Bluetooth-based passive vehicle speed sensor

Abstract

The utility model discloses a passive vehicle speed sensor based on Bluetooth, which comprises a sensor body and a USB butt joint port, the USB butt joint port is embedded in one side of the sensor body, a USB connector is inserted in the USB butt joint port, a Bluetooth module is installed on the USB connector, a butt joint sealing assembly is arranged on one side of the USB butt joint port on the sensor body, and the Bluetooth module is installed on the butt joint sealing assembly. A protective shell is arranged on the butt joint sealing assembly. According to the utility model, the USB docking port, the USB connector and the Bluetooth module are arranged, and the Bluetooth module is inserted into the USB docking port through the USB connector to realize USB docking and separation, so that the Bluetooth module can be conveniently and independently detached to be replaced and upgraded; the butt joint sealing assembly clamps the protective shell on the sensor body and achieves synchronous sealing at the same time, the joint of the protective shell and the sensor body is sealed to prevent water and dust from entering and affecting butt joint of the USB connector and the USB butt joint port, and the effect of protecting the positions of the USB connector and the USB butt joint port is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle speed sensor technology, and in particular to a Bluetooth-based passive vehicle speed sensor. Background Technology

[0002] A vehicle speed sensor is a sensor that measures the speed of a vehicle. A passive vehicle speed sensor is a type of vehicle speed sensor that can work without relying on an external power source. It generates an electrical signal through its own mechanical movement. There are two types of passive vehicle speed sensors: magnetic induction type and Hall effect type. The two types of sensors have different working principles, but both measure vehicle speed by generating an electrical signal themselves.

[0003] Due to the development of current technology, Bluetooth has been added to passive sensors to transmit wireless signals. However, since the Bluetooth is now built into the passive sensor, it is difficult to remove it independently for replacement and upgrade, which affects the use of Bluetooth passive vehicle speed sensors.

[0004] Therefore, how to provide a Bluetooth-based passive vehicle speed sensor is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to propose a Bluetooth-based passive vehicle speed sensor, which solves the problem of replacing and upgrading existing passive vehicle speed sensors that have Bluetooth built-in.

[0006] According to an embodiment of the present invention, a Bluetooth-based passive vehicle speed sensor includes a sensor body and a USB interface. The USB interface is embedded in one side of the sensor body, and a USB connector is plugged into the USB interface. A Bluetooth module is installed on the USB connector.

[0007] The sensor body has a mating sealing component on one side of the USB interface, and a protective shell is provided on the mating sealing component.

[0008] The mating sealing assembly includes a sealing ring and a fixing ring. The fixing ring is fixed to the surface of the sensor body, the sealing ring is sleeved on the side of the fixing ring, one side of the protective shell is attached to the surface of the sealing ring, and a snap-fit ​​assembly is provided on the fixing ring.

[0009] The snap-fit ​​assembly includes a positioning snap-fit ​​strip and a movable snap-fit ​​strip. The positioning snap-fit ​​strip is fixed to the side of the fixed ring and is located on the side of the sealing ring away from the sensor body. The side of the positioning snap-fit ​​strip near the sealing ring has an inclined surface with positioning teeth. The movable snap-fit ​​strip is fixed to the inner wall of the protective shell and is located between the positioning snap-fit ​​strip and the sealing ring. The movable snap-fit ​​strip has movable teeth that mesh with the positioning teeth.

[0010] The two sides of the sealing ring are provided with sealing protrusions, one side of the sensor body and one side of the protective shell are provided with clamping grooves corresponding to the positions of the sealing protrusions, the sealing protrusions are movably clamped in the clamping grooves, and the outer side of the sealing ring is provided with an outer sealing strip corresponding to the connection position of the protective shell and the sensor body.

[0011] The inner wall of the protective shell is provided with a pressing assembly, the pressing assembly comprises a rotating piece and a spring piece, the rotating piece is arranged on the protective shell, one end of the spring piece is arranged on the rotating piece, and the other end of the spring piece is provided with a pressing plate which is attached to the surface of the Bluetooth module.

[0012] The rotating piece comprises a limiting seat and a rotating block, the limiting seat is fixed on the inner wall of the protective shell, and the rotating block is rotatably connected in the limiting seat, and one end of the spring piece is fixed on the rotating block.

[0013] The beneficial effects of the present application are as follows:

[0014] By setting the USB interface, the USB connector and the Bluetooth module, the Bluetooth module is inserted on the USB interface through the USB connector to realize USB connection and separation, and the Bluetooth module is conveniently and independently disassembled for replacement and upgrading.

[0015] By setting the protective shell and the docking sealing assembly, the docking sealing assembly can realize synchronous sealing while clamping the protective shell on the sensor body, and the connection position of the protective shell and the sensor body is sealed to avoid the entry of water and dust and affect the docking of the USB connector and the USB interface.

[0016] By setting the pressing assembly, the pressing assembly is used to resist the Bluetooth module through the elastic force, so that the Bluetooth module is stably inserted on the USB interface through the USB connector and is not easy to loosen, thereby avoiding the loosening of the USB connector and the USB interface during the driving process of the vehicle and affecting the operation of the Bluetooth module. DETAILED DESCRIPTION

[0017] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0018] Figure 1 A three-dimensional flow chart of the docking sealing assembly, the pressing assembly, the Bluetooth module and the sensor body connection state in the passive vehicle speed sensor based on Bluetooth is provided.

[0019] Figure 2 A sectional three-dimensional flow chart of the position of the pressing assembly and the docking sealing assembly in the passive vehicle speed sensor based on Bluetooth is provided.

[0020] Figure 3 The utility model provides a whole stereogram of passive vehicle speed sensor based on bluetooth.

[0021] Figure 4 The utility model provides a sectional stereogram of butt joint sealing assembly position in passive vehicle speed sensor based on bluetooth.

[0022] Figure 5 The utility model provides a sectional stereogram of butt joint sealing assembly position in passive vehicle speed sensor based on bluetooth.

[0023] Fig. 1, sensor body; 2, USB interface; 3, USB connector; 4, bluetooth module; 5, butt joint sealing assembly; 6, protective shell; 7, sealing ring; 8, fixed ring; 9, clamping assembly; 10, positioning clamping strip; 11, movable clamping strip; 12, inclined plane; 13, positioning tooth; 14, movable tooth; 15, sealing convex strip; 16, clamping groove; 17, outer sealing strip; 18, extrusion assembly; 19, rotating piece; 20, spring piece; 21, extrusion plate; 22, limiting seat; 23, rotating block. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in connection with the drawings. These drawings are all simplified schematic diagrams, only the basic structure of the utility model is schematically shown, therefore it only shows the structure related to the utility model.

[0025] Example 1

[0026] Reference Figure 1 And Figure 2 , including sensor body 1 and USB interface 2, the USB interface 2 is embedded in one side of sensor body 1, the USB connector 3 is inserted on the USB interface 2, the bluetooth module 4 is installed on the USB connector 3, the USB connector 3 is inserted on the USB interface 2, so that the speed signal generated by sensor body 1 is transmitted to the bluetooth module 4 through the USB interface 2 and the USB connector 3, when the bluetooth module 4 is removed, it directly moves away from the USB interface 2, so that the USB connector 3 can be separated from the USB interface 2, and then the purpose of taking off the bluetooth module 4 independently is realized, which is convenient for replacing and upgrading the bluetooth module 4, and greatly improves the practicability.

[0027] The bluetooth module 4 is connected with bluetooth speed receiver (not shown in the drawing) through wireless signal, the bluetooth speed receiver is a kind of equipment for receiving bluetooth module 4 signal, and the bluetooth speed receiver is connected with vehicle central control system (it is prior art, not shown in the drawing), when bluetooth module 4 sends signal, bluetooth speed receiver receives signal and carries out transcoding and display through vehicle central control system.

[0028] Example 2

[0029] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5The sensor body 1 is provided with a docking sealing assembly 5 on one side of the USB docking interface 2, which is used for docking and sealing between the protective shell 6 and the sensor body 1. The docking sealing assembly 5 is provided with the protective shell 6, which is used for protecting the Bluetooth module 4, the USB docking interface 2 and the USB connector 3 from being damaged during movement. The docking sealing assembly 5 includes a sealing ring 7 and a fixing ring 8. The fixing ring 8 is fixed to the surface of the sensor body 1, and at this time, the fixing ring 8 surrounds the USB docking interface 2. The sealing ring 7 is sleeved on the side surface of the fixing ring 8. One side of the protective shell 6 is attached to the surface of the sealing ring 7. The two side surfaces of the sealing ring 7 are provided with sealing protrusions 15. The one side of the sensor body 1 and the one side of the protective shell 6 are provided with clamping grooves 16 corresponding to the positions of the sealing protrusions 15. The sealing protrusions 15 are movably clamped in the clamping grooves 16. The protruding design of the sealing protrusions 15 further increases the contact area of the protective shell 6, the sensor body 1 and the sealing ring 7, increases a protective layer, and further improves the sealing performance. The outer side of the sealing ring 7 is provided with an outer sealing strip 17 corresponding to the connection position of the protective shell 6 and the sensor body 1, which directly blocks the outer side connection gap of the protective shell 6, the sensor body 1 and the sealing ring 7, avoids water and dust from directly entering the gap at this position, and further improves the sealing performance at this position. The fixing ring 8 is provided with a clamping assembly 9. The number of the clamping assembly 9 is four. The four clamping assemblies 9 are arranged in an annular array around the array center of the fixing ring 8. The clamping assembly 9 includes a positioning clamping strip 10 and a movable clamping strip 11. The positioning clamping strip 10 is fixed to the side surface of the fixing ring 8 and located on the side of the sealing ring 7 away from the sensor body 1. The side of the positioning clamping strip 10 close to the sealing ring 7 is provided with an inclined surface 12. The inclined surface 12 is arranged to enable the movable clamping strip 11 to move from a large gap between the positioning clamping strip 10 and the sealing ring 7 to a small gap between the positioning clamping strip 10 and the sealing ring 7. The inclined surface 12 is provided with a positioning tooth 13. The movable clamping strip 11 is fixed to the inner wall of the protective shell 6 and located between the positioning clamping strip 10 and the sealing ring 7. The movable clamping strip 11 is provided with a movable tooth 14. The movable tooth 14 and the positioning tooth 13 are engaged with each other, which can stabilize the protective shell 6. It should be noted that the sealing ring 7 has strong elasticity. During operation, the sealing ring 7 is sleeved on the outer side of the fixing ring 8, and one side of the sealing ring 7 is attached to the surface of the sensor body 1. Then, the protective shell 6 is sleeved on the fixing ring 8, and one end of the protective shell 6 and one side of the movable clamping strip 11 are attached to the sealing ring 7. Subsequently, the protective shell 6 is rotated to drive the movable clamping strip 11 to move between the positioning clamping strip 10 and the sealing ring 7. Under the condition that the protective shell 6 is continuously rotated, the movable clamping strip 11 is engaged with the positioning tooth 13 through the movable tooth 14. When the protective shell 6 is continuously rotated, the positioning tooth 13 presses the movable tooth 14 downward, so that the movable tooth 14 continuously moves to the small gap between the positioning clamping strip 10 and the sealing ring 7. At this time, the movable tooth 14 is pressed in the direction of the sealing ring 7 and presses the sealing ring 7.Then the sealing ring 7 will give a spring to extrude the movable teeth 14, and then through the spring force of the sealing ring 7 to make the movable teeth 14 stable occlusion on the positioning teeth 13, so as to achieve the purpose of clamping, while clamping, the sealing ring 7 is tightly combined with the surface of the protective shell 6 and the sensor body 1 through its own spring force, improve the sealing of this position, through the protective shell 6 to protect the Bluetooth module 4, USB interface 2 and USB connector 3, avoid being collided, also through the sealing ring 7 to avoid water and dust into the protective shell 6 to affect the normal operation of the Bluetooth module 4, USB interface 2 and USB connector 3.

[0030] Embodiment 3

[0031] Reference Figure 1 And Figure 2 , the inner wall of the protective shell 6 is provided with an extrusion assembly 18, which applies a force to the Bluetooth module 4 in the protective shell 6 to make the Bluetooth module 4 stable through the USB connector 3 and the USB interface 2. The extrusion assembly 18 includes a rotating part 19 and a spring part 20. The rotating part 19 is arranged on the protective shell 6, one end of the spring part 20 is arranged on the rotating part 19, and the other end of the spring part 20 is provided with an extrusion plate 21 which is attached to the surface of the Bluetooth module 4. The rotating part 19 includes a limiting seat 22 and a rotating block 23. The limiting seat 22 is fixed on the inner wall of the protective shell 6, and the rotating block 23 is rotatably connected inside the limiting seat 22. One end of the spring part 20 is fixed on the rotating block 23. When operating, the protective shell 6 will rotate on the rotating block 23 through the limiting seat 22 when the protective shell 6 rotates, so that the rotating block 23 does not rotate with the protective shell 6. Moreover, during the installation process of the protective shell 6, the extrusion plate 21 is attached to the Bluetooth module 4, and then the spring part 20 provides a spring force to the extrusion plate 21 to extrude the Bluetooth module 4, so as to improve the stability of the Bluetooth module 4 and avoid the Bluetooth module 4 from being separated from the sensor body 1 during movement.

[0032] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A passive vehicle speed sensor based on Bluetooth, characterized in that, Including sensor body (1) and USB interface (2), the USB interface (2) is embedded in one side of sensor body (1), the USB interface (2) is inserted with USB connector (3), and the USB connector (3) is installed with Bluetooth module (4); The side of the sensor body (1) on the USB interface (2) is provided with a docking sealing assembly (5), the docking sealing assembly (5) is provided with a protective shell (6), the docking sealing assembly (5) comprises a sealing ring (7) and a fixing ring (8), the fixing ring (8) is fixed on the surface of the sensor body (1), the sealing ring (7) is sleeved on the side of the fixing ring (8), one side of the protective shell (6) is attached to the surface of the sealing ring (7), and the fixing ring (8) is provided with a clamping assembly (9).

2. The Bluetooth-based passive vehicle speed sensor of claim 1, wherein, The clamping assembly (9) comprises a positioning clamping strip (10) and a movable clamping strip (11), the positioning clamping strip (10) is fixed on the side of the fixing ring (8), and the positioning clamping strip (10) is located on the side of the sealing ring (7) away from the sensor body (1), the side of the positioning clamping strip (10) close to the sealing ring (7) is provided with an inclined surface (12), the inclined surface (12) is provided with a positioning tooth (13), and the movable clamping strip (11) is fixed on the inner wall of the protective shell (6) and located between the positioning clamping strip (10) and the sealing ring (7), the movable clamping strip (11) is provided with a movable tooth (14), and the movable tooth (14) is engaged with the positioning tooth (13).

3. The Bluetooth-based passive vehicle speed sensor of claim 2, wherein, Both sides of the sealing ring (7) are provided with sealing protrusions (15), the side of the sensor body (1) and the side of the protective shell (6) are provided with clamping grooves (16) corresponding to the positions of the sealing protrusions (15), the sealing protrusions (15) are clamped in the clamping grooves (16), and the outer side of the sealing ring (7) is provided with an outer sealing strip (17) corresponding to the connection between the protective shell (6) and the sensor body (1).

4. The Bluetooth-based passive vehicle speed sensor of claim 3, wherein, The inner wall of the protective shell (6) is provided with an extrusion assembly (18), the extrusion assembly (18) comprises a rotating piece (19) and a spring piece (20), the rotating piece (19) is arranged on the protective shell (6), one end of the spring piece (20) is arranged on the rotating piece (19), and the other end of the spring piece (20) is provided with an extrusion plate (21) attached to the surface of the Bluetooth module (4).

5. The Bluetooth-based passive vehicle speed sensor of claim 4, wherein, The rotating piece (19) comprises a limiting seat (22) and a rotating block (23), the limiting seat (22) is fixed on the inner wall of the protective shell (6), and the rotating block (23) is rotatably connected in the limiting seat (22), and one end of the spring piece (20) is fixed on the rotating block (23).

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