CN102385302A - Tooth space compensation mechanism of timing mechanical device - Google Patents
Tooth space compensation mechanism of timing mechanical device Download PDFInfo
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- CN102385302A CN102385302A CN2010102720225A CN201010272022A CN102385302A CN 102385302 A CN102385302 A CN 102385302A CN 2010102720225 A CN2010102720225 A CN 2010102720225A CN 201010272022 A CN201010272022 A CN 201010272022A CN 102385302 A CN102385302 A CN 102385302A
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- lower whorl
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- positioning head
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Abstract
The invention discloses a tooth space compensation mechanism of a timing mechanical device, which comprises an upper wheel sheet, a lower wheel sheet and an adjusting spring. The upper wheel sheet and the lower wheel sheet are coaxially arranged, and the upper wheel sheet is in interference fit with the adjusting spring. The upper wheel sheet comprises a first layer gear and a second layer elastic positioning head. A through hole is formed on the lower wheel sheet for containing the adjusting spring and a second layer elastic positioning head which is respectively contacted with a limit head on the adjusting spring and the lower wheel sheet and limits a relative position of the lower wheel sheet. The tooth space compensation mechanism of the timing mechanical device has the advantages that by means of a double-layer wheel structure and adjustment of the relative position of the adjusting spring and the wheel sheets, preload and initial positions are adjusted, gear side gap in a time displaying mechanism can be removed, and starting stop after reverse dial is avoided. In addition, an overlapping structure adopted by the upper wheel sheet and the lower wheel sheet can effectively reduce occupied space, thereby increasing space utilization rate of a dial plate surface and providing more space for setting of other functions. The structure is simple in manufacture process and wider in application range, and facilitates mass production and cost control.
Description
Technical field
The present invention relates to a kind of backlash compensation mechanism of time-keeping mechanism, particularly relate to a kind of two take turns the time showing mechanism of output type movement the backlash compensation mechanism.
Background technology
In current timing field, high frequency is punctual synonym, and axially quite high two the taking turns and spread out of the formula kind of drive because the characteristic of himself structure of utilization factor; Be widely used in the middle of the design of high frequency timing machinery; But meanwhile two take turns the formula of spreading out of and also brought a lot of drawbacks, well-known, the influence of the source of error of time indicating section sideshake in gear drive in timing machinery; Every rotation 6 degree of minute wheel will be with one minute error; Such adverse effect is taken turns in the timing machinery of the formula of spreading out of more obvious two, especially take turns after the output type movement falling to dial pin when two, and bigger startup hysteresis phenomenon can appear in minute hand.Hysteresis is that running clearance causes when taking turns engagement with minute wheel with a friction young waiter in a wineshop or an inn respectively owing to the back gear sheet, needs nearly one minute because turn over the time of two pairs of running clearances, need eliminate hysteresis phenomenon.At present; Eliminate this sideshake adopt the structure of the minute wheel that floats as shown in Figure 1; Fig. 1 is the existing modular construction synoptic diagram that overcomes sideshake, and this structure comprises that transmission wheel 1 ', a friction young waiter in a wineshop or an inn take turns 2 ', the minute wheel 3 ' that floats, minute wheel 4 ', rotating shaft 5 ', back gear dead eye 6 ' and spring leaf 7 '; Said transmission wheel 1 ' is taken turns 2 ' engagement with a friction young waiter in a wineshop or an inn; Said unsteady minute wheel 3 ' respectively with a friction young waiter in a wineshop or an inn take turns 2 ' with minute wheel 4 ' engagement; A friction young waiter in a wineshop or an inn takes turns 2 ' and is sleeved on the great wheel arbor, and said rotating shaft 5 ' is the rotating shaft of minute wheel 3 ' of floating, and the lower semisection of the rotating shaft 5 ' of said unsteady minute wheel is eel-like figure shape (shown in the A-A section); Said spring leaf 7 ' is pressed on the eel-like figure place of rotating shaft 5 '; Said back gear dead eye 6 ' comes out on bottom plate, and its diameter is bigger than the diameter of rotating shaft 5 ', so minute wheel 3 ' can float; Eliminating running clearance is to lean on spring leaf 7 ' to guarantee; Because spring leaf 7 ' is pressed on the eel-like figure place of the minute wheel pivot 5 ' that floats; The back gear tooth be close to a friction young waiter in a wineshop or an inn take turns 2 ' with the gear teeth of minute wheel 4 '; Thereby eliminated back gear sheet and minute wheel 4 ' and a friction young waiter in a wineshop or an inn takes turns 2 ' engaging tooth sideshake, eliminated the minute hand that falls to dial behind the pin and started the phenomenon that lags behind.If but the elastic force of this structure spring leaf 7 ' is soft excessively, then eliminated not one minute startup hysteresis phenomenon; And spring leaf is really up to the mark; Then increased energy consumption; In addition, eliminate running clearance with the method for the back gear that floats and not only taken a large amount of watch face spaces, and the job requirement of the fixed form of its spring leaf and back gear dead eye also makes the technology difficulty of clamping plate strengthen.
The Chinese patent publication number is a kind of method of eliminating running clearance for CN 101566825A provides, and promptly through the gear of deformable profile of tooth, wherein the profile of tooth of each gear teeth all is made up of two parts; Elastic part and non-resilient part, with the process of other gearing mesh in, elastic part at first contacts with the flank of tooth of relative gear; Along with train is rotated further, the elastic part of the symmetry on same tooth contacts with the next flank of tooth of relative gear then, and produces pretightning force; Make non-resilient part and relative gear keep stable type of belt drive, like this, running clearance is just eliminated by elastic part fully; Even fall to dial pin; Because the influence of elastic part, two gears are meshing together tightly also, the startup viscous motion phenomenon after not have down fully group.But there is following shortcoming in this structure, at first elastic part elastic force pre-set through calculating, factors such as the profile through confirming in manufacture process, material, manufacturing process are fixed up; That is to say; In a single day part machines, and the size of elastic force is fixed, and is uncontrollable; This has reduced the versatility of part to a certain extent, and it is harsh that service condition becomes; Secondly; Through LIGA and electroforming, for example use the new mechanical means of chemical processes such as light shield and photosensitive polymer resin, also belong to emerging field at home, technology is still in the starting exploratory stage; Even make progress to some extent; Also be difficult to satisfy to produce in batches, and, be not suitable for eliminating running clearance complicated in the time showing mechanism the requirement of cost control.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the deficiency of prior art, and a kind of backlash compensation mechanism of time-keeping mechanism is provided.
The technical scheme that the present invention adopted is: a kind of backlash compensation mechanism of time-keeping mechanism comprises: on take turns sheet, lower whorl sheet and adjustment spring; Said going up taken turns sheet and the coaxial setting of lower whorl sheet, said wheel sheet and the adjustment spring interference fit of going up, and said upward wheel sheet comprises ground floor gear and second layer elasticity positioning head; Said lower whorl sheet is formed with through hole, holds said adjustment spring and said second layer elasticity positioning head, and said positioning head contacts with the lower whorl sheet with the spacing head of adjustment on the spring respectively, and limits the relative position of lower whorl sheet.
Through hole on the said lower whorl sheet is a convexity, and said positioning head contacts with the sidewall of dome.
The number of teeth of said upward wheel sheet and lower whorl sheet is identical with profile of tooth.
The said thickness of going up wheel sheet and the stack of lower whorl sheet is less than 0.4MM.
Said ground floor gear and second layer elasticity positioning head are one of the forming, and its material is plastics or nylon.
Said adjustment spring is a metallic elastic component.
The invention has the beneficial effects as follows: owing to adopt double-deck wheel construction,, effectively regulate pretightning force and initial position, can eliminate the running clearance in the time showing mechanism, the startup viscous motion phenomenon after having avoided falling to dial through regulating the relative position of adjustment spring and wheel; In addition,, strengthen the space availability ratio of watch face, for the setting of other functions provides more space because the upper and lower sheet of taking turns adopts overlay structure can effectively reduce shared space; This structure manufacturing process is simple, helps producing in batches, controls cost, and the scope of application is more extensive.
Description of drawings
Fig. 1 is the existing modular construction synoptic diagram that overcomes sideshake;
Fig. 2 is a kind of backlash compensation mechanism perspective exploded view of time-keeping mechanism;
Fig. 3 is a kind of floor map of backlash compensation mechanism of time-keeping mechanism;
Fig. 4 is a kind of synoptic diagram of backlash compensation mechanism principle of work of time-keeping mechanism;
Fig. 5 uses synoptic diagram for the backlash compensation mechanism in the movement of two time zones.
Among the figure:
1: on take turns sheet 1a: elasticity positioning head 2: lower whorl sheet
3: adjustment spring 3a: the spacing head of adjustment spring
Embodiment
Below by the accompanying drawing and the specific embodiment the present invention is further explained:
As shown in Figures 2 and 3, the backlash compensation mechanism of a kind of time-keeping mechanism of the present invention comprises: on take turns sheet 1, lower whorl sheet 2 and adjustment spring 3; The number of teeth of said upward wheel sheet 1 and lower whorl sheet 2 is identical with profile of tooth, and the thickness that said upward wheel sheet 1 and lower whorl sheet 2 superpose is less than 0.4MM; Saidly go up wheel sheet 1 and the 2 coaxial settings of lower whorl sheet, said wheel sheet 1 and adjustment spring 3 interference fit of going up, through adjustment spring 3 with on take turns relatively rotating of sheet 1, spacing 3a of adjustment spring makes elasticity positioning head 1a change the position, accomplishes the location to lower whorl sheet 2; The said wheel sheet 1 of going up comprises ground floor gear and second layer elasticity positioning head 1a; Said lower whorl sheet 2 is formed with through hole, and through hole is a convexity, and its shape mainly is the profile that cooperates elasticity positioning head 1a work; Hold said adjustment spring 3 and said second layer elasticity positioning head 1a; Said positioning head 1a contacts with lower whorl sheet 2 with spacing the 3a of adjustment on the spring 3 respectively, and particularly said positioning head 1a contacts with the sidewall of dome, and limits the relative position of lower whorl sheet 2; Make lower whorl sheet 2 with on to take turns sheet 1 coaxial, and can produce relative rotation and make transverse tooth thickness change (increase); Said ground floor gear and second layer elasticity positioning head 1a are formed as one, and its material is flexible members such as plastics or nylon; Said adjustment spring 3 is a metallic elastic component; Owing to be that the phenomenon that gear that flexible member occurs in operation process is stuck also can be avoided.
Mechanism of the present invention is a coaxial double-layer wheel construction; The THICKNESS CONTROL of last wheel sheet and lower whorl sheet is below 0.40mm, and vacant too much axial space, and it is few to add that plane space takies; Can too much influence not arranged, realize directly changing and eliminate hysteresis phenomenon original movement function setting.The present invention simultaneously also can be applied in the scheme that patent publication No. is CN 101566825A, and the actual transverse tooth thickness of its double-deck wheel construction can be adjusted according to the situation and the requirement of adjacent gear, and versatility is stronger.
Below in conjunction with accompanying drawing the principle of work that the present invention is used to eliminate running clearance is described:
Fig. 4 is a kind of synoptic diagram of backlash compensation mechanism principle of work of time-keeping mechanism, and is as shown in Figure 4, according to the situation of adjacent two gear tooth thickness; Rotation adjustment spring 3, spacing 3a of adjustment spring withstands the elasticity positioning head 1a of wheel sheet 1, make it to produce deformation (since elasticity adjustment spring 3 with on to take turns sheet 1 be interference fit; Only when artificial adjustment; Just can change relative position), elasticity positioning head 1a withstands lower whorl sheet 2, make lower whorl sheet 2 with respect on take turns sheet 1 and produce relative rotation; Thereby increased the actual transverse tooth thickness of gear in engagement process, reached the purpose of eliminating running clearance.Because adjustment spring 3 is elastic part with elasticity positioning head 1a, so the phenomenon that the gear that in operation process, occurs is stuck also can be avoided.
The synoptic diagram that Fig. 5 uses in the movement of two time zones for the backlash compensation mechanism.
It is worthy of note; Protection scope of the present invention is not limited to above-mentioned instantiation mode, and those skilled in the art is through reading this instructions, according to basic fundamental design of the present invention; As long as profile of tooth, structure are simply adjusted; As, with the gear that strengthens the running clearance influence, changing for this reason, the train of double-deck wheel mechanism can realize that also the present invention eliminates the hysteresis phenomenon that is caused by running clearance.In a word, as long as those of ordinary skills need not through creative work, the embodiment that can associate all belongs to protection scope of the present invention.
Claims (6)
1. the backlash compensation mechanism of a time-keeping mechanism is characterized in that, comprising: on take turns sheet (1), lower whorl sheet (2) and adjustment spring (3); Said upward wheel sheet (1) and the coaxial setting of lower whorl sheet (2), said wheel sheet (1) and adjustment spring (3) interference fit of going up, said upward wheel sheet (1) comprises ground floor gear and second layer elasticity positioning head (1a); Said lower whorl sheet (2) is formed with through hole, holds said adjustment spring (3) and said second layer elasticity positioning head (1a), said positioning head (1a) respectively with adjustment spring (3) on spacing head (3a) contact with lower whorl sheet (2), and limit the relative position of lower whorl sheet (2).
2. the backlash compensation mechanism of time-keeping mechanism according to claim 1 is characterized in that, the through hole on the said lower whorl sheet (2) is a convexity, and said positioning head (1a) contacts with the sidewall of dome.
3. the backlash compensation mechanism of time-keeping mechanism according to claim 1 is characterized in that, said upward wheel sheet (1) is identical with profile of tooth with the number of teeth of lower whorl sheet (2).
4. the backlash compensation mechanism of time-keeping mechanism according to claim 1 is characterized in that, the said thickness of going up wheel sheet (1) and lower whorl sheet (2) stack is less than 0.4MM.
5. the backlash compensation mechanism of time-keeping mechanism according to claim 1 is characterized in that, said ground floor gear and second layer elasticity positioning head (1a) are one of the forming, and its material is plastics or nylon.
6. the backlash compensation mechanism of time-keeping mechanism according to claim 1 is characterized in that, said adjustment spring (3) is a metallic elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102720225A CN102385302A (en) | 2010-09-03 | 2010-09-03 | Tooth space compensation mechanism of timing mechanical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102720225A CN102385302A (en) | 2010-09-03 | 2010-09-03 | Tooth space compensation mechanism of timing mechanical device |
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| Publication Number | Publication Date |
|---|---|
| CN102385302A true CN102385302A (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102720225A Pending CN102385302A (en) | 2010-09-03 | 2010-09-03 | Tooth space compensation mechanism of timing mechanical device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564207A (en) * | 2014-11-26 | 2015-04-29 | 中国北方发动机研究所(天津) | Timing gear transmission structure with allocable timing phase |
| CN109856947A (en) * | 2017-11-30 | 2019-06-07 | 蒙特雷布勒盖股份有限公司 | Mechanical watch movement including time mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4745823A (en) * | 1985-06-12 | 1988-05-24 | Toyota Jidosha Kabushiki Kaisha | Gear assembly adapted for mating with a third gear without backlash |
| CN1934375A (en) * | 2004-03-22 | 2007-03-21 | 米巴辛特奥地利股份有限公司 | Toothed wheel for a play-free spur gear set |
| WO2008142131A2 (en) * | 2007-05-21 | 2008-11-27 | Vcst Industrial Products | Split gear for avoiding backlash when engaging a mating gear |
| CN201507634U (en) * | 2009-08-28 | 2010-06-16 | 重庆清平机械厂 | Gap eliminating gear combination |
| CN201796232U (en) * | 2010-09-03 | 2011-04-13 | 天津海鸥表业集团有限公司 | Backlash compensating mechanism of timing mechanical device |
-
2010
- 2010-09-03 CN CN2010102720225A patent/CN102385302A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4745823A (en) * | 1985-06-12 | 1988-05-24 | Toyota Jidosha Kabushiki Kaisha | Gear assembly adapted for mating with a third gear without backlash |
| CN1934375A (en) * | 2004-03-22 | 2007-03-21 | 米巴辛特奥地利股份有限公司 | Toothed wheel for a play-free spur gear set |
| WO2008142131A2 (en) * | 2007-05-21 | 2008-11-27 | Vcst Industrial Products | Split gear for avoiding backlash when engaging a mating gear |
| CN201507634U (en) * | 2009-08-28 | 2010-06-16 | 重庆清平机械厂 | Gap eliminating gear combination |
| CN201796232U (en) * | 2010-09-03 | 2011-04-13 | 天津海鸥表业集团有限公司 | Backlash compensating mechanism of timing mechanical device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564207A (en) * | 2014-11-26 | 2015-04-29 | 中国北方发动机研究所(天津) | Timing gear transmission structure with allocable timing phase |
| CN109856947A (en) * | 2017-11-30 | 2019-06-07 | 蒙特雷布勒盖股份有限公司 | Mechanical watch movement including time mechanism |
| CN109856947B (en) * | 2017-11-30 | 2021-02-26 | 蒙特雷布勒盖股份有限公司 | Mechanical watch movement comprising a time-telling mechanism |
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Application publication date: 20120321 |