CN2552749Y

CN2552749Y - Vehicular warm-air switch

Info

Publication number: CN2552749Y
Application number: CN 02241308
Authority: CN
Inventors: 张海滨
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2003-05-28
Anticipated expiration: 2012-06-28

Abstract

The utility model discloses a warm air switch for vehicle, which is arranged in a connecting hose of a cycle cooling in the engine and a warm air radiator in the cab for opening or closing elimination of a heat system. The utility model is composed of a plastic casing (1), an upper cover (2) and a spool. A water feeding channel (5), an effluent channel (9) and an installing channel for the spool (4) communicated with each other are arranged in the casing. The utility model is characterized in that a ceramic spool (3) is adopted in the spool, and the spool is fixed in the installing channel of the casing by thread connection. The utility model has the advantages of solving internal and external leak of the pipeline caused by longitudinal shift and weak sealing performance because of unstable fixation of the spool in the prior art.

Description

Automobile-used heater switch

Technical field

The utility model relates to a kind of automobile-used heater switch, and it is installed in the connecting line of warm air radiator in cycle of engine cooling water expansion tank and the operator's compartment, and wherein effect is can open or close cooling system at any time when chaufeur needs.

Background technology

The automobile-used heater switch that existing loam cake by plastic casing and captive joint, spool are formed, its spool is to be fixed in the housing by a card and packing seal, its inner plastics and plastics, plastics and rubber fitted seal of adopting, reach the purpose of switching by the spool rotation, its poor sealing performance easily produces the pipeline internal leak.Again because inner seal is mainly plastic material, and plastics are stressed in the course of processing, Temperature Influence, its degree of precision error occurs because of the influence of plastic shrink amount, sealing member is easily produced to vertically move, again owing to have pressure in the pipeline, so seepage very easily occurs at the switch knob place, influence result of use.

Summary of the invention

The purpose of this utility model is for overcoming the deficiency of above-mentioned prior art, on the basis that does not change existing automobile-used heater switch profile and installation method, a kind of degree of precision height is provided, and good seal performance can not produce the automobile-used heater switch of problems such as the inside and outside seepage of pipeline.

For achieving the above object, technical solution of the present utility model is: a kind of automobile-used heater switch, comprise plastic casing, loam cake of captiveing joint and spool with housing, the water entry that has mutual circulation in the housing, water exit and spool are installed passage, it is characterized in that described spool is a ceramic valve core, described water entry and water exit middle upper portion are a water inlet chamber, passage is installed for the spool that is connected with chamber in its underpart, it is a tapped bore that spool is installed the passage bottom, the spool bottom is fixed on by screw thread and installs in the passage, and is tightly connected bottom upper surface and the chamber.

Because the ceramic valve core that the utility model adopts gauge member ceramic plate sealing water to chew, its degree of precision height, good seal performance, again owing to adopt the screw-tightened method that spool is fixed in the housing, thoroughly change vertically moving of being prone in the prior art, therefore overcome the inside and outside leakage problems in the pipeline.

Description of drawings

Fig. 1 is a cross-sectional view of the present utility model;

Fig. 2 is the birds-eye view of Fig. 1 when removing loam cake.

The specific embodiment

As shown in Figure 1 and Figure 2, this automobile-used heater switch is made up of housing 1 and the loam cake 2, the ceramic valve core 3 that are fixed on the housing 1.Have the water entry 5, water exit 9, water inlet chamber 8 and the spool 3 that are interconnected in the housing 1 passage 4 is installed, it is a tapped bore 10 that the passage bottom is installed, and spool 3 bottoms are fixed on by screw thread and install in the passage 4, and are tightly connected bottom upper surface and the chamber.When ceramic valve core 3 was in opening, current entered chamber 8 by water entry 5, and the through hole 7 through the chamber bottom flows in the ceramic valve core, enters water exit 9 through spool water outlet 6.When spool was in closed condition, current were blocked in chamber 8 and can't flow through.

Claims

1. automobile-used heater switch, it comprises plastic casing (1), loam cake of captiveing joint (2) and spool with housing, the water entry that has mutual circulation in the housing, water exit and spool are installed passage, it is characterized in that described spool is ceramic valve core (3), described water entry (5) is a water inlet chamber (8) with water exit (9) middle upper portion, passage (4) is installed for the spool that is connected with chamber in its underpart, it is a tapped bore (10) that spool is installed the passage bottom, the spool bottom is fixed on by screw thread and installs in the passage, and is tightly connected bottom upper surface and the chamber.