CN214378224U - Time mutation structure of timer - Google Patents
Time mutation structure of timer Download PDFInfo
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- CN214378224U CN214378224U CN202120721008.2U CN202120721008U CN214378224U CN 214378224 U CN214378224 U CN 214378224U CN 202120721008 U CN202120721008 U CN 202120721008U CN 214378224 U CN214378224 U CN 214378224U
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- time
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- ratchet wheel
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- 230000035772 mutation Effects 0.000 title claims description 10
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
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- 238000001125 extrusion Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
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Abstract
The utility model relates to a time sudden change structure of timer, the utility model discloses a change gear switching module can change the rotational speed of timing adjusting gear, when the second gear does not have the ratchet, fourth gear and third gear can fasten integratively, and the three rotational speed is unanimous, by first gear drive. When the second gear presses the ratchet wheel, the ratchet wheel can be separated from the third gear, the ratchet wheel drives the fourth gear to rotate automatically under the drive of the incomplete gear, the rotating speed is reduced, and the influence of the third gear is avoided, so that the rotating speed of the timing adjusting gear is reduced, the maximum timing time of the timer is finally improved, and the diversity requirement of a user on the timing time of the timer is met.
Description
Technical Field
The utility model relates to a technical field of timer, in particular to time sudden change structure of timer.
Background
The rotational speed of the present timer on the market is more single, and after timing, the gear rotates according to the rotational speed that designs well and does not have the change always, leads to the time scale scope that can set for on the timer too little, can't satisfy user's variety demand, and the user has different demands to the operating time with electrical apparatus, and along with the consumer pursues product function diversification, prior art can't satisfy this requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a time mutation structure of timer that can realize the variable speed, increase timing time scope, satisfy the user to the diversified demand of time size.
The purpose of the utility model is realized like this:
the utility model provides a time sudden change structure of timer, includes the shell, be equipped with timing control gear, variable speed depression bar, first gear, second gear and variable speed gear switching subassembly in the shell, variable speed depression bar's middle part rotates to be connected on the shell, variable speed depression bar's first end is equipped with the slope, variable speed depression bar's second end is equipped with pulls dials the structure, variable speed gear switching subassembly includes that third gear, fourth gear, ratchet, spring and jump ring constitute, second gear, third gear and fourth gear from top to bottom set gradually and coaxial setting, the second gear slides from top to bottom and sets up in the shell, the top of first gear is equipped with incomplete gear, incomplete gear and second gear engagement, first gear and third gear engagement.
The spring is arranged between the second gear and the ratchet wheel, a plurality of first ratchets are arranged on the lower end face of the second gear at annular intervals, a plurality of second ratchets are arranged on the upper end face of the ratchet wheel corresponding to the first ratchets at annular intervals, the fourth gear is connected with the ratchet wheel, the ratchet wheel is arranged on the third gear, the clamp spring is arranged between the third gear and the ratchet wheel and is connected with the third gear and the ratchet wheel, the top of the second gear is provided with a driven lug, and the driven lug is close to or abutted against a slope.
The utility model can be further improved as follows.
The timing adjusting gear is characterized in that a pressure lever toggle groove surrounding the center of the timing adjusting gear is arranged on the surface of the timing adjusting gear, a pulling structure is located in the pressure lever toggle groove, the pressure lever toggle groove pulls a variable speed pressure lever to rotate, the pressure lever toggle groove comprises a small-diameter arc section, a sudden change section and a large-diameter arc section which are sequentially communicated, the length and the diameter of the large-diameter arc section are larger than those of the small-diameter arc section, the inner end of the sudden change section is communicated with one end of the small-diameter arc section, and the large-diameter arc section is communicated with the outer end of the sudden change section.
The tension pulling structure is a convex column, and the convex column extends into the pressure lever pulling groove.
The first end of the variable speed pressure lever is provided with an arc-shaped guide groove, and the arc-shaped guide groove is positioned beside a slope.
The arc-shaped guide groove is arc-shaped, and the rotation center of the variable speed pressure lever and the circle center of the arc-shaped guide groove are concentrically arranged.
The shell is provided with a second central shaft, the middle part of the variable speed pressure lever is provided with a sleeve, and the sleeve is sleeved on the second central shaft of the shell.
Be equipped with first center pin on the shell, second gear, third gear and fourth gear from top to bottom set gradually on first center pin, arc guide way is passed to first center pin.
The second gear is arranged on the first central shaft in a vertically sliding mode.
The slope is located one end of arc guide way.
And a second gear assembly is arranged between the fourth gear and the timing adjusting gear, so that power transmission between the fourth gear and the timing adjusting gear is realized.
The utility model has the advantages as follows:
the utility model discloses a change gear switches the rotational speed that the subassembly can change timing adjustment gear, when the second gear does not have the ratchet, fourth gear and third gear can fasten integratively, and the three rotational speed is unanimous, by first gear drive. When the second gear presses the ratchet wheel, the ratchet wheel can be separated from the third gear, the ratchet wheel drives the fourth gear to rotate automatically under the drive of the incomplete gear, the rotating speed is reduced, and the influence of the third gear is avoided, so that the rotating speed of the timing adjusting gear is reduced, the maximum timing time of the timer is finally improved, and the diversity requirement of a user on the timing time of the timer is met.
Drawings
Fig. 1 is a schematic structural diagram of the timer of the present invention.
Fig. 2 is a schematic structural diagram of the timer of the present invention with the housing omitted.
Fig. 3 is a schematic structural diagram of the time mutation structure of the present invention.
Fig. 4 is a schematic connection diagram of the time mutation structure, the first gear assembly and the second gear assembly of the present invention.
Fig. 5 is a schematic view of the connection at another angle of fig. 4.
Fig. 6 is a schematic structural diagram of another angle of the time mutation structure of the present invention.
Fig. 7 is a schematic structural diagram of a third angle of the time mutation structure of the present invention.
Fig. 8 is a schematic structural view of the shift lever of the present invention.
Fig. 9 is a schematic structural view of the second gear of the present invention.
Fig. 10 is a schematic view of another angle of the second gear according to the present invention.
Fig. 11 is a schematic structural view of a transmission gear switching assembly (spring omitted) according to the present invention.
Fig. 12 is an exploded schematic view of the transmission gear switching assembly of the present invention.
Fig. 13 is a cross-sectional view of the change gear switching assembly of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
In a first embodiment, as shown in fig. 1 to 13, a timer includes a housing 1, a driving motor 7, a first gear assembly 540, a second gear assembly 550, a timing adjusting rotating shaft 6, a timing adjusting gear 58, a shift lever 5, a second central shaft 56, a first gear 50, a second gear 52, and a shift gear switching assembly 53 are disposed on the housing 1, a middle portion of the shift lever 5 is rotatably connected to the housing 1, a slope 511 is disposed at a first end of the shift lever 5, a pulling structure 513 is disposed at a second end of the shift lever 5, the shift gear switching assembly 53 includes a third gear 530, a fourth gear 531, a ratchet 532, a spring 535, and a snap spring 534, the second gear 52, the third gear 530, and the fourth gear 531 are coaxially disposed from top to bottom, the second gear 52 is disposed in the housing 1 in a vertically sliding manner, the top of the first gear 50 is provided with an incomplete gear 54, the incomplete gear 54 is meshed with the second gear 52, the first gear 50 is meshed with the third gear 530, the spring 535 is arranged between the second gear 52 and the ratchet 532, a plurality of first ratchets 522 are arranged on the lower end surface of the second gear 52 at intervals in a ring shape, a plurality of second ratchets 533 are arranged on the upper end surface of the ratchet 532 at intervals in a ring shape corresponding to the first ratchets 522, the fourth gear 531 is connected with the ratchet 532, the ratchet 532 is arranged on the third gear 530, the snap spring 534 is arranged between the third gear 530 and the ratchet 532, the snap spring 534 is connected with the third gear 530 and the ratchet 532, the top of the second gear 52 is provided with a driven lug 521, and the driven lug 521 is close to or abutted against the slope 511.
As a more specific technical solution of the present invention.
Two transmission teeth are oppositely arranged on the periphery of the incomplete gear 54, so that the second gear rotates by the angle of two teeth only when the incomplete gear 54 rotates by one circle.
The timing adjusting gear 58 is arranged on the timing adjusting rotating shaft 6, a pressure lever toggle groove 580 surrounding the center of the timing adjusting gear 58 is arranged on the surface of the timing adjusting gear 58, the pulling structure 513 is located in the pressure lever toggle groove 580, the pressure lever toggle groove 580 pulls the speed change pressure lever 5 to rotate, the pressure lever toggle groove 580 comprises a small-diameter arc section 510, an abrupt change section 59 and a large-diameter arc section 57 which are sequentially communicated, the length and the diameter of the large-diameter arc section 57 are larger than those of the small-diameter arc section 510, the inner end of the abrupt change section 59 is communicated with one end of the small-diameter arc section 510, and the large-diameter arc section 57 is communicated with the outer end of the abrupt change section 59.
The tension structure 513 is a convex pillar, and the convex pillar extends into the pressing rod toggle groove 580.
An arc-shaped guide groove 512 is formed in the first end of the speed change pressure lever 5, and the arc-shaped guide groove 512 is located beside the slope 511.
The arc-shaped guide groove 512 is arc-shaped, and the rotation center of the speed change pressure lever 5 and the circle center of the arc-shaped guide groove 512 are concentrically arranged.
The housing 1 is provided with a second central shaft 56, the middle part of the shift pressure lever 5 is provided with a sleeve 514, and the sleeve 514 is sleeved on the second central shaft 56 of the housing 1.
The housing 1 is provided with a first central shaft 55, the second gear 52, the third gear 530 and the fourth gear 531 are sequentially arranged on the first central shaft 55 from top to bottom, and the first central shaft 55 penetrates through the arc-shaped guide groove.
The second gear 52 is slidably disposed on the first center shaft 55 up and down.
The slope is located one end of arc guide way.
The second gear unit 550 includes a fourth gear 551 and a fifth gear 552 which are engaged with each other, the fourth gear 551 and the fifth gear 552 are located between the fourth gear 531 and the timing adjusting gear 58, the fourth gear 551 and the fifth gear 552 are duplicate gears, the fourth gear 551 is engaged with the fourth gear 531, the fifth gear 552 is engaged with the timing adjusting gear 58, and the fifth gear 552 is provided on the second central shaft 56.
The utility model discloses a theory of operation is: when the pressure applied to the ratchet 532 is smaller than the elastic force of the snap spring 534, the ratchet 532 and the third gear 530 rotate synchronously, and when the pressure applied to the ratchet 532 is larger than the elastic force of the snap spring 534, the ratchet 532 and the third gear 530 rotate separately.
When the utility model is applied to a microwave oven, after a user sets the timing time through rotating the timing adjusting rotating shaft and sets the power of the power setting work through the power setting rotating shaft, the timing movable contact piece is pressed against one end of the timing static contact piece under the extrusion of the first pawl of the timing deflector rod, similarly, under the extrusion of the second pawl, the timing movable contact piece is pressed against the other end of the timing static contact piece, the driving motor 7 drives the first gear to rotate through the driving gear, the first gear 541, the second gear 542 and the third gear 543 in sequence, the first gear starts to drive the third gear to rotate, the incomplete gear 54 also drives the second gear to rotate intermittently, but no transmission exists between the second gear and the ratchet, the ratchet is clamped with the third gear by the snap spring, the ratchet rotates along with the third gear along with the fourth gear 531, the fourth gear 531 drives the timing adjusting rotation through the second gear assembly 550, when the timing adjustment gear is rotating, the convex post of the shift lever slides within the large diameter arc 57 of the lever toggle slot 580.
When the timing adjusting gear rotates clockwise to a certain moment, the convex column of the shift pressure lever starts to slide into the abrupt change section of the pressure lever toggle groove 580, the pressure lever toggle groove 580 pulls the second end of the shift pressure lever to move towards the center of the timing adjusting gear through the convex column, so that the shift pressure lever rotates counterclockwise, the slope 511 of the shift pressure lever 5 also rotates counterclockwise around the second central rotating shaft 56, the slope slides on the driven bump 521, the driven bump slides from the lowest point of the slope 521 to the highest point of the slope, the slope 51 presses down the driven bump 521 of the second gear 52, so that the second gear 52 slides downward, the first return spring 535 is compressed, when the convex column of the shift pressure lever slides from the abrupt change section of the pressure lever toggle groove 580 to the small-diameter arc section 510, and at the same time, when the driven bump 521 reaches the highest point of the slope 511, the first ratchet 522 on the second gear 52 is engaged with the second ratchet 532, the second gear 52 presses the ratchet 532 downwards, and the pressure applied to the ratchet 532 is greater than the elastic force of the snap spring 534 at this time, so the ratchet 532 is separated from the third gear, the second gear 52 drives the ratchet 532 to rotate, the ratchet 532 drives the fourth gear 531 to rotate by itself, and the influence of the third gear 530 is avoided.
When the shift lever 5 slides from the highest point of the slope 511 to the lowest point of the slope 511, the second gear 52 slides upward by the elastic force of the first return spring 535, and the first ratchet of the second gear 52 is separated from the second ratchet of the ratchet 532. The ratchet 532, the fourth gear 531 and the third gear 530 are tightly matched again to form a whole under the action of the elastic force of the snap spring, and rotate synchronously.
Claims (10)
1. The time mutation structure of the timer comprises a shell, wherein a speed change pressure rod, a first gear, a second gear and a speed change gear switching assembly are arranged in the shell, the middle of the speed change pressure rod is connected to the shell in a rotating mode, a slope is arranged at the first end of the speed change pressure rod, a tension pulling structure is arranged at the second end of the speed change pressure rod, the speed change gear switching assembly comprises a third gear, a fourth gear, a ratchet wheel, a spring and a clamp spring, the second gear, the third gear and the fourth gear are sequentially arranged from top to bottom and coaxially arranged, the second gear is arranged in the shell in a vertically sliding mode, an incomplete gear is arranged at the top of the first gear, the incomplete gear is meshed with the second gear, the first gear is meshed with the third gear,
the spring is arranged between the second gear and the ratchet wheel, a plurality of first ratchets are arranged on the lower end face of the second gear at annular intervals, a plurality of second ratchets are arranged on the upper end face of the ratchet wheel corresponding to the first ratchets at annular intervals, the fourth gear is connected with the ratchet wheel, the ratchet wheel is arranged on the third gear, the clamp spring is arranged between the third gear and the ratchet wheel and is connected with the third gear and the ratchet wheel, the top of the second gear is provided with a driven lug, and the driven lug is close to or abutted against a slope.
2. The time jump structure of a timer according to claim 1, wherein a timing adjusting gear is provided in the housing, a pressure lever toggle groove is provided around the center of the timing adjusting gear on the surface thereof, the pulling structure is provided in the pressure lever toggle groove, the pressure lever toggle groove pulls the speed change pressure lever to rotate, the pressure lever toggle groove comprises a small-diameter arc section, a sudden change section and a large-diameter arc section which are sequentially communicated, the length and the diameter of the large-diameter arc section are larger than those of the small-diameter arc section, the inner end of the sudden change section is communicated with one end of the small-diameter arc section, and the large-diameter arc section is communicated with the outer end of the sudden change section.
3. The time varying structure of a timer as claimed in claim 2, wherein the tension structure is a convex pillar, and the convex pillar extends into the shift groove of the compression bar.
4. The time-break structure of a timer as claimed in claim 1, wherein the first end of the variable-speed pressure lever is provided with an arc-shaped guide groove, and the arc-shaped guide groove is positioned beside the slope.
5. The time changing structure of a timer as claimed in claim 4, wherein the arc-shaped guide groove is arc-shaped, and the rotation center of the gearshift lever is concentric with the center of the arc-shaped guide groove.
6. The time mutation structure of the timer as claimed in claim 4, wherein the housing has a first central shaft, the second gear, the third gear and the fourth gear are sequentially disposed on the first central shaft from top to bottom, and the first central shaft passes through the arc-shaped guide slot.
7. The time break structure of the timer as claimed in claim 6, wherein the second gear is slidably disposed up and down on the first central shaft.
8. The time break structure of a timer according to claim 4, wherein the ramp is located at one end of the arc-shaped guide groove.
9. The time mutation structure of the timer as claimed in claim 1, wherein the housing has a second central shaft, and the middle of the variable-speed pressure lever has a sleeve, and the sleeve is sleeved on the second central shaft of the housing.
10. The time break structure of the timer as claimed in claim 1, wherein a second gear assembly is provided between the fourth gear and the timing adjustment gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120721008.2U CN214378224U (en) | 2021-04-08 | 2021-04-08 | Time mutation structure of timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120721008.2U CN214378224U (en) | 2021-04-08 | 2021-04-08 | Time mutation structure of timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378224U true CN214378224U (en) | 2021-10-08 |
Family
ID=77974111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120721008.2U Active CN214378224U (en) | 2021-04-08 | 2021-04-08 | Time mutation structure of timer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214378224U (en) |
-
2021
- 2021-04-08 CN CN202120721008.2U patent/CN214378224U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 33 Guangjiao Industrial Avenue, Guangjiao Community, Beijiao Town, Shunde District, Foshan City, Guangdong Province, 528311 Patentee after: Guangdong Minzhuo Mechanical and Electrical Co.,Ltd. Address before: 528300 No.1, south 2nd Road, Guangjiao Industrial Zone, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee before: Guangdong Minzhuo Mechanical and Electrical Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |