CN2831405Y

CN2831405Y - Timer

Info

Publication number: CN2831405Y
Application number: CN 200520067308
Authority: CN
Inventors: 黎玉华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-09
Filing date: 2005-11-09
Publication date: 2006-10-25
Anticipated expiration: 2015-11-09

Abstract

The utility model relates to a timer for household appliances, which comprises a power supply input electrode 1, two power supply output electrode 2, 3, two gearwheels 4, 5, a transmission gear set 6, a shifting piece 7 and a timer shell 8, wherein the periphery of the gearwheel 4 is radically extended with a section of arced block 18 and a positioning shaft 17 is also penetrated with a shifting piece 19. The shifting piece 19 can rotatebely swing around the positioning shaft 17, one end of the shifting piece 19 is connected and linked with the power supply output electrode 2 and the power supply output electrode 3 and the other end of the shifting piece 19 is arranged on the periphery of the gearwheel 4. The utility model has the advantage of reasonable structure design, one shifting piece can be added so as to remove two inching switches, the circuit construction is simpler and the stability and the reliability when the utility model works can be increased.

Description

Timer

Technical field

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

Background technology

Existing timer comprises a power supply input electrode 1, two 2,3, two gears of power supply output electrode, driving gear set, shift fork and timer shell, because the power supply of two power supply output electrodes has the multiple way of output, each way of output is all being represented a kind of function of product, as needing only the independent and power supply input electrode connection of a power supply output electrode, another power supply output electrode disconnects, and realizes a power supply output electrode continued power; Connect with the power supply input electrode at interval separately as two power supply output electrodes, realize two power supply output electrode interleaved powers, or the like also have other multiple power supply form, existing timer also respectively is provided with a sensitive switch A, B (see figure 1) two power supply output electrode back, if selection needs only when a power supply output electrode is independent powers at interval, then must start corresponding sensitive switch and could realize power supply, this structure makes the circuit structure complexity of timer, stability and reliability when also having reduced simultaneously timer work.

Summary of the invention

Stability and the better timer of reliability when therefore, the purpose of this utility model is a kind of the use is provided.

The purpose of this utility model is to realize like this.

A kind of timer, comprise a power supply input electrode 1, two power

supply output electrodes

2,3, two

gears

4,5, driving gear set 6, shift fork 7 and timer shell 8, gear 4 and gear 5 are in axial direction superimposed, the gear termination 11 of gear 4 is connected with external knob on being located at timer shell 8, gear 5 cooperates with driving gear set 6, the inwall of timer shell 8 is provided with locating shaft 17, shift fork 7 is fixed on the locating shaft 17 and can swings along locating shaft 17, it extends radially out one section arc piece 18 all edges of described gear 4, on locating shaft 17, also be coated with a shift fork 19, shift fork 19 can be around locating shaft 17 swings, shift fork 19 1 ends are connected with power supply output electrode 3 and interlock with power supply output electrode 2, and shift fork 19 other ends are positioned at gear 4 peripheries.

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

The external diameter of described arc piece 18 is more than or equal to the radius of the inner ring circumference 13 of gear 5.

Described arc piece 18 axially can be divided into two along gear 4.

The two ends of described shift fork 19 and the fulcrum of swinging around locating shaft 17 are not located along the same line.

Described shift fork 19 is than shift fork 7 more close gear 4 sides.

The utility model reasonable in design increases a shift fork and realizes removing two sensitive switches, and circuit structure is simpler, stability and reliability when having improved timer work.

Description of drawings

Fig. 1 is the partial circuit diagram of existing timer;

Fig. 2 is the plane graph of embodiment 1, and embodiment 1 is power supply output electrode 2 independent continued powers;

Fig. 3 is the structural representation of two gears of embodiment 1;

Fig. 4 is the structural representation of two shift forks of embodiment 1;

Fig. 5 is the shift fork 7 of embodiment 1 and the axial schematic diagram that cooperates of two gears;

Fig. 6 is the shift fork 19 of embodiment 1 and the axial schematic diagram that cooperates of two gears;

Fig. 7 is the plane graph of embodiment 2, and embodiment 2 is power supply output electrode 3 independent continued powers;

Fig. 8 is the plane graph of embodiment 3, and embodiment 3 is power supply output electrode 2 power supply at interval;

Fig. 9 is the plane graph of embodiment 4, and embodiment 4 is power supply output electrode 3 power supply at interval.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment 1, earlier in conjunction with Fig. 3, one side of gear 4 is gear termination 11, it can be connected with the external knob (not shown) on being located at the timer shell, rotate by rotation external knob scalable gear 4, the opposite side of gear 4 has a central shaft 9, is provided with two protruding blocks 15 in the side of gear 4 around central shaft 9, and it extends radially out one section arc piece 18 all edges of gear 4.The center of gear 5 is a bearing holder (housing, cover) 20, outer ring circumference 12 peripheries of gear 5 are provided with teeth, inner ring circumference 13 limits of gear 5 are provided with two breach 14, inner ring circumference 13 faces of gear 5 are provided with two protruding blocks 16, and wherein two breach 14 are corresponding to one by one identical radial position with two protruding blocks 16.

In conjunction with Fig. 4, shift fork 7 is a seesaw shape, and two terminations of shift fork 7 and fulcrum 21 be not on same straight line.Shift fork 19 is a seesaw shape, and two terminations of shift fork 19 and fulcrum 22 be not on same straight line, and shift fork 19 is provided with two fork pin 23,24 that are connected with power supply output electrode 3 with power supply output electrode 2.

In conjunction with Fig. 2 to Fig. 6, a kind of timer comprises a power supply input electrode 1, two 2,3, two

gears

4,5 of power supply output electrode, driving gear set 6, two

shift forks

7,19 and timer shells 8.Gear 5 is set on the central shaft 9 of gear 4, another termination of central shaft 9 is inserted on the timer shell 8, central shaft 9 also is coated with a back-moving spring 10, back-moving spring 10 1 ends withstand on 5 of the gears, back-moving spring 10 other ends withstand on timer shell 8 inwalls, the gear termination 11 of gear 4 is connected with external knob on being located at timer shell 8, the outer ring circumference 12 of gear 5 cooperates with driving gear set 6 transmissions, and gear 4 and gear 5 two

protruding blocks

15,16 on its superposed surfaces are positioned on the concentric circumferences.

Shift fork 7 and shift fork 19 are fixed on the locating shaft 17 and can swing along locating shaft 17, shift fork 7 one ends are connected with power supply input electrode 1 and interlock, shift fork 7 other ends are positioned at the inner ring periphery 13 of gear 4 peripheries and gear 5, two fork pin 23,24 of shift fork 19 are connected with power supply output electrode 3 and interlock with power supply output electrode 2 respectively, shift fork 19 other ends are positioned at the periphery of gear 4, and shift fork 19 is than shift fork 7 more close gear 4 sides.

Power supply input electrode 1 is connected with power supply output electrode 2 when not being subjected to external force all the time, power supply output electrode 3 has the trend away from power supply input electrode 1 all the time, during timer work, the rotation external knob rotates gear 4 earlier, when being positioned at the side, a termination of shift fork 7, a protruding block 15 that makes gear 4 sides stops the rotation, at this moment external knob is parked on the household appliances function of use to be selected relatively certainly, the termination of shift fork 19 is positioned at arc piece 18 next doors but can climb up arc piece 18 at this moment, gear 5 rotates under the drive of driving gear set 6, when the protruding block 15 on protruding block on gear 5 sides 16 and gear 4 sides collides, gear 5 is squeezed to the back-moving spring side shifting, the termination of corresponding like this shift fork 7 just can not fallen in the breach 14, shift fork 7 just is not subjected to the external force effect, power supply input electrode 1 is connected with power supply output electrode 2 all the time, because arc piece 18 can not climbed up in the termination of shift fork 19, shift fork 19 is not subjected to the external force effect yet, power supply output electrode 3 all the time with power supply input electrode 1 from, realize power supply output electrode 2 continued powers.

Embodiment 2, in conjunction with Fig. 7, the rotation external knob makes gear 4 rotate, make a termination of shift fork 7 and a termination of shift fork 19 all climb up on the arc shape 18 of gear 4, at this moment external knob is parked on household appliances another function of use to be selected relatively certainly, how gear 5 rotates like this, because the external diameter of arc shape 18 is greater than the radius of the inner ring circumference 13 of gear 5, the termination of corresponding shift fork 7 can not fallen in the breach 14 certainly, and because this termination of shift fork 7 is subjected to one along gear 4 radially outer power, make another termination of shift fork 7 rotate to make power supply input electrode 1 to be separated with power supply output electrode 2 but also can closure, the termination of shift fork 19 also is subjected to one along gear 4 radially outer power simultaneously, shift fork 19 also rotates and makes power supply output electrode 3 towards the 1 close and connection of power supply input electrode, realize power supply output electrode 3 continued powers, and shift fork 19 also increases the spacing between power supply output electrode 2 and the power supply input electrode 1 when rotating simultaneously.

Embodiment 3, in conjunction with Fig. 8, the rotation external knob makes gear 4 rotate, at this moment external knob is parked on the household appliances another function of use to be selected relatively certainly, make a termination of shift fork 7 between two protruding blocks 15 on gear 4 surfaces, away from the arc shape 18 of gear 4, shift fork 19 is not subjected to the external force effect at this moment yet in the termination of shift fork 19.Because gear 5 and gear 4 lip-deep protruding blocks stagger mutually, gear 5 can not move vertically, one termination of shift fork 7 is along with the rotation of gear 5 can be fallen in the breach 14 at interval, make shift fork 7 swings realize that power supply input electrode 1 and power supply output electrode 2 can disconnect and connect at interval, and power supply input electrode 1 and power supply output electrode 2 is when disconnecting, power supply input electrode 1 can not connected with power supply output electrode 3 yet, realizes power supply output electrode 2 power supply at interval.

Embodiment 4, in conjunction with Fig. 9, the rotation external knob makes gear 4 rotate, at this moment external knob is parked on the household appliances another function of use to be selected relatively certainly, make a termination of shift fork 7 between two protruding blocks 15 on gear 4 surfaces, climb up on the arc shape 18 of gear 4 termination of shift fork 19, shift fork 19 swings, make power supply output electrode 3 move to certain position towards power supply input electrode 1, simultaneously power supply output electrode 2 is away from power supply input electrode 1, and is provided with guide vane end stop 25 in the side of power supply input electrode 1 and guarantees that more power supply output electrode 2 and power supply input electrode 1 can not connect.Because gear 5 and gear 4 lip-deep protruding blocks stagger mutually, gear 5 can not move vertically, one termination of shift fork 7 is along with the rotation of gear 5 can be fallen in the breach 14 at interval, make shift fork 7 swings realize that power supply input electrode 1 and power supply output electrode 3 disconnect and connection at interval, realize having only power supply input electrode 3 power supply at interval.

Claims

1, a kind of timer, comprise a power supply input electrode (1), two power supply output electrodes (2), (3), two gears (4), (5), driving gear set (6), a shift fork (7) and timer shell (8), gear (4) and gear (5) are in axial direction superimposed, the gear termination (11) of gear (4) is connected with external knob on being located at timer shell (8), gear (5) cooperates with driving gear set (6), the inwall of timer shell (8) is provided with locating shaft (17), shift fork (7) is fixed on locating shaft (17) and goes up and can swing along locating shaft (17), it is characterized in that: it extends radially out one section arc piece (18) all edges of described gear (4), on locating shaft (17), also be coated with a shift fork (19), shift fork (19) can be swung around locating shaft (17), shift fork (19) one ends are connected with power supply output electrode (3) and interlock with power supply output electrode (2), and shift fork (19) other end is positioned at gear (4) periphery.

2, according to the described timer of claim 1, it is characterized in that: the external diameter of described arc piece (18) is more than or equal to the radius of the inner ring circumference (13) of gear (5).

3, according to claim 1 or 2 described timers, it is characterized in that: described arc piece (18) axially can be divided into two along gear (4).

4, according to the described timer of claim 1, it is characterized in that: the two ends of described shift fork (19) and the fulcrum of swinging around locating shaft (17) are not located along the same line.

5, according to the described timer of claim 1, it is characterized in that: described shift fork (19) is than the more close gear of shift fork (7) (4) side.