly includes a sliding member 9. The sliding member 9 is movably disposed on the box body 1. When the sliding member 9 moves, it can touch the driven end 42 of the detected component 4 and thereby cause the detected component to move. Piece 4 rotates. Specifically, the support frame 122 is integrally formed with a second supporting surface, and the second protective cover 121 is integrally formed with a third supporting surface. The second supporting surface and the third supporting surface extend along the second direction. The third direction intersects the second support surface and the third support surface. The second support surface and the third support surface are provided with sliding members 9 that can slide relative to the second support surface and the third support surface. The second supporting surface and the third supporting surface are arranged oppositely on the left and right sides of the sliding member 9 and contact the lower surface of the sliding member 9 to provide support for the sliding member 9 . The sliding member 9 is closer to the fifth end 15 of the box 1 in the third direction. The sliding member 9 is a plate-shaped member, the length direction of which extends along the second direction. At least one driving protrusion 91 is integrally formed on the lower surface of the sliding member 9 . When the number of driving protrusions 91 is multiple, the spacing between the driving protrusions 91 is set according to the required triggering frequency, and the number of the driving protrusions 91 is set according to the required number of triggerings. This embodiment takes two driving protrusions 91 as an example for description. The two driving protrusions 91 are spaced apart along the second direction on the lower surface of the slider 9 . The lower surface of the sliding member 9 is also integrally formed with an upwardly concave transmission recess 92. The transmission recess 92 is in the shape of a concave spherical surface. Preferably, the transmission recess 92 is a hemispherical groove. The number of the transmission recess 92 is set to be multiple. The transmission recesses 92 are arranged at intervals along the second direction. The transmission recess 92 is located on the right side of the driving protrusion 91 , that is, the transmission recess 92 is closer to the box body 1 than the driving protrusion 92 .

As shown in Figures 6, 7, 9 and 10, the driving component of the component being detected includes a first transmission wheel 6, a second transmission wheel 7, and a connecting rod group. The first transmission wheel 6 of the box body 1 is located at the second end 12 of the box body 1, and the first transmission wheel 6 is coaxially and fixedly connected to the end of the mixing rack. The rotation axis of the second transmission wheel 7 extends along the first direction. The connecting rod group is located between the first transmission wheel 6 and the second transmission wheel 7 in the first direction. The connecting rod group includes at least three first connecting rods 8. The first connecting rods 8 have a first transmission end 81 and a second transmission end 82. The axes of the first transmission end 81 and the second transmission end 82 are along the first direction. But the axes of the two do not coincide in the first direction. The first transmission end 81 is rotationally connected to the left end surface of the first transmission wheel 6 (the end surface away from the box body 1), and the second transmission end 82 is rotationally connected to the right end surface of the second transmission wheel 7 (the end surface close to the box body 1). The first transmission end 81 of the first connecting rod 8 is set away from the center of the circle of the first transmission wheel 6 , and the first transmission ends 81 of the plurality of first connecting rods 8 are all located on the same circumference. The second transmission end 82 is arranged deviated from the center of the circle of the second transmission wheel 7 , and the second transmission ends 82 of the plurality of first connecting rods 8 are located on the same circumference. The first transmission wheel 6, the second transmission wheel 7 and the connecting rod group form a parallel eccentric coupling.

The second protective cover 121 is integrally formed with a support column, and the second transmission wheel 7 is rotatably installed on the support column. The second transmission wheel 7 has a transmission convex portion 71 integrally formed on the circumferential surface. The transmission convex portion 71 is spherical. The transmission convex portion 71 matches the transmission concave portion 92. The transmission convex portion 71 can be inserted into the transmission concave portion 92. Preferably, The transmission protrusions 71 are hemispherical protrusions, and there are multiple transmission protrusions 71 , which are evenly distributed on the circumferential surface of the second transmission wheel 7 . When the second transmission wheel 7 rotates, it drives the transmission protrusion 71 to move in a circular motion, and the transmission protrusion 71 is inserted into the transmission recess 92 to drive the sliding member 9 to move. Alternatively, a transmission recessed portion may be provided on the second transmission wheel 7, and a transmission convex portion matching the transmission recessed portion may be provided on the sliding member 9, thereby achieving the same driving function. Optionally, the transmission concave portion and the transmission convex portion can also be in other shapes.

The rotation axis of the second transmission wheel 7 is closer to the developing roller 131 in the second direction than the rotation axis of the first transmission wheel 6 . Compared with arranging the transmission convex part 71 directly on the first transmission wheel 6 , the method adopted in this embodiment makes the matching position of the transmission convex part 71 and the transmission concave part 92 closer to the developing roller 131 in the second direction, so that the The slider 9 can be designed to be shorter in the second direction, thereby achieving miniaturization of the developing device.

The parallel eccentric coupling structure composed of the first transmission wheel 6, the second transmission wheel 7 and the connecting rod group disclosed above can also replace all or part of the gear structure of the transmission assembly at the first end 11 of the box body 1 to achieve transmission effect.

An upper cover 123 is installed on the upper side of the second protective cover 121, and the upper cover 123 is detachably installed on the second protective cover 121 by snapping. The upper cover 123 is used to limit the sliding member 9 in the third direction.

As shown in Figures 6 and 11, the power supply assembly includes a conductive member, which is located at the second end 12 of the box 1. The conductive member has an electrical receiving surface 5. The conductive member also has a first power supply terminal and a second power supply terminal. The first power supply terminal is electrically connected to an end of the developing roller 131 close to the second end 12 of the box body 1 , and the second power supply terminal is electrically connected to an end of the powder feeding roller close to the second end 12 of the box body 1 . The electrical receiving surface 5 is used to contact the power supply part on the image forming device to receive the electrical energy output by the image forming device, and transmit the electrical energy to the developing roller 131 and the powder feeding roller to form a bias voltage between the developing roller 131 and the powder feeding roller.

The electrical receiving surface 5 is closer to the fourth end 14 of the box body 1 in the second direction than the rotation axes of the developing roller 131 and the powder feeding roller. The electrical receiving surface 5 is closer to the third end 13 of the box 1 in the second direction than the rotation axis of the mixing rack.

As shown in Figures 1 to 3, the first protective cover 111 is removably and fixedly installed on the first end 11 of the box body 1. The first protective cover 111 covers the transmission assembly to protect the transmission assembly.

As shown in Figures 1, 2 and 6, the second protective cover 121 is detachably and fixedly installed on the second end 12 of the box body 1, and the second protective cover 121 is used to protect the component being detected. The first protective cover 111 and the second protective cover 121 are respectively connected to the first end 11 and the second end 12 of the box body 1 using screws. Optionally, buckles can also be used for connection.

As shown in FIGS. 1 to 3 , the identification component includes a storage medium 32 , an electrical contact surface 3 , and a bracket 31 . The storage medium 32 is used to store data, and the electrical contact surface 3 is used to contact and electrically connect with identification contacts in the image forming device. The bracket 31 is detachably installed on the first protective cover 111 . The storage medium 32 and the electrical contact surface 3 are electrically connected and both are installed on the bracket 31 . The electrical contact surface 3 is closer to the rear side of the box body 1 than the central axis of the driving part.

As shown in FIGS. 1 to 12 , the following is the working process of the developing device disclosed in this embodiment. First, the developing device is installed on the drum assembly in the image forming device. The driving unit receives the power output from the image forming apparatus to drive the developing roller 131, the powder feeding roller, and the stirring frame to rotate. The mixing rack drives the first transmission wheel 6 to rotate in the clockwise direction in Figure 7. The first transmission wheel 6 drives the second transmission wheel 7 to make a circular motion through the connecting rod group, and the second transmission wheel 7 drives the transmission convex portion 71 to make a circular motion. The movement track of the transmission convex part 71 overlaps with the transmission recessed part 92. Therefore, during the movement, the transmission convex part 71 passes through the matching position with the transmission recessed part 92 and is inserted into the transmission recessed part 92, driving the sliding member 9 to slide forward in the second direction. The sliding member 9 drives the driving protrusion 91 to slide forward. The driving protrusion 91 contacts the driven end 42 of the detected piece 4 and exerts pressure on the driven end 42 of the detected piece 4, thereby causing the driven end 42 to be pressed down and compressed. The elastic member 43 simultaneously causes the detected end 41 to swing upward to trigger the detection element in the image forming device. At this time, the detection element is in the second state.

Then the sliding member 9 continues to move forward to drive the driving protrusion 91 to move away from the driven end 42, so that the driving protrusion 91 no longer exerts pressure on the driven end 42. At this time, under the action of the elastic member 43, the detected end 41 Being pushed up, the detected piece 4 returns to the first state. As the slider 9 continues to move, the slider 9 drives the second driving protrusion 91 to contact the detected end 41 , so that the detected component 4 moves to the second state again and triggers the detection component in the image forming device again. Then, as the sliding member 9 continues to move, the second driving protrusion 91 no longer exerts pressure on the driven end 42, and under the action of the elastic member 43, the detected member 4 returns to the first state again. As a result, the detected end 41 triggers the detection member twice, so that the image forming device detects the developing device. Then, as the sliding member 9 moves, the transmission recessed portion 92 all leaves the movement track of the transmission driving protrusion 91, so that the transmission driving protrusion 91 can no longer be inserted into the transmission recessed portion 92, thus causing the sliding member 9 to stop moving.

Compared with the existing technology, the detected component of the developing device of this embodiment does not need to be provided with multiple gears for transmission. The detection function can be realized with fewer components. The structure is simple, easy to assemble, and operates stably, which is beneficial to the developing device. of miniaturization.

In other embodiments, the detected object 4 can also be configured to move linearly, such as moving in the left-right direction or up-down direction.

Embodiment 2

As shown in FIG. 13 , this embodiment discloses another developing device. Compared with the first embodiment, the difference lies in that the structure of the component to be detected is different.

In this embodiment, the component to be detected includes a driving component and a component to be detected 4. The structure and operation mode of the component to be detected 4 are the same as those in Embodiment 1, and will not be described again here.

As shown in Figures 14 and 19, in this embodiment, the sliding member 9 is slidably disposed between the support frame 122 and the second protective cover 121. Specifically, the first guide rail 1222 is integrally formed on the support frame 122, and the second protective cover 122 is integrally formed on the support frame 122. The cover 121 is integrally formed with a second guide rail. The first guide rail 1222 and the second guide rail extend along the second direction. The second guide rail is installed with a sliding member 9 that can slide relative to the second guide rail. The slider 9 also includes a pushed protrusion 93 . The protrusion is integrally formed on the right side wall of the sliding member 9 along the first direction. The pushed protrusion 93 protrudes from the right side wall of the slider 9 to the right. The pushed protrusion 93 extends into the first guide rail 1222 and can slide along the first guide rail 1222 . The first guide rail 1222 is located on the right side of the sliding member 9 , and the second guide rail is located on the left side of the sliding member 9 . The first guide rail 1222 provides support for the lower surface of the pushed protrusion 93 , and the second guide rail provides support for the lower surface of the sliding member 9 . The sliding member 9 is closer to the fifth end 15 of the box 1 in the third direction. At least one driving protrusion 91 is integrally formed on the lower surface of the sliding member 9 . When the number of driving protrusions 91 is multiple, the spacing between the driving protrusions 91 is set according to the required triggering frequency, and the number of the driving protrusions 91 is set according to the required number of triggerings. This embodiment takes two driving protrusions 91 as an example for description.

As shown in FIGS. 14 to 16 , the driving assembly includes a rotating member 61 , a second connecting rod 62 and a slider 64 . The rotating member 61 is disk-shaped. The rotating member 61 is fixedly installed on one end of the mixing frame close to the second end 12 of the box 1, and the rotation axis of the rotating member 61 is coaxial with the mixing frame. The second connecting rod 62 has a first connecting end and a second connecting end. The first connecting end is rotatably connected to an eccentric position on the left end surface of the rotating member 61 . The second connecting end is rotatably connected to a slider 64 , and the slider 64 is slidably installed in the first guide rail 1222 relative to the first guide rail 1222 . In the second direction, the slider 64 is further away from the developing roller 131 than the pushed protrusion 93 . The rotating member 61 and the second connecting rod 62 form a crank second connecting rod 62 mechanism. Therefore, when the rotating member 61 rotates, the second connecting rod 62 drives the slider 64 to make a reciprocating linear motion in the first guide rail 1222 along the second direction.

As shown in FIG. 14 , an upper cover 123 is installed on the upper side of the second protective cover 121 , and the upper cover 123 is detachably installed on the second protective cover 121 by snapping. The upper cover 123 is used to limit the sliding member 9 in the third direction.

As shown in FIGS. 14 to 17 , the following is the working process of the developing device disclosed in this embodiment. First, the developing device is installed on the drum assembly in the image forming device. The driving unit receives the power output from the image forming apparatus to drive the developing roller 131, the powder feeding roller, and the stirring frame to rotate. The mixing frame drives the rotating member 61 to rotate in the clockwise direction of Figure 5. The rotating member 61 drives the first connecting end of the second connecting rod 62 to make a circular motion. The second connecting end of the second connecting rod 62 drives the slider 64 on the first guide rail. Make reciprocating linear motion along the second direction within 1222 seconds. When the slider 64 slides forward, the slider 64 pushes the pushed protrusion 93 on the sliding member 9 so that the pushed protrusion 93 drives the sliding member 9 to slide forward in the second direction. The sliding member 9 drives the driving protrusion 91 to slide forward. The driving protrusion 91 contacts the driven end 42 of the detected piece 4 and exerts pressure on the driven end 42 of the detected piece 4, thereby causing the driven end 42 to be pressed down and compressed. The elastic member 43 simultaneously causes the detected end 41 to swing upward to trigger the detection element in the image forming device. At this time, the detection element is in the second state.

Then, as the sliding member 9 continues to move forward, the sliding member 9 drives the driving protrusion 91 to move away from the driven end 42, so that the protrusion no longer exerts pressure on the driven end 42. At this time, under the action of the elastic member 43 , the detected end 41 is lifted up, so that the detected component 4 returns to the first state. As the slider 9 continues to move, the slider 9 drives the second driving protrusion 91 to contact the detected end 41 , so that the detected component 4 moves to the second state again and triggers the detection component in the image forming device again. Then, as the sliding member 9 continues to move, the second driving protrusion 91 no longer exerts pressure on the driven end 42, and under the action of the elastic member 43, the detected member 4 returns to the first state again. As a result, the detected end 41 triggers the detection member twice, so that the image forming device detects the developing device.

Then, as the slider 9 moves, the slider 64 moves to the extreme position and starts to slide backward, and the slider 9 can no longer be pushed. The slider 9 stops moving.

In the prior art, the second end 12 of the box body 1 is provided with multiple gears for transmission, and the space of the second end 12 of the box body 1 is limited. Multiple gear transmission must be designed to stack the gears, resulting in the second end 12 of the box body 1 The problem is that it is large in size and complex in structure. The developing device disclosed in this embodiment only has one disc-shaped rotating member 61 at the second end 12 of the box body 1 , and does not need to be stacked. The structure is simple and the operation is stable, which is beneficial to the miniaturization of the developing device.

Other structures of the developing device of this embodiment are the same as those of Embodiment 1, and will not be described again here.

In other embodiments, the detected object 4 can also be configured to move linearly, such as moving in the left-right direction or up-down direction.

Embodiment 3

This embodiment provides yet another developing device. Compared with Embodiment 1 and Embodiment 2, the difference lies in that the structure of the component to be detected is different.

As shown in Figure 19, in this embodiment, the component being detected includes a driving component and a component being detected 4. The driving component receives the driving force of the driving part to drive the component being detected 4 to move between the first state and the second state. The component 4 is located at the second end 12 of the box body 1. The component 4 to be detected has a detected end 41, and the second protective cover 121 has an opening for the detected end 41 to extend. In the first state, the detected end 41 is not in contact with the detection member in the image forming apparatus. In the second state, the detected end 41 touches the detection piece in the image forming device, so that the developing device is detected by the image forming device.

In the second direction, the detected end 41 is closer to the fourth end 14 of the box body 1 than the rotation axes of the developing roller 131 and the powder feeding roller. In the second direction, the detected end 41 is closer to the third end 13 of the box 1 than the rotation axis of the mixing rack.

As shown in Figures 19 and 20, the second end 12 of the box body 1 is detachably and fixedly installed with a support frame 122. The support frame 122 is provided with a support hole for the end of the developing roller 131 and the powder feeding roller to be inserted. The support frame 122 A support seat 1221 is integrally formed on the left end face, and a pivot portion 44 is integrally formed on the detected component 4. The pivot portion 44 is rotatably mounted on the support seat 1221, and the rotation axis of the detected component 4 extends along the second direction. The detected piece 4 has a driven end 42 and a detected arm 41a. In the first direction, the pivot portion 44 is located between the driven end 42 and the detected arm 41a. The detected end 41 is located at an end of the detected arm 41a away from the box body 1 in the first direction. In the first direction, the driven end 42 is closer to the box body 1 than the detected arm 41a. The rear side wall of the driven end 42 is integrally formed with a first driven protrusion 421 and a second driven protrusion 422 extending in the second direction. In the first direction, the first driven protrusion 421 is closer to the box body 1 than the second driven protrusion 422. The number of driven protrusions can also be set to be more or less. The number of driven protrusions can be triggered as needed. number of times to set. The support base 1221 is integrally formed with a first support surface, and an elastic member 43 is installed between the first support surface and the driven end 42. The elastic member 43 is used to make the detected component 4 tend to return to the first state.

As shown in FIGS. 19 and 22 , the driving assembly includes a rotation transmission member 60 and a translation transmission member 70 . The rotation transmission member 60 includes a coaxially integrally formed sleeve 65 and a threaded shaft 66 . The sleeve 65 is closer to the box body 1 in the first direction than the threaded shaft 66 . The shaft sleeve 65 is fixedly installed on the end of the mixing frame through the D-shaped opening 651, and rotates together with the mixing frame. The threaded shaft 66 is provided with threads on its surface.

As shown in Figures 19 and 21, the translation transmission member 70 includes a threaded sleeve 72, a limiting part 73, and a contact part 74. The threaded sleeve 72, the limiting part 73, and the contact part 74 can be an integrally formed structure or can be separated. Structure, connected by welding, pasting, snapping, etc. In the second direction, the limiting portion 73 is located between the threaded sleeve 72 and the contact portion 74 , and the threaded sleeve 72 is farther from the developing roller 131 than the contact portion 74 . The thread sleeve 72 is coaxially threaded with the threaded shaft 66 . The limiting portion 73 is connected to the circumferential surface of the threaded sleeve 72 , and a limiting hole 731 is formed in the limiting portion 73 . A limiting post 124 is integrally formed on the second end 12 of the box body 1 along the first direction. The limiting post 124 is coaxially arranged with the limiting hole 731 . The limiting post 124 is inserted into the limiting hole 731 . The limiting portion 73 can slide along the limiting column 124 . The contact portion 74 is connected to an end of the limiting portion 73 close to the developing roller 131 in the second direction. The contact portion 74 is integrally formed with a contact protrusion 741 . The projection of the contact protrusion 741 in the third direction is in contact with the first driven protrusion 421 and the third driven protrusion 421 . The projections of the two driven protrusions 422 in the third direction overlap, and the contact protrusion 741 is used to contact the first driven protrusion 421 and the second driven protrusion 422 . The contact protrusion 741 is provided with an arc surface or an inclined surface to make the contact smoother. When it is necessary to adjust the speed at which the detected end 41 triggers the detection part in the image forming device, it is only necessary to use threads of different specifications to change the swing frequency and swing speed of the detected end 41 without using a large number of threads. Gears are used to adjust the speed, which greatly reduces the space occupied and is conducive to the miniaturization of the developing device.

As shown in FIGS. 19 to 22 , the following is the working process of the developing device disclosed in this embodiment. First, the developing device is installed on the drum assembly in the image forming device. The driving unit receives the power output from the image forming apparatus to drive the developing roller 131, the powder feeding roller, and the stirring frame to rotate. The stirring frame drives the threaded shaft 66 to rotate through the shaft sleeve 65. When the threaded shaft 66 rotates, the friction between the threaded surfaces threadedly connected with the threaded sleeve 72 causes the threaded sleeve 72 to also have a tendency to rotate. At the same time, the limiting part 73 and the threaded sleeve 72 are integrally formed, and the limiting part 73 is limited by the limiting column 124 . Therefore, the threaded sleeve 72 cannot rotate with the threaded shaft 66 . Furthermore, under the rotation of the threaded shaft 66 , the threaded sleeve 72 translates in a direction away from the box body 1 along the first direction. The threaded sleeve 72 then drives the contact portion 74 and the contact protrusion 741 to translate together through the limiting portion 73 . During the movement, the contact protrusion 741 first contacts the first driven protrusion 421 . Since the surface of the contact protrusion 741 is provided with a slope or an arc surface, the contact protrusion 741 exerts downward pressure on the first driven protrusion 421 during its movement, so that the first driven protrusion 421 drives the driven end 42 to swing downward. The moving end 42 then drives the pivoting part 44 to rotate, and the pivoting part 44 drives the detected arm 41a to swing upward, thereby causing the detected end 41 to also swing upward to trigger the detection part in the image forming device. In this process, the detection part 4 moves from The first state moves to the second state.

Then, as the contact protrusion 741 moves, the contact protrusion 741 leaves the first driven protrusion 421 , and the contact protrusion 741 no longer exerts pressure on the first driven protrusion 421 . At this time, under the action of the elastic member 43, the driven end 42 swings upward, and then drives the detected arm 41a to swing downward through the pivot part 44. During this process, the detected component 4 returns from the second state to the first state.

Then, as the contact protrusion 741 moves, the contact protrusion 741 comes into contact with the second driven protrusion 422, and then exerts downward pressure on the second driven protrusion 422, causing the detected object 4 to move from the first state to the second state again, thereby The detected end 41 triggers the detection element in the image forming apparatus again.

Then, as the contact protrusion 741 moves, the contact protrusion 741 leaves the second driven protrusion 422, and the contact protrusion 741 no longer exerts pressure on the second driven protrusion 422. At this time, under the action of the elastic member 43, the detected part 4 moves from the second state to the first state, so that the detected end 41 no longer triggers the detecting part in the image forming device.

Finally, as the threaded sleeve 72 moves, the threaded sleeve 72 moves outside the threaded portion on the threaded shaft 66. At this time, the threaded sleeve 72 can no longer be driven by the thread surface to produce translation, so that the threaded sleeve 72, the limiting portion 73, The contact portion 74 and the contact protrusion 741 both stop moving, and the detected object 4 no longer changes state.

Other structures of the developing device of this embodiment are the same as those of Embodiment 1, and will not be described again here.

In other embodiments, the detected object 4 can also be configured to move linearly, such as moving in the left-right direction or up-down direction.

What is described above are only some embodiments of the present invention. For those of ordinary skill in the art, several modifications and improvements can be made without departing from the creative concept of the present utility model, and these all belong to the protection scope of the present utility model.

Claims (12)

1. A developing device detachably mountable to an image forming apparatus, comprising:

a cartridge for storing a developer, the cartridge having a first end and a second end in a first direction and a third end and a fourth end in a second direction;

a developing roller rotatably supported at a third end of the cartridge body, an axis of the developing roller extending in a first direction;

a transmission assembly for receiving and transmitting a driving force of the image forming apparatus;

the detected component comprises a driving component and a detected piece, the detected piece can be arranged on the box body in a movable way relative to the box body, and the detected piece comprises a driven end and a detected end; the driving component receives the driving force motion of the transmission component and acts with the driven end to enable the detected piece to move, and then the detected end triggers the detected piece in the image forming device.

2. A developing apparatus according to claim 1, wherein said driving assembly includes a slider slidably provided on said cartridge, said slider including at least one driving projection capable of pushing said driven end to move the detected member when said slider moves.

3. The developing device according to claim 2, wherein the driving assembly further comprises a first driving wheel, a second driving wheel, and a link group;

the first driving wheel receives the driving force of the driving assembly to rotate, and the connecting rod group is connected with the first driving wheel and the second driving wheel, so that the second driving wheel is driven to rotate through the connecting rod group when the first driving wheel rotates.

4. A developing device according to claim 3, wherein one of said second transmission wheel and said slider is provided with a transmission convex portion, and the other is provided with a transmission concave portion which cooperates with said transmission convex portion;

when the second driving wheel rotates, the driving convex part is embedded into the driving concave part, and then the sliding part is driven to move.

5. A developing device according to claim 3, wherein said link group includes a plurality of first links having first and second driving ends, the axes of said first and second driving ends not overlapping;

The first transmission ends are arranged away from the circle center of the first transmission wheel, and a plurality of first transmission ends are positioned on the same circumference;

the second transmission ends deviate from the circle center of the second transmission wheel, and a plurality of second transmission ends are positioned on the same circumference.

6. A developing device according to claim 2, wherein said driving assembly includes a rotary member, a slider, and a second link;

the rotating piece receives the driving force rotation of the transmission assembly;

the sliding block is arranged on the box body in a sliding manner, and the projection of the sliding block and the projection of the sliding piece are at least partially overlapped in the sliding direction of the sliding block;

the second connecting rod is provided with a first connecting end and a second connecting end, and the first connecting end is rotatably connected to the eccentric position of the rotating piece; the second connecting end is rotatably connected to the sliding block;

when the rotating piece rotates, the second connecting rod drives the sliding block to slide, so that the sliding piece is pushed to move.

7. The developing device according to claim 6, wherein both the slider and the slider are moved in the second direction;

the slider has a pushed protrusion that at least partially coincides with a projection of the slider in a second direction, and the pushed protrusion is closer to the third end than the slider in the second direction.

8. A developing apparatus according to claim 1, wherein said driving assembly includes a rotary transmission member which receives a driving force of said transmission assembly for rotation, said rotary transmission member having a screw shaft, said rotary transmission member being screwed with said screw shaft, said rotary transmission member being rotated to drive said rotary transmission member to move by screw, thereby pushing said driven end to rotate the member to be detected.

9. The developing device according to claim 8, wherein the translation transmission member includes a threaded sleeve and a stopper portion, the threaded sleeve being screwed on the threaded shaft;

one end of the limiting part is connected with the limiting part, and a limiting hole is formed in the limiting part;

the box body is provided with a limit column extending along a first direction, and the limit column is inserted into the limit hole, so that when the translation transmission piece is driven by the threads of the rotation transmission piece, the translation transmission piece moves along the limit column in the first direction.

10. A developing device according to claim 9, wherein said translation transmission member includes a contact portion connected to the other end of said stopper portion, said contact portion being provided with a contact protrusion;

At least one driven protrusion is arranged on the driven end of the detected piece, and the contact protrusion is overlapped with the projection part of the driven protrusion in a third direction intersecting with the first direction and the second direction;

when the translation transmission piece is driven to move along the first direction, the contact protrusion pushes the driven protrusion to enable the detection piece to rotate.

11. A developing apparatus according to any one of claims 1-10, wherein said detected member is rotatably provided on the cartridge, and a rotation axis of said detected member is located between said driven end and the detected end in the first direction;

the rotation axis of the detected piece extends along the second direction.

12. The developing device according to claim 11, wherein the projection of the detected end in the first direction is spaced apart from the projection of the developing roller.