CN203363299U

CN203363299U - Safety valve linkage mechanism

Info

Publication number: CN203363299U
Application number: CN 201320332574
Authority: CN
Inventors: 谢启标; 李华登
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2013-12-25
Anticipated expiration: 2023-06-08

Abstract

The utility model discloses a safety valve linkage mechanism which comprises a cam and an elastic linkage piece, wherein the cam is arranged on a rotary shaft of a valve of a fuel gas cooker, and the elastic linkage piece is arranged between the cam and a safety electromagnetic valve. The elastic linkage piece comprises an elastic lever and an ejector rod, and one end, corresponding to the ejector rod, of the elastic lever is of an elastic piece structure capable of being locally deformed. When errors or abrasion exists between the ejector rod and a valve seat and enables sliding resistance of the ejector rod to be increased, the elastic piece structure is deformed and produces elastic buffering power, the included angle between the direction of the force which is between the elastic piece structure and the ejector rod and the axial direction of the ejector rod is gradually decreased and the elastic buffering power is gradually increased along with the deformation of the elastic piece structure, and the sliding resistance of the ejector rod is correspondingly decreased; when axial thrust is larger than the sliding resistance, the ejector rod abuts against and presses the safety electromagnetic valve in a sliding mode to start the safety electromagnetic valve, and then ignition is achieved, therefore, the influence of dimensional precision errors and abrasion on starting of the safety electromagnetic valve is reduced, normal ignition of the fuel gas cooker is ensured, reliability of the safety valve linkage mechanism is improved, and the service life of the safety valve linkage mechanism is prolonged.

Description

The Safety valve linking mechanism

Technical field

The utility model relates to a kind of Safety valve linking mechanism, particularly the linking mechanism between a kind of gas range valve and security solenoid valve.

Background technique

In order to improve the Security of household gas utensils, the household gas utensils of producing at present all have extinguish protection function, this extinguish protection function is realized by a security solenoid valve is installed on valve body usually, this security solenoid valve can be closed gas-entered passageway when the flame-out temperature of kitchen range reduces, yet when gas combustion range ignition, need between gas range valve and security solenoid valve, configure a linking mechanism, with the interim security solenoid valve of opening, realize igniting, at current linking mechanism on the market, normally in the rotating shaft of gas range valve, configure a cam, push up successively the pressure push rod by cam, lever, push rod, finally top presses off and opens security solenoid valve, but because lever is a rigid construction, and between push rod, be direct power transmission, there do not is buffering, and between lever and push rod, the direction of power neither be always and the push rod parallel to an axis, when the quality of fit of push rod and valve seat is not high or wearing and tearing occur, push rod there will be skew among a small circle, the slip resistance of push rod increases, even stuck, can't open security solenoid valve.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of link mechanism of gas cooker safety valve, this linking mechanism can trueness error reduced in size and wearing and tearing impact that security solenoid valve is opened, guarantees the normal ignition of gas-fired boiler, improves its reliability.

The utility model solves the technological scheme that its technical problem adopts:

The Safety valve linking mechanism, comprise the cam in the rotating shaft that is arranged on the gas range valve and be arranged on cam and security solenoid valve between the elasticity STATEMENT OF FEDERALLY SPONSORED, can realize the interlock of cam and security solenoid valve by this elasticity STATEMENT OF FEDERALLY SPONSORED.

Described elasticity STATEMENT OF FEDERALLY SPONSORED comprises a push rod that is articulated in the elastic lever on the valve seat of gas range valve and is arranged in valve seat and can reciprocatingly slides by pivot, be provided with flange on described cam, described elastic lever one end can be pressed to trigger by the flange of cam top and be rotated, the other end of described elastic lever is pressed on an end of push rod, the other end of described push rod top is depressed into the security solenoid valve front end, the end that described elastic lever is corresponding with push rod be one can local deformation elastic structure.

Described elastic lever is made by sheet metal, and the elastic structure of described elastic lever and push rod corresponding end is a shell fragment.

The shell fragment of described elastic lever and push rod corresponding end is a Pierced structure.

The shell fragment end of described elastic lever is provided with curved end.

Described push rod disposes a Returnning spring.

Described flange side is the inclined-plane that Radius increases gradually.

The beneficial effects of the utility model are: be provided with the elasticity STATEMENT OF FEDERALLY SPONSORED between the cam in the rotating shaft of gas range valve and security solenoid valve, the elasticity STATEMENT OF FEDERALLY SPONSORED comprises a push rod that is articulated in the elastic lever on the valve seat of gas range valve and is arranged in valve seat and can reciprocatingly slides by pivot, the end that elastic lever is corresponding with push rod be one can local deformation elastic piece structure, make the power transmission between elastic lever and push rod have certain buffering, and can there be certain elastic strain in the shell fragment on elastic lever, when having error or wearing and tearing between push rod and valve seat, make push rod produce skew among a small circle slip resistance while increasing, push rod is occurred and compresses and deform in shell fragment, and produce an elastic buffer power, distortion along with shell fragment, between shell fragment and push rod the direction of power and ejector rob axis to minimizing slowly and the elastic buffer power of angle increase gradually, and also reduce accordingly with the slip resistance of the minimizing push rod of angle, when end thrust is greater than slip resistance, push rod slides to push up and presses security solenoid valve, open security solenoid valve and realize igniting, thereby reduced the impact that dimensional accuracy error and wearing and tearing are opened security solenoid valve, guarantee the normal ignition of gas-fired boiler, improve its reliability, and extend the life-span of its use.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the overall structure schematic diagram of gas-fired boiler Safety valve;

Generalized section when Fig. 2 is the utility model unlatching security solenoid valve;

Fig. 3 is the generalized section of the utility model while not opening security solenoid valve;

Fig. 4 is internal structure schematic diagram of the present utility model;

Fig. 5 is the side view of cam of the present utility model;

Fig. 6 is the front schematic view of cam of the present utility model.

Embodiment

Referring to figs. 1 through Fig. 6, Fig. 1 to Fig. 6 is the structural representation of a specific embodiment of the utility model, as shown in the figure, the Safety valve linking mechanism, relate to the linking mechanism between a kind of gas range valve 1 and security solenoid valve 2, gas range valve 1 comprises valve seat 12 and valve body 5, security solenoid valve 2 is mounted in the valve body 5 of gas range valve 1, the Safety valve linking mechanism comprise the cam 3 in the rotating shaft 11 that is arranged on gas range valve 1 and be arranged on cam 3 and security solenoid valve 2 between the elasticity STATEMENT OF FEDERALLY SPONSORED, described elasticity STATEMENT OF FEDERALLY SPONSORED comprises that one is articulated in the elastic lever 41 on the valve seat 12 of gas range valve 1 and is arranged in valve seat 12 and the push rod 42 that can reciprocatingly slide by pivot 40, be provided with flange 31 on described cam 3, described push rod 42 disposes a Returnning spring 421, described elastic lever 41 1 ends can be pressed to trigger by flange 31 tops of cam 3 and be rotated, the other end of described elastic lever 41 is pressed on an end of push rod 42, the other end top of described push rod 42 is depressed into security solenoid valve 2 front ends, the end that elastic lever 41 is corresponding with push rod 42 be one can local deformation elastic structure.

In an embodiment, elastic lever 41 is made by the moulding of sheet metal integrated punching, and an end corresponding with push rod 42 is a Pierced structure at elastic lever 41, the elastic structure that makes elastic lever 41 and push rod 42 corresponding end is one to have elasticity shell fragment 411 that can local buckling, at the other end of elastic lever 41, forms a rigid ends 412.

When needs are lighted a fire, depress rotating shaft 11 and be rotated counterclockwise, band moving cam 3 rotates, the rigid ends 412 of the flange 31 top compression elasticity levers 41 of cam 3, make elastic lever 41 rotate around pivot 40, bar 42 bears down on one on shell fragment 411 tops of elastic lever 41 the other ends, when push rod 42 slides when smooth and easy, push rod 42 is moving to back down security solenoid valve 2 by shell fragment 411 jacking slidings, make blast tube open, after lighting a fire successfully, the thermocouple of heating security solenoid valve 2, generation current, make security solenoid valve 2 adhesives, guarantee often opening of blast tube, now, the operator can not depress rotating shaft 11, cam 3 is resetted, push rod 42 resets under the elastic force effect of Returnning spring 421, on top, do not press security solenoid valve 2, when rotating shaft 11, can be with movable valve plug 13 to rotate, long-pending with the opening section of controlling blast tube, realize regulating the effect of firepower, while stopping working when meeting accident, electric thermo-couple temperature reduces, security solenoid valve 2 is closed inlet flange 14 because current signal stops losing magnetic attraction, thereby cut-out blast tube, avoid the generation of dangerous accident, in the process of igniting, if push rod 42 increases because of skew the slip resistance that error or wearing and tearing produce among a small circle push rod 42, push rod 42 is occurred and compresses and deform in shell fragment 411, and produce an elastic buffer power, distortion along with shell fragment 411, between shell fragment 411 and push rod 42, minimizing slowly and the elastic buffer power of the axial angle of the direction of power and push rod 42 increase gradually, and also reduce accordingly with the slip resistance of the minimizing push rod 42 of angle, when end thrust is greater than slip resistance, push rod 42 slides to push up and presses security solenoid valve 2, open security solenoid valve 2 and realize igniting, thereby reduced the impact that dimensional accuracy error and wearing and tearing are opened security solenoid valve 2, guarantee the normal ignition of gas-fired boiler, improve its reliability, and extend the life-span of its use.

As shown in the figure, flange 31 sides of described cam 3 are the inclined-plane 311 that Radius increases gradually, while making rotating shaft 11 depress, the rigid ends 412 of elastic lever 41 can slide to flange 31 smoothly, guarantee unlatching smooth and easy of linking mechanism, and the rigid ends 412 of elastic lever 41 and shell fragment end be provided with curved end 413, reduce frictional force, and reduce wear, further guarantee that the gas-fired boiler Safety valve is opened smooth and easy.

Above better embodiment of the present utility model is illustrated, but it is not restricted to the utilization described in specification and mode of execution, it can be applied to the various fields of the present utility model that are applicable to fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limit with specific details and is illustrated here and the legend of describing.

Claims

1. Safety valve linking mechanism, it is characterized in that: comprise the cam (3) in the rotating shaft (11) that is arranged on gas range valve (1) and be arranged on cam (3) and security solenoid valve (2) between the elasticity STATEMENT OF FEDERALLY SPONSORED, can realize the interlock of cam (3) and security solenoid valve (2) by this elasticity STATEMENT OF FEDERALLY SPONSORED.

2. Safety valve linking mechanism according to claim 1, it is characterized in that: described elasticity STATEMENT OF FEDERALLY SPONSORED comprises that one is articulated in the elastic lever (41) on the valve seat (12) of gas range valve (1) and is arranged in valve seat (12) and the push rod (42) that can reciprocatingly slide by pivot (40), be provided with flange (31) on described cam (3), described elastic lever (41) one ends can be pressed to trigger by the flange of cam (3) (31) top and be rotated, the other end of described elastic lever (41) is pressed on an end of push rod (42), the other end top of described push rod (42) is depressed into security solenoid valve (2) front end, the end that described elastic lever (41) is corresponding with push rod (42) be one can local deformation elastic structure.

3. Safety valve linking mechanism according to claim 2, it is characterized in that: described elastic lever (41) is made by sheet metal, and described elastic lever (41) is a shell fragment (411) with the elastic structure of push rod (42) corresponding end.

4. Safety valve linking mechanism according to claim 3 is characterized in that: described elastic lever (41) is a Pierced structure with the shell fragment (411) of push rod (42) corresponding end.

5. according to the described Safety valve linking mechanism of claim 3 or 4, it is characterized in that: shell fragment (411) end of described elastic lever (41) is provided with curved end (413).

6. Safety valve linking mechanism according to claim 2, it is characterized in that: described push rod (42) disposes a Returnning spring (421).

7. Safety valve linking mechanism according to claim 2, it is characterized in that: described flange (31) side is the inclined-plane (311) that Radius increases gradually.