First device, second device and charging system

Abstract

The invention provides a first device, a second device and a charging system, and relates to the technical field of wireless charging. Wherein the first equipment comprises a first shell, the first shell comprises a first surface and a second surface opposite to the first surface, the first surface is the outer surface of the first shell, and the second surface is the inner surface of the first shell; the first functional assembly is arranged corresponding to the inner surface, and the first functional assembly is used for providing connection acting force so that the first surface of the first shell and the third surface of the second equipment can be in positioning connection; wherein the first surface comprises a first part and a second part, the first part is a plane, the second part is a cambered surface, and the cambered surface is used for reducing contact friction force during positioning connection based on connection acting force.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a first device, a second device and a charging system. Background Art

[0002] At present, magnetic wireless charging has become the mainstream configuration in related fields. This magnetic wireless charging technology mainly uses magnetic devices to achieve functions such as positioning and charging connection between objects and their corresponding charging devices. However, there are cases where users place objects in an offset position, and it is impossible for the magnetic adsorption surfaces to be absolutely smooth and flat, resulting in magnetic offset during the magnetic adsorption process, making it impossible for objects and charging devices to be accurately aligned and adsorbed, affecting the efficiency of wireless charging and communication quality. Summary of the invention

[0003] The embodiments of the present application provide the following technical solutions:

[0004] In a first aspect, the present application provides a first device, comprising: a first shell, comprising a first surface and a second surface opposite to the first surface, the first surface being the outer surface of the first shell, and the second surface being the inner surface of the first shell; a first functional component, arranged corresponding to the inner surface, the first functional component being used to provide a connecting force so that the first surface of the first shell is positioned and connected to the third surface of the second device; wherein the first surface comprises a first part and a second part, the first part being a plane, and the second part being an arc surface, and the arc surface being used to reduce contact friction when positioning and connecting based on the connecting force.

[0005] In some embodiments of the present application, the middle portion of the first surface is the first portion, and the first surface located on both sides of the first portion is the second portion.

[0006] In some embodiments of the present application, the curvature of the curved surface is smaller than a preset curvature threshold, and when the first portion is connected to the third surface, a first gap between the second portion and the third surface is smaller than a first gap threshold.

[0007] In some embodiments of the present application, a second functional component is further included, which is arranged corresponding to the inner surface and is used to communicate with a fourth functional component of the second device to transmit power to the first device, wherein the positioning connection is used to align the second functional component and the fourth functional component.

[0008] In some embodiments of the present application, the first functional component is composed of a plurality of magnets arranged along a preset direction, the poles of two adjacent magnets are opposite poles, and the length of the magnets at both ends of the first functional component is smaller than the length of the magnet in the middle.

[0009] In some embodiments of the present application, the first functional component includes a first subcomponent and a second subcomponent, and the first subcomponent and the second subcomponent are arranged in mirror symmetry with respect to the second functional component.

[0010] In some embodiments of the present application, the first subassembly includes four magnets arranged sequentially along the preset direction, and the length ratio of the four magnets is 1:3:3:1.

[0011] The second aspect of the present application provides a second device, comprising: a second shell, comprising a third surface and a fourth surface opposite to the third surface, the third surface being the outer surface of the second shell, and the fourth surface being the inner surface of the second shell; a third functional component, arranged corresponding to the inner surface, the third functional component being used to provide a connecting force so that the third surface of the second shell is positioned and connected to the first surface of the first device; wherein the third surface of the second shell is located on the side or front side of the second device, the third surface comprises adjacent third and fourth parts, the third part protrudes beyond the side surface or the front surface compared to the fourth part, and the third part is used to reduce the contact friction when the positioning connection is performed based on the connecting force.

[0012] In some embodiments of the present application, the middle portion of the third surface is the third portion, and the third surface located on both sides of the third portion is the fourth portion.

[0013] The third aspect of the present application provides a charging system, comprising: a first device, comprising: a first shell, in which a first functional component and a second functional component are arranged, and the first shell has a first surface; a second device, comprising: a second shell, in which a third functional component and a fourth functional component are arranged, and the second shell has a third surface; the second functional component is used to communicate and connect with the fourth functional component of the second device to transmit power to the first device, and the first functional component is used to provide an interaction force with the third functional component of the second device to align the second functional component and the fourth functional component; wherein, one of the first surface or the third surface includes a protruding arc portion, and the other surface is a plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0015] Figure 1 The schematic diagram of the structure of the first device in Example 1 of the present application is shown schematically;

[0016] Figure 2 The structure diagram of the first device in Embodiment 1 of the present application from another perspective is schematically shown;

[0017] Figure 3 Schematically shows Figure 1 A schematic diagram of a transverse cross-sectional structure of a first shell in a first device;

[0018] Figure 4 The structure diagram of the first functional component in the first device in Embodiment 2 of the present application is schematically shown;

[0019] Figure 5 The schematic diagram of the structure of the second device in Example 3 of the present application is schematically shown;

[0020] Figure 6 The schematic diagram of the docking structure between the first device and the second device in Example 5 of the present application is schematically shown;

[0021] Figure 7 The figure schematically shows a docking structure diagram of another implementation mode of the first device and the second device in Example 5 of the present application;

[0022] Figure 8 The schematic diagram shows the docking principle diagram of the first functional component and the second functional component in Example 6 of the present application.

[0023] Description of Figure Numbers:

[0024] 100, first device; 1, first housing; 101, first part; 102, second part; 2, first functional component; 201, first subcomponent; 202, second subcomponent; 3, second functional component;

[0025] 200, second device; 4, second shell; 401, third part; 402, fourth part; 5, third functional component; 501, third sub-component; 502, fourth sub-component; 6, fourth functional component. DETAILED DESCRIPTION

[0026] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0028] In magnetic wireless charging or similar positioning and connection scenarios, the adsorption surfaces of traditional devices are mostly flat. When the two planes cannot be absolutely smooth and flat due to manufacturing processes and other reasons, once the device has a slight offset during the adsorption process, the greater friction between the planes will prevent the device from returning to the accurate alignment position, resulting in failed or inaccurate positioning connection, affecting subsequent charging, data transmission and other functions.

[0029] Therefore, the present application provides a first device, which reduces the friction of the magnetic adsorption surface to achieve accurate alignment and adsorption of the object and the charging device, thereby improving the efficiency of wireless charging and the communication quality.

[0030] Example 1

[0031] The present application embodiment provides a first device 100, such as Figure 1 As shown, it includes: a first shell 1, including a first surface and a second surface opposite to the first surface, the first surface is the outer surface of the first shell 1, and the second surface is the inner surface of the first shell 1; a first functional component 2, arranged corresponding to the inner surface, the first functional component 2 is used to provide a connecting force so that the first surface of the first shell 1 is positioned and connected with the third surface of the second device 200; wherein the first surface includes a first part 101 and a second part 102, the first part 101 is a plane, and the second part 102 is an arc surface, and the arc surface is used to reduce the contact friction when the positioning connection is performed based on the connecting force.

[0032] The first device 100 may be in various forms, such as a stylus (electronic pen), a smart watch, a wireless charging mobile phone, etc. Taking a stylus as an example, the first housing 1 may be made of a material having a certain strength and not hindering the connection force generated by the first functional component 2, thereby ensuring that the connection force can smoothly penetrate the first housing 1 and achieve an effective connection with the second device 200, such as PC plastic, ABS plastic, aluminum alloy, etc. The first housing 1 can protect the first functional component 2 from interference or damage by external factors.

[0033] The first surface of the stylus is a side surface of its main body, including a first part and a second part, the first part is a plane, and the second part is a curved surface, wherein the curved surface is a convex curved surface. The first functional component 2 can be a group of magnetic modules, and the first functional component 2 is arranged corresponding to the first part 101. When the stylus is close to the corresponding second device 200, such as a wireless charging base or a tablet computer, the magnetic force generated by the magnetic module acts as a connecting force, so that the first surface of the stylus is close to the third surface of the second device 200, and the third surface can be a plane. The plane part (the first part 101) is in contact and connected with the third surface, and in this process, the curved surface part, due to its special arc shape, compared with the traditional full-plane design, when in contact with the surface of the second device 200, the contact mode between the curved surface and the surface of the second device 200 is point or line contact, which greatly reduces the contact area, thereby significantly reducing the friction between the first surface and the third surface.

[0034] Due to the reduction of friction, even if there is a certain angle deviation or relative displacement between the initial positioning of the first device 100 and the second device 200, the first device 100 can adjust its position under the connection force so that it can achieve accurate positioning connection with the second device 200. Due to the ability to accurately align and adsorb, the energy transmission loss during wireless charging can be greatly reduced, and the charging efficiency can be improved. At the same time, in scenarios involving data communication, stable and accurate connection ensures the stable transmission of communication signals, reduces problems such as signal interruption and data loss caused by poor connection, and thus improves the communication quality.

[0035] Therefore, the first device 100 in the embodiment of the present application designs the first surface to include a curved structure, thereby effectively solving the problem that the first device 100 and the second device 200 are hindered by friction during positioning and connection and cannot be accurately aligned and connected due to the uneven magnetic adsorption surface.

[0036] In some embodiments of the present application, the plane part can be arranged near the tip of the stylus, and the curved part can extend from the plane part to the tail end of the stylus; or vice versa; or the curved part is arranged on both sides of the plane part along the length direction of the stylus, and the curved part extends from the plane part to the tip and tail end of the stylus respectively; or the plane part and the curved part are divided into multiple parts, and the multiple plane parts and the curved part are arranged in sequence along the length direction of the stylus. The first functional component 2 is arranged corresponding to the plane part, that is, when the first device 100 contacts the second device 200, the plane part contacts the third surface of the second device 200 first. Due to the arc-shaped characteristics of the curved part, the contact mode between the curved part and the surface of the second device 200 is point or line contact, which greatly reduces the contact area, thereby significantly reducing the friction between the first surface and the third surface.

[0037] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the middle portion of the first surface is the first portion 101 , and the first surface located on both sides of the first portion 101 is the second portion 102 .

[0038] Taking the stylus pen as an example, it is assumed that the first housing 1 of the stylus pen is in the shape of an elongated cylinder as a whole. The first surface is a side surface of the outer peripheral surface of the cylinder, and the middle part of the first surface, i.e., the first part 101, is a plane area, which can be a rectangular plane with a moderate width, and is mainly used to form a relatively stable initial adsorption surface with the surface of the second device 200 when the stylus pen is connected to the second device 200 (such as the magnetic charging area on the side of the tablet computer or a special stylus storage and charging stand).

[0039] The second parts 102 located on both sides of the first part 101 are arc surfaces. The two arc surfaces can smoothly transition from the middle plane part to the two ends of the pen body, and the width of the arc surface can be consistent with the width of the plane. The first part 101 protrudes from the second parts 102 on both sides. When the stylus approaches the second device 200, the first part 101 first contacts the second device 200. At the same time, the existence of the second part 102 allows a certain gap to be retained between the second device 200 and the two ends of the stylus. When the first part 101 of the stylus contacts and adsorbs the second device 200, if there is a slight tilt or offset, thanks to the unique shape and structure of the arc surface, it only forms a point or line contact with the surface of the second device 200, so that it will not be stuck due to large-area friction, and can smoothly adjust its position under the action of magnetic force to achieve precise adsorption and positioning with the second device 200.

[0040] In some embodiments of the present application, the curvature of the curved surface is smaller than a preset curvature threshold, and when the first portion 101 is connected to the third surface, the first gap between the second portion 102 and the third surface is smaller than the first gap threshold.

[0041] like Figure 3 As shown, taking a stylus pen as an example, assuming that the preset curvature threshold is set to make the curvature of the arc surface close to a hemispherical shape, and the curvature of the arc surface of the actual stylus pen is significantly smaller than this value, for example, it is a relatively gentle arc, similar to a small arc transition.

[0042] When the first part 101 of the stylus pen is connected to the third surface (magnetic docking surface) of the tablet computer (as the second device 200), there will be a first gap between the second part 102 and the third surface. Since the curvature of the curved surface is small, the first gap between the second part 102 of the stylus pen and the third surface of the tablet computer will be smaller than the preset first gap threshold. For example, the first gap threshold is set to 1 mm, but it may actually be only about 0.3 mm. This means that while the curved surface ensures a certain gap with the third surface to avoid large-area friction, the stability of the stylus pen positioning will not be affected by too large a gap.

[0043] During the contact between the stylus pen and the tablet computer, even if there is a slight angle deviation, the contact between the arc surface and the tablet computer surface is still a small-scale point or line contact. In addition, due to the small gap, the stylus pen can adjust its position relatively quickly under the action of the magnetic force, so that the first part 101 and the third surface are accurately adsorbed and aligned. At the same time, the arc surface and the third surface can also maintain a relatively stable spatial relationship, and no collision or excessive friction will occur due to shaking.

[0044] In some embodiments of the present application, a second functional component 3 is further included, which is arranged on the corresponding inner surface and is used to communicate with the fourth functional component 6 of the second device 200 to transmit power to the first device 100, wherein the positioning connection is used to align the second functional component 3 and the fourth functional component 6.

[0045] Taking a stylus pen as an example as the first device 100, a second functional component 3, such as an induction coil or other components for power transmission, is provided on the inner surface of the first shell 1 of the stylus pen. The corresponding second device 200, such as a tablet computer, has a fourth functional component 6, such as a transmitting coil that matches it. When the stylus pen is close to the tablet computer, the first part 101 (flat part) of the first surface of the stylus pen is close to the surface of the tablet computer, and at the same time, the first functional component 2 (magnetic suction module) plays a role, generating an adsorption force to achieve a positioning connection between the stylus pen and the tablet computer. In this process, due to this positioning connection, the second functional component 3 (induction coil) in the stylus pen and the fourth functional component 6 (transmitting coil) of the tablet computer can be accurately aligned.

[0046] For example, the magnetic module adsorbs the flat part of the first surface of the stylus pen onto the third surface of the tablet computer with a magnetic attraction area, ensuring that the induction coil in the stylus pen is basically aligned with the center of the transmitting coil of the tablet computer, and the distance between the two is kept within a suitable range for efficient power transmission. Even if there is some small angle deviation or displacement when the stylus pen is close to the tablet computer, since the second part 102 on both sides of the first surface is an arc surface, under the action of the first functional component 2, the first surface can be more easily adjusted to ensure the relative position accuracy of the second functional component 3 and the fourth functional component 6, and realize the establishment of a stable power transmission link, so as to charge the stylus pen or realize other functions that require power support (such as signal enhancement when interacting with the tablet computer).

[0047] Example 2

[0048] In the related art, the stylus generally uses a single centrosymmetric magnet group, and the magnetic field generated by the centrosymmetric single magnet group has a specific distribution pattern. Since the distribution of the magnetic field in space is not absolutely uniform, but there are differences in strong and weak areas. In the case of centrosymmetry, the direction and intensity changes of the magnetic field show a certain symmetry around the center. When the stylus is close to the adsorption surface, due to the different positions of the adsorption surface, the magnitude and direction of the magnetic field force are not completely consistent and precisely corresponding, which can easily lead to misalignment during the adsorption process.

[0049] Therefore, the present application embodiment provides a first device 100, which is different from the embodiment 1 in that: Figure 4 As shown, the first functional component 2 is composed of a plurality of magnets arranged along a preset direction, the poles of two adjacent magnets are opposite poles, and the length of the magnets at both ends of the first functional component 2 is shorter than the length of the magnet in the middle.

[0050] The first functional component 2 arranges a plurality of magnets along the length direction (preset direction) of the stylus. For example, the magnets are arranged inside the pen shaft of the stylus near the first surface. The magnets in the middle are relatively long, for example, 5 mm in length, while the magnets at the two ends are shorter, perhaps only 3 mm in length. The magnetic poles of the two adjacent magnets are opposite poles, thus forming a relatively special magnetic field distribution structure.

[0051] The shape of the magnet group with short ends and long middle changes the magnetic field distribution pattern of the traditional single-shaped magnet. Normally, the magnetic field distribution of a magnet shows a certain regularity around the magnetic poles, but the design of short ends and long middle changes the strength distribution of the magnetic field in space, that is, the magnetism in the middle is strong and the magnetism at both ends is weak. During the magnetic attraction process, this uneven magnetic field distribution can more accurately match the magnetic field sensing area of ​​the adsorption surface. For example, the long middle part may produce a relatively strong and concentrated magnetic field area. When close to the adsorption surface, this area can more accurately locate the corresponding optimal adsorption point on the adsorption surface, thereby guiding the magnet group to accurately adsorb and avoid misaligned adsorption caused by mismatched magnetic field distribution.

[0052] When the stylus is close to the corresponding second device 200 (such as the magnetic area of ​​a wireless charging base or a tablet computer), the magnetic force generated by the longer magnet in the middle is relatively strong and concentrated, which can ensure to a large extent that the stylus forms a stable connection with the second device 200 in the main adsorption area and achieve preliminary positioning adsorption. The magnetic force generated by the shorter magnets at both ends is relatively weak. When in contact with the second device 200, even if there is a certain angle deviation or relative displacement, it will not cause a large obstruction due to the excessive magnetic force at both ends. For example, when the stylus and the magnetic surface of the tablet computer are relatively misaligned along the length direction of the stylus, due to the weaker magnetic force of the magnets at both ends, the stylus can be smoothly adjusted to the optimal adsorption position under the strong magnetic force of the middle magnet, so that the second functional component 3 of the stylus is accurately aligned with the fourth functional component 6 of the tablet computer to achieve subsequent functions such as power transmission or data communication.

[0053] In some embodiments of the present application, the first functional component 2 includes a first subcomponent 201 and a second subcomponent 202 , and the first subcomponent 201 and the second subcomponent 202 are arranged in mirror symmetry with respect to the second functional component 3 .

[0054] Taking the stylus as an example, the first subassembly 201 and the second subassembly 202 in the first functional component 2 are distributed on both sides of the corresponding inner surface of the first housing 1 of the stylus, and are arranged in a mirror-symmetrical manner relative to the second functional component 3 (such as an induction coil). The first subassembly 201 may include a group of magnets with a specific arrangement and polarity configuration, and the second subassembly 202 also includes a corresponding magnet arrangement. For example, the first subassembly 201 is close to the tip of the stylus and is composed of three magnets arranged in the order of NSN magnetic poles; the second subassembly 202 is close to the tail end of the stylus and is also composed of three magnets arranged in the order of NSN magnetic poles, and is distributed in a mirror-symmetrical manner with the first subassembly 201. When the stylus is close to the tablet computer (as the second device 200), the magnetic forces generated by the first subassembly 201 and the second subassembly 202 work together to adsorb the stylus to a specific magnetic attraction area of ​​the tablet computer. Due to this mirror-symmetrical arrangement, during the adsorption process, a balanced adsorption force and positioning guide can be provided to the stylus from two opposite directions. For example, when the stylus is tilted at a certain angle and approaches the tablet computer, the magnetic forces of the first subcomponent 201 and the second subcomponent 202 will cooperate to adjust the posture of the stylus, so that the second functional component 3 (induction coil) of the stylus and the fourth functional component 6 (transmitting coil) of the tablet computer can be more accurately aligned to achieve efficient power transmission or stable data communication.

[0055] The mirror-symmetric arrangement of the first subassembly 201 and the second subassembly 202 ensures that the stylus is evenly and stably stressed when it is adsorbed to the second device 200. Whether it is disturbed by external forces from the tip or the tail, it can maintain a relatively stable adsorption state, and during the positioning process, the position of the stylus can be adjusted from two symmetrical directions, greatly improving the accuracy of positioning.

[0056] In some embodiments of the present application, the first subassembly 201 includes four magnets sequentially arranged along a preset direction, and the length ratio of the four magnets is 1:3:3:1.

[0057] Take the stylus as the first device 100, and its first subassembly 201 is located on one side of the corresponding inner surface inside the first shell 1 of the stylus. Four magnets, such as SNSN, are set along the length direction (preset direction) of the stylus. Among them, the magnets at the two ends are shorter, and the two middle magnets are longer, and their length ratio is 1:3:3:1. For example, the length of the magnets at the two ends is 2 mm, and the length of the two middle magnets is 6 mm. When the stylus is close to the corresponding second device 200 (such as a tablet computer), the four magnets work together to generate magnetic force. The magnetic force generated by the shorter magnets at both ends is relatively weak. When the stylus pen and the tablet computer initially contact or have a slight offset, the position adjustment of the stylus pen will not be hindered due to excessive magnetic force. The magnetic force generated by the two longer magnets in the middle is strong and concentrated. They play a major role in adsorption and positioning during the adsorption process of the stylus pen and the tablet computer, ensuring that the stylus pen is stably adsorbed on the magnetic attraction area of ​​the tablet computer, and enabling the second functional component 3 (such as the induction coil) in the stylus pen and the fourth functional component 6 (such as the transmitting coil) of the tablet computer to be more accurately aligned to achieve functions such as power transmission or data communication.

[0058] The longer magnet in the middle provides a strong and concentrated adsorption force, ensuring a stable and reliable connection between the stylus pen and the second device 200, and ensuring that it will not be easily separated from the adsorption state due to external forces during normal use. The shorter magnets at both ends play an auxiliary adjustment role in non-ideal alignment conditions, making it easier for the stylus pen to adapt to different initial positions and angle deviations during the adsorption process, and achieve precise positioning.

[0059] Example 3

[0060] The present application embodiment provides a second device 200, such as Figure 5 As shown, it includes: a second shell 4, including a third surface and a fourth surface relative to the third surface, the third surface is the outer surface of the second shell 4, and the fourth surface is the inner surface of the second shell 4; a third functional component 5, which is arranged corresponding to the inner surface, and the third functional component 5 is used to provide a connecting force so that the third surface of the second shell 4 is positioned and connected with the first surface of the first device 100; wherein, the third surface of the second shell 4 is located on the side or front of the second device 200, and the third surface includes an adjacent third part 401 and a fourth part 402, and the third part 401 protrudes from the side surface or the front surface compared with the fourth part 402, and the third part 401 is used to reduce the contact friction when the positioning connection is performed based on the connecting force.

[0061] The second device 200 can be in various forms, such as a tablet computer, a wireless charging base, a car-mounted wireless charging stand, etc. Taking a tablet computer as an example, the second housing 4 can be made of a material with a certain strength that will not hinder the connection force generated by the third functional component 5, so as to ensure that the connection force can smoothly penetrate the second housing 4 and achieve an effective connection with the first device 100, such as PC plastic, ABS plastic, aluminum alloy, etc. The second housing 4 can protect the third functional component 5 from interference or damage by external factors.

[0062] The second shell 4 has a third surface (outer surface) and a fourth surface (inner surface). The third functional component 5 is arranged on one side of the fourth surface, and the third functional component 5 can be a combination of a group of magnetic modules. The third surface is located on the side of the tablet computer (for example, the side for adsorbing the stylus) or the front (such as the front area for connecting with a magnetic mobile phone case or other magnetic accessories). Among them, the third part 401 protrudes from the side surface or the front surface compared to the fourth part 402. For example, on the side of the tablet computer, the third part 401 is a slightly raised narrow strip area, and the fourth part 402 is the main plane area of ​​the side. When the stylus (first device 100) is close to the side of the tablet computer, the magnetic module in the third functional component 5 generates a magnetic force, so that the first surface of the stylus and the third surface of the tablet computer are close to each other, and the first surface can be a plane. In this process, due to the protruding design of the third part 401, the stylus first contacts the third part 401, and because of its protruding shape and relatively small contact area, even when the stylus has a certain angle deviation or relative displacement, the contact friction between the stylus and the third part 401 is small, and the position can be adjusted relatively smoothly under the action of magnetic force to achieve precise positioning connection, so as to facilitate subsequent charging, data transmission or other interactive functions.

[0063] The protruding design of the third part 401 effectively reduces the contact area, thereby reducing the contact friction, so that the first device 100 can more flexibly adjust its position under the connection force when connected with the second device 200, thereby achieving accurate positioning connection.

[0064] In some embodiments of the present application, the middle portion of the third surface is the third portion 401 , and the third surface located on both sides of the third portion 401 is the fourth portion 402 .

[0065] The third surface of the second shell 4 of the tablet computer has a specific structure on its side or front. The middle part of the third surface is the third part 401, for example, in the area on the side of the tablet computer for adsorbing the stylus, the middle third part 401 is a slightly raised and long strip-shaped structure. The areas on both sides of this raised strip are the fourth part 402, which are flush with the main body plane of the side of the tablet computer. When the stylus (first device 100) approaches the side, the connection force (such as magnetic force) generated by the third functional component 5 causes the stylus to interact with the third surface of the tablet computer. The stylus will first contact the raised third part 401 in the middle. Since the third part 401 is more prominent relative to the two sides, its contact area with the stylus is relatively small. When the stylus is slightly tilted or offset, this contact method can effectively reduce friction, so that the stylus can adjust its posture more easily under the traction of the connection force until it reaches a precise adsorption and positioning state, so as to perform subsequent functional operations such as wireless charging and data transmission.

[0066] In some embodiments of the present application, the third portion 401 is a curved surface, the fourth portion 402 is a plane, and the third functional component 5 is arranged corresponding to the third portion 401 .

[0067] The third part 401 in the middle of the third surface is in the shape of an arc surface, for example, the arc surface is a relatively smooth curved surface with moderate curvature, and the fourth part 402 located on both sides of the arc surface is a plane, and the third functional component 5 (for example, a combination of a magnetic suction module and a positioning sensing element) is arranged inside the tablet computer housing corresponding to the third part 401 of the arc surface. When the stylus (first device 100) approaches the side of the tablet computer, the plane part of the first surface of the stylus first approaches the arc surface third part 401 on the side of the tablet computer, and due to the magnetic force generated by the third functional component 5, the stylus begins to interact with the tablet computer by adsorption. In this process, the contact between the arc surface and the plane of the stylus is a line contact or a small area of ​​surface contact, and the friction force is significantly reduced compared to the traditional full-plane contact method. Even if the stylus has a certain tilt angle or a slight position offset when approaching, it can easily adjust its position under the traction of the magnetic force and with the help of the characteristics of the arc surface, so that the second functional component 3 in the stylus and the fourth functional component 6 in the tablet computer are accurately aligned, thereby realizing stable power transmission, data communication and other functions.

[0068] Example 4

[0069] The difference from Example 3 is that the third functional component 5 is composed of a plurality of magnets arranged along a preset direction, the poles of two adjacent magnets are opposite poles, and the length of the magnets at both ends of the third functional component 5 is shorter than the length of the magnet in the middle.

[0070] Specifically, the third functional component 5 includes a third subcomponent 501 and a fourth subcomponent 502 which are mirror-imaged relative to the fourth functional component 6. The third subcomponent 501 and the fourth subcomponent 502 include four magnets which are sequentially arranged along a preset direction, and the length ratio of the four magnets is 1:3:3:1.

[0071] The magnetic force generated by the longer magnet in the middle is relatively strong and concentrated. When it is close to the first device 100, it can provide a stable main adsorption force to ensure a reliable connection between the second device 200 and the first device 100. The magnetic force generated by the shorter magnets at both ends is weaker. In the case of non-ideal alignment, even if the initial placement position is deviated or there is a certain angle, it will not produce a strong obstruction force, which reduces the requirements for user placement accuracy and improves the convenience and fault tolerance of use. The user does not need to spend too much energy to accurately adjust the placement position of the first device 100, reducing the complexity and tediousness of the operation.

[0072] Example 5

[0073] An embodiment of the present application provides a charging system, including: a first device 100, including: a first shell 1, in which a first functional component 2 and a second functional component 3 are arranged, and the first shell 1 has a first surface; a second device 200, including: a second shell 4, in which a third functional component 5 and a fourth functional component 6 are arranged, and the second shell 4 has a third surface; the second functional component 3 is used to communicate and connect with the fourth functional component 6 of the second device 200 to transmit electric energy to the first device 100, and the first functional component 2 is used to provide an interaction force with the third functional component 5 of the second device 200 to align the second functional component 3 and the fourth functional component 6; wherein, one of the first surface or the third surface includes a protruding arc portion, and the other surface is a plane.

[0074] like Figure 6As shown, a stylus pen is used as the first device 100 and a tablet computer is used as the second device 200 as an example. A first functional component 2 (such as a magnetic suction module) and a second functional component 3 (such as an induction coil) are arranged inside the first shell 1 of the stylus pen. The first shell 1 has a first surface, and the first surface has a convexly arranged arc surface portion. A third functional component 5 (such as a circuit module for communicating with the stylus pen and controlling charging) and a fourth functional component 6 (such as a transmitting coil) are arranged inside the second shell 4 of the tablet computer. The second shell 4 has a third surface, which is a plane. When the stylus pen approaches the side of the tablet computer or the designated charging area, the first functional component 2 and the corresponding component of the tablet computer (which can be regarded as the matching part of the third functional component 5 on the tablet computer side) generate an interaction force, that is, a magnetic force. Due to the arc surface design of the first surface of the stylus pen, during the approaching process, even if the stylus pen has a certain angle deviation or relative displacement, the arc surface is in point or line contact with the third surface of the tablet computer plane, and the friction force is small, and the position can be smoothly adjusted under the action of the magnetic force. After the adsorption is stable, the second functional component 3 in the stylus pen and the fourth functional component 6 of the tablet computer realize power transmission through electromagnetic induction to charge the stylus pen, and under the positioning effect of the first functional component 2, the two can be accurately aligned to ensure charging efficiency and stability.

[0075] Or, if Figure 7 As shown, the first surface is a plane, and the third surface includes a curved portion. Due to the curved portion design of the third surface of the tablet computer, during the approach process, even if the stylus has a certain angle deviation or relative displacement, the first surface plane of the stylus and the curved third surface of the tablet computer are in point or line contact, the friction force is small, and the position can be smoothly adjusted under the action of the magnetic force.

[0076] The combined design of the arc surface and the plane surface reduces the difficulty of alignment when the first device 100 is connected to the second device 200. Even in a non-ideal placement state, the interaction force can quickly adjust to the accurate position and stably adsorb. Through the positioning function of the first functional component 2, the precise alignment of the second functional component 3 and the fourth functional component 6 is ensured, reducing the energy transmission loss caused by coil misalignment, etc., and greatly improving the charging efficiency.

[0077] Example 6

[0078] The difference from Example 5 is that the first functional component 2 in the first device 100 includes a first subcomponent 201 and a second subcomponent 202. The first subcomponent 201 includes four magnets arranged in sequence along a preset direction, the four magnets are SNSN in sequence, and the length ratio of the magnets is 1:3:3:1. The second subcomponent 202 is mirror-imaged to the first subcomponent 201 and is arranged on both sides of the second functional component 3, and the magnets are NSNS in sequence.

[0079] The third functional component 5 in the second device 200 includes a third subcomponent 501 and a fourth subcomponent 502. The third subcomponent 501 is arranged corresponding to the first subcomponent 201, and includes 4 magnets arranged in sequence along a preset direction. The 4 magnets are NSNS in sequence, and the length ratio of the magnets is 1:3:3:1. The fourth subcomponent 502 is arranged on both sides of the fourth functional component 6 in a mirror image with the third subcomponent 501, and the magnets are SNSN in sequence.

[0080] like Figure 8 As shown, because the length of the middle magnet is greater than the length of the magnets at both ends, when the first device 100 and the second device 200 are in contact and relatively misaligned, the like magnets in the first functional component 2 and the third functional component 5 will partially overlap. Based on the property that like magnets repel each other, the repulsive force will offset the attractive force. At the same time, under the action of the gravity of the first device 100, the contact state of the first device 100 and the second device 200 is unstable when they are relatively misaligned, and finally the two are separated. By reducing the misaligned adsorption area, that is, reducing it from the usual 1 / 2 misaligned adsorption area to a maximum of 1 / 3 misaligned adsorption area, this increases the probability of natural falling during misaligned adsorption, and can effectively guide users to adsorb the first device 100 to the correct magnetic adsorption position.

[0081] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A first device, characterized in that: include: A first shell, comprising a first surface and a second surface opposite to the first surface, wherein the first surface is an outer surface of the first shell, and the second surface is an inner surface of the first shell; a first functional component, arranged corresponding to the inner surface, and used for providing a connection force so that the first surface of the first housing is positioned and connected with the third surface of the second device; The first surface includes a first part and a second part, the first part is a plane, and the second part is an arc surface, and the arc surface is used to reduce contact friction when positioning and connecting based on the connection force.

2. The first device according to claim 1, characterized in that The middle part of the first surface is the first part, and the first surface located on both sides of the first part is the second part.

3. The first device according to claim 2, characterized in that The curvature of the curved surface is smaller than a preset curvature threshold, and when the first portion is connected to the third surface, a first gap between the second portion and the third surface is smaller than a first gap threshold.

4. The first device according to claim 1, characterized in that It also includes a second functional component arranged corresponding to the inner surface, which is used to communicate with the fourth functional component of the second device to transmit power to the first device, wherein the positioning connection is used to align the second functional component and the fourth functional component.

5. The first device according to claim 4, characterized in that The first functional component is composed of a plurality of magnets arranged along a preset direction, the poles of two adjacent magnets being opposite poles, wherein the length of the magnets at both ends of the first functional component is shorter than the length of the magnet in the middle.

6. The first device according to claim 5, characterized in that The first functional component includes a first subcomponent and a second subcomponent, and the first subcomponent and the second subcomponent are arranged in mirror symmetry with respect to the second functional component.

7. The first device according to claim 5, characterized in that The first subassembly includes four magnets arranged sequentially along the preset direction, and the length ratio of the four magnets is 1:3:3:

1.

8. A second device, characterized in that: include: A second shell, comprising a third surface and a fourth surface opposite to the third surface, wherein the third surface is an outer surface of the second shell, and the fourth surface is an inner surface of the second shell; a third functional component, arranged corresponding to the inner surface, and used for providing a connection force so that the third surface of the second housing is positioned and connected with the first surface of the first device; Among them, the third surface of the second shell is located on the side or front of the second device, and the third surface includes adjacent third part and fourth part. The third part protrudes from the side surface or the front surface compared with the fourth part, and the third part is used to reduce the contact friction when the positioning connection is performed based on the connection force.

9. The second device according to claim 8, characterized in that The middle part of the third surface is the third part, and the third surface located on both sides of the third part is the fourth part.

10. A charging system, characterized in that: include: The first device comprises: A first shell, in which a first functional component and a second functional component are arranged, and the first shell has a first surface; The second device comprises: a second shell, wherein a third functional component and a fourth functional component are arranged in the second shell, and the second shell has a third surface; The second functional component is used to communicate with the fourth functional component of the second device to transmit power to the first device, and the first functional component is used to provide an interaction force with the third functional component of the second device to align the second functional component with the fourth functional component; Wherein, one of the first surface or the third surface includes a convexly arranged arc surface portion, and the other surface is a plane.

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