Developing box

Abstract

The utility model discloses a developing box, which is detachably arranged in a drum box with an opening part, and comprises a shell, a first side, a second side, a third side and a fourth side, a developing roller; the chip is provided with an electric contact surface, and the electric contact surface is located on the first side of the shell in the first direction; a limiting protrusion; when the developing box is mounted on the drum box, the limiting bulge is matched with the opening part to limit the movement of the developing box relative to the drum box in the first direction; in the second direction, the electric contact surface is closer to the fourth side of the shell relative to the third side of the shell; according to the developing box disclosed by the utility model, the movement of the developing box relative to the drum box is limited through the limiting bulge, so that the relative position of the electric contact surface and the drum box is ensured, and when the drum box and the developing box are arranged on the imaging device together, the electric contact surface can be accurately connected with the imaging device, so that the use stability of the imaging device is ensured.

Description

Technical Field

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

[0002] The processing box is a consumable material used in an electronic photographic imaging device. In the prior art, the processing box includes a drum box and a developer box with a chip. When in use, the user first installs the developer box into the drum box, and then installs the two together into the electronic photographic imaging device for imaging. The developer box is used to store the developer; the chip is used to store the model, capacity and other information of the developer box. The chip is installed on the developer box through a chip rack, and the chip has an electrical contact surface for electrical connection with the electronic photographic imaging device. The drum box includes a drum frame for accommodating the developer box, and a photosensitive drum installed on the front side of the drum frame in the front-to-back direction; a developing roller is provided on the front side of the developer box in the front-to-back direction; when the developer box is installed on the drum box, the photosensitive drum contacts the developing roller, so that the developer inside the developer box can be transported to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum.

[0003] In the prior art, the drum box also includes a forced pushing portion for making the photosensitive drum of the developer box contact the developing roller. At the same time, the forced pushing portion also has a limiting function on the developer box, and can limit the relative movement between the developer box and the drum box in the front-to-back direction; however, in the installation of the developer box and the drum box, there is currently a lack of means to limit the relative movement of the developer box and the drum box in the left-right direction. During the installation of the developer box to the drum box, deviations in the left-right direction are likely to occur, which leads to greater deviations in the left-right direction when the two are installed together in the electronic photographic imaging device, thereby affecting the connection between the electrical contact surface and the electronic photographic imaging device, so that the electronic photographic imaging device cannot be used. Utility Model Content

[0004] Therefore, the utility model provides a developing box to solve the above technical problems, which is mainly achieved through the following technical solutions:

[0005] A developing box is detachably mounted in a drum box having an opening, and the developing box comprises:

[0006] A housing for containing a developer, the housing having a first side and a second side separately arranged in a first direction, and a third side and a fourth side separately arranged in a second direction intersecting the first direction;

[0007] a developing roller rotatable about a developing roller axis extending in a first direction, the developing roller being closer to a third side of the housing relative to a fourth side of the housing in a second direction;

[0008] A chip having an electrical contact surface, the electrical contact surface being located on a first side of the housing in a first direction;

[0009] The limiting protrusion is close to the first side of the shell in the first direction, and the limiting protrusion is located on the third side of the shell in the second direction;

[0010] When the developing cartridge is mounted on the drum cartridge, the limiting protrusion cooperates with the opening to limit the movement of the developing cartridge relative to the drum cartridge in a first direction;

[0011] In the second direction, the electrical contact surface is closer to the fourth side of the housing than to the third side of the housing.

[0012] Further, in the first direction, the electrical contact surface is farther away from the second side of the housing than the limiting protrusion.

[0013] Furthermore, it also includes a protective cover, which is located on the first side of the shell in the first direction, and the limiting protrusion is extended from the bottom of the protective cover in the second direction.

[0014] Furthermore, it also includes a chip frame, which is used to support the chip, and the chip frame is extended in the first direction from the outer side of the protective cover.

[0015] Further, in a third direction intersecting the first direction and the second direction, the electrical contact surface is exposed on the top of the chip frame.

[0016] Furthermore, the third direction intersects with the first direction and the second direction. When the developing box is positioned so that: in the third direction, the limiting protrusion is located below the shell, and the limiting protrusion is located below the rotation axis of the developing roller, the electrical contact surface in the third direction is arranged to face above the shell.

[0017] Further, the developing roller is closer to the limiting protrusion than the electrical contact surface in the second direction;

[0018] In the second direction, there is a first distance between the developing rollers and a second distance between the developing rollers and the electrical contact surface, wherein the first distance is smaller than the second distance.

[0019] Furthermore, it also includes a bearing plate for rotatably supporting the developing roller, the bearing plate is located on the first side of the shell in the first direction, and the limiting protrusion is extended from the bottom of the bearing plate in the second direction.

[0020] Further, when the developing box is installed to the drum box, the limiting protrusion is at least partially located inside the opening, thereby limiting the movement of the developing box relative to the drum box in the first direction.

[0021] Furthermore, it also includes a coupling gear, which can receive the driving force outside the developing box and drive the developing roller to rotate;

[0022] In the second direction, the coupling gear is located between the limiting protrusion and the electrical contact surface.

[0023] Beneficial effects:

[0024] After the developer box is installed to the drum box, the limiting protrusion of the developer box is installed in the opening. At this time, in the left-right direction, the two sides of the limiting protrusion are in contact with the two side walls of the opening, thereby limiting the movement of the limiting protrusion relative to the opening in the left-right direction. Correspondingly, in the left-right direction, the limiting protrusion limits the movement of the developer box relative to the drum box, thereby ensuring the relative position of the electrical contact surface and the drum box. When the drum box and the developer box are installed to the imaging device together, the electrical contact surface can accurately establish connection with the imaging device, thereby ensuring the stability of the use of the imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the developing box of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the developing box of the utility model from another angle;

[0027] Figure 3 It is a cross-sectional view of the developing box of the utility model in the vertical direction;

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the drum box of the utility model;

[0029] Figure 5 It is a partially exploded schematic diagram of the protective cover and powder bin of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the protective cover and the chip frame of the utility model;

[0031] Figure 7 It is a structural schematic diagram of a protective cover and a chip frame in another embodiment of the utility model;

[0032] Figure 8 This is a schematic structural diagram of the protective cover and the chip frame of the utility model from another angle;

[0033] Fig. 9 It is a schematic diagram of the process of installing the developer cartridge to the drum cartridge of the utility model;

[0034] Fig.10 It is a schematic diagram of another angle during the installation of the developer cartridge to the drum cartridge of the utility model;

[0035] Fig.11 It is a partial structural schematic diagram of the utility model in a state where a developing box and a drum box are connected. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and technical effect of the embodiment of the utility model clearer, the technical scheme of the processing box of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is only a preferred embodiment of the utility model, not all embodiments. Based on the embodiment of the utility model, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0037] In the following description, when referring to the direction of the developing box 100, the axial direction of the developing roller 120 is taken as the first direction (left-right direction), and the protective cover 112 is located on the left side of the developing roller 120; the second direction (front-back direction) is defined as the arrangement direction of the developing roller axis and the stirring frame axis, and the developing roller 120 is located on the front side of the stirring frame 140; the third direction (up-down direction) is the direction intersecting the first direction and the second direction; preferably, the up-down direction is a direction orthogonal to the left-right direction and the up-down direction.

[0038] like Figure 1-3 As shown, a developing box 100 of an embodiment of the utility model is shown, which can be installed in a detachable manner into a drum box 50, and the two can be installed as a whole into an electronic photographic imaging device (hereinafter referred to as "imaging device"), and the imaging device can complete the imaging operation under the cooperation of the two; the developing box 100 includes a shell 110 as a main body, and the shell 110 includes a left side and a right side separately arranged in the left-right direction, a front side and a rear side separately arranged in the front-to-back direction, and a top and a bottom separately arranged in the up-down direction. The shell 110 includes a powder bin 111 for accommodating the developer, and the shell 110 also includes a protective cover 112 detachably installed on the left side of the powder bin 111 in the left-right direction; the powder bin 111 includes a handle 111a for the user to hold; the protective cover 112 can cover at least a part of the gear train located on one side of the powder bin 111. Preferably, in the present embodiment, the above-mentioned gear train and protective cover 112 are located on the left side of the powder bin 111 in the left-to-right direction. As shown Figure 5As shown, the gear system includes but is not limited to a coupling gear 150 for receiving a driving force from an imaging device, a developing roller gear 121, a powder feeding roller gear 131, and a stirring frame gear 141; the coupling gear 150 can be meshed with the developing roller gear 121 and the powder feeding roller gear 131 to drive the developing roller gear 121 and the powder feeding roller gear 131 to rotate; the coupling gear 150 is meshed with the stirring frame gear 141 through an idler gear 151, so that the coupling gear 150 drives the stirring frame gear 141 to rotate through the idler gear 151. The developing box 100 also includes a developing roller 120, a powder feeding roller 130, and a stirring frame 140, and the left ends of the developing roller 120, the powder feeding roller 130, and the stirring frame 140 are respectively connected to the developing roller gear 121, the powder feeding roller gear 131, and the stirring frame gear 141, and each gear drives the developing roller 120, the powder feeding roller 130, and the stirring frame 140 to rotate along their respective axes extending in the left and right directions.

[0039] The developing roller 120 is arranged at the front side of the shell 110 in the front-to-back direction. When the developing box 100 is installed on the drum box 50, the developing roller 120 contacts the photosensitive drum 52 in the drum box 50; when the developing box 100 and the drum box 50 are installed together in the imaging device, the coupling gear 150 can be connected to the driving component inside the imaging device to receive the driving force of the imaging device, and the coupling gear 150 can respectively drive the developing roller 120, the powder feeding roller 130 and the stirring frame 140 to rotate to perform the imaging operation; during the imaging operation, the stirring frame 140 is used to stir the developer inside the shell 110, and at the same time transport the developer to the powder feeding roller 130, and the powder feeding roller 130 then transports the developer to the developing roller 120, and the developing roller 120 transfers the developer it carries to the photosensitive drum 52 to develop the electrostatic latent image on the photosensitive drum 52.

[0040] Optionally, the gear train further includes a counting gear 171, which is meshed and connected with the stirring frame gear 141 and can rotate following the rotation of the stirring frame gear 141, and the counting gear 171 is constructed as a half-tooth gear structure; the developing box 100 also includes a transmission rod 172, an elastic member 173 and a toggle protrusion 170, the transmission rod 172 spans the left side and the right side of the shell 110 in the left and right directions, and the toggle protrusion 170 is arranged on the right side of the transmission rod 172, that is, the toggle protrusion The protrusion 170 is arranged on the right side of the shell 110, and a plurality of protrusions extend from the side of the counting gear 171 close to the powder bin 111 in the left-right direction. When the counting gear rotates, the protrusion applies a driving force to the right in the left-right direction to the transmission rod 172, and the elastic member 173 applies a force to the left in the left-right direction to the transmission rod 172. The setting of the protrusion and the elastic member 173 drives the protrusion 170 to move back and forth in the left-right direction to move the detection body (not shown) inside the imaging device to complete the counting.

[0041] The developing box 100 is also provided with an electrode 160, which includes an electrical contact portion 161 arranged on the right side of the developing box 100. The electrical contact portion 161 can be electrically connected to a power supply component (not shown) inside the imaging device. The electrode 160 can supply power to the developing roller 120 and the powder feeding roller 130 through the electrical connection between the electrical contact portion 161 and the power supply component to ensure that the developer can be stably transported.

[0042] like Figure 4 As shown in the figure, a drum box 50 matched with the developer box 100 of the utility model is shown, and the drum box 50 includes a drum frame 51, a photosensitive drum 52, an opening 53, a locking portion 54 and a pushing portion 55; the drum frame 51 is used to accommodate the developer box 100, the photosensitive drum 52 is used to receive a signal from the imaging device and form an electrostatic latent image, and the photosensitive drum 52 can be rotatably supported on the drum frame 51 around a photosensitive drum axis extending in the left and right directions, and the pushing portion 55 is arranged at the rear of the drum frame 51. When the developer box 100 is installed on the drum box 50, the pushing portion 55 is used to apply a forward pushing force to the developer box 100, so that the developer roller 120 keeps in contact with the photosensitive drum 52. The locking portion 54 is arranged on the upper left side of the drum frame 51, and is used to lock the developer box 100 inside the drum frame 51, so as to prevent the developer box 100 from falling off.

[0043] The opening 53 is located at the bottom of the drum frame 51 near the left side and the front side, and is configured in a "U" shape, and includes two side surfaces 53a and 53b in the left-right direction. Further, the opening 53 includes an opening 53c facing the rear side of the drum frame 51, and specifically, the opening 53c is configured in an "eight" shape facing the rear of the drum frame 51 in the front-to-back direction; during the installation of the developer cartridge 100 to the drum cartridge 50, the later-described limiting protrusion 210 contacts the opening 53c of the opening 53, and under the guidance of the opening 53c and the two side surfaces 53a and 53b, it actually enters the interior of the opening 53, thereby making it more convenient to install the developer cartridge 100 to the drum cartridge 50.

[0044] like Figure 5-6As shown, the developer cartridge 100 includes a limiting protrusion 210, which is disposed at the front side of the housing 110 in the front-to-back direction, and the limiting protrusion 210 extends from the housing 110 in the front-to-back direction; in the left-to-right direction, the limiting protrusion 210 is located at the left side of the housing 110. Preferably, the limiting protrusion 210 extends from the bottom of the protective cover 112 in the front-to-back direction, and the limiting protrusion 210 is located at the front side of the protective cover 112. The limiting protrusion 210 has a connecting portion 211 and a limiting portion 212, which are arranged in the front-to-back direction, and the limiting portion 212 is farther away from the coupling gear 150 than the connecting portion 211 in the front-to-back direction. The limiting portion 212 has two contact surfaces 210a and 210b spaced apart from each other in the left-right direction. When the developing box 100 is installed to the drum box 50, the contact surfaces 210a and 210b respectively contact the two side surfaces 53a and 53b in the drum box 50, thereby limiting the movement of the developing box 100 in the left-right direction.

[0045] like Figure 6 As shown, the developing box 100 includes a chip 220 for storing information of the developing box 100, and a chip frame 230 for supporting the chip 220; the chip frame 230 is installed on the left side of the housing 110, and specifically, the chip frame 230 is arranged on the left side of the protective cover 112. In this embodiment, a limiting bracket 113 is arranged on the left side of the protective cover 112, and the limiting bracket 113 has a guide groove 113a extending in the up-down direction. At least a part of the chip frame 230 is located in the guide groove 113a, so that the chip frame 230 can move relative to the protective cover 112 in the up-down direction. The chip frame 230 is installed between the protective cover 112 and the limiting bracket 113 to prevent the chip frame 230 from falling off from the developing box 100.

[0046] Optional, such as Figure 7 As shown, in other embodiments, the chip rack 230 is fixedly installed on the left side of the protective cover 112; the chip rack 230 can also extend from the left side of the shell 110 in the left and right directions. Specifically, the chip rack 230 extends from the protective cover 112 in the left and right directions.

[0047] like Figure 8As shown, the chip 220 includes an electrical contact surface 221, and the chip 220 is arranged in a mounting groove at the top of the chip frame 230 in the up-down direction, so that the electrical contact surface 221 is exposed to the top of the chip frame 230 in the up-down direction, and the electrical contact surface 221 is arranged to face the top of the shell 110 in the up-down direction. After the developer box 100 is installed in the imaging device, the electrical contact surface 221 is connected to the electrical contact member (not shown) in the imaging device, so that the chip 220 establishes a communication link with the imaging device, and the electrical contact surface 221 is composed of a plurality of contact terminals 221a arranged in the left-right direction; preferably, in In this embodiment, four contact terminals 221a are provided, and the distance P of the contact terminals 221a in the front-to-back direction is greater than the distance Q of the contact terminals 221a in the left-to-right direction. The contact area of ​​the contact terminal 221a with the electrical contact component of the imaging device in the front-to-back direction is greater than the contact area of ​​the contact terminal 221a with the electrical contact component in the left-to-right direction. In addition, the developing box 100 is installed toward the interior of the imaging device along the front-to-back direction of the developing box 100 from back to front. Such a design makes it easier for the electrical contact surface 221 to contact with the electrical contact component, thereby improving the stability of the electrical connection between the electrical contact surface 221 and the electrical contact component.

[0048] Further, in the left-right direction, the limiting protrusion 210 and the electrical contact surface 221 are arranged at intervals; in the front-to-back direction, the limiting protrusion 210 and the electrical contact surface 221 are arranged opposite to each other on both sides of the coupling gear 150, the limiting protrusion 210 is located at the front side of the developing roller 120, and the electrical contact surface 221 is located between the handle 111a and the coupling gear 150. In the front-to-back direction, the developing roller 120 is closer to the limiting protrusion 210 than the electrical contact surface 221; in the front-to-back direction, there is a first distance between the developing rollers 120 and there is a second distance between the developing rollers 120 and the electrical contact surface 221, wherein the first distance is smaller than the second distance.

[0049] like Figure 9-10 As shown, the limiting protrusion 210 of the developer box 100 can cooperate with the opening portion 53 of the drum box 50; the width M of the limiting portion 212 of the limiting protrusion 210 in the left-right direction (the distance between the two contact surfaces 210a and 210b) is equal to or at least approximately equal to the width N of the opening portion 53 in the left-right direction (the distance between the two side surfaces 53a and 53b); specifically, the width M of the limiting portion 212 in the left-right direction is slightly smaller than the width N of the opening portion 53 in the left-right direction; an implementation direction that can also be realized is that the width M of the limiting portion 212 in the left-right direction is slightly larger than the width N of the opening portion 53 in the left-right direction, so that the limiting portion 212 and the opening portion 53 are interference fit in the left-right direction.

[0050] When the developer box 100 is installed to the drum box 50, at least a portion of the limiting protrusion 210 is inserted into the interior of the opening portion 53, and the two contact surfaces 210a and 210b of the limiting protrusion 210 are respectively in contact with the two side surfaces 53a and 53b of the opening portion 53, thereby limiting the movement of the limiting protrusion 210 relative to the opening portion 53 in the left-right direction, that is, when the developer box 100 is installed to the drum box 50, the limiting protrusion 210 limits the movement of the developer box 100 relative to the drum box 50 in the left-right direction, that is, the limiting protrusion 210 has the function of limiting the movement of the developer box 100 relative to the drum box 50 in the left-right direction, thereby preventing the developer box 100 and the drum box 50 from moving relative to each other to a large extent during the imaging operation, thereby ensuring the accuracy of the positioning of the developer box 100 and the drum box 50. Furthermore, the limiting protrusion 210 is arranged in sequence with the above-mentioned four electrical contact surfaces 221 in the left-right direction; when the limiting protrusion 210 is limited by the opening portion 53, the movement of the electrical contact surface 221 relative to the drum box 50 is restricted, thereby ensuring the accuracy of the positioning of the electrical contact surface 221, thereby ensuring the stability of the connection between the electrical contact surface 221 and the imaging device.

[0051] like Fig.10 , a partial schematic diagram of a process cartridge 10 composed of a developer cartridge 100 and a drum cartridge 50 is shown. At this time, the limiting protrusion 210 of the developer cartridge 100 is located in the opening 53 of the drum cartridge 50, thereby limiting the movement of the developer cartridge 100 in the left and right directions. When the process cartridge 10 is installed in the imaging device, the entire process cartridge 10 is guided in the interior of the imaging device by the photosensitive drum shaft 52a of the photosensitive drum 52 and positioned in the interior of the imaging device. The limiting effect of the limiting protrusion 210 by the opening 53 ensures that the electrical contact surface 221 is stably positioned on the process cartridge 10; when the process cartridge 10 is installed in the imaging device, the electrical contact surface 221 can establish a stable connection with the imaging device.

[0052] Deformed embodiment:

[0053] 1. The limiting protrusion 210 may also be configured to extend from the bottom of the powder bin 111 in the front-to-back direction.

[0054] 2. The developing box 100 further includes a bearing plate located on the left side of the shell 110, and the bearing plate is used to support the developing roller 120 and the powder feeding roller 130. The limiting protrusion 210 can also be configured to extend from the bottom of the bearing plate in the front-to-back direction.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A developing box, detachably mounted in a drum box having an opening, the developing box comprising: A housing for containing a developer, the housing having a first side and a second side separately arranged in a first direction, and the housing having a third side and a fourth side separately arranged in a second direction intersecting the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, the developing roller being closer to the third side of the housing relative to the fourth side of the housing in the second direction; a chip having an electrical contact surface, the electrical contact surface being located on the first side of the housing in the first direction; The feature is that it also includes: a limiting protrusion, close to the first side of the housing in the first direction, and located at the third side of the housing in the second direction; When the developing cartridge is mounted on the drum cartridge, the limiting protrusion cooperates with the opening to limit the movement of the developing cartridge relative to the drum cartridge in the first direction; In the second direction, the electrical contact surface is closer to the fourth side of the housing than to the third side of the housing.

2. The developing cartridge according to claim 1, characterized in that: In the first direction, the electrical contact surface is farther away from the second side of the housing than the limiting protrusion.

3. The developing cartridge according to claim 1, characterized in that: It also includes a protective cover, which is located on the first side of the housing in the first direction, and the limiting protrusion is extended from the bottom of the protective cover in the second direction.

4. The developing cartridge according to claim 3, characterized in that: A chip frame is also included. The chip frame is used to support the chip. The chip frame is extended from the outer side of the protective cover in the first direction.

5. The developing cartridge according to claim 4, characterized in that: In a third direction intersecting the first direction and the second direction, the electrical contact surface is exposed on the top of the chip frame.

6. The developing cartridge according to claim 1, characterized in that: The third direction intersects with the first direction and the second direction. When the developing box is positioned as follows: in the third direction, the limiting protrusion is located below the shell, and the limiting protrusion is located below the rotation axis of the developing roller, and in the third direction, the electrical contact surface is arranged to face above the shell.

7. The developing cartridge according to claim 1, characterized in that: The developing roller is closer to the limiting protrusion than the electrical contact surface in the second direction; In the second direction, there is a first distance between the developing rollers and a second distance between the developing rollers and the electrical contact surface, wherein the first distance is smaller than the second distance.

8. The developing cartridge according to claim 1, wherein: It also includes a bearing plate for rotatably supporting the developing roller, the bearing plate is located on the first side of the housing in the first direction, and the limiting protrusion is extended from the bottom of the bearing plate in the second direction.

9. The developing cartridge according to claim 1, wherein: When the developing cartridge is mounted to the drum cartridge, the limiting protrusion is at least partially located inside the opening, thereby limiting movement of the developing cartridge relative to the drum cartridge in the first direction.

10. The developing cartridge according to claim 1, wherein: Also includes a coupling gear, the coupling gear can receive the driving force outside the developing box and drive the developing roller to rotate; In the second direction, the coupling gear is located between the limiting protrusion and the electrical contact surface.

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