JP3064782U - Tire pressure detector and alarm device - Google Patents

Abstract

(57) [Summary] [Problem] The tire pressure can be detected at any time during driving of a car, and if an abnormality is found, the driver can be immediately alerted. Provides some excellent tire pressure detectors and alarm devices. SOLUTION: A case capable of introducing air in the tire is provided at an air inlet of the tire. This case has the first contact inside, which is always separated and makes contact when the tire pressure exceeds a certain set value. If it is lower than the set value, it has a second contact that separates, and the two kinds of abnormal states detected by these two contacts are transmitted by a radio transmitter, received by a receiver installed in the vehicle, An alarm generates a sound and light alarm.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tire pressure detector and an alarm device, and more particularly to a device for detecting an abnormal condition of whether a tire pressure is too high or too low while driving a car and issuing an alarm signal. is there.

[0002]

[Prior art]

 Appropriate tire pressures can have a significant effect on tire durability and vehicle safety. The conventional barometer is applied only when the automobile is stationary, detects the tire pressure by visual observation by an artificial operation, and adjusts the tire pressure within a preset range. With this, the driver cannot know the state of departure from the safe range of the tire pressure (for example, about 28 to 32 psi) due to the invasion of some foreign matter or the drastic change in temperature while the car is running, and the cause of the accident Becomes

[0003]

[Problems to be solved by the invention]

 The tire pressure detector and alarm device of the present invention have been developed to solve the above problems.

[0004] One of the objects of the present invention is to provide a tire pressure detector and an alarm device that can detect tire pressure at any time during driving of a car and can immediately alert a driver when an abnormality is found. .

Another object of the present invention is to provide an excellent tire pressure detector and alarm device which has a simple structure, high detection accuracy of tire pressure, and has practical value.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the developed tire pressure detector and alarm device of the present invention include a case installed above the air inlet of the tire and capable of introducing air from the tire. There are first and second airways in the case, and if the tire pressure exceeds a certain set value (for example, 32 psi) above the first airway, it is deformed and the first contact point also above the first airway. When the tire pressure becomes lower than a set value (for example, 28 psi) above the second airway, the first airway returns to the original shape and the second airway is restored. There is a second lead that separates from the upper second contact.

When the first lead and the first contact portion, which are always separated, come into contact with each other and become energized, this means that the tire pressure is too high, and the second contact, which is always in contact, Separation of the lead and the second contact point means that the tire pressure is too low. These two types of abnormal conditions are detected, and one radio transmitter causes each of the alarm signals to be received by a receiver installed in the vehicle, and furthermore, an in-vehicle alarm generates a sound and light alarm.

[0008]

[Embodiment of the invention]

 Please refer to FIG. The tire pressure detector and alarm device according to the present invention includes a case 10 installed above the air inlet 90 of the tire and capable of introducing air inside the tire, and the first and second airways in the case 10. If the tire pressure exceeds a certain set value (for example, 32 psi) above the first airway 11, it deforms and comes into contact with the first contact portion 21 also above the first airway 11. When the tire pressure becomes lower than a set value (for example, 28 psi) above the second airway 12, the first lead 31 is turned on and the second lead is restored to its original shape. There is a second lead 32 that separates from the second contact point 22 above the airway 12. When the first lead 31 and the first contact portion 21 that are always separated come into contact with each other and become energized, this means that the tire pressure is too high, and the second lead 32 that is normally in contact is connected. Separation of the second contact portion 22 from the second contact portion 22 means that the tire pressure is too low.

These two types of abnormal conditions are detected, and one radio signal oscillating device 40 transmits respective alarm signals. Please refer to FIG. Each alarm signal is received by a receiver 50 installed in the vehicle, and an alarm 60 generates a sound and light alarm to warn the driver of an abnormal tire pressure.

Please refer to FIG. The case 10 includes one upper cover 13 and one lower base 14, and at the bottom of the upper cover 13, there is an outer thread part 131 having a sled engraved on the outside. At the top of the lower base 14, there is formed a stepped surface 144 that is gradually lowered toward one inside, and one sled portion 141 is formed inside the upper step. It is formed and screwed with the outer sled portion 131 of the upper cover 13. Further, one air supply hole 142 is provided at the bottom of the lower base 14, and the main body 10 is screwed and fixed to the air inlet 90 of the tire of the vehicle. The upper end of the air supply hole 142 communicates with the first and second airways 11 and 12, respectively. A rubber washer 145 for preventing leakage and a push rod 143 are installed on the air supply hole 142, and the check valve 91 of the air inlet 90 is pushed by the push rod 143. When this is released, the air in the tire enters the first and second airways 11 and 12 in the case 10 from the air supply hole 142. In addition, since the outlets of the airways 11 and 12 are covered with elastic films 15 and 16, respectively, there is no fear that air leaks out. At the center of the lower base 14, a receiving portion 146 having a circular hole shape is provided in a recessed manner.

The radio signal transmitting device 40 is installed in the upper cover 13 and includes a control circuit therein, and as shown in FIG. 4, transmits a signal to a receiver 50 in the vehicle at an appropriate time.

The first and second leads 31 and 32 are integrally formed of, for example, a conductive metal material into a U-shaped flexible strap shape, and are housed in the housing portion 146 of the lower base 14. The tips at both ends extend outward and have an arcuate shape having a concave portion as a whole. The thickness of the first lead 31 corresponding to the first airway 11 is larger than that of the second lead 32 corresponding to the second airway 12. This is because the first lead 31 receives a higher pressure than the second lead 32.

The first and second insulating portions 23 and 24 are interposed between the first and second contact portions 21 and 22 and the first and second leads 31 and 32, respectively. The central portions of the first and second contact portions 21 and 22 are protruded, and are configured to be able to immediately contact the first and second leads 31 and 32 when necessary. The first and second contact portions 21 and 22 are connected to the third and fourth contacts 25 and 26 of the radio signal transmitting device 40, respectively.

The battery 70 is accommodated in the accommodating portion 146 of the lower base 14, is electrically connected to the first and second leads 31 and 32, and supplies power as a power source of the radio signal transmitting device 40.

Please refer to FIG. As described above, the thicknesses of the first and second leads 31 and 32 are determined according to the pressure that they bear. In this embodiment, the first lead 31 is deformed only at a pressure of 32 psi or more, and the second lead 32 is deformed at a pressure of 28 psi or more. That is, under normal tire pressure (32 psi to 28 psi in this embodiment), the first lead 31 is not deformed, the first lead 31 is separated from the first contact portion 21, and the second lead 32 Is deformed by being pressed by the stretchable film 16, comes into contact with the second contact portion 22, is blocked by the control circuit, the radio signal transmitting device 40 does not emit a signal, and the alarm does not operate.

However, as shown in FIG. 2, when the tire pressure becomes 28 psi or less, the thrust pressure received by the second lead 32 decreases, and the second lead 32 returns to its original concave shape, It is separated from the two contact portions 22. At this time, the control circuit causes the radio signal oscillating device 40 to output an abnormally low pressure signal to activate the alarm 60.

As shown in FIG. 3, when the tire pressure becomes 32 psi or more, the first lead 31 is deformed by receiving an excessive thrust, and comes into contact with the first contact portion 21 to energize. In response to a command from the control circuit, the radio signal oscillating device 40 outputs an abnormally high voltage signal to activate the alarm 60.

As shown in FIGS. 4 and 5, the receiver 50 and the alarm 60 are placed on the dashboard in the vehicle. The alarm 60 includes one buzzer 61 and several three-color LED bulbs 62 corresponding to each wheel. The buzzer 61 issues a corresponding audio warning in response to various different signals received by the receiver 50, and the three-color LED bulb 62 can also respond with different light colors. For example, green may represent normal atmospheric pressure, yellow may represent abnormally low pressure, and red may represent abnormally high pressure.

[0019]

[Effect of the invention]

 As described above, according to the present invention, tire pressure can be detected at any time during driving of an automobile, and a driver can be immediately alerted when an abnormality is found. In addition, it is possible to provide a tire pressure detector and an alarm device having a simple structure and a high practical value.

The contents of the present invention are not limited to the above-described embodiment, and a slight modification can be made to the contents of the present specification as long as the person skilled in the art has ordinary knowledge. However, if the concept does not fall outside the spirit of the claims of the present invention, they should all be included in the present invention.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an internal structure of a tire pressure detector and an alarm device according to an embodiment of the present invention when pressure is at a set normal value.

FIG. 2 is a cross-sectional view showing an internal structure of the tire pressure detector and the alarm device according to the embodiment of the present invention, in which the pressure is below a set range.

FIG. 3 is a cross-sectional view of the internal structure of the tire pressure detector and the alarm device according to the embodiment of the present invention, showing a state where the pressure is equal to or higher than a set range.

FIG. 4 is a schematic view of the device of the present invention arranged in a vehicle.

FIG. 5 is a schematic view of the device of the present invention arranged in a vehicle.

[Explanation of symbols]

 10: Case 11: First Airway 12: Second Airway 13: Upper Cover 144: Stair Surface 145: Rubber / Washer for Leak Prevention 146: Housing 15: Telescopic Film 26: Fourth Contact 31: First Lead 32: First 2 lead 40: radio signal transmitting device 131: outside sled part 132: pressure balance hole 14: lower base 141: inside sled part 142: air supply hole 143: push rod 16: telescopic film 21: first contact part 22: first contact part 2 contact portions 23: first insulator 24: second insulator 25: third contact 50: receiver 60: alarm 61: buzzer 62: three-color LED bulb 70: battery 90: air inlet 91: check valve

Claims (3)

[Utility model registration claims] 1. A case having a first airway and a second airway which are installed at an air inlet of a tire and in which the air of the tire is respectively taken therein; A first lead and a first contact portion installed on the first airway in contact with each other; always in contact with each other and in an energized state, and are separated from each other when the tire pressure becomes lower than a set value. A second lead and a second contact portion installed in the second airway;
When placed in the case and the first lead and the first contact portion come into contact with each other and become conductive, an abnormally high voltage alarm signal is transmitted, and the second lead is separated from the second contact portion. A radio signal transmitting device for transmitting an abnormally low pressure alarm signal; a receiver for receiving a signal transmitted from the radio signal transmitting device; and a receiver for receiving a signal transmitted from the radio signal transmitting device; And an alarm device for generating a different voice and a different color of light by a signal received by the receiver; and when the tire pressure exceeds a set value, the first lead is deformed and the first contact is deformed. The second lead returns to its original shape and separates from the second contact portion when the tire pressure falls below a set value by contact with the contact portion. Itekuta and alarm equipment. 2. The first lead according to claim 1, wherein the first and second leads are formed integrally from a conductive material, and the thickness of the first lead is larger than that of the second lead.
The tire pressure detector and the alarm device described in the item. 3. The case includes one upper cover and one lower base screwed to each other, wherein the upper cover has
A pressure balance hole for introducing external air into the case is provided, and an air supply port having a single push rod is provided at the bottom of the lower base so as to be screwed into an air supply port of a tire. The tire pressure detector and alarm device according to claim 1, wherein air in the tire is introduced into the first and second airways in the case.