CN202399842U

CN202399842U - In-tire pressure detector

Info

Publication number: CN202399842U
Application number: CN2011204808207U
Authority: CN
Inventors: 廖文斌
Original assignee: JIUCHENG ELECTRONIC CO Ltd
Current assignee: JIUCHENG ELECTRONIC CO Ltd
Priority date: 2011-11-28
Filing date: 2011-11-28
Publication date: 2012-08-29
Anticipated expiration: 2021-11-28

Abstract

The utility model discloses an in-tire pressure detector comprising a tire pressure detector, a main air tap body, an antenna connecting line, an outer air tap and an insulating sleeve body, wherein a tire pressure detector body is arranged on a steel ring in a tire and internally provided with a detecting circuit board for detecting the pressure of the tire; the main air tap body is made of metal, arranged at the front end of the tire pressure detector body, provided with threads at the periphery and sleeved with a leakage-proof gasket at the root part, and the outer segment part of the main air tap body is fixed by a screw cap after passing through and extending out of a perforation hole of the steel ring in the tire; first through holes are penetrated and extended at two ends of the antenna connecting line, and the inner end of the antenna connecting line is electrically connected to an antenna connecting point of the detecting circuit board; the outer air tap is made of a metal conductor and provided with a second through hole along the axial direction, the inside segment of the outer air tap is provided with a second connecting segment capable of being sleeved and connected with a first connecting segment, and the second connecting segment is opposite to the first connecting segment; and the insulating sleeve body is provided with an axial hole and arranged between connecting surfaces of the first connecting segment and the second connecting segment. The in-tire pressure detector can be used for effectively increasing the signal transmitting efficiency, relatively accurately transmitting signals to a receiver in a vehicle and improving the tire pressure detecting reliability to further improve the safety in use.

Description

Type pressure detection device in the tire

Technical field

The utility model relates to type pressure detection device in a kind of tire; Especially refer to an insulation body; Make outside valve and this tire pressure detector body form electrical isolation; Make outside valve become an emitting antenna independently, can avoid causing and transmitting badly, can be able to the tire pressure signal of inside tires is accurately launched because of all wire tyre forms the electric wave shielding.

Background technology

Vehicle or tanned by the sun and after night, temperature descended, is easy to generate the pressure release situation through sunshine after a period of time of going; And make tire pressure be lower than normal value 28psi; For traffic safety, be a kind of potential danger, the especially vehicle in running at high speed; As because of the explosion of tire pressure deficiency the time, its consequence is hardly imaginable especially.

Be with; Detection and warning device to tire pressure in going; Existing a lot of dealers drop into research and development, and this type patent is seen in case before patents such as bulletin No. 536489, No. 400811, No. 149143 No. 177543, No. 560445, No. 574977, No. 090946, No. 100539 and No. 396974.And in the preceding case of existing patent, can be divided into electronic type haply to detect and mechanical detection, wherein mechanical detector mostly is installed near the steel ring of outside tires, and it has the disappearance that exposes, and non-the utility model improvement purpose, holds and does not give unnecessary details.

As for, electronic type tire pressure detector, to press detector be main tire pressure detector is installed in the tire on the inside tires steel ring type again, and this type patent is seen in patents such as bulletin No. 404354, No. 578706 and No. 578707.The advantage of this kind kenel is that tire pressure detector is hidden in the tire and can directly records tire pressure; Its keystone configuration such as Fig. 1, shown in Figure 2; Comprise that one group of housing 11, is located at the detector circuit plate 12 in the housing 11, this circuit card 12 has a signal emitting antenna 13; And the battery 14 of two supply circuit plate 12 required power supplys, these housing 11 front ends connect a valve 15 in addition.When aforementioned component groups is dressed up tire pressure detector 10, then as shown in Figure 2, be fixed on the tire 20 in-to-in steel rings 21, and make valve 15 steel ring 21 that stretches through, utilize a pad 16 and a nut 17 fixing then, lock protecting cover 18 at last and accomplish assembling.

Aforementioned existing tire pressure detector 10 when it detects abnormal tyre pressure, sends signal by emitting antenna 13, is received by the receptor (not shown) of being located in the car, so as to learning abnormal tyre pressure.But look into when being used in all wire tyre, this emitting antenna 13 is positioned at tire 20, and tire 20 is to be formed by several layers of textural association; And full tire cladding steel wire loop band 22, be with, when wireless signal transmission; Can receive 22 pairs of electromagnetic waves generations of steel wire endless belt seriously covers; Or stopping of steel ring 21 and have a strong impact on the emission of signal, cause its accuracy and fiduciary level not good, for it does not improve part to the greatest extent.

Though; There is the dealer to attempt emitting antenna 13 is extended on the valve 15 outside the steel ring 21; But when being used in full type of wire form tire; Can't effectively transmit signals to outside the tire because of whole inner layer of tire makes the emission electric wave of type detector in the tire be subject to the Ferrari cage effect by the steel wire coating fully, this is still the problem that the interior type detector of present general existing tire can't effectively overcome normal transmission signal.

Be with, solve the problem points that transmits of type pressure detection device in the above-mentioned existing tire, be the major subjects that the utility model institute desire solves.

The utility model content

The utility model technical problem underlying to be solved is, overcomes the above-mentioned defective that prior art exists, and type pressure detection device in a kind of tire is provided; Its system for detecting tire pressure (Tire Pressure Monitoring System with inside tires; TPMS) the tire pressure signal that is detected passes the outside of steel ring through an antenna connection lead through valve, and utilizes the design of the insulation collar; Isolate the electrical conduction between valve main body and the outside valve according to this; Make whole outside valve be the independently emitting antenna that insulate, make it not produced by tyre rim or steel wire endless belt seriously to cover and influence the emission of signal, make the tire pressure detector body still be positioned at tire and can directly record tire pressure; And the ingenious utilization of emitting antenna is positioned at the insulation valve of outside tires; Effectively enhancing signal transmission efficiency and the receptor to the car of transmitting more accurately have the fiduciary level that promotes the detecting tire pressure, to promote the safety of using.

For reaching above-mentioned purpose, the technological means that the utility model adopted comprises:

Type pressure detection device in a kind of tire comprises:

One tire pressure detector, its body are located on the steel ring in the tire, are provided with the testing circuit plate of detecting tire pressure in this body;

One valve main body is made up of metal, is located at the front end of this tire pressure detector body; Its periphery is a thread; The sheathed leak-proof gasket of root, the outer section portion of this valve main body stretches through out after the perforation of tyre rim, fixes with a nut; And first through hole that its axial formation one runs through, and section portion outer end forms one first linking section outside this;

One antenna connection lead, its two ends this first through hole that stretches through out, and medial extremity is electrically connected at the antenna contacts of this testing circuit plate;

One outside valve; Constitute by metallic conductor; It is axially arranged with one second through hole, and medial segment first is connected section and forms one and can wear second of linking with it each other and be connected section with respect to this, and this second through hole is communicated with this first through hole; And be electric connection with the external side end of this antenna connection lead, and second through hole outside is provided with a valve bolt;

One insulation body; Has an axial hole; It is located at this and first is connected between section and the mutual interface of this second is connected section, isolates the electrical conduction between this valve main body and this outside valve according to this, in order to do making separate transmit antenna that does not receive this tire interference of this outside valve formation.

According to the above-mentioned characteristic of the utility model; A possible embodiments of installing this insulation body comprises: the internal diameter of this first linking section is greater than the external diameter of this second linking section; And this second be connected section stretch into this first be connected section an internal diameter, and this insulation body is fixed between this first linking section internal diameter and this second section of linking external diameter.

Type pressure detection device in the aforesaid tire, the lateral surface of the body that wherein insulate are provided with the flange body that a radial outward is extended.

Again; Another possible embodiments of installing this insulation body comprises: the external diameter of this first linking section is less than the internal diameter of this second linking section; And this first be connected section stretch into this second be connected section an internal diameter, and this insulation body is fixed between this first linking section external diameter and this second section of linking internal diameter.

Whereby, the utility model utilizes an insulation body, makes outside valve can be used as an emitting antenna independently; When its emission wireless signal; Wireless signal is not influenced by covering of tire or steel ring, makes the interior receptor of car can receive pressure detecting signal accurately, promotes the safety of driving.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is existing tire pressure detector exploded perspective scheme drawing.

Fig. 2 is existing tire pressure detector running condition reference diagram.

Fig. 3 is the exploded perspective scheme drawing of the utility model.

Fig. 4 is the combination schematic perspective view of the utility model.

Fig. 5 is the view sub-anatomy of the utility model.

Fig. 6 is the assembled sectional view of the utility model.

Another possible embodiments cutaway view of Fig. 7 unabridged version utility model.

Fig. 8 is the running condition reference diagram of the utility model.

Label declaration among the figure:

20 tires

21 steel rings

211 perforation

22 steel wire endless belt

30 tire pressure detectors

31 bodies

32 cover plates

33 through holes

34 testing circuit plates

341 antenna contacts

40 valve main bodys

41 leak-proof gaskets

42 nuts

43,43a first is connected section

44 threads

45 first through holes

50 insulation bodies

51 axial holees

52 flange bodys

60 outside valves

61 second through holes

62,62a second is connected section

63 valve bolts

70 antenna connection leads

71 medial extremitys

72 external side ends

Type pressure detection device in 80 tires

The A emitting antenna

The specific embodiment

At first, see also Fig. 3～shown in Figure 7, the 80 one of which preferred embodiments of type pressure detection device include in the utility model tire:

One tire pressure detector 30; Its body 31 is located on the steel ring 21 in the tire 20, and is as shown in Figure 7, is provided with the testing circuit plate 34 of detecting tire pressure in this body 31; And one antenna contacts 341 its with a system for detecting tire pressure (Tire Pressure Monitoring System; TPMS) circuit and IC are located on this testing circuit plate 34, but the non-the utility model patent of this TPMS purpose is held and do not given unnecessary details.

One valve main body 40 is made up of metal, and has enough mechanical strengths; It is located at the front end of this tire pressure detector body 31, and its periphery is a thread 44, the sheathed leak-proof gasket 41 of root; This valve main body 40 outer section portions stretch through out after the perforation 211 of tyre rim 21; Fix with a nut 42, and it axially forms first through hole 45 that runs through, and in this outside formation one first cohesive end 43 outside the section portion.

One antenna connection lead 70, its two ends this first through hole 45 that stretches through out, and medial extremity 71 is electrically connected at the antenna contacts 341 of this testing circuit plate 34.

One outside valve 60; Constitute by metallic conductor; It is axially arranged with one second through hole 61, and medial segment first is connected section 43 and forms one and can wear second of linking with it each other and be connected section 62 with respect to this, and this second through hole 61 is communicated with first through hole 45; And being electric connection with the external side end 72 of this antenna connection lead 70, these second through hole, 61 outsides are provided with a valve bolt 63 in addition.In a preferred embodiment; External side end 72 with antenna connection lead 70 is fixed on second through hole 61 in this outside valve 60 earlier earlier; And then behind this first through hole 45 that stretches through, be electrically connected at the antenna contacts 341 of this testing circuit plate 34 with medial extremity 71, and the back side of this tire pressure detector body 31 can be provided with a cover plate 32; After its wire joint line 70 completion on same day are fixing, again that cover plate 32 is fixing.And in preferred embodiment, this cover plate 32 is provided with more than one through hole 33, in order to detect the air pressure in the tire 20.But this through hole 33 does not limit and is located on this cover plate 32, and it also can be located on the body 31, as long as can detect air pressure.

Because aforesaid valve main body 40 must have certain mechanical strength, could lock on steel ring 21.Thus, if should directly be connected with this valve main body 40 by outside valve 60, then the two promptly forms electrical conduction; Through test result; Though this moment, this antenna connection lead 20 passed steel ring 21 by inside, and extended to outside valve 60, its effect is the same with antenna being placed in the tire 20.Trace it to its cause, and constantly test is found that if do not have and should isolate with this valve main body 40 by outside valve 60, then whole outside valve 60 still can receive the serious screening effect of tire 20 and steel ring 21, can't be effectively with transmitting away.

Be with, the main characteristic of the utility model,, be provided with an insulation body 50 at this outside valve 60 and these first through hole, 45 bonded assembly relative positions.In the present embodiment, this insulation body 50 has an axial hole 51, and it can be nested with the first linking section, 62 peripheries at this outside valve 60 after the independent moulding again, but is not limited to this.But be its also direct injection be coated on second of this outside valve 60 and be connected section 62 peripheries.In the present embodiment; The internal diameter of this first linking section 43 is greater than the external diameter of this second linking section 62; And this second be connected section 62 stretch into this first be connected section 43 internal diameter, and this insulation body 45 is fixed between these first linking section 43 internal diameters and these second section of linking, 62 external diameters.

Hold; This insulation body 50 can be made up of insulating materials such as rubber, plastics; And in a preferred embodiment; The external side end inner edge surface of first through hole 45 of this valve main body 40 is set as screw thread, close-fitting or trip, and the outer peripheral edges of this insulation body 50 of relative position are set as thread, close-fitting or the trip that can combine with it.And in the present embodiment, the flange body 52 that the lateral surface of this insulation body 50 is provided with a location usefulness is used to isolate valve main body 40 and outside valve 60, but is not limited to this.In the present embodiment, these flange body 52 radial outward are extended.

Again; Another possible embodiments of installing insulation body 50 is as shown in Figure 7; Its structure that is same as previous embodiment is represented with same reference numbers; It is characterized in that: this first be connected section 43a external diameter less than this second be connected section 62a internal diameter, and this first be connected section 43a stretch into this second be connected section 62a internal diameter, and this insulation body is fixed between this first linking section 43a external diameter and this second section of the linking 62a internal diameter.In view of the above, present embodiment has identical effect with above-mentioned enforcement, all can utilize this insulation body 50 to isolate valve main body 40 and outside valve 60.In the present embodiment, these flange body 52 radial inward are extended.

Because the valve main body 40 of the utility model utilizes non-metal insulation body 50 to be connected with outside valve 60; Its Joint strenght is perhaps not enough; Therefore the utility model is to utilize the above-mentioned second linking section 62 to stretch into this first linking section 43; Or first be connected section 43a stretch into this second be connected section 62a combination, make this insulation body 50 be connected coupling between the face of section, discovery after actual the test this first and second; Therefore the mechanical strength of this kind combined structure and general whole valve is similar, has outside valve 60 is combined closely with valve main body 40 and to reach the insulation purpose.

By above-mentioned technological means; The utility model combination back is like Fig. 6, Fig. 7, shown in Figure 8; The utility model will have valve now and be split up into two parts; Make it have a valve main body 40 and an outside valve 60, the electrical conduction that utilizes this insulation body 50 to isolate between this valve main body 40 and this outside valve 60 again is in order to do making this outside valve 60 form a separate transmit antenna A who not disturbed by this tire 20 or steel ring 21.Be with; Type pressure detection device 80 in the tire of the utility model, the function of its outside valve 60 and existing valve 15 are identical, but can become an emitting antenna A independently; The body 31 that makes tire pressure detector 30 still is positioned at tire 20 and can be directly and record tire pressure accurately; And emitting antenna A has extended to this outside valve 60 by this antenna connection lead 70, and the receptor to the car of can interference-freely transmitting makes and drives the tire pressure value that is obtained.

Hereat, the above-mentioned characteristic of the utility model is able to solve the problem points that existing tire pressure emitting antenna is covered or stops, has the detecting of lifting fiduciary level, promotes the effect of using.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Every technical spirit according to the utility model all still belongs in the scope of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did.

In sum; The utility model is on structure design, use practicality and cost benefit; It is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, has novelty, creativeness, practicality; The regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims

1. the interior type pressure detection device of tire is characterized in that, comprising:

One tire pressure detector, tool body are located on the steel ring in the tire, are provided with the testing circuit plate of detecting tire pressure in this body;

One insulation body; Has an axial hole; It is located at this and first is connected between section and the mutual interface of this second is connected section, isolates the electrical conduction between this valve main body and this outside valve according to this, makes separate transmit antenna that does not receive this tire interference of this outside valve formation.

2. type pressure detection device in the tire according to claim 1; It is characterized in that; Said first is connected the external diameter of the internal diameter of section greater than this second linking section; And this second be connected section stretch into this first be connected section an internal diameter, and this insulation body is fixed between this first linking section internal diameter and this second section of linking external diameter.

3. type pressure detection device in the tire according to claim 2 is characterized in that, the lateral surface of said insulation body is provided with the flange body that a radial outward is extended.

4. type pressure detection device in the tire according to claim 1; It is characterized in that; Said first is connected the internal diameter of the external diameter of section less than this second linking section; And this first be connected section stretch into this second be connected section an internal diameter, and this insulation body is fixed between this first linking section external diameter and this second section of linking internal diameter.

5. type pressure detection device in the tire according to claim 4 is characterized in that, the lateral surface of said insulation body is provided with the flange body that a radial inward is extended.