Processing box

Abstract

The utility model discloses a processing box, which comprises a frame, a photosensitive drum; a developing roller; the driving force receiving part comprises a driving force receiving protrusion capable of receiving driving force from a driving force output part in the imaging equipment and a driving force receiving gear capable of rotating along with the driving force receiving protrusion; the developing roller gear is arranged at one end of the developing roller in a first direction and can drive the developing roller to rotate; the driving force receiving gear is meshed with the developing roller gear, the driving force receiving part can drive the photosensitive drum and the developing roller to rotate, and the bearing part is arranged at one tail end of the frame in the first direction and can rotatably support the driving force receiving part. The periphery of the bearing part is provided with an outer contour surface, the distance between the outer contour surface and the rotation axis of the driving force receiving part is P, and P is larger than 8 mm and smaller than 16 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a processing box. Background Art

[0002] The prior art discloses an imaging device and a processing box installed in the imaging device, wherein the imaging device includes a driving force output member capable of outputting power, wherein the driving force output member includes a driving force output member recess and driving force output member gear teeth. The existing processing box includes a driving force receiving protrusion and a gear which are arranged at one end of a housing and are not coaxial. When the processing box is installed in the imaging device, the driving force receiving protrusion can be combined with the driving force output member recess to receive driving force to drive the photosensitive drum to rotate, and the gear can be meshed with the driving force output member gear teeth to receive driving force to drive the developing roller to rotate.

[0003] Although the above-mentioned processing box can receive the driving force of the imaging device and work normally, the driving force receiving protrusion and the gear of the above-mentioned processing box need to be respectively meshed with the recessed portion of the driving force output member and the gear teeth of the driving force output member. Otherwise, the processing box cannot work normally. This requires that the relative position accuracy of the driving force receiving protrusion and the gear in the processing box needs to be higher, which also makes the manufacturing accuracy and assembly accuracy requirements of the processing box higher. Therefore, once the deviation is too large, this structure is very likely to interfere with the imaging device during the installation process of the processing box, making the installation of the processing box difficult. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a new processing box, which is mainly achieved through the following technical solutions:

[0005] A processing box, comprising:

[0006] A frame having a first end and a second end separated from each other in a first direction;

[0007] an agitator rotatably supported on the frame;

[0008] a photosensitive drum rotatably supported on the frame and rotatable about a photosensitive drum rotation axis extending along the first direction;

[0009] A developing roller is rotatably supported on the frame and is rotatable about a developing roller rotation axis;

[0010] A driving force receiving member, arranged at the first end of the frame in the first direction, the rotation axis of the driving force receiving member is coaxial with the rotation axis of the photosensitive drum, and the driving force receiving member includes a driving force receiving protrusion and a driving force receiving gear that can rotate together with the driving force receiving protrusion;

[0011] A developing roller gear is arranged at one end of the developing roller in a first direction;

[0012] The driving force receiving gear is meshed with the developing roller gear, and the driving force receiving member can drive the photosensitive drum and the developing roller to rotate; the processing box also includes a control protrusion and a bearing part that can rotatably support the driving force receiving member, and the control protrusion and the bearing part are arranged at the first end of the frame in the first direction, and a limiting groove is formed between the control protrusion and the bearing part in the first direction, and the limiting groove is open to the outside on the side of the downstream side of the installation direction of the processing box in the direction perpendicular to the first direction; the bearing part has an outer contour surface in the direction perpendicular to the first direction, and a virtual line is drawn to connect the rotation axis of the photosensitive drum and the rotation axis of the developing roller, the agitator is located on the second side of the virtual line, and the outer contour surface is located on the first side of the virtual line, and the distance between the outer contour surface and the rotation axis of the driving force receiving member is P, wherein 8mm<P<16mm.

[0013] Furthermore, 12mm<P<15mm.

[0014] Furthermore, the outer contour surface is configured as an arc surface.

[0015] Furthermore, in the first direction, the control protrusion has a first surface and a second surface relative to each other, the first surface is arranged to face the second end of the frame, and in the first direction, there is a distance L between the protruding end of the driving force receiving protrusion and the first surface of the control protrusion, wherein 4mm≦L≦5.5mm.

[0016] Furthermore, 4.3mm≦L≦5mm.

[0017] Furthermore, the frame also includes an end surface arranged at the first end and a protrusion protruding outward from the end surface toward the second end away from the frame, and in the installation direction of the processing box, the protrusion is arranged on the upstream side of the frame, and the distance between the protruding end of the protrusion and the end surface in the first direction is H, wherein H is less than 7.5 mm.

[0018] Furthermore, 5.5mm<H<7mm.

[0019] Furthermore, the processing box also includes a first electrode, the first electrode has a first electrical contact surface that contacts the first contact of the imaging device, the first electrical contact surface is located at the first end of the frame in the first direction, and the first electrode can be electrically connected to the developing roller; the processing box also includes a second electrode, the second electrode has a second electrical contact surface that contacts the second contact of the imaging device, the second electrical contact surface is located at the first end of the frame in the first direction, and the second electrode can be electrically connected to the photosensitive drum; the first contact surface is located on the first side of the virtual line, and the second electrical contact surface is located on the second side of the virtual line.

[0020] Further, the regulating protrusion is movable relative to the developing roller in a direction perpendicular to the first direction.

[0021] The processing box of the utility model eliminates the gears in the prior art and can drive the processing box to work only by relying on the combination of the driving force receiving protrusion and the driving force output member. Compared with the prior art, the manufacturing and installation precision required for the processing box are lower, which greatly improves the success rate of the combination of the driving force output member and the processing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram from a first angle during the process of installing the process cartridge to the imaging device in Embodiment 1 of the utility model;

[0023] Figure 2 It is a second angle schematic diagram of the process of installing the process cartridge to the imaging device in Embodiment 1 of the utility model;

[0024] Figure 3 This is a schematic diagram of the processing box in Embodiment 1 of the utility model from a first angle;

[0025] Figure 4 This is a second angle schematic diagram of the process box in Embodiment 1 of the utility model;

[0026] Figure 5 This is a schematic diagram of the processing box in Embodiment 1 of the utility model from a third angle;

[0027] Figure 6 This is a schematic diagram of the processing box in Embodiment 1 of the utility model from a fourth angle;

[0028] Figure 7 It is a schematic diagram of a processing box in Embodiment 2 of the present utility model. DETAILED DESCRIPTION

[0029] Example 1

[0030] In the following description, the direction in which the photosensitive drum rotation axis of the photosensitive drum 139 extends is a first direction, the processing box 150 or the frame 151 has a first end and a second end relative to each other in the first direction, and the driving force receiving protrusion 141 is located at the first end of the frame 151 in the first direction; the processing box 150 can be installed in the imaging device roughly along a second direction intersecting the first direction.

[0031]

Overall structure of imaging equipment

[0032] like Figure 1-2 As shown, the imaging device includes a pair of side plates 20 respectively arranged at both ends of the imaging device in a first direction, and a receiving portion 30 capable of receiving a processing cartridge 150 is formed between the pair of side plates 20. The processing cartridge 150 can be installed in the receiving portion 30 in the imaging device along a predetermined track along a second direction; the imaging device also includes a driving gear 9 and a driving force output member 10 meshing with the driving gear 9 and capable of outputting a rotational driving force. The driving force output member 10 is movably arranged in the imaging device in the first direction. Specifically, the driving force output member 10 has a retracted position and an extended position in the first direction. The driving force output member 10 in the extended position Compared with the power output member 10 in the retracted position, which is closer to the driving force receiving member 140 of the processing box 150 in the first direction (described in detail below), after the imaging device is started, the driving force output member 10 can be driven to rotate by the driving gear 9 also located in the imaging device and the driving force output member 10 moves from the retracted position to the extended position; the driving force output member 10 in the extended position can be combined with the driving force receiving member 140 of the processing box 150 and can transmit the rotational driving force to the processing box 150, and the driving force output member 10 includes a driving force output member recess 11, which has a shape of a substantially equilateral triangle.

[0033]

Processing box

[0034] like Figure 3-6 As shown, a processing box 150 in the present invention is shown, and the following will be combined with Figure 1-2 The process cartridge 150 is described in detail; the process cartridge 150 is detachably installed in the above-mentioned imaging device, and the process cartridge 150 includes a frame 151 that can accommodate developer, and a developing roller 138, a photosensitive drum 139 and an agitator (not shown) rotatably supported on the frame 151, wherein the developing roller 138 can carry developer and can rotate around a developing roller rotation axis extending in a first direction, the photosensitive drum 139 can generate an electrostatic latent image and can rotate around a photosensitive drum rotation axis extending in the first direction, the developer carried on the developing roller 138 can be transported to the photosensitive drum 139 and used to develop the electrostatic latent image on the photosensitive drum 139, and the agitator 132 can agitate the developer accommodated in the frame 151 and can rotate around the agitator rotation axis extending in the first direction;

[0035] The processing box 100 also includes a first electrode 171, which has a first electrical contact surface 171a that contacts the first contact of the imaging device, and the first electrical contact surface 171a is located at the first end of the frame 151 in the first direction, and the first electrode 171 can be electrically connected to the developing roller 138; the processing box 100 also includes a second electrode 172, which has a second electrical contact surface 172a that contacts the second contact of the imaging device, and the second electrical contact surface 172a is located at the first end of the frame 151 in the first direction, and the second electrode 172 can be electrically connected to the photosensitive drum 139; a virtual line W is drawn connecting the rotation axis of the photosensitive drum and the rotation axis of the developing roller, the first contact surface 171a is located on the first side of the virtual line W, and the second electrical contact surface 172a is located on the second side of the virtual line W.

[0036] The processing box 150 also includes a driving force receiving member 140, a developing roller gear 143 and an agitator gear (not shown) located at the first end of the frame 151, wherein the driving force receiving member 140 is installed at one end of the photosensitive drum 139, and the rotation axes of the two are coaxially arranged, and the driving force receiving member 140 includes an integrally formed driving force receiving protrusion 141 and a driving force receiving gear 142, and the driving force receiving protrusion 141 has a shape of a substantially equilateral triangle, and can be combined with the driving force output member recess 11 of the driving force output member 10 in the extended position and the straightening position so that the driving force receiving member 140 is driven to rotate; the developing roller gear 143 is installed at one end of the developing roller 138 and meshes with the driving force receiving gear 142 to receive the rotational driving force transmitted from the driving force receiving gear 142, and then the developing roller gear 143 can drive the developing roller 138 to rotate, and the agitator gear is installed at one end of the agitator and receives the rotational driving force transmitted from the developing roller gear 143 through at least one transmission wheel, and then the agitator gear can drive the agitator to rotate. That is to say, the processing box 150 can drive the photosensitive drum 139, the developing roller 138, and the agitator to rotate only through the rotational driving force received by the driving force receiving member 140. Compared with the prior art, it simplifies the structure of the processing box 150 and reduces the precision required for the coupling of the processing box 150 with the imaging device; and the first end of the frame 151 also includes a guide protrusion 144 protruding outward from the outer surface of the frame 151. The guide protrusion 144 can be used to combine with the track in the imaging device during the process of installing the processing box 150 to the imaging device, so as to facilitate the guided installation of the processing box 150.

[0037] Furthermore, since the driving force output member 10 is not completely fixed in the direction intersecting with the first direction, it will have a slight radial swing under the action of gravity or in the process of being driven to rotate. Therefore, there is a possibility that the driving force output member 10 will not be extended in a state where its rotation axis is completely coincident with the rotation axis of the photosensitive drum during the extension process. Then, when the driving force output member 10 is extended in this state, the driving force output member recess 12 and the driving force receiving protrusion 141 may interfere with each other during the combination process, making it difficult or even impossible for the two to be combined. Therefore, in order to solve the above-mentioned problem, on the first aspect, the processing box 150 is also provided with a control protrusion 160, which is arranged at the first end of the frame 151 and is constructed as a protruding rib protruding from the frame 151 in a direction perpendicular to the first direction. In the direction intersecting with the first direction, the free end of the control protrusion 160 has There are a first surface 162 and a second surface 163 opposite to each other, wherein the first surface 162 is closer to the second end of the processing box 150 than the second surface 163, and in the first direction, the first surface 162 is farther away from the second end of the processing box 150 than the driving force receiving protrusion; and the controlling protrusion 160 has a controlling surface 162 facing the rotation axis of the photosensitive drum 139, and the controlling surface 162 has a basic structure approximating to a circular arc surface, and the controlling surface 162 can be used to limit the inclination of the driving force output member 10 within a certain range. Specifically, when the rotation axis of the driving force output member 10 is tilted to a certain extent relative to the first direction during the extension process, the controlling surface 162 can limit the driving force output member 10, thereby suppressing the increase of its inclination, which will help to improve the success rate of the combination of the driving force output member 10 and the driving force receiving member 140.

[0038] Secondly, the distance between the driving force receiving protrusion 141 and the power output member recess 11 in the first direction should be appropriate. When the first surface 162 of the control protrusion 160 is used as the reference plane, in the first direction, the distance L1 between the protruding end of the driving force receiving protrusion 141 and the first surface 162 should be greater than or equal to 4 mm and less than or equal to 5.5 mm, that is, 4 mm≦L≦5.5 mm. Within this range, the driving force receiving protrusion 141 can be successfully combined with the driving force output member recess 11 during the extension of the power output member 10. If L is less than 4 mm, that is, the driving force receiving protrusion 141 will be further close to the driving force output member recess 11 of the driving force output member 10 in the first direction, then the processing box 150 is installed on the imaging device. During the installation process, the driving force receiving protrusion 141 will interfere with the driving force output member 10 in the installation direction of the processing box 150 (i.e., the second direction), thereby causing the processing box 150 to fail to be successfully installed in the imaging device. If the terminal user forcibly installs it, it is easy to damage the driving force receiving protrusion 141 and the driving force output member 10. However, if L is greater than 5.5mm, that is, the driving force receiving protrusion 141 in the first direction will be further away from the driving force output member 10. At this time, the driving force receiving protrusion 141 is too far away from the driving force output member recess 12, and there is a probability that the driving force receiving protrusion 141 will slip or even fail to engage with the driving force output member recess 11 after the extension in the first direction. In this regard, these two situations are obviously undesirable. Furthermore, it is preferably 4.3mm≦L≦5mm. At this position, the driving force receiving protrusion 141 is in an optimal position to engage with the driving force output member recess 11.

[0039] Thirdly, the frame 151 includes a bearing portion 153 that rotatably supports the driving force receiving member 140. The bearing portion 153 is arranged at the first end of the frame 151 in the first direction, and the bearing portion 153 is arranged at the downstream end of the frame 151 in the installation direction of the processing box 150 (i.e., the second direction). A limiting groove 164 is formed between the control protrusion 160 and the bearing portion 153 in the first direction. The limiting groove 164 is arranged to be connected to the outside on one side facing the downstream side of the installation direction of the processing box 100. When the processing box 150 is installed in the imaging device, the limiting groove 164 can be combined with the positioning rib (not shown) of the imaging device to limit it to a certain extent. The position of the processing box 150 in the first direction prevents the processing box 150 from being displaced in the first direction, which affects the coupling stability between the driving force receiving protrusion and the driving force output recess 11; the limiting groove 164 of the above-mentioned processing box 150 still has a certain gap in the first direction after being combined with the positioning rib of the imaging device. Therefore, in order to further improve the positioning stability of the processing box in the first direction, the processing box 150 also includes a first protrusion 144 arranged at the first end of the frame 150, and the first protrusion 144 is constructed as a protrusion protruding outward in the first direction from the end surface 145 of the first end of the frame 151. The first protrusion 144 can be used to install the processing box 150 to the imaging device. During the installation process of the imaging device, the first protrusion 144 cooperates with the track groove (not shown) of the imaging device to guide the processing box 1500 to be installed in the imaging device according to the predetermined installation path, and the first protrusion 144 can also be used to limit the processing box 150 in the first direction. To achieve this technical effect, in the first direction, the distance between the protruding end of the first protrusion 144 and the end surface 145 is defined as H, H < 7.5mm, to avoid that when H is set too large, after the first protrusion 144 abuts against the side wall of the imaging device, the processing box 150 is forced to be positioned closer to the other end of the imaging device, causing the driving force receiving member 140 of the processing box 150 to be away from the driving force output member 10 of the imaging device, which may There may be a problem that the driving force output member 10 cannot contact the driving force receiving member 140 after being extended, and the two cannot be coupled, or even if they are in contact, the contact amount between the two is insufficient, resulting in a problem of low coupling stability. In some cases, the first protrusion 144 can be cancelled, and the processing box 150 can be guided and installed in the imaging device by relying on the second protrusion 146 protruding outward from the end surface 145 which is also arranged at the first end of the frame 151. Therefore, the first protrusion 144 is not necessary, but the processing box 150 in the utility model adopts a preferred embodiment to improve the guiding effect of the processing box 150; preferably, 5.5mm<H<7mm.

[0040] It is worth mentioning that the outer periphery of the bearing portion 153 has an outer contour surface 152. In order to prevent the outer contour surface 152 from contacting or contacting too much with the blocking protrusion (not shown) of the imaging device after the processing box 150 is installed in the imaging device, the rotation axis of the driving force receiving member 140 of the processing box 150 is not coaxial with the rotation axis of the driving force output member 10, which leads to a decrease in the coupling rate between the two or even failure to couple; therefore, the position of the outer contour surface 152 on the bearing portion 153 in the installation direction of the processing box 150 is crucial. Therefore, in order to improve the coupling success rate between the driving force receiving member 140 and the driving force output member 10, it is necessary to keep the outer contour surface 152 as far away from the blocking protrusion of the imaging device as possible. Specifically, The outer contour surface 152 is constructed as a roughly arc-shaped surface, and the distance between the outer contour surface 152 and the rotation axis of the driving force receiving member 140 is defined as P, wherein 8mm<P<16mm, preferably, 12mm<P<15mm. Within the above range, the outer contour surface 152 can be as far away from the blocking protrusion of the imaging device as possible, so that the driving force receiving member 140 and the driving force output member 10 can be roughly coaxially arranged under the positioning of other positioning parts, and have a good coupling effect, thereby avoiding the problem of the driving force receiving member 140 and the driving force output member 10 being difficult to couple due to the non-coaxiality caused by P being too large, and also avoiding the problem of P being too small to affect the support and positioning of the driving force receiving member 140 by the bearing part 153.

[0041] Example 2

[0042] like Figure 7 As shown, the second embodiment of the utility model will be introduced next. This embodiment 2 provides an imaging device and a processing box 200. The same parts as the imaging device and the processing box in the above-mentioned embodiment 1 will not be repeated in this embodiment 2. The difference is that the power output member 10 of the imaging device in this embodiment is tiltable. Specifically, when the processing box 200 is not installed in the imaging device, the rotation axis of the power output member 10 is tilted relative to the first direction and is in an inclined position. When the processing box 200 is installed in the imaging device and the door cover is in the closed position and the imaging device is in the working process, the rotation axis of the power output member 10 is tilted relative to the first direction. Correspondingly, the processing box 200 is different from the above-mentioned embodiment 1 in that the control protrusion 260 installed at the first end of the frame 251 is movable relative to the developing roller (not shown) in a direction intersecting the first direction. Specifically, the control protrusion 260 is movable between a first position close to the developing roller and a second position away from the developing roller. The control protrusion 260 is used to adjust the angle of the power output member 10 during the installation process of the processing box 200, so as to adjust the power output member 10 from the inclined position to the straightening position, so as to ensure the correct coupling of the driving force receiving member 240 with the power output member 10.

[0043] The processing box of the utility model eliminates the gears in the prior art and can drive the processing box to work only by relying on the combination of the driving force receiving protrusion and the driving force output member. Compared with the prior art, the manufacturing and installation precision required for the processing box are lower, which greatly improves the success rate of the combination of the driving force output member and the processing box.

Claims

1. A processing box, comprising: A frame having a first end and a second end separated from each other in a first direction; an agitator rotatably supported on the frame; a photosensitive drum rotatably supported on the frame and rotatable about a photosensitive drum rotation axis extending along the first direction; A developing roller is rotatably supported on the frame and is rotatable about a developing roller rotation axis; A driving force receiving member, arranged at the first end of the frame in the first direction, the rotation axis of the driving force receiving member is coaxial with the rotation axis of the photosensitive drum, and the driving force receiving member includes a driving force receiving protrusion and a driving force receiving gear that can rotate together with the driving force receiving protrusion; A developing roller gear is arranged at one end of the developing roller in a first direction; It is characterized in that the driving force receiving gear is meshed with the developing roller gear, and the driving force receiving member can drive the photosensitive drum and the developing roller to rotate; the processing box also includes a control protrusion and a bearing part that can rotatably support the driving force receiving member, in the first direction, the control protrusion and the bearing part are arranged at the first end of the frame, and a limiting groove is formed between the control protrusion and the bearing part in the first direction, and the limiting groove is open outwardly on the side of the downstream side of the installation direction of the processing box in a direction perpendicular to the first direction; the bearing part has an outer contour surface in a direction perpendicular to the first direction, and a virtual line is drawn to connect the rotation axis of the photosensitive drum and the rotation axis of the developing roller, the agitator is located on the second side of the virtual line, and the outer contour surface is located on the first side of the virtual line, and the distance between the outer contour surface and the rotation axis of the driving force receiving member is P, wherein 8mm<P<16mm.

2. The process cartridge according to claim 1, wherein: 12mm<P<15mm.

3. The process cartridge according to claim 1, wherein: The outer contour surface is configured as an arc-shaped surface.

4. The process cartridge according to claim 1, wherein: In the first direction, the control protrusion has a first surface and a second surface relative to each other, the first surface is arranged to face the second end of the frame, and there is a distance L between the protruding end of the driving force receiving protrusion and the first surface of the control protrusion in the first direction, wherein 4mm≦L≦5.5mm.

5. The process cartridge according to claim 4, wherein: 4.3mm≦L≦5mm.

6. The process cartridge according to claim 1, wherein: The frame also includes an end surface arranged at the first end and a protrusion protruding outward from the end surface toward the second end away from the frame, and in the installation direction of the processing box, the protrusion is arranged on the upstream side of the frame, and the distance between the protruding end of the protrusion and the end surface in the first direction is H, wherein H is less than 7.5 mm.

7. The process cartridge according to claim 6, wherein: 5.5mm<H<7mm.

8. The process cartridge according to claim 1, wherein: The processing box also includes a first electrode, which has a first electrical contact surface that contacts the first contact of the imaging device, and the first electrical contact surface is located at the first end of the frame in the first direction, and the first electrode can be electrically connected to the developing roller; the processing box also includes a second electrode, which has a second electrical contact surface that contacts the second contact of the imaging device, and the second electrical contact surface is located at the first end of the frame in the first direction, and the second electrode can be electrically connected to the photosensitive drum; the first electrical contact surface is located on the first side of the virtual line, and the second electrical contact surface is located on the second side of the virtual line.

9. The process cartridge according to claim 1, wherein: The regulating protrusion is movable relative to the developing roller in a direction perpendicular to the first direction.

Images