Capacitance pen with replaceable pen point

Abstract

The utility model relates to the technical field of capacitance pens, and discloses a capacitance pen with a replaceable pen point. The capacitance pen with the replaceable pen point comprises a pen holder, a limiting column is arranged in the front end of the pen holder, a bearing is fixedly installed at the front end of the pen holder, a limiting pipe is installed at the front end of the pen holder in a penetrating mode, a base is movably installed in the limiting pipe, and a spring is installed at the rear end of the base in a penetrating mode; a transmission pipe is installed in the bearing in a penetrating mode, a limiting cone is fixedly installed at the front end of the transmission pipe, a chuck is installed in the limiting cone in an embedded mode, backward force needs to be applied to the pen point after the pen point is inserted, the pen point drives the base to move backwards, the base extrudes the spring, and the spring is in a contraction state; after the pen point is clamped by the clamping head, the position of the base is limited by the pen point, the spring is kept in a contraction state, the base and the spring are kept in contact through elastic force generated when the spring is in the contraction state, and therefore the situation of touch breaking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitive pens, in particular to a capacitive pen with a replaceable nib. Background Art

[0002] A capacitive pen is an input tool used to operate mobile phones and tablets instead of fingers, avoiding the fatigue caused by long-term use of fingers. Moreover, when using a mobile phone or tablet for artistic creation such as drawing and modeling, a capacitive pen can effectively express the effects drawn by the user.

[0003] For the existing Chinese utility model patent with the reference publication number: CN216792858U, it discloses a capacitive pen with a detachable and replaceable nib, which includes a pen barrel, a pen core holder, a nib and a tip. One end of the pen barrel is provided with an internal thread. The pen core holder is installed inside the pen barrel, and a fixing part is provided at the end of the pen core holder away from the pen barrel. A sleeve that can be sleeved on the pen core holder is arranged inside the nib. The nib is also provided with an external thread that matches the internal thread for fixing the nib to the pen barrel. A slot hole communicating with the sleeve is arranged on the nib. A rod-shaped conductive part is arranged on the tip, and the rod-shaped conductive part can penetrate into the slot hole to be placed inside the sleeve and is connected to the fixing part of the pen core holder. Generally speaking, this capacitive pen with a detachable and replaceable nib can achieve rapid replacement of the nib.

[0004] For the existing capacitive pens, the nib is generally removed from inside the buckle by a plugging method. Since the front end of the nib is conical, it is very inconvenient to apply force to the nib during the removal process. Moreover, the plugging method is prone to the situation where the insertion depth of the nib is insufficient, resulting in the occurrence of disconnection. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a capacitive pen with a replaceable nib, which has the advantages of being convenient for replacing the nib and avoiding disconnection, and solves the above technical problems.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A capacitive pen with a replaceable nib, comprising: a pen barrel, a limiting post is arranged inside the front end of the pen barrel, a bearing is fixedly installed at the front end of the pen barrel, a limiting tube is inserted through the front end of the pen barrel, a base is movably installed inside the limiting tube, a spring is inserted through the rear end of the base, a transmission tube is inserted through the inside of the bearing, a limiting cone is fixedly installed at the front end of the transmission tube, a chuck is fitted inside the limiting cone, and a nib is inserted through the center of the limiting cone; the limiting post can limit the moving direction of the base.

[0009] As a preferred technical solution of the present utility model, an opening structure fitted with a bearing is provided at the front end of the pen barrel, and the limiting post is arranged at the center of the opening structure at the front end of the pen barrel; the pen barrel can limit the position of the bearing.

[0010] As a preferred technical solution of the present utility model, the bearings are fitted and installed at the front and rear ends of the inner cavity of the opening structure at the front end of the pen barrel. The front end of the limiting tube is a conical structure, and the angle is the same as that of the limiting cone; the bearings can facilitate the rotation of the transmission tube.

[0011] As a preferred technical solution of the present utility model, the axis of the limiting tube and the axis of the pen barrel are on the same horizontal line. A sliding connection is formed between the base and the limiting tube. The rear end of the base penetrates outside the limiting post, and a sliding connection is formed between the base and the limiting post; the limiting tube can limit the position of the chuck.

[0012] As a preferred technical solution of the present utility model, the rear end of the spring is fixedly connected to the pen barrel, the front end of the spring is fixedly connected to the base, and the transmission tube is rotationally connected to the pen barrel through the bearing; the spring can facilitate the base to keep in contact with the end of the pen tip.

[0013] As a preferred technical solution of the present utility model, the aperture of the opening at the front end of the limiting cone is the same as that of the pen tip. The inner wall of the limiting cone is provided with a groove structure perpendicular to the inner wall. The chuck is installed in a "X" shape in the cavity between the front end of the limiting tube and the limiting cone with the center of the limiting tube as the reference; the limiting cone can limit the position of the chuck.

[0014] As a preferred technical solution of the present utility model, an arc-shaped structure matching the cylindrical structure of the pen tip is provided at the front end of the inner wall of the chuck, and an arc-shaped structure matching the conical structure at the front end of the limiting tube is provided at the rear end of the inner wall of the chuck. A sliding connection is formed between the chuck and the limiting tube, and a threaded structure fitted with the groove on the inner wall of the limiting cone is provided on the outer side of the chuck; the chuck can clamp the pen tip.

[0015] Compared with the prior art, the present utility model provides a capacitive pen with a replaceable pen tip, having the following beneficial effects:

[0016] 1. In this utility model, through the setting of the chuck, the chuck is installed in the cavity between the front end of the limit tube and the limit cone in an "X" shape with the center of the limit tube as the reference. An arc-shaped structure matching the cylindrical structure of the pen tip is provided at the front end of the inner wall of the chuck, and an arc-shaped structure matching the tapered structure at the front end of the limit tube is provided at the rear end of the inner wall of the chuck. Moreover, a sliding connection is formed between the chuck and the limit tube. A threaded structure that fits into the groove on the inner wall of the limit cone is provided on the outside of the chuck. The position of the chuck is restricted by the limit tube. When the drive tube drives the limit cone to rotate, the limit cone will drive the chuck to move backward at the angle of the tapered structure at the front end of the limit tube, thereby loosening the pen tip. After replacing the pen tip, hold the pen tip against it, limit the end of the pen tip to keep in contact with the base, and tighten the drive tube to facilitate the chuck to clamp the pen tip. This method can facilitate the replacement of the pen tip.

[0017] 2. In this utility model, through the setting of the spring, the spring is fixedly installed at the rear side of the base. The rear end of the spring is fixedly connected to the pen barrel, and the front end of the spring is fixedly connected to the base. After the pen tip is inserted, a backward force needs to be applied to the pen tip to drive the base to move backward and make the base squeeze the spring, so that the spring is in a contracted state. After the chuck clamps the pen tip, the pen tip will limit the position of the base and keep the spring in a contracted state. The elastic force generated when the spring is in the contracted state is used to keep the base in contact with the spring, thereby avoiding the occurrence of disconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 is a schematic diagram of the base installation structure of this utility model;

[0020] Figure 3 is a schematic diagram of the limit cone installation structure of this utility model;

[0021] Figure 4 is a schematic diagram of the connection structure between the chuck and the limit tube of this utility model;

[0022] Among them: 1. Pen barrel; 11. Limit post; 12. Bearing; 13. Limit tube; 14. Base; 15. Spring; 16. Drive tube; 17. Limit cone; 18. Chuck; 19. Pen tip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the embodiments of this utility model in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate this utility model, but cannot be used to limit the scope of this utility model.

[0024] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, a capacitive pen with a replaceable pen tip includes: a pen barrel 1, a limiting column 11 is arranged inside the front end of the pen barrel 1, a bearing 12 is fixedly installed at the front end of the pen barrel 1, a limiting tube 13 is inserted and installed at the front end of the pen barrel 1, a base 14 is movably installed inside the limiting tube 13, a spring 15 is inserted and installed at the rear end of the base 14, a transmission tube 16 is inserted and installed inside the bearing 12, a limiting cone 17 is fixedly installed at the front end of the transmission tube 16, a chuck 18 is fitted and installed inside the limiting cone 17, and a pen tip 19 is inserted through the center of the limiting cone 17.

[0027] The front end of the pen barrel 1 is provided with an opening structure that fits with the bearing 12, and the limiting column 11 is arranged at the center of the opening structure at the front end of the pen barrel 1.

[0028] The bearing 12 is fitted and installed at the front and rear ends of the inner cavity of the opening structure at the front end of the pen barrel 1. The front end of the limiting tube 13 is a conical structure, and the angle is the same as that of the limiting cone 17.

[0029] The axis of the limiting tube 13 is on the same horizontal line as the axis of the pen barrel 1. A sliding connection is formed between the base 14 and the limiting tube 13. The rear end of the base 14 is inserted outside the limiting column 11, and a sliding connection is formed between the base 14 and the limiting column 11.

[0030] The rear end of the spring 15 is fixedly connected to the pen barrel 1, the front end of the spring 15 is fixedly connected to the base 14, and a rotational connection is formed between the transmission tube 16 and the pen barrel 1 through the bearing 12.

[0031] The aperture of the front end of the limiting cone 17 is the same as that of the pen tip 19. A groove structure perpendicular to the inner wall is provided on the inner wall of the limiting cone 17. The collet 18 is installed in a cavity between the front end of the limiting tube 13 and the limiting cone 17 in an "X" shape with the center of the limiting tube 13 as the reference.

[0032] An arc surface structure matching the cylindrical structure of the pen tip 19 is provided at the front end of the inner wall of the collet 18. An arc surface structure matching the conical structure at the front end of the limiting tube 13 is provided at the rear end of the inner wall of the collet 18. And a sliding connection is formed between the collet 18 and the limiting tube 13. A threaded structure fitted with the groove on the inner wall of the limiting cone 17 is provided on the outside of the collet 18.

[0033] Specifically, the pen barrel 1 can limit the position of the bearing 12, the limiting post 11 can limit the moving direction of the base 14, the bearing 12 can facilitate the rotation of the transmission tube 16, the limiting tube 13 can limit the position of the collet 18, the base 14 can contact the pen tip 19, the spring 15 can facilitate the base 14 and the end of the pen tip 19 to maintain a contact state, the transmission tube 16 can drive the limiting cone 17 to rotate, the limiting cone 17 can limit the position of the collet 18, the collet 18 can clamp the pen tip 19, and the pen tip 19 can facilitate the transmission of the pressure sensation.

[0034] During use, the collet 18 is installed in a cavity between the front end of the limiting tube 13 and the limiting cone 17 in an "X" shape with the center of the limiting tube 13 as the reference. An arc surface structure matching the cylindrical structure of the pen tip 19 is provided at the front end of the inner wall of the collet 18. An arc surface structure matching the conical structure at the front end of the limiting tube 13 is provided at the rear end of the inner wall of the collet 18. And a sliding connection is formed between the collet 18 and the limiting tube 13. A threaded structure fitted with the groove on the inner wall of the limiting cone 17 is provided on the outside of the collet 18. The position of the collet 18 is restricted by the limiting tube 13. When the transmission tube 16 drives the limiting cone 17 to rotate, the limiting cone 17 will drive the collet 18 to move backward at an angle of the conical structure at the front end of the limiting tube 13, so as to loosen the pen tip 19. After replacing the pen tip 19, hold the pen tip 19, restrict the end of the pen tip 19 to keep in contact with the base 14, and tighten the transmission tube 16 to facilitate the collet 18 to clamp the pen tip 19. This method can facilitate the replacement of the pen tip 19. The spring 15 is fixedly installed at the rear side of the base 14. The rear end of the spring 15 is fixedly connected to the pen barrel 1, and the front end of the spring 15 is fixedly connected to the base 14. After the pen tip 19 is inserted, a backward force needs to be applied to the pen tip 19 to drive the base 14 to move backward and make the base 14 compress the spring 15, so that the spring 15 is in a contracted state. After the collet 18 clamps the pen tip 19, the pen tip 19 will restrict the position of the base 14 and keep the spring 15 in a contracted state. The elastic force generated by the spring 15 in the contracted state is used to keep the base 14 in contact with the spring 15, so as to avoid the occurrence of disconnection.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A capacitive stylus with a replaceable pen tip, characterized in that: include: A pen holder (1), wherein a limiting column (11) is arranged inside the front end of the pen holder (1), a bearing (12) is fixedly installed at the front end of the pen holder (1), a limiting tube (13) is inserted and installed at the front end of the pen holder (1), a base (14) is movably installed inside the limiting tube (13), a spring (15) is inserted and installed at the rear end of the base (14), a transmission tube (16) is inserted and installed inside the bearing (12), a limiting cone (17) is fixedly installed at the front end of the transmission tube (16), a chuck (18) is embedded and installed inside the limiting cone (17), and a pen head (19) is inserted and installed at the center of the limiting cone (17).

2. The capacitive stylus pen with replaceable pen tip according to claim 1, characterized in that: The front end of the pen shaft (1) is provided with an open hole structure engaged with the bearing (12), and the limiting column (11) is arranged at the center of the open hole structure at the front end of the pen shaft (1).

3. The capacitive stylus pen with replaceable pen tip according to claim 1, characterized in that: The bearing (12) is mounted in a recessed manner at the front and rear ends of the inner cavity of the opening structure at the front end of the pen holder (1); the front end of the limiting tube (13) is a conical structure, and the angle is consistent with the angle of the limiting cone (17).

4. The capacitive stylus pen with replaceable pen tip according to claim 1, characterized in that: The axis of the limiting tube (13) is on the same horizontal line as the axis of the pen holder (1); a sliding connection is formed between the base (14) and the limiting tube (13); the rear end of the base (14) is inserted into the outer side of the limiting column (11); and a sliding connection is formed between the base (14) and the limiting column (11).

5. The capacitive stylus pen with replaceable pen tip according to claim 1, characterized in that: The rear end of the spring (15) is fixedly connected to the pen holder (1), the front end of the spring (15) is fixedly connected to the base (14), and the transmission tube (16) is rotatably connected to the pen holder (1) via a bearing (12).

6. The capacitive stylus pen with a replaceable pen tip according to claim 1, characterized in that: The aperture of the front end opening of the limiting cone (17) is consistent with that of the pen tip (19); the inner wall of the limiting cone (17) is provided with a groove structure perpendicular to the inner wall; the chuck (18) is installed in an "X" shape in the cavity between the front end of the limiting tube (13) and the limiting cone (17) with the center of the limiting tube (13) as a reference.

7. The capacitive stylus pen with a replaceable pen tip according to claim 1, characterized in that: The front end of the inner wall of the chuck (18) is provided with a curved surface structure matching the cylindrical structure of the pen tip (19), the rear end of the inner wall of the chuck (18) is provided with a curved surface structure matching the conical structure of the front end of the limiting tube (13), and a sliding connection is formed between the chuck (18) and the limiting tube (13), and the outer side of the chuck (18) is provided with a threaded structure engaged with the inner wall groove of the limiting cone (17).

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