CN2422163Y - Tyre alarm device - Google Patents

Abstract

The utility model relates to a tire warning device, which is composed of a pump body, a pump core, a pressure spring, etc. When air pressure in a tire is short or air in the tire is leaked, the pressure spring which is originally compressed by high pressure is gradually released to push the pump core to move to communicate with a high pressure cavity and a low pressure cavity because air pressure in the pump body is reduced, and air flows for sounding a horn for sending warning sound. The utility model has the advantages of simple structure, convenient installation, and reliable performance.

Description

Tyre alarm

The utility model relates to a kind of annunciator, relates in particular to the tyre alarm that is used to protect motor vehicle tire.

At present, tyre alarm on the market has lead formula and electronic type, its principle of work all is at tire axle bridge place the ground wire that touches to be housed, when tire flat, the tire axle promptly reduces, the line that contacts to earth contacts with the earth, produce circuit ground and report to the police, but this warning has its defective place, be difficult for grasping during such as gas leakage, backguy is easily cut-off, and electronic warning is subject to external interference and reports by mistake, even vehicle is when handling goods, car stops up down and also often breaks annunciator, problems such as I applied for once that the patent No. was 972118438 and 992025524 annunciator, used through on the spot and also found to exist work dumb, and annunciator is poorly sealed.

The purpose of this utility model is the tyre alarm that provides on basis before this after a kind of the improvement, makes it be tending towards rationally reliable more at aspects such as structure, performances.

The purpose of this utility model is achieved in that

The utility model is made up of the pump housing, pump core, adjustment screw rod, stage clip and end cap; The inner chamber of the pump housing is formed chamfered transition between two sections inner chambers by different two sections of diameter; The pump core is the cylinder of band ladder, and one section thicker its diameter is slightly less than the diameter of the big inner chamber of the pump housing, and thinner one section, its diameter is with rubber gasket on this section pump core between the diameter of the large and small inner chamber of the pump housing; After stage clip was fixed on the small end of pump core, the end that stretches into stage clip in the path inner chamber of the pump housing had a friction copper sheet; The big opening end of the pump housing is by the end cap sealing that has into and out of tracheae; Adjust screw rod and stretch in the pump chamber, withstand the copper sheet of stage clip end by the osculum end; On the loculus section wall of the pump housing, an exit skirt is arranged.

Described in detail below in conjunction with accompanying drawing.

Fig. 1 is a structure diagram of the present utility model.

As shown in the figure:

The inner chamber of the pump housing 2 is made up of two parts that diameter does not wait, and pump core 7 is promptly inserted in the big inner chamber of the pump housing 2, and the big opening end of the pump housing 2 is by end cap 4 sealings, and adjustment screw rod 1 is screwed into by the osculum end of the pump housing 2, and withstands the stage clip 9 that is fixed on the pump core 7.

During work,, enter the inner tube of a tyre through deflation hole 6 then by 5 air inlets of the induction opening on the end cap 4, when tire inner tube air pressure was full, because gas pressure, pump core 7 obtained a power left, pump core 7 separates the big or small bore seal of the pump housing 2, and pump core 7 rightward space are identical with tyre cavity air pressure.Turn adjustment screw rod 1 then and make it to be fixed on a certain baroscale, this moment, stage clip 9 was compressed.

When inner tube of a tyre gas leakage or air pressure deficiency, pump core 7 right side air pressure reduce, and stage clip 9 is released, and pump core 7 is promoted to the right, and air promptly enters the little inner chamber of the pump housing from the perisporium of pump core 9, goes out along bellmouth orifice 3, blows loudspeaker, sends chimes of doom.

In order to guarantee the sealing effectiveness of pump core 7, on pump core 7, be with sealing rubber pad 8.

Adjusting between screw rod 1 and the stage clip 9 has movable copper sheet 10, when adjusting screw rod in order to prevent to rotate, and the stage clip distortion.

Owing to adopt above-mentioned measure, can understand tire flat or air pressure deficiency reliably, and the utility model is simple in structure, safe and reliable.

Claims (3)

1, a kind of tyre alarm by the pump housing, pump core, adjust screw rod, stage clip and end cap and form, is characterized in that: the inner chamber of the pump housing is formed chamfered transition between two sections inner chambers by different two sections of diameter; The pump core is the cylinder of band ladder, and one section thicker its diameter is slightly less than the diameter of the big inner chamber of the pump housing, and thinner one section, its diameter is between the diameter of the large and small inner chamber of the pump housing; Stage clip is fixed on the small end of pump core, and the end of stage clip has a friction copper sheet; The big opening end of the pump housing is by the end cap sealing that has into and out of tracheae; Adjust screw rod and stretch in the pump chamber, withstand the copper sheet of stage clip end by the osculum end; On the loculus section wall of the pump housing, an exit skirt is arranged.

2, tyre alarm according to claim 1 is characterized in that: be with sealing rubber pad on the pump core.

3, tyre alarm according to claim 1 is characterized in that: adjusting on the screw rod has scale, scalable stage clip pressure.

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