CN201549443U - Timer - Google Patents

Abstract

The utility model relates to a be applied to domestic appliance's timer, which comprises an outer shell, the knob cam, first electrode, second electrode and third electrode, first electrode lower extreme is connected with the first shell fragment one end of an L type, the first shell fragment other end is the free end, free end tip contact sets up with the contact of connection on second electrode lower extreme second shell fragment relatively, the free end middle part is equipped with takes bellied limit slider, be equipped with spacing draw-in groove on the knob cam, limit slider is protruding to be connected or break away from the buckle and be connected disconnection and the switch-on with the contact of control first shell fragment contact and second electrode lower extreme with spacing draw-in groove buckle in the rotatory in-process of knob cam, be equipped with switch toggle mechanism on the shell. When the user closes the cover but does not close the cover in place, the external force generated by the product, such as the cover closing force of the electric pressure cooker, directly acts on the switch toggle mechanism, and the inclined wedge surface of the switch toggle mechanism enables the contact at the lower end of the second electrode to move upwards to separate the two contacts from contact, so that the timer and the electric pressure cooker do not work, and the safety of the product is ensured.

Description

Timer

Technical field

The utility model relates to technical field of electric appliances, relates in particular to a kind of timer that is applied to household electrical appliance.

Background technology

Existing household electrical appliance such as electric pressure cooker, most pot cover pot bodies that adopt separate, and electrodynamic timer is as the frame mode of time control.Under this frame mode, put in place and be unlikely to produce potential safety hazard under the error situation of just cooking not closing lid in order to prevent the user, a lot of designers have adopted and have increased sensitive switch close the scheme that lid detects on the pot body.The cost of this scheme is 1, increases the cost of a sensitive switch and wire harness thereof, and 2, the user has lacked one does not have the cooking of pressure (electric chafing dish) function.

The utility model content

The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and a kind of reliable and safe timer that having concurrently of electric pressure cooker closed lid protection chain function that is applied to is provided.

The purpose of this utility model can reach by following measure:

This timer, comprise shell, knob cam in the enclosure is set, the shell upper end from left to right is provided with first electrode successively, second electrode and third electrode, be connected with regularly motor between second electrode and the third electrode, first electrode, second electrode and third electrode lower end are all stretched in the shell, the knob cam is connected with external knob, described second electrode is the output electrode that is connected with external circuit, described first electrode is an input electrode, its lower end is connected with a L type first shell fragment one end, the first shell fragment other end is a free end, this free end is positioned on the knob cam, described free end end is provided with the contact, this contact is oppositely arranged with the contact that is horizontally installed on second shell fragment of the second electrode lower end, described free end middle part is provided with the position limiting slide block of a band projection, the knob cam is provided with spacing draw-in groove, described position limiting slide block projection is connected or breaks away from buckle with described spacing draw-in groove buckle and connects to control the disconnection and the connection of first shrapnel contact and second shrapnel contact in knob cam rotary course, its special character is, also is provided with a switch toggle mechanism that is used to control this timer power on/off on the described timer.

The purpose of this utility model can also reach by following measure:

Described second shell fragment, one end is connected with the second electrode lower end, and this second shell fragment other end is the free end that stretches out to the right, and described second shrapnel contact is arranged on this second shell fragment free end and the first shrapnel contact relative position.

The described second shell fragment free end end upwards bends out an inclined-plane or cambered surface.

Shell is positioned at second electrode, one side sidewall upper and outwards is convexly equipped with a protruding tube; Described switch toggle mechanism is made of the T type depression bar of horizontal sleeve in described protruding tube axis hole, the spring that is set on the depression bar; The big first end of described depression bar is positioned at outside the side wall of outer shell, and spring is between big first end of depression bar and side wall of outer shell, and spring is set in protruding tube external peripheral surface near the side wall of outer shell end; The depression bar other end stretches in the shell, this other end end is provided with and the relative cammed surface step of the second shell fragment free end end chamfer, masterpiece is used under big first end of depression bar and the spring force effect outside, depression bar can slidably reciprocate in the protruding tube of side wall of outer shell, its cammed surface drive the second shell fragment free end move up and down with the contact of controlling first shrapnel contact and second shrapnel contact with separate.

The utility model has following advantage compared to existing technology: the switch toggle mechanism is set on the timer shell, closed lid the user, but close lid when not in place, external force that is produced by product such as electric pressure cooker close Gai Li and directly act on this switch toggle mechanism, driving the second shell fragment free end by depression bar moves up to cut off contacting of first shrapnel contact and second shrapnel contact, thereby timer and electric pressure cooker are not worked, guaranteed reliability of products and fail safe.

Description of drawings

Fig. 1 is the utility model timer initial condition structural representation.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, this timer that the utility model provides, compriseshell 10, be arranged on theknob cam 9 in theshell 10,shell 10 upper ends from left to right are provided withfirst electrode 1 successively, second electrode 2 andthird electrode 3, be connected with regularly motor between second electrode 2 and thethird electrode 3,first electrode 1, second electrode 2 andthird electrode 3 lower ends are all stretched in theshell 10,knob cam 9 is connected with external knob, second electrode 2 is the output electrode that is connected with external circuit,first electrode 1 is an input electrode, its lower end is stretched in theshell 10 and with a L typefirst shell fragment 6 one ends and is connected, first shell fragment, 6 other ends are free end, this free end is positioned on theknob cam 9, the free end end is provided with contact 8, this contact 8 is oppositely arranged withcontact 4 onsecond shell fragment 13 that is horizontally installed on second electrode, 2 lower ends, this free end middle part is provided with the position limitingslide block 7 of a band projection,knob cam 9 is provided with spacing draw-in groove, position limitingslide block 7 projectioies are connected or break away from buckle with spacing draw-in groove buckle and connect to control the disconnection and the connection of first shrapnel contact 8 and second shell fragment, 13contacts 4 inknob cam 9 rotary courses, also be provided with a switch toggle mechanism that is used to control this timer power on/off on the timer.

Second shell fragment, 13 1 ends are connected with second electrode, 2 lower ends, and its other end is the free end that stretches out to the right, and second shell fragment, 13contacts 4 are arranged on these second shell fragment, 13 free ends and first shell fragment, 6 contacts, 8 relative positions.In the present embodiment, second shell fragment, 13 free end ends upwards bend out an inclined-plane, and in other embodiments, these second shell fragment, 13 free end ends also can be cambered surface or do not bend.

The sidewall upper thatshell 10 is positioned at second electrode, 2 one sides outwards is convexly equipped with a circularcylindrical projection tube 12; The switch toggle mechanism is made of the T type depression bar 5 of horizontal sleeve in protrudingtube 12 axis holes, thespring 11 that is set on the depression bar 5; Depression bar 5 big first ends are positioned atoutside shell 10 sidewalls, andspring 11 is between depression bar 5 big first ends andshell 10 sidewalls, andspring 11 is set in protrudingtube 12 external peripheral surfaces near sidewall end; Depression bar 5 other ends stretch in theshell 10, this other end end is provided with and the relative cammed surface step in second shell fragment, 13 inclined-planes, under power effect outside and depression bar 5 big first ends and thespring 11 elastic force effects, depression bar 5 can slidably reciprocate in the protruding tube ofshell 10sidewalls 12, and drive second shell fragment, 13 free ends move up and down with the contact of controlling first shell fragment, 6 contacts 8 and second shell fragment, 13contacts 4 with separate.In the present embodiment, depression bar 5 big first ends are disc.In other embodiments, depression bar 5 big first ends also can be square or other shape.

Effect when the switch toggle mechanism is applied to electric pressure cooker in the present embodiment is: closed lid the user, but close lid when not in place, external force that is produced by product such as electric pressure cooker close Gai Li and directly act on this switch toggle mechanism, drive second shell fragment, 13 free ends by depression bar 5 and move up cutting off contacting of first shell fragment, 6 contacts 8 and second shell fragment, 13contacts 4, thereby timer and electric pressure cooker are not worked.

Operation principle of the present utility model is:

First electrode 1 and second electrode 2 must be connected the back timers can operate as normal; External force acts on depression bar 5 big first ends, by depression bar 5 other ends drive second shell fragment, 13 free ends move up and down the contact of controlling first shell fragment, 6 contacts 8 and second shell fragment, 13contacts 4 with separate, thereby control the break-make offirst electrode 1 and second electrode 2, reach the whether purpose of operate as normal of control timer.

As shown in Figure 1, timer is in initial condition, and theknob cam 9 on the timer does not rotate, and the projection of first shell fragment, 6 upperlimit slide blocks 7 is buckled in the spacing draw-in groove of knob cam 9.Knob on timer is outwarded winding and is set certain hour to timer, such as the heating time of setting voltage power pot, at this moment,knob cam 9 begins to rotate, the projection of first shell fragment, 6 upperlimit slide blocks 7 breaks away from the spacing draw-in groove ofknob cam 9,knob cam 9 outwards ejects the position limitingslide block 7 onfirst shell fragment 6,first shell fragment 6 is moved upward,contact 4 onsecond shell fragment 13 of second electrode, 2 lower ends contacts with the contact 8 onfirst shell fragment 6,first electrode 1 and second electrode 2 are connected, therefore, this moment, timer can be worked when the knob on the rotary timer.

As shown in Figure 1, timer is in initial condition, at this moment, if external force in shell of effect depression bar 5 big first ends, depression bar 5 slides inshell 10 along the protrudingtube 12 ofshell 10 sidewalls, the cammed surface step of depression bar 5 other end ends upwards ejects second shell fragment, 13 free end ends, at this moment, if the knob of rotary timer,knob cam 9 begins to rotate, the projection of first shell fragment, 6 upperlimit slide blocks 7 breaks away from the spacing draw-in groove ofknob cam 9, andknob cam 9 outwards ejects the position limitingslide block 7 onfirst shell fragment 6, andfirst shell fragment 6 is moved upward, because being driven by depression bar 5,second shell fragment 13 breaks away from initial position, contact 8 on theshell fragment 6 of winning can't be contacted withcontact 4 onsecond shell fragment 13, and therefore this moment,first electrode 1 and second electrode 2 can't be connected the timer cisco unity malfunction.At this moment, when external force is regained or depression bar 5 is imposed one during with front opposite effect power, under the elastic force effect and external force effect of spring 5, depression bar 5 slides outsideshell 10 sidewalls, second shell fragment, 13 free ends move down under the drive of depression bar 5 and are returned to initial position, make thecontact 4 onsecond shell fragment 13 contact,first electrode 1 and 2 conductings of second electrode, timer operate as normal with the contact 8 offirst shell fragment 6.

When the utility model timer is applied to electric pressure cooker, can be used in combination with the lid that closes of electric pressure cooker, it is the external force that imposes the switch toggle mechanism that electric pressure cooker is closed the masterpiece that produces when covering, reach thus and have only pot cover and pot body to buckle tooth to overlap area and reach the purpose that just began normal heating, normally boosts at 85% o'clock, can improve the safe application performance of electric pressure cooker.

The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.

Claims (4)

1. timer, comprise shell, knob cam in the enclosure is set, the shell upper end from left to right is provided with first electrode successively, second electrode and third electrode, be connected with regularly motor between second electrode and the third electrode, first electrode, second electrode and third electrode lower end are all stretched in the shell, the knob cam is connected with external knob, described second electrode is the output electrode that is connected with external circuit, described first electrode is an input electrode, its lower end is connected with a L type first shell fragment one end, the first shell fragment other end is a free end, this free end is positioned on the knob cam, described free end end is provided with the contact, this contact is oppositely arranged with the contact that is horizontally installed on second shell fragment of the second electrode lower end, described free end middle part is provided with the position limiting slide block of a band projection, the knob cam is provided with spacing draw-in groove, described position limiting slide block projection is connected or breaks away from buckle with described spacing draw-in groove buckle and connects to control the disconnection and the connection of first shrapnel contact and second shrapnel contact in knob cam rotary course, it is characterized in that, also be provided with a switch toggle mechanism that is used to control this timer power on/off on the described timer.

2. timer according to claim 1, it is characterized in that, described second shell fragment, one end is connected with the second electrode lower end, and this second shell fragment other end is the free end that stretches out to the right, and described second shrapnel contact is arranged on this second shell fragment free end and the first shrapnel contact relative position.

3. timer according to claim 2 is characterized in that, the described second shell fragment free end end upwards bends out an inclined-plane or cambered surface.

4. timer according to claim 3 is characterized in that, shell is positioned at second electrode, one side sidewall upper and outwards is convexly equipped with a protruding tube; Described switch toggle mechanism is made of the T type depression bar of horizontal sleeve in described protruding tube axis hole, the spring that is set on the depression bar; The big first end of described depression bar is positioned at outside the side wall of outer shell, and spring is between big first end of depression bar and side wall of outer shell, and spring is set in protruding tube external peripheral surface near the side wall of outer shell end; The depression bar other end stretches in the shell, this other end end is provided with and the relative cammed surface step of the second shell fragment free end end chamfer, masterpiece is used under big first end of depression bar and the spring force effect outside, depression bar can slidably reciprocate in the protruding tube of side wall of outer shell, its cammed surface drive the second shell fragment free end move up and down with the contact of controlling first shrapnel contact and second shrapnel contact with separate.

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