Antenna and remote key

Abstract

An antenna and a fob for a vehicle, the fob comprising a middle frame, the middle frame being a conductive member, the antenna comprising a radiator configured as at least a portion of the middle frame. According to the antenna, the internal space of the remote control key is prevented from being occupied by additional antenna parts, and compared with an antenna with a radiator arranged on a circuit board, the antenna reduces the influence of the circuit board on the radiator and improves the radiation performance of the antenna.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an antenna and a remote control key. Background Art

[0002] The vehicle remote control key uses a high-frequency transmitting antenna to transmit information to the vehicle to realize remote control functions such as unlocking, locking, and one-touch window raising. The industry generally uses onboard antennas to achieve high-frequency transmission.

[0003] The performance of board-mounted antennas is limited by their design and manufacturing process. Since the size and shape of the antenna may be limited by the layout of the circuit board and the housing, this may result in poor radiation performance of the antenna. Utility Model Content

[0004] The utility model aims to provide an antenna and a remote control key to solve the problem of poor radiation performance of the antenna.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides an antenna for a remote control key of a vehicle, wherein the remote control key comprises a middle frame, and the middle frame is a conductive component, comprising:

[0007] The radiator is configured as at least a part of the middle frame.

[0008] In one implementation, the radiator includes a first section, a second section, and a third section that are connected in sequence, and the first section and the third section are arranged opposite to each other.

[0009] In one embodiment, the first section and the second section transition smoothly, and / or the second section and the third section transition smoothly.

[0010] In one embodiment, the radiator is an integrated structure.

[0011] In one embodiment, the antenna further includes a fourth segment and a fifth segment, the fourth segment is connected to an end of the first segment away from the second segment, the fifth segment is connected to an end of the third segment away from the second segment, and the end of the fourth segment away from the first segment and the end of the fifth segment away from the third segment are spaced apart.

[0012] In one embodiment, the antenna further includes a first feeding portion and a second feeding portion, wherein the first feeding portion is disposed at an end of the first segment away from the second segment, and the second feeding portion is disposed at an end of the third segment away from the second segment.

[0013] In one embodiment, the antenna further includes a circuit board, a first connecting piece and a second connecting piece, the first section, the second section and the third section enclose a receiving space, the circuit board is received in the receiving space, the first connecting piece is suitable for connecting the circuit board and the first feeding part, and the second connecting piece is suitable for connecting the circuit board and the second feeding part.

[0014] In one embodiment, a receiving groove is formed at an end of the circuit board close to the second section.

[0015] In one embodiment of the receiving groove, the antenna further includes an inductor, the inductor is connected to the circuit board, and the inductor is partially received in the receiving groove.

[0016] In a second aspect, the utility model provides a remote control key for a vehicle, comprising a middle frame and an antenna as described in any one of the various embodiments of the first aspect, at least a portion of the middle frame being a radiator of the antenna, and the middle frame being a conductive component.

[0017] The antenna of the utility model adopts a structure of at least a portion of the middle frame by setting a radiator, and uses the middle frame of the remote control key as the radiator, thereby avoiding additional antenna components occupying the internal space of the remote control key. Compared with the antenna in which the radiator is set on the circuit board, the antenna of the utility model reduces the influence of the circuit board and the outer shell of the remote control key on the radiator. The radiator directly sends signals to the outside, the radiation surface of the antenna is wider, and the radiation performance of the antenna is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a perspective view of an antenna of an embodiment;

[0020] Figure 2 FIG. 1 is a bottom view of an antenna according to an embodiment.

[0021] Description of reference numerals:

[0022] 100-antenna, 10-radiator, 11-first section, 12-second section, 13-third section, 14-fourth section, 141-first sub-section, 142-second sub-section, 15-fifth section, 151-third sub-section, 152-fourth sub-section, 20-circuit board, 21-main board, 211-first surface, 212-second surface, 22-receiving groove, 23-button, 30-first connecting piece, 40-second connecting piece, 50-battery device, 60-inductor, 61-main body, 62-connecting part, X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0025] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0026] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] For reference Figure 1 and Figure 2 The utility model provides an antenna 100 for a remote control key of a vehicle. The remote control key includes a middle frame. The antenna 100 includes a radiator 10. The radiator 10 is configured as at least a part of the middle frame.

[0028] The middle frame is a conductive component, and the material of the middle frame can be metal, conductive ceramic, conductive rubber, etc. Specifically, the metal material can be stainless steel, aluminum alloy, tungsten steel, titanium alloy, etc., without limitation.

[0029] The antenna 100 of the utility model adopts a structure of at least part of the middle frame by setting the radiator 10, and uses the middle frame of the remote control key as the radiator 10, so as to avoid the additional components of the antenna 100 occupying the internal space of the remote control key. Compared with the antenna 100 in which the radiator 10 is set on the circuit board 20, the antenna 100 of the utility model reduces the influence of the circuit board 20 and the shell of the remote control key on the radiator 10, and the radiator 10 directly sends signals to the outside, and the radiation surface of the antenna 100 is wider, which improves the radiation performance of the antenna 100. The middle frame as the radiator 10 of the antenna 100 can also improve the durability of the antenna 100. The antenna 100 of the utility model has been verified by simulation, and the radiation gain diagram of the antenna 100 is pie-shaped, with a large gain at the front and rear ends in the first direction X, a concave upper and lower surfaces, a small gain, and a smooth gain change. Compared with the onboard antenna 100, the antenna 100 of the utility model is easier to replace and iterate, and replace individual components.

[0030] For reference Figure 1 and Figure 2 In one embodiment, the radiator 10 includes a first section 11, a second section 12 and a third section 13 which are connected in sequence, and the first section 11 and the third section 13 are arranged opposite to each other.

[0031] The first section 11, the second section 12 and the third section 13 can be an integrated structure, or a split structure. Specifically, the first section 11, the second section 12 and the third section 13 can be connected by bonding, clamping, screwing, welding, etc., without limitation.

[0032] The extension direction of the first section 11 is the first direction X, the extension direction of the second section 12 is the second direction Y, and the third direction Z is perpendicular to both the first direction X and the second direction Y.

[0033] The first section 11 and the third section 13 are arranged relative to each other. When the first direction X remains unchanged, the transmission length of the signal in the radiator 10 is prolonged, which is beneficial to improving the radiation efficiency of the radiator 10 .

[0034] In one embodiment, the first section 11 and the second section 12 transition smoothly, and / or the second section 12 and the third section 13 transition smoothly.

[0035] The radiator 10 is a part of the middle frame, and the transition of the structure of the radiator 10 is rounded, which is beneficial to improving the appearance of the remote control key, avoiding the user's experience being affected by the edges and corners of the radiator 10 during use, and is beneficial to improving the user's experience.

[0036] For reference Figure 1 and Figure 2In one embodiment, the antenna 100 also includes a fourth segment 14 and a fifth segment 15, the fourth segment 14 is connected to an end of the first segment 11 away from the second segment 12, the fifth segment 15 is connected to an end of the third segment 13 away from the second segment 12, and the end of the fourth segment 14 away from the first segment 11 and the end of the fifth segment 15 away from the third segment 13 are spaced apart.

[0037] The fourth section 14 may be a straight plate extending along the first direction X. Alternatively, the fourth section 14 includes a first sub-section 141 and a second sub-section 142 connected to each other, wherein the first sub-section 141 is connected to the first section 11 and extends along the first direction X, and the second sub-section 142 extends along the second direction Y, and the connection between the first sub-section 141 and the second sub-section 142 may be smoothly transitioned.

[0038] The fifth section 15 may refer to the fourth section 14, and the fifth section 15 may be a straight plate extending along the first direction X. Alternatively, the fifth section 15 includes a third sub-section 151 and a fourth sub-section 152 connected to each other, the third sub-section 151 is connected to the third section 13 and extends along the first direction X, the fourth sub-section 152 extends along the second direction Y, and the connection between the third sub-section 151 and the fourth sub-section 152 may be a smooth transition.

[0039] The spacing distance between the fourth section 14 and the fifth section 15 is d, which satisfies: 1.5 mm ≤ d ≤ 2.5 mm. Optionally, d is 1.5 mm, 1.8 mm, 2 mm, 2.3 mm, 2.5 mm, etc., without limitation.

[0040] The radiator 10 is completely open and not closed, and the filling interval needs to be provided with insulating material. Therefore, there is a gap between the head and the tail of the radiator 10, and the fourth section 14 and the fifth section 15 are provided to reduce the gap of the radiator 10, and the material required to fill the gap can also be reduced. At the same time, the fourth section 14 and the fifth section 15 are still part of the middle frame. The fourth section 14 and the fifth section 15 are provided to improve the efficiency of the antenna 100, and at the same time reduce the material to fill the gap, so that the proportion of metal material in the material of the middle frame is increased, which is conducive to improving the appearance and use experience of the remote control key.

[0041] In one embodiment, the radiator 10 is an integrated structure, that is, the radiator 10 is an integrated structure prepared by an integrated process, and the integrated process may be casting, stamping, etc., without limitation.

[0042] The radiator 10 is an integrated structure, which is easy to produce, making the structures of the radiator 10 and the middle frame more compact, improving safety and reliability, and providing a certain degree of versatility in application.

[0043] In one implementation, the antenna 100 further includes a first feeder and a second feeder, wherein the first feeder is disposed at an end of the first section 11 away from the second section 12 , and the second feeder is disposed at an end of the third section 13 away from the second section 12 .

[0044] The first section 11 and the third section 13 are arranged opposite to each other, and thus the first power feeder and the second power feeder are arranged opposite to each other.

[0045] The first feeding part and the second feeding part are suitable for efficiently converting the electromagnetic wave signal into a radio frequency signal, and further transmitting the signal to the radio frequency circuit system for subsequent processing.

[0046] For reference Figure 1 and Figure 2 In one embodiment, the antenna 100 further includes a circuit board 20, a first connecting piece 30 and a second connecting piece 40. The first section 11, the second section 12 and the third section 13 enclose a receiving space, and the circuit board 20 is received in the receiving space. The first connecting piece 30 is suitable for connecting the circuit board 20 and the first feeding part, and the second connecting piece 40 is suitable for connecting the circuit board 20 and the second feeding part.

[0047] The circuit board 20 can be a circuit board, a PCB board, a flexible circuit board 20 , a printed circuit board 20 , etc., without limitation. The feeding part and the ground are located on the same board surface of the circuit board 20 .

[0048] The first connecting sheet 30 and the second connecting sheet 40 are metal sheets with a certain elasticity, and may be aluminum sheets, copper sheets, etc., without limitation.

[0049] The first connecting piece 30 can be connected to the circuit board 20 and the first feeding part by welding, screwing, clamping, etc., without limitation. The second connecting piece 40 is suitable for connecting the circuit board 20 and the second feeding part by welding, screwing, clamping, etc., without limitation.

[0050] The size of the first connecting piece 30 and the second connecting piece 40 in the second direction Y can be 5 mm, 6 mm, 7 mm, etc., without limitation. The size of the first connecting piece 30 and the second connecting piece 40 depends on the interval between the circuit board 20 and the radiator 10. If the interval is too long, the space utilization rate of the remote control key will be reduced. If the interval is too small, the circuit board 20 will affect the radiation of the radiator 10.

[0051] After being sent out by the chip on the circuit board 20, the signal passes through the matching circuit of the antenna 100, and then is fed to the first connecting piece 30, and is emitted from the first connecting piece 30 through the radiator 10, and returns to the signal ground on the circuit board 20 through the second connecting piece 40. The circuit board 20 is suitable for filtering external interference signals, improving the quality of the signal received by the antenna 100, and ensuring the stability and reliability of signal transmission.

[0052] The first connecting piece 30 and the second connecting piece 40 are provided to fix the relative positions of the radiator 10 and the circuit board 20 , and at the same time form a loop to ensure the radiation performance of the antenna 100 .

[0053] The antenna 100 of the present invention directly uses the first connecting piece 30 and the second connecting piece 40 to connect the feeding part and the circuit board 20. Compared with the coupling information transmission method, the information transmission efficiency using the connecting piece is higher.

[0054] For reference Figure 1 and Figure 2 In one embodiment, a receiving groove 22 is provided at the end of the circuit board 20 near the second section 12. The circuit board includes a main board 21 and components. The main board 21 includes a first surface 211 and a second surface 212 facing each other. The first surface 211 and the second surface 212 face each other in the third direction Z.

[0055] Components are arranged on the main board 21. Specifically, the components may be circuits, amplifiers, processors, electronic components, etc. The circuits, amplifiers, processors, and electronic components are arranged on the main board 21. The amplifier is suitable for amplifying the signal received by the antenna 100, improving the sensitivity of the receiver, and enabling the device to communicate effectively at a longer distance or in a more complex electromagnetic environment. The circuit is suitable for processing and analyzing the signal received by the antenna 100, improving its recognition and positioning performance, thereby meeting various application requirements.

[0056] The opening of the receiving groove 22 can be in an expanded shape, a closed shape, or a linear shape, without limitation.

[0057] The receiving groove 22 can receive a portion of the inductor 60 in the first direction X and realize the connection between the inductor 60 and the circuit board 20 .

[0058] Under the premise of ensuring the operation of the circuit board 20, providing the receiving groove 22 can improve the space utilization inside the remote control key. The receiving groove 22 of the utility model is suitable for avoiding part of the inductor 60, which is beneficial to reducing the size of the remote control key in the first direction X and improving the portability of the remote control key.

[0059] For reference Figure 1 and Figure 2 In one embodiment, the antenna 100 further includes a battery device 50, and the battery device 50 includes a battery and a fastener, and the fastener is disposed on the second surface 212 of the circuit board 20. The fastener is provided with a receiving cavity, and the battery is received in the receiving cavity. The fastener and the circuit board 20 may be connected by welding, bonding, etc., without limitation. The bottom wall of the receiving cavity may be circular, and the corresponding battery may be a button battery, which further improves the space utilization of the remote control key. Specifically, the button battery may be a cylindrical button battery, a flat sheet button battery, a wound button battery, etc., without limitation. The battery device 50 provides power to the circuit board 20 to maintain the normal operation of the device, and can prevent the remote control key from failing and causing the vehicle to lose response.

[0060] For reference Figure 1 and Figure 2 In one embodiment, the antenna 100 further includes a button 23, which may be multiple, and the multiple buttons 23 are arranged at intervals on the side of the main board 21, and the buttons 23 may also be arranged at intervals on the first surface 211 of the main board 21. The button 23 is suitable for completing various instructions of the vehicle, and the instructions may be unlocking, locking, starting and opening the door, pre-powering, opening the charging port cover, etc., without limitation.

[0061] When the button 23 is arranged on the side of the mainboard 21 , a button 23 hole is opened at the position corresponding to the side of the radiator 10 and the mainboard 21 . The shape of the button 23 hole can be circular, oval, rectangular, etc. without limitation.

[0062] Since the middle frame is set as the radiator 10, the internal space of the remote control key and the peripheral structure of the circuit board 20 can also be improved, so buttons 23 can be set on the first surface 211 and the side of the main board 21 to improve the usability of the remote control key.

[0063] For reference Figure 2 In one implementation, the antenna 100 further includes an inductor 60 , which is connected to the circuit board 20 , and a portion of the inductor 60 is received in the receiving groove 22 .

[0064] The inductor 60 is suitable for being used as a low-frequency receiving antenna in the remote control key, responsible for sensing the magnetic field strength. The inductor 60 can be a 3D inductor, specifically a stacked inductor, a thin film inductor, a winding inductor, etc., without limitation.

[0065] The inductor 60 includes a main body 61 and a connecting part 62. The main body 61 includes a magnetic core and a coil. The magnetic core is the main part of the inductor 60 and is usually made of a material with high magnetic permeability. It is used to store magnetic energy and enhance the inductance value of the inductor 60. The coil is wound with a wire. When current passes through the coil, a magnetic field is generated around the magnetic core, thereby realizing the conversion and storage of electric energy. The connecting part 62 is the connection point between the inductor 60 and the external circuit, and is used to connect the inductor 60 to the circuit. In the utility model, one end of the connecting part 62 is connected to the main body 61, and the other end of the connecting part is connected to the circuit board 20 to realize the electrical connection between the inductor 60 and the circuit board 20. The connection method between the connecting part 62 and the main body 61 and the circuit board 20 can be bonding, welding, etc., without limitation.

[0066] The induced current is transmitted to the main body of the circuit board 20 through the conductive medium. The inductor 60 can reduce the influence of the circuit structure on the circuit board 20 on the magnetic induction capability and maximize the distance between the inductor and the circuit.

[0067] The antenna 100 of the present invention has been verified through simulation. The radiation gain diagram of the antenna 100 is in a pie shape. The front end and the rear end in the first direction X have a larger gain. The upper and lower surfaces are concave, the gain is smaller, and the gain changes smoothly.

[0068] The utility model provides a remote control key for a vehicle, comprising a middle frame and an antenna 100 according to any one of the aforementioned various embodiments, wherein at least a part of the middle frame is a radiator 10 of the antenna 100 .

[0069] Optionally, the remote control key further includes a key cap, which is arranged corresponding to the button 23 and covers the button 23. The key cap can be made of metal, which is the same as the radiator 10, which is conducive to achieving the uniformity of the material of the remote control key and improving the user's experience.

[0070] In one embodiment, the remote control key also includes a first end cover and a second end cover arranged opposite to each other in a third direction Z, and the two ends of the middle frame in the third direction Z are respectively connected to the first end cover and the second end cover, and the connection method between the middle frame and the first end cover and the second end cover can be bonding, welding, clamping, screwing, etc., without limitation.

[0071] The material of the first end cap and the second end cap can be metal, high-strength plastic, etc., without limitation. Optionally, the material of the first end cap and the second end cap is the same as that of the middle frame, which is conducive to improving the user experience. The shape of the first end cap and the second end cap can be oval, circular, etc., and is set corresponding to the shape of the middle frame.

[0072] When the button 23 is disposed on the first surface 211 of the main board 21 , a button 23 hole corresponding to the button 23 is disposed on the first end cover corresponding to the first surface 211 .

[0073] In one embodiment, the remote control key further includes an insulating member, which is disposed on the end face of the button 23 close to the radiator 10 to prevent the button 23 from being directly connected to the middle frame during use, causing the radiator 10 to fail to send out signals, resulting in the vehicle lacking response. The insulating member can be plastic, rubber, etc., without limitation. Specifically, the insulating member can be PE (polyethylene), PVC (polyvinyl chloride), PET (polyethylene terephthalate), PA (nylon) and PC (polycarbonate), etc.

[0074] At least part of the middle frame of the remote control key of the utility model serves as the radiator 10 of the antenna 100, which avoids the additional components of the antenna 100 occupying the internal space of the remote control key. Compared with the antenna 100 in which the radiator 10 is arranged on the circuit board 20, the antenna 100 of the utility model reduces the influence of the circuit board 20 on the radiator 10, and the radiation surface of the antenna 100 is wider, thereby improving the radiation performance of the antenna 100. The remote control key of the utility model retains excellent radiation performance while greatly improving the user experience.

[0075] In one embodiment, the remote control key also includes a connecting portion, which is suitable for filling the gap between one end of the first section 11 away from the second section 12 and one end of the third section 13 away from the second section 12, or is suitable for filling the gap between one end of the fourth section 14 away from the first section 11 and one end of the fifth section 15 away from the second section 12, and the connecting portion is an insulating medium.

[0076] The material of the connection part can be plastic, rubber, etc., without limitation. Specifically, the connection part can be PE (polyethylene), PVC (polyvinyl chloride), PA (nylon) and PC (polycarbonate), etc. The material of the connection part can be the same as the material of the insulating part. The connection part is suitable for strengthening the structural strength of the middle frame of the remote control key, while preventing the partition of the middle frame from affecting the user's experience. The connection part can prevent the direct connection of the radiator 10 from causing the antenna 100 and the remote control key to fail, thereby causing the vehicle to lack response.

[0077] The utility model provides a vehicle, comprising a vehicle body and a remote control key as described in any one of the above various embodiments. The vehicle can be a two-wheeled vehicle, a four-wheeled vehicle, etc., without limitation.

[0078] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An antenna for a remote control key of a vehicle, the remote control key comprising a middle frame, the middle frame being a conductive member, characterized in that: include: The radiator is configured as at least a part of the middle frame, and the radiator includes a first section, a second section and a third section connected in sequence, and the first section and the third section are arranged opposite to each other.

2. The antenna according to claim 1, characterized in that The first section and the second section transition smoothly, and / or the second section and the third section transition smoothly.

3. The antenna according to claim 1, characterized in that The radiator is an integrated structure.

4. The antenna according to claim 1, characterized in that: The antenna also includes a fourth segment and a fifth segment, the fourth segment is connected to an end of the first segment away from the second segment, the fifth segment is connected to an end of the third segment away from the second segment, and the end of the fourth segment away from the first segment and the end of the fifth segment away from the third segment are spaced apart.

5. The antenna according to claim 1, characterized in that The antenna further includes a first feeding portion and a second feeding portion. The first feeding portion is disposed at an end of the first segment away from the second segment, and the second feeding portion is disposed at an end of the third segment away from the second segment.

6. The antenna according to claim 5, characterized in that The antenna also includes a circuit board, a first connecting piece and a second connecting piece. The first section, the second section and the third section enclose a receiving space. The circuit board is received in the receiving space. The first connecting piece is suitable for connecting the circuit board and the first feeding part, and the second connecting piece is suitable for connecting the circuit board and the second feeding part.

7. The antenna according to claim 6, characterized in that The circuit board is provided with a receiving groove at the end portion close to the second section.

8. The antenna according to claim 7, characterized in that: The antenna further includes an inductor, which is connected to the circuit board and partially received in the receiving groove.

9. A remote control key for a vehicle, characterized in that: The invention comprises a middle frame and the antenna according to any one of claims 1 to 8, wherein at least a part of the middle frame is a radiator of the antenna, and the middle frame is a conductive component.

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