Clock with date display

Abstract

The present invention relates to a watch 1, in particular a wristwatch, wherein the watch comprises a movement 100, a date display device 200, and an adjustment device 300. The movement 100 is surrounded by a movement holder ring 112, which axially and radially supports a date ring 202, the date ring 202 being arranged around the movement 100. The adjustment device 300 comprises a manually rotatable adjusting shaft 360, which is adjustable in an axial direction x between at least three positions, wherein the watch is in a time-display state in a basic position of the adjusting shaft, in a date-setting state in a first adjusting position of the adjusting shaft, and in a time-setting state in a second adjusting position of the adjusting shaft.

Description

Field of invention

[0001] The invention relates to a watch, in particular a wristwatch, with a quick-adjustable date display device. background

[0002] Many wristwatches today feature a date display with date numerals 1 to 31. These date numerals can be read, for example, through a window in the dial. They are typically located on a date ring, which is advanced by one position every 24 hours by a date mechanism linked to the watch movement.

[0003] In conventional wristwatches, the entire date display mechanism, including the date ring, is arranged radially above the actual movement within a movement holder. This stacked arrangement often significantly increases the watch's overall height. In familiar watches with a date display, the date can typically be adjusted via a crown.

[0004] For example, DE 10 2018 106 377 A1 discloses a watch with a date display which has a drive mechanism comprising a pawl which can be engaged and disengaged from a toothed ring of a rotatable date disc.

[0005] Furthermore, a clockwork with date display is known from DE 25 35 638 A1, in which the crown shaft can be moved into three different axial positions, assigned to the winding process, the date correction process and the hand setting process.

[0006] Finally, JP 2011 - 145 163 A reveals a calendar display device of a clock which allows the tens digit of a date and the units digit of a date to be positioned accurately.

[0007] Furthermore, watches are known, for example from DE 101 36 420 A1, in which a date ring is arranged essentially radially outside the movement, around it. These watches have a lower profile compared to watches with a stacked arrangement. However, setting the date on these low-profile watches is cumbersome, as the date can only be set indirectly, i.e., by rotating the hands. This means that to set the date, the time must be set to after midnight to effect a date change. To correct for another day, the time must be turned back (for example, to 8:00 PM) and then again to after midnight. This back-and-forth setting of the time must be repeated until the desired date is displayed. Setting the desired date is therefore very time-consuming.Furthermore, when setting the date, the originally set time is lost, so the time must be set again after the date is changed. Description of the invention

[0008] Against this background, the invention is based on the objective of providing a flat-design watch, in particular a wristwatch, which has a date display device that is quick and easy to set.

[0009] This problem is solved according to the invention by a watch, in particular a wristwatch, according to claim 1. Further aspects of the invention are described in the dependent claims and in the following description.

[0010] In particular, the task is solved by a clock comprising a clockwork mechanism, a date display, and an adjustment mechanism. The clockwork is surrounded by a movement holder. This can be made of multiple parts or as a single piece.

[0011] The date display device comprises a date ring, which is arranged essentially radially outside the movement around the movement. This date ring is axially and radially supported by the movement holder ring. The support can be direct, i.e., via a sliding bearing between the movement holder ring and the date ring, or indirect. In the case of indirect support, sliding bearing elements (in particular bearing jewels, bearing pins, and / or the like) and / or rolling bearing elements (in particular bearing rollers) can be used.

[0012] The date ring features an internal toothing system with numerous date ring teeth. For example, the internal toothing comprises 31 teeth, one for each day of the month.

[0013] The date ring can display date numerals (for example, the numbers 1 to 31). A window in the watch face may be provided through which a date numeral is visible. By rotating the date ring, the current date can be displayed. It is also possible for the date ring to have a marker that interacts with the watch face to indicate a date. For example, the watch face might have 31 windows, one for each day of the month. In this case, the date ring's marker can be visible through a window corresponding to the current date, thus displaying the date.

[0014] The date ring teeth are arranged in a first plane. This plane intersects the movement. Viewed axially, the date ring is therefore located within the movement. Consequently, a very slim watch can be produced, since the date ring surrounds the movement and is not positioned above or below it.

[0015] The adjustment mechanism includes a manually rotatable adjusting stem. The adjusting stem typically protrudes from the watch case and terminates in a crown. The crown may have knurling and is used to manually rotate the adjusting stem.

[0016] The adjusting stem is adjustable axially between at least three positions. For example, in a basic position, the adjusting stem can be fully inserted into the watch case and then pulled out into a first or second adjusting position. The first adjusting position can be located between the basic and second positions, or the second adjusting position can be located between the basic and first positions.

[0017] In the home position of the winding stem, the watch displays the time. This is the normal operating state of the watch, in which the set time or date is shown. In this state, it may also be possible to wind the watch. Winding can be done by turning the winding stem (manual winding) or automatically. With an automatic winding mechanism, the kinetic energy generated by the movement of the watch (e.g., on the wearer's wrist) is used to wind the watch. The watch can also be electrically powered, for example, by a battery.

[0018] In the first position of the setting shaft, the clock is in a date setting state, and in a second position of the setting shaft, it is in a time setting state.

[0019] In the first setting position, a date corrector wheel is coupled to the setting shaft such that a manual rotation of the setting shaft in a first direction forces a date corrector star, which is rotationally fixed to the date corrector wheel, into engagement with the internal teeth of the date ring. A further rotation of the setting shaft in the first direction then results in a rotation of the date ring. Therefore, when the setting shaft is in the first setting position, the desired date can be set quickly and easily by rotating the setting shaft in the first direction. According to the invention, the date can thus be set independently of the time or the position of the hands.

[0020] The date corrector star and the date corrector wheel can be formed as a single piece or be fixedly connected to each other. A rotation of the date corrector wheel therefore causes a rotation of the date corrector star.

[0021] In one aspect, the date corrector star has at least three teeth, or at least four teeth. The more teeth the date corrector star has, the faster the date can be adjusted, since with each rotation of the date corrector star, the date is advanced by the number of teeth of the date corrector star.

[0022] The coupling between the date corrector wheel and the setting shaft can be achieved via several gears. These gears can also be used to reduce or increase the rotational movement of the setting shaft.

[0023] If the adjusting shaft is in the first setting position and is rotated in the opposite direction, the engagement between the date corrector star and the internal gearing is disengaged. According to the invention, the date is adjusted in one direction. In the other, opposite direction, the date is not adjusted.

[0024] To engage the date corrector star with the internal teeth of the date ring, it is mounted on a translational bearing. For this purpose, a groove may be machined into a plate of the watch, guiding and limiting the translational movement of the date corrector star. For example, rotating the setting shaft in the first direction causes the date corrector star to be pushed radially outward, thus engaging with the internal teeth. Rotating it in the opposite direction retracts the date corrector star.

[0025] The date corrector star can be mounted in such a way that when the setting shaft is returned to its home position and the date corrector star is still engaged with the internal teeth of the date ring, a rotation of the date ring (due to normal operation of the watch) disengages the date corrector star. This ensures that the date corrector star does not block the date ring during normal operation of the watch.

[0026] The date ring can be axially supported by a multitude of jewels, particularly rubies. Other materials, such as corundum, can also be used instead of rubies. Specifically, the rubies can be arranged on a circumferential ring surface of the movement holder to axially support the date ring. In one aspect, the date ring is axially supported by at least 3, 4, 5, or 6 jewels. The jewels reduce friction, thereby reducing the forces required to rotate, and especially to adjust, the date ring.

[0027] To prevent the date ring from lifting off, a date ring cover may be provided. The date ring cover is positioned so that the date ring is located between the date ring cover and the movement holder ring.

[0028] Furthermore, the date ring is radially supported by a multitude of bearing pins or rollers. In one aspect, the date ring is supported by at least 3, or at least 4, or at least 5, or at least 6 bearing pins or rollers. Compared to a direct sliding bearing of the date ring in the movement holder ring, the bearing pins or rollers offer reduced friction. This reduced friction also lowers the forces required to rotate the date ring, especially to adjust it.

[0029] In particular, the use of bearing rollers significantly reduces friction, as this achieves a rolling bearing instead of a sliding bearing. For this purpose, the bearing rollers are rotatably mounted on the tool holder ring and support the date ring on its outer circumference.

[0030] In particular, the bearing rollers can be made of a material that further reduces friction. For example, the bearing rollers are made of corundum, ruby, brass, bronze, and / or similar materials.

[0031] In one aspect, the date display mechanism includes a date lever. The date lever is radially positioned within the date ring and is designed to engage with the internal teeth of the date ring, blocking its rotation until a predefined torque is exceeded. This allows for an abrupt increment of the date. For example, the displayed date changes abruptly at midnight, rather than gradually over a longer period. Therefore, the date is always easy and accurately readable.

[0032] If a date lever is provided, a bearing pin or roller that radially supports the date ring is preferably positioned opposite the date lever. This allows the radial forces acting on the date ring, originating from the date lever and / or any adjustment, to be efficiently transferred to the movement holder. This prevents unwanted displacement and / or jamming of the date ring.

[0033] In another aspect, the bearing pins or rollers are dimensioned and arranged so that they do not protrude axially beyond the edge of the tool holder ring. This allows for a low profile. In particular, the bearing pins or rollers can each be positioned in a recess of the tool holder ring's edge.

[0034] In another aspect, the adjustment mechanism includes a rocker arm. This rocker arm can be pivotally mounted on a pivot point. Furthermore, at least one intermediate adjustment wheel can be rotatably mounted on the rocker arm. When the rocker arm is pivoted, at least one intermediate adjustment wheel pivots with it.

[0035] Furthermore, the setting shaft can be coupled to the setting rocker in such a way that moving the setting shaft from the first setting position to the second setting position causes the setting rocker to pivot. This results in the intermediate setting wheel being forced into engagement with a change gear drive, which is coupled to an hour wheel of the clockwork.

[0036] In the first position, the intermediate setting wheel is also coupled to the setting shaft. The time can therefore be set by turning the setting shaft.

[0037] The pivoting of the setting lever (by moving the setting shaft from the first to the second position) also results in the date corrector wheel being disengaged from the setting shaft. In the first position, the setting shaft is coupled to an intermediate setting wheel via a clutch mechanism. This intermediate setting wheel meshes (possibly via further intermediate setting wheels) with a setting wheel, which in turn meshes with the date corrector wheel. Pivoting the setting lever, and the associated pivoting movement of the intermediate setting wheel, can cause the intermediate setting wheel and the setting wheel to no longer mesh, thus disengaging the date corrector wheel from the setting shaft.

[0038] In one aspect, the rocker arm and the adjusting shaft are coupled via a bell crank. The bell crank can be mounted at a pivot point and include a bell crank pin. This bell crank pin can be received in a rocker groove of the rocker arm. The rocker groove is shaped to guide the pivoting of the rocker arm. Moving the adjusting shaft from the first to the second position (or in the opposite direction) causes the bell crank to pivot. The pivoting of the rocker arm is then initiated via the bell crank pin.

[0039] As mentioned above, the adjusting device can include a clutch drive which is axially displaceable and rotationally fixed on the adjusting shaft. The clutch drive comprises a first toothed section and a second toothed section. The first and second toothed sections can be positioned opposite each other.

[0040] Moving the setting shaft from its home position to the first setting position and / or from its home position to the second setting position causes the first tooth of the clutch mechanism to engage with an intermediate setting wheel, and the second tooth of the clutch mechanism to disengage from a clutch wheel. In other words, moving the setting shaft from its home position releases the coupling with the clutch wheel. This results in the clock stopping (the date and time are therefore frozen) and / or the setting shaft being disengaged from a mainspring barrel. Depending on the position of the setting shaft, engaging the clutch mechanism with an intermediate setting wheel allows for adjustment of either the date or the time.

[0041] In one aspect, the teeth of the date ring interact with a date switching spring. The date switching spring, like the date lever and the date corrector star, is located in the first plane, thus ensuring a flat design. Preferably, the date switching wheel and the date corrector wheel are located below the first plane, i.e., between the main plate and the first plane. This results in a particularly flat design.

[0042] Furthermore, the date spring is rotationally fixed to a date wheel (either as a single piece or as a single unit). The date wheel is coupled to the hour wheel of the movement via at least one reduction gear. The reduction ratio can be chosen such that the date wheel completes one revolution in 24 hours and the date ring is incremented every 24 hours (at midnight).

[0043] The date-switching spring can comprise a spiral spring arm extending from a base to a free end, with a spring head located at the free end. The spring head has a drive surface designed to engage with a tooth of the date ring to increment the date ring when the date-switching spring is rotated in an incrementing direction.

[0044] Furthermore, the date switching spring can include an outer contour located adjacent to the drive surface. This outer contour is shaped (for example, arc-shaped) such that the spring head is forced radially inwards by a tooth of the date ring when the date ring is rotated using the date corrector star. This allows the date to be adjusted independently of the displayed time.

[0045] Furthermore, the outer contour can be shaped in such a way that when the date spring is turned backwards, there is no coupling between the date spring and the date ring that would cause the date ring to rotate. The date spring is turned backwards, for example, when the time is set back. The date spring does not block this reset of the clock and does not lead to an unwanted change in the date.

[0046] Furthermore, the date switching spring can have a radially inwardly projecting detent element (for example, in the form of a projection) at the spring head, which engages with a counter-detent element located at the base when the spring arm is sufficiently tensioned. This prevents the date from being changed as soon as the date switching spring or the drive surface engages with a tooth of the date ring. Instead, the date switching spring is tensioned first, and then the detent element engages with the counter-detent element. The detent element and the counter-detent element are dimensioned such that the date increments at midnight due to the rotation of the date switching spring. If a date lever is also provided, the incrementation occurs abruptly. Brief description of the characters

[0047] The invention is explained in more detail below with reference to the accompanying figures. Here, it shows Fig. 1. A schematic diagram of a clock; Fig. 2 a schematic detail view of a date wheel of the watch; Fig. 3 a schematic detail view of a clutch drive of the clock; Fig. 4 a schematic representation of the clock in a time display state; Fig. 5 a schematic representation of the clock when setting the date; Fig. 6 a schematic representation of the clock when setting the time, and Fig. 7 A schematic detail view of the storage of a date ring of the watch. Description of the characters

[0048] Fig. Figure 1 shows a schematic diagram of a clock. Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. Figure 7 shows further details of the clock. Clock 1, for example, can be a wristwatch. Clock 1 comprises a clockwork mechanism 100, a date display device 200, and an adjustment device 300.

[0049] The clockwork 100 serves, in a known manner, to drive an hour hand via an hour wheel 104. Minute and second hands (not shown) may also be provided. The clock 1 can be electrically powered or mechanical. In the example shown, the clock 1 includes a mainspring barrel 102. Therefore, the clock shown is a mechanical clock. A spring, which is arranged in the mainspring barrel 102, drives the clockwork 100. This spring can be wound by turning the crown 362 (see figure). Fig. 4-6) or an automatic winding mechanism.

[0050] The clock 1 comprises a base plate 110 on which further components of the clock, such as the hour wheel 104, are arranged and held. The base plate 110, and in particular the clockwork 100, is surrounded by a movement retainer ring 112. The time can be set via an intermediate gear pinion 130 and an intermediate wheel 132, as described in relation to Fig. As described in more detail in section 6, the settings will be adjusted.

[0051] The date display device 200 of the watch comprises a date ring 202, which is arranged essentially radially outside the movement 100 around the movement 100 and is axially and radially supported by means of the movement holder ring 112. An exemplary support arrangement is Fig. 7 shown in detail.

[0052] The date ring 202 has internal teeth with a plurality of date ring teeth 204. For example, 31 date ring teeth 204 are provided, whereby the number of date ring teeth 204 can correlate with the number of dates to be displayed. For example, if the date digits 1 to 31 of the Gregorian calendar are to be displayed using the date display device 200, 31 date ring teeth 204 can be provided. If the date is to be displayed in another calendar, for example the Islamic calendar, 30 date ring teeth are sufficient, since the Islamic calendar only has 30 date digits.

[0053] The date ring teeth 204 are arranged in a first plane which intersects the movement 100. Thus, viewed axially (here perpendicular to the image plane), the date ring 202 is not located above or below the movement, but around it.

[0054] The date ring 202 is also held in the axial direction by a date ring cover 205 or is arranged between the movement holder ring 112 and the date ring cover 205.

[0055] The date ring 202 is driven by a date switching spring 212 and a date switching wheel 210. This is explained in detail with reference to Fig. 2 explained. The date switching wheel 210 is coupled to the hour wheel 104 via a reduction wheel 206 in such a way that the date switching wheel 210 completes one revolution in 24 hours.

[0056] Furthermore, the date display device 200 includes a date lever 220. This is radially biased outwards by a U-shaped date lever spring 222 and is in engagement with the internal teeth of the date ring 202.

[0057] To set the date, a date corrector wheel 230 and a date corrector star 232 are provided. Their function is described with reference to Fig. 5 explained in more detail.

[0058] The adjusting device 300 comprises a manually rotatable adjusting shaft 360. The adjusting shaft 360 protrudes from a watch case (not shown) and terminates in a crown 362 (see figure). Fig. 4-6). The adjusting shaft is adjustable axially between three positions. The basic position is in Fig. 4, the first position is in Fig. 5 and the second position is in Fig. 6 shown.

[0059] In the illustrated embodiment, the adjusting device 300 comprises, in addition to the adjusting shaft 360 and the crown 362, a clutch drive 350, which is axially displaceable and rotationally fixed on the adjusting shaft 360. The clutch drive 350 is, with reference to Fig. 3 described in more detail.

[0060] When the adjusting shaft 360 is in the first or second adjusting position, the clutch drive meshes with a first intermediate adjusting wheel 322a. This is coupled to a third intermediate adjusting wheel 322c via a second intermediate adjusting wheel 322b. The intermediate adjusting wheels 322a-c are arranged on an adjusting rocker arm 320, which is pivotably mounted at a pivot point 321. When the adjusting rocker arm 320 is pivoted, the intermediate adjusting wheels 322a-c are pivoted accordingly. To enable the adjusting rocker arm 320 to pivot, it is coupled to the adjusting shaft 360 via an angle lever 340, so that an axial displacement of the adjusting shaft 360 from the first to the second adjusting position (or back) results in the adjusting rocker arm 320 pivoting.

[0061] Depending on the position of the rocker switch 320, the intermediate setting wheel 322c meshes with the change wheel 132 or a setting wheel 322a. Thus, either the time or the date can be set.

[0062] Fig. Figure 2 shows a schematic detail view of a date switching wheel 210 and a date switching spring 212 of the watch 1. The date switching spring 212 is connected to the date switching wheel 210 below it in a rotationally fixed manner.

[0063] The date switching wheel 210 is coupled to the hour wheel 104 via a reduction wheel 206 in such a way that the date switching wheel 210 and thus also the date switching spring 212 completes one revolution in 24 hours.

[0064] The date-switching spring 212 has a spiral spring arm 212f extending from a base 212b to a free end, at the free end of which a spring head 212k is arranged. The spring head includes a drive surface 212m which is configured to engage with a tooth 204 of the date ring 202 in order to increment the date ring 202 when the date-switching spring 212 is rotated in an incrementing direction d, here clockwise.

[0065] The spring head 212k also has a radially inwardly pointing detent element 212r which engages with a counter-detent element 212g, which is arranged at the base 212b, when the spring arm 212f is sufficiently tensioned.

[0066] When the date-switching spring 212 is rotated clockwise (by rotating the date-switching wheel 210), the drive surface 212m engages with the teeth 204 of the date ring 202, and the spring, in particular the spring arm 212f acting as a spiral spring, begins to tension. When the tension is sufficient, or the rotation has progressed far enough, the detent element 212r engages with the counter-detent element 212g. In this position, the spring arm 212f is tensioned, and the drive surface 212m rests against a tooth 204 of the date-switching wheel 210.

[0067] However, the further rotation of the date ring 202 is still blocked by the spring-loaded date lever 220. The date lever 220 engages, as in Fig. As shown in Figure 1, the date lever 220 engages with tooth 204 of the date ring 202, thus blocking the rotation of the date ring 202. Only when the date lever 212 has rotated sufficiently far, or is pre-tensioned to such an extent that the torque acting on the date ring 202 is large enough to raise the date lever 220 radially inwards, does the incrementing of the date ring begin. Once the date lever 220 is raised far enough to disengage from tooth 204 of the date ring 202, the date lever 212 can relax, thereby abruptly rotating the date ring to the next position. Upon reaching this position, the date lever 220 pivots back, again blocking the rotation of the date ring 202.

[0068] An outer contour 212a of the date switching spring 212, which is located adjacent to the drive surface 212m, is also shaped such that the spring head 212k is forced radially inwards by a tooth 204 of the date ring 202 when the date ring is rotated by means of the date corrector star 232. The date switching spring 212 therefore does not block the setting of the date.

[0069] Furthermore, the outer contour 212a is shaped in such a way that when the date switching spring 212 is turned backwards (i.e., against the incrementing direction), there is no coupling between the date switching spring 212 and the date ring 202 that would cause the date ring 202 to rotate. Therefore, resetting the time is also not blocked.

[0070] Fig. Figure 3 shows a schematic detail view of a clutch drive 350 of clock 1. The clutch drive 350 is axially displaceable and rotationally fixed on the adjusting shaft 360. Furthermore, the clutch drive 350 comprises a first toothed section 350a and a second toothed section 350b. The first toothed section 350a engages with an intermediate adjusting wheel 322a when the adjusting shaft 360 is in the first or second adjusting position, as shown. In both the first and second adjusting positions, a rotary movement of the adjusting shaft 360 can therefore be transmitted to the intermediate adjusting wheel 322a.

[0071] In the home position, the clutch pinion 350 and the intermediate setting wheel 322a do not mesh. Instead, the second toothed section 350b engages with the clutch wheel 352. This engagement allows the clock to run, meaning the clockwork and the date-setting ring are driven by the mainspring barrel 102. This engagement also enables the clock to be wound. Fig. Figure 4 shows clock 1 with the setting shaft 360 in its home position. As described, clock 1 runs in this position, i.e., it is in a time-display state.

[0072] Fig. Figure 5 shows clock 1, with the setting shaft 360 in the first setting position. The setting shaft is moved one position radially outwards, in the x-direction. In this state, the date can be set.

[0073] In the first position, the engagement between the clutch drive 350 and the clutch wheel 352 is disengaged. Instead, the clutch drive 350 is, as in Fig. Figure 3 shows the intermediate adjusting wheel 322a engaged. The intermediate adjusting wheel 322a meshes with the intermediate adjusting wheel 322b, and this with the intermediate adjusting wheel 322c. A rotary movement of the adjusting shaft 360 is thus transmitted up to the intermediate adjusting wheel 322c.

[0074] These intermediate adjusting wheels 322a-c are arranged on an adjusting rocker 320, which is pivotally mounted at a pivot point 321. The adjusting rocker 320 and the adjusting shaft 360 are coupled via a bell crank 340. The bell crank 340 includes a bell crank pin 342, which is received in a rocker groove 324 of the adjusting rocker 320. This rocker groove 324 guides the pivoting of the adjusting rocker 320. Moving the adjusting shaft 360 from the first to the second adjusting position (or in the opposite direction) causes the bell crank 340 to pivot. The bell crank pin 342 then initiates the pivoting of the adjusting rocker 320.

[0075] In the first position, the rocker arm 320 is oriented such that the intermediate setting wheel 322c meshes with the setting wheel 310a. The setting wheel 310a meshes with the setting wheel 310b, and this with the setting wheel 310c. The setting wheel 310c is in turn engaged with the date corrector wheel 230. The date corrector wheel 230 is mounted for translational movement and can be moved in or against the direction r. Furthermore, the date corrector wheel 230 is rotationally fixed to a date corrector star 232.

[0076] A manual rotation of the adjusting shaft 360 in a first direction is transmitted via the intermediate adjusting wheels 322a-c and the adjusting wheels 310a, 310b to the adjusting wheel 310c. The rotation of adjusting wheel 310c forces the date corrector star 232 radially outwards and into engagement with the internal teeth of the date ring 202. A further rotation of the adjusting shaft 360 in the first direction results in a rotation of the date ring 202. This allows the date to be quickly adjusted.

[0077] If the adjusting shaft 360 is rotated in the first adjusting position in the opposite direction, the engagement between the date corrector star 232 and the internal toothing is released again and the date corrector star 232 is pushed radially inwards.

[0078] Likewise, the date corrector star 232 is pushed radially inwards when the adjusting shaft is back in its home position and the date ring 202 is passed by the date corrector star 232 during normal operation.

[0079] Fig. Figure 6 shows clock 1 with the setting shaft 360 in the second setting position. The setting shaft is adjusted radially outwards by two positions. In this state, the time can be set. By adjusting the setting shaft 360 to the second position, the setting rocker 320 (by means of the angle lever 340) was engaged in the illustration of the Fig. 6 is moved to the left, so that the intermediate setting wheel 322c meshes with the change wheel 132. The coupling between intermediate setting wheel 322c and setting wheel 310a is released in this position.

[0080] The change gear 132 is non-rotatably connected to the change gear drive 130. The change gear drive meshes with the hour gear 104. Thus, the time can be set by rotating the setting shaft 360 degrees.

[0081] Fig. Figure 7 shows a schematic detail view of the bearing arrangement of a date ring 202 of the watch 1. The date setting ring 202 is axially supported on a multitude of jewels 124, such as rubies. These are arranged on an annular surface of the movement holder 112. The date ring can, for example, be supported on six jewels 124, which are evenly distributed around the circumference of the movement holder 112.

[0082] The radial support of the date-setting ring 202 is achieved here via bearing rollers 120. For example, 5 bearing rollers can be provided at different bearing positions L1, L2, L3, ... The bearing rollers 120 are rotatably mounted on the movement holder ring 112 and support the date ring 202 on an outer circumference. As shown here, the bearing rollers 120 can be rotatably mounted on a bearing roller axle 122.

[0083] To avoid increasing the overall height, the bearing rollers 120 are dimensioned and arranged so that they do not project axially beyond an edge 113 of the tool holder ring 112. Furthermore, the bearing rollers 120 are each arranged in a recess 114 of the edge 113 of the tool holder ring 112, as shown in the Fig. 4, Fig. 5 to Fig. 6 is shown.

[0084] It turns out that the information relating to Fig. The quick-adjustment mechanism of the date ring 202 and the date lever 220 described in section 5 exerts relatively large radial forces on the date ring. Therefore, at least one bearing roller 120 is preferably arranged opposite the date lever 220 in order to absorb these forces. Reference symbol list 1 a.m. 100 Clockwork 102 Spring barrel 104-hour wheel 110 worktop 112 Tool holder 113 Rand 114 Jump back 120 bearing roller 122 Bearing roller axle 124 bearing stone (e.g. ruby) 130 Change gear drive 132 Change wheel 200 Date display device 202 date ring 204 date ring tooth 205 Date ring cover 206 Reduction wheel 210 Date wheel 212 Date switching spring 212a Outer contour 212f spring arm 212g counter-locking element 212k spring head 212m² carrier area 212r Latching element 214 Date scarf duvet 220 date lever 222 date lever fields 230 Date corrector wheel 232 Date Corrector Star 300 Adjustment device 310a Adjusting wheel 310b Adjustment wheel 310c adjusting wheel 320 rocker switch 321 Pivot point rocker 322a Intermediate adjustment wheel 322b Intermediate dial 322c intermediate wheel 324 rocker groove 340 Angle lever 342 Angle lever pin 350 Clutch drive 350a first gearing 350b second gearing 352 Clutch wheel 360° adjusting shaft 362 crowns L1 storage site L2 storage facility L3 storage site d Direction of rotation date ring (increment direction) r Translational shift date corrector wheel x axial direction (axis direction of the adjusting shaft)

Claims

[1] watch (1), in particular wristwatch, wherein the clock (1) comprises a clockwork (100), a date display device (200) and an adjustment device (300), wherein the clockwork (100) is surrounded by a movement holder ring (112) and the date display device (200) comprises a date ring (202) which is arranged substantially radially outside the clockwork (100) around the clockwork and is axially and radially supported by means of the movement holder ring (112), wherein the date ring (202) is radially supported by a plurality of bearing pins or bearing rollers (120), wherein the bearing rollers (120) are rotatably arranged on the movement holder ring (112) and support the date ring (202) on an outer circumference, wherein the date ring (202) has an internal toothing with a plurality of date ring teeth (204), wherein the date ring teeth (204) are arranged in a first plane which intersects the clockwork (100), wherein the Adjustment device (300) comprises a manually rotatable adjusting shaft (360) which is adjustable in an axial direction (x) between at least three positions, wherein the clock (1) is in a basic position of the setting shaft (360) in a time display state, in a first setting position of the setting shaft (360) in a date setting state and in a second setting position of the setting shaft (360) in a time setting state, and wherein In the first setting position, a date corrector wheel (230) is coupled to the setting shaft (360) such that a manual rotation of the setting shaft (360) in a first direction forces a date corrector star (232), which is rotationally fixed to the date corrector wheel (230), into engagement with the internal teeth of the date ring (202), and a further rotation of the setting shaft (360) in the first direction leads to a rotation of the date ring (202), and wherein In the first setting position, the engagement between the date corrector star (232) and the internal gearing is released by a manual rotation of the setting shaft (360) in the opposite direction. [2] The watch (1) according to claim 1, wherein the date ring (202) is axially mounted on a plurality of bearing stones (124), in particular rubies. [3] The watch (1) according to claim 1 or 2, wherein the date display device (200) further comprises a date lever (220), and wherein the date lever (220) is arranged radially inside the date ring (202) and is configured to engage with the internal teeth of the date ring (202) to block a rotational movement of the date ring (202) until a predefined torque acting on the date ring (202) is exceeded. [4] The watch (1) according to claim 3, wherein a bearing pin or a bearing roller (120) is arranged opposite the date lever (220). [5] The watch (1) according to any one of claims 1 to 4, wherein the bearing pins or bearing rollers (120) do not project in the axial direction beyond an edge (113) of the movement holder ring (112) and are optionally arranged in a recess (114) of the edge (113). [6] The clock (1) according to one of claims 1 to 5, wherein the adjusting device (300) further comprises an adjusting rocker (320) on which at least one intermediate adjusting wheel (322a-c) is rotatably mounted, and wherein the adjusting shaft (360) is coupled to the adjusting rocker (320) in such a way that an adjustment of the adjusting shaft (360) from the first adjusting position to the second adjusting position causes the adjusting rocker (320) to pivot, so that the intermediate adjusting wheel (322c) is forced into engagement with a change gear drive (132) which is coupled to an hour wheel (104) of the clockwork (100). [7] The clock (1) according to claim 6, wherein the setting rocker (320) and the setting shaft (360) are coupled via an angle lever (340), wherein the angle lever (340) comprises an angle lever pin (342) which is received in a rocker groove (324) of the setting rocker (320), and wherein the rocker groove (324) guides the pivoting of the setting rocker (320). [8] The clock (1) according to any one of claims 1 to 7, wherein the adjusting device (300) further comprises a clutch drive (350) which is axially displaceable and rotationally fixed on the adjusting shaft (360) and comprises a first toothing (350a) and a second toothing (350b), wherein An adjustment of the adjusting shaft (360) from the basic position to the first adjusting position and / or an adjustment of the adjusting shaft (360) from the basic position to the second adjusting position causes the first toothing (350a) of the clutch drive (350) to be forced into engagement with an intermediate adjusting wheel (322a), and the engagement of the second toothing (350b) of the clutch drive (350) with a clutch wheel (352) is released. [9] The clock (1) according to any one of claims 1 to 8, wherein the date corrector star (232) has at least three teeth, or at least four teeth. [10] The watch (1) according to any one of claims 1 to 9, wherein the teeth (204) of the date ring (202) interact with a date switching spring (212), wherein the date switching spring (212) is arranged in the first plane and is coupled to a date switching wheel (210) in a rotationally fixed manner, wherein the date switching wheel (210) is coupled to the hour wheel (104) of the clockwork (100) via at least one reduction wheel (206). [11] The watch (1) according to claim 10, wherein the date switching spring (212) comprises a spiral spring arm (212f) extending from a base (212b) to a free end, wherein a spring head (212k) is arranged at the free end, which comprises a drive surface (212m) configured to engage with a tooth (204) of the date ring (202) in order to increment the date ring when the date switching spring (212) is rotated in an incrementing direction. [12] The watch (1) according to claim 11, wherein the date switching spring (212) comprises an outer contour (212a) which is arranged adjacent to the drive surface (212m), wherein the outer contour (212a) is shaped such that - the spring head (212k) is forced radially inwards by a tooth (204) of the date ring (202) when the date ring is rotated by means of the date corrector star (232) and / or - when the date switching spring (212) is turned backwards, there is no coupling between the date switching spring (212) and the date ring (202) that causes the date ring (202) to turn. [13] The watch (1) according to one of claims 10 to 12, wherein the date switching spring (212) has a radially inwardly pointing detent element (212r) on the spring head (212k) which engages with a counter-detent element (212g) which is arranged at the base (212b) when the spring arm (212f) is sufficiently tensioned. [14] The watch (1) according to any one of claims 1 to 13, wherein the date ring (202) bears date numerals or a marker which interacts with a dial of the watch (1) to indicate a date.

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