TWI834113B - Simple vehicle registration UHF radio frequency electronic identifier - Google Patents

Abstract

A simple vehicle registration UHF wireless radio frequency electronic identifier. It is an identifier used to match license plates and used on vehicles as wireless identification. It can resist metal interference and obtain long-distance reading performance. The plate clip is made of plastic. During injection molding, the male mold and the female mold of the injection mold can directly open/close the mold in the same axial direction with each other to complete the clamping part. In addition to allowing the mold to omit the slider design, reduce mold complexity and production costs, and make In addition to the mold being more durable and easier to maintain, there is no sliding action factor of the slider when opening/closing the mold, and the injection molding work of the clamping part can be significantly shortened by the opening/closing stroke of the mold. , improve the production efficiency of the clamping parts.

Description

Simple vehicle registration UHF radio frequency electronic identifier

The invention relates to a simple vehicle tagging ultra-high frequency wireless radio frequency electronics that can reduce the complexity and production cost of the mold, significantly shorten the opening/closing action stroke of the mold, and improve the production efficiency. recognizer.

According to the inventor, the Republic of China Patent No. I646468 "Wireless Electronic Identifier for Vehicle Registration" is an identifier that matches a vehicle and is installed at the vehicle registration place, and a radio frequency reader can be used for wireless identification; the identifier , including at least a plate-bearing plate, a radio frequency tag and a groove piece; the plate-bearing plate is made of insulating polymer material and has a plate body, and the plate surface of the plate body is opposite to the license plate. A pair of mounting holes are provided with a pair of perforations, and a label setting frame part with an L-shaped cross section is formed at one end. The label setting frame part has a long bar frame, and the long bar frame is connected to the plate. There is a U-shaped card slot formed between the bodies. A section of the card slot is made by opening a hollow hole in the plate body to expose a part of the inner surface of the long strip frame, and the long strip frame The inner surface of the body is exposed at the hollow hole and is provided with a long groove; the radio frequency tag is installed in the long groove of the long bar frame and is a long bar shape relative to the regular groove shape. The UHF electronic tag has an insulating base material sheet. On one end surface of the insulating base material sheet, a metal film antenna is provided. The metal film antenna is provided with a perforated slot, and a perforated slot is opened on one long side. The groove is used as a loop pad (Pad) on both sides of the groove to electrically connect a radio frequency identification chip (RFID IC); the groove sealing piece is a strip formed of insulating material and is fixed Seal the radio frequency tag in the long groove at the notch of the long groove;

When the license plate is to be listed on the vehicle, one long end of the license plate is inserted into the plate slot of the identifier, and the pair of mounting holes of the license plate are opposite to the pair of perforations of the identifier respectively; only one screw is required to be installed. And through the mounting hole and the perforation, the license plate and the identifier can be installed on the vehicle together; there is an isolation space between the wireless radio frequency tag and the license plate in the elongated frame of the identifier, so that the wireless radio frequency tag The perforated groove of the upper metal film antenna forms a resonant cavity, so that the metal film antenna can resonate and induce the electromagnetic wave signal reflected on the surface of the license plate through the resonant cavity, and then in the frequency band and field pattern of the perforated groove and groove Under the adjustment effect, the electromagnetic wave signal of a frequency band is transmitted to the radio frequency identification chip.

However, the above-mentioned conventional wireless electronic identifier is used as a wireless identification on vehicles. Although it can resist metal interference and has long-distance reading performance, as shown in Figures 1 and 2, its plate bearing plate is demoulded from the injection molding mold. , because the radio frequency tag inside the bar frame 1 needs to be sufficiently wide (the slot depth of the card slot 2 is deep), the U-shaped card slot 2 has a large impedance when demoulding (the slider 3 is set at The contact area on the board is large, making it difficult to _unmold ), and the ejection stroke In order to match the depth of the radio frequency tag of 22mm, the sliding distance M1 of the slider ₃ must be at least greater than or equal to 22mm, then the ejection stroke ), opening/closing the mold and maintaining the mold require a lot of time and cost, so the conventional wireless electronic identification device for vehicle registration still has room for improvement.

The main purpose of the present invention is to provide a simple ultra-high frequency wireless radio frequency electronic identifier for vehicle registration. An identifier matches a license plate and is installed at the vehicle registration place. It can be used with a wireless A radio frequency reader performs wireless identification; the identifier at least includes a card clip, a radio frequency tag and a slot piece; the card clip is made of insulating polymer material and has a card lining plate. The plate surface of the lining plate is provided with a pair of perforations relative to the pair of mounting holes of the license plate, and a long slot-shaped through hole is provided near the upper edge between the pair of perforations. There is an edge face left between the upper edges. A connecting leg extends from the front end of the edge face. The lower end of the front edge of the connecting leg extends to form a label setting plate parallel to the card plate. The label setting The size of the plate-shaped body formed by the two sides and the bottom of the plate body is within the shape and size range of the long slot-shaped through hole, and has an inner surface toward the direction of the long slot-shaped through hole. Between the inner surface and the plate surface of the lining plate, a plate insertion hole is formed relative to the thickness of the license plate, and the inner surface is also provided with a long hole-shaped label storage groove; the radio frequency tag is installed on The tag is placed in the tag storage slot of the board body and is a long strip-shaped UHF electronic tag with a shape corresponding to the tag storage slot. It has an insulating base material sheet, and a metal film is provided on one end surface of the insulating base material sheet. Antenna, the metal film antenna is provided with a perforated slot, and a trench is opened from the perforated slot to one long side, and both sides of the trench are used as loop pads (Pads) to electrically connect a radio frequency identification chip (RFID). IC); the sealing piece is a strip formed of insulating material, which is fixed on the notch of the tag storage slot to seal the radio frequency tag in the tag storage slot; when the license plate is to be placed on the vehicle registration place When the license plate is listed, the upper edge of the license plate is inserted into the plate slot of the identifier, and the pair of mounting holes of the license plate are opposite to the pair of through holes of the identifier respectively; only the installation screws need to be penetrated through the By pairing the mounting holes and the pair of perforations, the license plate and the identifier can be installed together on the registration plate on the vehicle; through the tag setting plate of the identifier, there is an isolation space between the radio frequency tag and the license plate, so that the The perforated slots of the metal film antenna on the radio frequency tag form a resonant cavity, so that the metal film antenna can pass through the resonant cavity and target the vehicle. The electromagnetic wave signal reflected on the surface of the license plate resonates and induces, and then, under the adjustment of the frequency band and field pattern of the perforated slots and grooves, the electromagnetic wave signal of a frequency band is transmitted to the radio frequency identification chip; the overall structure is suitable for use in vehicle license plates. As a wireless identification, it can resist metal interference and obtain long-distance reading performance. When the clamp is used in plastic injection molding, the male and female molds of the injection mold can directly open/close the mold with the same axial direction. The action of completing the clamping part allows the mold to omit the slider design, reduce the complexity and production cost of the mold, and make the mold more durable and easier to maintain. There is no sliding action factor of the slider when the mold is opened/closed. , and also enables the injection molding work of the card clamping part to significantly shorten the opening/closing stroke of the mold, thereby improving the production efficiency of the card clamping part.

A second object of the present invention is to provide a simple ultra-high frequency radio frequency electronic identifier for vehicle registration, wherein the mutual distance between the two sides of the label setting plate is symmetrical to the center line of the long slot-shaped penetration hole, and It is defined as the board width, and the distance extending from the lower end of the front edge of the connecting pin is defined as the board height. The dimensions of the board width and the board height are smaller than the slot width and slot height of the long slotted through hole. size, the physical size of the label setting plate completely falls within the slot shape and size range of the elongated slot-shaped penetration hole, so that the male and female molds of the card clip can be docked during the injection molding process. The inserting card hole slot is directly and completely formed by the upper mold core of the male mold coaxially in the opening/closing direction of the mold, eliminating the need for the design and use of the slider; and the above-mentioned plate width and plate height dimensions of the label setting plate are smaller than the The slot width and slot height dimensions of the elongated slot-shaped through-hole shall be at least less than 1 millimeter (mm) respectively.

Another object of the present invention is to provide a simple ultra-high frequency wireless radio frequency electronic identifier for vehicle registration, wherein the radio frequency tag is installed in the tag storage slot, and the gap in the tag storage slot is filled with insulating material. Sealing glue, through the insulating sealing glue, the radio frequency tag is Producing movement restrictions so that the radio frequency tag can be installed in the tag storage slot to achieve a stable effect after assembly.

Another object of the present invention is to provide a simple ultra-high frequency wireless radio frequency electronic identifier for vehicle registration, wherein the perforated slot of the metal film antenna on the wireless radio frequency tag is a long rectangular slot matching the license plate, and The groove is a groove-shaped hole perpendicular to the hole groove. The induction frequency band and field pattern of the electromagnetic wave signal reflected by the license plate can be adjusted by the hole shape size of the hole hole groove and the groove width. This enables wireless radio frequency tags to achieve good reading sensitivity in the frequency band used and obtain long-distance reading effects.

1:bar frame

2: Card slot

3: Slider

4: oblique pin

X ₁ : Mold ejection stroke

M1: Slip distance

10:Identifier

20: Card clipping parts

21: Lining plate

22:Perforation

23:Long grooved penetration hole

C: Center line

W1: Slot width

H1: Slot height

24: Edge face

25: Connecting pins

26: Label setting board body

W2: Board width

H2: Board height

260, 261: side

262: Bottom

263:Inner face

27: Card slot

28: Label storage slot

29: Insulation sealant

30: Radio frequency tag

31: Insulating base material sheet

32:Metal film antenna

33: broken hole slot

34:Trench

35: RFID chip

40: Groove sealing piece

50:License plate

51:Mounting hole

60:Installation screws

70:Vehicle

80:Mold

81:Male model

810:Moren

82:Mother model

X ₂ : itinerary

T: total thickness

Figure 1 is a schematic diagram of the structure of the mold slider during injection molding of custom plate bearing plates using wireless electronic identifiers.

Figure 2 is a schematic diagram of the ejection state of the mold slider during injection molding of the brand-name plate parts using a conventional wireless electronic identifier.

Figure 3 is a three-dimensional appearance view of the integrated license plate recognition device of the present invention.

Figure 4 is an exploded perspective view of the structure of the identifier of the present invention.

Figure 5 is a front three-dimensional appearance view of the card clip of the present invention.

Figure 6 is a front view of the radio frequency identification tag of the present invention

Figure 7 is a cross-sectional structural diagram of the identifier of the present invention.

Figure 8 is a schematic three-dimensional view of the present invention installed on a vehicle with a license plate.

Figure 9 is a schematic cross-sectional view of the present invention installed on a vehicle with a license plate.

Figure 10 is a schematic diagram of the mold structure during injection molding of the card clip part of the present invention.

Figure 11 is a schematic diagram of the mold opening/closing stroke during injection molding of the clip-on part of the present invention.

In order to achieve the above object, the present invention specifically enumerates the preferred embodiments and describes them in detail as follows with reference to the accompanying drawings: A simple vehicle registration UHF wireless radio frequency electronic identifier, as shown in Figures 3 to 7, is an identifier 10 Matches a license plate 50 and installs it at the vehicle registration place, and a radio frequency reader (not shown) can be used for wireless identification; the identifier 10 at least includes a plate clip 20, a radio frequency tag 30 and a slot piece 40; The plate clip 20 is made of insulating polymer (plastic) material and has a plate lining plate 21. The plate surface of the plate lining plate 21 is provided with a pair of mounting holes 51 relative to the license plate 50. A pair of perforations 22 is provided with a long slot-shaped through hole 23 near the upper edge between the pair of perforations 22. An edge surface 24 remains between the long slot-shaped through hole 23 and the upper edge. The edge surface 24 A connecting leg piece 25 extends from the front end of the connecting leg piece 25. The lower end of the front edge of the connecting leg piece 25 extends to form a label setting plate 26 parallel to the lining plate 21. Both sides 260 of the label setting plate 26 , 261 and the bottom edge 262 are formed within the slot shape and size range of the elongated slot-shaped through hole 23, and have an inner surface 263 toward the elongated slot-shaped through hole 23. Between the inner surface 263 and the plate surface of the lining plate 21, relative to the thickness of the license plate 50, a card insertion hole 27 is formed, and the inner surface is also provided with a long hole-shaped tag storage slot 28; the radio frequency tag 30 is installed in the tag storage slot 28 of the tag setting plate 26. It is a long strip-shaped UHF electronic tag with a shape corresponding to the tag storage slot 28, and has an insulating base material sheet 31 (which can be polyethylene). Imine PI sheet or epoxy glass fiber FRP sheet), a metal film antenna 32 (can be an aluminum foil or copper foil film antenna) is provided on one end surface of the insulating base material sheet 31, and a break is provided on the metal film antenna 32 The hole slot 33 has a trench 34 on one long side, and both sides of the trench 34 are used as loop pads (Pads) to electrically connect a radio frequency identification chip 35 (RFID IC); the seal The slot piece 40 is a strip made of insulating material (such as plastic material), which is fixed (covered) on the slot of the tag storage slot 28 to seal the radio frequency tag 30 in the tag storage slot 28; As shown in Figure 3, when the license plate 50 is to be placed on the vehicle registration place, the upper edge of the license plate 50 is inserted into the plate insertion hole 27 of the identifier 10, and the pair of mounting holes 51 of the license plate 50 are respectively Opposite to the pair of through holes 22 of the identifier 10, as shown in Figures 3, 8, and 9, only the screws 60 need to be installed and penetrated through the pair of mounting holes 51 and the pair of through holes 22, so that the license plate 50 and the identifier 10 can be connected. They are installed together at the registration place on the vehicle 70; as shown in Figures 6 and 9, there is an isolation space between the radio frequency tag 30 and the license plate 50 in the tag setting plate 26 of the identifier 10, so that the radio frequency tag 30 can The perforated slot 33 of the metal film antenna 32 forms a resonant cavity, so that the metal thin film antenna 32 can resonate and induce the electromagnetic wave signal reflected on the surface of the license plate 50 through the resonant cavity, and then in the perforated slot 33 and the groove 34 Under the action of adjusting the frequency band and field type, the electromagnetic wave signal of a frequency band is transmitted to the radio frequency identification chip 35; as shown in Figures 8 and 9, the overall structure is used to match the license plate 50 and used on the vehicle 70 as a wireless identification, which can resist metal interference and On the premise of obtaining long-distance reading performance, as shown in Figures 10 and 11, during plastic injection molding (manufacturing) of the card clip 20, the male mold 81 and the female mold 82 of the injection mold 80 can be opened directly to each other in the same axial direction. / The mold closing action completes the clamping part 20, which not only enables the mold 80 to omit the slider design, reduces the complexity of the mold 80 and the cost of mold opening and production, and makes the mold 80 more durable and easier to maintain, the mold 80 opens/closes There is no sliding action factor of the slider during molding, and the injection molding work of the clamp 20 can be significantly shortened by the mold opening/closing stroke X ₂ of the mold 80, that is, the mold opening/closing stroke X ₂ , As long as the distance is more than 2 times the total thickness T (X ₂ =2T) of the clamping part 20 (workpiece), it is enough to complete the ejection of the clamping part 20 (compared to the conventional technology in Figures 1 and 2, the above-mentioned opening/closing The mold stroke X ₂ is only about 1/3 of the conventional mold retraction stroke X ₁ ), which effectively improves the production efficiency of the clamping part 20 and thereby improves the overall economic benefits of the identifier 10 .

According to the above embodiment, as shown in Figures 4 and 5, the mutual distance between the two sides 260 and 261 of the label setting plate 26 is symmetrical to the center line C of the long groove-shaped through hole 23, and is defined as the plate width W2, And the distance extending from the lower end of the front edge of the connecting pin piece 25 is defined as the board height H2. The board width W2 and the board height H2 are smaller than the slot width W1 and the slot hole of the elongated slot-shaped through hole 23. The height H1 dimension, by virtue of the physical size of the label setting plate 26, completely falls within the slot shape and size range of the long groove-shaped penetration hole 23, as shown in Figures 11 and 12, so that the card clip 20 can be injected during injection When the male and female molds 81 and 82 are connected during the molding process, the insert hole slot 27 can be directly and completely formed by the upper mold core 810 of the male mold coaxially in the mold opening/closing direction, eliminating the need for the design and use of the slider; As shown in Figures 4 and 5, the width W2 and height H2 of the label setting plate 26 are smaller than the slot width W1 and slot height H1 of the elongated slot-shaped through hole 23, which are at least less than 1 mm respectively. (mm).

According to the above embodiment, as shown in Figures 4 and 7, the radio frequency tag 30 is installed in the tag storage slot 28. The gap in the tag storage slot 28 is filled with insulating sealant 29. Through the insulating sealant, The glue 29 restricts the movement of the radio frequency tag 30 so that the installation of the radio frequency tag 30 in the tag storage slot 28 can achieve a stable effect after assembly.

According to the above embodiment, as shown in Figures 3, 4, 6 and 9, the hole slot 33 of the metal film antenna 32 on the radio frequency tag 30 is a length matching the length of the license plate 50. The groove 34 is a groove-shaped hole perpendicular to the hole groove 33. The size of the hole shape of the hole groove 33 and the groove width of the groove 34 can reflect the license plate 50. The electromagnetic wave signal adjusts the sensing frequency band and field type so that the wireless radio frequency tag 30 can achieve good reading sensitivity in the use frequency band and obtain long-distance reading effects. [Note: The radio frequency tag 30 implemented here follows the tag used in the previous invention and is used on the clip 20. The wireless identification performance achieved is equivalent to that of the previous invention, so no performance test data is required. . 】

The above description is only illustrative of the present invention and not restrictive. Those of ordinary skill in the art will understand that many modifications, changes, etc. can be made without departing from the spirit and scope of the appended description. effect, but all will fall within the protection scope of the present invention.

10:Identifier

20: Card clipping parts

21: Lining plate

22:Perforation

23:Long grooved penetration hole

C: Center line

W1: Slot width

H1: Slot height

24: Edge face

25: Connecting pins

26: Label setting board body

263:Inner face

27: Card slot

28: Label storage slot

30: Radio frequency tag

31: Insulating base material sheet

32:Metal film antenna

33: broken hole slot

34:Trench

35: RFID chip

40: Groove sealing piece

Claims (4)

A simple ultra-high frequency wireless radio frequency electronic identifier for vehicle registration. An identifier matches a license plate and is installed at the vehicle registration place. A wireless radio frequency reader can be used for wireless identification; the identifier at least includes a plate clip and a license plate. A radio frequency tag and a slot plate; the plate clamping piece is made of insulating polymer material and has a plate lining plate. The plate surface of the plate lining plate is provided with a pair of mounting holes relative to the license plate. Perforations, and a long slot-shaped through hole is provided near the upper edge between the pair of perforations. There is an edge face left between the long slot-shaped perforation hole and the upper edge, and a connecting section extends from the front end of the edge face. The lower end of the front edge of the connecting foot piece extends to form a label setting plate parallel to the lining plate. The size of the plate formed by the two sides and the bottom of the label setting plate is determined by Within the slot shape and size range of the elongated slot-shaped through hole, there is an inner surface in the direction of the elongated slot-shaped through hole. Between the inner surface and the plate surface of the lining plate plate, relative to the thickness of the license plate, A card insertion hole is formed, and the inner surface is also provided with a long hole-shaped tag storage slot; the radio frequency tag is installed in the tag storage slot of the tag setting plate body, and has a shape corresponding to the tag storage slot The long strip-shaped UHF electronic tag has an insulating base material sheet. On one end surface of the insulating base material sheet, a metal film antenna is provided. The metal film antenna is provided with a perforated slot, and the perforated slot is connected to a A groove is opened on the long side, and both sides of the groove are used as loop pads (Pads) to electrically connect a radio frequency identification chip (RFID IC); the groove sealing piece is a strip formed of insulating material, which is fastened is provided on the notch of the tag storage slot to seal the radio frequency tag in the tag storage slot; wherein, The label sets the mutual distance between the two sides of the board body to be symmetrical to the center line of the long groove-shaped penetration hole, and is defined as the board width, and the distance extending from the lower end of the front edge of the connecting foot piece is defined as the board height. The board The width and height dimensions of the plate are smaller than the slot width and slot height dimensions of the elongated slot-shaped through hole. The simple vehicle registration ultra-high frequency radio frequency electronic identifier as described in claim 1, wherein the width and height of the label setting plate are smaller than the slot width and slot height of the elongated slot-shaped penetration hole size, respectively, at least less than 1 millimeter (mm). The simple ultra-high frequency radio frequency electronic identifier for vehicle registration as described in claim 1, wherein the radio frequency tag is installed in the tag storage slot, and the gap in the tag storage slot is filled with insulating sealant. The simple ultra-high frequency radio frequency electronic identifier for vehicle registration as described in claim 1, wherein the hole slot of the metal film antenna on the radio frequency tag is a long rectangular slot matching the license plate, and the groove , it is a groove-shaped hole perpendicular to the hole groove.

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