Calendar dialing wheel structure and clock
By using an integrated injection molding process for the calendar wheel structure, the processing and assembly are simplified, solving the problem of cumulative errors caused by the large number of parts in existing technologies, and achieving precise control of the day of the week and calendar time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-13
AI Technical Summary
The calendar wheel structure of existing clocks is complex, with many parts and machining errors leading to cumulative errors that affect accuracy.
The components of the calendar wheel structure are integrally injection molded, including a circular toothed disc, a flexible arm, and calendar and day-of-the-week protrusions, simplifying processing and assembly.
This reduces the difficulty of processing and assembly, and precisely controls the time difference between the day of the week and the calendar within the set range, thus improving the accuracy of the watch.
Smart Images
Figure CN223993048U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a calendar wheel structure and a clock. Background Technology
[0002] Currently, the date change in watches is generally achieved by a gear transmission to the date wheel assembly, which then drives the calendar ring or day disc to rotate. The date wheel assembly contains multiple parts, typically consisting of gears, shafts, elastic plates, and a day-setting cam. This type of date wheel has a complex structure and many parts. Due to the processing errors of each product, a large cumulative error is caused after assembly, which affects the accuracy when used in a watch. Summary of the Invention
[0003] In view of this, the purpose of this utility model is to provide a calendar wheel structure and a clock, wherein all components of the calendar wheel structure are integrally injection molded, which facilitates production and manufacturing and reduces cumulative processing errors.
[0004] This utility model is implemented using the following scheme: a calendar wheel structure, characterized in that: it includes a circular toothed disc and a spring arm deformation clearance groove provided on the circular toothed disc, wherein the spring arm deformation clearance groove is provided with an elastic arm integrally injection molded with the circular toothed disc, the first end of the elastic arm is fixed to the body of the circular toothed disc, the second end of the elastic arm is suspended in the spring arm deformation clearance groove, a central shaft for rotational hinge is provided at the center of the surface of the circular toothed disc, a calendar ring protrusion for adjusting the calendar ring is provided in the radial direction from the middle of the elastic arm, and a week-shifting protrusion for adjusting the week-of-the-day disc is provided in the axial direction from the second end surface of the elastic arm, wherein the central shaft, the calendar ring protrusion, and the week-of-the-day protrusion are integrally injection molded with the circular toothed disc.
[0005] A clock using the above-mentioned calendar wheel structure is characterized in that it includes a main plate and a basic clock movement, an hour wheel, a calendar wheel, the calendar wheel, a calendar ring, a day-of-the-week wheel, and a day-of-the-week disc disposed on the main plate; the power of the basic clock movement is transmitted to the hour wheel, the hour wheel meshes with the large toothed plate of the calendar wheel, the small toothed plate of the calendar wheel meshes with the circular toothed disc of the calendar wheel, the calendar ring protrusion of the calendar wheel meshes with the calendar ring teeth of the calendar ring, the day-of-the-week protrusion meshes with the day-of-the-week wheel, and the day-of-the-week wheel meshes with the teeth of the day-of-the-week disc.
[0006] Preferably, the aforementioned week-turning protrusion has one or two protrusions.
[0007] Preferably, the large and small toothed plates of the aforementioned gear are integrally injection molded.
[0008] Preferably, the body of the aforementioned week disk and its teeth are integrally injection molded.
[0009] Preferably, the calendar ring protrusion and the day-of-the-week protrusion are positioned differently in the radial and axial directions. During the rotation of the calendar wheel, the day-of-the-week protrusion does not touch the teeth of the calendar ring, and the calendar ring protrusion passes under the day-of-the-week wheel without touching the teeth of the day-of-the-week wheel.
[0010] Preferably, the number of teeth on the aforementioned weekday disc is 14.
[0011] Preferably, the calendar ring has 31 teeth.
[0012] Preferably, the calendar ring protrusion and the weekday protrusion on the calendar wheel are offset by 70-100 degrees in their circumferential direction.
[0013] Preferably, the side of the calendar ring protrusion closest to the first end of the elastic arm is an inclined surface, and the side away from the first end of the elastic arm is a radial surface or an inclined surface with a small angle to the radial surface; the side of the week ring protrusion closest to the first end of the elastic arm is an inclined surface, and the side away from the first end of the elastic arm is a radial surface or an inclined surface with a small angle to the radial surface.
[0014] Preferably, the aforementioned week-turning protrusion has one or two protrusions.
[0015] Compared with the prior art, the present invention has the following advantages: by integrally injection molding the components of the calendar wheel, the processing and assembly difficulty of the calendar wheel is simplified, which is conducive to accurately controlling the time difference between the weekday and calendar jumps within the set range. Attached Figure Description
[0016] Figure 1 This is a top view schematic diagram of the clock of this utility model;
[0017] Figure 2 yes Figure 1 A sectional view with a turning point;
[0018] Figure 3 This is a perspective view of the structure involved in this utility model after removing parts such as the main clamping plate, the day disc, and the front pressure plate (which are components of the prior art) to facilitate viewing the transmission of parts;
[0019] Figure 4 This is the front view of the calendar wheel of this utility model;
[0020] Figure 5 yes Figure 4 A sectional view;
[0021] Figure 6 This is a perspective view of the calendar wheel of this utility model;
[0022] Figure 7 This is a perspective view of the calendar wheel according to another embodiment of the present invention;
[0023] In the diagram: 101-Main plate; 102-Hour wheel; 103-Calendar wheel; 104-Calendar dial; 105-Calendar ring; 106-Day wheel; 107-Day dial; Other mating parts are the same as in existing technology. Detailed Implementation
[0024] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] The calendar wheel structure of this utility model includes a circular toothed disk 104a and a spring arm deformation clearance groove 104f provided on the circular toothed disk 104a (e.g., Figure 6 As shown); the elastic arm 104c, integrally injection molded with the circular gear disk 104a, is provided in the elastic arm deformation clearance groove 104f. The outer wall of the elastic arm 104c can be equidistant from the inner wall of the elastic arm deformation clearance groove 104f. The first end of the elastic arm 104c is fixedly connected to the body of the circular gear disk 104a, and the second end of the elastic arm 104c is suspended in the elastic arm deformation clearance groove 104f. A central shaft 104b for rotational hinge is provided at the center of the surface of the circular gear disk 104a. The elastic arm 104c The center of 04c has a radially protruding calendar ring protrusion 104d for adjusting the calendar ring, and the second end surface of the elastic arm 104c has an axially protruding weekday protrusion 104e for adjusting the weekday (there are one or two weekday protrusions). The central shaft 104b, the calendar ring protrusion 104d, and the weekday protrusion 104e are integrally injection molded with the circular toothed disk 104a. By integrally injection molding the components of the calendar wheel, the processing difficulty, assembly difficulty, and assembly time of the calendar wheel are simplified.
[0027] This utility model's calendar dial can be used in single-calendar or double-calendar movements; when used in a single-calendar movement, the weekday section can be omitted.
[0028] The clock of this utility model uses the aforementioned calendar wheel structure. The clock includes a main plate 101 and a basic clock movement (a commercially available component, not described in detail here), an hour wheel 102, a calendar wheel 103, the calendar wheel 104, a calendar ring 105, a day-of-the-week wheel 106, and a day-of-the-week disc 107, all mounted on the main plate 101. The output end of the basic clock movement is connected to the hour wheel 102. The hour wheel 102 meshes with the large gear of the calendar wheel 103, and the small gear of the calendar wheel 103 meshes with the circular gear disc 104a of the calendar wheel 104. The calendar ring protrusion 104d of 104 engages with the calendar ring teeth of calendar ring 105, the day-of-the-week protrusion 104e engages with the day-of-the-week wheel 106, and the day-of-the-week wheel 106 engages with the teeth of the day-of-the-week disc 107. During operation, the output of the basic watch movement drives the hour wheel 102 to rotate, which in turn drives the calendar wheel 103 and the calendar wheel 104 to rotate in sequence. The rotation of the calendar wheel 104 drives the calendar ring 105 to move due to the calendar ring protrusion 104d on it, and drives the day-of-the-week protrusion 104e on it to rotate the day-of-the-week wheel 106 and the day-of-the-week disc 107.
[0029] For a rational design, the large and small toothed plates of the time wheel 103 are integrally injection molded; the body of the day disc 107 and its teeth are integrally injection molded. This design also facilitates the production and assembly of the clock.
[0030] For optimal design, the calendar ring protrusion 104d and the day-of-the-week protrusion 104e are positioned differently in the radial and axial directions. During the rotation of the calendar wheel 104, the day-of-the-week protrusion 104e cannot reach the teeth of the calendar ring 105, while the calendar ring protrusion 104d passes under the day-of-the-week wheel 106 and does not reach the teeth of the day-of-the-week wheel 106. That is, when the calendar wheel rotates, only the calendar ring protrusion 104d can engage with the calendar ring teeth. The day-of-the-week protrusion 104e is not long enough in the radial direction to engage with the calendar ring teeth. The day-of-the-week protrusion 104e can only engage with the day-of-the-week wheel teeth, while the calendar ring protrusion 104d cannot engage with the day-of-the-week wheel due to insufficient axial height and can only pass under the day-of-the-week wheel.
[0031] like Figure 7As shown, in the second embodiment, the calendar wheel has two weekday protrusions. Depending on the gear layout or the positioning of the weekday disc, when the angle between the weekday wheel and the calendar wheel changes, one weekday protrusion on the calendar wheel may not be able to continuously push the teeth of two weekday wheels. An additional weekday protrusion is needed to push the next tooth of the weekday wheel to complete the second jump of the weekday disc. Alternatively, if there is not enough space to place the weekday wheel, it may be necessary to eliminate the weekday wheel and directly push the weekday disc gears with the weekday protrusions on the calendar wheel. If the weekday disc needs to jump two teeth continuously within a day, the two weekday protrusions on the calendar wheel are used to push the two teeth on the weekday disc respectively. The shape and structure of the two weekday protrusions can be the same or similar (the shape of the protrusions can be adjusted according to the gears they mesh with).
[0032] For a reasonable design, the number of teeth on the weekday disc 107 is 14; the number of teeth on the calendar ring 105 is 31.
[0033] The gear transmission for hours, minutes, and seconds, not described in this invention, is existing technology and will not be elaborated upon. Regarding the calendar-jumping section of this invention: the hour wheel 102 drives the calendar wheel 103, and the small gear of the calendar wheel 103 drives the teeth of the calendar wheel 104. The calendar wheel 104 rotates once a day. When jumping the calendar, the calendar portion jumps first. The calendar ring protrusion 104d on the calendar wheel 104 moves the teeth of the calendar ring 105 during the jump, completing the calendar jump. Then, the day-of-the-week protrusion 104e on the calendar wheel 104 moves the teeth of the day-of-the-week wheel 106 during the day-of-the-week jump. The teeth of the day-of-the-week wheel 106 interact with the stars... The gears of the week wheel 107 engage, causing the week wheel to jump one position. The week wheel rotates 14 positions in one revolution (the specific installation structure of the week wheel is existing technology and will not be described in detail here). After the week wheel 107 completes one jump, the week protrusion 104e is still engaged with the teeth on the week wheel 106, continuing to drive the gears of the week wheel 107 to rotate. After the week wheel 107 completes the second jump, the week protrusion 104e disengages from the teeth of the week wheel. This completes two jumps of the week wheel in one day (this is also existing technology and will not be described in further detail here).
[0034] The date ring protrusion 104d and the day-of-the-week protrusion 104e on the date wheel 104 are offset by 70-100 degrees in their circumferential direction. The distance between the date ring protrusion 104d and the day-of-the-week protrusion 104e, or the angle with the center point, is fixed after being set according to different parameters such as the diameter of the watch. This makes it convenient to fix how long it takes for the day of the week to change after the date has changed. For example, if the requirement is that the two teeth on the day of the week must change within 3.5 hours after the date has changed, the distance between the two protrusions or the angle with the center point can be set by the rotation angle of the date wheel, thereby accurately controlling the time difference between the day of the week and the date. In current watches, because the date wheel assembly has many parts, each part has tolerances and requires multiple parts to cooperate in assembly, resulting in cumulative errors, the time difference of the date change is sometimes 3 hours, 3.2 hours, or 4 hours, etc., making it impossible to accurately control the time difference of the date change.
[0035] For a reasonable design, the side of the calendar ring protrusion 104d closest to the first end of the elastic arm 104c is an inclined surface, and the side away from the first end of the elastic arm 104c is a radial surface or an inclined surface with a small angle to the radial surface; the side of the day-of-the-week protrusion 104e closest to the first end of the elastic arm 104c is an inclined surface, and the side away from the first end of the elastic arm 104c is a radial surface or an inclined surface with a small angle to the radial surface. That is, when adjusting the time in reverse, when the calendar ring protrusion 104d contacts the calendar ring teeth in the opposite direction, the spring arm deforms radially inward, and the inclined surface of the protrusion can slide over the calendar ring teeth without causing the calendar to rotate; when the day-of-the-week protrusion 104e contacts the day-of-the-week gear teeth in the opposite direction, the spring arm deforms radially inward, and the inclined surface of the protrusion can slide over the day-of-the-week gear teeth without causing the day-of-the-week gear to rotate; at the same time, the inward deformation of the spring arm avoids damage to the two types of protrusions and gears.
[0036] In addition, the gear transmission between the mainspring barrel and the hour wheel in the watch is existing technology, and the winding system is also the same as existing technology, so it will not be described in detail here. The mounting and positioning structure of the hour wheel 102, calendar wheel 103, calendar ring 105, day wheel 106 and day disc 107 and the main plate 101 is existing technology, and will not be described in detail here.
[0037] This utility model has the following beneficial effects: the calendar wheel assembly is changed from multiple parts to one part, which simplifies the processing and assembly difficulty, and can accurately control the time difference between jumping the day of the week and the calendar within the set range; the calendar wheel is also injection molded as a whole, which also simplifies the assembly; the day of the week dial and the day of the week wheel are also injection molded as a whole, which not only simplifies the assembly, but also reduces many processes in the production of the day of the week dial, eliminating the need to spray paint and print on the metal day of the week dial, and printing directly on the plastic day of the week dial.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations.
Claims
1. A date wheel structure, characterized by: The calendar dial ring is provided with a circular tooth disc (104a) and an elastic arm deformation avoidance slot (104f) arranged on the circular tooth disc (104a), the elastic arm deformation avoidance slot (104f) is provided with an elastic arm (104c) integrally injection molded with the circular tooth disc (104a), the first end of the elastic arm (104c) is fixed on the body of the circular tooth disc (104a), the second end of the elastic arm (104c) is suspended in the elastic arm deformation avoidance slot (104f), the center shaft (104b) for rotary connection is arranged on the surface center of the circular tooth disc (104a), the middle part of the elastic arm (104c) is provided with a calendar dial ring protrusion (104d) for dialing the calendar dial ring in the radial direction, the second end surface of the elastic arm (104c) is provided with a week dialing protrusion (104e) for dialing the week dial in the axial direction, and the center shaft (104b), the calendar dial ring protrusion (104d) and the week dialing protrusion (104e) are integrally injection molded with the circular tooth disc (104a).
2. The date wheel structure according to claim 1, wherein: The week dialing protrusion (104e) has one or two.
3. A timepiece using the crown structure according to claim 1, characterized in that: The calendar dial ring is provided with a circular tooth disc (104a) and an elastic arm deformation avoidance slot (104f) arranged on the circular tooth disc (104a), the elastic arm deformation avoidance slot (104f) is provided with an elastic arm (104c) integrally injection molded with the circular tooth disc (104a), the first end of the elastic arm (104c) is fixed on the body of the circular tooth disc (104a), the second end of the elastic arm (104c) is suspended in the elastic arm deformation avoidance slot (104f), the center shaft (104b) for rotary connection is arranged on the surface center of the circular tooth disc (104a), the middle part of the elastic arm (104c) is provided with a calendar dial ring protrusion (104d) for dialing the calendar dial ring in the radial direction, the second end surface of the elastic arm (104c) is provided with a week dialing protrusion (104e) for dialing the week dial in the axial direction, and the center shaft (104b), the calendar dial ring protrusion (104d) and the week dialing protrusion (104e) are integrally injection molded with the circular tooth disc (104a).
4. A timepiece according to claim 3, characterised in that: The large tooth and the small tooth of the date wheel (103) are integrally injection molded.
5. A timepiece according to claim 3, characterised in that: The body of the week dial (107) and the tooth thereon are integrally injection molded.
6. A timepiece according to claim 3, 4 or 5, characterised in that: The calendar dial ring protrusion (104d) and the week dialing protrusion (104e) are different in position in the radial direction and the axial direction, in the rotation process of the date dial (104), the week dialing protrusion (104e) cannot touch the tooth of the calendar dial ring (105), and the calendar dial ring protrusion (104d) passes below the week wheel (106) and cannot touch the tooth of the week wheel (106).
7. A timepiece according to claim 3, characterised in that: The number of the tooth of the week dial (107) is 14.
8. A timepiece according to claim 3, characterised in that: The number of the tooth of the calendar dial ring (105) is 31.
9. A timepiece according to claim 3, characterised in that: The calendar dial ring protrusion (104d) and the week dialing protrusion (104e) on the date dial (104) are misaligned by 70-100 degrees in the circumferential direction.
10. A timepiece according to claim 3, characterised in that: The side close to the first end of the elastic arm (104c) of the calendar dial ring protrusion (104d) is a bevel, and the side away from the first end of the elastic arm (104c) is a radial surface or a bevel with a small angle to the radial surface; the side close to the first end of the elastic arm (104c) of the week dialing protrusion (104e) is a bevel, and the side away from the first end of the elastic arm (104c) is a radial surface or a bevel with a small angle to the radial surface.