A locking mechanism for locking a movable weight of a timing device, and timing device

Abstract

A locking mechanism for locking a movable weight (250) of a charging mechanism of a timing device. The charging mechanism is configured to charge an energy storage of the timing device by the movement of the movable weight. The locking mechanism comprises a movable locking member (167) configured to be moved between a disengaged state to an engaged state. The locking mechanism comprises an actuator (160) configured to be operated by a user of the timing device for controllably moving the locking member between the disengaged state and the 0 engaged state. The locking mechanism further comprises display means configured to indicate information on the disengaged state and the engaged state of the locking member in dependency of the movement of the locking member.

Description

[0001] TITLE: A locking mechanism for locking a movable weight of a timing device, and timing device

[0002] Field of the invention

[0003] The present invention relates to a locking mechanism for locking a movable weight of a charging mechanism of a timing device. The charging mechanism is configured to charge an energy storage of the timing device by the movement of the movable weight, such as rotatable weight. The movable weight is configured to be set in motion by the movements of a user.

[0004] The locking mechanism comprises a movable locking member configured to be moved between a disengaged state to an engaged state. In the disengaged state, the locking member is free from contact with the movable weight, thereby allowing the movable weight to move such that the energy storage of the timing device is charged. In the engaged state, the locking member is in engagement with the movable weight such that movements of the movable weight are prevented.

[0005] The locking mechanism further comprises display means to indicating the state as disengaged or engaged to the user of the timing device. The locking mechanisms allows for simultaneous user control and display of engagement state.

[0006] The present invention also relates to a timing device comprising the locking mechanism.

[0007] Background of the invention

[0008] Timing devices, in particular mechanical timing devices, such as watches, clocks etcetera, are often provided with a charging mechanism configured to charge an energy storage of the timing device. The charging mechanism comprises a movable weight, such as an oscillating weight, that is set in motion by the movements of a user. The energy generated from the movement of the weight is harvested and stored in the energy storage of the timing device.

[0009] A problem with such charging mechanism is that mechanism is relatively sensitive and if the timing devices are subjected to a substantial shock, the charging mechanism may be damaged. Thereby potentially compromising the overall functionality of the device. For instance, a shock from an activity of the user, such as a sport activity, may produce a shock strong enough to damage the charging mechanism. A problem with timing devices like wristwatches comprising a charging mechanism with a locking mechanism is reduced operability and visibility when worn by the user.

[0010] US7946756B2 discloses a shock absorber for an oscillating weight of a timepiece. The shock absorber is configured to absorb impacts and protect the suspension of the weight from damage.

[0011] GB709774A discloses a timing device with an automatic winding mechanism comprising an oscillating weight. The timing device comprises a differential gear for controlling the winding process and preventing a motor spring from being overwound.

[0012] US6021098A discloses a device for limiting the acceleration of an oscillating weight, such as an oscillating weight in a wristwatch. The device comprises a bearing raceway configured to brake the weight when it experiences excessive acceleration.

[0013] FR1145972A discloses a stop device for self-winding clock for the purpose of preventing a spring of the clock to wear out. The stop member is configured to be activated after a certain number of revolutions by means of a differential gear.

[0014] EP2360534 A2 discloses a case for timepiece movement with automatic winding comprising a device for locking the oscillating weight, where the case has a back cover in which an oscillating weight locking device is arranged, where the locking 25 device comprises a stop device constituted of a cam, a movable portion and a buffering unit on an internal face of a bottom.

[0015] Summary of the invention

[0016] The object of the present invention is to provide solution to the above-mentioned problems by means of an improved locking mechanism for locking a movable weight of a charging mechanism of a timing device, and a timing device comprising the improved locking mechanism.

[0017] These objects are achieved by means of a locking mechanism for locking a movable weight of a charging mechanism of a timing device, wherein the charging mechanism is configured to charge an energy storage of the timing device by the movement of the movable weight, wherein the locking mechanism comprises a movable locking member configured to be moved from a disengaged state to an engaged state, wherein in the disengaged state, the locking member is free from contact with the movable weight, thereby allowing the movable weight to move such that the energy storage of the timing device is charged, wherein in the engaged state, the locking member is in engagement with the movable weight such that movements of the movable weight are prevented.

[0018] The locking mechanism further comprises an actuator configured to be operated by a user of the timing device for controllably moving the locking member between the disengaged state and the engaged state, wherein the locking mechanism further comprises display means configured to indicate information on the disengaged state and the engaged state of the locking member in dependency of the movement of the locking member.

[0019] The movable weight is configured to be moved by the movements of the user of the time device, thereby charging energy to the energy storage of the timing device. The movable weight is for example rotary arranged in the timing device, such that it rotates around a pivot, such as a shaft, an axis or a ball bearing. The charged energy may be in the form of electric or mechanically stored energy, etcetera.

[0020] The display means are configured to indicate information on the disengaged state and the engaged state of the locking member to the user of the timing device.

[0021] The actuator is configured to be operated by the user such that that locking member is moved between the disengaged state and the engaged state. The locking member or the actuator is also simultaneously interacting with the display means such that the display means is changed to indicate the disengaged state or the engaged state of the locking member in dependency of the movement of the locking member.

[0022] By means of the configuration of the interaction between the locking member, the display means and the actuator, the movable weight is configured to be securely set to the disengaged state and the engaged state by the user while enabling the present state of the locking member to be indicated to the user.

[0023] The movable locking member comprises an engagement portion adapted to engage with a receipt portion of the movable weight when the locking member is in the engaged state. The engagement portion provides a touch point between the locking member and the movable weight.

[0024] The engagement portion is arranged at an end portion of a displaceable shaft.

[0025] According to an embodiment of the invention, the engagement portion comprises one of a metal material and a rubber material, or a combination thereof.

[0026] According to an embodiment of the invention, the actuator comprises one of a turn knob, such as a ‘crown’, and a push button.

[0027] According to an embodiment of the invention, the actuator is adapted to be arranged on a side of the timing device thereby being accessible to the user from front of the timing device without taking it off when worn by the user.

[0028] According to an embodiment of the invention, in the engaged state, the locking member is arranged to be in engagement with a movement of the timing device such that movements of the movement are reduced.

[0029] According to an embodiment of the invention, the actuator is configured to be turned between at least two orientations, thereby inducing an axial displacement of the locking member towards or away from the moveable weight, such that the locking member is set to the engaged state or the disengaged state.

[0030] According to an embodiment of the invention, the locking mechanism comprises a biasing element arranged to act on the actuator, such that the locking member is pushed against at least one of the moveable weight and the movement in the engaged state.

[0031] According to an embodiment of the invention, the biasing element is arranged to act on the actuator such that the locking member is prevented from changing state without user interaction.

[0032] According to an embodiment of the invention, the biasing element is arranged to push the actuator comprising the at least one protruding element into a recess according to the engagement state, or to push the actuator comprising at least one recess onto a protruding element according to the engagement state.

[0033] According to an embodiment of the invention, the actuator comprises a protruding element arranged to engage with a first recess and a second recess extending into the timing device towards the moveable weight, where the second recess extends further than the first recess towards the moveable weight, such that an engagement of the protruding element in the first recess corresponds to the locking member being in the disengaged, and an engagement of the protruding element in the second recess corresponds to the locking member being in the engaged state.

[0034] According to an embodiment of the invention, the actuator comprises a bezel.

[0035] According to an embodiment of the invention, the bezel is adapted to be arranged on top / front of the timing device thereby being accessible to the user from the front of the timing device without taking it off when worn by the user.

[0036] According to an embodiment of the invention, the locking mechanism further comprises translation means arranged to translate rotary movement of the bezel to controllably move the locking member between the disengaged state and the engaged state.

[0037] According to an embodiment of the invention, the translation means comprises a leadscrew mechanism arranged to directly or indirectly interact with the bezel and the locking member allowing reciprocating linear motion of the locking member and thereby driving the engagement portion forward and backward in a mainly linear motion. By means of the first and the second recess, and the protruding element, the protruding element is configured to be firmly maintained in the first and the second recess such that the locking member correspondingly firmly is maintained in the engaged or the disengaged state, while allowing the state of the locking member to be shifted between the engaged or the disengaged state using the actuator.

[0038] According to an embodiment of the invention, the display means comprise a static arranged disc comprising cut-outs, and a further disc arranged under the disc, wherein the further disc is partly visible through the cut-outs wherein the further disc is movable between a first position and a second position, wherein in the first position, the further disc is configured to enable the disengaged state of the locking member to be indicated to the user of the timing device through the cut-outs in the disc, and wherein in the second position, the further disc is configured to enable the engaged state of the locking member to be indicated to the user of the timing device through the cut-outs in the disc.

[0039] According to an embodiment of the invention, the display means comprises a gearing acting on one of the movable locking member and the actuator, such that the further disc is configured to be moved between the first position and the second position in dependency of one of the movement of the movable locking member and the actuator.

[0040] By means of the gearing, the display means is configured to enable the disengaged state and the engaged state of the locking member to be indicated to the user in dependency of the movement of the locking member.

[0041] According to an embodiment of the invention, the further disc is configured to be moved between the first position and the second position in dependency of the rotation of a bezel of the timing device.

[0042] According to an embodiment of the invention, the display means comprises display features readable as a function of orientation or axial translation of the actuator in disengaged and engaged state.

[0043] According to an embodiment of the invention, the display features comprise a part of the actuator being made visible by axial translation of the actuator, where the part of the actuator, preferably is a tube covering the spring. According to an embodiment of the invention, the the display means are adapted to be arranged with the related information visible from the front side of the timing device for making the displayed information available to the user even when wearing the timing device attached to his body.

[0044] The above object of the invention is further obtained by means of a timing device comprising an energy storage, a charging mechanism comprising a movable weight for charging the energy storage and a locking mechanism according to any of above embodiments.

[0045] According to an embodiment of the invention, the movable weight comprises a receipt portion configured to receive the engagement portion of the locking member, when the locking member is in the engaged state.

[0046] According to an embodiment of the invention, the receipt portion comprises one of a hole, a recess, and a groove.

[0047] According to an embodiment of the invention, the energy storage is one of a spring, a battery and a capacitor.

[0048] Description of the figures

[0049] Embodiments of the present invention will now be described, by way of example only, with reference to the following figures, wherein:

[0050] Figure 1-4 discloses a timing device comprising a locking mechanism according to an embodiment of the invention, wherein the locking mechanism comprises a movable locking member, wherein

[0051] In fig. 1 and 3, the movable locking member is in the engaged state, and

[0052] In fig. 2 and 4, the movable locking member is in the disengaged state.

[0053] Fig. 5 discloses an embodiment of display means of the locking mechanism,

[0054] Fig. 6 discloses a further embodiment of the display means.

[0055] Fig. 7 discloses a cross section of the timing device including the locking mechanism.

[0056] Figs. 8-11 disclose further embodiments of the display means and the actuator. Description of preferred embodiments of the invention

[0057] In fig. 1 is a timing device comprising a locking mechanism for locking a movable weight 250 of a charging mechanism according to an embodiment of the invention disclosed.

[0058] The charging mechanism is configured to charge an energy storage (not disclosed) of the timing device by the movement of the movable weight 250.

[0059] The locking mechanism comprises a movable locking member 167 configured to be moved between a disengaged state to an engaged state.

[0060] In fig. 1 and 3, the locking member 167 is in the engaged state.

[0061] In the engaged state, the locking member 167 is in engagement with the movable weight 250, thereby preventing the movement of the movable weight 250 such that movable weight 250 is set to a static or essentially static state. In the engaged state of the locking member 167, the charging mechanism is in a non-operative condition, in which the movement of the movable weight 250 is prevented and accordingly no kinetic energy can be harnessed.

[0062] In fig. 2 and 4, the locking member 167 is in the disengaged state.

[0063] In the disengaged state, the locking member 167 is free from contact with the movable weight 250, such that the charging mechanism is in operative condition involving the allowed movement of the movable weight 250, such that kinetic energy of the movable weight 250 can be harnessed to change the energy storage.

[0064] In the disclosed embodiment of the invention, the locking member 167 is in the form of an axially displaceable shaft. The locking member 167 is axially displaced towards the movable weight 250 when the locking member 167 is set to the engaged state. Correspondingly, the locking member 167 is axially displaced away the movable weight 250 when the locking member 167 is set to the disengaged state. The locking mechanism further comprises an actuator 160 configured to be operated by a user of the timing device for setting the locking member 167 to the disengaged state or the engaged state.

[0065] In the disclosed embodiment of the invention, the actuator 160 is in the form of a crown of the timing device.

[0066] The crown is arranged on the side of the timing device providing for increased accessible to the user when the timing device is attached to the user (e.g. by the wrist) thereby allowing the user to operate the timing device without having to take it off.

[0067] The crown is, from the disengaged state of the locking member 167, configured to be rotated from a first orientation to a second orientation, thereby inducing an axial displacement of the shaft of the locking member 167 towards the movable weight such that the locking member 167 engages with the movable weight 250 and holds the movable weight 250 in a static or essentially static position, see fig. 1 and 3.

[0068] In the disclosed embodiment of the invention, the crown is configured to be rotated in a clockwise direction from the first orientation to the second orientation. In an embodiment, the crown is provided with an indication on the direction of the rotation of the crown for setting the locking member 167 to the engaged state. In the present embodiment, the indication is in the form of an arrow.

[0069] According to an embodiment of the invention, the actuator 160 comprises a protruding portion configured to be brought to engagement in a first recess 168 and a second recess 169 in dependency of the rotation of the crown. The first recess 168 and the second recess 169 are extending into the timing device towards the movable weight 250.

[0070] The second recess 169 is configured such that it is extending further towards the movable weight 250 than the first recess 168. The engagement of the protruding portion in the first recess 168 corresponds to the disengaged state of the locking member 167. Correspondingly, the engagement of the protruding portion in the second recess 169 corresponds to the engaged state of the locking member 167. By means of the first recess 168, the second recess 169 and the protruding portion, the locking member 167 is configured to be displaced axially towards and from the movable weight 250. In the disclosed embodiment of the invention, the locking mechanism comprises a biasing element, such as an elastic element, a lever, etcetera, arranged acting between the crown and a body of the timing device such that the protruding portion is securely maintained engaged in the first recess 168 and the second recess 169 reducing the risk of accidental change between engaged and disengaged state. In the disclosed embodiment of the invention, the biasing element is a spring 164.

[0071] Further, the biasing element is arranged for pushing the locking member 167 towards the moveable weight 250 in the engaged state and towards a movement 240 of the timing device both in the engaged state. Thereby, the biasing element is arranging the movement 240 in a suspended state that allows shocks to be absorbed.

[0072] Preferably, the biasing element is dimensioned in accordance with the weights of parts of the timing device which are dependent of factors such as size and types of materials of the exterior as well as interior parts of the timing device.

[0073] It shall be understood that the crown may alternatively be configured to rotate in a counter clockwise direction. It shall also be understood that alternative indication on the rotation of the crown may be used.

[0074] Correspondingly, the crown is, from the engaged state of the locking member 167, configured to be rotated from the second orientation to the first orientation, thereby inducing an axial displacement of the shaft of the locking member 167 away from the movable weight such that the locking member 167 is disengaged from the movable weight 250, thereby enabling an operative condition of the charging mechanism in which the movable weight 250 is allowed to move while the energy storage is charged with energy.

[0075] In the disclosed embodiment, the crown is configured to be rotated in a counter clockwise direction from the second orientation to the first orientation. In an embodiment, the crown is provided with a further indication on the direction of the rotation of the crown for setting the locking member 167 to the disengaged state. In the present embodiment, the further indication is in the form of an arrow 161 , 162. A typical way of operating the locking mechanism for changing the engagement state, would be for the user to pull out the crown 160 and turn it in the direction of the arrow / information 161 , 162. By turning 180 degrees the user will have the opposite information 162, 161 presented, and by simply letting go of the crown 160 it will snap back towards the case driven by the biasing element, and lock the protruding portion / pin / shaft 163 in position where the recess 168,169 will determine the engagement state.

[0076] It shall be understood that the crown may alternatively be configured to rotate in a clockwise direction. It shall also be understood that alternative further indication on the rotation of the crown may be used.

[0077] In an alternative embodiment of the invention, the actuator 160 is in the form of a bezel 120.

[0078] The bezel 120 is arranged on the top / front of the timing device accessible to the user when the timing device is attached to the user (e.g. by the wrist) thereby allowing the user to operate the timing device without having to take it off.

[0079] The (exterior) bezel 120 is rotatably arranged to mechanically engage different setting modes of the timing device, like contributing to moving the locking member 167 between a disengaged state to an engaged state. The bezel 120 may be arranged to be turned clockwise and counterclockwise between two positions wherein one of the positions the moveable weight 250 is free and in the other position movements of the moveable weight 250 are prevented.

[0080] The bezel 120 can be mounted by screws or friction to the middle case 130. It can also be secured by gaskets to ensure a waterproof case and smooth travel between the two positions. The bezel 120 front / top can also be formed with grooves or texture to ensure better grip and easier operation of the mechanism.

[0081] The bezel 120 or inner wall of the middle case 130 can have grooves and ball bearings to ensure smooth travel between the two positions. The grooves together with the ball bearings are arranged to ensure that the bezel 120 is fixedly maintained in the two positions, to reduce the risk of the bezel 120 being displaced by accident and also to reduce wiggling. The present embodiment of the invention further comprises translation means arranged to translate the rotary movement of the bezel 120 to controllably moving the locking member 167 between the disengaged state and the engaged state. The translation means (not shown in the figure) may comprise a leadscrew mechanism arranged to directly or indirectly interact with the bezel 120 and the locking member 167 allowing reciprocating linear motion of the locking member 167 and thereby driving the engagement portion forward and backward in a mainly linear motion (sliding).

[0082] The leadscrew mechanism may comprise a tube with internal threads and screw with corresponding threads, where either the tube is fixed and the screw rotates or vice versa. The bezel 120 may be arranged with fixed teeth or a toothed ring beneath in contact with the leadscrew mechanism possibly arranged to cooperate with corresponding grooves in a mating part like a gear, clutch hub, or coupling allowing the axial movement.

[0083] The locking mechanism further comprises display means configured to indicate information on the disengaged state and the engaged state of the locking member 167 in dependency of the movement of the locking member 167.

[0084] With reference to fig. 5, the display means comprise a disc 210 that is configured to be stationary. The display means comprises a further disc 213 located under the disc 210 such that the further disc 213 is at least partly shielded by the disc 210.

[0085] The display means further comprises a gearing 165 acting on the movable locking member 167 such that the further disc 213 is moved between a first position and a second position in dependency of the movement of the movable locking member 167. In the disclosed embodiment, the gearing 165 comprises a toothed wheel that is directly or indirectly acting on the locking member 167 and the further disc 213.

[0086] The further disc 213 comprises information on the state of the locking member. The disc 210 comprises cut-outs 211 configured to enable the information on the further disc 213 relating on the state of the locking member to be visible to the user in dependency of the first position and the second position of the further disc 213.

[0087] In the first position, the cut-outs 211 in the disc 210 are configured to enable information on the disengaged state or alternatively a normal operation of the timing device, that is, a state in which the charging mechanism in operative condition, to be visually indicated to the user of the timing device.

[0088] In fig. 4, the further disc 213 is in the first position and the further disc 213 indicates the time positions ‘10’, ‘11’, 12’, T, ‘2’ at an upper part from the left to the right, and the time positions ‘8’, 7’, ‘6’, ‘5’, ‘4’ at a lower part from the left to the right, which time positions are visible to the user through the cut-outs 211 in the disc 210.

[0089] In the second position, the cut-outs 211 in the disc 210 are configured to enable information on the engaged state of the locking member 167 to be visually indicated to the user of the timing device.

[0090] In fig. 3, the further disc 213 is in the second position and the further disc 213 indicates engaged position of the locking member 167. In the disclosed embodiment, the further disc 213 indicates the information ‘R’, ‘O’, ‘T’, ‘O’, ‘R’ at an upper part from the left to the right, and the information ‘B’, ‘L’, ‘O’, ‘O’, ‘K’ at a lower part from the left to the right, which information is visible to the user through the cut-outs 211 in the disc 210.

[0091] With reference to fig. 3 and 4 and the description above, the display means are arranged such that the related information is visible from the front side of the timing device. The arrangement is adapted making the displayed information available to the user even when wearing the timing device normally attached to his body without taking it off.

[0092] With reference to fig. 6 and 7, the gearing 165 comprises a set of ball bearings 214 arranged around the further disc 213. The ball bearings 214 has the function of providing a smooth movement between first position and the second position of the further disc 213. The ball bearings 214 further has the function of keeping the further disc 213 centred within an outer cage 130, which comprising grooves 215, 216 on its the inner wall. The grooves 215, 216 together with the ball bearings 214 have the function of ensuring that the further disc 213 is maintained at a fixed state when arranged in the first position or the second position. This ensures that the information visually indicated to the user of the timing device remains stable and reliable, even when the device is shaken or subjected to shocks. The display means further comprises a base plate 217 configured to support and hold the further disc 213. The display means may present status information through the cut-outs 211 in the disc 210, but this can also be done through a dial / face 220 of the timepiece in form of a series of cut-outs.

[0093] With reference to fig. 6 and 7, in the disclosed embodiment of the invention, the timing device comprises a further crown 150 configured for the main functions of the timing device, such as setting time, date, etcetera. It shall be understood that in an alternative embodiment, the actuator 160 in the form of the crown may be used for both operating the for locking member 167 between the disengaged state and the engaged state, and operating the main functions of the timing device, such as setting time, date, etcetera.

[0094] With reference to Figs. 1-4 and 7, in the disclosed embodiment of the invention, the timing device comprises an exterior bezel 120.

[0095] Figs. 8-11 discloses further alternative embodiments of the invention as briefly summarized below.

[0096] In general, the display means can be configured to act as a multipurpose function and to display differently based on the desired outcome. The cut-outs 211 of the dial / face 220 and / or inner bezel / disc 210 and the further disc 213 can be custom built and positioned / located in different places. The number of cut-outs 211 and the further disc 213 can be adjusted and positioned to fit a variety of information (numbers, letters, signs, colors etc) to enhance the visibility and display of features.

[0097] Below, alternative embodiments of the display means are briefly presented.

[0098] With reference to Fig. 8, the display means acts as an AM / PM indicator, where the 12 cut-outs 211 on inner bezel / disc 210 show the further disc 213 as time in the form of 1-12 when deactivated and 13-24 when activated. This makes it convenient to read the time (hour and minute hands) as a 24-hour dial by shifting between the desired (day or night) values displayed. Even change between roman numerals and Arabic numerals may be provided.

[0099] With reference to Fig. 9, an embodiment is presented where a cut out 211 in the inner bezel 210 displays text on the further disc 213 as «ON» and «OFF», here related to the reducing movements of the movement 240 referenced as suspension system.

[0100] Fig. 10 presents an embodiment with a cut-out 211 at 3 o’clock on the main dial 220 displaying the further disc 213 as «ON» and «OFF» when shifting between activating and deactivating the locking mechanism, here referred to as the rotor block.

[0101] Additionally, Fig. 11 presents an embodiment where the bezel 120 functions as an actuator for activating / deactivating the locking mechanism.

[0102] In the case of using the bezel 120 as actuator to operate a function, the user can turn the bezel 120 either clockwise or counter clockwise for activation or deactivation. In this embodiment information is presented on the bezel 120 to inform the user of the direction of movement to achieve the desired result.

[0103] The present invention is not limited to the embodiments disclosed but may be varied and modified within the scope of the claims. For example, it shall be understood that in an alternative embodiment of the invention, the further disc 213 may be configured stationary while the disc 210 is configured to be moved between a first position and a second position in dependency of the movement of the movable locking member 167. The gearing 165 is in this embodiment acting on the movable locking member 167 such that the disc 210 is moved between a first position and a second position in dependency of the movement of the movable locking member 167.

Claims

Claims1. A locking mechanism for locking a movable weight (250) of a charging mechanism of a timing device, wherein the charging mechanism is configured to charge an energy storage of the timing device by the movement of the movable weight, wherein the locking mechanism comprises a movable locking member (167) configured to be moved between a disengaged state to an engaged state, wherein in the disengaged state, the locking member (167) is free from contact with the movable weight (250), thereby allowing the movable weight to move such that the energy storage of the timing device is charged, wherein in the engaged state, the locking member (167) is in engagement with the movable weight such that movements of the movable weight are prevented, characterized in that the locking mechanism comprises an actuator (160) configured to be operated by a user of the timing device for controllably moving the locking member (167) between the disengaged state and the engaged state, wherein the locking mechanism further comprises display means configured to indicate information on the disengaged state and the engaged state of the locking member in dependency of the movement of the locking member, wherein the movable locking member comprises an engagement portion adapted to engage with a receipt portion of the movable weight when the locking member is in the engaged state, and wherein the engagement portion is arranged at an end portion of a displaceable shaft.

2. The locking mechanism according to claim 1 , wherein the engagement portion comprises one of a metal material and a rubber material, or a combination thereof.

3. The locking mechanism according to any of the previous claims, wherein the actuator comprises one of a turn knob and a push button.

4. The locking mechanism according to claim 3, where the actuator is adapted to be arranged on a side of the timing device thereby being accessible to the user from front of the timing device without taking it off when worn by the user.

5. The locking mechanism according to one of the previous claims, wherein in the engaged state, the locking member (167) is arranged to be in engagement with amovement (240) of the timing device such that movements of the movement (240) are reduced.

6. The locking mechanism according to one of the previous claims, wherein the actuator (160) is configured to be turned between at least two orientations, thereby inducing an axial displacement of the locking member (167) towards or away from the moveable weight (250) such that the locking member (167) is set to the engaged state or the disengaged state.

7. The locking mechanism according to one of the previous claims, where the locking mechanism comprises a biasing element arranged to act on the actuator (160) such that the locking member (167) is pushed against (at least one) of the moveable weight (250) and the movement (240) in the engaged state.

8. The locking mechanism according to claim 7, where the biasing element is arranged to act on the actuator (160) such that the locking member (167) is prevented from changing state without user interaction.

9. The locking mechanism according to any of claims 7-8, where the biasing element is arranged to push the actuator comprising the at least one protruding element (163) into a recess according to the engagement state, or to push the actuator comprising at least one recess onto a protruding element according to the engagement state.

10. The locking mechanism according to claim 9, where the actuator (160) comprises a protruding element (163) arranged to engage with a first recess (168) and a second recess (169) extending into the timing device towards the moveable weight (250), where the second recess (169) extends further than the first recess (168) towards the moveable weight (250), such that an engagement of the protruding element (163) in the first recess (168) corresponds to the locking member (167) being in the disengaged, and an engagement of the protruding element (163) in the second recess (169) corresponds to the locking member (167) being in the engaged state.

11. The locking mechanism according to any of the claim 1-2, where the actuator (160) comprises a bezel (120).1812. The locking mechanism according to claim 11 , where the bezel (120) is adapted to be arranged on top / front of the timing device thereby being accessible to the user from the front of the timing device without taking it off when worn by the user.

13. The locking mechanism according to claim 11-12, further comprising translation means arranged to translate rotary movement of the bezel (120) to controllably move the locking member (167) between the disengaged state and the engaged state.

14. The locking mechanism according to claim 13, where the translation means comprises a leadscrew mechanism arranged to directly or indirectly interact with the bezel (120) and the locking member (167) allowing reciprocating linear motion of the locking member (167) and thereby driving the engagement portion forward and backward in a mainly linear motion.

15. The locking mechanism according to any of the previous claims, wherein the display means comprise a static arranged disc (210) comprising cut-outs (211), and a further disc (213) arranged under the disc (210), wherein the further disc (213) is partly visible through the cut-outs (211), wherein the further disc is movable between a first position and a second position, wherein in the first position, the further disc (213) is configured to enable the disengaged state of the locking member to be indicated to the user of the timing device through the cutouts (211) in the disc (210), and wherein in the second position, the further disc (213) is configured to enable the engaged state of the locking member to be indicated to the user of the timing device through the cut-outs (211) in the disc (210).

16. The locking mechanism according to claim 15, wherein the display means comprises a gearing (165) acting on one of the movable locking member (167) and the actuator (160) such that the further disc (213) is moved between the first position and the second position in dependency of one of the movement of the movable locking member (167) and the actuator (160).

17. The locking mechanism according to any of the previous claims, wherein the display means is configured to be moved between the first position and the19 second position in dependency of the rotation of a bezel of the timing device.

18. The locking mechanism according to one of the previous claims, wherein the display means comprises display features readable as a function of orientation or axial translation of the actuator (160) in disengaged and engaged state.

19. The locking mechanism according to claim 18, comprising an actuator (160) according to claim 3-10, where the display features comprise a part of the actuator (160) being made visible by axial translation of the actuator (160), where the part of the actuator (160) preferably is a tube covering the spring (164).

20. The locking mechanism according to one of the previous claims, where the display means are adapted to be arranged with the related information visible from the front side of the timing device for making the displayed information available to the user even when wearing the timing device attached to his body.21 .A timing device comprising an energy storage, a charging mechanism comprising a movable weight for charging the energy storage and a locking mechanism according to any of claim 1-20.

22. The timing device according to claim 21 , wherein the movable weight comprises a receipt portion configured to receive the engagement portion of the locking member, when the locking member is in the engaged state.

23. The timing device according to any of claims 21-22, wherein the receipt portion comprises one of a hole, a recess, and a groove.

24. The timing device according to any of claims 21-23, wherein the energy storage is one of a spring, a battery and a capacitor.

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