CN102620042A - Timer for instantaneous jump type valve - Google Patents
Timer for instantaneous jump type valve Download PDFInfo
- Publication number
- CN102620042A CN102620042A CN2012100802520A CN201210080252A CN102620042A CN 102620042 A CN102620042 A CN 102620042A CN 2012100802520 A CN2012100802520 A CN 2012100802520A CN 201210080252 A CN201210080252 A CN 201210080252A CN 102620042 A CN102620042 A CN 102620042A
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- pressing plate
- lever pressing
- great wheel
- cam
- timer
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Measurement Of Predetermined Time Intervals (AREA)
Abstract
The invention discloses a timer for an instantaneous jump type valve. The timer comprises a balance wheel, a clockwork spring, a head wheel shaft, a head wheel sheet, a two-wheel shaft, a cam and a lever pressing plate, wherein the clockwork spring and the head wheel shaft are connected into a whole; the head wheel sheet is sleeved on the head wheel shaft; the two-wheel shaft can be engaged with the head wheel sheet; the cam is fixed at the lower end of the head wheel shaft; the lever pressing plate is positioned below the cam; and a spring is connected to the lever pressing plate. The head wheel sheet is an incomplete tooth; and the tooth shape of the incomplete tooth is in the shape of modified cycloid. The cam is provided with a bump which extends outwards; the lever pressing plate is provided with an inclined plane structure which protrudes upwards; and the cam can drive the bump to be embedded into the inclined plane structure during rotation. At a timing moment of the timer, the cam of the head wheel shaft is completely separated from valve body control mechanisms such as the lever pressing plate without any contact or being influenced by pressure of the valve body. When the head wheel sheet is disengaged with the two-wheel shaft, the timing of the timer is ended, and the bump of the cam is embedded into the inclined plane structure in the lever pressing plate. The timer has the advantages of high precision and accuracy for timing, safety, reliability and suitability for valves of different opening and closing modes.
Description
Technical field
The present invention relates to valve body and use the timer field, particularly a kind of instantaneously changing formula valve is used timer.
Background technique
Existing valve body timer construction shortcoming is; Because the narrow limitation of part processing precision, the reliability of movement is relatively poor, during work; The gas pressure of valve body spring, fluctuation causes escapement to stop for the reaction force of timer through parts such as lever, stopping brakes easily, and timing function lost efficacy.As strengthen clockwork spring moment, and stop the clock problem midway though can partly solve, can produce simultaneously the phenomenon that the pin of escapement lever is pinned at the locking face angle of escape wheel teeth again.Because of the restoring moment of hairspring less than the pin of the escapement lever required moment of escape wheel teeth locking face that comes off, timer will stop clock when start, and no matter in any position.In addition, because the structure of timer limit, the probability of this clock start-stop is very high in from 0 to the 30 degree scope of start is about seven minutes of user's timing inside, has a strong impact on reliability of products.
Summary of the invention
In order to overcome the defective that above-mentioned existing technology exists, the present invention provides a kind of instantaneously changing formula valve to use timer, and timing is accurate, precision is high, has improved the quality of product, and the safety of products reliability is increased dramatically.
To achieve these goals, technological scheme of the present invention is following:
Instantaneously changing formula valve is used timer, comprises escapement, the clockwork spring that is connected as a single entity and great wheel axle, and cover is connected in the great wheel sheet on the said great wheel axle, with the great wheel arbor that the great wheel sheet can be meshed, is fixed on the cam and the lever pressing plate that is positioned at said cam below of great wheel axle lower end.
Be characterized in that said great wheel sheet is incomplete tooth, not exclusively the profile of tooth of tooth is for revising cycloid; Said cam is provided with an outward extending protuberance, and said lever pressing plate is provided with the ramp structure that raises up, and can drive said protuberance during the cam rotation and embed in the said ramp structure.
Further, be connected with spring on the said lever pressing plate, spring one end connects on the lever pressing plate, and the other end is connected on the mounting plate of great wheel axle, and its direction is axially consistent with the great wheel axle.
This spring produces downward thrust to the lever pressing plate, and is opposite to the action direction that the lever pressing plate produces power with the valve body inner spring.And the protuberance of above-mentioned cam is when embedding the ramp structure of lever pressing plate, the lever pressing plate produced with valve body inner spring masterpiece in the same way be used for the lever pressing plate.
Further, the other end that the inclined-plane is set on the said lever pressing plate is connected in the rotating shaft, and the lever pressing plate can be around said rotating shaft clockwise or rotate counterclockwise, thereby valve jack-up is made it to open (closing), and perhaps leaving behind makes it to close (opening).
The upper end of said great wheel axle is connected on the positioning pressuring plate, and said positioning pressuring plate is connected with valve body, through said positioning pressuring plate timer movement mechanism is fixed on the valve body.
Said lever pressing plate and rotating shaft are installed on the valve body base plate, and the ramp structure and the lever pressing plate of lever pressing plate raising are connected as a single entity.
Said great wheel sheet adopts incomplete tooth, and being divided into has toothed portion and no toothed portion, its objective is: when toothed portion and great wheel arbor engagement; This moment, valve was opened (or closing), and this timer is identical with the general timer working principle, but the cam on the great wheel axle separates with the lever pressing plate fully; Do not have any contact with the valve body control mechanism, promptly pressure changes howsoever and can not have influence on movement in the valve body, and the moment that this moment, clockwork spring sent output only provides the escapement vibration required energy; Need not overcome the extraneous uncertain resistance that increases, be substantially invariable, so the reliability of timer improves greatly; Regularly more accurate, the valve safety and reliability.
After regularly finishing, the have toothed portion and the great wheel arbor of above-mentioned great wheel sheet are just in time thrown off, and get into no toothed portion; Owing to do not meshed, with regard to fast rotation, the protuberance on it embeds in the ramp structure of lever pressing plate at the cam of following wheel shaft lower end of effect of clockwork spring; The lever pressing plate is produced and valve body inner spring power in the same way; The combination of two power, is risen thereby promote the lever pressing plate to its downward active force greater than the spring on the lever pressing plate, makes valve closing (or opening).
Working principle of the present invention is following: being made as 50 degree with the no toothed portion of great wheel sheet is the example explanation, and with the operating angle separated into two parts of timer 2 70 degree, with 220 degree regularly 60 minutes, 50 spent the switch that is used for control valve.
During start, the great wheel axle does not mesh from 0 degree great wheel sheet and great wheel arbor when 50 spend, and disengages in this process cam and lever pressing plate, and the lever pressing plate overcomes the spring pressure of valve body switch valve open (or cutting out) under spring action.
From 50 spend to 270 the degree, the great wheel axle can be threaded to the arbitrary position on demand and carry out accurate timing.At this moment great wheel sheet and great wheel arbor are in engagement, and escapement control head wheel shaft at the uniform velocity turns round.Stage when timer travel; The cam on the timer great wheel axle and the movable parts such as lever pressing plate of protuberance structure and valve body break away from fully; Have no contact, the gas pressure of valve body inner spring, fluctuation is to the not influence fully of timer core structure, and timing is accurate, precision is high; The energy that this moment, clockwork spring moment only need satisfy the normal swing of escapement gets final product, and the possibility of movement " start-stop " greatly reduces.
After regularly finishing, in 50 degree, great wheel sheet and great wheel arbor tooth drop out of gear; Be fixed with a cam on great wheel axle top; In the ramp structure of protuberance on the cam on clockwork spring moment loading insertion of following moment lever pressing plate, thereby the power that makes the lever pressing plate overcome spring rises valve closing (or opening).
The invention has the beneficial effects as follows that start stops clock and the phenomenon of stopping clock midway greatly reduces under existing part precision condition, owing to having improved quality, the safety of products reliability is largely increased.
Excessive about 30 degree of turn-knob dextrorotation are back to scale regularly again during product requirement client timing in the past, to eliminate the idle running between cam, timing wheel, can directly open to the scale of wanting timing at present, and are easy to use.
Applicability is strong, and two kinds of switching modes of valve body are respectively finger and are made as out when depressing, and are made as when upspringing when closing and depressing and are made as the pass, be made as out when upspringing, and timer construction of the present invention are all applicable.
Description of drawings
Fig. 1 is a plan view of the present invention.
Fig. 2 is the plan view corresponding with Fig. 1.
Fig. 3 is a part core section wheel train structure schematic representation among Fig. 1.
Fig. 4 is the stressed schematic representation of lever pressing plate.
Among the figure, 1, the great wheel axle, 2, the great wheel sheet, 3, great wheel arbor, 31, two take turns sheet, and 4, positioning pressuring plate, 5, spring, 6, the lever pressing plate, 61, ramp structure, 7, rotating shaft, 8, the valve body base plate, 9, cam, 91, protuberance, 10, escapement, 11, spring.
Embodiment:
Be easy to understand understanding in order to make creation characteristic of the present invention, technological means and to reach purpose, further set forth the present invention below in conjunction with specific embodiment.
Embodiment:
Referring to Fig. 1, Fig. 2 and Fig. 3; A kind of instantaneously changing formula valve is used timer; Comprise great wheel axle 1, be located at clockwork spring, escapement 10, cover in the great wheel axle 1 be connected in great wheel sheet 2 on the great wheel axle 1, with the great wheel arbor 3 that great wheel sheet 2 can be meshed, the upper end of great wheel axle 1 is connected on the positioning pressuring plate 4, also comprises cam 9 that is fixed on great wheel axle 1 lower end and the lever pressing plate 6 that is positioned at said cam 9 belows; Be connected with spring 5 on the lever pressing plate 6; Spring 5 one ends connect on the lever pressing plate 6, and the other end is connected on the mounting plate of great wheel axle 1, and its direction is axially consistent with great wheel axle 1.
Cam 9 is provided with the protuberance 91 that is connected as a single entity, and can drive said protuberance 91 during cam 9 rotations and embed in the ramp structure 61 of lever pressing plate 6.
When great wheel sheet 23 engagements of toothed portion and great wheel arbor are arranged the time, this moment, valve was opened (or closing), this timer is identical with the general timer working principle; But the cam 9 on the great wheel axle 1 separates with lever pressing plate 6 fully, does not have any contact with the valve body control mechanism, and promptly pressure changes howsoever and can not have influence on the movement wheel train structure in the valve body; The moment that this moment, clockwork spring sent output only provides escapement 10 vibrations required energy; Need not overcome the extraneous uncertain resistance that increases, be substantially invariable, so the reliability of timer improves greatly; Regularly more accurate, the valve safety and reliability.
After regularly finishing; The have toothed portion and the great wheel arbor 3 of above-mentioned great wheel sheet 2 are just in time thrown off, and get into no toothed portion, owing to do not meshed; With regard to fast rotation, the protuberance 91 on it embeds in the ramp structure 61 of lever pressing plates 6 at the cam 9 of following wheel shaft 1 lower end of effect of clockwork spring.
In conjunction with Fig. 1 and shown in Figure 4; When the protuberance of cam 9 91 embedded in the ramp structure 61 of lever pressing plates 6, lever pressing plate 6 received the effect of three power: be respectively the directed force F 2 that 11 pairs of lever pressing plates 6 of valve body inner spring make progress, and the directed force F 1 that 5 pairs of lever pressing plates of spring 6 are downward; With produce by protuberance 91 with directed force F 2 directed force F 3 in the same way; Because the power that directed force F 3 and directed force F 2 sums greater than directed force F 1, make lever pressing plate 6 overcome spring 5 rises, with valve closing (or opening).
When the timer timing; When the protuberance 91 of cam 9 breaks away from the ramp structure 61 of lever pressing plate 6; The directed force F 3 of protuberance 91 generations this moment disappears; And the directed force F 2 that 5 pairs of lever pressing plates of spring, 6 downward directed force F 1 make progress greater than 11 pairs of lever pressing plates 6 of valve body inner spring is depressed lever pressing plate 6, makes valve open (or closing).
Once more referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; Working principle of the present invention is following: being made as 50 degree with the no toothed portion of great wheel sheet 2 is the example explanation; With the operating angle separated into two parts of timer 2 70 degree, with 220 degree timings 60 minutes, 50 degree were used for the switch of control valve.
During start, great wheel axle 1 does not mesh with great wheel arbor 3 from 0 degree great wheel sheet 2 when 50 spend, and disengages gradually with lever pressing plate 6 in this process cam 9, and lever pressing plate 6 overcomes the valve body switch under spring 5 effects spring 11 pressure are valve open (or closing).
From 50 spend to 270 the degree, great wheel axle 1 can be threaded to the arbitrary position on demand and carry out accurate timing.At this moment great wheel sheet 2 is in engagement with great wheel arbor 3, and escapement control head wheel shaft 1 at the uniform velocity turns round.Stage when timer travel; The movable parts such as lever pressing plate 6 of the cam 9 on the timer great wheel axle 1 and protuberance 91 structures and valve body break away from fully; Have no contact, the gas pressure of valve body inner spring 11, fluctuation is to the not influence fully of timer core structure, and timing is accurate, precision is high; The energy that this moment, clockwork spring moment only need satisfy escapement 10 normal swings get final product, and the possibility of movement " start-stop " greatly reduces.
After regularly finishing; In 50 degree; Great wheel sheet 2 and great wheel arbor 3 tooth drop out of gears are fixed with a cam 9 on great wheel axle 1 top, in the ramp structure 61 of the protuberance 91 on the cam 9 on clockwork spring moment loading insertion of following moment lever pressing plate 6; This moment is because protuberance 91 produces directed force F 2 sums that directed force F 3 and 11 pairs of lever pressing plates 6 of valve body inner spring make progress greater than the downward directed force F 1 of 5 pairs of lever pressing plates of spring 6; The power that makes lever pressing plate 6 overcome spring 5 rises, thereby the power that makes lever pressing plate 6 overcome spring 5 rises, with valve closing (or opening).
The present invention is regularly accurate, precision is high, has improved the quality of product, and the safety of products reliability is increased dramatically.
Applicability is strong, two kinds of different switching modes of valve body, and timer construction of the present invention is all applicable.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. instantaneously changing formula valve is used timer; Comprise escapement, the clockwork spring that is connected as a single entity and great wheel axle, cover is connected in the great wheel sheet on the said great wheel axle, the great wheel arbor that can be meshed with the great wheel sheet; It is characterized in that, also comprise cam that is fixed on great wheel axle lower end and the lever pressing plate that is positioned at said cam below;
Said great wheel sheet is incomplete tooth, and not exclusively the profile of tooth of tooth is for revising cycloid; Said cam is provided with an outward extending protuberance, and said lever pressing plate is provided with the ramp structure that raises up, and can drive said protuberance during the cam rotation and embed in the said ramp structure.
2. instantaneously changing formula valve according to claim 1 is used timer, it is characterized in that, is connected with spring on the said lever pressing plate, and spring one end connects on the lever pressing plate, and the other end is connected on the mounting plate of great wheel axle, and its direction is axially consistent with the great wheel axle.
3. instantaneously changing formula valve according to claim 1 and 2 is used timer, it is characterized in that, the other end that the inclined-plane is set on the said lever pressing plate is connected in the rotating shaft, and the lever pressing plate can be around said rotating shaft clockwise or rotate counterclockwise.
4. instantaneously changing formula valve according to claim 1 is used timer, it is characterized in that the upper end of said great wheel axle is connected on the positioning pressuring plate, and said positioning pressuring plate is connected with valve body.
5. instantaneously changing formula valve body positioning work piece according to claim 3 is characterized in that said lever pressing plate and rotating shaft are installed on the valve body base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080252.0A CN102620042B (en) | 2012-03-22 | 2012-03-22 | Timer for instantaneous jump type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080252.0A CN102620042B (en) | 2012-03-22 | 2012-03-22 | Timer for instantaneous jump type valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102620042A true CN102620042A (en) | 2012-08-01 |
| CN102620042B CN102620042B (en) | 2015-07-08 |
Family
ID=46560159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210080252.0A Active CN102620042B (en) | 2012-03-22 | 2012-03-22 | Timer for instantaneous jump type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102620042B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113729617A (en) * | 2021-08-20 | 2021-12-03 | 北京鹰瞳科技发展股份有限公司 | Control method and control device for lens of fundus camera |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3461902A (en) * | 1966-06-23 | 1969-08-19 | Emhart Corp | Valve lever and latch mounting mechanisms for glassware forming machine |
| DE2712425A1 (en) * | 1977-03-22 | 1978-09-28 | Manfred Luik | Hot water central heating flow controller and timer - has water motor operated by flow to wind up spring |
| CN2511844Y (en) * | 2001-09-26 | 2002-09-18 | 黄广雄 | Safty automatic control device for gas pipe |
| CN2602242Y (en) * | 2003-03-05 | 2004-02-04 | 陈福良 | Combustion gas timer |
| KR100810115B1 (en) * | 2006-09-30 | 2008-03-07 | 김남용 | Valve switching apparatus |
| CN202510826U (en) * | 2012-03-22 | 2012-10-31 | 杭州坤瑞机电有限公司 | Timer for instantaneous jumping type valve |
-
2012
- 2012-03-22 CN CN201210080252.0A patent/CN102620042B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3461902A (en) * | 1966-06-23 | 1969-08-19 | Emhart Corp | Valve lever and latch mounting mechanisms for glassware forming machine |
| DE2712425A1 (en) * | 1977-03-22 | 1978-09-28 | Manfred Luik | Hot water central heating flow controller and timer - has water motor operated by flow to wind up spring |
| CN2511844Y (en) * | 2001-09-26 | 2002-09-18 | 黄广雄 | Safty automatic control device for gas pipe |
| CN2602242Y (en) * | 2003-03-05 | 2004-02-04 | 陈福良 | Combustion gas timer |
| KR100810115B1 (en) * | 2006-09-30 | 2008-03-07 | 김남용 | Valve switching apparatus |
| CN202510826U (en) * | 2012-03-22 | 2012-10-31 | 杭州坤瑞机电有限公司 | Timer for instantaneous jumping type valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113729617A (en) * | 2021-08-20 | 2021-12-03 | 北京鹰瞳科技发展股份有限公司 | Control method and control device for lens of fundus camera |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102620042B (en) | 2015-07-08 |
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