• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Mechanism for measuring a physical activity, comprising: an oscillating mass (1) about an axis of rotation a block (2) displaceable under the action of gravity to limit oscillations of the oscillating mass in a horizontal position, and to increase the amplitude of these oscillations in vertical position. Such a mechanism may for example be used to count steps in a pedometer.
    公开号:CH712890A2
    申请号:CH01165/16
    申请日:2016-09-08
    公开日:2018-03-15
    发明作者:Francis Pierre；Arbona Salvador
    申请人:Guenat Sa Montres Valgine；
    IPC主号:
    专利说明:

    TECHNICAL FIELD [0001] The present invention relates to a mechanism with an oscillating mass for measuring physical activity. State of the art [0002] Mechanical watches are usually driven by the energy stored in a barrel. The barrel is reassembled by means of the crown or, in the case of automatic watch, thanks to the oscillations of an oscillating mass set in motion by the movements of the wrist.
    Furthermore, there are known in the state of the art wristwatches and other devices worn on the wrist that determine the physical activity of the wearer. Some electronic watches are for example provided with a step counter with an accelerometer that determines the number of steps performed by the wearer. Other sports watches can display the distance traveled during a race, the altitude difference, or other parameters related to physical activity. These accelerometers are usually made using a MEMS component and therefore require a power source, for example a battery.
    [0004] EP0060361 A1 and EP 0 277 011 both relate to an electronic watch comprising a pendulum whose oscillations make it possible to determine the number of steps of the user.
    Also known in the state of the art mechanical pedometers that measure the number of oscillations of an oscillating mass to determine the number of steps of the wearer. The accuracy of this type of pedometer is however very limited; indeed the oscillating mass is oscillated by all movements of the wrist, even if the user does not walk. Even activities that involve only limited calorie consumption, such as handwriting or eating, swing the mass and are interpreted as steps.
    BRIEF SUMMARY OF THE INVENTION [0006] An object of the present invention is therefore to propose an improved mechanism for measuring physical activity.
    In particular, an object of the present invention is therefore to provide a more appropriate mechanism for measuring the physical activity of a user, and which provides an indication more representative of the physical activity of the user.
    According to the invention, these objects are achieved in particular by means of a mechanism for measuring a physical activity, comprising: an oscillating mass; a block displaceable under the action of gravity to limit oscillations of the oscillating mass in a horizontal plane, and to increase the amplitude of these oscillations in a vertical plane.
    In wristwatches, the oscillating mass is most often in the plane of the watch movement, that is to say parallel to the platen of the movement and therefore to the outer face of the wrist that wears the watch. It oscillates around an axis substantially perpendicular to the outer face of the wrist.
    By integrating the mechanism above in a wristwatch or another bracelet, the oscillating weight oscillates when the outer face of the wrist is vertical, for example during walking or running, but hardly oscillates when the The outer surface of the wrist is horizontal, for example during office work or other activities while sitting or lying down.
    This mechanism therefore allows to count the oscillations when the outer face of the wrist is in a substantially vertical position, and do not count when the outer face of the wrist is in substantially horizontal position.
    The outer face of the wrist is indeed in a substantially vertical position when running, and in a substantially horizontal position during more static activities such as writing, reading or office work.
    In a preferred embodiment, the center of mass of the mass-oscillating-block inertia moves relative to the axis of rotation when the oscillating mass is inclined. Therefore, the unbalance of the oscillating assembly depends on the orientation of the axis of rotation of this set.
    In a preferred embodiment, the axis of inertia of the entire oscillating mass -block is substantially coincident with the axis of rotation when the axis of rotation is vertical, or close to the vertical position. The result is an assembly which is balanced, that is to say without any imbalance, and which thus hardly oscillates around the axis of rotation, even when it is subjected to accelerations.
    When the user walks or runs, the axis of rotation is found in a horizontal or almost horizontal position. In this position, the axis of inertia of the mass-oscillating plus block assembly is remote from the axis of rotation; this displacement of the block causes an unbalance, which allows the assembly to oscillate around the axis of rotation if it is subjected to accelerations.
    In one embodiment, the mechanism for measuring a physical activity comprises an elastic return element arranged to push the block in a first position relative to the mass when the axis of rotation is vertical, and to allow the block to move under the effect of gravity in a second position relative to the oscillating mass when the axis of rotation is horizontal.
    The movement of the block against the action of the return springs is possible at least in an orientation of the oscillating mass in the vertical plane. For example, the movement of the block is possible when the center of gravity of the block is below the center of rotation.
    According to one aspect, the invention relates to a mechanism in which the oscillations of an assembly with a block is an oscillating mass are possible when the center of gravity of the block is below the axis of rotation.
    The position of the block acts on the amplitude of oscillations of the oscillating mass.
    The elastic return element allows to bring the axis of inertia of the axis of rotation in a horizontal position, and reduce in this position the unbalance.
    The mechanism may comprise a guide axis integral with the oscillating mass, the sliding block along this guide axis. This ensures a rectilinear movement of the block.
    In a preferred embodiment, the mechanism comprises two guide axes parallel to each other and integral with the oscillating mass. The block slides along these two guide axes. The rectilinear guidance of the block is thus more precise.
    The guide axis or axes may consist of rods passing through the block.
    The oscillating mass may comprise a window. In one embodiment, the block can slide in this window between the first and the second position, and vice versa.
    The oscillating mass advantageously has a substantially circular periphery. A constant radius facilitates the realization of an unbalanced assembly when the block is in first position.
    The window through the oscillating mass changes the mass distribution around the center of distribution and therefore creates an imbalance. This unbalance is compensated when the block is in first position, but not when the block is in second position.
    The density of the block is preferably higher than the density of the oscillating mass. The block which has a smaller surface area than the recessed window is therefore sufficient to compensate for the unbalance created by this window.
    Alternatively, the block is thicker than the oscillating weight.
    The block may have a semicircle shape.
    The window may have a semicircle shape with a radius greater than that of the block.
    At least one return element of the half block can be housed in the window through the oscillating mass. This return element can push the block inside the window towards the center of rotation.
    A return member may be constituted by at least one leaf spring inside the window.
    One end of the spring blade can be connected to the block, the other being in abutment against the inner edge of the window.
    Several blocks may be provided in one or more windows, or even outside the oscillating mass.
    In another embodiment, the oscillating block can be arranged to brake the oscillations of the oscillating mass in the horizontal position, and to reduce this braking in the vertical position.
    The oscillating block can be guided on a rail or a slide connected to a movement element other than the oscillating weight. It may not oscillate with the mass. It can exert a friction which attenuates the amplitude of oscillations of the oscillating mass, braking being more important in first position than in second position.
    The invention also relates to a mechanical watch comprising the mechanism according to one of the embodiments above, and a physical activity indicator actuated by the oscillating weight.
    The data representative of the physical activity can for example be determined by an integration of the oscillations undergone by the oscillating mass since a time of zeroing, or per unit of time.
    By data representative of physical activity is meant in this application data whose primary function is to inform the wearer of the watch on the efforts made during physical activity. Data are said to be representative of the physical activity of a person when they are intended to determine the level of physical activity of the person and to indicate whether this activity is sufficient, for example in the context of a training or formatting, or if it needs to be increased. The physical data may comprise, for example, an estimate of the number of steps taken, a distance traveled, an energy supplied from the beginning of the measurement, or an energy per unit of time.
    权利要求:
    Claims (13)
    [1]
    BRIEF DESCRIPTION OF THE FIGURES [0040] Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which: FIG. 1 illustrates a perspective view of a mechanism according to the invention. Fig. 2 illustrates a top view of a mechanism according to the invention. Fig. 3 illustrates a sectional view of a mechanism according to the invention. Example (s) of Embodiment of the Invention [0041] An example of a mechanism is illustrated in FIGS. 1 to 3. The mechanism is intended to be integrated into a portable device, for example a mechanical wristwatch, a bracelet, a pedometer, etc. The oscillations of this set are used to determine the physical activity of the wearer, for example the number of steps performed. Optionally, these oscillations can be used to charge a cylinder and provide the energy required to operate the device. In a variant, the device may comprise an additional oscillating weight and dedicated to the winding of the main barrel. The illustrated mechanism comprises an oscillating weight 1 mounted on an axis C which allows it to oscillate in a plane perpendicular to this axis. An undescribed gear train makes it possible to transmit these oscillations to a watch movement, a pedometer or other device that determines, for example, the number of oscillations, possibly taking into account their amplitude, to determine and display a magnitude representative of the activity. physical carrier. This wheel is within the reach of the skilled person and will not be described. In one embodiment, the train comprises a unidirectional drive system and transmits only the oscillations in one direction, the oscillations in the other direction being free. The oscillating mass 1 illustrated is substantially cylindrical in shape, with a substantially circular periphery. It comprises a window 10 substantially semicircular in plan view. This window modifies the mass distribution of the oscillating mass 1 around the center of rotation C and thus creates an unbalance on the opposite side to the window. A block 2 is mounted in this window 10 on two guide rails 4A, 4B which allow it to slide so as to approach the center of rotation (in first position) or otherwise to move away under the effect of gravity (in second position). Recoil springs, here leaf springs 3A, 3B, are fixed by a screw or a pin on the periphery of the block 2. The opposite end of the leaf spring rests on the inner rim of the window 10 so as to exert a restoring force which pushes the oscillating mass towards the center of rotation C. The block 2 illustrated in this example has a substantially semicircular shape; thanks to a higher density, and / or increased thickness, its moment of inertia compensates for the unbalance created by the window 10 when the block is in first position, that is to say close to the center of rotation. In this position, the entire oscillating mass 1 plus block 2 is balanced, so that an acceleration on this assembly does not cause rotation about the axis C. [0046] When the mechanism is in a substantially vertical position, that is, when the axis of rotation C is substantially horizontal, and the window 10 is downwards from the oscillating mass, the weight of the block 2 opposes the restoring force of the springs 3A, 3B, this allows the block 2 to move down and away from the center of rotation C. The moment of inertia I of the assembly is then removed from the axis of rotation C, which creates an unbalance and allows the set to oscillate if he is subjected to accelerations. This arrangement thus allows the assembly 1.2 to oscillate under the effect of accelerations when the oscillating mass 1 is in a substantially vertical plane with the window 10 down, and almost no oscillate under the effect of accelerations when the oscillating mass 1 is in a horizontal plane. More generally, the oscillating assembly has an unbalance as soon as the center of gravity of the body 2 is below the axis of rotation c, which allows the body 2 to move in the window 10 under the effect of gravity. The return force of the return spring blades 3A, 3B is preferably chosen so as to create a progressive displacement of the oscillating mass 1 between these two positions, and thus to modify the amplitude of the oscillations caused by a given acceleration according to the inclination of the plane of the oscillating mass. It is thus possible to perform a watch movement or a pedometer that responds to wrist movements when the outer face of the wrist is vertical (for example during walking or running), and which does not react, or less, when the outer face of the wrist is horizontal. claims
    A mechanism for measuring physical activity, comprising: an oscillating mass (1) about an axis of rotation (C); a block (2) subjected to the action of gravity so as to move and limit oscillations of the oscillating mass (1) when the axis of rotation (c) is vertical, and to increase the amplitude of these oscillations when the axis of rotation (c) is horizontal.
    [2]
    2. Mechanism according to claim 1, comprising: an elastic return element (3A, 3B) arranged to push the block (2) in a first position relative to the oscillating mass (1) when the axis of rotation (C) is vertical, and to allow the block to move under the effect of gravity in a second position with respect to the oscillating mass when said axis of rotation is horizontal, the position of the block acting on the amplitude of the oscillations of the mass oscillating.
    [3]
    3. Mechanism according to claim 2, said block (2) oscillating with said oscillating mass (1), the axis of inertia (I) of the mass-oscillating-block assembly being substantially coincident with said axis of rotation (C). ) in the first position, and being remote from this axis of rotation in the second position.
    [4]
    4. Mechanism according to claim 3, comprising a guide axis (4A, 4B) integral with said oscillating mass (1), the block (2) sliding along said guide axis.
    [5]
    5. Mechanism according to claim 4, comprising two guide axes (4A, 4B) parallel to each other and integral with said oscillating mass (1), the block (2) sliding along said guide axes.
    [6]
    6. Mechanism according to one of claims 4 or 5, the or the guide axes (4A, 4B) passing through said block (2).
    [7]
    7. Mechanism according to one of claims 3 to 6, said oscillating mass (1) comprising a window (10), said block sliding in said window.
    [8]
    8. Mechanism according to claim 7, the periphery of the oscillating mass (1) being substantially circular, said window (10) having a semicircle shape.
    [9]
    9. Mechanism according to one of claims 7 or 8, said biasing member (3A, 3B) being housed in said window (10).
    [10]
    10. Mechanism according to claim 9, said return element being constituted by at least one leaf spring (3A, 3B).
    [11]
    11. Mechanism according to claim 10, one end of said leaf spring (3A, 3B) being bonded to the block (2), the other being in abutment against the inner edge of the window (1).
    [12]
    12. Mechanism according to one of claims 1 or 2, said block (2) being arranged to slow oscillations of the oscillating mass (1) in the first position, and to reduce this braking in the second position.
    [13]
    13. Mechanical watch comprising the mechanism of one of the preceding claims and a physical activity indicator actuated by said oscillating weight.
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    同族专利:
    公开号 | 公开日
    CH712890B1|2020-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01165/16A|CH712890B1|2016-09-08|2016-09-08|Oscillating weight mechanism for measuring physical activity.|CH01165/16A| CH712890B1|2016-09-08|2016-09-08|Oscillating weight mechanism for measuring physical activity.|
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