CN205028030U - Well core type top flywheel jewel bearing supports mechanism - Google Patents
Well core type top flywheel jewel bearing supports mechanism Download PDFInfo
- Publication number
- CN205028030U CN205028030U CN201520771294.8U CN201520771294U CN205028030U CN 205028030 U CN205028030 U CN 205028030U CN 201520771294 U CN201520771294 U CN 201520771294U CN 205028030 U CN205028030 U CN 205028030U
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- China
- Prior art keywords
- top flywheel
- bearing
- jewel
- ring gear
- supporting device
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- 239000010437 gem Substances 0.000 title claims abstract description 22
- 229910001751 gemstone Inorganic materials 0.000 title claims abstract description 22
- 230000005484 gravity Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
- G04B17/285—Tourbillons or carrousels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a well core type top flywheel jewel bearing supports mechanism, including install the internal strip punch holder of watch case with fix the ring gear on the strip punch holder, the ring gear center is equipped with the one end rotary joint lower bearing of lower bearing, top flywheel shaft to link to each other with top flywheel tray, top flywheel tray and top flywheel assembly fixed connection, strip punch holder be the corresponding upper bearing that is equipped with still, and the other end and the upper bearing rotation of top flywheel shaft are connected. The beneficial effects of the utility model are that: high drilling rate and stable and reliable quality.
Description
Technical field
The utility model relates to timing instrument field, particularly relates to a kind of center type top flywheel jewel bearing supporting device.
Background technology
Top flywheel is the parts of accuracy when helping lifting to walk in high-end mechanical watch, and its principle of work is, relies on the rotation of self to offset the deviation produced by terrestrial attraction attracts when correlated parts rotates.Publication number is the Chinese patent literature of CN201060380Y, one " the mixing bearing mechanism of cantilevered top flywheel-bracket " is disclosed on May 21st, 2007, there is a cantilevered top flywheel-bracket, top flywheel-bracket tooth axle, through ball bearing, is characterized in that described top flywheel-bracket tooth shaft tail end and is located at the aiding support brill cooperation at the bottom of shell.Be that the center type top flywheel supporting device of representative generally adopts single ball bearing supporting structure with the program, top flywheel teeth axle one end press-in bearing inner ring, the other end connects top flywheel assembly, the single-ended supporting of top flywheel shaft, cantilever is obvious, ball bearing is radial, axially loaded, requires higher to bearing clearance, smooth finish, wearing quality.Part top tourbillon is due to ball bearing quality problems, and use a period of time rear bearing runway wearing and tearing, resistance increases, and causes and has a strong impact on, even stopwatch to timekeeping performance.In order to address this problem, be necessary to research and develop a kind of steady quality reliable top flywheel bearing supporting device.
Summary of the invention
The utility model technical issues that need to address are, the single-ended supporting of existing top flywheel shaft, and ball bearing is difficult to keep running accuracy, thus provides a kind of steady quality reliable top flywheel bearing supporting device.
To achieve these goals, the utility model adopts following technical scheme: a kind of center type top flywheel jewel bearing supporting device, comprise the bar train wheel bridge be arranged in Wristwatch case and the ring gear be fixed on bar train wheel bridge, ring gear center is provided with lower bearing, one end of top flywheel shaft is rotationally connected lower bearing, and is connected with top flywheel bracket tray, and top flywheel bracket tray is fixedly connected with top flywheel assembly, bar train wheel bridge is also provided with head bearing accordingly, and the other end and the head bearing of top flywheel shaft are rotationally connected.
Due to traditional single-ended supporting of top flywheel shaft, this programme, in order to overcome this defect, changes top flywheel shaft two ends into and all designs bearing and support.Adopt the supporting way of bearings at both ends, significantly improve top flywheel assembly cantilever position, eliminate the impact because of quality when ball bearing quality stability, wearing quality problem are walked wrist-watch, substantially increase job stability and the reliability of top flywheel mechanism.
As preferably, described head bearing and lower bearing spacing are greater than the distance of top flywheel assembly center of gravity to lower bearing.Such design can improve top flywheel assembly cantilever position further.
As preferably, described head bearing, lower bearing are jewel bearing.In order to reduce wearing and tearing further and improve degree of accuracy, the ball bearing used in traditional structure is replaced by jewel bearing by this programme.
As preferably, described jewel bearing is arc hole drill.The object of such design is the frictional resistance in order to reduce axial plane between top flywheel shaft and jewel bearing.
As preferably, the gap between described top flywheel bracket tray and ring gear is not less than 0.2mm.Between top flywheel bracket tray and ring gear, arrange certain gap, have two effects, one is avoid the friction between top flywheel bracket tray and ring gear, and two is can by this gap, dismounting top flywheel shaft easily.
In sum, the beneficial effects of the utility model are: steady quality is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 train wheel bridge, 2 ring gears, 3 top flywheel shafts, 4 head bearings, 5 lower bearings, 6 top flywheel bracket trays, 7 top flywheel assemblies (dot-dash wire frame inside point), 8 ring gear screws, 9 pallet screws.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
Embodiment as shown in Figure 1, be a kind of center type top flywheel jewel bearing supporting device, comprise the bar train wheel bridge 1 be arranged in Wristwatch case, bar train wheel bridge is provided with head bearing 4.It is fixing that ring gear 2 realizes with bar train wheel bridge by ring gear screw 8, and ring gear center is provided with lower bearing 5.The head bearing of this example and lower bearing are arc hole drill jewel bearing.Top flywheel shaft 3 upper end and head bearing are rotationally connected, and lower end and lower bearing are rotationally connected, and lower end also with top flywheel bracket tray 6 is connected, and top flywheel bracket tray is connected with top flywheel assembly 7 by pallet screw 9.
Before ring gear assembling, the lower end of top flywheel shaft is in advance through ring gear center lower bearing and top flywheel bracket tray close-fitting, and top flywheel assembly pallet screw is fixed on top flywheel bracket tray; After ring gear assembling, the upper end of top flywheel shaft is supported by jewel bearing on bar train wheel bridge, change the supporting of the list of conventional ball bearings into two supports, the obvious cantilever position improving top flywheel assembly, for reducing friction radius, leave gap between top flywheel bracket tray and ring gear, do not participate in axial location, top flywheel shaft end play is located by the jewel bearing at upper and lower two ends.
A kind of center type top flywheel jewel bearing supporting device of this example, the double-support mechanism of two jewel bearings is adopted to replace single supporting device of conventional center formula top flywheel ball bearing, not only eliminate ball bearing quality stability, the impact of wearing quality problem quality when wrist-watch is walked, more because the end bearing top flywheel shaft changes two supports into, the obvious cantilever position improving top flywheel assembly, substantially increases job stability and the reliability of top flywheel mechanism.
Claims (5)
1. a center type top flywheel jewel bearing supporting device, comprise the bar train wheel bridge (1) be arranged in Wristwatch case and the ring gear (2) be fixed on bar train wheel bridge, ring gear center is provided with lower bearing (5), one end of top flywheel shaft (3) is rotationally connected lower bearing, and be connected with top flywheel bracket tray (6), top flywheel bracket tray is fixedly connected with top flywheel assembly (7), it is characterized in that, bar train wheel bridge is also provided with head bearing (4) accordingly, and the other end and the head bearing of top flywheel shaft are rotationally connected.
2. a kind of center type top flywheel jewel bearing supporting device according to claim 1, it is characterized in that, described head bearing and lower bearing spacing are greater than the distance of top flywheel assembly center of gravity to lower bearing.
3. a kind of center type top flywheel jewel bearing supporting device according to claim 1 and 2, it is characterized in that, described head bearing, lower bearing are jewel bearing.
4. a kind of center type top flywheel jewel bearing supporting device according to claim 3, it is characterized in that, described jewel bearing is arc hole drill.
5. a kind of center type top flywheel jewel bearing supporting device according to claim 1 and 2, it is characterized in that, the gap between described top flywheel bracket tray and ring gear is not less than 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771294.8U CN205028030U (en) | 2015-09-30 | 2015-09-30 | Well core type top flywheel jewel bearing supports mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771294.8U CN205028030U (en) | 2015-09-30 | 2015-09-30 | Well core type top flywheel jewel bearing supports mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028030U true CN205028030U (en) | 2016-02-10 |
Family
ID=55260551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520771294.8U Active CN205028030U (en) | 2015-09-30 | 2015-09-30 | Well core type top flywheel jewel bearing supports mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028030U (en) |
-
2015
- 2015-09-30 CN CN201520771294.8U patent/CN205028030U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |