CN200953310Y

CN200953310Y - Pressure switch

Info

Publication number: CN200953310Y
Application number: CN 200620076667
Authority: CN
Inventors: 周太平
Original assignee: CHANGZHOU SENSTAR SENSOR Co Ltd
Current assignee: CHANGZHOU SENSTAR SENSOR Co Ltd
Priority date: 2006-09-30
Filing date: 2006-09-30
Publication date: 2007-09-26
Anticipated expiration: 2016-09-30

Abstract

The utility model discloses a pressure switch particularly suitable for automobile hydraulic power steering gear, which comprises a contact tube joint which can connect with an oil supply pipe of the hydraulic power steering gear and a socket in electricity, an elastic conducting film, a conducting film stand, a conducting pin, a conducting plug with a contact terminal, a distance piece, an insulating plug shell configured with a socket in matching and an insulating adhesion layer. The pin are fixed and connected with the plug which is fixed and connected with the plug shell; the plug shell is fixed and connected with the film stand which is positioned inside the pipe joint through the pipe joint's opened end; the film is positioned in between the plug shell and the pipe joint and is configured with the film stand in matching; the distance piece is positioned in between the film stand and the pipe joint and is propped and connected with the film; the insulating adhesion layer is sealed at the opened end of the pipe joint. The utility model is characterized in simple structure, small bilk and long service life.

Description

Pressure switch

Technical field

The utility model relates to a kind of pressure switch, is specifically related to a kind of surge pressure switch of power-assisted steering device of automobile that is specially adapted to, and belongs to the switch that is caused the film action by change in fluid pressure.

Background technology

The automobile power-assisted steering device that surges can alleviate the dynamics of driver's steering operation, makes steering operation light comfortable.

Prior art applicable to the surge pressure switch of power-assisted steering device overvoltage protection of automobile; such as the structure of disclosed publication number CN1595581A of Chinese patent and CN1307349A more complicated all; particularly because the electric switch assembly that it adopted; by fixed contact; the technical pattern that moving contact and reed moving contact arm are formed; thereby its production cost height not only; volume in kind is big; and under working condition; the reed of do action unavoidably can tired be surrendered; so that directly influence the correct do action number of times of prior art, promptly directly influence the effective practical time limit of prior art.

Summary of the invention

It is a kind of relatively simple for structure that the purpose of this utility model is to provide, and volume in kind is smaller, and the pressure switch that effective life is long is to overcome the deficiency of prior art.

The utility model realizes that the technical scheme that its purpose is taked is,

A kind of surge pressure switch of power-assisted steering device of automobile that is specially adapted to, its improvement is: by can with that the power-assisted steering device fuel feed pump is connected and the contact tube joint that can be electrically connected of surging, elastic conduction diaphragm, conducting film bar, the conductive base pin that can be electrically connected, conductive plug with contact with socket with socket, spacer can be formed with blind plug shell and insulating cement tack coat that socket is equipped with; Pin is fixedlyed connected with plug, plug is fixedlyed connected with jack shell, jack shell is fixedlyed connected with the diaphragm seat, the diaphragm seat is located in the pipe joint by the opening end of pipe joint, diaphragm is located between jack shell and the pipe joint and is equipped mutually with the diaphragm seat, spacer is located between diaphragm seat and the pipe joint and with diaphragm and is abutted against mutually, and the shutoff of insulating cement tack coat is at the opening end of pipe joint.

Can understand by above given technical scheme, the utility model is owing to done improvement at the existing included switch assembly of above-mentioned patent application, abandoned the version of fixed contact, moving contact and reed moving contact arm, employing is by the pipe joint that can be electrically connected with socket, and pin that can with socket be electrically connected fixedly connected and under the effect of oil circuit pressure dynamic change with plug, the electric switch assembly that is constituted by diaphragm action, thus realized the purpose of this utility model.Said elastic conduction diaphragm can be the elastic metallic diaphragm, but does not also get rid of the elastic conduction plastic film.The opening end of said pipe joint, treat that diaphragm seat and spacer are in place after, can the inside bending of its bead be pressed on the diaphragm seat by flanging process.

The further improvement of the utility model point is:

Pipe joint be can with pull quadrangle or the hexagonal tube joint that lathe turner's tool is complementary.Its purpose obviously is to make things convenient for the attaching of the utility model and oil line pipe.Here should be noted that when pipe joint is cylindric, can implement the attaching of pipe joint and oil line pipe with pipe vice.

Also has sealing ring; Pipe joint is provided with annular groove, and sealing ring is located in the annular groove.Its purpose obviously is to prevent the leakage of pressure oil.If being sealed and matched and the seal degree of spacer between diaphragm seat and the pipe joint, accomplishing to be enough to not can the build-up of pressure oil leakage, so, does not exist sealing ring also to be fine.

After technique scheme was implemented, what the utility model had was simple in structure, and volume in kind is little, and characteristics such as long service life are conspicuous.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the vertical view of Fig. 1.

Embodiment

Below contrast accompanying drawing, by the description of embodiment, the utility model is described in further detail.

A kind of typical embodiment is shown in accompanying

drawing

1,2.

A kind of surge pressure switch of power-assisted steering device of automobile that is specially adapted to, by can with that the power-assisted steering device fuel feed pump is connected and the metallic pipe coupling 1 that can be electrically connected of surging, stainless steel elastic conduction diaphragm 2, metal conductive film bar 3, the copper spare conductive base pin 4 that can be electrically connected, metallic conduction plug 5 with contact 5-1 with socket with socket, plastic barrier sheet 6 can be formed with ambroin jack shell 7 and epoxy resin insulating cement tack coat 8 that socket is equipped with; Pin 4 is fixedlyed connected with plug 5, plug 5 is fixedlyed connected with jack shell 7, jack shell 7 is fixedlyed connected with diaphragm seat 3, diaphragm seat 3 is located in the pipe joint 1 by the opening end 1-1 of pipe joint 1, diaphragm 2 is located between jack shell 7 and the pipe joint 1 and is equipped mutually with diaphragm seat 3, spacer 6 is located between diaphragm seat 3 and the pipe joint 1 and with diaphragm and is abutted against mutually, and 8 shutoff of insulating cement tack coat are at the opening end 1-1 of pipe joint 1.Pipe joint 1 be can with pull the hexagonal tube joint that lathe turner's tool is complementary.Also has rubber " O " RunddichtringO 9; Pipe joint 1 is provided with annular groove 1-2, and sealing ring 9 is located in the annular groove 1-2.

Switch force value of the present utility model can be guaranteed by the height of selecting diaphragm material therefor, its effective thickness and its round surface projection according to the rated operating pressure of the power-assisted steering device that surges.

The concise and to the point description of the utility model working condition is: when the oil feed line oil pressure reaches high limit pressure, pressure oil is by the oil through 1-3 of pipe joint 1, promote diaphragm 2 protuberances and be abutted against with the contact 5-1 of plug 5, just by pin 4 and pipe joint 1 by socket (not drawing among the figure) conducting electric current, the utility model promptly is in channel status.Otherwise when limit pressure was hanged down in oil feed line oil pressure decline arrival, diaphragm 2 restored and disconnects with plug 5, and the utility model promptly is in off-state.

The switch limit oil pressure value that this embodiment is set is respectively 1.65Mpa (opening) and 1.2Mpa (pass), with the operate as normal of the power-assisted steering device of guaranteeing to surge.

The utility model first sample effect of routine test voluntarily is good.Its every technical performance index is: operating voltage 9～15V.Operating current 20～30mA, environment for use-40 ℃～120 ℃, do action number of times＞1,000,000 time, the highest withstand voltage 14.7Mpa.

The restriction that the scope of application of the present utility model is not described by this specification.

Claims

1, a kind of surge pressure switch of power-assisted steering device of automobile that is specially adapted to, it is characterized in that: by can with that the power-assisted steering device fuel feed pump is connected and the contact tube joint (1) that can be electrically connected of surging, elastic conduction diaphragm (2), conducting film bar (3), the conductive base pin (4) that can be electrically connected, conductive plug (5) with contact (5-1) with socket with socket, spacer (6) can be formed with blind plug shell (7) and insulating cement tack coat (8) that socket is equipped with; Pin (4) is fixedlyed connected with plug (5), plug (5) is fixedlyed connected with jack shell (7), jack shell (7) is fixedlyed connected with diaphragm seat (3), diaphragm seat (3) is located in the pipe joint (1) by the opening end (1-1) of pipe joint (1), diaphragm (2) is located between jack shell (7) and the pipe joint (1) and is equipped mutually with diaphragm seat (3), spacer (6) is located between diaphragm seat (3) and the pipe joint (1) and with diaphragm (2) and is abutted against mutually, and insulating cement tack coat (8) shutoff is at the opening end (1-1) of pipe joint (1).

2, pressure switch according to claim 1 is characterized in that: pipe joint (1) be can with pull quadrangle or the hexagonal tube joint that lathe turner's tool is complementary.

3, pressure switch according to claim 1 and 2 is characterized in that: also have sealing ring (9); Pipe joint (1) is provided with annular groove (1-2), and sealing ring (9) is located in the annular groove (1-2).