Developer Box

Abstract

A developing box can be detachably installed in an electronic imaging device provided with a photosensitive drum, and the developing box comprises a box body, a developing roller and a separating assembly; the developing roller is rotatably arranged on the box body, and is used to provide developer to the photosensitive drum; the separating assembly is arranged on the box body, and the separating assembly can drive the developing roller to move away from the photosensitive drum under the action of external force; because the separating assembly is arranged on the box body of the developing box, and the developing box is replaced regularly, the separating component is not easy to be damaged by wear and tear, and it is also convenient to disassemble and replace the separating component.

Description

[Technical field]

[0001] The present invention relates to the technical field of electronic imaging devices, and in particular to a developing box. [Background technology]

[0002] An existing electronic imaging device generally includes a photosensitive drum box and a developer box. The drum box is provided with a photosensitive drum, and the developer box is detachably installed in the electronic imaging device. The developer box is provided with a developer roller for supplying developer to the photosensitive drum. During the imaging operation, an electrostatic latent image is formed on the photosensitive drum, and the developer roller keeps squeezing the photosensitive drum and supplies developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum, and then transfers the developer on the photosensitive drum to the printing medium to form a visible image.

[0003] In order to avoid the developer roller remaining in contact with the photosensitive drum for a long time during non-imaging operations, in a known developer box, a separation component for moving the developer box to separate the developer roller from the photosensitive drum is usually arranged at both ends of the photosensitive drum box, and the components for moving the developer box need to receive driving force from the main body of the electronic imaging device.

[0004] However, in the above manner, since the separation component is arranged on the photosensitive drum box, the separation component is in long-term contact with different developing boxes, which makes the separation component prone to damage such as wear. When the separation component is damaged, it not only affects the contact and separation between the developing roller and the photosensitive drum, but also is not conducive to the subsequent disassembly and replacement of the separation component. [Summary of the invention]

[0005] The present application provides a developing box to solve the problem that when a separation component in an existing electronic imaging device is damaged, the contact and separation between the developing roller and the photosensitive drum are affected.

[0006] An embodiment of the present application provides a developing box, which can be detachably installed in an electronic imaging device provided with a photosensitive drum, and the developing box includes a box body, a developing roller and a separation assembly; the developing roller is rotatably arranged on the box body, and the developing roller is used to provide developer to the photosensitive drum; the separation assembly is arranged on the box body, and the separation assembly can drive the developing roller to move in a direction away from the photosensitive drum under the action of external force.

[0007] Optionally, the separation component includes a support shaft and a separation member, the support shaft can move relative to the box body along a first direction under the action of an external force, the first direction is parallel to the length direction of the developing roller, and the separation member can move with the movement of the support shaft.

[0008] Optionally, the separation assembly further comprises a first elastic member, and the first elastic member is used to restore the support shaft so as to enable the support shaft to move in the opposite direction along the first direction.

[0009] Alternatively, the separation member may be driven by the support shaft to rotate, or to move in a direction perpendicular to the first direction.

[0010] Optionally, a mounting groove and / or a mounting hole is further provided on the box body, and a support member is further provided on the box body near the mounting groove and / or the mounting hole; the support shaft is accommodated in the mounting groove and / or the mounting hole, the separating member is connected to the supporting member, and the end of the separating member away from the supporting member abuts against the abutment member of the electronic imaging device.

[0011] Optionally, the support shaft includes a support shaft body and a separation portion, and the separation portion is a groove or protrusion formed on the support shaft body, and the support piece is a limiting column extending from the surface of the box body; the separation piece includes a supporting portion and a mounting portion, and the end of the supporting portion away from the mounting portion abuts against the supporting piece, and an end of the mounting portion close to the supporting portion is provided with a first connecting hole along the radial direction of the support shaft; an end of the mounting portion close to the supporting portion is sleeved on the limiting column through the first connecting hole, and an end of the mounting portion away from the supporting portion is sleeved or clamped on the separation portion; when the support shaft moves along the first direction relative to the box body under the action of external force, the separation portion can drive the separation piece to rotate around the limiting column to make the box body move in the direction away from the supporting piece.

[0012] Optionally, a second connection hole or a clamping groove is provided at one end of the mounting portion away from the abutting portion along the axial direction of the support shaft, and the mounting portion can be sleeved or clamped on the separation portion through the second connection hole or the clamping groove.

[0013] Optionally, the support shaft includes a support shaft body and a separation portion, and the separation portion is a groove or a protrusion formed on the support shaft body; the separation member includes a fixed member and a movable member, the fixed member is fixedly connected to the support member, the fixed member is provided with a receiving groove along the radial direction of the support shaft, and the movable member is accommodated in the receiving groove; an inclined wedge portion is provided at one end of the movable member close to the box body, and when the support shaft moves along a first direction relative to the box body under the action of external force, the separation portion drives the inclined wedge portion to move, so that the box body moves in a direction away from the abutment member.

[0014] Optionally, the support member includes a first rib and a second rib arranged on both sides of the installation groove along the radial direction of the support axis, and a third connecting hole is respectively provided on the first rib and the second rib. A clamping portion is provided at one end of the fixing member close to the box body, and the clamping portion is clamped and matched with the third connecting hole.

[0015] Optionally, the separation member further includes a second elastic member, and the second elastic member is arranged between the fixed member and the movable member.

[0016] After adopting the above technical solution, the beneficial effects are:

[0017] Compared with the prior art, a developing box provided in the present invention can be detachably installed in an electronic imaging device, and the developing box includes a box body, a developing roller and a separation component, and the separation component is arranged on the box body. The separation component can drive the developing roller to move away from the photosensitive drum under the action of external force. Compared with the separation component of the existing electronic imaging device arranged on the photosensitive drum box, since the separation component is arranged on the box body of the developing box, and the developing box is replaced regularly, the separation component is not prone to damage such as wear; at the same time, if the separation component is damaged, it is only necessary to remove the developing box from the electronic imaging device, then remove the damaged separation component from the box body of the developing box, and replace it with a good separation component, which is conducive to the disassembly and replacement of the separation component.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application.

Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the developing box provided in Example 1 of the present application.

[0021] Figure 2 This is a schematic structural diagram of the developing box provided in Example 1 of the present application from another angle.

[0022] Figure 3 This is a schematic diagram of the structural decomposition of the separation components in the developer box provided in Example 1 of the present application.

[0023] Figure 4 This is a schematic diagram of the structure of the separation component in the developing box provided in Example 1 of the present application.

[0024] Figure 5 Another structural schematic diagram of the separation component in the developing box provided in Example 1 of the present application.

[0025] Figure 6 Schematic diagram of the matching relationship between the separation component in the developer box and the driving component and the abutment component in the electronic imaging device provided in Example 1 of the present application.

[0026] Figure 7 This is a schematic diagram of another matching relationship between the separation component in the developer box provided in Example 1 of the present application and the driving component and the abutting component in the electronic imaging device.

[0027] Figure 8This is a schematic diagram of the structure of the developing box provided in Example 2 of the present application.

[0028] Fig. 9 This is a schematic diagram of the structural decomposition of the separation components in the developer box provided in Example 2 of the present application.

[0029] Fig.10 This is a schematic diagram of the structure of the separation component in the developing box provided in Example 2 of the present application.

[0030] Fig.11 This is a schematic diagram of the matching relationship between the separation component in the developing box provided in Example 2 of the present application and the driving component and the abutting component in the electronic imaging device.

[0031] Fig.12 This is a schematic diagram of another matching relationship between the separation component in the developing box provided in Example 2 of the present application and the driving component and the abutting component in the electronic imaging device.

[0032] Reference numerals:

[0033] 100, developing box;

[0034] 1. Box body;

[0035] 11. Box cover; 111. Mounting slot; 112. Limiting column; 113. Fifth connecting hole; 114a. First rib; 114b. Second rib; 115. Third connecting hole;

[0036] 2. Developing roller;

[0037] 3. Separate components;

[0038] 31. support shaft; 311. support shaft body; 312. separation part; 313. receiving part; 32. first elastic member; 33. separation member; 331. abutment part; 332. mounting part; 3321. first connecting hole; 3322a. clamping groove; 3322b. second connecting hole; 333. second elastic member; 334. movable member; 3341. inclined wedge part; 335. fixing member; 3351. receiving groove; 3352. clamping part;

[0039] 4. End cap;

[0040] 41. Fourth connecting hole;

[0041] 200, driving member;

[0042] 300. Abutment member. [Specific implementation method]

[0043] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0044] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0046] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] In electronic imaging devices such as laser printers, copiers, fax machines, etc., a photosensitive drum cartridge and a developer cartridge are usually installed, wherein the photosensitive drum cartridge has a rotatable photosensitive drum, and the developer cartridge has a rotatable developer roller. During the imaging operation, an electrostatic latent image is formed on the photosensitive drum, and the developer roller keeps pressing the photosensitive drum to supply developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum, and then transfers the developer on the photosensitive drum to a printing medium such as paper to form a visible image.

[0048] If the developing roller remains in contact with the photosensitive drum surface for a long time during non-imaging operations, many adverse consequences may occur. For example, if the developing roller remains in contact with the photosensitive drum during non-imaging operations, the developing roller may cause excess developer to attach to the photosensitive drum surface. If the photosensitive drum and the developing roller are still rotating and rubbing against each other, the photosensitive drum, the developing roller and the developer may degrade prematurely. In particular, if a developing roller with an elastic layer is used, the developing roller may be permanently deformed if it remains in contact with the photosensitive drum for a long time, which may cause uneven development of the latent image on the photosensitive drum after long-term use.

[0049] The prior art proposes that a separation component is provided at both ends of the photosensitive drum cartridge for moving the developing cartridge to separate the developing roller from the photosensitive drum, and the separation component receives a driving force from the main body of the electronic imaging device to switch the developing roller and the photosensitive drum between two states of contacting or separating from each other. However, since the separation component is provided at both ends of the photosensitive drum cartridge, the separation component is in contact with different developing cartridges for a long time, which causes the separation component to be easily damaged by wear, thereby affecting the contact and separation between the developing roller and the photosensitive drum, and is not conducive to the disassembly and replacement of the separation component.

[0050] In order to solve the above technical problems, the embodiment of the present application provides a developing box, which can be detachably installed in an electronic imaging device provided with a photosensitive drum. The developing box includes a box body, a developing roller and a separation component, wherein the developing roller is rotatably arranged on the box body, and the separation component is arranged on the box body. Since the separation component is arranged on the box body of the developing box, and the developing box is replaced regularly, the separation component is not easy to be damaged by wear and tear; at the same time, if the separation component is damaged, it is only necessary to remove the developing box from the electronic imaging device, then remove the damaged separation component from the box body of the developing box, and replace the intact separation component, which is conducive to the disassembly and replacement of the separation component.

[0051] Example 1

[0052] See also Figure 1 and Figure 2 The embodiment of the present application provides a developing box 100, which can be detachably installed in an electronic imaging device provided with a photosensitive drum (not shown in the figure), and the developing box 100 includes a box body 1, a developing roller 2 and a separation component 3, wherein the developing roller 2 is rotatably arranged on the box body 1, and the developing roller 2 is used to provide developer to the photosensitive drum; the separation component 3 is arranged on the box body 1, and the separation component 3 can drive the developing roller 2 to move away from the photosensitive drum under the action of an external force. For example, the separation component 3 can receive a driving force from the electronic imaging device to move the developing roller 2 away from the photosensitive drum.

[0053] Specifically, in order to facilitate understanding of the instructions, various directions of the developing cartridge 100 are preset for the following instructions. Figure 1 The left front side direction is the front side of the developing box 100, and the opposite direction is the rear side of the developing box 100. Figure 1 The upper part of the middle left front side is the upper side of the developing box 100, and the opposite direction is the lower side of the developing box 100. Figure 1 The upper left direction is the left side of the developing box 100, and the opposite direction is the right side of the developing box 100, wherein the front side of the developing box 100 faces the photosensitive drum. In the specification, the terms "front", "rear", "up", "down", "left" and "right" that appear in the developing box 100 and its components are all in the form of Figure 1 The directions shown in the figure shall prevail.

[0054] A driving member 200 is also provided in the electronic imaging device, and the driving member 200 is used to apply a driving force along the first direction D1 to the separation component 3, and the developing box 100 moves in a direction away from or close to the photosensitive drum through the separation component 3, so that the developing roller 2 and the photosensitive drum are switched between two states of contacting or separating from each other. Among them, the first direction D1 is parallel to the length direction of the developing roller 2, that is, the first direction D1 is parallel to the axial direction of the developing roller 2. In the embodiment of the present application, the first direction D1 is a direction from right to left.

[0055] See also Figure 3 The box body 1 is also provided with a mounting groove 111 and at least one supporting member, the supporting member is arranged close to the mounting groove 111, and the electronic imaging device is also provided with at least one abutting member 300 (see Figure 6 and Figure 7 ).

[0056] See also Figure 3 and Figure 6 The separation component 3 includes a support shaft 31, a first elastic member 32 and at least one separation member 33. The support shaft 31 is accommodated in the mounting groove 111. The separation member 33 is connected to the support member. The end of the separation member 33 away from the support member abuts against the abutment member 300.

[0057] Specifically, the front wall of the developing box 100 defines a mounting groove 111 along the first direction D1 , the support shaft 31 is received in the mounting groove 111 along the first direction D1 , and the support shaft 31 can move in the mounting groove 111 along the first direction D1 or in the opposite direction of the first direction D1 .

[0058] The first elastic member 32 is used to restore the support shaft 31 so that the support shaft 31 can move in the mounting groove 111 along the opposite direction of the first direction D1 , and the separation member 33 can move along with the movement of the support shaft 31 .

[0059] When the support shaft 31 receives a driving force, the support shaft 31 moves in the mounting groove 111 along the first direction D1 so that the support shaft 31 moves away from the abutment member 300; when the driving force received by the support shaft 31 is released, the support shaft 31 moves in the mounting groove 111 along the opposite direction of the first direction D1 so that the support shaft 31 moves toward the abutment member 300.

[0060] It can be understood that two mounting parts can be spaced apart along the first direction D1 on the front wall of the developing box 100, and mounting holes are opened in the mounting parts. The support shaft 31 can be inserted into the mounting holes of the two mounting parts in sequence so that the support shaft 31 can be rotatably installed on the front wall of the developing box 100.

[0061] The number and position of the separating members 33, the supporting members and the abutting members 300 correspond one to one. The number of the separating members 33 can be 1, 2, 3 or any other number. For example, the number of the separating members 33 is 1, and the separating member 33 is arranged in the middle of the supporting shaft 31, or in any other position, which is not limited here; or, the number of the separating members 33 is 2, and the separating members 33 are symmetrically spaced at both ends of the supporting shaft 31, which is not limited here.

[0062] The support shaft 31 includes a support shaft body 311 and at least one separation portion 312 connected to each other, and the separation portion 312 can be a groove or a protrusion formed on the support shaft body 311 , and the support member is a limiting column 112 extending from the surface of the box body 1 .

[0063] Specifically, the support shaft body 311 can be made of materials such as iron, steel or hard plastic, and the separation part 312 can be connected to the support shaft body 311 by integral molding, welding or milling, and the number of the separation part 312 and the separation piece 33 corresponds one to one.

[0064] See also Figure 4 and Figure 5 The separation member 33 includes a supporting portion 331 and a mounting portion 332. The end of the supporting portion 331 away from the mounting portion 332 is in contact with the supporting member 300, and the end of the mounting portion 332 close to the supporting portion 331 is provided with a first connection hole 3321 along the radial direction of the support shaft 31. The end of the mounting portion 332 close to the supporting portion 331 is sleeved on the limiting column 112 through the first connection hole 3321, and the end of the mounting portion 332 away from the supporting portion 331 is sleeved or clamped on the separation member 312.

[0065] When the support shaft 31 receives the driving force, the separation portion 312 can drive the separation member 33 to rotate around the limiting column 112 , so that the support shaft 31 moves in a direction away from the abutting member 300 .

[0066] Specifically, the abutment portion 331 and the mounting portion 332 may be connected to each other at an obtuse angle, and an end of the mounting portion 332 away from the abutment portion 331 is provided with a second connecting hole 3322b or a clamping groove 3322a along the axial direction of the support shaft 31, that is, the mounting portion 332 may be sleeved on the separation portion 312 through the second connecting hole 3322b.

[0067] When the separation portion 312 is a groove formed on the support shaft body 311, that is, the outer diameter of the separation portion 312 is smaller than the outer diameter of the support shaft body 311, the inner diameter of the second connecting hole 3322b is greater than or equal to the outer diameter of the separation portion 312, and the inner diameter of the second connecting hole 3322b is smaller than the outer diameter of the support shaft body 311, or, the mounting portion 332 can also be clamped with the separation portion 312 through the clamping groove 3322a, and the opening width of the clamping groove 3322a is greater than or equal to the outer diameter of the separation portion 312, and the opening width of the clamping groove 3322a is smaller than the outer diameter of the support shaft body 311.

[0068] When the separation portion 312 is a protrusion formed on the support shaft body 311, two protrusions are formed on the support shaft body 311 adjacent to and spaced apart from each other, and the protrusions extend from the surface of the support shaft body 311 along the radial direction of the support shaft 31, and the mounting portion 332 is arranged between the two protrusions, and the inner diameter of the second connecting hole 3322b is greater than or equal to the outer diameter of the support shaft body 311, or the mounting portion 332 can also be clamped between the two protrusions through the clamping groove 3322a, and the opening width of the second mounting groove clamping groove 3322a is greater than or equal to the outer diameter of the shaft body 311.

[0069] The shape of the aforementioned snap-in groove 3322a includes but is not limited to a U-shape, a C-shape, an arc shape, etc., which are not limited here. In the embodiment of the present application, the number of the separation member 33, the abutment member 300, the support member and the separation portion 312 are all two, and the separation portion 312 is symmetrically spaced at both ends of the support shaft body 311, and the shape of the snap-in groove 3322a is U-shaped.

[0070] The limiting column 112 includes a first column extending forward from the front wall of the developing box 100 and a second column extending upward from the end of the first column away from the developing box 100, the second column extends into the first connecting hole 3321, and the first column is used to support the mounting portion 332. When the separating member 33 is damaged by wear and tear, the user can directly remove the separating member 33 from the limiting column 112 and the supporting shaft 31, which is convenient for disassembly and replacement of the separating member 33.

[0071] It can be understood that the second column can also extend downward from the end of the first column away from the developing box 100, and the outer diameter of the end of the second column away from the first column is larger than the inner diameter of the first connecting hole 3321, which is used to support the mounting portion 332 when the second column is inserted into the first connecting hole 3321.

[0072] It is understandable that the front surface of the box body 1 may also be provided with a box cover 11, and the mounting groove 111 and the limiting column 112 are provided on the box cover 11. The box cover 11 may be fixedly connected to the box body 1 by welding or integral molding, or may be detachably connected to the box body 1 by snapping, riveting, threaded fitting, etc.

[0073] See also Figure 6 and Figure 7 During the imaging operation, the angle between the mounting portion 332 and the support shaft body 311 is approximately 90°, and the end of the abutment portion 331 away from the mounting portion 332 abuts against the abutment member 300. At this time, since the distance between the end of the abutment portion 331 close to the mounting portion 332 and the abutment member 300 is the smallest, the developing roller 2 and the photosensitive drum are in contact with each other.

[0074] During non-imaging operation, when the support shaft body 311 receives the driving force applied by the driving member 200, the support shaft 31 drives the separating member 33 to rotate around the limiting column 112, so that the end of the mounting portion 332 away from the abutting portion 331 moves along the first direction D1, and the end of the abutting portion 331 away from the mounting portion 332 moves along the opposite direction of the first direction D1 until the angle between the abutting portion 331 and the support shaft body 311 is approximately 90°. At this time, since the distance between the end of the abutting portion 331 close to the mounting portion 332 and the abutting member 300 is the largest, the developing box 100 moves away from the photosensitive drum through the separating member 33, that is, moves backward, so that the developing roller 2 and the photosensitive drum are out of contact with each other.

[0075] It is understandable that the mounting groove 111 can also be set on the front wall of the box body 1 along a direction perpendicular to the first direction D1, or can be set on the upper wall of the box body 1, as long as the support shaft body 311 can drive the separation member 33 to rotate when moving along the mounting groove 111, so that the support shaft 31 moves in a direction away from the abutment member 300, and no limitation is made here.

[0076] Please continue to see Figure 3 , Figure 6 and Figure 7 The support shaft 31 further includes a receiving portion 313 , which is connected to the end of the support shaft body 311 and is used to receive a driving force.

[0077] Specifically, the receiving portion 313 is connected to the end of the support shaft body 311 close to the driving member 200 . When the driving member 200 moves along the first direction D1 , it can contact the receiving portion 313 and drive the receiving portion 313 to move along the first direction D1 .

[0078] Please continue to see Figure 1 and Figure 2 The developing box 100 further includes an end cover 4, which is connected to a side wall of the box body 1 whose normal direction is parallel to the first direction D1, that is, the end cover 4 is connected to the right wall of the box body 1. A fourth connecting hole 41 is provided on the end cover 4, and the support shaft body 311 can pass through the fourth connecting hole 41.

[0079] Specifically, the end cap 4 and the right wall of the box body 1 can be fixedly connected by welding, integral molding, etc., or can be detachably connected by snap-fitting, riveting, threaded fitting, etc., which is not limited here. It can be understood that a groove for accommodating the receiving portion 313 can also be provided on the end cap 4, and the receiving portion 313 can move in the first direction D1 or the opposite direction of the first direction D1 in the groove.

[0080] In some embodiments, the first elastic member 32 is connected to the support shaft 31. Optionally, the first elastic member 32 may be a spring sleeved on the support shaft 31 and located between the end cover 4 and the receiving portion 313.

[0081] When the driving member 200 moves along the first direction D1, the driving member 200 first gradually approaches the support shaft 31. After the driving member 200 contacts the support shaft 31, the driving member 200 drives the support shaft 31 to continue to move along the first direction D1 and compress the first elastic member 32. When the driving member moves in the opposite direction of the first direction D1 and loses contact with the support shaft 31, the first elastic member 32 releases elastic potential energy to restore the support shaft 31, so that the support shaft 31 can move in the opposite direction of the first direction D1 in the installation groove 111, and the separation member 33 can move with the movement of the support shaft 31.

[0082] It can be understood that the first elastic member 32 can be set at any position on the support shaft 31. As long as the support shaft 31 can compress or stretch the first elastic member 32 during the movement along the first direction D1, after the driving member 200 is out of contact with the support shaft 31, the first elastic member 32 can release elastic potential energy to drive the support shaft 31 to move in the opposite direction of the first direction D1.

[0083] In some embodiments, the first elastic member 32 may be disposed between the separation member 33 and the support column 112. Alternatively, the first elastic member may be a torsion spring sleeved on the support column 112.

[0084] When the driving member 200 moves along the first direction D1, the driving member 200 first gradually approaches the support shaft 31. After the driving member 200 contacts the support shaft 31, the driving member 200 drives the support shaft 31 to continue to move along the first direction D1, and the support shaft 31 drives the separation member 33 to rotate counterclockwise around the support column 112 and twist the first elastic member 32. When the driving member moves in the opposite direction of the first direction D1 and loses contact with the support shaft 31, the first elastic member 32 releases elastic potential energy to drive the separation member 33 to rotate clockwise around the support column 112, thereby driving the support shaft 31 to move in the mounting groove 111 in the opposite direction of the first direction D1.

[0085] It can be understood that the first elastic member 32 can also be a spring, a leaf spring or any other elastic component, as long as the first elastic member 32 can store elastic potential energy during the counterclockwise rotation of the separating member 33 around the support column 112, and after the driving member 200 is out of contact with the support shaft 31, the first elastic member 32 can release the elastic potential energy to drive the separating member 33 to rotate clockwise, and then drive the support shaft 31 to move in the opposite direction of the first direction D1.

[0086] In some embodiments, the driving member 200 can also be directly fixedly connected to the support shaft 31. The driving member 200 can directly drive the support shaft 31 to reciprocate in the installation groove 111 along the first direction D1 and in the opposite direction of the first direction D1 without the need to additionally set up the first elastic member 32, thereby simplifying the structure of the separation component 3 and preventing the problem of the developing roller 2 and the photosensitive drum being unable to contact each other due to failure of the first elastic member 32.

[0087] When switching from non-imaging operation to imaging operation, the driving member 200 moves in the opposite direction of the first direction D1 until the driving member 200 is out of contact with the receiving portion 313. Under the elastic action of the first elastic member 32, the support shaft body 311 moves in the opposite direction of the first direction D1, thereby driving the separating member 33 to rotate around the limiting column 112, and the end of the mounting portion 332 away from the abutting portion 331 moves in the opposite direction of the first direction D1, and the end of the abutting portion 331 away from the mounting portion 332 moves in the first direction D1 until the angle between the mounting portion 332 and the support shaft body 311 is approximately 90°. At this time, the distance between the end of the abutting portion 331 close to the mounting portion 332 and the abutting member 300 is the smallest, and the developing box 100 moves toward the direction close to the photosensitive drum through the separating member 33, that is, moves forward, so that the developing roller 2 and the photosensitive drum contact each other, and finally realizes automatic contact or separation between the developing roller 2 and the photosensitive drum.

[0088] Example 2

[0089] See also Figure 8 and Fig. 9 The structure of the developing box 100 is basically the same as that of the embodiment 1, except that the separating member 33 includes a fixing member 335 and a movable member 334, the fixing member 335 is fixedly connected to the supporting member, the fixing member 335 is provided with a receiving groove 3351 along the radial direction of the supporting shaft 31, and the movable member 334 is received in the receiving groove 3351.

[0090] The support member includes a first rib 114a and a second rib 114b arranged on both sides of the mounting groove 111 along the radial direction of the support shaft 31. At least one third connecting hole 115 is respectively provided on the first rib 114a and the second rib 114b. The separation portion 312 can be a groove or a protrusion formed on the support shaft body 311.

[0091] Specifically, the fixing member 335 may be a hollow cylindrical structure, and a receiving groove 3351 is provided through the fixing member 335 . The movable member 334 is received in the receiving groove 3351 and can move along the receiving groove 3351 .

[0092] When the separation portion 312 is a protrusion formed on the support shaft body 311, the separation portion 312 is extended from the surface of the support shaft body 311 along the radial direction of the support shaft 31. The protrusion may include an annular portion and a driving portion. The annular portion is formed in an annular shape on the side wall of the support shaft body 311, and the driving portion extends from a part of the annular portion along the radial direction of the support shaft 31. The movable member 334 is provided with an inclined wedge portion 3341 (see FIG. 1 ) at one end close to the box body 1. Fig.10 ), when the support shaft 31 receives the driving force, the protrusion slides along the inclined surface of the wedge portion 3341 to move the support shaft 31 away from the abutment member 300.

[0093] Specifically, the distance between the inclined surface of the inclined wedge portion 3341 and the support shaft body 311 gradually decreases along the first direction D1. The number of protrusions can be 1, 2, 3 or any other number, for example, the number of protrusions is 1, and the protrusion is formed in the middle of the support shaft body 311, or other positions, which are not limited here; or the number of protrusions can be 2, and the protrusions are symmetrically spaced and formed at both ends of the support shaft body 311, which are not limited here.

[0094] When the separation portion 312 is a groove formed on the support shaft body 311, that is, the outer diameter of the separation portion 312 is smaller than the outer diameter of the support shaft body 311. In the initial state, the end of the inclined wedge portion 3341 is in the groove. When the support shaft 31 receives a driving force, the support shaft body 311 can move along the first direction D1, so that the inclined wedge portion 3341 gradually moves out of the groove, and then the end of the inclined wedge portion 3341 abuts against the surface of the support shaft body 311. Since the outer diameter of the support shaft body 311 is larger than the outer diameter of the separation portion 312, when the end of the inclined wedge portion 3341 abuts against the surface of the support shaft body 311, the support shaft 31 moves in a direction away from the abutment member 300.

[0095] See also Fig.10 At least two clamping parts 3352 are provided at one end of the fixing member 335 close to the box body 1 , and the clamping parts 3352 are clamped and matched with the third connecting holes 115 , and the number and positions of the clamping parts 3352 and the third connecting holes 115 correspond one to one.

[0096] Specifically, the number of the third connection holes 115 formed by the first rib 114a and the second rib 114b can be 1, 2, 3 or any other number, which is not limited here. The clamping portion 3352 and the third connection hole 115 are detachably connected by clamping cooperation. When the movable part 334 is damaged by wear, the fixing part 335 can be removed and the movable part 334 can be replaced, which is convenient for disassembly and replacement of the separation part 33.

[0097] See also Fig.11 and Fig.12During the imaging operation, the protrusion abuts against the end of the wedge portion 3341 away from the support shaft body 311. At this time, since the distance between the end of the movable member 334 close to the abutment member 300 and the support shaft body 311 is the smallest, the developing roller 2 and the photosensitive drum are in contact with each other.

[0098] During non-imaging operation, when the support shaft body 311 receives the driving force applied by the driving member 200, the support shaft 31 drives the protrusion to slide along the inclined surface of the wedge portion 3341 until the protrusion moves to the end of the wedge portion 3341 close to the support shaft body 311, and the movable member 334 moves forward relative to the fixed member 335. At this time, the distance between the end of the movable member 334 close to the abutment 300 and the support shaft body 311 is the largest, and the developing box 100 moves away from the photosensitive drum through the fixed member 335, that is, moves backward, so that the developing roller 2 and the photosensitive drum are out of contact with each other.

[0099] The support shaft 31 further includes a receiving portion 313 , which is connected to an end of the support shaft body 311 , and is used to receive a driving force.

[0100] Specifically, the receiving portion 313 is connected to the end of the support shaft body 311 close to the driving member 200 . When the driving member 200 moves along the first direction D1 , it can contact the receiving portion 313 and drive the receiving portion 313 to move along the first direction D1 .

[0101] Please continue to see Figure 8 The developing box 100 further includes an end cover 4, which is connected to a side wall of the box body 1 whose normal direction is parallel to the first direction D1, that is, the end cover 4 is connected to the right wall of the box body 1. The end cover 4 is provided with a fourth connecting hole 41, and the supporting shaft body 311 can pass through the fourth connecting hole 41, and the first elastic member 32 is arranged between the end cover 4 and the receiving portion 313, and the separating member 33 further includes a second elastic member 333, and the second elastic member 333 is arranged between the fixing member 335 and the movable member 334.

[0102] Specifically, the end cover 4 and the right wall of the box body 1 can be fixedly connected by welding, integral molding, etc., or can be detachably connected by snap-fitting, riveting, threaded fitting, etc., which are not limited here. The first elastic member 32 can be a spring, a leaf spring, or any other elastic element. In the embodiment of the present application, the first elastic member 32 is a spring sleeved on the receiving portion 313.

[0103] It is understandable that a groove for accommodating the receiving portion 313 may be formed on the end cover 4 , and the receiving portion 313 may move in the groove along the first direction D1 or in the opposite direction of the first direction D1 .

[0104] When switching from non-imaging operation to imaging operation, the driving member 200 moves in the opposite direction of the first direction D1 until the driving member 200 is out of contact with the receiving portion 313. Under the elastic action of the first elastic member 32 and the second elastic member 333, the support shaft body 311 moves in the opposite direction of the first direction D1, thereby driving the protrusion to slide along the inclined surface of the wedge portion 3341 until the protrusion moves to the end of the wedge portion 3341 away from the support shaft body 311. At this time, the distance between the end of the movable member 334 close to the abutment member 300 and the support shaft body 311 is the smallest, and the developing box 100 moves toward the direction close to the photosensitive drum through the fixing member 335 and the movable member 334, that is, moves forward, so that the developing roller 2 and the photosensitive drum contact each other, and finally realizes automatic contact or separation between the developing roller 2 and the photosensitive drum.

[0105] When in use, when the electronic imaging device is in a non-imaging operation state, the driving member 200 applies a driving force along the first direction D1 to the support shaft 31, and the support shaft 31 moves along the first direction D1 in the mounting groove 111, thereby driving the separation member 33 to move. Since the end of the separation member 33 away from the support shaft 31 is always in contact with the abutment member 300, the separation member 33 gradually increases the distance between the support shaft 31 and the abutment member 300 during the movement, so that the developing box 100 moves in a direction away from the photosensitive drum, so that the developing roller 2 is separated from the photosensitive drum. When the electronic imaging device is in the imaging operation state, the driving member 200 releases the driving force applied to the support shaft 31, and under the elastic action of the first elastic member 32, the support shaft 31 moves in the mounting groove 111 in the opposite direction of the first direction D1, thereby driving the separation member 33 to move. During the movement, the separation member 33 gradually reduces the distance between the support shaft 31 and the abutment member 300, so that the developing box 100 moves toward the direction close to the photosensitive drum, so that the developing roller 2 and the photosensitive drum are in contact with each other, thereby supplying developer to the photosensitive drum.

[0106] Compared with the prior art, in a developing box 100 provided by the present invention, the developing box 100 includes a box body 1, a developing roller 2 and a separation component 3, and the separation component 3 is arranged on the box body 1. The separation component 3 can drive the developing roller 2 to move away from the photosensitive drum under the action of external force. Compared with the separation part 312 of the existing electronic imaging device arranged on the photosensitive drum box, since the separation component 3 is arranged on the box body 1 of the developing box 100, and the developing box 100 is replaced regularly, the separation part 312 is not easy to be damaged by wear and tear; at the same time, if the separation part 312 is damaged, it is only necessary to remove the developing box 100 from the electronic imaging device, and then remove the damaged separation part 312 from the box body 1 of the developing box 100, and replace the intact separation part 312, which is conducive to the disassembly and replacement of the separation part 312.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A developing box, detachably mounted in an electronic imaging device provided with a photosensitive drum, characterized in that: The developing box comprises a box body, a developing roller and a separation assembly; The developing roller is rotatably disposed on the box body, and the developing roller is used to provide developer to the photosensitive drum; The separation assembly is arranged on the box body, and the separation assembly can drive the developing roller to move away from the photosensitive drum under the action of external force; The separation assembly comprises a support shaft and a separation member, wherein the support shaft can move relative to the box body along a first direction under the action of an external force, the first direction is parallel to the length direction of the developing roller, and the separation member can move with the movement of the support shaft; The separating member can rotate relative to the supporting shaft under the driving of the supporting shaft, or can move relative to the supporting shaft in a direction perpendicular to the first direction, so as to drive the developing roller to move in a direction away from the photosensitive drum.

2. The developing cartridge according to claim 1, characterized in that: The separation assembly further includes a first elastic member, and the first elastic member is used to restore the support shaft so as to move the support shaft in the opposite direction along the first direction.

3. The developing cartridge according to claim 1, characterized in that: The box body is also provided with a mounting groove and / or a mounting hole, and the box body is also provided with a support member near the mounting groove and / or the mounting hole; The support shaft is accommodated in the mounting groove and / or the mounting hole, the separation member is connected to the support member, and the end of the separation member away from the support member abuts against the abutment member of the electronic imaging device.

4. The developing cartridge according to claim 3, characterized in that: The support shaft comprises a support shaft body and a separation portion, wherein the separation portion is a groove or a protrusion formed on the support shaft body, and the support member is a limiting column extending from the surface of the box body; The separation member comprises a supporting portion and a mounting portion, wherein one end of the supporting portion away from the mounting portion is in contact with the supporting member, and one end of the mounting portion close to the supporting portion is provided with a first connecting hole along the radial direction of the support shaft; One end of the mounting portion close to the abutting portion is sleeved on the limiting column through the first connecting hole, and one end of the mounting portion away from the abutting portion is sleeved or clamped on the separating portion; When the support shaft moves relative to the box body along the first direction under the action of an external force, the separation portion can drive the separation member to rotate around the limiting column, so that the box body moves in a direction away from the abutting member.

5. The developing cartridge according to claim 4, characterized in that: A second connection hole or a clamping groove is provided at one end of the mounting portion away from the abutting portion along the axial direction of the support shaft, and the mounting portion can be sleeved or clamped on the separation portion through the second connection hole or the clamping groove.

6. The developing cartridge according to claim 3, characterized in that: The support shaft comprises a support shaft body and a separation portion, and the separation portion is a groove or a protrusion formed on the support shaft body; The separation member includes a fixed member and a movable member, the fixed member is fixedly connected to the support member, the fixed member is provided with a receiving groove along the radial direction of the support shaft, and the movable member is received in the receiving groove; An inclined wedge portion is provided at one end of the movable member close to the box body. When the support shaft moves relative to the box body along the first direction under the action of an external force, the separating portion drives the inclined wedge portion to move, so that the box body moves in a direction away from the abutting member.

7. The developing cartridge according to claim 6, wherein: The support member includes a first rib and a second rib arranged on both sides of the mounting groove along the radial direction of the support shaft, and a third connecting hole is respectively provided on the first rib and the second rib. A clamping portion is provided at one end of the fixing member close to the box body, and the clamping portion is clamped and matched with the third connecting hole.

8. The developing cartridge according to claim 6, wherein: The separating member further comprises a second elastic member, and the second elastic member is arranged between the fixing member and the movable member.

Images