Sealing structure for magnetic roller and magnetic roller

Abstract

The utility model discloses a sealing structure for a magnetic roller and the magnetic roller, the sealing structure comprises a sealing end cover, a mounting slotted hole is arranged at the center of the sealing end cover, an accommodating groove is arranged in the sealing end cover at the outer side of the mounting slotted hole, a first sealing ring is arranged in the accommodating groove, and a second sealing ring is arranged in the accommodating groove. A crimping ring groove communicated with the accommodating groove is formed in the inner end of the sealing end cover; and a compression ring is crimped in the crimping ring groove. The sealing structure for the magnetic roller and the magnetic roller aim to overcome the defects in the prior art, and the sealing structure for the magnetic roller is simple in structure and good in sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic rollers, and particularly relates to a sealing structure for a magnetic roller and a magnetic roller. Background Art

[0002] A magnetic roller, also known as a developing magnetic roller, is an important component in office equipment such as laser printers and copiers.

[0003] During the printing or copying process, the magnetic roller is mainly responsible for adsorbing and transporting toner. It uses magnetism to adsorb the toner from the toner cartridge and evenly transports the toner to the photosensitive drum through a specific magnetic field distribution, thereby forming visible images or text.

[0004] Due to design defects in existing magnetic rollers, toner easily enters the interior from the ends of the magnetic roller during use, thus affecting the normal use of the magnetic roller.

[0005] Therefore, existing magnetic rollers need to be further improved. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a sealing structure for a magnetic roller with a simple structure and good sealing effect.

[0007] Another purpose of the utility model is to provide a magnetic roller including the above sealing structure.

[0008] Regarding the sealing structure for a magnetic roller, in order to achieve the above purpose, the utility model adopts the following scheme: A sealing structure for a magnetic roller includes a sealing end cover. An installation groove hole is provided at the center of the sealing end cover. A receiving groove is provided in the sealing end cover outside the installation groove hole. A first sealing ring is provided in the receiving groove. A crimping ring groove communicating with the receiving groove is provided at the inner end of the sealing end cover, and a pressing ring is crimped in the crimping ring groove.

[0009] As another improvement of the sealing structure for a magnetic roller of the utility model, a sealing convex ring is provided in the receiving groove, a sealing ring groove is provided at a position corresponding to the first sealing ring and the sealing convex ring, and the sealing convex ring is inserted into the sealing ring groove.

[0010] As another improvement of the sealing structure for a magnetic roller of the utility model, outer ring grooves are provided at intervals on the outer wall of the sealing end cover.

[0011] As another improvement of the sealing structure for a magnetic roller of the utility model, a second sealing ring is provided in the outer ring groove.

[0012] As another improvement to the sealing structure of the magnetic roller of the present utility model, an annular end is provided at the outer end of the sealing end cover, and the outer diameter of the annular end is greater than the outer diameter of the sealing end cover.

[0013] As another improvement to the sealing structure of the magnetic roller of the present utility model, a connecting convex ring is provided at the center of the outer end face of the sealing end cover.

[0014] For the magnetic roller, in order to achieve the above object, the present utility model adopts the following scheme: A magnetic roller of the present utility model, characterized in that: it includes an outer cylinder, a central shaft is provided inside the outer cylinder, a magnetic sleeve is provided on the outer wall of the central shaft, the magnetic sleeve is arranged inside the outer cylinder, a sealing structure as described in any one of the above is provided at the end of the outer cylinder, and at least one end of the central shaft extends out of the sealing structure.

[0015] As another improvement to the magnetic roller of the present utility model, the magnetic sleeve is a sector-shaped magnetic sleeve, six sector-shaped magnetic sleeves are provided on the central shaft, and the included angle of each sector-shaped magnetic sleeve is °.

[0016] As another improvement to the magnetic roller of the present utility model, external convex reinforcing ribs are densely arranged on the outer wall of the outer cylinder.

[0017] As another improvement to the magnetic roller of the present utility model, a positioning notch is provided at one end of the central shaft, and a through hole of the central axis is provided at the other end of the central shaft.

[0018] In summary, the beneficial effects of the present utility model compared with the prior art are: The structure of the present utility model is simple, a first sealing ring is arranged inside the sealing end cover and fixed by a pressing ring, effectively preventing toner from entering the inside of the outer cylinder through the gap between the central shaft and the sealing end cover during use, thus ensuring the normal use of the magnetic roller. Brief Description of the Drawings

[0019] Figure 1 Is a three-dimensional schematic diagram of the present utility model.

[0020] Figure 2 Is a cross-sectional schematic diagram of the present utility model.

[0021] Figure 3 Is Figure 2 An enlarged schematic diagram of part A in

[0022] Figure 4 Is a three-dimensional schematic diagram of the sealing end cover of the present utility model.

[0023] Figure 5 Is a three-dimensional schematic diagram of the first sealing ring of the present utility model.

[0024] In the figure: 1. Sealing end cover; 2. Mounting slot hole; 3. Accommodating groove; 4. First sealing ring; 5. Crimping ring groove; 6. Compression ring; 7. Sealing convex ring; 8. Sealing ring groove; 9. Outer ring groove; 10. Second sealing ring; 11. Ring-shaped end; 12. Connecting convex ring; 13. Outer cylinder; 14. Central shaft; 15. Magnetic sleeve; 16. Outer convex reinforcing rib; 17. Positioning notch; 18. Through hole. Specific embodiments

[0025] The following further elaborates on the above and additional technical features and advantages of the present utility model in conjunction with the accompanying drawings.

[0026] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present utility model and do not limit the protection scope of the present utility model.

[0027] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0028] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As Figures 1-5 shown, a sealing structure for a magnetic roller includes a sealing end cover 1. A mounting slot hole 2 is provided at the center of the sealing end cover 1. An accommodating groove 3 is provided in the sealing end cover 1 outside the mounting slot hole 2. A first sealing ring 4 is provided in the accommodating groove 3. A crimping ring groove 5 communicating with the accommodating groove 3 is provided at the inner end of the sealing end cover 1. A compression ring 6 is crimped in the crimping ring groove 5. The structure of the present utility model is simple. A first sealing ring is provided inside the sealing end cover and fixed by a compression ring, effectively preventing toner from entering the inside of the outer cylinder through the gap between the central shaft and the sealing end cover during use, thereby ensuring the normal use of the magnetic roller.

[0030] In the present utility model, a sealing convex ring 7 is provided in the accommodating groove 3. A sealing ring groove 8 is provided at a position corresponding to the first sealing ring 4 and the sealing convex ring 7. The sealing convex ring 7 is inserted into the sealing ring groove 8. The sealing ring groove 8 of the first sealing ring 4 is sleeved on the sealing convex ring 7, which can not only quickly and accurately position, but also strengthen the strength of the first sealing ring 4 to prevent deformation during use.

[0031] In the present utility model, outer ring grooves 9 are provided at intervals on the outer wall of the sealing end cover 1. A second sealing ring 10 is provided in the outer ring grooves 9. Through the second sealing ring 10, effective sealing can be achieved between the outer wall of the sealing end cover 1 and the inner wall of the outer cylinder 13 of the magnetic roller.

[0032] In the present utility model, an annular end head 11 is provided at the outer end of the sealing end cover 1. The outer diameter of the annular end head 11 is greater than the outer diameter of the sealing end cover 1. When the sealing end cover 1 and the outer cylinder 13 of the magnetic roller are assembled in the present utility model, the annular end head 11 abuts against the end of the outer cylinder 13. The outer diameter of the annular end head 11 is the same as the outer diameter of the outer cylinder 13.

[0033] In the present utility model, a connecting convex ring 12 is provided at the center of the outer end face of the sealing end cover 1. Through the connecting convex ring 12, the contact area between it and the outer wall of the central shaft 14 of the magnetic roller can be increased, effectively preventing toner from entering the interior of the outer cylinder 13.

[0034] A magnetic roller of the present utility model includes an outer cylinder 13. A central shaft 14 is provided in the outer cylinder 13. A magnetic sleeve 15 is provided on the outer wall of the central shaft 14. The magnetic sleeve 15 is arranged in the outer cylinder 13. A sealing structure as described above is provided at the end of the outer cylinder 13. At least one end of the central shaft 14 extends out of the sealing structure.

[0035] The magnetic sleeve 15 of the present utility model is a sector-shaped magnetic sleeve. Six sector-shaped magnetic sleeves are provided on the central shaft 14. The included angle of each sector-shaped magnetic sleeve is 60°. Outer convex reinforcing ribs 16 are densely arranged on the outer wall of the outer cylinder 13.

[0036] A positioning notch 17 is provided at one end of the central shaft 14, and a through hole 18 of the axis of the central shaft 14 is provided at the other end of the central shaft 14.

[0037] The above shows and describes 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 principle 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 sealing structure for a magnetic roller, comprising a sealing end cover (1), a mounting slot (2) being provided at the center of the sealing end cover (1), a receiving groove (3) being provided in the sealing end cover (1) outside the mounting slot (2), a first sealing ring (4) being provided in the receiving groove (3), a crimping ring groove (5) being provided at the inner end of the sealing end cover (1) and being connected to the receiving groove (3), and a clamping ring (6) being crimped to the crimping ring groove (5).

2. A sealing structure for a magnetic roller according to claim 1, characterized in that: A sealing convex ring (7) is provided in the accommodating groove (3), a sealing ring groove (8) is provided at positions corresponding to the first sealing ring (4) and the sealing convex ring (7), and the sealing convex ring (7) is inserted into the sealing ring groove (8).

3. A sealing structure for a magnetic roller according to claim 1 or 2, characterized in that: Outer annular grooves (9) are arranged at intervals on the outer wall of the sealing end cover (1).

4. A sealing structure for a magnetic roller according to claim 3, characterized in that: A second sealing ring (10) is arranged in the outer ring groove (9).

5. The sealing structure for a magnetic roller according to claim 1, characterized in that: An annular end cap (11) is provided at the outer end of the sealing end cap (1), and the outer diameter of the annular end cap (11) is greater than the outer diameter of the sealing end cap (1).

6. A sealing structure for a magnetic roller according to claim 5, characterized in that: A connecting convex ring (12) is provided at the centre of the outer end surface of the sealing end cover (1).

7. A magnetic roller, characterized in that: The invention comprises an outer cylinder (13), a central shaft (14) is arranged inside the outer cylinder (13), a magnetic sleeve (15) is arranged on the outer wall of the central shaft (14), the magnetic sleeve (15) is arranged inside the outer cylinder (13), a sealing structure according to any one of claims 1 to 6 is arranged at the end of the outer cylinder (13), and at least one end of the central shaft (14) protrudes from the sealing structure.

8. The magnetic roller according to claim 7, characterized in that: The magnetic sleeve (15) is a sector-shaped magnetic sleeve, and six sector-shaped magnetic sleeves are arranged on the central axis (14), with the included angle of each sector-shaped magnetic sleeve being 60°.

9. The magnetic roller according to claim 7, characterized in that: The outer wall of the outer cylinder (13) is densely covered with outwardly convex reinforcing ribs (16).

10. The magnetic roller according to claim 7, characterized in that: A positioning notch (17) is provided at one end of the central shaft (14), and a through hole (18) is provided at the other end of the central shaft (14) along the axis of the central shaft (14).

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