WO2015120767A1

WO2015120767A1 - Drive mechanism with tourbillon inclining to face plate

Info

Publication number: WO2015120767A1
Application number: PCT/CN2015/071284
Authority: WO
Inventors: 张芳
Original assignee: 天津海鸥表业集团有限公司
Priority date: 2014-02-14
Filing date: 2015-01-22
Publication date: 2015-08-20
Also published as: CN104849996A; CH710825B1; CN104849996B

Abstract

A drive mechanism with a tourbillon inclining to a face plate, the drive mechanism comprising a barrel (6) disposed between an upper clamping plate (1) and a lower clamping plate (2); the lower clamping plate (2) is installed having a two-wheel component (7), and has a small clamping plate (3) affixed; the small clamping plate (3) is formed having a beveled groove; the beveled groove is has a middle clamping plate (4) affixed; the middle clamping plate (4) is installed having a drive wheel system, a second gear shaft (11) and a second wheel piece (12); a drive chain from the barrel (6) to the second gear shaft (11) is a five-level drive; the two-wheel component (7) and a three-wheel component (8) comprise a pair of fitting bevel gears; the bevel gears are set at the second level of the main drive, and are paralleled to the barrel (6) to transmit out by a central gear, so as to drive the hour wheel (16) and the minute wheel (15) to display the time. The bevel gears are set at the second level of the main drive chain having a slower rate, thus effectively reducing the impact of the bevel gears on the drive stability of the clock movement, and reducing the sensitivity of bevel gear machining and assembly; the drive holes in the mechanism are all straight holes, thus ensuring the positioning and perpendicularity of the drive holes, having good manufacturability, being convenient to assemble, and effectively ensuring better precision of the clock movement.

Description

Transmission mechanism of tourbillon inclined to the dial surface

Technical field

The present invention relates to a mechanical watch with a tourbillon, and more particularly to a transmission mechanism in which the tourbillon is inclined to the dial surface.

Background technique

At present, a mechanical watch with a tilting tourbillon has appeared on the market, that is, the axis of rotation of the tourbillon bracket is inclined to the dial surface. The tourbillon watch is characterized in that the movement is changed from a linear transmission to a transmission with a certain angle in a certain part of the transmission chain of the original moving wheel to the balance wheel, and the bevel gear is usually used for the angle conversion. The advantage of the tilt-type tourbillon watch is that regardless of whether the watch is in a horizontal or vertical plane, the balance wheel is at an angle of less than 90° to the horizontal plane, which makes the friction loss of the plane and the facade close to each other, reducing the sensitivity of the movement to the position. Sex, which further enhances the accuracy of the watch's travel time.

A mechanical watch with an inclined tourbillon is disclosed in WO Patent Publication No. 03/017009 A2 and the patent WO Patent Publication No. 2005/043257 A1. The tourbillon has two rotary axes of AB, and the intersection is at an angle, and the motive force passes. A pair of bevel gears, namely the second wheel and the second pinion, transmit power to the tourbillon mechanism, so that the tourbillon can rotate around the B axis and revolve around the A axis, while moving at multiple angles under the driving of the two rotating shafts. The trajectory rotation, the structure can theoretically more effectively offset the isochronous error caused by the gravity of the earth. However, the disadvantage is that the axis of the balance wheel forms a conical envelope, which requires a very large volume. Due to the characteristics of the bevel gear itself, the requirement of the bevel gear for the bevel gear is very high, which will affect the stability of the movement of the movement. .

EP Patent Publication No. 1564608A2 discloses a tilting tourbillon having a structure similar to that of WO 03/017009 A2, in which a pair of bevel gears are arranged on the second wheel and the escapement pinion, in addition to the disadvantage of occupying a large space, the movement Sensitivity to bevel gear manufacturing design errors will be higher.

A tilting pendulum core is disclosed in CN Patent Publication No. 101606108A and WO Patent Publication No. 2012/062659 A1. Since the axial dimension of the balance wheel is small, it can be changed to be meshed at any point on the main transmission chain. Achieved, the problem is that although the tilting wheel can improve the deviation of the different positions of the movement, the offset of the earth's gravity is still lacking on the same plane, and the chute and the inclined hole on the large plate are processed and inspected. The difficulty is relatively large, the position of the transmission hole and the concentricity of the splint are not easy to guarantee, and it is easy to adversely affect the stability of the transmission system.

Summary of the invention

The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a transmission mechanism in which the structure of the tourbillon is inclined to the dial surface.

The technical solution adopted by the present invention is: a transmission mechanism in which the tourbillon is inclined to the dial surface, comprising: a strip box disposed between the upper clamping plate and the lower clamping plate; the lower clamping plate is provided with two wheel parts and fixed with a small clamping plate a small groove formed on the small plate, a middle plate is fixedly mounted on the inclined groove, a three-wheel member, a four-wheel member, a five-wheel member, a second pinion and a second wheel plate mounted on the middle plate; the barrel The transmission chain to the second gear is a five-stage transmission, and the two-wheel component and the three-wheel component include a pair of matched bevel gears, and the bevel gears are disposed in the second stage of the main transmission, and are transmitted in parallel by the barrels. The center gear, which in turn drives the hour and minute wheels, displays the time.

The three-wheeled splint is mounted with a three-wheeled component and a four-wheeled component with a top-pointed gemstone, and the second-wheeled plate carries a five-wheel component and a second pinion, and the tourbillon assembly is integrated with the second pinion.

The two-wheel component comprises a small two-wheeled piece, a two-toothed shaft and a two-wheeled piece which are press-fitted together, the two-wheeled piece is engaged with the barrel; the three-wheeled part comprises a three-wheeled piece and a three-toothed shaft which are pressed together The three-toothed shaft and the small two-wheeled piece are a pair of bevel gears that mesh with each other to change the direction of the transmission chain; the four-wheel component includes a four-toothed shaft that is press-fitted into one body And the four-wheeled piece, the three-wheeled piece and the four-toothed shaft are engaged; the five-wheeled component comprises a five-wheeled piece and a five-toothed shaft which are pressed together, the four-wheeled piece meshes with the five-toothed shaft; the five-wheeled piece meshes with the second toothed shaft.

The barrel is engaged with the center wheel; the center wheel is concentrically frictionally fitted with a minute wheel, and the cross wheel member comprises a cross-wheel piece and a spanning shaft which are press-fitted together, the minute wheel meshes with the cross-wheel piece, and spans the toothed shaft The wheel is engaged; the upper end of the minute wheel is mounted with a minute hand, and the upper end of the hour wheel is fitted with a needle.

The hole is formed on the inclined groove with two holes perpendicular to the inclined groove, and the hole is provided with a bit nail tube.

a hole corresponding to a hole in the bevel groove of the small plate and a transmission straight hole are formed on the middle plate; the gemstone is mounted on the middle plate with a three-toothed shaft, a four-toothed shaft, a five-toothed shaft and a second-toothed shaft .

The three-wheeled splint cooperates with two bit nail tubes on the middle splint, and is fixed on the middle splint by screws. The three-wheel splint carries the gemstones on the three-toothed shaft and the four-toothed shaft.

The second wheel piece is fixed to the middle plate by screws, and the second wheel piece carries the gemstone of the five-toothed shaft and the second-toothed shaft.

The invention has the beneficial effects that: since the bevel gear is disposed in the second stage with a lower rate on the main transmission chain, the influence of the bevel gear on the stability of the movement of the movement is effectively reduced, and the sensitivity of the processing and assembly of the bevel gear is also reduced. Only the small splint has a bevel groove and a beveled hole, the parts are relatively small for easy processing and inspection; in addition, all the transmission holes in the mechanism are straight holes, and the conventional processing and inspection methods ensure the position and verticality of the transmission hole. As well as the concentricity of the plywood carrying the transmission wheel train, the craftsmanship is good, the assembly is convenient, and the tourbillon mechanism which effectively guarantees the movement to obtain better travel time precision.

DRAWINGS

1 is a plan view showing a transmission mechanism of a tourbillon tilted to a dial surface according to the present invention;

2 is an axial schematic view of a transmission mechanism of the tourbillon tilted to the dial surface;

Figure 3 is a perspective view of the transmission mechanism of the tourbillon tilted to the dial surface.

In the picture:

1: upper splint 2: lower splint 3: small splint 4: middle splint

5: Three-wheel splint 6: Bar box 7: Two-wheel part 8: Three-wheel part

9: Four wheel parts 10: Five wheel parts 11: Second pinion 12: Second wheel

13: Tourbillon assembly 14: center wheel 15: minute wheel 16: hour wheel

17: Span parts 18: minute hand 19: hour hand.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

According to the introduction of the mechanical design manual, the bevel gear is characterized by low manufacturing precision and large vibration during operation, so the circumferential speed should not be too high. Since the watch mechanism is a precision instrument, the processing precision of the bevel gear and the transmission efficiency of the tooth shape have a great influence on the stability of the movement of the movement, and improper design will have a great influence on the travel time accuracy of the movement.

As shown in FIG. 1 to FIG. 3, the transmission mechanism of the tourbillon of the present invention inclined to the dial surface includes a barrel 6 disposed between the upper plate 1 and the lower plate 2; the lower plate 2 is provided with a two-wheel member 7 and a small splint 3; the small splint 3 is formed with a bevel groove, the inclined surface has two holes C1 and C2 perpendicular thereto, and each of the C1 and C2 is provided with a stud tube, and the middle splint 4 is fixedly mounted on the inclined groove The middle splint 4 is formed with a hole and a transmission straight hole which cooperate with the holes C1 and C2 on the inclined groove of the small plate; the middle plate 4 is fixed to the small plate 3 by screws; the middle plate 4 carries three wheel parts 8. A four-wheel member 9, a five-wheel member 10, a second pinion 11 and a second wheel plate 12; a three-wheeled plate 5 is mounted on the three-wheel member 8 and the four-wheel member 9, and the second wheel member 12 carries a five-wheel member 10 and a second pinion shaft 11, a tourbillon assembly 13 that is press-fitted with the second pinion shaft 11; the chain of the barrel 6 to the second gear 11 is a five-stage transmission, and the two-wheel member 7 and the three-wheel member 8 are included There is a pair of matched bevel gears, which are arranged in the second stage of the main drive and are connected in parallel by the barrel 6 The center gear is driven to drive the time and minute to display the time.

The two-wheel member 7 includes a small two-wheeled piece 7c, a two-toothed shaft 7a and a second wheeled piece 7b which are integrally pressed together, and the two-wheeled piece 7b is meshed with the barrel 6 to drive the two-toothed shaft 7a to rotate, thereby driving small The two-wheeled piece 7c rotates clockwise; the three-wheeled part 8 includes a three-wheeled piece 8b and a three-toothed shaft 8a that are press-fitted together, and the three-toothed shaft 8a and the small two-wheeled piece 7c are a pair of bevel gears that mesh with each other and change In the direction of the transmission chain, the two-toothed shaft 7a drives the three-toothed shaft 8a to rotate, thereby driving the three-wheeled piece 8b to rotate; the four-wheeled component 9 includes a four-toothed shaft 9a and a four-wheeled piece 9b which are press-fitted into one body, three-wheeled pieces 8b and four. The pinion 9a is engaged to drive the four-wheeled piece 9b to rotate; the five-wheeled component 10 includes a five-wheeled piece 10b and a five-toothed shaft 10a which are press-fitted integrally, and the four-wheeled piece 9b is engaged with the five-toothed shaft 10a to drive the five-wheeled piece 10b to rotate; The five-wheel piece 10b meshes with the second pinion shaft 11 to drive the tourbillon assembly 13 to rotate; the second pinion shaft 11 and the tourbillon assembly 13 are press-fitted integrally, and the middle clamp plate 4 is specifically mounted with a three-toothed shaft 8a, a four-toothed shaft 9a, and five teeth. a gemstone of the lower shaft tip of the shaft 10a and the second pinion shaft 11; the three-wheel splint 5 cooperates with the two bit nail tubes on the middle splint 4, and is fixed to the middle splint 4 by screws, The wheel splint 5 carries the three-toothed shaft 8a and the jewel of the shaft on the four-toothed shaft 9a; the second-wheel piece 12 is fixed to the intermediate plate 4 by screws, and the second-wheel plate 12 carries the five-toothed shaft 10a and the second-toothed shaft 11 a sharp jewel; the barrel 6 is engaged with the center wheel 14; the minute wheel 15 is concentrically frictionally integrated with the center wheel 14 and rotates clockwise; the yoke member 17 includes a nip roller 17b and an interdigitated tooth The shaft 17a is engaged with the pulley piece 17b, and meshes with the hour wheel 16 across the pinion 17a; the minute hand 18 is attached to the upper end portion of the minute wheel 15, and the needle 19 is attached to the upper end portion of the hour wheel 16.

It is worth noting that the three-wheel component 8, the four-wheel component 9, the five-wheel component 10 and the tourbillon assembly 13 are all fixed by the three-wheel splint 5, the second wheel plate 12 and the middle splint 4 via corresponding bit pins and screws. The small plate 3 is further formed with a module which can be integrally mounted to the lower plate to engage the small second wheel 7c with the three-toothed shaft 8a.

The working process of the transmission mechanism of the tourbillon inclined to the dial surface of the present invention is as follows:

As shown in FIGS. 1 to 3, under the driving of the barrel 6, the two-wheel member 7, the three-wheel member 8, the four-wheel member 9, the five-wheel member 10, and the second-toothed shaft 11 are continuously rotated about their own axes, thereby The tourbillon assembly 13 is rotated clockwise about the axis AA at a speed of one revolution per minute, and the axis AA has an angle of less than 90° with the movement dial surface. The transmission ratio of the second pinion shaft 11 to the center wheel 14 is 60:1. Under the driving of the barrel 6, the center wheel 14 rotates clockwise at a speed of one revolution per hour, and the center wheel 14 drives the minute wheel 15 by friction fit. The speed of one hour of the hour rotates clockwise and drives the minute hand 18 to indicate the time. Since the transmission ratio of the minute wheel 15 to the hour wheel 16 is 12:1, the hour wheel 16 rotates clockwise at a speed of one revolution every 12 hours and drives the hour hand. 19 indicates time.

The difference between the present invention and the prior art is that the transmission chain of the barrel to the second gear is increased from the conventional three-stage transmission to the fifth-stage transmission, and the bevel gear is disposed in the second stage of the main transmission; the central gear is transmitted in parallel from the barrel. In turn, the hour and minute wheels are displayed to display the time; the middle splint and the small splint are arranged to make part of the transmission form an integral module. The advantage of this structure is: First, the barrel-to-second gear is a speed-increasing motion. According to the characteristics of the bevel gear itself, it is placed on the second stage of the main transmission at a lower rate, and the bevel gear is reduced as much as possible. The influence of the smoothness of the transmission also reduces the sensitivity of bevel gear processing and assembly. Secondly, only the small splint has a bevel groove and a beveled hole. The parts are relatively small and easy to process and inspect. If there is a problem, the loss will not be too much. In the end, all the transmission holes are straight holes. The conventional machining and inspection methods ensure the position and verticality of the transmission holes, as well as the concentricity of the plywood carrying the transmission trains, and the processability is good and the assembly is convenient.

It should be noted that the scope of protection of the present invention is not limited to the above specific example manner. According to the basic technical idea of the present invention, it is also possible to have substantially the same structural transmission to adjust the layout of the structure. Firstly, in the embodiment of the present invention, the bevel gear or the bevel gear is disposed at any step on the main transmission, and other expressions can be used, and the object of the present invention can still be achieved. Secondly, the implementation of the present invention can adopt multiple forms of the gyro. The flywheel, adding a differential structure, can still achieve the object of the present invention; finally, the shape, position and number of changes of the splint of the present invention can still achieve the object of the present invention, as long as the person skilled in the art does not need to be creative. Labor, the embodiments that can be conceived, are all within the scope of protection of the present invention.

Claims

A transmission mechanism of a tourbillon tilted to a dial surface, characterized in that it comprises a strip box (6) disposed between the upper cleat (1) and the lower cleat (2); the lower splint (2) is mounted thereon The second wheel member (7) is fixed with a small splint (3); the small splint (3) is formed with a bevel groove, and the middle splint (4) is fixedly mounted on the inclined groove, and the three are mounted on the middle splint (4) Wheel member (8), four-wheel member (9), five-wheel member (10), second pinion (11) and second wheel plate (12); drive chain of the barrel (6) to the second gear (11) For the five-stage transmission, the two-wheel component (7) and the three-wheel component (8) include a pair of matching bevel gears, and the bevel gears are disposed in the second stage of the main transmission, by the barrel (6) The central gear is transmitted in parallel, which in turn drives the hour and minute to display the time.
The transmission mechanism of the tourbillon tilting to the dial surface according to claim 1, characterized in that the three-wheeled plate (5) is mounted with a three-wheeled member (8) and an upper shaft-pointed gemstone of the four-wheel member (9) The second wheel (12) carries a five-wheel member (10) and a second pinion (11), and a tourbillon assembly (13) that is press-fitted with the second pinion (11).
The transmission mechanism of the tourbillon inclined to the dial surface according to claim 1, wherein the two-wheel member (7) comprises a small two-wheel (7c), a two-toothed shaft (7a) and a press-fitted body. a two-wheeled piece (7b), the two-wheeled piece (7b) is engaged with the barrel (6); the three-wheeled part (8) comprises a three-wheeled piece (8b) and a three-toothed shaft (8a) which are press-fitted into one body, The three-toothed shaft (8a) and the small two-wheeled piece (7c) are a pair of bevel gears that mesh with each other to change the direction of the transmission chain; the four-wheel component (9) includes a four-toothed shaft (9a) and four wheels that are pressed together. The piece (9b), the three-wheel piece (8b) is meshed with the four-toothed shaft (9a); the five-wheeled part (10) comprises a five-wheeled piece (10b) and a five-toothed shaft (10a) which are press-fitted together, and a four-wheeled piece (four-wheeled piece ( 9b) meshes with the five-toothed shaft (10a); the five-wheeled piece (10b) meshes with the second pinion (11).
The transmission mechanism of the tourbillon tilting to the dial surface according to claim 1, wherein the barrel (6) is engaged with the center wheel (14); the center wheel (14) is concentrically frictionally fitted with the minute wheel (15) The cross-wheel member (17) includes a press-integrated cross-wheel piece (17b) and a spanning pinion (17a), the minute wheel (15) meshing with the cross-wheel piece (17b), across the pinion (17a) and The hour wheel (16) is engaged; the upper end of the minute wheel (15) is provided with a minute hand (18), and the upper end of the hour wheel (16) is fitted with a needle (19).
The transmission mechanism of the tourbillon inclined to the dial surface according to claim 1, wherein the inclined groove is formed with two holes perpendicular to the inclined groove, and the hole is provided with a bit tube.
The transmission mechanism of the tourbillon tilting to the dial surface according to claim 1, wherein the middle clamp (4) is formed with a hole corresponding to a hole in the bevel groove of the small plate and a transmission straight hole; The middle splint (4) is provided with gemstones of the lower shaft tip (8a), the four-toothed shaft (9a), the five-toothed shaft (10a), and the second-toothed shaft (11).
The transmission mechanism of the tourbillon tilting to the dial surface according to claim 1, characterized in that the three-wheel splint (5) cooperates with two bit nail tubes on the middle splint (4) and is fixed by screws On the splint (4), the three-wheeled splint (5) carries the jewels of the shaft on the three-toothed shaft (8a) and the four-toothed shaft (9a).
The transmission mechanism of the tourbillon tilting to the dial surface according to claim 1, wherein the second wheel piece (12) is fixed to the middle clamp plate (4) by screws, and the second wheel plate (12) carries five Gems of the shaft tip on the pinion (10a) and the second pinion (11).