Automotive windshield embedded transparent antenna

Abstract

The utility model relates to antenna technical field especially relates to a kind of car windshield embedded transparent antenna, including acrylic pedestal, the acrylic pedestal inside is provided with transparent antenna body, the front end of transparent antenna body is connected with FPC connecting sheet, the both sides of acrylic pedestal are slidably provided with multiple limit rods, first elastic member is sleeved on each limit rod, and the both ends of first elastic member are respectively connected with limit rod and acrylic pedestal. By setting transparent cover plate in acrylic pedestal, and cooperating with limit rod and first elastic member, detachable protective structure is formed, effectively prevent external mechanical scratching, collision or cleaning operation to cause pollution or damage to transparent antenna body, significantly improve the long-term working stability and reliability of antenna.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a transparent antenna embedded in an automotive windshield. Background Technology

[0002] With the rapid development of modern wireless communication technology, especially the widespread application of high-frequency and high-speed communication technologies such as 5G, IoT, vehicle-to-everything (V2X), and satellite navigation, higher requirements have been placed on the performance, integration, and application scenarios of antenna systems. In many application fields, traditional metal antennas, due to their visual obtrusiveness, large space occupation, and impact on product appearance design, can no longer meet the needs of modern electronic devices for aesthetics, concealment, and multi-functional integration. Against this backdrop, transparent antennas, as a new type of antenna, are widely used in smart buildings, mobile terminals, and vehicle systems due to their excellent electromagnetic wave radiation and reception performance and high light transmittance. In the field of smart cars, especially with the popularization of autonomous driving and V2X technologies, vehicles need to be equipped with multi-band and multi-system antenna modules. Placing transparent antennas on or inside the windshield has become an important technical path to achieve "invisible antennas and seamless communication."

[0003] Patent CN215732184U, authorized by patent publication number CN215732184U, discloses a transparent thin-film antenna that can be attached to car windows or interior windows. The antenna uses transparent conductive material to make the radiating element and feed line, and is directly attached to the glass surface through an adhesive layer. Its advantages are: convenient installation, no damage to the original structure, the feed line can be hidden to achieve visual concealment, and the length of the radiating arm can be shortened by optimizing the shape of the line, thereby reducing the antenna size and widening the operating bandwidth. In addition, its patterned design also has a certain decorative effect, enhancing the technological feel and aesthetics of the product. However, in practical applications, this patent lacks a rigid protective structure. The antenna is attached to the glass surface in the form of an exposed thin film, which is easily damaged by scratches, collisions or cleaning operations, resulting in a decrease in electrical performance.

[0004] Therefore, there is an urgent need to provide a transparent antenna embedded in the windshield of a car with a protective structure. Utility Model Content

[0005] In order to overcome the shortcomings of existing transparent antennas, such as poor protection performance, susceptibility to scratches, collisions or cleaning operations, and resulting decline in electrical performance, this utility model provides a transparent antenna embedded in the windshield of an automobile with a protective structure.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: an embedded transparent antenna for automotive windshields, comprising an acrylic base, a transparent antenna body disposed within the acrylic base, an FPC connecting piece connected to the front end of the transparent antenna body, multiple limiting rods slidably disposed on both sides of the acrylic base, a first elastic element sleeved on each limiting rod, the two ends of the first elastic element being connected to the limiting rod and the acrylic base respectively, a transparent cover plate disposed inside the acrylic base, the transparent cover plate covering the surface of the transparent antenna body, and transparent adhesive disposed at the bottom of the acrylic base.

[0007] As a further preferred embodiment, the ends of the multiple limiting rods on the same side that are away from the inner cavity of the acrylic base are connected by a connecting rod structure.

[0008] As a further preferred embodiment, each of the limiting rods has an inclined surface on the top surface of one end near the inner cavity of the acrylic base.

[0009] As a further preferred embodiment, a support base is provided on the front side of the acrylic base, a rotating shaft is rotatably provided on the top of the support base, a pressure plate is provided on the rotating shaft, slots are provided on both sides of the inside of the support base, and a locking ball matching the slot is slidably installed on both sides of the pressure plate, and a second elastic element is connected to the pressure plate by the locking ball.

[0010] As a further preferred embodiment, the bottom of the pressure plate is provided with a groove.

[0011] As a further preferred embodiment, the acrylic base has a rectangular notch on its rear side.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By setting a transparent cover plate inside the acrylic base and cooperating with the limiting rod and the first elastic element, a detachable protective structure is formed, which effectively prevents external mechanical scratches, collisions or cleaning operations from causing pollution or damage to the transparent antenna body, and significantly improves the long-term working stability and reliability of the antenna.

[0013] 2. The FPC connecting piece on the transparent antenna body is inserted into the support base and then pressed and fixed by a rotating pressure plate and an elastic buckle structure to improve the vibration resistance and anti-loosening ability of the FPC connecting piece. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional cross-sectional view of the acrylic base, transparent antenna body, and FPC connecting piece of this utility model.

[0016] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 This is an exploded view of the acrylic base, transparent cover, and transparent adhesive of this utility model.

[0018] Figure 5 This is a three-dimensional sectional view of the support base, rotating shaft, and pressure plate of this utility model.

[0019] Figure 6 This utility model Figure 5 Enlarged view of point B in the middle.

[0020] Figure 7 This is an exploded view of the support base, FPC connecting piece, and retaining ball of this utility model.

[0021] The component names and serial numbers in the figure are as follows: 1: Acrylic base, 2: Transparent antenna body, 3: FPC connecting piece, 4: Limiting rod, 5: First elastic element, 6: Transparent cover plate, 7: Transparent adhesive, 8: Support base, 9: Rotating shaft, 10: Pressure plate, 11: Slot, 12: Ball retainer, 13: Second elastic element, 14: Groove, 15: Rectangular notch. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-4 An embedded transparent antenna for automotive windshields includes an acrylic base 1, a transparent antenna body 2 disposed inside the acrylic base 1, an FPC connecting piece 3 connected to the front end of the transparent antenna body 2, four limiting rods 4 slidably disposed on both sides of the acrylic base 1, the limiting rods 4 being movable reciprocally in the horizontal direction, a first elastic element 5 sleeved on each limiting rod 4, the two ends of the first elastic element 5 being connected to the limiting rod 4 and the acrylic base 1 respectively, for providing an inward elastic pre-tightening force to the limiting rod 4, a transparent cover plate 6 disposed inside the acrylic base 1, the transparent cover plate 6 covering the surface of the transparent antenna body 2 for sealing and protecting the transparent antenna body 2, and a transparent adhesive 7 disposed at the bottom of the acrylic base 1 for bonding the entire device to the automotive windshield.

[0024] Please see Figure 4The four limiting rods 4 on the same side are connected by a connecting rod structure at the ends away from the inner cavity of the acrylic base 1 so as to move synchronously. Furthermore, each limiting rod 4 has an inclined surface on the top surface of the end near the inner cavity of the acrylic base 1, which facilitates the sliding of the limiting rod 4 when the transparent cover plate 6 is pressed down.

[0025] Please see Figure 4 The acrylic base 1 has a rectangular notch 15 on the rear side, which facilitates the removal of the transparent cover plate 6 from the rear side during disassembly, thereby improving disassembly efficiency.

[0026] In use, the transparent antenna body 2 is placed inside the acrylic base 1, and the transparent cover plate 6 is vertically inserted into the acrylic base 1 from above. During the pressing process, the side of the transparent cover plate 6 contacts the inclined surface of the limiting rod 4. As the cover plate continues to be pressed down, the inclined surface converts the horizontal resistance into a lateral thrust on the limiting rod 4, forcing the limiting rod 4 to overcome the elastic force of the first elastic element 5 and slide out to both sides, making room for the cover plate. When the transparent cover plate 6 is fully pressed into place, its upper surface is lower than the position of the limiting rod 4. At this time, the limiting rod 4, under the restoring force of the first elastic element 5, naturally... The transparent cover plate slides back to its original position, forming a horizontal limit to prevent it from coming off upwards. After the transparent cover plate 6 is locked by the limiting rod 4, the entire transparent antenna body 2 is sealed between the acrylic base 1 and the transparent cover plate 6, providing physical protection. Subsequently, the entire device can be firmly attached to the inside of the car windshield using the transparent adhesive 7 at the bottom of the acrylic base 1, without obstructing the view. When it is necessary to replace or repair the transparent antenna body 2, the transparent cover plate 6 can be pushed forward from the rectangular notch 15 on the rear side of the acrylic base 1 to expose the transparent antenna body 2 for easy maintenance.

[0027] Example 2: Based on Example 1, please refer to... Figures 5-7 The acrylic base 1 has a support seat 8 on its front side for accommodating and supporting the FPC connecting piece 3. The support seat 8 has a rotating shaft 9 on its top, and a pressure plate 10 for pressing the FPC connecting piece 3 on the rotating shaft 9. The pressure plate 10 has a groove 14 at its bottom. The groove 14 is designed to facilitate manual rotation of the pressure plate 10 by the user. The support seat 8 has slots 11 on both the left and right sides. The pressure plate 10 has ball bearings 12 that match the slots 11 on both the left and right sides. The ball bearings 12 lock the pressure plate 10 by engaging the slots 11. The ball bearings 12 are connected to the pressure plate 10 by a second elastic element 13, which provides elastic preload to the ball bearings 12.

[0028] Before placing the transparent antenna body 2, push the groove 14 on the pressure plate 10 upwards, causing the pressure plate 10 to rotate upwards around the pivot 9 and open. At this time, the retaining ball 12 is squeezed inwards by the inner wall of the support base 8, causing it to disengage from the retaining groove 11. The second elastic element 13 is then compressed. After the pressure plate 10 is opened, the retaining ball 12 returns to its original position under the action of the second elastic element 13. When the transparent antenna body 2 is placed inside the acrylic base 1, align the FPC connecting piece 3 with the slot of the support base 8 and insert it horizontally. Then, rotate the pressure plate 10 downwards so that it covers the FPC connecting piece 3. The retaining ball 12 is then squeezed. When the pressure plate 10 is close to the closed position, the retaining ball 12 aligns with the retaining groove 11 on the support base 8. Under the push of the second elastic element 13, the retaining ball 12 automatically pops outwards and embeds into the retaining groove 11, completing the mechanical locking and realizing the individual fixation of the FPC connecting piece 3, preventing it from loosening due to vibration or thermal expansion and contraction.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A transparent antenna embedded in a car windshield, comprising an acrylic base (1), wherein a transparent antenna body (2) is disposed inside the acrylic base (1), and an FPC connecting piece (3) is connected to the front end of the transparent antenna body (2), characterized in that, Multiple limiting rods (4) are slidably arranged on both sides of the acrylic base (1). Each limiting rod (4) is fitted with a first elastic element (5). The two ends of the first elastic element (5) are respectively connected to the limiting rod (4) and the acrylic base (1). A transparent cover plate (6) is provided inside the acrylic base (1). The transparent cover plate (6) covers the surface of the transparent antenna body (2). A transparent adhesive (7) is provided at the bottom of the acrylic base (1).

2. The automotive windshield embedded transparent antenna according to claim 1, characterized in that, The ends of the multiple limiting rods (4) on the same side that are away from the inner cavity of the acrylic base (1) are connected by a connecting rod structure.

3. A transparent antenna embedded in a car windshield according to claim 2, characterized in that, Each of the limiting rods (4) has an inclined surface on the top surface of one end near the inner cavity of the acrylic base (1).

4. A transparent antenna embedded in a car windshield according to claim 3, characterized in that, The acrylic base (1) is provided with a support seat (8) on the front side. The support seat (8) is rotatably provided with a rotating shaft (9) on the top. A pressure plate (10) is provided on the rotating shaft (9). The support seat (8) has slots (11) on both sides inside. The pressure plate (10) has ball bearings (12) that match the slots (11) slidably installed on both sides. The ball bearings (12) are connected to the pressure plate (10) by a second elastic element (13).

5. A transparent antenna embedded in a car windshield according to claim 4, characterized in that, The bottom of the pressure plate (10) is provided with a groove (14).

6. A transparent antenna embedded in a car windshield according to claim 5, characterized in that, A rectangular notch (15) is provided on the rear side of the acrylic base (1).

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