CN217543659U

CN217543659U - Selenium drum

Info

Publication number: CN217543659U
Application number: CN202220576634.1U
Authority: CN
Inventors: 龚晓剑; 李宏早; 黄超
Original assignee: Shenzhen Huinengda Computer Products Co ltd
Current assignee: Shenzhen Huinengda Computer Products Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-10-04
Anticipated expiration: 2032-03-16

Abstract

The application provides a toner cartridge, which comprises a sleeve and a magnetic core, wherein the cross section of the sleeve is circular in outline for convenient installation and production, and an inner hole is formed in the sleeve; the magnetic core sets up in the hole including being cylindrical core, makes the axis of magnetic core and the axis parallel of hole and interval setting, adjusts the interval of the position that magnetic pole on the magnetic core and sleeve correspond for the magnetic force value of adjustment sleeve surface need not to change material or incremental cost, can realize sleeve surface magnetic force value's regulation, has saved the cost. When the magnetic force value on the surface of the sleeve is higher, the position of the magnetic core corresponding to the sleeve is arranged to be close to the sleeve, so that the distance between the magnetic core and the sleeve is reduced; when the magnetic force value on the surface of the sleeve is lower, the position of the magnetic core corresponding to the sleeve is deviated from the sleeve, so that the distance between the magnetic core and the sleeve is increased.

Description

Selenium drum

Technical Field

The application belongs to the technical field of printers, and particularly relates to a toner cartridge.

Background

Magnetic force is telescopic surface to the position that carbon powder and other functional device produced the effect, and the quality of selenium drum and the good and bad of printing effect have been decided to telescopic surface magnetic force's height, and each magnetic pole magnetic force height of telescopic surface has the difference, generally relies on the difference of each magnetic pole magnetic force of magnetic core to realize. In the related art, the magnetic force value on the outer surface of the sleeve is usually adjusted by using a raw material with a larger diameter of the magnetic core or better use performance, which results in an excessively high cost of the selenium drum, so that the prior art cannot ensure that the magnetic force value on the outer surface of the sleeve is adjusted at a lower cost.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a selenium drum and printer to solve the problem that the selenium drum that exists can't realize the adjustment to the magnetic force value of sleeve surface under lower cost among the prior art.

In order to achieve the above object, the present application adopts a technical solution that is a toner cartridge, comprising: the cross section of the sleeve is circular, and an inner hole is formed in the sleeve; and

the magnetic core, magnetic core are including being cylindrical core, and the hole is arranged in to the core, and the axis of core and the axis of hole are parallel and the interval sets up to the magnetic force value of adjustment sleeve surface.

Optionally, one end of the sleeve is provided with a transmission head;

the magnetic core still includes first connector, and first connector is located the one end of magnetic core, and the axis of first connector is parallel and the interval setting with the axis of core, and first connector rotates with the transmission head to be connected and coaxial.

Optionally, the magnetic core further comprises:

the second connector is positioned at one end of the core body, which is far away from the first connector, the second connector is coaxial with the first connector, and the second connector extends out of the inner hole.

Optionally, a groove is formed in the end face, facing the inner hole, of the transmission head, and the first connecting head is rotatably connected in the groove.

Optionally, the outer diameter of the core is 9-10mm; the aperture of the inner hole is 10-12mm.

Optionally, the outer diameter of the core body is 9.8mm, and the aperture of the inner hole is 11mm; the distance between the axis of the core and the axis of the inner hole is greater than 0mm and less than or equal to 0.3mm.

Optionally, the magnetic core comprises:

at least two magnetic stripes, along circumference interconnect formation hollow magnetic core, the magnetic stripe has at least one magnetic pole, and the local thickness that the magnetic stripe corresponds the magnetic pole is confirmed according to the magnetic force value of magnetic pole.

Optionally, the magnetic core comprises: the magnetic strips are provided with one magnetic pole or two magnetic poles with different magnetism.

Optionally, the core is an integrally formed member.

Optionally, the method further comprises: the casing, the inside of casing is formed with and holds the chamber, and the sleeve sets up in holding the intracavity to rotate and connect in the casing, the second connector fixed connection of magnetic core in the casing.

The application provides a selenium drum's beneficial effect lies in:

the selenium drum comprises a sleeve and a magnetic core, and is convenient to mount and produce, the cross section of the sleeve is circular, and an inner hole is formed in the sleeve; the magnetic core sets up in the hole including being cylindrical core for the axis of magnetic core and the axis parallel and the interval setting of hole, the interval of the position that magnetic pole and sleeve correspond on the regulation magnetic core for the magnetic force value of adjustment sleeve surface need not to change the material or increase cost, can realize sleeve surface magnetic force value's regulation, has saved the cost. Correspondingly, when the magnetic force value of the surface of the sleeve is high, the position of the magnetic core corresponding to the sleeve (namely the whole magnetic core) can be arranged close to the sleeve, namely, the gap between the sleeve and the position corresponding to the magnetic core is shortened; when the magnetic force value of the sleeve surface is lower, the position of the magnetic core corresponding to the sleeve (namely the whole magnetic core) can be set to be deviated from the sleeve, namely, the gap between the sleeve and the position corresponding to the magnetic core is enlarged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a cartridge provided in a first embodiment;

FIG. 2 is a cross-sectional view of the magnetic core and sleeve of FIG. 1;

fig. 3 is a schematic structural view of a toner cartridge provided in a second embodiment.

Wherein, in the figures, the various reference numbers:

10. a sleeve; 11. an inner bore; 113. a first protrusion; 114. a second protrusion; 12. a drive head; 121. a groove; 123. a third protrusion; 124. a fourth protrusion; 20. a magnetic core; 200. a core body; 21. a first connection head; 22. a second connector; 110. a first magnetic stripe; 120. a second magnetic stripe; 3. a housing; 30. an accommodating chamber; 111. a first stage; a1A2, a first thickness.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The cartridge provided in the embodiments of the present application will now be described.

It can be seen that the sleeve 10 of the toner cartridge of a typical printer is responsible for drawing toner out of the toner hopper and rubbing the toner to charge the toner. The quality of the carbon powder adsorption layer on the surface of the sleeve 10 directly influences the quality of the printing effect, and the carbon powder adsorption amount on the surface of the sleeve 10 can be determined by the magnetic force value on the surface of the sleeve 10.

As shown in fig. 1 and fig. 3, fig. 1 is a schematic structural diagram of the cartridge provided in the first embodiment (in the case that the core is an integrally molded component), and fig. 3 is a schematic structural diagram of the cartridge provided in the second embodiment (in the case that the core includes at least two magnetic strips). The application provides a selenium drum includes: a sleeve 10 and a magnetic core 20. Wherein the cross-sectional profile of the sleeve 10 is circular and an inner bore 11 is formed inside the sleeve 10. It will be appreciated that the cross-sectional profile of the bore 11 is circular for ease of manufacture. Preferably, the cross-section of the sleeve 10 is of a standard circular shape with both the inner and outer contours.

The magnetic core 20 includes a core 200 having a cylindrical shape (i.e., the cross-sectional profile of the core 200 is circular). In particular, the length of the core 200 may be much greater than its diameter. In the working state, the core 200 may be in a flat state, i.e., the length direction of the core 200 may be parallel to the horizontal plane. The core 200 is arranged in the inner hole 11, the axis of the core 200 is parallel to the axis of the inner hole 11 and is arranged at intervals (namely, the axis of the core 200 and the axis of the inner hole 11 have a certain distance, namely, the core 200 and the inner hole 11 are arranged eccentrically), and the magnetic force value of the outer surface of the sleeve 10 can be increased or decreased by adjusting the distance between the axis of the core 200 and the axis of the inner hole 11, namely, the axis of the core 200 is arranged towards the position on the sleeve 10, which needs to increase the magnetic force value, in a close manner (namely, the distance between the position on the outer side of the sleeve 10, which needs to increase the magnetic force value, and the corresponding position on the core 200 is shortened);

or the axis of the core 200 is far away from the position of the sleeve 10 where the magnetic force value needs to be lifted (i.e. the distance between the position of the sleeve 10 where the magnetic force needs to be lifted and the corresponding position on the core 200 is increased), so that the magnetic force at different positions outside the sleeve 10 is in a required state, the magnetic force value of the outer surface of the sleeve 10 of the selenium drum is adjusted in a simple and economical way, and no material needs to be added or changed.

Optionally, the sleeve 10 is made of aluminum or other metals or alloys, which is beneficial to the surface of the sleeve 10 to adsorb carbon powder.

Optionally, with continuing reference to fig. 1, fig. 1 is a schematic structural diagram of a cartridge according to a first embodiment of the present application, and a driving head 12 is disposed at one end of a sleeve 10.

The core 20 further includes a first connecting head 21, the first connecting head 21 is located at either end of the core 200, the axis of the first connecting head 21 is parallel to and spaced from the axis of the core 200, and the first connecting head 21 is rotatably connected and coaxial with the transmission head 12 (i.e. the sleeve 10 and the core 200 are relatively rotatable). That is, the first connector 21 and the transmission head 12 are coaxially disposed, the first connector 21 drives the core 200 to rotate synchronously, but the core 200 is eccentric to the sleeve 10 during the rotation process (i.e. the connection line of the first connector 21 and the second connector 22 can be regarded as the central axis of the sleeve 10, but the connection line of the first connector 21 and the second connector 22 and the central axis of the core 200 are parallel to each other and disposed at an interval). Specifically, the first connection joint 21 may be fixedly connected to one end of the core 200 by welding, bonding, or the like, so as to ensure the connection strength of the two; the first connector 21 may also be fixedly connected to one end of the magnetic core 20 by a fastener, a screw, or the like, so as to facilitate the assembly and disassembly of the two.

Because the axis of the first connecting head 21 deviates from the axis of the core 200 and the sleeve 10 is sleeved outside the core 200, the sleeve 10 can be kept in a non-eccentric state under the condition that the rotating shaft of the sleeve 10 and the axis of the sleeve 10 are positioned on the same straight line; and the axis of the sleeve 10 can be positioned on the same straight line with the axis of the first connecting head 21, so that the sleeve 10 can be ensured to rotate by taking the axis of the first connecting head 21 as an axis. Therefore, the portion of the core 200 close to the sleeve 10 is always kept close to the sleeve 10, and the portion of the core 200 far from the sleeve 10 is always kept far from the sleeve 10, so that the relative positional relationship between the core 200 and the sleeve 10 is kept fixed in the operating state.

Optionally, the magnetic core 20 further includes a second connector 22, the second connector 22 is located at an end of the core 200 away from the first connector 21, the second connector 22 is coaxial with the first connector 21, and the second connector 22 protrudes out of the inner hole 11 (at the end of the sleeve 10).

Specifically, the second connector 22 may be fixedly connected to the other end of the core 200 by welding, bonding, or the like, so as to ensure the connection strength of the two; the second connector 22 may also be fixedly connected to the other end of the core 200 by a snap, a screw, or the like, so as to facilitate the assembly and disassembly of the two. The second connector 22 and the first connector 21 support the core 200 together, so that the core 200 and the sleeve 10 are connected together with a fixing member (specifically, an inner wall of the accommodating cavity 30 of the housing 3 in the following technical solution), and at the same time, the core 200 and the sleeve 10 realize eccentric rotation.

Optionally, the end surface of the driving head 12 facing the inner hole 11 is provided with a groove 121, and the first connecting head 21 is rotatably connected in the groove 121, so that the first connecting head 21 and the sleeve 10 are connected together.

Optionally, the outer diameter of the core 200 is 9-10mm; the aperture of the inner hole 11 is 10-12mm. That is, a gap for allowing the core body 200 to freely rotate may be provided between the inner wall of the inner hole 11 of the sleeve 10 and the outer wall of the magnetic core 20.

Alternatively, the core 200 may have an outer diameter of 9mm, in which case the inner bore 11 of the sleeve 10 may have a value between 10-12mm, including 10mm and 12mm.

Alternatively, the core 200 has an outer diameter of 10mm, where the inner bore 11 of the sleeve 10 is 10-12mm, but the inner bore 11 of the sleeve 10 does not comprise 10mm.

Alternatively, the bore diameter of the inner bore 11 is 10mm, in which case the outer diameter of the core 200 is 9-10mm, but not including 10mm.

Optionally, the bore diameter of the inner bore 11 is 12mm, and the outer diameter of the core 200 is 9-10mm, inclusive of 10mm, but not inclusive of 12mm.

Optionally, the outer diameter of the core 200 is 9.8mm, and the bore diameter of the inner bore 11 is 11mm; the distance between the axis of the core 200 and the axis of the inner bore 11 is greater than 0mm and less than or equal to 0.3mm.

It will be appreciated that there is a gap between the sleeve 10 and the core 200; the axis of the sleeve 10 is offset from the axis of the core 200. Because the core 200 is cylindrical, the sleeve 10 is cylindrical, and the axis of the sleeve 10 deviates from the axis of the core 200, a gap between a part of the sleeve 10 and the core 200 is large, and a gap between the other part of the sleeve 10 and the core 200 is small, by adjusting the part of the sleeve 10 and the gap between the core 200, the distance between the core 200 and the sleeve 10 at the position outside the sleeve 10 where the magnetic force needs to be increased can be shortened or shortened, so that the magnetic forces at different positions outside the sleeve 10 are in a required state, and the printing quality of the selenium drum is improved by a simple and economical method.

Optionally, the core 200 is of a standard circular cross-section.

Optionally, the cross-section of the core 200 is irregularly circular.

In the present embodiment, please refer to fig. 1, the core 200 is an integrally formed component, and optionally, the magnetic core 20 includes an entire core 200; alternatively, the magnetic core 20 is a one-piece, non-removable member made up of a plurality of magnetic strips.

Optionally, the core 200 has one magnetic pole or two magnetically dissimilar magnetic poles thereon.

As shown in fig. 3, it shows a schematic three-dimensional structure diagram of a second embodiment of the cartridge of the present invention. The second embodiment has the following differences compared with the first embodiment.

In the embodiment of the present application, the magnetic core 20 includes: at least two magnetic strips (it is understood that the magnetic core 20 may also include two magnetic strips, or the magnetic core 20 includes three or more than three magnetic strips), at least two magnetic strips are connected to each other along the circumferential direction to form the hollow core 200, and the cross-sectional outer contour of the hollow core 200 is circular (in the prior art, the outer contour of the magnetic core is generally cylindrical, so as to facilitate manufacturing and molding and facilitate installation) so as to adapt to the structure of the sleeve 10 in the prior art. Each magnetic stripe is provided with at least one magnetic pole, and the thickness of the part of the magnetic stripe corresponding to the magnetic pole is adjusted according to the magnetic force value of the magnetic pole.

Alternatively, the developing core 100 includes two magnetic strips, each magnetic strip having one magnetic pole or having two magnetic poles different in magnetism. Alternatively, the respective two magnetic poles on the two magnetic strips can be arranged randomly.

Optionally, the two magnetic strips are a first magnetic strip 110 and a second magnetic strip 120, respectively, the first magnetic strip 110 includes a first connecting portion, the second magnetic strip 120 includes a second connecting portion, and the first connecting portion and the second connecting portion are fixedly connected so that the first magnetic strip 110 and the second magnetic strip 120 form the hollow core 200.

Alternatively, the first magnetic stripe 110 and the second magnetic stripe 120 have one magnetic pole or two magnetic poles with different magnetism, that is, the first magnetic stripe 110 may have one magnetic pole (not limited to S pole or N pole) and the second magnetic stripe 120 may have two magnetic poles with different magnetism.

Optionally, the first magnetic stripe 110 and the second magnetic stripe 120 each have a magnetic pole thereon.

Optionally, the first magnetic stripe 110 and the second magnetic stripe 120 each have two magnetic poles with different magnetism.

Optionally, the first magnetic stripe 110 has two magnetic poles with different magnetism, and the second magnetic stripe 120 has one magnetic pole.

Optionally, the first magnetic stripe 110 and the second magnetic stripe 120 may be fixedly connected by bonding, welding, or the like, so as to ensure the connection strength of the two.

Optionally, the first magnetic stripe 110 and the second magnetic stripe 120 may also be fixedly connected by a structure such as a buckle or a screw, so as to ensure that the two are convenient to disassemble and assemble. Of course, the first magnetic stripe 110 and the second magnetic stripe 120 can be fixedly connected in a magnetic attraction manner, so as to ensure a simple overall structure. The first magnetic stripe 110 and the second magnetic stripe 120 together form a hollow structure.

As shown in fig. 3, the first connection portion includes a first protrusion 113 and a second protrusion 114, and the first protrusion 113 and the second protrusion 114 together form a protruding structure; the second connecting part comprises a third protrusion 123 and a fourth protrusion 124, and the third protrusion 123 and the fourth protrusion 124 together form a concave structure; the protruding structure is inserted into the recessed structure such that the first magnetic strip 110 and the second magnetic strip 120 form a hollow core 200.

Alternatively, the protruding structure and the recessed structure are in transition fit or interference fit, and only the first magnetic stripe 110 and the second magnetic stripe 120 need to be connected and fixed together.

Optionally, the cartridge further includes a housing 3, a containing cavity 30 is formed inside the housing 3, the sleeve 10 is disposed in the containing cavity 30 and rotatably connected to the housing 3, the magnetic core 20 is fixedly connected to the housing 3, and specifically, the second connector 22 of the magnetic core is fixedly disposed on the inner wall of the containing cavity 30.

Specifically, the housing 3 may be of a plastic structure, and the accommodating cavity 30 inside the housing 3 may be provided in a cylindrical shape, that is, the length and the width of the accommodating cavity 30 are both much smaller than the height (for example, the length and the width of the accommodating cavity 30 may be approximately the same).

In the working state, the cylindrical receiving cavity 30 can be in a lying state, i.e. the height direction of the receiving cavity 30 is parallel to the horizontal plane. In particular, the housing 3 may be of plastic construction. The housing 3 formed of plastic has advantages of low cost and easy production, and does not adversely affect the operation of the magnetic core 20 since the plastic structure does not have magnetism. Alternatively, the receiving cavity 30 may have a shape corresponding to the shape of the sleeve 10, and may have a size different from the size of the sleeve.

In the present embodiment, it is understood that the developing core is first decomposed into a plurality of single magnetic stripes (the first magnetic stripe 110 and the second magnetic stripe 120, but not limited to the first magnetic stripe 110 and the second magnetic stripe 120)), and magnetic force control is performed on each single magnetic stripe (the first magnetic stripe 110 and the second magnetic stripe 120, but not limited to the first magnetic stripe 110 and the second magnetic stripe 120)). Namely, at the position where the magnetic force is required to be high, the thickness of the position (namely, the section thickness corresponding to the magnetic pole on the magnetic strip) is increased; at the position where the magnetic force is needed to be low, the thickness of the position (namely the thickness of the cross section corresponding to the magnetic poles on the magnetic strip) is reduced, the magnetic pole value of each single magnetic strip can be adjusted, and meanwhile, the material cost is saved, so that the magnetic force value of each single magnetic strip is controlled to achieve the optimal saturation orientation.

In order to maintain the cylindrical configuration of the magnetic core (i.e. the circular outer contour cross section of the magnetic core), the thickness adjustment of the magnetic pole position can optionally only be reduced or increased in thickness in the direction of the cross-sectional inner contour of the hollow core 200, i.e. the cross-sectional inner contour of the hollow core 200 is raised or recessed by a predetermined distance. Compared with the conventional magnetic core integrally formed, the thickness of the original magnetic core cannot be adjusted, and further, the magnetic pole orientation corresponding to each magnetic pole cannot be precisely controlled to realize the optimal saturation orientation. A plurality of monomer magnetic stripes separately the shaping, reduced the mutual interference between each monomer magnetic stripe, further promoted the extreme condition of magnetic pole saturation orientation, reached the accurate control to magnetic core 20.

In the using process, the magnetic poles of the single magnetic strips are subjected to saturation orientation, and then the magnetic force values on the sleeve 10 corresponding to the magnetic poles are adjusted by changing the positions of the magnetic poles and the distance between the inner walls of the sleeve 10. It can be understood that, in the technical solution described in the present application, the distance between the position of each magnetic pole and the inner wall of the sleeve 10 is changed, the magnetic force value of the magnetic core 20 is not affected, and the only change is the magnetic force value of the sleeve 10 sleeved on the outer surface of the magnetic core 20.

Specifically, as shown in fig. 3, optionally, the thickness of the first section 111 on the first magnetic stripe 110 is a first thickness A1A2, and the magnetic force of the first section 111 is adjusted to reach the saturation orientation and reach the desired magnetic force; it will be appreciated that the first segment 111 is herein oriented in saturation by increasing the thickness of the first thickness A1A2 so that its corresponding pole is oriented in saturation.

If it is desired to adjust the magnetic force at the position A3 on the sleeve 10 to obtain a larger magnetic force value, when the magnetic core 20 is mounted on the sleeve 10, the point A2 is arranged close to the point A3 along the connecting line of the points A3 and A1 (it can be understood that the magnetic core 20 is a finished product at this time, and the point A2 moves synchronously with the whole magnetic core 20), that is, when the magnetic core 20 is mounted in the inner hole 11, the distance between the points A2 and A3 is shortened as much as possible, that is, the central axis of the magnetic core 20 is arranged close to the point A3 along the connecting line of the points A3 and A1, so that the point A3 close to the sleeve 10 obtains a larger magnetic force value, and further adsorbs more toner, and obtains a better printing effect.

Correspondingly, if it is desired to adjust the magnetic force at the position A3 on the sleeve 10 to obtain a smaller magnetic force value, the magnetic core 20 may be mounted on the sleeve 10 such that the point A2 (it is understood that the magnetic core 20 is now the finished product, and the point A2 moves synchronously with the whole magnetic core 20) is located away from the point A3 along the connecting line of the points A3 and A1, that is, when the magnetic core 20 is mounted in the inner hole 11, the distance between the points A2A3 is increased as much as possible, that is, the central axis of the magnetic core 20 is located away from the point A3 along the connecting line of the points A3 and A1, so that the corresponding point A3 on the sleeve 10 obtains a smaller magnetic force value.

Compared with the first embodiment, the second embodiment has the same structure except that the above structure is different, and thus the description thereof is omitted.

When the magnetic core contains two at least magnetic stripes, the utility model provides a selenium drum has following advantage:

1. the magnetic force value of the surface of the sleeve is accurately controlled, so that the magnetic force value of the surface of the sleeve can be adjusted while the saturated orientation is realized;

2. saving material and reducing cost.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cartridge, comprising:

the cross section of the sleeve is circular, and an inner hole is formed in the sleeve;

the magnetic core, the magnetic core is including being cylindrical core, the core set up in the hole, the axis of core with the axis of hole is parallel and the interval sets up, in order to adjust the magnetic force value of sleeve surface.

2. The cartridge of claim 1,

one end of the sleeve is provided with a transmission head;

the magnetic core still includes first connector, first connector is located the one end of core, the axis of first connector with the axis of core is parallel and the interval sets up, first connector with the transmission head rotates to be connected and coaxial.

3. The cartridge as in claim 2, wherein said magnetic core further comprises:

the second connector is located the core is kept away from the one end of first connector, the second connector with first connector is coaxial, just the second connector stretch out in outside the hole.

4. The cartridge as claimed in claim 2, wherein the end surface of the driving head facing the inner hole is formed with a groove, and the first connector is rotatably coupled in the groove.

5. The cartridge of claim 1, wherein the core has an outer diameter of 9-10mm; the aperture of the inner hole is 10-12mm.

6. The cartridge of claim 5, wherein the core has an outer diameter of 9.8mm and the bore has a diameter of 11mm; the distance between the axis of the core body and the axis of the inner hole is larger than 0mm and smaller than or equal to 0.3mm.

7. The cartridge of claim 1, wherein the magnetic core comprises:

the magnetic strip is provided with at least one magnetic pole, and the thickness of the part of the magnetic strip corresponding to the magnetic pole is determined according to the magnetic force value of the magnetic pole.

8. The cartridge as in claim 7, wherein the magnetic core comprises: the magnetic strips are provided with one magnetic pole or two magnetic poles with different magnetism.

9. The cartridge of claim 1, wherein the core is an integrally formed member.

10. The cartridge of any one of claims 1-9, wherein the cartridge further comprises: the casing, the inside of casing is formed with holds the chamber, the sleeve set up in hold the intracavity, and rotate connect in the casing, magnetic core fixed connection in the casing.