CN214474433U - Carbon powder box - Google Patents

Abstract

The utility model discloses a toner cartridge capable of automatic counting and resetting, which comprises a toner cartridge main body and an automatic counting and resetting mechanism, wherein the automatic counting and resetting mechanism comprises a counting and resetting gear, a transmission gear, a torsion spring, a limiting part and a spring; the counting reset gear comprises a counting detection protrusion group, an upper limiting rib, a lower reset rib and a gear part; the set of count detection protrusions includes a main protrusion corresponding to a central angle of about 165 and one or more sub-protrusions. Simple structure, count reset accurately, have improved the market competitiveness of cartridge.

Description

Carbon powder box

Technical Field

The utility model relates to a but printer cartridge that automatic counting resets.

Background

The laser developing box (namely, carbon powder box) of the printer disclosed by the Chinese patent CN201710395723.X comprises a box body and a counting reset mechanism, wherein the box body comprises a developing roller, a powder feeding roller, a powder discharging knife, carbon powder, a stirring frame, a plastic body and a side cover, and the counting reset mechanism comprises a transmission gear, a counting reset gear and a torsion spring. As shown in fig. 1, the transmission gear 100 of such toner cartridge is a dual-gear 110/130 structure, the structure of the counting reset gear 200 is more complex, and includes a dual-gear 220/240 and three ribs 230/253/252, the counting reset mechanism is complex and is easy to cause that the counting reset is not accurate enough, and the problem that the printer cannot detect the toner cartridge frequently occurs. When the toner cartridge falls into the printer for the first time, the counting reset gear rotates unidirectionally under the transmission of the transmission gear, intermittently presses and disengages the counting feeler lever of the printer for multiple times, and then stays at a certain position deviated from the initial position of the counting reset gear to finish the counting reset work. When the carbon powder is exhausted, if a user wants to add the powder for reuse, the counting reset gear needs to be reset and manually reset to the initial position, otherwise, the carbon powder box cannot be used continuously. In the production link, the carbon powder box is subjected to printing test, and the counting reset gear deviates from the initial position, so that manual reset operation is required after production test, and the production process and the production cost are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a toner cartridge capable of automatic counting and resetting, which can solve the problems of complex counting and resetting structure, inaccurate counting and resetting, no toner cartridge detection by a printer, difficult resetting and the like of the toner cartridge; the counting reset machine of the toner cartridge is simpler in structure, more accurate in counting reset and capable of automatically resetting, manual reset operation of the counting reset gear is not needed after production test or user powder adding, operation procedures are reduced, and production cost is reduced; meanwhile, the carbon powder box is more convenient to add and reuse powder, and energy conservation and environmental protection are promoted.

In order to achieve the purpose, the specific scheme is as follows:

a toner cartridge capable of automatically counting and resetting comprises a toner cartridge main body and an automatic counting and resetting mechanism, wherein the toner cartridge main body comprises a developing roller, a toner feeding roller, a toner discharging knife, toner, a stirring frame, a plastic body and an edge cover; the automatic counting reset mechanism comprises a counting reset gear, a transmission gear, a torsion spring, a limiting piece and a spring; the counting reset gear comprises a counting detection protrusion group, an upper limiting rib, a lower reset rib and a gear part; the counting detection protrusion group comprises a main protrusion and one or more auxiliary protrusions, wherein the corresponding circle center angle value of the main protrusion is more than 160 degrees and less than 170 degrees; the transmission ratio of the counting reset gear 1 to the transmission gear 2 is 3: 2 and 5: 2.

The projection group of the counting reset gear consists of a main projection, a first gap, an auxiliary projection and a second gap; the circle center angle value corresponding to the second gap is 50-70 degrees.

The projection group of the counting reset gear consists of a main projection, a first gap, an auxiliary projection and a second gap; the corresponding circle center angle values of the first gap and the second gap are 50-70 degrees.

The protrusion group of the counting reset gear consists of a main protrusion, a first gap, a first auxiliary protrusion, a second gap, a second auxiliary protrusion and a third gap; the circle center angle value corresponding to the first gap and the third gap is 50-70 degrees.

The locating part comprises buckle, support column and coupling part.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Figure 1 is a schematic view of the structure of a counter reset gear and a transmission gear of a prior art toner cartridge.

Fig. 2 is a schematic view of a counting reset mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic view of a matching structure of a limiting member and a side cover according to an embodiment of the present invention.

Fig. 4 is a perspective view of a counting reset gear in the counting reset mechanism according to the embodiment of the present invention.

Fig. 5a is a schematic view of a protrusion layout view a of the counter reset gear according to the embodiment of the present invention.

Fig. 5b is a schematic view of a protrusion layout b of the counter reset gear according to the embodiment of the present invention.

Fig. 5c is a schematic view of a protrusion layout c of the counter reset gear according to the embodiment of the present invention.

In the figure: 1. a counting reset gear; 2. a transmission gear; 3. a torsion spring; 4. a limiting member; 5. a spring; 6. a side cover; 11. counting the detection protrusion groups; 12. a limit rib; 13. a reset rib; 14. a gear portion; 41. a buckle 42 and a support column; 43. a connecting part; 61. installing a shaft; 62. an insertion hole; 63. mounting a column; 111. a main protrusion; 112. a secondary projection; 110. a gap; 141. a toothed segment; 142. a toothless segment; 611. an axis blind hole.

Detailed Description

As shown in fig. 2 to 4, a toner cartridge capable of automatically counting and resetting includes a toner cartridge main body and an automatic counting and resetting mechanism, wherein the toner cartridge main body includes a developing roller, a powder feeding roller, a powder discharging knife, carbon powder, a stirring frame, a plastic body and a side cover 6; the automatic counting reset mechanism comprises a counting reset gear 1, a transmission gear 2, a torsion spring 3, a limiting part 4 and a spring 5.

The count reset gear 1 includes a count detection protrusion group 11, an upper limit rib 12, a lower reset rib 13, and a gear portion 14.

The counting reset gear 1 is provided with a counting detection protrusion group 11 on the outer end face far away from the end face of the toner cartridge, and the counting detection protrusion group 11 comprises a main protrusion 111 and one or more auxiliary protrusions 112; a gap 110 is formed between two adjacent protrusions, the protrusions are used for abutting against a counting contact rod in the printer, and the interference of the protrusions is relieved through the gap. The circle center angle value corresponding to the main protrusion 111 is greater than 160 degrees and less than 170 degrees, and 165 degrees is preferred in the embodiment; the number of the auxiliary protrusions 112 and the corresponding central angle value thereof are different according to the count values preset by different specifications of the toner cartridge.

The middle part of the counting reset gear 1 is provided with a gear part 14, the gear part 14 comprises a toothed section 141 and a non-toothed section 142, and when the toothed section 141 of the counting reset gear 1 is meshed with the transmission gear 2, the gear part receives the rotating force to rotate; when the toothless section 142 of the counter reset gear 1 faces the transmission gear 2, the meshing is disengaged to stop the transmission of the rotational force, thereby realizing the condition that the counter reset gear 1 is intermittently meshed and rotated; the transmission gear 2 is a single full-tooth surface, the transmission gear 2 obtains a rotating force from a gear set of the toner cartridge and then transmits the rotating force to the counting reset gear 1, and the transmission ratio of the transmission gear 2 to the counting reset gear 1 is 2: 5 and 2: 3, the present embodiment preferably has 1: 2.

the outer end face of the counting reset gear 1 is further provided with an upper limiting rib 12 which is matched with the buckle 41 of the limiting part to work and is used for stopping the rotation of the counting reset gear 1.

The inner side surface of the counting reset gear 1 is provided with a lower reset rib 13 which is matched with the torsion spring 3 which is radially abutted, and when the toothless section 142 of the counting reset gear 1 does not have meshing rotary power opposite to the transmission gear 2, the counting reset gear 1 is provided with rotary power which continuously rotates forwards.

The inner side of the side cover 6 of the toner cartridge main body is provided with a mounting shaft 61 of the counting reset gear 1 and a mounting column 63 of the torsion spring 3; the mounting shaft 61 is provided with a blind hole 611 of the axis when viewed from the outer end face of the side cover 6, and the spring 5 is assembled in the blind hole 611; the end face of the side cover 6 is also provided with an insertion hole 62 of the catch 41 of the stopper 4.

The limiting member 4 comprises a buckle 41, a supporting column 42 and a coupling part 43, the supporting column 42 is inserted into the axle center blind hole 611 of the side cover, the spring 5 in the blind hole 611 keeps the limiting member 4 from extending outwards, and the buckle 41 is further provided with an inverted buckle for preventing the limiting member 4 from sliding out of the side cover.

As shown in fig. 5a, the projection layout view a of the counter reset gear is sequentially a main projection 111, a first gap 110a, a sub projection 112, and a second gap 110b when viewed clockwise; the first gap 110a and the second gap 110b each have a center angle of 50-70 °, preferably 60 °.

As shown in fig. 5b, the projection layout b of the counter reset gear is sequentially a main projection 111, a first gap 110a, a sub projection 112b, and a second gap 110b when viewed clockwise; the second gap 110b corresponds to a center angle of 50-70, preferably 60 in this embodiment.

As shown in fig. 5c, the projection layout diagram c of the counter reset gear is sequentially provided with a main projection 111, a first gap 110a, a first auxiliary projection 112a, a second gap 110b, a second auxiliary projection 112b and a third gap 110c when viewed in a clockwise direction; the circle center angle value corresponding to the first gap 110a is 50-70 degrees, and the preferred angle in the embodiment is 60 degrees; the third gap 110c corresponds to a center angle of 50-70, preferably 60 in this embodiment.

The process of the counting reset gear 1 with three different protrusion layouts a, b and c is the same except that the duration of the contact and the release of the contact with the counting feeler lever of the printer is different due to the different widths of the protrusions and the gaps, and the specific working process of counting identification and automatic reset is described by using a counting reset gear c type as follows:

after the new toner cartridge is loaded into the printer, the initial position state of the counting reset mechanism is as follows: the connection part 43 of the limiting piece 4 is pressed by the inner side wall of the printer to retract, the buckle 41 moves downwards and is positioned right behind the upper limiting rib 12, the front end of the main protrusion 111 of the counting reset gear 1 abuts against a counting contact rod of the printer, the front end of the toothed section 141 of the counting reset gear 1 is meshed with the transmission gear 2, the torsion spring 3 is in a natural loose state, and the toner cartridge is in a ready state.

After the printer starts the power supply, the counting reset gear 1 rotates due to the meshing of the transmission gear 2, and the main protrusion 111 continuously butts against a counting contact rod of the printer; continuously, entering the first gap 110a section, the counting reset gear 1 releases the interference on the counting touch rod of the printer; continuously, the first sub-projection 112a collides against the printer counter feeler lever; continuously, entering a second gap 110b section, and the counting reset gear 1 releases the conflict on the counting touch rod of the printer; continuously, the second sub-projection 112b collides with the printer counter feeler lever; continuously, after the meshing between the toothed section 141 of the counting reset gear 1 and the transmission gear 2 is finished, the non-toothed section 142 of the counting reset gear 1 is converted to a non-meshing state facing the transmission gear 2, and enters a third gap 110c section, the counting reset gear 1 releases the interference on the counting touch rod of the printer, simultaneously, the lower reset rib 13 of the counting reset gear 1 is in a tension abutting state with the torsion spring 3, the counting reset gear 1 rapidly continues to rotate forward for a certain angle under the acting force of the torsion spring 3 until the upper limit rib 12 of the counting reset gear 1 abuts against the buckle 41 of the limit piece 4 to be forced to stop rotating and stop at the position, and the front end of the main projection 111 of the counting reset gear 1 collides with the counting feeler lever of the printer again at this time, but the lower reset rib 13 of the counter reset gear 1 is still in tension abutment with the torsion spring 3. So far, the printer has accomplished count discernment work, and the cartridge is in the print job ready state.

When the toner cartridge is taken out from the printer or the drum rack, the connection part 43 of the limiting piece 4 is not extruded by external force, the limiting piece 4 pops outwards under the action force of the spring 5, the buckle 41 moves upwards, and the limitation on the upper limiting rib 12 is removed, at the moment, the counting reset gear 1 continues to rotate forwards for a certain angle under the action force of the torsion spring 3, so that the front end of the toothed section 141 of the counting reset gear 1 is meshed with the transmission gear 2 again, the main protrusion 111 of the counting reset gear 1 also continues to abut against a counting touch rod of the printer, and the upper limiting rib 12 and the buckle 41 are dislocated and positioned in front; when the toner cartridge is loaded into the printer again, the coupling portion 43 of the stopper 4 is pressed by the inner side wall of the printer and retracted, the latch 41 descends vertically, the upper limit rib 12 is located right in front of the latch 41, and the counting reset gear 1 and the counting reset mechanism both return to their initial positions, which completes the automatic reset operation of the counting reset mechanism.

Claims (5)

1. A toner cartridge capable of automatically counting and resetting comprises a toner cartridge main body and an automatic counting and resetting mechanism, wherein the toner cartridge main body comprises a developing roller, a toner feeding roller, a toner discharging knife, toner, a stirring frame, a plastic body and a side cover (6); the method is characterized in that: the automatic counting reset mechanism comprises a counting reset gear (1), a transmission gear (2), a torsion spring (3), a limiting piece (4) and a spring (5); the counting reset gear (1) comprises a counting detection protrusion group (11), a limiting rib (12), a reset rib (13) and a gear part (14); the counting detection protrusion group (11) comprises a main protrusion (111) with a corresponding circle center angle value larger than 160 degrees and smaller than 170 degrees; the transmission ratio of the counting reset gear (1) to the transmission gear (2) is 3: 2 and 5: 2.

2. The toner cartridge of claim 1, wherein: the protrusion group (11) of the counting reset gear consists of a main protrusion (111), a first gap (110 a), an auxiliary protrusion (112) and a second gap (110 b); the second gap (110 b) corresponds to a centre angle value of 50-70 degrees.

3. The toner cartridge of claim 1, wherein: the protrusion group (11) of the counting reset gear consists of a main protrusion (111), a first gap (110 a), an auxiliary protrusion (112) and a second gap (110 b); the first gap (110 a) and the second gap (110 b) correspond to circle center angles of 50-70 degrees.

4. The toner cartridge of claim 1, wherein: the protrusion group (11) of the counting reset gear consists of a main protrusion (111), a first gap (110 a), a first auxiliary protrusion (112 a), a second gap (110 b), a second auxiliary protrusion (112 b) and a third gap (110 c); the first gap (110 a) and the third gap (110 c) correspond to circle center angles of 50-70 degrees.

5. The toner cartridge of claim 1, wherein: the limiting piece (4) is composed of a buckle (41), a supporting column (42) and a connecting part (43).

Images