CN213183912U

CN213183912U - Coil assembly with magnetic attraction function and wireless charging device

Info

Publication number: CN213183912U
Application number: CN202021854572.3U
Authority: CN
Inventors: 何世友
Original assignee: Shenzhen Baseus Technology Co Ltd
Current assignee: Shenzhen Baseus Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-05-11
Anticipated expiration: 2030-08-28

Abstract

The utility model provides a coil component with magnetic attraction function and a wireless charging device, wherein the coil component comprises a coil and a magnetizer component, the magnetizer component comprises a soft magnet and a plurality of hard magnets, and the coil is arranged on the soft magnet; the plurality of hard magnets are embedded in the soft magnets and distributed on the periphery of the coil along the circumferential direction; on the directional centre of a circle of the radius of circumference, the polarity of every hard magnet inboard is opposite with the inboard polarity of adjacent hard magnet, and the polarity in every hard magnet outside is opposite with the polarity in the adjacent hard magnet outside, and N utmost point and S utmost point magnetism offset each other, reduce the electromagnetic interference to other electronic product on every side, can not produce the phenomenon of extra magnetic leakage, can reduce effectively the utility model discloses an EMI debugs the degree of difficulty. The utility model discloses need not additionally to add magnet or sucking disc, can adsorb the electronic product, reduced the manufacturing cost and the design degree of difficulty of product, reduced the utility model discloses a thickness, convenience of customers use and accomodate.

Description

Coil assembly with magnetic attraction function and wireless charging device

Technical Field

The utility model belongs to the technical field of relate to wireless charging, in particular to coil pack and wireless charging device of function are inhaled to electrified magnetism.

Background

With the progress of science and technology, the application of electronic products such as mobile phones, smart bracelets and the like has been deeply applied to the aspects of daily life. Electronic products are generally charged by using a wired charger, and a plug of the wired charger is required to be plugged with an interface of the electronic product during charging, so that the abrasion of the charging interface of the electronic product is inevitable in the past. The prior art provides a solution, and there is a wireless charger, including magnetic conductive sheet and spiral coil. The wireless charger in the prior art is connected with an alternating current power supply, electronic products such as a mobile phone and an intelligent bracelet are placed on a panel of the wireless charger, and wireless charging is achieved by means of electromagnetic induction of a spiral coil.

In order to enable an electronic product to be stably charged on a wireless charger, the wireless charger generally needs to have a suction function. In the prior art, a sucker or a magnet is additionally arranged outside a wireless charger to achieve the purpose of adsorption. However, the method of adding the suction cup or the magnet outside the wireless charger increases the production cost and the volume of the product, so that the development of the wireless charging technology is greatly limited.

In view of the above, the prior art cannot achieve the adsorption function well, so that improvement on the prior art is required.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coil pack and wireless charging device of function are inhaled to electrified magnetism, wherein coil pack includes magnetizer subassembly and coil, realizes the absorption to the electronic product through magnetizer subassembly to magnetic material's appeal for solve at least one aforementioned problem.

In order to achieve the above object, the utility model provides a coil component with magnetic attraction function, including coil and magnetizer component, the magnetizer component includes soft magnet and a plurality of hard magnets, the coil is arranged on the soft magnet;

the plurality of hard magnets are embedded on the soft magnet, and the plurality of hard magnets are distributed on the periphery of the coil along the circumferential direction;

in the directional centre of a circle direction of the radius of circumference, every inboard polarity of hard magnet is adjacent inboard polarity of hard magnet is opposite, every the polarity in the hard magnet outside is opposite with adjacent polarity in the hard magnet outside, and the magnetic properties of the N utmost point and S utmost point offset each other, can not destroy the wholeness ability of magnetizer subassembly originally, can not produce extra magnetic leakage.

Further, the shape and the size of the hard magnets are consistent, and the hard magnets are uniformly distributed.

Furthermore, the soft magnet is provided with a groove, and the hard magnet is arranged in the groove, so that the installation is convenient.

Further, the hard magnets are distributed along two or more circumferences having different diameters, so that the coil assembly can better adsorb electronic products.

Furthermore, the magnetizer component is formed by sintering the soft magnet and the hard magnet, and then the hard magnet is magnetized, so that an external magnet or a sucking disc is not needed, and the cost is reduced.

Further, the hard magnets distributed on the same circumference are connected with each other to form a ring structure.

Further, the section of the hard magnet on the plane of the circumference is fan-shaped or circular.

Further, the magnetizer subassembly is the lamellar structure, reduces the holistic thickness of coil pack for use the utility model discloses a wireless charger thickness is also thinner, convenient to use and accomodate.

Further, the hard magnet is fixed in the groove through glue, so that the hard magnet is more firmly installed in the groove.

The utility model provides a wireless charging device, includes shell and coil pack, the coil pack sets up in the shell, make wireless charger can play stable adsorption, and the volume is littleer.

The utility model discloses following beneficial effect has at least: the polarity of the inner side of each hard magnet is opposite to that of the inner side of the adjacent hard magnet, the polarity of the outer side of each hard magnet is opposite to that of the outer side of the adjacent hard magnet, and the N pole and the S pole are mutually offset, so that the integral performance of the original magnetizer assembly cannot be damaged, the electromagnetic interference to other surrounding electronic products is reduced, the phenomenon of extra magnetic leakage cannot be generated, and the EMI debugging difficulty of the utility model can be effectively reduced; the magnetizer component is designed to be combined with the soft magnet and the hard magnet, so that the electronic product can be adsorbed without additionally adding a magnet or a sucking disc, and the production cost is reduced; the bonding and fixing of the magnet and the sucker are reduced, and the design difficulty of the product is reduced; reduced the utility model discloses a thickness, make and use the utility model discloses a wireless charger volume is littleer, more light, and convenience of customers uses and accomodates.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a coil assembly with a magnetic attraction function according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of another embodiment of a coil assembly with a magnetic attraction function according to an embodiment of the present invention.

Fig. 3 is a plan view of the coil assembly with magnetic function according to the present invention.

Fig. 4 is the utility model discloses wireless charging device vertical coil direction's cross-sectional view.

In the figure: 1-magnetizer component, 11-soft magnet, 12-hard magnet, 2 coil and 3-shell.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 for purposes of illustration only and are not intended to limit the invention.

Referring to the attached drawings 1-3 of the specification, the coil component with the magnetic attraction function comprises a magnetizer component 1 and a coil 2. The magnetizer assembly 1 includes a plurality of hard magnets 12 and a soft magnet 11, the coil 2 is disposed on the soft magnet 11, the plurality of hard magnets 12 are embedded on the soft magnet 11, and the plurality of hard magnets 12 are distributed along a circumferential direction at the periphery of the coil 2.

Since there are usually metal parts such as batteries near the coil 2, when charging is performed by electromagnetic induction, eddy current is formed on the metal parts, which causes component damage, so after the hard magnets 12 are charged, in the direction in which the radius of the circumference surrounded by the hard magnets 12 points to the center of the circle, the polarity of the inner side of each hard magnet is opposite to the polarity of the inner side of the adjacent hard magnet, the polarity of the outer side of each hard magnet is opposite to the polarity of the outer side of the adjacent hard magnet, and the magnetism of the N pole and the S pole is cancelled, so that no magnetic leakage occurs.

Use the utility model discloses during charging, often need aim at coil 2 and the inside receiving coil of electronic product such as cell-phone, just can effectively charge, therefore the centre of a circle of the circumference that hard magnet 12 encloses and coil 2's center are in same position, make things convenient for the electronic product such as cell-phone to fix a position. Further, in order to enhance the adsorption capacity of the hard magnets 11, a plurality of hard magnets 12 are distributed along two or more circumferences, wherein the two or more circumferences have different diameters. In order to reduce the utility model discloses a thickness makes the utility model discloses be convenient for accomodate and use, magnetizer subassembly 1 is the slice.

In a specific embodiment, the present invention uses the soft magnet 11 as a substrate, injects the hard magnetic material on the soft magnet 11 along the circumference, and sinters together to form the soft magnet 11 and the hard magnet 12, and then the soft magnet 11 and the hard magnet 12 are combined to form the magnetizer assembly 1 shown in fig. 1. Wherein, the section of the hard magnets 12 on the plane of the circumference is in the shape of a sector ring with the same size, and the hard magnets 12 are connected with each other to form a ring structure.

In another embodiment the surface of the soft magnet 11 is provided with grooves along the circumference, in which grooves the hard magnet 12 is fixed. The cross section of the hard magnet 12 on the plane of the circumference can be circular or fan-shaped, and preferably, the cross section of the hard magnet 12 is circular, so that the manufacture is more convenient while the material is saved. Further, glue is applied between the hard magnet 12 and the groove, so that the hard magnet 12 is better fixed in the groove.

Referring to the specification and the attached fig. 4, a cross-sectional view of a wireless charging device in the direction perpendicular to the coil 2 is shown. The wireless charging device includes a case 3 and a coil block, and the coil block is disposed inside the case 3. Electronic products such as mobile phones are stably positioned on the shell due to the adsorption effect of the coil assembly, and wireless charging is conveniently achieved.

Therefore, the utility model discloses a coil pack and wireless charging device of function are inhaled to electrified magnetism that realize, wherein coil pack includes coil and magnetizer subassembly, and the magnetizer subassembly includes soft magnet and a plurality of hard magnet, and the coil sets up on soft magnet; the plurality of hard magnets are embedded on the soft magnet, and the plurality of hard magnets are distributed on the periphery of the coil along the circumferential direction; in the direction that the radius of circumference points to the centre of a circle, the polarity of the inboard of every hard magnet is opposite with the inboard polarity of adjacent hard magnet, the polarity of the outboard of every hard magnet is opposite with the polarity of the outboard of adjacent hard magnet, N utmost point and S utmost point magnetism offset each other, can not destroy the integral performance of the magnetizer subassembly originally, reduce the electromagnetic interference to other electronic products around, can not produce the phenomenon of extra magnetic leakage, can make the utility model discloses an EMI debugs the degree of difficulty and reduces effectively; the magnetizer component is designed to be combined with the soft magnet and the hard magnet, so that the electronic product can be adsorbed without additionally adding a magnet or a sucking disc, and the production cost is reduced; the bonding and fixing of the magnet and the sucker are reduced, and the design difficulty of the product is reduced; reduced the utility model discloses a thickness, make and use the utility model discloses a wireless charger volume is littleer, more light, and convenience of customers uses and accomodates.

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

Claims

1. A coil component with a magnetic attraction function is characterized by comprising a coil and a magnetizer component, wherein the magnetizer component comprises a soft magnet and a plurality of hard magnets, and the coil is arranged on the soft magnet;

in the direction that the radius of the circumference points to the circle center, the polarity of the inner side of each hard magnet is opposite to that of the inner side of the adjacent hard magnet, and the polarity of the outer side of each hard magnet is opposite to that of the outer side of the adjacent hard magnet.

2. The magnetically attractive coil assembly of claim 1, wherein the hard magnets are uniform in shape and size and are uniformly distributed.

3. A magnetically attractive coil assembly according to claim 1, wherein the soft magnet is provided with a recess and the hard magnet is provided in the recess.

4. The magnetically attractable coil assembly as recited in claim 1, wherein the hard magnets are distributed along two or more circumferences, the two or more circumferences having different diameters.

5. The magnetically attractable coil assembly as recited in claim 1, wherein the magnetizer assembly is formed by sintering the soft magnet and the hard magnet.

6. The magnetically attractive coil assembly of claim 1 wherein the hard magnets distributed on the same circumference are interconnected to form a ring structure.

7. The coil assembly with magnetic absorption function according to claim 1, wherein the cross section of the hard magnet body on the plane of the circumference is fan-shaped or circular.

8. The magnetically attractable coil assembly as recited in claim 1, wherein the magnetizer assembly has a plate-like structure.

9. The magnetically attractive coil assembly of claim 3 wherein the hard magnets are secured in the grooves by glue.

10. A wireless charging apparatus comprising a housing and a coil assembly as claimed in any one of claims 1 to 9, the coil assembly being disposed within the housing.