Elastic shifting block and movement adopting shifting block

Abstract

The utility model relates to the field of mechanical watches, in particular to an elastic shifting block and a movement adopting the shifting block. The device comprises a fixing plate, a reed and a shifting tooth, one end of the reed is fixedly connected with the fixing plate, the other end of the reed is connected with the shifting tooth, the shifting tooth comprises a base plate and a tooth head, and the tooth head is provided with a shifting face and a guide face which are used for pushing the weekly calendar wheel to rotate and abutting against the weekly calendar wheel respectively so that the weekly calendar wheel can push the reed to swing when rotating. In addition, limiting teeth and a multi-layer reed structure are arranged, so that the stability and the reliability of the elastic shifting block are improved. The elastic shifting block can effectively improve the precision of a clock movement and prolong the service life of the clock movement, meanwhile, the assembly process is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of mechanical watches, and in particular to an elastic dial and a movement using the dial. Background Art

[0002] Mechanical watches, particularly those with day and week functions, have become a significant market segment. These watches not only display the time but also accurately display the current date and day of the week, significantly enhancing the user experience. However, achieving this functionality relies on a complex mechanical structure involving multiple components, including an hour wheel, a day-changing wheel, a rigid dial, and a day-of-the-week wheel. The precise coordination of these components ensures that the watch automatically updates the date and day of the week every 24 hours, achieving synchronized time and date display.

[0003] In addition, in order to achieve manual adjustment of the weekly calendar, a lever is also provided on the movement. The lever is used to turn the weekly calendar wheel to rotate separately, thereby achieving separate adjustment of the weekly calendar date.

[0004] However, in actual operation, it is found that when the calendar wheel rotates alone, it may interfere with the rigid dial head, causing the rigid dial head to hinder the independent rotation of the calendar wheel. At this time, if the calendar wheel is forcibly dialed, it will cause damage to the calendar wheel or the rigid dial head.

[0005] To improve this problem, lubricating oil is usually applied to the dial head to reduce the friction between the rigid dial head and the calendar wheel. However, this still cannot completely solve the interference problem between the rigid dial head and the calendar wheel. Utility Model Content

[0006] In order to reduce the interference between the dial head and the calendar wheel and ensure the smooth adjustment of the calendar wheel, the present application provides an elastic dial head and a movement using the dial head.

[0007] On the one hand, the present application provides an elastic dial head, which adopts the following technical solution:

[0008] An elastic shift head comprises a fixing plate, a spring and shift teeth;

[0009] One end of the spring is fixedly connected to the fixing plate, and the other end is connected to the shifting tooth;

[0010] The shifting tooth comprises a base plate and a tooth head, wherein the base plate is fixedly connected to the spring, and the tooth head is arranged on the base plate;

[0011] The tooth head has a dial surface and a guide surface. The dial surface is used to push the weekly wheel to rotate; the guide surface is used to abut against the weekly wheel so that the reed is pushed to swing when the weekly wheel rotates.

[0012] By employing this technical solution, the elastic dial effectively reduces interference with the day wheel, ensuring smooth manual adjustment of the day wheel. Specifically, when the day wheel needs to be rotated independently, the guide surface contacts the day wheel and pushes the spring to swing, thus avoiding hard collision between the rigid dial and the day wheel and reducing the risk of component damage. Furthermore, the dial surface effectively drives the day wheel during normal operation, ensuring the movement's time and date synchronization.

[0013] Preferably, the guide surface is configured as an arc-shaped surface.

[0014] By adopting the above technical solution, setting the guide surface as an arc-shaped surface can effectively reduce the friction generated by the contact between the weekly wheel and the guide surface when it rotates, thereby reducing the interference between the weekly wheel and the dial head, ensuring that the weekly wheel can be manually adjusted more smoothly, and improving the reliability of operation and service life.

[0015] Preferably, the shifting teeth further include a limiting tooth provided on the base plate, wherein the limiting tooth is located on a side of the base plate facing the fixed plate and is used for abutting against the fixed plate.

[0016] By adopting the above technical solution, the limiting tooth can effectively prevent the shifting tooth from swinging excessively, ensuring the stability and reliability of the shifting tooth when pushing the calendar wheel to rotate, and avoiding structural damage or functional failure caused by excessive swinging.

[0017] Preferably, the spring is arranged in a C shape and surrounds the circumference of the fixing plate, and a gap is provided between the spring and the fixing plate.

[0018] By adopting the above technical solution, the reed is arranged in a C shape and surrounds the circumference of the fixed plate, which further enhances the elastic characteristics of the reed, allowing it to swing more flexibly when the weekly wheel rotates, avoiding the interference problem between the rigid dial head and the weekly wheel, and ensuring smooth adjustment of the weekly wheel.

[0019] Preferably, the reed includes a first reed and a second reed, wherein the first reed is arranged on one side of the fixed plate, and the second reed is arranged on a side of the first reed facing away from the fixed plate;

[0020] There is a gap between the first reed and the fixed plate, one end of the first reed is fixedly connected to the fixed plate, and the other end is suspended; there is a gap between the second reed and the first reed, and one end of the second reed is connected to the suspended end of the first reed, and the other end of the second reed is connected to the shifting tooth.

[0021] This technical solution improves the spring's elasticity and stability, effectively reducing interference between the shift teeth and the calendar wheel, ensuring smooth rotation during manual adjustment and preventing damage caused by a rigid shift head. Furthermore, the multi-layer spring design enhances the reliability and durability of the entire flexible shift head.

[0022] Preferably, the first reed and the second reed are both arranged in a C shape, the first reed surrounds the peripheral side of the fixing plate, and the second reed surrounds the peripheral side of the first reed.

[0023] By adopting this technical solution, the force generated by the rotation of the calendar wheel is more evenly distributed on the spring, thereby improving the overall stability and reliability of the elastic dial. Furthermore, the C-shaped spring structure can better absorb and release energy, reduce rigid impact, further reduce interference between the dial and the calendar wheel, and ensure smoother manual adjustment of the calendar wheel.

[0024] On the other hand, the present application provides a movement, which adopts the following technical solution:

[0025] A movement comprises the elastic dial head described above, and also comprises an hour wheel, a circumference changing wheel and a calendar wheel; the elastic dial head is arranged on the circumference changing wheel, and the fixed plate is rotatably connected to the circumference changing wheel; a limiting block is provided on the circumference changing wheel, and a limiting groove is provided on the fixed plate for engaging with the limiting block.

[0026] By adopting this technical solution, the spring design of the elastic shifter allows the shift teeth to elastically deform when subjected to the reaction force of the calendar wheel, avoiding hard collisions between the rigid shifter and the calendar wheel, thereby reducing the risk of damage. Furthermore, the rotational connection between the fixed plate and the calendar wheel, as well as the coordination between the stop block and the stop slot, further enhance the stability and reliability of the elastic shifter, ensuring the proper operation of the movement.

[0027] Preferably, the circumferential side of the weekly wheel has a plurality of teeth, and the number of teeth is N times seven; the shifting teeth are provided with N pieces, and the N shifting teeth correspond one to one with the adjacent N teeth.

[0028] By adopting the above technical solution, when a plurality of teeth are provided on the circumference of the day-of-the-week wheel, and the number of teeth is N times seven, it is possible to ensure that the angle of each rotation of the day-of-the-week wheel precisely corresponds to each day of the week, thereby achieving accurate display of the calendar. Furthermore, by providing N shift teeth, each of which corresponds one-to-one with the N adjacent teeth, the force points during the day-of-the-week wheel rotation are dispersed, reducing wear on individual shift teeth and improving the reliability and service life of the entire system.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The spring design of the elastic dial head enables the dial teeth to produce a certain degree of elastic deformation when subjected to the reaction force of the calendar wheel, thereby effectively avoiding the interference problem between the rigid dial head and the calendar wheel, ensuring smooth adjustment of the calendar wheel;

[0031] 2. The guide surface of the shifting tooth is designed as a curved surface, which further reduces the friction resistance when in contact with the calendar wheel, and improves the stability and reliability of manual adjustment of the calendar wheel;

[0032] 3. The rotating connection design between the fixed plate and the rotation wheel, combined with the snap-fit ​​cooperation between the limit block and the limit slot, ensures the positioning accuracy of the elastic dial head during operation and avoids failures caused by position offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the structure of the movement using a rigid dial in the embodiment of the present application;

[0034] Figure 2 Used to demonstrate a situation where the rigid dial head presses against the perimeter-changing wheel, thereby preventing the perimeter-changing wheel from rotating;

[0035] Figure 3 It is used to show another situation where the rigid dial head presses against the perimeter-changing wheel, thereby preventing the perimeter-changing wheel from rotating;

[0036] Figure 4 This is a schematic structural diagram of the elastic dial head in an embodiment of the present application;

[0037] Figure 5 It is a schematic diagram of the structure of the elastic plectrum after further improvement of the reed;

[0038] Figure 6 It is a structural schematic diagram of a movement using an elastic dial in an embodiment of the present application.

[0039] Markings in the accompanying drawings: 1. Fixed plate; 11. Limiting groove; 2. Reed; 21. First reed; 22. Second reed; 3. Shifting tooth; 31. Base plate; 32. Tooth head; 321. Shifting surface; 322. Guide surface; 33. Limiting tooth; 4. Hour wheel; 5. Weekly change wheel; 51. Limiting block; 6. Weekly wheel; 7. Quick shift lever; 8. Shifting claw; 9. Positioning lever; 10. Positioning spring; 110. Rigid shifting head. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] Reference Figure 1 The structure of a mechanical watch movement includes an hour wheel 4, a change wheel 5, a rigid shifting head 110, and a day and night wheel 6. Furthermore, a quick shift lever 7, a shifting finger 8, a positioning lever 9, and a positioning spring 10 are provided. The quick shift lever 7 drives the day and night wheel 6 via the shifting finger 8, while the positioning lever 9, under the elastic force of the positioning spring 10, engages with the tooth groove between two adjacent teeth on the day and night wheel 6, thereby keeping the day and night wheel 6 in place.

[0042] During normal movement, the hour wheel 4 rotates, driving the calendar wheel 5 to rotate. The calendar wheel 5 is provided with a pin, and the rigid dial head 110 is rotatably provided on the calendar wheel 5. The pin drives the rigid dial head 110 to rotate, and the rigid dial head 110 then drives the calendar wheel 6 to rotate.

[0043] When manually adjusting the week wheel 6 by the quick lever 7, the quick lever 7 is pressed to make the rigid finger 8 push the week wheel 6 to rotate. When the week wheel 6 rotates and hits the rigid finger 8, the rigid finger 8 will rotate. When the rigid finger 8 rotates to a certain angle, such as Figure 2 and Figure 3 As shown, the rigid finger 8 will press against the day wheel 6, blocking the normal rotation of the day wheel 6. At this time, the day wheel 6 cannot be adjusted.

[0044] In order to solve the above problems, the present application provides an elastic dial head and a movement using the elastic dial head.

[0045] First, for the elastic dial, refer to Figure 4 The shifting tooth 3 comprises a fixed plate 1, a spring 2, and a shifting tooth 3. One end of the spring 2 is fixedly connected to the fixed plate 1, and the other end is connected to the shifting tooth 3. The shifting tooth 3 comprises a base plate 31 and a tooth head 32. The base plate 31 is fixedly connected to the spring 2. The tooth head 32 is arranged on the base plate 31 and is located on the side of the base plate 31 facing away from the fixed plate 1. The tooth head 32 has a shifting surface 321 and a guide surface 322. The shifting surface 321 is used to drive the calendar wheel 6 to rotate; the guide surface 322 is used to abut against the calendar wheel 6, so that the rotation of the calendar wheel 6 drives the spring 2 to swing.

[0046] The guide surface 322 is set to an arc surface, which can guide the rotation of the calendar wheel 6 and reduce the resistance of the calendar wheel 6. The guide surface 322 can be designed as an arc surface, or as an involute surface with a gradually increasing curvature radius.

[0047] The shifting teeth 3 also include a limiting tooth 33 disposed on the base plate 31. This limiting tooth 33 is located on the side of the base plate 31 facing the fixed plate 1 and is configured to abut against the fixed plate 1. The limiting tooth 33 can be designed in a variety of shapes, such as a triangle, trapezoid, or rectangle, to provide a stable limiting effect in different situations. For example, when the calendar wheel 6 is subjected to a large external force, the limiting tooth 33 can prevent the shifting teeth 3 from swinging excessively, thereby preventing damage to the calendar wheel 6 or other components.

[0048] The spring 2 is C-shaped and surrounds the fixed plate 1. One end of the spring 2 is connected to the fixed plate 1, while the other end is suspended and connected to the base plate 31. A gap is provided between the spring 2 and the fixed plate 1. This design allows the spring 2 to swing freely when subjected to force. The thickness of the spring 2 can also be adjusted as needed to ensure its elasticity and durability.

[0049] Reference Figure 5As a further improvement to the reed 2, the reed 2 includes a first reed 21 and a second reed 22. The first reed 21 is arranged on one side of the fixed plate 1, and the second reed 22 is arranged on the side of the first reed 21 facing away from the fixed plate 1. A gap is provided between the first reed 21 and the fixed plate 1, one end of the first reed 21 is fixedly connected to the fixed plate 1, and the other end is suspended. A gap is provided between the second reed 22 and the first reed 21, and one end of the second reed 22 is connected to the suspended end of the first reed 21, and the other end of the second reed 22 is connected to the shifting tooth 3. The first reed 21 and the second reed 22 are both arranged in a C shape, with the first reed 21 surrounding the fixed plate 1 and the second reed 22 surrounding the first reed 21.

[0050] The first and second springs 21, 22 are both C-shaped, effectively increasing the elastic deformation range of the spring 2, thereby better absorbing the relative motion between the day wheel 6 and the shifting tooth 3. For example, when the day wheel 6 is subjected to a large external force, the first and second springs 21, 22 can work together to absorb more energy, thereby preventing impact on the day wheel 6 and ensuring the normal operation of the shifting tooth 3.

[0051] Secondly, refer to Figure 6 The movement includes the aforementioned elastic shifting head, as well as an hour wheel 4, a perimeter change wheel 5, and a calendar wheel 6. The elastic shifting head is mounted on the perimeter change wheel 5, and the fixed plate 1 is rotatably connected to the perimeter change wheel 5. A limit block 51 is provided on the perimeter change wheel 5, and a limit groove 11 is provided on the fixed plate 1 to engage with the limit block 51. The limit block 51 can be a pin. The pin is inserted into the perimeter change wheel 5 so that the pin head protrudes from the surface of the perimeter change wheel 5, thereby forming the limit block 51. The limit block 51 cooperates with the limit groove 11 to secure the elastic shifting head, thereby facilitating synchronous rotation of the shifting tooth 3 and the perimeter change wheel 5.

[0052] The circumference of the day wheel 6 is provided with several teeth, with the number of teeth being N times seven. There are N shifting teeth 3, each corresponding one-to-one with each of the N adjacent teeth. For example, if the day wheel 6 has seven teeth, one shifting tooth 3 can be provided; if the day wheel 6 has 14 teeth, two shifting teeth 3 can be provided. This design ensures that the day wheel 6 is accurately shifted each time it rotates, thereby achieving accurate display of the day.

[0053] 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. An elastic dial head, characterized by: It comprises a fixing plate (1), a reed (2) and a shifting tooth (3); One end of the reed (2) is fixedly connected to the fixed plate (1), and the other end is connected to the shifting tooth (3); The shifting tooth (3) comprises a base plate (31) and a tooth head (32), wherein the base plate (31) is fixedly connected to the spring (2), and the tooth head (32) is arranged on the base plate (31); The tooth head (32) has a toggle surface (321) and a guide surface (322), wherein the toggle surface (321) is used to push the calendar wheel (6) to rotate; and the guide surface (322) is used to abut against the calendar wheel (6) so that the calendar wheel (6) pushes the reed (2) to swing when the calendar wheel (6) rotates.

2. The elastic dial according to claim 1, characterized in that: The guide surface (322) is configured as an arc-shaped surface.

3. The elastic dial according to claim 1, characterized in that: The shifting teeth (3) further include a limiting tooth (33) provided on the base plate (31); the limiting tooth (33) is located on a side of the base plate (31) facing the fixed plate (1) and is used for abutting against the fixed plate (1).

4. The elastic dial according to claim 1, characterized in that: The leaf spring (2) is arranged in a C-shape and surrounds the circumference of the fixed plate (1), and a gap is provided between the leaf spring (2) and the fixed plate (1).

5. The elastic dial according to claim 1, characterized in that: The reed (2) comprises a first reed (21) and a second reed (22), wherein the first reed (21) is arranged on one side of the fixed plate (1), and the second reed (22) is arranged on a side of the first reed (21) facing away from the fixed plate (1); A gap is provided between the first reed (21) and the fixed plate (1), one end of the first reed is fixedly connected to the fixed plate (1), and the other end is suspended; a gap is provided between the second reed (22) and the first reed (21), one end of the second reed (22) is connected to the suspended end of the first reed (21), and the other end of the second reed (22) is connected to the shifting tooth (3).

6. The elastic dial according to claim 5, characterized in that: The first reed (21) and the second reed (22) are both arranged in a C-shape, the first reed (21) surrounds the peripheral side of the fixed plate (1), and the second reed (22) surrounds the peripheral side of the first reed (21).

7. A movement, characterized in that: The invention comprises the elastic dial head as claimed in any one of claims 1 to 6, and further comprises an hour wheel (4), a circumference changing wheel (5) and a calendar wheel (6); the elastic dial head is arranged on the circumference changing wheel (5), and the fixing plate (1) is rotatably connected to the circumference changing wheel (5); a limiting block (51) is provided on the circumference changing wheel (5), and a limiting groove (11) is provided on the fixing plate (1) for engaging with the limiting block (51).

8. The movement according to claim 7, characterized in that: The circumferential side of the calendar wheel (6) has a plurality of teeth, and the number of the teeth is N times seven; the shifting teeth (3) are provided with N pieces, and the N shifting teeth (3) correspond one-to-one to the adjacent N pieces of teeth.

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