A watch movement with flyback function

Abstract

The application relates to a watch core with a fly-back function, and relates to the field of mechanical watch cores.The watch core with the fly-back function comprises a dial, a heart-shaped cam is arranged on the dial, the heart-shaped cam is fixed on a timing shaft, and the heart-shaped cam is provided with an arc surface section and a plane section; a zero-return rod is rotationally arranged on the dial, the zero-return rod is provided with an inclined surface section, a driving piece for driving the zero-return rod to rotate is arranged on the dial, and the inclined surface section of the zero-return rod is combined with the plane section of the heart-shaped cam when the timing shaft is at zero position. In the application, the cooperation of various components can realize the rapid zero return of the timing shaft in the timing process of the timing shaft, thereby improving the convenience of the watch core and further improving the experience of users.

Description

Technical Field

[0001] This application relates to the field of mechanical watch movements, and more particularly to a watch movement with a flyback function. Background Technology

[0002] The watch movement is a crucial component of a mechanical watch. A main shaft rotates on the dial of the movement, and a mainspring inside the movement powers the main shaft. An indicator hand is mounted on the main shaft, and the dial is decorated with circumferential scale markings that correspond to the indicator hand. As the main shaft rotates, the indicator hand follows it. When the indicator hand reaches different positions, the corresponding reading on the scale indicates the current time. This process is how a mechanical watch tells time.

[0003] With the continuous development of mechanical watches, in addition to telling time, extra functions have gradually increased, with chronograph function being a common auxiliary function. The watch movement has a chronograph shaft that rotates and rotates on the chronograph wheel, on which a chronograph hand is mounted. Initially, the chronograph hand points to the zero position on the chronograph wheel. When using the chronograph function, pressing the start / stop button on the watch causes the chronograph shaft to rotate, which in turn moves the chronograph hand. When the timer ends, the user must press the start / stop button again to stop the chronograph hand. The range of the chronograph hand's rotation during this period corresponds to the markings on the chronograph wheel, indicating the time elapsed. After each timer cycle, pressing the reset button resets the chronograph hand, allowing it to start the next timer cycle.

[0004] While the above functions can keep time, they cannot quickly reset the timer pointer. After the timer pointer starts spinning, the start / stop button must be pressed again to stop it, and then the reset button must be pressed to reset the timer pointer to zero, which is somewhat inconvenient. Summary of the Invention

[0005] To address the problems existing in the above-mentioned technologies, this application provides a watch movement with a flyback function.

[0006] The watch movement with flyback function provided in this application adopts the following technical solution: A watch movement with a flyback function includes a dial with a heart-shaped cam fixed to a timing axis. The heart-shaped cam has an arc section and a flat section. A zeroing lever is rotatably mounted on the dial, and the zeroing lever has an inclined section. A driving component is provided on the dial to drive the zeroing lever to rotate. When the inclined section of the zeroing lever is in contact with the flat section of the heart-shaped cam, the timing axis is at the zero position.

[0007] By adopting the above technical solution, the chronograph axis is initially at zero and not rotating. When the mechanical watch is in chronograph mode, the chronograph axis rotates to keep time, and the beveled section of the zeroing lever does not contact the heart-shaped cam, which rotates synchronously with the chronograph axis. When it is necessary to drive the chronograph axis back to zero, the drive component drives the beveled section of the zeroing lever to rotate in a direction close to the heart-shaped cam. During the rotation of the heart-shaped cam, the beveled section contacts the arc section of the heart-shaped cam, and then drives the heart-shaped cam to rotate. When the flat section of the heart-shaped cam rotates to fit against the beveled section of the zeroing lever, the heart-shaped cam can no longer rotate, and the chronograph axis is at zero. After the chronograph axis is zeroed, the drive component drives the zeroing lever to rotate in the opposite direction, so that the beveled section moves away from the flat section of the heart-shaped cam, and the zeroing lever resets to await the next zeroing drive of the chronograph axis. The cooperation of the various components in the above process can achieve rapid zeroing of the chronograph axis during the rotation of the chronograph axis, thereby improving the convenience of the watch movement and thus improving the user experience.

[0008] Optionally, the driving component includes a driving rod slidably mounted on the dial, a fixed post being provided on the driving rod, and a zeroing rod passing through the fixed post, with the fixed post located between the inclined section and the rotation center of the zeroing rod.

[0009] By adopting the above technical solution, the sliding of the drive rod can drive the zeroing rod to rotate around its own rotation center, thereby realizing the rotation drive of the inclined section of the zeroing rod. Since the zeroing rod is connected to the drive rod through the fixed column, it is convenient to disassemble and assemble the zeroing rod and the drive rod. When the watch movement is damaged during long-term use and needs to be replaced, the damaged zeroing rod or drive rod can be replaced separately instead of replacing the whole thing, thereby reducing the cost of wear and tear.

[0010] Optionally, a limiting groove is provided on the drive rod, and a first limiting post is provided on the dial. The first limiting post is located in the limiting groove and slides in cooperation with the limiting groove.

[0011] By adopting the above technical solution, when the drive rod slides, the limiting groove slides synchronously with the drive rod, while the first limiting post is located in the limiting groove to limit the sliding range of the limiting groove. When the limiting groove slides to the end and abuts against the first limiting post, the limiting groove can no longer slide in the same direction, thereby limiting the sliding range of the drive rod, thus avoiding excessive sliding of the drive rod and improving the stability of the drive rod during the sliding process; moreover, by opening the limiting groove on the drive rod, the weight of the drive rod can also be reduced, thereby making the sliding of the drive rod more flexible.

[0012] Optionally, a reset spring is rotatably mounted on the dial, and an abutment post is mounted on the drive rod, with the reset spring abutting against the abutment post.

[0013] By adopting the above technical solution, as the inclined section of the drive rod drives the zeroing rod to slide in the direction close to the heart-shaped cam, the abutment post slides synchronously with the drive rod. During the sliding of the abutment post, the reset rod spring that abuts against the abutment post is compressed and in a torsional deformation state. Therefore, when the timing shaft returns to the zero position, the rebound of the reset rod spring will drive the abutment post to move in the opposite direction, thereby realizing the reset of the drive rod, which facilitates the reset of the zeroing rod.

[0014] Optionally, the end of the reset spring is provided with a hook-shaped part, which can abut against the abutment post.

[0015] By adopting the above technical solution, when the abutment column slides, the hook-shaped part at the end of the reset rod spring can abut against the abutment column, thereby preventing the end of the reset rod spring from disengaging from the abutment column and thus improving the stability when the reset rod spring and the abutment column are engaged.

[0016] Optionally, the reset spring includes two abutting sections that rotate synchronously around its own rotation center, and the two abutting sections abut against the fixed post and the abutting post, respectively.

[0017] By adopting the above technical solution, when the reset lever spring rotates, the two abutting sections rotate synchronously around the rotation center. One abutting section abuts against the fixed post, and the other abutting section abuts against the fixed post, so that the two abutting sections are always located between the abutting post and the fixed post. This improves the stability of the reset lever spring and prevents it from disengaging. In addition, during the entire process of the inclined section of the zeroing lever rotating along the heart-shaped cam, both abutting sections are compressed and in a state of torsional deformation. When the zeroing lever is driven to reset, the two abutting sections cooperate to drive it, thereby improving the flexibility of the zeroing lever reset process and preventing the zeroing lever from resetting itself.

[0018] Optionally, the rotation of the reset lever spring is coaxial with that of the zeroing lever, and the zeroing lever is located between the dial and the reset lever spring.

[0019] By adopting the above technical solution, the rotation of the reset lever spring and the zeroing lever is coaxial, thereby making the rotation centers of the reset lever spring and the zeroing lever in the same position. During the entire rotation process, the end of the zeroing lever located at its own rotation center is always between the zeroing lever and the dial, thereby improving the stability of the zeroing lever during rotation and preventing the zeroing lever from detaching.

[0020] Optionally, the zeroing rod is provided with a first protrusion, and the dial is provided with a second limiting post, the second limiting post abutting against the first protrusion to limit the rotation range of the first protrusion.

[0021] By adopting the above technical solution, when the inclined section of the zeroing lever rotates with the zeroing lever to fit against the flat section of the heart-shaped cam, and the timing shaft returns to the zero position, the driving component drives the zeroing lever to rotate in the opposite direction, thereby causing the inclined section of the zeroing lever to move away from the heart-shaped cam, in preparation for the next zeroing drive of the timing shaft; during the reverse rotation of the zeroing lever, when the first protrusion rotates to abut against the second limit post, the first protrusion cannot continue to rotate in the same direction, thus restricting the rotation of the zeroing lever, thereby avoiding excessive rotation of the zeroing lever, which would affect the next fit with the flat section of the heart-shaped cam.

[0022] Optionally, the dial is rotatably equipped with multiple timing axes and multiple zeroing levers, the number of zeroing levers being the same as the number of timing axes. Each timing axis is equipped with a heart-shaped cam, and the drive rod is equipped with multiple fixed posts, with each zeroing lever passing through one fixed post.

[0023] By adopting the above technical solution and setting multiple timing axes, different time data can be recorded separately. The time reading data includes hours, minutes, and seconds, so three timing axes can be set to correspond to the timing of hours, minutes, and seconds respectively. When the watch movement performs timing operation, multiple timing axes can rotate simultaneously, thereby realizing the separate recording of different time data, which makes it easier for users to view different time data in more detail. When the drive shaft slides, multiple fixed columns slide, thereby driving multiple zeroing levers to rotate synchronously. Each zeroing lever rotates along the direction close to the corresponding heart-shaped cam, thereby driving the corresponding timing axis to return to the zero position.

[0024] Optionally, the zeroing rod is provided with a second protrusion that can abut against an adjacent zeroing rod.

[0025] By adopting the above technical solution, when the zeroing lever rotates in the direction close to the heart-shaped cam following the sliding of the drive lever, the second protrusion on the zeroing lever can abut against the adjacent zeroing lever, and the subsequent rotation of the adjacent zeroing lever also pushes the second protrusion to rotate; under this setting, when the rotation of one of the zeroing levers is stuck, the rotation of the adjacent zeroing lever can be driven by the rotation of the second protrusion, thereby driving the rotation of the zeroing lever, thereby improving the flexibility of the rotation of multiple zeroing levers.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Initially, the chronograph axis is at zero and not rotating. When the watch is in chronograph mode, the chronograph axis rotates to keep time. The beveled section of the reset lever is not in contact with the heart-shaped cam, which rotates synchronously with the chronograph axis. When the chronograph axis needs to be returned to zero, the drive mechanism rotates the beveled section of the reset lever towards the heart-shaped cam. During the rotation of the heart-shaped cam, the beveled section contacts the curved section of the heart-shaped cam, which then rotates. When the flat section of the heart-shaped cam rotates to engage with the beveled section of the reset lever, the heart-shaped cam can no longer rotate, and the chronograph axis is at zero. After the chronograph axis is zeroed, the drive mechanism drives the reset lever to rotate in the opposite direction, causing the beveled section to move away from the flat section of the heart-shaped cam. The reset lever is then ready for the next zeroing drive of the chronograph axis. The coordination of the components in the above process allows for rapid zeroing of the chronograph axis during its rotation, thereby improving the convenience of the watch movement and enhancing the user experience. 2. When the inclined section of the zeroing lever rotates with the zeroing lever until it is in contact with the flat section of the heart-shaped cam, and the timing shaft returns to the zero position, the drive unit drives the zeroing lever to rotate in the opposite direction, thereby moving the inclined section of the zeroing lever away from the heart-shaped cam, in preparation for the next zeroing drive of the timing shaft; during the reverse rotation of the zeroing lever, when the first protrusion rotates to abut against the second limit post, the first protrusion cannot continue to rotate in the same direction, thus limiting the rotation of the zeroing lever, thereby preventing the zeroing lever from rotating excessively, which would affect the next contact with the flat section of the heart-shaped cam; 3. When the watch movement is performing timing operations, multiple timing axes can rotate simultaneously, thereby achieving separate recording of different time data, which makes it easier for users to view different time data in more detail. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a watch movement with a flyback function in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Dial; 2. Timing axis; 3. Heart-shaped cam; 31. Arc segment; 32. Planar segment; 4. Zeroing lever; 41. Sloping segment; 5. Driving component; 51. Driving rod; 52. Fixing post; 6. Limiting groove; 7. First limiting post; 8. First protrusion; 9. Second limiting post; 10. Reset lever spring; 11. Abutment post; 12. Hook-shaped part; 13. Abutment section; 14. Second protrusion; 15. Push lever. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0030] This application discloses a watch movement with a flyback function. (Refer to...) Figure 1The watch movement with flyback function includes a dial 1, on which three timing axes 2 are rotatably mounted. The three timing axes 2 are used to record the time changes of hours, minutes and seconds respectively. Each timing axis 2 is fixed with a heart-shaped cam 3, which has an arc section 31 and a flat section 32. Three zeroing levers 4 are rotatably mounted on the dial 1, each of which has a beveled section 41. The dial 1 is provided with a driving component 5 to drive the three zeroing levers 4 to rotate simultaneously. When the beveled section 41 of the zeroing lever 4 rotates with the zeroing lever 4 until it is in contact with the flat section 32 of the corresponding heart-shaped cam 3, the timing axis 2 on the corresponding heart-shaped cam 3 returns to the zero position.

[0031] Reference Figure 1 Each zeroing lever 4 is fixed with a first protrusion 8, which is integrally formed with the zeroing lever 4. A second limiting post 9 is provided on the dial 1. When the zeroing lever 4 is not in contact with the heart-shaped cam 3, the first protrusion 8 on the zeroing lever 4 near the second limiting post 9 abuts against the second limiting post 9. At this time, the heart-shaped cam 3 can rotate freely with the rotation of the timing shaft 2. When the inclined section 41 of the zeroing lever 4 rotates with the zeroing lever 4 until it is in contact with the flat section 32 of the heart-shaped cam 3, the timing shaft 2 returns to the zero position. Then, the driving component 5 drives the zeroing lever 4 to rotate in the opposite direction, so that the inclined section 41 of the zeroing lever 4 moves away from the heart-shaped cam 3, in preparation for the next zeroing drive of the timing shaft 2. During the reverse rotation of the zeroing lever 4, when the first protrusion 8 rotates to abut against the second limit post 9, the first protrusion 8 cannot continue to rotate in the same direction. The rotation of the zeroing lever 4 is thus restricted, thereby preventing the zeroing lever 4 from rotating excessively, which would affect the next contact with the flat section 32 of the heart-shaped cam 3.

[0032] Reference Figure 1 A push lever 15 is rotatably connected to the dial 1. The driving component 5 includes a driving rod 51 fixed to the end of the push lever 15. The driving rod 51 is slidably mounted on the dial 1. Three fixing posts 52 are fixed on the driving rod 51. The end of each zeroing lever 4 furthest from its own rotation center passes through one of the fixing posts 52. When the timing axis 2 needs to be zeroed, the push lever 15 is pressed, causing the push lever 15 to rotate around its own rotation center, thereby driving the driving rod 51 to slide. The entire driving rod 51 moves along... Figure 1 The right side slides as shown, thereby causing the three fixed columns 52 to slide simultaneously, and the three zeroing rods 4 to rotate simultaneously. The inclined section 41 of the zeroing rod 4 rotates in the direction close to the corresponding heart-shaped cam 3.

[0033] Reference Figure 1Each fixed rod is fixed with a second protrusion 14, which is integrally formed with the zeroing rod 4. When the zeroing rod 4 rotates in the direction of the heart-shaped cam 3 following the sliding of the drive rod 51, the second protrusion 14 on the zeroing rod 4 can abut against the adjacent zeroing rod 4. The subsequent rotation of the adjacent zeroing rod 4 also pushes the second protrusion 14 to rotate. Under this setting, when the rotation of one of the zeroing rods 4 is stuck, the rotation of the adjacent zeroing rod 4 can be driven by the rotation of the second protrusion 14, thereby driving the rotation of the zeroing rod 4.

[0034] Reference Figure 1 A limiting groove 6 is provided on the drive rod 51, and a first limiting post 7 is provided on the dial 1. The first limiting post 7 is located in the limiting groove 6 and slides in cooperation with the limiting groove 6. When the drive rod slides, the limiting groove 6 slides synchronously with the drive rod 51, and the first limiting post 7 is located in the limiting groove 6 to limit the sliding range of the limiting groove 6. When the limiting groove 6 slides to the end and abuts against the first limiting post 7, the limiting groove 6 can no longer slide in the same direction, thereby limiting the sliding range of the drive rod 51.

[0035] Reference Figure 1 Three abutment posts 11 are fixed on the drive rod 51. Each abutment post 11 is opposite to a fixed post 52. A reset rod spring 10 is sleeved on the rotating shaft of the zeroing rod 4. The zeroing rod 4 is located between the dial 1 and the reset rod spring 10. The reset rod spring 10 includes two abutment sections 13. The two abutment sections 13 can rotate synchronously around the rotation center of the reset rod spring 10. The two abutment sections 13 of each reset rod spring 10 are located between a fixed post 52 and an abutment post 11. The two abutment sections 13 of each reset rod spring 10 abut against a fixed post 52 and an abutment post 11, respectively. As the drive rod 51 drives the inclined section 41 of the zeroing rod 4 to slide along the direction close to the heart-shaped cam 3, the abutment post 11 slides synchronously with the drive rod 51. During the sliding of the abutment post 11, the reset rod spring 10 rotates, and the two abutment sections 13 rotate synchronously around their own rotation center. One abutment section 13 abuts against the fixed post 52, and the other abutment section 13 abuts against the abutment post 11, so that the two abutment sections 13 are always located between the abutment post 11 and the fixed post 52, thereby preventing the reset rod spring 10 from disengaging. During the entire process of the inclined section 41 of the zeroing rod 4 rotating along the direction close to the heart-shaped cam 3, the two abutment sections 13 are compressed and in a state of torsional deformation. When the zeroing rod 4 is reset, the two abutment sections 13 cooperate to drive the abutment post 11 to move in the opposite direction, thereby realizing the reset of the drive rod 51.

[0036] Reference Figure 1Each of the two abutting sections 13 has a hook-shaped portion 12 fixed at one end away from the rotation center of the reset spring 10. The two hook-shaped portions 12 abut against the abutting post 11 and the fixed post 52, respectively. When the abutting post 11 and the fixed post 52 slide along with the drive rod 51, the two hook-shaped portions 12 can abut against the abutting post 11 and the fixed post 52, thereby preventing the end of the reset spring 10 from disengaging from the abutting post 11 and the fixed post 52, and thus improving the stability of the reset spring 10 when it is engaged with the abutting post 11 and the fixed post 52.

[0037] The implementation principle of a watch movement with a flyback function in this application embodiment is as follows: Initially, the timing shaft 2 is at zero and not rotating. When the mechanical watch is in timing mode, the timing shaft 2 rotates to keep time, and the inclined section 41 of the zeroing lever 4 does not contact the heart-shaped cam 3. The heart-shaped cam 3 rotates synchronously with the timing shaft 2. When it is necessary to drive the timing shaft 2 back to zero, the user presses the push lever 15. The push lever 15 then drives the inclined section 41 of the zeroing lever 4 to rotate in a direction close to the heart-shaped cam 3. During the rotation of the heart-shaped cam 3, the inclined section 41 contacts the arc section 31 of the heart-shaped cam 3, subsequently driving the heart-shaped cam... When the heart-shaped cam 3 rotates to the point where its flat section 32 engages with the inclined section 41 of the zeroing lever 4, the heart-shaped cam 3 can no longer rotate, and the timing axis 2 is at zero. After the timing axis 2 is zeroed, the return spring 10 will drive the abutment post 11 to move in the opposite direction, thereby realizing the reverse movement of the drive lever 51. The inclined section 41 is thus moved away from the flat section 32 of the heart-shaped cam 3, and the zeroing lever 4 is reset to await the next zeroing drive of the timing axis 2. The cooperation of the various components in the above process can realize the rapid zeroing of the timing axis 2 during the rotation of the timing axis 2, thereby improving the convenience of the watch movement and thus improving the user experience.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A watch movement with a flyback function, characterized in that: The watch includes a dial (1), on which a heart-shaped cam (3) is provided. The heart-shaped cam (3) is fixed on the timing shaft (2). The heart-shaped cam (3) has an arc section (31) and a flat section (32). A zeroing lever (4) is rotatably provided on the dial (1). The zeroing lever (4) has an inclined section (41). A driving member (5) is provided on the dial (1) to drive the zeroing lever (4) to rotate. When the inclined section (41) of the zeroing lever (4) is in contact with the flat section (32) of the heart-shaped cam (3), the timing shaft (2) is at the zero position. The driving component (5) includes a driving rod (51) slidably mounted on the dial (1), a fixed post (52) is provided on the driving rod (51), the zeroing rod (4) passes through the fixed post (52), and the fixed post (52) is located between the inclined section (41) and the rotation center of the zeroing rod (4); A reset spring (10) is rotatably mounted on the dial (1), and an abutment post (11) is mounted on the drive rod (51). The reset spring (10) abuts against the abutment post (11). A hook-shaped part (12) is provided at the end of the reset spring (10), and the hook-shaped part (12) can abut against the abutment post (11). The reset spring (10) includes two abutment sections (13) that rotate synchronously around its own rotation center. The two abutment sections (13) abut against the fixed post (52) and the abutment post (11) respectively. The reset spring (10) and the zeroing rod (4) rotate on the same axis. The zeroing rod (4) is located between the dial (1) and the reset spring (10).

2. A watch movement with a flyback function according to claim 1, characterized in that: The drive rod (51) has a limiting groove (6), and the dial (1) has a first limiting post (7). The first limiting post (7) is located in the limiting groove (6) and slides in cooperation with the limiting groove (6).

3. A watch movement with a flyback function according to claim 1, characterized in that: The zeroing rod (4) is provided with a first protrusion (8), and the dial (1) is provided with a second limiting post (9). The second limiting post (9) abuts against the first protrusion (8) to limit the rotation range of the first protrusion (8).

4. A watch movement with a flyback function according to claim 1, characterized in that: The dial (1) is rotatably equipped with multiple timing axes (2) and multiple zeroing levers (4). The number of zeroing levers (4) is the same as the number of timing axes (2). Each timing axis (2) is equipped with a heart-shaped cam (3). The drive rod (51) is equipped with multiple fixing posts (52). Each zeroing lever (4) is inserted through a fixing post (52).

5. A watch movement with a flyback function according to claim 4, characterized in that: The zeroing rod (4) is provided with a second protrusion (14) that can abut against the adjacent zeroing rod (4).

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