CN2179540Y

CN2179540Y - Gas cooking range timing switch

Info

Publication number: CN2179540Y
Application number: CN 93245312
Authority: CN
Inventors: 张国雄
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-15
Filing date: 1993-11-15
Publication date: 1994-10-12
Anticipated expiration: 2003-11-15

Abstract

The utility model relates to a timing switch for a gas cooking range. The prior art can only have a manual switch. The utility model organically combines a mechanical timer and a switch. A friction drum which is sheathed and fixed on a switch shaft and a corresponding friction spring which is positioned by a positioning lug of an upper cover are matched with an overdrive clutch. The overdrive clutch is composed of a timing shaft which is sheathed on the switch shaft, a drive gear and a ratchet wheel which are sheathed on the timing shaft. A group of drive gear pairs which are engaged with the drive gear, and the mechanical timer which is composed of an escape wheel are connected with each other. Therefore, the utility model has thecharacteristics of simple and reasonable structure, convenient use, high reliability, simple installation and maintenance, low cost, etc.

Description

Gas cooking range timing switch

The utility model relates to a kind of gas range gauge tap device, particularly can time-controlled switching device, belong to the cooking stove control device of gaseous fuel.

In recent years, because numerous manufacturers update, gas appliance has had significant progress at aspects such as flame adjusting, igniting, security and outward appearances, but yet there are no gas appliance and the corresponding time switch that can regularly close at home emerges, so the user is when thing such as cooking food, always necessary people is not from kitchen range, forget and in time close jet as busy leaving, little then food is hotted plate overdone, influence flavour, greatly then seriously burn and to eat, even cause major accidents such as fire, blast.

The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, can be installed in the gas range time switching device that has timing means in the gas appliance as common jet and provide a kind of.

The purpose of this utility model is finished by following technical solution, on the jet axle, be set with friction drum and be connected, there is torsion spring to link to each other on this friction drum with loam cake, being fixed on the adjacent setting with friction drum of the friction spring that covers also can contact with friction drum, one timing axle is sleeved on the switch shaft and its leading section can push against friction spring, regularly axle is provided with return spring, also be set with the travelling gear and the pawl wheel that cooperatively interact by interior ratchet and ratchet on it, pawl wheel is connected with the timing axle, its wheel hub arranged outside has the projection that matches with the caulking groove of drain pan central axis hole, also have clockwork spring to link to each other on the pawl wheel, between loam cake and drain pan, also be provided with the one group of gear pair and the escape wheel that match with travelling gear with drain pan.

The utility model is placed in friction spring in the interior circular hole of friction drum one side, and the former of friction drum is provided with deep-slotted chip breaker, the locating convex block location that cover setting of friction spring by passing from this deep-slotted chip breaker.

Timing axle leading section described in the utility model is coniform, and its circular cone inclined-plane is closely attached on the friction spring bottom.

The utility model is inserted in return spring on switch shaft, and the one end is against the inner face of friction drum, and the other end is against regularly on the inner face of axle.

Description of drawings is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the utility model friction drum and friction spring structural representation.

Fig. 3 is the utility model travelling gear and sour jujube pawl wheel Facad structure schematic diagram.

Fig. 4 is the utility model timing gear drive mechanism schematic diagram.

Fig. 5 is the schematic diagram that emphasis is represented pawl wheel right side projection and drain pan central shaft hole caulking groove.

Below will the utility model is further introduced by accompanying drawing:

The utility model mainly is made of switching device and mechanical timer, sees Fig. 1,2.By switch shaft 1, friction drum 2, torsion spring 3, friction spring 4 grades have been formed switching device, and friction drum 2 is sleeved on the switch shaft 1, and be fixedly connected by holding screw 5 and switch shaft 1, it is bearing on the loam cake 6 jackshaft hole walls, and an end hook of torsion spring 3 stays on the torsion spring fixture block 7 of loam cake 6, and the other end hooks in the torsional spring slot of friction drum 2, under the twisting force of this torsion spring, friction drum 2 is produced a reset torque.Offer deep-slotted chip breaker 8 on the disc of friction drum 2 one sides, the friction spring locating convex block length that the length of this deep-slotted chip breaker 8 covers on being adds jet by the length of zero-bit to the maximum radian that is turned over.Loam cake 6 is provided with friction spring locating convex block 9, passes the deep-slotted chip breaker 8 of this locating convex block 9 from friction drum 2, and can relatively move in deep-slotted chip breaker, and jet is positioned on zero-bit or the maximum position.Friction spring 4 projection 9 that is positioned is positioned in the interior circular hole 10 of friction drum 2 one sides, see accompanying drawing 2, this friction spring 4 is the butterfly shape, its both ends of the surface end that another flange point is sleeved on the timing axle 11 that can relatively rotate or relatively move on the switch shaft 1 that contacts with the interior circular hole wall of friction drum 2 is adjacent to, the end of this timing axle 11 is coniform, utilize its cone shape inclined-plane to push against friction spring 4 intermediate flange point left when pushing, the both ends of the surface in addition of compressing butterfly friction spring contact and produce frictional resistance with the inner peripheral surface of friction drum 2.Above-mentioned friction drum and friction spring have constituted a clutch, are similar to a friction clutch.

Mechanical timer is mainly by axle 11 regularly, and return spring 12, travelling gear 13, pawl wheel 14, clockwork spring 15, travelling gear such as pay at composition.Return spring 12 is inserted on switch shaft 1, and the one end is against on the inner face of friction drum 2, and the other end is against regularly on the inner face of axle, because regularly axle 11 kinks are on switch shaft 1, therefore regularly axle 11 is subjected to the spring force that this return spring moves right all the time.Regularly be set with travelling gear 13 and pawl wheel 14 on the axle 11, see accompanying drawing 3, travelling gear 13 kinks regularly can done relative motion on the axle, 14 of pawl wheels are fixedly connected by bayonet lock 16 and axle 11 regularly, the interior ratchet of travelling gear 13 and the ratchet of pawl wheel 14 cooperatively interact and have constituted a freewheel clutch, one end of clockwork spring 15 is fixed on the projection 27 on the drain pan 18, and the other end is enclosed within on the bayonet lock 16 of fixed pawl wheel 14.The wheel hub outside (right side) at pawl wheel 14 is provided with projection 17, it matches with caulking groove 19 on drain pan 18 central axis holes, when timing means is in zero-bit, projection 17 on the pawl wheel 14 is under the effect of return spring 12, move to right and be embedded in the caulking groove 19 on drain pan 18 central axis holes with axle 11 regularly, see Fig. 5, timing this moment axle 11 and pawl wheel 14 can not rotate relative to drain pan again, because regularly axle 11 moves to right, the former friction spring 4 that is pushed against and be subjected to the power of oppressing has lost the regularly compressing power that pushes against of axle 11, frictional force between friction spring 4 and the friction drum 2 just disappears, friction drum 2 drives friction drum 2 and is connected with it under the effect of torsion spring 3 switch shaft 1 rotation, and being located in original position (zero-bit), jet is in closed condition.The travelling gear that is meshed with travelling gear 13 is paid by

travelling gear

20,21,22 and escape wheel 23 and is formed, see accompanying drawing 4, they are bearing in drain pan 18 and the loam cake 6 corresponding axis holes respectively and intermesh, above-mentionedly constituted a mechanical type timing mechanism, the operation principle of its operation principle and mechanical clock is identical.At another axle head of axle 11 and switch shaft 1 regularly be fixedly connected respectively regularly handwheel 24 and switch handwheel 25.

When regularly axle 11 is advanced left by timing handwheel 24, because the regularly effect of axle 11 end-cone faces, under the situation of the spring force that overcomes return spring 12, push against the flange point of friction spring 4, compressing friction spring 4 is radially outwards pushed, the both ends of friction spring 4 and the inner peripheral surface of friction drum 2 are compressed, produce frictional force, being fixed on regularly on the axle 11 pawl wheel 14 and travelling gear 13 simultaneously also is moved to the left with axle 11 regularly, the projection 17 in the wheel hub outside of pawl wheel 14 shifts out from the caulking groove 19 on drain pan 18 central axis holes, regularly axle 11 can rotate, when needs are hotted plate for a long time, regularly axially anticlockwise, because it is very little that projection 27 distances are set on locating convex block 26 on the pawl wheel and the drain pan 18, regularly axle can only rotate a low-angle, at this moment decontrol regularly handwheel 24, projection 17 on the pawl wheel 14 withstands under the effect of return spring 12 power on drain pan 18 inner faces and can not return in the caulking groove 19, regularly axle 11 can not be return to the right, because the frictional force design load that is produced between friction drum 2 and the friction spring 4 is than the torsion big approximately 50% that resets of jet 3 pairs of friction drums 2 of torsion spring when the maximum open position, so when switch shaft 1 forwards any position (being that jet leaves to any position) to, torsion spring 3 all can not make jet recover zero-bit (being the Gas shutoff position), therefore, gas range can burn for a long time until hotting plate end, again with opening and closing handwheel 25 manual-locks.When the end user need leave, as long as regularly handwheel advances and rotates to the predetermined time (can label be installed on kitchen range represents) of hotting plate end left to the right, the axle respective angles of thereupon turning right regularly, timing spring is by pretension, under the clockwork spring effect, timing mechanism start working (regularly axially the maximum angle of turning right is 360 ° of angles that subtract angle that projection 26.27 changed and drain pan upper groove to projection 27), regularly axle revolution left gradually, until reaching the scheduled time, regularly axle recovers zero-bit, projection on the pawl wheel is aimed at the caulking groove 26 on the drain pan central axis hole, under the return spring effect, slip in the caulking groove, regularly axle is return to the right together with travelling gear and pawl wheel, friction spring is radially return to the center, and the frictional force between friction spring and the friction drum disappears, under the effect of torsion spring, jet is replied the closed position, and gas range stops the work of hotting plate.

The utility model is owing to use timing mechanism, can make the user needn't worry that food excessively hots plate or burn, improve the quality of food, also make the user feel convenient, safer, compared with prior art, have simple and reasonable for structure, easy to use, reliably, the characteristics such as not fragile, installation and maintenance maintenance is simple, cost is low, its mounting means is identical with general gas cooker switch, is beneficial to penetration and promotion, holds susceptible to user acceptance.

Claims

1, a kind of gas range time switching device that directly links to each other with the jet axle, it is characterized in that being set with friction drum (2) on the jet axle (1) and being connected, have torsion spring (3) to link to each other with loam cake (6) on this friction drum (2), the friction spring (4) that is fixed on the loam cake (6) also can contact with friction drum (2) with the adjacent setting of friction drum (2); One timing axle (11) is provided with return spring (12), also be set with the travelling gear (13) and the pawl wheel (14) that cooperatively interact by interior ratchet and ratchet on it, pawl wheel (14) is connected with timing axle (11), its wheel hub arranged outside has the projection (17) that matches with the caulking groove (19) of drain pan (18) central axis hole, pawl wheel (14) go up to also have clockwork spring (15) to link to each other with drain pan (18), also is provided with the one group of gear pair and the escape wheel (23) that match with travelling gear (13) between loam cake (6) and drain pan (18).

2, gas range time switching device as claimed in claim 1, it is characterized in that described friction spring (4) is placed in the interior circular hole of friction drum (2) one sides, the former of friction drum (2) is provided with deep-slotted chip breaker (8), locating convex block (9) location that friction spring (4) is provided with by the loam cake (6) that passes from this deep-slotted chip breaker (8).

3, gas range time switching device as claimed in claim 1 or 2 is characterized in that described timing axle (11) leading section is coniform, and its circular cone inclined-plane is closely attached on the bottom of friction spring (4).

4, gas range time switching device as claimed in claim 3 is characterized in that return spring (12) is inserted on switch shaft (1), and the one end is against the inner face of loam cake (6), and the other end is against on the inner face of friction drum (2).