TWI535583B - An anti-interference antenna of a wireless tire pressure receiver - Google Patents

Description

Anti-jamming antenna for wireless tire pressure receiver

The invention relates to an anti-interference antenna for a wireless tire pressure receiver, in particular to an antenna integrated in a power supply wire of a wireless tire pressure receiver and having electromagnetic interference of a shielded power supply line.

According to the tire, the hollow body is made of synthetic rubber. After inflation, the tire pressure is formed inside, and the normal or not the tire pressure can be used normally, which seriously affects the driving safety. Since the tire is an important part of the vehicle, it is always necessary to pay attention to the tire pressure and temperature of the tire to ensure the safety of the tire. In order to facilitate the driver to grasp the tire pressure condition of the seat car at any time, the new tire tire is equipped with a wireless tire pressure gauge, which periodically wirelessly transmits the detected tire pressure to a wireless tire pressure receiver in the vehicle. Through the interpretation and display of the wireless tire pressure receiver, the tire pressure information of each tire is provided to the driver at any time, so as to facilitate the driver to take precaution measures when the tire pressure is abnormal.

It can be seen from the working principle of the wireless tire pressure gauge and the wireless tire pressure receiver that an antenna is internally built in the wireless tire pressure receiver to receive signals transmitted by the wireless tire pressure gauges. Since the wireless tire pressure receiver is attached to the driver's seat in a separate form, its volume is not large, and the installation position is not fixed. Under this condition, the built-in antenna of the wireless tire pressure receiver is difficult in terms of specifications and performance. As expected, in particular, the signal reception intensity may not be ideal. In order to solve the above problems, the applicant's previous application for the approval of China's new patent right No. M280309 "Wireless tire pressure receiver antenna structure improvement" proposed a feasible solution to improve the signal receiving strength of the wireless tire pressure receiver.

The technical solutions proposed in the foregoing patents, as shown in FIGS. 18 and 19, mainly comprise a wireless tire pressure receiver 1 in a box body, and an antenna 2 and a circuit board connected to the antenna 2 are disposed inside the box body. 3, the box body is provided at a corner end with a socket 4 for inserting a power supply wire 5 for connecting the cigarette lighter in the vehicle through the power supply wire 5, and feeding the power supply to the circuit substrate in the casing to supply the same Working power supply.

The main improvement of the above patent is to extend the antenna 2 of the receiver 1 to the socket 4, and then the power supply wire 5 is internally covered with an antenna 51. The power supply wire 5 and the antenna 51 are transmitted through a plug. 52 is plugged into the socket 4 of the receiver 1, whereby in addition to forming a power supply circuit, the antenna 51 in the power supply line 5 is also connected to the antenna 2 in the receiver 1, so that the length of the antenna is effectively increased. In turn, the received signal strength is effectively enhanced.

The aforementioned patents effectively extend the length of the antenna provided in the receiver 1 by integrating an antenna in the power supply line, which does have significant effects for improving the signal receiving strength. However, the technical measures adopted by the technology still have room for improvement in the interference shielding measures. The reason is that the above patent case encapsulates another antenna in the power supply wire. When the antenna is working, there is a current between the power supply wire and the antenna. Flow, when the power supply wire and the antenna are tightly wrapped together, the mutual electromagnetic interference is inevitable, and once the interference occurs, it will affect the normal operation of the antenna.

Therefore, it can be known from the above that integrating the antenna in the power supply wire of the wireless tire pressure receiver to extend the length of the antenna and improve the signal receiving strength is a feasible technical solution, but an effective solution still needs to be further proposed in the interference prevention.

Therefore, the main object of the present invention is to provide an anti-interference antenna for a wireless tire pressure receiver, which mainly integrates an antenna in a power supply wire of a wireless tire pressure receiver, but has a shielding measure on the power supply wire to effectively solve the interference problem.

The main technical means adopted for achieving the above-mentioned purposes are mainly to form a pair of wires on the main wire of the strip shape, wherein a power cable is arranged in the longitudinal direction of the main wire, and an antenna is inserted in the longitudinal direction of the auxiliary wire. The antenna is mainly connected to the wireless tire pressure receiver to improve the signal receiving strength; since the antenna is independently wrapped in the auxiliary wire, it can ensure that the antenna and the power cable do not interfere with each other.

Another feasible technical means of the antenna is that a plurality of intermediate air gaps extending along the longitudinal direction thereof are formed in the strip-shaped insulated wire, and the two ends of the insulated wire in the width direction are a main wire and a pair of wires, respectively. The wire and the auxiliary wire are located at opposite ends of the air gap, and the power cable and the antenna are respectively disposed along the length direction, so that the at least one air gap is located between the power cable and the antenna; An antenna can be integrated in the power supply wire of the wireless tire pressure receiver to improve the signal receiving strength; shielding is formed between the power cable and the antenna due to the special air gap design in the insulated wire, and the antenna and the power source can be effectively prevented. The cables interfere with each other.

Referring to an embodiment of the present invention, first referring to FIGS. 1 through 3, an insulated wire 10, a power cable 20, and an antenna 30 are included.

The insulated wire 10 is in the form of a strip and is composed of a main wire 11 , a pair of wires 12 and at least one metal layer 14 . The sub-wire 12 is connected to the main wire 11 in parallel and partially, and has a wire diameter smaller than the main wire 11. Both the main wire 11 and the sub wire 12 are insulated.

The power cable 20 is inserted into the main wire 11 in the longitudinal direction. The power cable 20 has at least one electric wire, and the at least one electric wire has a corresponding core wire 21 coated with an insulating coating layer 22 respectively. To achieve electromagnetic shielding capability of the main wire 11, the at least one metal layer 14 is as shown in the figure. As shown in FIG. 2, a metal layer ring is disposed on the power cable 20, or as shown in FIG. 3, two metal layers are respectively wrapped on the two wires of the at least one power cable.

The antenna 30 is placed in the sub-wire 12 in the longitudinal direction.

As is apparent from the foregoing embodiment, since the antenna 30 is independently wrapped in the insulated sub-wire 12, and the power cable 20 is covered by the metal layer 14 and covered by the insulated main wire 11, a shielding effect is produced. Thereby, mutual interference between the power cable 20 and the antenna 30 can be effectively prevented.

Referring now to Figures 4 through 6, a further embodiment of the invention includes an insulated wire 10, a power cable 20 and an antenna 30.

The insulated wire 10 is in the form of a strip and is composed of a main wire 11 , a pair of wires 12 , at least one air gap 13 and at least one metal layer 14 . The main wire 11 has an elliptical cross section in the width direction and has an inner edge 15 and an outer edge 16; the elliptical cross section has a short height and a long width. The secondary wire 12 is parallel to the main wire 11 and partially connected to the inner edge of the main wire 11 and has a wire diameter equal to the height of the elliptical cross section of the main wire 11. The at least one air gap 13 is inserted into the aforementioned main wire 11 in the longitudinal direction and adjacent to the inner edge 15 of the main wire 11. The at least one air gap 13 is provided with a corresponding metal layer 14 on its inner wall. Both the main wire 11 and the sub wire 12 are insulated.

In the present embodiment, there is an air gap 13 having two wires.

The power cable 20 is inserted into the main wire 11 in the longitudinal direction and is located between the outer edge 16 of the main wire 11 and the air gap 13. A metal layer 14, as shown in FIG. 7, is provided on the power cable 20, or a two metal layer 14, as shown in FIG. 8, wrapped on a corresponding wire, or a metal layer 14, as shown in FIG. As shown in FIG. 9, the power cable 20 and the air gap 13 are simultaneously surrounded.

The antenna 30 is bored in the sub-wire 12 in the longitudinal direction, and is located eccentrically on a side of the sub-wire 12 that is away from the inner edge 15 of the main wire 11.

The air gap 13 between the power cable 20 and the antenna 30 is disposed on the inner wall of the air gap 13 , is disposed on the power cable 20 or each wire or surrounds the power cable 20 and the air gap. The metal layer 14 of 13 can effectively prevent mutual interference between the power cable 20 and the antenna 30. Referring to FIG. 10, if an electromagnetic interference shield 17 is filled, the air gap 13 has better electromagnetic interference shielding capability.

Referring again to FIGS. 11-13, in accordance with yet another embodiment of the present invention, an insulated wire 40, a power cable 20, and an antenna 30 are included.

The insulated wire 40 is in the form of a strip and is composed of a main wire 11 , a pair of wires 12 , at least one air gap 41 and at least one metal layer 44 . The main wire 11 and the sub wire 12 are integrally formed in a flat shape. The at least one air gap 41 is interposed between the main wire 11 and the sub wire 12 in the longitudinal direction and extends toward both sides in the width direction.

In the present embodiment, there is an air gap 41.

The power cable 20 is bored in the main wire 11 of the insulated wire 40 in the longitudinal direction. Since the antenna 30 is inserted through the sub-wire 12 of the insulated wire 40 in the longitudinal direction, the power cable 20 and the antenna 30 are disposed on both sides of the air gap 41 and separated by the air gap 41. A metal layer 44, as shown in FIG. 13, is disposed on the inner wall of the air gap 41, or a metal layer 44, as shown in FIG. 14, the ring is disposed on the power cable 20, or the two metal layers 44, such as As shown in FIG. 15, it is wrapped on a corresponding electric wire, or a metal layer 44, as shown in FIG. 16, which surrounds the power cable 20 and the air gap 41 at the same time.

The air gap 41 between the power cable 20 and the antenna 30 is disposed on the inner wall of the air gap 41, is disposed on the power cable 20 or each of the wires 21 or surrounds the power cable 20 and the air gap. The metal layer 14 of 41 can effectively prevent mutual interference between the power cable 20 and the antenna 30. Referring to FIG. 17, if an electromagnetic interference shield 47 is filled, the air gap 41 has better electromagnetic interference shielding capability.

When the structure disclosed in the foregoing embodiment is used as the power supply wire of the wireless tire pressure receiver, the power cable and the antenna on the insulated wire can be respectively connected to the power input end and the built-in antenna inside the wireless tire pressure receiver, and the antenna is used as the antenna. The extension of the built-in antenna can effectively enhance the signal receiving strength. In terms of the power cable, the internal power cable and the antenna interfere with each other. In addition to the aforementioned application methods, the antenna of the present invention can be directly connected to the wireless tire pressure receiver and used as its receiving antenna, that is, the wireless tire pressure receiver does not need a built-in antenna, which can reduce the cost and save the space of the receiver.

10, 40. . . Insulated wire

11. . . Main wire

12. . . Secondary wire

13, 41. . . Air gap

14, 44. . . Metal layer

15. . . Inner edge

16. . . Outer edge

17, 47. . . Electromagnetic interference shield

20. . . Power cable

twenty one. . . Wire

twenty two. . . Insulating coating

30. . . antenna

1 is a perspective view of an anti-interference antenna of a wireless tire pressure receiver according to an embodiment of the present invention.

2 is a cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of FIG. 1.

3 is a further cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of FIG. 1.

4 is a perspective view of an anti-jamming antenna of a wireless tire pressure receiver according to still another embodiment of the present invention.

Figure 5 is a first cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 4.

6 is a second cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of FIG. 4.

7 is a third cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of FIG. 4.

Figure 8 is a fourth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 4.

Figure 9 is a fifth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 4.

Figure 10 is a sixth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 4.

Figure 11 is a perspective view of an anti-jamming antenna of a wireless tire pressure receiver according to still another embodiment of the present invention.

Figure 12 is a first cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 13 is a second cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 14 is a third cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 15 is a fourth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 16 is a fifth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 17 is a sixth cross-sectional view of the anti-jamming antenna of the wireless tire pressure receiver of Figure 11.

Figure 18 is an exploded view of China's new patent right No. M280309.

Fig. 19 is a schematic view showing the state of use of the new patent right No. M280309 of China.

10‧‧‧Insulated wire

11‧‧‧Main wire

12‧‧‧Sub-wire

13‧‧‧ Air gap

14‧‧‧metal layer

20‧‧‧Power cable

30‧‧‧Antenna

Claims (14)

An anti-jamming antenna for a wireless tire pressure receiver comprises: an insulated wire material consisting of a strip of main wire and a secondary wire connected in parallel with the main wire and partially connected, the main wire and the auxiliary wire are insulated; The power cable is disposed in the longitudinal direction of the main wire and has at least one electric wire; an antenna is inserted into the auxiliary wire in a longitudinal direction; at least one air gap is inserted into the insulated wire in a length direction To separate the power cable from the antenna. An anti-jamming antenna for a wireless tire-pressure receiver according to claim 1, wherein the main wire has a radially elliptical cross section and has an inner edge and an outer edge, and the elliptical cross section has a short height and a long width, the secondary wire being parallel to the main wire and partially connected to the inner edge of the main wire and having a wire diameter equal to the height of the elliptical cross section of the main wire, each air gap of the at least one air gap The lengthwise direction is inserted into the aforementioned main wire and adjacent to the inner edge of the main wire. The anti-interference antenna of the wireless tire pressure receiver according to claim 1, wherein the main wire and the auxiliary wire are integrally formed, so that the insulated wire has a flat shape, and the at least one air gap faces the two sides in the width direction. extend. The anti-interference antenna of the wireless tire pressure receiver according to claim 1, wherein the insulated wire further comprises a metal layer to be ringed on the power cable. The anti-interference antenna of the wireless tire pressure receiver according to claim 1, wherein the insulated wire further comprises at least one metal layer to be connected to a corresponding wire of the power cable. The anti-interference antenna of the wireless tire pressure receiver according to claim 2, wherein the inner wall of the air gap of the insulated wire is further provided with a metal layer. The anti-jamming antenna of the wireless tire pressure receiver according to claim 2, wherein the insulated wire further comprises a metal layer to surround the power cable. The anti-interference antenna of the wireless tire pressure receiver according to claim 2, wherein the insulated wire further comprises at least one metal layer, the at least one metal layer covering a corresponding wire of the power cable. The anti-interference antenna of the wireless tire pressure receiver according to claim 2, wherein the insulated wire further comprises a metal layer to surround the power cable and the at least one air gap. The anti-interference antenna of the wireless tire pressure receiver according to claim 3, wherein the at least one air gap inner wall of the insulated wire is further provided with a metal layer. The anti-jamming antenna of the wireless tire pressure receiver according to claim 3, wherein the insulating wire further comprises a metal layer to be ringed on the power cable. The anti-interference antenna of the wireless tire pressure receiver according to claim 3, wherein the insulated wire further comprises at least one metal layer, the at least one metal layer covering a corresponding wire of the power cable. The anti-jamming antenna of the wireless tire pressure receiver according to claim 3, wherein the insulating wire further comprises a metal layer to surround the power cable and the at least one air gap. An anti-interference antenna for a wireless tire pressure receiver according to any one of claims 2, 3 or 6 to 13, wherein at least one of the insulated wires The air gap is filled with an electromagnetic interference shield.