CN207366935U - A kind of Delevoping cartridge - Google Patents

Abstract

It the utility model is related to a kind of Delevoping cartridge, including housing, it is arranged on the counting mechanism of housing longitudinal end, counting mechanism includes counting part, middleware, power reception part and separation assembly, separation assembly includes the separation member be combineding with each other and translation component, separation member includes bottom plate and the cam combined respectively with two sides of bottom plate and the second engaged portion, translation component includes the translation groove and supporting item be combineding with each other, the first translation groove and the second translation groove that groove includes being interconnected are translated, the two has pivot M and N respectively；Cam includes the first arc portion and the second arc portion being connected with each other, first arc portion is overlapping or parallel with the line MN of described two pivot M and N with the line JK of two separations J and K of the second arc portion, in scheme provided by the utility model, the frictional force that the supporting item is subject in movement is minimum, and power reception part is easier to depart from drive gear and combines.

Description

A kind of Delevoping cartridge

Technical field

Electrophotographic image forming field is the utility model is related to, more particularly to one kind is removably mounted on electrophotographic image forming Delevoping cartridge in equipment.

Background technology

At present in electrophotographic image forming field, laser printing is common working way, to reduce the use of terminal user Cost, existing printer manufacturer separate the drum component that electrostatic latent image is formed in printer and the Delevoping cartridge for accommodating developer Set, and the service life design of drum component is obtained longer, after the developer use in Delevoping cartridge, terminal user only needs Replace corresponding Delevoping cartridge.

To inform that terminal user will finish on the service life of Delevoping cartridge in time, each manufacturer is considered aobvious Delevoping cartridge life detecting device is set on shadow box, and one of which is is counted using counting gear, so as to calculate Delevoping cartridge The mode of service life.

Figure 1A is the view of the counting mechanism of existing Delevoping cartridge before counting；Figure 1B and Fig. 1 C are existing Delevoping cartridges Counting mechanism counting process view；Fig. 1 D are the views after the counting mechanism of existing Delevoping cartridge counts.

As shown in the figure, sensor gear 70 and stirrer-driven gear 69 are installed, in the sensor tooth on Delevoping cartridge Wheel 70 on be provided with master reference gear part 79, the contact projection to extend out from sensor gear 70 82 and from contact it is convex The protuberance 84 of 82 extensions is played, the master reference gear part 79 includes teeth portion 80 and toothless portion) 81；The contact projection 82 Rotate with the rotation of sensor gear 70, and contacted with the corresponding site of printer；The stirrer-driven gear 69 Provided circumferentially about to have external tooth 77, when external tooth 77 is with there is teeth portion 80 to engage, sensor gear 70 is driven in rotation, when external tooth 77 with When toothless portion) 81 engages, the driving of sensor gear 70 is interrupted.

It is provided with accordingly in printer and merges the infomation detection for realizing development box-counting for matching somebody with somebody with sensor gear 70 Mechanism 89, as shown in the figure, described information testing agency 89 includes the actuator 91 and optical sensor 92 to cooperate, it is described to hold The rotating part 94 of row device 91 can be rotated around rotating shaft 93, and actuator 91 includes being located at turn around the contact spine of 93 opposite sides of axis respectively Claw 95 and light-blocking part 96, meanwhile, the actuator 91 further includes block 99, extension spring 97 and fixed extension spring 97 Fixed block 98, actuator 91 are used to contact with the block contact site 100 being fixed in printer, limit the rotation of actuator 91 Gyration, extension spring 97 are used to reset actuator 91.

As illustrated in figures ib and 1 c, when sensor gear 70 shown in the 77 drives edge C of external tooth direction (shown in Fig. 1 D) During rotation, the protuberance 84 is contacted with contacting pawl portion 95, and forces actuator 91 to be rotated around direction shown in B in Figure 1B, because And light-blocking part 96 no longer blocks optical sensor 92, which can receive light；As shown in Figure 1 C, institute is worked as State after protuberance 84 departs from contact with contacting pawl portion 95, actuator 91 will under the action of extension spring 97 along Fig. 1 C D Shown direction resets, and the light-blocking part 96 comes back to the position for blocking optical sensor 92, thus, which will Light cannot be received；Hereafter, the sensor gear 70 continues the direction shown in 77 drives edge C of external tooth and rotates, such as Fig. 1 D institutes Show, when the toothless portion) 81 is opposite with external tooth 77, sensor gear 77 will no longer be driven rotation.

As shown in figure iD, when counting mechanism complete Counts after, although the external tooth 77 no longer with sensor gear 70 Engagement, but the two still leans on close, phenomenon of colliding with inevitably occurs in Delevoping cartridge in transit, at this time, external tooth 77 will It can collide with sensor gear 70, in the process, external tooth 77 or sensor gear 70 may be caused to be broken.

Utility model content

The utility model provides a kind of Delevoping cartridge, and counting mechanism therein is used to connect after completing to count, in counting mechanism Receiving the gear of driving force will isolate with drive gear, thus, effectively it can prevent Delevoping cartridge from gear breaking occurring in transit.

To achieve the above object, the utility model uses following technical scheme：

A kind of Delevoping cartridge, including housing, the counting mechanism for being arranged on housing longitudinal end, the counting mechanism include counting Part, middleware, power reception part and separation assembly, the counting part and power reception part are combined with middleware, separation group Part is combined with power reception part and housing respectively；The separation assembly includes the separation member be combineding with each other and translation component, translation Component is combined with housing, and separation member is combined with power reception part；The separation member includes bottom plate and respectively two with bottom plate The cam and the second engaged portion, second engaged portion that side combines are combined with power reception part；The translation component bag Include the translation groove and supporting item be combineding with each other, translation groove be located in one of them of separation member and housing, and supporting item is positioned at separating On another of part and housing；The translation groove includes the first translation groove being interconnected and the second translation groove, the two has respectively There are pivot M and N；The cam includes the first arc portion and the second arc portion being connected with each other, wherein, the first arc portion has at least A kind of radius, the constant-radius of the second arc portion；The line JK of two separations J and K of first arc portion and the second arc portion with Described two pivot M are overlapping or parallel with the line MN of N.

The Delevoping cartridge further includes the drive gear combined with power reception part, and the drive gear includes what is be combined with each other First gear, second gear and contact site, first gear receive driving force, and second gear is combined with counting mechanism, the contact Portion and at least one combination in first gear and second gear, the cam are opposite with contact site.

Before counting, the first arc portion is opposite with contact site；After the completion of counting, the second arc portion is opposite with contact site.

Before counting, the pivot of separation member and the minimum distance of contact site are r5, the maximum radius of first arc portion For r1, the maximum radius of the second arc portion is r2, is met：R1 ＜ r5 ＜ r2.

Second engaged portion is prominent "T"-shaped projection from bottom plate.

As described above, in scheme provided by the utility model, the first arc portion of the cam with two points of the second arc portion Line between boundary's point is overlapping or parallel with the pivot line of the first translation groove and the second translation groove, thus, when cam revolves Turn, when supporting item moves between the first translation groove and the second translation groove, the frictional force that supporting item is subject to is minimum, and the power connects Addressee is easier to depart from drive gear and combines.

Brief description of the drawings

Figure 1A is the view of the counting mechanism of existing Delevoping cartridge before counting.

Figure 1B and Fig. 1 C are the views of the counting mechanism counting process of existing Delevoping cartridge.

Fig. 1 D are the views after the counting mechanism of existing Delevoping cartridge counts.

Fig. 2 is overall structure diagram of the Delevoping cartridge that the utility model is related to from drive end.

Fig. 3 is overall structure diagram of the Delevoping cartridge that the utility model is related to from conducting end.

Fig. 4 is overall structure diagram of the Delevoping cartridge that the utility model is related to from front end.

Fig. 5 is that the Delevoping cartridge that the utility model is related to removes the overall structure diagram from drive end after end cap.

Fig. 6 is the decomposition diagram of counting mechanism in the Delevoping cartridge that the utility model is related to.

Fig. 7 A are the overall structure diagrams for the counting part that the utility model is related to.

Fig. 7 B are the internal structure schematic diagrams for the counting part that the utility model is related to.

Fig. 8 A are the structure diagrams for the middleware that the utility model is related to.

Fig. 8 B are the side views for the middleware that the utility model is related to.

Fig. 9 A are the overall structure diagrams for the power reception part that the utility model is related to.

Fig. 9 B are structure diagram of the power reception part that the utility model is related to from another angle.

Figure 10 A are the overall structure diagrams for the separation member that the utility model is related to.

Figure 10 B are structure diagram of the separation member that the utility model is related to from another angle.

Figure 10 C are the side views for the separation member that the utility model is related to.

Figure 11 A are view of the counting mechanism that the utility model is related to before counting with drive gear.

Figure 11 B are the sectional views of the rotation axis cutting of the counting mechanism along Figure 11 A.

Figure 11 C are separation assembly in the counting mechanism that the utility model is related to opposite positions with drive gear before counting Put graph of a relation.

Figure 12 A be the counting mechanism that the utility model is related to be near completion count when and the state of drive gear illustrate Figure.

Figure 12 B are the sectional views of the rotation axis cutting of the counting mechanism along Figure 12 A.

Figure 12 C be separation assembly in the counting mechanism that the utility model is related to be near completion count when and drive gear Relative position relation figure.

Figure 13 A are view of the counting mechanism that the utility model is related to drive gear after the completion of counting.

Figure 13 B are the enlarged diagrams of part R1 in Figure 13 A.

Figure 13 C are the sectional views of the rotation axis cutting of this counting mechanism along Figure 13 A.

Figure 13 D are the enlarged diagrams of part R2 in Figure 13 C.

Figure 13 E are phase of the separation assembly after the completion of counting with drive gear in the counting mechanism that the utility model is related to To location diagram.

Embodiment

Detailed description of the present invention embodiment below in conjunction with the accompanying drawings；For the clearer description embodiment of the present invention, starting It is defined as follows before description：The length direction for defining Delevoping cartridge is longitudinal direction X, and the width of Delevoping cartridge is transverse direction Y, Delevoping cartridge Short transverse is vertical Z.

[overall structure of Delevoping cartridge]

Fig. 2 is overall structure diagram of the Delevoping cartridge of the present invention from drive end；Fig. 3 is of the present invention Overall structure diagram of the Delevoping cartridge from conducting end；Fig. 4 is overall knot of the Delevoping cartridge of the present invention from front end Structure schematic diagram.

As shown in the figure, Delevoping cartridge P includes housing 10, respectively the conducting end E and drive end F positioned at housing longitudinal direction both ends, peace Handle 15 and development part 11 (as shown in Figure 4) on housing, and define：The direction that conducting end E is directed toward by drive end F is+X Direction, the direction that development part 11 is directed toward by handle is +Y direction, and +Y direction is front end, and -Y direction is rear end, and therefore, develop part 11 are located at the front end of handle 15.

As shown in Fig. 2, Delevoping cartridge P further includes the power input 20 for being arranged on housing longitudinal end, 30 and of counting mechanism End cap F1, the power input 20 and counting mechanism 30 both pass through end cap F1 stretchings, and power input 20 is used to connect from outside Driving force is received, and is transferred to counting mechanism 30, the counting mechanism 30 is used to coordinate with the infomation detection mechanism in printer, right Delevoping cartridge P is counted；As shown in figure 3, conducting end E includes conductive component E1, conductive component E1 is used for from external reception electricity Power, and it is supplied to Delevoping cartridge P.

Fig. 5 is that Delevoping cartridge of the present invention removes the overall structure diagram from drive end after end cap.

After power input 20 is received externally driving force, pass through the power transmission being coaxially disposed with power input 20 Gear 201 passes, as shown in figure 5, the Delevoping cartridge P further includes the development part set with 201 homonymy of power transmitting gear Gear 111, powder feeding part gear 121, stirring parts gear 131 and drive gear 141, wherein, development part gear 111, powder feeding part tooth Wheel 121 and stirring parts gear 131 are engaged with power transmitting gear 201, and drive gear 141 is engaged with stirring parts gear 131, together When, drive gear 141 also transfers a driving force to counting mechanism 30；In the embodiment of the present invention, the development part gear 111, send Powder part gear 121, stirring parts gear 131, drive gear 141 and counting mechanism 30 are installed in the drive end side of Delevoping cartridge P On 100；The drive gear 141 includes the first gear 141a, the second gear 141b that be combined with each other and contact site 141c, and first Gear 141a receives driving force by being engaged with stirring parts gear 131, and second gear 141b is combined with counting mechanism 30, institute State contact site 141c and at least one combination in first gear 141a and second gear 141b, it is preferred that contact site 141c Between first gear 141a and second gear 141b, and contact site 141c is opposite with counting mechanism 30.

[counting mechanism]

Fig. 6 is the decomposition diagram of counting mechanism in Delevoping cartridge of the present invention；Fig. 7 A are countings of the present invention The overall structure diagram of part；Fig. 7 B are the internal structure schematic diagrams of counting part of the present invention；Fig. 8 A be the present invention relates to Middleware structure diagram；Fig. 8 B are the side views of middleware of the present invention；Fig. 9 A are power of the present invention The overall structure diagram of receiving element；Fig. 9 B are structural representation of the power reception part of the present invention from another angle Figure；Figure 10 A are the overall structure diagrams of separation member of the present invention；Figure 10 B are separation members of the present invention from another The structure diagram of a angle observation；Figure 10 C are the side views of separation member of the present invention.

As shown in fig. 6, counting mechanism 30 includes counting part 31, middleware 32, power reception part 33 and separation assembly 300, it is described counting part 31 and power reception part 33 combined with middleware 32, separation assembly 300 respectively with power reception part 33 Combined with housing 10；The counting part 31 has rotation axis L1, and power reception part 33 has rotation axis L3；The present invention is implemented In example, the separation assembly 300 includes the separation member 34 be combineding with each other and translation component MC, separation member 34 and power reception part 33 With reference to translation component MC is combined with housing 10, and separation member 34 has rotation axis L4, and opposite with the contact site 141c.Institute State and count part 31 for coordinating with the infomation detection mechanism in printer, realize tally function；The middleware 32 is used to connect Part 31 and power reception part 33 are counted, realizes power reception part 33 relative to the relative movement between middleware 32；The power Receiving element 33 is used to be combined with drive gear 141, receives the driving force of drive gear 141, and drives counting part 31 to rotate；It is described Separation assembly 300 is used for after counting part 31 and completing to count, and power reception part 33 and drive gear 141 are departed from combination, so that Stop rotating so that counting part 31.

The counting mechanism 30 has the first position before counting and the second place after the completion of counting, at first Put, the counting part 31 is coaxial with separation member 34；In the second place, the counting part 31 and separation member 34 are not coaxial；Meanwhile The second place, power reception part 33 departs from drive gear 141 to be combined, correspondingly, the separation member 34 also will be farther away from drive Moving gear 141.

Meter is described in detail in 7A, Fig. 7 B, Fig. 8 A, Fig. 8 B, Fig. 9 A, Fig. 9 B, Figure 10 A, Figure 10 B and Figure 10 C below in conjunction with the accompanying drawings The structure of 30 each component of number mechanism.

Fig. 7 A are the overall structure diagrams of counting part of the present invention；Fig. 7 B are the interior of counting part of the present invention Portion's structure diagram；Fig. 8 A are the structure diagrams of middleware of the present invention；Fig. 8 B are middlewares of the present invention Side view；Fig. 9 A are the overall structure diagrams of power reception part of the present invention；Fig. 9 B are that power of the present invention connects Structure diagram of the addressee from another angle；Figure 10 A are the overall structure diagrams of separation member of the present invention；Figure 10B is structure diagram of the separation member of the present invention from another angle；Figure 10 C are separation members of the present invention Side view.

As shown in the figure, counting part 31 is overall cylindrical, including cylinder 310, counting prominent from cylinder 310 are dashed forward Play 311 and the first engaging portion 315 being arranged in cylindrical cavity；Middleware 32 includes middleware body 320 and respectively position The first engaged portion 321 in 320 two sides of middleware body；Power reception part 33 is gear mass 330, is included in gear mass The teeth portion 331 set on 330 excircles and the second engaging portion 332 inside gear mass 330, the teeth portion 331 are complete Tooth, meanwhile, the 3rd engaging portion 334 with combined hole 335 is additionally provided with the side opposite with second engaging portion 332, The combined hole 335 is used to be combined with separation assembly 300；The separation member 34 includes bottom plate 340 and respectively two with bottom plate 340 341 and second engaged portion 342 of cam that a side combines, second engaged portion 342 are connect by combined hole 335 with power Addressee 33 combines, thus, the second engaged portion 342 has and 335 matched shape of combined hole；The translation component MC includes phase The translation groove 344 and supporting item 35 mutually combined, wherein, translation groove 344 be located in one of them of separation member 34 and housing 10, props up Support member 35 be located at separation member 34 and housing 10 another on, that is, translate groove 344 and be arranged on separation member 34, supporting item 35 is set On the housing 10, alternatively, translation groove 344 is set on the housing 10, supporting item 35 is arranged on separation member 34, according to Delevoping cartridge P Structure, it is preferred that in the embodiment of the present invention, it is described translation groove 344 be arranged on separation member 34, supporting item 35 is arranged on housing On 10.

After counting mechanism 30 is completed to assemble, 315 and second engaging portion 332 of the first engaging portion is tied with first respectively Conjunction portion 321 combines, and the second engaged portion 342 is combined with the combined hole 335 of the 3rd engaging portion 334.Specifically, described first combines 315 and second engaging portion 332 of portion is sliding slot, and the first engaged portion 321 is that the combination projection 321 can be in sliding slot with reference to projection Slided in 315/332, therefore, counting part 31 and power reception part 33 can relatively move.

As shown in Figure 10 B and Figure 10 C, on separation member 34, protruded stigma 343 is provided projectingly with 341 homonymy of cam, has translated groove 344 in the protruded stigma 343, sees on the whole, and the protruded stigma 343 is surrounded by cam 341, translation groove 344 include being interconnected the One translation groove 344a and the second translation groove 344b, the supporting item 35 are the prominent support columns formed from housing 10, work as support When column 35 is in translation groove 344, support column 35 can be respectively in the first translation groove 344a and the second translation groove 344b inner supports point Off member 34 rotates, and when support column 35 is rotated in the first translation groove 344a inner supports separation member 34, its rotation axis is L4a, when For support column 35 when the second translation groove 344b inner supports separation member 34 rotates, its rotation axis is L4b, wherein rotation axis L4a It is parallel to each other with L4b；Preferably, the bottom plate 340 is circular slab, and rotation axis L4a and the rotation axis L4 of separation member 34 are total to Line.

To keep the rotation that support column 35 is stablized in the first translation groove 344a or the second translation groove 344b, and prevent from supporting Column 35 arbitrarily moves between the first translation groove 344a and the second translation groove 344b, and the separation assembly 300 further includes at least one A leap portion 345, it is as shown in Figure 10 B, described to be arranged on across portion 345 on the inner wall of translation groove 344, it is preferred that across portion 345 For from the projection that protrudes inwardly from of inner wall of translation groove 344, between the first translation groove 344a and the second translation groove 344b, and institute Stating across portion 345 has two, the two is oppositely arranged, therefore, as illustrated in figure 10 c, when from opposite with the direction of 343 projection of protruded stigma When separation member 34 is observed in direction, the first translation groove 344a and the second translation groove 344b are in " C " shape, the two has rotation respectively Center M and N, two leap portions 345 are overlying relation, and distance therebetween is h.Certainly, the leap portion 345 may be used also To be the projection formed from bottom plate 340, the projection is prominent in translation groove 344, it is preferred that its direction protruded and protruded stigma 343 directions protruded are identical；As long as the formation across portion 345 can keep support column 35 can be in the first translation groove 344a Or second rotation stablized in translation groove 344b.

As illustrated in figure 10 c, cam 341 is fixedly connected with bottom plate 340, it is preferred that cam 341 is integrally formed with bottom plate 340. The cam 341 includes the first arc portion 341a and the second arc portion 341b being connected with each other, wherein, the first arc portion 341a has at least A kind of radius, the constant-radius of the second arc portion 341b；When from the side with 343 projection of protruded stigma in the opposite direction from separation member 34 When, the pivot of the separation member 34 is O, when rotation axis L4a is conllinear with the rotation axis L4 of separation member 34, the rotation Turn center M and O to overlap；Using M as the center of circle, the maximum radius of the first arc portion 341a is r1, and the radius of the second arc portion 341b is R2, meets：R1 ＜ r2.

Continuing as illustrated in figure 10 c, two separations of the first arc portion 341a and the second arc portion 341b are respectively J and K, Preferably, the line JK of described two separation J and K is overlapping or parallel with the line MN of the pivot M and N, Ci Zhongshe In respect of the frictional force helped when reduction support column 35 moves between the first translation groove 344a and second translate groove 344b, ensure branch Dagger 35 smoothly moves.

Need to rotate to counting completion since counting in addition, the arc length of the first arc portion 341a depends on counting part 31 Angle, the two positive correlation, i.e., described counting part 31 completes to need rotating angle bigger to counting since counting, the first arc The arc length of portion 341a is longer.Since the arc length of the first arc portion 341a is with counting part 31 since counting to counting completion needs Rotating angle is related, and therefore, counting mechanism 30 need to ensure the first arc portion 341a and count part 31 positioned at a certain true in assembling Fixed position, to ensure that the position is unique, as shown in Fig. 7 A, Fig. 7 B, Fig. 9 A, Fig. 9 B and Figure 10 A, counts and is provided with part 31 Instruction unit 314 is positioned, positioning confirmation portion F11 corresponding with positioning instruction unit 314 is additionally provided with end cap F1, works as counting mechanism 30 complete assembling, can be by the positioning instruction unit 314 and positioning confirmation portion F11 come determines counting when finally assembling end cap F1 Whether the assembling of mechanism 30 meets the requirements；Meanwhile count part 31 outer circumference surface on be additionally provided with the first location division 313, It is additionally provided with the second location division 333 on the outer circumference surface of power reception part 33, during assembling, first location division 313 and second Location division 333 corresponds to, specifically, the first location division 313 is to be arranged on the notch counted on 31 outer circumference surface of part, the second location division 333 is are arranged on the notch on 33 outer circumference surface of power reception part, specifically, second location division 333 is to be arranged on gear Notch on 331 outer circumference surface of 330 outer circumference surface of body or teeth portion, thus, count opposite between part 31 and power reception part 33 Position relationship is uniquely confirmed；The combined hole 335 is "T"-shaped hole, correspondingly, the second engaged portion 342 is from bottom plate 340 The "T"-shaped projection of upper protrusion, when the second engaged portion 342 is combined with combined hole 335, position therebetween will be by unique true Fixed, separation member 34 will be rotated with the rotation of power reception part 33, thus, the phase between power reception part 33 and separation member 34 Position relationship is also uniquely confirmed, finally, the relative position relation between part 31 and separation member 34 is counted and is able to uniquely really Recognize.

[counting process]

Figure 11 C are that relative position of the separation assembly before counting with drive gear in counting mechanism of the present invention is closed System's figure；Figure 12 A be counting mechanism of the present invention be near completion count when and drive gear view；Figure 12 B It is the sectional view of the rotation axis cutting of the counting mechanism along Figure 12 A；Figure 12 C are the separation in counting mechanism of the present invention Component be near completion count when and drive gear relative position relation figure；Figure 13 A are that counting mechanism of the present invention exists After the completion of counting with the view of drive gear；Figure 13 B are the enlarged diagrams of part R1 in Figure 13 A；Figure 13 C are this edges The sectional view of the rotation axis cutting of counting mechanism in Figure 13 A；Figure 13 D are the enlarged diagrams of part R2 in Figure 13 C；Figure 13 E It is relative position relation figure of the separation assembly in counting mechanism of the present invention with drive gear after the completion of counting.

For become apparent from description counting mechanism 30 motion process of each component and counting mechanism 30 and drive gear 141 it Between position relationship, counting mechanism 30 and drive gear 141 are illustrate only in being described below, in figure.

Before counting mechanism 30 starts counting up, as seen in figs. 11a and 11b, the second gear 141b is nibbled with teeth portion 331 Close, contact site 141c is opposite with the first arc portion 341a of cam 341, but the two is not contacted；At this time, the rotation axis of separation member 34 L4 is the rotation axis L4a of the first translation groove 344a, the rotation of the rotation axis L1, power reception part 33 for counting part 31 Axis L3 is conllinear with the rotation axis L4a of separation member 34.

As shown in Figure 11 C, a diameter of d of support column 35, meets d ＞ h, thus, when being acted on from external force, support column 35 It will not be moved between the first translation groove 344a and the second translation groove 344b.Before counting mechanism 30 starts counting up, first arc Portion 341a is opposite with contact site 141c, but the two is not contacted, and at this time, the point nearest from contact site 141c of cam 341 is Q, cam The distance between pivot O and the closest approach Q of 341 pivot M, that is, separation member 34 are L_MQ, pivot M is with connecing The minimum distance of contact portion 141c is r5, in the embodiment of the present invention, the maximum radius r1 of the first arc portion 341a, the second arc portion The radius r2 and the r5 of 341b meets：R1 ＜ r5 ＜ r2, it is therefore, convex when the first arc portion 341a is opposite with contact site 141c Wheel 341 is not contacted with contact site 141c, when the second arc portion 341b is opposite with contact site 141c, cam 341 and contact site 141c Contact.

Counting mechanism 30 be near completion counting when, as shown in Figure 12 A, Figure 12 B and Figure 12 C, the second gear 141b with Teeth portion 331 still keeps engaging, and the second arc portion 341b of contact site 141c and cam 341 keeps opposite, but the two starts to contact；This When, the rotation axis L4 of separation member 34 is the rotation axis L4a of the first translation groove 344a, the rotation axis for counting part 31 L1, the rotation axis L3 of power reception part 33 are conllinear with the rotation axis L4a of separation member 34.

As indicated in fig. 12 c, the second arc portion 341b of cam 341 is opposite with contact site 141c, and support column 35 is still located on In one translation groove 344a, in theory, the second arc portion 341b and contact site 141c will form coincidence part U, due to described first Arc portion 341a is overlapping with the line MN of the pivot M and N with the line JK of two the separations J and K of the second arc portion 341b Or it is parallel, therefore, the pivot M and the line of the pivot S of drive gear 141 of the first translation groove 344a will pass through second The pivot N and the coincidence part U of groove 344b is translated, and cam 341 at this time is extruded be subject to contact site 141c, will be had The trend that direction shown in V is moved along in Figure 12 C.

As shown in Figure 13 A, Figure 13 B, Figure 13 C and Figure 13 D, opposite it can be moved with power reception part 33 due to counting part 31 It is dynamic, and count part 31 and stopped by end cap F1 immovable, therefore, counting mechanism 30 is completed after counting, and power reception part 33 is opposite Part 31 is counted to move to the direction away from drive gear 141, at this time, second gear 141b is disengaged from teeth portion 331, the two it Between form the first gap g1, and the rotation axis L1 for counting part 31 is not conllinear with the rotation axis L3 of power reception part 33, also It is to say, the rotation axis L1 for counting part 31 is not conllinear with the rotation axis L4a of the first translation groove 344a.

Counting mechanism 30 is completed after counting, and support column 35 is moved to the second translation groove 344b from the first translation groove 344a, because This, the rotation axis L4 of the separation member 34 is conllinear with the rotation axis L4b of the second translation groove 344b, the rotation axis L4a It is not conllinear with rotation axis L4b, and there is therebetween the second gap g2 (as shown in Figure 13 B and Figure 13 D), thus, counting machine Structure 30 is completed after counting, and the rotation axis L1 for counting part 31 is not conllinear with the rotation axis L4 of separation member 34.

As shown in figure 13e, counting mechanism 30 is completed after counting, and the support column 35 is crossed across portion 345, from the first translation Groove 344a is moved to the second translation groove 344b, and at this time, the pivot of separation member 34 is in the rotation of the second translation groove 344b Heart N.Since support column 35 is fixed on housing, thus, support column 35 does not become with respect to the position of drive gear 141 Change, but separation member 34 is changed with respect to the position of drive gear 141, specifically, the pivot of separation member 34 is by first The pivot M of translation groove 344a is moved to the pivot N of the second translation groove 344b.

Continuing as shown in figure 13e, counting mechanism 30 is completed after counting, and closest approach of the cam 341 from contact site 141c is T, The distance between pivot N and closest approach T of separation member 34 at this time are L_NT, the L_MQWith L_NTMeet：L_MQ＞ L_N.Branch The diameter d of dagger 35 is more than described two spacing h across between portion 345, therefore, when support column 35 translates groove 344a from first After being moved to the second translation groove 344b, in the case where no external force acts on, support column 35 will be limited in the second translation groove In 344b, without returning the first translation groove 344a, the position of separation member 34 is also just supported column 35 and fixes holding, and then, The position of the power reception part 33 combined with separation member 34 is also just fixed to keep, the teeth portion 331 on the power reception part 33 with Position between second gear 141b is also fixed and held.

In the embodiment of the present invention, engaged to ensure that the second gear 141b is completely disengaged with teeth portion 331, between described first The distance that gap g1 and the support column 35 move, i.e., the first translation groove 344a pivots M and the second translation groove 344b rotate The distance between center N L_MNMeet：L_MN＞ g1.

As described above, counting mechanism 30 of the present invention has the after the completion of first position and counting before counting Two positions, in first position, the counting part 31 is coaxial with separation member 34；In the second place, the counting part 31 and separation member 34 is not coaxial, i.e., at first position, the rotation axis L1 of counting part 31 is conllinear with the rotation axis L4 of separation member 34, second During position, the rotation axis L1 for counting part 31 is not conllinear with the rotation axis L4 of separation member 34.Specifically, at first position, Support column 35 is in the first translation groove 344a, and at the second place, supporting pillar 35 is in the second translation groove 344b, due to flat Move in groove 344 and be provided with across portion 345, therefore, crossed when support column 35 from the first translation groove 344a across portion 345 and be moved to the After two translation groove 344b, in the case where not being subject to external force to act on, support column 35 would be held in the second translation groove 344b；Together When, the distance between the first translation groove 344a pivots M and the second translation groove 344b pivots N L_MNMeet：L_MN＞ G1, thus, second gear 141b can be completely disengaged with teeth portion 331, even if Delevoping cartridge P receives external impacts, since power connects Addressee 33 is supported column 35 by separation member 34 and fixes holding, therefore, teeth portion 331 and second gear on power reception part 33 Gap g1 between 141b is also able to fixed holding, and the teeth portion 331 and the risk of breakage of second gear 141b are eliminated.

Claims (6)

1. a kind of Delevoping cartridge, including housing, the counting mechanism for being arranged on housing longitudinal end, the counting mechanism includes counting Part, middleware, power reception part and separation assembly, the counting part and power reception part are combined with middleware, separation group Part is combined with power reception part and housing respectively；

The separation assembly includes the separation member and translation component that be combined with each other, translates component and is combined with housing, separation member is with moving Power receiving element combines；

The separation member includes bottom plate and the cam combined respectively with two sides of bottom plate and the second engaged portion, and described Two engaged portions are combined with power reception part；

The translation component includes the translation groove and supporting item be combineding with each other, and translation groove is located at one of them of separation member and housing On, supporting item be located at separation member and housing another on；

The translation groove includes the first translation groove being interconnected and the second translation groove, the two has pivot M and N respectively；

The cam includes the first arc portion and the second arc portion being connected with each other, wherein, the first arc portion has at least one radius, the The constant-radius of two arc portions；

It is characterized in that, in the line JK and described two rotations of two separations J and K of first arc portion and the second arc portion Heart M is overlapping or parallel with the line MN of N.

2. a kind of Delevoping cartridge according to claim 1, it is characterised in that the Delevoping cartridge further includes and power reception part knot The drive gear of conjunction, the drive gear include first gear, second gear and the contact site be combineding with each other, and first gear receives Driving force, second gear are combined with counting mechanism, the contact site and at least one combination in first gear and second gear.

3. a kind of Delevoping cartridge according to claim 2, it is characterised in that the cam is opposite with contact site.

4. a kind of Delevoping cartridge according to claim 3, it is characterised in that before counting, the first arc portion is opposite with contact site；Meter After the completion of number, the second arc portion is opposite with contact site.

5. a kind of Delevoping cartridge according to claim 4, it is characterised in that before counting, the pivot of separation member is with contacting The minimum distance in portion is r5, and the maximum radius of first arc portion is r1, and the maximum radius of the second arc portion is r2, is met：R1 ＜ R5 ＜ r2.

6. a kind of Delevoping cartridge according to claim 5, it is characterised in that second engaged portion is prominent from bottom plate "T"-shaped projection.