Magnetic component and assembly method thereof, linear motor, camera, and electronic equipment

Abstract

The present application relates to the technical field of bendable circuit boards and provides a magnetic assembly and assembly method thereof, a linear motor, a camera, and an electronic device, capable of resolving the problems of low connection reliability between two repelling magnets in magnetic assemblies and low assembly efficiency of magnetic assemblies in related technologies. The magnetic assembly includes a magnet unit, which includes multiple magnets, wherein two adjacent and repelling magnets are welded together. The present application can be used in electronic devices such as mobile phones.

Description

Technical Field

[0001] The present application relates to the field of magnetic attraction technology, and in particular to a magnetic attraction component and an assembly method thereof, a linear motor, a camera, and an electronic device. Background Art

[0002] Magnetic components such as the Halbach array are widely used in devices such as linear motors because of their good magnetic effect. Magnetic components are usually assembled by arranging multiple magnets according to a certain pattern. How to reliably assemble multiple magnets together directly affects the normal operation of the magnetic component. In the magnetic components in related technologies, such as the Halbach array, two repelling magnets are bonded together by a glue layer. However, the connection strength between two adjacent magnets bonded by the glue layer is low. Over time, the two magnets are easily detached due to the repulsive force, which reduces the connection reliability between the two repelling magnets and affects the normal operation of the magnetic component. At the same time, the magnets are bonded by a glue layer, and the glue layer needs to be baked during the assembly process to solidify the glue layer, which takes up a lot of time and is not conducive to improving assembly efficiency. Summary of the Invention

[0003] The embodiments of the present application provide a magnetic attraction component and its assembly method, a linear motor, a camera, and an electronic device, which are used to solve the problems of low connection reliability between two repelling magnets in the magnetic attraction component and low assembly efficiency of the magnetic attraction component in the related art.

[0004] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0005] First, embodiments of the present application provide a magnetic attraction assembly comprising a magnet unit, the magnet unit comprising a plurality of magnets, wherein two adjacent, repelling magnets are welded together. This arrangement provides a tighter connection between the repelling magnets and a higher connection strength, thereby improving the reliability of the connection between the repelling magnets and ensuring the normal operation of the magnetic attraction assembly. Simultaneously, welding the repelling magnets together eliminates time-consuming processes such as baking, thereby improving the assembly efficiency of the magnetic attraction assembly.

[0006] In some embodiments, the junction of two adjacent and repelling magnets is provided with a welded joint, which connects the two adjacent and repelling magnets together. Such a configuration is more conducive to connecting the magnets together, thereby facilitating an improvement in the connection strength between the magnets.

[0007] In some embodiments, the magnet unit is a Halbach array, and each magnet includes a first end face and a second end face disposed opposite to each other, and a first magnet side face connected between the first end face and the second end face. The first end face is the surface of the magnet located on the strong magnetic side of the magnet unit, and the second end face is the surface of the magnet located on the weak magnetic side of the magnet unit. Along a first direction, the first magnet side faces are located at opposite ends of the magnet, and the first direction is perpendicular to the arrangement direction of the magnets in the magnet unit. In two adjacent magnets, the junction of the first magnet side faces of the magnets has a welded joint, and / or the junction of the second end faces of the magnets has a welded joint. Such an arrangement can reduce the impact of welding on the magnetism of the magnet unit.

[0008] In some embodiments, the magnet unit includes two magnets, namely a first magnet and a second magnet, the first magnet includes a first sub-magnet portion and a second sub-magnet portion, the first sub-magnet portion and the second sub-magnet portion are an integral structure, and the second sub-magnet portion is located between the first sub-magnet portion and the second magnet, the polarity of the first sub-magnet portion is opposite to the polarity of the second magnet, and the polarity of the second sub-magnet portion is perpendicular to the polarity of the first sub-magnet portion. Such an arrangement can make the structure of the magnet unit more compact, thereby facilitating improved assembly efficiency of the magnet unit.

[0009] In some embodiments, each magnet in a magnet unit includes two magnet end faces disposed opposite to each other, and a first magnet side face connected between the two magnet end faces. Each magnet has the same polarity, with one magnet end face pointing toward the other magnet end face. Along a first direction, the first magnet side faces are located at opposite ends of the magnet, and the first direction is perpendicular to the arrangement direction of the magnets in the magnet unit. The junction of the first magnet side faces of two adjacent magnets has a welded joint. This arrangement can reduce the impact of welding on the magnetism of the magnet unit.

[0010] In some embodiments, the number of magnet units is multiple, and the multiple magnet units are arranged along the arrangement direction of the magnets in the magnet units, the polarity of the magnets in two adjacent magnet units is opposite, and the junction of the side surfaces of the first magnets of the two adjacent magnet units has a welded joint. This arrangement can make the connection between the two adjacent magnet units more secure, thereby improving the connection reliability between the magnet units.

[0011] In some embodiments, the welded joint is a strip-shaped structure extending along the seam between the magnets. This arrangement can increase the length of the joint between the magnets in the extending direction of the seam, thereby facilitating an improvement in the connection strength between the magnets.

[0012] In some embodiments, the welded joints along the seams between the magnets are wavy, which can increase the length of the joints between the magnets in the width direction of the seams, thereby improving the connection strength between the magnets.

[0013] In some embodiments, along the seams between the magnets, the ends of the welded joints are spaced apart from the edges of the magnets, thereby preventing damage to the edges of the magnets caused by high temperatures during the formation of the welded joints.

[0014] In some embodiments, there are multiple welding joints, which are spaced apart along the joints between the magnets. This arrangement reduces the space occupied by the welding joints, so that the magnets are less deformed during welding.

[0015] In some embodiments, the weld joint has a spiral pattern extending from the center of the weld joint to the edge of the weld joint. This arrangement can expand the area of ​​the weld joint, thereby making the connection between the magnets more secure.

[0016] In some embodiments, the magnetic assembly further comprises a magnet holder, the magnet holder being provided with a receiving slot, the bottom wall of the receiving slot being covered with a magnetic conductive sheet, and the magnet unit being at least partially disposed in the receiving slot. This arrangement allows the magnets of the magnet unit to be more tightly coupled, thereby preventing separation of the magnets.

[0017] In the second aspect, an embodiment of the present application provides a linear motor, comprising a stator, a mover, a drive coil, and the magnetic attraction component in the first aspect, wherein the drive coil is arranged on one of the stator and the mover, and the magnetic attraction component is arranged on the other of the stator and the mover.

[0018] The beneficial effects of the linear motor in the embodiment of the present application are the same as the beneficial effects of the magnetic attraction component in the first aspect, and will not be repeated here.

[0019] In the third aspect, an embodiment of the present application provides a camera, comprising an optical lens, a photosensitive element, and the linear motor in the second aspect, wherein the optical lens is fixedly connected to the mover of the linear motor, the photosensitive element is arranged on the image side of the optical lens, and along the axial direction of the optical lens, the photosensitive element and the stator of the linear motor are relatively fixed.

[0020] The beneficial effects of the camera in the embodiment of the present application are the same as the beneficial effects of the magnetic attraction component in the first aspect, and will not be repeated here.

[0021] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising a housing, and the camera according to the third aspect, wherein the camera is disposed on the housing.

[0022] The beneficial effects of the electronic device in the embodiment of the present application are the same as the beneficial effects of the magnetic attraction component in the first aspect, and will not be repeated here.

[0023] In the fifth aspect, an embodiment of the present application provides an assembly method for a magnetic attraction component, comprising: welding two adjacent and repelling magnets in a magnet unit of the magnetic attraction component; wherein the magnet unit comprises a plurality of magnets, and the plurality of magnets of the magnet unit are placed on a carrying surface of a carrier.

[0024] The beneficial effects of the assembly method of the magnetic attraction component in the embodiment of the present application are the same as the beneficial effects of the magnetic attraction component in the first aspect, and will not be repeated here.

[0025] In some embodiments, the magnet unit is a Halbach array, and each magnet includes a first end face and a second end face disposed opposite to each other, and a first magnet side face connected between the first end face and the second end face, wherein the first end face is located on the strong magnetic side of the magnet unit, and the second end face is located on the weak magnetic side of the magnet unit; along a first direction, the first magnet side faces are located at opposite ends of the magnet, and the first direction is perpendicular to the arrangement direction of the magnets in the magnet unit; welding two adjacent and repelling magnets in the magnet unit of the magnetic attraction assembly includes: welding at the junction of the welding surfaces of the two adjacent magnets; wherein the welding surface is located on the side of the magnet facing away from the bearing surface, and the welding surface is the second end face or the first magnet side face. Such an arrangement can reduce the impact of welding on the magnetism of the magnet unit.

[0026] In some embodiments, the carrier includes a carrier body and a movable carrier, the carrier body is provided with a receiving hole, the movable carrier is arranged in the receiving hole and can be separated from the carrier body, and the movable carrier is used to set the magnet unit; after welding the joints of the welding surfaces of two adjacent magnets, the method further includes: separating the movable carrier from the carrier body; moving the movable carrier to the top of the magnet fixing frame and rotating the movable carrier by a certain angle so that the first end face of the magnet is away from the bottom wall of the receiving groove on the magnet fixing frame; separating the movable carrier from the magnet unit to place the magnet unit in the receiving groove of the magnet fixing frame. Such a setting can avoid direct contact between the transfer mechanism and the magnet unit, thereby reducing damage to the magnet unit caused by external forces during the process of placing the magnet unit on the magnet fixing frame.

[0027] In some embodiments, the movable platform includes a platform body and magnetic adsorption members movably disposed on opposite sides of the platform body. The magnetic unit includes three magnets, with the central magnet located on the platform body and the two side magnets partially located on the platform body and partially located on corresponding magnetic adsorption members. Each magnetic adsorption member is attracted to a corresponding magnet. Separating the movable platform from the magnetic unit includes adjusting the position of each magnetic adsorption member relative to the platform body so that each magnetic adsorption member is separated from the corresponding magnet. This arrangement can reduce damage to the magnetic unit caused by external forces during separation from the movable platform.

[0028] In some embodiments, before welding two adjacent and repelling magnets in the magnet unit of the magnetic attraction assembly, the method further includes: covering the plurality of magnets with a protective cover plate; wherein the cover plate has a clearance hole, and the clearance hole is opposite the welded portion of the magnet. This arrangement can protect the non-welded portion of the magnet, thereby preventing the welding equipment from damaging the non-welded portion of the magnet during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the distribution diagram of the magnetic flux lines of a bar magnet;

[0030] Figure 2 This is a magnetic flux distribution diagram of a Halbach array;

[0031] Figure 3 This is a magnetic flux distribution diagram of another Halbach array;

[0032] Figure 4 It is a structural diagram of a magnetic attraction component in the related art;

[0033] Figure 5 for Figure 4 A schematic diagram of an assembly process of a magnetic component in FIG.

[0034] Figure 6 for Figure 4 A schematic diagram of another assembly process of the magnetic component;

[0035] Figure 7 This is a schematic structural diagram of the magnetic attraction assembly in the first embodiment of the present application;

[0036] Figure 8 for Figure 7 A bottom view of the magnetic assembly shown;

[0037] Figure 9 Schematic diagram of the structure of the magnetic attraction assembly in the second embodiment of the present application;

[0038] Figure 10 Schematic diagram of the structure of the magnetic attraction assembly in the third embodiment of the present application;

[0039] Figure 11 Schematic diagram of the structure of the magnetic attraction assembly in the fourth embodiment of the present application;

[0040] Figure 12 This is a structural diagram of the magnetic attraction assembly in the fifth embodiment of the present application;

[0041] Figure 13 This is a structural diagram of the magnetic attraction component in the sixth embodiment of the present application;

[0042] Figure 14This is a structural diagram of the magnetic attraction component in the seventh embodiment of the present application;

[0043] Figure 15 This is a structural diagram of the magnetic attraction component in the eighth embodiment of the present application;

[0044] Figure 16 This is a structural diagram of the magnetic attraction component in the ninth embodiment of the present application;

[0045] Figure 17 This is a structural diagram of the magnetic attraction assembly in the tenth embodiment of the present application;

[0046] Figure 18 This is a structural diagram of the magnetic attraction assembly in the eleventh embodiment of the present application;

[0047] Figure 19 This is a structural diagram of the magnetic attraction component in the twelfth embodiment of the present application;

[0048] Figure 20 Schematic diagram of the assembly process of the magnetic attraction assembly in some embodiments of the present application;

[0049] Figure 21 This is a schematic diagram of the structure of the movable platform in some embodiments of the present application;

[0050] Figure 22 This is a schematic diagram of the structure of a camera in some embodiments of the present application;

[0051] Figure 23 for Figure 22 AA cross-sectional view of the middle camera;

[0052] Figure 24 This is a schematic diagram of the back side of an electronic device in some embodiments of the present application;

[0053] Figure 25 for Figure 24 BB cross-sectional view of the electronic device shown. DETAILED DESCRIPTION

[0054] The technical solutions in some embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0055] In order to facilitate understanding of the working principle of the magnetic attraction component of the embodiment of the present application, the magnetic induction characteristics of the magnet and the Halbach array are first introduced below.

[0056] like Figure 1 As shown, Figure 1The diagram shows the distribution of magnetic flux lines for a bar magnet. The left end of the magnet is the south pole, and the right end is the north pole. The solid arrows in the diagram represent the magnet's polarity (i.e., the direction of the magnetic poles), which is the direction from the south pole to the north pole inside the magnet. When the magnet is magnetizable, the polarity is also called the magnetization direction. The dotted lines in the diagram represent the distribution of magnetic flux lines formed outside the magnet, which start from the north pole outside the magnet and return to the south pole.

[0057] The Halbach array is a magnetic structure that is an almost ideal structure in engineering. Its principle is to use magnets arranged in a certain pattern to enhance the magnetic field strength in a unit direction, so as to achieve the purpose of generating the strongest magnetic field with the least amount of magnets. Figure 2 As shown, Figure 2 This is a diagram of the magnetic flux distribution of a Halbach array. The Halbach array consists of three magnets arranged in sequence. The three solid arrows in the figure represent the polar directions of the three magnets. The magnetic fields formed by the three magnets affect each other, effectively increasing the magnetic field strength on the upper side and effectively reducing the magnetic field strength on the lower side. The side with stronger magnetic field strength in the Halbach array is called the strong magnetic side, and the side with weaker magnetic field strength is called the weak magnetic side. For example, Figure 2 The upper side of the Halbach array is the strong magnetic side, and the lower side is the weak magnetic side.

[0058] Of course, the Halbach array is not limited to Figure 2 The permutations shown in , for example Figure 3 As shown, Figure 3 This diagram shows the magnetic flux distribution of another type of Halbach array. The Halbach array consists of five magnets arranged in sequence. The five solid arrows in the diagram represent the polarity of each magnet. The magnetic fields generated by these five magnets interact with each other, effectively increasing the magnetic field strength on the upper side of the Halbach array and decreasing it on the lower side.

[0059] like Figure 4 As shown, Figure 4 This is a structural schematic diagram of a magnetic attraction component in the related art, which includes a magnet fixing frame 01 and a magnet unit 02. The magnet fixing frame 01 is provided with a receiving groove 011, and the magnet unit 02 is arranged in the receiving groove 011. A first adhesive layer 031 is provided between the magnet unit 02 and the groove wall of the receiving groove 011 to bond and fix the magnet unit 02 to the magnet fixing frame 01.

[0060] The magnet unit 02 is a Halbach array and includes three magnets 021 arranged in sequence. Because there is a repulsive force between adjacent magnets 021, a second adhesive layer 032 is provided between the two adjacent magnets 021 to bond and secure them. The side of the magnet unit 02 facing away from the bottom wall of the receiving slot 011 (i.e., the upper side in the figure) is the strong magnetic side, while the side of the magnet unit 02 closer to the bottom wall of the receiving slot 011 (i.e., the lower side in the figure) is the weak magnetic side.

[0061] like Figure 5 As shown, Figure 5 for Figure 4 A schematic diagram of an assembly process of a magnetic attraction component in FIG. The assembly method of the magnetic attraction component includes the following steps:

[0062] M1, such as Figure 5 As shown in (1), the plurality of magnets 021 of the magnet unit 02 are set on the magnetic conductive sheet 051 of the carrier plate 04.

[0063] M2, such as Figure 5 As shown in (2), glue is dispensed on the side wall of each magnet 021.

[0064] M3, such as Figure 5 As shown in (3), a magnetic rod 052 is set on the top of each magnet 021.

[0065] M4, such as Figure 5 As shown in (4), a plurality of magnets 021 are pushed and pressed sideways by a push rod 053 to form a magnet unit 02, and the magnet unit 02 is baked so that the glue between two adjacent magnets 021 is solidified to form a second glue layer 032.

[0066] M5, such as Figure 5 As shown in (5), the magnet unit 02 is set in the receiving groove 011 of the magnet fixing frame 01, and the magnet unit 02 is bonded and fixed in the receiving groove 011 through the first adhesive layer 031.

[0067] like Figure 6 As shown, Figure 6 for Figure 4 Schematic diagram of another assembly process of the magnetic component. Figure 6 The assembly method shown is the same as Figure 5 The main differences between the assembly methods shown are: Figure 6 The assembly method shown is to assemble the magnet 021 directly with the magnet holder 01, as described below: The assembly method of the magnetic attraction assembly includes the following steps:

[0068] N1, such as Figure 6 As shown in (1), glue is provided at both ends of the receiving groove 011 of the magnet fixing frame 01.

[0069] N2, such as Figure 6 As shown in (2), the magnets 021 on both sides are placed at the two ends of the receiving groove 011 respectively, and then the magnets 021 on both sides are pressurized by the magnetic isolation fixture 06, and then baked to solidify the glue between the magnets 021 on both sides and the groove wall of the receiving groove 011 to form a first glue layer 031.

[0070] N3, such as Figure 6 As shown in (3), take out the magnetic isolation fixture 06 and apply glue in the middle area of ​​the receiving groove 011 and the side walls of the magnet 021 on both sides.

[0071] N4, such as Figure 6 As shown in (4), the middle magnet 021 is placed between the magnets 021 on both sides, and the middle magnet 021 is pressurized by the pressurizing jig 07, and then baked so that the glue between the middle magnet 021 and the magnets 021 on both sides is solidified to form a second glue layer 032, and the glue between the middle magnet 021 and the groove wall of the accommodating groove 011 forms a first glue layer 031.

[0072] In related art magnetic assemblies, the connection strength between two adjacent magnets 021 in a magnet unit 02, bonded via a second adhesive layer 032, is relatively low. Over time, the tightness of the bond between the second adhesive layer 032 and the magnets 021 decreases, and the two magnets 021 are easily separated due to repulsive forces. This reduces the reliability of the connection between the two repelling magnets 021, thereby affecting the proper functioning of the magnetic assembly. Furthermore, the adhesive layer between the magnets 021 requires baking to solidify it during assembly, which consumes a significant amount of time and is detrimental to improving assembly efficiency.

[0073] To this end, the embodiments of the present application provide a magnetic attraction component and its assembly method, a linear motor, a camera, and an electronic device. By welding two adjacent and repelling magnets in a magnet unit together, the connection strength between the repelling magnets is improved and the assembly efficiency of the magnetic attraction component is improved, thereby solving the problems of low connection reliability between the repelling magnets in the magnetic attraction component and low assembly efficiency of the magnetic attraction component in related technologies.

[0074] like Figure 7 and Figure 8 As shown, Figure 7 This is a schematic structural diagram of the magnetic attraction component in the first embodiment of the present application. Figure 8 for Figure 7 The bottom view of the magnetic attraction assembly is shown. The magnetic attraction assembly includes a magnet unit 1, which is a Halbach array and includes a plurality of magnets 11. Among the plurality of magnets 11, two adjacent and repelling magnets 11 are welded.

[0075] The material of the magnet 11 may be neodymium iron boron magnet (NdFe14B), but is not limited thereto. Other weldable magnetic materials, such as natural magnet (Fe3O4), etc., may also be used.

[0076] like Figure 7 As shown, each magnet 11 includes a first end face 111 and a second end face 112 that are arranged opposite to each other, and a first magnet side face 113 and a second magnet side face 114 that are respectively connected between the first end face 111 and the second end face 112, and the first end face 111 is the strong magnetic side of the magnet 11 located on the magnet unit 1 (for example, Figure 7 The second end surface 112 is the surface of the magnet 11 located on the weak magnetic side of the magnet unit 1 (eg Figure 7 as shown below); Figure 8 As shown, along the first direction X, the first magnet side surfaces 113 are respectively located at opposite ends of the magnet 11, and the first direction X is perpendicular to the arrangement direction Y of the magnets 11 in the magnet unit 1; along the arrangement direction Y of the magnets 11, the second magnet side surfaces 114 are respectively located at opposite ends of the magnet 11, and in two adjacent magnets 11, the second magnet side surfaces 114 of the magnets 11 are connected.

[0077] Of course, magnet 11 is not limited to Figure 7 In the structure shown, the magnet 11 may also adopt other shapes according to actual conditions.

[0078] Compared to bonding with adhesive, welding (i.e., fusing) two adjacent, repelling magnets 11 together provides a tighter connection and higher strength, thereby improving the reliability of the connection between the repelling magnets 11 and ensuring the proper functioning of the magnetic assembly. Welding the repelling magnets 11 eliminates time-consuming processes such as baking, thereby improving the assembly efficiency of the magnetic assembly.

[0079] In addition, the two repelling magnets 11 can be welded together after the two repelling magnets 11 are in contact with each other, thus avoiding Figure 6 The illustrated assembly method solves the problem that the middle magnet 021 cannot be assembled due to glue overflow, thereby resulting in better assembly consistency of the magnet unit 1 .

[0080] In some embodiments, as Figure 7 and Figure 8 As shown, the joint of two adjacent and repelling magnets 11 has a welding joint 2, and the welding joint 2 connects the two adjacent and repelling magnets 11 together.

[0081] The welded joint 2 is a portion of the magnet 11 that is partially welded by heating, high temperature, or high pressure. For example, the magnet 11 is partially melted to form a molten pool, which cools and solidifies to form the welded joint 2. The two repelling magnets 11 can be formed by various welding processes, such as laser welding, soldering, argon arc welding, resistance welding, ultrasonic welding, etc.

[0082] By arranging the welding joint 2 at the joint of the magnets 11 , it is more conducive to connecting the magnets 11 together, thereby facilitating the improvement of the connection strength between the magnets 11 , and further facilitating the improvement of the connection reliability between the repelling magnets 11 .

[0083] The location of the welding joint 2 is not unique. In some embodiments, such as Figure 7 and Figure 8 As shown, in two adjacent magnets 11, the second end faces 112 of the magnets 11 are connected at a welded joint 2, that is, the welded joint 2 is located on the weak magnetic side of the magnet unit 1. This arrangement can reduce the impact of high temperature and other factors on the working surface (the surface on the strong magnetic side) of the magnet unit 1 during welding, thereby reducing the impact of welding on the magnetic properties of the magnet unit 1.

[0084] In some embodiments, as Figure 9 and Figure 10 As shown, Figure 9 This is a schematic structural diagram of the magnetic attraction component in the second embodiment of the present application. Figure 10 This is a schematic diagram of the structure of the magnetic attraction assembly in the third embodiment of the present application. In two adjacent magnets 11, the junction of the first magnet side surfaces 113 of the magnets 11 has a welded joint 2. This arrangement can reduce the impact of high temperatures and other factors on the working surface of the magnet unit 1 during welding, thereby reducing the impact of welding on the magnetic properties of the magnet unit 1.

[0085] In addition to the above-mentioned locations, the welded joint 2 can also be located at the junction of the first end faces 111 of the magnet 11, that is, the welded joint 2 is located on the strong magnetic side of the magnet unit 1. The welded joint 2 can also be located at at least two of the following locations: the junction of the first end faces 111 of the magnet 11, the junction of the second end faces 112 of the magnet 11, and the junction of the first magnet side faces 113 of the magnet 11.

[0086] There are many ways to set the number of magnets 11 in the magnet unit 1. In some embodiments, for example Figure 9As shown, the magnet unit 1 includes three magnets 11, which are magnet 11a, magnet 11b and magnet 11c. Magnet 11a, magnet 11b and magnet 11c are arranged in sequence. The pole direction of magnet 11a points to the strong magnetic side of the magnet unit 1, which is the upper side in the figure; the pole direction of magnet 11b is perpendicular to the pole direction of magnet 11a and points to one side of magnet 11a, which is the left side in the figure; the pole direction of magnet 11c points to the weak magnetic side of the magnet unit 1, which is the lower side in the figure.

[0087] In some embodiments, as Figure 10 As shown, the magnet unit 1 includes five magnets 11, which are magnet 11a, magnet 11b, magnet 11c, magnet 11d, magnet 11e and magnet 11f. Magnet 11a, magnet 11b, magnet 11c, magnet 11d, magnet 11e and magnet 11f are arranged in sequence; the polarity of magnet 11b points to the weak magnetic side of the magnet unit 1, that is, the lower side in the figure; the polarity of magnet 11a points to the weak magnetic side of magnet 1 ... The pole direction of magnet 11e is perpendicular to that of magnet 11d and points to the side away from magnet 11d, which is the left side in the figure; the pole direction of magnet 11c is perpendicular to that of magnet 11b and points to the side away from magnet 11b, which is the right side in the figure; the pole direction of magnet 11d points to the strong magnetic side of magnet unit 1, which is the upper side in the figure; the pole direction of magnet 11e is perpendicular to that of magnet 11d and points to the side where magnet 11d is located, which is the left side in the figure.

[0088] In some embodiments, as Figure 11 As shown, Figure 11 Schematic diagram of the structure of the magnetic attraction assembly in the fourth embodiment of the present application. The magnet unit 1 includes two magnets 11, the two magnets 11 are respectively a first magnet 11m and a second magnet 11n. The first magnet 11m includes a first sub-magnet portion 115 and a second sub-magnet portion 116. The first sub-magnet portion 115 and the second sub-magnet portion 116 are an integral structure, and the second sub-magnet portion 116 is located between the first sub-magnet portion 115 and the second magnet 11n. The polarity of the first sub-magnet portion 115 is opposite to that of the second magnet 11n, and the polarity of the second sub-magnet portion 116 is perpendicular to that of the first sub-magnet portion 115.

[0089] Since the first sub-magnet portion 115 and the second sub-magnet portion 116 are an integrated structure, the first magnet 11m has two perpendicular polar directions. Such an arrangement can make the structure of the magnet unit 1 more compact and reduce the number of magnets 11 in the magnet unit 1, thereby improving the assembly efficiency of the magnet unit 1 and further improving the assembly efficiency of the magnetic attraction component.

[0090] In some embodiments, Figure 11As shown, the polarity of the first sub-magnet portion 115 points to the strong magnetic side of the magnet unit 1, that is, the upper side in the figure; the polarity of the second sub-magnet portion 116 is perpendicular to the polarity of the first sub-magnet portion 115, and points to the side where the first sub-magnet portion 115 is located, that is, the left side in the figure; the polarity of the second magnet 11n points to the weak magnetic side of the magnet unit 1, that is, the lower side in the figure.

[0091] Of course, in the magnet unit 1 , the number of magnets 11 is not limited to two, three, or five. More than five magnets 11 may also be provided according to actual conditions.

[0092] The shape of the welding joint 2 is not unique. In some embodiments, such as Figures 8 to 11 As shown, the welded joint 2 is a strip-shaped structure and extends along the joint 12 between the magnets 11. The dimension of the welded joint 2 in the extension direction of the joint 12 is L, and the dimension of the welded joint 2 in the width direction of the joint 12 is W. The welded joint 2 being a strip-shaped structure specifically means that the value of L / W is greater than or equal to 2.

[0093] By setting the welding joint 2 as a strip structure extending along the seam 12, the length of the connection between the magnets 11 in the extension direction of the seam 12 can be increased, which is beneficial to improving the connection strength between the magnets 11 and further beneficial to improving the connection reliability between the repelling magnets 11.

[0094] The strip-shaped welded joint 2 has various forms. For example, in some embodiments, Figures 8 to 11 As shown, the welded joint 2 is a straight strip structure, and the extending direction of the welded joint 2 is parallel to the extending direction of the joint 12, that is, the welding path of the magnet 11 is a straight line during welding.

[0095] In other embodiments, Figure 12 and Figure 13 As shown, Figure 12 This is a structural diagram of the magnetic attraction component in the fifth embodiment of the present application. Figure 13 The sixth embodiment of the present invention is a schematic diagram of the structure of the magnetic attraction assembly. The welding joint 2 is a wavy strip structure. Specifically, along the seam 12, the welding joint 2 is wavy; that is, the welding path of the magnet 11 during welding is a wavy line (i.e., shaking welding), and the wavy line can be a sine curve (such as Figure 13 As shown) or cosine curve, it can also be other irregular fluctuation curves (such as Figure 12 As shown). This arrangement can increase the width of the joint 12 between the magnets 11 (for example Figure 12 and Figure 13 The length of the engagement in the Y direction) is increased, which is beneficial to improving the connection strength between the magnets 11, and further beneficial to improving the connection reliability between the repelling magnets 11.

[0096] Among them, such as Figure 12 and Figure 13 As shown, the welding joint 2 includes a first bend 21 and a second bend 22 , which are alternately arranged along the joint 12 between the magnets 11 , with the first bend 21 bending toward one side of the joint 12 and the second bend 22 bending toward the other side of the joint 12 .

[0097] In some embodiments, as Figure 11 and Figure 12 As shown, along the seam 12, the end of the welded joint 2 is spaced apart from the edge of the magnet 11; for example Figure 12 As shown, the upper end of the welded joint 2 is spaced from the upper edge of the magnet 11 (i.e., the upper first magnet side surface 113), and the lower end of the welded joint 2 is spaced from the lower edge of the magnet 11 (i.e., the lower first magnet side surface 113). This arrangement prevents damage to the edge of the magnet 11 caused by high temperatures during the formation of the welded joint 2 during welding.

[0098] In some embodiments, as Figure 14 and Figure 15 As shown, Figure 14 This is a structural diagram of the magnetic attraction component in the seventh embodiment of the present application. Figure 15 This is a schematic diagram of the structure of the magnetic assembly in the eighth embodiment of the present application. There are multiple welded joints 2, which are spaced apart along the seams 12 between the magnets 11. This arrangement reduces the space occupied by the welded joints 2 in the direction of the seams 12, minimizing deformation of the magnets 11 during welding. It also reduces the effects of high temperatures during the formation of the welded joints 2 on the magnetic properties of the magnets 11.

[0099] Among them, such as Figure 14 and Figure 15 As shown, at the same joint 12, two welding joints 2 can be provided, but it is not limited thereto. Three or more welding joints 2 can also be provided. Figure 14 and Figure 15 As shown, the outline shape of the welded joint 2 can be circular, but is not limited thereto, and can also be elliptical, square, rectangular, or the like.

[0100] In some embodiments, as Figure 15 As shown, the welded joint 2 has a spiral pattern 23 extending from the center of the welded joint 2 to the edge of the welded joint 2. In other words, the welding path of the magnets 11 is a spiral line (i.e., spiral welding). This arrangement can expand the area of ​​the welded joint 2, thereby making the connection between the magnets 11 more secure and improving the reliability of the connection between the magnets 11.

[0101] Among them, such as Figure 15 As shown, the lines 23 are traces of the welding path left after welding. For example, when the magnet 11 is laser welded, the lines 23 are traces of the path left after laser welding.

[0102] In some embodiments, as Figure 16 As shown, Figure 16 This is a schematic diagram of the structure of the magnetic attraction assembly in the ninth embodiment of the present application. The welded joint 2 extends through the magnet unit 1 along the depth direction of the joint 12 (e.g., the X direction in the figure). In other words, when welding the magnet 11, the welding path is arranged in a circuitous manner between the two ends of the joint 12 in the length direction (i.e., overlap welding), so that the magnet 11 in the depth direction of the joint 12 can be completely welded.

[0103] The welding joint 2 may penetrate the magnet unit 1 along the first direction X or along the height direction of the magnet unit 1 . The height direction of the magnet unit 1 is perpendicular to the first direction X and the arrangement direction Y of the magnets 11 .

[0104] In some embodiments, as Figure 17 As shown, Figure 17 FIG1 is a schematic diagram of the structure of the magnetic attraction assembly in the tenth embodiment of the present application. The magnetic attraction assembly further includes a magnet fixing frame 3, which is provided with a receiving groove 31, the bottom wall of which is covered with a magnetic conductive sheet 32, and the magnet unit 1 is at least partially disposed in the receiving groove 31.

[0105] By placing the magnet unit 1 in the receiving groove 31, the receiving groove 31 can limit the magnet unit 1, so that the magnets 11 of the magnet unit 1 can be more tightly combined, thereby preventing separation of the magnets 11. By providing the magnetic guide sheet 32, the magnetic flux lines of the multiple magnets 11 in the magnet unit 1 can be guided to a predetermined path, thereby avoiding the loss of magnetic force of the magnets 11.

[0106] In some embodiments, as Figure 17 As shown, an adhesive layer 33 is provided between the magnet unit 1 and the bottom wall of the receiving groove 31. This allows the magnet unit 1 to be fixed in the receiving groove 31 more firmly.

[0107] The bonding layer 33 may be a glue layer, such as a thermosetting glue layer.

[0108] In addition to the Halbach array, the magnet unit 1 in the embodiment of the present application can also be other arrays with repelling magnets 11. In some embodiments, such as Figure 18 As shown, Figure 18Schematic diagram of the structure of the magnetic attraction assembly in the eleventh embodiment of the present application. In the magnet unit 1, each magnet 11 includes two magnet end faces 117 arranged in opposite directions, and a first magnet side face 113 and a second magnet side face 114 connected between the two magnet end faces 117, and the polarity of each magnet 11 is the same and one of the magnet end faces 117 points to the other magnet end face 117. Along the first direction X, the first magnet side face 113 is respectively located at the opposite ends of the magnet 11, and the first direction X is perpendicular to the arrangement direction Y of the magnets 11 in the magnet unit 1; along the arrangement direction Y of the magnets 11, the second magnet side face 114 is respectively located at the opposite ends of the magnet 11, and in two adjacent magnets 11, the second magnet side faces 114 of the magnets 11 are connected.

[0109] Of course, magnet 11 is not limited to Figure 18 In the structure shown, the magnet 11 may also adopt other shapes according to actual conditions.

[0110] In some embodiments, as Figure 18 As shown, in two adjacent magnets 11, the joint 12 between the first magnet side surfaces 113 of the magnets 11 has a welded joint 2. This arrangement can reduce the impact of high temperatures and the like on the working surface of the magnet unit 1 (the surface with the magnetic poles, i.e., the magnet end surface 117) during welding, thereby reducing the impact of welding on the magnetic properties of the magnet unit 1.

[0111] In some embodiments, as Figure 19 As shown, Figure 19 This is a structural diagram of the magnetic attraction assembly in the twelfth embodiment of the present application. There are multiple magnet units 1, the polar directions of the magnets 11 in two adjacent magnet units 1 are opposite, and the joint 12 between the first magnet side surfaces 113 of the two adjacent magnet units 1 has a welding joint 2. By providing a welding joint 2 at the joint 12 between the first magnet side surfaces 113 of the two adjacent magnet units 1, the two adjacent magnet units 1 are connected by welding + magnetic attraction, which can make the connection between the two adjacent magnet units 1 more firmly, thereby improving the connection reliability between the magnet units 1.

[0112] Among them, such as Figure 19 As shown, the number of the magnet units 1 is two, but it is certainly not limited thereto, and the number of the magnet units 1 may also be three or more.

[0113] Figure 20 Schematic diagram of the assembly process of the magnetic attraction assembly in some embodiments of the present application. The assembly method of the magnetic attraction assembly includes:

[0114] S1, such as Figure 20As shown in (1) to (4), two adjacent and repelling magnets 11 in the magnet unit 1 of the magnetic attraction assembly are welded together; wherein the magnet unit 1 includes a plurality of magnets 11, and the plurality of magnets 11 of the magnet unit 1 are placed on the carrying surface 60 of the carrier 6.

[0115] By welding two adjacent, repelling magnets 11 together, the connection between the repelling magnets 11 becomes tighter and stronger, thereby improving the connection reliability between the repelling magnets 11 and ensuring the normal operation of the magnetic assembly. At the same time, welding the repelling magnets 11 together eliminates time-consuming processes such as baking, thereby improving the assembly efficiency of the magnetic assembly.

[0116] In addition, the two repelling magnets 11 can be welded together after the two repelling magnets 11 are connected, thus avoiding Figure 6 The illustrated assembly method solves the problem that the middle magnet 021 cannot be assembled due to glue overflow, thereby resulting in better assembly consistency of the magnet unit 1 .

[0117] In some embodiments, as Figure 20 As shown, the magnet unit 1 is a Halbach array, and each magnet 11 includes a first end face 111 and a second end face 112 arranged opposite to each other, and a first magnet side face 113 connected between the first end face 111 and the second end face 112, and the first end face 111 is located on the strong magnetic side of the magnet unit 1, and the second end face 112 is located on the weak magnetic side of the magnet unit 1; along the first direction X, the first magnet side face 113 is respectively located at the opposite ends of the magnet 11, and the first direction X is perpendicular to the arrangement direction Y of the magnets 11 in the magnet unit 1.

[0118] Welding two adjacent and repelling magnets 11 in the magnet unit 1 of the magnetic attraction assembly, including:

[0119] S11, such as Figure 20 As shown in (1) to (3), welding is performed at the joint of the welding surfaces of two adjacent magnets 11; wherein the welding surface is located on the side of the magnet 11 away from the bearing surface 60, and the welding surface is the second end surface 112.

[0120] The welding surface may be the first magnet side surface 113 in addition to the second end surface 112. Figure 20 As shown in (2) and (3), after the multiple magnets 11 are arranged on the bearing surface 60 of the carrier 6, the multiple magnets 11 can be pushed and tightened by the push rod 5, so that the welding surfaces of two adjacent magnets 11 are connected to facilitate subsequent welding.

[0121] By welding the joints of the welding surfaces of two adjacent magnets 11, the welding surface is the second end face 112 or the side face 113 of the first magnet. This can reduce the impact of high temperature and the like on the working surface (the surface on the strong magnetic side) of the magnet unit 1 during welding, thereby reducing the impact of welding on the magnetism of the magnet unit 1.

[0122] In some embodiments, after step S11, the method further includes:

[0123] S2, such as Figure 20 As shown in (5), the magnet unit 1 is placed in the receiving groove 31 of the magnet fixing frame 3; wherein the first end surface 111 of the magnet 11 faces away from the bottom wall of the receiving groove 31, and an adhesive layer 33 is provided between the magnet unit 1 and the bottom wall of the receiving groove 31. The adhesive layer 33 can be an adhesive layer, such as a thermosetting adhesive layer.

[0124] By placing the magnet unit 1 in the receiving groove 31 of the magnet fixing frame 3, the receiving groove 31 can limit the magnet unit 1, so that the magnets 11 of the magnet unit 1 can be more tightly combined, thereby avoiding separation of the magnets 11. In addition, after welding the repelling magnets 11 in the magnet unit 1, they are placed in the receiving groove 31, which can avoid Figure 5 In the assembly method, the first adhesive layer 031 and the second adhesive layer 032 made of different materials come into contact and react, resulting in the first adhesive layer 031 not being cured and causing the magnet unit 1 to be detached.

[0125] It should be noted that: Figure 5 The material of the second adhesive layer 032 is usually AB glue (AB glue; a two-liquid mixed hardening adhesive), anaerobic adhesive, etc. The material of the first adhesive layer 031 is thermosetting adhesive, which is a different type. The second adhesive layer 032 and the first adhesive layer 031 are made of different materials. If the second adhesive layer 032 comes into contact with the first adhesive layer 031 before it is fully cured, glue poisoning will occur, causing the first adhesive layer 031 to not cure, which can easily cause the magnet unit 1 to detach.

[0126] In some embodiments, as Figure 20 As shown, the carrier 6 includes a carrier body 61 and a movable carrier 62. The carrier body 61 is provided with a receiving hole 611. The movable carrier 62 is arranged in the receiving hole 611 and can be separated from the carrier body 61. The movable carrier 62 is used to set the magnet unit 1.

[0127] The above step S2 includes:

[0128] S21, such as Figure 20 As shown in (5), the movable carrier 62 is separated from the carrier body 61.

[0129] S22, such as Figure 20As shown in (5), the movable carrier 62 is moved to the top of the magnet fixing frame 3 and the movable carrier 62 is rotated by a certain angle so that the first end face 111 of the magnet 11 is away from the bottom wall of the accommodating groove 31 on the magnet fixing frame 3.

[0130] Among them, such as Figure 20 As shown, if the welding surface is the second end surface 112, the movable carrier 62 needs to be rotated 180 degrees to achieve the flipping of the magnet unit 1, so that the first end surface 111 of the magnet 11 is away from the bottom wall of the receiving groove 31. If the welding surface is the first magnet side surface 113, the movable carrier 62 needs to be rotated 90 degrees so that the first end surface 111 of the magnet 11 is away from the bottom wall of the receiving groove 31.

[0131] S23 , separating the movable carrier 62 from the magnet unit 1 , so as to place the magnet unit 1 in the receiving groove 31 of the magnet fixing frame 3 .

[0132] By adopting the above method, the transfer mechanism can transfer the magnet unit 1 through the movable carrier 62, so that the transfer mechanism can avoid direct contact with the magnet unit 1, thereby reducing the damage to the magnet unit 1 caused by external forces during the process of placing the magnet unit 1 on the magnet fixing frame 3.

[0133] In some embodiments, as Figure 21 As shown, Figure 21 The figure is a schematic diagram of the structure of the movable platform 62 in some embodiments of the present application. The movable platform 62 includes a platform body 621 and magnetic adsorption members 622 movably disposed on opposite sides of the platform body 621. The magnet unit 1 includes three magnets 11: the central magnet 11 is located on the platform body 621, while the magnets 11 on both sides are partially located on the platform body 621 and the remaining portions are located on the corresponding magnetic adsorption members 622. Each magnetic adsorption member 622 is attracted to a corresponding magnet 11.

[0134] S23, separating the movable carrier 62 from the magnet unit 1, including:

[0135] S231, such as Figure 20 (5) and Figure 21 As shown, the position of each magnetic adsorption component 622 relative to the carrier body 621 is adjusted so that each magnetic adsorption component 622 is separated from the corresponding magnet 11 .

[0136] The magnetic adsorption member 622 can be slidably connected to the platform body 621 along the height direction H of the platform body 621, such as by a slide rail. The magnetic adsorption member 622 can slide relative to the platform body 621 to adjust its position relative to the platform body 621.

[0137] By adjusting the position of each magnetic adsorption component 622 relative to the carrier body 621, the position of each magnetic adsorption component 622 relative to the carrier body 621 can be adjusted simultaneously; the position of each magnetic adsorption component 622 relative to the carrier body 621 can also be adjusted in sequence. For example, the magnetic adsorption component 622 on the left side can be slid relative to the carrier body 621 first to separate the magnetic adsorption component 622 on the left side from the magnet 11 on the left side; and then the magnetic adsorption component 622 on the right side can be slid relative to the carrier body 621 to separate the magnetic adsorption component 622 on the right side from the magnet 11 on the right side. In this way, the magnet unit 1 is separated from the carrier body 621 under the action of gravity.

[0138] By adopting the above method, by adjusting the position of each magnetic adsorption component 622 relative to the carrier body 621, the magnet unit 1 can be separated from the carrier body 621. In this way, the transfer mechanism does not need to directly contact the magnet unit 1 during the separation process, thereby reducing the damage to the magnet unit 1 caused by external forces during the separation of the magnet unit 1 from the movable carrier 62.

[0139] In some embodiments, before welding two adjacent and repelling magnets 11 in the magnet unit 1 of the magnetic attraction assembly, the method further includes:

[0140] like Figure 20 As shown in (2) and (3), a protective cover plate 7 is covered on the plurality of magnets 11; wherein, the cover plate 7 is provided with an avoidance hole 71, and the avoidance hole 71 is opposite to the welded portion on the magnet 11.

[0141] By covering the multiple magnets 11 with protective covers 7, the covers 7 can protect the non-welded areas of the magnets 11, thereby preventing the welding equipment from damaging the non-welded areas of the magnets 11 during welding. At the same time, the avoidance holes 71 are opposite the welded areas of the magnets 11, so that the welding equipment can accurately locate the welded areas during welding.

[0142] The features that appear in the embodiment of the assembly method of the magnetic attraction component and are the same or similar to those in the above-mentioned product embodiment of the magnetic attraction component can be specifically referred to the description in the above-mentioned product embodiment of the magnetic attraction component and will not be repeated here.

[0143] like Figure 22 and Figure 23 As shown, Figure 22 is a structural diagram of the camera 100 in some embodiments of the present application, Figure 23 for Figure 22 AA cross-sectional view of the camera 100. The camera 100 includes an optical lens 200, a photosensitive element 300, and a linear motor 400.

[0144] The linear motor 400 includes a stator 410 , a mover 420 , a driving coil 430 and a magnetic assembly 440 in any of the above embodiments. The driving coil 430 is disposed on the stator 410 , and the magnetic assembly 440 is disposed on the mover 420 .

[0145] The optical lens 200 is fixedly connected to the mover 420 of the linear motor 400 . The photosensitive element 300 is disposed on the image side of the optical lens 200 . The photosensitive element 300 is relatively fixed to the stator 410 of the linear motor 400 along the axial direction of the optical lens 200 .

[0146] The linear motor 400 may be a voice coil motor or other types of linear motors, which are not specifically limited here.

[0147] When the linear motor 400 is working, the driving coil 430 is energized, and the magnetic field of the magnetic attraction component 440 interacts with the driving coil 430, causing the mover 420 to move axially along the optical lens 200, thereby driving the optical lens 200 to move axially to achieve focusing of the camera 100.

[0148] Among them, such as Figure 22 As shown, the photosensitive element 300 is disposed on the circuit board 510, and the photosensitive surface of the photosensitive element 300 faces the light-emitting end of the optical lens 200 (eg Figure 22 The optical sensor 300 is provided at the lower end of the optical lens 200 to receive light passing through the optical lens 200. The photosensitive element 300 can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS), which is not specifically limited here.

[0149] In some embodiments, as Figure 22 As shown, the stator 410 is a shell structure and includes a first stator end wall 411, a second stator end wall 412, and a stator side wall 413 connected between the first end wall and the second end wall. The first stator end wall 411, the second stator end wall 412 and the stator side wall 413 form a shell cavity 414. A coil groove 4131 is provided on the inner surface of the stator side wall 413, and the drive coil 430 is arranged in the coil groove 4131.

[0150] The mover 420 is a block-shaped structure and is arranged in the shell cavity 414. The mover 420 includes two mover end walls 421 arranged back to back, and a mover side wall 422 connected between the two mover end walls 421. The mover side wall 422 is provided with a placement groove 4221 at the position corresponding to the drive coil 430, and the magnetic attraction component 440 is arranged in the placement groove 4221.

[0151] A lens mounting hole 4211 is provided on the mover end wall 421 , and the optical lens 200 is installed in the lens mounting hole 4211 . A lens avoidance hole 4111 is provided on the first stator end wall 411 at a position corresponding to the lens mounting hole 4211 , and the lens avoidance hole 4111 is used to avoid the optical lens 200 .

[0152] In some embodiments, as Figure 22 and Figure 23 As shown, magnetic assemblies 440 are respectively provided on the sidewalls 422 of the mover 420 on opposite sides, and drive coils 430 are respectively provided on the stator sidewalls 413 on opposite sides of the stator 410. The position of each magnetic assembly 440 corresponds to the drive coil 430 on one side of the stator sidewall 413. With this arrangement, when the linear motor 400 is in operation, the driving force is applied to the opposite sides of the mover 420, thereby balancing the force on the mover 420 and making the movement of the mover 420 more stable.

[0153] In some embodiments, as Figure 22 As shown, a guide post 4121 is provided on the second stator end wall 412. The guide post 4121 extends axially along the lens mounting hole 421. A guide hole 423 is provided on the mover end wall 421 on the side near the second stator end wall 412. The guide post 4121 slidably engages with the guide hole 423. With this arrangement, when the linear motor 400 is operating, the guide post 4121 can guide the mover 420, thereby ensuring smoother movement of the mover 420.

[0154] In some embodiments, as Figure 22 As shown, there are two guide posts 4121, which are located on opposite sides of the lens mounting hole 4211. There are two guide holes 423, and each guide post 4121 slidably engages with a corresponding guide hole 423. This arrangement can keep the mover 420 balanced, thereby making the movement of the mover 420 more stable.

[0155] Of course, the mover 420 and stator 410 are not limited to the above configuration and can be configured in other configurations according to actual conditions. The drive coil 430 and magnetic assembly 440 can also be positioned interchangeably, i.e., the drive coil 430 is positioned on the mover 420 and the magnetic assembly 440 is positioned on the stator 410.

[0156] In some embodiments, as Figure 22As shown, the stator side wall 413 and the first stator end wall 411 are integrally structured, and the second stator end wall 412 is detachably connected to the stator side wall 413. Thus, if at least one of the mover 420, the drive coil 430, and the magnetic assembly 440 within the housing cavity 414 is damaged, the second stator end wall 412 can be disassembled from the stator side wall 413, thereby facilitating repair and replacement of the mover 420, the drive coil 430, and the magnetic assembly 440 within the housing cavity 414.

[0157] The second stator end wall 412 and the stator side wall 413 may be detachably connected by screwing, clamping, bonding, or the like, which is not specifically limited herein.

[0158] In some embodiments, as Figure 22 As shown, the camera 100 further includes a filter 600, which is disposed between the optical lens 200 and the photosensitive element 300. The filter 600 is used to filter out unnecessary wavelengths in the light, thereby preventing the photosensitive element 300 from generating false colors or ripples, thereby improving its effective resolution and color reproduction. For example, Figure 22 As shown, the filter 600 is an infrared filter 600 .

[0159] In some embodiments, as Figure 22 As shown, the camera 100 further includes a mounting base 520, which is fixedly connected to the stator 410. The mounting base 520 is provided with a filter mounting hole 521, and the filter 600 is mounted in the filter mounting hole 521. Of course, the filter 600 is not limited to being mounted on the mounting base 520, but can also be mounted on the stator 410 or the optical lens 200.

[0160] The mounting seat 520 may be fixedly connected to the stator 410 by screwing, clamping, bonding, or the like, which is not specifically limited here.

[0161] The magnetic component 440 in the embodiment of the present application is not limited to use on the linear motor 400, but can also be used on magnetic devices, such as magnetic keyboards, magnetic brackets, suction devices of household appliances (such as refrigerators), magnetic glass wipers, etc.

[0162] like Figure 24 and Figure 25 As shown, Figure 24 This is a schematic diagram of the back of an electronic device in some embodiments of the present application. Figure 25 for Figure 24 The electronic device is a mobile phone, and includes a housing 700 and a camera 100 as shown in any of the above embodiments. The camera 100 is disposed on the housing 700.

[0163] In some embodiments, as Figure 25As shown, the housing 700 includes a middle frame 710 (also known as a front shell or front frame) and a back cover 720 (also known as a battery cover). The display screen 800 and the back cover 720 are respectively mounted on opposite sides of the middle frame 710. The back cover 720 and the middle frame 710 enclose a first accommodation space 730. The camera 100 is a rear-mounted camera 100 and is disposed in the first accommodation space 730. The light input end of the optical lens 200 of the camera 100 is disposed opposite to the camera window 750 provided on the back cover 720 to ensure that the optical lens 200 can receive light emitted by the scene being photographed outside the housing 700.

[0164] Among them, the camera window 750 can be directly set on the back cover 720; Figure 25 As shown, the camera window 750 can also be set on the camera decoration 760. Specifically, the camera decoration 760 is set on the back cover 720. One side of the camera decoration 760 has an opening, and a protective cover is provided at the opening. The light-transmitting area of ​​the protective cover is the camera window 750. Figure 25 As shown, the camera decoration 760 can be an integrated structure with the back cover 720, but it is not limited to this. The camera decoration 760 can also be designed to be separate from the back cover 720.

[0165] The display screen 800 and the middle frame 710 form a second accommodating space 740 , in which electronic components such as a motherboard are arranged. The motherboard is connected to the display screen 800 and the camera 100 through flexible circuit boards.

[0166] The middle frame 710 and the back cover 720 may be detachably connected or integrally formed, which is not specifically limited herein. The display screen 800 may be a liquid crystal display screen 800 or an OLED (Organic Light-Emitting Diode) display screen 800, which is not specifically limited herein.

[0167] The camera 100 in the embodiment of the present application can be installed in the upper left corner, the middle of the upper part, or the upper right corner of the back of the electronic device, without specific limitation. In addition to being installed on the back of the electronic device and used as a rear camera, the camera 100 can also be used as a front camera of the electronic device.

[0168] The electronic devices in the embodiments of the present application are not limited to mobile phones, but can also be electronic devices with cameras such as tablet computers, laptop computers, wearable devices (such as smart watches), etc. Other types of electronic devices can be specifically set up with reference to the structure of the mobile phone embodiment, and will not be described in detail here.

[0169] The types of hatching in the drawings of this application are for the purpose of distinguishing different components and should not be understood as limiting the materials of the components. The drawings of this application are for the purpose of illustrating the structural composition and are not shown to scale with the actual product.

[0170] Although the description of this application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to these embodiments. On the contrary, the purpose of introducing the application in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of this application. In order to provide a deep understanding of this application, the above description will contain many specific details. This application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of this application, some specific details will be omitted in the description. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other unless there is a conflict.

[0171] In the embodiments of this application, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of the features.

[0172] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0173] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of the present application, such as "up", "down", "left", "right", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0174] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A magnetic attraction component, characterized in that: The invention comprises a magnet unit (1), wherein the magnet unit (1) comprises a plurality of magnets (11), wherein two adjacent and mutually repelling magnets (11) are welded together; a welding joint (2) is provided at the joint of the two adjacent and mutually repelling magnets (11), and the welding joint (2) connects the two adjacent and mutually repelling magnets (11) together; The magnet (11) comprises a working surface and a welding surface, wherein the working surface is the surface of the magnet (11) located on the strong magnetic side of the magnet unit (1), or the working surface is the surface of the magnet (11) having magnetic poles; The welding surface is located on the side opposite to the working surface; or, the welding surface is located on the side adjacent to the working surface; In two adjacent magnets (11), the joint between the welding surfaces of the magnets (11) has the welding joint (2).

2. The magnetic attraction assembly according to claim 1, characterized in that: The magnet unit (1) is a Halbach array, and each of the magnets (11) includes a first end face (111), a second end face (112) and a first magnet side face (113) connected between the first end face (111) and the second end face (112), wherein the first end face (111) is a surface of the magnet (11) located on a strong magnetic side of the magnet unit (1), and the second end face (112) is a surface of the magnet (11) located on a weak magnetic side of the magnet unit (1); Along a first direction (X), the first magnet side surfaces (113) are respectively located at opposite ends of the magnet (11), and the first direction (X) is perpendicular to an arrangement direction (Y) of the magnets (11) in the magnet unit (1); The first end surface (111) is the working surface, and at least one of the second end surface (112) and the first magnet side surface (113) is the welding surface; In two adjacent magnets (11), the joint of the first magnet side surfaces (113) of the magnets (11) has the welded joint (2), and / or the joint of the second end surfaces (112) of the magnets (11) has the welded joint (2).

3. The magnetic attraction assembly according to claim 2, characterized in that: The magnet unit (1) comprises two magnets (11), the two magnets (11) being a first magnet (11m) and a second magnet (11n), the first magnet (11m) comprising a first sub-magnet portion (115) and a second sub-magnet portion (116), the first sub-magnet portion (115) and the second sub-magnet portion (116) being an integral structure, and the second sub-magnet portion (116) being located between the first sub-magnet portion (115) and the second magnet (11n), the polarity of the first sub-magnet portion (115) being opposite to the polarity of the second magnet (11n), and the polarity of the second sub-magnet portion (116) being perpendicular to the polarity of the first sub-magnet portion (115).

4. The magnetic attraction assembly according to claim 1, characterized in that: In the magnet unit (1), each magnet (11) comprises two magnet end faces (117) disposed opposite to each other, and a first magnet side face (113) connected between the two magnet end faces (117), and the polarity of each magnet (11) is the same and points from one magnet end face (117) to the other magnet end face (117); Along a first direction (X), the first magnet side surfaces (113) are respectively located at opposite ends of the magnet (11), and the first direction (X) is perpendicular to an arrangement direction (Y) of the magnets (11) in the magnet unit (1); The magnet end surface (117) is the working surface, and the first magnet side surface (113) is the welding surface; In two adjacent magnets (11), the joint between the first magnet side surfaces (113) of the magnets (11) has the welding joint (2).

5. The magnetic attraction assembly according to claim 4, characterized in that: The number of the magnet units (1) is plural, and the plural magnet units (1) are arranged along the arrangement direction (Y), the polar directions of the magnets (11) in two adjacent magnet units (1) are opposite, and the joints of the first magnet side surfaces (113) of the two adjacent magnet units (1) have the welding joint (2).

6. The magnetic attraction assembly according to any one of claims 1 to 5, characterized in that: The welded joint (2) is a strip-shaped structure and extends along the joint (12) between the magnets (11).

7. The magnetic attraction assembly according to claim 6, characterized in that: Along the seam (12), the welded joint (2) is wavy.

8. The magnetic attraction assembly according to claim 6 or 7, characterized in that: Along the seam (12), the end of the welded joint (2) is spaced apart from the edge of the magnet (11).

9. The magnetic attraction assembly according to any one of claims 1 to 5, characterized in that: There are multiple welding joints (2), and the multiple welding joints (2) are arranged at intervals along the seams (12) between the magnets (11).

10. The magnetic attraction assembly according to claim 9, characterized in that: The welding joint (2) has spiral lines (23), and the lines (23) extend from the central area of ​​the welding joint (2) to the edge area of ​​the welding joint (2).

11. The magnetic attraction assembly according to any one of claims 1 to 10, characterized in that: The magnetic attraction assembly further comprises a magnet fixing frame (3), the magnet fixing frame (3) being provided with a receiving groove (31), the bottom wall of the receiving groove (31) being covered with a magnetic conductive sheet (32), and the magnet unit (1) being at least partially disposed in the receiving groove (31).

12. A linear motor, characterized in that: The invention comprises a stator (410), a mover (420), a drive coil (430) and a magnetic attraction component (440) according to any one of claims 1 to 11, wherein the drive coil (430) is arranged on one of the stator (410) and the mover (420), and the magnetic attraction component (440) is arranged on the other of the stator (410) and the mover (420).

13. A camera, characterized in that: The invention comprises an optical lens (200), a photosensitive element (300), and a linear motor (400) according to claim 12, wherein the optical lens (200) is fixedly connected to the mover (420) of the linear motor (400), the photosensitive element (300) is arranged on the image side of the optical lens (200), and along the axial direction of the optical lens (200), the photosensitive element (300) and the stator (410) of the linear motor (400) are relatively fixed.

14. An electronic device, characterized in that: The invention comprises a housing (700), and the camera (100) described in claim 13, wherein the camera (100) is arranged on the housing (700).

15. A method for assembling a magnetic component, characterized in that: include: Welding two adjacent and repelling magnets (11) in a magnet unit (1) of a magnetic attraction assembly so that a welded joint (2) is formed at the junction of the two adjacent and repelling magnets (11); The magnet unit (1) comprises a plurality of magnets (11), and the plurality of magnets (11) of the magnet unit (1) are placed on a carrying surface (60) of a carrying body (6); the magnet (11) comprises a working surface and a welding surface, wherein the working surface is the surface of the magnet (11) located on the strong magnetic side of the magnet unit (1); the welding surface is located on the side opposite to the working surface; or, the welding surface is located on the side adjacent to the working surface; and in two adjacent magnets (11), the joint of the welding surfaces of the magnets (11) has the welding joint (2).

16. The method for assembling a magnetic attraction assembly according to claim 15, wherein: The magnet unit (1) is a Halbach array, and each of the magnets (11) includes a first end face (111), a second end face (112) disposed opposite to each other, and a first magnet side face (113) connected between the first end face (111) and the second end face (112), and the first end face (111) is located on the strong magnetic side of the magnet unit (1), and the second end face (112) is located on the weak magnetic side of the magnet unit (1); along a first direction (X), the first magnet side face (113) is respectively located at opposite ends of the magnet (11), and the first direction (X) is perpendicular to the arrangement direction (Y) of the magnets (11) in the magnet unit (1); Welding two adjacent and repelling magnets (11) in a magnet unit (1) of a magnetic attraction assembly, comprising: Welding at the joints of the welding surfaces of two adjacent magnets (11); The welding surface is located on a side of the magnet (11) facing away from the bearing surface (60), and the welding surface is the second end surface (112) or the first magnet side surface (113).

17. The method for assembling a magnetic attraction assembly according to claim 16, wherein: The carrier (6) comprises a carrier body (61) and a movable carrier (62); the carrier body (61) is provided with a receiving hole (611); the movable carrier (62) is arranged in the receiving hole (611) and can be separated from the carrier body (61); the movable carrier (62) is used to be provided with the magnet unit (1); After welding the joints of the welding surfaces of two adjacent magnets (11), the method further comprises: Separating the movable carrier (62) from the carrier body (61); The movable carrier (62) is moved to the top of the magnet fixing frame (3) and the movable carrier (62) is rotated at a certain angle so that the first end surface (111) of the magnet (11) is away from the bottom wall of the accommodating groove (31) on the magnet fixing frame (3); The movable carrier (62) is separated from the magnet unit (1) to place the magnet unit (1) in the receiving groove (31).

18. The method for assembling a magnetic attraction assembly according to claim 17, wherein: The movable carrier (62) includes a carrier body (621) and magnetic adsorption members (622) movably arranged on opposite sides of the carrier body (621); in the magnet unit (1), the number of the magnets (11) is three, the magnet (11) located in the middle is located on the carrier body (621), and a part of the magnets (11) located on both sides is located on the carrier body (621), and the other part is located on the corresponding magnetic adsorption member (622); each magnetic adsorption member (622) is attracted to the corresponding magnet (11); Separating the movable carrier (62) from the magnet unit (1) comprises: The position of each magnetic adsorption component (622) relative to the carrier body (621) is adjusted so that each magnetic adsorption component (622) is separated from the corresponding magnet (11).

19. The method for assembling a magnetic attraction assembly according to any one of claims 15 to 18, wherein: Before welding two adjacent and repelling magnets (11) in the magnet unit (1) of the magnetic attraction assembly, the method further comprises: Covering the plurality of magnets (11) with a protective cover plate (7); Wherein, a avoidance hole (71) is provided on the cover plate, and the avoidance hole (71) is opposite to a welded portion on the magnet (11).

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