A manufacturing method of an RFID reflective license plate

Abstract

The application discloses a manufacturing method of an RFID reflective license plate, which comprises the following steps: S001: preparing a bottom plate, wherein the bottom plate is provided with a reflective film piece groove, a chip groove and a flow guide groove; S002: placing an RFID chip module in the chip groove; S003: punching and forming the reflective film piece according to the requirement; S004: placing the reflective film piece in the reflective film piece groove and positioning; S005: printing license plate number content on the upper surface of the reflective film piece, or printing the license plate number content on the reflective film piece in advance in step S003; S006: dropping a certain amount of glue liquid preparation on the upper surface of the reflective film piece, and flowing outward to the gap between the outer edge of the reflective film piece and the groove wall of the reflective film piece groove, and then flowing to the flow guide groove, so that the glue liquid covers the RFID chip module and the reflective film piece; S007: curing the glue liquid to form a glue body which completely wraps the reflective film piece, so as to fix the reflective film piece in the reflective film piece groove, fix the RFID chip module in the chip groove, and integrally fix the glue body with the bottom plate, thereby manufacturing a solid RFID reflective license plate.

Description

Technical fields:

[0001] This invention relates to the field of license plate product technology, and specifically to a method for manufacturing an RFID reflective license plate. Background technology:

[0002] With the increasing number of two-wheeled electric vehicles, motorcycles, and other modes of transportation in cities, traffic violations are also on the rise. At intersections controlled by traffic lights, these vehicles frequently engage in illegal driving behaviors, such as running red lights and driving in motor vehicle lanes, leading to frequent traffic accidents in densely populated areas. Therefore, to regulate the driving behavior of non-motorized vehicle drivers, electronic license plates have been introduced into the market. These electronic license plates, combined with RFID (Radio Frequency Identification) technology, enable intelligent traffic management.

[0003] Chinese invention patent ZL202320602216.X discloses an electric bicycle license plate, comprising: a license plate body, an RFID chip, a reflective film, a transparent cover, and a chip cover. The license plate body is made of a rigid non-metallic material, with a chip slot in the center to house the RFID chip. The chip cover is then assembled and fixed to the license plate body. The reflective film is a flexible material with adhesive on the back. The license plate number and related information are first printed onto the reflective film using a printer, and then the reflective film is affixed to the surface of the license plate body. The reflective film material helps prevent glare during nighttime photography. The reflective film can also be without an adhesive layer on the back. During production, the reflective film and the license plate body are fixed together by the transparent cover. The transparent cover covers the reflective film, and the transparent cover and the license plate body are seamlessly joined using a welding process. Alternatively, the transparent cover can be bonded to the license plate body using ultrasonic waves or adhesive bonding, making it impossible to remove by external force.

[0004] The aforementioned electric bicycle license plate has the following problems: First, the license plate has a large number of parts, and it uses a chip cover placed on the chip slot before assembling and fixing the chip cover and the license plate body. In addition, a transparent cover needs to be set on the license plate body, which covers the reflective film. The transparent cover is bonded to the license plate body by welding or bonding processes. This involves many processes and operations, and the overall product structure is complex. Finally, the reflective film is attached to the surface of the license plate body with adhesive on the back, but its firmness is not good, affecting product quality. Moreover, the entire electric bicycle license plate cannot be completely solid, and hollow parts will inevitably be formed between its parts, resulting in insufficient impact resistance. In addition, because the chip cover is placed on the chip slot, the RFID chip can be completely removed when forcibly removed, and its safety performance cannot be guaranteed.

[0005] In view of the above, the inventors propose the following technical solution. Summary of the Invention:

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for manufacturing RFID reflective license plates.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The manufacturing method of the RFID reflective license plate includes the following steps: S001: Preparing a base plate, wherein the base plate has a reflective film groove, a chip groove, and a guide groove located at the bottom of the reflective film groove and connected to the chip groove; S002: Placing the RFID chip module in the chip groove of the base plate; S003: Punching and forming reflective films of the required size on the reflective film material according to the required proportions; S004: Placing the reflective film in the reflective film groove and positioning it, and ensuring that the reflective film is flat, wherein a gap is formed between the outer edge of the reflective film and the groove wall of the reflective film groove; S005: Printing the license plate number on the upper surface of the reflective film. The code content, or in step S003, the license plate number content is pre-printed on the reflective film; S006: The amount of adhesive liquid is dripped onto the upper surface of the reflective film, and flows outward to the gap between the outer edge of the reflective film and the wall of the reflective film groove, and then flows into the guide groove, so that the adhesive liquid overflows into the chip groove to cover the RFID chip module. At the same time, the adhesive liquid covers the lower surface and the surrounding area of ​​the reflective film; S007: The adhesive liquid is allowed to stand, level, and solidify to form a colloid. The colloid completely wraps the reflective film and encapsulates and fixes the reflective film in the reflective film groove of the base plate. At the same time, the RFID chip module is encapsulated and fixed in the chip groove of the base plate. The colloid also fuses with the base plate and becomes a solid whole, forming a solid RFID reflective license plate.

[0008] Furthermore, in the above technical solution, the reflective film has a microprism air layer that achieves the reflective effect. When the microprism air layer is found to be unqualified in sealing, the microprism air layer is sealed by heat pressing or ultrasonic encapsulation according to the outline of the reflective film to prevent the adhesive liquid from penetrating into the microprism air layer and causing the reflective effect to fail.

[0009] Furthermore, in the above technical solution, the reflective film has a plurality of reflective windows, the edges of which are white inner pressure encapsulation patterns, and a white film layer is also provided in the reflective window. The white film layer connects to or covers the inner pressure encapsulation patterns, and multiple reflective holes are also provided in the white film layer at intervals as reflective points, thereby increasing the whiteness of the upper surface of the reflective film.

[0010] Furthermore, in the above technical solution, an anti-counterfeiting layer is also provided on the upper surface of the reflective film, which is covered by the adhesive liquid.

[0011] Furthermore, in the above technical solution, the anti-counterfeiting layer is printed on the upper surface of the reflective film with ink; or, the anti-counterfeiting layer is positioned and heat-pressed onto the upper surface of the reflective film by heat transfer.

[0012] Furthermore, in the above technical solution, the base plate is injection molded so that it directly has reflective film grooves, chip grooves and flow guide grooves after molding; or, the base plate is CNC engraved to form the reflective film grooves, chip grooves and flow guide grooves.

[0013] Furthermore, in the above technical solution, the adhesive liquid is any one of photocurable resin, thermocurable resin, and photothermal two-component curable resin.

[0014] Furthermore, in the above technical solution, the base plate is provided with a strip-shaped mounting hole, and a convex ring corresponding to the strip-shaped mounting hole is formed in the reflective film groove. The upper end of the convex ring is flush with the upper surface of the base plate. The reflective film is provided with a clearance hole corresponding to the position of the convex ring, and the edge of the clearance hole is sealed. The reflective film is fitted around the convex ring through the clearance hole, and the adhesive liquid also fills the gap between the clearance hole and the convex ring.

[0015] Furthermore, in the above technical solution, the part where the reflective film groove connects with the convex ring is also formed with a first annular recess; the part where the bottom surface and side wall of the reflective film groove connect is also formed with a second annular recess; and the adhesive liquid is also filled in the first annular recess and the second annular recess.

[0016] Furthermore, in the above technical solution, a number of positioning posts are formed in the chip slot; the RFID chip module is provided with positioning holes, which are embedded and fixed with the positioning posts, so that the RFID chip module is positioned in the chip slot, wherein the adhesive liquid also fills the gap between the positioning holes and the positioning posts.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: After placing the RFID chip module and the reflective film in the chip slot and reflective film slot on the base plate respectively, the present invention directly drips adhesive onto the upper surface of the reflective film. The adhesive completely penetrates and fills the reflective film slot, the guide slot, and the chip slot. The adhesive is allowed to stand, level, and solidify to form a colloid. This colloid completely encapsulates the reflective film and encapsulates and fixes the reflective film in the reflective film slot of the base plate. At the same time, the RFID chip module is... The chip slot is encapsulated and fixed to the base plate, and the adhesive is also fused with the base plate to form a solid product, thus creating a structurally stable RFID reflective license plate. The entire preparation method and process are extremely simple, with few steps, easy operation, and few parts. The finished product has a stable structure and high quality, and effectively prevents damage to the license plate number and other information. Because the RFID reflective license plate is a solid product, its stability and weather resistance are superior, and it has excellent impact and scratch resistance, giving it strong market competitiveness. In particular, this invention uses an adhesive dripping and curing method to encapsulate the RFID chip module and reflective film, eliminating the need for high-temperature environments. This method does not damage the RFID chip module and reflective film, nor does it damage the internal reflective structure of the reflective film, thus ensuring its reflectivity and extending the product's lifespan. Furthermore, since the colloid also encapsulates the RFID chip module, forming an inseparable structure, when the RFID reflective license plate is forcibly removed and the colloid is damaged, the RFID chip module will also be damaged, making it impossible to remove the complete and undamaged RFID chip module. This ensures that the product is inseparable; if it is separated, the entire product will be scrapped, thus guaranteeing its safety performance. Attached image description:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the invention from another angle;

[0020] Figure 3 This is an exploded view of the present invention;

[0021] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0022] Figure 5 This is a partial cross-sectional view of the present invention;

[0023] Figure 6 This is the front view of the reflective film before its improvement;

[0024] Figure 7 This is the front view of the improved reflective film. Detailed implementation method:

[0025] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0026] See Figure 1-7 As shown, this invention relates to a method for manufacturing an RFID reflective license plate, which includes the following steps:

[0027] S001: Prepare a base plate 1, wherein the base plate 1 has a reflective film groove 11, a chip groove 12 and a flow guide groove 13 located at the bottom of the reflective film groove 11 and connected to the chip groove 12;

[0028] S002: Place the RFID chip module 2 into the chip slot 12 of the base plate 1;

[0029] S003: According to the requirements, reflective film sheets are punched and formed into reflective film sheets of the appropriate size on the reflective film material in proportion;

[0030] S004: Place the reflective film 3 in the reflective film groove 11 and position it, and ensure that the reflective film 3 is flat, wherein a gap is formed between the outer edge of the reflective film 3 and the groove wall of the reflective film groove 11.

[0031] S005: Print the license plate number on the upper surface of the reflective film 3, or in step S003, pre-print the license plate number on the reflective film 3;

[0032] S006: The adhesive liquid is dripped onto the upper surface of the reflective film 3 and flows outward to the gap between the outer edge of the reflective film 3 and the wall of the reflective film groove 11, and then flows into the guide groove 13, so that the adhesive liquid overflows into the chip groove 12 to cover the RFID chip module 2. At the same time, the adhesive liquid covers the lower surface and the surrounding area of ​​the reflective film 3.

[0033] S007: The adhesive liquid is allowed to stand, level, and cure to form a colloid 4. The colloid 4 completely encapsulates the reflective film 3 and encapsulates and fixes the reflective film 3 in the reflective film groove 11 of the base plate 1. At the same time, the RFID chip module 2 is encapsulated and fixed in the chip groove 12 of the base plate 1. The colloid 4 is also fused with the base plate 1 and solidified into one piece to form a solid RFID reflective license plate.

[0034] In this invention, after placing the RFID chip module 2 and the reflective film 3 in the chip slot 12 and reflective film slot 11 on the base plate 1 respectively, an adhesive is directly dripped onto the upper surface of the reflective film 3. The adhesive completely penetrates and fills the reflective film slot 11, the guide channel 13, and the chip slot 12. The adhesive is allowed to stand, level, and solidify to form a colloid 4. This colloid 4 completely encapsulates the reflective film 3 and encapsulates and fixes the reflective film 3 in the reflective film slot 11 of the base plate 1. At the same time, the RFID chip module 2 is encapsulated and fixed to the base plate. The chip slot 12 of plate 1, and the colloid 4 are also fused with the base plate 1 to form a solid product, thus forming a structurally stable RFID reflective license plate. The entire preparation method and process are extremely simple, with few steps, easy operation, and few parts. The finished product has a stable structure and high quality, and can effectively prevent the license plate number and other information from being damaged. Since the RFID reflective license plate is a solid product, its stability and weather resistance are better, and it has ideal impact resistance and scratch resistance, giving it strong market competitiveness. In particular, this invention uses a drip-curing method to encapsulate the RFID chip module 2 and the reflective film 3, which does not require high-temperature environments. This method will not damage the RFID chip module 2 and the reflective film 3, nor will it damage the internal reflective structure of the reflective film 3, thus ensuring the product's service life. Furthermore, since the colloid 4 also encapsulates the RFID chip module 2, forming an inseparable structure, when the RFID reflective license plate is forcibly removed and the colloid 4 is damaged, the RFID chip module 2 will also be damaged, making it impossible to remove the complete and undamaged RFID chip module 2. This ensures that the product is inseparable, and if it is separated, the entire product will be scrapped, thus guaranteeing its safety performance.

[0035] The base plate 1 is injection molded, so that it directly has the reflective film groove 11, chip groove 12, and flow guide groove 13 after molding; or, the base plate 1 is CNC sculpted to form the reflective film groove 11, chip groove 12, and flow guide groove 13. This embodiment, as the preferred embodiment, uses injection molding to directly form the reflective film groove 11, chip groove 12, and flow guide groove 13 after molding, which is the simplest to manufacture and has the lowest cost.

[0036] The reflective film 3 contains a microprism air layer that achieves the reflective effect. This air layer has no electroplating layer and does not block signals, thus not affecting the normal operation of the RFID chip module 2. When the microprism air layer is found to be poorly sealed, it is sealed by heat pressing or ultrasonic encapsulation according to the contour of the reflective film. This prevents adhesive from penetrating into the microprism air layer and causing reflective failure, thereby ensuring the functional characteristics of the entire reflective film 3.

[0037] The reflective film 3 has a plurality of reflective windows 31, which are circular, honeycomb, square, or other different shapes. The edges of the reflective windows 31 are marked with white inner pressure encapsulation patterns 32. This is the structure of a conventional reflective film with reflective function; see [reference needed]. Figure 6 As shown. The present invention also makes improvements, combining... Figure 7 As shown, a white film layer 33 is also provided in the reflective window 31. This white film layer 33 is connected to or covers the inner pressure encapsulation pattern 32. The white film layer 33 also has multiple spaced reflective holes 331 that serve as reflective points. These reflective holes 331 are circular, honeycomb, square, or other different shapes, thereby increasing the whiteness of the upper surface of the reflective film 3, making the white area of ​​the entire reflective film 3 larger, resulting in a whiter RFID reflective license plate and achieving higher quality. The whiteness meets national standards. In short, this invention increases the size / area of ​​the inner pressure encapsulation pattern 32 and designs smaller reflective holes 331, thus making the entire RFID reflective license plate whiter.

[0038] The upper surface of the reflective film 3 is also provided with an anti-counterfeiting layer, which is used to achieve the anti-counterfeiting function. The anti-counterfeiting layer is covered by the adhesive liquid, which can better protect the anti-counterfeiting layer and prevent it from being damaged. The anti-counterfeiting layer is printed on the upper surface of the reflective film 3 by ink; or, the anti-counterfeiting layer is positioned and heat-pressed onto the upper surface of the reflective film 3 by heat transfer.

[0039] The adhesive solution is any one of photocurable resin, thermocurable resin, or photothermal two-component curable resin. In this embodiment, the adhesive solution is a transparent thermocurable resin, which is resistant to yellowing, high temperature (90℃), low temperature (40℃), and has a surface hardness of 2H or higher, thus better achieving scratch resistance. The thermocurable resin undergoes a combination of low-temperature surface curing and natural curing. Surface curing is achieved in 20 minutes at a low temperature (60℃), allowing for immediate shipment; the remaining 24 hours at room temperature completes the curing process, thereby improving production efficiency.

[0040] The base plate 1 is provided with a strip-shaped mounting hole 14, and a convex ring 15 corresponding to the strip-shaped mounting hole 14 is formed in the reflective film groove 11. The upper end of the convex ring 15 is flush with the upper surface of the base plate 1. The reflective film 3 is provided with a clearance hole 30 corresponding to the position of the convex ring 15. The edge of the clearance hole 30 is also sealed to ensure that the adhesive liquid will not penetrate into the interior of the reflective film and affect the reflective effect of the reflective film. The reflective film 3 is fitted around the convex ring 15 through the clearance hole 30, which can achieve the purpose of positioning the reflective film 3 and ensuring the quality of the entire RFID reflective license plate. The adhesive liquid also fills the gap between the clearance hole 30 and the convex ring 15, which can achieve the purpose of dust and water protection, while increasing structural strength and improving product quality.

[0041] The part where the reflective film groove 11 connects to the convex ring 15 is also formed with a first annular groove 151, which allows the adhesive liquid to overflow into the guide groove 13 better, achieving a better penetration and leveling effect; the part where the bottom surface and side wall of the reflective film groove 11 connects is also formed with a second annular groove 111, which allows the adhesive liquid to overflow into the guide groove 13 better, achieving a better penetration and leveling effect; the adhesive liquid is also filled in the first annular groove 151 and the second annular groove 111, thereby increasing the structural strength, making the adhesive liquid cured into a more firmly bonded to the base plate 1, resulting in better product quality and a longer service life.

[0042] The chip slot 12 also has several positioning posts 121 formed within it; the RFID chip module 2 is provided with positioning holes 21, which are embedded and fixed to the positioning posts 121, so that the RFID chip module 2 is positioned within the chip slot 12, ensuring the accuracy of the assembly structure and avoiding adverse effects such as installation misalignment. Furthermore, the adhesive fills the gap between the positioning holes 21 and the positioning posts 121, thereby increasing the structural strength and making the cured adhesive bond more firmly to the base plate 1, resulting in better product quality and a longer service life.

[0043] In summary, after placing the RFID chip module 2 and the reflective film 3 in the chip slot 12 and reflective film slot 11 on the base plate 1 respectively, the present invention directly drips adhesive onto the upper surface of the reflective film 3. The adhesive completely penetrates and fills the reflective film slot 11, the guide channel 13, and the chip slot 12. The adhesive is allowed to stand, level, and solidify to form a colloid 4. This colloid 4 completely encapsulates the reflective film 3 and encapsulates and fixes the reflective film 3 in the reflective film slot 11 of the base plate 1, while simultaneously encapsulating and fixing the RFID chip module 2. The chip slot 12 of the base plate 1 is integrated with the adhesive 4, forming a solid product. This creates a structurally stable RFID reflective license plate. The entire manufacturing method and process are extremely simple, with few steps, easy operation, and few parts. The finished product has a stable structure and high quality, effectively preventing damage to the license plate number and other information. As the RFID reflective license plate is a solid product, its stability and weather resistance are superior, and it possesses excellent impact and scratch resistance, giving it strong market competitiveness. In particular, this invention uses a drip-curing method to encapsulate the RFID chip module 2 and the reflective film 3, eliminating the need for high-temperature environments. This method does not damage the RFID chip module 2 or the reflective film 3, nor does it disrupt the internal reflective structure of the reflective film 3, thus ensuring its reflectivity and extending the product's lifespan. Furthermore, since the colloid 4 also encapsulates the RFID chip module 2, forming an inseparable structure, when the RFID reflective license plate is forcibly removed and the colloid 4 is damaged, the RFID chip module 2 will also be damaged, making it impossible to remove the complete and undamaged RFID chip module 2. This ensures that the product is inseparable, and if it is separated, the entire product will be scrapped, thus guaranteeing its safety performance.

[0044] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for manufacturing an RFID reflective license plate, characterized in that, The method includes the following steps: S001: Prepare a base plate (1), wherein the base plate (1) has a reflective film groove (11), a chip groove (12) and a flow guide groove (13) located at the bottom of the reflective film groove (11) and connected to the chip groove (12). S002: Place the RFID chip module (2) into the chip slot (12) of the base plate (1); S003: According to the requirements, reflective film sheets of the correct size are punched and formed on the reflective film material in proportion (3). S004: Place the reflective film (3) in the reflective film groove (11) and position it, and make sure that the reflective film (3) is flat, wherein a gap is formed between the outer edge of the reflective film (3) and the groove wall of the reflective film groove (11); S005: Print the license plate number on the upper surface of the reflective film (3), or in step S003, print the license plate number on the reflective film (3) in advance; S006: The amount of adhesive solution is dripped onto the upper surface of the reflective film (3), and flows outward to the gap between the outer edge of the reflective film (3) and the wall of the reflective film groove (11) before flowing into the guide groove (13), so that the adhesive solution overflows into the chip groove (12) to cover the RFID chip module (2). At the same time, the adhesive solution covers the lower surface and the surrounding area of ​​the reflective film (3); wherein, the adhesive solution is transparent; S007: The adhesive liquid is allowed to stand, level, and cure to form an adhesive (4). The adhesive (4) completely covers the reflective film (3) and encapsulates and fixes the reflective film (3) in the reflective film groove (11) of the base plate (1). At the same time, the RFID chip module (2) is encapsulated and fixed in the chip groove (12) of the base plate (1). The adhesive (4) is also fused with the base plate (1) and solidified into one, forming a solid RFID reflective license plate.

2. The method for manufacturing an RFID reflective license plate according to claim 1, characterized in that: The reflective film (3) has a microprism air layer that achieves the reflective effect. When the microprism air layer is found to be unqualified in sealing, the microprism air layer is sealed. It is sealed according to the outline of the reflective film by hot pressing or ultrasonic encapsulation to prevent the adhesive liquid from penetrating into the microprism air layer and causing the reflective effect to fail.

3. The method for manufacturing an RFID reflective license plate according to claim 1, characterized in that: The reflective film (3) has a plurality of reflective windows (31), the edges of which are white inner pressure encapsulation patterns (32), and a white film layer (33) is provided in the reflective window (31). The white film layer (33) connects to or covers the inner pressure encapsulation patterns (32), and a plurality of spaced reflective holes (331) are provided in the white film layer (33) as reflective points, thereby increasing the whiteness of the upper surface of the reflective film (3).

4. A method for manufacturing an RFID reflective license plate according to any one of claims 1-3, characterized in that: The upper surface of the reflective film (3) is also provided with an anti-counterfeiting layer, which is covered by the adhesive liquid.

5. The method for manufacturing an RFID reflective license plate according to claim 4, characterized in that: The anti-counterfeiting layer is printed on the upper surface of the reflective film (3) by ink; or, the anti-counterfeiting layer is positioned and heat-pressed onto the upper surface of the reflective film (3) by heat transfer.

6. A method for manufacturing an RFID reflective license plate according to any one of claims 1-3, characterized in that: The base plate (1) is injection molded so that it directly has a reflective film groove (11), a chip groove (12) and a flow guide groove (13) after molding; or, the base plate (1) is CNC engraved to form the reflective film groove (11), the chip groove (12) and the flow guide groove (13).

7. The method for manufacturing an RFID reflective license plate according to claim 6, characterized in that: The adhesive solution is any one of photocurable resin, thermocurable resin, or photothermal two-component curable resin.

8. A method for manufacturing an RFID reflective license plate according to any one of claims 1-3, characterized in that: The base plate (1) is provided with a strip-shaped mounting hole (14), and a convex ring (15) corresponding to the strip-shaped mounting hole (14) is formed in the reflective film groove (11). The upper end of the convex ring (15) is flush with the upper end surface of the base plate (1). The reflective film (3) is provided with a relief hole (30) corresponding to the position of the convex ring (15), and the edge of the relief hole (30) is sealed. The reflective film (3) is fitted around the convex ring (15) through the relief hole (30). The adhesive liquid also fills the gap between the relief hole (30) and the convex ring (15).

9. A method for manufacturing an RFID reflective license plate according to claim 8, characterized in that: The part where the reflective film groove (11) connects with the convex ring (15) is also formed with a first annular groove (151); the part where the bottom surface and side wall of the reflective film groove (11) connect is also formed with a second annular groove (111); the adhesive liquid is also filled in the first annular groove (151) and the second annular groove (111).

10. A method for manufacturing an RFID reflective license plate according to any one of claims 1-3, characterized in that: The chip slot (12) is also formed with a number of positioning posts (121); the RFID chip module (2) is provided with positioning holes (21), which are embedded and fixed with the positioning posts (121) so that the RFID chip module (2) is positioned in the chip slot (12), wherein the adhesive liquid also fills the gap between the positioning holes (21) and the positioning posts (121).

Images