Tablet with concealed vibrating needle and tool pen charged by tablet

Abstract

The invention provides a flat plate with a concealed vibrating needle and a tool pen charged by the flat plate, and the flat plate comprises a main housing which is provided with a containing cavity and a first through hole; the metal sheet is detachably connected to one side part of the main shell, and a motion space is formed between the metal sheet and the main shell; the sliding column is fixedly connected to the metal sheet; the contact assembly comprises a first magnetic attraction structure and an elastic needle structure used for being electrically connected with the charging equipment, and the elastic needle structure is arranged on the sliding column in a sleeving mode and fixed to the metal sheet through the first magnetic attraction structure in a magnetic attraction mode. The vibrating needle structure comprises a plurality of vibrating needles; the plurality of vibrating needles penetrate into the corresponding first through holes; according to the invention, the plurality of elastic pins of the connector in the flat plate are hidden in the flat plate, and when the to-be-charged equipment is close to the flat plate and is charged, the second magnetic structure in the to-be-charged equipment enables the first magnetic structure, which is magnetically attracted and fixed to the metal sheet, in the flat plate to be separated from the metal sheet and magnetically attracted to the second magnetic structure; and meanwhile, the plurality of vibrating needles are butted and magnetically attracted and fixed to corresponding contact points of the to-be-charged equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of tablet computers, and more particularly to a tablet computer with concealed spring pins and a tool pen charged by the tablet computer. Background Art

[0002] Most of the existing tool pens are powered by electricity, such as stylus pens or voice recorders, etc. There are also many types of charging connectors for tool pens, such as cradle type, external wiring type, docking type and direct plug-in type, etc. Among the above charging connector types, the docking type has the most advantages.

[0003] However, the spring pins in the existing tool pen tablets are mostly exposed on the outer surface of the tablet, which seriously affects the aesthetic appearance of the tablet. Based on this, it is urgent to provide a tablet with hidden spring pins and a tool pen charged by the tablet to solve the above technical problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to provide a tablet with a hidden spring pin. To solve the above problem, a tablet with a hidden spring pin and a tool pen charged by the tablet are provided.

[0005] The technical solution of the present invention to solve the above technical problem is that the plate comprises:

[0006] A main housing having a receiving cavity and a first through hole;

[0007] A metal sheet is placed in the accommodating cavity and detachably connected to a side portion of the main housing; a movement space is formed between the metal sheet and an inner wall of a corresponding side portion of the main housing;

[0008] A sliding column, fixedly connected to the metal sheet and extending in a direction away from the metal sheet;

[0009] A contact component is placed in the movement space and includes a first magnetic attraction structure and a spring pin structure for electrically connecting a charging device, and the contact component can be movably sleeved on the sliding column and magnetically fixed to the metal sheet through the first magnetic attraction structure; the first magnetic attraction structure has different magnetic strengths on a side close to the metal sheet and a side away from the metal sheet;

[0010] Among them, the elastic pin structure includes a plurality of elastic pins arranged at intervals along the length direction of the main shell; the plurality of elastic pins are all inserted into the corresponding first through holes, and the contact point head end surfaces of the plurality of elastic pins are all flush with or lower than the outer surface of the corresponding side of the main shell.

[0011] Preferably, it comprises a hollow needle seat, a needle partly movably mounted in the needle seat, and an adjusting spring, wherein one end of the adjusting spring abuts against the needle head and the other end abuts against the needle seat;

[0012] The needle moves in the needle seat under the driving of the adjusting spring.

[0013] Preferably, the elastic needle further comprises a limiting sleeve; the outer side wall of the limiting sleeve has a first threaded portion, and the inner side wall of the needle seat has a second threaded portion corresponding to the first threaded portion;

[0014] The limiting sleeve is locked and fixed to the needle seat in a manner that the first threaded portion is threadedly connected to the second threaded portion, and an active cavity for supplying movement of the needle is formed in the needle seat.

[0015] Preferably, the elastic pin structure further includes an elastic pin fixing frame, and the elastic pin fixing frame has a plurality of mounting holes coaxially arranged with the corresponding first through holes;

[0016] The plurality of spring pins are installed on the spring pin fixing frame in a manner of being plugged into the corresponding mounting holes.

[0017] Preferably, first mounting grooves are symmetrically provided on both sides of the spring pin fixing frame;

[0018] The first magnetic attraction structure includes a first magnetic attraction component and a second magnetic attraction component. The first magnetic attraction structure is fixed on the elastic fixing frame in a manner that the first magnetic attraction component and the second magnetic attraction component are respectively mounted in the two first mounting grooves.

[0019] Preferably, the first magnetic attraction member and the second magnetic attraction member both include a first magnet, a second magnet and a first limiting clamp, the first magnet and the second magnet are arranged side by side in the limiting position of the first limiting clamp, and are installed on the elastic fixing frame through the first limiting clamp.

[0020] Preferably, the elastic pin structure further includes a fixing seat;

[0021] A second mounting groove is provided in the middle of the spring pin fixing frame, and the mounting hole is located at the bottom of the second mounting groove; a plurality of spring pins are installed on the spring pin fixing frame in a manner of being fixed on the fixing seat and plugged into the corresponding mounting holes.

[0022] Preferably, a tool pen charged by the aforementioned tablet; the tool pen comprises:

[0023] The pen body has a receiving cavity and a second through hole;

[0024] A contact body is placed in the receiving cavity and includes a second magnetic attraction structure and a contact point group; wherein the contact point group includes a plurality of contact points arranged at intervals along the extension direction of the pen body; a plurality of the contact points are inserted into the corresponding second through holes, and the end surfaces of the plurality of the contact points are all flush with the plane where the corresponding second through holes are located at the position of the pen body;

[0025] When the first magnetic structure is magnetically fixed to the second magnetic structure, the elastic needle structure moves along the sliding column toward the tool pen, and the elastic needle presses against the corresponding contact point when the elastic needle structure is in the charging position.

[0026] Preferably, when the plurality of elastic pins are pressed against the corresponding contact points respectively, the needle heads of the elastic pins overcome the elastic force of the adjustment springs of the elastic pins and retract inwards so that the plurality of elastic pins are pressed against the corresponding contact points again respectively.

[0027] Preferably, the tool pen further comprises a pen cover, and the pen cover is covered on the end of the pen body to close the receiving cavity.

[0028] The beneficial effect of the present invention is that by hiding multiple spring pins of the connector in the tablet inside the tablet, when the device to be charged (for example, a tool pen) is close to the tablet and charging is implemented, the second magnetic attraction structure in the device to be charged causes the first magnetic attraction structure in the tablet that has been magnetically fixed to the metal sheet to separate from the metal sheet and magnetically attract to the second magnetic attraction structure, and at the same time, the multiple spring pins in the tablet are docked and magnetically fixed to the corresponding contact points of the device to be charged, so that the device to be charged is charged through the tablet. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a tablet and a tool pen thereof provided by an embodiment of the present invention;

[0030] Figure 2 is an exploded view of a tablet and a tool pen thereof provided by an embodiment of the present invention;

[0031] Figure 3 The present invention Figure 2 The enlarged view of the tablet and its tool pen at A;

[0032] Figure 4 This is a diagram showing the coordination relationship between the contact module and the contact body in a tablet and a tool pen thereof provided by an embodiment of the present invention;

[0033] Figure 5 is an exploded view of a contact module in a flat panel provided by an embodiment of the present invention;

[0034] Figure 6 is an exploded view of a pin in a flat plate provided by an embodiment of the present invention;

[0035] Figure 7 is an exploded view of a tool pen provided by an embodiment of the present invention;

[0036] Figure 8 is a front view of a tool pen provided by one embodiment of the present invention;

[0037] Fig. 9 It is an exploded view of a contact body in a tool pen for a child worker according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] 2-plate; 20-main housing; 200-accommodating cavity; 2000-movement space; 201-first through hole;

[0040] 21-shell cover; 22-contact module; 220-elastic needle structure; 2200-elastic needle; 2200a-needle head; 2200b-needle seat; 2200c-adjusting spring; 2200d-limiting sleeve; 2200e-active cavity; 2201-elastic needle fixing frame; 2201a-mounting hole; 2201b-first mounting slot; 2201c-second mounting slot; 2202-fixing seat;

[0041] 221-first magnetic attraction structure; 2210-first magnetic member; 2211-second magnetic member; 2210a, 2211a-first magnet; 2210b, 2211b-second magnet; 2210c, 2211c-first limit fixture;

[0042] 23-metal sheet; 230-groove; 231-threaded hole; 24-sliding column; 25-driving spring; 26-screw;

[0043] 3-tool pen; 30-pen body; 300-receiving cavity; 301-second through hole;

[0044] 31-contact body; 310-bracket; 311-second magnetic structure; 3110-third magnetic member; 3111-fourth magnetic member; 3110a, 3111a-third magnet; 3110b, 3111b-fourth magnet; 3110c, 3111c-second limit fixture; 312-contact point group; 3120-contact point; 313-fixing member; 32-pen cap. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] Reference Figure 1The present invention provides a tablet 2, which not only has the functions of reading, writing, drawing, taking notes, etc., but is also used to charge the matching tool pen 3.

[0047] In order to accommodate the charging module for charging, the tablet 2 includes a main shell 20, which can be in the shape of a cuboid or a cube, and has a housing cavity 200 and a first through hole 201 (see below for details). Since the charging module cannot be directly connected to the device to be charged, and in order to achieve zero insertion force of the device to be charged, automatically adsorbed to the tablet 2 and charged, the tablet 2 also includes a contact module 22 placed in the housing cavity 200 (correspondingly, the device to be charged has a contact body 31, see below for details), wherein the contact module 22 includes a first magnetic attraction structure 221 and an elastic pin structure 220. Obviously, when the first magnetic attraction structure 221 is magnetically attracted to the aforementioned contact body 31, the elastic pin structure 220 docks with part of the contact body 31, thereby achieving automatic orientation of the device to be charged and adsorption to the tablet 2 for charging.

[0048] Furthermore, in order to install the contact module 22 and ensure that the device to be charged is automatically adsorbed onto the tablet 2 when the device to be charged is close to the tablet 2, the tablet 2 also includes a metal sheet 23 placed in the accommodating cavity 200, and the metal sheet 23 is detachably connected to one side of the main shell 20, and a movement space 2000 is formed between the metal sheet 23 and the inner wall of the corresponding side of the main shell 20, so that the contact module 22 is magnetically fixed to the metal sheet 23 through the first magnetic attraction structure 221, and when the aforementioned contact body 31 approaches the contact module 22, the first magnetic attraction structure 221 drives the elastic pin structure 220 to separate from the metal sheet 23 under the magnetic attraction of the contact body 31, and moves in the movement space 2000 until the contact module 22 is magnetically fixed to the contact body 31. It should be noted that the material of the metal sheet 23 is ferromagnetic material. For example, the material of the metal sheet 23 can be gadolinium, iron, cobalt, nickel and the like.

[0049] Furthermore, when the device to be charged approaches the flat plate 2, in order to make the contact module 22 detach from the metal sheet 23 and adsorb to the contact body 31 of the device to be charged, that is, to assist the contact module 22 to move in the aforementioned movement space 2000, the flat plate 2 also includes a slide column 24, which is fixedly connected to the metal sheet 23 and extends in a direction away from the metal sheet 23, and the slide column 24 is provided for the contact module 22 to be movably sleeved to assist the contact module 22 to move between a fixed position (that is, the position where the contact module 22 is adsorbed and fixed to the metal sheet 23) and a charging position (that is, the position where the contact module 22 is adsorbed and charged to the contact body 31 of the device to be charged).

[0050] In addition, in order to further assist the contact module 22 to move between the fixed position and the charging position, the tablet 2 also includes a driving spring 25 sleeved on the slide post 24. Obviously, the contact module 22 overcomes the elastic force of the driving spring 25 and is magnetically fixed to the metal sheet 23 through the first magnetic attraction structure 221. Then, under the elastic force of the driving spring 25, the contact module 22 is separated from the metal sheet 23 and adsorbed to the contact body 31 of the device to be charged.

[0051] In order to enhance the appearance of the product, the spring pin structure 220 is hidden in the tablet 2 in the non-charging state, that is, the contact point 3120 of the spring pin structure 220 is lower than or flush with the outer surface of the corresponding side of the main housing 20. In other words, when the contact module 22 is in a fixed position, the contact point 3120 of the spring pin structure 220 is lower than or flush with the outer surface of the corresponding side of the main housing 20. In order to achieve the docking of the contact body 31 with the spring pin structure 220 and implement charging, when the contact module 22 is in the charging position, the spring pin 2200 of the spring pin structure 220 (see below for details) is at least partially exposed to the outside of the accommodating cavity 200. The elastic pin structure 220 includes an elastic pin group, wherein the elastic pin group includes a plurality of elastic pins 2200, and the plurality of elastic pins 2200 are all inserted into the corresponding first through holes 201. Obviously, the aforementioned first through holes 201 are mounted on the corresponding side of the aforementioned main shell 20, so that the elastic pins 2200 are exposed from the corresponding first through holes 201 to the outside of the accommodating cavity 200 in the charging state. In addition, in the non-charging state, the contact point head end surfaces of the plurality of elastic pins 2200 are all flush with or lower than the outer surface of the corresponding side of the main shell 20, so as to achieve hiding of the elastic pins 2200 on the main shell 20. It should be noted that the number of the first through holes 201 is adapted to the number of the elastic pins 2200.

[0052] In particular, in this specific embodiment, the number of the spring pins 2200 is 5. The 5 spring pins 2200 specifically represent 2 positive electrodes, 2 negative electrodes and 1 ground electrode of the electrode. Compared with the ordinary tablet 2, the tablet 2 with multiple spring pins 2200 can realize data transmission on the basis of the original charging function.

[0053] In order to ensure reliable connection between the contact module 22 and the contact piece, the spring needle 2200 includes a hollow needle seat 2200b, a needle 2200a partially movably mounted in the needle seat 2200b, and an adjustment spring 2200c, and one end of the adjustment spring 2200c abuts against the needle 2200a, and the other end abuts against the needle seat 2200b. Obviously, the needle 2200a moves in the needle seat 2200b under the drive of the adjustment spring 2200c. It can be understood that under normal conditions, the adjustment spring 2200c is always in an extended state, and the needle 2200a moves in a direction away from the needle seat 2200b under the elastic force of the adjustment spring 2200c, and the needle 2200a can never get out of the needle seat 2200b. Referring to the above, when the contact module 22 moves from the fixed position to the charging position, the multiple spring pins 2200 in the contact module 22 move synchronously to the charging position, that is, the contact points of the multiple spring pins 2200 are all pressed against the contact body 31. At this time, the needle head 2200a retracts and at the same time puts the adjustment spring 2200c in a compressed state (the adjustment spring 2200c is indirectly compressed), thereby forming a reliable electrical connection between the contact module 22 and the contact body 31.

[0054] Further, in order to assist the needle 2200a to move toward or away from the needle seat 2200b, and to reduce the space of the inner cavity of the needle seat 2200b and form an active cavity 2200e, the spring needle 2200 also includes a limiting sleeve 2200d located in the inner cavity of the needle seat 2200b. The outer wall of the limiting sleeve 2200d has a first threaded portion, and the inner wall of the needle seat 2200b has a second threaded portion corresponding to the first threaded portion. The limiting sleeve 2200d is locked and fixed to the needle seat 2200b in a manner that the first threaded portion is threadedly connected to the second threaded portion, and an active cavity 2200e for the needle 2200a to move is formed in the needle seat 2200b, so that the needle 2200a is driven by the adjustment spring 2200c to reciprocate in the active cavity 2200e, so that the contact module 22 forms a reliable electrical connection with the contact body 31 when the needle 2200a is pressed against the contact body 31.

[0055] In order to realize the installation and fixation of the elastic pin 2200, the elastic pin structure 220 also includes an elastic pin fixing frame 2201, and the elastic pin fixing frame 2201 has a plurality of mounting holes 2201a coaxially arranged with the corresponding first through holes 201, and the plurality of elastic pins 2200 are installed on the elastic pin fixing frame 2201 in a manner of being plugged into the corresponding mounting holes 2201a. Obviously, both ends of the plurality of elastic pins 2200 are exposed outside the mounting holes 2201a, so that the contact point of the elastic pin 2200 (located at the head end of the elastic pin 2200) is docked with the contact body 31, and at the same time, the end of the elastic pin 2200 is conveniently electrically connected to the charging module in the flat plate 2, that is, the contact body 31 is electrically connected to the charging module through the elastic pin 200 to implement charging.

[0056] It is understandable that a groove 230 is provided on the metal sheet 23 corresponding to the spring pin structure 220, so that the end of the spring pin 2200 is electrically connected to the charging module in the tablet 2 through the groove 230. In other embodiments, the metal sheet 23 may not have the groove 230.

[0057] In addition, the elastic pin structure 220 also includes a fixing seat 2202 for fixing the elastic pin 2200 and placed in the movement space 2000. The fixing seat 2202 is embedded in the embedding groove on the elastic pin fixing frame 2201 (obviously, the opening of the aforementioned mounting hole 2201a is located at the bottom of the embedding groove). Multiple elastic pins 2200 are all plugged and fixed on the fixing seat 2202, and one end of the multiple elastic pins 2200 extends out of the mounting hole 2201a to be electrically connected to the charging module, and the other end is exposed to the outside of the accommodating cavity 200 through the first through hole 201 (in the charging state); or, the other end is configured in the first through hole 201 (in the non-charging state) to further realize the installation and fixation of the elastic pin 2200.

[0058] In order to achieve the installation and fixation of the first magnetic structure 221, the two sides of the spring pin fixing frame 2201 are symmetrically provided with first installation grooves 2201b, and the shape of the first installation grooves 2201b can be a rectangular parallelepiped. Among them, the first magnetic structure 221 includes a first magnetic component 2210 and a second magnetic component 2211. The size and structure of the first magnetic component 2210 and the second magnetic component 2211 are the same. The first magnetic structure 221 is fixed on the spring pin fixing frame 2001 in a manner that the first magnetic component 2210 and the second magnetic component 2211 are respectively fitted into the two first installation grooves 2201b, so as to achieve the installation and fixation of the first magnetic structure 221. It should be noted that here, there is no restriction on the positions of the first magnetic component 2210 and the second magnetic component 2211. However, it should also be noted that in order to enable the first magnetic structure 221 to detach from the metal sheet 23 and be adsorbed onto the contact body 31 of the device to be charged, the magnetic strengths on both sides of the first magnetic component 2210 and the second magnetic component 2211 are different. Specifically, the magnetism of the first magnetic component 2210 and the second magnetic component 2211 is weak on the side close to the metal sheet 23, and strong on the side away from the metal sheet 23 (i.e., the side close to the contact body 31).

[0059] Specifically, in order to make the magnetic strengths on both sides of the first magnetic component 2210 and the second magnetic component 2211 different, the first magnetic component 2210 and the second magnetic component 2211 both include a first magnet 2210a, 2211a, a second magnet 2210b, 2211b and a first limiting fixture 2210c, 2211c (i.e., a shielding plate). Among them, the first limiting fixture 2210c, 2211c is composed of a main body and a first arm and a second arm respectively extending from the two ends of the main body in a direction perpendicular to the main body, and the first limiting fixture 2210c, 2211c, the first arm and the second arm are enclosed to form a limiting position for clamping the first magnet 2210a, 2211a and the second magnet 2210b, 2211b, and the first magnet 2210a, 2211a and the second magnet 2210b, 2211b are arranged side by side in the limiting position of the first limiting fixture 2210c, 2211c to shield the first magnet 2210a through the first limiting fixture 2210c, 2211c , the magnetism of the side of the second magnet 2210b close to the metal sheet 23, that is, one side of the first magnet 2210a, 2211a and the second magnet 2210b, 2211b is attached to the first limiting clamp 2210c, 2211c, and the other side is in a non-contact state with the first limiting clamp 2210c, 2211c, so as to shield the magnetism of the first magnetic attraction component 2210 and the second magnetic attraction component 2211 attached to the side of the first limiting clamp 2210c, 2211c through the first limiting clamp 2210c, 2211c (that is, the magnetism on the side close to the metal sheet 23 is weak), and the magnetism on the side in a non-contact state with the first limiting clamp 2210c, 2211c is strong.

[0060] The present invention also provides a tool pen 3 that is charged using the aforementioned tablet 2. The tool pen 3 includes a pen body 30 having a receiving cavity 300 and the aforementioned contact body 31. The receiving cavity 300 is used to receive the aforementioned contact body 31, so as to realize charging of the tool pen 3 through magnetic docking between the contact body 31 and the contact module 22. In order to realize the magnetic fixation of the contact body 31 and the contact module 22, the contact body 31 includes a second magnetic attraction structure 311 and a contact point group 312. Obviously, when the first magnetic attraction structure 221 is magnetically attracted to the second magnetic attraction structure 311, the contact point group 312 docks and presses against the corresponding spring pin.

[0061] In order to ensure the charging efficiency and the aesthetic appearance of the tool pen 3, a second through hole 301 is provided on the outer side of the pen body 30. The contact point group 312 includes a plurality of contact points 3120 arranged at intervals along the extension direction of the pen body 30. The plurality of contact points 3120 are all arranged in the corresponding second through holes 301, and the end surfaces of the plurality of contact points 3120 are all flush with the plane where the corresponding second through holes 301 are located on the pen body 30. When the first magnetic structure 221 is magnetically fixed to the second magnetic structure 311, the elastic needle structure 220 moves along the slide column 24 toward the direction of the tool pen 3, and the elastic needle 2200 is pressed against the corresponding contact point 3120 when the elastic needle structure 220 is in the charging position, so that the elastic needle 2200 is hidden in the tablet 2 when it is in the fixed position, and the elastic needle 2200 at least partially protrudes out of the accommodating cavity 200 when it is in the charging position to implement charging.

[0062] Specifically, in order to ensure a firm connection between the elastic pin 2200 and the corresponding contact point 3120, when multiple elastic pins 2200 are pressed against the corresponding contact points 3120 respectively, the needle head 2200a of the elastic pin 2200 overcomes the elastic force of the adjustment spring 2200c of the elastic pin 2200 and retracts, so that the multiple elastic pins 2200 are pressed against the corresponding contact points 3120 again.

[0063] In particular, the tool pen 3 further includes a pen cap 32, which covers the end of the pen body 30 to close the receiving cavity 300. Of course, in other embodiments, the tool pen 3 may not include the pen cap 32, but may be made in an integrated manner.

[0064] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tablet with hidden spring pins, characterized in that: The plate (2) comprises: A main housing (20) having a receiving cavity (200) and a first through hole (201); a metal sheet (23) disposed in the accommodating cavity (200) and detachably connected to a side portion of the main housing (20); a movement space (2000) is formed between the metal sheet (23) and an inner wall of a corresponding side portion of the main housing (20); A sliding column (24) fixedly connected to the metal sheet (23) and extending in a direction away from the metal sheet (23); A contact component (22) is placed in the movement space (2000) and comprises a first magnetic attraction structure (221) and a spring pin structure (220) for electrically connecting to a charging module, and the contact component (22) can be movably sleeved on the sliding column (24) and magnetically fixed to the metal sheet (23) through the first magnetic attraction structure (221); the first magnetic attraction structure (221) has different magnetic strengths on a side close to the metal sheet (23) and a side away from the metal sheet (23); The elastic pin structure (220) comprises a plurality of elastic pins (2200) arranged at intervals along the length direction of the main shell (20); the plurality of elastic pins (2200) are all inserted into the corresponding first through holes (201), and the first end surfaces of the contact points (330) of the plurality of elastic pins (2200) are all flush with or lower than the outer surface of the corresponding side of the main shell (20).

2. The flat plate according to claim 1, characterized in that The elastic needle (2200) comprises a hollow needle seat (2200b), a needle head (2200a) partially movably mounted in the needle seat (2200b), and an adjustment spring (2200c), and one end of the adjustment spring (2200c) abuts against the needle head (2200a) and the other end abuts against the needle seat (2200b); The needle (2200a) moves in the needle seat (2200b) driven by the adjustment spring (2200c).

3. The flat plate according to claim 2, characterized in that The elastic needle (2200) further comprises a limiting sleeve (2200d); the outer side wall of the limiting sleeve (2200d) comprises a first threaded portion, and the inner side wall of the needle seat (2200b) comprises a second threaded portion corresponding to the first threaded portion; The limiting sleeve (2200d) is locked and fixed to the needle seat (2200b) in a manner that the first threaded portion is threadedly connected to the second threaded portion, and an active cavity (2200e) is formed in the needle seat (2200b) to provide movement for the needle (2200a).

4. The flat plate according to claim 2, characterized in that: The elastic needle structure (220) further comprises an elastic needle fixing frame (2201), and the elastic needle fixing frame (2201) has a plurality of mounting holes (2201a) coaxially arranged with the corresponding first through holes (201); The plurality of spring pins (2200) are mounted on the spring pin fixing frame (2201) in a manner of being plugged into the corresponding mounting holes (2201a).

5. The flat plate according to claim 4, characterized in that The first installation grooves (2201b) are symmetrically formed on both sides of the elastic pin fixing frame (2201); The first magnetic attraction structure (221) comprises a first magnetic attraction component (2210) and a second magnetic attraction component (2211), and the first magnetic attraction structure (221) is fixed on the elastic fixing frame in a manner that the first magnetic attraction component (2210) and the second magnetic attraction component (2211) are respectively mounted on the two first mounting grooves (2201b).

6. The tablet according to claim 5, characterized in that The first magnetic attraction component (2210) and the second magnetic attraction component (2211) both include a first magnet (2210a, 2211a), a second magnet (2210b, 2211b) and a first limiting fixture (2210c, 2211c); the first magnet (2210a, 2211a) and the second magnet (2210b, 2211b) are arranged side by side in the limiting position of the first limiting fixture (2210c, 2211c), and are installed on the elastic fixing frame via the first limiting fixture (2210c, 2211c).

7. The flat plate according to claim 5, characterized in that The elastic pin structure also includes a fixing seat (2202); A second mounting groove (2201c) is provided in the middle of the spring pin fixing frame (2201), and the mounting hole (2201a) is located at the bottom of the second mounting groove (2201c); a plurality of spring pins (2200) are installed on the spring pin fixing frame (2201) in a manner of being fixed on the fixing seat (2202) and plugged into the corresponding mounting holes (2201a).

8. A tool pen that uses the tablet as described in any one of claims 1 to 7 for charging, characterized in that: The tool pen comprises: The pen body (30) has a receiving cavity (300) and a second through hole (301); A contact body (31), disposed in the receiving cavity (300) and comprising a second magnetic attraction structure (311) and a contact point group (312); wherein the contact point group (312) comprises a plurality of contact points (3120) arranged at intervals along the extension direction of the pen body (30); the plurality of contact points (3120) are arranged in the corresponding second through holes (301), and the end surfaces of the plurality of contact points (3120) are all flush with the plane where the corresponding second through holes (301) are located on the pen body (30); When the first magnetic structure (221) is magnetically fixed to the second magnetic structure (311), the elastic pin structure (220) moves along the sliding column (24) in a direction close to the tool pen, and the plurality of elastic pins (2200) are respectively pressed against the corresponding contact points (3120) when the elastic pin structure (220) is in a charging position.

9. The tool pen according to claim 8, characterized in that: When the multiple elastic needles (2200) are respectively pressed against the corresponding contact points (3120), the needle heads (2200a) of the elastic needles (2200) overcome the elastic force of the adjustment springs (2200c) of the elastic needles (2200) and retract inward, so that the multiple elastic needles (2200) are respectively pressed against the corresponding contact points (3120) again.

10. The tool pen according to claim 8, characterized in that: A pen cover (32) is also included, and the pen cover (32) is covered on the end of the pen body (30) to close the receiving cavity (300).

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