Patent Description:
This disclosure relates to the field of electronic devices, and the invention in particular relates to a stylus receiving apparatus and a stylus receiving method.

Some electronic devices, such as a mobile phone and a tablet computer, are often used to cooperate with a stylus. A receiving structure used to receive the stylus may be disposed on these electronic devices.

It is known that the solution of a stylus receiving apparatus has a problem of poor hand feeling. The specific performance is as follows:.

<CIT> relates to an electronic device equipped with a receptacle for a stylus. The receptacle comprises a sensor and an actuator. The sensor outputs a signal based on an external force applied to the device's housing. The actuator restrains the component from coming out from the opening, in response to an output of the signal from the sensor.

The object of the present invention is to provide a stylus receiving apparatus and a stylus receiving method to resolve problems of receiving a stylus in an existing electronic device and a relatively poor hand feeling. This object is solved by the attached independent claims and further embodiments and improvements of the invention are listed in the attached dependent claims. Hereinafter, up to the "brief description of the drawings", expressions like ". aspect according to the invention", "according to the invention", or "the present invention", relate to technical teaching of the broadest embodiment as claimed with the independent claims. Expressions like "implementation", "design", "optionally", "preferably", "scenario", "aspect" or similar relate to further embodiments as claimed, and expressions like "example", ". aspect according to an example", "the disclosure describes", or "the disclosure" describe technical teaching which relates to the understanding of the invention or its embodiments, which, however, is not claimed as such.

According to a first aspect according to the invention, the invention provides a stylus receiving apparatus, including a bracket, an ejection mechanism, a holding assembly, and a sensing assembly. The bracket defines an accommodating space, and the accommodating space has an exit/entrance port for inserting a stylus. The ejection mechanism is disposed in the accommodating space, and the ejection mechanism can be driven to a locked state or an unlocked state by the stylus that is inserted into the accommodating space. In the locked state, the ejection mechanism allows the stylus to be received in the accommodating space. In the unlocked state, the ejection mechanism is capable of ejecting the stylus from the accommodating space. The holding assembly is configured to cooperate with a held element on the stylus, so as to hold the stylus. The holding assembly includes a magnet part and a coil part. The holding assembly generates a first magnetic field when the coil part is powered off. The holding assembly generates a second magnetic field when the coil part is powered on. A holding force exerted by the second magnetic field on the stylus is smaller than a holding force exerted by the first magnetic field on the stylus. The sensing assembly is communicatively connected to the coil part. The sensing assembly senses a state change of the ejection mechanism by sensing movement of the ejection mechanism. The coil part is powered off when the sensing assembly senses that the ejection mechanism changes from an unlocked state to a locked state. The coil part is powered on when the sensing assembly senses that the ejection mechanism changes from the locked state to the unlocked state.

A method for using the stylus receiving apparatus according to the invention is as follows:.

Therefore, it can be learned that the stylus receiving apparatus in this embodiment of this application has beneficial effects of reliably holding the stylus, pressing and taking out the stylus with less force, better hand feeling, and better user experience.

In a possible implementation, the magnet part is in a shape of an arc ring, and the arc ring has an inner circumferential surface and an outer circumferential surface that are radially opposite, a first axial end surface and a second axial end surface that are axially opposite, and a first arc end surface and a second arc end surface that are archwise opposite. The first axial end surface, the first arc end surface, the second axial end surface, and the second arc end surface are sequentially connected end-to-end to form a closed loop. The coil part is formed by winding a wire around the magnet part along the closed loop, and the coil part can be powered on to generate a magnetic field opposite to a magnetic field of the magnet part.

In this implementation, the holding assembly that integrates a magnet part and a coil part is formed by winding a wire around the magnet part along the closed loop. In the holding assembly formed in this way, a magnetic field distribution when the coil part is powered on and a magnetic field distribution of the magnet part are basically consistent with each other, and it is easy to control the overall magnetic field of the holding assembly through inverse superposition of magnetic fields of the coil part and the magnet part, so as to reliably control a holding force.

In a possible implementation, the coil part is defined between an inner circumferential surface and an outer circumferential surface of the arc ring.

In this implementation, a winding range of the coil part is located between the inner circumferential surface and the outer circumferential surface of the arc ring, so that winding of the coil part does not increase a thickness (that is, spacing between the inner circumferential surface and the outer circumferential surface) of the magnet part, thereby facilitating mounting of the holding assembly and reducing required mounting space.

In a possible implementation, there are a plurality of holding assemblies, and the plurality of holding assemblies are distributed along a circumferential direction, and are enclosed into a ring that communicates with the accommodating space in an axial direction, to allow the stylus to penetrate.

In this implementation, a plurality of holding assemblies are enclosed into a ring, so that the stylus can be held from each direction, thereby improving holding reliability. In addition, the coil part in each direction also generate a corresponding reverse magnetic field when the coil part is powered on, to offset at least a part of a holding force of the magnet part, so as to help eject the stylus.

In a possible implementation, the sensing assembly includes a magnetic member and a Hall element. The magnetic member is disposed in the ejection mechanism, and can be displaced with a change of the ejection mechanism between a locked state and an unlocked state. The Hall element and the bracket are relatively fastened, and can sense displacement of the magnetic member.

In this implementation, a state change of the ejection mechanism is determined based on movement that is of the magnetic element with the ejection mechanism and that is sensed by the Hall element, and the coil part is controlled to be powered on or powered off, so that the stylus can be easily held firmly when being received, and a holding force when the stylus is ejected can be easily reduced.

In a possible implementation, the stylus receiving apparatus further includes a power supply apparatus, configured to supply power to the coil part and/or the sensing assembly. A power supply mode of the power supply apparatus is battery power supply or wireless power supply.

In this implementation, power supply can be implemented by additionally providing a battery for the stylus receiving apparatus or in a wireless manner (for example, a primary power supply that may come from an electronic device), so as to supply power to each power consumption structure of the apparatus.

In a possible implementation, the bracket includes a seat frame and a cover, and the cover is detachably connected to the seat frame, to enclose into the accommodating space; and when the cover is detached from the seat frame, the accommodating space is opened.

In this implementation, the detachable seat frame and the detachable cover are disposed, so as to facilitate operations such as disassembly/assembly and replacement of an internal structure of the bracket.

In a possible implementation, there are two holding assemblies, and both are in a shape of a semicircular ring; and one of the two holding assemblies is connected to the seat frame, and the other is connected to the cover; and when the cover and the seat frame are combined, the two holding assemblies are enclosed into a ring that communicates with the accommodating space in an axial direction, to allow the stylus to penetrate.

In this implementation, the two holding assemblies are separately mounted on the seat frame and the cover, and are enclosed into a ring that communicates with the accommodating space, to allow the stylus to penetrate, and enable the stylus to be held from two sides.

In a possible implementation, the ejection mechanism includes a sliding seat, a sliding member, an elastic member, and a guide rod. The sliding seat is fixedly connected to the bracket and is located in the accommodating space. The sliding member may slidably cooperate with the sliding seat, and a sliding direction is along an axial direction of the accommodating space; and the sliding member includes a guide plate with a guide groove. The elastic member is elastically supported between the sliding seat and the sliding member, and can exert an elastic force on the sliding member in a direction toward the exit/entrance port. The guide rod includes a fastened end and a movable end. The fastened end and the sliding seat are relatively fastened. The movable end can movably cooperate with the guide groove, and can move along the guide groove when the sliding member is driven by the stylus to move relative to the sliding seat. The guide groove includes a first locked position and a second locked position that are spaced along the axial direction of the accommodating space. In the locked state, the movable end is located in the first locked position, and the guide rod pulls the sliding member, so that the sliding member is limited to a position that is relatively far away from the exit/entrance port, and compresses the elastic member. In the unlocked state, the movable end is located in the second locked position, and the sliding member is ejected by the elastic member to a position closer to the exit/entrance port.

This implementation provides a specific ejection mechanism. The ejection mechanism can be locked to allow a stylus to be received and held, and the stylus is ejected by using the elastic member of the ejection mechanism.

In a possible implementation, the sliding member further includes a sleeve, and the sleeve is connected to an end of the guide plate near the exit/entrance port, and is configured to adapt the stylus.

In this implementation, the sleeve is disposed to be connected to the guide plate, so that the stylus easily transmits force to the guide plate through the sleeve, so as to drive the guide plate to move.

In a possible implementation, there is a step surface between the guide plate and the sleeve, the elastic member is a helical spring, and the elastic member is sleeved outside the guide plate, and an end of the elastic member abuts against the step surface.

In this implementation, the elastic member abuts against the step surface and is sleeved outside the guide plate, thereby reducing an overall length of the ejection mechanism.

In a possible implementation, a mounting groove is disposed on the sleeve. The sensing assembly includes a magnetic member and a Hall element, and the magnetic member is disposed in the mounting groove. The Hall element and the bracket are relatively fastened, and can sense displacement of the magnetic member.

In this implementation, the mounting groove is disposed on the sleeve to accommodate the magnetic member, and a state change of the ejection mechanism is obtained based on movement of the magnetic member with the sleeve and sensing of the Hall element. A structure is simple, and implementation is easy.

In a possible implementation, the accommodating space of the bracket includes a positioning ring groove that is spaced along an axial direction, a corresponding ring-shaped protrusion is disposed on an outer circumferential surface of the sliding seat, and the ring-shaped protrusion is adapted to a corresponding positioning groove. A connection convex lug is further disposed on a side surface of the sliding seat, and the sliding seat is fixedly connected to the bracket by using the connection convex lug.

In this implementation, positioning and mounting of the sliding seat can be easily implemented through cooperation between the positioning ring groove and the ring-shaped protrusion and connection of the connection convex lug.

According to a second aspect according to the invention, the invention also provides the following stylus receiving method. Based on the foregoing stylus receiving apparatus, this stylus receiving method includes:.

The stylus receiving method in this embodiment of this application is based on the foregoing stylus receiving apparatus, which can easily and effectively implement receiving and ejection of the stylus, ensure good hand feeling, and improve user experience.

In a possible implementation, a control system receives a state change of the ejection mechanism that is sensed by the sensing assembly, and controls, based on the corresponding state change, the coil part to be powered on or powered off.

The control system in this implementation may be although not claimed a main control system of an electronic device in which the stylus receiving apparatus is used. That is, the control of the stylus receiving apparatus for receiving a signal of the sensing assembly and controlling the coil part to be powered on/powered off is implemented by the main control system of the electronic device.

According to a third not claimed aspect, an embodiment of this application provides an electronic device, including a stylus and a device body. A held element is disposed on the stylus. The device body includes the foregoing stylus receiving apparatus, and the holding assembly can hold the held element.

According to the electronic device in this embodiment of this application, the device body of the electronic device uses the foregoing stylus receiving apparatus to receive the stylus, so that the stylus can be easily received and ejected, and good hand feeling can be ensured.

In a possible but not claimed implementation, the electronic device further includes a device power supply, configured to supply power to the coil part and/or the sensing assembly in a wired or wireless manner.

In this not claimed implementation, the electronic device can supply power to the coil part and/or the sensing assembly by using the device power supply in a wireless or wired manner, so as to implement various functions of the stylus receiving apparatus.

To describe technical solutions in embodiments of this application more clearly, the following briefly describes accompanying drawings in embodiments. It should be understood that the following accompanying drawings show only some embodiments of this application. Therefore, the following accompanying drawings should not be considered as a limitation on a scope. A person of ordinary skill in the art may still derive other related drawings from these accompanying drawings without creative efforts.

The following clearly and completely describes technical solutions in embodiments of this application with reference to accompanying drawings in embodiments of this application. Apparently, the described embodiments are only some embodiments rather than all of embodiments of this application.

It should be noted that when an element is referred to as being "fastened" to another element, it may be directly on another element, or a centered element may exist. When one element is considered to be "connected to" another element, it may be directly connected to another element, or a centered element may exist at the same time. When one element is considered to be "disposed" on another element, it may be directly disposed on another element, or a centered element may exist at the same time. The terms "vertical", "horizontal", "left", "right", and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by a person skilled in the art of this application. The terms used in the specification of this application are merely intended to describe specific implementations, and are not intended to limit this application. The term "or/and" used in the specification includes any and all combinations of one or more associated listed items.

Some implementations of this application are described in detail. If there is no conflict, the following implementations and the features in the implementations may be mutually combined.

Referring to <FIG>, this embodiment provides an electronic device <NUM>, including a stylus <NUM> and a device body <NUM>. The device body <NUM> includes a stylus receiving apparatus <NUM>, configured to receive the stylus <NUM>. When the stylus <NUM> needs to be used, the stylus <NUM> may be taken out of the stylus receiving apparatus <NUM>, as shown in <FIG>.

The electronic device <NUM> in this embodiment may be a mobile phone, a laptop computer, a tablet computer, a laptop computer accessory, a tablet computer accessory, and a mobile phone accessory and another device that needs a stylus receiving function.

The stylus receiving apparatus <NUM> may be disposed integrally in the electronic device <NUM> as a part of the device body <NUM>. Alternatively, the apparatus may be an independent product, and may be detachably attached, by using a connection structure, to the device body <NUM> that has no stylus receiving function for use.

Referring to <FIG> together, this embodiment of this application provides a stylus receiving apparatus <NUM>, including a bracket <NUM>, an ejection mechanism <NUM>, a holding assembly <NUM>, and a sensing assembly <NUM>. Referring mainly to <FIG>, the bracket <NUM> defines an accommodating space <NUM>, and the accommodating space <NUM> is provided with an exit/entrance port <NUM> for inserting the stylus <NUM>. For the bar-shaped stylus <NUM>, the accommodating space <NUM> is approximately a bar-shaped groove hole structure in which the exit/entrance port <NUM> is disposed at an end, and a cross-section adapts the stylus <NUM>, for example, is disposed as a square or a circle. The ejection mechanism <NUM> is disposed in the accommodating space <NUM>, and the ejection mechanism <NUM> can be driven to a locked state or an unlocked state by the stylus <NUM> that is inserted into the accommodating space <NUM>. In the locked state, the ejection mechanism <NUM> allows the stylus <NUM> to be received in the accommodating space <NUM>. In the unlocked state, the ejection mechanism <NUM> is capable of ejecting the stylus <NUM> from the accommodating space <NUM> (a feasible implementation in which the ejection mechanism <NUM> implements the locked state and the unlocked state is described below). The holding assembly <NUM> is configured to cooperate with the held element <NUM> (such as a magnet) on the stylus <NUM>, so as to hold the stylus <NUM>. The holding assembly <NUM> includes a magnet part <NUM> and a coil part <NUM>. The holding assembly <NUM> generates a first magnetic field when the coil part <NUM> is powered off. The holding assembly <NUM> generates a second magnetic field when the coil part <NUM> is powered on. A holding force exerted by the second magnetic field on the stylus <NUM> is smaller than a holding force exerted by the first magnetic field on the stylus <NUM>. The sensing assembly <NUM> is communicatively connected to the coil part <NUM>. The sensing assembly <NUM> senses a state change of the ejection mechanism <NUM> by sensing movement of the ejection mechanism <NUM>. When the sensing assembly <NUM> senses that the ejection mechanism <NUM> changes from an unlocked state to a locked state, the coil part <NUM> is powered off. When the sensing assembly <NUM> senses that the ejection mechanism <NUM> changes from the locked state to the unlocked state, the coil part <NUM> is powered on.

A method for using the stylus receiving apparatus <NUM> in this embodiment of this application is as follows:.

Therefore, it can be learned that the stylus receiving apparatus <NUM> in this embodiment of this application has beneficial effects of reliably holding the stylus <NUM>, pressing and taking out the stylus <NUM> with less force, better hand feeling, and better user experience.

Referring mainly to <FIG>, in this implementation, the bracket <NUM> includes a seat frame <NUM> and a cover <NUM>, and the cover <NUM> is detachably connected to the seat frame <NUM>, so as to enclose into the accommodating space <NUM>. When the cover <NUM> is detached from the seat frame <NUM>, the accommodating space <NUM> is opened. In this implementation, the detachable seat frame <NUM> and the detachable cover <NUM> are disposed, so as to facilitate operations such as disassembly/assembly and replacement of an internal structure (such as an ejection assembly) of the bracket <NUM>. A connection manner between the cover <NUM> and the seat frame <NUM> may be clamping, or a connection is implemented by using a screw. In this embodiment, the seat frame <NUM> may be include a connection lug <NUM>, configured to implement a connection to another part of the device body <NUM>.

The ejection mechanism <NUM> in this embodiment of this application may be implemented in a plurality of forms. For example, referring to <FIG> together, in this implementation, the ejection mechanism <NUM> includes a sliding seat <NUM>, a sliding member <NUM>, an elastic member <NUM>, and a guide rod <NUM>. The sliding seat <NUM> is fixedly connected to the bracket <NUM>, and is located in the accommodating space <NUM>. The sliding member <NUM> may slidably cooperate with the sliding seat <NUM>, and a sliding direction is along an axial direction of the accommodating space <NUM>; and the sliding member <NUM> includes a guide plate <NUM> with a guide groove <NUM>. The elastic member <NUM> is elastically supported between the sliding seat <NUM> and the sliding member <NUM>, and can exert an elastic force on the sliding member <NUM> in a direction toward the exit/entrance port <NUM>. The guide rod <NUM> includes a fastened end <NUM> and a movable end <NUM>. The fastened end <NUM> and the sliding seat <NUM> are relatively fastened. The movable end <NUM> can movably cooperate with the guide groove <NUM>, and can move along the guide groove <NUM> when the sliding member <NUM> is driven by the stylus <NUM> to move relative to the sliding seat <NUM>. The guide groove <NUM> includes a first locked position <NUM> and a second locked position <NUM> that are spaced along an axial direction of the accommodating space <NUM>, and the guide groove <NUM> can guide the guide rod <NUM> to move in a one-way cycle within the guide groove <NUM>. A movement path passes through the first locked position <NUM> and the second locked position <NUM>. For a specific implementation, refer to an arrangement manner of a common Push-Push mechanism. In the locked state, the movable end <NUM> is located in the first locked position <NUM>, and the guide rod <NUM> pulls the sliding member <NUM>, so that the sliding member <NUM> is limited to a position that is relatively far away from the exit/entrance port <NUM>, and compresses the elastic member <NUM>. In the unlocked state, the movable end <NUM> is located in the second locked position <NUM>, and the sliding member <NUM> is ejected by the elastic member <NUM> to a position closer to the exit/entrance port <NUM>. This implementation provides an ejection mechanism <NUM> that can be locked and unlocked by using the Push-Push mechanism. The ejection mechanism <NUM> can be easily locked to allow the stylus <NUM> to be received and held, and the stylus <NUM> is ejected by using the elastic member <NUM> of the ejection mechanism <NUM>. Optionally, the sliding member <NUM> further includes a sleeve <NUM>, and the sleeve <NUM> is connected to an end of the guide plate <NUM> near the exit/entrance port <NUM>, and is configured to adapt to the stylus <NUM>. For example, a cooperating hole <NUM> is disposed on an end of the sleeve <NUM> facing the stylus <NUM>, and an outer end of the cooperating hole <NUM> is a cone adapted to the end of the stylus <NUM>. In this implementation, the sleeve <NUM> is disposed to be connected to the guide plate <NUM>, so that the stylus <NUM> easily transmits force to the guide plate <NUM> through the sleeve <NUM>, so as to drive the guide plate <NUM> to move. Optionally, there is a step surface <NUM> between the guide plate <NUM> and the sleeve <NUM>, the elastic member <NUM> is a helical spring, and the elastic member <NUM> is sleeved outside the guide plate <NUM>, and an end of the elastic member <NUM> abuts against the step surface <NUM>. Optionally, the elastic member <NUM> abuts against the step surface <NUM>, and is disposed outside the guide plate <NUM>. In this arrangement manner, the elastic member <NUM> overlaps with the guide plate <NUM> in a longitudinal direction, thereby reducing an overall length of the ejection mechanism <NUM>.

In this implementation, optionally, a guide groove <NUM> parallel to an axial direction of the sleeve <NUM> is disposed on an outer circumference of the sleeve <NUM>, and a guide convex bar <NUM> corresponding to the guide groove <NUM> is disposed on an inner circumference of the sliding seat <NUM>, so as to implement sliding cooperation between the sleeve <NUM> and the sliding seat <NUM> through between the guide groove <NUM> and the guide convex bar <NUM>, and limit relative rotation of the sleeve <NUM> and the sliding seat <NUM> in a circumferential direction.

In this implementation, optionally, the accommodating space <NUM> of the bracket <NUM> includes a positioning ring groove <NUM> that is spaced along an axial direction, a corresponding ring-shaped protrusion <NUM> is disposed on an outer circumferential surface <NUM> of the sliding seat <NUM>, and the ring-shaped protrusion <NUM> is adapted to the corresponding positioning groove. A connection convex lug <NUM> is further disposed on a side surface of the sliding seat <NUM>, and the sliding seat <NUM> is connected to the bracket <NUM> by using the connection convex lug <NUM> that is fastened by a screw <NUM>. In this implementation, positioning and mounting of the sliding seat <NUM> can be easily implemented through cooperation between the positioning ring groove <NUM> and the ring-shaped protrusion <NUM> and connection of the connection convex lug <NUM>. For the bracket <NUM> disposed as the seat frame <NUM> and the cover <NUM>, grooves may be separately opened on the seat frame <NUM> and the cover <NUM>, so that the seat frame <NUM> and the cover <NUM> are enclosed, in a combined state, into the foregoing positioning ring groove <NUM>. In another implementation, the sliding seat <NUM> may be disposed integrally on the bracket <NUM>, so as to implement relatively fixed connection between the sliding seat <NUM> and the bracket <NUM>.

Referring to <FIG> and <FIG> together, in this embodiment, the sensing assembly <NUM> includes a magnetic member <NUM> and a Hall element <NUM>. The magnetic member <NUM> is disposed in the ejection mechanism <NUM>, and can be displaced with a change of the ejection mechanism <NUM> between a locked state and an unlocked state. The Hall element <NUM> and the bracket <NUM> are relatively fastened, and can sense displacement of the magnetic member <NUM>. In this implementation, a state change of the ejection mechanism <NUM> is determined based on movement that is of the magnetic element <NUM> with the ejection mechanism <NUM> and that is sensed by the Hall element <NUM>, and the coil part <NUM> is controlled to be powered on or powered off, so that the stylus <NUM> can be easily held firmly when being received, and a holding force when the stylus <NUM> is ejected can be easily reduced. In this implementation, optionally, a mounting groove <NUM> is disposed on the sleeve <NUM>, and the magnetic member <NUM> is disposed in the mounting groove <NUM>. The Hall element <NUM> and the bracket <NUM> are relatively fastened, and correspond to the magnetic member <NUM>, so as to sense displacement of the magnetic member <NUM>. In this implementation, the mounting groove <NUM> is disposed on the sleeve <NUM> to accommodate the magnetic member <NUM>, and a state change of the ejection mechanism <NUM> is obtained based on movement of the magnetic member <NUM> with the sleeve <NUM> and sensing of the Hall element <NUM>. A structure is simple, and implementation is easy. The Hall element <NUM> may be disposed in the accommodating space <NUM>, and enters a main control system of the electronic device <NUM> in a manner in which a lead <NUM> passes through the bracket <NUM> to outside of the accommodating space <NUM>.

Referring to <FIG>, <FIG>, and <FIG> together, there are a plurality of holding assemblies <NUM> in this embodiment, and the plurality of holding assemblies <NUM> are distributed along a circumferential direction, and are enclosed into a ring that communicates with the accommodating space <NUM> in an axial direction. As shown in the figures, there are two holding assemblies <NUM>, and the two holding assemblies <NUM> are approximately in a shape of a semicircular ring, so that the two holding assemblies <NUM> can be enclosed into an approximately complete ring, and an inner hole <NUM> enclosed by the two holding assemblies may allow the stylus <NUM> to penetrate. In this implementation, a plurality of holding assemblies <NUM> are enclosed into a ring, so that the stylus <NUM> can be held from each direction, thereby improving holding reliability. In addition, the coil part <NUM> in each direction also generate a corresponding reverse magnetic field when the coil part is powered on, to offset at least a part of a holding force of the magnet part <NUM>, so as to help eject the stylus <NUM>. In other words, the held element <NUM> of the stylus <NUM> is disposed at any position in the circumferential direction of the stylus <NUM>, and can be held by a part of the holding assembly <NUM> on the side, so that the stylus <NUM> can be easily inserted and held at any angle.

Referring mainly to <FIG>, in this implementation, the magnet part <NUM> is in a shape of an arc ring, that is, a structure of a ring that extends only in a circumferential direction, for example, a structure of a semicircular ring. The magnet part <NUM> in a shape of an arc ring has an inner circumferential surface <NUM> and an outer circumferential surface <NUM> that are radially opposite, a first axial end surface <NUM> and a second axial end surface <NUM> that are axially opposite, and a first arc end surface <NUM> and a second arc end surface <NUM> that are archwise opposite. The first axial end surface <NUM>, the first arc end surface <NUM>, the second axial end surface <NUM>, and the second arc end surface <NUM> are sequentially connected end-to-end to form a closed loop. Referring to <FIG> and <FIG> together, the coil part <NUM> is formed by winding a wire around the magnet part <NUM> along the closed loop, and the coil part <NUM> can be powered on to generate a magnetic field opposite to a magnetic field of the magnet part <NUM>. As shown in <FIG>, the magnet part <NUM> may be made of a permanent magnet. The magnet part <NUM> has a magnetic field along a radial direction, and the radially inner side is the N pole, the radially outer side is the S pole. Correspondingly, after the coil part <NUM> is powered on in the current direction I shown in the figure, a magnetic field is generated in the radial direction inside the space enclosed by the coil part <NUM>, and the radially inner side is the S pole, the radially outer side is the N pole. In this way, when the coil part <NUM> is not powered on, a first magnetic field generated by the holding assembly <NUM> is mainly represented as a magnetic field generated by the magnet part <NUM>; and when the stylus <NUM> is received in the accommodating space <NUM>, the N pole of the held element <NUM> of the stylus <NUM> corresponds to the holding assembly <NUM>, so that the stylus <NUM> is reliably held on the holding assembly <NUM> and cannot easily fall out. After the coil part <NUM> is powered on in the current direction I shown in the figure, a second magnetic field generated by the holding assembly <NUM> is mainly represented as a magnetic field generated by the magnet part <NUM> and a superposed magnetic field generated by the coil part <NUM>; and the magnetic field generated by the coil part <NUM> is mainly located on an inner side of the coil part <NUM>, namely, a region in which the magnet part <NUM> is located, and the magnetic field generated by the coil part <NUM> is opposite to the magnetic field generated by the magnet part <NUM>, so that the effects of the two magnetic fields are offset, thereby reducing the holding force for the stylus <NUM>. Certainly, a magnitude of a magnetic field of the coil part <NUM> may be controlled based on a magnitude of a powered-on current. Generally, a current can be controlled, so that a magnetic field generated by the coil part <NUM> is equal to that of the magnet part <NUM>, and the two are completely offset, and only the holding force needs to be reduced.

In this implementation, the wire used for winding into the coil part <NUM> may be a copper wire or another metal wire. The wound coil part <NUM> may further be cured outside the magnet part <NUM> by using insulation cement or another connection material, to improve integration degree of the two. In this implementation, the holding assembly <NUM> that integrates the magnet part <NUM> and the coil part <NUM> is formed by winding a wire around the magnet part <NUM> along the closed loop. In the holding assembly <NUM> formed in this way, a magnetic field distribution when the coil part <NUM> is powered on and a magnetic field distribution of the magnet part <NUM> are basically consistent with each other, and it is easy to control the overall magnetic field of the holding assembly <NUM> through inverse superposition of magnetic fields of the coil part <NUM> and the magnet part <NUM>, so as to reliably control a holding force, without affecting a magnetic field impact range after superposition due to a relatively poor magnetic field range overlap between the coil part <NUM> and the magnet part <NUM>. Optionally, the coil part <NUM> is defined between an inner circumferential surface <NUM> and an outer circumferential surface <NUM> of the arc ring. Specifically, during winding of the wire, the wire is not wound to the inner circumferential surface <NUM> and the outer circumferential surface <NUM> of the arc ring In this implementation, a winding range of the coil part <NUM> is located between the inner circumferential surface <NUM> and the outer circumferential surface <NUM> of the arc ring, so that winding of the coil part <NUM> does not increase a thickness (that is, spacing between the inner circumferential surface <NUM> and the outer circumferential surface <NUM>) of the magnet part <NUM>, thereby facilitating mounting of the holding assembly <NUM> and reducing required mounting space. For example, when the bracket <NUM> is disposed in an embedded manner, the arrangement manner may be implemented only if the bracket <NUM> has a relatively small wall thickness, and no additional space is occupied. In addition, in the holding assembly <NUM> of this structure, the coil part <NUM> does not protrude from the outer circumferential surface <NUM> of the magnet part <NUM>, and the coil part <NUM> will not be easily disconnected or leak electricity due to an external force or impact.

For an implementation when there are two holding assemblies <NUM>, one of the two holding assemblies <NUM> is connected to the seat frame <NUM>, the other is connected to the cover <NUM>, and when the cover <NUM> and the seat frame <NUM> are combined, the two holding assemblies <NUM> are enclosed into a ring that communicates with the accommodating space <NUM> in an axial direction, to allow the stylus <NUM> to penetrate. In this implementation, the two holding assemblies <NUM> are separately mounted on the seat frame <NUM> and the cover <NUM>, and are enclosed into a ring that communicates with the accommodating space <NUM>, to allow the stylus <NUM> to penetrate, and the stylus <NUM> is separately held from two sides. The holding assembly <NUM> may be integrally embedded in a position corresponding to the seat frame <NUM>/cover <NUM>, or may be connected to the seat frame <NUM>/cover <NUM> in a manner such as bonding or clamping.

In this embodiment, the held element <NUM> of the stylus <NUM> may be disposed on an outer circumference of the stylus <NUM> or inside the stylus <NUM>.

In this embodiment, the stylus receiving apparatus <NUM> includes a power supply apparatus <NUM> (refer to <FIG>), configured to supply power to the coil part <NUM> and/or the sensing assembly <NUM>. A power supply mode of the power supply apparatus <NUM> is battery power supply or wireless power supply. In this implementation, the stylus receiving apparatus <NUM> is supplied power by additionally providing a battery for the stylus receiving apparatus <NUM> or by using a device power supply of the electronic device <NUM> in a wired or wireless manner.

An embodiment of this application further provides a stylus receiving method. Based on the foregoing stylus receiving apparatus <NUM>, the stylus receiving method includes:.

The stylus receiving method in this embodiment of this application is based on the foregoing stylus receiving apparatus <NUM>, which can easily and effectively implement receiving and ejection of the stylus <NUM>, ensure good hand feeling, and improve user experience.

In a possible implementation, a control system <NUM> receives a state change of the ejection mechanism <NUM> that is sensed by the sensing assembly <NUM>, and controls, based on the corresponding state change, the coil part <NUM> to be powered on or powered off. The control system <NUM> in this implementation may be a main control system of an electronic device <NUM> in which the stylus receiving apparatus <NUM> is used. That is, the control of the stylus receiving apparatus <NUM> for receiving a signal of the sensing assembly <NUM> and controlling the coil part <NUM> to be powered on/powered off is implemented by the main control system of the electronic device <NUM>.

<FIG> is a control principle diagram of a stylus receiving apparatus <NUM> according to an embodiment of this application. Referring to <FIG>, the power supply apparatus <NUM> separately supplies power to the Hall element <NUM> and the coil part <NUM>. In addition, a control switch <NUM> controls a branch that is used by the power supply apparatus <NUM> to supply power to the coil part <NUM> to be connected or disconnected, and the control system <NUM> is communicatively connected to the Hall element <NUM> and the control switch <NUM>. With reference to the foregoing description, when in use, and the stylus <NUM> is inserted to drive the ejection mechanism <NUM> to change from the unlocked state to the locked state, the Hall element <NUM> senses the state change, and transmits a signal to the control system <NUM>; and the control system <NUM> controls the control switch <NUM> to be turned off, so that the power supply apparatus <NUM> stops supplying to the coil part <NUM>, and the holding assembly <NUM> holds the stylus <NUM>. When the stylus <NUM> is taken out, the ejection mechanism <NUM> changes from the locked state to the unlocked state, and the elastic member <NUM> of the ejection mechanism <NUM> ejects the stylus <NUM>; in this case, the Hall element <NUM> senses the state change, and transmits a signal to the control system <NUM>; and the control system <NUM> controls the control switch <NUM> to be turned on, so that the power supply apparatus <NUM> supplies power to the coil part <NUM>, and a magnetic field generated by the coil part <NUM> offsets at least a part of the magnetic field of the magnet part <NUM>,the holding force exerted by the holding assembly <NUM> on the stylus <NUM> is reduced, and the elastic member <NUM> only needs less elasticity to normally eject the stylus <NUM>.

In another implementation, any other suitable method may be used for controlling the coil part <NUM> to be powered on/powered off.

Claim 1:
A stylus receiving apparatus (<NUM>), comprising:
a bracket (<NUM>), wherein the bracket (<NUM>) defines an accommodating space (<NUM>), and the accommodating space (<NUM>) has an exit/entrance port (<NUM>) for inserting a stylus (<NUM>);
an ejection mechanism (<NUM>), wherein the ejection mechanism (<NUM>) is disposed in the accommodating space (<NUM>), and the ejection mechanism (<NUM>) can be driven to a locked state or an unlocked state by the stylus (<NUM>) that is inserted into the accommodating space (<NUM>); in the locked state, the ejection mechanism (<NUM>) allows the stylus (<NUM>) to be received in the accommodating space (<NUM>); and in the unlocked state, the ejection mechanism (<NUM>) is capable of ejecting the stylus (<NUM>) from the accommodating space (<NUM>);
a holding assembly (<NUM>), configured to cooperate with a held element (<NUM>) on the stylus (<NUM>), so as to hold the stylus (<NUM>); wherein the holding assembly (<NUM>) comprises a magnet part (<NUM>) and a coil part (<NUM>); the holding assembly (<NUM>) generates a first magnetic field when the coil part (<NUM>) is powered off; the holding assembly (<NUM>) generates a second magnetic field when the coil part (<NUM>) is powered on; and a holding force exerted by the second magnetic field on the stylus (<NUM>) is smaller than a holding force exerted by the first magnetic field on the stylus (<NUM>); and
a sensing assembly (<NUM>), wherein the sensing assembly (<NUM>) is communicatively connected to the coil part (<NUM>); the sensing assembly senses a state change of the ejection mechanism (<NUM>) by sensing movement of the ejection mechanism (<NUM>), and the coil part (<NUM>) is powered off when the sensing assembly senses that the ejection mechanism changes from an unlocked state to a locked state; and the coil part (<NUM>) is powered on when the sensing assembly senses that the ejection mechanism changes from the locked state to the unlocked state.