EP1887174A1 - Doorstop device for vehicles - Google Patents

Doorstop device for vehicles Download PDF

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Publication number
EP1887174A1
EP1887174A1 EP06425584A EP06425584A EP1887174A1 EP 1887174 A1 EP1887174 A1 EP 1887174A1 EP 06425584 A EP06425584 A EP 06425584A EP 06425584 A EP06425584 A EP 06425584A EP 1887174 A1 EP1887174 A1 EP 1887174A1
Authority
EP
European Patent Office
Prior art keywords
roller
door
plastic material
tie rod
stop device
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.)
Withdrawn
Application number
EP06425584A
Other languages
German (de)
French (fr)
Inventor
Vittorio c/o Gammastamp S.p.A. Audisio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gammastamp SpA
Original Assignee
Gammastamp SpA
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 Gammastamp SpA filed Critical Gammastamp SpA
Priority to EP06425584A priority Critical patent/EP1887174A1/en
Publication of EP1887174A1 publication Critical patent/EP1887174A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/12—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod
    • E05C17/20—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod sliding through a guide
    • E05C17/203—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod sliding through a guide concealed, e.g. for vehicles

Definitions

  • the present invention relates to a door-stop device for vehicles according to the preamble of claim 1.
  • a door-stop device of this kind is known from the documents EP-A- 1 319 783 and EP-A-1 564 355 by the same Applicant.
  • a tie rod articulated to the vehicle body slides between a pair of rollers borne by a base structure fastened to the door.
  • the two rollers are pressed elastically against opposite rolling surfaces of the tie rod.
  • a first roller is mounted rotatable, with the interposition of a bushing, on a pivot pin that is fixed relative to the stamped plate base structure.
  • the second roller is mounted rotatable on the end of a bent bar of metallic material forming the elastic element that produces the force that thrusts the two rollers toward each other.
  • the second roller is mounted on a coating of plastic material co-molded on the end of the elastic element.
  • the main drawback of this solution is that the roller mounted on the plastic coating co-moulded on the end of the elastic element can sometimes stick on the coating, causing the seizing of the roller.
  • the second roller comprises an inner rolling element made of plastic material, mounted freely rotatable on an end of the elastic element that lacks plastic coating and the outer rolling element is made of metallic material.
  • the object of the present invention is to provide an improved door-stop device that allows to overcome the drawbacks of prior art solutions.
  • a further object of the present invention is to provide a door-stop device that avoids problems of noisiness.
  • the reference number 10 designates a door-stop device for vehicles according to the present invention.
  • the door-stop device 10 comprises a base structure 12 made of stamped plate and having two parallel sides 14, 16 joined together by a lateral wall 18.
  • the parallel walls 14, 16 have respective portions bent at 90° forming fins 20, 22 provided with holes for fastening the base structure 12 to the door of a vehicle (not shown).
  • the device 10 comprises a metallic front plate 23 fastened on the front side of the fins 20, 22, e.g. by means of folding teeth 25.
  • Two rollers 26, 28 with mutually parallel axes are positioned in the space between the two parallel walls 14, 16.
  • the two rollers 26, 28 are idle relative to the respective axes and are thrust elastically towards each other in the way that shall be described below.
  • a tie rod 30 is positioned between the two parallel walls 14, 16 of the base structure 12 and it is capable of sliding in the direction of its own longitudinal axis between the two rollers 26, 28.
  • the tie rod 30 is constituted by a metallic core 32 provided with a coating of plastic material 34 co-moulded on the metallic core 32.
  • the coating 34 of the tie rod 30 is preferably based on an acetalic resin.
  • the coating made of plastic material 34 has two mutually opposite rolling surfaces 36, 38 against which the two rollers 26, 28 are pressed in rolling contact.
  • a first end of the tie rod 30 is articulated to a bracket 40 to be fastened to an upright of the vehicle (not shown).
  • the opposite end of the tie rod 30 is shaped as a hook to form a stop against the first roller 26.
  • At least one of the rolling surfaces 36, 38 has one or more positioning notches able to define one or more stable retaining positions of the tie rod 30 relative to the base structure 12. Said stable retaining positions correspond to as many positions of partially open door. A position with the door fully open is defined by the contact position between the hook-shaped end of the tie-rod 30 against the roller 26.
  • the first roller 26 comprises a tubular body 42 made of metallic material, having a hole 44 into which are inserted two bushings 46 each of which has a length that is less than half the height of the tubular body 42.
  • the bushings 46 are preferably made of acetalic resin-based plastic material.
  • Each of the two bushings 46 has a collar 48 that bears on the corresponding front edge 50 of the tubular body 42.
  • a pivot pin 52 extends through the aligned holes of the bushings 46. The pivot pin 52 is fixed relative to the parallel walls 14, 15 of the base structure 12.
  • a first end of the pivot pin 52 has a broadened head 54 which engages a hole of the wall 14 with the interposition of a bushing 56.
  • a second end 58 of the pivot pin 52 extends through a hole of the wall 16 and it is riveted against the wall 16.
  • the bushings 46 engage the hole 44 in the tubular element 42 with slight interference while the pivot pin 52 engages the holes of the bushings 46 with play, in such a way that the roller 26 is free to rotate around the axis of the pivot pin 52.
  • the door-stop device 10 comprises an elastic element 60 formed by a metal bar with circular section bent in such a way as to have two rectilinear end segments 62, 64, a rectilinear central segment 66 and two arched segments 70, 72 which join the central segment 66 and the end segments 62, 64.
  • the end segments 62, 64 are both parallel to the central segment 66.
  • a part of the central segment 66 is preferably provided with a coating of co-moulded plastic material 74.
  • the central segment 66 of the elastic element 60 is borne by the lateral wall 18 of the base structure 12.
  • the end segment 64 of the elastic element 60 reacts against the bottom of a groove formed in the wall 14.
  • the second roller 28 is constituted by a single body of plastic material, preferably nylon, having a hole 74 that engages in freely rotatable fashion the rectilinear end portion 62 of the elastic element 60, without the interposition of bushings or other antifriction material.
  • the end segment 64 whereon the second roller 28 is mounted lacks the plastic material coating, so that the roller 28 is in direct contact with the metallic surface of the elastic element 60.
  • the second roller 28 has an outer cylindrical surface 76 that is in direct contact with the rolling surface 38 formed on the plastic material coating of the tie rod 30. Direct contact between the roller 28 of plastic material and the coating 34, also made of plastic material, could be the cause of noisiness during operation.
  • the surface roughness values of the roller 28 and of the rolling surface 38 of the coating 34 are similar to each other. Preferably, both roughness values are lower than CH27 and preferably between CH22 and CH27.

Abstract

Door-stop device for vehicles, comprising:
- a base structure (12) made of stamped plate with two parallel sides (14, 16),
- a first roller (26) mounted rotatable on a pivot pin (52) fastened between said parallel sides (14, 16),
- an elastic element (60) formed by a bent metal bar having a first end (64) anchored to the base structure (12) and bearing at the second end a second roller (28) mounted rotatable around an axis that is parallel to the axis of the first roller (26),
- a tie rod (30) comprising a metallic core (32) and a coating (34) made of plastic material having two opposite rolling surfaces (36, 38) against which said rollers (26, 28) are pressed by the force produced by said elastic element (60).
The second roller (28) comprises a body made of plastic material having a hole (74) that directly engages a metallic surface of the elastic element (60), the body of plastic material of the second roller (28) having an outer cylindrical surface (76) in direct contact with a rolling surface (38) of the tie rod (30).

Description

  • The present invention relates to a door-stop device for vehicles according to the preamble of claim 1. A door-stop device of this kind is known from the documents EP-A- 1 319 783 and EP-A-1 564 355 by the same Applicant.
  • In door-stop devices of this kind, a tie rod articulated to the vehicle body slides between a pair of rollers borne by a base structure fastened to the door. The two rollers are pressed elastically against opposite rolling surfaces of the tie rod. In the solution described in the document EP-A-1 318 783 , a first roller is mounted rotatable, with the interposition of a bushing, on a pivot pin that is fixed relative to the stamped plate base structure. The second roller is mounted rotatable on the end of a bent bar of metallic material forming the elastic element that produces the force that thrusts the two rollers toward each other. The second roller is mounted on a coating of plastic material co-molded on the end of the elastic element.
  • The main drawback of this solution is that the roller mounted on the plastic coating co-moulded on the end of the elastic element can sometimes stick on the coating, causing the seizing of the roller.
  • In the solution described in the document EP-A-1 564 355 , the second roller comprises an inner rolling element made of plastic material, mounted freely rotatable on an end of the elastic element that lacks plastic coating and the outer rolling element is made of metallic material. This second solution effectively solves the problem of the seizing of the second roller, but it has the drawback of a larger number of components and of a higher cost.
  • The object of the present invention is to provide an improved door-stop device that allows to overcome the drawbacks of prior art solutions. A further object of the present invention is to provide a door-stop device that avoids problems of noisiness.
  • According to the present invention, said objects are achieved by a door-stop device having the characteristics set out in claim 1.
  • The present invention shall now be described in detail with reference to the accompanying drawings, provided purely by way of non limiting example, in which:
    • Figure 1 is a perspective view of a door-stop device according to the present invention,
    • Figure 2 is a perspective view, from a different angle, of the door-stop device of Figure 1,
    • Figure 3 is an exploded perspective view of the door-stop device according to the invention,
    • Figures 4 and 5 are perspective views of the two rollers indicated by the arrows IV and V in Figure 3,
    • Figures 6 and 7 are axial sections of the rollers illustrated in Figures 4 and 5, and
    • Figure 8 is a partially sectioned front view of the door-stop device according to the invention.
  • With reference to Figures 1-3 and 10, the reference number 10 designates a door-stop device for vehicles according to the present invention. The door-stop device 10 comprises a base structure 12 made of stamped plate and having two parallel sides 14, 16 joined together by a lateral wall 18. The parallel walls 14, 16 have respective portions bent at 90° forming fins 20, 22 provided with holes for fastening the base structure 12 to the door of a vehicle (not shown). As shown in Figures 2 and 8, the device 10 comprises a metallic front plate 23 fastened on the front side of the fins 20, 22, e.g. by means of folding teeth 25.
  • Two rollers 26, 28 with mutually parallel axes are positioned in the space between the two parallel walls 14, 16. The two rollers 26, 28 are idle relative to the respective axes and are thrust elastically towards each other in the way that shall be described below.
  • A tie rod 30 is positioned between the two parallel walls 14, 16 of the base structure 12 and it is capable of sliding in the direction of its own longitudinal axis between the two rollers 26, 28. The tie rod 30 is constituted by a metallic core 32 provided with a coating of plastic material 34 co-moulded on the metallic core 32. The coating 34 of the tie rod 30 is preferably based on an acetalic resin. The coating made of plastic material 34 has two mutually opposite rolling surfaces 36, 38 against which the two rollers 26, 28 are pressed in rolling contact.
  • A first end of the tie rod 30 is articulated to a bracket 40 to be fastened to an upright of the vehicle (not shown). The opposite end of the tie rod 30 is shaped as a hook to form a stop against the first roller 26. At least one of the rolling surfaces 36, 38 has one or more positioning notches able to define one or more stable retaining positions of the tie rod 30 relative to the base structure 12. Said stable retaining positions correspond to as many positions of partially open door. A position with the door fully open is defined by the contact position between the hook-shaped end of the tie-rod 30 against the roller 26.
  • With reference to the Figures 3, 4, 6 and 8, the first roller 26 comprises a tubular body 42 made of metallic material, having a hole 44 into which are inserted two bushings 46 each of which has a length that is less than half the height of the tubular body 42. The bushings 46 are preferably made of acetalic resin-based plastic material. Each of the two bushings 46 has a collar 48 that bears on the corresponding front edge 50 of the tubular body 42. A pivot pin 52 extends through the aligned holes of the bushings 46. The pivot pin 52 is fixed relative to the parallel walls 14, 15 of the base structure 12.
  • As shown in Figure 8, a first end of the pivot pin 52 has a broadened head 54 which engages a hole of the wall 14 with the interposition of a bushing 56. A second end 58 of the pivot pin 52 extends through a hole of the wall 16 and it is riveted against the wall 16. The bushings 46 engage the hole 44 in the tubular element 42 with slight interference while the pivot pin 52 engages the holes of the bushings 46 with play, in such a way that the roller 26 is free to rotate around the axis of the pivot pin 52.
  • The door-stop device 10 comprises an elastic element 60 formed by a metal bar with circular section bent in such a way as to have two rectilinear end segments 62, 64, a rectilinear central segment 66 and two arched segments 70, 72 which join the central segment 66 and the end segments 62, 64. The end segments 62, 64 are both parallel to the central segment 66. A part of the central segment 66 is preferably provided with a coating of co-moulded plastic material 74. The central segment 66 of the elastic element 60 is borne by the lateral wall 18 of the base structure 12. The end segment 64 of the elastic element 60 reacts against the bottom of a groove formed in the wall 14.
  • The second roller 28 is constituted by a single body of plastic material, preferably nylon, having a hole 74 that engages in freely rotatable fashion the rectilinear end portion 62 of the elastic element 60, without the interposition of bushings or other antifriction material. The end segment 64 whereon the second roller 28 is mounted lacks the plastic material coating, so that the roller 28 is in direct contact with the metallic surface of the elastic element 60. The second roller 28 has an outer cylindrical surface 76 that is in direct contact with the rolling surface 38 formed on the plastic material coating of the tie rod 30. Direct contact between the roller 28 of plastic material and the coating 34, also made of plastic material, could be the cause of noisiness during operation. To avoid this problem, the surface roughness values of the roller 28 and of the rolling surface 38 of the coating 34 are similar to each other. Preferably, both roughness values are lower than CH27 and preferably between CH22 and CH27.
  • Obtaining the second roller 28 with a single body made of plastic material in direct contact with the metal surface of the metallic element 27 enables to avoid risks of seizure of the roller 28. This solution also enables to reduce the number of components and the cost of the door-stop device 10.

Claims (5)

  1. Door-stop device for vehicles, comprising:
    - a base structure (12) made of stamped plate with two parallel sides (14, 16),
    - a first roller (26) mounted rotatable on a pivot pin (52) fastened between said parallel sides (14, 16),
    - an elastic element (60) formed by a bent metal bar having a first end (64) anchored to the base structure (12) and bearing at the second end a second roller (28) mounted rotatable around an axis that is parallel to the axis of the first roller (26),
    - a tie rod (30) comprising a metallic core (32) and a coating (34) made of plastic material having two opposite rolling surfaces (36, 38) against which said rollers (26, 28) are pressed by the force produced by said elastic element (60),
    characterised in that the second roller (28) comprises a body made of plastic material having a hole (74) that directly engages a metallic surface of the elastic element (60), the body of plastic material of the second roller (28) having an outer cylindrical surface (76) in direct contact with a rolling surface (38) of the tie rod (30).
  2. Door-stop device as claimed in claim 1, characterised in that the outer cylindrical surface (76) of the second roller (28) and the rolling surface (38) of the tie rod (30) have substantially similar roughness values.
  3. Door-stop device as claimed in claim 2, characterised in that the roughness values of the outer cylindrical surface (76) of the second roller (28) and the rolling surface (38) of the tie rod (30) are lower than CH27.
  4. Door-stop device as claimed in claim 3, characterised in that the roughness values of the outer cylindrical surface (76) of the second roller (38) and the rolling surface (38) of the tie rod (30) are between CH22 and CH27.
  5. Door-stop device as claimed in claim 1, characterised in that the first roller (26) comprises a tubular metallic element (42) having a hole (44) engaged by two bushings made of plastic material (46) (46) each of which has a head (48) that bears on a front surface (50) of the tubular element (42), each of said bushings (46) having a length that is smaller than half the height of said tubular element (42).
EP06425584A 2006-08-09 2006-08-09 Doorstop device for vehicles Withdrawn EP1887174A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425584A EP1887174A1 (en) 2006-08-09 2006-08-09 Doorstop device for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425584A EP1887174A1 (en) 2006-08-09 2006-08-09 Doorstop device for vehicles

Publications (1)

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EP1887174A1 true EP1887174A1 (en) 2008-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425584A Withdrawn EP1887174A1 (en) 2006-08-09 2006-08-09 Doorstop device for vehicles

Country Status (1)

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EP (1) EP1887174A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932520A1 (en) * 2008-06-12 2009-12-18 Renault Sas Door rotation stopping device for pick-up van, has connection piece connected in rotation at end of cam along axis, and fixation piece fixing device to door or vehicle and connected in rotation of connection piece along another axis
FR2934301A1 (en) * 2008-07-28 2010-01-29 Peugeot Citroen Automobiles Sa Plate i.e. door stop plate, and wall assembly for motor vehicle, has plate including blocking unit introduced in gap formed between one of rods and end of oblong hole, after engagement of rods in notch and oblong hole, respectively
EP2623696A1 (en) * 2012-12-03 2013-08-07 ISE Automotive GmbH Door stay for motor vehicles
CN103590676A (en) * 2013-11-28 2014-02-19 江苏皓日汽车零部件有限公司 Stopper assembly of opening degree of vehicle rear-double doors
CN113802942A (en) * 2021-09-02 2021-12-17 浙江吉利控股集团有限公司 Car door limiter and car

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207650A1 (en) * 1992-03-11 1993-09-16 Schaeffler Waelzlager Kg Vehicle door stop assembly - has holder arm and engaging roller with different properties
EP1241306A1 (en) * 2001-03-14 2002-09-18 Gammastamp S.p.A. Process for the production of a coated tie rod for a doorstop device for vehicles
WO2003042477A1 (en) * 2001-11-15 2003-05-22 Ventra Group Inc. Torsion spring door check device
EP1319783A1 (en) * 2001-12-14 2003-06-18 Gammastamp S.p.A. Door stop for vehicles
EP1564355A1 (en) * 2004-02-10 2005-08-17 Gammastamp S.p.A. Doorstop device for vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207650A1 (en) * 1992-03-11 1993-09-16 Schaeffler Waelzlager Kg Vehicle door stop assembly - has holder arm and engaging roller with different properties
EP1241306A1 (en) * 2001-03-14 2002-09-18 Gammastamp S.p.A. Process for the production of a coated tie rod for a doorstop device for vehicles
WO2003042477A1 (en) * 2001-11-15 2003-05-22 Ventra Group Inc. Torsion spring door check device
EP1319783A1 (en) * 2001-12-14 2003-06-18 Gammastamp S.p.A. Door stop for vehicles
EP1564355A1 (en) * 2004-02-10 2005-08-17 Gammastamp S.p.A. Doorstop device for vehicles

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932520A1 (en) * 2008-06-12 2009-12-18 Renault Sas Door rotation stopping device for pick-up van, has connection piece connected in rotation at end of cam along axis, and fixation piece fixing device to door or vehicle and connected in rotation of connection piece along another axis
FR2934301A1 (en) * 2008-07-28 2010-01-29 Peugeot Citroen Automobiles Sa Plate i.e. door stop plate, and wall assembly for motor vehicle, has plate including blocking unit introduced in gap formed between one of rods and end of oblong hole, after engagement of rods in notch and oblong hole, respectively
EP2623696A1 (en) * 2012-12-03 2013-08-07 ISE Automotive GmbH Door stay for motor vehicles
CN103590676A (en) * 2013-11-28 2014-02-19 江苏皓日汽车零部件有限公司 Stopper assembly of opening degree of vehicle rear-double doors
CN103590676B (en) * 2013-11-28 2016-03-02 江苏皓日汽车零部件有限公司 Double door door check assembly after automobile
CN113802942A (en) * 2021-09-02 2021-12-17 浙江吉利控股集团有限公司 Car door limiter and car

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