Hollow charging roller with stable conductive plug structure

Abstract

The invention relates to the technical field of charging rollers, in particular to a hollow charging roller with a stable conductive plug structure, which comprises a hollow roller shaft, a conductive sleeve and a threaded plug, the outer side of the hollow roller shaft is fixedly connected with a conductive sleeve, the two ends of the hollow roller shaft are in threaded connection with threaded plugs, and fastening mechanisms are arranged in the threaded plugs. The fastening mechanism comprises an empty groove formed in one side of the threaded plug, and a rotary handle is rotationally connected to the inner wall of the empty groove. According to the hollow charging roller with the stable conductive plug structure, the two sets of threaded plugs are rotationally installed at the two ends of the hollow roller shaft correspondingly, then the rotary handles are rotated to prevent the threaded plugs from loosening, and the two ends of the hollow roller shaft are plugged.

Description

Technical Field

[0001] The present invention relates to the technical field of charging rollers, and specifically to a hollow charging roller with a stable conductive plug structure. Background Art

[0002] The charging roller is a key component in the imaging process of a laser printer. Its core function is to uniformly charge the surface of the photosensitive drum by rotating and contacting it. The charging roller is composed of a metal core and a conductive rubber layer. There are still certain defects in the existing charging rollers during use, such as;

[0003] Most of the existing charging rollers are solid, consuming more materials during production, resulting in higher costs. During use, they are heavier and require more electricity. Summary of the Invention

[0004] The purpose of the present invention is to provide a hollow charging roller with a stable conductive plug structure to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A hollow charging roller with a stable conductive plug structure, comprising: a hollow roller shaft, a conductive sleeve, and a threaded plug;

[0006] The outer side of the hollow roller shaft is fixedly connected with a conductive sleeve, and threaded plugs are threadedly connected to both ends of the hollow roller shaft. A fastening mechanism is arranged inside the threaded plugs;

[0007] The fastening mechanism includes an empty groove opened on one side of the threaded plug, and a rotating handle is rotatably connected to the inner wall of the empty groove.

[0008] Preferably, a storage groove is opened inside the threaded plug on the side far from the empty groove. A bidirectional trapezoidal lead screw is rotatably penetrated between the inner walls of the storage groove and the empty groove, and the bidirectional trapezoidal lead screw is connected to one side of the rotating handle by a screw.

[0009] Preferably, two groups of sliders are threadedly connected to the outer side of the bidirectional trapezoidal lead screw.

[0010] Preferably, drive plates are rotatably connected to the lower sides of the two groups of sliders.

[0011] Preferably, the other end of the drive plate is rotatably connected to a pressing plate, and the pressing plate penetrates and slides on the inner wall of the storage groove through a through port.

[0012] Preferably, two groups of the drive plates and the pressing plates are symmetrically arranged up and down with respect to the central axis of the bidirectional trapezoidal lead screw.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By rotatably installing two sets of threaded plugs at both ends of the hollow roller shaft respectively to block both ends of the hollow roller shaft, then rotating the rotating handle to drive the pressing plate to slide outwards to press the inner wall of the hollow roller shaft, preventing the threaded plugs from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0016] Figure 2 is a schematic three-dimensional cross-sectional structure diagram of the hollow roller shaft of the present invention;

[0017] Figure 3 is a schematic three-dimensional structure diagram of the threaded plug of the present invention;

[0018] Figure 4 is a schematic three-dimensional cross-sectional structure diagram of the threaded plug of the present invention.

[0019] In the figure: 1, hollow roller shaft; 2, conductive sleeve; 3, threaded plug; 4, fastening mechanism; 401, empty slot; 402, rotating handle; 403, storage slot; 404, bidirectional trapezoidal lead screw; 405, slider; 406, transmission plate; 407, pressing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 and Figure 2 , the present invention provides a technical solution: a hollow charging roller with a stable conductive plug structure, including: a hollow roller shaft 1, a conductive sleeve 2 and a threaded plug 3; a conductive sleeve 2 is fixedly connected to the outside of the hollow roller shaft 1, and threaded plugs 3 are threadedly connected to both ends of the hollow roller shaft 1, and a fastening mechanism 4 is arranged in the threaded plug 3;

[0022] For this hollow charging roller with a stable conductive plug structure, the hollow roller shaft 1 is hollow, using less material in processing, having a lower cost, being light in weight, being more environmentally friendly and more energy-saving. There are threads on the inner wall of the hollow roller shaft 1. Rotating the threaded plug 3 into the hollow roller shaft 1 can block both ends of the hollow roller shaft 1 to prevent impurities from entering. The threaded plug 3 is made of conductive nylon material and can conduct electricity.

[0023] In Figures 1 - 4Among them, the fastening mechanism 4 includes an empty groove 401 opened on one side of the threaded plug 3, and a rotating handle 402 is rotatably connected to the inner wall of the empty groove 401.

[0024] For this hollow charging roller with a stable conductive plug structure, the empty groove 401 houses the rotating handle 402 to prevent the rotating handle 402 from being protruding. A hexagonal groove is opened on one side of the rotating handle 402, and the rotating handle 402 can be rotated directly by hand or with the help of a hexagonal screwdriver.

[0025] In Figure 4 Among them, a receiving groove 403 is opened in the threaded plug 3 on the side far from the empty groove 401. A bidirectional trapezoidal lead screw 404 is rotatably penetrated between the inner wall of the receiving groove 403 and the inner wall of the empty groove 401, and the bidirectional trapezoidal lead screw 404 is connected to one side of the rotating handle 402 by a screw.

[0026] For this hollow charging roller with a stable conductive plug structure, rotating the rotating handle 402 can drive the bidirectional trapezoidal lead screw 404 to rotate.

[0027] In Figure 4 Among them, two groups of sliders 405 are threadedly connected to the outside of the bidirectional trapezoidal lead screw 404.

[0028] For this hollow charging roller with a stable conductive plug structure, the lead angle of the bidirectional trapezoidal lead screw 404 is less than the equivalent friction angle, so that the slider 405 can self-lock on the bidirectional trapezoidal lead screw 404.

[0029] In Figure 4 Among them, a transmission plate 406 is rotatably connected to the lower sides of the two groups of sliders 405.

[0030] For this hollow charging roller with a stable conductive plug structure, both ends of the transmission plate 406 are rotatably connected to the slider 405 and the extrusion plate 407 respectively through two groups of vertical plates and rotating shafts.

[0031] In Figure 4 Among them, the other end of the transmission plate 406 is rotatably connected to an extrusion plate 407, and the extrusion plate 407 slides through a through port on the inner wall of the receiving groove 403.

[0032] For this hollow charging roller with a stable conductive plug structure, when rotating the rotating handle 402, it drives the bidirectional trapezoidal lead screw 404 to rotate. The bidirectional trapezoidal lead screw 404 drives the two groups of sliders 405 to move away from each other, pushing the transmission plate 406 to drive the extrusion plate 407 to slide outwards and squeeze against the inner wall of the hollow roller shaft 1, increasing the friction force to prevent the threaded plug 3 from loosening in the hollow roller shaft 1. The threaded plug 3 can be rotated to adjust the position of the threaded plug 3. When rotating the rotating handle 402 to fix the position where the threaded plug 3 is located, the threaded plug 3 is used to lengthen the hollow roller shaft 1.

[0033] In Figure 4Among them, there are two sets of transmission plates 406 and extrusion plates 407 symmetrically arranged above and below about the central axis of the bidirectional trapezoidal lead screw 404.

[0034] For this hollow charging roller with a stable conductive plug structure, when the two sets of sliders 405 move, they simultaneously drive the upper and lower two sets of extrusion plates 407 to slide outward together.

[0035] To sum up: When using this kind of hollow charging roller with a stable conductive plug structure, first, screw the threaded plug 3 into the end of the hollow roller shaft 1, then rotate the rotating handle 402 to reinforce the threaded plug 3, and then install the threaded plug 3 beside the toner cartridge of the printer. The bracket on the toner cartridge clamps the hollow roller shaft 1 and powers it on. During the printing process of the printer, the toner cartridge abuts against the conductive sleeve 2, driving the hollow roller shaft 1 to rotate and draw electricity, and applying the charge on the conductive sleeve 2 to the drum core. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hollow charging roller with a stable conductive plug structure, comprising: A hollow roller shaft (1), a conductive sleeve (2) and a threaded plug (3), characterized in that; The outer side of the hollow roller shaft (1) is fixedly connected with a conductive sleeve (2), and threaded plugs (3) are threadedly connected to both ends of the hollow roller shaft (1), and a fastening mechanism (4) is arranged in the threaded plug (3); The fastening mechanism (4) includes an empty groove (401) opened on one side of the threaded plug (3), and a rotating handle (402) is rotatably connected to the inner wall of the empty groove (401).

2. The hollow charging roller with a stable conductive plug structure according to claim 1, wherein: A storage groove (403) is opened in the threaded plug (3) on the side away from the empty groove (401), and a bidirectional trapezoidal lead screw (404) is rotatably penetrated between the inner wall of the storage groove (403) and the inner wall of the empty groove (401), and the bidirectional trapezoidal lead screw (404) is connected to one side of the rotating handle (402) by a screw.

3. The hollow charging roller with a stable conductive plug structure according to claim 2, characterized in that: Two groups of sliders (405) are threadedly connected to the outer side of the bidirectional trapezoidal lead screw (404).

4. A hollow charging roller with a stable conductive plug structure according to claim 3, characterized in that: Driving plates (406) are rotatably connected to the lower sides of the two groups of sliders (405).

5. The hollow charging roller with a stable conductive plug structure according to claim 4, wherein: The other end of the driving plate (406) is rotatably connected to a pressing plate (407), and the pressing plate (407) slides through a through port on the inner wall of the storage groove (403).

6. The hollow charging roller with a stable conductive plug structure according to claim 5, wherein: Two groups of the driving plates (406) and the pressing plates (407) are symmetrically arranged up and down about the central axis of the bidirectional trapezoidal lead screw (404).

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