FR2614077A1 - Improvements to the mounting of an articulation pin - Google Patents
Improvements to the mounting of an articulation pin Download PDFInfo
- Publication number
- FR2614077A1 FR2614077A1 FR8705511A FR8705511A FR2614077A1 FR 2614077 A1 FR2614077 A1 FR 2614077A1 FR 8705511 A FR8705511 A FR 8705511A FR 8705511 A FR8705511 A FR 8705511A FR 2614077 A1 FR2614077 A1 FR 2614077A1
- Authority
- FR
- France
- Prior art keywords
- mounting
- arms
- elastic means
- pin
- axis
- 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.)
- Pending
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
- F16C11/103—Arrangements for locking frictionally clamped
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
La présente invention concerne un dispositif de montage tournant sur un axe d'articulation de longueur fixe, déterminée au montage, de deux bras, dont l'un est maintenu immobile et dont la position angulaire de l'autre est modifiable sous l'action d'un couple déterminé.The present invention relates to a mounting device rotating on a hinge pin of fixed length, determined during mounting, of two arms, one of which is held stationary and whose angular position of the other is modifiable under the action of 'a determined couple.
Dans ces articulations, le couple de manoeuvre est déterminé par des bagues de frottement interposées entre des surfaces correspondantes des deux bras et ce couple varie au fur et à mesure de l'usure des surfaces en frottement, résultant de la multiplication des cycles de pivotement des bras.In these articulations, the operating torque is determined by friction rings interposed between corresponding surfaces of the two arms and this torque varies as the friction surfaces wear, resulting from the multiplication of the pivot cycles of the arms.
L'invention a pour but de rendre ce couple sensiblement constant apyres un certain nombre de ces cycles et elle prévoit à cet effet de disposer sur cet axe de liaison de longueur fixe un moyen élastique permettant de compenser cette variation du couple, due à l'usure des pièces en frottement, par ses propres caractéristiques sensiblement constantes dans la plage d'usure existante.The object of the invention is to make this torque substantially constant after a certain number of these cycles and it provides for this purpose to have on this connecting axis of fixed length an elastic means making it possible to compensate for this variation in torque, due to the wear of parts in friction, by its own characteristics substantially constant in the existing range of wear.
Ce moyen élastique peut être, par exemple, des rondelles type Belleville, de structure adaptée à la courbe de couple recherchée.This elastic means can be, for example, Belleville type washers, of structure adapted to the desired torque curve.
Ce moyen peut être placé en un point quelconque de l'axe d'articulation dont la longueur est limitée par des pièces de rivetage. I1 vise essentiellement à rappeler le bras mobile vers une partie fixe de l'ensemble de montage.This means can be placed at any point on the hinge axis whose length is limited by riveting pieces. I1 essentially aims to recall the movable arm towards a fixed part of the mounting assembly.
A titre nullement limitatif, on a représenté au dessin annexé deux exemples de réalisation de montages d'axe d'articulation selon l'invention, appliqués en particulier à des supports d'appui-tête de voitures. Sur ce dessin, - la figure 1 est une vue schématique partielle en demi
coupe axiale d'un premier exemple de réalisation, et - la figure 2 est une vue similaire à la figure 1 d'un se
cond exemple de réalisation.By way of non-limiting example, there is shown in the appended drawing two exemplary embodiments of hinge pin assemblies according to the invention, applied in particular to car headrest supports. In this drawing, - Figure 1 is a partial schematic view in half
axial section of a first embodiment, and - Figure 2 is a view similar to Figure 1 of a
cond example of realization.
Dans l'exemple de la figure 1 les deux bras 1, 2 sont montés tournants autour de l'axe 4 constitué par un rivet 4, mais l'un des deux, par exemple, le bras 2 est immobilisé.In the example of FIG. 1, the two arms 1, 2 are mounted to rotate about the axis 4 constituted by a rivet 4, but one of the two, for example, the arm 2 is immobilized.
Des rondelles de frottement 3, 3' sont placées sur l'axe 4 de part et d'autre du bras 1, et une rondelle de frottement 5 est placée contre le bras 2 face à la rondelle 3.Friction washers 3, 3 ′ are placed on the axis 4 on either side of the arm 1, and a friction washer 5 is placed against the arm 2 facing the washer 3.
Comme le prévoit l'invention, un ressort à lame 6 est interposé entre les deux rondelles de frottement 3 et 5.As provided by the invention, a leaf spring 6 is interposed between the two friction washers 3 and 5.
Dans l'exemple de la figure 2, une rondelle de friction 18 est placée entre les deux bras 1 et 2 avec interposition de deux rondelles 17, 19 indexées, et deux rondelles de frottement 14, 15 accolées sont placées entre le bras 1 et un épaulement de l'axe 4. Deux rondelles Belleville 13 en opposition sont placées entre la rondelle de frottement 14 et la tête d'axe 4 avec interposition d'une rondelle indexée 12.In the example of FIG. 2, a friction washer 18 is placed between the two arms 1 and 2 with the interposition of two indexed washers 17, 19, and two friction washers 14, 15 joined together are placed between the arm 1 and a shoulder of the axis 4. Two Belleville washers 13 in opposition are placed between the friction washer 14 and the axis head 4 with the interposition of an indexed washer 12.
Le coefficient de frottement de la rondelle 14 sur l'axe et celui de la rondelle 15 sur l'arbre 1 doivent être supérieurs au coefficient de frottement de la rondelle 18 sur les rondelles indexées 17 et 19. The coefficient of friction of the washer 14 on the shaft and that of the washer 15 on the shaft 1 must be greater than the coefficient of friction of the washer 18 on the indexed washers 17 and 19.
En admettant un couple de manoeuvre du bras 1 de 0,7 mt daN on peut, par exemple, parvenir à une perte maximum de 0,03 mndaN après 10 000 cycles, à raison de 10 à 15 cycles de pivotement par minute.By admitting an operating torque of the arm 1 of 0.7 mt daN it is possible, for example, to achieve a maximum loss of 0.03 mndaN after 10,000 cycles, at the rate of 10 to 15 pivoting cycles per minute.
On a représenté, dans ces deux exemples, les pièces de frottement sous forme de simples rondelles. Elles peuvent, bien entendu, prendre des formes très variées. On peut notamment, dans un but de simplification, grouper les rondelles 14, 15 et 18 sous forme d'une bague creuse montée tournante sur l'axe 4 et qui est traversée par le bras 1.These two examples show the friction parts in the form of simple washers. They can, of course, take a wide variety of forms. One can in particular, for the sake of simplification, group the washers 14, 15 and 18 in the form of a hollow ring rotatably mounted on the axis 4 and which is crossed by the arm 1.
Ce sont les faces d'extrémité de cette bague qui jouent le rôle de bagues de frottement. These are the end faces of this ring which play the role of friction rings.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8705511A FR2614077A1 (en) | 1987-04-17 | 1987-04-17 | Improvements to the mounting of an articulation pin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8705511A FR2614077A1 (en) | 1987-04-17 | 1987-04-17 | Improvements to the mounting of an articulation pin |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2614077A1 true FR2614077A1 (en) | 1988-10-21 |
Family
ID=9350256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8705511A Pending FR2614077A1 (en) | 1987-04-17 | 1987-04-17 | Improvements to the mounting of an articulation pin |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2614077A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404166A2 (en) * | 1989-06-23 | 1990-12-27 | Kabushiki Kaisha Toshiba | Hinge device having mechanism for stopping movable member at open position |
BE1015367A3 (en) * | 2003-02-17 | 2005-02-01 | Brutsaert Trading Bv Met Beper | Clamping device for umbrella arm, comprises spindle with hand grip extending through arm and tabs on either side of arm |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB553022A (en) * | 1941-07-30 | 1943-05-05 | Francis Walter Norman Duffield | Improvements in, or relating to, clevis joints |
BE730643A (en) * | 1969-03-28 | 1969-09-01 | ||
FR2037796A5 (en) * | 1969-03-13 | 1970-12-31 | Fichtel & Sachs Ag | |
FR2044354A6 (en) * | 1969-05-19 | 1971-02-19 | Ferodo Sa | |
FR2097289A5 (en) * | 1970-07-01 | 1972-03-03 | Ferodo Sa | |
FR2222894A5 (en) * | 1973-03-21 | 1974-10-18 | Bosch Gmbh Robert | |
FR2386386A1 (en) * | 1977-04-08 | 1978-11-03 | Million J | Machine tool monitoring instrument support - has compass arm cantilevering from pin joint on bracket and with terminal pin joint to instrument table |
FR2457996A1 (en) * | 1979-06-01 | 1980-12-26 | Pizon Ernest | Car aerial mounting stirrup - is pivoted to base flange by bolt which is constrained to pivot with stirrup to prevent loosening of bolt |
FR2467730A3 (en) * | 1979-10-23 | 1981-04-30 | Bruzolo Snc Manifatt | Alterable mounting for car seat head restraint - has vertical and inclination control for the restraint |
GB2076495A (en) * | 1980-05-27 | 1981-12-02 | Patel Vallabhbai Bhudi | Clevis joint |
FR2544264A1 (en) * | 1983-04-15 | 1984-10-19 | Faure Bertrand | Improvements to adjustable headrests equipping the seat backs of vehicle seats |
-
1987
- 1987-04-17 FR FR8705511A patent/FR2614077A1/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB553022A (en) * | 1941-07-30 | 1943-05-05 | Francis Walter Norman Duffield | Improvements in, or relating to, clevis joints |
FR2037796A5 (en) * | 1969-03-13 | 1970-12-31 | Fichtel & Sachs Ag | |
BE730643A (en) * | 1969-03-28 | 1969-09-01 | ||
FR2044354A6 (en) * | 1969-05-19 | 1971-02-19 | Ferodo Sa | |
FR2097289A5 (en) * | 1970-07-01 | 1972-03-03 | Ferodo Sa | |
FR2222894A5 (en) * | 1973-03-21 | 1974-10-18 | Bosch Gmbh Robert | |
FR2386386A1 (en) * | 1977-04-08 | 1978-11-03 | Million J | Machine tool monitoring instrument support - has compass arm cantilevering from pin joint on bracket and with terminal pin joint to instrument table |
FR2457996A1 (en) * | 1979-06-01 | 1980-12-26 | Pizon Ernest | Car aerial mounting stirrup - is pivoted to base flange by bolt which is constrained to pivot with stirrup to prevent loosening of bolt |
FR2467730A3 (en) * | 1979-10-23 | 1981-04-30 | Bruzolo Snc Manifatt | Alterable mounting for car seat head restraint - has vertical and inclination control for the restraint |
GB2076495A (en) * | 1980-05-27 | 1981-12-02 | Patel Vallabhbai Bhudi | Clevis joint |
FR2544264A1 (en) * | 1983-04-15 | 1984-10-19 | Faure Bertrand | Improvements to adjustable headrests equipping the seat backs of vehicle seats |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404166A2 (en) * | 1989-06-23 | 1990-12-27 | Kabushiki Kaisha Toshiba | Hinge device having mechanism for stopping movable member at open position |
EP0404166A3 (en) * | 1989-06-23 | 1991-12-11 | Kabushiki Kaisha Toshiba | Hinge device having mechanism for stopping movable member at open position |
US5473794A (en) * | 1989-06-23 | 1995-12-12 | Kabushiki Kaisha Toshiba | Portable apparatus including a hinge having a ring-shaped spring for generating friction |
BE1015367A3 (en) * | 2003-02-17 | 2005-02-01 | Brutsaert Trading Bv Met Beper | Clamping device for umbrella arm, comprises spindle with hand grip extending through arm and tabs on either side of arm |
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