Magnetic attraction assembly, assembling method thereof, linear motor, camera and electronic equipment

Abstract

The invention relates to the technical field of bendable circuit boards, provides a magnetic attraction assembly and an assembling method thereof, a linear motor, a camera and electronic equipment, and can solve the problems of low connection reliability between two repellent magnets in a magnetic attraction assembly and low assembling efficiency of the magnetic attraction assembly in related technologies. The magnetic attraction assembly comprises a magnet unit, the magnet unit comprises a plurality of magnets, and every two adjacent and repellent magnets in the magnets are welded. The method can be applied to electronic equipment such as a mobile phone.

Description

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

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on November 27, 2023, with application number 202311602953.0 and application name “Magnetic component and assembly method thereof, linear motor, camera, electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] 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

[0003] 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.

[0004] Summary of the Invention

[0005] 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.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] First, embodiments of the present application provide a magnetic attraction assembly comprising a magnet unit, wherein the magnet unit comprises 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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

[0031] FIG1 is a distribution diagram of the magnetic flux lines of a bar magnet;

[0032] FIG2 is a diagram showing the magnetic flux distribution of a Halbach array;

[0033] FIG3 is a diagram showing the magnetic flux distribution of another Halbach array;

[0034] FIG4 is a schematic structural diagram of a magnetic attraction component in the related art;

[0035] FIG5 is a schematic diagram of an assembly process of the magnetic attraction assembly in FIG4 ;

[0036] FIG6 is a schematic diagram of another assembly process of the magnetic attraction assembly in FIG4 ;

[0037] FIG7 is a schematic structural diagram of the magnetic attraction assembly in the first embodiment of the present application;

[0038] FIG8 is a bottom view of the magnetic attraction assembly shown in FIG7 ;

[0039] FIG9 is a schematic structural diagram of a magnetic attraction assembly in a second embodiment of the present application;

[0040] FIG10 is a schematic structural diagram of a magnetic attraction assembly in a third embodiment of the present application;

[0041] FIG11 is a schematic structural diagram of a magnetic attraction assembly in a fourth embodiment of the present application;

[0042] FIG12 is a schematic structural diagram of a magnetic attraction assembly in a fifth embodiment of the present application;

[0043] FIG13 is a schematic structural diagram of a magnetic attraction assembly in a sixth embodiment of the present application;

[0044] FIG14 is a schematic structural diagram of a magnetic attraction assembly according to a seventh embodiment of the present application;

[0045] FIG15 is a schematic structural diagram of a magnetic attraction assembly according to an eighth embodiment of the present application;

[0046] FIG16 is a schematic structural diagram of a magnetic attraction assembly according to a ninth embodiment of the present application;

[0047] FIG17 is a schematic structural diagram of a magnetic attraction assembly according to a tenth embodiment of the present application;

[0048] FIG18 is a schematic structural diagram of a magnetic attraction assembly in the eleventh embodiment of the present application;

[0049] FIG19 is a schematic structural diagram of a magnetic attraction assembly in the twelfth embodiment of the present application;

[0050] FIG20 is a schematic diagram of the assembly process of a magnetic attraction assembly in some embodiments of the present application;

[0051] FIG21 is a schematic structural diagram of a movable platform in some embodiments of the present application;

[0052] FIG22 is a schematic diagram of the structure of a camera in some embodiments of the present application;

[0053] FIG23 is an AA cross-sectional view of the camera in FIG22 ;

[0054] FIG24 is a schematic diagram of the back side of an electronic device in some embodiments of the present application;

[0055] FIG25 is a cross-sectional view taken along line BB of the electronic device shown in FIG24 . DETAILED DESCRIPTION

[0056] The technical solutions in some embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0057] 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.

[0058] As shown in Figure 1, Figure 1 shows the distribution of magnetic flux lines of 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 figure represent the magnet's polarity (i.e., the direction of the magnetic pole), which is the direction from the south pole to the north pole inside the magnet. When the magnet is magnetizable, the polarity of the magnet can also be called the magnetization direction. The dotted lines in the figure represent the distribution of magnetic flux lines of the magnetic field formed outside the magnet, which start from the north pole outside the magnet and return to the south pole.

[0059] The Halbach array is a magnetic structure that is a near-ideal structure in engineering. Its principle is to use magnets arranged according to a certain pattern to enhance the magnetic field strength in a unit direction, so as to achieve the goal of generating the strongest magnetic field with the least amount of magnets. As shown in Figure 2, Figure 2 is a magnetic flux distribution diagram of a Halbach array. The Halbach array includes 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 influence 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 of the Halbach array with stronger magnetic field strength is called the strong magnetic side, and the side with weaker magnetic field strength is called the weak magnetic side. For example, the upper side of the Halbach array in Figure 2 is the strong magnetic side, and the lower side is the weak magnetic side.

[0060] Of course, the Halbach array is not limited to the arrangement shown in Figure 2. For example, Figure 3 shows the magnetic flux distribution of another Halbach array. The Halbach array consists of five magnets arranged in sequence, with the five solid arrows in the figure representing the polarity of the five magnets. The magnetic fields generated by the five magnets interact with each other, effectively increasing the magnetic field strength on the upper side of the Halbach array and reducing it on the lower side.

[0061] As shown in Figure 4, Figure 4 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.

[0062] 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.

[0063] As shown in FIG5 , FIG5 is a schematic diagram of an assembly process of the magnetic attraction component in FIG4 . The assembly method of the magnetic attraction component includes the following steps:

[0064] M1. As shown in (1) in FIG. 5 , the plurality of magnets 021 of the magnet unit 02 are disposed on the magnetic conductive sheet 051 of the carrier plate 04 .

[0065] M2. As shown in (2) in FIG5 , glue is applied on the side wall of each magnet 021 .

[0066] M3. As shown in (3) in FIG5 , a magnetic rod 052 is provided on the top of each magnet 021 .

[0067] M4. As shown in (4) in FIG5 , 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 .

[0068] M5. As shown in (5) in FIG. 5 , the magnet unit 02 is disposed 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 .

[0069] As shown in FIG6 , FIG6 is a schematic diagram of another assembly process of the magnetic attraction assembly in FIG4 . The main difference between the assembly method shown in FIG6 and the assembly method shown in FIG5 is that the assembly method shown in FIG6 is to assemble the magnet 021 directly with the magnet fixing frame 01 , as described below: The assembly method of the magnetic attraction assembly includes the following steps:

[0070] N1. As shown in (1) of FIG6 , adhesive is provided at both ends of the receiving groove 011 of the magnet fixing frame 01 .

[0071] N2. As shown in (2) in FIG6 , 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 material between the magnets 021 on both sides and the groove wall of the receiving groove 011 to form a first glue layer 031 .

[0072] N3. As shown in (3) in FIG6 , take out the magnetic isolation jig 06 and apply glue to the middle area of ​​the receiving groove 011 and the side walls of the magnet 021 on both sides.

[0073] N4. As shown in (4) in FIG6 , a middle magnet 021 is placed between the magnets 021 on both sides, and the middle magnet 021 is pressurized by a 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 wall of the receiving groove 011 is formed to form a first glue layer 031.

[0074] 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.

[0075] 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.

[0076] As shown in Figures 7 and 8, Figure 7 is a schematic structural diagram of the magnetic attraction assembly in the first embodiment of the present application, and Figure 8 is a bottom view of the magnetic attraction assembly shown in Figure 7. 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 together.

[0077] 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.

[0078] As shown in Figure 7, 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 and a second magnet side face 114 respectively connected between the first end face 111 and the second end face 112, and the first end face 111 is the surface of the magnet 11 located on the strong magnetic side of the magnet unit 1 (such as the upper side shown in Figure 7), and the second end face 112 is the surface of the magnet 11 located on the weak magnetic side of the magnet unit 1 (such as the lower side shown in Figure 7); as shown in Figure 8, along the first direction X, the first magnet side faces 113 are 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 faces 114 are 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.

[0079] Of course, the magnet 11 is not limited to the structure shown in FIG. 7 , and the magnet 11 may also adopt other shapes according to actual conditions.

[0080] 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.

[0081] In addition, the two repelling magnets 11 can be welded together after the two repelling magnets 11 are in contact with each other, thereby avoiding the problem of the middle magnet 021 being unable to be assembled due to glue overflow in the assembly method shown in Figure 6, thereby improving the assembly consistency of the magnet unit 1.

[0082] In some embodiments, as shown in FIG. 7 and FIG. 8 , a welded joint 2 is formed at the joint of two adjacent and repelling magnets 11 , and the welded joint 2 connects the two adjacent and repelling magnets 11 together.

[0083] 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.

[0084] 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 .

[0085] The location of the weld joint 2 is not unique. In some embodiments, as shown in Figures 7 and 8, the weld joint 2 is located at the junction of the second end surfaces 112 of two adjacent magnets 11. In other words, the weld 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 the welding process, thereby reducing the impact of welding on the magnetism of the magnet unit 1.

[0086] In some embodiments, as shown in Figures 9 and 10, Figure 9 is a schematic structural diagram of the magnetic attraction assembly in the second embodiment of the present application, and Figure 10 is a schematic structural diagram 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 welding joint 2. This arrangement can reduce the impact of high temperature and the like during welding on the working surface of the magnet unit 1, thereby reducing the impact of welding on the magnetism of the magnet unit 1.

[0087] 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.

[0088] There are many ways to set the number of magnets 11 in the magnet unit 1. In some embodiments, as shown in Figure 9, 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.

[0089] In some embodiments, as shown in Figure 10, the magnet unit 1 includes five magnets 11, which are magnet 11a, magnet 11b, magnet 11c, magnet 11d and magnet 11e, respectively. Magnet 11a, magnet 11b, magnet 11c, magnet 11d and magnet 11e are arranged in sequence; the pole direction of magnet 11b points to the weak magnetic side of the magnet unit 1, that is, the lower side in the figure; the pole direction of magnet 11a is perpendicular to the pole direction of magnet 11b and points to the side away from magnet 11b, that is, the left side in the figure; the pole direction of magnet 11c is perpendicular to the pole direction of magnet 11b and points to the side away from magnet 11b, that is, the right side in the figure; the pole direction of magnet 11d points to the strong magnetic side of the magnet unit 1, that is, the upper side in the figure; the pole direction of magnet 11e is perpendicular to the pole direction of magnet 11d and points to the side where magnet 11d is located, that is, the left side in the figure.

[0090] In some embodiments, as shown in FIG11 , FIG11 is a schematic structural diagram of a magnetic attraction assembly in a 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 the polarity of the second magnet 11n, and the polarity of the second sub-magnet portion 116 is perpendicular to the polarity of the first sub-magnet portion 115.

[0091] 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.

[0092] Among them, in some embodiments, as shown in Figure 11, the polar direction 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 polar direction of the second sub-magnet portion 116 is perpendicular to the polar direction 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 polar direction of the second magnet 11n points to the weak magnetic side of the magnet unit 1, that is, the lower side in the figure.

[0093] 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.

[0094] The shape of the welded joint 2 is not unique. In some embodiments, as shown in Figures 8 to 11, 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 strip-shaped structure of the welded joint 2 specifically means that the value of L / W is greater than or equal to 2.

[0095] 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.

[0096] Among them, the strip-shaped welding joint 2 has various forms. For example, in some embodiments, as shown in Figures 8 to 11, the welding joint 2 is a straight strip structure, and the extension direction of the welding joint 2 is parallel to the extension direction of the joint 12, that is, the welding path of the magnet 11 during welding is a straight line.

[0097] In other embodiments, as shown in Figures 12 and 13, Figure 12 is a schematic structural diagram of the magnetic attraction assembly in the fifth embodiment of the present application, and Figure 13 is a schematic structural diagram of the magnetic attraction assembly in the sixth embodiment of the present application. 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., jitter welding), and the wavy line can be a sine curve (as shown in Figure 13) or a cosine curve, or other irregular wavy curves (as shown in Figure 12). Such an arrangement can increase the length of the magnets 11 that are joined in the width direction of the seam 12 (for example, the Y direction in Figures 12 and 13), 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.

[0098] As shown in Figures 12 and 13, the welding joint 2 includes a first bending portion 21 and a second bending portion 22, which are alternately arranged along the joint 12 between the magnets 11. The first bending portion 21 bends toward one side of the joint 12, and the second bending portion 22 bends toward the other side of the joint 12.

[0099] In some embodiments, as shown in Figures 11 and 12 , along the seam 12 , the end of the welded joint 2 is spaced from the edge of the magnet 11 . For example, as shown in Figure 12 , 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.

[0100] In some embodiments, as shown in Figures 14 and 15, Figure 14 is a schematic structural diagram of the magnetic attraction assembly in the seventh embodiment of the present application, and Figure 15 is a schematic structural diagram of the magnetic attraction assembly in the eighth embodiment of the present application. There are multiple welding joints 2, and multiple welding joints 2 are arranged at intervals along the joints 12 between the magnets 11. With this arrangement, the space occupied by the welding joints 2 is reduced in the extension direction of the joints 12, so that the deformation of the magnet 11 during welding is small, and the influence of the high temperature of the welding joints 2 during formation on the magnetism of the magnet 11 is also reduced.

[0101] As shown in Figures 14 and 15 , two, but not limited to, welded joints 2 can be provided at the same joint 12. Three or more welded joints 2 can also be provided. As shown in Figures 14 and 15 , the outline of the welded joint 2 can be circular, but not limited to this, and can also be elliptical, square, rectangular, or other shapes.

[0102] In some embodiments, as shown in FIG15 , 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., a spiral weld). 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.

[0103] As shown in FIG15 , 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.

[0104] In some embodiments, as shown in FIG16 , which is a schematic structural diagram of a magnetic attraction assembly in a ninth embodiment of the present application, the welded joint 2 penetrates the magnet unit 1 along the depth direction of the joint 12 (e.g., the X direction in the figure). That is, when welding the magnet 11, the welding path meanders 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.

[0105] 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 .

[0106] In some embodiments, as shown in FIG17 , which is a schematic structural diagram of a magnetic attraction assembly in the tenth embodiment of the present application, the magnetic attraction assembly further includes a magnet holder 3 , which is provided with a receiving slot 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 slot 31 .

[0107] 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.

[0108] In some embodiments, as shown in FIG17 , an adhesive layer 33 is provided between the magnet unit 1 and the bottom wall of the receiving groove 31 , so that the magnet unit 1 can be fixed in the receiving groove 31 more firmly.

[0109] The bonding layer 33 may be a glue layer, such as a thermosetting glue layer.

[0110] In addition to being a Halbach array, the magnet unit 1 in the embodiment of the present application can also be an array of other repelling magnets 11. In some embodiments, as shown in Figure 18, Figure 18 is a structural schematic diagram of the magnetic attraction component in the eleventh embodiment of the present application. In the magnet unit 1, each magnet 11 includes two magnet end faces 117 arranged opposite to each other, 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.

[0111] Of course, the magnet 11 is not limited to the structure shown in FIG. 18 , and the magnet 11 may also adopt other shapes according to actual conditions.

[0112] In some embodiments, as shown in FIG18 , a welded joint 2 is provided at the joint 12 between the first magnet side surfaces 113 of two adjacent magnets 11. This arrangement can reduce the impact of high temperatures and the like on the working surface (the surface with the magnetic poles, i.e., the magnet end surface 117) of the magnet unit 1 during welding, thereby reducing the impact of welding on the magnetic properties of the magnet unit 1.

[0113] In some embodiments, as shown in FIG19 , FIG19 is a schematic structural diagram of a 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, and the connection between the two adjacent magnet units 1 can be made more firmly, thereby improving the connection reliability between the magnet units 1.

[0114] As shown in FIG19 , the number of the magnet units 1 is two, but it is certainly not limited thereto. The number of the magnet units 1 may also be three or more.

[0115] FIG20 is a schematic diagram of the assembly process of a magnetic attraction assembly in some embodiments of the present application. The assembly method of the magnetic attraction assembly includes:

[0116] S1. As shown in (1) to (4) in Figure 20, 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 multiple magnets 11, and the multiple magnets 11 of the magnet unit 1 are placed on the carrying surface 60 of the carrier 6.

[0117] 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.

[0118] In addition, the two repelling magnets 11 can be welded together after the two repelling magnets 11 are connected, which avoids the problem of the middle magnet 021 being unable to be assembled due to glue overflow in the assembly method shown in Figure 6, thereby improving the assembly consistency of the magnet unit 1.

[0119] In some embodiments, as shown in Figure 20, 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.

[0120] Welding two adjacent and repelling magnets 11 in the magnet unit 1 of the magnetic attraction assembly, including:

[0121] S11. As shown in (1) to (3) in FIG. 20 , 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 .

[0122] The welding surface may be the first magnet side surface 113 in addition to the second end surface 112. As shown in (2) and (3) in FIG20 , after the plurality of magnets 11 are disposed on the bearing surface 60 of the bearing body 6, the plurality of magnets 11 can be pressed against the side by the push rod 5, so that the welding surfaces of two adjacent magnets 11 are connected, facilitating subsequent welding.

[0123] 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.

[0124] In some embodiments, after step S11, the method further includes:

[0125] S2. As shown in (5) of FIG. 20 , the magnet unit 1 is placed in the receiving groove 31 of the magnet holder 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 may be an adhesive layer, such as a thermosetting adhesive layer.

[0126] By placing the magnet unit 1 in the receiving groove 31 of the magnet holder 3, the receiving groove 31 can serve as a position limiter for the magnet unit 1, allowing the magnets 11 of the magnet unit 1 to be more tightly coupled, thereby preventing separation of the magnets 11. Furthermore, by welding the repelling magnets 11 in the magnet unit 1 and then placing them in the receiving groove 31, the problem of the first adhesive layer 031 and the second adhesive layer 032, made of different materials, coming into contact and reacting, resulting in the first adhesive layer 031 not curing and causing the magnet unit 1 to detach, can be avoided in the assembly method shown in FIG. 5 .

[0127] It should be noted that the material of the second glue layer 032 in Figure 5 is usually AB glue (AB glue; two-liquid mixed hardening glue), anaerobic glue, etc., and the material of the first glue layer 031 is thermosetting glue, which is a different type. The second glue layer 032 and the first glue layer 031 are made of different materials. If the second glue layer 032 comes into contact with the first glue layer 031 before it is fully cured, glue poisoning will occur, resulting in the first glue layer 031 not being cured, which can easily cause the magnet unit 1 to detach.

[0128] In some embodiments, as shown in Figure 20, 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.

[0129] The above step S2 includes:

[0130] S21 , as shown in ( 5 ) in FIG. 20 , separate the movable carrier 62 from the carrier body 61 .

[0131] S22. As shown in (5) in FIG20 , 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 .

[0132] As shown in FIG20 , if the welding surface is the second end surface 112, the movable carrier 62 needs to be rotated 180 degrees to flip the magnet unit 1 so that the first end surface 111 of the magnet 11 faces 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 faces away from the bottom wall of the receiving groove 31.

[0133] 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 .

[0134] 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.

[0135] In some embodiments, as shown in FIG21 , FIG21 is a schematic structural diagram of a movable carrier 62 in some embodiments of the present application. The movable carrier 62 includes a carrier body 621 and magnetic adsorption members 622 movably disposed on opposite sides of the carrier body 621. In the magnet unit 1, there are three magnets 11, the central magnet 11 being located on the carrier body 621, and the magnets 11 on both sides being partially located on the carrier body 621 and the other partially located on the corresponding magnetic adsorption members 622. Each magnetic adsorption member 622 is attracted to the corresponding magnet 11.

[0136] S23, separating the movable carrier 62 from the magnet unit 1, including:

[0137] S231 , as shown in ( 5 ) of FIG. 20 and FIG. 21 , adjust the position of each magnetic adsorption member 622 relative to the carrier body 621 so that each magnetic adsorption member 622 is separated from the corresponding magnet 11 .

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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:

[0142] As shown in (2) and (3) in FIG20 , a plurality of magnets 11 are covered with a protective cover plate 7 ; wherein, a avoidance hole 71 is provided on the cover plate 7 , and the avoidance hole 71 is opposite to the welded portion on the magnet 11 .

[0143] 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.

[0144] 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.

[0145] As shown in Figures 22 and 23, Figure 22 is a schematic structural diagram of a camera 100 in some embodiments of the present application, and Figure 23 is an AA cross-sectional view of the camera 100 in Figure 22. The camera 100 includes an optical lens 200, a photosensitive element 300, and a linear motor 400.

[0146] 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 .

[0147] 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 .

[0148] The linear motor 400 may be a voice coil motor or other types of linear motors, which are not specifically limited here.

[0149] When the linear motor 400 is working, the driving coil 430 is energized, and the magnetic field of the magnetic component 440 interacts with the driving coil 430 to move the mover 420 along the axial direction of the optical lens 200 , thereby driving the optical lens 200 to move along the axial direction to achieve focusing of the camera 100 .

[0150] As shown in FIG22 , the photosensitive element 300 is disposed on the circuit board 510, with the photosensitive surface of the photosensitive element 300 facing the light-emitting end of the optical lens 200 (e.g., the lower end of the optical lens 200 in FIG22 ) 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), and is not specifically limited herein.

[0151] In some embodiments, as shown in Figure 22, 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.

[0152] 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.

[0153] 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 .

[0154] In some embodiments, as shown in Figures 22 and 23, magnetic assemblies 440 are respectively provided on the mover sidewalls 422 on opposite sides of the mover 420, 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 drive 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.

[0155] In some embodiments, as shown in FIG22 , 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 adjacent to 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.

[0156] In some embodiments, as shown in FIG22 , there are two guide posts 4121, each located on opposite sides of the lens mounting hole 4211. There are two guide holes 423, each guide post 4121 slidably engaged with a corresponding guide hole 423. This arrangement allows the mover 420 to maintain balance, thereby ensuring smoother movement.

[0157] 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.

[0158] In some embodiments, as shown in FIG22 , the stator sidewall 413 and the first stator endwall 411 are integrally formed, and the second stator endwall 412 is detachably connected to the stator sidewall 413. This allows the second stator endwall 412 to be detached from the stator sidewall 413 if at least one of the mover 420, the drive coil 430, and the magnetic assembly 440 within the housing cavity 414 is damaged, thereby facilitating repair and replacement of the mover 420, the drive coil 430, and the magnetic assembly 440 within the housing cavity 414.

[0159] 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.

[0160] In some embodiments, as shown in FIG22 , the camera 100 further includes a filter 600 disposed between the optical lens 200 and the photosensitive element 300. The filter 600 is configured to filter out unwanted wavelengths of light, thereby preventing the photosensitive element 300 from generating false colors or ripples, thereby improving its effective resolution and color reproduction. For example, as shown in FIG22 , the filter 600 is an infrared filter 600.

[0161] In some embodiments, as shown in FIG22 , 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 may also be mounted on the stator 410 or the optical lens 200.

[0162] 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.

[0163] 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.

[0164] As shown in Figures 24 and 25, Figure 24 is a schematic diagram of the back of an electronic device in some embodiments of the present application, and Figure 25 is a BB cross-sectional view of the electronic device shown in Figure 24. The electronic device is a mobile phone and includes a housing 700 and a camera 100 shown in any of the above embodiments, with the camera 100 being disposed on the housing 700.

[0165] In some embodiments, as shown in FIG25 , the housing 700 includes a middle frame 710 (also referred to as a front shell or front frame) and a back cover 720 (also referred to as a battery cover). The display screen 800 and the back cover 720 are mounted on opposite sides of the middle frame 710 . The back cover 720 and the middle frame 710 define 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-incoming end of the optical lens 200 of the camera 100 is positioned opposite to a camera window 750 provided on the back cover 720 , ensuring that the optical lens 200 can receive light emitted by the scene being photographed outside the housing 700 .

[0166] The camera window 750 can be directly provided on the back cover 720; as shown in FIG25 , the camera window 750 can also be provided on the camera decorative member 760. Specifically, the camera decorative member 760 is provided on the back cover 720 and has an opening on one side. A protective cover is provided at the opening. The light-transmitting area of ​​the protective cover is the camera window 750. As shown in FIG25 , the camera decorative member 760 can be an integral structure with the back cover 720, but the present invention is not limited thereto and the camera decorative member 760 can also be designed as a separate body from the back cover 720.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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), and among the plurality of magnets (11), two adjacent and repelling magnets (11) are welded.

2. The magnetic attraction assembly according to claim 1, characterized in that: A welding joint (2) is provided at the joint of two adjacent and repelling magnets (11), and the welding joint (2) connects the two adjacent and repelling magnets (11) together.

3. The magnetic attraction assembly according to claim 2, characterized in that: The magnet unit (1) is a Halbach array, each of the magnets (11) comprises a first end face (111), 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 a surface of the magnet (11) located on the strong magnetic side of the magnet unit (1), and the second end face (112) is a surface of the magnet (11) located on the weak magnetic side of the magnet unit (1); Along a first direction (X), the first magnet side surfaces (113) are respectively located at two 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); In two adjacent magnets (11), the joint between the first magnet side faces (113) of the magnets (11) has the welding joint (2), and / or the joint between the second end faces (112) of the magnets (11) has the welding joint (2).

4. The magnetic attraction assembly according to claim 3, characterized in that: The magnet unit (1) comprises two magnets (11), the two magnets (11) are respectively a first magnet (11m) and a second magnet (11n), the first magnet (11m) comprises 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 the polarity of the second magnet (11n), and the second sub-magnet portion (116) is perpendicular to the polarity of the first sub-magnet portion (115).

5. The magnetic attraction assembly according to claim 2, characterized in that: In the magnet unit (1), each of the magnets (11) comprises two magnet (11) end faces arranged opposite to each other, and a first magnet side face (113) connected between the two magnet (11) end faces, and the polarity of each of the magnets (11) is the same and points from one magnet (11) end face to another magnet (11) end face; Along a first direction (X), the first magnet side surfaces (113) are respectively located at two 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); In two adjacent magnets (11), the joint between the first magnet side surfaces (113) of the magnets (11) is provided with the welding joint (2).

6. The magnetic attraction assembly according to claim 5, characterized in that: The number of the magnet units (1) is multiple, and the multiple magnet units (1) are arranged along the arrangement direction (Y), the polarities of the magnets (11) in two adjacent magnet units (1) are opposite, and the joint between the first magnet side surfaces (113) of two adjacent magnet units (1) has the welding joint (2).

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

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

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

10. The magnetic attraction assembly according to any one of claims 2 to 6, characterized in that: The number of the welding joints (2) is multiple, and the multiple welding joints (2) are arranged at intervals along the seams (12) between the magnets (11).

11. The magnetic attraction assembly according to claim 10, characterized in that: The welded joint (2) has a spiral pattern (23), and the pattern (23) is formed by the welded joint (2). The central area of ​​the welded joint (2) extends to the edge area of ​​the welded joint (2).

12. The magnetic attraction assembly according to any one of claims 1 to 11, 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 arranged in the receiving groove (31).

13. A linear motor, characterized in that: It comprises a stator (410), a mover (420), a driving coil (430) and a magnetic attraction component (440) according to any one of claims 1 to 12, wherein the driving 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).

14. A camera, characterized in that: The invention comprises an optical lens (200), a photosensitive element (300), and a linear motor (400) as claimed in claim 13, 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.

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

16. A method for assembling a magnetic attraction component, characterized in that: include: Welding two adjacent and repelling magnets (11) in a magnet unit (1) of a magnetic attraction assembly; Wherein, 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).

17. The method for assembling a magnetic attraction assembly according to claim 16, characterized in that: The magnet unit (1) is a Halbach array, each of the magnets (11) comprises a first end face (111), 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 a first direction (X), the first magnet side face (113) is respectively located at two 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 together comprises: 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 side surface (113) of the first magnet.

18. The method for assembling a magnetic attraction assembly according to claim 17, characterized in that: 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 arrange 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).

19. The method for assembling a magnetic attraction assembly according to claim 18, characterized in that: The movable carrier (62) comprises a carrier body (621) and magnetic adsorption components (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), a part of the magnets (11) located on the two sides is located on the carrier body (621), and the other part is located on the corresponding magnetic adsorption components (622); each magnetic adsorption component (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).

20. The method for assembling a magnetic attraction assembly according to any one of claims 16 to 19, characterized in that: Before welding two adjacent and repelling magnets (11) in a magnet unit (1) of a magnetic attraction assembly, the method further comprises: Covering the plurality of magnets (11) with a protective cover plate (7); Wherein, the cover plate is provided with an avoidance hole (71), and the avoidance hole (71) is opposite to a welded portion on the magnet (11).

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