A time display mechanism

Abstract

This invention relates to the field of mechanical watch technology, specifically to a time display mechanism, including a watch case and a mainspring disposed within the watch case. A first, second, and third vertical shaft are fixed to the top of the mainspring. A sixth intermediate wheel is fitted onto the outer wall of the first intermediate wheel. A first intermediate shaft, distributing stress, is installed at the center point of the sixth intermediate wheel. A fourth intermediate wheel component is fitted onto the second intermediate shaft. A first small clamp is movably fitted onto the third intermediate shaft. This application achieves a double-nested, coaxial effect by setting a synchronous shaft with a circular groove at the top of the sixth intermediate wheel and also creating a groove on the synchronous shaft itself that matches the first intermediate shaft. This increases the contact area between the intermediate wheel and the shaft, distributing local stress during transmission. Even after prolonged operation, it maintains good coaxiality and rotational stability, effectively preventing eccentricity, wobbling, and premature wear, thereby extending the service life of the movement.

Description

Technical Field

[0001] This invention relates to the field of mechanical watch technology, specifically to a time display mechanism. Background Technology

[0002] As a precision mechanical timekeeping instrument, a mechanical watch stores elastic potential energy through a mainspring, which then rotates through multiple gear sets to adjust the rotation speed. Finally, the time is indicated on the dial by a hand. All mechanical watches are equipped with a winding and adjusting mechanism to facilitate time calibration during daily use.

[0003] In existing mechanical watches, the time is adjusted by using a lever (i.e., the bar) to drive the clutch wheel, the upright wheel, and the setting wheel to move the hands. However, in some mechanical watches, the bar is prone to gear damage when switching between forward and reverse directions, such as when the hands are turned in the opposite direction or the direction of the hands is changed quickly. This can even damage the fine teeth of the setting wheel, leading to asynchronous time adjustment and reduced lifespan during subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a time display mechanism to solve the problem mentioned in the background art of easily damaging the teeth when adjusting the time of a mechanical watch.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a time display mechanism, characterized in that: it includes a watch case and a mainspring disposed within the watch case, wherein the top end of the mainspring is fixed with a first vertical shaft, a second vertical shaft, and a third vertical shaft; A sixth guide wheel is fitted on the outer wall of the first vertical shaft, and the first vertical shaft for distributing and transmitting stress is installed at the center point of the sixth guide wheel; The second vertical shaft sleeve is provided with a fourth guide wheel component; The third vertical shaft is movably fitted with a first small clamping plate; A central shaft is fixed on the watch case, and a minute wheel is movably sleeved on the outer wall of the central shaft. The minute wheel consists of a column and a wheel. The column is fixed at the center point of the top of the wheel. A minute hand is fixed on the outer wall of the column. A dial is provided on the watch case, and the dial is fixed to the watch case by dial screws. A synchronous gear plate is welded and fixed to the outer wall of the column. The synchronous gear plate meshes with the sixth guide wheel to transmit the driving force to the guide wheel. The watch case is provided with a lever plate component, and a clutch wheel and a vertical wheel are rotatably mounted on the housing of the lever plate component. The clutch wheel and the vertical wheel are together sleeved on the bar component. The housing of the clamping plate component is provided with a clutch lever and a pull stop. The contact surface between the clutch lever and the pull stop is provided with two oblique angles of 45 degrees and 35 degrees respectively. The part of the pull stop that contacts the clutch lever is provided with a convex angle. By contacting the convex angle on the pull stop with the oblique angles of different angles, gear shifting can be achieved, thereby obtaining different gear shifting feel in different operating directions and preventing asynchronous timing.

[0006] The first small clamping plate consists of three discs, which are welded together by two connecting rods. The three discs are sequentially mounted on the first, second, and third vertical shafts. The center point of the disc mounted on the first and second vertical shafts is provided with a vertical through hole that matches it. The bottom end of the disc used to fit the sixth guide wheel is designed to be concave, and the diameter of the disc is the same as the inner diameter of the first circular groove at the top of the sixth guide wheel, so as to avoid interference with the synchronous shaft and ensure the installation positioning accuracy.

[0007] The first small clamp plate has a matching insertion hole at the bottom of the disc for mounting on the third vertical shaft. After the third vertical shaft is inserted into the insertion hole, the height and position of the first small clamp plate are fixed.

[0008] The fourth guide wheel component includes a ring and a synchronous wheel. The ring is welded and fixed to the bottom of the synchronous wheel, and the two are coaxially installed. The synchronous gear plate meshes with the ring. Six teeth are evenly spaced on the outer wall of the synchronous wheel to achieve synchronous rotation in a six-hour cycle.

[0009] The column is fitted with an hour wheel, which completes one rotation in twelve hours. A fourth vertical axis is fixed on the watch case, and a second intermediate wheel component is fitted around the fourth vertical axis. The second intermediate wheel component is made of a geared disc and meshes with the synchronous geared disc to assist in driving the minute wheel to rotate.

[0010] The column is also fitted with a split shaft, and the outer surface of the split shaft is provided with twelve teeth. Each jump of the split shaft is one hour. An hour hand is fixed on the split shaft. The watch case is also provided with a first spring component and a second spring component. The first spring component and the second spring component are both sleeved on the outer wall of the column, which are used to store energy and trigger the sub-wheel to rotate and reliably reset after displacement.

[0011] The housing of the clamping plate component is provided with a third axle and a second axle. The third axle and the second axle are both inserted and fixed on the paddle cover. The bottom end of the paddle cover is provided with a first shifting wheel and a third shifting wheel that mesh with each other. The first shifting wheel and the third shifting wheel are respectively sleeved on the third axle and the second axle to guide the shifting wheel system to rotate horizontally.

[0012] The housing of the lever clamp component is also provided with a U-spring, which is fixed to the housing of the lever clamp component by a U-spring locking screw. The U-spring cooperates with the clutch lever to make the clutch lever fit tightly against the pull gear, ensuring the stability of the gear shifting action.

[0013] A shaft is fixed on the watch case, and a dart is movably fitted on the outer wall of the shaft. The dart meshes with a disc, which is one of the components of the minute wheel structure. A dial wheel is engaged on the outer wall of the dart to calibrate the minute wheel.

[0014] The top of the sixth roller has a circular groove, and a synchronous shaft is fixed at the center of the circular groove. The center point of the synchronous shaft has a circular groove that matches the first vertical shaft, so that the synchronous shaft rotates around the first vertical shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention creates a double-nested, coaxial effect by setting a synchronous shaft with a circular groove at the top of the sixth guide wheel and also having a groove on the synchronous shaft itself that matches the first vertical shaft. This increases the contact area between the guide wheel and the shaft, disperses local stress during transmission, and maintains good coaxiality and rotational stability even after long-term operation. It effectively prevents eccentricity, shaking, and premature wear, thereby extending the service life of the movement.

[0016] The clutch lever assembly features a dual-angle design with the lever and the clutch plate, employing angles of 45 degrees and 35 degrees. This dual-angle design allows for different contact depths and feedback forces when the lever is turned clockwise and counterclockwise, resulting in a clear gear feel and accurate shifting. Furthermore, the continuous pre-tensioning of the clutch lever by the U-spring ensures a tight fit between the clutch wheel and the vertical wheel, preventing gear damage or chipping due to reverse force during time adjustment and ensuring the synchronicity and safety of the pointer adjustment. Attached Figure Description

[0017] Figure 1 This is an exploded view of the overall structure of the present invention.

[0018] Figure 2 This is an exploded view of the clamping plate component structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the time wheel structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the needle structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the literal structure of the present invention.

[0022] Figure 6This is a schematic diagram of the split-axis structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the housing structure of the clamping plate component of the present invention.

[0024] Figure 8 This is a schematic diagram of the sixth through-wheel structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the second wheel component of the present invention.

[0026] Figure 10 This is a schematic diagram of the fourth wheel component of the present invention.

[0027] Figure 11 This is a schematic diagram of the watch case structure of the present invention.

[0028] Figure 12 This is a schematic diagram of the clutch wheel structure of the present invention.

[0029] In the diagram: 1. Minute hand; 2. Hour hand; 3. Dial screw; 4. Dial; 5. Minute pivot; 6. Hour wheel; 7. Minute wheel; 8. First small plate; 9. Second intermediate wheel assembly; 10. Fourth intermediate wheel assembly; 11. Sixth intermediate wheel; 12. Crank plate assembly; 13. Second screw; 14. Second small plate; 15. Intercalating wheel; 16. Setting wheel; 17. First spring assembly; 18. Second spring assembly; 19. Case; 20. Third axle; 21. Second axle; 22. Setting cover; 23. First setting wheel; 24. Third setting wheel; 25. Connecting axle; 26. Fourth screw; 27. Compression spring; 28. Clutch lever; 29. ​​Clutch lever spring; 30. Shift lever; 31. Clutch wheel; 32. Vertical wheel; 33. U-spring; 34. U-spring locking screw; 35. Bar assembly. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 12This invention provides a technical solution: a time display mechanism, including a watch case 19, a mainspring serving as a drive source is disposed inside the watch case 19, a first vertical shaft is spot-welded to the top of the mainspring, a sixth guide wheel 11 is sleeved on the outer wall of the first vertical shaft, a circular groove is formed at the top of the sixth guide wheel 11, a synchronous shaft is welded to the center of the circular groove, and a circular groove adapted to the first vertical shaft is also formed at the center of the synchronous shaft, so that the synchronous shaft can rotate around the first vertical shaft. Through the cooperation structure of the double groove and the first vertical shaft, the contact area is increased and the stress is distributed, so that it can still maintain stable rotation after long-term use, thereby enhancing the service life of the sixth guide wheel 11. Moreover, the synchronous shaft can avoid the contact area between the sixth guide wheel 11 and the synchronous shaft being too small, which would prevent the smooth rotation from being maintained during long-term use.

[0032] A second vertical shaft is spot-welded to the case 19. The second vertical shaft is located to the left of the first vertical shaft. A fourth guide wheel component 10 is fitted around the second vertical shaft. The fourth guide wheel component 10 includes a ring and a synchronous wheel. The ring is welded and fixed to the bottom of the synchronous wheel. The two are coaxially installed to ensure the coaxiality of the transmission.

[0033] A third vertical shaft is spot-welded to the case 19. A first small clamping plate 8 is movably mounted on the third vertical shaft. The first small clamping plate 8 consists of three discs, which are connected by two connecting rods. The three discs are sequentially mounted on the first, second, and third vertical shafts. The discs mounted on the first and second vertical shafts have vertical through holes at their centers that match the corresponding vertical shafts. This facilitates the installation of the sixth guide wheel 11 and the fourth guide wheel component 10 after the first small clamping plate 8 is installed and fixed. The bottom end of the disc in the first small clamping plate 8 that fits the sixth guide wheel 11 is designed with a concave shape, and the diameter of the disc matches the inner diameter of the circular groove at the top of the sixth guide wheel 11. When the disc is placed into the groove, the concave shape can avoid the synchronous shaft, preventing them from contacting each other during installation and thus preventing installation failure. This also improves the efficiency and accuracy of positioning and installing the sixth guide wheel 11.

[0034] The first small clamping plate 8 has a fitting hole at the center of the bottom of the disc for mounting on the third vertical shaft. After the third vertical shaft is inserted into the fitting hole, the height and position of the first small clamping plate 8 can be fixed.

[0035] A central shaft is fixed to the case 19 by spot welding. A wheel 7 is movably sleeved on the outer wall of the central shaft. The wheel 7 consists of a column and a disc. The column is welded to the center of the top of the disc, and both have vertical through holes that are adapted to the central shaft to ensure that the wheel 7 rotates smoothly around the central shaft.

[0036] The hour wheel 6 is mounted on the outer sleeve of the column, which is one of the components of the minute wheel 7. One rotation of the hour wheel 6 represents twelve hours. A synchronizing gear is also welded and fixed to the outer wall of the column. The synchronizing gear is on the same horizontal plane as the sixth intermediate wheel 11. The sixth intermediate wheel 11, as a driven component, rotates under the drive of the mainspring in the watch case 19, which in turn drives the synchronizing gear, causing the column and the wheel to rotate, so that the minute wheel 7 can rotate once per hour.

[0037] When the hour wheel 6 is mounted outside the column of one of the components of the minute wheel 7, it is located at the top of the synchronous gear plate, and the synchronous gear plate meshes with the ring of the fourth intermediate wheel component 10, driving the synchronous wheel of the fourth intermediate wheel component 10 to rotate. The outer wall of the synchronous wheel is provided with six teeth at equal intervals, and one rotation is six hours.

[0038] A fourth vertical shaft is spot-welded to the case 19. A second gear component 9 is fitted over the fourth vertical shaft. The second gear component 9 is a geared disc structure, which meshes with the synchronous geared disc, one of the components of the sub-gear 7, and serves as a transmission component to assist in driving the sub-gear 7 to rotate.

[0039] A split shaft 5 is also fitted outside the pillar of the hour wheel 7. The outer surface of the split shaft 5 has twelve teeth. Each tick represents one hour. The split shaft 5 is located at the top of the hour wheel 6 and rotates with the hour wheel 7.

[0040] The watch case 19 has a dial 4, which is fixed to the watch case 19 by dial screws 3. The top of the dial is marked with hour markers. The minute hand 1 is fixed to the column of the minute wheel 7 by interference fit, and the hour hand 2 is fixed to the minute axis 5 by interference fit, which are used to indicate the time and minutes.

[0041] The watch case 19 is also provided with a first spring plate component 17 and a second spring plate component 18. The first spring plate component 17 is made of a bent plate and has a vertical through hole with the same diameter as the column of the minute wheel 7. After being sleeved on the column, it axially positions the minute wheel 7 and is fixed to the watch case 19 by screws. The second spring plate component 18 is also made of a bent plate and is sleeved on the outer wall of the column. It is used to store energy and cause the minute wheel 7 to jump and displace when triggered, and assists in resetting after displacement.

[0042] A shaft is spot-welded to the case 19. A cross wheel 15 is movably fitted on the outer wall of the shaft. The cross wheel 15 meshes with the disc of the minute wheel 7. A setting wheel 16 also meshes on its outer wall. By turning the setting wheel 16, the cross wheel 15 can be driven, which in turn drives the minute wheel 7 to rotate, thus achieving time calibration.

[0043] A second small clamping plate 14 is provided on the watch case 19, which is fixed to the watch case 19 by several screws and is located at the bottom of the clamping plate component 12. The second small clamping plate 14 is also sleeved on the outer wall of the column of the minute wheel 7, which plays a role in auxiliary positioning and support.

[0044] The watch case 19 is provided with a crown plate component 12, the housing of which is a flat structure. The housing is fixed to the watch case 19 by a second screw 13. The housing of the crown plate component 12 is provided with a third axle 20 and a second axle 21, which are inserted and fixed to the paddle shifter cover 22. The bottom end of the paddle shifter cover 22 is provided with a first shifting wheel 23 and a third shifting wheel 24 that mesh with each other. They are respectively sleeved on the third axle 20 and the second axle 21, and are supported at the bottom by a mating axle 25 to ensure that the two shifting wheels rotate horizontally. The mating axle is fixed to the housing of the crown plate component 12 by spot welding.

[0045] The clamping plate component 12 is also equipped with a U-shaped clutch spring 29, in which a clutch rod 28 is placed. The clutch rod 28 is equipped with a compression spring 27, which is fixed to the housing by a fourth screw 26. That is, when the fourth screw 26 is turned and the clamping plate component 12 moves downward, the compression spring 27 is clamped and fixed by the clamping space formed between the end of the fourth nut 26 and the housing of the clamping plate component 12. A pull stop 30 is attached to the clutch rod 28. A fixed shaft is spot-welded to the housing of the clamping plate component 12. The pull stop 30 is fitted onto the outer wall of the fixed shaft to achieve rotation. The contact surfaces of the clutch rod 28 and the pull stop 30 are respectively provided with 45-degree and 35-degree bevels. The contact parts of the pull stop 30 and the clutch rod 28 are provided with corresponding convex angles. The shifting operation is achieved by the cooperation of the convex angles with the bevels of different angles.

[0046] A U-spring 33 is provided on the housing of the clamping plate component 12. The U-spring 33 is fixed to the housing of the clamping plate component 12 by a U-spring locking screw 34, and the U-spring 33 cooperates with the clutch lever spring 29 so that the clutch lever 28 can be tightly attached to the pull stop 30.

[0047] A clutch wheel 31 and a vertical wheel 32 are rotatably mounted on the housing of the clamping plate component 12. The clutch wheel 31 and the vertical wheel 32 are together fitted on the bar component 35. The bar component 35 passes through a transverse through hole pre-drilled on the clamping plate component 12 to match it, so that the clutch wheel 31 and the vertical wheel 32 can rotate smoothly with the bar component 35.

[0048] The component 35 of the bar consists of a hand dial and a rotating shaft. The rotating shaft is welded and fixed to the hand dial and extends into the housing of the handle plate component 12. This mechanism is used for time jump display. When the drive wheel 4 reaches the highest energy storage, it releases potential energy instantaneously, causing the sub-wheel 7 to jump one step. The first spring component 17 and the second spring component 18 ensure that the sub-wheel 7 returns to its original position after displacement. The handle plate component 12 is turned clockwise and slipped counterclockwise to prevent asynchrony when adjusting the time.

[0049] In use, the invention releases energy from the mainspring to drive the sixth gear 11 to rotate. At this time, the minute wheel 7 and the hour wheel 6 are driven by the synchronizing gear to achieve time display. When the time needs to be adjusted, the operating bar 35 shifts gears through the engagement of the pull bar 30 and the inclined surface of the clutch lever 28, driving the clutch wheel 31 and the upright wheel 32. Finally, the minute wheel 7 is driven by the setting wheel train to achieve pointer calibration. During this process, the bar 35 in the clamp plate component 12 can ensure that the additional intervention effect can drive the pointer to move. When operating counterclockwise, slippage can prevent asynchrony and protect the movement. The first spring component 17 and the second spring component 18 provide a reset effect after the minute wheel 7 jumps to ensure timekeeping accuracy and protect the small teeth on the outer wall of the setting wheel train's gear plate.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A time display mechanism, characterized in that: The watch includes a watch case and a mainspring disposed inside the watch case, wherein the top end of the mainspring is fixed with a first vertical shaft, a second vertical shaft, and a third vertical shaft; A sixth guide wheel is fitted on the outer wall of the first vertical shaft, and the first vertical shaft for distributing and transmitting stress is installed at the center point of the sixth guide wheel; The second vertical shaft sleeve is provided with a fourth guide wheel component; The third vertical shaft is movably fitted with a first small clamping plate; A central shaft is fixed on the watch case, and a minute wheel is movably sleeved on the outer wall of the central shaft. The minute wheel consists of a column and a wheel. The column is fixed at the center point of the top of the wheel. A minute hand is fixed on the outer wall of the column. A dial is provided on the watch case, and the dial is fixed to the watch case by dial screws. A synchronous gear plate is welded and fixed to the outer wall of the column. The synchronous gear plate meshes with the sixth guide wheel to transmit the driving force to the guide wheel. The watch case is provided with a lever plate component, and a clutch wheel and a vertical wheel are rotatably mounted on the housing of the lever plate component. The clutch wheel and the vertical wheel are together sleeved on the bar component. The housing of the clamping plate component is provided with a clutch lever and a pull stop. The contact surface between the clutch lever and the pull stop is provided with two oblique angles of 45 degrees and 35 degrees respectively. The part of the pull stop that contacts the clutch lever is provided with a convex angle. By contacting the convex angle on the pull stop with the oblique angles of different angles, gear shifting can be achieved, thereby obtaining different gear shifting feel in different operating directions and preventing asynchronous timing.

2. The time display mechanism according to claim 1, characterized in that: The first small clamping plate consists of three discs, which are welded together by two connecting rods. The three discs are sequentially mounted on the first, second, and third vertical shafts. The center point of the disc mounted on the first and second vertical shafts is provided with a vertical through hole that matches it. The bottom end of the disc used to fit the sixth guide wheel is designed to be concave, and the diameter of the disc is the same as the inner diameter of the first circular groove at the top of the sixth guide wheel, so as to avoid interference with the synchronous shaft and ensure the installation positioning accuracy.

3. A time display mechanism according to claim 2, characterized in that: The first small clamp plate has a matching insertion hole at the bottom of the disc for mounting on the third vertical shaft. After the third vertical shaft is inserted into the insertion hole, the height and position of the first small clamp plate are fixed.

4. A time display mechanism according to claim 1, characterized in that: The fourth guide wheel component includes a ring and a synchronous wheel. The ring is welded and fixed to the bottom of the synchronous wheel, and the two are coaxially installed. The synchronous gear plate meshes with the ring. Six teeth are evenly spaced on the outer wall of the synchronous wheel to achieve synchronous rotation in a six-hour cycle.

5. A time display mechanism according to claim 1, characterized in that: The column is fitted with an hour wheel, which completes one rotation in twelve hours. A fourth vertical axis is fixed on the watch case, and a second intermediate wheel component is fitted around the fourth vertical axis. The second intermediate wheel component is made of a geared disc and meshes with the synchronous geared disc to assist in driving the minute wheel to rotate.

6. A time display mechanism according to claim 1, characterized in that: The column is also fitted with a split shaft, and the outer surface of the split shaft is provided with twelve teeth. Each jump of the split shaft is one hour. An hour hand is fixed on the split shaft. The watch case is also provided with a first spring component and a second spring component. The first spring component and the second spring component are both sleeved on the outer wall of the column, which are used to store energy and trigger the sub-wheel to rotate and reliably reset after displacement.

7. A time display mechanism according to claim 1, characterized in that: The housing of the clamping plate component is provided with a third axle and a second axle. The third axle and the second axle are both inserted and fixed on the paddle cover. The bottom end of the paddle cover is provided with a first shifting wheel and a third shifting wheel that mesh with each other. The first shifting wheel and the third shifting wheel are respectively sleeved on the third axle and the second axle to guide the shifting wheel system to rotate horizontally.

8. A time display mechanism according to claim 7, characterized in that: The housing of the lever clamp component is also provided with a U-spring, which is fixed to the housing of the lever clamp component by a U-spring locking screw. The U-spring cooperates with the clutch lever to make the clutch lever fit tightly against the pull gear, ensuring the stability of the gear shifting action.

9. A time display mechanism according to claim 1, characterized in that: A shaft is fixed on the watch case, and a dart is movably fitted on the outer wall of the shaft. The dart meshes with a disc, which is one of the components of the minute wheel structure. A dial wheel is engaged on the outer wall of the dart to calibrate the minute wheel.

10. A time display mechanism according to claim 1, characterized in that: The top of the sixth roller has a circular groove, and a synchronous shaft is fixed at the center of the circular groove. The center point of the synchronous shaft has a circular groove that matches the first vertical shaft, so that the synchronous shaft rotates around the first vertical shaft.

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