CN218273350U - Touch control pen - Google Patents

Abstract

The utility model provides a touch-control pen, include: the pen comprises a pen holder, a connecting assembly and a pen point, wherein the pen point is connected with the pen holder through the connecting assembly, the pen point comprises a plurality of touch control surfaces, each touch control surface is located on different planes, the areas of the touch control surfaces are all consistent, the connecting assembly is configured to adjust the angle of the pen point, so that when the operating angles are different, the area of the pen point and the area of the touch control panel are consistent. The utility model provides a touch-control pen can guarantee that nib and touch panel's area of contact are stable, improves the smoothness nature of using.

Description

Touch control pen

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a touch-control pen.

Background

With the development of the capacitive screen, electronic products having a capacitive touch panel, such as tablet computers, mobile phones, and navigators, are increasing, and the touch pen is used to input instructions to the electronic device having the capacitive touch panel, so as to edit information on the touch panel.

The touch pen is attached to the capacitive touch panel, capacitance change induction is generated between the touch pen and the capacitive touch panel, touch operation is achieved, and the pen point of the touch pen is easy to wear, so that the touch pen usually adopts a hard pen point, but the hard pen point is difficult to meet the requirement of the contact area of the touch panel in the using process, the consistency of signal quantity is difficult to keep, the problem of broken touch is easy to occur, and the using effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a touch-control pen can guarantee that nib and touch panel's area of contact are stable, improves the smoothness nature of using.

In order to achieve the above object, the present invention provides a stylus pen, including:

a pen holder;

a connecting assembly;

the nib, the nib passes through coupling assembling connect in the pen-holder, the nib includes a plurality of touch-control faces, each the touch-control face is located different planes, and each the area of touch-control face is all unanimous, coupling assembling is configured to adjust the angle of nib to when the operating angle of difference, the area of nib and touch panel contact is unanimous.

The utility model provides a pair of touch-control pen, because the nib passes through coupling assembling to be connected in the pen-holder, the nib includes a plurality of touch-control faces, each the touch-control face is located different planes, and each the area of touch-control face is all unanimous, coupling assembling can adjust the angle of nib, therefore when the writing angle of difference uses, a plurality of touch-control faces switch each other and come into contact with touch panel, make the area of nib and touch panel contact unanimous, and area of contact is unlikely to too little, thereby ensure to obtain enough and stable electric signal quantity, guarantee the smoothness nature of touch-control operation.

In a possible implementation manner, the touch surface includes a touch plane and a plurality of touch slopes, wherein the touch plane is located at an end of the pen point facing away from the connecting assembly, the plurality of touch slopes are sequentially connected to an edge of the touch plane, and an area of each touch slope is consistent with an area of the touch plane.

In a possible implementation manner, the pen head is polyhedral, and the touch plane and the touch inclined plane are both polygonal.

In one possible embodiment, the nib is a conductive plastic part.

In a possible implementation manner, the connection assembly includes a connection member and an adjustment member, the connection member is connected to the pen holder, the adjustment member is connected to the connection member, and the adjustment member is connected to the pen point.

In a possible implementation manner, the adjusting piece comprises a flexible rod part, one end of the pen point facing the adjusting piece is provided with a connecting hole, and the flexible rod part is connected into the connecting hole.

In a possible implementation manner, the adjusting member further includes a main body portion, the main body portion is connected to an end of the flexible rod portion facing away from the pen point, a through hole is formed in the connecting member, and the main body portion is connected to the through hole.

In one possible embodiment, the flexible stem portion has an outer diameter smaller than an outer diameter of the body portion.

In a possible implementation manner, one end of the main body portion facing the pen point is a limiting end, a flange is arranged on the periphery of the limiting end, one end of the connecting piece facing the pen point abuts against the flange, and the pen point abuts against the limiting end.

In a possible implementation manner, at least one end of the pen holder is provided with a mounting hole, the connecting piece is connected into the mounting hole, the periphery of the connecting piece is provided with a protruding part, and the pen holder is abutted against the protruding part.

In the touch pen provided by the embodiment, the pen point is a conductive plastic pen point. Conductive plastic's material is harder, has better wearability, can promote the life of nib, and conductive plastic still has good self-lubricating performance, is favorable to reducing the frictional force that nib and touch panel contact were write, improves and writes and feels, is favorable to improving the smoothness nature that the touch-control pen used.

The touch control pen that this embodiment provided, simple structure, even because of individual use habit is different, the inclination of touch control pen is different during the operation, and the angle of nib also can be adjusted through coupling assembling to this embodiment for the area of nib and touch panel contact is unanimous, thereby provides stable, smooth touch operation effect, and the practicality is strong.

The touch pen provided by the embodiment has the advantages that the pen point is polyhedral, the flexible rod part is used for connecting the pen point, the contact area of the pen point and the touch panel can be kept unchanged when the touch pen is used for writing at multiple angles, the conductive quantity and the signal stability are greatly improved, and the touch effect is guaranteed.

In addition to the technical problems, technical features constituting technical aspects, and advantageous effects brought by the technical features of the technical aspects described above, other technical problems that can be solved by a stylus pen, other technical features included in the technical aspects, and advantageous effects brought by the technical features according to embodiments of the present invention will be described in further detail in specific embodiments.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a stylus of the related art having a soft tip;

FIG. 2 is a schematic structural diagram of a stylus tip of a related art being a hard tip;

FIG. 3 is a schematic diagram illustrating a structure of a stylus pen tip before compression in the related art;

FIG. 4 is a schematic diagram illustrating a compressed structure of a stylus tip according to the related art;

fig. 5 is a schematic structural diagram of a stylus according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a stylus provided in an embodiment of the present invention;

fig. 7 is an exploded schematic view of a stylus according to an embodiment of the present invention;

fig. 8 is a front view of a pen point of a stylus pen according to an embodiment of the present invention.

Description of reference numerals:

10-a pen holder;

11-mounting holes;

20-a connecting assembly;

21-a connector;

211-a boss;

22-an adjustment member;

221-a flexible rod portion;

222-a body portion;

223-a limiting end;

224-a flange;

30-pen point;

31-a touch surface;

311-touch plane;

312-touch slope;

32-connecting hole;

40-touch panel.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

When the area of the pen point of the touch pen is too small, the contact area between the pen point and the touch panel is too small, which results in insufficient conductive quantity, and thus smooth writing operation cannot be realized.

Referring to fig. 1 and 2, in the related art, the tip 30 of the stylus pen is generally tapered or circular, and the contact area between the tapered or circular tip 30 and the touch panel 40 is limited, which may affect the electrical conductivity. When the stylus pen is used, the pen head 30 contacts the capacitive touch panel 40 to input an instruction.

Referring to fig. 3 and 4, when the nib 30 is made of a soft conductive fiber cloth, even if the contact area of the soft conductive fiber nib 30 in contact with the touch panel 40 is very small, the contact area can be increased by the nib 30 being squeezed and deformed to increase the conductive amount and ensure the conductive amount required for touch, referring to fig. 3, which is a schematic structural diagram before the nib 30 of the touch pen in the related art is compressed, and fig. 4, which is a schematic structural diagram after the nib of the touch pen in the related art is compressed, it can be seen that the nib is squeezed and deformed to increase the contact area of the nib 30 and the touch panel 40, but the soft conductive fiber cloth has the disadvantage of poor friction resistance, and damages the conductive layer after long-time writing, and has a short service life, typically a lifetime of fifty kilometers.

When the pen point 30 is made of a hard conductive pen point 30, although the abrasion resistance can be improved, because the material is hard, the conductive pen point is basically not compressed and deformed when contacting with a capacitive screen, if a conical or circular pen point 30 is adopted, the contact area between the pen point 30 and the touch panel 40 is very small, the conductive quantity requirement of touch is often not met, the touch is easily broken during writing, and the smoothness of use is affected.

In view of the above background, the utility model provides a touch-control pen adopts the nib of stereoplasm, through improving for the nib includes a plurality of touch-control faces, can ensure the area of contact of nib, and, makes the touch-control pen when the angle of writing of difference uses through coupling assembling, can adjust the angle of nib, makes the nib unanimous with the area of screen contact, thereby ensures to obtain enough and stable electric signal quantity, guarantees the smoothness nature of touch-control operation.

The following describes a stylus pen provided by an embodiment of the present invention with reference to the drawings.

Referring to fig. 5 and 6, the present invention provides a stylus pen, including: the pen point 30 is connected to the pen holder 10 through the connecting assembly 20, the pen point 30 includes a plurality of touch surfaces 31, each touch surface 31 is located on a different plane, the areas of the touch surfaces 31 are the same, and the connecting assembly 20 is configured to adjust the angle of the pen point 30, so that the areas of the pen point 30 and the touch panel 40 are the same when the operation angles are different.

The utility model provides a pair of touch-control pen, because nib 30 passes through coupling assembling 20 and connects in pen-holder 10, nib 30 includes a plurality of touch-control faces 31, each touch-control face 31 is located the plane of difference, and the area of each touch-control face 31 is all unanimous, coupling assembling 20 can adjust the angle of nib 30, therefore when the writing angle of difference uses, a plurality of touch-control faces 31 switch each other and come into contact with touch panel 40, make the area of nib 30 and touch panel 40 contact unanimous, and area of contact is unlikely to too little, thereby ensure to obtain enough and stable electric signal quantity, guarantee the smoothness nature of touch-control operation.

In one possible embodiment, the shaft 10 is a conductive shaft, and may be a rod extending in a straight line.

The pen point 30 is a conductive pen point, when the pen point 30 of the touch pen is in contact with the touch panel 40 in use, the pen point 30 and the touch panel 40 generate capacitance change induction, so that touch operation is realized, and by maintaining the contact area between the pen point 30 and the touch panel 40 to be consistent, the capacitance value induced by the touch panel 40 can be maintained stable and unchanged, so that the use fluency can be improved, and the operation experience effect is improved.

The pen point 30 includes a plurality of touch surfaces 31, the planes of the touch surfaces 31 are all different, the front end of the pen point 30 includes a plurality of touch surfaces 31, and the edge of the pen point 30 also includes a plurality of touch surfaces 31, so that the outer surface and the front end of the pen point 30 are both touch surfaces 31, when the angle of use is changed, the touch surfaces 31 of different types are convenient to be switched with each other to be in contact with the touch panel 40, the use is smoother, the angle of holding the pen does not need to be adjusted, and the convenience of use is improved.

In one possible implementation, referring to fig. 7 and 8, the touch surface 31 includes a touch plane 311 and a plurality of touch slopes 312, wherein the touch plane 311 is located at an end of the pen head 30 facing away from the connecting component 20, the plurality of touch slopes 312 are sequentially connected to an edge of the touch plane 311, and an area of each touch slope 312 is equal to an area of the touch plane 311.

If the pen shaft 10 is used in a vertical state perpendicular to the touch panel 40, the touch plane 311 contacts the touch panel 40; if the pen shaft 10 is changed from the vertical state perpendicular to the touch panel 40 to the inclined state inclined to the touch panel 40, the surface of the pen head 30 contacting the touch panel 40 is switched from the touch plane 311 to the touch inclined plane 312; if the inclined direction of the pen shaft 10 is changed, the surface of the pen head 30 contacting the touch panel 40 is switched among the plurality of touch slopes 312, so that the conductive amount and the conductive stability can be ensured under the condition of multi-angle use, and smooth touch operation can be realized.

Since the area of the inclined touch surface 312 is the same as the area of the flat touch surface 311, when the device is used at different angles, the contact areas of the inclined touch surface 312 and the flat touch surface 311 are the same whether the inclined touch surface 312 contacts the touch panel 40 or the flat touch surface 311 contacts the touch panel 40, so that a continuous and stable electric signal is obtained.

In a possible implementation manner, the shapes of the touch plane 311 and the touch inclined plane 312 may be the same or different, and the plurality of touch inclined planes 312 are connected in sequence and surround the edge of the touch plane 311, and compared with the conventional point contact between the tapered or circular pen head 30 and the touch panel 40, the pen head 30 and the touch panel 40 in this embodiment are in surface contact, which can effectively increase the contact area of the pen head 30 and ensure sufficient conductive amount.

In a possible implementation manner, the number of the touch slopes 312 may be, for example, 3, 5, 6 or more, and is not limited in detail here on the premise of ensuring that there is a sufficient contact area.

In one possible embodiment, the pen head 30 has a polyhedral shape, and the touch plane 311 and the touch inclined plane 312 are both polygonal, so as to ensure that the pen head 30 has a fixed contact area when in use.

In a possible implementation manner, referring to fig. 7 and 8, the pen head 30 is in a shape of a regular dodecahedron, that is, five touch slopes 312 are connected to the edge of the touch plane 311, and the sides of two adjacent touch slopes 312 facing away from the touch plane 311 are also connected to the touch slopes 312, so that the area of the touch pen in contact with the touch panel 40 can be ensured to be consistent when the touch pen is used at a plurality of different tilt angles, each surface of the regular dodecahedron has a sufficiently large area and a fixed area, and the sufficient contact area of the pen head 30 can be ensured to ensure the amount of electric signals.

In other possible embodiments, the pen tip 30 may also be in the shape of a rhombus with twelve faces, and is flexibly selected according to the use requirement on the premise of ensuring a sufficient contact area.

In one possible embodiment, the tip 30 is a conductive plastic piece. Conductive plastic's material is harder, has better wearability, can promote the life of nib 30, and conductive plastic still has good self-lubricating performance, is favorable to reducing the frictional force that nib 30 and touch panel 40 contact and write, improves and writes and feels, is favorable to improving the smoothness nature that the touch-control pen used.

In the embodiment, although the pen point 30 is made of a hard material, and the area contacting the touch panel 40 cannot be increased by compressing and deforming the pen point 30 itself, since the pen point 30 includes a plurality of touch surfaces 31, each touch surface 31 can be completely attached to the touch panel 40, and the area of each touch surface 31 is sufficient to ensure the amount of electric conduction required for touch control.

In a possible implementation manner, the conductive plastic includes conductive Polycarbonate (PC), conductive Polyoxymethylene (POM), or conductive teflon, and the conductive teflon has better wear resistance and is beneficial to prolonging the service life by adding a plastic material formed by conductive powder.

In a possible embodiment, as shown in fig. 6 and 7, the connection assembly 20 comprises a connection member 21 and an adjustment member 22, the connection member 21 is connected with the pen shaft 10, the adjustment member 22 is connected with the connection member 21, and the adjustment member 22 is connected with the pen point 30. The connecting component 20 not only realizes the connecting function between the pen point 30 and the pen holder 10, but also enables the angle of the pen point 30 to be adjusted when the touch control pen is used at different angles, so that the contact area between the pen point 30 and the touch control panel 40 is consistent, and sufficient and stable electric signal quantity can be obtained.

In a possible embodiment, the adjusting member 22 comprises a flexible rod portion 221, the end of the nib 30 facing the adjusting member 22 is opened with a connecting hole 32, and the flexible rod portion 221 is connected to the connecting hole 32.

In one possible implementation, the flexible rod portion 221 and the connecting hole 32 may be connected by an adhesive, which may be glue, or the like. Of course, the flexible rod portion 221 and the connecting hole 32 may also be connected by tightening, so as to ensure the stability of the connection.

In one possible embodiment, the flexible rod portion 221 has a uniform outer diameter, which facilitates the insertion of the flexible rod portion 221 into the connection hole 32 for connection.

In a possible implementation manner, the adjusting element 22 includes but is not limited to a material such as silicon gel or rubber, so that the flexible rod portion 221 has strong flexibility and toughness, and generates elastic deformation and restoration through the flexible rod portion 221, thereby achieving a good writing effect, and in addition, the flexible rod portion 221 is also beneficial to relieving the pressure buffer between the pen point 30 and the touch panel 40, so as to improve the service life of the touch pen.

Due to the flexibility of the flexible rod portion 221, when the touch pen is used, even if the position of the pen point 30, which is initially contacted with the touch panel 40, is an edge between two adjacent touch surfaces 31, in the process of performing operations such as touching, pointing, scribing and the like, the pressure transmitted to the pen point 30 can elastically deform the flexible rod portion 221 to drive the pen point 30 to rapidly rotate to an angle at which one touch surface 31 is completely attached to the touch panel 40, and correct the position at which the pen point 30 is contacted with the touch panel 40 into an angle at which one touch surface 31 is completely attached to the touch panel 40, so that the contact areas of the pen point 30 and the touch panel 40 can be consistent when the operation angles are different, the operation directional limitation of the touch pen on use is eliminated, and the use is more flexible and convenient.

In a possible embodiment, as shown in fig. 6 and 7, the adjusting member 22 further comprises a main body 222, the main body 222 is connected to an end of the flexible shaft 221 facing away from the nib 30, a through hole is formed in the connecting member 21, and the main body 222 is connected to the through hole.

In one possible embodiment, the main body 222 may be extruded into the through hole to achieve a tight connection, or may be connected between the main body 222 and the inner wall of the through hole by an adhesive.

In one possible implementation, the main body portion 222 and the flexible rod portion 221 may be integrally formed as a single piece, which may help to improve the connection strength between the main body portion 222 and the flexible rod portion 221. Alternatively, a portion of the flexible shaft portion 221 may extend into the main body portion 222, so as to connect the flexible shaft portion 221 and the main body portion 222.

In one possible embodiment, the outer diameter of the flexible stem portion 221 is smaller than the outer diameter of the body portion 222. Such a structure is beneficial to the flexible rod part 221 to generate torsional deformation and tensile deformation, so that the angle of the pen point 30 can be conveniently adjusted, and the touch pen can be more flexibly and conveniently used.

In a possible embodiment, the end of the main body 222 facing the nib 30 is a limit end 223, the periphery of the limit end 223 is provided with a flange 224, the end of the connecting member 21 facing the nib 30 abuts against the flange 224, and the nib 30 abuts against the limit end 223. The flange 224 serves as a stop for the assembly of the connecting member 21 with the adjusting member 22. The pen point 30 is abutted with the limit end 223, so that force can be transmitted to the pen point 30 in the using process, the operations such as touching, pointing, scratching and the like can be performed conveniently, and the connection stability of the pen point 30 can be improved.

In a possible embodiment, at least one end of the barrel 10 is provided with a mounting hole 11, the connecting piece 21 is connected to the mounting hole 11, the periphery of the connecting piece 21 is provided with a convex part 211, and the barrel 10 is abutted to the convex part 211.

In a possible implementation manner, an inner thread is arranged on the inner wall of the mounting hole 11, an outer thread is arranged on the outer wall of the connecting piece 21, and the connecting piece 21 is connected into the mounting hole 11 in a screwing manner; the connecting member 21 may be connected to the mounting hole 11 by welding, adhesive bonding, or interference fit, so as to ensure that the connecting member 21 is stably connected without falling off.

In a possible embodiment, the protrusion 211 is disposed around the outer circumference of the connecting element 21, an annular groove is formed in the protrusion 211, and a rib is disposed on the outer circumference of the main body 222 and extends into the annular groove, which helps to improve the stability of the connection between the adjusting element 22 and the connecting element 21, ensure the tightness of the installation, and prevent the loosening.

In one possible implementation, the touch panel 40 is a capacitive touch panel, and may be a screen applied to a tablet computer, a mobile phone, a navigator, a conference display screen, and the like.

The touch control pen provided by the embodiment has a simple structure, and even if the touch control pen has different inclination angles due to different personal use habits and operation, the angle of the pen point 30 can be adjusted through the connecting assembly 20 in the embodiment, so that the area of the contact between the pen point 30 and the touch control panel 40 is consistent, a stable and smooth touch control operation effect is provided, and the touch control pen is high in practicability.

According to the touch pen provided by the embodiment, the pen point 30 is polyhedral, the flexible rod part 221 is used for connecting the pen point 30, the contact area between the pen point 30 and the touch panel 40 can be kept unchanged when writing at multiple angles, the stability of the electric conduction quantity and signals is greatly improved, and the touch effect is guaranteed.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, which are used to indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and therefore should not be construed as limiting the present invention.

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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A stylus, comprising:

a pen holder;

a connecting assembly;

the pen point, the nib pass through coupling assembling connect in the pen-holder, the nib includes a plurality of touch-control surfaces, each the touch-control surface is located different planes, and each the area of touch-control surface is all unanimous, coupling assembling is configured to adjust the angle of nib to when the operating angle of difference, the area of nib and touch panel contact is unanimous.

2. The stylus pen according to claim 1, wherein the touch surface comprises a touch plane and a plurality of touch slopes, wherein the touch plane is located at an end of the pen point facing away from the connecting assembly, the plurality of touch slopes are sequentially connected to an edge of the touch plane, and an area of each touch slope is consistent with an area of the touch plane.

3. The stylus of claim 2, wherein the tip is polyhedral, and the touch plane and the touch slope are both polygonal.

4. The stylus of claim 1, wherein the tip is a conductive plastic.

5. The stylus pen according to any one of claims 1 to 4, wherein the connecting assembly comprises a connecting member and an adjusting member, the connecting member is connected to the pen holder, the adjusting member is connected to the connecting member, and the adjusting member is connected to the pen point.

6. The stylus of claim 5, wherein the adjusting member comprises a flexible rod portion, a connection hole is formed at an end of the pen point facing the adjusting member, and the flexible rod portion is connected to the connection hole.

7. The stylus of claim 6, wherein the adjustment member further comprises a main body portion, the main body portion is connected to an end of the flexible rod portion facing away from the tip, a through hole is formed in the connecting member, and the main body portion is connected to the through hole.

8. The stylus of claim 7, wherein an outer diameter of the flexible shaft portion is smaller than an outer diameter of the main body portion.

9. The stylus according to claim 7, wherein an end of the main body facing the pen point is a limiting end, a flange is disposed on a periphery of the limiting end, an end of the connecting member facing the pen point abuts against the flange, and the pen point abuts against the limiting end.

10. The stylus of claim 5, wherein at least one end of the shaft has a mounting hole, the connector is connected to the mounting hole, and a protrusion is formed on an outer circumference of the connector, and the shaft abuts against the protrusion.

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