Automobile Bluetooth tire pressure monitoring module

Abstract

The utility model relates to the technical field of tire pressure monitoring technology, in particular to an automobile Bluetooth tire pressure monitoring module, which is characterized in that a tire air tap is communicated with a connecting shell, the outer side of the connecting shell is communicated with a breather pipe, and the outer side of the breather pipe is provided with an outer pipe; an annular sealing piece matched with an inner cavity of the outer pipe is slidably installed in the inner cavity of the outer pipe, the sectional area of the annular sealing piece is larger than that of the sealing plug, and an annular pressure sensor is arranged on one side of the outer pipe. The sealing device has the beneficial effects that the outer pipe is arranged on the outer side of the breather pipe, the inner pipe is fixed in the inner cavity of the outer pipe, and the inner cavities of the breather pipe, the inner pipe and the outer pipe are sequentially communicated; and the pressure applied to the annular pressure sensor by the annular sealing element is greatly changed, so that a pressure change signal can be timely transmitted to a vehicle-mounted system by the Bluetooth module for early warning, and the safety performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tire pressure monitoring, in particular to a kind of automobile bluetooth tire pressure monitoring module. BACKGROUND

[0002] Tire pressure is too high in automobile driving, it can reduce the contact area of tire and ground, and at this time, the pressure that tire bears is relatively improved, and the tire grip will be affected, and the tire pressure monitoring system (TPMS) is generally applied on automobile to monitor the pressure of automobile tire.

[0003] In prior art, the utility model discloses a kind of bluetooth tire pressure monitoring device, the tire pressure of automobile tire is monitored in real time by pressure sensor.

[0004] But at present, the monitoring precision of existing tire pressure monitoring module to automobile tire pressure is lower, when automobile tire pressure changes little, monitoring module is difficult to signal transmission to vehicle-mounted system in time for early warning, with great security risk.Therefore, the utility model provides a kind of automobile bluetooth tire pressure monitoring module for solving the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of automobile bluetooth tire pressure monitoring module to solve the problems presented in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile bluetooth tire pressure monitoring module, including tire valve, the connecting shell is communicated on the tire valve, the air pipe is communicated on the outer side of the connecting shell, the outer side of the air pipe is provided with outer tube, the inner chamber of the outer tube is fixedly provided with inner tube, the inner chamber of the air pipe, inner tube and outer tube is sequentially communicated, the inner chamber of the outer tube and inner tube is injected with hydraulic oil, the inner chamber of the inner tube is slidably installed with sealing plug compatible with it, the inner chamber of the outer tube is slidably installed with annular sealing element compatible with it, and the cross-sectional area of annular sealing element is greater than the cross-sectional area of sealing plug, one side of the outer tube is provided with annular pressure sensor.

[0007] Preferably, the inner tube is concentric with the outer tube, the inner tube is provided with two, and is located in the inner chamber of the two ends of outer tube respectively, the air pipe is in the shape of "T", and two ends are communicated with two inner tubes respectively.

[0008] Preferably, the outer tube and the inner tube are both arranged in arc shape and concentric with the automobile tire, and the outer side of the outer tube is fixedly installed with a mounting bracket, and the mounting bracket is fixed on the automobile hub.

[0009] Preferably, two circular plates are fixed to the inner cavity of the outer tube, and the two circular plates are respectively fixed to one end of the two inner tubes. The surface of the circular plate is penetrated by a lead hole connected to the inner cavity of the outer tube, and a connecting hole connected to the inner cavity of the inner tube. The annular pressure sensor is fixed to the side of the circular plate.

[0010] Preferably, a connecting hole is provided through the surface of the other end of the inner tube, a reset spring is provided in the inner cavity of the other end of the inner tube, and a pressure relief hole is provided on the surface of the outer tube, and the pressure relief hole is located between the two circular plates.

[0011] Preferably, a connecting sleeve is rotatably mounted on the outer side of the connecting shell, and the connecting sleeve is communicated with the inner cavity of the connecting shell. The connecting sleeve is threadedly sleeved on the outer side of the open end of the tire valve, and a rotating sleeve is fixedly sleeved on the outer side of the connecting sleeve.

[0012] Preferably, a connecting tube is fixed to one end surface of the connecting sleeve, the connecting tube is T-shaped and is rotatably mounted in the inner cavity of the connecting shell, and a sealing gasket is provided on the outer side wall of the connecting tube.

[0013] Preferably, an air vent is formed through one end surface of the connecting sleeve, and a column is fixedly provided on the inner wall of one end of the connecting sleeve, and the column presses on the air core of the tire valve.

[0014] Preferably, a Bluetooth module and a power module are fixedly mounted on the mounting frame, and the Bluetooth module and the annular pressure sensor are both electrically connected to the power module.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model is characterized in that an outer tube is provided on the outside of the ventilation pipe, an inner tube is fixed to the inner cavity of the outer tube, the inner cavities of the ventilation pipe, the inner tube and the outer tube are connected in sequence, a sealing plug is slidably provided in the inner cavity of the inner tube, an annular seal is slidably provided in the inner cavity of the outer tube, the inner cavity of the outer tube and the outer tube are filled with hydraulic oil, an annular pressure sensor is installed on one side of the outer tube, the ventilation pipe is connected with the inner cavity of the tire through the tire air nozzle, the ventilation pipe applies air pressure on the sealing plug, and transmits it to the annular seal with the help of hydraulic oil, and the annular seal applies pressure to the annular pressure sensor. Since the cross-sectional area of ​​the annular seal is larger than the cross-sectional area of ​​the sealing plug, even if the air pressure in the inner cavity of the ventilation pipe changes slightly, the pressure applied by the annular seal to the annular pressure sensor will also change greatly, so that the pressure change signal can be timely transmitted to the vehicle-mounted system for early warning by the Bluetooth module, thereby improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2The whole structure section schematic view of the utility model is shown in the figure.

[0019] Figure 3 The connecting sleeve structure section schematic view of the utility model is shown in the figure.

[0020] Figure 4 The outer pipe structure internal schematic view of the utility model is shown in the figure.

[0021] In the figure: 1, tire valve; 2, connecting shell; 3, breather pipe; 4, outer pipe; 41, annular sealing element; 42, pressure relief hole; 5, inner pipe; 51, sealing plug; 52, communication hole; 53, reset spring; 54, circular plate; 55, connecting hole; 56, lead hole; 6, annular pressure sensor; 7, mounting frame; 71, Bluetooth module; 72, power module; 8, connecting sleeve; 81, connecting cylinder; 82, air hole; 83, cylinder; 84, sealing gasket; 85, rotating sleeve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme of the utility model to be described clearly and completely, and the advantages are clearer and more apparent, the following will be further described in detail with the utility model embodiments combined with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all the embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without doing creative work are within the scope of the utility model.

[0023] Embodiment one, please refer to Figures 1-4The utility model provides a technical scheme: a kind of automobile bluetooth tire pressure monitoring module, including tire valve 1, there is connecting shell 2 on tire valve 1 intercommunication, connecting shell 2 outside intercommunication has vent pipe 3, the outside of vent pipe 3 is provided with outer tube 4, the inner chamber of outer tube 4 is fixed with inner tube 5, the inner chamber of vent pipe 3, inner tube 5 and outer tube 4 three is sequentially interconnected, the gas in the tire of automobile sequentially passes tire valve 1, connecting shell 2, vent pipe 3 inner chamber enters into the inner chamber of inner tube 5 and keeps pressure balance, outer tube 4 and the inner chamber of inner tube 5 intercommunication place are filled with hydraulic oil, the inner chamber of inner tube 5 is slidably installed with the sealing plug 51 compatible with it, the inner chamber of outer tube 4 is slidably installed with annular sealing element 41 compatible with it, one side of outer tube 4 is provided with annular pressure sensor 6, sealing plug 51 has the tendency of moving under the action of air pressure, at this time, annular sealing element 41 can exert pressure to annular pressure sensor 6, and annular pressure sensor 6 can monitor the air pressure in the inner chamber of the tire of automobile in real time, according to the principle of intercommunicator, the hydraulic oil oil pressure received on annular sealing element 41 and sealing plug 51 is consistent, since the cross-sectional area of annular sealing element 41 is greater than the cross-sectional area of sealing plug 51, in combination with pressure formula, F1 / S1=P=F2 / S2, wherein, F1 is the pressure received by annular sealing element 41, S1 is the cross-sectional area of annular sealing element 41, P is the internal oil pressure of hydraulic oil, F2 is the pressure received by inner tube 5, and S2 is the cross-sectional area of inner tube 5, so when the pressure exerted by the gas in the inner chamber of vent pipe 3 to the surface of sealing plug 51 changes, the pressure received by the side of annular sealing element 41 to annular pressure sensor 6 can change with greater variation, that is, the pressure change monitored by annular pressure sensor 6 is greater than the air pressure change in the tire of automobile, even if the air pressure change in the tire of automobile is small, annular pressure sensor 6 can also accurately monitor the pressure change and timely transmit to vehicle-mounted system, so as to timely warn and reduce security risks.

[0024] In order to further describe the structure of inner tube 5 and outer tube 4, the inner tube 5 of the present application is concentric with the outer tube 4, the inner tube 5 is provided with two, and is respectively located in the inner chamber of the two ends of the outer tube 4, as shown in Figure 2 and Figure 4 The annular pressure sensor 6 of the device is provided with two as a group, one is used for main monitoring, and the other is used for standby monitoring, the vent pipe 3 is in the shape of "T", and the two ends are respectively connected with two inner tubes 5, so that the two annular pressure sensors 6 can be monitored at the same time, to avoid that one of the annular pressure sensors 6 fails and cannot work in time.

[0025] In order to install and fix the outer tube 4, the outer tube 4 and the inner tube 5 of the present application are both arranged in an arc shape and concentric with the automobile tire. The outer tube 4 can be installed in a recessed part of the automobile wheel hub surface to avoid some raised parts affecting the installation of the outer tube 4. A mounting bracket 7 is fixedly installed on the outer side of the outer tube 4, and the mounting bracket 7 is fixed on the automobile wheel hub. The mounting bracket 7 is set to position the outer tube 4 to prevent the outer tube 4 from rotating.

[0026] In order to lead out the wires on the annular pressure sensor 6, the present application also has two circular plates 54 fixed in the inner cavity of the outer tube 4, and the two circular plates 54 are respectively fixed to one end of the two inner tubes 5. The surface of the circular plate 54 is penetrated by a lead hole 56 connected to the inner cavity of the outer tube 4 and a connection hole 55 connected to the inner cavity of the inner tube 5. The annular pressure sensor 6 is fixed to the side of the circular plate 54. Figure 4 As shown, the circular plate 54 can fix the inner tube 5 to prevent the inner tube 5 from shaking in the inner cavity of the outer tube 4. At the same time, the lead hole 56 can lead out the wires on the annular pressure sensor 6, and the connecting hole 55 is used to connect the ventilation tube 3 and the inner cavity of the inner tube 5.

[0027] In order to prevent the sealing plug 51 from shaking easily, the present application also has a connecting hole 52 formed on the surface of the other end of the inner tube 5, and a return spring 53 is provided in the inner cavity of the other end of the inner tube 5. Figure 2 As shown, the setting of the connecting hole 52 enables the hydraulic oil in the inner cavity of the inner tube 5 and the inner cavity of the outer tube 4 to be connected to each other for exchange. The connecting hole 52 has a small aperture, which can produce a damping effect on the flow of the hydraulic oil. In addition, the return spring 53 uses a spring with smaller elasticity to avoid excessive elasticity and offsetting the air pressure in the inner cavity of the vent pipe 3. The connecting hole 52 and the return spring 53 cooperate to produce a damping effect on the shaking and vibration of the sealing plug 51, thereby avoiding the influence of vibration generated when the car is driving. A pressure relief hole 42 is provided on the surface of the outer tube 4, and the pressure relief hole 42 is located between the two circular plates 54, which can be used to discharge the gas in the inner cavity of the outer tube 4 to the outside and can be used for the lead-out of the wires of the annular pressure sensor 6.

[0028] In order to connect the connecting shell 2 with the inner cavity of the tire air valve 1, the present application also has a connecting sleeve 8 rotatably installed on the outer side of the connecting shell 2, and the connecting sleeve 8 is connected to the inner cavity of the connecting shell 2. The connecting sleeve 8 is threadedly sleeved on the outer side of the open end of the tire air valve 1, and a rotating sleeve 85 is fixed on the outer side of the connecting sleeve 8. The setting of the connecting sleeve 8 is mainly used to connect the tire air valve 1 and fix it to the tire air valve 1. The setting of the rotating sleeve 85 can facilitate the work team to twist the connecting sleeve 8.

[0029] In order to adjust the installation position of the outer tube 4, the present application also has a connecting tube 81 fixed on one end surface of the connecting sleeve 8. The connecting tube 81 is "T" shaped and is rotatably installed in the inner cavity of the connecting shell 2. Figure 2As shown, the connecting shell 2 can only rotate outside the connecting cylinder 81 and cannot be separated from the connecting sleeve 8, and when the connecting sleeve 8 is connected with the tire valve 1 through threads, the connecting shell 2 can still rotate to adjust the installation position of the outer tube 4. The outer wall of the connecting cylinder 81 is provided with a sealing pad 84 to improve the sealing between the connecting cylinder 81 and the connecting shell 2 and avoid gas leakage.

[0030] In order to communicate the inner cavity of the vent pipe 3 with the inner cavity of the automobile tire, the application further has a vent hole 82 penetratingly arranged on one end surface of the connecting sleeve 8, and a cylinder 83 fixedly arranged on the inner wall of one end of the connecting sleeve 8 and pressing on the air core of the tire valve 1. The arrangement of the vent hole 82 ensures that the gas in the inner cavity of the tire valve 1 can enter the inner cavity of the vent pipe 3, and the arrangement of the cylinder 83 can push the air core inside the tire valve 1 after the connecting sleeve 8 is connected with the tire valve 1, thereby realizing the communication between the inner cavity of the vent pipe 3 and the inner cavity of the automobile tire.

[0031] In order to transmit the pressure signal, the application further has a Bluetooth module 71 and a power module 72 fixedly installed on the mounting bracket 7, and the Bluetooth module 71 and the annular pressure sensor 6 are electrically connected with the power module 72. The Bluetooth chip of the Bluetooth module 71 is DA14580, which is used to transmit the pressure signal monitored by the annular pressure sensor 6 to the vehicle-mounted system.

[0032] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A car Bluetooth tire pressure monitoring module, comprising a tire valve (1), characterized in that: The tire air nozzle (1) is connected to a connecting shell (2), and the outer side of the connecting shell (2) is connected to a vent pipe (3), and an outer tube (4) is provided on the outer side of the vent pipe (3), and an inner tube (5) is fixedly provided in the inner cavity of the outer tube (4). The inner cavities of the vent pipe (3), the inner tube (5) and the outer tube (4) are connected in sequence, and hydraulic oil is filled in the connection point between the inner cavities of the outer tube (4) and the inner tube (5). A sealing plug (51) adapted thereto is slidably installed in the inner cavity of the inner tube (5), and an annular sealing member (41) adapted thereto is slidably installed in the inner cavity of the outer tube (4), and the cross-sectional area of ​​the annular sealing member (41) is larger than the cross-sectional area of ​​the sealing plug (51). An annular pressure sensor (6) is provided on one side of the outer tube (4).

2. The automotive Bluetooth tire pressure monitoring module according to claim 1, characterized in that: The inner tube (5) is concentric with the outer tube (4), and the inner tube (5) is provided with two inner cavities, which are respectively located at the two ends of the outer tube (4). The ventilation tube (3) is in a "T" shape, and the two ends are respectively connected to the two inner tubes (5).

3. The automotive Bluetooth tire pressure monitoring module according to claim 2, characterized in that: The outer tube (4) and the inner tube (5) are both arranged in an arc shape and are concentric with the automobile tire. A mounting frame (7) is fixedly mounted on the outer side of the outer tube (4), and the mounting frame (7) is fixed on the automobile wheel hub.

4. The automotive Bluetooth tire pressure monitoring module according to claim 3, characterized in that: Two circular plates (54) are fixed to the inner cavity of the outer tube (4), and the two circular plates (54) are respectively fixed to one end of the two inner tubes (5). The surface of the circular plate (54) is provided with a lead hole (56) communicating with the inner cavity of the outer tube (4) and a connection hole (55) communicating with the inner cavity of the inner tube (5). The annular pressure sensor (6) is fixed to the side of the circular plate (54).

5. The automotive Bluetooth tire pressure monitoring module according to claim 4, characterized in that: A communicating hole (52) is provided through the surface of the other end of the inner tube (5), a return spring (53) is provided in the inner cavity of the other end of the inner tube (5), and a pressure relief hole (42) is provided on the surface of the outer tube (4), and the pressure relief hole (42) is located between two circular plates (54).

6. The automotive Bluetooth tire pressure monitoring module according to claim 1, characterized in that: A connecting sleeve (8) is rotatably mounted on the outer side of the connecting shell (2), and the connecting sleeve (8) is communicated with the inner cavity of the connecting shell (2). The connecting sleeve (8) is threadedly sleeved on the outer side of the open end of the tire valve (1), and a rotating sleeve (85) is fixedly sleeved on the outer side of the connecting sleeve (8).

7. The automotive Bluetooth tire pressure monitoring module according to claim 6, characterized in that: A connecting tube (81) is fixed to one end surface of the connecting sleeve (8). The connecting tube (81) is T-shaped and is rotatably mounted in the inner cavity of the connecting shell (2). A sealing gasket (84) is provided on the outer side wall of the connecting tube (81).

8. The automotive Bluetooth tire pressure monitoring module according to claim 7, characterized in that: An air vent (82) is provided through one end surface of the connecting sleeve (8), and a column (83) is fixedly provided on the inner wall of one end of the connecting sleeve (8), and the column (83) presses on the air core of the tire air nozzle (1).

9. The automotive Bluetooth tire pressure monitoring module according to claim 3, characterized in that: A Bluetooth module (71) and a power module (72) are fixedly mounted on the mounting frame (7), and the Bluetooth module (71) and the annular pressure sensor (6) are both electrically connected to the power module (72).

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