Magnetic sheet

Abstract

The utility model discloses a magnetic sheet. The magnetic sheet comprises a main sheet shell, a cover body and a magnetic part, the main piece shell is provided with a bottom plate, a peripheral side plate and a first welding matching rib, the cover body is provided with a top plate, a second welding matching rib and a welding pressing rib, the second welding matching rib and the welding pressing rib are arranged on the two sides of the top plate in the thickness direction respectively, the cover body is installed on the main piece shell, and the second welding matching rib on the cover body makes contact with the first welding matching rib on the main piece shell. And the peripheral side plate is in contact with the surface of the top plate and is welded and fixed through ultrasonic equipment. When the magnetic sheet is assembled, ultrasonic welding equipment is pressed on the welding pressing ribs, the second welding matching ribs on the cover body and the first welding matching ribs on the main sheet shell can make contact with each other and are tightly attached, two-position welding is formed through welding of the peripheral side plates and the top plate, welding is firm, unsoldering is not prone to occurring, the structural stability is good, and durability is high; and additional screw parts are not needed, complex procedures such as punching and screw turning are omitted, the cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a toy technical field, concretely relates to a magnetic sheet. BACKGROUND

[0002] The magnetic sheet is usually composed of a main sheet body and a cover body, and the main sheet body and the cover body are usually connected by plug-in connection, clamping connection or screwing. The plug-in connection has poor structural stability and is easy to disconnect. The clamping connection has insufficient connection stability and is prone to loosening or even damage during long-term use, which directly affects the service life of the product. Although the screwing can improve the connection strength to some extent, it requires additional screw parts and increases the punching and screwing processes during assembly, which increases the production cost and the complexity of the production process and reduces the overall production efficiency.

[0003] In the prior art, ultrasonic welding technology is also used to connect the main sheet body and the cover body. However, this technology only welds around the edges of the main sheet body and the cover body, which cannot ensure uniform stress distribution at the welding site and is prone to local weak welding, which may cause the product to be disconnected during use, affecting the stability and reliability of the welding and failing to fully utilize the advantages of ultrasonic welding technology, resulting in poor structural strength and durability of the magnetic sheet.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0005] To solve one of the above technical problems, the utility model provides a magnetic sheet.

[0006] The application provides the following technical scheme:

[0007] A magnetic sheet comprises:

[0008] A main sheet shell has a bottom plate, a peripheral side plate and a first welding matching rib. The peripheral side plate is arranged around the edge of the bottom plate, and the first welding matching rib is arranged on the bottom plate and located on the inner side of the peripheral side plate.

[0009] A cover body has a top plate, a second welding matching rib and a welding pressing rib. The second welding matching rib and the welding pressing rib are arranged on both sides of the top plate along the thickness direction. The welding pressing rib extends along the second welding matching rib. The cover body is arranged on the main sheet shell. The second welding matching rib on the cover body and the first welding matching rib on the main sheet shell are in contact and are welded and fixed by an ultrasonic device. The surfaces of the peripheral side plate and the top plate are in contact and are welded and fixed by an ultrasonic device. The welding pressing rib is exposed on the outer surface of the magnetic sheet.

[0010] A magnetic piece is arranged between the main shell and the cover.

[0011] Optionally, the second welding matching rib has a main rib plate and a contact strip.

[0012] The main rib plate is connected perpendicularly to the top plate.

[0013] The contact strip is arranged on the side of the main rib plate away from the top plate.

[0014] The contact strip extends along the main rib plate, and the thickness of the contact strip is less than that of the main rib plate.

[0015] The contact strip and the top end surface of the first welding matching rib are in contact, and the contact strip and the first welding matching rib are welded and fixed by an ultrasonic welding device.

[0016] Optionally, the main rib plate has a bottom end surface at the end away from the top plate.

[0017] The contact strip is arranged on the top end surface.

[0018] The contact strip and the two side edges of the bottom end surface each have a gap.

[0019] Optionally, the thickness of the contact strip gradually decreases in the direction from the second welding matching rib to the first welding matching rib.

[0020] Optionally, the width of the welding pressing rib is not greater than the width of the main rib plate of the second welding matching rib.

[0021] The width of the welding pressing rib is 0.4mm-0.6mm.

[0022] The height of the welding pressing rib is 0.12mm-0.18mm.

[0023] Optionally, the welding pressing rib is a closed ring, and the distance between the welding pressing rib and the edge of the top plate is 5mm-6mm.

[0024] Optionally, the top plate has a fitting surface inside the welding pressing rib.

[0025] A sticker can be attached to the fitting surface.

[0026] Optionally, the first welding matching rib and the peripheral side plate form a magnet cavity.

[0027] A magnetic piece is arranged between the main shell and the cover.

[0028] Optionally, the outer surface of the cover and the bottom plate is provided with a circular recess.

[0029] Optionally, the cover inner surface is provided with an insertion shaft at a position corresponding to the recess, and the inner wall of the bottom plate is provided with an insertion sleeve at a position corresponding to the recess.

[0030] The insertion shaft is inserted into the insertion sleeve.

[0031] By adopting the technical scheme, the application has the following beneficial effects:

[0032] In the assembling of the magnetic sheet, the ultrasonic welding equipment is pressed on the welding bead, so that the second welding matching rib on the cover and the first welding matching rib on the main sheet shell are in contact and closely attached, and the welding of the circumferential side plate and the top plate forms two welding positions, so that the welding is firm and not easy to be detached, the structure is stable and durable, no additional screw parts are needed, and the punching and screwing processes are saved, thereby reducing the cost and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 The first structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0035] Figure 2 The first structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0036] Figure 3 The structure of the cover of the first structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0037] Figure 4 The structure of the cover of the second structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram. Figure 3 The enlarged view of A in the above figure.

[0038] Figure 5 The second structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0039] Figure 6 The second structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0040] Figure 7 The structure of the cover of the second structure of the magnetic sheet provided by the embodiment of the present application is shown in the schematic diagram.

[0041] Figure 8The third structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0042] Figure 9 The third structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0043] Figure 10 The third structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0044] Figure 11 The fourth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0045] Figure 12 The fourth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0046] Figure 13 The fourth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0047] Figure 14 The fifth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0048] Figure 15 The fifth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model;

[0049] Figure 16 The fifth structure schematic view of the magnetic sheet is provided for the embodiment of the utility model.

[0050] In the drawing: main sheet shell 1, bottom plate 11, peripheral side plate 12, first welding cooperation rib 13, plug sleeve 14, cover 2, top plate 21, bonding surface 211, second welding cooperation rib 22, main rib plate 221, contact strip 222, welding pressure rib 23, plug shaft 24, magnetic piece 3, recess a. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, and the following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0052] In the description of the utility model, it needs to explain, the terms "upper", "lower", "inner", "outer" and so on indicate the position relation based on the position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model.

[0053] In the description of the utility model, it needs to explain, unless otherwise explicitly provided and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium.

[0054] As shown in Figures 1 to 16 The utility model provides a magnetic sheet, including: main sheet shell 1, cover 2 and magnetic piece 3, main sheet shell 1 has bottom plate 11, peripheral side plate 12 and first welding cooperation rib 13, peripheral side plate 12 is arranged in the edge of bottom plate 11 a week, first welding cooperation rib 13 is arranged on bottom plate 11, and it is located the inside of peripheral side plate 12, cover 2 has top plate 21, second welding cooperation rib 22 and welding pressure rib 23, second welding cooperation rib 22 and welding pressure rib 23 are divided and arranged on both sides of the thickness direction of top plate 21, welding pressure rib 23 extends along second welding cooperation rib 22, cover 2 is installed on main sheet shell 1, second welding cooperation rib 22 on cover 2 and first welding cooperation rib 13 on main sheet shell 1 are contacted, and are fixed by ultrasonic equipment welding, the surface of peripheral side plate 12 and top plate 21 are contacted, and are fixed by ultrasonic equipment welding, welding pressure rib 23 is exposed to the external surface of magnetic sheet, magnetic piece 3 is arranged between main sheet shell 1 and cover 2, second welding cooperation rib 22 and welding pressure rib 23 are opposite in the direction of thickness of main sheet body, the magnetic sheet can be transparent material, so that the internal structure is not complex in appearance, and the appearance is good in degree of beauty, the magnetic sheet of the utility model realizes the double position ultrasonic welding of main sheet body and cover 2 by setting first welding cooperation rib 13 on main sheet body, second welding cooperation rib 22 and welding pressure rib 23 on cover 2, replaces single edge welding and traditional connection mode, solves the problem of not firm welding and easy to remove welding, improves structural strength and durability, saves screw parts and complex process, reduces cost and improves production efficiency.

[0055] In one possible implementation, as Figure 3 , Figure 7 , Figure 10, Figure 13 and Figure 16 As shown, the second welding rib 22 has a main rib plate 221 and a contact strip 222. The main rib plate 221 is vertically connected to the top plate 21. The contact strip 222 is disposed on the side of the main rib plate 221 away from the top plate 21 and extends along the main rib plate 221. The thickness of the contact strip 222 is less than that of the main rib plate 221. The contact strip 222 contacts the top end face of the first welding rib 13, and the contact strip 222 and the first welding rib 13 are welded and fixed by ultrasonic welding equipment. The thinner contact strip 222 allows it to precisely fit against the top end face of the first welding rib 13, ensuring accurate positioning during ultrasonic welding and optimizing ultrasonic energy transmission, making the two welds stronger, further avoiding the risk of weld detachment, and improving the stability of the magnetic sheet structure.

[0056] like Figure 4 As shown, the main stiffener 221 has a bottom end face at the end opposite to the top plate 21, and the contact strip 222 is disposed on the top end face. Both sides of the contact strip 222 and the bottom end face have gaps. This allows for precise positioning of the contact strip 222 to ensure a good fit with the first welding rib 13. The gaps also provide space for material deformation or heat dissipation during welding, preventing damage at the weld due to stress concentration or overheating, and further improving weld strength and structural stability.

[0057] like Figure 4 As shown, the thickness of the contact strip 222 gradually decreases in the direction from the second welding rib 22 to the first welding rib 13. This creates a "gradual fit" between the contact strip 222 and the second welding rib 22, ensuring precise alignment during welding, optimizing the concentrated transmission of ultrasonic energy, resulting in a more complete and robust weld, while reducing welding stress and further lowering the risk of weld failure.

[0058] The width of the welding rib 23 is no greater than the main stiffener plate 221 of the second welding rib 22. The width of the welding rib 23 is 0.4mm to 0.6mm, and the height of the welding rib 23 is 0.12mm to 0.18mm. This ensures the stability of pressure application during ultrasonic welding, allowing the second welding rib 22 to fit tightly with the first welding rib 13, while also preventing the welding rib 23 from being too large, which could lead to material waste or affect the appearance of the magnetic sheet.

[0059] In a possible implementation, the welding ribs 23 are closed loops, and the distance between the welding ribs 23 and the edge of the top plate 21 is 5-6 mm. This can make the pressure of ultrasonic welding uniformly act on the entire welding surface, avoiding insufficient local pressure leading to poor welding. The distance between the welding ribs 23 and the edge of the top plate 21 is 5-6 mm. This does not affect the welding of the side plate 12 and the edge of the top plate 21, and can avoid the structural weakness caused by the welding ribs 23 being too close to the edge, further improving the overall welding stability and the structural strength of the magnetic sheet, and the closed loop welding ribs 23 have no gaps and are not easy to scratch the hands, making the magnetic sheet of the application have a better feel and a more beautiful appearance.

[0060] As shown in Figure 1 、 Figure 5 、 Figure 8 、 Figure 11 and Figure 14 , the top plate 21 has a fitting surface 211 inside the welding ribs 23, and the sticker can be attached to the fitting surface 211. The sticker can realize pattern decoration and other functions, improving the appearance diversity of the magnetic sheet.

[0061] As shown in Figure 2 、 Figure 6 、 Figure 9 、 Figure 12 and Figure 15 , the first welding matching rib 13 and the side plate form a magnet cavity, and the magnetic member 3 is contained in the magnet cavity. The first welding matching rib 13 includes a flat section parallel to the side plate and a vertical section connecting the two ends of the flat section, and the flat section, the two vertical sections and the side plate form the magnet cavity. The magnet cavity can provide a placement space for the magnetic member 3 during assembly, facilitating the installation of the magnetic member 3 before ultrasonic welding, simplifying the process, and positioning the magnetic member 3 to avoid displacement of the magnetic member 3 during welding or use, ensuring stable magnetic force and reliable use.

[0062] In a possible implementation, as shown in Figure 1 、 Figure 5 、 Figure 8 、 Figure 11 and Figure 14As shown, the outer surfaces of the cover 2 and the bottom plate 11 are provided with circular recesses a. The cover 2 and the bottom plate 11 are formed by glue injection process. In production, the shrinkage, recess and other defects caused by the cooling shrinkage of glue during glue injection forming can be avoided to ensure the overall flatness. The recesses a can accommodate these defects, and the production marks that may affect the appearance are converted into regular and recognizable circular structures, so that the magnetic sheet shell looks more delicate and textured, and the visual integrity of the product is improved, and the production practicability is also considered.

[0063] As shown in Figure 3 , Figure 7 , Figure 10 , Figure 13 and Figure 16 , the inner surface of the cover 2 is provided with an insertion shaft 24 at the position corresponding to the recess a, and the inner wall of the bottom plate 11 is provided with an insertion sleeve 14 at the position corresponding to the recess a, and the insertion shaft 24 is inserted into the insertion sleeve 14. The cover 2 and the bottom plate 11 are connected by plug-in connection and then combined by ultrasonic welding connection, so that the connection structure is stable and not easy to separate, and the internal structure is not complex and the appearance is good.

[0064] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A magnetic sheet, characterized by, The utility model relates to a magnetic sheet, comprising: a main sheet shell having a bottom plate, a peripheral side plate arranged around the edge of the bottom plate, and a first welding matching rib arranged on the bottom plate and located on the inner side of the peripheral side plate; a cover body having a top plate, a second welding matching rib and a welding pressing rib arranged on both sides of the top plate along the thickness direction, the welding pressing rib extending along the second welding matching rib, the cover body being mounted on the main sheet shell, the second welding matching rib on the cover body and the first welding matching rib on the main sheet shell being in contact and being fixed by ultrasonic welding, the surface of the peripheral side plate and the top plate being in contact and being fixed by ultrasonic welding, and the welding pressing rib being exposed on the outer surface of the magnetic sheet; a magnetic piece arranged between the main sheet shell and the cover body.

2. The magnetic sheet of claim 1, wherein, The second welding matching rib has a main rib plate and a contact strip; the main rib plate is connected perpendicularly to the top plate; the contact strip is arranged on the side of the main rib plate away from the top plate; the contact strip extends along the main rib plate, and the thickness of the contact strip is less than that of the main rib plate; the contact strip and the top end surface of the first welding matching rib are in contact, and the contact strip and the first welding matching rib are fixed by ultrasonic welding equipment.

3. The magnetic sheet of claim 2, wherein, the end of the main rib plate away from the top plate is provided with a bottom end surface; the contact strip is arranged on the top end surface; both sides of the contact strip and the bottom end surface are provided with gaps.

4. The magnetic sheet of claim 3, wherein, In the direction from the second welding matching rib to the first welding matching rib, the thickness of the contact strip gradually decreases.

5. The magnetic sheet of claim 4, wherein, The width of the welding pressing rib is not greater than that of the main rib plate of the second welding matching rib; the width of the welding pressing rib is 0.4mm-0.6mm; the height of the welding pressing rib is 0.12mm-0.18mm.

6. The magnetic sheet of claim 5, wherein, The welding pressing rib is a closed ring, and the distance between the welding pressing rib and the edge of the top plate is 5mm-6mm.

7. The magnetic sheet of claim 6, wherein, The top plate has a fitting surface located on the inner side of the welding pressing rib; a sticker can be attached to the fitting surface.

8. The magnetic sheet of claim 7, wherein, The first welding matching rib and the peripheral side plate form a magnet cavity; the magnetic piece is contained in the magnet cavity.

9. The magnetic sheet of claim 8, wherein, The outer surface of the cover body and the bottom plate is provided with a circular recess.

10. The magnetic sheet of claim 9, wherein, The inner surface of the cover body is provided with a plug shaft at the position corresponding to the recess, and the inner wall of the bottom plate is provided with a plug sleeve at the position corresponding to the recess; the plug shaft is inserted into the plug sleeve.

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