CN212433585U

CN212433585U - Charging roller

Info

Publication number: CN212433585U
Application number: CN202021247782.6U
Authority: CN
Inventors: 杨献生; 程磊
Original assignee: Henan Green Express Rubber & Plastic Products Co ltd
Current assignee: Henan Green Express Rubber & Plastic Products Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-29
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a charge roller, it includes back shaft and electrically conductive elastic layer, the back shaft is inserted in the electrically conductive elastic layer, the back shaft includes jackshaft and end shaft, the jackshaft includes a plurality of arc pieces of splicing each other, the end shaft has two, and two end shafts are fixed respectively and are used for supporting the jackshaft at the both ends of jackshaft. The utility model discloses have the convenience and insert the intraformational effect of electrically conductive elastic layer with the back shaft in middle.

Description

Charging roller

Technical Field

The utility model belongs to the technical field of the technique of a printer part and specifically relates to a charge roller is related to.

Background

The working principle of laser printer, digital copier, common paper facsimile machine and laser multifunctional machine is mainly passed through six processes of charging, exposure, development, transfer printing, fixing and cleaning. When the charging roller works, the surface of the charging roller is charged with uniform charges to obtain a certain surface potential, then exposure is carried out according to image information of pictures and texts to form an electrostatic latent image, the electrostatic latent image is developed by a developing device, the latent image is converted into a visible toner image, the toner is transferred to printing paper or other media by a transfer device, and finally the printing paper is heated, pressurized and melted by a fixing device, so that the characters and images are fused on the paper after the toner is melted.

Patent document No. CN202837816U discloses a charging roller, which comprises a base shaft, two NBR rubber layers disposed on the outer surface of the base shaft, wherein the outer rubber layer is thinner than the inner rubber layer, and a conductive coating is sprayed on the surface of the outer NBR rubber layer. The base shaft is made of metal materials and used for supporting the inner rubber layer and the outer rubber layer.

Patent document with publication number CN205880504U discloses a charging roller, which comprises a metal core, a conductive elastic layer wrapped outside the metal core, a resistance layer wrapped outside the conductive elastic layer, and a positioning ring for fixing the conductive elastic layer outside the metal core, wherein the positioning ring is respectively arranged at two ends of the conductive elastic layer, and the metal core is used for supporting the conductive elastic layer outside the metal core.

In the above-disclosed document, since the metal core needs to be inserted into the elastic layer of the outer layer, it is difficult to insert the elastic layer of the outer layer into the metal core at the time of installation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a roller charges, it has the convenience and inserts the intraformational effect of electrically conductive elastic layer with the back shaft in the middle of.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a charge roller, includes back shaft and electrically conductive elastic layer, the back shaft is inserted in electrically conductive elastic layer, the back shaft includes jackshaft and end shaft, the jackshaft includes a plurality of arc pieces of splicing each other, the end shaft has two, and two end shafts are fixed respectively and are used for supporting the jackshaft at the both ends of jackshaft.

Through adopting above-mentioned technical scheme, during the use, with the whole shrink of a plurality of arc pieces of splicing each other on the jackshaft, make the jackshaft along the length direction disect insertion of electrically conductive elastic layer, then expand the arc piece of splicing each other again and make and form columniform jackshaft to support electrically conductive elastic layer through the jackshaft, and the end shaft that connects at the jackshaft both ends is further fixed to the shape of jackshaft, thereby can more conveniently insert the back shaft in electrically conductive elastic layer.

The utility model discloses further set up to: the jackshaft includes middle arc piece, side arc piece and connects the arc piece, the side arc piece has two, and two side arc pieces articulate respectively at the both ends of middle arc piece, when the centre of a circle coincidence of middle arc piece and two side arc pieces, the outside of middle arc piece and two side arc pieces forms circularly, it is used for two side arc pieces of fixed connection to connect the arc piece.

Through adopting above-mentioned technical scheme, two side arcs articulate on middle arc, through the rotation of side arc for middle arc, make the jackshaft shrink, when the installation, rotate two side arcs round the pin joint with two side arcs and can expand two side arcs simultaneously to make things convenient for the installation of jackshaft.

The utility model discloses further set up to: two the inboard of middle arc piece is kept away from to the side arc piece has been seted up and has been stepped down the unfilled corner, connect the arc piece and connect the position at the unfilled corner of stepping down.

By adopting the technical scheme, the yielding unfilled corner can reduce the mutual extrusion between the side arc pieces and reduce the damage to the conductive elastic layer when the side arc pieces rotate.

The utility model discloses further set up to: the connecting arc piece is provided with a plurality of bolts, the bolts penetrate through the connecting arc piece to be in threaded connection with the side arc piece, and the middle part of the intermediate shaft is of a hollow structure.

Through adopting above-mentioned technical scheme, set up a plurality of bolts on connecting the arc piece, be connected with two side arc pieces respectively through connecting the arc piece to it is more firm to make the jackshaft pass through the fixed of connecting the arc piece, and the jackshaft is hollow structure simultaneously, and the convenience is rotated the bolt.

The utility model discloses further set up to: the arc length of the middle arc sheet is equal to that of the side arc sheets.

Through adopting above-mentioned technical scheme, the arc length that middle arc piece is equals with the arc length that side arc piece is to divide into the middle arc piece and the side arc piece of three equal arc pieces equally with the jackshaft, make the jackshaft collapsible to minimum size, further make things convenient for the jackshaft to insert in the electrically conductive elastic layer.

The utility model discloses further set up to: the two ends of the intermediate shaft are in taper thread connection with the end parts of the end shafts.

Through adopting above-mentioned technical scheme, jackshaft both ends and end axle awl threaded connection can make the end axle more stable to the structure of jackshaft through the support of end axle to the jackshaft.

The utility model discloses further set up to: one end of the end shaft connected with the middle shaft is provided with a circular table part, and the end shaft is connected with the middle shaft through the circular table part.

By adopting the technical scheme, the end part of the end part is provided with the circular boss part, and when the end shaft is connected with the middle shaft, the connection between the circular boss part and the middle shaft is more convenient.

The utility model discloses further set up to: and a shoulder is arranged on the end shaft, and the diameter of the shoulder is larger than that of the intermediate shaft.

Through adopting above-mentioned technical scheme, set up the circular bead on the end shaft, the diameter of circular bead is greater than the diameter of jackshaft to can keep off the both ends of electrically conductive elastic layer through the circular bead.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the middle shaft is directly inserted along the length direction of the conductive elastic layer by integrally contracting a plurality of arc sheets spliced with each other on the middle shaft, and then the arc sheets spliced with each other are unfolded to form a cylindrical middle shaft, so that the conductive elastic layer is supported by the middle shaft, and the end shafts connected to the two ends of the middle shaft further fix the shape of the middle shaft, so that a support shaft can be conveniently inserted into the conductive elastic layer;

2. the middle shaft is contracted through the rotation of the side arc pieces relative to the middle arc piece, and meanwhile, when the middle shaft is installed, the two side arc pieces can be unfolded through rotating the two side arc pieces around the hinged points, so that the middle shaft is convenient to install;

3. set up a plurality of bolts through connecting the arc piece, be connected with two side arc pieces respectively through connecting the arc piece to make the jackshaft more firm through the fixed of connecting the arc piece, the jackshaft is hollow structure simultaneously, and the convenience is rotated the bolt.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a schematic cross-sectional structure of the present invention;

fig. 4 is a schematic structural view of the middle arc piece and the side arc pieces in a contracted state.

In the figure, 1, supporting the shaft; 11. an intermediate shaft; 111. a middle arc sheet; 112. side arc sheets; 113. connecting the arc sheets; 114. abdicating and unfilled corners; 115. a bolt; 12. an end shaft; 121. a circular table portion; 2. a conductive elastic layer; 3. a resistive layer; 4. and (7) a shoulder.

Detailed Description

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

Referring to fig. 1 and fig. 2, for the utility model discloses a charging roller, including back shaft 1, the outside cover of back shaft 1 is equipped with electrically conductive elastic layer 2, and the outside of electrically conductive elastic layer 2 is provided with resistive layer 3, and resistive layer 3 and electrically conductive elastic layer 2 are rubber materials and make to the thickness of resistive layer 3 is less than the thickness of electrically conductive elastic layer 2. The support shaft 1 is made of a metal material.

Referring to fig. 2, the supporting shaft 1 includes an intermediate shaft 11 and an end shaft 12, the end shaft 12 has two ends respectively connected to the intermediate shaft 11, so that the supporting shaft 1 is formed by the intermediate shaft 11 and the two end shafts 12, the end shaft 12 is located outside the conductive elastic layer 2, the length of the intermediate shaft 11 is equal to that of the conductive elastic layer 2, the intermediate shaft 11 is inserted into the conductive elastic layer 2, and the end shaft 12 is connected to the intermediate shaft 11 and located outside the conductive elastic layer 2.

Referring to fig. 3 and 4, the inside of jackshaft 11 is hollow structure, jackshaft 11 includes middle arc piece 111, side arc piece 112 and connection arc piece 113, middle arc piece 111 and side arc piece 112 are arc, and side arc piece 112 has two, every side arc piece 112 forms the arc the same with middle arc piece 111 formation arc, when coinciding the middle arc piece 111 centre of a circle with two side arc piece 112 centres, middle arc piece 111 and two side arc piece 112 form circularly, two side arc pieces 112 articulate respectively in the both sides of middle arc piece 111, and the articulated shaft of side arc piece 112 and middle arc department is located jackshaft 11's hollow structure's inside. By rotating the two side arc pieces 112 about the rotation axis, the intermediate shaft 11 is deformed so that it is easy to insert the intermediate shaft 11 into the conductive elastic layer 2, and deformation of the conductive elastic layer 2 caused by the intermediate shaft 11 when inserted into the conductive elastic layer 2 can be reduced.

Referring to fig. 3 and 4, in order to make the two side arc pieces 112 have a smaller influence when rotating, the inner side positions of the two side arc pieces 112 away from the middle arc piece 111 are provided with the abdicating unfilled corner 114, the abdicating unfilled corner 114 can make one side arc piece 112 rotate inwards without extruding the other side arc piece 112, so that in the process of opening or closing the upper two side arc pieces 112, the extrusion deformation of the middle shaft 11 to the conductive elastic layer 2 can be reduced. Connect arc piece 113 in the position of the unfilled corner 114 of stepping down, expand two side arc pieces 112 back, will connect arc piece 113 and place the unfilled corner 114 department of stepping down and fill up the unfilled corner 114 department of stepping down, be provided with a plurality of bolts 115 on connecting arc piece 113, a plurality of bolts 115 are provided with two rows, every row of bolt 115 respectively with a side arc piece 112 threaded connection, run through connection arc piece 113 earlier when with side arc piece 112 threaded connection, every row of bolt 115 is along jackshaft 11's length direction evenly distributed, thereby when fixing bolt 115 on side arc piece 112, middle arc piece 111, side arc piece 112 and connection arc piece 113 relatively fixed connection.

Referring to fig. 2, a circular truncated cone 121 is arranged at one end of the end shaft 12 connected with the intermediate shaft 11, a larger end of the circular truncated cone 121 is fixedly arranged integrally with the end shaft 12, a tapered thread is arranged on a side wall of the circular truncated cone 121, inner tapered threads are respectively arranged at two ends of the intermediate shaft 11, the circular truncated cone 121 is connected with two ends of the intermediate shaft 11, so that the end portion is fixedly connected with the intermediate shaft 11, the diameter of the end shaft 12 is larger than that of the intermediate shaft 11, a shoulder 4 is formed at the joint of the end shaft 12 and the circular truncated cone 121, when the end portion is connected with the intermediate shaft 11, the side surface of the shoulder 4 abuts against the end portion of the guiding elastic layer, and therefore, in the using process, the guiding elastic layer 2 cannot move along the length direction of.

During the installation, earlier two side arc pieces 112 rotate to inboard round the axis of rotation with middle arc piece 111, make middle arc piece 111 and two side arc pieces 112 shrink, thereby insert electrically conductive elastic layer 2 with jackshaft 11 relatively easily in, expand two side arc pieces 112 again, will connect arc piece 113 and install on two side arcs, then connect end shaft 12 on jackshaft 11, thereby make back shaft 1 insert electrically conductive elastic layer 2 relatively easily in.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A charge roller, includes back shaft (1) and electrically conductive elastic layer (2), back shaft (1) inserts in electrically conductive elastic layer (2), its characterized in that: the supporting shaft (1) comprises an intermediate shaft (11) and end shafts (12), the intermediate shaft (11) comprises a plurality of arc sheets which are spliced with each other, the number of the end shafts (12) is two, and the two end shafts (12) are fixed at two ends of the intermediate shaft (11) respectively and are used for supporting the intermediate shaft (11).

2. A charging roller according to claim 1, characterized in that: jackshaft (11) are including middle arc piece (111), side arc piece (112) and connect arc piece (113), side arc piece (112) have two, and two side arc pieces (112) articulate respectively at the both ends of middle arc piece (111), when the centre of a circle coincidence of middle arc piece (111) and two side arc pieces (112), the outside of middle arc piece (111) and two side arc pieces (112) forms circularly, it is used for two side arc pieces (112) of fixed connection to connect arc piece (113).

3. A charging roller according to claim 2, characterized in that: two the inboard of middle arc piece (111) is kept away from in side arc piece (112) has seted up abdicating unfilled corner (114), connect arc piece (113) and connect the position at abdicating unfilled corner (114).

4. A charging roller according to claim 3, characterized in that: the connecting arc piece (113) is provided with a plurality of bolts (115), the bolts (115) penetrate through the connecting arc piece (113) to be in threaded connection with the side arc piece (112), and the middle part of the middle shaft (11) is of a hollow structure.

5. The charging roller according to claim 4, characterized in that: the arc length of the middle arc piece (111) is equal to that of the side arc piece (112).

6. A charging roller according to claim 1, characterized in that: the two ends of the intermediate shaft (11) are in taper thread connection with the end parts of the end shafts (12).

7. The charging roller as set forth in claim 6, wherein: one end of the end shaft (12) connected with the intermediate shaft (11) is provided with a circular table part (121), and the end shaft (12) is connected with the intermediate shaft (11) through the circular table part (121).

8. A charging roller according to claim 7, characterized in that: a shoulder (4) is arranged on the end shaft (12), and the diameter of the shoulder (4) is larger than that of the intermediate shaft (11).