CH705322A2 - Movable clutch. - Google Patents

Movable clutch. Download PDF

Info

Publication number
CH705322A2
CH705322A2 CH12582011A CH12582011A CH705322A2 CH 705322 A2 CH705322 A2 CH 705322A2 CH 12582011 A CH12582011 A CH 12582011A CH 12582011 A CH12582011 A CH 12582011A CH 705322 A2 CH705322 A2 CH 705322A2
Authority
CH
Switzerland
Prior art keywords
wheel
clutch
characterized
pawl
direction
Prior art date
Application number
CH12582011A
Other languages
French (fr)
Inventor
Pierre Mahiou
Original Assignee
Celsius X Vi Ii
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Celsius X Vi Ii filed Critical Celsius X Vi Ii
Priority to CH12582011A priority Critical patent/CH705322A2/en
Publication of CH705322A2 publication Critical patent/CH705322A2/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00Automatic winding up
    • G04B5/20Automatic winding up by movements of other objects, e.g. by opening a hand-bag, by opening a case, by opening a door; Winding up by wind power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00Freewheels or freewheel clutches
    • F16D41/12Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00Click devices; Stop clicks; Clutches
    • G04B11/006Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216Foldable in one direction, i.e. using a one degree of freedom hinge

Abstract

The invention relates to a clutch mobile comprising a first wheel (1), a second wheel (3) coaxial with the first wheel and, preferably, surrounding the first wheel, and pawls (4) related to the second wheel and cooperating with a toothing (9) of the first wheel to allow one of said wheels to drive the other wheel with it in a first direction of rotation and to rotate in a second direction, opposite to the first direction, without driving the other wheel. Each pawl (4) has several teeth (5) each cooperating with said toothing. Such a clutch mobile can be used to raise a mainspring, for example a portable electronic device such as a flip phone.

Description

The present invention relates to a clutch mobile comprising two coaxial wheels and arranged to allow one of the wheels to drive the other with it in a first direction of rotation and to rotate in a second direction opposite to the first sense, without driving the other wheel. More particularly, the present invention aims to provide such a clutch mobile whose friction is maximum in the first direction of rotation and minimum in the second direction of rotation. This characteristic can be interesting when one seeks to collect the mechanical energy deployed by the user of a portable electronic device consisting of two movable parts articulated around a hinge, as is the case in the mechanisms described in documents FR 2 920 628, GB 2 399 984 and EP 2 219 279.

Indeed, to maximize the collected mechanical energy, it may be necessary to oppose a maximum resistance through springs and gear reduction. For this, it is necessary that the connection between the wheels of the clutch mobile is able to support high torque in the first direction of rotation, which requires to maximize the coefficient of friction, while in the opposite direction of rotation, the coefficient of friction should be as low as possible.

[0003] Clutch mobiles comprising a coaxial wheel and pinion are known in the watchmaking field, the pinion comprising a teeth with wolf teeth with which one or more ratchets mounted on the wheel cooperate. Rotation of the wheel in one direction drives the pinion through the pawl (s), whereas rotation of the wheel in the opposite direction does not cause the pinion, the pawl (s) unclipping on the toothing of the pinion. Wolf of the pinion. These clutch mobiles do not allow the transmission of high torque.

The present invention aims to overcome this disadvantage by providing a clutch mobile comprising: a first wheel, a second coaxial wheel at the first wheel, and at least one pawl connected to the second wheel and cooperating with a toothing of the first wheel to allow one of said wheels to drive the other wheel with it in a first direction of rotation and to rotate in a second opposite direction in the first sense, without driving the other wheel, characterized in that the or each pawl has a plurality of teeth each cooperating with said toothing.

The present invention, judiciously placed in the hinge hinge of a portable electronic device consisting of two moving parts, such as a flip phone, thus allows to collect a maximum of mechanical energy, for example by raising a spring barrel through a reduction gear train, which requires supporting large torques.

Moreover, the juxtaposition of clutch mobiles according to this invention and arranged symmetrically allows to develop a system capable of collecting a maximum of mechanical energy both at the opening and closing of such a device. flip phone.

Particular embodiments of the invention are defined in the appended dependent claims.

Other features and advantages of the present invention will appear on reading the following detailed description with reference to the accompanying drawings, in which: <tb> fig. 1 <sep> is a perspective view of a clutch mobile according to a preferred embodiment of the invention, comprising central, a peripheral wheel and movable pawls with several teeth; <tb> fig. 2 <sep> is a partial plan view of the clutch mobile illustrated in FIG. 1, showing one of the movable pawls; <tb> fig. 3 <sep> is a plan view of the clutch mobile illustrated in FIG. 1; <tb> fig. 4 <sep> is a plan view of the clutch mobile illustrated in FIG. 1, in a configuration where the central wheel rotates without driving the peripheral wheel; <tb> fig. 5 <sep> is a partial plan view of the clutch mobile illustrated in FIG. 1, in a configuration where the central wheel rotates without driving the peripheral wheel; <tb> figs. 6A and 6B <sep> are perspective views of the clutch mobile illustrated in FIG. 1 wearing caps, then fitted with a spacer; <tb> fig. 7 <sep> is a perspective view of a set of two clutch mobiles according to the invention secured by a spacer; <tb> fig. 8 <sep> is a perspective view of a device incorporating two clutch mobiles according to the invention, intended to be housed in the hinge of a flip phone.

A clutch mobile according to a preferred embodiment of the invention is illustrated in FIGS. 1 to 6. It comprises a central or inner wheel 1 pierced at its center with a hole 2 of square section which will allow a shaft to print to said wheel a rotational movement about its axis. The clutch mobile also comprises a peripheral or outer wheel 3 coaxially surrounding the central wheel 1. The connection between the central wheel 1 and the peripheral wheel 3 is provided by a plurality of movable pawls 4 cooperating with a unidirectional toothing 9, teeth wolf of the central wheel 1. The pawls 4 are each in the form of a rigid part comprising a tooth alignment 5 having a shape in wolf teeth complementary to that of the toothing 9. The pawls 4 are housed in cavities 6 formed in the peripheral wheel 3 and are each held in place and applied against the central wheel 1 by a leaf spring 7 itself stuck in a notch 8 formed in the peripheral wheel 3. Preferably, each leaf spring 7 is in gooseneck shape and is in one piece with the corresponding ratchet 4, as shown. In the example shown, the pawls 4 are four in number and the teeth 5 of each pawl 4 are six in number.

The orientation of the teeth of the toothing 9 and teeth 5 is such that the steeply sloping flanks of the teeth 5 abut against the steeply sloping flanks of the teeth of the toothing 9 when the central wheel 1 rotates in a first direction S1 (Figures 1 and 3), thus making the pawls 4 integral with the central wheel 1, which corresponds to the engaged state of the clutch mobile (in the figures the direction S1 is the counterclockwise direction) . Preferably, the alignment of the teeth 5 is arranged to match the circumference of the central wheel 1 so as to offer maximum friction when said central wheel is rotated in the direction S1. For this purpose, the ends or tips of the teeth 5 pawls 4 are on the same circle centered on the axis of the clutch mobile, that is to say the common axis of the wheels 1 and 3, when the wheel Central 1 rotates in the S1 direction. In this direction S1 of rotation of the central wheel 1, each pawl 4 is in abutment against a flattened portion 10 of the corresponding cavity 6, so that through the pawls 4 the peripheral wheel 3 is integral with the central wheel 1 and can thus, by means of a peripheral toothing 3a it has, cause a mechanism.

As shown in FIGS. 1 and 3, when the central wheel 1 is driven by its shaft in the direction of the clutch S1, the contact between the central wheel 1 and each pawl 4 is ensured by six teeth 5 and six teeth of the toothing 9, which ensures significant friction. As these are four pawls 4 which provide the connection between the central wheel 1 and the peripheral wheel 3, a total of twenty-four teeth 5 cooperate with twenty-four teeth of the toothing 9, which makes the peripheral wheel 3 strongly integral with the central wheel 1 and thus allows to communicate significant torque from one wheel to another.

Figs. 2, 4 and 5 show the clutch mobile when the shaft which drives the central wheel 1 prints a rotation in a second direction S2, opposite the first direction S1, corresponding to the disengaged state of the clutch mobile (in the figures it is the clockwise direction). The toothing 9 of the central wheel 1 then slides on the low slope sides of the teeth 5 of the mobile pawls 4. These are alternately raised by the toothing 9 against the action of the springs 7 and folded in the toothing 9 by these springs 7 , and the peripheral wheel 3 is thus not driven. The arrangement of the leaf springs 7 is such that when the pawls 4 are lifted, they tilt while bearing against the flats 10 so that only the tooth 5 furthest upstream (in the direction S2) of each ratchet 4 remains in contact with the toothing 9, as shown in FIGS. 2 and 5. This has the effect of minimizing the friction of the entire system and opposing an extremely low torque to the rotation of the central wheel 1.

Figs. 6A and 6B show the clutch mobile equipped with hoods 11 (only one of which is visible) which cover the two faces of the clutch mobile by fitting into holes 12 formed for this purpose in the peripheral wheel 3. The hoods 11 particularly constrain the pawls 4 to remain located within the cavities 6 formed in the peripheral wheel 3.

In FIG. 6B is shown a spacer 13 which will secure the clutch mobile to the rest of the device it equips, for example a mobile phone.

A device is illustrated in FIGS. 7et 8où two clutch mobiles 14 and 15 according to the invention are arranged symmetrically and secured by the spacer 13. The clutch mobiles 14 and 15 are arranged so that their central wheels 1 are parallel and that the holes 2 which pierce said central wheels are perfectly aligned, so that the same square section shaft can drive both wheels at a time. In addition, the symmetrical arrangement of the clutch mobiles 14 and 15 makes it possible to ensure that whatever the direction of rotation of the shaft which will pass through the hole 2, it will cause one of the clutch mobiles to move in the opposite direction. clutch, and the other in the direction of disengagement. The device thus obtained, possibly dressed with an outer cover 16 can be housed in the hinge of a folding device such as a flip phone so that each opening or closing of said device drives one of the clutch mobiles in the direction of the clutch with a maximum coefficient of friction, while the central wheel of the other clutch mobile turn in the direction of disengagement generating minimal friction. Each clutch mobile 14, 15 can be used to drive a unidirectional device for storing mechanical energy fitted to the apparatus, such as a barrel-type device comprising a spiral spring housed in a drum, a shaft around which is rotatably mounted on the drum and to which is fixed the inner end of the spring and a ratchet wheel rigidly mounted on the shaft, this ratchet being driven, via a gear, by the peripheral wheel of the mobile clutch to wind the spring. The barrel drum rotated by the expansion of the spring will then cause an electric generator to recharge the battery of the device. The unidirectional device for storing mechanical energy may be common to both clutch mounts 14, 15. In this case, the gear train associated with one of the two clutch mounts comprises an additional gear so that the torque that receives the ratchet wheel, whether from the mobile 14 or the mobile 15, is always oriented in the single direction of rotation of said ratchet wheel. In a variant, the unidirectional device for storing mechanical energy may be the driving member of a mechanical watch equipping the apparatus, this motor unit being thus reassembled during the openings and closings of the apparatus.

The present invention has been described above by way of example only. Modifications could be made without departing from the scope of the claimed invention. For example, in use, the peripheral wheel 3 could be the driving wheel and the central wheel 1 the driven wheel. The pawls 4 could be located in cavities of the central wheel 1 rather than in the peripheral wheel 3 and could cooperate with an internal toothing of the peripheral wheel 3. In the embodiment illustrated in the figures, the wheels 1 and 3 are coplanar, that is to say that they are crossed by at least one common geometric plane perpendicular to the axis of the clutch mobile. Although this embodiment is preferred, the present invention does not exclude variants in which the wheels 1 and 3 are not coplanar and where the pawls 4 are carried by the peripheral wheel 3.

Claims (14)

1. Clutch mobile comprising: a first wheel (1), a second wheel (3) coaxial with the first wheel, and at least one pawl (4) connected to the second wheel and cooperating with a toothing (9) of the first wheel to allow one of said wheels to drive the other wheel with it in a first direction of rotation and to rotate in a second direction, opposite to the first direction, without driving the other wheel, characterized in that the or each pawl (4) has a plurality of teeth (5) each cooperating with said toothing.
2. Clutch mobile according to claim 1, characterized in that the or each pawl (4) is arranged so that the ends of its teeth (5). are substantially on the same circle centered on the axis of the clutch mobile when said one of the wheels rotates in the first direction of rotation.
3. clutch mobile according to claim 1 or 2, characterized in that the or each pawl (4) is arranged so that, when said one of the wheels turns in the second direction, only one of the teeth (5) of the pawl is in contact with said toothing (9) during each raising of the pawl by said toothing.
4. clutch mobile according to any one of claims 1 to 3, characterized in that said wheels (1, 3) are coplanar.
5. Clutch mobile according to claim 4, characterized in that the second wheel (3) surrounds the first wheel (1).
6. Clutch mobile according to claim 4 or 5, characterized in that the or each pawl (4) is located in a cavity of the second wheel (3).
7. Clutch mobile according to claim 6, characterized in that the or each pawl (4) is a rigid portion connected to the second wheel (3) by a leaf spring (7).
8. clutch mobile according to claim 7, characterized in that the or each pawl (4) is in one piece with the corresponding leaf spring (7).
9. clutch mobile according to claim 7 or 8, characterized in that the or each leaf spring (7) is swan neck.
10. Clutch mobile according to any one of claims 7 to 9, characterized in that the end of the or each leaf spring (7) other than the end attached to the ratchet (4) corresponding is housed in a notch (8) of the second wheel (3).
11. Clutch mobile according to any one of claims 6 to 10, characterized in that the or each cavity (6) defines a stop (10) against which rests the ratchet (4) corresponding when said one of the wheels turns in the first sense.
12. Mobile clutch according to any one of claims 6 to 11, characterized in that it comprises on at least one of its faces a cover (11) for holding the pawl (s) (4) in the cavity or cavities (6).
13. Mobile clutch according to any one of claims 1 to 12, characterized in that it comprises several said pawls (4).
14. Use of at least one clutch mobile according to any one of claims 1 to 13 in a hinge of a portable electronic device.
CH12582011A 2011-07-28 2011-07-28 Movable clutch. CH705322A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH12582011A CH705322A2 (en) 2011-07-28 2011-07-28 Movable clutch.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH12582011A CH705322A2 (en) 2011-07-28 2011-07-28 Movable clutch.
PCT/IB2012/001421 WO2013014515A1 (en) 2011-07-28 2012-07-24 Clutch runner

Publications (1)

Publication Number Publication Date
CH705322A2 true CH705322A2 (en) 2013-01-31

Family

ID=46651553

Family Applications (1)

Application Number Title Priority Date Filing Date
CH12582011A CH705322A2 (en) 2011-07-28 2011-07-28 Movable clutch.

Country Status (2)

Country Link
CH (1) CH705322A2 (en)
WO (1) WO2013014515A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3489761A1 (en) * 2017-11-24 2019-05-29 Blancpain SA Timepiece mobile with unidirectional wheel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106662838A (en) * 2014-06-19 2017-05-10 劳力士有限公司 Timepiece transmission device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB713202A (en) * 1951-11-28 1954-08-04 Rotherham & Sons Ltd Means for limiting reverse rotation of a rotary member of an instrument
DE1922475U (en) * 1965-01-07 1965-08-26 Fichter K G Fabrik Fuer Feinme Kunststoffgesperr for watches with gehwerk- and alarm clock factory give.
DE1640396B1 (en) * 1967-07-26 1969-11-20 Walter Holzer Long switch with a continuously operate the drive means and a transmission
DE1922435C3 (en) * 1969-05-02 1978-06-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt
GB2399984B (en) 2003-03-24 2005-10-12 Matsushita Electric Ind Co Ltd Augmenting the battery life of a portable electronic device
FR2920628B1 (en) 2007-08-30 2011-07-01 Celsius X Vi Ii Portable phone with a mechanical watch
EP2219279A1 (en) 2009-02-13 2010-08-18 Celsius X Vi Ii Portable electronic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3489761A1 (en) * 2017-11-24 2019-05-29 Blancpain SA Timepiece mobile with unidirectional wheel

Also Published As

Publication number Publication date
WO2013014515A9 (en) 2013-03-28
WO2013014515A1 (en) 2013-01-31

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