CN212229426U - Magnetic roller - Google Patents
Magnetic roller Download PDFInfo
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- CN212229426U CN212229426U CN202021242214.7U CN202021242214U CN212229426U CN 212229426 U CN212229426 U CN 212229426U CN 202021242214 U CN202021242214 U CN 202021242214U CN 212229426 U CN212229426 U CN 212229426U
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- magnetic roller
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Abstract
A magnetic roller comprises a magnetic roller tube body and a transmission head, wherein a magnetic core is arranged in the magnetic roller tube body, the outer diameter of the magnetic roller tube body is 11-12 mm, the outer diameter of the magnetic core is 9-10 mm, and the outer diameter of a connecting shaft of the magnetic core is 5-6 mm; the transmission head comprises two opposite end parts, namely a driving head and a connecting head, the connecting head is embedded in one end of the magnetic roller body and is connected with the connecting shaft of the magnetic core, and the driving head is in driving connection with the driving gear. The magnetic roller solves the technical problems that the material cost of the selenium drum magnetic roller is high and the joint is easy to break in the prior art, and is low in production cost, high in strength and long in service life.
Description
Technical Field
The utility model relates to a printing consumables technical field especially relates to a magnetic roller.
Background
The magnetic roller in the toner cartridge is an important accessory of a laser printer, the main body of the magnetic roller is usually composed of an internal magnetic core and conductive rubber sleeved outside the magnetic core, carbon powder is adsorbed on the surface of the conductive rubber under the action of a magnetic field of the magnetic core, and after the toner cartridge is electrified, the carbon powder on the surface of the conductive rubber is arranged and transferred onto the photosensitive drum. The magnetic roller of the selenium drum is one of the parts which have the greatest influence on image density, one end of the magnetic roller of the selenium drum is connected with a transmission connector, the transmission connector is in driving connection with a driving gear, the outer diameter of the existing magnetic roller of the selenium drum is larger than that of the transmission connector, so that the outer diameter of the connection part of the magnetic roller and the transmission connector is smaller than that of the magnetic roller of the selenium drum, the connection part is easy to break, and in addition, the outer diameter of the magnetic roller of the selenium drum is larger, so that the material cost is increased.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a magnetic roller has solved among the prior art material cost height and the easy cracked technical problem of junction of selenium drum magnetic roller, and this magnetic roller's low in production cost, intensity is high, long service life.
In order to achieve the above object, the present invention provides the following technical solutions:
a magnetic roller comprises a magnetic roller tube body and a transmission head, wherein a magnetic core is arranged in the magnetic roller tube body, the outer diameter of the magnetic roller tube body is 11-12 mm, the outer diameter of the magnetic core is 9-10 mm, and the outer diameter of a connecting shaft of the magnetic core is set to be 5-6 mm; the transmission head comprises two opposite end parts, namely a driving head and a connector, the connector is embedded in one end of the magnetic roller body and connected with a connecting shaft of the magnetic core, and the driving head is in driving connection with the driving gear.
Further, the driving head is provided with a first driving section and a second driving section, the outer diameter of the second driving section is smaller than that of the first driving section, and the second driving section is in driving connection with the driving gear.
Further, the outer diameter of the first driving section is 7 mm-8 mm, the outer diameter of the second driving section is 5 mm-6 mm, and the second driving section is provided with a notch.
Furthermore, the transmission head is provided with a through hole which penetrates along the axial direction of the transmission head.
Further, at least one part of the peripheral surface of the magnetic roller tube body is covered with a conductive coating, and the thickness of the conductive coating is 0.02 mm-0.06 mm.
Further, the roughness of the conductive coating is Ra1.0-2.0.
The utility model has the advantages that:
the utility model provides a magnetic roller, it includes magnetic roller body and drive head, wherein, install the magnetic core in the magnetic roller body, the external diameter of pipe of magnetic roller body is 11mm ~ 12mm, the external diameter of magnetic core is 9mm ~ 10mm, the external diameter of the connecting axle of magnetic core sets up to 5mm ~ 6 mm; the transmission head comprises two opposite end parts, namely a driving head and a connecting head, the connecting head is embedded in one end of the magnetic roller body and is connected with the connecting shaft of the magnetic core, and the driving head is in driving connection with the driving gear.
The magnetic roller provided by the utility model has the advantages that the difference between the outer diameter of the magnetic core connecting shaft and the outer diameter of the magnetic core is smaller, the strength of the magnetic roller is ensured, and the magnetic roller connecting shaft is prevented from being easily broken when the driving gear is in driving connection with the transmission head; in addition, in the structural arrangement of the magnetic roller, the proper outer diameter of the magnetic roller tube body, the magnetic core and the magnetic core connecting shaft is arranged, so that the material cost is reduced, the weight of the magnetic roller is also reduced, and the magnetic roller is convenient to mount; the magnetic roller solves the technical problems that the material cost of the selenium drum magnetic roller is high and the joint is easy to break in the prior art, and is low in production cost, high in strength and long in service life.
Drawings
FIG. 1 is a schematic structural view of a magnetic roller according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a magnetic roller according to an embodiment of the present invention;
fig. 3 is a schematic end view of a magnetic roller according to an embodiment of the present invention.
In the figure, 10-magnetic roller tube, 20-transmission head, 21-connection head, 221-first driving section, 221-1-notch section, 222-second driving section, 23-through hole, 30-magnetic core, 31-magnetic roller connecting shaft, 40-conductive coating
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a magnetic roller in an embodiment of the present invention, fig. 2 is a schematic sectional diagram of a magnetic roller in an embodiment of the present invention, and fig. 3 is a schematic end view of a magnetic roller in an embodiment of the present invention.
The embodiment provides a magnetic roller for developing box's magnetic roller belongs to printing consumables technical field.
In this embodiment, referring to fig. 1 and 2, the magnetic roller comprises a magnetic roller tube 10 and a transmission head 20, wherein a magnetic core 30 is installed in the magnetic roller tube 10, the outer diameter of the magnetic roller tube 10 is 11mm to 12mm, the outer diameter of the magnetic core 30 is 9mm to 10mm, and the outer diameter of a magnetic core connecting shaft 31 is set to be 5mm to 6 mm; the driving head 20 includes two opposite ends, i.e., a driving head and a connecting head 21, the connecting head 21 is embedded in one end of the magnetic roller tube 10 and connected to the magnetic core connecting shaft 31, and the driving head is connected to a driving gear (not shown).
With continued reference to fig. 1 and 2, the driving head of the transmission head 20 is provided with a first driving section 221 and a second driving section 222, the outer diameter of the second driving section 222 is smaller than that of the first driving section 221, the second driving section 222 is in driving connection with the driving gear, so that the connection stability of the transmission head 20 and the driving gear is improved, and it is the size difference between the outer diameters of the first driving section 221 and the second driving section 222 that forms a step that avoids the excessive connection between the driving head and the driving gear.
The utility model provides a magnetic roller, the external diameter of magnetic core connecting axle 31 differs less with the external diameter size of magnetic core 30, when guaranteeing the intensity of this magnetic roller, avoid leading to magnetic roller connecting axle 31 to split easily when drive gear is connected with drive head 20 drive, and magnetic roller connecting axle 31 external diameter too big can lead to the material cost high, and with the drive head 20 connection difficult; in addition, in the structural arrangement of the magnetic roller, the proper outer diameter of the magnetic roller tube body 10, the magnetic core 30 and the magnetic core connecting shaft 31 is set, so that the material cost is reduced, the weight of the magnetic roller is also reduced, and the magnetic roller is convenient to mount; the magnetic roller solves the technical problems that the material cost of the selenium drum magnetic roller is high and the joint is easy to break in the prior art, and is low in production cost, high in strength and long in service life.
In the embodiment, referring to fig. 2 and 3 specifically, the outer diameter of the first driving section 221 is 7mm to 8mm, the outer diameter of the second driving section 222 is 5mm to 6mm, and the second driving section 222 is provided with the notch portion 222-1, as shown in the figure, the notch portion 222-1 is provided with two positions, the two notch portions 222-1 are symmetrically arranged, and the notch portion 222-1 is arranged to avoid the defect that the transmission head 20 slips when being driven by the driving gear to rotate.
Further, referring to fig. 2 specifically, the driving head 20 is provided with a through hole 23, the through hole 23 is arranged to penetrate along the axial direction of the driving head 20, and the arrangement of the through hole 23 facilitates the cleaning of the magnet roller tube 10 before coating, so as to ensure the quality of the conductive coating 40 in the later period.
In this embodiment, referring to fig. 1 specifically, the outer circumferential surface of the middle portion of the magnetic roller tube 10 is covered with the conductive coating 40, the thickness of the conductive coating 40 is 0.02mm to 0.06mm, paint is not wasted, and the thickness of the conductive coating 40 can ensure uniform adsorption of carbon powder, thereby ensuring printing effect and printing quality.
In addition, in the embodiment, the roughness of the conductive coating 40 is Ra1.0-2.0, so that the adsorption effect of carbon powder is ensured.
The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, the present invention is described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the technical solutions of the present invention are modified or replaced with equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the claims of the present invention.
Claims (6)
1. A magnetic roll, characterized by: the magnetic roller comprises a magnetic roller tube body and a transmission head, wherein a magnetic core is arranged in the magnetic roller tube body, the outer diameter of the magnetic roller tube body is 11-12 mm, the outer diameter of the magnetic core is 9-10 mm, and the outer diameter of a connecting shaft of the magnetic core is 5-6 mm; the transmission head comprises two opposite end parts, namely a driving head and a connector, the connector is embedded in one end of the magnetic roller body and connected with a connecting shaft of the magnetic core, and the driving head is in driving connection with the driving gear.
2. The magnetic roll of claim 1, wherein: the driving head is provided with a first driving section and a second driving section, the outer diameter of the second driving section is smaller than that of the first driving section, and the second driving section is in driving connection with the driving gear.
3. The magnetic roll of claim 2, wherein: the outer diameter of the first driving section is 7-8 mm, the outer diameter of the second driving section is 5-6 mm, and the second driving section is provided with a notch.
4. A magnetic roller according to any one of claims 1 to 3, characterized in that: the transmission head is provided with a through hole which penetrates along the axial direction of the transmission head.
5. The magnetic roll of claim 4, wherein: at least one part of the peripheral surface of the magnetic roller pipe body is covered with a conductive coating, and the thickness of the conductive coating is 0.02 mm-0.06 mm.
6. The magnetic roll of claim 5, wherein: the roughness of the conductive coating is Ra1.0-2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021242214.7U CN212229426U (en) | 2020-06-30 | 2020-06-30 | Magnetic roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021242214.7U CN212229426U (en) | 2020-06-30 | 2020-06-30 | Magnetic roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212229426U true CN212229426U (en) | 2020-12-25 |
Family
ID=73910584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021242214.7U Active CN212229426U (en) | 2020-06-30 | 2020-06-30 | Magnetic roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212229426U (en) |
-
2020
- 2020-06-30 CN CN202021242214.7U patent/CN212229426U/en active Active
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