EP1472049A1 - Compresseur de ressorts de suspension de vehicule automobile - Google Patents
Compresseur de ressorts de suspension de vehicule automobileInfo
- Publication number
- EP1472049A1 EP1472049A1 EP02806034A EP02806034A EP1472049A1 EP 1472049 A1 EP1472049 A1 EP 1472049A1 EP 02806034 A EP02806034 A EP 02806034A EP 02806034 A EP02806034 A EP 02806034A EP 1472049 A1 EP1472049 A1 EP 1472049A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- jaw
- track
- compressor according
- attachment
- 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.)
- Granted
Links
Classifications
-
- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/30—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs
- B25B27/302—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs
- B25B27/304—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs by compressing coil springs
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/536—Piston ring inserter or remover
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/536—Piston ring inserter or remover
- Y10T29/53604—Plier-type operation
- Y10T29/53609—Plier-type operation with ring encirclement
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53613—Spring applier or remover
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53613—Spring applier or remover
- Y10T29/53622—Helical spring
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53613—Spring applier or remover
- Y10T29/5363—Circular spring
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53678—Compressing parts together face to face
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53683—Spreading parts apart or separating them from face to face engagement
Definitions
- the present invention relates to the field of tools useful for mounting and maintaining motor vehicle suspensions.
- Motor vehicle shock absorbers have helical springs which must be compressed to separate them from the shock absorber itself or to extract the damped suspension unit from a vehicle.
- spring compressors are known for this purpose. All of them comprise a jack (mechanical, electrical, hydraulic or pneumatic) comprising at least two elements which can be moved telescopically, one relative to the other with, linked to each element, a gripping member intended to cooperate with the spring (a portion turn it for each organ) to compress it.
- a jack mechanical, electrical, hydraulic or pneumatic
- These different spring compressors are distinguished from each other on the one hand, by the means of attachment of the gripping members to the elements of the jack and on the other hand, by the shape of these members according to whether they comprise a continuous track to cooperate with the spring (we will then speak of cups) or that they comprise two arms articulated to the attachment part whose ends are in the form of a gutter to accommodate the turn of the spring to be treated (we will then speak of claws).
- the part of the jaw which carries the articulations of the arms comprises a sort of hook (a small cradle) which receives the turn of the spring and plays the role of the flap above.
- the cups provide spring support on a contact line along which the load is better distributed than in the case of the claws where, at best three point areas are in contact with the spring with, at these locations, high concentrations of stresses.
- the cups are of fixed geometry and require having several sets of cups to treat the different dimensions of springs which are encountered on the market while the claws, due to the articulation of the arms, can embrace a more large dimensional variety of springs.
- Cups like claws are often ill-suited to grip the coils of suspension springs which are close to the plates of their end support.
- the present invention is meant to combine the advantages of claws and cups while eliminating most of the disadvantages, with the added advantage of having to use only one set of jaws to operate on the vast majority of springs. on the market.
- the invention therefore relates to a spring compressor comprising a jack with a body and a rod movable telescopically relative to each other and two jaws • each comprising a part for attachment to the jack and a part working gear intended to engage with a coil of a helical spring.
- the working part of each jaw comprises a first and a second part, the first part being connected to the attachment part and defining a section of track for the support of a portion of a spring turn, provided along its inner edge with a retaining edge of the turn and the second part being in the form of an arm, articulated either at the first part or at the attachment part, adjacent swimming at one end of the track section around an axis substantially perpendicular to the surface of the track and forming at its free end a zone for taking over a turn of the spring which may be in the form of a cradle or gutter or which may have a hook or radial retaining rim of the coil of the spring.
- the jaw thus formed has a much smaller footprint than the known cups while offering a significant contact with the turn of the spring engaged at the level of the track section.
- this jaw is more resistant than a claw jaw which has two joints through which passes almost all of the compression force, joints which are the most mechanically fragile places of a claw jaw.
- the upper surface of the track may be in the form of a circular sector of a substantially planar crown and inclined relative to the axis of the attachment part by an angle which corresponds substantially to the helix angle made by each turn of spring. It can also be helical in shape.
- the claw-forming arm is articulated around an axis (substantially perpendicular to the track) whose orientation in space and relative to the surface of the track section will be determined so that the cradle or the gutter of end of this arm is roughly in the circular extension of the surface of the track, so that the support points belong substantially to a surface congruent with that of the portion of spring in contact with which they are when the jaw is engaged.
- the shape of the arm itself will be studied to give it the most maneuverability possible.
- a bisector plane of the portion of the spring turn embraced by the working part of the jaw is situated on the side of the arm with respect to a plane passing through the center or the axis of the spring and the center or the axis of the part for attaching the jaw to the jack.
- This particular geometry. lière of the jaw according to the invention is that which gives the compressor of the invention the greatest adaptability to the various shock absorbers on the market in terms of compression efficiency. Thanks to this circumferential offset, by using two identical jaws on a jack, one obtains a grip of the enveloping spring which is a guarantee of safety. Furthermore, it will be advantageous to provide a section of track of increasing width from its free end towards its end close to the articulation of the arm. In this way the track can accommodate springs of different diameters.
- FIG. 1 is a view of the active face of a first embodiment of a jaw according to the invention
- Figure 2 is a view similar to that of Figure 1 in which there is shown in dot line- tilled, a second jaw when it is attached to the spring compressor cylinder,
- FIG. 3 is a sectional view along line III-III of Figure 1,.
- - Figure 4 illustrates an embodiment of the attachment part of the jaw of the invention to a spring compressor cylinder and a particular embodiment of the connection of the attachment and working parts of the jaw
- - the FIG. 5 is a schematic representation of another embodiment of the jaw according to the invention in which the arm is articulated to the attachment part instead of being articulated to the part carrying the track section
- - the figures 6 and 7 are diagrams illustrating a spring compressor according to the invention in engagement with a shock absorber
- FIG. 8 is a partial exterior view of a cylinder body allowing the attachment of a jaw on two levels.
- the jaw 1 shown in Figure 1 has an attachment portion 2 to a spring compressor cylinder and a working portion 3 connected to the attachment portion 2 and intended to be engaged with a coil of the spring to be compressed.
- the working part 3 is in two parts.
- a first part 4, here in one piece with the attachment part 2, defines a circular, planar or helical track section 5.
- the track 5 is over-sealed with a tab 6 which forms a hook under which a spring turn can be slid.
- This tab 6 comes from the internal edge 5b of the track 5 which has a flange or a flap 7 for retaining the coil of the spring.
- This flap 7 extends in the figure all along the internal edge 5b of the track.
- this flap may occupy only the central part of this internal edge.
- the end 5a of the track section is hollowed out (reference 5d) or bevelled so that the thickness of the wall of the part which forms the track at this location is progressively reduced.
- This bevel makes it possible to accommodate the end 5a of the track section as far as possible in the angle formed by a turn of spring leaving its end plate.
- the other end 5c of the track section 5 is wider than the end 5a (in its dimension taken radially), which allows it to be able to accommodate springs such as 8, 9 of different winding diameter.
- the part 4 carrying the track section 5 has a hinge yoke 10 with an axis 11 outside the track, for an arm 12 which forms the second part of the part working jaw and whose free end has two flanges 13 and 14 which define with the arm a cradle or a gutter for taking charge of the turn of the spring 8 or 9.
- the cradle 13, 14 of this arm can be replaced by an end having, like the end 5a of the track section, a lug overhanging a surface for taking charge of a spring turn.
- the end of the arm 12 can, also like the track section, be of a thickness progressively reduced.
- the axis 11 is oriented so as to be substantially perpendicular to the surface of the track section 5 so that the end cradle of the arm 12 is substantially in the extension of the upper surface of the track section 5.
- Figure 3 is a sectional view along line III-III of Figure 1 of the articulation of the arm 12 to the part 4.
- This figure shows the elements described ⁇ previously described with the same references.
- the center of the spring 8 is noted 80 while the center of the spring 9 is noted 90.
- the planes PI, P2 which are respectively the bisector planes of the turn part of the springs 8, 9 embraced by the part working jaw 3, are located on the side of the arm 12 with respect to the plane P3 passing through the center or the axis X of the attachment part and the center 80, 90 of the engaged spring.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vehicle Body Suspensions (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Vibration Prevention Devices (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200295A FR2834660B1 (fr) | 2002-01-11 | 2002-01-11 | Compresseur de ressorts de suspension de vehicule automobile |
FR0200295 | 2002-01-11 | ||
PCT/FR2002/004524 WO2003057414A1 (fr) | 2002-01-11 | 2002-12-23 | Compresseur de ressorts de suspension de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1472049A1 true EP1472049A1 (fr) | 2004-11-03 |
EP1472049B1 EP1472049B1 (fr) | 2005-09-28 |
Family
ID=8871241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02806034A Expired - Lifetime EP1472049B1 (fr) | 2002-01-11 | 2002-12-23 | Compresseur de ressorts de suspension de vehicule automobile |
Country Status (9)
Country | Link |
---|---|
US (1) | US7114228B2 (fr) |
EP (1) | EP1472049B1 (fr) |
AT (1) | ATE305366T1 (fr) |
AU (1) | AU2002365021A1 (fr) |
CA (1) | CA2473022C (fr) |
DE (1) | DE60206423T2 (fr) |
ES (1) | ES2249643T3 (fr) |
FR (1) | FR2834660B1 (fr) |
WO (1) | WO2003057414A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2886566A1 (fr) * | 2005-06-03 | 2006-12-08 | Patrick Lambert | Coupelle de surete pour compresseur de ressort |
EP1825960A1 (fr) * | 2006-02-24 | 2007-08-29 | Patrick Lambert | Compresseur de ressorts |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7103951B2 (en) * | 2005-02-08 | 2006-09-12 | Ismet Uzun | Strut spring compression apparatus |
CN115805563B (zh) * | 2022-11-30 | 2024-07-02 | 深蓝汽车科技有限公司 | 弹簧压缩装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2813381C2 (de) * | 1978-03-28 | 1982-12-30 | Horst 7730 Villingen-Schwenningen Klann | Druckfedernspanner |
DE3021084A1 (de) * | 1980-06-04 | 1981-12-24 | August Bilstein GmbH & Co KG, 5828 Ennepetal | Federspanngeraet |
GB2117307B (en) * | 1982-03-18 | 1985-10-30 | Kenneth Donald Kloster | Helical spring compressor |
DE3720018C2 (de) * | 1986-12-11 | 1988-09-29 | Horst Klann | Federnspanner |
FR2653051A1 (fr) * | 1989-10-18 | 1991-04-19 | Mecanique Energetique | Dispositif de compression de ressorts. |
DE9216147U1 (de) * | 1992-11-27 | 1993-03-25 | SSW Schmack Spezialwerkzeuge GmbH & Co. Entwicklungs KG, 6400 Fulda | Federspanner für die Montage von Schraubenfedern einer Fahrzeugfederung |
JP3661021B2 (ja) * | 1995-11-10 | 2005-06-15 | カヤバ工業株式会社 | スプリングコンプレッサ |
FR2749363A1 (fr) * | 1996-06-03 | 1997-12-05 | Mecanique Energetique | Compresseur de ressort a fluide sous pression |
IT1308450B1 (it) * | 1999-04-23 | 2001-12-17 | Parodi Iva | Attrezzatura di smontaggio e di montaggio di gruppimolla-ammortizzatore per sospensioni di veicoli |
US6336625B1 (en) * | 2000-08-28 | 2002-01-08 | Tsai-Tien Liao | Adjustable shock absorber mounting structure |
-
2002
- 2002-01-11 FR FR0200295A patent/FR2834660B1/fr not_active Expired - Fee Related
- 2002-12-23 US US10/500,386 patent/US7114228B2/en not_active Expired - Fee Related
- 2002-12-23 AT AT02806034T patent/ATE305366T1/de not_active IP Right Cessation
- 2002-12-23 CA CA002473022A patent/CA2473022C/fr not_active Expired - Fee Related
- 2002-12-23 DE DE60206423T patent/DE60206423T2/de not_active Expired - Lifetime
- 2002-12-23 AU AU2002365021A patent/AU2002365021A1/en not_active Abandoned
- 2002-12-23 ES ES02806034T patent/ES2249643T3/es not_active Expired - Lifetime
- 2002-12-23 WO PCT/FR2002/004524 patent/WO2003057414A1/fr not_active Application Discontinuation
- 2002-12-23 EP EP02806034A patent/EP1472049B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03057414A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2886566A1 (fr) * | 2005-06-03 | 2006-12-08 | Patrick Lambert | Coupelle de surete pour compresseur de ressort |
EP1825960A1 (fr) * | 2006-02-24 | 2007-08-29 | Patrick Lambert | Compresseur de ressorts |
FR2897791A1 (fr) * | 2006-02-24 | 2007-08-31 | Patrick Lambert | Compresseur de ressorts |
Also Published As
Publication number | Publication date |
---|---|
DE60206423D1 (de) | 2005-11-03 |
ES2249643T3 (es) | 2006-04-01 |
CA2473022A1 (fr) | 2003-07-17 |
US7114228B2 (en) | 2006-10-03 |
DE60206423T2 (de) | 2006-07-06 |
WO2003057414A1 (fr) | 2003-07-17 |
FR2834660A1 (fr) | 2003-07-18 |
US20050125977A1 (en) | 2005-06-16 |
EP1472049B1 (fr) | 2005-09-28 |
ATE305366T1 (de) | 2005-10-15 |
FR2834660B1 (fr) | 2004-06-18 |
AU2002365021A1 (en) | 2003-07-24 |
CA2473022C (fr) | 2008-02-12 |
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