CN201038072Y

CN201038072Y - Timer

Info

Publication number: CN201038072Y
Application number: CNU2007201241388U
Authority: CN
Inventors: 梁伟国
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-21
Filing date: 2007-04-21
Publication date: 2008-03-19
Anticipated expiration: 2017-04-21

Abstract

The utility model relates to a mechanical timer used in a household electrical appliance which comprises a shell, a timing axis, a driving cluster gear, a functional adjustment gear and an output rotating wheel. The functional adjustment gear is divided into an upper gear, a middle gear and a lower gear along the axis direction. Cooperating mechanisms are arranged between the upper gear and the middle gear, the middle gear and the lower gear. At least one gear is cooperated with the output rotating wheel among the upper gear, the middle gear and lower gear. A dialing mechanism is arranged around the functional adjustment gear; the dialing mechanism can drive the output rotating wheel to move along the axis direction or drive the gear which is cooperated with the output rotating wheel to move along the axis direction. The utility model transfer an original single-functional adjustment gear into the three parts, the upper gear, the middle gear and lower gear; the timing function is further improved; the cost is not increased; the complexity of the structure does not change. The structure can be used in a timer with or without a barbecue function.

Description

Timer

Technical field

The utility model relates to the mechanical timer that a kind of household appliances are used.

Background technology

Existing microwave oven timer comprises that a power supply input electrode, two power supply output electrodes, driving gear set, functions adjust gear, output runner, regularly axle, fork, housing, owing between two power supply output electrodes and the power supply input electrode multiple output compound mode being arranged, each way of output is all being represented a kind of function of product, but existing timer has been after having selected certain function, and the output of this function will be constant always stop or manually reselecting another function up to the time.

Summary of the invention

Therefore, the purpose of this utility model be to provide a kind of after manually having selected certain function of timer, fork can also change the timer of the compound mode between power supply input electrode and two the power supply output electrodes voluntarily.

The purpose of this utility model is achieved in that a kind of timer, comprise housing, the timing axle, driving gear set, function is adjusted gear, the output runner, described function adjustment gear axially is separated at it and cogs, idler gear and lower gear three parts, cog and idler gear, all be provided with matching mechanism between idler gear and the lower gear, cog, have at least a gear to cooperate in three gears of idler gear and lower gear with the output runner, adjust the gear periphery in function and also be provided with pulling mechanism, pulling mechanism can make the output runner move along its axis or make and export the gear that runner cooperates and move along its axis.

Above-mentioned purpose also can be done further perfect by the following technical programs:

Described cog and idler gear and idler gear and lower gear between matching mechanism be that idler gear and lower gear are axially hollow, cog and be provided with locating shaft, idler gear and lower gear are set on the locating shaft, be fixed with back-moving spring on the locating shaft, cog and idler gear, two relative faces of idler gear and lower gear respectively at interval and be provided with one to one can intermeshing protruding position and recess, and cog and idler gear between protruding position and the degree of depth of recess engagement greater than cog and idler gear between the distance that moves to axial, the lower gear periphery is provided with the outer ring projection.

Described cog move axially be cog and its corresponding shell between respectively correspondence be interval with projection, with the rotation that cogs, the projection on cogging is absorbed under action of reset spring between two projections of housing.

Described output runner is that the output runner is set on the locating shaft of lower gear with cooperating of lower gear, and output runner two surfaces relative with lower gear are interval with projection respectively, and another face of output runner is provided with back-moving spring.

Described pulling mechanism comprises the swing span of an activity, stretch out a push rod on the swing span, push rod is provided with the distortion shell fragment, the end of push rod cooperates with the timing axle, regularly axle is provided with an outer snare, the outer ring puts and is provided with a recess, with the regularly rotation of axle, slide between the recess of snare and the surface outside in the push rod end, the swing span inboard is provided with one section tooth bar, also be provided with a wobble gear on the swing span and the briquetting that makes zero, wobble gear is driven by driving gear set, wobble gear drives wiggling and pressing block rotation, what wiggling and pressing block rotated is fixed on the casing, wiggling and pressing block cooperates with the outer ring projection of lower gear, when the push rod end is positioned at the recess of outer snare, swing span is to timing axle side shifting, one section tooth bar of swing span inboard separates with cogging, wobble gear separates with wiggling and pressing block, wiggling and pressing block resets by the restoring force of self, make zero briquetting cog and lower gear between oppress lower gear simultaneously to output runner side shifting, after push rod slides to the surface from the recess of outer snare, the distortion of distortion shell fragment produces a restoring force to timing axle side, the one section tooth bar of swing span inboard and the engagement that cogs, wobble gear while and wiggling and pressing block engaged transmission, the briquetting that makes zero is adjusted gear away from function.

The utility model original individual feature adjust that gear cogs instead, idler gear and lower gear three parts, timer function is further expanded, and its cost does not have to improve yet and the complexity of structure does not also change, and this structure can be used in is with baking function and not on the timer with baking function.

Description of drawings

Fig. 1 is the inner general assembly drawing of barbecue type timer of band microwave total power shelves power variable function;

Fig. 2 be cog, idler gear, lower gear and output runner three's installation diagram;

Swing span when Fig. 3 is the timer non-return-to-zero and function are adjusted the configuration state figure between the gear;

Swing span when Fig. 4 makes zero for timer and function are adjusted the configuration state figure between the gear;

Fig. 5, Fig. 6, Fig. 7 are the duty cycle variation state diagram of timer when microwave total power output gear;

Fig. 8 is the inner general assembly drawing of plain edition timer of band microwave total power shelves power variable function;

Fig. 9 is timer internal state figure when non-microwave total power is exported gear;

Figure 10 drives the structural representation of output runner for pulling mechanism.

Embodiment

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

In conjunction with Fig. 1 to Fig. 7, a kind of timer comprises housing 1, timing axle 2, driving gear set 3, function adjustment gear 4, output runner 5.Function adjustment gear 4 axially is separated at it and cogs 6, idler gear 33 and lower gear 7 three parts, idler gear 33 and lower gear 7 are axially hollow, cog and 6 be provided with locating shaft 8, idler gear 33 and lower gear 7 are set on the locating shaft 8, be fixed with back-moving spring 9 on the locating shaft 8, lower gear 7 peripheries are provided with outer ring projection 10, cog 6 two faces relative respectively at interval and corresponding one by one intermeshing protruding position 11 and the recess 35 of being provided with idler gear, relative two faces of idler gear 33 and lower gear 7 respectively at interval and be provided with one to one can intermeshing protruding position 34 and recess 12, the degree of depth of protruding position 11 and recess 35 engagements greater than cog 6 and idler gear 33 between the distance that moves to axial, cog 6 move axially be cog and its corresponding shell 1 between respectively correspondence be interval with

projection

13,14, with the rotation that cogs, projection 13 on cogging can be absorbed between two projections 14 of housing under back-moving spring 9 effects, cogs and leaves lower gear relatively.Output runner 5 is set on the backstay 15 of lower gear 7, and output runner 5 and lower gear 7 two relative surfaces are interval with

projection

16,17 respectively, export runner 5 another sides and are provided with back-moving spring 18, and back-moving spring 9 is positioned at back-moving spring 18 inner rings.

Adjust the swing span 19 that gear 4 peripheries are provided with an activity in function, stretch out a push rod 20 on the swing span 19, push rod 20 is provided with distortion shell fragment 21, the end of push rod 20 cooperates with timing axle 2, regularly axle 2 is provided with an outer snare 22, outer snare 22 is provided with a recess 23, with the regularly rotation of axle 2, slide between the recess of snare and the surface outside in push rod 20 ends, swing span 19 inboards are provided with one section tooth bar 24, also be provided with a wobble gear 25 and the briquetting 26 that makes zero on the swing span 19, wobble gear 25 is driven by driving gear set 3, wobble gear 25 drives a wiggling and pressing block 27 rotations, what wiggling and pressing block 27 rotated is fixed on the casing 1, wiggling and pressing block 27 self has restoring force and can reset after leaving wobble gear 25, wiggling and pressing block 27 cooperates with the outer ring projection 10 of lower gear, when push rod 20 ends are positioned at the recess 23 of outer snare, swing span 19 is to timing axle 2 side shiftings, one section tooth bar 24 of swing span 19 inboards 6 separates with cogging, wobble gear 25 separates with wiggling and pressing block 27, make zero briquetting 26 cog 6 and idler gear 33 between oppress idler gear 33 simultaneously to output runner 5 side shiftings, after push rod 20 slides to the surface from the recess 23 of outer snare, 21 distortion of distortion shell fragment produce a restoring force to timing axle 2 sides, the one section tooth bar 24 of swing span 19 inboards and 6 engagements that cog, wobble gear 25 meshes with wiggling and pressing block 27 simultaneously, wobble gear 25 is driven by driving gear set 3, wobble gear 25 drives wiggling and pressing block 27 and rotates, and the briquetting 26 that makes zero is adjusted gear 4 away from function.

As shown in Figure 5, the projection 14 of housing 1 does not contact with 6 the projection 13 of cogging, cog 6 under the effect of back-moving spring 9 away from idler gear 33, and this moment, the outer ring projection 10 of lower gear 7 was pressed mutually with wiggling and pressing block 27, lower gear 7 and output runner 5 are away from cogging 6 and press down back-moving spring 18, idler gear 33 down moves with lower gear 7 under action of gravity, there is not mutual contact point not interact so export runner 5 and shift fork 28 this moment, output runner 5 can not utilize circumferential periphery to promote shift fork 28 and do away from the circle swing of exporting runner 5 along its fixing point, this moment, output gear 5 did not rise, the output state of shift fork 28 just can not change, keep microwave output, so at this time whether timer output or not runner 5 controls and wiggling and pressing block 27 and rotated at diametric plane but do not break away from the outer ring projection 10 of lower gear 7 under the drive of driving gear set 3 always.

As shown in Figure 6, be that with the difference of Fig. 5 wiggling and pressing block 27 rotation amplitudes are enough big at this moment, make with the outer ring projection 10 of lower gear 7 and do not contact, the pressure of 27 pairs of outer ring projections 10 of wiggling and pressing block disappears, idler gear 33, lower gear 7 and the output runner 5 original position of under the effect of spring 18, rising back, on this position output runner 5 contact with shift fork 28, this position cog 6 and idler gear 33 between form the gap.

As shown in Figure 7, under the drive of driving gear set 3, continue to do circular motion at output runner 5 on the basis of Fig. 6, after the projection 17 of the projection 16 of exporting runner 5 and lower gear 7 contacts, because idler gear 33 and cog gapped between 6, so output runner 5 drives lower gear 7 and idler gear 33 is made circular motion together, idler gear 33 and cog 6 recess 35 and protruding position 11 can engagements in the process of motion, 6 can not rotate owing to cog, so idler gear 33 and lower gear 7 can not change again, the projection 16 of output runner 5 is collided at interval with the projection of lower gear 7 17 and output runner 5 is moved axially, the rotation of output runner 5 drive shift fork 28 do away from or near the swing of output runner 5, when shift fork 28 is microwave output during near output runner 5, when shift fork 28 is barbecue output during runner 5 away from output, so the output of this moment is by 5 controls of output runner.

Course of work when Fig. 5, Fig. 6 and Fig. 7 have formed gear that timer connects in microwave output electrode 29 and input electrode 30 always and band output changeable.

Be illustrated in figure 8 as the inner general assembly drawing of plain edition timer of band microwave total power shelves power variable function, be to have only an output electrode 29 with the difference of Fig. 1, function knob 31 by transition gear 32 directly control cog 6.

As shown in Figure 9, this moment, the projection 14 of housing 1 contacted with 6 the projection 13 of cogging, cog and 6 can not move axially, because export runner 5 and rotate at the drive lower edge of driving gear set axle this moment, up to the projection 16 of output runner 5 and projection 17 collisions of lower gear 7, owing to lower gear 7 can not move axially, so force output runner 5 to make shift fork 28 make circle swing away from lower gear vertically, make the timer output state change, so exported runner 5 controls.

As shown in figure 10, rotation cogs and 6 drives idler gears 33 and lower gear 7 rotates, when the outer ring of lower gear 7 projection 10 forwards position contacting with wiggling and pressing block 27 to, outer ring projection 10 and wiggling and pressing block 27 push mutually, the wiggling and pressing block 27 of this timer not only self has restoring force, and can also move both vertically by the face of relatively rotating, this moment, wiggling and pressing block 27 was along its axial motion, extruding output runner 5 in the process of motion, make output runner 5 shift fork 28 be swung near the position of exporting runner 5 away from lower gear 7, also make back-moving spring 18 compressing distortion, continuous motion along with wiggling and pressing block 27, wiggling and pressing block 27 breaks away from outer ring projection 10, output runner 5 does not bear under the pressure of wiggling and pressing block 27, draws close to lower gear under the effect of the back-moving spring 18 that is out of shape, and output runner 5 makes shift fork 28 do swing once more.

Claims

1. timer, comprise housing, the timing axle, driving gear set, function is adjusted gear, the output runner, it is characterized in that: described function adjustment gear axially is separated at it and cogs, idler gear and lower gear three parts, cog and idler gear, all be provided with matching mechanism between idler gear and the lower gear, cog, have at least a gear to cooperate in three gears of idler gear and lower gear with the output runner, adjust the gear periphery in function and also be provided with pulling mechanism, pulling mechanism can make the output runner move along its axis or make and export the gear that runner cooperates and move along its axis.

2. according to the described timer of claim 1, it is characterized in that: described cog and idler gear and idler gear and lower gear between matching mechanism be that idler gear and lower gear are axially hollow, cog and be provided with locating shaft, idler gear and lower gear are set on the locating shaft, be fixed with back-moving spring on the locating shaft, cog and idler gear, two relative faces of idler gear and lower gear respectively at interval and be provided with one to one can intermeshing protruding position and recess, and cog and idler gear between protruding position and the degree of depth of recess engagement greater than cog and idler gear between the distance that moves to axial, the lower gear periphery is provided with the outer ring projection.

3. according to the described timer of claim 2, it is characterized in that: described cog move axially be cog and its corresponding shell between respectively correspondence be interval with projection, with the rotation that cogs, the projection on cogging is absorbed under action of reset spring between two projections of housing.

4. according to the described timer of claim 1, it is characterized in that: described output runner is that the output runner is set on the locating shaft of lower gear with cooperating of lower gear, output runner two surfaces relative with lower gear are interval with projection respectively, and another face of output runner is provided with back-moving spring.

5. according to claim 1 or 2 or 3 described timers, it is characterized in that: described pulling mechanism comprises the swing span of an activity, stretch out a push rod on the swing span, push rod is provided with the distortion shell fragment, the end of push rod cooperates with the timing axle, regularly axle is provided with an outer snare, the outer ring puts and is provided with a recess, with the regularly rotation of axle, slide between the recess of snare and the surface outside in the push rod end, the swing span inboard is provided with one section tooth bar, also be provided with a wobble gear on the swing span and the briquetting that makes zero, wobble gear is driven by driving gear set, wobble gear drives wiggling and pressing block rotation, what wiggling and pressing block rotated is fixed on the casing, wiggling and pressing block cooperates with the outer ring projection of lower gear, when the push rod end is positioned at the recess of outer snare, swing span is to timing axle side shifting, one section tooth bar of swing span inboard separates with cogging, wobble gear separates with wiggling and pressing block, wiggling and pressing block resets by the restoring force of self, make zero briquetting cog and lower gear between oppress lower gear simultaneously to output runner side shifting, after push rod slides to the surface from the recess of outer snare, the distortion of distortion shell fragment produces a restoring force to timing axle side, the one section tooth bar of swing span inboard and the engagement that cogs, wobble gear while and wiggling and pressing block engaged transmission, the briquetting that makes zero is adjusted gear away from function.