FR2955008A1 - Listening clamp for assistance tool to diagnosis vibro-acoustics during automobile after-sale maintenance or assistance operation, has sledge runner assembled on each jaw by joint such that runner uncouples body from clamp of part - Google Patents

Listening clamp for assistance tool to diagnosis vibro-acoustics during automobile after-sale maintenance or assistance operation, has sledge runner assembled on each jaw by joint such that runner uncouples body from clamp of part Download PDF

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Publication number
FR2955008A1
FR2955008A1 FR1050016A FR1050016A FR2955008A1 FR 2955008 A1 FR2955008 A1 FR 2955008A1 FR 1050016 A FR1050016 A FR 1050016A FR 1050016 A FR1050016 A FR 1050016A FR 2955008 A1 FR2955008 A1 FR 2955008A1
Authority
FR
France
Prior art keywords
clamp
characterized
vibro
clip
assistance
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
Application number
FR1050016A
Other languages
French (fr)
Other versions
FR2955008B1 (en
Inventor
Wilfrid Raguenet
Gregory Autin
Valerie Aubois
Cyril Peronnet
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR1050016A priority Critical patent/FR2955008B1/en
Priority claimed from EP10812869.5A external-priority patent/EP2521904B1/en
Publication of FR2955008A1 publication Critical patent/FR2955008A1/en
Application granted granted Critical
Publication of FR2955008B1 publication Critical patent/FR2955008B1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/16Details, e.g. jaws, jaw attachments
    • B25B5/163Jaws or jaw attachments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00Measuring characteristics of vibrations in solids by using direct conduction to the detector

Abstract

The clamp (10), used in particular in a vibro-acoustic diagnostic tool during a maintenance operation or automotive after-sales assistance, comprises two branches (11, 12) hinged each having at one end a jaw (13). 14) and at the other end a handle (15, 16). A pad (20) is mounted on each jaw (13, 14) via a ball joint (21), so that the pad (20) provides effective contact between the clip (10) and the clip (20). organ under test and decouples the body of the clamp of the listening part. Motor vehicles. Vibro-acoustic diagnosis of motor vehicles or subassemblies of motor vehicles.

Description

The present invention relates to a listening clip for a vibroacoustic diagnostic aid tool, particularly such a tool for detecting a hearing aid. Diagnostic aid used during a maintenance operation or after-sales assistance. It also relates to a tool for assisting in vibro-acoustic diagnosis, which uses such listening clips according to the invention. A vibro-acoustic diagnostic tool comprises, in a manner known per se, a headset adapted to noisy environments, a microphone, four clamps for the detection of sound of a solid nature and a selector for immediately identifying the most effective clamp. close to the vibroacoustic phenomenon to be detected. The metal clamps of such a tool are of the type "battery starting cable". They have several disadvantages. In the first place, they risk causing short circuits. Next, they require three different sizes of clamps to cover powertrain diagnostic applications and vehicle ground connections. Finally, on the same element, listening is different depending on the selected clip, which has the effect of creating difficulties and / or errors of interpretation. The object of the present invention is to provide an improved hearing aid for a vibroacoustic diagnostic aid tool, in particular a listening clip which facilitates and improves, on the one hand, the vibro-acoustic diagnosis. acoustics performed during a car maintenance or after-sales assistance operation and, on the other hand, the work of experts who can thus benefit jointly from a rapid search, analysis and "reporting" tool. through recorded sounds and videos. Another object of the present invention is to provide such a listening clip, which has a good frequency response, in particular between 0 and

4000 Hz, which has a good fastening opening and a small footprint, and avoids any risk of electrical short circuit and is economical. Finally, it is also an object of the present invention to provide a tool for diagnosing vibro-acoustic, which allows simultaneous listening of several instrumented tongs. To achieve these aims, the present invention relates to an improved hearing aid for a vibro-acoustic diagnostic aid tool, which comprises two articulated branches each having at one end a jaw and the other end a handle. In this new gripper according to the invention, a shoe is mounted on each jaw via a ball joint, so that the shoe, on the one hand, ensures effective contact between the clip and the body in test and, on the other hand, decouples the body of the clip of the listening part. According to the preferred embodiment of the invention, the clip is made of rigid plastic material, so that its use can not cause an electrical short circuit. According to the preferred embodiment of the invention also, the pads are made of hard plastic material. The rigid plastic material constituting the clamp may advantageously be an ABS type elastomer (acrylonitrile-butadiene-styrene terpolymer). Preferably, the clamp of the invention comprises a spring substantially coaxial with the hinge axis of the two branches to press the two jaws against each other in the absence of a force of opening the clamp on the sleeves, and this spring is of relatively high stiffness to limit non-linear effects. The plastic material of the clamp is preferably of a hardness of about 80 Shore D, and the plastic of the pad can be of a hardness of about 40 Shore D.

Preferably, the branches of the clamp according to the invention are formed of perforated ribs so as to make the clamp lighter, except in their middle part at the height of their hinge axis with each other where, on the contrary, they are reinforced. The present invention also relates to a vibro-acoustic diagnostic assistance tool, including a diagnostic assistance tool used during a maintenance operation or automotive after-sales assistance, which includes a headset suitable for noisy environments, a microphone, a plurality of clamps for the detection of sound of solid nature and a selector for immediately identifying the clamp closest to the vibro-acoustic phenomenon to be detected. In this new tool according to the invention, the clamps are pliers compliant with that described above in outline. According to a particularly advantageous embodiment of the present invention, the tongs of the diagnostic assistance tool are of the same size. The length of the clamps may be between 8.5 cm and 9 cm, and the distance between the two pads of each clamp may be of the order of 3.5 cm when the clamp is open. Preferably, said tongs are four in number. Other objects, advantages and features of the invention will appear in the following description of a preferred embodiment, not limiting the object and scope of the present patent application, accompanied by drawings in which: • FIG. 1 represents the components of a vibroacoustic diagnostic assistance tool, FIG. 2 schematically represents a listening clip for a vibroacoustic diagnostic aid tool, according to FIG. FIG. 3 is an inside view of an exemplary pad for the clip of FIG. 2,

FIG. 4 is a schematic perspective view showing the assembly of the shoe of FIG. 3 on a gripper according to the invention; FIG. 5 is a graph representative of the elasticity characteristic of the spring of the gripper according to FIG. FIG. 6 shows the type and shape of different hearing clips used; FIG. 7 is a representative graph of the vibratory response as a function of frequency, in the case where the vibration sensor is placed; in the jaws of the forceps, and FIG. 8 is also a representative graph of the vibratory response as a function of frequency, but in the case where the vibration sensor is placed on the ball-and-socket of the forceps. listening. Referring to the drawing of Figure 1, a tool for diagnosing vibro-acoustic diagnosis is in the general form of a helmet 1, adapted to noisy environments, and two types of sensors to analyze, d ' on the one hand, the sound events thanks to the microphone 2 and, on the other hand, the events in the solids thanks to tongs such as the clamp 10. A selector 4 makes it possible to immediately identify the clamp closest to the phenomenon to be detected. Such diagnostic assistance tool is particularly suitable for diagnostics performed during maintenance operations and after-sales assistance by mobile teams called "mobile teams of after-sales support. The present invention relates to an improved clamp, lighter than the current clamps, providing a greater clamping force than the latter, ensuring a variable contact point with the whole test and ideally "decoupled" from the body of the clip. Referring to Figure 2, the improved clamp of the present invention, general reference 10 comprises two articulated branches 11 and 12

each having at one end a jaw 13, respectively 14, and at the other end a handle 15, respectively 16. On each jaw 13, 14 is mounted an identical shoe referenced 20 by means of a ball joint 21, such that the pads 20 provide effective contact between the clamp 10 and the test piece, member or subassembly and "decouple" the body of the clamp from the listening part. The body of the clamp 10 is made of rigid plastic material, for example an elastomer of ABS type (acrylonitrile-butadiene-styrene terpolymer) with a hardness of about 80 Shore D, so that the use of the clamp can not cause electric short circuit. The pads 20 are advantageously made of hard plastic material, for example with a hardness of about 40 Shore D. [0025] The clamp 10 comprises a spring 17 substantially coaxial with the hinge pin referenced A two branches 11 and 12 for pressing the two jaws 13 and 14 against each other in the absence of a force of opening the clamp on the sleeves 15 and 16. This spring 17 is relatively stiff to limit nonlinear effects. To characterize the spring 17, there is shown a survey of the forces "E" on the spring, expressed in Newton, as a function of displacements "d", expressed in millimeters, and this statement is the subject of the graph of Figure 5. As mentioned above, the clamp of the invention is lighter than the known clamps of the prior art, and this thanks to the fact that the two branches 11 and 12 are formed of ribs 11A, 11B; 12A, 12B, perforated so as to make it lighter, except in their middle part at the height of the hinge axis A where they are instead reinforced. Figures 3 and 4 show an embodiment of a pad 20 and its assembly on the listening clip. This assembly is of ball joint type 21. Thus, the pad 20 of Figure 3 has a cylindrical recess 24 for receiving a ball cylinder 21 to form the hinge of the pad 20 on the clamp. The ball cylinder 21 is inserted into the pad 20 by the guides 23.

is fixed on the clamp by "clipping" and is retained in position by the tongue 22 projecting above the cylindrical recess 24. [oo28] Still referring to Figures 2 to 4, by way of non-limiting example of the object and scope of the present invention, the clamp 10 and the pads 20 may have the following dimensions: • a = 4.5 cm (distance between the branches at the free end of the sleeves 15, 16 ); • b = 2.5 cm (distance between the branches at the base of their upper parts); c = 4 cm (length of the lower part of the branches or sleeves 15, 16); • e = 1.5 cm (length of the reinforced base part of the branches); • f = 3.5 cm (length of the upper part of the branches); G = 1 cm (shoe width 20) h = 0.4 cm (shoe thickness 20) • k = 1.5 cm (shoe length 20) [0029] This results in a total length of the clamp 10, referenced "I" in the drawing of Figure 2, which is between 8.5 cm and 9 cm. Vibratory tests have been carried out by the Applicant on the four types of clamp P1, P2, P3 and P4 shown in the drawing of Figure 6. These four clamps, all made of plastic material not to cause short- electrical circuits and risks for users, have hard plastic pads, mounted via ball joints in accordance with the example described above, allowing, therefore, to have, on the one hand , effective contact between the clamp and the part or assembly in

test and, secondly, to decouple the body of the clamp of the listening sensor part. These four types of pliers have different dimensions. These vibration tests have led to the conclusion that the clamp that is best suited for the application of vibro-acoustic diagnosis in maintenance or automotive after-sales assistance is the clamp designated P2. Figures 7 and 8 are representative graphs of the vibratory response (power spectral density or PSD), typically expressed in units g2 / Hz, depending on the frequency in hertz (Hz). In Figure 7, the sensor is placed in the jaws and in Figure 8, the sensor is placed on the ball pad. In Figures 7 and 8, the curves EX correspond to the excitation and are thus substantially "flat", the curves F (P2) represent the response of the clamp P2 while the curves F (P) represent the response the middle clamp, which is the clamp P1 of Figure 6. It is important to note that when the accelerometer is placed on the pad 20 (Figure 8), the overvoltages are extremely damped and the response is substantially "flat" Up to a frequency of the order of 3800 Hz. The clamp according to the invention thus makes it possible to meet the requirement of a substantially "flat" vibratory response in the frequency range from 0 to 4000 Hz. The gripper of the invention has other advantages, among which the following advantages: • it has a large opening and a small clutter, • it makes possible a vibro-acoustic diagnosis by simultaneous listening of several clamps instrumented, it does not cause risk of electrical short circuits. The present invention also relates to a tool for assisting with vibroacoustic diagnosis, in particular a tool for assisting the diagnosis used during a surgical operation.

maintenance or automotive after-sales assistance, and this new tool includes, in addition to a headset adapted to noisy environments and a microphone, four hearing clips in accordance with the clip 10 described above. Preferably, the length of the clamps is between 8.5 cm and 9 cm, and the distance between the two pads 20 of each clamp is of the order of 3.5 cm when the clamp is open. The listening clip according to the invention, despite its small size, has a greater distance to the big clamp that equips the current diagnostic tools known from the prior art. Moreover, it will be noted that the size of the forceps of the invention is much smaller than the size of the average clamp used in currently known diagnostic tools. This size and this distance between the tongs according to the invention make it possible to equip the car earphone with four tongs of the same size, which allows simultaneous listening at different points without risking a degradation of the listening by a structural response of the different clamp. Of course, the present invention is not limited to the embodiment described and shown above by way of example; other embodiments may be devised by those skilled in the art without departing from the scope and scope of the present invention.

Claims (10)

  1. REVENDICATIONS1. Listening tongs (10) for a vibroacoustic diagnostic assistance tool, in particular a diagnostic assistance tool used during a maintenance or after-sales assistance operation, which comprises two branches (11 , 12) articulated each having at one end a jaw (13, 14) and at the other end a handle (15, 16), characterized in that a shoe (20) is mounted on each jaw (13, 14) by means of a ball joint (21), so that the pad (20) ensures effective contact between the clip and the test member and decouples the body of the clip of the listening part.
  2. 2. Clip according to claim 1, characterized in that it is made of rigid plastic material, so that its use can not cause an electrical short circuit.
  3. 3. Clip according to any one of claims 1 and 2, characterized in that the pads (20) are made of hard plastic material.
  4. 4. Clip according to claim 1, characterized in that it comprises a spring (17) substantially coaxial with the hinge axis (A) of the two branches (11, 12) for pressing the two jaws (13, 14). against each other in the absence of an effort to open the clamp on the sleeves (15, 16), and in that said spring (17) is of relatively high stiffness to limit non-linear effects .
  5. 5. Pliers according to claims 2 and 3, characterized in that the plastic material of the clamp (10) has a hardness of about 80 Shore D and in that the plastic of the pad (20) is of a hardness of about 40 Shore D.
  6. 6. Clip according to any one of claims 1 to 5, characterized in that the legs (11, 12) are formed of perforated ribs so as to make the clamp (10) lighter, except in their middle part to the height their hinge axis (A) with each other where they are instead reinforced.
  7. 7. Vibro-acoustic diagnostic assistance tool, in particular a diagnostic assistance tool used during a maintenance operation or after-sales assistance, which includes a headset (1) adapted to noisy environments, a microphone (2), a plurality of clamps (10) for the detection of sound of solid nature and a selector (4) for immediately identifying the clamp closest to the vibro-acoustic phenomenon to be detected, characterized in that the clamps (10) ) are pliers according to any one of claims 1 to 6.
  8. 8. Vibro-acoustic diagnostic aid tool according to claim 7, characterized in that the clamps (10) are of the same size.
  9. Vibroacoustic diagnostic aid tool according to claim 8, characterized in that the length of the clamps (10) is between 8.5 cm and 9 cm, and that the distance between the two shoes (20) ) of each clamp is of the order of 3.5 cm when the clamp is open.
  10. 10. Vibroacoustic diagnostic aid tool according to any one of claims 7 to 9, characterized in that the clamps are four in number.
FR1050016A 2010-01-04 2010-01-04 Listening clip for a vibro-acoustic diagnostic assisting tool used in particular in the automobile field Active FR2955008B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1050016A FR2955008B1 (en) 2010-01-04 2010-01-04 Listening clip for a vibro-acoustic diagnostic assisting tool used in particular in the automobile field

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
FR1050016A FR2955008B1 (en) 2010-01-04 2010-01-04 Listening clip for a vibro-acoustic diagnostic assisting tool used in particular in the automobile field
EP10812869.5A EP2521904B1 (en) 2010-01-04 2010-12-20 Listening clamp for a vibroacoustic diagnosis tool used mainly in the automotive industry
US13/519,855 US8991254B2 (en) 2010-01-04 2010-12-20 Listening clamp for a vibroacoustic diagnosis tool used mainly in the automotive industry
BR112012016490A BR112012016490B1 (en) 2010-01-04 2010-12-20 listening clamp for a tool to aid the vibro-acoustic diagnosis and tool used mainly in the automotive industry
PCT/FR2010/052830 WO2011080466A1 (en) 2010-01-04 2010-12-20 Listening clamp for a vibroacoustic diagnosis tool used mainly in the automotive industry
CN201080065149.8A CN102918375B (en) 2010-01-04 2010-12-20 The audition pincers of the main vibroacoustics diagnostic tool used in the automotive industry
ES10812869T ES2720875T3 (en) 2010-01-04 2010-12-20 Listening clamp for a vibro-acoustic diagnostic aid tool used mainly in the car domain

Publications (2)

Publication Number Publication Date
FR2955008A1 true FR2955008A1 (en) 2011-07-08
FR2955008B1 FR2955008B1 (en) 2012-07-13

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FR1050016A Active FR2955008B1 (en) 2010-01-04 2010-01-04 Listening clip for a vibro-acoustic diagnostic assisting tool used in particular in the automobile field

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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US803668A (en) * 1904-09-30 1905-11-07 William H Clendenon Clamp.
US3779108A (en) * 1971-05-19 1973-12-18 J Reiter Clamp
FR2320536A1 (en) * 1975-08-08 1977-03-04 Sv Sarl Metro Mesures Piezoelectric crystal pressure transducer for tubes - has crystal held by clamp to determine pressure fluctuation in tubes attached to engine
US4187720A (en) * 1978-11-06 1980-02-12 Deere & Company Fuel line injection sensor
US4790191A (en) * 1987-01-12 1988-12-13 Shultz Jr William L Comparative mechanical fault detection apparatus and clamp
US4813107A (en) * 1987-09-04 1989-03-21 Warren Tool Corporation Spring clamp
EP0570229A2 (en) * 1992-05-14 1993-11-18 Auto Konig Abnormal sound detecting apparatus
US5435185A (en) * 1993-08-16 1995-07-25 Eagan; Chris S. Electronic instrument for locating and diagnosing automotive chassis sounds
US5791210A (en) * 1995-03-02 1998-08-11 Wolfcraft Gmbh Spring-tensioning pliers
DE20207948U1 (en) * 2002-05-16 2002-08-14 Lin Kun Meng clamping device
US20030187557A1 (en) * 2002-03-27 2003-10-02 Shockley Stephen W. Auto monitor
GB2391830A (en) * 2002-08-14 2004-02-18 Great Neck Saw Manufacturers Clamp with lockable jaws
US6708587B1 (en) * 1999-02-11 2004-03-23 Wolfcraft Gmbh Vise-grip or expanding pliers
US20050098932A1 (en) * 2003-11-12 2005-05-12 Michael Panosian Spring clamp system
US20090024268A1 (en) * 2007-07-18 2009-01-22 Chris Eagan vehicle diagnostic listening device and method therefor

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US803668A (en) * 1904-09-30 1905-11-07 William H Clendenon Clamp.
US3779108A (en) * 1971-05-19 1973-12-18 J Reiter Clamp
FR2320536A1 (en) * 1975-08-08 1977-03-04 Sv Sarl Metro Mesures Piezoelectric crystal pressure transducer for tubes - has crystal held by clamp to determine pressure fluctuation in tubes attached to engine
US4187720A (en) * 1978-11-06 1980-02-12 Deere & Company Fuel line injection sensor
US4790191A (en) * 1987-01-12 1988-12-13 Shultz Jr William L Comparative mechanical fault detection apparatus and clamp
US4813107A (en) * 1987-09-04 1989-03-21 Warren Tool Corporation Spring clamp
EP0570229A2 (en) * 1992-05-14 1993-11-18 Auto Konig Abnormal sound detecting apparatus
US5435185A (en) * 1993-08-16 1995-07-25 Eagan; Chris S. Electronic instrument for locating and diagnosing automotive chassis sounds
US5791210A (en) * 1995-03-02 1998-08-11 Wolfcraft Gmbh Spring-tensioning pliers
US6708587B1 (en) * 1999-02-11 2004-03-23 Wolfcraft Gmbh Vise-grip or expanding pliers
US20030187557A1 (en) * 2002-03-27 2003-10-02 Shockley Stephen W. Auto monitor
DE20207948U1 (en) * 2002-05-16 2002-08-14 Lin Kun Meng clamping device
GB2391830A (en) * 2002-08-14 2004-02-18 Great Neck Saw Manufacturers Clamp with lockable jaws
US20050098932A1 (en) * 2003-11-12 2005-05-12 Michael Panosian Spring clamp system
US20090024268A1 (en) * 2007-07-18 2009-01-22 Chris Eagan vehicle diagnostic listening device and method therefor

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Publication number Publication date
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