CN220710052U - Magnetic unit, magnetic group, electronic device, and device combination - Google Patents

Abstract

The utility model discloses a magnetic unit, a magnetic group, electronic equipment and equipment combination, wherein the magnetic unit comprises a magnet, the magnet is provided with a first surface and a second surface which are oppositely arranged, an S pole and an N pole of the magnet are adjacent to the first surface or the S pole and the N pole of the magnet, and the S pole and the N pole are bent or bent to extend in a magnetizing direction from the S pole to the N pole and protrude towards the second surface. The magnetic unit has small magnetic leakage quantity, avoids the interference influence of magnetic leakage on circuits, components and the like, reduces the design process difficulty, is favorable for reducing the whole volume of the electronic equipment and realizing light and thin design, and further can improve the portability of the electronic equipment.

Description

Magnetic unit, magnetic group, electronic device, and device combination

Technical Field

The utility model relates to the technical field of magnetic attraction, in particular to a magnetic unit, a magnetic group, electronic equipment and equipment combination.

Background

The wireless charging technology is a charging technology for transmitting energy between the charger and the power utilization device through a magnetic field, and the convenience of user operation is greatly improved due to the fact that connection of wires is eliminated. At present, in order to ensure the fixing effect, the charger and the power utilization device are connected and fixed in a magnetic attraction mode.

Taking power utilization devices such as mobile phones and the like as an example, the problem of magnetic leakage exists in mobile phones with built-in magnets, and the magnetic leakage can influence a large current path on components such as a camera, a loudspeaker, a vibration motor, an inductor, a circuit board (pcb) and the like, and the influence comprises the failure of the components, the vibration of the circuit board and the like, so that the user experience of the user is reduced.

In the related art, the magnetic leakage limits the placement positions of devices and circuits in the electronic equipment on one hand, increases the difficulty of a design process, and on the other hand, in order to avoid the magnetic interference influence of the magnetic leakage of the magnet, more avoidance needs to be made on the internal space positions of the power utilization devices such as the mobile phone and the like, so that the whole volume of the electronic equipment cannot be reduced, and the portability of the equipment is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the magnetic unit, which has small magnetic leakage, avoids the interference influence of magnetic leakage on circuits, components and the like, reduces the difficulty of a design process, is beneficial to reducing the whole volume of electronic equipment and realizing light and thin design, and further can improve the portability of the electronic equipment.

The embodiment of the utility model also provides a magnetic group comprising the magnetic unit.

The embodiment of the utility model also provides electronic equipment comprising the magnetic group.

The embodiment of the utility model also provides a device combination comprising the electronic device.

The magnetic unit comprises a magnet, wherein the magnet is provided with a first surface and a second surface which are oppositely arranged, an S pole and an N pole of the magnet are adjacent to the first surface or the S pole and the N pole of the magnet, and the S pole and the N pole are bent or bent to extend in a magnetizing direction from the S pole to the N pole and protrude towards the second surface.

The magnetic unit of the embodiment of the utility model has small magnetic leakage, avoids the interference influence of magnetic leakage on circuits, components and the like, reduces the difficulty of a design process, is beneficial to reducing the whole volume of electronic equipment and realizing light and thin design, and further can improve the portability of the electronic equipment.

In some embodiments, the magnet is a bonded isotropic magnet or a bonded anisotropic magnet and is integrally formed.

In some embodiments, the direction of magnetization from the S-pole to the N-pole is an arc, and the curvature of the direction of magnetization decreases and then increases along the direction from the S-pole to the N-pole.

In some embodiments, the isotropic magnet is bonded neodymium iron boron or bonded ferrite.

In some embodiments, the magnet is an anisotropic magnet, the magnet is formed by splicing a first magnetic part and a second magnetic part, the splice of the first magnetic part and the second magnetic part is positioned between the first surface and the second surface, the S pole is positioned on the first magnetic part, and the N pole is positioned on the second magnetic part.

In some embodiments, the magnetizing directions from the S pole to the N pole include a first magnetizing direction and a second magnetizing direction that are both straight lines, the first magnetizing direction is located at the first magnetizing portion, a length dimension of a projection of the first magnetizing direction in the second plane is smaller than a length dimension of the first magnetizing direction, the second magnetizing direction is located at the second magnetizing portion, and a length dimension of a projection of the second magnetizing direction in the second plane is smaller than a length dimension of the second magnetizing direction.

In some embodiments, the anisotropic magnet is sintered neodymium iron boron or sintered ferrite.

In some embodiments, the magnets are arcuate and have oppositely disposed intrados and extrados surfaces, one of the S and N poles being adjacent the intrados surface and the other being adjacent the extrados surface.

In some embodiments, the magnetic conductive member is attached to the second surface, and the magnetic conductive member is used for restraining the magnetic induction line from the S pole to the N pole in the magnet and/or the magnetic conductive member.

In some embodiments, the magnetic conductive member is made of a soft magnetic material.

The magnetic group according to the embodiment of the utility model comprises a plurality of the magnetic units according to any one of the embodiments, wherein the plurality of the magnetic units are sequentially connected, the first surfaces of the plurality of the magnetic units are all positioned on the same side of the magnetic group, and the second surfaces of the plurality of the magnetic units are all positioned on the other same side of the magnetic group.

In some embodiments, the magnetic groups are arc-shaped or ring-shaped.

The electronic device of the embodiment of the utility model comprises a first magnetic module, wherein the first magnetic module is the magnetic unit in any embodiment or the magnetic group in any embodiment.

In some embodiments, the electronic device includes a housing provided with a mounting groove, at least a portion of the first magnetic module is embedded in the mounting groove, and the first face is oriented toward an outside of the housing.

In some embodiments, the electronic device includes a housing integrally formed with a magnetically permeable portion configured as the first magnetic module with the first face facing an outside of the housing.

The device combination of the embodiment of the utility model comprises a first device and a second device which can be fixed by magnetic attraction, wherein the first device is the electronic device in any embodiment, the second device comprises a second magnetic module, and the first device and the second device realize the magnetic attraction fixation through the magnetic attraction of the first magnetic module and the second magnetic module.

Drawings

FIG. 1 is a schematic diagram of a magnetic unit according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a magnetic unit according to another embodiment of the utility model.

Fig. 3 is a schematic diagram of a magnetic unit of yet another embodiment of an embodiment of the present utility model.

Fig. 4 is a schematic diagram of a magnetic unit of yet another embodiment of an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a prior art magnetic unit.

FIG. 6 is a schematic top view of a magnetic unit according to an embodiment of the utility model.

FIG. 7 is a schematic diagram of a magnetic stack according to an embodiment of the present utility model.

Fig. 8 is a perspective schematic view of an electronic device of an embodiment of the utility model.

Fig. 9 is a schematic cross-sectional view at A-A in fig. 8.

Fig. 10 is a schematic diagram of a prior art magnetic attraction fixation of a device combination.

FIG. 11 is a schematic diagram of a second magnetic module according to an embodiment of the utility model.

FIG. 12 is a schematic diagram of the first magnetic module and the second magnetic module according to an embodiment of the utility model.

FIG. 13 is a schematic diagram showing the distribution of magnetic induction lines of a first magnetic module and a second magnetic module according to the prior art.

FIG. 14 is a schematic view of the first magnetic module and the second magnetic module according to the embodiment of the utility model.

FIG. 15 is a schematic diagram showing the distribution of magnetic induction lines of the first magnetic module and the second magnetic module according to the embodiment of the utility model.

FIG. 16 is a schematic diagram showing the distribution of magnetic induction lines of a first magnetic module and a second magnetic module according to another embodiment of the present utility model.

FIG. 17 is a schematic view of the magnetic attraction fixing of the first magnetic module and the second magnetic module according to another embodiment of the utility model.

FIG. 18 is a schematic diagram showing the distribution of magnetic induction lines of a first magnetic module and a second magnetic module according to another embodiment of the present utility model.

FIG. 19 is a schematic diagram showing the distribution of magnetic induction lines of a first magnetic module and a second magnetic module according to another embodiment of the present utility model.

FIG. 20 is a schematic view of the magnetic attraction fixation of the first magnetic module and the second magnetic module according to another embodiment of the present utility model.

Reference numerals:

a magnetic unit 10;

a magnet 1; a first face 11; a second face 12; an intrados surface 13; an outer cambered surface 14; a first magnetic section 15; a second magnetic portion 16; a splice 17;

magnetizing direction 2; a first magnetizing direction 21; a second magnetizing direction 22;

a magnetic conductive member 3;

a first device 200; a first housing 201; a magnetic conduction part 2011; a first magnetic module 202; a fitting groove 203;

a second device 300; a second housing 301; a second magnetic module 302.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The magnetic unit 10 of the embodiment of the present utility model includes the magnet 1, and the magnet 1 has the first face 11 and the second face 12 arranged opposite to each other, for example, as shown in fig. 1, the first face 11 and the second face 12 may be arranged opposite to each other in the up-down direction, wherein the first face 11 may be a lower surface of the magnet 1, and the second face 12 may be an upper surface of the magnet 1. In other embodiments, the magnetic unit 10 may have the first surface 11 and the second surface 12 arranged in the left-right direction, the front-back direction, or the like, depending on the actual use condition.

The S and N poles of the magnet 1 are adjacent to or provided on the first face 11, for example, as shown in fig. 1, the S and N poles may both be located on the first face 11 of the magnet 1 and may be spaced apart in the left-right direction, and in other embodiments the S pole may be located at the bottom of the left side face of the magnet 1, i.e., the S pole is closer to the first face 11 than the second face 12. The N-pole may then be located at the bottom of the right side of the magnet 1, i.e. also closer to the first face 11 than to the second face 12.

The magnetizing direction 2 from the S pole to the N pole is bent or folded and extends and protrudes towards the second face 12. For example, as shown in fig. 1, the magnetizing direction 2 from the S pole to the N pole may be regarded as the magnetizing direction 2 in the magnet 1, and during the processing of the magnetic unit 10, the magnetizing direction 2 may be made to be substantially arc-shaped by the magnetizing design, and the magnetizing direction 2 may be protruded above the second face 12.

In other embodiments, as shown in fig. 3, the induction line 2 may be generally V-shaped, that is, the magnetizing direction 2 may be bent and extended in the magnet 1, and the bent portion of the magnetizing direction 2 protrudes above the second surface 12.

In the use process, the first surface 11 forms a magnetic attraction working surface of the magnet 1, that is, the magnetic induction line 2 on the outer side of the magnet 1 comes out from the N pole and enters the S pole, so that the magnet 1 is magnetically attracted and fixed to other components. The second surface 12 forms a non-magnetic attraction working surface of the magnet 1, namely, the outer magnetic induction line 2 of the second surface 12 is less or not, so that the condition of magnetic leakage on the non-magnetic attraction working surface is avoided.

According to the magnetic unit 10 provided by the embodiment of the utility model, the magnetizing direction 2 is designed to be in a bending or bending mode, so that the distribution density of the magnetic induction lines 2 of the magnet 1 on one side of the non-magnetic attraction working surface is low, the magnetic leakage quantity of the magnet 1 is reduced, the interference influence of magnetic leakage on circuits, components and the like is avoided, the constraint limit condition of the magnetic leakage on the arrangement positions of the components, the circuits and the like of the electronic equipment is improved, and the design process difficulty is reduced.

Secondly, the situation that more avoidance needs to be carried out on the internal space positions of the power utilization device such as the mobile phone to reduce the influence of magnetic interference is avoided, so that the whole volume of the electronic equipment is reduced, the light and thin electronic equipment is realized, and the effect of improving the portability of the electronic equipment is achieved.

In some embodiments, the magnet 1 is an isotropic magnet and is integrally formed. The isotropic magnet is the magnet 1 with the same magnetic performance in any direction, and specifically, the magnet 1 may be a bonded neodymium iron boron, a bonded ferrite, or the like.

The isotropic magnet has the characteristics of being capable of designing a required magnetic field according to needs and carrying out orientation magnetization in any direction, so that the magnetization direction in the magnet 1 can be changed from the direction in fig. 5 to the bending direction in fig. 1 and 2 through the magnetization design, and the design of the magnetization direction 2 in the magnet 1 is facilitated.

In some embodiments, as shown in fig. 1 and 2, the magnetizing direction 2 from the S pole to the N pole is an arc, and the curvature of the magnetizing direction 2 decreases first and then increases along the direction from the S pole to the N pole, that is, the curvature of the magnetizing direction 2 in the S pole and the N pole along the direction from the left to the right is greater, and the curvature of the magnetizing direction 2 in the middle (that is, the position adjacent to the second face 12) is smaller, so that the restraint effect on the magnetic induction line 2 is ensured, and magnetic leakage is avoided.

In some embodiments, the magnet 1 is an anisotropic magnet, the magnet 1 is formed by splicing a first magnetic part 15 and a second magnetic part 16, a spliced part 17 of the first magnetic part 15 and the second magnetic part 16 is located between the first face 11 and the second face 12, an S pole is located at the first magnetic part 15, and an n pole is located at the second magnetic part 16.

For example, the anisotropic magnet is the magnet 1 with different magnetic properties in different directions, and the direction in which the anisotropic magnet can obtain the best magnetic properties is the orientation direction of the magnet 1. Specifically, the anisotropic magnet in this embodiment may be a sintered neodymium iron boron, sintered ferrite, or the like.

Since the anisotropic magnet can be magnetized in only one direction, in order to meet the bending design of the induction line 2, the magnet 1 in this embodiment includes two parts, as shown in fig. 3 and 4, which are a first magnetic part 15 and a second magnetic part 16, respectively, and the first magnetic part 15 and the second magnetic part 16 may be connected in the left-right direction. The joint 17 between the first magnetic part 15 and the second magnetic part 16 is the joint between the right side surface of the first magnetic part 15 and the left side surface of the second magnetic part 16.

The first magnetic portion 15 and the second magnetic portion 16 are each anisotropic magnets. In manufacturing the magnet 1, the first magnetic portion 15 and the second magnetic portion 16 may be magnetized first, and then the first magnetic portion 15 and the second magnetic portion 16 may be fixed by adhesion or the like. In other embodiments, the first magnetic part 15 and the second magnetic part 16 may be integrated by a sintering process, and then the first magnetic part 15 and the second magnetic part 16 may be magnetized by applying a magnetic field thereto.

The direction of magnetizing direction 2 in the first magnetic portion 15 and the direction of magnetizing direction 2 in the second magnetic portion 16 are different and form an included angle due to the difference of magnetizing directions. Specifically, as shown in fig. 3 and 4, the magnetization direction 2 in the first magnetic portion 15 extends generally in the lower left-to-upper right direction, and the magnetization direction 2 in the second magnetic portion 16 extends generally in the upper left-to-lower right direction. Thereby, a bending design of the magnetizing direction 2 in the magnet 1 is achieved.

In some embodiments, the magnetizing directions 2 from the S pole to the N pole include a first magnetizing direction 21 and a second magnetizing direction 22 that are both straight lines, the first magnetizing direction 21 is located in the first magnetizing portion 15, a projected length dimension of the first magnetizing direction 21 in the second face 12 is smaller than a length dimension of the first magnetizing direction 21, the second magnetizing direction 22 is located in the second magnetizing portion 16, and a projected length dimension of the second magnetizing direction 22 in the second face 12 is smaller than a length dimension of the second magnetizing direction 22.

For example, as shown in fig. 3 and 4, the magnet 1 may be generally divided into two sections according to the difference of the distribution positions and the difference of the extending directions, the two sections being a first magnetizing direction 21 and a second magnetizing direction 22, respectively, the first magnetizing direction 21 and the second magnetizing direction 22 being straight lines, wherein the first magnetizing direction 21 is located in the first magnetizing section 15 and extends generally along the left-lower-right upper direction, and the second magnetizing direction 22 extends generally along the left-upper-right lower direction.

Since the first magnetization direction 21 and the second magnetization direction 22 are each arranged obliquely in the horizontal direction, the first magnetization direction 21 and the second magnetization direction 22 each have components in the horizontal direction and the vertical direction. Therefore, the overall length of the first magnetization direction 21 is larger than the length dimension of its component in the horizontal direction (the length dimension of the projection in the second face 12), and the overall length of the second magnetization direction 22 is also larger than the length dimension of its component in the horizontal direction (the length dimension of the projection in the second face 12). By means of the integral bending design of the magnetizing direction 2 in the magnet 1, the constraint effect on the magnetizing direction 2 is guaranteed, and magnetic leakage is avoided.

In some embodiments, magnet 1 is arcuate and has oppositely disposed intrados 13 and extrados 14, one of the s and N poles being adjacent intrados 13 and the other being adjacent extrados 14.

For example, as shown in fig. 6, the magnet 1 may be generally fan-shaped and have an intrados surface 13 and an extrados surface 14 arranged opposite each other in the medial-lateral direction, wherein the S pole may be disposed adjacent to the intrados surface 13, the N pole may be disposed adjacent to the extrados surface 14, and in other embodiments, the N pole may be disposed adjacent to the intrados surface 13, and the S pole may be disposed adjacent to the extrados surface 14. The arc design of the magnets 1 facilitates the subsequent splicing of the plurality of magnets 1 into an annular shape or an arc shape, thereby meeting the use requirement of the circumferential magnetic attraction.

In some embodiments, the magnetic unit 10 includes a magnetic conductive member 3, where the magnetic conductive member 3 is attached to the second surface 12, and the magnetic conductive member 3 is used to constrain the magnetizing direction 2 from the S pole to the N pole within the magnet 1 and/or the magnetic conductive member 3.

For example, as shown in fig. 2 and fig. 4, the magnetic conductive member 3 may be in a flat plate shape, the magnetic conductive member 3 may be stacked on the second surface 12 of the magnet 1, and the magnetic conductive member 3 has a higher magnetic permeability, so that the magnetic induction line 2 may be better restrained by stacking the magnetic conductive member 3, thereby further playing a role in reducing the magnetic leakage of the non-magnetic attraction working surface, as shown in fig. 16 and fig. 19.

It should be noted that, the magnetic conductive member 3 may generally bind the magnetic induction wire 2 in the magnet 1, and in other embodiments, the magnetic conductive member 3 and the magnet 1 may each have the magnetic induction wire 2 distributed therein.

Optionally, the magnetic conductive member 3 is made of a soft magnetic material, and the soft magnetic material may be a ferrosilicon alloy, a ferroaluminum alloy, a ferronickel alloy, or the like.

The following describes the magnetic group of the embodiment of the present utility model.

The magnetic group according to the embodiment of the present utility model includes a plurality of magnetic units 10, the magnetic units 10 may be the magnetic units 10 described in any of the above embodiments, as shown in fig. 7, the plurality of magnetic units 10 may be sequentially connected along the circumferential direction, so that the magnetic group may be integrally formed into an arc shape, and in other embodiments, the plurality of magnetic units 10 may be spliced into a closed loop shape, for example, the magnetic group may be integrally formed into a ring shape, etc. The arc-shaped or annular design can realize circumferential magnetic attraction fixation, thereby meeting the use requirements of magnetic attraction in different directions and also ensuring the strength of the magnetic attraction fixation structure.

It should be noted that, when the plurality of magnetic units 10 are assembled, the first faces 11 of the plurality of magnetic units 10 are all located on the same side of the magnetic group, and the second faces 12 of the plurality of magnetic units 10 are all located on the other same side of the magnetic group. For example, the first faces 11 of the plurality of magnetic units 10 may each be located on the underside of the magnetic group, and the plurality of first faces 11 may be arranged substantially coplanar, the second faces 12 of the plurality of magnetic units 10 may each be located on the upper side of the magnetic group, and the plurality of second faces 12 may be arranged substantially coplanar.

Thus, the plurality of first surfaces 11 may form an entire magnetically attractable working surface, or the plurality of second surfaces 12 may form an entire non-magnetically attractable working surface. Thereby satisfying the use requirement of large-scale magnetic attraction fixation, and also ensuring the restraint effect on the magnetic induction line 2 when a plurality of magnetic units 10 are combined, and further avoiding the problem of magnetic leakage.

The electronic device of the embodiment of the utility model is described below.

The electronic device according to the embodiment of the present utility model includes the first magnetic module 202, where the first magnetic module 202 may be the magnetic unit 10 described in any of the above embodiments, and in other embodiments, the first magnetic module 202 may be the magnetic group described in any of the above embodiments. As shown in fig. 8 and 9, the electronic device may include a housing, that is, a subsequent first housing 201, and the first magnetic module 202 may be fixed to an inner side of the housing. In use, the first magnetic module 202 can be used to fix the electronic device by magnetic attraction.

In some embodiments, as shown in fig. 14, the electronic device includes a housing, that is, a subsequent first housing 201, which is provided with a fitting groove 203, and the fitting groove 203 may be provided on an inner wall surface of the housing. The mounting groove 203 may be an annular groove, and at least a portion of the first magnetic module 202 may be embedded in the mounting groove 203 when mounted, i.e., a portion of the first magnetic module 202 may be embedded in the mounting groove 203, or in other embodiments, the first magnetic module 202 may be completely embedded in the mounting groove 203. And when the electronic equipment is installed, the first surface 11 of the first magnetic module 202 can face to the outer side of the shell, so that the use requirement of magnetic attraction and fixation of the electronic equipment is met.

As shown in fig. 14 and 17, the arrangement of the assembly slot 203 can make the first magnetic module 202 and the housing coincide in the thickness direction of the housing, so that the overall size and thickness can be reduced, the distance between the first magnetic module 202 and the position where the electronic device is magnetically attracted and fixed can be reduced, the effect of reducing magnetic resistance is achieved, and the strength of the magnetic attraction and fixation is enhanced. On the other hand, the reduction of the thickness can reduce the whole volume of the electronic equipment, thereby being beneficial to realizing the light and thin design of the electronic equipment and improving the portability. In addition, the fixing effect of the first magnetic module 202 can be enhanced by the stop limit of the assembly groove 203.

In some embodiments, the electronic device includes a housing, i.e., the subsequent first housing 201, which may be fabricated from an isotropic magnetic material that is magnetizable, and which does not create magnetism when not magnetized. As shown in fig. 20, the housing is integrally formed with a magnetic conduction portion 2011, the magnetic conduction portion 2011 may be disposed in the middle of the housing, during processing, only a part of the housing may be magnetized, the magnetic conduction portion 2011 is formed after magnetizing, the magnetic conduction portion 2011 is configured as the first magnetic module 202, and during mounting, the first surface 11 of the first magnetic module 202 may face the outer side of the housing, so that the use requirement of fixing the electronic device by magnetic attraction is satisfied.

Therefore, the part of the shell which is directly utilized is magnetized to realize the magnetic attraction function, so that the situation of stacking the magnet 1 in the shell is avoided, and the effect of reducing the stacking thickness is directly achieved.

The device combinations of the embodiments of the present utility model are described below.

As shown in fig. 10, the device assembly according to the embodiment of the present utility model includes a first device 200 and a second device 300 that can be magnetically fixed, where the first device 200 may be an electronic device described in any of the foregoing embodiments, the first device 200 may include a first housing 201 and a first magnetic module 202, where the first magnetic module 202 may be fixed on an inner side of the first housing 201, and the second device 300 includes a second housing 301 and a second magnetic module 302, and the second magnetic module 302 is fixed on an inner side of the second housing 301. The first device 200 and the second device 300 achieve magnetic attraction fixation through the magnetic attraction of the first magnetic module 202 and the second magnetic module 302.

In some embodiments, as shown in fig. 11 and 12, the second magnetic module 302 may also be a ring, and the second magnetic module 302 may be formed by splicing the independent magnets 1, so that, in use, the first magnetic module 202 and the second magnetic module 302 may achieve magnetic attraction fixation in a circumferential direction, thereby ensuring a fixation effect.

In the device combination according to the embodiment of the present utility model, the first device 200 may be specifically an RX device, and the second device 300 may be specifically a TX device. The magnetic flux density of the magnetic induction line 2 of the first device 200 in fig. 15, 16, 18, 19 is greater on the side of the magnetic attraction working surface (the side toward the second device 300) than the device combination in the related art (as shown in fig. 13), thereby ensuring the magnetic attraction adhesion with the second device 300.

Secondly, the distribution range of the magnetic induction lines 2 on the periphery side of the first magnetic module 202 is smaller, and the distribution range is minimized on the side of the non-magnetic attraction working surface, so that the problem of magnetic leakage is solved, and the influence on components such as a circuit board, an inductor and the like on the side of the non-magnetic attraction working surface is reduced.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (16)

1. A magnetic unit comprising a magnet having oppositely disposed first and second faces, the S and N poles of the magnet being disposed adjacent to the first face or the S and N poles of the magnet and being bent or folded to extend from the S pole to the N pole in a magnetizing direction and protruding toward the second face.

2. The magnetic unit of claim 1, wherein the magnet is a bonded isotropic magnet or a bonded anisotropic magnet and is integrally formed.

3. The magnetic unit according to claim 2, wherein a magnetization direction from the S pole to the N pole is an arc, and a curvature of the magnetization direction decreases and increases in a direction from the S pole to the N pole.

4. The magnetic unit of claim 2, wherein the isotropic magnet is bonded neodymium iron boron or bonded ferrite.

5. The magnetic unit of claim 1, wherein the magnet is an anisotropic magnet, the magnet is formed by splicing a first magnetic part and a second magnetic part, the splice of the first magnetic part and the second magnetic part is located between the first face and the second face, the S-pole is located at the first magnetic part, and the N-pole is located at the second magnetic part.

6. The magnetic unit according to claim 5, wherein the magnetization directions from the S pole to the N pole include a first magnetization direction and a second magnetization direction that are both straight lines, the first magnetization direction being located at the first magnetization portion, and a projected length dimension of the first magnetization direction in the second plane being smaller than a length dimension of the first magnetization direction, the second magnetization direction being located at the second magnetization portion, and a projected length dimension of the second magnetization direction in the second plane being smaller than a length dimension of the second magnetization direction.

7. The magnetic unit of claim 5, wherein the anisotropic magnet is sintered neodymium iron boron or sintered ferrite.

8. The magnetic unit of claim 1, wherein the magnet is arcuate and has oppositely disposed intrados and extrados surfaces, one of the S-pole and the N-pole being adjacent to the intrados surface and the other being adjacent to the extrados surface.

9. A magnetic unit according to any of claims 1-8, comprising a magnetically permeable member, said magnetically permeable member being snugly attached to said second face and said magnetically permeable member being adapted to confine a magnetic induction line from said S-pole to said N-pole within said magnet and/or said magnetically permeable member.

10. The magnetic unit of claim 9, wherein the magnetically permeable member is made of a soft magnetic material.

11. A magnetic stack comprising a plurality of magnetic units according to any one of claims 1-10, wherein a plurality of said magnetic units are connected in sequence, and wherein said first faces of said plurality of magnetic units are all on the same side of the stack and said second faces of said plurality of magnetic units are all on the other same side of the stack.

12. The magnetic group of claim 11, wherein the magnetic group is arcuate or ring-shaped.

13. An electronic device comprising a first magnetic module being a magnetic unit as claimed in any one of the preceding claims 1-10 or a magnetic group as claimed in claim 11 or 12.

14. The electronic device of claim 13, comprising a housing having a mounting slot, wherein at least a portion of the first magnetic module is embedded in the mounting slot and the first face is oriented outwardly of the housing.

15. The electronic device of claim 13, comprising a housing integrally formed with a magnetically permeable portion configured as the first magnetic module with the first face facing outward of the housing.

16. A device combination, comprising a first device and a second device that are magnetically fixable, the first device being an electronic device according to any one of the preceding claims 13-15, the second device comprising a second magnetic module, the first device and the second device being magnetically fixable by a magnetic attraction of the first magnetic module and the second magnetic module.