Conductive structure of magnetic roller

Abstract

The utility model discloses a magnetic roller conductive structure, which comprises a roller body and a side cover, a magnetic core is arranged in the roller body, a positioning column is arranged on the side cover, the positioning column is inserted into the roller body, a conductive sheet is fixedly arranged on the side cover, an extension sheet is arranged on the conductive sheet, and the extension sheet is inserted into the roller body. And the extension sheet extends into the roller body and is attached to the inner wall of the roller body for electric conduction. According to the utility model, the extension sheet integrated on the conducting strip is used for conducting, compared with the conducting of the existing conducting wire, the conducting strip has the advantages of simple installation and good conducting stability, the assembly difficulty can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a magnetic roller conductive structure. Background Art

[0002] Prior art, such as Chinese utility model patent document, with announcement number CN209388120U, discloses a magnetic roller, including a magnetic roller body, the magnetic roller including an aluminum tube and a magnetic core arranged in the aluminum tube and penetrating the inside of the aluminum tube, and an end cap movably connected to the conductive end of the aluminum tube. The magnetic core includes an iron shaft and a magnetic sheet sleeved on the outside of the iron shaft, a transmission head is sleeved on the other end of the aluminum tube, and meshing surfaces matching the gears inside the toner cartridge are provided on both sides of the transmission head, and a conductive wire in contact with the conductive end of the iron shaft is provided in the end cap, and the tail end of the conductive wire is wound around the end cap and in contact with the aluminum tube.

[0003] Based on the above, in the prior art, the magnetic roller conducts electricity through a conductive wire installed at one end of the aluminum tube, and the other end of the conductive wire needs to be connected to the conductive sheet of the end cover for connection and conduction. The problem with this conductive structure is that conductive wire is required for conduction. When the conductive wire is actually assembled, it is difficult to assemble, which affects the assembly efficiency and is not conducive to improving production efficiency. Further improvement is needed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a magnetic roller conductive structure.

[0005] A magnetic roller conductive structure designed for this purpose includes a roller body and a side cover, wherein a magnetic core is arranged in the roller body, a positioning column is arranged on the side cover, the positioning column is inserted into the roller body, a conductive sheet is fixedly arranged on the side cover, an extension sheet is arranged on the conductive sheet, the extension sheet extends into the roller body and is in contact with the inner wall of the roller body for electrical conduction.

[0006] Preferably, a groove is provided on the outer wall of the positioning column, and the extension piece is embedded in the groove.

[0007] Preferably, positioning sleeves are provided at both ends of the roller body, the positioning sleeves are inserted into the roller body, and the positioning posts are inserted into the positioning sleeves.

[0008] Preferably, the extension sheet consists of an extension portion and an elastic bonding portion, and the elastic bonding portion is bonded to the inner wall of the roller body for electrical conduction.

[0009] Preferably, the positioning sleeve comprises an annular positioning portion and an annular plug-in portion, the annular plug-in portion is plugged into the roller body and fits against the inner wall of the roller body, and the annular positioning portion fits against the end face of the roller body to limit position.

[0010] Preferably, the outer diameter of the outer ring of the annular positioning portion is larger than the outer diameter of the roller body.

[0011] Compared with the prior art, an extension piece is provided on the conductive sheet of the present utility model. The extension piece extends into the roller body and is in conductive contact with the inner wall of the roller body. The present utility model conducts electricity through the extension piece integrated on the conductive sheet. Compared with the existing conductive wire for conducting electricity, the conductive sheet has the advantages of simple installation and good electrical conductivity stability. At the same time, it can also reduce the assembly difficulty and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0013] Figure 2 is a cross-sectional structural schematic diagram of the present utility model;

[0014] Figure 3 is the present utility model Figure 2 is an enlarged structural schematic diagram at A in;

[0015] Figure 4 is an exploded structural schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0017] Referring to Figures 1 - 4 , a magnetic roller conductive structure includes a roller body 10 and an end cover 20. A magnetic core is arranged inside the roller body 10. A positioning post 210 is arranged on the end cover 20. The positioning post 210 is inserted into the roller body 10. A conductive sheet 40 is fixedly arranged on the end cover 20. An extension piece 410 is arranged on the conductive sheet 40. The extension piece 410 extends into the roller body 10 and is in conductive contact with the inner wall of the roller body 10. The present utility model conducts electricity through the extension piece integrated on the conductive sheet. Compared with the existing conductive wire for conducting electricity, the conductive sheet has the advantages of simple installation and good electrical conductivity stability. At the same time, it can also reduce the assembly difficulty and improve the production efficiency.

[0018] Referring to Figure 3 and Figure 4 , a groove 211 is arranged on the outer wall of the positioning post 210. The extension piece 410 is embedded in the groove 211.

[0019] Referring to Figure 3 , positioning sleeves 30 are arranged at both ends of the roller body 10. The positioning sleeves 30 are inserted into the roller body 10. The positioning post 210 is inserted into the positioning sleeve 30.

[0020] During assembly, the conductive sheet 40 is inserted and assembled with the positioning post 210, which enables the extension piece 410 to be embedded into the groove 211. Then, the positioning sleeve 30 is inserted and assembled with the roller body 10, and then the side cover 20 is inserted and assembled with the roller body 10, so that the positioning post 210 is inserted into the positioning sleeve 30. During this insertion process, the extension piece 410 passes through the positioning sleeve 30 and extends into the roller body 10 and is in conductive contact with the inner wall of the roller body 10.

[0021] See Figure 3 and Figure 4 , the extension piece 410 is composed of an extension part 411 and an elastic fitting part 412, and the elastic fitting part 412 is in conductive contact with the inner wall of the roller body 10.

[0022] See Figure 3 , the positioning sleeve 30 includes an annular positioning part 310 and an annular insertion part 320. The annular insertion part 320 is inserted into the roller body 10 and is in contact with the inner wall of the roller body 10, and the annular positioning part 310 is in contact with and limits the end face of the roller body 10.

[0023] Furthermore, the outer diameter of the annular positioning part 310 is larger than the outer diameter of the roller body 10. This setting is to achieve that when the toner cartridge is applied, the annular positioning part 310 is in contact with the drum core, so that there is a gap between the roller body 10 and the drum core. By using the annular positioning part 310 to replace the existing need to add protective sleeves at both ends of the shaft head of the roller body 10 for isolation, the use of protective sleeves can be reduced, the structure can be optimized, the production cost can be reduced and the production efficiency can be improved. At the same time, problems such as abnormal noise and powder leakage caused by the deformation of the protective sleeve are solved.

[0024] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0026] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic roller conductive structure, comprising a roller body (10) and an end cap (20), a magnetic core is arranged inside the roller body (10), a positioning post (210) is arranged on the end cap (20), the positioning post (210) is inserted into the roller body (10), and a conductive sheet (40) is fixedly arranged on the end cap (20), characterized in that: An extension piece (410) is provided on the conductive sheet (40), and the extension piece (410) extends into the roller body (10) and is in conductive contact with the inner wall of the roller body (10); A groove (211) is provided on the outer wall of the positioning post (210), and the extension piece (410) is embedded in the groove (211); Positioning sleeves (30) are provided at both ends of the roller body (10), the positioning sleeves (30) are inserted into the roller body (10), and the positioning posts (210) are inserted into the positioning sleeves (30); The extension piece (410) is composed of an extension part (411) and an elastic fitting part (412), and the elastic fitting part (412) is in conductive contact with the inner wall of the roller body (10); The positioning sleeve (30) includes an annular positioning part (310) and an annular insertion part (320), the annular insertion part (320) is inserted into the roller body (10) and is in contact with the inner wall of the roller body (10), and the annular positioning part (310) is in contact with and limits the end face of the roller body (10).

2. The magnetic roller conductive structure according to claim 1, wherein: The outer diameter of the outer ring of the annular positioning part (310) is larger than the outer diameter of the roller body (10).

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