A multi-functional vehicle-mounted bluetooth transmitter
By introducing auxiliary bonding components, power supply mechanisms, and signal amplification components into the vehicle-mounted Bluetooth transmitter, the problems of poor compatibility and weak signal of existing vehicle-mounted Bluetooth transmitters are solved, achieving stable power supply, strong signal, and multi-functional operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN KAIWEIDI TECHNOLOGY CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-05-29
AI Technical Summary
Existing vehicle-mounted Bluetooth transmitters suffer from poor compatibility, weak signals, limited coverage, susceptibility to interference, inconvenient operation, limited functionality, and difficulty in adapting to different devices.
The design incorporates an auxiliary bonding component, a power supply mechanism, a Bluetooth signal transmission amplification component, and a wired connection mechanism, including a cigarette lighter interface bonding ring, anti-slip rubber blocks, a signal amplifier, and multiple wired connection interfaces to ensure stable power supply and signal transmission, enhance Bluetooth signal coverage, and provide multiple connection methods.
It achieves a stable fit with the car cigarette lighter, enhances Bluetooth signal strength and coverage, reduces operational difficulty, expands the device compatibility range, and improves the stability and convenience of audio transmission.
Smart Images

Figure CN224305761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle electronic equipment technology, specifically a multifunctional vehicle Bluetooth transmitter. Background Technology
[0002] With the development of intelligent vehicles, the demand for in-car audio playback is becoming increasingly diverse, and Bluetooth transmitters have become a common tool for connecting mobile devices and car audio systems. However, existing in-car Bluetooth transmitters have the following shortcomings:
[0003] Poor compatibility; the fit with the car cigarette lighter interface is not tight, easily loosening and causing poor contact, affecting power supply and signal transmission; weak signal; small Bluetooth signal coverage and weak wall (vehicle) penetration ability; easily interfered with, causing audio playback to stutter; limited functionality; only supports Bluetooth or limited wired connections, making it difficult to adapt to different devices; inconvenient to operate; slippery grip during installation and removal, increasing the difficulty of use for users.
[0004] Therefore, there is a need for a vehicle Bluetooth transmitter that is stable, has a strong signal, is feature-rich, and easy to operate, to meet diverse in-vehicle audio needs. Utility Model Content
[0005] (a) Technical problems to be solved.
[0006] To address the shortcomings of existing technologies, this invention provides a multifunctional vehicle-mounted Bluetooth transmitter, solving the problems mentioned in the background section.
[0007] (ii) Technical solution.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional vehicle-mounted Bluetooth transmitter, comprising a transmitter body, wherein the transmitter body is equipped with an auxiliary bonding component, a power supply mechanism, a Bluetooth signal transmission amplification component, and a wired connection mechanism;
[0009] The transmitter body includes a main body, and anti-slip grip blocks are provided at both ends of the main body;
[0010] The auxiliary bonding component includes a cigarette lighter interface bonding ring sleeved on the outer side of the rear end of the main body. Multiple air ducts are opened at equal angles around the cigarette lighter interface bonding ring, and multiple anti-slip rubber blocks are opened at equal angles around the rear end of the cigarette lighter interface bonding ring.
[0011] The power supply mechanism includes a power supply connector located at the rear end of the main body, with contact springs at both ends of the power supply connector and contact points at the rear end of the power supply connector;
[0012] The Bluetooth signal transmission amplification component includes a signal amplifier located at the top of the main body. The top of the signal amplifier has two antenna placement slots symmetrically arranged front and back. A signal amplification antenna is rotatably installed in the antenna placement slots. A control switch and a signal status indicator are provided at the front end of the signal amplifier.
[0013] The wired connection mechanism includes a first wired connection interface, a second wired connection interface, and an interface connection status indicator light located at the front end of the main body.
[0014] As a further improvement of this utility model: the cigarette lighter interface fitting ring is adapted to the opening of the car cigarette lighter interface, and multiple air vents and multiple anti-slip rubber blocks are arranged in an alternating pattern. The anti-slip rubber blocks increase the friction, and the air vents ensure heat dissipation of the cigarette lighter interface, thus achieving a stable fit.
[0015] As a further improvement of this utility model: the power supply connector, contact spring, and contact point are compatible with the car cigarette lighter, and can be connected to the car cigarette lighter to draw power through the power supply connector. The contact spring makes elastic contact and the contact point conducts electricity to provide power to the transmitter.
[0016] As a further improvement of this utility model: the two signal amplification antennas are arranged in a centrally symmetrical manner, and the signal amplification antennas can be stored in the antenna placement slot. The signal amplifier is controlled by a control switch, and the signal status indicator shows the signal amplification status.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. In this utility model, the design of the cigarette lighter interface fitting ring, anti-slip rubber block and air vent achieves a stable fit with the vehicle cigarette lighter interface, which not only ensures the stability of power supply and signal transmission, but also avoids the problem of poor heat dissipation of the cigarette lighter interface caused by the fit. In addition, the signal amplifier and rotatable signal amplification antenna enhance the transmission strength and coverage of Bluetooth signal, effectively reducing the problem of audio transmission stuttering caused by vehicle space or environmental interference.
[0019] 2. In this utility model, by setting a first wired connection interface and a second wired connection interface, multiple audio input methods are provided, which are compatible with older devices that do not have Bluetooth function and expand the scope of use of the device. In addition, by setting anti-slip grip blocks at both ends of the main body, the grip friction is increased, making the installation and disassembly operations more convenient and reducing the difficulty of operation. Attached Figure Description
[0020] Figure 1 This is a perspective view of the entire utility model;
[0021] Figure 2 The transmitter main body structure of this utility model is three-dimensional. Figure 1 ;
[0022] Figure 3 The transmitter main body structure of this utility model is three-dimensional. Figure 2 ;
[0023] Figure 4 This is a perspective view of the power supply mechanism of this utility model.
[0024] In the diagram: 1. Transmitter body; 2. Auxiliary bonding component; 3. Power supply mechanism; 4. Bluetooth signal transmission amplification component; 5. Wired connection mechanism; 11. Main body; 12. Anti-slip grip block; 21. Cigarette lighter interface bonding ring; 22. Air vent; 23. Anti-slip rubber block; 31. Power connector; 32. Contact spring; 33. Contact point; 41. Signal amplifier; 42. Antenna placement slot; 43. Signal amplification antenna; 44. Control switch; 45. Signal status indicator light; 51. First wired connection interface; 52. Second wired connection interface; 53. Interface connection status indicator light. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] Please see Figures 1-4In this embodiment of the utility model, a multifunctional vehicle-mounted Bluetooth transmitter includes a transmitter body 1, which is equipped with an auxiliary bonding component 2, a power supply mechanism 3, a Bluetooth signal transmission amplification component 4, and a wired connection mechanism 5.
[0029] The main body 11 of the transmitter body 1 serves as the mounting carrier for various functional components. The anti-slip grip blocks 12 at both ends are made of rubber and have anti-slip grooves on their surfaces. When installing and removing the transmitter, the user can effectively prevent slipping by holding the anti-slip grip blocks 12, thus improving the ease of operation.
[0030] The cigarette lighter interface fitting ring 21 of the auxiliary fitting component 2 is tightly fitted onto the outer rear end of the main body 11. Its outer diameter is adapted to the opening of the cigarette lighter interface. Multiple air vents 22 are evenly distributed around the cigarette lighter interface fitting ring 21. When the fitting ring is fitted with the cigarette lighter interface, the air vents 22 can maintain airflow and prevent the cigarette lighter interface from being damaged due to the inability to dissipate heat generated during long-term use. Anti-slip rubber blocks 23 are set at equal angles around the rear end of the cigarette lighter interface fitting ring 21 and are distributed in an alternating pattern with the air vents 22. Through the close contact between the anti-slip rubber blocks 23 and the inner wall of the cigarette lighter interface, the friction is increased, so that the transmitter can be stably fixed in the cigarette lighter interface and is not easy to loosen due to vehicle vibration.
[0031] The power supply connector 31 of the power supply mechanism 3 is fixedly connected to the rear end of the main body 11. Its shape and size match the internal structure of the car cigarette lighter. The contact springs 32 at both ends of the power supply connector 31 have good elasticity. When the power supply connector 31 is inserted into the cigarette lighter interface, the contact springs 32 will make close contact with the conductive parts inside the cigarette lighter to ensure the stability of the circuit connection. The contact point 33 at the rear end of the power supply connector 31 further enhances the conductivity and provides a stable power supply for the entire transmitter.
[0032] The signal amplifier 41 of the Bluetooth signal transmission amplification component 4 is installed at the top of the main body 11 to enhance the transmission strength of the Bluetooth signal. The two antenna placement slots 42 at the top of the signal amplifier 41 are symmetrically arranged. The signal amplification antenna 43 is rotatably mounted in the antenna placement slot 42 via a pivot and can be unfolded or retracted as needed. When unfolded, the two signal amplification antennas 43 are centrally symmetrical, which can effectively expand the signal coverage. When not in use, the signal amplification antenna 43 can be retracted into the antenna placement slot 42 to reduce space occupation. The control switch 44 is located at the front of the signal amplifier 41 to control the signal amplifier 41 to turn on and off. The signal status indicator 45 displays the working status of the signal amplification in real time, so that users can understand the working status of the device.
[0033] The first wired connection interface 51 and the second wired connection interface 52 of the wired connection mechanism 5 are arranged side by side at the front of the main body 11, and are used to connect different types of audio devices, such as mobile phones, MP3 players, USB flash drives, etc. The interface connection status indicator light 53 is located between the two interfaces. When a device is connected to the interface, the indicator light will light up to prompt the user that the connection is successful and ensure that the audio signal can be transmitted normally.
[0034] The working principle of this utility model is as follows: When in use, the user holds the anti-slip grip block 12 and inserts the power connector 31 into the car cigarette lighter interface. The cigarette lighter interface fitting ring 21 is tightly fitted to the cigarette lighter interface through the anti-slip rubber block 23. At the same time, the air vent 22 ensures heat dissipation of the cigarette lighter interface. The power connector 31 obtains power from the cigarette lighter through the contact spring 32 and contact contact 33 to power the entire transmitter. The user can choose Bluetooth wireless connection or wired connection for audio transmission. If Bluetooth connection is selected, the Bluetooth function of the mobile device is turned on, and the transmitter is searched for and connected. At the same time, the control switch 44 can be pressed as needed to deploy the signal amplification antenna 43 to enhance the transmission distance and stability of the Bluetooth signal. The signal status indicator 45 will display the current signal status. If wired connection is selected, the audio device is connected to the first wired connection interface 51 or the second wired connection interface 52 through the corresponding cable. The interface connection status indicator 53 will display the connection status. Whether Bluetooth connection or wired connection is selected, the audio signal will eventually be played out through the car audio system, realizing multi-functional car audio transmission.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A multifunctional vehicle-mounted Bluetooth transmitter, comprising a transmitter body (1), wherein the transmitter body (1) is equipped with an auxiliary bonding component (2), a power supply mechanism (3), a Bluetooth signal transmission amplification component (4), and a wired connection mechanism (5). Its features are: The transmitter body (1) includes a main body (11), and anti-slip grip blocks (12) are provided at both ends of the main body (11). The auxiliary bonding component (2) includes a cigarette lighter interface bonding ring (21) sleeved on the outer side of the rear end of the main body (11). The cigarette lighter interface bonding ring (21) has multiple air ducts (22) at equal angles around its periphery, and multiple anti-slip rubber blocks (23) at equal angles around its rear end. The power supply mechanism (3) includes a power supply connector (31) located at the rear end of the main body (11). The power supply connector (31) has contact springs (32) at both ends and contact contacts (33) at the rear end. The Bluetooth signal transmission amplification component (4) includes a signal amplifier (41) located at the top of the main body (11). The top of the signal amplifier (41) has two antenna placement slots (42) symmetrically arranged. A signal amplification antenna (43) is rotatably arranged in the antenna placement slots (42). A control switch (44) and a signal status indicator (45) are provided at the front end of the signal amplifier (41). The wired connection mechanism (5) includes a first wired connection interface (51), a second wired connection interface (52), and an interface connection status indicator (53) located at the front end of the main body (11).
2. The multifunctional vehicle-mounted Bluetooth transmitter according to claim 1, characterized in that: The cigarette lighter interface fitting ring (21) is adapted to the opening of the car cigarette lighter interface, and the multiple air guides (22) and multiple anti-slip rubber blocks (23) are arranged in an alternating pattern.
3. A multifunctional vehicle-mounted Bluetooth transmitter according to claim 1, characterized in that: The power connector (31), contact spring (32), and contact point (33) are matched with the car cigarette lighter.
4. A multifunctional vehicle-mounted Bluetooth transmitter according to claim 1, characterized in that: The two signal amplification antennas (43) are arranged in a centrally symmetrical manner.
5. A multifunctional vehicle-mounted Bluetooth transmitter according to claim 1, characterized in that: The first wired connection interface (51) and the second wired connection interface (52) are adapted to different types of wired devices.
6. A multifunctional vehicle-mounted Bluetooth transmitter according to claim 1, characterized in that: The two anti-slip grip blocks (12) are provided with multiple anti-slip grooves at one end, and the anti-slip grip blocks (12) are made of rubber.