CN2333085Y

CN2333085Y - Automotive thermal double-metal temp. control switch

Info

Publication number: CN2333085Y
Application number: CN 98221090
Authority: CN
Inventors: 王学亮; 仲伟全
Original assignee: CAR FAN CLUTCH FACTORY LONGKOU CITY
Current assignee: CAR FAN CLUTCH FACTORY LONGKOU CITY
Priority date: 1998-05-12
Filing date: 1998-05-12
Publication date: 1999-08-11
Anticipated expiration: 2008-05-12

Abstract

The utility model discloses a temp. control switch of an automobile engine. An inner cavity is composed of a casing body 1 and a plug body 6 which is connected with a plug, and one end of a movable contact head plug 9 is connected with a movable contact head arm 11 and a movable contact head 10; one end of a fixing contact head plug 8 which is corresponding to the movable contact head 10 is connected with a fixing contact head 7, and a guide seat 3 is fixedly installed at the inner cavity; a top rod 4 is movably penetrated through a hole in the guide seat 3; one end of the top rod 4 is contacted with thermal double-metal sheet 2 which is arranged at the inner cavity, and the other end is contacted with the movable contact head arm 11. Accurate temp. control and sensitive and reliable switch start-stop are realized.

Description

Thermo bimetal's automobile temperature detect switch (TDS)

The utility model relates to car accessories, is specifically related to a kind of control switch of automobile engine working temperature.

In automobile engine when work, is too high because of temperature, and piston (also the claiming scuffing of cylinder bore) phenomenon that rises extremely easily takes place.For reducing the working temperature of engine, automobile factory is provided with water tank at motor head usually, by the fan that is provided with water tank is cooled off then, to reduce the working temperature of engine; And the temperature detect switch (TDS) of Control of Automobile engine blower work, what adopt usually in the society is in the cavity of being made up of housing and the socket that is connected with plug, is provided with the swollen expansion device control piston of liquid and moves the keying that realizes temperature switch.It exists not enough: the one, and temperature drift is big, and temp control switch opens and closes insensitive; The 2nd, the swollen expansion device of liquid is subjected to the automobile engine Temperature Influence, and liquid easily leaks and wears out, and useful life is low.

The purpose of this utility model is to provide the automobile temperature detect switch (TDS) of a kind of temperature control sensitivity and long service life.

For achieving the above object, the technical solution of the utility model is: in the inner chamber that is made of housing and the socket that is connected with plug, its improvements are to be connected with movable contact arm at armature contact plug one end, and movable contact arm is provided with armature contact; Be provided with fixed contact with corresponding fixed contact plug one end of armature contact; Guide holder is packed in the inner chamber, and the push rod activity is in the guide holder mesopore; Push rod one end contacts with thrermostatic bimetal-plate in being located at inner chamber, and the other end contacts with movable contact arm.

Thrermostatic bimetal-plate is circular, and an end face is dish-shaped shape or an end face is the concave arc shape.

Because the utility model has adopted with the control structure of thrermostatic bimetal-plate as the automobile engine thermotonus, has realized the temperature precise control, the open-close on-off number of times has improved useful life still sensitive errorless more than 1,000,000 times.

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

Fig. 1 is the utility model sectional front view;

Fig. 2 be among Fig. 1 A-A to cutaway view;

Fig. 3 is thrermostatic bimetal-plate 2 sectional front views among Fig. 1;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is thrermostatic bimetal-plate 2 another kind of embodiment sectional front views among Fig. 1;

Fig. 6 is the vertical view of Fig. 5.

Embodiment 1, with reference to Fig. 1-Fig. 4.Housing 1 is to adopt the good copper product of thermal conductivity to make; Socket 6 is to adopt fire-retardant ABS material respectively armature contact plug 9 and fixed contact plug 8 to be injection molded into one.Armature contact plug 9 one ends are connected with the elasticity movable contact arm 11 made of phosphor bronze sheet preferably, and riveted has armature contact 10 on the movable contact arm 11; With armature contact 10 corresponding fixed contact plug 8 one end riveteds fixed contact 7 is arranged; Guide holder 3 is inlaid in the counterbore of housing 1, and push rod 4 activities are in guide holder 3 mesopores.When housing 1 and socket 6 were screwed, guide post 4 one ends contacted with thrermostatic bimetal-plate 2 end faces that are contained in housing 1 counterbore bottom, and push rod 4 other ends contact with movable contact arm 11.Thrermostatic bimetal-plate 2 is circular, and an end face is dish-shaped shape (shown in Figure 3).For entering moisture content in the inner chamber that prevents housing 1 and socket 6 formations, be provided with sealing ring 5 in its junction.

Operating principle is as follows: the utility model is screwed on the automobile engine, during initial condition, two gold plaque 2 (shown in Figure 1) the end face projectioies to the right that belong to of the heat of roudnel shape, promoting push rod 4 moves right, force between armature contact 10 and the fixed contact 7 on the movable contact arm 11 and separate, the automobile fan circuit disconnects, and automobile fan is in the state of quitting work.The working temperature that is provided with according to the automobile engine of different model, for example working temperature reaches 85 ℃, during the demand of auto engine cooling, thrermostatic bimetal-plate 2 right sides are heated to rise and are out of shape bounce-back, make its end face projection left, when push rod 4 is moved to left by the resiliency urged push rod 4 of movable contact arm 11, armature contact 10 and fixed contact 7 closures, the automobile fan circuit turn-on, automobile fan rotation carrying out radiating and cooling, when the automobile engine working temperature is cooled to 76 ℃, the reduction of the another kind of metal material Yin Wendu of thrermostatic bimetal-plate 2 left sides begins cold deformation and shrinks bounce-back to the right, be initial condition, armature contact 10 separates with fixed contact 7, and the automobile fan outage quits work.

Embodiment 2, Fig. 5-Fig. 6.Present embodiment with embodiment 1 different be thrermostatic bimetal-plate 2 for circular, an end face is the concave arc shape.

Claims

1. automobile temperature detect switch (TDS), comprise housing and the socket that is connected with plug, it is characterized in that: at housing (1) be connected with in the inner chamber that the socket (6) of plug constitutes, armature contact plug (9) one ends are connected with movable contact arm (11), and movable contact arm is provided with armature contact (10); Be provided with fixed contact (7) with corresponding fixed contact plug (8) one ends of armature contact (10); Guide holder (3) is packed in the inner chamber, and push rod (4) is movable in guide holder (3) mesopore; Push rod (4) one ends contact with thrermostatic bimetal-plate (2) in being provided with inner chamber, and the other end contacts with movable contact arm (11).

2. automobile temperature detect switch (TDS) according to claim 1 is characterized in that: thrermostatic bimetal-plate (2) is for circular, and an end face is dish-shaped shape.

3. automobile temperature detect switch (TDS) according to claim 1 is characterized in that: thrermostatic bimetal-plate (2) is for circular, and an end face is the concave arc shape.