CN1307350A - Timing switch - Google Patents

Abstract

The invention provides a time switch of novel structure which can be easily manufactured by compactly containing an electric motor along with a gear train in a case and can be simply constituted by eliminating an earth terminal at a housing of the electric motor, and which can gradually avoid harmful influence by each part for constituting the gear train and in which the electric motor along with gear train or the like can be contained in the case. In addition to an employment of a predetermined structure of plate motor, a predetermined structure of case made of non-conductive material is employed. An inside of the case is substantially divided into an area for containing the plate motor and an area for containing a power transferring system such as a gear train. Therefore, a simplification of structure and production workability can be improved by eliminating an earth terminal at the case.

Description

Timing switch

The present invention relates to be applicable to the timing switch of the electronic timer of microwave oven etc., relate in particular to the good new construction timing switch of the little assembly process process of volume.

Timing switch with timing contact of the electric wiring that carried out break-make along with the past of predefined time, be widely used in electrical equipment such as microwave oven for a long time, known wherein a kind of be the motor-type timing switch, it utilizes motor to drive can regulate the timing cam mechanism that sets limiting time to what timing contact carried out break-make.For example, the spy opens flat 3-78926 communique and the flat 3-98226 communique of Te Kai, and described contents such as special switch 11-204009 communique are exactly that this is a kind of.

And, in this timing switch, in order to reduce the power consumption of motor, and can set long limiting time, as also having narrated in the above-mentioned communique, between motor and timing cam mechanism, be provided with a kind ofly, the rotary driving force of motor be sent in the timing cam mechanism by this reducing gear train by the gear train of many reduction gearing to constituting.

But gear train is used in timing contact in the timing switch and timing cam mechanism and deceleration, in order to work steadily in the long term, generally is set at casing inside with the state of accommodating.On the other hand, motor is also described in above-mentioned communique, employing garden tubular syncmotor, its structure is as follows: utilize hollow garden made of iron dish type cover to constitute stator, coil is accommodated on the outer peripheral portion that is arranged in this cover, and, the middle body of the rotor arrangements that constitutes by permanent magnet in this cover.Because this motor volume is big, so, the general confined state that exposes to the housing exterior of timing switch that adopts.

But, the timing switch of this original structure, because the iron cover of motor directly is exposed on the external, so, in order to ensure safety, on cover, earth terminal must be set, there is complex structure, the problem that makes trouble.And, in the timing switch of original structure, must avoid the shell table side of adjusting knob of being provided with limiting time etc., with bolt etc. motor is fixed on the outside of shell inboard, therefore, must repeatedly turn over shell when assembling motor makes the inside outwards, so also have manufacturing operation trouble, time taking problem.

Moreover, in order to handle these problems, as mentioned above, also can consider garden tubular motor unit to be installed in the shell of timing switch with the state of accommodating.But the problem that exists is: if motor is accommodated in the shell that is provided with many gear trains, then shell enlarges markedly.Especially, in the timing switch of usefulness such as microwave oven, following two kinds of suitable structures are arranged: a kind of is to open as described in the flat 3-78926 communique as the spy, be provided with concurrently at a high speed with gear train and low speed gear train, and the speed switching mechanism is set, be used for its function either-or,, switch the actuating speed of the timing cam mechanism that adopts motor according to the set amount of the binding hours in the timing cam mechanism.Another kind of structure is: open as described in the flat 3-98226 communique as above-mentioned spy, the cycle contact that a kind of predetermined period of setting in according to the cycle cam mechanism carries out break-make is being set, utilize this cycle contact to make the equipment of magnetron etc. carry out work intermittently.If adopt this structure, then need the constitutional detail of more complicated a large amount of gear trains and clutch etc., and it need be accommodated in the shell, so, with the state of accommodating motor unit is installed in the shell, be very difficult from the space.

And, if motor is accommodated in the shell, then accommodated layout many gear trains and clutch etc. in the enclosure and gone up accompanying grease, and constitute this gear train, leave the electroconductive member of contact etc. of device and magnetic parts etc. motor is adversely affected.In addition, in the tubular motor of original large-scale garden, the caloric value that Joule heat brought of coil is very big, so, if motor is accommodated in the shell, then also may cause thermal diffusivity not good.

The present invention is that background proposes with above-mentioned situation, the purpose that addresses these problems is to provide a kind of like this timing switch of new structure, can accommodate motor and gear train etc. together makes volume reduce in the shell, assembly easily, and the earth terminal that does not need the cover of motor can simplified structure.

And, the invention provides a kind of one side and avoid constituting the harmful effect that various member produced of gear train etc. as far as possible, making motor and gear train etc. accommodate timing switch in the shell, new structure together on the other hand, also is the problem that will solve.

For the present invention that achieves the above object takes following technical scheme:

A kind of timing switch, wherein accommodated and be arranged in the non-conductive outer housing, the timing contact that is arranged in this shell is carried out timing cam mechanism break-make, that can regulate the setting timing, utilize drive motor, carried out work by accommodating the deceleration that is arranged in this shell with gear train, it is characterized in that:

Form the counter septum plate in the inside of above-mentioned shell and carry out clamping, be positioned at the 1st accommodating area and the 2nd accommodating area of its both sides, and, above-mentioned drive motor adopts a kind of so flat motor, wherein, magnetic pole at the stator that is made of the tabular magnetic material that coil has been installed forms in the portion, be provided with the rotor of having set many magnetic poles with permanent magnet outside on the face of garden, on the one hand this flat motor is accommodated and be arranged in above-mentioned the 1st accommodating area, on the other hand, above-mentioned deceleration accommodated with gear train and above-mentioned timing cam mechanism and timing contact be arranged in above-mentioned the 2nd accommodating area, and be provided with such travelling gear, it is crossed between above-mentioned the 1st accommodating area and the 2nd accommodating area, is used for the rotary driving force of this flat motor is delivered to this deceleration with in the gear train.

Described timing switch, it is characterized in that: above-mentioned deceleration comprises that with the formation of gear train the high speed that makes above-mentioned timing cam mechanism high speed motion is with gear train and the low speed gear train that makes this timing cam mechanism low speed action, and, be provided with the speed switching mechanism, it is according to the limiting time in the above-mentioned timing cam mechanism, select to make its work with gear train or low speed with gear train at a high speed, this speed switching mechanism is accommodated to be arranged in above-mentioned the 2nd accommodating area.

Described timing switch, it is characterized in that: be provided with cycle contact and cycle cam mechanism, promptly drive by above-mentioned flat motor, by the predefined cycle this cycle contact is carried out break-make, and above-mentioned cycle contact and cycle cam mechanism accommodated be arranged in above-mentioned the 2nd accommodating area.

Described timing switch, it is characterized in that: be provided with acoustic means, i.e. fixing call bell and make it be exposed to the outside on above-mentioned shell, and from the outwards outstanding member of ringing a bell that makes this calling bell ring that is provided with of this shell, and drive this member and make it and the break-make of above-mentioned timing contact is carried out interlock of ringing a bell, this acoustic means is accommodated be arranged in above-mentioned the 2nd accommodating area.

Described timing switch is characterized in that: above-mentioned shell is cut apart by following components and is formed:

The first opening casing is used to constitute the outer wall and the perisporium of above-mentioned the 1st accommodating area;

The second opening casing is used to constitute the perisporium of above-mentioned next door and above-mentioned the 2nd accommodating area; And

Lid is used to cover the opening portion of this second opening casing, constitutes the outer wall of above-mentioned the 2nd accommodating area.

Described timing switch is characterized in that:

Constitute said stator with a pair of plate body of cutting apart, this a pair of plate body is embedded in the medium pore of above-mentioned coil from axial both sides, fix mutually with this.

Described timing switch is characterized in that:

In above-mentioned flat motor short circuit portion from independent formation the magnetic pole formation portion, this short circuit portion is used for making the two side portions of the above-mentioned coil of said stator to carry out magnetic mutually and connects.

Described timing switch, it is characterized in that: utilize the pair of plate-shaped dividing body that makes up mutually from the axial both sides of above-mentioned coil to constitute said stator, be embedded in the medium pore of this coil from axial both sides this a pair of tabular dividing body, make its mutual coincidence, and axial end direction one side at this coil, this a pair of tabular dividing body positioned make it face one another face, so, form on the one hand above-mentioned magnetic pole formation portion, on the other hand at the opposite side of the axial end direction of this coil, this a pair of tabular dividing body is overlapped mutually, form above-mentioned short circuit portion with this.

Below be illustrated as the form of the present invention (mode) that addresses these problems and propose.And each inscape that is adopted in each form of following narration combination in any of can trying one's best is used.And, form of the present invention and technical characterictic be to be understood as into: and not only very in the content of following narration, but according to the content described in whole specification and the accompanying drawing, the perhaps content understood of the invention thought that can from these narrations, grasp according to the expert.

That is to say, the 1st form of the present invention is a kind of like this timing switch, it is accommodated is arranged in the dielectric shell, utilize drive motor, by accommodating the deceleration gear train that is arranged in this shell, drive and be used to make the timing contact that is arranged in this shell to carry out break-make, can regulate the timing cam mechanism of setting limiting time

This timing switch is characterised in that: formed in the inside of above-mentioned shell and separated by dividing plate and lay respectively at the 1st accommodating area and the 2nd accommodating area of dividing plate both sides, and, above-mentioned drive motor adopts a kind of so board-like motor, promptly the magnetic pole that constitutes stator by the tabular magnetic material that coil has been installed forms portion, arrange the rotor that utilizes permanent magnet on outer peripheral face, to set many magnetic poles correspondingly, in above-mentioned the 1st accommodating area, accommodated this flat motor of layout on the one hand; In above-mentioned the 2nd accommodating area, accommodate on the other hand and arranged above-mentioned deceleration gear train and above-mentioned timing cam mechanism and timing contact, and, be provided with a kind of like this travelling gear, promptly across between above-mentioned the 1st accommodating area and the 2nd accommodating area, be used for the rotary driving force of this flat motor is delivered to this deceleration with gear train.

In the timing switch that adopts this morphosis, by adopting flat motor, can utilize the cover of non-conductive outer housing as motor, therefore, no longer need the earth terminal on the motor cover, can simplified structure and raising anufacturability.And, form the 1st accommodating area and the 2nd accommodating area in the enclosure, in fact the accommodating area of flat motor is split from the accommodating area of gear train etc., therefore, the various members that also can as far as possible avoid constituting gear train etc. produce harmful effect to flat motor, can realize stable work.

And the non-conductive outer housing of this form is nonmagnetic substance preferably, for example preferably adopts plastic shells such as ABS resin.And, across between the 1st accommodating area and the 2nd accommodating area, by with reduction gear device interlock and revolving force is delivered to deceleration with the travelling gear on the gear train from flat motor mutually, for example also can utilize the pinion on the rotor rotating shaft that directly is fixed on flat motor to constitute.Also can constitute the pinion that is fixed on the rotor rotating shaft.Also can accommodate and be arranged in the 1st accommodating area being fixed on pinion on the rotor rotating shaft, utilize with this pinion mutually the reduction gearing of interlock constitute travelling gear.By adopting this reduction gearing,, all help guaranteeing the setting degree of freedom of the position of travelling gear in the 2nd accommodating area no matter the position that is arranged in the flat motor in the 1st accommodating area how as travelling gear.And, also can utilize the bolster of using as the reduction gearing of this travelling gear that the combining mechanism that reverses of preventing of flat motor is set, make it reduce volume, so also can improve the job stability of flat motor.And, adopt the flat motor of this morphosis, also can form the cooling air vent hole to the wall portion that generates the 1st accommodating area.And, adopt in the flat motor of structure of the present invention the rotating shaft of travelling gear and reducing gear train, timing cam etc., preferably with the rotating shaft parallel ground setting of the rotor of flat motor, like this, can improve the space availability ratio of accommodating area, further reduce volume.

Moreover, the 2nd form of the present invention, it is characterized in that: in the timing switch that adopts the 1st morphosis, the said gear system comprises that structurally the high speed that makes above-mentioned timing cam mechanism high speed motion is with gear train and the low speed gear train that makes this timing cam mechanism low speed action, and, a kind of deceleration switching mechanism is set, be used for limiting time according to above-mentioned timing cam mechanism, above-mentioned high speed is suitably selected a kind of with gear train and low speed with the function of gear train, above-mentioned deceleration switching mechanism accommodated be arranged in the 2nd accommodating area.According to this form, for example, the timing switch of in being used for microwave oven etc., the operating time being set, set amount according to the limiting time in the timing cam mechanism, actuating speed to the timing cam mechanism that utilizes motor is switched, like this, the high accuracy adjusting function when setting the casual labourer and do the time can be guaranteed on the one hand, the range of choice when setting the farm labourer and doing the time can be fully enlarged on the other hand.And, especially be arranged in the 2nd accommodating area in the shell with the speed switching mechanism of gear train comprising at a high speed with gear train and low speed, therefore, the various members and the harmful effect each other of flat motor of this deceleration switching mechanism can be avoided constituting as far as possible, stable work can be realized.

Moreover, the 3rd form of the present invention, it is characterized in that: in the timing switch that adopts the 1st or the 2nd morphosis, be provided with the cycle contact, and make this cycle contact carry out the cycle cam mechanism of break-make by the predefined cycle, and this cycle contact and cycle cam mechanism accommodated be arranged in above-mentioned the 2nd accommodating area by above-mentioned flat motor driven.According to such form, help realizing such electric energy by-pass cock etc., for example this switch is used in the microwave oven etc., the discontinuous operation time of change magnetron, regulates electric energy.Especially in cycle contact and cycle cam mechanism layout the 2nd accommodating area in the enclosure, like this, the various members and the harmful effect each other of flat motor of this deceleration switching mechanism can be avoided constituting as far as possible, stable work can be realized.

And, the 4th form of the present invention, it is characterized in that: in the timing switch that adopts the arbitrary morphosis described in the above-mentioned the 1st to the 3rd, be provided with a kind of like this acoustic means, promptly fixedly make it with respect to above-mentioned shell during call bell, be exposed to the outside, the member of ringing a bell that forms the tinkle of bells outwards protruded from this casing component, and this member of ringing a bell is activated mutually linkedly with the break-make of above-mentioned timing contact.This acoustic means accommodated be arranged in above-mentioned the 2nd accommodating area.In adopting the timing switch of this morphosis, utilize timing switch to be easy to constitute a kind of like this call bell, for example in microwave oven etc., be used to circulate a notice of setting-up time and arrived end-of-job etc.Especially bell is fixed on the outside of dielectric casing component, like this, helps guaranteeing electric independence, make the metallicity call bell can fully guarantee electric stability with respect to accommodating the flat motor that is arranged in the casing component, easy to use again.

And, the 5th form of the present invention, it is characterized in that: in the timing switch of each the described morphosis in adopting the above-mentioned the 1st to the 4th, the structural member that forms above-mentioned shell is divided into following 3 parts: constitute the outer wall of above-mentioned the 1st accommodating area and the first opening casing of surrounding wall, constitute above-mentioned next door and above-mentioned the 2nd accommodating area surrounding wall the 2nd opening casing and cover the opening portion of the 2nd opening casing and constitute the lid of the outer wall of above-mentioned the 2nd accommodating area.

In the timing switch that adopts this morphosis, utilize simple structure can form shell at an easy rate with the 1st and the 2nd accommodating area, especially with respect to the assembling of flat motor of the 1st opening casing etc., with respect to the assembling of the 2nd opening casing of the 1st opening casing and with respect to the assembling of gear train of the 2nd opening casing etc., all can carry out successively from the same side, so, can further improve the manufacturability of manufacturing.

Moreover, the 6th form of the present invention, it is characterized in that: in the timing switch of each the described morphosis in the above-mentioned the 1st to the 5th, utilize a pair of plate body of cutting apart to constitute said stator, this a pair of plate body is embedded into from axial both sides in the medium pore of above-mentioned coil, carries out fastened to each other with this.In the timing switch that adopts this morphosis, utilize simple structure to be easy to form flat motor, like this, can further simplify the structure of timing switch, improve its manufacturability.Especially, cut apart in the chimeric medium pore that is fixed on the coil that forms by bobbin etc. of plate body, can improve the assembling operation of cutting apart plate body like this, can further improve the manufacturability of flat motor and timing switch a pair of.And a pair of plate body of cutting apart is also in position gone up and is suitably positioned fixing with respect to shell except that the chimeric position in the coil medium pore.Cutting apart plate body and can adopt any tabular component that is made of strong magnetic materials such as iron in this form for example, preferably adopted tabular component that becomes suitable form with the punching out of punch process mode etc.

Moreover, the 7th form of the present invention, it is characterized in that: to adopting the timing switch of each the described morphosis in the above-mentioned the 1st to the 6th, in above-mentioned flat motor, the two side portions of the above-mentioned coil in the said stator is carried out the short circuit portion that magnetic connects mutually, independent independent formation from above-mentioned magnetic pole formation portion.

In this form, utilize the short circuit portion of independent independent formation from magnetic pole formation portion, the axial two side portions of the coil in the support is connected to each other, like this, can avoid the magnetic pole that produces in the magnetic pole formation portion and the rotary driving force of rotor are caused harmful effect as far as possible, the inductance of coil itself be can increase again, electrical current, the also Joule heat that can suppress to produce suppressed, so, help avoiding when packing shell into, producing cause thermal damage.And, by reducing the number of turns of coil, can make coil and motor realize miniaturization, simultaneously, the incidence of the waste products that fault caused such as the broken string when also reducing coil-winding.In addition, also can also omit other parts such as capacitor of the energising flow that is used to suppress coil.So, can further reduce number of spare parts and simplified structure.And, in this form, so-called " independence ", be meant " magnetic pole formation portion is not included in the part of magnetic circuit of short circuit portion, but formation in addition ".For example, utilize the formation of carrying out branch to the position of magnetic pole formation portion from core part to form short circuit portion, can realize independence.And with respect to coil, the formation position of magnetic pole formation portion and short circuit portion there is no particular restriction, for example, also can be formed on coil an axial side or with the positions such as a side of axis normal direction on.

Moreover, the 8th form of the present invention, it is characterized in that: in the timing switch that adopts the 7th morphosis, the pair of plate-shaped dividing body that utilization is made up mutually from the axial both sides of above-mentioned coil constitutes the stator of above-mentioned flat motor, be embedded into this a pair of tabular dividing body in the centre bore of this coil from axial both sides, make its mutual coincidence, simultaneously, side in the axial end direction of this coil makes this a pair of tabular dividing body face one another face, form above-mentioned magnetic pole formation portion with this, on the other hand, this a pair of tabular dividing body is overlapped mutually, form above-mentioned short circuit with this at the opposite side of the axial end direction of this coil.

In the timing switch that adopts the 8th morphosis, utilize less part and simple structure, can form the stator of flat motor at an easy rate.And, make magnetic pole formation portion and short position both sides in clamping coil on the axial end direction, can fully reduce to accommodate the height dimension of the 1st accommodating area of flat motor like this, simultaneously, utilize the more effectively generation magnetic field of concentrating coil of short circuit portion, thereupon, can more successfully suppress leakage flux, successfully improve the inductance of coil itself, can suppress electrical current.

And, in this form, as the pair of plate-shaped dividing body, for example in vertical two end portions of the cardinal principle core and the rectangular plate-like portion of rectangular plate-like portion, suitable employing forms the tabular dividing body of an integral body respectively to the outstanding protuberance of opposite direction (plate width direction), like this, be inserted into the protuberance of the cardinal principle core of this rectangular plate-like portion in the centre bore of coil from both sides, make its mutual coincidence, form core part with this, the protuberance of a vertical end is overlapped mutually, form short circuit portion with this; Further the protuberance of the other end leaves at interval longitudinally, faces one another face, can form magnetic pole formation portion with this.Overlap at the protuberance that makes the pair of plate-shaped dividing body like this, when forming core part and short circuit portion, be preferably in the step that forms between a side center protuberance of rectangular plate-like portion and the protuberance that magnetic pole formation portion uses with the corresponding height of thickness of slab, like this, can make two protuberances of magnetic poles formation portion face-to-face on identical substantially plane.And, by the formation position of the core part in the above-mentioned pair of plate-shaped dividing body is embedded in the centre bore of coil, also can under the state that is connecting airtight on the direction that overlaps mutually, fix, like this, the centre bore of coil is used for the combination of tabular dividing body, and fixing for tabular dividing body can increase combined strength, and, can assemble tabular dividing body at an easy rate with simple structure.

Effect of the present invention:

As can be seen from the above description: in the timing switch that adopts structure of the present invention, except that the flat motor that has adopted ad hoc structure, also adopted the shell of leading the ad hoc structure that the do as one likes material constitutes by non-, in this shell, divide the accommodating area of the accommodating area formed flat motor and gear train etc. in fact, therefore, do not need as the earth terminal in the shell of motor cover, simplify the structure, improved manufacturability, simultaneously, the various members that can as far as possible avoid constituting gear train etc. cause harmful effect to flat motor, can stably work.

Below embodiments of the present invention will be described in detail with reference to the accompanying drawings:

Fig. 1 is the front elevation that expression has the operating unit of using as the microwave oven of the timing switch of one embodiment of the present of invention.

Fig. 2 is the left surface figure of Fig. 1.

Fig. 3 is the assembling instruction figure of operating unit shown in Figure 1.

Fig. 4 is the decomposition key diagram of the drive system of timing switch shown in Figure 1.

Fig. 5 is the assembling exploded view of the flat motor that adopted in the timing switch shown in Figure 1.

Fig. 6 is the oblique view of flat motor shown in Figure 5.

Fig. 7 is the Assembly Instruction Device figure of the casing component in this example.

Fig. 8 is the plane graph that the shell of expression flat motor shown in Figure 5 is accommodated state.

Fig. 9 is the front elevation of the part breach among Fig. 8.

Below, for the ease of understanding the present invention particularly,, describe in detail of the present invention with reference to accompanying drawing

Embodiment.

At first in Fig. 1～2, express operating unit 12, wherein have the timing switch 10 that the microwave oven that adopts structure of the present invention is used, simultaneously, in Fig. 3, express the assembling instruction figure of this operating unit 12 with front elevation and side view.In this operating unit 12, timing switch 10 is assembled on the fixed panel 14 on the microwave oven main body, simultaneously, the timer shaft 16 and the cycle timer axle 18 in limited time of this timing switch 10 are rotated operation by cooking time set knob 20 and electric energy adjusting knob 22 respectively.And, by regulate the timer in limited time of timing switch 10 with cooking time set knob 20, can set the cooking time of microwave oven, simultaneously, by regulate the cycle timer of timing switch 10, the i.e. electric energy of scalable microwave oven with electric energy adjusting knob 22.And the cycle timer axle 18 of timing switch 10 is rotated by rotary manipulation axle 26 drives that electric energy adjusting knob 22 has been installed by the tooth bar 24 that is arranged between timing switch 10 and the fixed panel 14.

The timing switch 10 of present embodiment, more detailed situation as shown in Figure 4, the contact that break-make is carried out in the power supply of the magnetron that subtend is not shown has following two kinds: a kind of is interval contact 28, and it is used to determine the cooking time as master switch; Another kind is a cycle contact 30, and it is used to regulate the discontinuous operation time of no illustrated magnetron in the cooking time as cycle switch, decision electric energy (power).And contact 28 is only just drawn back when the timer shaft 16 of prescribing a time limit arrives the initial rotation positions and is become dissengaged positions in limited time.Along the arrow directions X timer shaft 16 of prescribing a time limit is carried out rotating operation, can make contact 28 closures in limited time, beginning is to no illustrated magnetron power supply, simultaneously, also begin to flat motor 32 power supplies as drive motor, timer shaft 16 is rotated according to the direction opposite with direction of operating to utilize flat motor 32 to make in limited time, during before timer shaft 16 turns back to the initial rotation position in limited time, promptly with the rotating operation amount of timer shaft 16 in limited time in the corresponding time, do not have illustrated magnetron and be in running status.And, cycle contact 30, the pairing specific time interval of position of rotation according to the cycle timer axle of setting by the rotary manipulation of rotary manipulation axle 26 (referring to Fig. 3) 18 carries out on-off action repeatedly, position of rotation by suitable change setting cycle timer shaft 18, can continue maintenance under the state of flat motor 32 power supplies, only make the power supply of not having illustrated magnetron is carried out continuously or intermittently, in fact make the position of rotation of no illustrated magnetron according to cycle timer axle 18, promptly the pairing time scale of being set by rotary manipulation axle 26 of position of rotation is carried out work, and electric energy is regulated.

At this, adopt in limited time the set mechanism of the cooking time of timer shaft 6 and the electric energy governor motion that adopts cycle timer axle 18, its deceleration that constitutes the gear train of usefulness and comprise clutch and cam mechanism etc. can be adopted disclosed well-known mechanism in for example special fair 7-101586 communique etc. with the power drive system 33 of gear train, below is illustrated simply.

That is to say, in Fig. 4, express a kind of power drive system 33, comprising following gear train and clutch, cam mechanism etc., this gear train is used to constitute cooking time set mechanism that adopts the timer shaft 16 of prescribing a time limit and the electric energy governor motion that adopts cycle timer axle 18.Transfer timer portion 36 and these work systems all clearly to illustrate as the timer portion 34 in limited time of the timing cam mechanism that the contact of prescribing a time limit is carried out break-make, the cycle cam mechanism of break-make is carried out in conduct to the cycle contact electric energy.

At this, timer portion 34 in limited time is described at first.In limited time timer portion 34 has to be fixed on cooking time set knob 20 and is rotated the mainshaft gear 38 on the main shaft 16 of operation and is installed in the cam 40 of counterrotatingly prescribing a time limit on the main shaft 16.And the timing contact 28 that is made of fixed contact plate 42 and movable contact plate 44 is arranged in limited time near the cam 40, under the conducting state of these timing contact 28 closures, to no illustrated magnetron energising, switches on to flat motor 3.Under the dissengaged positions that timing contact 28 draws back, stop energising to said two devices.Between timing cam 40 and timing contact 28, be provided with timing cam bar 46, and it can be swung around single shaft.And, the outer garden face of the leading section of this timing cam bar 46 and timing cam 40 carries out sliding contact, be positioned at timing cam bar 46 under the state of initial position, timing cam bar 46 enters in the small diameter portion of timing cam 40, move to sowing discord direction from timing contact 28, if manually rotate timer shaft 16 in limited time, then the leading section of timing cam bar 46 rises on the major diameter part of timing cam 40, movable contact plate 44 is pressed on the fixed contact plate 42, so, these two contact panels 44, electric contact closure between 42, and, manually rotate timer shaft 16 in limited time by measuring in accordance with regulations, can make flat motor 32 begin action, this rotary driving force is delivered on the mainshaft gear 38 by gear train, so timing cam 40 is driven, move to initial position, its direction is with manually direction of rotation is opposite, and in the time before timing cam 40 turns back to initial position, magnetron is in running order.

Moreover, the rotary driving force of flat motor 32 is delivered to the gear train that the timer shaft 16 in limited time that is manually turned gets on, adopted at a high speed with gear train 48 and low speed gear train 50, these two gear trains 48,50 are switched by switching mechanism 52, position of rotation according to the timer shaft 16 of prescribing a time limit, select one of them to carry out work, so with output gear 56 on the output shaft 54 that is fixed on flat motor 32 interlock and the travelling gear 58 that is driven in rotation mutually, its rotary driving force is delivered on the mainshaft gear 38 of the timer shaft 16 of prescribing a time limit by the speed reducing ratio of using at a high speed or low speed is used, and makes timing cam 40 spinning movements.With the output gear 56 of flat motor 32 mutually the travelling gear 58 of interlock have gear wheel 60 and the pinion 62 that on same axle, forms an integral body, by gear wheel 60 and output gear 56 mutually interlock constitute reduction gear.

Illustrate that below these are at a high speed with gear train 48 and low speed gear train 50.

Constitute by 72 and No. 6 wheels 74 of 70, No. 5 wheels of 68, No. 4 wheels of 66, No. 3 wheels of 64, No. 2 wheels of No. 1 wheel with gear train 48 at a high speed.And low speed is made of 72 and No. 6 wheels 74 of 70, No. 5 wheels of 76, No. 4 wheels of 68, No. 7 wheels of 66, No. 3 wheels of 64, No. 2 wheels of No. 1 wheel with gear train 50.Wherein, No. 1 wheel 64 has pinion 62 interlock mutually of No. 1 pinion 78 forming an integral body on same axle and 80, No. 1 gears 80 of large diameter No. 1 gear and travelling gear 58.No. 2 gears 66 have No. 1 pinion 78 interlock mutually of No. 2 pinions 82 forming an integral body on same axle and 84, No. 2 gears 84 of large diameter No. 2 gears and No. 1 gear 64.No. 3 gears 68 have No. 2 pinion 82 interlocks mutually of large diameter No. 3 gears 86 that form an integral body on same axle and 88, No. 3 gears 86 of No. 3 intermittent gears and No. 2 gears 66.No. 4 gears 70 have No. 4 pinions 90 and large diameter No. 4 gears 92 that are arranged on mutually on the same axle.Simultaneously, be provided with the jagged the many 1st continuously at an axial end face (upper surface among Fig. 4) garden, the upper edge Zhou Fangxiang of No. 4 pinions 90 and cooperate tooth 94.In addition, between No. 4 pinions 90 and No. 4 gears 92, install the 1st slip ring 96 additional, constituted the 1st friction clutch.The permission that relatively rotates on the central shaft of No. 4 pinions 90 and No. 4 gears 92 is carried out under resistance to sliding.No. 5 wheels 72 have and form as a whole No. 5 pinions 98 and 100, No. 5 gears 100 of large diameter No. 5 gears are taken turns 70 No. 4 pinion 90 interlocks mutually with No. 4 on same axle.No. 6 wheels 74 have No. 6 pinions 102 and large diameter No. 6 gears 104 that are arranged on mutually on the same axle, simultaneously, between above-mentioned No. 6 pinions 102 and No. 6 gears 104, installed the 2nd slip ring 106 additional, constituted the 2nd friction clutch, the permission that relatively rotates on the central shaft of No. 6 pinions 102 and No. 6 gears 104 is carried out under resistance to sliding.And, mainshaft gear 38 interlock mutually of No. 6 pinions 102 of these No. 6 wheels 74 and the timer shaft 16 of prescribing a time limit.So, go up the rotary driving force that produces at the output shaft 54 (output gear 56) of flat motor 32, with gear train 48 and mainshaft gear 38, be delivered in limited time on the timer shaft 16 through the high speed that constitutes by 1～No. 6 wheel through travelling gear 58.

And, on the other hand, constitute low speed and have on same axle with No. 7 wheels 76 of gear train 50 and form as a whole No. 7 gears 108 and No. 7 intermittent gears 110, these two gears 108,110 are taken turns 68 No. 3 intermittent gear 88 interlocks mutually No. 3 of gear train 48 with constituting to use at a high speed.And these No. 3 intermittent gears 88 and No. 7 intermittent gears 110 are combined and the gear mesh that forms can be realized very big speed reducing ratio by means of intermitten.And these No. 7 wheel 76 is arranged in and the top that constitutes No. 4 wheel 70 same central shafts using gear train 48 at a high speed, can carry out relative displacement with No. 4 wheels 70 with the direction that is toward or away from the axial direction.And, between the opposite face of 70 and No. 7 wheels 76 of these No. 4 wheels, be provided with helical spring 112, utilize the active force of this helical spring 112 to make No. 7 wheels 76 obtain a kind of power that moves towards the direction of leaving No. 4 wheels 70.And, No. 7 wheels 76 axially below, the 1st of No. 4 pinions 90 in No. 4 wheels 70 cooperate position, the opposite part of tooth 94, are provided with the jagged the many 2nd continuously along garden Zhou Fangxiang and cooperate tooth 114.And the 1st of No. 4 pinions 90 cooperate the 2nd of tooth 94 and No. 7 wheels 76 to cooperate tooth 114, in order to work in coordination on the direction of garden Zhou Fangxiang, have the zigzag fashion in the mutual inclination of an opposite side of garden Zhou Fangxiang.

And No. 7 wheel 76 relies on switching mechanisms 52 to carry out displacement in the axial direction, is switched to the disengaging configuration of sowing discord and the enterprising line displacement of cooperation position of overlap joint with respect to No. 4 wheels 70.This switching mechanism 52 is by following cam path 116 and switch pendular body 120 and constitute, and this cam path 116 is formed on the face on axial one side of mainshaft gear 38, extends to garden Zhou Fangxiang; Switch pendulum mass body 120 be arranged in the oscillation center axle 118 that parallels with the timer shaft 16 of prescribing a time limit around, can swing.The cam path 116 of mainshaft gear 38 length in accordance with regulations is formed on the garden Zhou Fangxiang of mainshaft gear 38, its component part has: in garden Zhou Fangxiang one end side of the manual direction of rotation of timer shaft 16 in limited time, formed the large-diameter portion of extending to garden Zhou Fangxiang in the outer circumferential side part of mainshaft gear 38; In Zhou Fangxiang the other end, garden side, formed the minor diameter of extending to garden Zhou Fangxiang in interior all side parts of mainshaft gear 38; At garden Zhou Fangxiang middle body, formed the gradual change portion that above-mentioned large-diameter portion and minor diameter are connected continuously.And, switch pendular body 120 and have the fitting projection 122 that matches with the cam groove 116 of mainshaft gear 38 at an outstanding leading section, set around the swing position of oscillation center axle 118 according to the position of rotation of mainshaft gear 38.In addition, switching another outstanding leading section of pendular body 120, forming the slotted hole 124 that extends to the garden Zhou Fangxiang of oscillation center axle 118 rotations, this slotted hole 124 in, inserting and take turns 76 rotary middle spindle for No. 7, and make its can be in slotted hole 124 slide displacement.And, the surrounding wall 128 of slotted hole 124 axial width on the long axis direction of slotted hole 124 changes, be the step surface shape below it, long axis direction one side is shallow bottom surface 130, the opposite side of long axis direction is outstanding downwards dark bottom surface 132 simultaneously, has made ramped bottom surface between this shallow bottom surface 130 and dark bottom surface 132.And, the bottom surface of the perisporium 128 of this slotted hole 124 overlaps mutually with the outstanding front end face of the center hub portion 126 of No. 7 wheels 76, under the shallow bottom surface 130 of garden perisporium 128 and state that the center hub portion 126 of No. 7 wheels 76 overlap mutually, No. 7 wheels 76 are taken turns for No. 4 on 70 the position remaining under the potential energy effect of helical spring 112 to leave on the one hand; On the other hand, under the dark bottom surface 132 of garden perisporium 128 and state that the center hub portion 126 of No. 7 wheels 76 overlaps mutually, No. 7 wheels 76 overcome the potential energy effect of helical spring 112, remain on No. 4 to take turns on 70 positions that overlap mutually, and the 1st cooperates tooth 94 and the 2nd to cooperate tooth 114 to remain under the mated condition.

That is to say, switch pendular body 120, the rotary manipulation amount of timer shaft 16 is little in limited time, on fitting projection 122 and position of rotation that the large-diameter portion of cam path 116 matches, the shallow bottom surface 130 of garden perisporium 128 overlaps mutually with No. 7 wheels 76 on the one hand, No. 7 wheel 76 remains on the position of leaving No. 4 wheels 70, the rotary manipulation amount of timer shaft 16 increases in limited time on the other hand, fitting projection 122 matches the position of rotation of (combination) with the minor diameter of cam path 116 on, the dark bottom surface 132 of garden perisporium 128 overlaps mutually with No. 7 wheels 76, and No. 7 wheel 76 combines with No. 4 wheels 70.And, remaining under the locational state that leaves No. 4 wheels 70 at No. 7 wheels 76, actuating force is not transmitted to No. 4 wheels 70 with No. 7 gear train 50 wheels 76 from low speed, specially by coming transmission of drive force with gear train 48 at a high speed.On the other hand, No. 7 the wheel 76 remain on No. 4 the wheel the 70 locational states that combine under, the rotary speed of No. 4 pinions 90 of No. 4 wheels 70 is determined according to No. 7 wheels 76 of low speed rotation, so, rely on No. 3 wheels 68 and No. 4 gears 92 of high speed rotating slide at the position that coincides with the 1st slip ring 96 with respect to No. 4 pinions 90, high speed rotating actuating force to No. 5 wheels 72 is cut off, and has only the low speed rotation actuating force through No. 5 wheels 72, is passed on the timer shaft 16 of prescribing a time limit.

Below the explanation electric energy is regulated timer portion 36.This electric energy is regulated timing portion 36 and is had the adjustment cam 134 that is fixed on the cycle timer axle 18, on this adjustment cam 134, on the position of garden on week, outstanding triangle is pushed projection 162 and integral body of its formation to axial below, has the switching manipulation cam 136 that is garden plate shape substantially simultaneously, it can be rotated around central shaft by 18 supportings of cycle timer axle.And, arranged the cycle contact 30 that constitutes by fixed contact plate 138 and movable contact plate 140 near the switching manipulation cam 136, be under the condition of conducting state, on the one hand at above-mentioned timing contact 28, adjust to the conducting state of cycle contact 30 closures, can be to no illustrated magnetron power supply; On the other hand, adjust to the dissengaged positions that cycle contact 30 draws back, can stop to no illustrated magnetron power supply.In addition, between switching manipulation cam 136 and cycle contact 30, be provided with cycle cam lever 142 and it can be swung around single shaft.The outstanding end on one side of this cycle cam lever 142 is used as the joint portion 144 that combines with the action connection point plate 140 of cycle contact 30, on the other hand, formed cam clinch 146 on the outstanding leading section of another side, this cam clinch 146 carries out wobble drive by switching manipulation cam 146.

That is to say, this switching manipulation cam 136, the outer garden face of its axial upside is as spigot surface 156, the cam clinch 146 of cycle cam lever 142 is used to be slidingly connected, garden gear 148 outside on the outer garden face of axial downside, having simultaneously, should outer garden gear 148 and pinion 150 interlock mutually of ratio wheel 154, this ratio wheel 154 has pinion 150 and the gear wheel 152 that forms an integral body on same axle, simultaneously, the gear wheel 152 of this ratio wheel 154 and No. 4 gear 92 interlocks mutually that constitute No. 4 wheels 70 using gear train 48 at a high speed.So, switching manipulation cam 136 utilizes flat motor 32 rotation of slowing down drives as drive source.And switching manipulation cam 136 moves freely on central axis direction, simultaneously, remains uptrend by means of the 2nd helical spring 156.In addition, the spigot surface 156 of switching manipulation cam 136 has formed breach on two positions in garden week, in this notch part, has formed inclined plane 158,158, and extend from the upper axial end face tilt of switching manipulation cam 136 on this inclined plane.And 158,158 the interior garden side on the inclined plane towards axial top, is provided with the triangular hill 160,160 that extends to garden Zhou Fangxiang.

And, this switching manipulation cam 136 is driven by flat motor 32 and rotates continuously, under the state that the outer garden spigot surface 156 of the cam clinch 146 of cycle cam lever 142 and switching manipulation cam 136 overlaps, movable contact plate 140 leaves fixed contact plate 138, and cycle contact 30 is in dissengaged positions.Then, rotation by switching manipulation cam 136, triangular hill 162 with respect to adjustment cam 134, the projection 160 of switching manipulation cam 136 rises, switching manipulation cam 136 is depressed towards axial below, so cam clinch 146 leaves the outer garden spigot surface 156 of switching manipulation cam 136, move towards axial top, rise to the axial top of switching manipulation cam 136.Its result allows the cycle timer axle 18 side displacements to cam clinch 146, allows 142 swings of cycle cam lever.So movable contact plate 140 to the 138 side displacements of fixed contact plate, becomes the "on" position of cycle contact 30 closures between these contact panels owing to its elastic reaction.In addition, because switching manipulation cam 136 continues rotation, cam clinch 146 is led by the inclined plane 158 of switching manipulation cam 136, from switching manipulation cam 136 axially above turn back to state once more to the outer garden of switching manipulation cam 136 spigot surface 156 overlap joints.So, in the electric energy that adopts this structure is regulated timer portion 36, cycle timer axle 18 is rotated operation, relative position between the cam clinch 146 in the cycle cam lever 142 of the triangular hill in the adjustment cam 134 162 is carried out manual adjustments, can configuration switch operation of cam 136 1 enclose interior conduction time and the ratio of non-conduction time, be the running time ratio of magnetron, can regulate electric energy.

And this break-make change action that utilizes the rotation of switching manipulation cam 136 and carry out carries out during the running time of being set by timing cam 40 in above-mentioned timer portion 34 in limited time continuously, after finishing running time, stop power supply in flat motor 32, thereupon, stop change action.And, this timing switch 10 is provided with acoustic means 171, when the setting-up time of timing cam 40 finishes, the revolving force that is added on the timing cam bar 46 is passed to the member 172 of ringing a bell (referring to Fig. 1 .2), this member 172 of ringing a bell combines with the rotary middle spindle 170 of timing cam bar 46 with elastic type, this bell member 172 (referring to Fig. 1 .2) is rotated around rotary middle spindle 170, the member 172 so ring a bell (referring to Fig. 1 .2) beats the call bell 314 that is exposed on the external, and sends the tinkle of bells of end of cooking.

And, in the timing switch 10 of present embodiment, actuating force is sent to drive source on the in limited time timer shaft 16 and cycle timer axle 18 by above-mentioned power drive system 33, adopted the flat motor 32 of ad hoc structure.This flat motor 32, shown in exploded view and oblique view in Fig. 5～6, has the stator 216 that coil 214 has been installed, on formed magnetic pole formation portion 218, the 218 aspectant centre positions rotor 222 with permanent magnet 220 is being installed on this stator 216, and it can be rotated around single shaft.And, by to coil 214 energising, make in the magnetic pole formation portion 218 of stator 216 and produce magnetic pole, utilize and be arranged on the effect of the magnetic force between the magnetic pole 224 on the outer garden face of rotor 222, drive rotor 222, make its rotation.

The more detailed structure of coil 214 is to twine live wire 228 on the coil rack 226 of coiling shape.Coil rack 226 is made with resin system insulating material etc. as everyone knows, has formed the incorporate end plate portion that is extended to flange-like at the axial both ends of cylindrical portion.Especially in the present embodiment the rectangular tubular of cylindrical portion, end plate portion also is corresponding rectangular plate shape.And, formed the rectangle medium pore 230 of break-through vertically in two ends board and cylindrical portion.And, the insulated electric conductor (magnet-wire) of annealed copper wire etc. in having adopted, live wire 228 is arranged, and it is wrapped on the outer peripheral face of cylindrical portion of coil rack 226.And two ends leading part 232,232 is outwards drawn from an end plate portion of coil rack 226, by these leading parts 232,232, alternating current is supplied on the coil 214.

And the plate body 234,234 of cutting apart that stator 216 is cut apart (amalgamation) plate body by a pair of conduct constitutes.Cut apart plate body 234,234 and make, adopted the part of making by the single piece plate punch process especially in the present embodiment by magnetic materials such as silicon steel sheets.And, cutting apart plate body 234,234 all has by rectangular tabular straight line (light face) portion 236 of certain width along the straight line prolongation, at the longitudinally middle body of this line part 236, formed integrated central protuberance 238 to the laterally projecting rectangular plate shape of plate.And two central protuberances 238,238 of cutting apart plate body 234,234 are inserted in the medium pore 230 of coil rack 226 respectively and make it chimeric fixing from axial both sides.These two central protuberances 238,238 are assembled into tight connection and overlap, are fixed into an integral body mutually.Simultaneously, formed the core part of inserting in the medium pore 230 that is arranged in coil rack 226 240.And, the medium pore 230 of coil rack 226, its rectangular cross section size preferably: it is wide that width equals the plate of central protuberance 238 substantially; 2 times of thickness of slab that are equivalent to central protuberance 238 highly substantially are so that the central protuberance 238,238 that inserts from axial both sides can remain on the state that closely coincides together mutually.

Moreover, on an end of the longitudinally of cutting apart plate body 234,234, having formed incorporate magnetic pole formation portion 218, it has the garden arc shaped opening portion 242 to opposite direction (plate width direction) opening.These magnetic pole formation portions 218,218 of cutting apart plate body 234,234 are positioned at the face of facing one another, the centre is left on the position in gap.And garden shape framework of two garden arc shaped opening portion 242,242 common formations has formed the rotor accommodating area in this garden shape framework.And, in these garden arc shaped opening portions 242, on the Zhou Fangxiang of garden, be provided with many notch parts 244 that leave mutually, utilize these notch parts 244 that this garden arc shaped opening portion 242 is separated on the Zhou Fangxiang of garden, so formed many (present embodiment is respectively 3 in each garden arc shaped opening portion 242) convex magnetic pole piece 246 of extending of length in accordance with regulations on the Zhou Fangxiang of garden respectively.And, the length that is shorter in length than magnetic pole piece 246 garden Zhou Fangxiang of the garden Zhou Fangxiang of each notch part 244.And, on these magnetic pole pieces 246,, can produce magnetic flux by core part 240 and line part 236 to coil 214 energisings, magnetic pole appears.And the cycle that magnetic pole occurs is corresponding with the frequency of the alternating current of energising, is decided the rotary speed of rotor 222 described later by this frequency.

And, on the other hand, on the other end of the longitudinally of cutting apart plate body 234,234, all formed to opposite direction (plate width direction) and pressed the outstanding integrated end protuberance 248 of certain width.And the central protuberance 238,238 of cutting apart plate body 234,234 is inserted into and carries out chimeric fixingly in the medium pore 230 of coil rack 226, connects under the state that overlaps closely so end protuberance 248,248 also remains on mutually.And, utilize these end protuberances 248,248, be independent of magnetic pole formation portion 218 (with different paths) and formed short circuit portion 250, this short circuit portion 250 interlinks the both sides of core part 240 together continuously with magnetic means.Especially in the present embodiment, magnetic pole formation portion 218 and short circuit portion 250 pairs of core part 240 (coil 214) carry out clamping, on identical substantially plane, be positioned at an opposite substantially side, like this, help magnetic pole formation portion 218 and short circuit portion 250 are guided in the magnetic field that produces to coil 214 energisings.Therefore, can reduce the unstable leakage flux when coil 214 energisings, the magnetic field that can as far as possible reduce in magnetic pole formation portion 218 and the short circuit portion 250 simultaneously interacts, and can stably obtain to guide into the magnetic flux density of magnetic pole formation portion 218.

And, on a line part 236 of cutting apart plate body 234, between central protuberance 238 and garden arc shaped opening portion 242, formed a step 252, its size is equivalent to the thickness of slab that another piece is cut apart plate body 234, like this, the a pair of plate body 234,234 of cutting apart overlaps mutually in core part 240 and short circuit portion 250 places, and on the other hand, magnetic pole formation portion 218,218 its position on identical substantially plane is face-to-face.And, the a pair of central protuberance 238 of cutting apart plate body 234,234,238 and the outstanding length of end protuberance 248,248, under the state that flat motor 32 assembles, just in time equal to arrive the length of the line part of cutting apart plate body 234,234 236,236 of pairing.Simultaneously, the outstanding length of garden arc shaped opening portion 242,242 be slightly smaller than line part 236,236 face-to-face between half of distance.

On the other hand, rotor 222 has the permanent magnet 220 of the garden ring flat-plate shape of heavy wall.This permanent magnet 220, its outside dimension is less than the internal diameter size of the rotor accommodating area that forms in stator 216.Simultaneously, garden face upper edge garden Zhou Fangxiang alternately is provided with many (being 5 couples of N, the S utmost point in the present embodiment) magnetic poles 224 outside this.And hollow output shaft 54 is inserted with same axis and is fixed in the centre bore 256 of this permanent magnet 220.This output shaft 54 is outstanding to axial top from permanent magnet 220 simultaneously, utilizes this ledge to make output gear 56 and integral body of its formation.And the middle body of permanent magnet 220 in the rotor accommodating area of stator 216 is disposed on the central shaft, and suffered bearing state is integrally to be rotated around central shaft.And, under this is provided with state, between the interior garden face of many magnetic poles 224 that are arranged alternately at the outer garden of permanent magnet 220 face upper edge garden Zhou Fangxiang and the magnetic pole formation portion 218 of stator 216, leave the gap diametrically, its position is face-to-face.That is to say, between rotor 222 and magnetic pole formation portion 218, all formed the gap along whole garden week.

And, it is described to open clear 62-140878 communique strictly according to the facts, as everyone knows, the relative position of the garden Zhou Fangxiang of the magnetic pole piece 246 of magnetic pole formation portion 218 and the magnetic pole 224 of rotor 222, suitably adjust, make its inhomogeneous unanimity on the Zhou Fangxiang of garden, so, along with in coil 214, feeding alternating current, because the magneticaction between the magnetic pole that in the magnetic pole piece 246 of magnetic pole formation portion 218, produces and the magnetic pole 224 of rotor 222, produce rotary driving force in rotor 222, rotor 222 is rotated according to the corresponding rotary speed of frequency with the coil 214 interior alternating currents that passed through.In addition, if in coil 214, do not have alternating current to pass through, then rotor 222 can stop on such position, when promptly start next time, because energising in the coil 214, make the magneticaction between the magnetic pole 224 of the magnetic poles that produce in the magnetic pole piece 246 and rotor 222, in rotor 222, can produce rotary driving force.That is to say, in the flat motor 32 of present embodiment, do not need to be provided with in addition the driving starting apparatus.

Moreover, be fixed on the rotor 222 output gear 56 as previously mentioned, carry out interlock by travelling gear 58 and the gear that constitutes gear train, make timer portion 34 and 36 actions of cycle timer portion in limited time by this gear train.And in the present embodiment, headed by output gear 56 and travelling gear 58,1～No. 7 gear and timing cam 40 and adjustment cam 134, switching manipulation cam 136 etc. all utilize resin system insulating material such as non-conductive plastics etc. to make.

In addition, on the base end part of the output shaft 54 of flat motor 32, formed radius vector to the outstanding a pair of integrated stop teat 258,258 of foreign side.On the other hand, downwards same at travelling gear 58 being provided with and stopping counter-rotating ring 262, and it independently assembles, and can carry out relative the rotation with travelling gear 58 under the resistance to sliding of stipulating.This stops counter-rotating ring 262 and is garden ring flat-plate shape on the whole substantially, has simultaneously in garden Zhou Shangyi place radius vector to the outstanding retention tab 260 of foreign side.And, when the rotor 222 of flat motor 32 rotates by positive veer, stop protrusion 260 is rotated to the direction of the stop teat 258 that leaves output shaft 54, remain on the position of leaving stop teat 258, on the other hand, when the rotor 222 of flat motor 32 rotated by reverse directions, stop protrusion 260 stopped on the stop teat 258 of output shaft 54, so stop output shaft 54 rotations, be rotated by common direction of rotation.

And, comprise the timer shaft 16 in limited time of the flat motor 32 that adopts said structure and power-transmission system 262 and the actuating mechanism of cycle timer axle 18, all be contained in the inside of shell 264 to accommodate state group.This shell 264 is shown in the overview of Fig. 7, and its component part comprises:

The 1st opening casing 266, rectangular substantially box shape has the peristome as lunch box; And

The 2nd opening casing 268, rectangular substantially box shape, size is than the big circle of the 1st opening casing.

The 1st opening casing 266 is on its peristome stresses to be laminated to outside as the bottom wall portion 270 of the partition wall of the 2nd opening casing 268, simultaneously, rectangular substantially tabular lid 272 overlaps on the peristome of the 2nd opening casing 268, and the 1st and the 2nd opening casing 266,268 and lid 272 fixed with bolt etc. between mutually.Especially, the 1st and the 2nd opening casing 266,268 and lid 272 are dielectric, and make by having nonmagnetic material, make the integral forming product with synthetic resin materials such as ABS respectively.

And, the 1st opening casing 266 and the 2nd opening casing 268, the outstanding locking plate 274 that is provided with is fixed in the stop window 276 that the bottom wall portion upper shed of the 2nd opening casing 268 forms on the opening circumference of the 1st opening casing 266, tightens fixing with bolt portion 278 simultaneously.Therefore, this assembling can disassemble.And the 2nd opening casing 268 and lid 272 on lid 272 in outstanding 4 hired thug 280 that are provided with, utilize lid 272 is fixed to set bolt on the fixed head 14 assembles and it can be disassembled.And, in the inside of the 2nd opening casing 268, with the bolt position of lid 272 on, outstanding respectively being provided with twisted the fixed leg 284 that bolt is used.And, the the 1st and the 2nd opening casing 666,268 and lid 272 are assembled so mutually, consequently: in the inside of shell 264 with respect to space outerpace under the state that has carried out zoning substantially and come down under the state of mutual zoning, in the 1st opening casing 266, formed the 1st accommodating area 286; In the 2nd opening casing 268, formed the 2nd accommodating area 288.

And, in the first opening casing 266, accept platform 254 what open side was provided with the pair of planar concave shape, be provided with the corresponding step of thickness of the stator 216 of a kind of and flat motor 32 at its peristome.And, shown in Fig. 8～9, in the first opening casing 266, accommodated flat motor 32, its rotor 216 is embedded on the step that bears platform 254 of the first opening casing 266, fixedly mount, simultaneously, supporting rotors 222 (output gear 56) and travelling gear 56 can rotate it respectively to utilize rotor fulcrum 300 on the bottom wall portion be arranged on the first opening casing 266 and power axle 302.And, on the bottom wall portion of the first opening casing 216, vertically set up supporting rotor 222 to make its revolvable rotor fulcrum 300 and supporting travelling gear 58 make its revolvable power axle 302 substantially respectively.The outstanding leading section of this rotor fulcrum 300 and power axle 302 supports fixing by the diapire of the second opening casing 268 and following supporting pieces 292.And the first opening casing 266 adopts the base structure that has the different step in depth dimensions part, the accommodating area of travelling gear 58, and its diapire is more shallow than the accommodating area of flat motor 32.

In addition, the supporting position of the upper end of the power axle 302 in the second opening casing 268 is hat supporting pieces 292 outstanding in the second opening casing 268, like this, the layout of the pinion 62 of travelling gear 58 is to be projected in the second opening casing 268 the formed transmission window 194 from the second opening casing, 268 diapires.In a word, travelling gear 58 is arranged to cross between the first opening casing 266 and the second opening casing 268.In addition, in the surrounding wall portion of the first opening casing 266, be provided with the notch part 269 that the member 172 of ringing a bell outstanding from the second opening casing, 268 diapires is provided with usefulness.

And, in the second opening casing 266, set up and fixed 7 fulcrums 296,298,300,302,304,306,307.Utilize these fulcrums to support respectively to constitute 1～No. 7 wheel 62～67 and the ratio wheel 154 of the system that cogs that it can be rotated.And, periphery bight in the second opening casing 268, be provided with the 1st supporting pieces 291,291 and the 2nd supporting pieces 293,293, utilize these supporting pieces 291 to support fixed contact plate 42 and the movable contact plate 44 that constitutes timing contact 28, simultaneously, utilize the 2nd supporting pieces 293,293 to support the fixed contact plate 138 and the movable contact plate 140 of formation cycle contact 30.In addition, the cardinal principle middle body in the second opening casing 268 has been set up integrated pillar 308,309, and timer shaft 16 and cycle timer axle 18 can rotate it to utilize this pillar 308,309 to support in limited time respectively.And the outstanding leading section of above-mentioned each fulcrum 296～307 snaps on the inwall of lid 272, supports fixing by lid 272.And, substantially it is isolated between the setting area of the setting area of gear train and the contact utmost point 138,140 in the inside of the second opening casing 268, the perpendicular wall of an extension is set.

And, in the present embodiment, outstandingly respectively be arranged on rotor fulcrum 300 and power axle 302 and each fulcrum 296～307 in the first opening casing 266 and the second opening casing 268 and pillar 308,309 is all outstanding parallel to each other is arranged on the depth direction of the 1st and the 2nd opening casing 266,268.

In addition, on lid 272, with the bolt position of the second opening casing 268 on, the outstanding 4 incorporate shanks 280 outwards giving prominence to that are provided with, utilize the outstanding front end face and the said fixing plate 14 of these shanks 280 to coincide, so, between fixed head 14 and shell 264 (lid 272), form a space that is used to be provided with above-mentioned tooth bar 24.And, at the cardinal principle middle body of lid 272, formed 2 jacks 312,313, make timer shaft 16 and outside the giving prominence to of cycle timer axle 18 difference in limited time by this inserting hole 312,313.

And, shown in Fig. 1～2, on the diapire of the first opening casing 266, formed from the outside to the outstanding call bell of foreign side with integrated principal post 316.And,, fix bald shape metallic call bell 314 with screw at the front end of call bell with pillar 316.In addition, the member 172 of ringing a bell is fixed on the bottom wall portion outside of the second opening casing 268, can rotate freely, it is arranged on the inboard of call bell 314, as previously mentioned, and member 172 and timing cam 40 interlock mutually of ringing a bell, be driven together, so along with the end that is set in the time in the timer portion 34 that prescribes a time limit, action begins to ring a bell.

In the cycle timer that adopts said structure, adopt flat motor 32, it is accommodated the inside that is arranged in non-conductive outer housing member 264, therefore, can prevent the danger of being shocked by electricity when the people contacts fully.And, do not need to help simplified structure as the earth terminal in the shell 264 of motor cover yet, improve manufacturability.And, because flat motor 32 hides by shell 264, so, help preventing that foreign matter from invading from the outside, can prevent from effectively simultaneously to impact etc. flat motor 32 is caused damage, can realize stable work.

And, come down to the 1st accommodating area 286 and the 2nd accommodating area 288 are separately formed, owing to come down to the accommodating area of flat motor 32 is split from the accommodating area of gear train etc., so also can avoid constituting the various materials of gear train etc. as far as possible flat motor 32 is produced harmful effects, can realize stable work.

In addition, utilizing the first opening casing 266 and the second opening casing 268 that the district of accommodating gear train etc. is split from the district of accommodating flat motor 32 in fact forms, simultaneously the axial rotary according to various gears etc. overlaps these two districts get up, and arranges.Therefore, many reduction gearing, especially the high speed of present embodiment and low speed transmission mechanism arranged side by side and electric energy governor motion etc. are assembled the space in the required shell, be easy to be guaranteed, on the other hand, can avoid whole casing to increase as far as possible, help making small-sized timing switch as a whole.

And, in the present embodiment, make call bell 314 be exposed to the outside of shell 264 and support with the non-conductive resin material, so can make it be totally independent of electric partss such as flat motor 32, timing contact 28 and cycle contact 30, therefore, be easy to adopt the metallic call bell 314 of volume and acoustical sound, it does not need earth terminal etc., and very safe on using.

In addition, in the present embodiment, respectively the first opening casing 266 of lunch box shape and the second opening casing 268 and lid 272 are overlapped and get up to constitute casing component 264, utilize the bottom wall portion 270 of the second opening casing 268, constituted the next door member that the 1st accommodating area 286 and the 2nd accommodating area 288 are divided.Therefore, can simplify shell mechanism, and further improve manufacturability.Especially in the present embodiment, the first opening casing 266 is carried out opening above vertical, flat motor 32 and the travelling gear 58 inner simultaneously second opening casing 268 coincidence on the first opening casing 266 of packing into, further Assembling gear system and component parts such as clutch mechanism, contact panel in the second opening casing 268 are installed lid 272 then on the second opening casing 268.This a succession of manufacturing operation can carry out successively continuously from a direction, does not need the 1st, the 2nd opening casing 266,268 is put upside down.Therefore, anufacturability is good, and automation also realizes easily.

And especially in the present embodiment, the core part 240 of flat motor 32 and short circuit portion 250 are overlapped and are formed by the central protuberance 238,238 of respectively cutting apart plate body 234,234 and end protuberance 248,248, for forming stator 216, do not need riveted joint and bonding, so, be more prone to make.In addition, in the present embodiment, utilize the medium pore 230 of coil rack 226 to realize assembling and supporting to cutting apart plate body 234,234, so, combining structure can further be simplified, the easier assembling.Especially, the skeleton 226 of coil 214 adopts the rectangular cylinder shape, its advantage is: a pair of each central protuberance 238,238 of cutting apart plate body 234,234 is coincided together and the core part 240 of the writing board shape that forms can be embedded in the medium pore 230 of coil rack 226 at an easy rate.

In addition, in the present embodiment, energising makes rotor 222 be rotated action in the coil 214 of flat motor 32, the self-induction in this wire ring 214 since core part 240 and short circuit portion 250 increase, so coil 214 interior electrical currents reduce.Its result, the caloric value of coil 214 reduces, and therefore, can satisfy the requirement of restriction caloric value on the one hand, can reduce coil turn on the other hand, can make coil 214, even flat motor 32 is realized miniaturization.And, along with the minimizing of coil turn, the faults such as broken string when helping avoiding live wire 228 circumvolutions.And, in order to reduce electrical current, do not need to increase especially other members such as capacitor yet, so product structure is simple, manufacturability, cost is also low.

Moreover, because short circuit portion 250 and magnetic pole formation portion 218 form other loop.So, can reduce owing to forming the harmful effect that short circuit portion 250 causes the actuating force of rotor 222 as far as possible, can guarantee that motor work and output are stable.Especially, in the present embodiment, 218 pairs of core part 240 of short circuit 250 and magnetic pole formation portion (coil 214) are carried out clamping, be disposed on the same plane of cardinal principle, a side over there substantially, so, can more effectively gather short circuit portion 250 to leakage flux, can further improve the stability of the work of magnetic flux and motor.

Especially, in the present embodiment in flat motor 32, coil 214 is clipped in the middle, formed the short circuit portion 250 of magnetic pole formation portion 218 and opposite one side thereof from both sides, therefore, except that having magnetomechanical effects, can also reduce the height dimension of flat motor 32 greatly, so can reduce the 1st receptacle 286, and then can make the volume of timing switch 10 littler.

Embodiments of the invention more than have been described in detail.But this is a kind of example after all, is not to utilize the concrete narration of present embodiment to come the present invention is carried out certain determinate explanation.

For example, gear of the cycle switch mechanism in the present embodiment, call bell, at a high speed/low speed etc. is that the characteristic that requires according to timing switch adapts to employing, is not to be provided with.

And travelling gear has adopted the described gear of example, in addition, also can be set to the epitrochanterian pinion that is fixed on flat motor highlightedly in the 2nd accommodating area, utilizes this pinion to constitute travelling gear.

And gear and clutch mechanism, the position of operating axis etc. are not a kind of qualification.

In addition, the shape of shell also is not limited only to concrete shapes such as the such box-shaped of present embodiment.And, also can on the shell of arranging flat motor, form the air vent hole that cools off usefulness.

Moreover self-evident the present invention is also applicable to the timing switch beyond the microwave oven of this enforcement.

In addition, exemplify no longer one by one.Self-evident, can carry out various changes, correction and improvement etc. according to expert's knowledge to implementing form of the present invention, and, such example, only otherwise exceed aim of the present invention, any being included in the scope of the present invention.

Effect of the present invention:

As can be seen from the above description: in the time switch that adopts structure of the present invention, except adopting Outside the flat motor of ad hoc structure, also adopted by non-and led the ad hoc structure that the do as one likes material consists of Shell, in this shell, divide in fact accommodating area and the gear formed flat motor Therefore the accommodating area of system etc., does not need as the ground terminal in the shell of motor cover, letter Change structure, improved manufacturability, simultaneously, can avoid consisting of the various members of gear train etc. as far as possible Flat motor is caused harmful effect, can stably work.

Claims (8)

1, a kind of timing switch, wherein accommodated and be arranged in the non-conductive outer housing, the timing contact that is arranged in this shell is carried out timing cam mechanism break-make, that can regulate the setting timing, utilize drive motor, carried out work by accommodating the deceleration that is arranged in this shell with gear train, it is characterized in that:

Form the counter septum plate in the inside of above-mentioned shell and carry out clamping, be positioned at the 1st accommodating area and the 2nd accommodating area of its both sides, and, above-mentioned drive motor adopts a kind of so flat motor, wherein, magnetic pole at the stator that is made of the tabular magnetic material that coil has been installed forms in the portion, be provided with the rotor of having set many magnetic poles with permanent magnet outside on the face of garden, on the one hand this flat motor is accommodated and be arranged in above-mentioned the 1st accommodating area, on the other hand, above-mentioned deceleration accommodated with gear train and above-mentioned timing cam mechanism and timing contact be arranged in above-mentioned the 2nd accommodating area, and be provided with such travelling gear, it is crossed between above-mentioned the 1st accommodating area and the 2nd accommodating area, is used for the rotary driving force of this flat motor is delivered to this deceleration with in the gear train.

2, timing switch as claimed in claim 1, it is characterized in that: above-mentioned deceleration comprises that with the formation of gear train the high speed that makes above-mentioned timing cam mechanism high speed motion is with gear train and the low speed gear train that makes this timing cam mechanism low speed action, and, be provided with the speed switching mechanism, it is according to the limiting time in the above-mentioned timing cam mechanism, select to make its work with gear train or low speed with gear train at a high speed, this speed switching mechanism is accommodated to be arranged in above-mentioned the 2nd accommodating area.

3, timing switch as claimed in claim 1 or 2, it is characterized in that: be provided with cycle contact and cycle cam mechanism, promptly drive by above-mentioned flat motor, by the predefined cycle this cycle contact is carried out break-make, and above-mentioned cycle contact and cycle cam mechanism accommodated be arranged in above-mentioned the 2nd accommodating area.

4, as each the described timing switch in the claim 1 to 3, it is characterized in that: be provided with acoustic means, i.e. fixing call bell and make it be exposed to the outside on above-mentioned shell, and from the outwards outstanding member of ringing a bell that makes this calling bell ring that is provided with of this shell, and drive this member and make it and the break-make of above-mentioned timing contact is carried out interlock of ringing a bell, this acoustic means is accommodated be arranged in above-mentioned the 2nd accommodating area.

5, as each the described timing switch in the claim 1 to 4, it is characterized in that: above-mentioned shell is cut apart by following components and is formed:

The first opening casing is used to constitute the outer wall and the perisporium of above-mentioned the 1st accommodating area;

The second opening casing is used to constitute the perisporium of above-mentioned next door and above-mentioned the 2nd accommodating area; And

Lid is used to cover the opening portion of this second opening casing, constitutes the outer wall of above-mentioned the 2nd accommodating area.

6, the described timing switch of each of claim 1～5 is characterized in that:

Constitute said stator with a pair of plate body of cutting apart, this a pair of plate body is embedded in the medium pore of above-mentioned coil from axial both sides, fix mutually with this.

7, as each described timing switch of claim 1～6, it is characterized in that:

In above-mentioned flat motor short circuit portion from independent formation the magnetic pole formation portion, this short circuit portion is used for making the two side portions of the above-mentioned coil of said stator to carry out magnetic mutually and connects.

8, timing switch as claimed in claim 7, it is characterized in that: utilize the pair of plate-shaped dividing body that makes up mutually from the axial both sides of above-mentioned coil to constitute said stator, be embedded in the medium pore of this coil from axial both sides this a pair of tabular dividing body, make its mutual coincidence, and axial end direction one side at this coil, this a pair of tabular dividing body positioned make it face one another face, so, form on the one hand above-mentioned magnetic pole formation portion, on the other hand at the opposite side of the axial end direction of this coil, this a pair of tabular dividing body is overlapped mutually, form above-mentioned short circuit portion with this.

Images