CN219552843U - Date display mechanism - Google Patents

Abstract

The utility model discloses a date display mechanism, which comprises a bottom plate for mounting a machine core, wherein a connecting unit, a driving unit and a roller are arranged on the bottom plate, and date information is arranged on the roller along the circumferential direction; the connecting unit is used for being connected with an output shaft of the movement, and the driving unit outputs power of the connecting unit to the roller so that the roller rotates to display date change. The date display mechanism is in a roller display mode, is large in display font, novel and interesting, is simple in structure, is easy to assemble and is convenient to adjust; and the design is ingenious, the manufacturability is good, the number of parts is small, and the assembly is simple and suitable for mass production. In addition, the date display mechanism can be used as an independent module mechanism and is arranged on the machine core of the watch, and the date display mechanism can be moved to various machine cores by changing the positions of the two spikes on the bottom plate, so that the adaptability is high.

Description

Date display mechanism

Technical Field

The utility model belongs to the field of watches, and particularly relates to a date display mechanism.

Background

The watch is a timing tool worn on the wrist. In order to facilitate the date viewing of the wearer, the watch is often provided with a calendar function, namely a double calendar function. Currently, a watch capable of displaying dates exists in China, and the display mode of the watch is a traditional pointer display mode or a window display mode.

The development of the watch nowadays tends to be more and more new and odd on the basis of knowing the time. The novel and interesting wristwatch is more attractive to consumers, especially young consumers. The creative products which are promoted by few brands are difficult to be watch products accepted by the public due to the complicated structure and high price. Therefore, the innovation of the watch date display structure is a valuable research direction on the premise of ensuring simple and reliable structure and not increasing too much cost.

For example, the existing date display mechanism adopts a roller display structure rotating by 360 degrees, so that the display mechanism has multiple functions of time display, calendar display, week calendar display and the like, and meanwhile, the whole appearance is more attractive, the modeling is more unique, and the interest of consumers can be attracted.

But the date display mechanism adopting the roller cannot be directly installed on the existing watch, the structure of the watch needs to be redesigned, the design difficulty of the watch is increased, and the popularization of the date display mechanism adopting the roller is inconvenient.

Disclosure of Invention

The utility model provides a date display mechanism, which aims to solve the technical problems of low universality and high design difficulty of a date display mechanism adopting a roller in the background technology.

In order to achieve the above object, the specific technical scheme of the date display mechanism of the present utility model is as follows:

the date display mechanism comprises a bottom plate for mounting a machine core, wherein a connecting unit, a driving unit and a roller are arranged on the bottom plate, and date information is arranged on the roller along the circumferential direction; the connecting unit is used for being connected with an output shaft of the movement, and the driving unit outputs power of the connecting unit to the roller so that the roller rotates to display date change.

Further, the connection unit comprises a double calendar wheel which is fixedly connected with the hour wheel of the movement coaxially, and the double calendar wheel is connected with the driving unit so as to transmit the movement of the watch movement to the driving unit.

Further, the driving unit comprises a day changing wheel, the day changing wheel is meshed with the connecting unit, and a shifting head is coaxially arranged on the day changing wheel; a medium wheel set is arranged between the poking head and the roller, and the poking head pokes a gear of the medium wheel set to transmit the power of the poking head to the roller.

Further, the rollers comprise a day unit roller, a day ten roller and a week roller; the daily unit roller is provided with unit numbers of dates along the circumferential direction, and the daily ten-bit roller is provided with ten-bit numbers of dates along the circumferential direction; the digits of the daily unit roller and the daily ten-digit roller are combined to be the date of the day; week numbers are arranged on the week calendar roller along the circumferential direction.

Further, the connecting unit comprises a day unit wheel fixedly connected to the day unit roller and a day changing wheel; 31 teeth are arranged on one wheel of the day changing, wherein 29 teeth are whole teeth, and 2 teeth are half teeth; the sun unit wheel is provided with 10 teeth, which respectively correspond to ten numbers of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 on the sun ten-position roller; 29 whole teeth of the sun-changing wheel are meshed with 10 teeth of the sun unit wheel, and 2 half teeth of the sun-changing wheel are separated from the sun unit wheel.

Further, the connecting unit comprises a day tens wheel fixedly connected to the day tens roller and a day changing wheel; 31 teeth are arranged on the day-changing two-wheel, wherein 5 teeth are whole teeth and 26 teeth are half teeth; the daily ten-position wheel is provided with 10 teeth, which respectively correspond to ten numbers of 0, 1, 2, 3, 0, 1, 2 and 3 on the daily ten-position roller; the 5 whole teeth of the day-changing two-wheel are meshed with the day-ten-position wheel, and the 26 half teeth of the day-changing two-wheel are separated from the day-ten-position wheel.

Further, marks for displaying the weeks are uniformly printed on the circumference of the week calendar roller; the calendar wheel is provided with 14 teeth which respectively correspond to the marks on the calendar roller.

Further, a through hole is formed in the bottom plate, and the roller is rotatably connected in the through hole.

Further, first cushion blocks are arranged on two sides of the first through hole in a relative mode, a calendar shaft is arranged between the two first cushion blocks, the day unit roller and the day ten-position roller are sleeved on the calendar shaft, and the day unit roller and the day ten-position roller are coaxially arranged and can rotate relatively.

Further, second cushion blocks are arranged at two sides of the second port in an opposite mode, zhou Lizhou is arranged between the two second cushion blocks, and the calendar roller is arranged on the calendar shaft.

The date display mechanism of the utility model has the following advantages:

1. the date display mechanism is in a roller display mode, is large in display font, novel and interesting, is simple in structure, is easy to assemble and is convenient to adjust; and the design is ingenious, the manufacturability is good, the number of parts is small, and the assembly is simple and suitable for mass production.

2. The date display mechanism can be used as an independent module mechanism and is installed on the watch core without changing the original core mechanism, and can be moved to various cores by changing the positions of two spikes on the bottom plate, so that the date display mechanism has high adaptability and is suitable for mass production.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

FIG. 1 is a schematic diagram of a connection structure of a movement and a date display mechanism of the present utility model;

FIG. 2 is a schematic view showing a back structure of the date display mechanism of the present utility model;

FIG. 3 is a schematic diagram showing a front structure of a date display mechanism according to the present utility model;

FIG. 4 is a schematic view of a calendar transmission chain structure according to the present utility model;

FIG. 5 is a schematic diagram of a calendar transmission chain according to the present utility model;

FIG. 6 is a schematic view of the installation of the positioning spring rod of the present utility model;

fig. 7 is a schematic view of the installation structure of the calendar drum and the month calendar drum of the present utility model.

The figure indicates:

1. a bottom plate; 11. a spike; 12. a first pad; 121. a calendar shaft; 13. a second cushion block; 131. zhou Lizhou; 14. a first positioning spring rod; 15. a second positioning spring rod; 16. a sun unit positioning spring rod; 17. a daily ten-position positioning spring rod; 18. a week calendar positioning spring rod; 19. a disk fixing claw; 2. a movement; 21. a hour wheel; 3. double calendar wheels; 4. a calendar transmission chain; 41. a first day changing wheel; 411. a first shifting head; 42. a first dual intermediate wheel; 43. a first sun-changing intermediate wheel; 44. changing a day by one round; 45. a second sun-changing intermediate wheel; 46. a daily unit wheel; 47. two rounds of day changing; 48. a third sun-changing intermediate wheel; 49. a daily ten-position wheel; 5. a calendar transmission chain; 51. a second day changing wheel; 511. the second shifting head; 52. a second double calendar intermediate wheel; 53. a first circumference changing intermediate wheel; 54. a second circumference changing intermediate wheel; 55. a day wheel; 6. a calendar transmission chain; 61. a calendar wheel; 7. a calendar transmission chain; 71. a calendar wheel; 8. a display unit; 81. a daily unit roller; 82. a daily ten-position roller; 83. a calendar drum; 84. a calendar roller; 85. a calendar roller; 9. a quick dialing unit; 91. a quick shift lever; 92. and a quick pulling rod spring.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other. In addition, "meshing" may be direct meshing in which two gears are directly connected, or indirect meshing in which other gears are provided between the two gears.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

As shown in fig. 1 and 2, the date display mechanism of the present utility model includes a base plate 1 on which a machine core 2 is mounted, a connection unit, a driving unit and a roller are provided on the base plate 1, and date information is provided on the roller along the circumferential direction, wherein the date information may be an calendar, a month calendar, a week calendar, a lunar calendar, etc. The connecting unit is used for being connected with the output shaft of the movement 2, and the driving unit outputs the power of the connecting unit to the roller so as to enable the roller to rotate, and therefore date change is displayed. The base plate 1 is also provided with a quick-dial unit 9 for pressing, and the quick-dial unit 9 is pressed to move so as to rotate the roller to adjust the current date display.

Thus, the date display mechanism is mounted on the base plate 1 so as to be provided as a separate module. According to the installed movement 2, the date display mechanism and the movement 2 can be matched only by machining and the like on the base plate 1 to be matched with the positioning mechanism, such as the spike 11 and the like. The roller is driven by a gear set formed by the connecting unit and the driving unit, and is driven to rotate by the power of the movement 2, so that other driving parts are not required, and the device is convenient and quick.

In particular, the connection unit includes a hour wheel 21, and the hour wheel 21 is generally disposed at the center of the base plate 1 so as to utilize the space on the base plate 1. The hour wheel 21 is mounted on the output shaft of the movement 2 so as to be connected with the movement 2, and the hour wheel 21 is connected to a pointer connected with a wristwatch through a transmission gear set to display time.

The hour wheel 21 is fixedly connected with a double calendar wheel 3 which is coaxially arranged, and the hour wheel 21 and the double calendar wheel 3 are combined into a whole in a pressing way, so that the hour wheel 21 and the double calendar wheel 3 synchronously rotate. The hour wheel 21 is provided with a shaft sleeve arranged along the axis, and the shaft sleeve is used for being inserted into the output shaft of the movement 2. And the double calendar wheel 3 is sleeved outside the shaft sleeve and fixed with the shaft sleeve. Thus, the double calendar wheel 3 and the hour wheel 21 are fixed to each other and rotated in synchronization.

Therefore, the power of the movement 2 is transmitted to different mechanisms through the connecting unit consisting of the hour wheel 21 and the double calendar wheel 3. According to the specific condition of the watch, different gears can be sleeved on the shaft sleeve to drive the corresponding mechanisms to work, such as day and night display, star image display and the like.

Structurally, the driving unit comprises a sun-changing wheel, and the double calendar wheel 3 of the connecting unit is meshed with the sun-changing wheel, so that the double calendar wheel 3 drives the sun-changing wheel to rotate. The sun-changing wheel is coaxially provided with a shifting head. Be provided with the intermediate wheel group between plectrum and the cylinder, the intermediate wheel group is through setting up a plurality of gears, and the plectrum dials the gear of intermediate wheel group, will dial the power transmission of head to the cylinder on and adjust the transmission ratio to guarantee the date display evidence on the cylinder.

The drums include a day unit drum 81, a day tens drum 82, and a day calendar drum 83. Wherein, the daily unit roller 81 is provided with unit numbers of dates along the circumferential direction, the daily ten-position roller 82 is provided with ten-position numbers of dates along the circumferential direction, and the week roller 83 is provided with week numbers along the circumferential direction.

For example, the daily unit roller 81 is uniformly provided with ten numbers of 0 to 9 of calendar units on the circumference, and the arrangement sequence is 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9; the daily unit roll 81 is incremented by one number each day with the daily unit wheel 46. The circumference of the daily ten-position roller 82 is uniformly printed with 0-3 ten digits of the daily ten-position, and the arrangement sequence is 0, 1, 2, 3, 0, 1, 2 and 3; the tens roller 82 passes one number per day along with the tens wheel 49, and the digits of the tens roller 82 and the tens roller 81 are combined together to be the date of the day; the circumference of the day roller 83 is uniformly printed with symbols for displaying the day, such as English abbreviations of seven weeks on Monday to Sunday, the arrangement sequence is MON, TUE, WED, THU, FRI, SAT, SUN, the day roller 83 passes one English every day along with the day wheel 55, and the English displayed by the day roller 83 is the day of the day.

In order to install the roller, a first through hole and a second through hole are formed in two sides of the bottom plate 1. The day unit cylinder 81 and the day tens cylinder 82 are coaxially disposed in the first port. The day drum 83 is disposed in the second port. Specifically, the first cushion blocks 12 are arranged on two sides of the first through hole, a calendar shaft 121 is arranged between the two first cushion blocks 12, and the daily unit roller 81 and the daily tens roller 82 are sleeved on the calendar shaft 121, so that the daily unit roller 81 and the daily tens roller 82 are coaxially arranged and can rotate relatively. And the two sides of the second port are provided with second cushion blocks 13 which are oppositely arranged, zhou Lizhou 131 is arranged between the two second cushion blocks 13, and the calendar roller 83 is arranged on Zhou Lizhou, so that the calendar roller 83 rotates in the second port.

As shown in fig. 3, in order to drive the above-mentioned rollers to rotate, the day wheel and intermediate wheel sets of the driving unit may be divided into a calendar unit driving chain driving the day unit roller 81 to roll, a calendar ten-position driving chain driving the day ten-position roller 82 to roll, and a day calendar driving chain 5 driving the day calendar roller 83 to roll. And because the day unit roller 81 and the day tens roller 82 are coaxially arranged at the same opening, the calendar unit transmission chain and the calendar tens transmission chain can share one day changing wheel, one shifting head and part of gears, and therefore the calendar unit transmission chain and the calendar tens transmission chain can form the calendar transmission chain 4.

Specifically, as shown in fig. 4, the calendar transmission chain 4 includes a first day changing wheel 41, the first day changing wheel 41 is engaged on the double calendar wheel 3 of the connection unit, and a first dial 411 on the first day changing wheel 41 dials the first wheel set, so that the first wheel set drives the day unit roller 81 and the day ten unit roller 82 to roll respectively.

The first intermediate wheel set includes a first dual-calendar intermediate wheel 42, and the first dual-calendar intermediate wheel 42 is used for being shifted by the first shifting head 411.

One side of the first double-calendar intermediate wheel 42 is meshed with a first sun-changing intermediate wheel 43, the first sun-changing intermediate wheel 43 is meshed with a first sun-changing intermediate wheel 44, the first sun-changing intermediate wheel 44 is meshed with a second sun-changing intermediate wheel 45, and the second sun-changing intermediate wheel 45 is meshed with a sun unit wheel 46 fixed on a sun unit roller 81, so that the sun unit roller 81 is driven to roll.

The other side of the first double intermediate wheel 42 is meshed with a second sun-changing wheel 47, the second sun-changing wheel 47 is meshed with a third sun-changing intermediate wheel 48, and the third sun-changing intermediate wheel 48 is meshed with a day tens wheel 49 fixed on a day tens roller 82, so that the roller of the day tens roller 82 is driven.

As shown in fig. 5, the day drive chain 5 includes a second day changing wheel 51, the second day changing wheel 51 is engaged with the dual calendar wheel 3 of the connection unit, and the second dial 511 on the second day changing wheel 51 dials the second wheel set to make the second wheel set drive the day roller 83 to roll.

The second intermediate wheel set comprises a second double calendar intermediate wheel 52, a first week exchanging intermediate wheel 53, a second week exchanging Zhou Jielun and a week wheel 55 which are sequentially meshed, and the week wheel 55 is fixedly pressed on the week drum 83. So that the second double calendar intermediate wheel 52 is shifted by the second shifting head 511 to drive the calendar roller 83 to roll.

For example, the dual calendar wheel 3 rotates 1 turn every 12 hours, and the corresponding sun wheel rotates one turn every 24 hours, and the dial rotates synchronously with the sun wheel, i.e. the dial dials 1 tooth per day for the first dual calendar intermediate wheel 42 and 2 teeth for the second dual calendar intermediate wheel 52.

Further, the first double intermediate wheel 42 is provided with 31 teeth. And the day one wheel 44 is also provided with 31 teeth, 29 of which are full teeth and 2 half teeth. The day unit wheel 46 is provided with 10 teeth corresponding to ten digits of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The day changing wheel 47 has 31 teeth, of which there are 5 whole teeth and 26 half teeth. The day tens wheel 49 is provided with 10 teeth corresponding to ten numbers of 0, 1, 2, 3, 0, 1, 2, 3.

31 teeth of the first double intermediate wheel 42 are meshed with 31 teeth of the first sun wheel 44 by the first sun wheel 43. 29 teeth of the sun gear 44 are engaged with 10 teeth of the sun unit wheel 46 by the second sun gear 45. The 2 half teeth of the day one wheel 44 do not engage with the day unit wheel 46, so that the day unit drum 81 at this time is kept stationary, for example, from 31 to 01 units.

31 teeth of the first double intermediate wheel 42 are meshed with 31 teeth of the second sun-changing wheel 47 through the third sun-changing wheel 48, 5 whole teeth of the second sun-changing wheel 47 are meshed with the tenth sun-changing wheel 49, and 26 half teeth of the second sun-changing wheel 47 do not participate in meshing with the tenth sun-changing wheel 49, so that the tenth sun-changing drum 82 at the moment is kept stationary, for example, from 07 to 08 ten positions are unchanged.

And the day wheel 55 is provided with 14 teeth corresponding to the marks representing monday to sunday seven weeks on the day drum.

By the above setting of the number of gear teeth, the display unit 8 is ensured to display the correct date every day.

Referring to fig. 6, the base plate 1 is further fixedly connected with a first positioning spring rod 14, a first chuck is formed at a free end of the first positioning spring rod 14, and the first chuck can be clamped with the first dual calendar intermediate wheel 42, so that the first dual calendar intermediate wheel 42 can only rotate one tooth when the first dial 411 dials the first dual calendar intermediate wheel 42 each time. The chuck of this embodiment is triangle-shaped, and between two adjacent teeth of triangle-shaped chuck joint, when first group head 411 stir first dual-calendar intermediate wheel 42 rotatory, after first dual-calendar intermediate wheel 42 rotatory a tooth, the chuck can the joint with first dual-calendar intermediate wheel 42 again immediately, prevents that first dual-calendar intermediate wheel 42 from rotating too much.

Correspondingly, a second positioning spring rod 15, a daily position positioning spring rod 16, a daily ten-position positioning spring rod 17 and a week positioning spring rod 18 are fixedly connected to the bottom plate 1. The free end of the second positioning spring rod 15 is provided with a second clamping head, and the second clamping head can be mutually clamped with the second double-calendar intermediate wheel 52, so that the second positioning spring rod 15 acts on the second double-calendar intermediate wheel 52, and the position of the second double-calendar intermediate wheel 52 after 1 tooth is rotated is ensured to be fixed. The free end of the sun unit positioning spring rod 16 is provided with a third clamping head which can be mutually clamped with the sun unit wheel 46, and the sun unit positioning spring rod 16 acts on the sun unit wheel 46 to ensure the position of the sun unit wheel 46 after 1 tooth is rotated. The free end of the day ten positioning spring rod 17 is provided with a fourth clamping head, the fourth clamping head can be mutually clamped with the day ten wheel 49, and the day ten positioning spring rod 17 acts on the day ten wheel 49 to ensure that the position of the day ten wheel 49 after rotating by 1 tooth is fixed. The free end of the calendar positioning spring rod 18 is provided with a fifth clamping head which can be mutually clamped with the calendar wheel 55, so that the calendar positioning spring rod 18 acts on the calendar wheel 55, and the position of the calendar wheel 55 after 1 tooth is rotated is ensured to be fixed.

The quick dial unit 9 is connected with the double-calendar intermediate wheel, and pressing the quick dial unit 9 can rotate the double-calendar intermediate wheel by one tooth so as to realize quick adjustment of date display. The quick-dial unit 9 comprises a quick-dial rod 91 and a quick-dial rod spring 92, the quick-dial rod 91 comprises a tip end, a tail end and a hinged end, the hinged end is hinged with a hinged column of the bottom plate 1, the tip end corresponds to teeth of the double-calendar intermediate wheel, the tail end is arranged at the edge position of the bottom plate 1, and the tip end can be driven to move by pressing a finger. The quick-dial lever spring 92 is in contact with the quick-dial lever 91, and the quick-dial lever spring 92 can reset the pressed quick-dial lever 91 so as to facilitate the next quick-dial operation, thereby realizing the quick adjustment of the day units roller 81, the day tens roller 82 and the day calendar roller 83 at a time.

The drums may include an almanac drum 84, a calendar drum 85, in addition to the day units drum 81, the day tens drum 82, and the calendar drum 83. Correspondingly, an calendar transmission chain 6 and a calendar transmission chain 7 are arranged on the base plate 1, namely corresponding sun wheel changing and intermediate wheel sets are replaced, so as to drive the calendar roller 84 and the calendar roller 85 to rotate. The calendar transmission chain 6 comprises a calendar wheel 61 arranged on a calendar roller 84, the calendar wheel 61 is provided with 10 teeth, 2022 to 2031 ten years are uniformly printed on the calendar roller 84 along the circumferential direction, and each time the calendar wheel 61 is shifted by 1 tooth, the year is replaced. The calendar transmission chain 7 includes a calendar wheel 71 mounted on the calendar drum 85, and the calendar wheel 71 is provided with 12 teeth. English abbreviations of twelve months JAN-DEC are uniformly printed on the calendar roller 85 along the circumferential direction, the arrangement sequence is JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OTC, NOV, DEC, and each time the calendar wheel 71 is shifted by 1 tooth, one month is replaced.

So that different rollers are provided on the base plate 1 as needed for the display of dates such as calendar, month calendar, week calendar, lunar calendar, etc. Besides different types, a plurality of rollers can be arranged to display one or more calendar methods such as calendar, month calendar, week calendar, lunar calendar and the like.

In order to prevent the force driven by the quick-dialing unit 9 from being transmitted to the movement 2, the dialing head is connected with the day-shifting wheel, the dialing head is provided with a limiting groove, and the day-shifting wheel is fixedly connected with a blocking nail positioned in the limiting groove. When the quick setting unit 9 is adjusted, the blocking nail moves along the limit groove to prevent power from being transmitted to the movement 2.

The base plate 1 is provided with a first groove which is used for accommodating the double calendar wheel 3; the bottom plate 1 is further provided with a second groove, the second groove is used for accommodating the driving unit, and the accommodating groove formed by the first groove and the second groove is used for accommodating the connecting unit and the driving unit, so that the bottom plate 1 is convenient to attach to the movement 2.

The connecting unit, the driving unit, the display unit 8 and the quick-dialing unit 9 form an independent integral module mechanism, the long nails 11 on the bottom plate 1 are assembled into the corresponding disc nail holes of the main machine core, the long nails are held by the disc fixing nails or dial screws of the original machine core and the disc fixing claws 19, so that the independent module mechanism and the main machine core are fixed, and the assembly on different machine cores can be realized by changing the positions of the long nails on the bottom plate 1 and changing the tooth numbers of the corresponding different machine cores and the corresponding different machine cores.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. The date display mechanism is characterized by comprising a bottom plate for mounting a machine core, wherein a connecting unit, a driving unit and a roller are arranged on the bottom plate, and date information is arranged on the roller along the circumferential direction; the connecting unit is used for being connected with an output shaft of the movement, and the driving unit outputs the power of the connecting unit to the roller so as to enable the roller to rotate, so that the date change is displayed;

the connecting unit comprises a double calendar wheel, the double calendar wheel is fixedly connected with the hour wheel of the movement coaxially, and the double calendar wheel is connected with the driving unit so as to transmit the movement of the watch movement to the driving unit;

the driving unit comprises a sun-changing wheel, the sun-changing wheel is meshed with the connecting unit, and a shifting head is coaxially arranged on the sun-changing wheel; a medium wheel set is arranged between the poking head and the roller, and the poking head pokes a gear of the medium wheel set to transmit the power of the poking head to the roller;

the roller comprises a day unit roller, a day ten roller and a week roller; the daily unit roller is provided with unit numbers of dates along the circumferential direction, the daily tens roller is provided with ten digits of the dates along the circumferential direction, and the digits of the daily unit roller and the daily tens roller are combined together to form the date of the day; week numbers are arranged on the week calendar roller along the circumferential direction.

2. The date display mechanism according to claim 1, wherein the connection unit includes a day unit wheel fixedly connected to the day unit drum, and a day changing wheel; 31 teeth are arranged on one wheel of the day changing, wherein 29 teeth are whole teeth, and 2 teeth are half teeth; the sun unit wheel is provided with 10 teeth, which respectively correspond to ten numbers of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 on the sun ten-position roller; 29 whole teeth of the sun-changing wheel are meshed with 10 teeth of the sun unit wheel, and 2 half teeth of the sun-changing wheel are separated from the sun unit wheel.

3. The date display mechanism according to claim 1, wherein the connection unit includes a day tens wheel fixedly connected to the day tens roller, and a day two wheel; 31 teeth are arranged on the day-changing two-wheel, wherein 5 teeth are whole teeth and 26 teeth are half teeth; the daily ten-position wheel is provided with 10 teeth, which respectively correspond to ten numbers of 0, 1, 2, 3, 0, 1, 2 and 3 on the daily ten-position roller; the 5 whole teeth of the day-changing two-wheel are meshed with the day-ten-position wheel, and the 26 half teeth of the day-changing two-wheel are separated from the day-ten-position wheel.

4. The date display mechanism according to claim 1, wherein the circumference of the day drum is uniformly printed with a mark for displaying the day; the calendar wheel is provided with 14 teeth which respectively correspond to the marks on the calendar roller.

5. The date display mechanism of claim 1, wherein the base plate is provided with a through opening, and the roller is rotatably connected to the through opening.

6. The date display mechanism according to claim 5, wherein first pads are provided on both sides of the first opening, a calendar shaft is provided between the first pads, and the day unit roller and the day tens roller are both sleeved on the calendar shaft, and are coaxially provided and rotatable relative to each other.

7. The date display mechanism according to claim 5, wherein second pads are provided on opposite sides of the second port, zhou Lizhou is provided between the second pads, and the day drum is provided on the day shaft.