CN112701743B

CN112701743B - Magnetic attraction mechanism and wireless charging seat

Info

Publication number: CN112701743B
Application number: CN202011383058.0A
Authority: CN
Inventors: 江移超
Original assignee: Powerqi Technology Co ltd
Current assignee: Powerqi Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-12-01
Publication date: 2021-10-01
Anticipated expiration: 2040-12-01
Also published as: CN112701743A

Abstract

The application provides a mechanism and wireless charging seat are inhaled to magnetism, and magnetism is inhaled the mechanism and is included: the middle part of the bracket is provided with an adapting point, one end face of the bracket is provided with a plurality of mounting positions, and the mounting positions are arranged around the adapting point; the first magnetism isolating ring is arranged on the bracket, is arranged around the adaptation position and is spaced between the adaptation position and the installation position; and, a plurality of magnets; the magnets are arranged in the installation positions respectively and are magnetically attracted with the first magnetism isolating ring. Magnetism in this application inhale mechanism and wireless charging seat, through adopting first at a distance from the magnetic ring, can reduce the magnetism line of feeling that the magnet passed wireless charging coil, be favorable to reducing the interference that magnet magnetism produced wireless charging coil, the energy loss when being favorable to reducing wireless charging coil and charging reduces calorific capacity, improves the charge efficiency of wireless charging coil.

Description

Magnetic attraction mechanism and wireless charging seat

Technical Field

This application belongs to wireless charging device technical field, and more specifically says, relates to a mechanism and wireless charging seat are inhaled to magnetism.

Background

At present, wireless charger has been comparatively common on the market, and on the wireless charger was fixed in to the convenience of electronic equipment, be provided with magnetism on the wireless charger of current and inhale the ring, the mode that utilizes magnetism to inhale will treat that charging equipment is fixed. The magnetic suction ring comprises a ring-shaped piece and a plurality of magnets, wherein the magnets are arc-shaped, and the magnets are spliced along the ring-shaped piece to form an annular structure. When the magnetic ring is produced, the non-magnetic material is required to be manufactured into an arc-shaped structure corresponding to each magnet, namely the non-magnetic magnet is manufactured; then, splicing and fixing the magnets on the annular parts to form an annular structure; and finally, magnetizing the magnets fixed on the annular piece to ensure that the magnetic material has magnetism, thereby forming a magnetic attraction ring spliced by a plurality of magnets. When the magnet is fixed with the annular piece, it is fixed with the viscose usually to need, leads to the magnet to arrange and splice comparatively inconvenient, influences the assembly efficiency of ring of inhaling. Moreover, because the magnet is arc-shaped and needs to be matched with a magnetic ring on the electronic equipment, the magnet needs to be produced independently, the production cost is increased, and the production efficiency of the magnetic ring is influenced.

The ring adopts the magnet to adsorb the cell-phone to current magnetism, and when wireless charger charges, wireless charging coil in the wireless charger can produce the magnetic field of change, and there is certain overlap in the magnetic field of ring with magnetism in the magnetic field of wireless charging coil, leads to the magnetic field of wireless charging coil and the magnetic field mutual interference of magnetism ring of inhaling, influences the charge efficiency of wireless charger.

Disclosure of Invention

An object of the embodiment of the application is to provide a mechanism is inhaled to magnetism to there is certain overlapping in the magnetic field of wireless charging coil and the magnetic field of inhaling the ring among the wireless charger of solving the wireless charger that exists among the prior art, influences the technical problem of the charge efficiency of wireless charger.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a magnetic attraction mechanism comprising:

the middle part of the bracket is provided with an adapting point, one end face of the bracket is provided with a plurality of mounting positions, and the mounting positions are arranged around the adapting point;

the first magnetism isolating ring is arranged on the bracket, is arranged around the adaptation position and is spaced between the adaptation position and the installation position; and the number of the first and second groups,

a plurality of magnets;

the magnets are arranged in the installation positions respectively and are magnetically attracted with the first magnetism isolating ring.

In one embodiment, two magnets which are fixed by mutual magnetic attraction are arranged in the mounting position and are arranged along the radial direction of the first magnetism isolating ring.

In one embodiment, the magnetic poles of the magnets are respectively located at two ends of the magnets along the axial direction of the first magnetism isolating ring, the arrangement direction of the magnetic poles of the magnets at one side of each mounting position close to the first magnetism isolating ring is the same, and the magnetic poles of the two magnets at each mounting position are opposite in direction.

In one embodiment, a plurality of the mounting sites are arranged at intervals; on the circumference of a plurality of the installation positions: the ratio of the arc length between two adjacent mounting positions to the arc length corresponding to each mounting position ranges from 0.5 to 5.

Optionally, the magnet is of a rectangular structure.

Optionally, the bracket is a plastic part;

optionally, the stent is annular or polygonal.

In one embodiment, the magnetic attraction mechanism further comprises a second magnetism isolating ring arranged at the other end of the support, and the magnet is magnetically attracted with the second magnetism isolating ring.

In one embodiment, the mounting locations are through holes or slots that extend through the bracket.

Optionally, a central hole or a central groove is formed in the middle of the bracket, and the central hole or the central groove forms the adapting position

Optionally, the end face of the other end of the bracket forms the fitting bit in the portion inside the first magnetic isolating ring.

The embodiment of the application further provides a wireless charging seat, including casing, wireless charging coil and install in circuit board in the casing, wireless charging coil with the circuit board electricity is connected, wireless charging seat still includes the magnetism mechanism of inhaling in any above-mentioned embodiment, the support is fixed in on the casing, wireless charging coil install in the fitting bit.

In one embodiment, a magnetism isolating plate for supporting the wireless charging coil is further arranged in the shell, and the wireless charging coil and the circuit board are respectively located on two sides of the magnetism isolating plate.

In one embodiment, an elastic pad is further arranged in the shell, the elastic pad is positioned on one side of the magnetism isolating plate close to the circuit board, and the elastic pad is arranged along the circumferential direction of the circuit board.

The application provides a magnetism inhale mechanism and wireless charging seat's beneficial effect lies in: compared with the prior art, the mechanism is inhaled to magnetism of this application adopts a plurality of magnets to set up around the adaptation position, can make to wait that battery charging outfit and magnetism inhale the mechanism and adsorb stably, and wireless charging coil is located first at a distance from the magnetic ring inboard, is favorable to wireless charging coil accurate counterpoint. After the magnet is installed in the installation position, the magnet is close to the magnetism line of feeling of adaptation position one side and can separates the magnetic ring skew to first to can reduce the magnetism line of feeling that the magnet passed wireless charging coil, be favorable to reducing the interference that the magnet magnetism produced wireless charging coil, be favorable to reducing the energy loss when wireless charging coil charges, reduce calorific capacity, improve the charge efficiency of wireless charging coil.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic perspective view of a wireless charging cradle according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the wireless charging cradle of FIG. 1;

FIG. 3 is a first perspective view of the magnetic attraction mechanism shown in FIG. 2;

FIG. 4 is a second perspective view of the magnetic attraction mechanism shown in FIG. 2;

FIG. 5 is an exploded view of the magnetic attachment mechanism of FIG. 3;

FIG. 6 is a perspective view of the bracket of FIG. 5;

FIG. 7 is a schematic view of the magnetic pole of the magnetic attraction mechanism in FIG. 2;

fig. 8 is a schematic perspective view of a first magnetism isolating ring according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of the magnetic field configuration of comparative example one;

fig. 10 is a schematic view of a partial structure of a magnetic field according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1-a shell; 11-a cover body; 12-a lower shell; 13-an elastic pad;

2-a magnetic attraction mechanism; 21-a scaffold; 210-an aptamer; 211-a mounting location; 212-card slot; 213-forming groove; 22-a magnet; 23-a first magnetism isolating ring; 24-a second magnetism isolating ring; 240-notch;

31-a wireless charging coil; 32-a magnetic shield; 33-circuit board.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, fig. 2 and fig. 3 together, a magnetic attraction mechanism 2 according to an embodiment of the present application will now be described. The magnetic attraction mechanism 2 comprises a support 21, a first magnetism isolating ring 23 and a plurality of magnets 22, wherein an adaptation ring 210 is arranged in the middle of the support 21, and the adaptation ring 210 is used for installing the wireless charging coil 31. Referring to fig. 5, a plurality of mounting positions 211 are disposed on one end surface of the support 21, and the mounting positions 211 are disposed around the fitting position 210. The first magnetism isolating ring 23 is disposed on the bracket 21, the first magnetism isolating ring 23 is disposed around the fitting site 210, and the first magnetism isolating ring 23 is disposed between the fitting site 210 and the mounting site 211 at an interval. The plurality of magnets 22 are used for attracting the outer magnetic ring at one end of the bracket 21, i.e. the outer magnetic ring is attracted at one end of the bracket 21 close to the magnets 22. Each mounting position 211 is provided with a magnet 22, and each magnet 22 is magnetically attracted with the first magnetism isolating ring 23. The external magnetic ring can be a magnetic ring arranged inside a mobile phone, a tablet personal computer and the like, or a magnetic ring arranged on the protective sleeve, and the equipment for installing the external magnetic ring is not limited uniquely.

Through a plurality of magnets 22 around fitting bit 210 setting in this application, can make to treat charging device and magnetism inhale mechanism 2 and adsorb stably, wireless charging coil 31 is located first magnetic isolation ring 23 inboard, is favorable to wireless charging coil 31 accurate counterpoint. Referring to fig. 9 and 10, after the magnet 22 is mounted on the mounting location 211, the magnetic induction line on the side of the magnet 22 close to the fitting location 210 can be offset to the first magnetism isolating ring 23, so that the magnetic induction line of the magnet 22 passing through the wireless charging coil 31 can be reduced, interference of the magnetic field of the magnet 22 on the wireless charging coil 31 can be reduced, energy loss during charging of the wireless charging coil 31 can be reduced, heat generation can be reduced, and charging efficiency of the wireless charging coil can be improved. The first magnetism isolating ring 23 can also prevent the magnet 22 from being influenced by the magnetic field of the wireless charging coil 31, and the magnetic stability of the magnet 22 is guaranteed.

In the embodiment of the present application, the first magnetism isolating ring 23 is made of a magnetic material, and the magnetic induction lines of the magnet 22 can be guided to pass through the first magnetism isolating ring 23 by adopting the magnetic material, so that the magnetic induction lines of the magnet 22 are shifted into the first magnetism isolating ring 23, and the magnetic flux of the magnetic field of the magnet 22 passing through the wireless charging coil 31 is reduced.

Optionally, the first magnetism isolating ring 23 is made of soft magnetic material, and the magnetic flux of the soft magnetic material is relatively large, which is beneficial to reducing the magnetic flux of the magnetic field of the magnet 22 passing through the proper position; the thickness of the first magnetism isolating ring 23 is favorably reduced, and the eddy current in the first magnetism isolating ring 23 is reduced when the wireless charging coil is charged. By adopting the soft magnetic material, the first magnetism isolating ring 23 can be prevented from being magnetized to generate remanence in the magnetic field of the magnet 22 or the wireless charging coil 31, and the interference of the magnetic field generated by the first magnetism isolating ring 23 and the wireless charging coil 31 or the magnet 22 after the first magnetism isolating ring 23 is magnetized for a long time can be prevented, so that the magnetic field intensity of the magnet 22 and the charging efficiency of the wireless charging coil can be guaranteed. The first magnetism isolating ring 23 has no magnetism, and the first magnetism isolating ring 23 is installed without considering the polarity of a magnetic field, so that the first magnetism isolating ring 23 is convenient to process and install. Of course, the first magnetism isolating ring can also adopt a hard magnetic material or a rectangular magnetic material and the like.

Optionally, the first magnetism isolating ring 23 is a silicon steel ring, and the silicon steel ring is adopted, so that after the magnet 22 is installed, the magnet 22 cannot be magnetized to generate magnetism, and the magnetic strength of the magnet 22 is guaranteed; on the other hand, the processing is convenient, the price is low, and the production cost is favorably reduced.

In an embodiment of the present application, please refer to fig. 3 to 5, the first magnetism isolating ring 23 is cylindrical, and a cylindrical structure is adopted to separate the magnet from the wireless charging coil, which is beneficial to reducing magnetic flux leakage.

In an embodiment of the present application, please refer to fig. 3 to 5, two magnets 22 are disposed in the mounting position 211, the two magnets 22 are magnetically fixed to each other, and the two magnets 22 are arranged along a radial direction of the first magnetism isolating ring 23. The use of two magnets 22 can be matched to an external magnetic ring to enhance the strength of the magnetic force. Further, on the side close to the fitting site 210: the magnetic induction lines of the magnets 22 close to the first magnetism isolating ring 23 are shifted from the adapting positions 210 to the first magnetism isolating ring 23, and the magnetic induction lines of the magnets 22 far away from the first magnetism isolating ring 23 are shifted to the magnets 22 close to the first magnetism isolating ring 23, so that the magnetic induction lines of the two magnets 22 close to one side of the first magnetism isolating ring 23 are shifted towards the outer side of the adapting positions 210, and the magnetic induction lines of the magnets 22 are favorably concentrated at the outer side of the adapting positions 210. Of course, in other embodiments, one magnet may be fixed in each mounting location, or multiple pairs of magnets may be fixed in each mounting location.

Further, referring to fig. 4 and 7, the magnetic poles of the magnets 22 are respectively located at two ends of the magnet 22 along the axial direction of the first magnetism isolating ring 23, the magnetic poles of the two magnets 22 of each mounting position 211 are opposite in direction, and the arrangement direction of the magnetic poles of the magnets 22 close to the fitting position 210 in each mounting position 211 is the same. That is, the magnetic induction line direction inside the magnet 22 is perpendicular to the axial direction of the first magnetism isolating ring 23, the direction of the magnet 22 on the side close to the fitting bit 210 in all the mounting bits 211 is the same, the direction of the magnet 22 on the side far from the fitting bit 210 in all the mounting bits 211 is the same, and the magnetic pole directions of the two magnets 22 in the same mounting bit 211 are opposite. Two magnetic poles of the external magnetic ring can be arranged along the radial direction of the external magnetic ring, when the magnetic attraction mechanism 2 adsorbs the external magnetic ring, the distance between the magnetic pole of the magnet 22 and the external magnetic ring is the closest, which is beneficial to enhancing the stability when the magnetic attraction mechanism 2 adsorbs the external magnetic ring. When the magnetic attraction mechanism 2 is attracted with the external magnetic ring, the two magnets 22 in the same mounting position 211 can form a closed magnetic circuit with the external magnetic ring, so that the magnetic induction lines at one end of the magnets 22 close to the external magnetic ring are offset towards the external magnetic ring, and the magnetic induction lines diverged by the magnets 22 along the radial direction of the first magnetism isolating ring 23 are concentrated at the end part of the magnets 22, which is beneficial to reducing the magnetic flux of the magnets 22 penetrating through the coil in the equipment to be charged.

In one embodiment of the present application, referring to fig. 4 and 7, the plurality of mounting locations 211 are spaced apart to reduce interference between the magnets 22 mounted between adjacent mounting locations 211. When the magnetic suction mechanism 2 is assembled, the first magnetism isolating ring 23 and the support 21 can be fixed firstly, because the support 21 can not be magnetized, the magnet 22 can adsorb the first magnetism isolating ring 23, and the magnet 22 can be fixed at the corresponding installation position 211 by utilizing the magnetic suction effect between the first magnetism isolating ring 23 and the magnet 22, so that the installation of the magnet 22 is facilitated, and the production efficiency is improved. The existing magnet assembly can be adopted, the magnet does not need to be fixed with the support after being cut into an arc shape and then magnetized, the magnet forming and magnetizing steps are omitted, the magnet 22 is more convenient to assemble, the cost is reduced, and the production efficiency is improved. Of course, in other embodiments, multiple mounting sites may be connected in a ring.

Further, referring to fig. 4 and 7, on the circumference where the plurality of mounting positions 211 are located: the ratio range of the arc length between two adjacent mounting positions 211 to the arc length corresponding to each mounting position 211 is 0.5-5, so that the magnetic force of the magnetic attraction mechanism 2 can be ensured, the magnetic attraction mechanism 2 can be tightly attracted with an external magnetic ring, the number of the magnets 22 can be reduced, and the cost is saved. Meanwhile, mutual repulsion between the magnets 22 in two adjacent mounting positions 211 is reduced, assembly of the magnets 22 is facilitated, interference of the magnets 22 in two adjacent mounting positions 211 is reduced, and magnetic induction lines are prevented from radially shifting towards the inside of the adaptation positions 210 along the first magnetism isolating ring 23 due to the repulsion of the magnets 22 in two adjacent mounting positions 211.

Alternatively, on the circumference where the plurality of mounting locations 211 are located: the central angle between two adjacent mounting positions 211 ranges from 3 degrees to 60 degrees, the central angle corresponding to each magnet 22 ranges from 3 degrees to 45 degrees, and the number of the mounting positions 211 ranges from 3 degrees to 36 degrees, so that the magnetic attraction mechanism 2 can be ensured to be stressed evenly, the magnetic attraction strength can be ensured, and the interference of the magnets 22 in the adjacent mounting positions 211 can be reduced. The central angle between two adjacent mounting positions 211 can be 10 °, 20 °, 30 ° or 40 °, etc., the central angle corresponding to each magnet 22 can be 5 °, 10 °, 20 °, 30 ° or 40 °, etc., and the number of the mounting positions 211 can be 5, 8, 10, 15 or 24, etc., so that suitable design data of the magnetic attraction mechanism 2 can be selected according to the size of the coil and the external magnetic ring on the corresponding device to be charged, etc.

Alternatively, the interval between two adjacent mounting positions 211 is greater than or equal to 1mm, and the interval between two adjacent mounting positions 211 may be 1.5mm, 2mm or 5mm, so that the interference between the magnets 22 in two adjacent mounting positions 211 can be reduced.

In an embodiment of the present application, referring to fig. 5 and 7, the magnet 22 is a rectangular structure, and the rectangular structure is convenient to process, low in cost and convenient to assemble. Moreover, the existing neodymium magnets in the market can be selected, so that the production cost is favorably reduced.

Alternatively, the magnet 22 is a neodymium magnet, which is strong and stable.

In one embodiment of the present application, the support 21 is an insulator, and the support 21 is made of a non-magnetic material, so that a loop current is prevented from being formed in the support 21, a magnetic field or an eddy current is prevented from being generated in the support 21, and the support 21 is prevented from interfering with the magnetism of the magnet 22 or interfering with the wireless charging coil 31.

Optionally, the bracket 21 is a plastic part, the plastic part has certain flexibility, so that the magnet 22 is conveniently mounted and fixed, and the flexibility of the plastic part can be used for realizing interference fit of the magnet 22 so as to ensure stability of the magnet 22; the plastic part can be directly molded by injection molding, is convenient to process, and is beneficial to improving the production efficiency and reducing the production cost. Moreover, the plastic part has no magnetism, which is beneficial to separating the magnet 22 from the outside and avoiding the periphery of the bracket 21 from adsorbing the external magnetic part; the plastic part is unfavorable for heat conduction, and the influence of generating heat when wireless charging coil 31 charges magnet 22 magnetic field intensity can be avoided. Of course, the bracket may be made of silicone or plastic.

In one embodiment of the present application, referring to fig. 3, 4 and 7, the support frame 21 is circular, and the circular structure is favorable for reducing the cross-sectional area of the support frame 21 and reducing the size of the support frame 21. The cross section of the bracket 21 can also adopt a polygonal structure, such as a quadrilateral, a hexagon or an octagon; the cross section of the first magnetism isolating ring can be in a circular structure or a polygonal structure, such as a quadrangle, a hexagon or an octagon.

In an embodiment of the present application, referring to fig. 3 to fig. 5, the magnetic attraction mechanism 2 further includes a second magnetism isolating ring 24, the second magnetism isolating ring 24 is disposed at the other end of the bracket 21, and the magnet 22 and the second magnetism isolating ring 24 are magnetically attracted. Through the second magnetism isolating ring 24, the magnetic induction line at one end of the magnet 22 close to the second magnetism isolating ring 24 is close to the second magnetism isolating ring 24, leakage of a magnetic field at one end of the magnet 22 close to the second magnetism isolating ring 24 is reduced, interference of the magnet 22 to an external magnetic part is reduced, and reduction of magnetic force of the magnet 22 caused by magnetization of the magnet 22 and the external magnetic part is prevented. Moreover, the second magnetism isolating ring can also play a role in facilitating the fixation of the magnet.

Optionally, referring to fig. 5, the second magnetism isolating ring 24 and the first magnetism isolating ring 23 may be two independent parts, or may be an integral structure. Referring to fig. 8, the first magnetism isolating ring may be composed of a plurality of magnetism isolating plates in an annular array, or the first magnetism isolating ring may be an integrated structure. The second magnetism isolating ring can be composed of a plurality of magnetism isolating sheets in an annular array, and the second magnetism isolating ring 24 can also be of an integrated structure.

In the embodiment of the present application, the second magnetism isolating ring 24 is made of a magnetic material, and the magnetic induction lines are changed in direction by the second magnetism isolating ring 24 at the end of the magnet 22 close to the second magnetism isolating ring 24, so that the magnetic induction lines are shifted toward the second magnetism isolating ring 24 and communicated with the magnetic induction lines of the adjacent magnet 22 through the second magnetism isolating ring 24, and the magnetic flux of the magnetic field of the magnet 22 passing through the wireless charging coil 31 is further reduced.

Optionally, the second magnetism isolating ring 24 is made of soft magnetic material, and the magnetic flux of the soft magnetic material is larger, which is beneficial to reduce the magnetic flux of the magnetic field of the magnet passing through the adaptation bit 210. By adopting the soft magnetic material, the second magnetism isolating ring 24 can be prevented from being magnetized to generate remanence in the magnetic field of the magnet 22 or the wireless charging coil 31, and the interference of the magnetic field generated by the second magnetism isolating ring 24 and the wireless charging coil 31 or the magnet 22 after the second magnetism isolating ring 24 is magnetized for a long time can be prevented, so that the magnetic field intensity of the magnet 22 and the charging efficiency of the wireless charging coil 31 can be guaranteed. The second magnetism isolating ring 24 has no magnetism, and the second magnetism isolating ring 24 is installed without considering the polarity of a magnetic field, so that the second magnetism isolating ring 24 is convenient to process and install. Of course, the first magnetism isolating ring can also adopt a hard magnetic material or a rectangular magnetic material and the like.

Optionally, the second magnetism isolating ring 24 is a silicon steel ring, and the silicon steel ring is adopted, so that after the magnet 22 is installed, the magnet 22 cannot be magnetized to generate magnetism, and the magnetic strength of the magnet 22 is guaranteed; on the other hand, the processing is convenient, the price is low, and the production cost is favorably reduced.

In an embodiment of the present application, the second magnetism isolating ring 24 is a sheet structure, the end surface of the magnet 22 is attracted to the surface of the second magnetism isolating ring 24, the sheet structure is convenient to process, the second magnetism isolating ring 24 is convenient to attach to the end surface of the bracket 21, the occupied thickness is small, the influence on the magnetic field strength of the magnet 22 is small, and the magnetic induction lines can be concentrated on the end surface of the magnet 22.

In an embodiment of the present application, please refer to fig. 5 and fig. 6, the mounting position 211 is a through hole penetrating through the bracket 21, an opening of the through hole at the other end of the bracket 21 is respectively used for the magnetic attraction and fixation of the corresponding surfaces of the first magnetism isolating ring 23 and the second magnetism isolating ring 24 and the magnet 22, the magnet 22 can be attracted to the second magnetism isolating ring 24 and the second magnetism isolating ring 24 by using the through hole, so as to reduce the thickness of the magnetic attraction mechanism 2, and reduce the leaked magnetic induction lines, so as to reduce the loss of the wireless charging coil 31 during charging. The mounting position 211 may also be a slot, the slot penetrates through the bracket 21, and the slot is located at a side of the bracket 21 close to the fitting position 210, so that the first magnetism isolating ring 23 and the second magnetism isolating ring 24 can be magnetically fixed with the magnet 22 at the same time.

In one embodiment of the present application, the central portion of the support 21 is formed with a central hole, which forms the fitting site 210. Can hold wireless charging coil 31 through the centre bore, the counterpoint of wireless charging coil 31 of being convenient for, and can reduce wireless charging coil to the distance of treating battery charging outfit, be favorable to improving wireless charging coil 31's charge efficiency.

In another embodiment of the present application, the middle portion of the bracket may also be provided with a central groove, and the central groove forms a fitting point. Thus, the wireless charging coil 31 can be aligned through the central slot. Of course, in other embodiments, the portion of the end surface of the other end of the holder located in the first magnetic isolation ring forms a fitting location, and the wireless charging coil 31 may be attached to the end surface of the holder without forming a central hole or a central groove on the holder, so as to control the installation position of the wireless charging coil 31.

Optionally, referring to fig. 6, the bracket 21 is provided with a forming groove 213, and the forming groove 213 is located between two adjacent mounting positions 211. Through the forming groove 213, the side wall of the through hole can form a thin-wall structure, which is beneficial to the deformation of the inner wall of the through hole, the processing precision of the installation position 211 is reduced, and the assembly and the fixation of the magnet 22 are facilitated. Also, the molding groove 213 facilitates heat dissipation from the magnet 22.

Optionally, the bracket 21 includes an annular plate, a protruding ring and a plurality of sets of side plates, the protruding ring extends from the outer periphery of the annular plate toward the side near the second magnetism isolating ring 24. The mounting position 211 penetrates through the annular plate, the mounting position 211 is located between the convex ring and the first magnetism isolating ring 23, when the magnet 22 is placed into the mounting position 211 through the through hole, one surface, close to the first magnetism isolating ring 23, of the magnet 22 is adsorbed on the first magnetism isolating ring 23, the convex ring stops at one surface, far away from the first magnetism isolating ring 23, of the magnet 22, so that the distance between the first magnetism isolating ring 23 and the magnet 22 is reduced, magnetic leakage is prevented favorably, and the assembly stability of the magnet 22 can be guaranteed.

Optionally, the bracket 21 further includes a plurality of side plates, the side plates form side walls of the mounting positions 211, the side plates extend from the protruding rings to the first magnetism isolating ring 23, two corresponding side plates of each mounting position and the protruding rings form through grooves, the through grooves penetrate through the annular plate, and the mounting positions 211 are formed. The penetrating groove is adopted, so that the magnet 22 can be attracted and fixed on the surface of the first magnetism isolating ring 23, and the stability of the magnet 22 in the installation position 211 can be kept. And the support 21 has certain flexibility, is favorable to the annular plate to be attached to the casing tightly, is favorable to the assembly and the heat dissipation of magnet 22, and can save material. Still be equipped with the connecting plate between two adjacent connection positions, be located two installation positions 211 and two adjacent curb plates link to each other with the both ends of connecting plate respectively. The connecting plate can reinforce the structural strength of the bracket 21 after the magnets are installed.

Optionally, the annular plate extends to one side of the side plate close to the central hole, one end of the first magnetism isolating ring 23 abuts against the annular plate, the other end of the first magnetism isolating ring 23 extends to the second magnetism isolating ring 24, and the penetrating groove penetrates through the annular plate to form a penetrating hole, so that the annular plate can play a positioning role through the edge of the annular plate and the connecting plate, and the first magnetism isolating ring 23 can be installed conveniently; and the magnetic leakage of the first magnetism isolating ring 23 close to one end of the second magnetism isolating ring 24 can be reduced.

The embodiment of the present application further provides a wireless charging base, please refer to fig. 1 to 3, the wireless charging base includes a housing 1, a wireless charging coil 31 and a circuit board 33, the wireless charging coil 31 is electrically connected to the circuit board 33, and the circuit board 33 is installed in the housing 1. The wireless charging stand further comprises a magnetic attraction mechanism 2 in any of the above embodiments, the bracket 21 is fixed on the housing 1, and the wireless charging coil 31 is mounted on the fitting bit 210. Through adopting magnetism to inhale mechanism 2 and can be fixed with the equipment actuation of waiting to charge to wireless charging coil 31 aligns and is fixed with the position of waiting to charge equipment. Moreover, the interference of the magnet 22 on the wireless charging coil 31 is reduced, and the energy consumption is reduced; the manufacturing process of the wireless charging seat can be simplified, the production cost is reduced, and the production efficiency is improved.

Optionally, referring to fig. 2, a magnetic shield 32 is further disposed in the housing 1, the magnetic shield 32 supports the wireless charging coil 31, and the wireless charging coil 31 and the circuit board 33 are respectively located on two sides of the magnetic shield 32. Adopt magnetism trap 32 can reduce the leakage in magnetic field when wireless charging coil 31 charges, improve wireless charging coil 31's charge efficiency, reduce the influence of wireless charging coil 31 magnetic field to the outside.

Optionally, referring to fig. 2, an elastic pad 13 is further disposed in the housing 1, the elastic pad 13 is located on a side of the magnetic isolation plate 32 close to the circuit board 33, and the elastic pad 13 is disposed along a circumferential direction of the circuit board 33. Adopt cushion 13 can push up magnetism shield 32 and drive wireless charging coil 31 and support and hold on 1 inner wall of casing to the stability of guarantee magnetism shield 32 position is favorable to reducing the wireless charging seat when charging, and wireless charging coil 31 and the vertical distance of treating between the battery charging outfit reduce the energy loss when wireless charging coil 31 charges.

Optionally, the elastic pad 13 is a foam pad. Because the elastic pad 13 has ensured wireless charging coil 31 and magnetic shield 32 position stability, can avoid wireless charging coil 31 or magnetic shield 32 position to remove and lead to the energy loss increase that interference caused between magnet 22 and the wireless charging coil 31.

Optionally, referring to fig. 2, the housing 1 includes a lower shell 12 and a cover 11, the cover 11 covers the lower shell 12, and the cover 11 is adapted to a product to be charged. Mechanism 2 and wireless charging coil 31 paste tight lid 11 internal surface are inhaled to magnetism, are favorable to strengthening wireless charging seat and the stability of waiting the battery charging outfit actuation, reduce the energy loss among the wireless charging process. The wireless charging stand further comprises a connecting wire, the connecting wire is used for being connected with an external power supply, and the connecting wire penetrates through the lower shell 12 and is connected with the circuit board 33. A clamping block is arranged at one end of the connecting wire extending into the shell 1, a clamping groove 212 is formed in the bracket 21, and the clamping groove 212 is in clamping fit with the clamping block; the second magnetism isolating ring 24 is provided with a notch 240, and the notch 240 can be used for placing the end of the connecting wire in the slot 212, so that the second magnetism isolating ring 24 is prevented from obstructing the installation of the end of the connecting wire. This can strengthen the stability between wireless charging coil 31, support 21, casing 1 and the wire, prevent that the wire receives the position relative movement of wireless charging coil 31 and support 21 when pulling force.

Electric quantity/time	0h	1h	2h	3h	4h
						Example one	0	16％	34％	51％	73％
Comparative example 1	0	13％	22％	23％	23％

The table above shows data of the electric quantity and time when the mobile phone is charged in the first embodiment and the first comparative embodiment, respectively, where: the first embodiment is a wireless charging seat with a first magnetism isolating ring; the first comparison example is a wireless charging seat without a first magnetism isolating ring. As can be seen from the data in the table, the charging efficiency of example one is significantly higher than that of comparative example one. With the increase of the charging time of the mobile phone, the increasing speed of the electric quantity of the mobile phone in the first example is gradually slowed down, and the electric quantity of the mobile phone is basically not increased after reaching 23 percent; while the first embodiment is capable of maintaining a higher charging speed. Therefore, after the first magnetic ring is added, the interference of the magnet on the wireless charging coil can be obviously reduced, the wireless charging efficiency can be obviously improved, and the charging device to be charged is favorably charged to be saturated in electric quantity.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Mechanism is inhaled to magnetism, its characterized in that includes:

the middle of the support is provided with an adaptation position, the adaptation position is used for installing a wireless charging coil, one end face of the support is provided with a plurality of installation positions, and the installation positions are arranged around the adaptation position;

a plurality of magnets;

the magnets are respectively arranged in the installation positions and are magnetically attracted with the first magnetism isolating ring;

two magnets which are fixed in a mutually magnetic attraction manner are arranged in the mounting position and are arranged along the radial direction of the first magnetism isolating ring;

the magnetic poles of the magnets are respectively positioned at two ends of the magnets along the axial direction of the first magnetism isolating ring, the arrangement directions of the magnetic poles of the magnets close to one side of the first magnetism isolating ring in each mounting position are the same, and the magnetic pole directions of the two magnets in each mounting position are opposite, so that the magnetic induction of the magnets dispersed along the radial direction of the first magnetism isolating ring is concentrated at the end parts of the magnets.

2. The magnetic attraction mechanism of claim 1, wherein: a plurality of the installation positions are arranged at intervals; on the circumference of a plurality of the installation positions: the ratio of the arc length between two adjacent mounting positions to the arc length corresponding to each mounting position ranges from 0.5 to 5.

3. The magnetic attraction mechanism of claim 1, wherein: the magnet is of a rectangular structure;

and/or the bracket is a plastic part;

and/or the stent is annular or polygonal.

4. The magnetic attraction mechanism of claim 1, wherein: the magnetic attraction mechanism further comprises a second magnetism isolating ring arranged at the other end of the support, and the magnet is magnetically attracted with the second magnetism isolating ring.

5. A mechanism according to any one of claims 1 to 4, wherein: the mounting position is a through hole or a groove penetrating through the support.

6. A mechanism according to any one of claims 1 to 4, wherein: the middle part of the bracket is provided with a central hole or a central groove, and the central hole or the central groove forms the fitting bit; or the end face of the other end of the bracket forms the fitting bit at the part in the first magnetic isolating ring.

7. Wireless charging seat, including casing, wireless charging coil and install in circuit board in the casing, wireless charging coil with its characterized in that is connected to the circuit board electricity: the wireless charging stand further comprises a magnetic attraction mechanism according to any one of claims 1-6, the bracket is fixed on the housing, and the wireless charging coil is mounted on the fitting position.

8. The wireless charging cradle of claim 7, wherein: still be equipped with the support in the casing the magnetism shield of wireless charging coil, wireless charging coil with the circuit board is located respectively the both sides of magnetism shield.