Single-barrel double-spring internal axial serial connection prime mover mechanism for watch

Abstract

The invention relates to a single-barrel double-spring internal axial series prime mover for a watch, and the prime mover comprises a double-layer barrel which is provided with a cavity for accommodating springs; the number of the clockwork springs is two, the clockwork springs are installed in the cavity of the double-layer strip box, and the outer ends of the two clockwork springs are connected with the double-layer strip box; the number of the strip shafts is two, the two strip shafts are rotatably installed in the middle of the double-layer strip box, and the inner ends of the two springs are connected with the two strip shafts correspondingly; the two clockwork springs and the two strip shafts are axially connected in series in the double-layer strip box to form a double-clockwork-spring prime mover mechanism with a compact structure, so that the planar and axial space of a watch movement is greatly saved, doubling storage of clockwork spring energy is realized, and the endurance time is effectively prolonged; and the structure is symmetrical, the input end and the output end are universal, energy transmission is efficient, a friction transmission structure is matched, stable operation of a multifunctional display system can be supported while accurate time indication is guaranteed, the overall performance is better, and adaptability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of watch driving systems, and in particular to a watch-use single-barrel dual-spring internal axial series driving mechanism. Background Art

[0002] The working power of a mechanical watch comes from the energy stored in the elastic deformation of the mainspring of the original driving system. The original driving system (barrel assembly) generally consists of a barrel, a mainspring, a barrel shaft, and a barrel cover (see Figure 4 During winding, external force winds the mainspring through the barrel, storing energy. During operation, the mainspring releases energy through the barrel, powering the watch. The more energy stored in the mainspring system, the longer the watch's battery life.

[0003] In order to increase the battery life of a watch, a multi-spring driving system can be designed with two or more barrel wheel assemblies connected in series, in parallel, or in series and parallel if the plane conditions allow. If the plane space is limited or there is a special requirement to connect two barrel wheel assemblies axially in series, the existing technology must use multiple peripheral parts to connect the two barrel wheel assemblies axially in series (see Figure 5 However, this method of connecting two independent box components makes the structure more complicated, increases the difficulty of manufacturing and assembly, and occupies a certain axial space, which is not conducive to the miniaturization and compact design of the overall structure. In addition, there is also the problem of limited energy storage. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology that the existing two barrel wheel assemblies connected axially in series will make the structure complicated, occupy a large axial space, and have limited energy storage, the present application provides a watch-type single barrel double mainspring internal axial series prime mover mechanism.

[0005] The present application provides a watch-use single barrel dual mainspring internal axial series driving mechanism adopting the following technical solution: A watch-use single barrel dual mainspring internal axial series driving mechanism, comprising: a double barrel with a cavity for housing the mainspring; There are two mainsprings installed in the cavity of the double-layer barrel, and the outer ends of the two mainsprings are connected to the double-layer barrel; There are two bar shafts, which are rotatably mounted in the middle of the double-layer barrel, and the inner ends of the two mainsprings are connected to the two bar shafts respectively.

[0006] By adopting the above technical solution, two mainsprings and two barrel shafts can be integrated by setting up a double-layer barrel structure, so that the two mainsprings can be connected axially in series in the double-layer barrel. This can effectively increase the total energy storage amount and extend the battery life of the watch, while avoiding the problem of requiring additional connecting components in the traditional double-barrel series structure, thereby simplifying the structure, improving reliability and saving assembly space.

[0007] Optionally, the double-layered barrel has two independent cavities inside, the two cavities are stacked along the axis of the double-layered barrel, and the two mainsprings are respectively installed in the two cavities.

[0008] By adopting the above technical solution, two independent cavities are provided inside the double-layer barrel, each accommodating two mainsprings, which can prevent interference between the two mainsprings and ensure the stability of the winding and energy release of each mainspring, thereby further improving the stability of the entire motive mechanism during operation.

[0009] Optionally, box covers are respectively provided outside the two cavities of the double-layer box.

[0010] By adopting the above technical solution, setting up a box cover not only helps to seal and protect the internal spring structure, prevent dust from entering and lubricant leakage, but also facilitates layered installation and maintenance, which is beneficial to improving the sealing and maintenance convenience of the box structure.

[0011] Optionally, the two bar shafts are coaxially and relatively rotatably mounted in the middle of the double-layer bar box.

[0012] By adopting the above technical solution, the two shafts are coaxially arranged and can rotate relative to each other, which helps to build a more compact coaxial axial series transmission structure, so that power input and output can be selected from either end, thereby enhancing the symmetry and versatility of the prime mover structure.

[0013] Optionally, outer ends of the two bar shafts are both extended toward the outside of the double-layer bar box.

[0014] By adopting the above technical solution, the outer end of the bar shaft extends to the outside of the bar box, which is convenient for direct connection with the winding structure and the output structure, reducing the number of intermediate transmission mechanisms, thereby reducing system complexity and energy transmission loss, and improving transmission efficiency.

[0015] Optionally, a barrel axle inner hook is provided in the circumferential direction of the barrel axle, a spring inner hook is provided at the inner end of the mainspring, and the mainspring inner hook and the barrel axle inner hook are connected to each other; The inner wall of the double-layer box is provided with a box outer hook, the outer end of the mainspring is provided with a mainspring outer hook, and the mainspring outer hook and the box outer hook are connected to each other.

[0016] By adopting the above technical solution, the advantages of simple and reliable structure are achieved, the fixing and disassembly of the mainspring are facilitated, the mainspring can be effectively prevented from slipping or falling off, and the stability of the energy storage and release process is ensured.

[0017] Optionally, the two mainsprings are wound in the same direction in the double-layer barrel so that the torque directions of the two mainsprings are consistent when storing and releasing energy.

[0018] By adopting the above technical solution, energy can be transferred continuously and smoothly from the input end to the output end, avoiding energy cancellation or efficiency reduction caused by inconsistent torque direction.

[0019] Optionally, one of the bar shafts is connected to the winding wheel in synchronous rotation, and the other bar shaft is connected to the output wheel in synchronous rotation. The output wheel is meshed and connected with the output wheel. One path of the output wheel transmits power to the escapement speed regulation mechanism through the transmission wheel system, and the other path of the output wheel transmits power to the drum-type multi-function digital display mechanism through the friction wheel plate and the friction wheel.

[0020] By adopting the above technical solution, on the one hand, the winding action of the two sets of mainsprings is unified through the winding wheel to ensure efficient energy storage; on the other hand, the stored energy is stably released through the output wheel and the output pass wheel, and the roller-type multi-function digital display system is driven by the friction wheel. While ensuring the normal operation of the time display and other functions, it can also achieve power isolation when the user adjusts the time, preventing interference with the main transmission system, and improving the reliability of the structure and the coordination of the functions of the entire watch.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The present invention forms a compact double-spring motive mechanism by axially connecting two mainsprings and two barrel shafts in series within a double-layer barrel, which not only greatly saves the planar and axial space of the watch movement, but also doubles the storage of the mainspring energy, effectively extending the battery life. In addition, the structure is symmetrical, the input and output ends are universal, the energy transmission is efficient, and combined with the friction transmission structure, it can ensure accurate time indication while supporting the stable operation of the multi-function display system, with better overall performance and stronger adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a partial top view of the present invention; Figure 3 This is a schematic diagram of the use of the motive mechanism of the present invention; Figure 4 It is a schematic diagram of a single spring driving mechanism in the prior art; Figure 5 It is a schematic diagram of a double-barrel axial series driving mechanism in the prior art.

[0023] Description of reference numerals: 1. Double barrel; 2. First barrel shaft; 3. Second barrel shaft; 4. Barrel cover; 5. First mainspring; 6. Second mainspring; 7. Barrel arbor jewel; 8. Barrel outer hook; 9. Mainspring outer hook; 10. Mainspring inner hook; 11. Barrel inner hook; 12. Winding wheel; 13. Output wheel; 14. Output overwheel; 15. Friction wheel; 16. Friction overwheel. DETAILED DESCRIPTION

[0024] The present application is further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, the embodiment of the present application discloses a watch-use single barrel dual mainspring internal axial series driving mechanism, comprising: The double-layered barrel 1 has a cavity for accommodating a mainspring. Specifically, the double-layered barrel 1 has two independent cavities arranged in a stacked manner along the axis of the double-layered barrel 1. The two mainsprings are respectively installed in the two cavities. The two cavities of the double-layered barrel 1 are respectively provided with a barrel cover 4 to limit the axial position of the two mainsprings and prevent them from escaping from the cavity. There are two mainsprings installed in the cavity of the double-layer barrel 1, and the outer ends of the two mainsprings are connected to the double-layer barrel 1. Specifically, the two mainsprings are wound in the same direction in the double-layer barrel 1 so that the torque directions of the two mainsprings when storing and releasing energy are consistent. In this example, the two mainsprings are a first mainspring 5 and a second mainspring 6; There are two barrel arbors, which are rotatably installed in the middle position of the double-layer barrel 1. The inner ends of the two springs are connected to the two barrel arbors respectively. Specifically, the two barrel arbors are the first barrel arbors 2 and the second barrel arbors 3. The first barrel arbors 2 are connected to the first spring 5, and the second barrel arbors 3 are connected to the second spring 6. More specifically, the circumferential direction of the barrel arbors is provided with a barrel arbors inner hook 11, and the inner end of the spring is provided with a spring inner hook 10, and the spring inner hook 10 is connected to the barrel arbors inner hook 11. In this example, the two barrel arbors are connected by a barrel arbors drill 7. Specifically, the barrel arbors drill 7 is a radial and axial composite sliding bearing, the purpose of which is to enable the two barrel arbors to rotate relative to each other while maintaining coaxiality.

[0026] A barrel outer hook 8 is provided on the inner wall of the double-layer barrel 1 , and a spring outer hook 9 is provided on the outer end of the mainspring, and the spring outer hook 9 is connected to the barrel outer hook 8 .

[0027] Specifically, the two bar shafts are coaxially and relatively rotatably installed in the middle of the double-layer barrel 1, so that in actual operation, one of the two bar shafts can be used as a power input end and the other as a power output end.

[0028] Specifically, the outer ends of the two barrel axles are both extended toward the outside of the double-layer barrel cassette 1 and can be used to connect the outer winding wheel 12 and the output wheel 13 .

[0029] The working principle of this driving mechanism is: when winding, the external force rotates the first shaft 2 clockwise, and the first spring 5 is wound up through the inner hook 11 of the shaft and the inner hook 10 of the spring; when the first spring 5 produces elastic deformation, it releases energy through the outer hook 9 of the spring and the outer hook 8 of the barrel, driving the double-layer barrel 1 to rotate clockwise; the double-layer barrel 1 rotates through the outer hook 8 of the barrel and the outer hook 9 of the spring to wind up the second spring 6; the external force of winding continues until both springs are fully wound, at which time the energy stored in the system is twice that of a single spring; the energy stored in the second spring 6 is output from the second shaft 3 through the inner hook 10 of the spring and the inner hook 11 of the shaft, providing power for the operation of the watch; the energy stored in the two springs is like two buckets of water connected at the bottom, if one end is released, the other end will be replenished in time until the energy stored at both ends is released.

[0030] Specifically, one of the bar shafts is connected to the winding wheel 12 in synchronous rotation, and the other bar shaft is connected to the output wheel 13 in synchronous rotation. The output wheel 13 is meshed with the output wheel 14. One path of the output wheel 14 transmits power to the escapement speed regulating mechanism through the transmission wheel system, and the other path of the output wheel 14 transmits power to the drum-type multi-function digital display mechanism through the friction wheel plate 15 and the friction wheel 16. More specifically, one end of this driving mechanism (first shaft 2) is connected to the winding mechanism via a winding wheel 12, utilizing external force to wind the mainsprings at both ends, storing energy. The other end (second shaft 3) is connected to an output pulley 14 via an output pulley 13, releasing energy. The output pulley 14 provides energy to the escapement and speed-regulating system through the transmission gear train. Controlled by the escapement's vibration frequency, the output pulley 14 then transmits its motion to the output pulley 14. The output pulley 14 then transmits the transmission gear train's motion to the drum-type multi-function digital display system via a friction wheel 15 and friction pulley 16, which indicates the time and other functions. A friction mechanism connects the output pulley 14 to the display system to ensure that adjusting the time and functions does not affect the normal operation of the transmission gear train. When energy is released at the output end and the mainspring unwinds, the winding spring immediately rebounds, driving the barrel to rotate and wind the output spring, maintaining energy balance between the two ends until the springs have fully rebounded.

[0031] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A watch-use single barrel dual mainspring internal axial series prime mover mechanism, characterized in that: include: A double-layer barrel (1) having a cavity for accommodating a mainspring; There are two mainsprings installed in the cavity of the double-layer barrel (1), and the outer ends of the two mainsprings are connected to the double-layer barrel (1); There are two bar shafts, which are rotatably mounted at the middle of the double-layer bar box (1). The inner ends of the two mainsprings are connected to the two bar shafts respectively.

2. A watch-use single barrel dual mainspring internal axial series prime mover mechanism according to claim 1, characterized in that: The double-layered barrel (1) has two independent cavities inside, and the two cavities are stacked along the axis of the double-layered barrel (1), and the two mainsprings are respectively installed in the two cavities.

3. A watch-use single barrel dual mainspring internal axial series prime mover mechanism according to claim 2, characterized in that: The two cavities of the double-layer box (1) are each provided with a box cover (4) outside.

4. A watch-use single barrel dual mainspring internal axial series prime mover mechanism according to claim 1, characterized in that: The two bar shafts are coaxially and relatively rotatably mounted in the middle of the double-layer bar box (1).

5. The watch-use single barrel dual mainspring internal axial series driving mechanism according to claim 1, characterized in that: The outer ends of the two bar shafts are both extended toward the outside of the double-layer bar box (1).

6. A watch-use single barrel dual mainspring internal axial series prime mover mechanism according to claim 5, characterized in that: A bar shaft inner hook (11) is provided in the circumferential direction of the bar shaft, a spring inner hook (10) is provided at the inner end of the spring, and the spring inner hook (10) and the bar shaft inner hook (11) are connected to each other; A box outer hook (8) is provided on the inner wall of the double-layer box (1), a spring outer hook (9) is provided on the outer end of the spring, and the spring outer hook (9) and the box outer hook (8) are connected to each other.

7. A watch-use single barrel dual mainspring internal axial series driving mechanism according to claim 1, characterized in that: The two mainsprings are wound in the same direction in the double-layer barrel (1) so that the torque directions of the two mainsprings are consistent when storing and releasing energy.

8. The watch-use single barrel dual mainspring internal axial series driving mechanism according to claim 1, characterized in that: One of the bar shafts is synchronously rotated and connected to the upper bar wheel (12), and the other bar shaft is synchronously rotated and connected to the output wheel (13), the output wheel (13) is meshed and connected with the output overwheel (14), one way of the output overwheel (14) transmits power to the escapement speed regulating mechanism through the transmission wheel system, and the other way of the output overwheel (14) transmits power to the drum-type multifunctional digital display mechanism through the friction wheel (15) and the friction overwheel (16).

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