FPC antenna and laser page turning pen

Abstract

The utility model relates to FPC antenna technical field, concretely relates to a kind of FPC antenna and laser page turning pen.FPC antenna includes flexible circuit board and antenna wiring, and antenna wiring is arranged on flexible circuit board.Antenna wiring includes first wiring segment, second wiring segment, third wiring segment, fourth wiring segment, fifth wiring segment;First wiring segment one end and second wiring segment bend one end are connected with the first direction bending, and second wiring segment other end and third wiring segment bend one end are connected with the first direction bending, and third wiring segment other end and fourth wiring segment bend one end are connected with the first direction bending, and fourth wiring segment other end and fifth wiring segment bend one end are connected with the first direction bending, to form annular with first gap, and fifth wiring segment other end and the other end of first wiring segment are oppositely arranged to form first gap.The first direction is clockwise direction or counterclockwise direction.FPC antenna uses flexible circuit board as the carrier of antenna wiring, so that FPC antenna is easy to deform.

Description

Technical Field

[0001] This utility model relates to the field of laser page turner technology, and in particular to an FPC antenna and a laser page turner. Background Technology

[0002] Traditional wired page turners severely restrict the speaker's range of motion due to the constraints of cables, while ordinary remote controls are limited in function and usually lack laser pointer functionality. With the continuous advancement of wireless communication technology, laser page turners have emerged. They feature wireless control capabilities, making them convenient and flexible to operate, and offering richer and more diverse functions. In addition to wireless page turning, they also include laser pointer functionality, allowing speakers greater freedom of movement and more natural interaction with the audience.

[0003] Laser page turners transmit signals via antennas, but due to the miniaturization of laser page turners and the need to consider antenna transmission performance, the space for antenna placement within the laser page turner is limited, making setup difficult. Utility Model Content

[0004] This utility model provides an FPC antenna and a laser page turner to solve the problems of limited space for wiring within the laser page turner and the difficulty in setting it up.

[0005] This utility model discloses an FPC antenna, including a flexible circuit board and antenna traces, wherein the antenna traces are disposed on the flexible circuit board;

[0006] The antenna trace includes a first trace segment, a second trace segment, a third trace segment, a fourth trace segment, and a fifth trace segment; one end of the first trace segment is connected to the second trace segment by bending one end in a first direction, the other end of the second trace segment is connected to the third trace segment by bending one end in a first direction, the other end of the third trace segment is connected to the fourth trace segment by bending one end in a first direction, and the other end of the fourth trace segment is connected to the fifth trace segment by bending one end in a first direction, so as to form a ring with a first notch; the first direction is either clockwise or counterclockwise.

[0007] Optionally, the bending angle of the second, third, fourth, and fifth wiring segments is 90°.

[0008] Optionally, the antenna traces are arranged in a rectangle with a first notch on one side.

[0009] Optionally, the length of the first trace segment is 5.8±0.1mm and the width is 1.2±0.1mm.

[0010] Optionally, the length of the second wiring segment is 1.5±0.1mm and the width is 1.0±0.1mm; the length of the third wiring segment is 15.5±0.1mm.

[0011] Optionally, the length L4 of the fourth wiring segment is 3.0±0.1mm and the width W3 is 1.0±0.1mm; the length of the fifth wiring segment is 6.2±0.1mm; and the opening width of the first notch is 3.5±0.1mm.

[0012] Optionally, the antenna trace is a monopole antenna, and a feed point is provided at the other end of the first trace segment.

[0013] This utility model discloses a laser page turner, including the aforementioned FPC antenna.

[0014] Optionally, it includes a metal housing and a plastic faceplate, with an installation window on the metal housing, the plastic faceplate being installed in the installation window, and the FPC antenna being disposed on the inner side of the plastic faceplate.

[0015] Optionally, the laser page turner also includes a button and an infrared laser head; the infrared laser head is mounted at one end of the metal casing, and a mounting window is located on the surface of the metal casing near the end of the infrared laser head; the button is mounted on the plastic casing; and the FPC antenna is positioned to avoid the button and the infrared laser head in a projection direction perpendicular to the mounting window.

[0016] The beneficial effects of the FPC antenna provided in this embodiment of the present invention are as follows: The FPC antenna of the present invention uses a flexible printed circuit (FPC) as the carrier of the antenna traces, making the FPC antenna easy to deform and easier to attach to the installation position. At the same time, one end of the first trace segment of the antenna trace is bent and connected to the second trace segment with one bend in the first direction, the other end of the second trace segment is bent and connected to the third trace segment with one bend in the first direction, the other end of the third trace segment is bent and connected to the fourth trace segment with one bend in the first direction, and the other end of the fourth trace segment is bent and connected to the fifth trace segment with one bend in the first direction to form a loop. The other end of the fifth trace segment is positioned opposite to the other end of the first trace segment to form a first notch. While ensuring sufficient trace length, it occupies a small area, is suitable for small spaces, has low space requirements for placement in laser page turners, and is easy to set up. Attached Figure Description

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the antenna wiring in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the FPC antenna according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the laser page turner according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the plastic faceplate according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the infrared laser head and circuit board of this utility model embodiment.

[0023] The labels for the attached figures are as follows:

[0024] 1. FPC antenna; 11. Flexible circuit board; 12. Antenna trace; 121. First trace segment; 1211. Feed point; 122. Second trace segment; 123. Third trace segment; 124. Fourth trace segment; 125. Fifth trace segment; 126. First notch; 2. Metal casing; 21. Mounting window; 3. Plastic casing; 4. Button; 5. Infrared laser head; 6. Circuit board. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] This utility model embodiment provides an FPC antenna 1, such as Figure 1 and Figure 2 As shown, the FPC antenna 1 includes a flexible circuit board 11 and antenna traces 12, with the antenna traces 12 disposed on the flexible circuit board 11. The antenna traces 12 include a first trace segment 121, a second trace segment 122, a third trace segment 123, a fourth trace segment 124, and a fifth trace segment 125. One end of the first trace segment 121 is bent and connected to the second trace segment 122 at one end in a first direction; the other end of the second trace segment 122 is bent and connected to the third trace segment 123 at one end in a first direction; the other end of the third trace segment 123 is bent and connected to the fourth trace segment 124 at one end in a first direction; and the other end of the fourth trace segment 124 is bent and connected to the fifth trace segment 125 at one end in a first direction, forming a ring with a first notch 126. The first direction is either clockwise or counterclockwise.

[0027] The FPC antenna 1 of this utility model uses a flexible printed circuit board (FPC) 11 as the carrier of the antenna trace 12, making the FPC antenna 1 easy to deform and easier to attach to the installation position. At the same time, one end of the first trace segment 121 of the antenna trace 12 is bent and connected to the second trace segment 122 with one end bent in the first direction. The other end of the second trace segment 122 is bent and connected to the third trace segment 123 with one end bent in the first direction. The other end of the third trace segment 123 is bent and connected to the fourth trace segment 124 with one end bent in the first direction. The other end of the fourth trace segment 124 is bent and connected to the fifth trace segment 125 with one end bent in the first direction to form a loop. The other end of the fifth trace segment 125 is positioned opposite to the other end of the first trace segment 121 to form a first notch 126. While ensuring sufficient trace length, it occupies a small area, making it suitable for small spaces. The space requirements for its placement in a laser page turner are low, and the installation difficulty is small.

[0028] Specifically, such as Figure 1 As shown, the bending angles of the second wiring segment 122, the third wiring segment 123, the fourth wiring segment 124, and the fifth wiring segment 125 are all 90°. The 90° bends allow for efficient layout of the antenna wiring 12 within a limited space. Compared to other bending angles, such as acute or obtuse angles, 90° bends allow for a more regular arrangement of the antenna wiring 12. While ensuring sufficient wiring length, this results in a smaller area occupied by the entire FPC antenna, better meeting the requirements of small-space applications, such as the layout within a laser pointer. The antenna wiring 12 is generally rectangular with a first notch 126 on one side.

[0029] The length L1 of the first trace segment 121 is 5.8±0.1mm, and the width W1 is 1.2±0.1mm. The length L2 of the second trace segment 122 is 1.5±0.1mm, and the width W2 is 1.0±0.1mm. The length L3 of the third trace segment 123 is 15.5±0.1mm, and the length L4 of the fourth trace segment 124 is 3.0±0.1mm, and the width W3 is 1.0±0.1mm. The length L5 of the fifth trace segment 125 is 6.2±0.1mm; the opening width W4 of the first notch 126 is 3.5±0.1mm. The antenna trace 12 is a monopole antenna, and a feed point 1211 is provided at the other end of the first trace segment 121. The monopole antenna has a simple structure, is easy to design and implement, and its omnidirectional radiation characteristics give it a significant advantage in certain application scenarios. Its small size makes it suitable for small devices. The feed point 1211 is electrically connected to the laser flipping circuit board 6. The power supply point 1211 is a square with a side length L6 of 1.5 ± 0.1 mm.

[0030] like Figures 3 to 5As shown, this utility model also discloses a laser page turner, including the aforementioned FPC antenna 1. Specifically, the laser page turner includes a metal shell 2 and a plastic faceplate 3. The metal shell 2 has a mounting window 21, and the plastic faceplate 3 is installed in the mounting window 21. The FPC antenna 1 is disposed on the inner side of the plastic faceplate 3. In ordinary laser page turners, the metal shell shields the antenna signal radiation, leading to unstable signal transmission and affecting the accuracy of page turning. By using a plastic faceplate 3 and placing the FPC antenna 1 on the inner side of the plastic faceplate 3, the shielding effect of the metal shell 2 on the antenna signal is effectively avoided while retaining the metallic texture of the laser page turner product. This ensures stable signal transmission and improves the reliability and usability of the laser page turner.

[0031] The plastic casing 3 offers less obstruction to the signal, allowing the antenna to better receive and transmit signals, thus enhancing the signal strength of the laser page turner. Even in complex electromagnetic environments, it ensures stable signal transmission and improves the laser page turner's anti-interference capabilities. While retaining the metallic feel of the laser page turner, it solves the signal transmission problem. The metal casing 2 not only has a good appearance but also provides structural strength, making the product more robust and durable.

[0032] Specifically, the FPC antenna 1 can be attached to the inner side of the plastic housing 3 with adhesive.

[0033] Furthermore, the laser page turner also includes a button 4 and an infrared laser head 5; the infrared laser head 5 is mounted on one end of the metal casing 2, and a mounting window 21 is located on the surface of the metal casing 2 near the end of the infrared laser head 5; the button 4 is mounted on the plastic faceplate 3. In the projection direction perpendicular to the mounting window 21, the FPC antenna 1 is positioned to avoid the button 4 and the infrared laser head 5.

[0034] The infrared laser head 5 is made of pure copper, which reflects electromagnetic waves, interfering with signal propagation, reducing radiation efficiency, disrupting impedance matching, increasing energy loss, and affecting antenna performance. Button 4 occupies most of the space on the plastic cover. By positioning the FPC antenna 1 away from button 4 and the infrared laser head 5 in the projection direction perpendicular to the mounting window 21, interference from the infrared laser head 5 to the FPC antenna 1 signal can be effectively reduced, and the space occupied by button 4 can be avoided. Furthermore, button 4 may generate electromagnetic noise when pressed, and the infrared laser head 5 also emits electromagnetic radiation when emitting laser light. If the FPC antenna 1 is close to the infrared laser head 5 and button 4, signal transmission instability can occur. By avoiding placing the FPC antenna 1 close to the infrared receiver head and button 4, the signal quality and stability of the FPC antenna 1 are improved, ensuring normal communication of the laser page turner.

[0035] The laser page turner also includes a circuit board 6, which is mounted inside the metal casing 2. The infrared laser head 5 and the button 4 are electrically connected to the circuit board 6, and the antenna trace 12 is electrically connected to the circuit board 6 through the feed point 1211. There are three buttons 4, arranged along the length of the laser page turner on the plastic casing 3.

[0036] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. An FPC antenna, characterized in that, It includes a flexible circuit board and antenna traces, wherein the antenna traces are disposed on the flexible circuit board; The antenna trace includes a first trace segment, a second trace segment, a third trace segment, a fourth trace segment, and a fifth trace segment; one end of the first trace segment is bent and connected to the second trace segment at one bend in a first direction, the other end of the second trace segment is bent and connected to the third trace segment at one bend in a first direction, the other end of the third trace segment is bent and connected to the fourth trace segment at one bend in a first direction, and the other end of the fourth trace segment is bent and connected to the fifth trace segment at one bend in a first direction, to form a ring with a first notch; the first direction is either clockwise or counterclockwise.

2. The FPC antenna according to claim 1, characterized in that, The bending angle of the second, third, fourth, and fifth wiring segments is 90°.

3. The FPC antenna according to claim 2, characterized in that, The antenna trace is generally rectangular with the first notch on one side.

4. The FPC antenna according to any one of claims 1 to 3, characterized in that, The length of the first trace segment is 5.8±0.1mm and the width is 1.2±0.1mm.

5. The FPC antenna according to claim 4, characterized in that, The second trace segment has a length of 1.5±0.1mm and a width of 1.0±0.1mm; the third trace segment has a length of 15.5±0.1mm.

6. The FPC antenna according to claim 5, characterized in that, The length L4 of the fourth wiring segment is 3.0±0.1mm, and the width W3 is 1.0±0.1mm; the length of the fifth wiring segment is 6.2±0.1mm; and the opening width of the first notch is 3.5±0.1mm.

7. The FPC antenna according to claim 6, characterized in that, The antenna trace is a monopole antenna, and a feed point is provided at the other end of the first trace segment.

8. A laser page turner, characterized in that, Includes the FPC antenna as described in any one of claims 1 to 7.

9. The laser page turner according to claim 8, characterized in that, It includes a metal casing and a plastic faceplate. The metal casing has an installation window, and the plastic faceplate is installed in the installation window. The FPC antenna is disposed on the inner side of the plastic faceplate.

10. The laser page turner according to claim 9, characterized in that, The laser page turner also includes a button and an infrared laser head; the infrared laser head is installed at one end of the metal casing, and the mounting window is on the surface of the metal casing near the end of the infrared laser head; the button is installed on the plastic faceplate; In the projection direction perpendicular to the mounting window, the FPC antenna is positioned to avoid the button and the infrared laser head.

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