WO2010000085A1 - Device for braking and/or mechanical locking - Google Patents

Device for braking and/or mechanical locking Download PDF

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Publication number
WO2010000085A1
WO2010000085A1 PCT/CH2009/000228 CH2009000228W WO2010000085A1 WO 2010000085 A1 WO2010000085 A1 WO 2010000085A1 CH 2009000228 W CH2009000228 W CH 2009000228W WO 2010000085 A1 WO2010000085 A1 WO 2010000085A1
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WO
Grant status
Application
Patent type
Prior art keywords
arranged
notches
housing
central core
characterized
Prior art date
Application number
PCT/CH2009/000228
Other languages
French (fr)
Inventor
Marco Fiocchi
Original Assignee
Flakes S.A.
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

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Classifications

    • 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
    • F16D63/00Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/006Positive locking brakes
    • 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
    • F16D63/00Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/008Brakes acting on a linearly moving member

Abstract

The invention relates to a linear device for braking and/or mechanical locking (10) comprising a housing (11) wherein a cylindrical cavity (12) is provided containing a central core (13; 53) arranged so as to axially slide into the cavity (12). A movable longitudinal element (15), fitted into a space (14) extending across the housing (14), also extends axially across the housing (14). The central core (13) comprises at least one bore (16) arranged so as to receive, respectively, at least one pin (17) biased by at least one thrust spring (18), and the longitudinal element (15) comprises at least one series of notches (40) placed along a straight line (41) parallel to the longitudinal axis of movement of the movable element (15), facing the pin (17). The notches (40) are arranged so as to engage with the pin (17) to ensure a braking and/or locking function for the device, the central core (13) being combined with a means for actuating the axial movement thereof based on the desired braking and/or mechanical locking.

Description

BRAKING DEVICE AND / OR MECHANICAL LOCK

Technical area

The present invention relates to a braking device and / or mechanical locking a moving part.

prior art

For many applications, it is useful to use a device for braking a movement of an elongate, linear movement or rotation, the device being arranged to apply a gradual braking force up to and including complete blockage preventing movement. This type of device usually includes at least one friction means such as for example the jaws equipped with brake pads which enclose with more or less force a bar or axial displacement plate.

One disadvantage of these known systems comes from it just a single drop of lubricant accidentally poured on the brake pads, or a liquid such as water for example, to radically change the braking characteristics of the device or even cancel completely. The dust deposition can have effects similar to those of lubricants. Finally, the complete mechanical blockage can not be guaranteed with this type of device, such that external agents can fundamentally alter the characteristics and effectiveness of the system.

Disclosure of the invention

The present invention proposes to overcome these disadvantages by providing a device which allows to obtain a progressive braking by mechanical means whose characteristics are predetermined manner defined by its construction and independently of any presence of external agents. This device also allows to ensure complete blocking, the blocking force or locking being defined in terms of constructive and dimensional characteristics of the components. This object is achieved by the device according to the invention as defined in the preamble, characterized in that it comprises a housing in which is provided a cylindrical housing containing a central core arranged to slide axially in said housing, said housing being traversed by a movable longitudinal member axially received in a through passage of said housing, said through-passage being substantially perpendicular to said cylindrical housing, said core having at least one arranged bore for receiving at least respectively a pin loaded by at least one thrust spring, and said longitudinal element comprising at least a series of notches arranged opposite said pin and arranged to cooperate with said pin in order to ensure a braking function and / or jamming of the device, said core being associated with means arranged for actuating axial movement depending on the braking e t / or desired mechanical blockage.

According to a preferred embodiment, the device may comprise at least one series of bores arranged to receive respectively at least one series of aligned pins respectively biased by at least one series of compression springs, said at least one set pins being arranged to cooperate respectively with at least a series of notches to provide a braking function and / or blockage of the device.

Advantageously, said at least one series of notches of the movable member can be arranged in at least one circumferential straight line parallel to the longitudinal axis of displacement of said movable member or of at least one circumferential line arranged in a radial plane perpendicular to the longitudinal axis of displacement of said movable member.

In the preferred embodiment, said central core has at least two arranged to each contain respectively a pin, each pin being biased by a thrust spring, said two pins being arranged to cooperate respectively with at least two straight lines slots parallel notches to provide a braking function and / or blockage of the device.

In an alternative embodiment, said central core has at least two bores arranged for containing each respectively a pin, each pin being biased by a thrust spring, said two pins being arranged to cooperate respectively with at least two peripheral lines notches parallel notches to provide a braking function and / or blockage of the device.

According to the embodiment, the longitudinal member may have a circular section and it may comprise a line of notches or several straight lines or circular notches parallel to each other.

When the longitudinal member has a rectangular section, it may have a notch line or several lines of parallel straight notches therebetween.

In all embodiments, said central core is preferably connected to the housing via a coupling part provided with a threaded lower section surmounted by a flange and screwed into a threaded bore of said central core, said workpiece coupling having a cylindrical sector arranged to pass through a central bore of a stop plate closing ιe cylindrical housing of said housing and said cylindrical sector being surmounted by an endpiece intended to connect said coupling piece with a control member.

Brief description of drawings

The present invention and its advantages will be better understood from reading the detailed description of preferred implementations of the device of the invention, with reference to the accompanying drawings indicative and not exhaustive, in which Figure 1 is a view of a first advantageous embodiment of the device according to the invention,

2 shows an exploded perspective view of Pinventicn device of Figure 1,

3A and 3B show sectional views of the device of the invention respectively in two phases of operation,

Figure 4 is an exploded perspective view of a second embodiment of the device according to the invention,

Figures 5A, 5B and 5C are respectively a plan view, in elevation and in cross section of the embodiment of Figure 4,

Figure 6 is an exploded perspective view of a third embodiment of the device according to the invention,

7A and 7B are views respectively in axial section and cross-section of the device of Figure 6, and

8A and 8B show an application of the device of the invention as cable tensioner or the like.

Best ways of implementing the invention

With reference to the figures and in particular to Figures 1, 2, 3A and 3B one device 10 of the invention comprises a housing 11 in which is formed a substantially cylindrical housing 12 containing a central core 13 designed to slide axially in said cylindrical housing 12 according to the double arrow A. the housing 11 further comprises a through passage 14 whose axis is substantially perpendicular to the axis of the cylindrical housing 12. the through passage 14 is arranged to hold an elongate member 15 axially slidable in within said passage 14. In the example shown, the through passage 14 and the elongate member 15 have a circular section. This construction is optional and the section could be square, rectangular, hexagonal etc. In the example shown in Figures 4 and 5, the elongate member has the shape of a flat piece of rectangular section.

Said central core assembly 13 comprises, in the example illustrated, a row of two holes 16 arranged along an axis parallel to the axis of displacement of the elongated element 15 and arranged to respectively receive a pin 17 biased by a biasing spring 18 maintained in the corresponding bore 16 by a tubular part 19, also engaged in said bore 16. the central core 13 is engaged in Ie cylindrical housing 12 and covered by a stop plate 20 fixed to said housing 11 by two screws 21. the central core 13 is further provided with a threaded bore 22 into which is screwed a coupling piece part 23 including a threaded lower section 24 surmounted by a flange 25 defining a stop bearing against the upper surface of said central core 13. in its upper part, the coupling piece 23 comprises a cylindrical sector 26 arranged to engage in a central bore 27 of the stopper plate 20, said cylindrical sector 26 being surmounted by a cap 28 for securing the coupling part 23 and a controller 29, for example a lever, whose function will be described later. A pin (not shown) is engaged in an opening 30 of the joystick 29 and into a corresponding opening 31 of nozzle 28 for securing the said control lever 29 and said coupling 23.

Said longitudinal element 15 comprises, in the example shown, a series of notches 40 disposed along a straight circumferential line 41 parallel to the longitudinal axis of displacement of said movable member and facing the pins 17. These notches 40 have a central area 41 whose depth is maximum and two side zones 42 and 43 slope descending in the central zone 41. They are arranged to cooperate with the pins 17 in order to perform a function of braking and / or locking of the device depending on the position said central core 13 within the cylindrical housing 12.

3A and 3B show sectional views of the device 10 in various stages during its use. The resting phase, corresponding to the free movement of the elongate member 15 into the through passage 14 of the housing 11 is shown in FIG 3A. The central core 13 is held in its high position within the cylindrical housing 12. Thus, the pins 17 are fully disengaged from the slots 40 and no braking or blocking can be done by engaging the pins in the slots. The movement of the elongate member 15 is entirely free.

3B illustrates a braking phase and / or block in which the central core 13 is disposed at a sufficient distance from the stop plate 20 so that pins 17 of the heads are engaged in the notches 40. The thrust springs 18 exert a greater or lesser force on the pins 17 to ensure a more or less strong braking when the elongate member 15 is driven in translation relative to the housing 11. This braking is due to the friction of the pins 17 on the heads bottom of the notches 40. The double ramp 41, 42 of these notches 40 is an entrance ramp and an exit ramp of the corresponding pins 17. The braking force depends on the force exerted by the biasing springs 18, so the distance between the central core 13 of the stop plate 20.

The number of rows of slots 41 can be varied and the number of pins 17 that are working on a same line of notches according to the results that one wishes to achieve.

Figures 4, 5A, 5B and 5C illustrate a second embodiment wherein the elongate element has the shape of a flat bar of rectangular cross section and includes two notches lines. As shown particularly in the exploded perspective view of Figure 4, the device 50 of the invention comprises a housing 51 in which is formed a cylindrical housing 52 containing a central core 53 designed to slide axially in said housing 52 according to the double arrow B. the housing 51 has a through passage 54 whose axis is substantially perpendicular to the axis of the cylindrical housing 52. the through passage 54 is arranged to hold an elongate member 55 axially slidable within said passage 54 . In the example shown, the through passage 54 and the elongate member 55 have a rectangular section.

Said central core 53 comprises, in the illustrated example, two bores 56 arranged to respectively receive a pin 57 biased by a spring 58 maintained thrust in the corresponding bore 56 by a tubular part 59 also engaged in said bore 56. The core central 53 is engaged in the cylindrical housing 52 and covered by a stop plate 60 fixed to said housing 51 by two screws 61. the central core 53 is provided with a threaded bore 62 into which is screwed a coupling piece part 63 including a threaded lower section 64 surmounted by a flange 65 defining a stop bearing against the upper surface of said central spike 53. in its upper part, the coupling piece 63 comprises a cylindrical sector 66 arranged to pass through a central bore 67 of the stop plate 60, said cylindrical sector 66 being surmounted by a cap 68 for securing the coupling part 63 and a body of e control 69, for example a lever, whose function will be described later. A pin (not shown) is engaged in an opening 70 of the control handle 69 and into a corresponding opening 71 of the end piece 68 for securing said control handle 69 and said coupling 63.

Said longitudinal element 55 comprises, in the example shown, two rows of slots 41 arranged respectively opposite the two pins 57, the notches 40 having the same geometry as the slots 40 described above. These notches are arranged to cooperate with the pins 57 in order to perform a function of braking and / or locking of the device depending on the position of said central core 53 within the cylindrical housing 52. The number of pins working with respectively the notches 40 of each line may be increased according to the braking power or desired blocking. The number of lines of notches may be greater than two. As shown more particularly in Figure 5C, the housing 51 has an upper section smaller than the section in the lower part. However this geometry could be changed and the housing 51 may have an invariable rectangular secticn full height.

Figures 6, 7A and 7B show a third embodiment of the device 80 which differs from that of Figures 1, 2, 3A and 3B in that the notches line 40 cooperating with the pins to provide the brake function and blocking, is a circular peripheral line 81 disposed in a radial plane perpendicular to the longitudinal axis of displacement of the movable member 15. the other components of device 80 are identical to the corresponding components of device 10 described with reference to the mentioned figures and have the same reference numbers.

Note that the elongate member 15 carries two rows of slots 81, parallel to each other and disposed in two radial planes which correspond to the two pins 17 as shown in FIG 7A. In this case, the purpose of the device 80 is to provide a braking rotation of the elongate member relative to the housing 11 as shown in FIG 7B. One application is for example a valve control system in which the rotational movement of an axis must be done gradually and controlled in each position. The number of rows of slots 81 is not limited. It depends on the number of pins 17 mounted in the central core 13.

8A and 8B show a specific embodiment of the device 100 used in the context of a halyard or cable tensioner. In this embodiment, the device comprises a housing 101, similar to the housings 11 and 51 described above, but further provided with two lateral extensions 102 arranged to be pivotally attached to a base 103, for example screwed on Ie deck of a ship, when the device is designed as a tensioning a tether of a mast or the like. The housing 101 is provided with a through-passage of circular section arranged to receive a cylindrical elongate member 15.

The elongate member 15, which slides in the housing 101, has a straight circumferential line 41 of slots 40 arranged to cooperate, as described with reference to the preceding figures, with pins 17 housed in the housing 101. This element 15 comprises at its free end a threaded sector 104 for its coupling with a mechanical part, for example a workpiece (not shown) which secures a cable or hooking eyelet of a rope or a rod or the like. When this device is used for securing a tether of a ship's mast, for example, in case of excessive pressure, that is to say when, following extreme sea conditions the voltage on cable Ie exceeds a certain threshold, the device, previously adjusted to a predetermined value, freeing a certain tension and avoid wire break causing an accident. The same case can occur on a metal structure, such as a crane, which amounts are secured by cables. Freeing some tension when it reaches a critical threshold avoids accidents due to breaks in cables or connecting rods or the like. Other applications are possible. The adjustment of the tension release threshold is adjustable in each case and according to specific needs.

Claims

1. linear braking device and / or mechanical lock (10; 50; 100) of a moving part, characterized in that it comprises a housing (11; 51; 101) in which is provided a cylindrical housing ( 12; 52) containing a central core (13; 53) arranged to slide axially in said housing, said housing being traversed by a longitudinal member (15; 55) axially movable housed in a through passage (14; 54) of said housing, said through-passage being substantially perpendicular to said cylindrical housing (12; 52), said central core (13; 53) having at least one bore (16; 56) arranged to receive at least one pin, respectively (17; 57) biased by at least a thrust spring (18; 58) and said longitudinal element comprising at least one series of notches (40) disposed opposite said pin (17; 57) and arranged to cooperate with said pin in order to ensure a function of braking and / or blocking of the dispo operative part, said central core (13; 53) being associated with means arranged to actuate its axial movement as a function of braking and / or desired mechanical locking.
2. Device according to Claim 1, characterized in that said central core (11, 51) comprises at least one series of holes (16, 56) arranged to receive respectively at least one series of aligned pins (17, 57) biased respectively by at least one series of compression springs (18, 58), said at least one set pins being arranged to cooperate respectively with at least a series of notches (40) to perform a function of braking and / or blocking of device (50).
3. Device according to claims 1 and 2, characterized in that said at least one series of notches (40) of the movable member (15, 55) .is disposed in at least one peripheral line (41) parallel to the longitudinal displacement axis of said movable member.
4. Device according to Claims 1 and 2, characterized in that said at least one series of notches (40) of the movable member (15; 55) is arranged in at least one circumferential line (81) disposed in a plane radial perpendicular to the longitudinal axis of displacement of said movable member.
5. Device according to claims 1 and 3, characterized in that said central core (51) has at least two bores (56) arranged for containing each respectively a pin (57), each pin (57) being biased by a spring thrust (58), said two pins being arranged to cooperate respectively with the notches (40) of at least two parallel straight lines (41) of notches to provide a braking function and / or locking device (50).
6. Device according to claims 1 and 4, characterized in that said central core (51) has at least two bores (56) arranged for containing each respectively a pin (57), each pin (57) being biased by a spring thrust (58), said two pins being arranged to cooperate respectively with the notches (40) of at least two parallel peripheral lines (81) of notches to provide a braking function and / or locking device (50).
7. Device according to Claims 3 and 4, characterized in that said longitudinal member (55) has a circular section and in that it comprises a line (41, 81) of notches (40).
8. Device according to claim 3, characterized in that said longitudinal member (55) has a rectangular section and in that it comprises a line (41) of notches (40).
9. Device according to Claims 3 and 4, characterized in that said longitudinal member (55) has a circular section and in that it comprises several rows (41; 81) of notches (40) parallel to each other.
10. Device according to claim 3, characterized in that said longitudinal member (55) has a rectangular section and in that it comprises several rows (41) of notches (40) parallel to each other.
11. Device according to claim 1, characterized in that said central core (13, 53) is connected to the housing (11, 51) via a coupling piece ae (23, 63) provided with a lower sector threaded (24, 64) surmounted by a collar (25, 65) and screwed into a threaded bore (22, 62) of said central core (13, 53), said coupling part (23, 63) having a cylindrical sector ( 26, 66) arranged to pass through a central bore (27, 67) a stop plate (20, 60) closing the cylindrical housing (12, 52) of said housing (11, 51), said cylindrical sector (26, 66) being surmounted by an endpiece (28, 68) for securing the said coupling piece (23, 63) with a control member (29, 69).
PCT/CH2009/000228 2008-07-02 2009-07-01 Device for braking and/or mechanical locking WO2010000085A1 (en)

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CH10262008 2008-07-02
CH1026/08 2008-07-02

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US8540632B2 (en) 2007-05-24 2013-09-24 Proteus Digital Health, Inc. Low profile antenna for in body device
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US8583227B2 (en) 2008-12-11 2013-11-12 Proteus Digital Health, Inc. Evaluation of gastrointestinal function using portable electroviscerography systems and methods of using the same
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