Quick-release magnetic roller device and printer

Abstract

The utility model relates to printing equipment technical field discloses a quick detachable magnetic roller device, include: magnetic roller, both ends of magnetic roller are axle end, selenium drum shell, one end of selenium drum shell is provided with through -hole, and the axle end of magnetic roller one side passes through the through -hole, first bearing, the inner ring of first bearing is matched with the axle end of magnetic roller one side, and the inboard of the outer ring of first bearing is matched with the through -hole, and the outer ring outboard of first bearing is located selenium drum shell's outside, quick detachable structure includes two half circular rings, two half circular rings are located selenium drum shell's outside, and two half circular rings are fixed in the outer ring outboard of first bearing through the tension assembly, and the half circular ring is provided with the bayonet on, the utility model discloses still discloses a printer, including preceding quick detachable magnetic roller device. The present application has improved the dismounting convenience of magnetic roller, and the dismounting and overhaul of magnetic roller are convenient.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a quick-release magnetic roller device and printer. Background Technology

[0002] The magnetic roller is a core component of a laser printer. It is mainly used to adsorb and transfer toner onto the surface of the photosensitive drum. The magnetic and electric fields are used to achieve uniform charging and adsorption of the toner.

[0003] The magnetic roller is generally installed inside the toner cartridge housing. The two ends of the toner cartridge housing have through holes and a semi-circular opening at the top. The two ends of the magnetic roller are shaft ends. The installation process of the magnetic roller is as follows: 1) Insert the shaft end of one side of the magnetic roller into the through hole, install a bearing at the other end of the magnetic roller, place the bearing in the semi-circular opening, fix the sealing plate to the toner cartridge housing, and limit the bearing; 2) Insert another bearing into the through hole from the outside of the toner cartridge housing near the through hole. The inner ring of the bearing contacts the shaft end of the magnetic roller, and the outer ring contacts the hole wall of the through hole.

[0004] However, after a period of use, the magnetic roller may experience wear and toner buildup. When the magnetic roller needs to be repaired or replaced, the operator must use tools such as pliers and pry bars to forcibly pull out the bearing installed in the through hole of the drum housing. This forced disassembly method is not only cumbersome, but also easily leads to damage and deformation of the bearing, affecting the subsequent assembly accuracy and performance. Summary of the Invention

[0005] The purpose of this utility model is to provide a quick-release magnetic roller device, which adds a quick-release structure so that the bearing between the magnetic roller and the toner cartridge shell can be quickly disassembled, making the operation simple and saving time and effort.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-release magnetic roller device includes: a magnetic roller with shaft ends at both ends; a drum shell with a through hole at one end, through which the shaft end of the magnetic roller passes; a first bearing with its inner ring engaging with the shaft end of the magnetic roller, its outer ring engaging with the through hole, and its outer side located outside the drum shell; and a quick-release structure including two semi-circular rings located outside the drum shell, the two semi-circular rings being fixed to the outer side of the outer ring of the first bearing by a tensioning assembly, and the semi-circular rings having a locking slot.

[0008] In the above technical solution, by placing the outer side of the outer ring of the first bearing relative to the outer side of the toner cartridge shell and adding a quick-release structure, the first bearing can be easily disassembled and installed.

[0009] During installation, the shaft end of the magnetic roller is passed through the through hole, and the inner ring of the first bearing is fitted with the shaft end. The two semi-circular rings of the quick-release structure are fixed to the outer side of the outer ring of the first bearing by the clamping assembly. Then, push the semi-circular rings or the first bearing to move the first bearing relative to the shaft end, so that the inner side of the outer ring of the first bearing enters the through hole. At this time, the semi-circular ring is in contact with the outer wall of the toner cartridge shell, and the first bearing is installed in place. During disassembly, use pliers, pry bars, or other tools to insert into the clamping slots of the semi-circular rings and apply force away from the toner cartridge shell. The tools will move the semi-circular rings outward, thereby disengaging the first bearing from the through hole, completing the disassembly of the first bearing. After that, the magnetic roller can be easily disassembled, significantly improving the convenience of magnetic roller disassembly, inspection, and replacement.

[0010] Specifically, during installation, the two semicircular rings are brought close to each other from both sides of the first bearing, with the opposite ends of the two semicircular rings touching. At this time, the inner surface of the semicircular rings is pressed against the first bearing. The tensioning assembly allows the two semicircular rings to form a complete ring, preventing the semicircular rings from detaching from the first bearing.

[0011] Preferably, the outer ring of the first bearing is provided with a groove, and the inner ring surface of the semi-circular ring is provided with a locking block that engages with the groove.

[0012] Preferably, the slot is an annular groove, and the block is an arc-shaped block that mates with the annular groove.

[0013] Preferably, the two semicircular rings have an inner edge protruding inward on the side away from the first bearing, and the diameter of the circle containing the inner edge is larger than the diameter of the shaft end of the magnetic roller.

[0014] Preferably, the ends of the semicircular rings that are close to each other are provided with a bayonet, and the two bayonets form a tool insertion port.

[0015] Preferably, the tensioning assembly includes two tensioning bolts, with through holes provided at the opposite ends of the two semicircular rings, through which the tensioning bolts pass and are connected to the tensioning nut.

[0016] Preferably, a guide rod is fixed on the outside of the drum shell, and a guide seat is provided on the outside of the semi-circular ring corresponding to the position of the guide rod. The guide seat is provided with a guide hole that slides through and cooperates with the guide rod.

[0017] Preferably, a second bearing is installed on the shaft end on the other side of the magnetic roller, and a semi-circular groove for supporting the second bearing is opened at the end of the drum shell away from the through hole. The opening of the semi-circular groove is set upward, and a limiting component for limiting the second bearing is installed on the drum shell.

[0018] Preferably, the limiting assembly includes a limiting plate with a downwardly protruding limiting block. The lower end of the limiting block is a limiting arc surface that fits against the second bearing. Mounting holes are provided at both ends of the limiting plate. A threaded hole is provided on the drum shell opposite the mounting hole, and a limiting bolt passes through the mounting hole and connects to the threaded hole. Another objective of this invention is to provide a printer equipped with the aforementioned quick-release magnetic roller device, facilitating the inspection and replacement of the magnetic roller in the printer and improving efficiency.

[0019] To achieve another objective of this application, the following technical solution is adopted:

[0020] A printer including the aforementioned quick-release magnetic roller device.

[0021] The beneficial effects of this utility model are:

[0022] 1) Significantly improved the ease of disassembly of the magnetic roller, making it convenient for disassembly and maintenance;

[0023] 2) To better avoid damage to the first bearing caused by forced disassembly, and to extend the service life of the first bearing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the quick-release magnetic roller device.

[0025] Figure 2 for Figure 1 A schematic diagram of the split structure.

[0026] Figure 3 This is a schematic diagram of the disassembly structure of the quick-release mechanism.

[0027] Figure 4 for Figure 3 A schematic diagram of the structure of the middle semi-circular ring. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Example 1:

[0030] like Figures 1 to 4 As shown, the present invention provides a quick-release magnetic roller device, comprising: a magnetic roller 1, with both ends of the magnetic roller 1 being shaft ends 2; a drum shell 3, with a through hole 4 at one end of the drum shell 3, through which the shaft end of the magnetic roller 1 passes; a first bearing 5, the inner ring of the first bearing 5 engaging with the shaft end of the magnetic roller 1, the inner side of the outer ring of the first bearing 5 engaging with the through hole, and the outer side of the outer ring of the first bearing 5 located outside the drum shell 3; and a quick-release structure comprising two semicircular rings 6, the two semicircular rings 6 located outside the drum shell 3, the two semicircular rings 6 being fixed outside the outer ring of the first bearing 5 by a tensioning assembly, and the semicircular rings 6 having a locking slot 7.

[0031] In the above technical solution, by placing the outer side of the outer ring of the first bearing 5 relative to the outer side of the toner cartridge shell 3 and adding a quick-release structure, the first bearing 5 can be easily disassembled and installed.

[0032] During installation, the shaft end 2 on one side of the magnetic roller 1 is passed through the through hole 4, and the inner ring of the first bearing 5 is fitted with the shaft end 2. The two semicircular rings 6 of the quick-release structure are fixed to the outer side of the outer ring of the first bearing 5 by the clamping assembly. Then, push the semicircular rings 6 or the first bearing 5 to move the first bearing 5 relative to the shaft end 2, so that the inner side of the outer ring of the first bearing 5 enters the through hole 4. At this time, the semicircular rings 6 are in contact with the outer wall of the toner cartridge shell 3, and the first bearing 5 is installed in place. During disassembly, use pliers, pry bars, or other tools to insert into the clamping slots 7 of the semicircular rings 6, apply force away from the toner cartridge shell 3, and use the tools to move the semicircular rings 6 outward, so that the first bearing 5 is disengaged from the through hole 4, completing the disassembly of the first bearing 5. After that, the magnetic roller 1 can be easily disassembled, which significantly improves the convenience of disassembling, inspecting, and replacing the magnetic roller 1.

[0033] Specifically, during installation, the two semicircular rings 6 are brought close to each other from both sides of the first bearing 5, with the opposite ends of the two semicircular rings 6 touching. At this time, the inner surface of the semicircular rings 6 is pressed against the first bearing 5. The tensioning assembly can make the two semicircular rings 6 form a complete ring, preventing the semicircular rings 6 from separating from the first bearing 5.

[0034] The drum shell 3 is the outer shell of the drum assembly of the laser printer. It is an existing structure, and the magnetic roller 1 rotates with the drum shell 3.

[0035] In practice, a groove 8 is provided on the outer side of the outer ring of the first bearing 5, and a locking block 9 protrudes from the inner ring surface of the semi-circular ring 6 to engage with the groove 8. The cooperation between the groove 8 and the locking block 9 increases the connection between the first bearing 5 and the semi-circular ring 6. When disassembling the first bearing 5, the semi-circular ring 6 is pulled outward. The groove 8 and the locking block 9 prevent the semi-circular ring 6 from slipping relative to the first bearing 5, thus improving the reliability of disassembly.

[0036] In practice, the slot 8 is an annular groove, and the locking block 9 is an arc-shaped block that mates with the annular groove. The arc-shaped block is a semi-circular arc, which, when mates with the annular groove, increases the contact area and prevents excessive localized force during disassembly of the first bearing 5, thus avoiding damage to the outer ring of the first bearing 5 and extending its service life.

[0037] In practice, the two semicircular rings 6 have an inner edge 10 protruding inward from the side away from the first bearing 5. The diameter of the circle containing the inner edge 10 is larger than the diameter of the shaft end 2 of the magnetic roller 1. When the inner edge 10 is in contact with the side of the first bearing 5, the locking block 9 engages with the locking groove 8 to provide a limiting function. At the same time, the diameter of the circle containing the inner edge 10 is larger than the diameter of the shaft end 2 of the magnetic roller 1, which can avoid interference with the magnetic roller 1 and ensure that the magnetic roller 1 can work normally.

[0038] In practice, the two ends of the semicircular rings 6, which are close to each other, are provided with slots 7, which together form a tool insertion port. The two slots 7 forming the insertion port facilitates connection with tools and improves the ease of operation.

[0039] In implementation, the tensioning assembly includes two tensioning bolts 11, and through holes 12 are provided at the opposite ends of the two semicircular rings 6. The tensioning bolts 11 pass through the through holes and are connected to the tensioning nuts 13. The tensioning bolts 11 passing through the through holes 12 and connecting to the tensioning nuts 13 achieve a stable connection between the two semicircular rings 6, which is simple to operate.

[0040] Of course, in practice, the tensioning components can be connected by hooks and buckles; or by using a pull rope to tighten them.

[0041] In practice, a guide rod 14 is fixed to the outside of the drum shell 3, and a guide seat 15 protrudes from the outside of the semi-circular ring 6 corresponding to the position of the guide rod 14. The guide seat 15 has a guide hole 16 that slides through and engages with the guide rod 14. The guide rod 14 guides the movement of the semi-circular ring 6, facilitating the installation and removal of the first bearing 5.

[0042] In implementation, a second bearing 17 is installed on the shaft end 2 on the other side of the magnetic roller 1. A semi-circular groove 18 supporting the second bearing 17 is opened at the end of the drum shell 3 away from the through hole 4. The opening of the semi-circular groove 18 is set upward. A limiting component for limiting the second bearing 17 is installed on the drum shell 3. After the shaft end of one side of the magnetic roller 1 is installed with the through hole 4, the second bearing 17 is installed on the shaft end 2 on the other side of the magnetic roller 1 and placed in the semi-circular groove 18. The semi-circular groove 18 supports the second bearing 17. The first bearing 5 and the second bearing 17 are coaxially arranged. The limiting component limits the second bearing 17 to prevent the second bearing 17 from bouncing or shaking.

[0043] In implementation, the limiting assembly includes a limiting plate 19, which has a downwardly protruding limiting block 20. The lower end of the limiting block 20 is a limiting arc surface 21 that fits against the second bearing 17. Mounting holes 22 are provided through both ends of the limiting plate 19. A threaded hole 23 is provided on the drum shell 3 opposite the mounting hole 22. A limiting bolt passes through the mounting hole 22 and connects to the threaded hole 23. The limiting plate 19 is placed on the drum shell 3, and the limiting arc surface 21 abuts against the outer ring of the second bearing 17. The limiting bolt passes through the mounting hole 22 and connects to the threaded hole to fix the limiting plate to the drum shell 3.

[0044] Of course, in actual implementation, one end of the limiting plate of the limiting component can be rotatably connected to the drum shell, for example, through a rotating shaft. After the limiting plate is rotated, its other end is connected to the drum shell through a buckle.

[0045] Example 2:

[0046] A printer includes the aforementioned quick-release magnetic roller device. Printers employing this quick-release magnetic roller device facilitate the inspection and replacement of the magnetic roller 1, quickly completing disassembly operations, reducing printer maintenance time and costs, and minimizing additional expenses caused by component damage during maintenance.

[0047] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release magnetic roller device, characterized in that, include: Magnetic roller (1), the two ends of magnetic roller (1) are shaft ends (2); A toner cartridge shell (3) has a through hole (4) at one end, and the shaft end (2) of the magnetic roller (1) passes through the through hole (4). The first bearing (5) has an inner ring that mates with the shaft end (2) on one side of the magnetic roller (1), and the inner side of the outer ring of the first bearing (5) mates with the through hole (4). The outer side of the outer ring of the first bearing (5) is located on the outer side of the drum shell (3). The quick-release structure includes two semicircular rings (6), which are located on the outside of the drum shell (3). The two semicircular rings (6) are fixed to the outside of the outer ring of the first bearing (5) by a tensioning assembly. A latch (7) is provided on the semicircular rings (6).

2. The quick-release magnetic roller device according to claim 1, characterized in that, The outer ring of the first bearing (5) is provided with a groove (8), and the inner ring surface of the semi-circular ring (6) is provided with a locking block (9) that engages with the groove (8).

3. The quick-release magnetic roller device according to claim 2, characterized in that, The slot (8) is an annular groove, and the block (9) is an arc-shaped block that mates with the annular groove.

4. The quick-release magnetic roller device according to any one of claims 1 to 3, characterized in that, The two semicircular rings (6) have an inner edge (10) protruding inward on the side away from the first bearing (5), and the diameter of the circle containing the inner edge (10) is larger than the diameter of the shaft end of the magnetic roller (1).

5. The quick-release magnetic roller device according to any one of claims 1 to 3, characterized in that, The two ends of the semicircular rings (6) are provided with slots (7) facing each other, and the two slots (7) form a tool insertion port.

6. The quick-release magnetic roller device according to any one of claims 1 to 3, characterized in that, The tensioning assembly includes two tensioning bolts (11), and two semicircular rings (6) with through holes (12) at their opposite ends. The tensioning bolts (11) pass through the through holes (12) and are connected to the tensioning nuts (13).

7. The quick-release magnetic roller device according to any one of claims 1 to 3, characterized in that, A guide rod (14) is fixed on the outside of the drum shell (3). A guide seat (15) is provided on the outside of the semi-circular ring (6) corresponding to the position of the guide rod (14). The guide seat (15) is provided with a guide hole (16) that slides with the guide rod (14).

8. The quick-release magnetic roller device according to any one of claims 1 to 3, characterized in that, A second bearing (17) is installed on the shaft end on the other side of the magnetic roller (1). A semi-circular groove (18) supporting the second bearing (17) is opened at the end of the drum shell (3) away from the through hole (4). The opening of the semi-circular groove (18) is set upward. A limiting component for limiting the second bearing (17) is installed on the drum shell (3).

9. The quick-release magnetic roller device according to claim 8, characterized in that, The limiting assembly includes a limiting plate (19), which has a downwardly protruding limiting block (20). The lower end of the limiting block (20) is a limiting arc surface (21) that fits against the second bearing (17). Mounting holes (22) are provided through both ends of the limiting plate (19). The drum shell (3) has a threaded hole (23) facing the mounting hole (22). The limiting bolt passes through the mounting hole (22) and is connected to the threaded hole (23).

10. A printer, characterized in that, The quick-release magnetic roller device includes any one of claims 1 to 9.

Images