SU940266A1

SU940266A1 - Tip of high-voltage wire for spark plug

Info

Publication number: SU940266A1
Application number: SU802986283A
Authority: SU
Inventors: Вадим Александрович Осипов; Вячеслав Максимович Луковкин
Original assignee: Научно-исследовательский и экспериментальный институт автомобильного электрооборудования и автоприборов
Priority date: 1980-07-15
Filing date: 1980-07-15
Publication date: 1982-06-30

Description

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Изобретение относитс к электрог технике, в частности к устройствам, обеспечивающим электрический контакт со свечами зажигани , например, дл двигателей внутреннего сгорани .The invention relates to electrical engineering, in particular to devices providing electrical contact with spark plugs, for example, for internal combustion engines.

Известен наконечник высоковольтно .го провода дл свечи зажигани , содержащий металлическийэкран, внутри которого закреплен пластмассовый корпус с электрическим контактом и уплот-to нительна втулка, установленна со стороны торца корпуса. Уплотнительна втулка изгтовлена из резины и прилегает к боковой поверхности керамического корпуса свечи зажигани , вл ю- is щейс базовой поверхностью. Другой конец уплотнительной втулки неразъемно закреплен на пластсмассовом корпусе наконечника путем закладывани , вулканизации или приклеивани . Гермет 20 тизаци соединени наконечника свечи осуществл етс за счет упругих свойств уплотнительной втулки СПОсновным недостатком известного наконечника вл етс его низкий,срок службы вследствие большой степени деформации материала уплотнительной . втулки при сборке и высокой рабочей температуры свечи зажигани .A known tip of a high-voltage spark plug wire, comprising a metal shield, inside which a plastic housing with an electrical contact and a sealing sleeve mounted on the side of the housing is fixed. The sealing sleeve is made of rubber and rests on the side surface of the ceramic body of the spark plug, which is a basic surface. The other end of the sealing sleeve is permanently fixed to the plastic body of the handpiece by laying, curing or gluing. Hermet 20 tiziatsiya connection of the tip of the candle is due to the elastic properties of the sealing sleeve. The main disadvantage of the known tip is its low, service life due to the high degree of deformation of the sealing material. bushings during assembly and high operating temperature of the spark plug.

Цель изобретени - увеличение срока службы наконечника высоковольтного провода.The purpose of the invention is to increase the service life of the high-voltage wire tip.

Поставленна цель достигаетс тем, что между уплотнительной втулкой и торцом корпуса размещен упругий элемент , а на внутренней поверхности экрана выполнены выступы, прилегающие к втулке и ограничивающие ее осевое перемещение относительно экрана.The goal is achieved by the fact that an elastic element is placed between the sealing sleeve and the end of the body, and protrusions are made on the inner surface of the screen, adjacent to the sleeve and limiting its axial movement relative to the screen.

Уплотнительна втулка может быть изготовлена из эластичного материала .The sealing sleeve may be made of an elastic material.

Claims

FIG. 1 shows a tip, a partial section; in fig. 2 - screen appearance; in fig. 3 tip mounted on spark plugs. 9 The tip has a metal screen 1, inside of which is located the case 2, made of an insulating material. Between the housing 2 and the screen 1 there is a sealing sleeve, ka 3i having the possibility of limited longitudinal movement. On the inner surface k of the screen 1, protrusions 5 are made adjacent to the sleeve 3 and limiting its axial movement relative to the screen 1. The lower part of the screen 1 is divided into safety constants 6. The electric contact is fixed in the housing 2. , which is a ring of elastic material. The elastic element 9 pushes the sleeve 3 against the protrusions 5 of the screen 1. The necessary force to press the sealing sleeve 3 can be provided by another type of spring element, for example, a spring washer installed between the sleeve 3 and the tip body. The connection of the tip with the spark plug is carried out as follows. The tip is put on the ignition plug 10, wherein the electrical contact 7 is connected to the contact 11 of the ignition plug 10. The petals 6 of the screen 1 tightly enclose the hexagon of the spark plug 12 due to their spring properties and provide an electrical connection of the screen with the mass, which is necessary to reduce radio fume. Put the tip on the candle until the sealing sleeve 3 is pressed against the base surface 13 of the spark plug, which is the end face of the hex. The other end 4 of the sealing sleeve is pressed against the ring 9. Thus, the sealing sleeve 3 is securely pressed against the base surface 13 of the spark plug 10 with some force. Due to the fact that the place of contact of the sealing sleeve is selected at the maximum distance from the electrical contact, and the water penetration is additionally protected by a labyrinth forming a hex protrusion; candles at the place of rolling the candle insulator, high tip life is ensured by increasing the degree of protection against water dropping, dust, etc. Claim 1. High-voltage wire tip for: a spark plug containing a metal shield inside which a plastic housing with an electrical contact and a sealing sleeve mounted on the side of the housing are attached, characterized in that, in order to increase service life, between the sealing sleeve and the end of the body is placed elastic element, and on the inner surface of the screen is made protrusions adjacent to the sleeve and limiting its axial movement relative to the screen.

2. The tip of claim 1, wherein the THING bushing is manufactured from an elastic material. Sources of information taken into account in the examination. To the Patent of the GDR If 97028, cl. 4bSZb pub. 1973.

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