Claims:We Claim:
1. A device 100 for detecting pressure in a tire with a wet environment therein, the device 100 comprising:
a pressure sensor 110 configured inside a housing 140 and filled with a filling material 160 for encasing the pressure sensor 110, and having a passage 150 on a portion of the housing 140 for enabling the pressure sensor 110 to detect the pressure in the tire;
wherein, a bush 120 is arranged between the passage 150 and the pressure sensor 110 for preventing blocking of the passage 150 by the filling material 160, so that the pressure sensor 110 can sense pressure in the tire; and
an interface 130 is arranged at a proximal end of the passage 150, the interface 130 is adapted to restrict the ingress of aqueous matter therethrough into the passage 150 and the housing 140.
2. The device 100 as claimed in claim 1, wherein the bush 120 protects the interface 130 from the filling material 160.

3. The device 100 as claimed in claim 1, wherein the interface 130 is a membrane with oleophobic coating therewith.

4. The device 100 as claimed in claim 1, wherein the housing 140 is securely attached to a valve stem 210 of the tire.

5. The device 100 as claimed in claim 1, wherein the device 100 is provided with a wireless transmission system for transmitting various parameters to a terminal of the vehicle.
, Description:Field of the Invention

[0001] The present invention relates to a pressure sensor arranged inside a vehicle tire. More specifically, the present invention relates to a pressure sensor for detecting pressure in a tire with a wet environment.

Background of the Invention

[0002] Pressure sensors arranged inside vehicle tires are becoming an essential factor for improving the lifespan of tires. The pressure sensors effectively monitor the variation of pressure inside the tires periodically and are capable of alerting an occupant inside the vehicle in case there is any pressure difference.

[0003] Further, the vehicle tires are subjected to be exposed to various climatic and environmental conditions. Environmental factors have specific effects on the performance of the tires. For example, the vehicle has to be driven in muddy roads or other wet environmental conditions allowing water and other aqueous particles to get inside the tire. These extraneous liquid particles may disallow the working of the pressure sensors. Specifically, in case of a tractor, the tires are filled with water partially, for better stability and control while driving in wet conditions or farms. The pressure sensors inside these vehicle tires are subjected to wet conditions throughout for an extended period which may dysfunction the working of the pressure sensors inside the tires.

[0004] Therefore, there is a requirement of a pressure sensor for detecting pressure in a tire with a wet environment, which overcomes few or all of the drawbacks of the present arrangement of pressure sensors.

Objects of the Invention

[0005] An object of the present invention is to provide a device for detecting pressure in a tire with a wet environment inside the tire.

[0006] Another object of the present invention is to provide a device for detecting pressure in a tire with a wet environment inside the tire, which is adapted to resist water or other aqueous substances or any harmful gaseous materials in the device.

[0007] Yet another object of the present invention is to provide a device for detecting pressure in a tire with a wet environment inside the tire, which can remotely connect with a terminal of an occupant or the vehicle through a wireless transmission system.

[0008] One more object of the present invention is to provide a device for detecting pressure in a tire with a wet environment inside the tire, which is simple in construction and design.

[0009] Further, one more object of the present invention is to provide a device for detecting pressure in a tire with a wet environment inside the tire, which is robust in construction.

Summary of the invention

[0010] According to the present invention, there is provided with a device for detecting pressure in a tire. The device is arranged inside the tire and specifically attached to valves in each tire and snaps onto an inner surface of rims. The device includes a pressure sensor, a bush and an interface. The pressure sensor is configured inside a housing. The housing is a plastic casing which prevents and shields the pressure sensor from external shocks. The housing is filled with a filling material for sealing and encasing the pressure sensor.

[0011] Further, the housing is provided with a passage for enabling the pressure sensor to detect the pressure in the tire. Specifically, the passage is configured on a top portion of the housing for detecting the pressure in the tire. The bottom portion of the housing is attached to the rim of the vehicle. The bush is arranged between the passage and the pressure sensor. The bush is a rubber bush which prevents the blocking of the passage while filling the filling material so that the pressure sensor can sense pressure in the tire. The bush also protects the interface from the filling material. The filling material initially is viscous in nature and gets solidified after filling. Further, the device is provided with the interface arranged at a proximal end of the passage.

[0012] The interface is a membrane which is adapted to restrict the ingress of aqueous matter therethrough into the passage and the housing. The interface is water resistant as well as does not allow any harmful gaseous substances into the housing. The interface has an oleophobic coating which restricts the entry of water and other aqueous matters. In an embodiment, the device is provided with a wireless transmission system which transmits the measured parameters such as tire pressure or temperature to a terminal of the vehicle. The wireless transmission system may be a Bluetooth enabled chip or Wi-Fi module. The terminal may be a display in an interior panel of the vehicle or a smartphone of an occupant.

Brief Description of the Drawings

[0013] The advantages and features of the present invention will be understood better with reference to the following detailed description and claims taken in conjunction with the accompanying drawings, wherein like elements are identified with like symbols, and in which:

[0014] Figure 1 illustrates schematic arrangement of a device for detecting pressure in a tire in accordance with the present invention;

[0015] Figure 2 shows an exploded view of the device;

[0016] Figure 3 illustrates the arrangement of a pressure sensor in the device;

[0017] Figure 4 illustrates a perspective view of figure 3;

[0018] Figure 5 shows the device filled with a filling material; and

[0019] Figure 6 shows a perspective view of the device inside the tire in accordance with the present invention.

Detail Description of the Invention

[0020] An embodiment of this invention, illustrating its features, will now be described in detail. The words "comprising, "having, "containing," and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items.

[0021] The terms “first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and the terms “an” and “a” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.

[0022] The disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms.

[0023] Referring to figure 1, a perspective view of a device 100 for detecting pressure in a tire (not shown) in accordance with the present invention is illustrated. The device 100 is arranged inside the tire and attached to a valve stem 210 of the tire. Specifically, the device 100 is fastened to an end portion of the valve stem 210 using a fastener 212. The valve stem 210 has inner threads at the one end and is aligned with the device 100. The fastener 212 securely attaches the device 100 with the inner threads of the valve stem 210. The fastener 212 may be a screw or any other fasteners which may be obvious to a person skilled in the art. Preferably, the device 100 is arranged inside each of the tires of the vehicle. The device 100 can be used in any weather conditions such as the wet or dry environment. Specifically, the device 100 is designed to be useful in a wet environment inside the tire, like tires of a tractor.

[0024] Referring now to figures 2, 3, and 4, the device 100 includes a pressure sensor 110, a bush 120 and an interface 130. The pressure sensor 110 is configured inside a housing 140. The pressure sensor 110 may be having a coin cell battery 114 integral to a PCB 112 of the pressure sensor 110. The housing 140 is a plastic casing which prevents and shields the pressure sensor 110 from external shocks. The housing 140 can be of any size and shape to accommodate the pressure sensor 110 therein. The housing 140 is filled with a filling material 160 as shown in figure 5 for sealing and encasing the pressure sensor 110. The filling material 160 insulates and encapsulates the components inside the housing 140. In this embodiment, the housing 140 is securely attached to the valve stem 210 using the fastener 212 as shown in figures 1 and 6.

[0025] Further, the housing 140 is provided with a passage 150 for enabling the pressure sensor 110 to detect the pressure in the tire as shown in figures 1 and 2. Specifically, the passage 150 is configured on a top portion of the housing 140. The bottom portion of the housing 140 is attached to the rim of the vehicle. The device 100 is further provided with the bush 120 which is arranged between the passage 150 and the pressure sensor 110. The bush 120 is a rubber bush which prevents the blocking of the passage 150 while filling the filling material 160 so that the pressure sensor 110 can sense pressure in the tire. The filling material initially is viscous in nature and gets solidified after filling. It may be obvious to a person skilled in the art to provide any other similar material for making the bush 120.

[0026] Further referring again to figure 2, the interface 130 is arranged at a proximal end of the passage 150. Specifically, the interface 130 is arranged between the bush 120 and the passage 150. The bush 120 also protects the interface 130 from the filling material 160. In the present embodiment, the interface 130 is a membrane which is adapted to restrict the ingress of aqueous matter therethrough into the passage 150 and the housing 140. The interface 130 is water resistant as well as does not allow harmful gaseous substances into the housing 140. The interface 130 is having an oleophobic coating which restricts the entry of water and other aqueous matters. The interface 130 may be an oleophobic material. The interface 130 further protects the pressure sensor 110 inside the housing 140 from the effect of the wet environment inside the tire.

[0027] The device 100 is useful for off-road vehicles, specifically for tractors which are having partly filled water inside the tires. The interface 130 prevents the ingress of the water into the housing 140, which prevents the pressure sensor 110 for any damages. It may be obvious to a person skilled in the art to provide other sensing elements within the housing 140.

[0028] In an embodiment, the device 100 is provided with a wireless transmission system 116 which transmits the measured parameters such as tire pressure and other parameters to a terminal (not shown) of the vehicle. The wireless transmission system 116 may be a Bluetooth enabled chip or a Wi-Fi module. The terminal may be a smart display in an interior panel of the vehicle or a smartphone of an occupant. The terminal may be adapted to retrieve the information through the wireless transmission system 116. The communication between the device 100 and the terminal is possible using an application module programmed in the terminal.

[0029] Therefore the present invention has an advantage of providing the device 100 for detecting pressure in the tire with the wet environment inside the tire. The device 100 is adapted to resist water or other aqueous substances or any harmful gaseous materials in the device 100. The device 100 can remotely connect with the terminal of the occupant or the vehicle through the wireless transmission system 116. Further, the device 100 is simple in construction and design and is robust in construction.

[0030] The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilise the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the scope of the claims of the present invention.