WO2001052013A1 - Dispositif de blocage/deblocage du mouvement d'un organe crante - Google Patents
Dispositif de blocage/deblocage du mouvement d'un organe crante Download PDFInfo
- Publication number
- WO2001052013A1 WO2001052013A1 PCT/FR2001/000082 FR0100082W WO0152013A1 WO 2001052013 A1 WO2001052013 A1 WO 2001052013A1 FR 0100082 W FR0100082 W FR 0100082W WO 0152013 A1 WO0152013 A1 WO 0152013A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- notched
- teeth
- support shaft
- fixed support
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
- B25B25/005—Implements for fastening, connecting or tensioning of wire or strip for applying wire clasps to hose couplings
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- G05G5/12—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant
- G05G5/26—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant by other means than a quadrant, rod, or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20636—Detents
- Y10T74/20648—Interrelated lever release
Definitions
- the present invention relates to a device for blocking / unblocking the movement of a movable notched member such as a notched bar movable in translation or a pinion movable in rotation. It is known to carry out the control of blocking and unblocking of a rack or a pinion by means of a pawl which is constituted by an articulated lever biased by a spring and which carries, at its end, a hook s' engaging in the hollows between the teeth of a rack or pinion.
- a blocking / unblocking device has the drawback of requiring the use of a pawl return spring, a spring which is often a cause of failure due to breakage or corrosion.
- the present invention essentially aims to remedy this drawback by providing a locking / unlocking device free of return spring and of a particularly simple design.
- this device for blocking / unblocking the movement of a movable notched member in particular of a notched bar movable in translation or of a pinion movable in rotation, is remarkable in that it comprises a toothed wheel in engagement , in a contact area, with the notches of the movable member, having a coaxial bore and whose teeth have a pitch equal to that of the teeth of the movable member, and a fixed support shaft around which the toothed wheel is mounted in rotation, this fixed support shaft having an outside diameter smaller than the inside diameter of the wheel bore so that, as a result of the radial clearance thus formed, the wheel can move radially between a substantially centered release position in which the tops of the teeth of the notched mobile member which are closest to the wheel, are situated outside the pitch circle of the teeth of the wheel and the notched mobile member can then move freely, and an eccentric locking position, when the notched movable member exerts, on the toothed wheel, a force directed towards the axis of the
- FIG. 1 is a cross-sectional view of a locking / unlocking device according to the invention, in the eccentric locking position.
- FIG. 2 is a cross-sectional view of the device shown in Figure 1, in the centered locking position.
- FIG. 3 is a sectional view of a tool for fitting a band collar in which the locking / unlocking device according to the invention is used.
- - Figure 4 is a sectional view, on a larger scale, taken along the line IV-IV of Figure 3.
- the locking / unlocking device which is shown in Figures 1 and 2 is associated with a notched bar 1 capable of being moved in translation in the direction of arrow A ( Figure 2).
- This bar has, on its upper face, a regular alternation of teeth separated by notches lb.
- the locking / unlocking device comprises a toothed wheel 2 located above the notched bar 1 and coplanar therewith, of axis 0 perpendicular to the direction of movement A of the toothed bar 1.
- the wheel 2 has a toothed crown 3 having, at its periphery, a regular alternation of teeth 3a separated by recesses 3b.
- the pitch of the teeth 3a of the toothed crown 3 is equal to the pitch of the teeth la of the toothed bar 1 and the teeth 3a of the toothed crown 3 are engaged, in the lower part of the crown 3, with the teeth of the bar notched 1 as it appears on figures 1 and 2.
- the crown toothed 3 has a coaxial bore 3c which is crossed by a fixed support shaft 4 of axis 0 1 parallel to the axis O, that is to say perpendicular to the direction of movement A of the notched bar 1.
- the shaft fixed support 4 has a diameter smaller than that of the bore 3c of the toothed wheel 3 so that there is a radial clearance 5 between the internal surface of the bore 3c and the external surface of the fixed support shaft 4, this play can be left free or filled with an element of elastic material as will be specified below. Therefore, the ring gear 3 can move transversely relative to one fixed central support shaft 4, over a short distance. Also shown in phantom in Figures 1 and 2, the circle of pitch diameter of the teeth 3a of the ring gear 3. We will now explain the operation of the locking / unlocking device shown in Figures 1 and 2. On the FIG. 1, the device is in the blocking position in which the ring gear 3 is eccentric with respect to the fixed support shaft 4.
- the notched bar 1 has been subjected to a force F directed upwards c ' that is to say towards the axis O x of the support shaft 4, so that this notched bar 1 has been moved to the high position and that it exerts pressure on the ring gear 3.
- the ring gear 3 is pushed upwards and the internal surface of its bore 3c is applied against the lower generatrix of the fixed support shaft 4 to which it is tangent.
- the axis O of the toothed wheel 2 is at a small distance above the axis Oi of the fixed support shaft 4.
- the notched bar 1 presenting the teeth 1a on its upper face, the toothed wheel 2 being able to rotate around the fixed support shaft 4 and a trigger 8 allowing to act on the notched bar 1 for the release er of the toothed wheel 2, placing it in the low position shown in Figure 2, and allow the sliding of this bar 1.
- the toothed crown 3 of the wheel 2 can be mounted on two annular metal cheeks whose bore diameter is such that it allows sufficient compression of the elastic ring 10 to obtain the mutual blocking of the toothed wheel 2 and the notched movable member 1, while limiting the crushing of the elastic ring as a result of their coming into contact with the fixed support shaft 4.
- the locking / unlocking device could also be used with a pinion instead of the notched bar 1, this pinion being in engagement with the toothed wheel 2 and which can be moved, under the effect of the force F, towards the axis Oi of the support shaft 4.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Gears, Cams (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/169,913 US6739435B2 (en) | 2000-01-11 | 2001-01-11 | Device for locking/unlocking the movement of a notched member |
| AU2001231877A AU2001231877A1 (en) | 2000-01-11 | 2001-01-11 | Device for locking/unlocking the movement of a notched member |
| EP01903919A EP1248969A1 (fr) | 2000-01-11 | 2001-01-11 | Dispositif de blocage/deblocage du mouvement d'un organe crante |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0000911A FR2803635B1 (fr) | 2000-01-11 | 2000-01-11 | Dispositif de blocage/deblocage du mouvement d'un organe crante, une barre mobile en translation ou un pignon mobile en rotation |
| FR00/00911 | 2000-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001052013A1 true WO2001052013A1 (fr) | 2001-07-19 |
Family
ID=8846273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2001/000082 Ceased WO2001052013A1 (fr) | 2000-01-11 | 2001-01-11 | Dispositif de blocage/deblocage du mouvement d'un organe crante |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6739435B2 (fr) |
| EP (1) | EP1248969A1 (fr) |
| AU (1) | AU2001231877A1 (fr) |
| FR (1) | FR2803635B1 (fr) |
| WO (1) | WO2001052013A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0771971A1 (fr) * | 1995-10-30 | 1997-05-07 | Illinois Tool Works Inc. | Amortisseur pivotant à engrenage |
| DE29714265U1 (de) * | 1997-08-09 | 1997-10-23 | Westfalia-Werke Knöbel GmbH & Co., 33378 Rheda-Wiedenbrück | Vorrichtung zur positionsbestimmten Drehverriegelung eines Ritzel-Zahnstangengetriebes |
| EP0994281A2 (fr) * | 1998-10-14 | 2000-04-19 | Lego A/S | Engrenage à pignon et crémaillère avec butée terminale et protection contre les surcharges |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1798808A (en) * | 1928-09-26 | 1931-03-31 | Wallace E Potter | Braking attachment |
| GB730824A (en) * | 1953-03-24 | 1955-06-01 | Stuart Davis Ltd | Reciprocatory drive for a rack |
| DE2356209C3 (de) * | 1973-11-10 | 1978-09-07 | Artur Dr. 7244 Waldachtal Fischer | Zahnradgetriebe für Spielzeuge |
| JPS6181244A (ja) * | 1984-09-27 | 1986-04-24 | Kojima Press Co Ltd | 車両用収納体装置における自動突出し装置 |
| US5984334A (en) * | 1997-09-29 | 1999-11-16 | Dugas; Grady A. | Automatic braking wheelchair |
-
2000
- 2000-01-11 FR FR0000911A patent/FR2803635B1/fr not_active Expired - Fee Related
-
2001
- 2001-01-11 AU AU2001231877A patent/AU2001231877A1/en not_active Abandoned
- 2001-01-11 EP EP01903919A patent/EP1248969A1/fr not_active Withdrawn
- 2001-01-11 US US10/169,913 patent/US6739435B2/en not_active Expired - Fee Related
- 2001-01-11 WO PCT/FR2001/000082 patent/WO2001052013A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0771971A1 (fr) * | 1995-10-30 | 1997-05-07 | Illinois Tool Works Inc. | Amortisseur pivotant à engrenage |
| DE29714265U1 (de) * | 1997-08-09 | 1997-10-23 | Westfalia-Werke Knöbel GmbH & Co., 33378 Rheda-Wiedenbrück | Vorrichtung zur positionsbestimmten Drehverriegelung eines Ritzel-Zahnstangengetriebes |
| EP0994281A2 (fr) * | 1998-10-14 | 2000-04-19 | Lego A/S | Engrenage à pignon et crémaillère avec butée terminale et protection contre les surcharges |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2803635A1 (fr) | 2001-07-13 |
| FR2803635B1 (fr) | 2002-04-05 |
| US20030121344A1 (en) | 2003-07-03 |
| AU2001231877A1 (en) | 2001-07-24 |
| EP1248969A1 (fr) | 2002-10-16 |
| US6739435B2 (en) | 2004-05-25 |
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