Rechargeable split type polishing pen

Abstract

The utility model relates to the technical field of polishing pens, in particular to a rechargeable split type polishing pen which comprises a polishing main body, a charging device and a charging device, and the polishing main body is provided with a working end and a connecting end which are oppositely arranged in the axial direction; the working end is provided with a grinding head which is detachably connected; a power supply socket is arranged on the connecting end; the rear handle section is detachably connected with the polishing main body, and an electric power storage assembly and a control assembly are arranged in the rear handle section; wherein the power supply socket is used for being externally connected with an adapter or an equipment main body, and when the rear handle section is connected with the connecting end, the electric power storage assembly is electrically connected with the power supply socket through the control assembly. According to the rechargeable split type polishing pen, the power supply socket can be connected with the adapter or the equipment body to supply power to the polishing pen, the connecting end can be connected with the rear handle section, the power supply device supplies power to the polishing pen, the two power supply modes of charging and plugging are compatible, and the power supply modes are flexible and changeable.

Description

Technical Field

[0001] This application relates to the field of polishing pen technology, and more particularly to a rechargeable, detachable polishing pen. Background Technology

[0002] Existing polishing pens are mainly divided into rechargeable and plug-in types, but each has its limitations. Rechargeable pens are convenient to carry and use, but have limited battery life and cannot have their batteries replaced, requiring frequent charging, which affects the user's work efficiency and user experience. Plug-in pens provide continuous power, but restrict the user's range of motion and reduce work flexibility.

[0003] Therefore, existing polishing pens suffer from a single power supply method and low flexibility. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a rechargeable split polishing pen, which aims to solve the problems of single power supply method and low flexibility of existing polishing pens.

[0005] The technical solution adopted by this application to solve the technical problem is as follows: A rechargeable, split-type polishing pen is provided, comprising:

[0006] A grinding body has a working end and a connecting end arranged opposite each other along the axial direction; the working end is provided with a detachably connected grinding head; and the connecting end is provided with a power socket.

[0007] The rear handle section is detachably connected to the grinding body, and a power storage component and a control component are provided inside the rear handle section;

[0008] The power socket is used to connect an external adapter or the main body of the device, and when the rear handle is connected to the connection end, the energy storage component is electrically connected to the power socket through the control component.

[0009] Optionally, the grinding body includes a spindle and a driver; one end of the spindle is detachably connected to the grinding head, and the other end of the spindle is connected to the driver; and the output shaft of the driver is interference-fitted to the spindle; the power socket is located at the other end of the driver and is electrically connected to the driver.

[0010] Optionally, the grinding body further includes a soft rubber tube, and the spindle is sleeved on the outside of the soft rubber tube; the grinding head is embedded in the soft rubber tube, and the grinding head is detachably connected to the spindle through the soft rubber tube.

[0011] Optionally, the grinding body further includes a bearing and a buffer sleeve, wherein the bearing is sleeved on the outside of the spindle; and the buffer sleeve is sleeved on the outside of the bearing.

[0012] Optionally, the control component includes a control circuit board and a charging socket, the charging socket being electrically connected to the control circuit board, and the energy storage component being disposed on the control circuit board; when the control circuit board is connected to the connection terminal, the energy storage component is electrically connected to the power supply socket through the control circuit board.

[0013] Optionally, the grinding body further includes a housing, and the rear handle section further includes a rear handle shell. Both the housing and the rear handle shell are hollow cavity structures. The housing and the rear handle shell are detachably connected, and the energy storage component and the control component are both located in the cavity of the rear handle shell.

[0014] Optionally, the rear handle section further includes a control panel, which is correspondingly configured with the control circuit board; the control panel is provided with a speed adjustment key and a power switch.

[0015] The rear handle housing is provided with a control section corresponding to the control panel, and the control section is provided with adjustment keys that correspond one-to-one with the speed adjustment key and the power switch.

[0016] Optionally, the housing includes a front handle and a middle handle connected to each other, both of which are hollow cavity structures. The main shaft is located in the cavity of the front handle, and the actuator is located in the cavity of the middle handle.

[0017] Optionally, a retaining ring is also provided in the cavity of the front handle, the retaining ring being located at one end of the front handle near the middle handle; the outer side of the retaining ring is provided with a thread, and the inner side of the cavity of the middle handle is provided with a pattern corresponding to the thread, the retaining ring being helically connected to the middle handle through the thread.

[0018] Optionally, the rear handle section further includes a fixing cap and a circuit board bracket. The fixing cap is fitted onto the end of the rear handle shell away from the grinding body, and the fixing cap is provided with a through hole corresponding to the charging socket.

[0019] The circuit board support has a hollow cavity structure, and the control circuit board is located inside the circuit board support. The circuit board support is provided with cards and parts corresponding to the control panel.

[0020] Compared with existing technologies, this application provides a rechargeable detachable polishing pen comprising a polishing body and a rear handle. The working end of the polishing body is provided with a detachable polishing head. The polishing body can be powered by connecting an adapter or the main device via a power socket at the connecting end, thereby driving the polishing head to move and operate. Alternatively, the rear handle, which has an internal power supply device, can be connected to the connecting end, allowing the power supply device to power the polishing body and drive the polishing head to move and operate. This makes the rechargeable detachable polishing pen compatible with both rechargeable and plug-in power supply methods, offering flexibility in power supply options. Furthermore, polishing heads of different sizes and materials can be replaced according to actual needs, further enhancing the flexibility of the rechargeable detachable polishing pen. Attached Figure Description

[0021] Figure 1 This is a split view of the rechargeable split polishing pen provided in this application;

[0022] Figure 2 This is a schematic diagram and AA cross-sectional view of the rechargeable split polishing pen provided in this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Control circuit board; 101. Charging socket; 2. Driver; 21. Power supply socket; 3. Grinding head; 4. Energy storage assembly; 41. Battery backing adhesive; 5. First circuit board bracket; 6. Control panel; 61. Display surface; 7. Second circuit board bracket; 8. Spindle; 9. Flexible tubing; 10. Fixing cap; 11. Fixing sleeve; 12. Bearing; 13. Fixing ring; 14. Buffer sleeve; 15. Front handle; 16. Middle handle; 17. Rear handle shell; 171. Control unit. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Reference Figure 1 and Figure 2 The first embodiment of this application provides a rechargeable split-type polishing pen, comprising: a polishing body having a working end and a connecting end arranged opposite to each other along the axial direction; the working end being provided with a detachably connected polishing head 3; the connecting end being provided with a power socket 21; and a rear handle section being detachably connected to the polishing body, the rear handle section being provided with a power storage component 4 and a control component; wherein, the power socket 21 is used to connect an external adapter or device body, and when the rear handle section is connected to the connecting end, the power storage component 4 is electrically connected to the power socket 21 through the control component.

[0029] When the rear handle is connected to the connecting end, the power supply device powers the grinding body and drives the grinding head 3. At this time, the device is used for charging, eliminating the limitations of power cords and thus not restricting the user's range of motion. When the rear handle is separated from the connecting end (i.e., when the rear handle is separated from the grinding body), a plug-in power supply can be used. This involves connecting the device to an external power source, adapter, or main unit via a power socket 21 through a power cord or other connection method to power the grinding body and drive the grinding head 3. Battery life is not a concern. Users can flexibly change the power supply method according to their actual needs, improving work efficiency.

[0030] The power socket 21 can be a DC socket, which can be directly connected to an external power source, or connected to an adapter or the main body of the device, to power the grinding body and drive the grinding head 3. Specifically, the adapter and the main body of the device have existing structures and built-in control modules. By connecting the power socket 21 to the adapter or the main body of the device, the power of the driver 2 can be adjusted by the control module of the adapter or the main body of the device according to the user's needs, thereby controlling the movement direction, speed, and on / off status of the grinding pen.

[0031] The grinding head 3 is detachably connected to the grinding body, and different sizes and materials of grinding heads 3 can be replaced according to actual needs, further improving the flexibility of the rechargeable detachable grinding pen.

[0032] This embodiment of the rechargeable detachable polishing pen includes a polishing body and a rear handle. The working end of the polishing body is equipped with a detachable polishing head 3. The polishing body can be powered by connecting an adapter or the main device via a power socket 21 at the connecting end, thereby driving the polishing head 3 to move and operate. Alternatively, the rear handle, which has an internal power supply device, can be connected to the connecting end, allowing the power supply device to power the polishing body and drive the polishing head 3 to move and operate. This makes the rechargeable detachable polishing pen compatible with both charging and plug-in power supply methods, providing flexibility in power supply options. Furthermore, polishing heads 3 of different sizes and materials can be replaced according to actual needs, further enhancing the flexibility of the rechargeable detachable polishing pen.

[0033] The rechargeable, detachable nail polishing pen of this embodiment can be used in the nail art industry. It can adjust the working state of the polishing pen for nail pretreatment, nail polishing and buffing, nail shaping, nail removal, etc. At the same time, the power supply method can be adjusted according to the user's needs, making it convenient for the user to carry and use.

[0034] In some embodiments, the polishing body includes a spindle 8 and a driver 2; one end of the spindle 8 is detachably connected to the polishing head 3, and the other end of the spindle 8 is connected to the driver 2; the output shaft of the driver 2 is interference-fitted with the spindle 8; the power socket 21 is located at the other end of the driver 2 and is electrically connected to the driver 2. That is, the polishing head 3 is connected to the driver 2 via the spindle 8, and is driven to move and work by the driver 2; the driver 2 can be a motor, electric motor, etc. Furthermore, the interference fit between the driver 2 and the spindle 8 improves the connection stability. The driver 2 can be directly connected to an external adapter or the main body of the device via the power socket 21, thereby driving the spindle 8 to rotate the polishing pen.

[0035] In some embodiments, the power supply socket 21 of the driver 2 is provided with a groove that can be fitted into the output shaft of the driver 2. This engagement between the output shaft and the groove enhances the connection stability between the control circuit board 1 and the driver 2, preventing poor contact. Furthermore, the grinding body also includes a flexible rubber tube 9, with the spindle 8 sleeved on the outside of the flexible rubber tube 9. The grinding head 3 is embedded in the flexible rubber tube 9, and is detachably connected to the spindle 8 via the flexible rubber tube 9. The flexible rubber tube 9 is used to fix the position of the grinding head 3, and the spindle 8 is used to drive the grinding head 3 to follow the movement of the driver 2 after it is driven. Specifically, the flexible rubber tube 9 has a certain coefficient of friction, which can fix the embedded grinding head 3, preventing the grinding head 3 from flying out due to unstable engagement during the vibration movement of the grinding head 3 driven by the driver 2. Therefore, when replacing the grinding head 3, the grinding head 3 is simply pulled out of the flexible rubber tube 9, and the replacement grinding head 3 is then embedded in the flexible rubber tube 9 and fixed stably.

[0036] Furthermore, a bearing 12 and a buffer sleeve 14 are also provided inside the cavity of the front handle 15. The bearing 12 is sleeved on the outside of the main shaft 8; the buffer sleeve 14 is sleeved on the outside of the bearing 12. The bearing 12 serves to fix the position of the main shaft 8, limit its rotational concentricity, and thus limit the rotational concentricity of the grinding head 3, ensuring the consistency between the grinding head 3 and the main shaft 8, and facilitating the drive 2 to drive the grinding head 3 through the main shaft 8. The buffer sleeve 14 is sleeved on the bearing 12 to provide shock absorption, preventing excessive amplitude of the main shaft and grinding head 3 movement from causing significant damage to the cavity of the front handle 15. It also reduces the operating noise of the rechargeable, detachable grinding pen, improving the user experience.

[0037] In some embodiments, the control component includes a control circuit board 1 and a charging socket 101, the charging socket 101 being electrically connected to the control circuit board 1, and the energy storage component 4 being disposed on the control circuit board 1; when the control circuit board 1 is connected to the connection terminal, the energy storage component 4 is electrically connected to the power supply socket 21 through the control circuit board 1.

[0038] The energy storage component 4 can be directly mounted on the control circuit board 1 and connected to the control circuit board 1; and in order to improve the connection stability between the energy storage component 4 and the control circuit board 1, a battery backing adhesive 41 can be provided between the energy storage component 4 and the control circuit board 1; the battery backing adhesive 41 can be double-sided adhesive to bond the energy storage component 4 and the control circuit board 1.

[0039] The current supplied by the energy storage component 4, after being regulated by the control circuit board 1, flows into the driver 2, driving the driver 2 to move the spindle 8 and the polishing pen. The control circuit board 1 can be used to set the current magnitude, direction, and frequency, thereby controlling the rotation speed, direction, and frequency of the polishing pen for ease of use. Specifically, the control circuit board 1 is a PCBA board, with one end connected to the driver 2 and the energy storage component 4 connected to it, driving the driver 2 through the control circuit board 1.

[0040] The charging socket 101 is used to charge the energy storage component 4 via the control circuit board 1. Specifically, the charging socket 101 can be a DC socket, and the charging socket 101 can be provided with a connection port. The connection port can be set to the required model according to actual needs, such as a USB interface, a Type-C interface, etc.; the connection port is used to connect to the outside world.

[0041] In some embodiments, the grinding body further includes a housing, and the rear handle section further includes a rear handle shell 17. Both the housing and the rear handle shell 17 are hollow cavity structures. The housing and the rear handle shell 17 are detachably connected, and the energy storage component 4 and the control component are both located in the cavity of the rear handle shell 17.

[0042] The energy storage component 4 can be a disposable battery, a rechargeable battery, etc., preferably a rechargeable battery. When the energy storage component 4 is a disposable battery, the rechargeable split-type polishing pen can continue to be used by replacing the disposable battery. When the energy storage component 4 is a rechargeable battery, after the power in the energy storage component 4 is exhausted, it is connected to the charging socket 101 through an external power source, and then the energy storage component 4 is charged through the control circuit board 1.

[0043] During the charging process of the power storage component 4, the rear handle section can be detached and directly connected to the power socket 21 via an external power source, adapter, or the main body of the device. This direct-plug power supply allows continued use of the rechargeable detachable polishing pen, ensuring that the charging process of the rechargeable battery does not affect its use. Alternatively, the power supply from the power storage component 4 can be used while it is charging. However, for safety reasons, it is preferable to detach the rear handle section during the charging process to separate it from the polishing body and prevent overheating and damage to the rechargeable detachable polishing pen. Furthermore, multiple rear handle sections can be purchased (users can purchase multiple rear handle sections along with the polishing body) to replace a depleted rear handle section with a charged one for continued use; in this case, the rear handle section functions similarly to a power bank.

[0044] Furthermore, the housing includes a front handle 15 and a middle handle 16 connected to each other. Both the front handle 15 and the middle handle 16 are hollow cavity structures. The main shaft 8 is located in the cavity of the front handle 15, and the driver 2 is located in the cavity of the middle handle 16.

[0045] The connection between the front handle 15 and the middle handle 16, and between the middle handle 16 and the rear handle housing 17, can be a snap-fit ​​connection, a screw connection, a threaded connection, a magnetic connection, etc. The front handle 15, the middle handle 16, and the rear handle housing 17 can all be designed in different colors for easy differentiation and to facilitate the subsequent disassembly of the rear handle housing 17 to change the power supply method.

[0046] The middle handle 16 and the rear handle housing 17 are preferably connected by a snap-fit ​​or magnetic connection. The snap-fit ​​and magnetic connections allow the user to easily remove the rear handle housing 17 and directly connect the external power supply, adapter, device body, etc., to the power socket 21 to power the driver 2 before use. When the power socket 21 is directly connected to an external power supply with a constant current, the output power of the grinding head 3 is constant, meaning the movement of the grinding head 3 is stable. When the adapter or device body is connected to the power socket 21, the movement of the grinding head 3 can be adjusted.

[0047] Furthermore, to stabilize the position of the spindle, the grinding body also includes a fixing sleeve 11. The fixing sleeve 11 is located at the end of the front shank 15 away from the middle shank 16, with one end connected to the spindle 8 and the other end in contact with the outside. The fixing sleeve 11 is used to tightly connect the spindle 8 to the inside of the cavity of the front shank 15, thereby stabilizing the position of the spindle and fixing the position of the soft rubber tube 9 inside the spindle 8. The fixing sleeve 11 is located inside the cavity of the front shank 15, and the fixing sleeve 11 can be a copper sleeve. Specifically, the fixing sleeve 11 is located on the inner side of the front shank 15, at the end of the front shank 15 away from the middle shank 16.

[0048] Furthermore, a fixing ring 13 is also provided in the cavity of the front handle 15, the fixing ring 13 is located at one end of the front handle 15 near the middle handle 16; the outer side of the fixing ring 13 is provided with threads, and the inner side of the cavity of the middle handle 16 is provided with a pattern corresponding to the threads, and the fixing ring 13 is helically connected to the middle handle 16 through the threads.

[0049] The threaded connection allows for adjustment of the tightness of the connection between the front handle 15 and the middle handle 16 based on the fit, number of turns, and other design considerations. Furthermore, the threaded connection prevents the rechargeable, detachable polishing pen from separating from the front handle 15 and the rear handle housing 17 due to drop. The retaining ring 13 connects the front handle 15 and the middle handle 16. The retaining ring 13 also has a through hole corresponding to the driver 2, facilitating connection between the driver 2 and the spindle and securing the position of the driver 2.

[0050] In some embodiments, the rear handle section further includes a control panel 6, which is correspondingly disposed with the control circuit board; the control panel 6 is provided with a speed adjustment key and an on / off key; the rear handle housing 17 is provided with a control part 171 corresponding to the control panel 6, and the control part 171 is provided with adjustment keys that correspond one-to-one with the speed adjustment key and the on / off key.

[0051] That is, the control panel 6 on the control circuit board 1 corresponds to the control part 171 of the rear handle shell 17. By touching or pressing the bar control on the control part 171, the speed adjustment key or the on / off key on the control panel 6 can be pressed, thereby triggering the corresponding position on the control circuit board 1 to adjust the movement speed and movement status (including direction, on / off, pause, etc.) of the rechargeable split polishing pen.

[0052] The power button can be pressed and held to turn the device on and off, a short press to pause the drive 2, and a short double press to change the drive direction of the drive 2, such as switching between forward and reverse rotation.

[0053] The speed control button can be set as a one-button speed adjustment button. By pressing the button multiple times, the speed can be increased in one direction. When the speed is at its highest value, pressing it again will reduce it to the lowest speed. Alternatively, there can be several speed control buttons, each corresponding to a different speed.

[0054] Next to the power switch on the control panel 6, there is also a power indicator light that can be used to determine whether the power is on by the power color; when it is on, the power indicator light is green; when the power is insufficient, the power indicator light is red or flashes intermittently.

[0055] In addition, the control unit 171 is provided with a display surface 61, the position of which corresponds to the position of the control panel 6. The display surface 61 can be a mirror to allow light to pass through, and can display the contents of the digital tube in the control panel 6; thereby displaying the battery status, such as the power level and operating power. Specifically, the speed adjustment key can include nine speed settings from 1 to 9. When adjusting the speed, the speed setting will be displayed in numerical form, with a larger number representing a higher speed. When paused, "P" will be displayed.

[0056] In some embodiments, the rear handle section further includes a fixing cap 10 and a circuit board bracket. The fixing cap 10 is fitted onto the end of the rear handle shell 17 away from the grinding body. The fixing cap 10 has a through hole corresponding to the charging socket 101. The circuit board bracket has a hollow cavity structure. The control circuit board 1 is located inside the circuit board bracket. The circuit board bracket has a card and part corresponding to the control panel 6.

[0057] The fixing cap 10 can be fitted into the inner side of one end of the rear handle housing 17. The fixing cap 10 can limit or fix the position of the charging socket 101 to prevent the charging socket 101 from falling off. At the same time, it is provided with a through hole corresponding to the connection port on the charging socket 101 to facilitate the electrical connection between the charging socket 101 and an external power source.

[0058] The fixing cap 10 has a hollow cavity structure, which allows the charging socket 101 to be exposed and connected to the outside world; or, the fixing cap 10 is provided with a through hole corresponding to the charging socket 101, through which the charging socket 101 can pass through the fixing cap 10 and connect to the outside world.

[0059] The circuit board bracket is used to fix the position of the control circuit board 1; the latches and parts on the circuit board bracket are used to engage with the control panel 6, fixing the position of the control panel 6, thereby enabling switching and speed adjustment operations. Specifically, the control components and the energy storage components 4 are both located inside the circuit board bracket, while the rear handle housing 17 is fitted onto the outside of the circuit board bracket. The control panel 6 is located on the latches and parts of the circuit board bracket, between the circuit board bracket and the rear handle housing 17.

[0060] Furthermore, the circuit board bracket includes a first circuit board bracket 5 and a second circuit board bracket 7. The first circuit board bracket 5 is provided with a clip and part corresponding to the control panel 6, dividing it into two parts to facilitate the fabrication of the circuit board bracket. The connection method between the first circuit board bracket 5 and the second circuit board bracket 7 can be a snap-fit ​​connection, a magnetic connection, a bolt connection, etc., preferably a snap-fit ​​connection or a magnetic connection, which facilitates disassembly and replacement of the energy storage component 4. The first circuit board bracket 5 and the second circuit board bracket 7 are preferably made of plastic, which is convenient to manufacture and has low cost.

[0061] In summary, this application provides a rechargeable detachable polishing pen comprising a polishing body and a rear handle. The working end of the polishing body is equipped with a detachable polishing head. Power can be supplied to the polishing body via a power socket connected to an adapter or the main device, driving the polishing head to move and operate. Alternatively, the rear handle, which has an internal power supply device, can be connected to the connection end, allowing the power supply device to power the polishing body and drive the polishing head to move and operate. This makes the rechargeable detachable polishing pen compatible with both rechargeable and plug-in power supply methods, offering flexibility in power supply options. Furthermore, polishing heads of different sizes and materials can be replaced according to actual needs, further enhancing the flexibility of the rechargeable detachable polishing pen.

[0062] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the examples of this application.

Claims

1. A rechargeable, detachable polishing pen, characterized in that, include: A grinding body has a working end and a connecting end arranged opposite each other along the axial direction; the working end is provided with a detachably connected grinding head; and the connecting end is provided with a power socket. The rear handle section is detachably connected to the grinding body, and a power storage component and a control component are provided inside the rear handle section; The power socket is used to connect an external adapter or the main body of the device, and when the rear handle is connected to the connection end, the energy storage component is electrically connected to the power socket through the control component.

2. The rechargeable split-type polishing pen according to claim 1, characterized in that, The grinding body includes a spindle and a driver; one end of the spindle is detachably connected to the grinding head, and the other end of the spindle is connected to the driver; and the output shaft of the driver is interference-fitted to the spindle. The power socket is located at the other end of the driver and is electrically connected to the driver.

3. The rechargeable split-type polishing pen according to claim 2, characterized in that, The grinding body also includes a soft rubber tube, and the spindle is sleeved on the outside of the soft rubber tube; the grinding head is embedded in the soft rubber tube, and the grinding head is detachably connected to the spindle through the soft rubber tube.

4. The rechargeable split-type polishing pen according to claim 2, characterized in that, The grinding body also includes a bearing and a buffer sleeve, wherein the bearing is sleeved on the outside of the spindle; and the buffer sleeve is sleeved on the outside of the bearing.

5. The rechargeable split-type polishing pen according to claim 2, characterized in that, The control component includes a control circuit board and a charging socket. The charging socket is electrically connected to the control circuit board, and the energy storage component is disposed on the control circuit board. When the control circuit board is connected to the connection terminal, the energy storage component is electrically connected to the power supply socket through the control circuit board.

6. The rechargeable split-type polishing pen according to claim 5, characterized in that, The grinding body also includes a housing, and the rear handle section also includes a rear handle shell. Both the housing and the rear handle shell are hollow cavity structures. The housing and the rear handle shell are detachably connected. The energy storage component and the control component are both located in the cavity of the rear handle shell.

7. The rechargeable split-type polishing pen according to claim 6, characterized in that, The rear handle section also includes a control panel, which is correspondingly configured with the control circuit board; the control panel is equipped with a speed adjustment key and a power switch. The rear handle housing is provided with a control section corresponding to the control panel, and the control section is provided with adjustment keys that correspond one-to-one with the speed adjustment key and the power switch.

8. The rechargeable split-type polishing pen according to claim 7, characterized in that, The housing includes a front handle and a middle handle that are connected to each other. Both the front handle and the middle handle are hollow cavity structures. The main shaft is located in the cavity of the front handle, and the actuator is located in the cavity of the middle handle.

9. The rechargeable split-type polishing pen according to claim 8, characterized in that, A retaining ring is also provided in the cavity of the front handle, and the retaining ring is located at one end of the front handle near the middle handle; the outer side of the retaining ring is provided with a thread, and the inner side of the cavity of the middle handle is provided with a pattern corresponding to the thread, and the retaining ring is helically connected to the middle handle through the thread.

10. The rechargeable split-type polishing pen according to claim 7, characterized in that, The rear handle section also includes a fixing cap and a circuit board bracket. The fixing cap is fitted onto the end of the rear handle shell away from the grinding body, and the fixing cap is provided with a through hole corresponding to the charging socket. The circuit board support has a hollow cavity structure, and the control circuit board is located inside the circuit board support. The circuit board support is provided with cards and parts corresponding to the control panel.

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