CN202255680U

CN202255680U - Water temperature sensor

Info

Publication number: CN202255680U
Application number: CN2011203922652U
Authority: CN
Inventors: 周健; 韩伟
Original assignee: WUXI SHENGBANG ELECTRONICS CO Ltd
Current assignee: WUXI SHENGBANG ELECTRONICS CO Ltd
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-05-30
Anticipated expiration: 2021-10-14

Abstract

The utility model discloses a water temperature sensor which comprises a framework, a magnetic switch, a ground lug I, a thermistor, a ground lug II and a housing, wherein the framework is arranged in the housing, the ground lug II and the ground lug I are arranged on the framework, the ground lug II is electrically connected with the housing, the ground lug I is electrically connected with the ground lug II, the magnetic switch is arranged in the framework and electrically connected with the ground lug I, the other end of the magnetic switch is electrically connected with one terminal at two sides of the framework, the thermistor is arranged under the framework, one end of the thermistor is electrically connected with the other terminal at two sides of the framework, and the other end of the thermistor is electorally connected with the ground lug II. The thermistor is electrically connected with the housing together through arranging the ground lugs I and II without using a lead and a spring, thus the defect that the lead is broken or the thermistor is crushed is avoided, and the assembly process is simplified. The ground lugs are directly connected, thus the thermistor is effectively grounded and the reliability of measurement is ensured.

Description

A kind of cooling-water temperature sensor

Technical field

The utility model relates to sensor field, particularly, relates to a kind of cooling-water temperature sensor.

Background technology

At present; Cooling-water temperature sensor is widely used in the automobile cooling detection range; Existing cooling-water temperature sensor; Inner employing spring applies a pressure to heat-sensitive sheet and guarantees that heat-sensitive sheet contacts with the bonding of shell, through lead heat-sensitive sheet is connected with the transmission plug simultaneously, then through plug output temperature signal.The cooling-water temperature sensor of this kind structure is because of lead ruptures easily, so require all very high to pliability, the temperature tolerance of lead.In addition, the cooling-water temperature sensor of this kind structure need guarantee that not only thermistor follows shell reliably to contact, and need avoid because the excessive thermistor that causes of pressure is crushed, and is therefore also relatively strict to the requirement of spring.Thermistor and often loose contact of ground cause no signal output in actual manufacture process, and poor reliability can't satisfy the requirement of auto vendor.The cooling-water temperature sensor assembly technology of this structure is loaded down with trivial details in addition.

The utility model content

The purpose of the utility model is, to the problems referred to above, proposes a kind of cooling-water temperature sensor, and to realize avoiding wire fracture or thermistor crushed, reliability is low, equips simple advantage.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:

A kind of cooling-water temperature sensor comprises skeleton, magnetic switch, ground lug I, thermistor, ground lug II and shell, and said skeleton is installed in the enclosure; Its top and both sides are provided with terminal, are provided with bayonet socket above the terminal of said both sides, and the top of said bayonet socket is equipped with the ground lug II; Said ground lug II and shell are electrically connected, and said ground lug I is wrapped in the bottom of skeleton, are electrically connected with the ground lug II; Said magnetic switch is installed in the skeleton, and one of which end and ground lug I are electrically connected, and the other end is electrically connected with a terminal that is positioned at the skeleton both sides; Said thermistor be installed in skeleton below; The one of which end is electrically connected with another terminal that is positioned at the skeleton both sides, the other end and the electrical connection of ground lug II, said plug be arranged on skeleton above.

Further, above the ground lug II O-ring seal is installed, the outside of said ground lug I is set with heat-shrinkable T bush.

Further, the space between said skeleton and the shell is filled with heat-conducting silicone grease.

The technical scheme of the utility model does not re-use lead and spring through the ground lug I being set and the ground lug II links together thermistor and shell, has avoided the crushed defective of wire fracture or thermistor, has simplified assembly technology simultaneously yet.And adopt ground lug directly to connect, and guaranteed the effective grounding of thermistor, guaranteed measuring reliability.Through O-ring seal and heat-shrinkable T bush are set, can prevent the short circuit of internal wiring and the problems such as bad connection that cause because of vibration, further strengthened measuring reliability.And between the space between skeleton and the shell, be filled with heat-conducting silicone grease, with guarantee that skeleton can be more firm fixing in the enclosure.

Further feature of the utility model and advantage will be set forth in instructions subsequently, and, partly from instructions, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in the instructions of being write, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.

Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.

Description of drawings

Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of instructions, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:

Fig. 1 is the structural representation of the described a kind of cooling-water temperature sensor of the utility model embodiment;

Fig. 2 is the partial enlarged drawing at a kind of cooling-water temperature sensor I place shown in Figure 1;

Fig. 3 is the front elevation of skeleton in a kind of cooling-water temperature sensor shown in Figure 1;

Fig. 4 is the side view of skeleton in a kind of cooling-water temperature sensor shown in Figure 1.

In conjunction with accompanying drawing, Reference numeral is following among the utility model embodiment:

Wherein, 1-skeleton; The 2-O-ring seal; The 3-heat-shrinkable T bush; The 4-shell; The 5-magnetic switch; 6-ground lug I; The 7-heat-conducting silicone grease; The 8-thermistor; The 9-terminal; 10-ground lug II; The 11-bayonet socket.

Embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

As shown in Figure 1, a kind of cooling-water temperature sensor comprises skeleton 1, magnetic switch 5, ground lug I 6, thermistor 8, ground lug II 10 and shell 4; Skeleton 1 is installed in the shell 4, and its top and both sides are provided with terminal 9, is provided with bayonet socket 11 above the both sides terminal 9; It act as and prevents that ground lug from coming off from skeleton; The top of bayonet socket 11 is equipped with ground lug II 10, and 2 means of spot welds of ground lug II 10 and shell 4 are equipped with O-ring seal 2 together on ground lug II 10.Ground lug I 6 is wrapped in the bottom of skeleton 1, welds together with ground lug II 10, and the outside of ground lug I 6 is set with heat-shrinkable T bush 3.Magnetic switch 5 is installed in the skeleton 1; One of which end and ground lug I 6 weld together; The other end welds together with a terminal 9 that is positioned at skeleton 1 both sides, thermistor 8 be installed in skeleton 1 below, the one of which end is with another terminal 9 welding that are positioned at skeleton 1 both sides; The other end and ground lug II 10 weld together, and skeleton links together through flanging process and shell 4.Be filled with heat-conducting silicone grease 7 between the space between skeleton 1 and the shell 4.

Welding described in the technical scheme of the utility model is the welding on the electricity meaning, and promptly scolding tin links together the contact point of electronic component.

The technical scheme of the utility model does not re-use lead and spring through the ground lug I being set and the ground lug II links together thermistor and shell, has avoided the crushed defective of wire fracture or thermistor, has simplified assembly technology simultaneously yet.And adopt ground lug directly to connect, and guaranteed the effective grounding of thermistor, guaranteed measuring reliability.Through O-ring seal and heat-shrinkable T bush are set, can prevent the short circuit of internal wiring and the problems such as bad connection that cause because of vibration, further strengthened measuring reliability.And skeleton and shell between the space be filled with heat-conducting silicone grease, with guarantee that skeleton can be more firm fixing in the enclosure.

What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. cooling-water temperature sensor; Comprise skeleton (1), magnetic switch (5), ground lug I (6), thermistor (8), ground lug II (10) and shell (4), it is characterized in that said skeleton (1) is installed in the shell (4); Its top and both sides are provided with terminal (9); Be provided with bayonet socket (11) above the said both sides terminals (9), the top of said bayonet socket (11) is equipped with ground lug II (10), and said ground lug II (10) is electrically connected with shell (4); Said ground lug I (6) is wrapped in the bottom of skeleton (1); Be electrically connected with ground lug II (10), said magnetic switch (5) is installed in the skeleton (1), and one of which end and ground lug I (6) are electrically connected; The other end is electrically connected with a terminal (9) that is positioned at skeleton (1) both sides; Said thermistor (8) be installed in skeleton (1) below, the one of which end is electrically connected with another terminal (9) that is positioned at skeleton (1) both sides, the other end and ground lug II (10) electrical connection.

2. a kind of cooling-water temperature sensor according to claim 1 is characterized in that, O-ring seal (2) is installed above the said ground lug II (10), and the outside of said ground lug I (6) is set with heat-shrinkable T bush (3).

3. a kind of cooling-water temperature sensor according to claim 1 and 2 is characterized in that, the space between said skeleton (1) and the shell (4) is filled with heat-conducting silicone grease (7).