CN214232767U - Magnetic force sheet - Google Patents
Magnetic force sheet Download PDFInfo
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- CN214232767U CN214232767U CN202022420059.XU CN202022420059U CN214232767U CN 214232767 U CN214232767 U CN 214232767U CN 202022420059 U CN202022420059 U CN 202022420059U CN 214232767 U CN214232767 U CN 214232767U
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Abstract
The utility model discloses a magnetic force piece, include: the magnetic structure comprises a frame-shaped structure and at least one magnetic structure arranged on the frame-shaped structure, wherein the frame-shaped structure and the magnetic structure are integrally formed by injection molding, and the frame-shaped structure is an integral body; the magnetic structure comprises a cylindrical structure with openings at two ends and a magnetic body arranged in the cylindrical structure, and the magnetic body can freely rotate in at least one direction in the cylindrical structure; the frame structure comprises a plug part which extends into at least one end of the cylindrical structure and limits the position of the cylindrical structure, and the plug part does not limit the rotation of the magnetic body. The utility model discloses a frame type structure and magnetic structure are through integrative injection moulding, and the hot melt adhesive cladding, the bonding magnetic structure that frame type structure formed make to have firm relation of connection between frame type structure and the magnetic structure.
Description
Technical Field
The utility model relates to the technical field of toys or teaching aids, in particular to a magnetic sheet.
Background
Magnetic force piece is a toy liked by child deeply today, current magnetic force piece has the square usually, the rectangle, the triangle-shaped, it is circular, various shapes such as polygon, magnetic force piece structure mainly includes magnetic force piece main part and a plurality of magnetism holding body, the inside of a plurality of magnetism holding body has magnet, and a plurality of magnetism holding body centre gripping respectively in the outer fringe of magnetic force piece main part, make the outer fringe part of magnetic force piece main part have magnetism, can form the temporary connection or the fixing of formula of magnetism with the outer fringe of other magnetic force pieces. The magnetic clamping body part of the magnetic sheets is magnetically adsorbed, so that the magnetic sheets with different shapes, types and quantities can be placed to form various shapes, and the imagination of children is developed.
In the existing magnetic sheet, a magnetic clamping body is usually fixed on a magnetic sheet main body in a mechanical force clamping mode, a glue fixing mode and the like, or is pressed on the magnetic sheet main body through a machine, and the problem of damage and falling off exists after long-time use.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a magnetic sheet.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a magnetic force sheet comprises a frame structure and at least one magnetic structure arranged on the frame structure, wherein the frame structure and the magnetic structure are integrally formed by injection molding, and the frame structure is an integral body; wherein the content of the first and second substances,
the magnetic structure comprises a cylindrical structure with two open ends and a magnetic body arranged in the cylindrical structure, and the magnetic body can freely rotate in at least one direction in the cylindrical structure;
the frame-shaped structure comprises a plug part which extends into at least one end of the cylindrical structure and limits the position of the cylindrical structure, and the plug part does not limit the rotation of the magnetic body.
A magnetic sheet, comprising: the magnetic structure comprises a frame-shaped structure and at least one magnetic structure arranged on the frame-shaped structure, wherein the frame-shaped structure and the magnetic structure are integrally formed by injection molding, and the frame-shaped structure is a whole; wherein the content of the first and second substances,
the magnetic structure comprises a cylindrical structure with two open ends and a magnetic body arranged in the cylindrical structure, and the magnetic body can freely rotate in at least one direction in the cylindrical structure;
the plug part extends into at least one end of the cylindrical structure, and the plug part does not limit the rotation of the magnetic body;
the plug part is integrally fused with the frame-shaped structure into a whole after being integrally injection-molded.
In the above magnetic sheet, the frame structure has at least one closed or open cavity, and the cavity is used for accommodating the magnetic structure.
In the magnetic sheet, the cavity is provided with the positioning holes along two sides of the frame structure in the circumferential direction.
The magnetic sheet is characterized in that the positioning hole is formed by a positioning device which is arranged in a mold in integral injection molding and used for limiting the position of the magnetic structure or the magnetic structure of the plug part on the plug part in the mold.
In the above magnetic sheet, the frame-shaped structure has at least one closed or open cavity defined by two opposite side walls, the cavity is used for accommodating the magnetic structure, the plug portion is located on the side walls, and two ends of the cylindrical structure are respectively connected to the two side walls.
The above-mentioned magnetic force piece, wherein, frame type structure includes frame type structure body and cock portion, the cock portion includes: the sealing part is used for sealing the cylindrical structure and is connected with the plugging part in a round platform shape, and the sealing part is integrally connected with the frame-shaped structure body relative to the other end of the plugging part.
The magnetic sheet described above, wherein the plug portion includes: the cylindrical structure is filled in, the cylindrical filling part is used for sealing the cylindrical structure, the round platform-shaped sealing part connected with the filling part and the cylindrical connecting part connected with the sealing part are filled in, and the sealing part and the connecting part are integrally fused with the frame structure after being integrally injection molded.
The magnetic sheet described above, wherein the plug portion further includes: the annular reinforcing part is formed by radially and outwardly extending the connecting part, and the reinforcing part and the frame-shaped structure are also integrally fused after being integrally injection-molded.
The magnetic sheet described above, wherein the frame structure includes an annular outer frame portion, an annular inner frame portion provided in the outer frame portion, and a middle frame portion radially connecting the outer frame portion and the inner frame portion, and both an axial thickness of the outer frame portion and an axial thickness of the inner frame portion are greater than an axial thickness of the middle frame portion;
the inner side wall of the outer frame portion, the surface of the middle frame portion, and the outer side wall of the inner frame portion form a groove wall of the groove, wherein the inner side wall of the outer frame portion and the outer side wall of the inner frame portion form a groove bottom of the groove.
In the above magnetic sheet, the outer frame portion includes a narrower edge portion and a wider widened portion, the widened portion is provided with a cavity opening to the outside, and the cavity is used for accommodating the magnetic structure;
the two ends of the magnetic structure are connected with the side wall of the cavity, one side of the magnetic structure is connected with the bottom of the cavity, and the other side of the magnetic structure is flush with the outer side of the edge part.
The magnetic sheet described above, wherein the material of the frame-shaped structure at least partially covers the end of the magnetic structure and/or the outer surface of the magnetic structure.
The magnetic sheet described above, wherein the material of the frame-shaped structure at least partially coats the plug portion, the end portion of the magnetic structure, and/or the outer surface of the magnetic structure.
A method of manufacturing a magnetic sheet, for manufacturing the magnetic sheet described in any one of the above, the method comprising:
step S1: providing a mould, wherein the mould is provided with an annular cavity, and a plurality of positioning devices are arranged in the cavity along the circumferential direction of the cavity;
step S2: placing the magnetic body in the cylindrical structure, and plugging the plug parts into two ends of the cylindrical structure to ensure that the distance between the two plug parts is greater than the length of the magnetic body so as to ensure that the magnetic body can move or rotate in the cylindrical structure;
step S3: placing the cylindrical structure provided with the magnetic body and the plug part into the cavity, and enabling the two plug parts to respectively abut against two adjacent positioning devices to limit the position along the circumferential direction;
step S4: injecting a material into the cavity such that the material is at least partially in the cylindrical structure and/or at least partially in contact with the cylindrical structure, while the plug portion is at least partially melted and integrated with the material.
In the method of manufacturing a magnetic sheet, in step S3, the side surface of the cylindrical structure to which the magnetic body and the plug portion are attached is attached to the outer side wall of the cavity.
In the method for manufacturing a magnetic sheet, in step S4, the material injected into the cavity provides a force to the cylindrical structure toward the outer side wall of the cavity.
The utility model discloses owing to adopted above-mentioned technique, make it compare the positive effect that has with prior art and be:
(1) the utility model discloses a frame type structure and magnetic structure are through integrative injection moulding, and the hot melt adhesive cladding, the bonding magnetic structure that frame type structure formed make to have firm relation of connection between frame type structure and the magnetic structure.
(2) The utility model discloses a frame type structure is a whole, consequently can not damage owing to the inefficacy of concatenation, joint part, also can not make the magnetic structure deviate from owing to the part is cracked in the concatenation.
(3) The utility model discloses allow the magnetic substance freely to rotate in order to adjust the direction of magnetic pole, make things convenient for the magnetism between a plurality of magnetic force pieces to connect.
Drawings
Fig. 1 is a schematic view of the magnetic sheet of the present invention.
Fig. 2 is a schematic view of the magnetic sheet of the present invention.
Fig. 3 is a perspective schematic view of the magnetic sheet of the present invention.
Fig. 4 is a schematic view of the plug portion and the magnetic structure of the magnetic sheet of the present invention.
Fig. 5 is a schematic view of the plug portion of the magnetic sheet of the present invention.
Fig. 6 is a schematic view of another plug portion and magnetic structure of the magnetic sheet of the present invention.
Fig. 7 is a schematic view of another stopper portion of the magnetic sheet of the present invention.
In the drawings: 1. a frame-shaped structure; 11. a cavity; 12. positioning holes; 13. a frame-shaped structural body; 131. an outer frame portion; 3111. an edge portion; 1312. a widened portion; 132. an inner frame portion; 133. a middle frame portion; 2. a magnetic structure; 21. a tubular structure; 3. a plug portion; 31. a plug-in part; 32. a sealing part; 33. a connecting portion; 34. A reinforcement section.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 1 is a schematic view of a magnetic sheet of the present invention, fig. 2 is a schematic view of a magnetic sheet of the present invention, fig. 3 is a perspective schematic view of a magnetic sheet of the present invention, fig. 4 is a schematic view of a magnetic sheet stopper and a magnetic structure of the present invention, fig. 5 is a schematic view of a magnetic sheet stopper of the present invention, fig. 6 is a schematic view of another magnetic sheet stopper and a magnetic structure of the present invention, fig. 7 is a schematic view of another magnetic sheet stopper of the present invention, please refer to fig. 1 to 7, which show a magnetic sheet of a preferred embodiment, including a frame structure 1 and at least one magnetic structure 2 disposed on the frame structure 1, the frame structure 1 and the magnetic structure 2 being integrally injection molded, the frame structure 1 being a whole; the magnetic structure 2 comprises a cylindrical structure 21 with two open ends and a magnetic body (not shown in the figure) arranged inside the cylindrical structure, wherein the magnetic body can freely rotate in at least one direction inside the cylindrical structure 21; the frame structure 1 includes a plug portion 3 that extends into at least one end of the tubular structure 2 and defines the position of the tubular structure, and the plug portion 3 does not restrict the rotation of the magnetic body.
It is worth noting the relationship between the frame structure 1 and the plug portion 3, and the frame structure 1 and the plug portion 3 may be formed simultaneously in a preferred embodiment, for example, a position-limiting piece is disposed at a certain position inside the tubular structure 21, so that the magnetic body can be displaced between the two position-limiting pieces and can also rotate in the tubular structure 21, and then injection molding is performed to form the frame structure 1 and the plug portion simultaneously, wherein the plug portion 3 extending into the tubular structure 21 is formed at the outer portion of the position-limiting piece, and the plug portion 3 is not contacted with the magnetic body.
Of course, in another preferred embodiment, the plug portion 3 may be formed first, and then the frame-shaped structure 1 may be injection-molded, and in the process of forming the frame-shaped structure 1, the material of the frame-shaped structure 1 is made to flow to cover the plug portion 3, and the outer portion of the plug portion 3 (i.e., the portion other than the plug portion described below) is partially or completely melted by the frame-shaped structure 1, so that the frame-shaped structure 1 and the plug portion 3 are melted into a whole.
In the present embodiment, a whole specifically means that the frame-shaped structure 1 is a unitary workpiece and is not formed by detachably or non-detachably splicing a plurality of components, in other words, the frame-shaped structure 1 is a firm and inseparable whole after molding, and the magnetic structure 2 is bonded to the frame-shaped structure 1 by the bonding force formed by coating the molten material of the frame-shaped structure 1, that is, the material of the frame-shaped structure 1 forms a hot melt in a molten state, so that the frame-shaped structure 1 is bonded to the magnetic structure 2.
It is particularly necessary that the connection between the frame structure 1 and the magnetic structure 2 is only by means of the adhesive force of the hot-melt adhesive nature provided by the material of the frame structure 1 or the material of the plug 3 itself, and not by means of other snapping, snapping or the use of adhesives of a different nature than the material of the frame structure 1 and the adhesion thereof.
In one preferred embodiment, the magnetic body is a cylinder, and the magnetic body can be displaced within a certain range along the axial direction of the cylindrical structure 21, and can also be rotated around the axial direction of the cylindrical structure 21 to adjust the direction of the magnetic poles by itself. In this embodiment, the magnetic body can rotate only in one direction.
In another preferred embodiment, the magnetic body may be spherical, and the magnetic body may be displaceable within a certain range in the axial direction of the tubular structure 21, and may be rotated arbitrarily. In this embodiment, the magnetic body is capable of rotating in multiple directions.
Further, as a preferred embodiment, the frame-shaped structure 1 is provided with at least one closed or open cavity 11 for accommodating the magnetic structure 2.
Further, as a preferred embodiment, the cavity 11 is provided with positioning holes 12 along two sides of the frame structure 1 in the circumferential direction.
Further, as a preferred embodiment, the positioning hole 12 is formed by a positioning device (not shown) in the mold for defining the position of the magnetic structure 2 or the magnetic structure 2 of the plug-in portion 3 in the mold in one-piece injection molding.
Further, as a preferred embodiment, the frame-shaped structure 1 has at least one closed or open cavity 11 defined by two opposite side walls, the cavity 11 is used for accommodating the magnetic structure 2, the plug portion 3 is located on the side walls, and two ends of the cylindrical structure 21 are respectively connected to the two side walls.
Further, as a preferred embodiment, the frame structure 1 includes a frame structure body 13 and a plug portion 3, and the plug portion 3 includes: a cylindrical insertion portion 31 inserted into the tubular structure 21, and a circular truncated cone-shaped sealing portion 32 connected to the insertion portion 31 for sealing the tubular structure 21, wherein the other end of the sealing portion 32 opposite to the insertion portion 31 is integrally connected to the frame-shaped structure body 13.
Further, as a preferred embodiment, the plug portion 3 includes: the frame structure comprises a cylindrical plugging part 31 plugged into the cylindrical structure 21, a truncated cone-shaped sealing part 32 connected with the plugging part 31 and used for sealing the cylindrical structure 21, and a cylindrical connecting part 33 connected with the sealing part 32, wherein the sealing part 32 and the connecting part 33 are integrally fused with the frame structure 1 after being integrally injection-molded.
Further, as a preferred embodiment, the plug portion 3 further includes: an annular reinforcing portion 34 is formed by extending the connecting portion 33 radially outward, and the reinforcing portion 34 is also integrally fused with the frame-shaped structure 1 after the integral injection molding.
Regarding the connection relationship between the plug portion 3 and the cylindrical structure 21, in a preferred embodiment, the plug portion 3 may be in interference fit with the cylindrical structure 21, for example, the outer diameter of the plug portion 31 of the plug portion 3 is slightly larger than the inner diameter of the cylindrical structure 21, so that the static friction between the plug portion 31 of the plug portion 3 and the inner wall of the cylindrical structure 21 is caused to fix the position of the plug portion 3 relative to the cylindrical structure 21 as much as possible, and a space for axial displacement of the magnetic body inside the cylindrical structure 21 is left by the fit.
In another preferred embodiment, the plug 3 can be in clearance fit with the cylindrical structure 21, and the position of the plug 3 and the cylindrical structure 21 is limited by the sealing part 32 of the plug 3 abutting against the end of the cylindrical structure 21, so as to leave a space for axial displacement of the magnetic body inside the cylindrical structure 21. For example, the outer diameter of the larger bottom surface of the sealing portion 32 is larger than the outer diameter of the plugging portion 31, so that a stepped structure is formed between the sealing portion 32 and the plugging portion 31, and the end of the cylindrical structure 21 abuts against the stepped structure to prevent the plugging portion 31 from being excessively plugged.
On the other hand, by providing the reinforcing part 34, the plug part 3 has a larger surface area except for the plug part 31, which facilitates the mutual melting of the plastic molecules of the frame structure 1 and the plug part 3 during the integral injection molding, and the material of the frame structure 1 can better cover the plug body 3 during the integral injection molding.
Further, as a preferred embodiment, the frame structure 1 includes an annular outer frame portion 131, an annular inner frame portion 132 disposed inside the outer frame portion 131, and an intermediate frame portion 133 radially connecting the outer frame portion 131 and the inner frame portion 132, and both the axial thickness of the outer frame portion 131 and the axial thickness of the inner frame portion 132 are greater than the axial thickness of the intermediate frame portion 133.
Further, as a preferred embodiment, the inner side wall of the outer frame portion 131, the surface of the middle frame portion 133, and the outer side wall of the inner frame portion 132 form grooves, wherein the inner side wall of the outer frame portion 131 and the outer side wall of the inner frame portion 132 form groove walls of the grooves, and the surface of the middle frame portion 133 forms a groove bottom of the grooves.
Further, as a preferred embodiment, the groove is formed by a protrusion in a cavity in the mold, for example, the cavity has an annular cavity groove, the middle of the annular cavity groove has an annular cavity protrusion, and the annular cavity protrusion divides the annular cavity groove into an outer first cavity groove and an inner second cavity groove, wherein the outer first cavity groove is used for molding the outer frame portion 131, and the inner second cavity groove is used for molding the inner frame portion 132. The cavity protrusions have the effect of limiting the position of the magnetic structure 2 in the injection-molded structure, for example, for limiting the movement of the magnetic structure 2 in the radial direction.
Further, as a preferred embodiment, the outer frame portion 131 includes a narrower edge portion 1311 and a wider widened portion 1312, and the widened portion 1312 is provided with a cavity 11 opened to the outside, and the cavity 11 is used for accommodating the magnetic structure 2.
Further, as a preferred embodiment, two ends of the magnetic structure 2 are connected to the side wall of the cavity 11, one side of the magnetic structure 2 is connected to the bottom of the cavity 11, and the other side of the magnetic structure 2 is flush with the outer side of the edge portion 1311.
Further, as a preferred embodiment, the material of the frame structure 1 at least partially covers the ends of the magnetic structure 2 and/or the outer surface of the magnetic structure 2.
Further, as a preferred embodiment, the material of the frame-shaped structure 1 at least partially covers the plug portion 3, the end of the magnetic structure 2 and/or the outer surface of the magnetic structure 2.
Further, as a preferred embodiment, the plug portion 3 of the frame structure 1 may be made of PP, PC and/or ABS. The material of the frame structure 1 can melt the plug portion 3 partially or entirely after heating and melting. That is, the material of the frame structure 1 can be heated and melted at a temperature higher than the melting point of the plug portion 3.
The above description is only an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The utility model discloses still have following embodiment on above-mentioned basis:
the utility model discloses a further embodiment still provides a manufacturing approach of magnetic force piece for make foretell magnetic force piece, manufacturing approach includes:
step S1: providing a mould, wherein the mould is provided with an annular cavity, and a plurality of positioning devices are arranged in the cavity along the circumferential direction of the cavity;
step S2: placing the magnetic body in the tubular structure, and plugging the plug parts into two ends of the tubular structure to ensure that the distance between the two plug parts is greater than the length of the magnetic body so as to ensure that the magnetic body can move or rotate in the tubular structure;
step S3: placing the cylindrical structure with the magnetic body and the plug part into a cavity, and enabling the two plug parts to respectively abut against two adjacent positioning devices to limit the position along the circumferential direction;
step S4: injecting a material into the cavity such that the material is at least partially in the cylindrical structure and/or at least partially in contact with the cylindrical structure, while the plug portion is at least partially melted and integrated with the material.
In step S3, the side surface of the cylindrical structure to which the magnetic body and the plug are attached is attached to the outer side wall of the cavity.
In step S4, the material injected into the cavity provides a force to the tubular structure toward the outer sidewall of the cavity.
It should be noted that the radial direction refers to each direction on the plane of the paper, which is the direction from the center of the frame structure 1 to the outer edge of the frame structure 1 in fig. 1, the axial direction refers to the direction perpendicular to the paper, and the circumferential direction refers to the direction along the outer edge of the frame structure 1 or around the outer edge of the frame structure 1.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (13)
1. A magnetic force sheet is characterized by comprising a frame structure and at least one magnetic structure arranged on the frame structure, wherein the frame structure and the magnetic structure are integrally formed by injection molding, and the frame structure is an integral body; wherein the content of the first and second substances,
the magnetic structure comprises a cylindrical structure with two open ends and a magnetic body arranged in the cylindrical structure, and the magnetic body can freely rotate in at least one direction in the cylindrical structure;
the frame-shaped structure comprises a plug part which extends into at least one end of the cylindrical structure and limits the position of the cylindrical structure, and the plug part does not limit the rotation of the magnetic body.
2. A magnetic sheet, comprising: the magnetic structure comprises a frame-shaped structure and at least one magnetic structure arranged on the frame-shaped structure, wherein the frame-shaped structure and the magnetic structure are integrally formed by injection molding, and the frame-shaped structure is a whole; wherein the content of the first and second substances,
the magnetic structure comprises a cylindrical structure with two open ends and a magnetic body arranged in the cylindrical structure, and the magnetic body can freely rotate in at least one direction in the cylindrical structure;
the plug part extends into at least one end of the cylindrical structure, and the plug part does not limit the rotation of the magnetic body;
the plug part is integrally fused with the frame-shaped structure into a whole after being integrally injection-molded.
3. Magnetic sheet according to claim 1 or 2, characterized in that the frame-shaped structure is provided with at least one closed or open cavity for receiving the magnetic structure.
4. The magnetic sheet according to claim 3, wherein the cavity has positioning holes formed at both sides in the circumferential direction of the frame-shaped structure.
5. The magnetic force plate of claim 4, wherein the positioning hole is formed by a positioning device in a mold in one-piece injection molding, the positioning device being used for defining the position of the magnetic structure or the magnetic structure of the plug portion on the plug portion in the mold.
6. The magnetic sheet according to claim 1 or 2, wherein the frame structure has at least one closed or open cavity defined by two opposite side walls, the cavity is used for accommodating the magnetic structure, the plug is located on the side walls, and two ends of the cylindrical structure are respectively connected with the two side walls.
7. The magnetic sheet of claim 1, wherein the frame-type structure comprises a frame-type structure body and a plug portion, the plug portion comprising: the sealing part is used for sealing the cylindrical structure and is connected with the plugging part in a round platform shape, and the sealing part is integrally connected with the frame-shaped structure body relative to the other end of the plugging part.
8. The magnetic sheet of claim 2, wherein the plug portion comprises: the cylindrical structure is filled in, the cylindrical filling part is used for sealing the cylindrical structure, the round platform-shaped sealing part connected with the filling part and the cylindrical connecting part connected with the sealing part are filled in, and the sealing part and the connecting part are integrally fused with the frame structure after being integrally injection molded.
9. The magnetic sheet of claim 8, wherein the plug portion further comprises: the annular reinforcing part is formed by radially and outwardly extending the connecting part, and the reinforcing part and the frame-shaped structure are also integrally fused after being integrally injection-molded.
10. The magnetic sheet according to claim 1 or 2, wherein the frame structure includes an outer frame portion having a ring shape, an inner frame portion having a ring shape provided in the outer frame portion, and an intermediate frame portion radially connecting the outer frame portion and the inner frame portion, and both an axial thickness of the outer frame portion and an axial thickness of the inner frame portion are larger than an axial thickness of the intermediate frame portion;
the inner side wall of the outer frame portion, the surface of the middle frame portion, and the outer side wall of the inner frame portion form a groove wall of the groove, wherein the inner side wall of the outer frame portion and the outer side wall of the inner frame portion form a groove bottom of the groove.
11. The magnetic sheet according to claim 10, wherein the outer frame portion comprises a narrower edge portion and a wider widened portion, the widened portion having a cavity opening to the outside for receiving the magnetic structure;
the two ends of the magnetic structure are connected with the side wall of the cavity, one side of the magnetic structure is connected with the bottom of the cavity, and the other side of the magnetic structure is flush with the outer side of the edge part.
12. Magnetic sheet according to claim 1 or 2, wherein the material of the frame-shaped structure at least partially coats the ends of the magnetic structure and/or the outer surface of the magnetic structure.
13. Magnetic sheet according to claim 2, characterized in that the material of the frame-shaped structure at least partially coats the plug portion, the end of the magnetic structure and/or the outer surface of the magnetic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022420059.XU CN214232767U (en) | 2020-10-27 | 2020-10-27 | Magnetic force sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022420059.XU CN214232767U (en) | 2020-10-27 | 2020-10-27 | Magnetic force sheet |
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| CN214232767U true CN214232767U (en) | 2021-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354196A (en) * | 2020-10-27 | 2021-02-12 | 塞伦斯玩具（上海）有限公司 | Magnetic sheet and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354196A (en) * | 2020-10-27 | 2021-02-12 | 塞伦斯玩具（上海）有限公司 | Magnetic sheet and manufacturing method thereof |
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