CN101284512B - Load-sensor-equipped vehicle operating pedal device and load-sensor-equipped operating device - Google Patents

Load-sensor-equipped vehicle operating pedal device and load-sensor-equipped operating device Download PDF

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Publication number
CN101284512B
CN101284512B CN2008100916883A CN200810091688A CN101284512B CN 101284512 B CN101284512 B CN 101284512B CN 2008100916883 A CN2008100916883 A CN 2008100916883A CN 200810091688 A CN200810091688 A CN 200810091688A CN 101284512 B CN101284512 B CN 101284512B
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strain
shaft
parts
load
case member
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CN101284512A (en
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藤原升
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Toyoda Iron Works Co Ltd
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Toyoda Iron Works Co Ltd
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Abstract

A load-sensor-equipped vehicle operating pedal device includes a load sensor ( 30 ) having a case member ( 34 ) formed with a pair of mounting wall portions ( 62 a, 62 b) converged in a convex shape at a predetermined apex angle alpha. The pair of mounting wall portions ( 62 a, 62 b) are held in surface contact with a pair of rest surfaces ( 28 a, 28 b), formed in a sensor-mounting hole ( 28 ) in a fixed and positioned state. Thus, even if a direction of an input load (reactive force), applied to a clevis pin ( 26 ) varies with an operating pedal 16 being progressively depressed, the pair of rest surfaces ( 28 a, 28 b) always bear the input load via the pair of mounting wall portions ( 62 a, 62 b). This suppresses the case member ( 34 ) from flexure deforming due to stress concentration.; As a result, positional displacement of a sensor is prevented regardless of a variation in the direction of the input load, improving detecting precision.

Description

The vehicle operating pedal device and the handling device of load transducer be equipped with
The application is based on Japanese patent application No.2007-106377 and Japanese patent application No.2007-330823, and their content quotation is in this.
Technical field
The present invention relates to handling device, for example vehicle operating pedal device etc. relates more specifically to the improvement for the handling device that is equipped with load transducer, and said handling device has the load transducer that is used for electro-detection (electrically detecting) operating effort.
Background technology
Known up to now such one type handling device that is equipped with load transducer, it comprise (a) can be shifted the operated operating unit in ground; (b) reaction member; (c) at least one pivot (rotation) connecting portion; (d) load transducer.The operating effort of said operating unit is delivered to said reaction member, and an antagonistic force acts on the said reaction member according to operating effort.So that a pair of component interconnect that can be pivoted relative to each other around connecting pin, said operating effort is through said connecting pin transmission between said operating unit and said reaction member at least one pivot connecting portion.This operating effort of said load transducer electro-detection.
Patent documentation 1 (U.S. patent No.5563355) discloses a kind of vehicle brake pedal device, can represent an example of the handling device that is equipped with load transducer.This handling device of load transducer that is equipped with is configured to, and the push rod (reaction member) that stretches out from master cylinder is connected to the connecting pin that stretches out from the sidepiece of operating pedal, so that relative motion vertically.Like this, the application force of push rod antagonistic spring and detecting by sensor with respect to the displacement of connecting pin displacement.
But,, be connected to allow push rod to move with respect to connecting pin vertically, so can't use push rod commonly used intactly with connecting pin because push rod need be formed with elongated hole for patent documentation 1 disclosed this device.In addition, because (trampling) displacement that presses down of operating pedal makes the push rod pivot to pivot with respect to connecting pin, so need install pivotly with respect to connecting pin with the sensor that detects displacement to the spring of the push rod application of force.As a result, the structure of device becomes complicated.
In addition, push rod, spring and sensor are positioned at the lateral side regions of operating pedal, and making brake pedal especially need have strong is firm structure, to guarantee stable serviceability.This causes device size on the whole to increase, and makes manufacturing cost increase.
On the contrary, shown in Figure 21 A and 21B, considered that such technology provides a kind of structure (not known as yet), is used for the layout of compactness load transducer being installed in the connection location of rod pin (clevis pin).Figure 21 A and 21B illustrate the view that generally uses the operating pedal device 200 of car brake promptly commonly used.Figure 21 A is a front elevation, and Figure 21 B is the enlarged view that illustrates along the cutaway view of the line XXIA-XXIA intercepting of Figure 21 A.
One tabular operating pedal 16 is installed on the pedal support 12 that integrally promptly is fixed on integratedly on the vehicle, so that can pivot around the axis of the support shaft 14 that extends along the direction of approximate horizontal.But the operating pedal 16 that can be pressed down by driver's operation in response to braking requirement has the lower end that comprises pressing down section (foot pedal pad) 18 and through the control lever 22 bonded assemblys middle part of pivot connecting portion 20 with brake servo unit.Pivot connecting portion 20 comprise U-shaped U-shaped clamp (clevis, clevis) 24 with rod pin 26, U-shaped clamp 24 is integrally connected to an end of control lever 22 by means of thread connector etc., rod pin 26 is parallel to support shaft 14 ground and is installed on the operating pedal 16.Pivot connecting portion 20 is configured to make control lever 22 and operating pedal 16 to interconnect pivotally around the axis of rod pin 26.
Have two axial end portions that stretch out from the both sides of operating pedal 16 with the cooresponding rod pin 26 of connecting pin, these two axial end portions are kept with adeciduate mode through snap ring or stop pin by U-shaped clamp 24.Be delivered to control lever 22 corresponding to the output that acts on the operating effort on the operating pedal 16 through pivot connecting portion 20, and the antagonistic force that caused and said output equates acts on the control lever 22 by means of brake servo unit.Control lever 22 is corresponding to reaction member.For being used for car side brake is carried out automatically controlled wire controlled operating pedal device, the effect owing to counteraction mechanism etc. of then being connected to is applied with the reaction member that predetermined antagonistic force promptly receives predetermined antagonistic force and replaces control lever 22.
Operating pedal 16 has the connection part that links to each other with rod pin 26, and this connection part is formed with the diameter sensor mounting hole 202 bigger than the diameter of rod pin 26.The load transducer 204 that is located in the annular space between sensor mounting hole 202 and the U clevis pin 26 comprises that it is that strain triggers element 206 that the strain cylindraceous that is used to detect the load that radially applies above that triggers.Load transducer 204 also comprises the case member (case member) 208 of the annular that is arranged on strain triggering element 206 outsides and is arranged on the shaft like parts 210 in strain triggering element 206 area inside.
All connecting portion 208a, periphery wall 208b cylindraceous, tabular flange connector 208c and locating flange 208d constitute case member 208 in double-layered cylinder shape structure cylindraceous by forming on the whole.Place the interior connecting portion 208a in zone of interior week of case member 208 to have axial, the axial end portion (from its upper end that Figure 21 B looks) that strain triggers element 206 is fixed on this axial through force fit, welding etc. integratedly.Periphery wall 208b is formed in the outer regions of connecting portion 208a with around connecting portion 208a.Flange connector 208c has makes connecting portion 208a and periphery wall 208b in the interconnective integratedly zone of their axial end.Locating flange 208d forms and radially outwards gives prominence to from periphery wall 208b in abutting connection with flange connector 208c.Case member 208 is arranged to make periphery wall 208b to be assemblied in the sensor mounting hole 202, and makes a contacts side surfaces of locating flange 208d and operating pedal 16 with non-removable mode with (not shown) such as leaf springs.
Shaft like parts 210 keeps strain to trigger another axial end portion (bottom among Figure 21 B) of element 206 through force fit, welding etc. integratedly, and has the patchhole 210h that supplies rod pin 26 to pass.Rod pin 26, patchhole 210h and U-shaped clamp 24 are made for and can relatively rotate.Like this, they can be operated and relatively rotate under the situation that operating pedal 16 is pressed down, to reduce friction.But, also can bearing or lining be installed as required on relevant parts to reduce friction.
Like this, case member 208 interconnects through strain triggering element 206 with shaft like parts 210.Trigger load on the element 206 and become when being zero basically when direction that radially to be the edge from the outside trigger the axis normal of element 206 with strain is applied to strain, the axis essentially concentric that corresponding parts 206,208 and 210 keep being in rod pin 26 is coaxial state.Otherwise if along with the pressing down of operating pedal 16, because the antagonistic force of control lever 22 and radially load being applied between case member 208 and the shaft like parts 210, then strain triggers element 206 shear deformations takes place.As a result, the case member 208 of oriented manipulation pedal 16 along more near the direction of control lever 22 (direction left of looking from Figure 21 A) with respect to shaft like parts 210 displacements.
Between case member 208 and shaft like parts 210, be provided with annular space and radially be shifted relatively, and allow strain to trigger element 206 generation shear deformations to allow these parts.Strain triggers element 206 and is processed by metallic material that elastic deformation can take place when being applied with radial weight such as ferritic stainless steel with excellent formability etc.Like this, along with pressing down of operating pedal 16, the operating effort that is produced makes strain trigger element 206 generation shear deformations.In order to detect the shear strain that strain triggers element 206, trigger in strain the strain test element that partly is electrically connected through the wire harness 56 and the control circuit of vehicle such as strain resistance element etc. are installed on outer surface or the interior perimeter surface of element 206.Like this, the control circuit part can detect based on the electric signal from strain test element output and press down operating effort.
Through the vehicle operating pedal device 200 of this structure, the operating effort that pivot connecting portion 20 will be applied on the operating pedal 16 is delivered to control lever 22.Through pivot connecting portion 20, the operating pedal 16 that can be connected to control lever 22 relative to each other pivotally through rod pin 26 has sensor mounting hole 202 and is defined in the annular space between sensor mounting hole 202 and the rod pin 26 to allow load transducer 204 cylindraceous to be installed in.This reduces to minimum with rotating torque like the possibility of generations such as reversing, makes operating pedal device 200 can form simple on the whole and compact design.In addition, operating pedal device 200 can adopt and peripheral components identical in traditional device with pedal such as control lever 22 and U-shaped clamp 24, thereby can reduce the manufacturing cost of device.
But for the vehicle operating pedal device 200 of this structure, the case member 208 of load transducer 204 forms cylindric configuration.Pass shaft like parts 210 and trigger under input load (the being antagonistic force in this case) F of the case member 208 of element 206 with strain being delivered to from rod pin 26, the basic point (position) on the periphery wall 208b of case member 208 is compressed against on the interior perimeter surface of sensor mounting hole 202 to bear input load F.
Like this, with shown in the mode of amplifying, case member 208 has owing to stress concentration produces diastrophic worry like Figure 22 A and 22B.Figure 22 A illustrates the load transducer 204 that is under the no load state, and Figure 22 B illustrates the load transducer 204 that is under the state that is applied with load F.Figure 22 A and 22B have with the upper area shown in the front elevation with the lower area shown in the cutaway view.Since the flexural deformation that in case member 208, produces, strain trigger distortion that element 206 stands not expect as crooked, reverse etc., perhaps strain triggers element 206 and has the deflection that reduces, thereby causes making that the accuracy of detection of operating effort possibly reduce.
In addition, when operating pedal 16 along with being pressed down when the axis of support shaft 14 pivots, control lever 22 also is pivoted relative to each other around the axis of rod pin 26 with operating pedal 16.This makes the direction that applies of input load F change, thereby causes case member 208 to be shifted to wave the mode of promptly rocking owing to the gap between case member 208 and the sensor mounting hole 202.Given this, existence is to the worry of the accuracy of detection reduction of operating effort.
With shown in the mode of amplifying, apply direction if input load F keeps changing under the diastrophic situation at case member 208 like Figure 23 A and 23B, then the strain distortion pattern that triggers element 206 becomes complicated, and is easy to thus deformation rate is changed.This causes accuracy of detection further to reduce and maybe deficient in stability.Periphery wall 208b and strain triggering element 206 boths that Figure 23 A illustrates case member 208 stand diastrophic situation.Figure 23 B is illustrated in periphery wall 208b and strain and triggers element 206 boths and keep diastrophic state under input load F to be applied to strain with altered direction triggering the another kind of situation on the element 206, and all the other zones except that the zone of action of importing load F that strain in this case triggers element 206 also deform.In this case, even when input load F applies with identical ratio, strain test element 212 and 214 is also than under the state shown in Figure 23 A, having littler mean strain value.
For the operating pedal device 200 that is used in the practical application,, be the worry of operating effort so there is input load F to being difficult to detect exactly increase because input load F increases according to the stroke that presses down of operating pedal 16.
Summary of the invention
Consider above-mentioned viewpoint and accomplish the present invention; And its objective is provides a kind of handling device that is equipped with load transducer; Said load transducer is arranged in the pivot connecting portion to detect the operating effort that transmits through connecting pin; And can operate with based on the accuracy of detection incoming call detecting operation power of the relative displacement between shaft like parts and the case member to improve, said shaft like parts and case member can be operated and the direction of edge and the axis normal of shaft like parts is shifted relatively.
To achieve these goals; First aspect of the present invention relates to a kind of vehicle operating pedal device that is equipped with load transducer; It comprises (a) operating pedal; Said operating pedal is installed on the pedal support that is fixedly secured on the vehicle, also can be pressed down by the operator so that can pivot around the axis of support shaft; (b) reaction member, said reaction member receive the operating effort of said operating pedal and produce and the cooresponding antagonistic force of said operating effort; (c) at least one pivot connecting portion, said pivot connecting portion places between said operating pedal and the said reaction member, has relative to each other bonded assembly constituent elements pivotly of an opposing connection connecting pin, and transmits said operating effort through said connecting pin; (d) load transducer of the said operating effort of electro-detection.
This vehicle operating pedal device of load transducer that is equipped with is characterised in that; (e) said load transducer comprises (e-1) shaft like parts; (e-2) case member of annular; Said case member is configured in the radial outside of said shaft like parts so that the direction of edge and the axis normal of said shaft like parts is shifted with respect to said shaft like parts; And diametrically around said shaft like parts; (e-3) be configured between said shaft like parts and the said case member to trigger and be the strain initiation element and (e-4) be fixed on said strain and trigger the strain test element on the element, (e-5) wherein with strain across them; Said antagonistic force makes the direction of said shaft like parts and said case member edge and the axis normal of said shaft like parts relatively move and makes said strain trigger deformed element, thereby said strain test element detects the distortion that said strain triggers element; (f) said case member is configured on the sensor installing component; Said sensor installing component is made up of in the interconnective said constituent elements of the said connecting pin in said pivot connecting portion any, and said shaft like parts is connected in the said constituent elements another through said connecting pin; (g) said case member have respectively be formed on said sensor installing component on a plurality of installation portions of engaging of a plurality of load acceptance divisions, and be configured in the said sensor installing component with fixing attitude location; Even and (h) from said shaft like parts through said strain trigger element be delivered to said case member input load F direction since said pivot connecting portion along with said operating pedal press down be pivoted relative to each other motion and when changing relatively, said a plurality of load acceptance divisions also support said input load F through said a plurality of installation portions all the time.
Second aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer of said first aspect; (a) said a plurality of installation portion comprises with predetermined apex evagination ground and is formed on a pair of flat attachment face in the plane with the axis normal of said shaft like parts, and said a plurality of load acceptance division comprises and said attachment face a pair of flat by putting face in said sensor installing component of ground connection (in conjunction with) and interior concave relief one-tenth mutually; And (b) said case member is with fixing attitude location, makes a pair ofly to be undertaken under the situation that face contacts by putting face with said respectively at said a pair of attachment face, and said a pair of attachment face is pressed against said a pair of by putting on the face by said input load F.
The third aspect of the invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer of said second aspect; Saidly be determined to be by the orientation and the said apex of putting face; Even in the direction of said input load F since said pivot connecting portion along with said operating pedal press down be pivoted relative to each other motion and when changing relatively, said a pair of attachment face also is pressed against said a pair of by putting on the face all the time respectively based on said input load F.
Fourth aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer of the said third aspect; Saidly be determined to be by the orientation and the said apex of putting face; Even in the direction of said input load F since said pivot connecting portion along with said operating pedal press down be pivoted relative to each other motion and when changing relatively since from said by putting the antagonistic force that face produces, said a pair of attachment face also produces the component towards the summit of protruding configuration all the time.
The 5th aspect of the present invention is characterised in that; Said second to the vehicle operating pedal device that is equipped with load transducer of fourth aspect, said apex be selected to than with the input load F that changes since said pivot connecting portion along with (180 °-β) little of the relevant angles of the variable-angle β of the direction that changes of moving that are pivoted relative to each other that press down of said operating pedal.
The 6th aspect of the present invention is characterised in that; In aspect said second to the 5th in each the vehicle operating pedal device that is equipped with load transducer; Said a pair of attachment face forms the symmetry about neutral surface S; Said neutral surface S comprises the summit of the protruding configuration that is formed by said a pair of attachment face convergence, and the axis that is in the said shaft like parts under the no load state.
The 7th aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer aspect the said the 6th; (a) said case member has (a-1) and said strain and triggers element all connecting portions in the bonded assembly integratedly; (a-2) be formed on the said connecting portion outside and around the periphery wall cylindraceous of said connecting portion and (a-3) make the interconnective integratedly tabular flange connector of said periphery wall and said connecting portion; And (b) said periphery wall has the assembly wall portion of (b-1) pair of plate-shaped; The outer surface of the assembly wall portion of said pair of plate-shaped forms said a pair of attachment face; (b-2) parallel with said neutral surface S and about said neutral surface S symmetrically, a pair of flat tabular parallel walls portion that forms continuously with said a pair of assembly wall portion, and (b-3) between the remainder except that said assembly wall portion of said sensor installing component and said periphery wall, be provided with the gap.
Eight aspect of the present invention is characterised in that in the vehicle operating pedal device that is equipped with load transducer aspect the said the 6th or the 7th, (a) said strain triggering element has the drum of hollow and is configured to said shaft like parts concentric; And (b), said strain in predetermined angular range, is provided with a plurality of said strain test elements on triggering outer peripheral face or the inner peripheral surface of element about said neutral surface S symmetry.
The 9th aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer of said eight aspect, four said strain test elements be arranged on said neutral surface S and with plane that said neutral surface S vertically triggers the axis of element through said strain be boundary line and about four positions of said neutral surface S symmetry.
The tenth aspect of the present invention is characterised in that; In aspect said second to the 9th in each the vehicle operating pedal device that is equipped with load transducer; (a) said sensor installing component comprises plate-shaped member; Said plate-shaped member can be connected to said reaction member with respect to said reaction member pivotally around said connecting pin, and have be formed with said a pair of by putting the sensor mounting hole of face; (b) said load transducer allows its case member in said sensor mounting hole, to be arranged to make said a pair of attachment face a pair ofly to carry out face and contact by putting face with said respectively; (c) said connecting pin inserts and stretches out from two axial ends of said sensor mounting hole along the axis of said shaft like parts; And (d) said connecting pin has two axial ends that kept by the U-shaped clamp that is fixed on integratedly on the said reaction member.
The of the present invention the tenth is characterised in that on the one hand; In aspect said second to the tenth in each the vehicle operating pedal device that is equipped with load transducer; Said strain triggering element has an end and the other end is fixed on the hollow cylinder configuration on said case member and the said shaft like parts respectively integratedly, so that because triggering the shear strain that causes in the element in said strain and being detected by said strain test element at the relative displacement between said case member and the said shaft like parts in response to said antagonistic force.
The 12 aspect of the present invention is characterised in that; In aspect said second to the 7th in each the vehicle operating pedal device that is equipped with load transducer; Said strain trigger element comprise around the axis of said shaft like parts be spaced from each other at interval ground and with the parallel axes of said shaft like parts be arranged in a plurality of flat plate-shaped member on the said shaft like parts; Each of said plate-shaped member all has two axial ends that are fixed on integratedly respectively on said shaft like parts and the said case member, so that owing to the shear strain that in said plate-shaped member, causes in response to the relative displacement between said case member and said shaft like parts of said antagonistic force is detected by said strain test element.
The 13 aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer of said first aspect; (a) said a plurality of installation portion comprises two fixed installation portions that are arranged on the said mounting flange; Extend with the direction of the axis normal of said shaft like parts on the integrally formed and edge of said mounting flange and said case member; Said two fixed installation portions are separated from each other with predetermined subtended angle γ around the axis of said shaft like parts, and said load acceptance division comprises the installation portion that is fixed, and said fixed installation portion is fixed on the said installation portion that is fixed through predetermined anchor fitting integratedly; And (b) said subtended angle γ than said input load F owing to said pivot connecting portion along with the variable-angle β of the direction that changes of motion that is pivoted relative to each other that presses down of said operating pedal is big, thereby said two fixed installation portions are determined to be and make the direction of said input load F can be in the zone between said two fixed installation portions.
The 14 aspect of the present invention is characterised in that in the vehicle operating pedal device that is equipped with load transducer aspect the said the 13, said anchor fitting comprises screwed part.
The 15 aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer aspect the said the 13 or the 14; Said two fixed installation portions are set at the position about plane of symmetry G symmetry; Said plane of symmetry G is determined to be, and the said plane of symmetry G of midway location in the scope of the variable-angle β of the direction of said input load F comprises the axis of said shaft like parts.
The 16 aspect of the present invention is characterised in that; In aspect the said the 13 to the 15 in each the vehicle operating pedal device that is equipped with load transducer, said case member comprise with said strain trigger element integratedly all connecting portions in the bonded assembly, be configured in said connecting portion radial outside and around the periphery wall cylindraceous of said connecting portion, make said periphery wall and the interconnective integratedly tabular flange connector of said connecting portion and show the outward extending mounting flange in right angle greatly from an end of said periphery wall.
The 17 aspect of the present invention is characterised in that, in the vehicle operating pedal device that is equipped with load transducer aspect the said the 15, (a) said strain trigger element have hollow drum and with said shaft like parts concentric arrangement; (b) a plurality of said strain test elements are arranged in the predetermined angular range about said plane of symmetry G symmetry on the outer peripheral face or inner peripheral surface of said strain triggering element.
The tenth eight aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer aspect the said the 17, four said strain test elements be arranged on said plane of symmetry G and with plane that said plane of symmetry G vertically triggers the axis of element through said strain be boundary line and about four positions of said plane of symmetry G symmetry.
The 19 aspect of the present invention is characterised in that; In the vehicle operating pedal device that is equipped with load transducer aspect the said the 16; (a) said sensor installing component comprises plate-shaped member; Said plate-shaped member can be connected to said reaction member with respect to said reaction member pivotally around said connecting pin, and passes said plate-shaped member and be formed with the sensor mounting hole; (b) said load transducer is arranged in said sensor installing component; Under the side surface state of contact of said mounting flange and said sensor installing component, the periphery wall of said case member is inserted in the said sensor mounting hole and on its whole periphery, is provided with the gap; (c) said connecting pin inserts and stretches out towards two axial ends of said sensor mounting hole along the axis of said shaft like parts; And (d) said connecting pin has two axial ends that kept by the U-shaped clamp that is fixed on integratedly on the said reaction member.
The 20 aspect of the present invention is characterised in that; In aspect the said the 13 to the 19 in each the vehicle operating pedal device that is equipped with load transducer; Said strain triggering element has an end and the other end is fixed on the hollow cylinder configuration on said case member and the said shaft like parts respectively integratedly, so that because triggering the shear strain that causes in the element in said strain and being detected by said strain test element at the relative displacement between said case member and the said shaft like parts in response to said antagonistic force.
The of the present invention the 20 is characterised in that on the one hand; In aspect the said the 13 to the 16 in each the vehicle operating pedal device that is equipped with load transducer; Said strain trigger element comprise around the axis of said shaft like parts be spaced from each other at interval ground and with the parallel axes of said shaft like parts be arranged in a plurality of flat plate-shaped member on the said shaft like parts; Each of said plate-shaped member all has two axial ends that are fixed on integratedly respectively on said shaft like parts and the said case member, so that owing to the shear strain that in said plate-shaped member, causes in response to the relative displacement between said case member and said shaft like parts of said antagonistic force is detected by said strain test element.
The 22 aspect of the present invention relates to a kind of handling device that is equipped with load transducer of said first aspect, and it comprises the operating unit that (a) can be shifted by operation; (b) reaction member, said reaction member receive the operating effort of said operating unit and produce and the cooresponding antagonistic force of said operating effort; (c) at least one pivot connecting portion, said pivot connecting portion places between said operating unit and the said reaction member, a pair of constituent elements is relative to each other connected around connecting pin pivotly, and transmit said operating effort through said connecting pin; (d) load transducer of the said operating effort of electro-detection.
The said handling device of load transducer that is equipped with is characterised in that; (e) said load transducer comprises (e-1) shaft like parts; (e-2) case member of annular; Said case member is configured in the radial outside of said shaft like parts and around said shaft like parts, so that the direction of edge and the axis normal of said shaft like parts be shifted with respect to said shaft like parts, (e-3) is configured between said shaft like parts and the said case member with the strain triggering element across them; (e-4) be fixed on said strain and trigger the strain test element on the element; (e-5) wherein, said antagonistic force makes the direction of said shaft like parts and said case member edge and the axis normal of said shaft like parts relative to each other move and makes said strain trigger deformed element, thereby said strain test element detects the distortion that said strain triggers element; (f) said case member is configured on the sensor installing component; Said sensor installing component is made up of in the interconnective said constituent elements of the said connecting pin in said pivot connecting portion any, and said shaft like parts is connected in the said constituent elements another through said connecting pin; (g) said case member have respectively be formed on said sensor installing component on a plurality of installation portions of engaging of a plurality of load acceptance divisions, and be configured in the said sensor installing component with fixing attitude location; Even and (h) triggering the direction of input load F that element is delivered to said case member because said pivot connecting portion when changing relatively through said strain along with being pivoted relative to each other motion of displacement of said operating unit from said shaft like parts, said a plurality of load acceptance divisions also support said input load F through said a plurality of installation portions all the time.
Various aspects of the present invention have the advantageous effects that is described below.The vehicle operating pedal device that is equipped with load transducer for first aspect present invention; Can operate and be installed on the pivot connecting portion of predetermined sensor installing component, the operating effort that transmits with the connecting pin that detects through the pivot connecting portion based on the load transducer of the operation incoming call detecting operation power of the case member of relative displacement and shaft like parts.Therefore, in the sensor installing component, forming the sensor mounting hole is installed in the authorized load sensor and wherein makes device can form simple on the whole and compact design.In addition, because this structure can be used and peripheral components identical in the device with pedal of conventional apparatus, for example bar and U-shaped clamp etc. can form low-cost configuration so install.
Said a plurality of installation portions respectively be formed on the sensor installing component in the said a plurality of load acceptance divisions state that keeps engaging under, case member with the attitude location and installation of fixing in the sensor installing component.In addition; Even from shaft like parts through strain trigger element be delivered to case member input load F direction since the pivot connecting portion along with operating pedal press down be pivoted relative to each other motion and when changing relatively, said a plurality of load acceptance divisions are also all the time through said a plurality of installation portions supporting input load F.This flexural deformation that produces owing to stress concentration with case member reduces to minimum.
This has prevented that strain from triggering element and standing by the reducing of the caused distortion of not expecting of the flexural deformation of case member or deflection (strain value), thereby has improved the accuracy of detection of operating effort.In addition, with the contrast of situation that adopts the less high strength material that occurs bending and deformation or employing large scale case member, device can form the lighter and lower structure of cost of weight.
Even the direction of input load F is owing to the be pivoted relative to each other motion that press down of pivot connecting portion along with operating pedal changes, input load F also can be supported by said a plurality of load acceptance divisions through said a plurality of installation portions all the time.Like this, load transducer can remain fixing position and attitude, thereby needn't worry in the cylindrical shell parts, to understand the reduction of the operating effort accuracy of detection that causes owing to its swing displacement.In addition, case member has minimum flexural deformation.Like this, even the direction of input load F changes, only can cause that also strain triggers the change of the deformation position of element, and can not produce complicated distortion pattern, thereby suppress the variation of deformation values.As a result, F remains under the situation of stationary state in input load, and the direction of strain triggering element and input load F changes the strain value of the level that irrespectively has the basic fixed of remaining.This makes that load transducer can have the stable detection precision and reliability improves in the actual pedal operation that input load F increases gradually.
The case member of load transducer has fully and remains said a plurality of installation portions and the said a plurality of load acceptance division that is bonded with each other.This has improved the assembling performance of load transducer.In addition, when load transducer being assembled in the sensor installing component, other zone except that said installation portion and said load acceptance division of sensor installing component need not to form with high dimensional accuracy.This has reduced the required form accuracy of parts, thereby manufacturing cost is reduced.
For second aspect of the present invention; Load transducer comprises the case member with said a pair of flat attachment face; Said a pair of flat attachment face with predetermined apex evagination be formed in the plane with the axis normal of shaft like parts, and carry out face and contact by putting face with a pair of flat of sensor installing component respectively.Through this structure, load transducer can be with fixing attitude location.In addition; Even from shaft like parts through strain trigger element be delivered to case member input load F direction since the pivot connecting portion along with operating pedal press down be pivoted relative to each other motion and change relatively, input load F also can be all the time through said a pair of attachment face by said a pair of by putting surface bearing.This generation with the distortion that is caused by stress concentration of case member reduces to minimum.As a result, this has prevented that strain from triggering the caused distortion of not expecting of the distortion by case member of element or reducing of deflection (strain value), thereby has improved the accuracy of detection of operating effort.In addition, have the situation of less diastrophic high strength material or the another kind of contrast of employing large scale case member with employing, device can form with lighter weight and lower cost.
Pass through the third aspect of the invention; Define a kind of so concrete state; That is, though in the direction of input load F since the pivot connecting portion when changing, import along with the motion that is pivoted relative to each other that presses down of operating pedal load F also all the time through said a pair of attachment face by said a pair of by putting surface bearing.This state is according to limiting by the orientation and the apex of putting face.
Through fourth aspect of the present invention; Orientation and apex by putting face are defined as such state; Make said a pair of attachment face in response to being applied to the antagonistic force on the said a pair of attachment face and producing all the time component by putting face towards the summit of protruding profile from said, and no matter the variation of input load F.This prevented these two kinds of constituent elementss be independent of between them friction force and relative to each other the motion.This has improved the position that prevents load transducer and has moved the reliability that changes with attitude, thereby has improved accuracy of detection, so as input load F can be all the time through said a pair of attachment face by said a pair of by putting surface bearing.
For the 5th aspect of the present invention, apex is selected to than (180 °-β) little of the angles relevant with the variable-angle β of the direction of importing load F.This prevented attachment face and by put face be independent of between them friction force and relative to each other the motion.Like this, input load F can be all the time a pair ofly supported by putting face by said through said a pair of attachment face reliably.As a result, can further avoid the position of load transducer to move and the attitude variation reliably, thereby improve accuracy of detection.
For the 6th aspect of the present invention, said a pair of attachment face is arranged to the symmetry about neutral surface S.Therefore; Design and saidly become easily by the orientation of putting face etc., even so that in the direction of input load F because the pivot connecting portion is said when changing along with the motion that is pivoted relative to each other that presses down of operating pedal a pair ofly also can support through said a pair of attachment face all the time and import load F by putting face.For example, can be designed to make by the orientation of putting face and overlap basically at direction and the neutral surface S of the intermediate point input load F that presses down stroke of operating pedal.This makes that the direction of input load F can be roughly to change about the central symmetrical manner of neutral surface S.If suitably confirm apex, then import load F and can be preferably change irrespectively all the time through said a pair of attachment face and a pair ofly suitably support by putting face by said with its direction.
For the 14 aspect of the present invention, confirm that suitably plane of symmetry G can obtain and the identical advantageous effects in the 6th aspect of the present invention.
For the 7th aspect of the present invention, case member has double-layered cylinder shape structure, and this structure has connecting portion, periphery wall and flange connector, and wherein the outer surface of periphery wall has the said a pair of assembly wall portion that forms said a pair of attachment face.Therefore, device can form structure in light weight and that cost is low.On the contrary, said a pair of assembly wall portion is easy to take place relative deformation when receiving input load F.But, because said parallel walls portion forms with said assembly wall portion continued access ground, thus the rigidity of periphery wall increase, thereby can suitably minimum be reduced in the distortion of assembly wall portion.
Among each zone of periphery wall, the remainder except assembly wall portion of periphery wall and sensor installing component separate a little gap.This can be easily positioned on case member in the sensor installing component, makes that the lateral wall of assembly wall portion is that attachment face contacts by putting the reliable ground of face with the said a pair of of sensor installing component.Through this structure, input load F can only be supported by assembly wall portion, thereby one obtains high accuracy of detection surely.
For eight aspect of the present invention, the strain with hollow cylindrical configuration triggers arrangements of components and becomes concentric with shaft like parts.In this case, a plurality of strain test elements are being arranged on the periphery or inner peripheral surface of strain triggering element about neutral surface S on the predetermined angular range symmetrically.Therefore, can use advantageously detecting operation power such as bridgt circuit.Especially, when said a plurality of strain test elements are arranged in the both sides of neutral surface S and be in the zone spaced apart from each other symmetrically, can come the stroke that presses down of detecting operation pedal based on the variation of the signal (strain value) of the strain test element that places both sides.
An embodiment of this situation is represented in the 9th aspect of the present invention, and wherein said a plurality of strain test elements are arranged in the both sides of neutral surface S symmetrically.The of the present invention the 17 can realize having the identical advantageous effects with the 8th and the 9th embodiment through symmetrical surface suitably is set basically with the tenth eight aspect.
For the tenth aspect of the present invention, can become sensor installing component with respect to the unit architecture that reaction member be connected to reaction member pivotally as the installed load sensor around the axis of connecting pin.Therefore, load transducer can detect the operating effort (output) that is delivered to reaction member from connecting pin on terminal stage.For example, when attempting when reaction member mechanically activates hydraulic operation brake etc., load transducer can be with the consequent braking force of high Precision Detection.In addition, case member is configured in the sensor mounting hole that is formed in the sensor installing component.Connecting pin and shaft like parts extend and stretch out from two axial side of sensor mounting hole along the axis of shaft like parts with one heart, and have the two ends that kept by U-shaped clamp.Therefore, load transducer can not produce any rotating torque with the accuracy detection operating effort of further raising as reversing etc. on load transducer.
The 19 aspect of the present invention has and the identical advantageous effects in the tenth aspect of the present invention basically.
For the 12 aspect of the present invention, said a plurality of flat plate-shaped members are installed on the shaft like parts to trigger element as strain in the axis of said shaft like parts is making progress zone spaced apart from each other week.Quantity and the position of suitably confirming said a plurality of flat plate-shaped member to be arranged make input load F to concentrate and act on the plate-shaped member.This can trigger element than the strain that forms cylindric configuration and obtain bigger shear strain, thereby improves sensitivity and accuracy of detection.
The of the present invention the 20 has and the identical advantageous effects in the 12 aspect of the present invention on the one hand basically.
For the load transducer of the present invention the 13 aspect, the mounting part that is arranged on the mounting flange at two positions spaced apart from each other and case member with subtended angle γ is fixed on the installation portion that is fixed of sensor installing component two positions through anchor fitting with being integral integratedly.In this case, subtended angle γ be selected to than input load F's since the pivot connecting portion along with operating pedal press down be pivoted relative to each other motion and the variable-angle β of variable direction is big.In addition, placing two fixed installation portions of said two positions to be determined to be makes the direction of input load F be in all the time in the zone between said two fixed installation portions.This makes input load F to be supported by the sensor installing component through the fixed installation portion that places two positions respectively and the installation portion that is fixed all the time, thereby the distortion that case member produces owing to stress concentration is reduced to minimum.As a result, this has prevented that strain from triggering the caused distortion of not expecting of the distortion by case member of element or reducing of deflection (strain value), thereby has improved the accuracy of detection of operating effort.In addition, with employing have the distortion of less deflection high strength material situation or adopt the another kind of contrast of large scale case member, device can be with lighter weight and lower cost formation.
A pair ofly look like under the situation that such mutual face contacts in second aspect present invention by putting with said at said a pair of attachment face, because the error of dimensional discrepancy and installing condition, case member possibly produce deflection against engaging or the attitude variation.Attitude changes can cause the worry that the operating effort accuracy of detection is reduced.But; Through the 13 aspect of the present invention; Owing to place the fixed installation portion of two positions to be fixed on integratedly on the installation portion that is fixed, so case member can be in fixing attitude all the time with respect to the sensor installing component through anchor fitting such as screwed part etc.As a result,, accuracy of detection obtained high reliability under keeping stable situation.
For the 14 aspect of the present invention,, can form the structure that cost further reduces so install because fixed installation portion is connected on the installation portion that is fixed through the anchor fitting that is made up of screwed part integratedly.
As visible, the invention is not restricted to the vehicle operating pedal device, but also can be applicable to various other handling device, for example operating pedal device except that vehicles and hand-operating device etc. from the 22 aspect of the present invention.But load transducer has the structure and layout structure identical with first aspect of the present invention, and has substantially the same advantageous effects with first aspect of the present invention.First aspect of the present invention can be counted as an embodiment of the present invention the 22 aspect, and operating pedal is corresponding to operating unit.
Except the form of above-mentioned various aspects of the present invention, the present invention can also implement with other following form.Although the present invention preferably is applied to the brake pedal apparatus used always, also can be applicable to the handling device of accelerator and Parking (braking) usefulness.The 22 aspect of the present invention can be applicable to various handling device, for example the operating pedal device of the mobile object of other except that vehicle and manually operated handling device.
Reaction member by the control lever of for example brake servo unit, the push rod that is configured to mechanically to operate the master brake cylinder of car side brake etc. constitutes.But the present invention can be applicable to according to automatically controlled (employing line control system) operate brake of being come electrically to control car side brake or actuating device etc. by the detected operating effort of load transducer.In this case, stroke simulator or counteraction mechanism etc. are connected to reaction member to apply predetermined antagonistic force to it.
Operating pedal and reaction member can directly interconnect through single connecting pin.In this case, preferably use relevant connecting portion and operating pedal as pivot connecting portion and sensor installing component.In addition, the intermediate bar that is pivotably mounted on the pedal support can interconnect through being connected STATEMENT OF FEDERALLY SPONSORED with operating pedal, and intermediate bar can be connected through connecting pin with reaction member with being pivoted relative to each other.In this case, between the connecting portion between intermediate bar and the reaction member, between connect between STATEMENT OF FEDERALLY SPONSORED and the intermediate bar connecting portion and between connecting connecting portion between STATEMENT OF FEDERALLY SPONSORED and the operating pedal respectively all corresponding to the pivot connecting portion.Load transducer is installed on any in these pivot connecting portions with detecting operation power.Owing to also act on and to support pivotally on the connecting portion of operating pedal around the axis of support shaft with the cooresponding antagonistic force of operating effort, so load transducer can be installed on this pivot connecting portion to be used for detecting operation power.
The strain that load transducer is used to use strain test element to come electro-detection to stand the strain triggering element of elastic deformation produces.Detected then strain is converted into load based on predetermined arteries and veins spectrogram and computing formula, i.e. operating effort.Although strain test element can preferably be made up of the semiconductor strain gauge of strain resistance element such as film type or thick film type or strain gage commonly used etc., strain test element also can preferably be made up of other element such as piezoelectric element or component of piezoelectric conversion etc.
Although load transducer is installed in and is formed in the for example tabular sensor installing component and from the sensor mounting hole of its perforation, load transducer also can be installed in a side of sensor installing component.In addition, connecting pin is configurable in shaft like parts and for example pass along its axis.But, can make various modifications and variation so that shaft like parts and connecting pin form all-in-one-piece structure to these constituent elementss; And shaft like parts separates with connecting pin and mechanically connect each other as being connected STATEMENT OF FEDERALLY SPONSORED etc. through link gear.
For the load transducer of second aspect present invention, the said a pair of attachment face of case member is arranged to a pair ofly keep in touch by putting face with said, so that input load F can be through said attachment face by said a pair of by putting surface bearing.Because input load F, said attachment face is pressed against said by putting on the face respectively.Therefore, attachment face and can assemble each other with mode like this through disposable operation by putting face promptly, uses spring members such as leaf spring etc. that attachment face is pressed against respectively and need not to prepare strong anchor fitting by putting on the face.In addition, these constituent elementss can use anchor fitting such as bolt etc. to interfix integratedly as required.
For example as the of the present invention the 8th and the 17 aspect, strain triggers element can suitably have cylindric configuration.But strain triggers element also can have other shape, for example forms the elliptical shape of the circular arc configuration that at least a portion zone is out of shape based on the relative displacement between for example shaft like parts and the case member.Strain triggers element and places such position, makes that tensile deformation or flexural deformation are stood in the zone of circular shape when tensile load or clamp load are applied on the two ends of circular arc configuration.
Can use form and shaft like parts and case member between the strain of the cooresponding circular configuration of annular space trigger element, said strain triggers element and stands tensile deformation, compressive deformation or flexural deformation based on the relative displacement between shaft like parts and the case member.In addition, as described in the of the present invention the 12 and the 20 one side, through a plurality of flat plate-shaped member of employing in axis places zone spaced apart from each other, strain triggers element and can realize with various other forms.
For the 5th aspect of the present invention, apex be determined to be less than use with the angle of the variable-angle β of the directional correlation of input load F (180 °-β).But among the antagonistic force that acts on the said a pair of attachment face, the component that points to the summit increases along with reducing of apex, makes strain triggering element be easy in response to stress concentration deflection to take place and is out of shape.Therefore, apex is preferably confirmed as greater than 60 °, more preferably greater than 80 °.
For the 6th aspect of the present invention, said a pair of attachment face is positioned to the symmetry about neutral surface S.But as long as can obtain the operating effect of expection, then said a pair of attachment face can be at the permissible range bias internal to a certain degree.When the others of embodiment of the present invention, said a pair of attachment face can be placed in non-symmetrical position certainly.When said a pair of attachment face is positioned to about neutral surface S symmetry; The sensor installing component can have such by putting face, and said direction and the neutral surface S that is specified to the intermediate point input load F that presses down stroke that for example makes at operating pedal by the orientation of putting face roughly overlaps.
In addition, for the structure that is configured to roughly overlap at the maximum direction that presses down near the input load F stroke terminal of input load F and neutral surface S, the maximum that is caused input load F can be with the ratios diverge of roughly equilibrium to said a pair of attachment face.Like this, can suitably confirm by putting the orientation of face.
For the 7th aspect of the present invention, periphery wall has in parallel to each other the said pair of parallel wall portion of extending and said a pair of assembly wall portion.Parallel walls portion has the other end, the promptly relative other end with assembly wall portion, and the said other end interconnects through the rear wall parts that forms suitable shape such as circular shape or curve shape etc.Making rear wall parts form flat shape perpendicular to parallel walls portion makes case member integral body can form the pentagonal home base shape that is roughly in the baseball.
When the others of embodiment of the present invention, parallel walls portion need not be set, also can be implemented as with various modifications and variation, make periphery wall have the partly local and formation connecting portion that extend in all zones fully inwardly.
For eight aspect of the present invention, said a plurality of strain test elements for example, are installed in strain in the both sides of neutral surface S and trigger on the element being installed in symmetrically on the strain triggering element about neutral surface S on the predetermined angular range in zone spaced apart from each other.But, in the configurable zone in predetermined angular range of strain test element so that can be positioned at middle position with the intersection point of neutral surface S, and can with two crossing a pair of strain test elements of position configuration of neutral surface S.
In this case, strain test element can preferably be arranged in the direction that comprises input load F variable-angle β gamut than in the polarizers of big angle scope.The a plurality of strain test elements that are arranged in the zone spaced apart from each other along the direction of neutral surface S needn't be configured in the angular range that is equal to each other, and can have the relation about neutral surface S symmetry.
When the others of embodiment of the present invention, said a plurality of strain test elements need not be arranged symmetrically with respect to neutral surface S, and can suitably confirm the layout pattern of strain test element.For the 17 aspect of the present invention, through confirming to have with respect to input load F the plane of symmetry G of the position relation identical with neutral surface S, strain test element can have the placement position with respect to plane of symmetry G of mode same as described above.
For the of the present invention the 9th and the tenth eight aspect, amount to four positions of four strain test elements on the both sides of neutral surface S or plane of symmetry G be provided with symmetrically with being spaced from each other about neutral surface S or plane of symmetry G.
When the others of embodiment of the present invention, said a pair of strain test element can with location arrangements roughly the same when said a pair of attachment face forms about neutral surface S or the plane of symmetry G symmetrically zone around strain triggers the axis of element in.Have only through this layout, just can detect the operating effort of operating pedal and press down stroke.
For the of the present invention the 11 and the 20 aspect, strain triggers element and forms cylindric configuration.An axial end of cylindric configuration is separately fixed on case member and the shaft like parts with another axial end, to produce shear deformation under the situation that relative displacement takes place between them.But the regional area that strain cylindraceous triggers element can be fastened on the case member in the position around its line of centers fully, makes shaft like parts extend through the inside that strain triggers the cylindric configuration of element.In this case, strain test element is by triggering the stretcher-strain that in element cause at the relative displacement that produces between case member and the shaft like parts in strain because of antagonistic force.
When the 12 and the 20 one side of embodiment of the present invention, said a plurality of plate-shaped members are arranged in a plurality of positions about for example neutral surface S or plane of symmetry G symmetry.More specifically, amount to four fuel plates be arranged on for example neutral surface S or plane of symmetry G with vertically be the boundary line and become in four zones that symmetric position concerns in the plane of the axis through shaft like parts with neutral surface S about neutral surface S or plane of symmetry G.But said a plurality of plate-shaped members also can otherwise be arranged.Although four all plate-shaped members all can have strain test element, have only the part in the said plate-shaped member fully to have strain test element.
For the 13 aspect of the present invention, as in second aspect of the present invention for example, case member at two fixed installation portions places through anchor fitting such as bolt etc. fully one be fixed on the sensor installing component.This makes at said a pair of attachment face and saidly a pair ofly can be formed with predetermined gap by putting between the face.Perhaps, can use the load transducer 204 shown in Figure 21 A and the 21B intactly.In this case; Sensor mounting hole 202 forms large scale; On whole periphery, to form the gap; And stretch out forming two fixed installation portions in two desired locations locating flange 208d part, and said fixed installation portion is fixed on the sensor installing component (operating pedal 16) by bolt etc. integratedly.That is to say that as long as between sensor mounting hole and case member, be formed with predetermined gap, then sensor mounting hole and case member can have arbitrary shape.
For the 13 aspect of the present invention, said two fixed installation portions can be arranged on the case member case member presses the sensor installing component in response to the input load F that is applied position in two zones of the axis of shaft like parts.With the for example attachment face in second aspect of the present invention and the same by the layout of putting face, this position is the downstream position on the direction of input load F.But, said two fixed installation portions also can with the downstream area region facing promptly the upstream region on input load F direction be arranged on the case member.
For the 14 aspect of the present invention, can use screwed part as anchor fitting.But, also can adopt and can case member be fixed on various other anchor fittings on the sensor installing component integratedly, comprise spot welding etc.
Description of drawings
Figure 1A and 1B are the front elevations that an embodiment who has used the vehicle operating pedal device that is used for service brake of the present invention is shown.Figure 1A illustrates operating pedal and is in the state that presses down the stroke intermediate point, and Figure 1B illustrates operating pedal and is in another state that presses down stroke terminal point.
Fig. 2 is the front elevation that the load transducer of the embodiment shown in Figure 1A and the 1B is shown with the amplification form.
Fig. 3 A and 3B are the cutaway views that the pivot connecting portion of a part that forms Figure 1A and 1B illustrated embodiment is shown.Fig. 3 A is the longitudinal section along neutral surface S intercepting of pivot connecting portion, and Fig. 3 B is the cutaway view along the line IIIA-IIIA intercepting of Fig. 3 A.
Fig. 4 A and 4B illustrate the being applied in cutaway view that the strain that shear deformation takes place with input load F triggers element that remains under the state shown in Fig. 3 A and the 3B.Fig. 4 A is the longitudinal section along neutral surface S intercepting of pivot connecting portion, and Fig. 4 B is the cutaway view along the line IVA-IVA intercepting of Fig. 4 A.
Fig. 5 A amplifies the cutaway view that strain triggering element among Fig. 4 A is shown; Fig. 5 B is the birds-eye view that the strain of looking of the upper area from Fig. 5 A triggers element; Fig. 5 C is used to illustrate the expansion drawing that the strain that is installed in the strain test element on its outer surface triggers element.
Fig. 6 illustrates the circuit diagram that the strain test element shown in Fig. 5 C is connected into the bridgt circuit of conducting channel pattern.
Fig. 7 A, 7C and 7B, 7D are the views of operation that the load transducer of Figure 1A and 1B illustrated embodiment is shown.Fig. 7 A and 7C illustrate the load transducer under the no load state, and Fig. 7 B and 7D illustrate the load transducer that is under the state that is applied with input load.
Fig. 8 A and 8B are the views that the transmit mode of the power on the load transducer that is applied to Figure 1A and 1B illustrated embodiment is shown.Fig. 8 A illustrates and presses down the load transducer of stroke when being in intermediate point, and Fig. 8 B illustrates the load transducer that is under the further pressed status.
Fig. 9 A and 9B illustrate the view of situation that the present invention is applied to have the vehicle operating pedal device of intermediate bar.Fig. 9 A and 9B correspond respectively to Figure 1A and 1B.
Figure 10 is the view that another example of load transducer is shown, and is the front elevation corresponding to Fig. 2.
Figure 11 is the view that is illustrated in the variation characteristic of the strain value that is symmetricly set on a pair of strain test element on the neutral surface S both sides in the load transducer shown in Figure 10.
Figure 12 A and 12B are the views that the circuit of load transducer shown in Figure 10 is shown.Figure 12 A is the expansion drawing corresponding to Fig. 5 C, and the strain test element on the outer surface that is installed in strain triggering element is shown, and Figure 12 B is the circuit diagram corresponding to Fig. 6.
Figure 13 A and 13B are the views corresponding to Fig. 3 A and 3B, are used to illustrate another embodiment of load transducer.Figure 13 A is the longitudinal section along neutral surface S intercepting of load transducer, and Figure 13 B is the cutaway view along the line XIIIA-XIIIA intercepting of Figure 13 A.
Figure 14 A and 14B illustrate to remain on being applied in input load F under the state shown in Figure 13 A and the 13B and make strain trigger the cutaway view that element generation tensile deformation becomes the load transducer of oval in configuration.Figure 14 A is the longitudinal section along neutral surface S intercepting of load transducer, and Figure 14 B is the cutaway view along the line XIVA-XIVA intercepting of Figure 14 A.
Figure 15 A and 15B are the views that another example of load transducer is shown.Figure 15 A is the front elevation corresponding to Fig. 2 A, and Figure 15 B is the transparent view that shaft like parts and plate-shaped member are shown.
Figure 16 A and 16B illustrate the view that the load transducer 100 shown in Figure 15 A and the 15B and the comparison of load transducer shown in Figure 10 have improved the effect of detection sensitivity.Figure 16 C illustrates with single-point line strain that draw and the load transducer 100 shown in Figure 16 A and triggers the relevant figure line of element 32.
Figure 17 is the transparent view corresponding to Figure 15 B of Figure 15 A and 15B illustrated embodiment, and wherein a pair of strain test element is installed on the single plate of plate-shaped member.
Figure 18 A and 18B are the views that another example of load transducer is shown.Figure 18 A is the transparent view that near the load transducer in sensor installation region is shown, and Figure 18 B is the cutaway view along the line XVIIIA-XVIIIA intercepting of Figure 18 A.
Figure 19 A and 19B are the views that the load transducer shown in Figure 18 A and the 18B is shown.Figure 19 A is the birds-eye view of the load transducer of looking of the upper area from Figure 18 B, and Figure 19 B is the upward view of the load transducer of looking from opposite lower zone.
Figure 20 A and 20B illustrate the view that the detection performance of the load transducer shown in Fig. 3 A and the 3B possibly change.Figure 20 A illustrates the state of the installation attitude generation displacement of case member, and Figure 20 B illustrates the another kind of state against joint that produces deflection owing to the scale error of configuration.
Figure 21 A and 21B are the views that background technology of the present invention is shown.Figure 21 A is the front elevation that is equipped with the vehicle operating pedal device of load transducer, and Figure 21 B is the amplification view along the line XXIA-XXIA intercepting of Figure 21 A.
Figure 22 A, 22C and 22B, 22D are the views that the operation of the load transducer shown in Figure 21 A and the 21B is shown.Figure 22 A and 22C illustrate the load transducer that is in no load state, and Figure 22 B and 22D illustrate the load transducer that is in the state that is applied with load.
Figure 23 A and 23B are the views that the transmit mode that is applied to the power on the load transducer shown in Figure 21 A and the 21B is shown.Figure 23 A illustrates the load transducer that is in the state that presses down the stroke intermediate point, and Figure 23 B illustrates the load transducer that is under the further pressed status.
The specific embodiment
Now, with each embodiment that present invention will be described in detail with reference to the accompanying hereinafter.
< embodiment 1 >
Figure 1A and 1B are the views that the operating pedal device according to an embodiment of the invention 10 of the car brake that is used to use always is shown.Figure IA illustrates the operating pedal 16 that is in the state that is pressed down to the intermediate point that presses down stroke, and Figure 1B illustrates another state at the terminal that further being depressed into of operating pedal 16 press down stroke.The 10 expression the present invention of vehicle operating pedal device are applied to the situation of the operating pedal device 200 shown in Figure 21 A and the 21B.Operating pedal 16 is formed with and is used for load transducer 30 is installed in sensor mounting hole 28 wherein.
As above-mentioned load transducer 204, load transducer 30 has wire harness 56, and wire harness 56 has the end that is connected to joint 58, and wire harness 56 is connected to the control circuit part of vehicle through joint 58.Operating pedal device 10 is corresponding to handling device required for protection, and operating pedal 16 is corresponding to sensor installing component required for protection.
Fig. 2 and Fig. 3 A, 3B are the views of detailed structure that load transducer 30 and the sensor mounting hole 28 of present embodiment are shown.Fig. 2 is the amplification front elevation corresponding to the structure of Figure 1A and 1B, the view of the structure of promptly looking from the lower area of Fig. 3 A.Fig. 3 A is the cutaway view along the neutral surface S intercepting among Fig. 2 of operating pedal, and Fig. 3 B is the cutaway view along the line IIIA-IIIA intercepting of Fig. 3 A.Load transducer 30 comprises that strain cylindraceous triggers element 32, is installed in the case member 34 of the annular on the outer regions that strain triggers element 32 and is arranged on strain and triggers the inboard shaft like parts 36 of element 32, radially is applied to strain and triggers the load on the element 32 to be used to detect.
Case member 34 comprises connecting portion 60, periphery wall 62, flange connector 64 and the locating flange 66 that forms two cylindrical structures on the whole.That is to say that the axial end (upper end that the strain of looking from Fig. 3 A triggers element 32) that strain triggers element 32 is fixed to the connecting portion 60 that places in the zone of interior week integratedly through force fit or welding etc.Periphery wall 62 extends in outer regions to center on connecting portion 60.Forming tabular flange connector 64 interconnects connecting portion 60 and its periphery wall 62 integratedly.Locating flange 66 forms with flange connector 64 adjacency radially towards the structure of giving prominence to away from the zone of periphery wall 62.
When periphery wall 62 when locating flange 66 is assemblied in the sensor mounting hole 28 under the state that engages with a sidewall of operating pedal 16, periphery wall 62 partly is pressed against on the inner wall surface of sensor mounting hole 28 by means of (not shown) such as anchor fitting such as leaf springs.Like this, case member 34 can remain on fixing attitude on the operating pedal 16 and not from its disengaging.
Shaft like parts 36 keeps strain to trigger another axial end (from the bottom that Fig. 3 A looks) of element 32 through force fit or welding etc. integratedly, and has the patchhole 38 that is formed with 26 insertions of confession rod pin along the axis zone.Rod pin 26, patchhole 38 and U-shaped clamp 24 shells are pivoted relative to each other so that the related elements that friction force reduces is pivoted relative to each other along with operating pedal 16 presses down.In order to reduce friction, can insert bearing, lining etc. as required.
Now, input load " F " radially promptly being applied to the situation that triggers on interconnective in the above described manner case member 34 of element 32 and the shaft like parts 36 through strain along the direction perpendicular to line of centers " O " from the outside describes.
When the input load " F " that is applied is zero; Shown in Fig. 2 and Fig. 3 A, 3B; The axis " Q " of shaft like parts 36 and rod pin 26 keeps being in the state with line of centers " O " essentially concentric of load transducer 30, and strain triggers element 32 and under the situation that Center-to-Center line " O " is aimed at, on whole length, remains hollow cylindrical.The line of centers of load transducer 30 " O " expression is installed in the line of centers of the case member 34 on the operating pedal 16 integratedly, more specifically representes the line of centers of connecting portion 60 cylindraceous.
Simultaneously, owing to the antagonistic force that press down of control lever 22 along with operating pedal 16, load " F " radially is applied between case member 34 and the shaft like parts 36.So shown in Fig. 4 A and 4B, the case member 34 that links with operating pedal 16 is along more with respect to shaft like parts 36 displacements, making strain trigger element 32 generation shear deformations near the direction of control lever 22 (direction left of looking from Fig. 3 A and 3B).
, between case member 34 and shaft like parts 36, be provided with annular space here, allow strain to trigger element 32 simultaneously shear deformation takes place to allow the radially relative to each other displacement of these two constituent elementss.In addition, strain triggering element 32 is processed by metallic material that elastic deformation can take place when receiving the load of radially effect such as ferritic stainless steel with excellent formability etc.Therefore, along with operating pedal 16 is pressed down gradually, can produce the operating effort that makes strain trigger element 32 generation shear deformations.
Fig. 4 A and 4B are the views that corresponds respectively to Fig. 3 A and 3B, and wherein Fig. 4 B is the section along the line IVA-IVA intercepting of Fig. 4 A.In fact, strain triggers the minimum deflection that element 32 stood and can the stroke that press down of operating pedal 16 not had a negative impact basically.But, in Fig. 4 A and 4B, show deflection for the ease of understanding with amplifying.In the figure of back also is like this.
To trigger the shear strain that produces in the element 32 in order detecting, shown in Fig. 5 A and 5B, on the outer peripheral face of strain triggering element 32, four strain resistance element 40a to 40d to be installed as strain test element in strain.The example of strain resistance element can preferably include, for example, and the semiconductor strain gauge of film-type or thick-film type and commonly used strain gage etc.Fig. 5 A illustrates and the corresponding state of state shown in Fig. 4 A, and wherein strain triggers element 32 generation shear deformations; Fig. 5 B illustrates the birds-eye view that the strain of looking from the upper area of Fig. 5 A triggers element 32; Fig. 5 C illustrates the expansion drawing that strain triggers the outer peripheral face of element 32.
Said four strain resistance element 40a to 40d are installed in strain and trigger on the element 32 in two symmetrical regions, along the direction that when receiving external load, makes strain trigger element 32 generation shear deformations line of centers " O " (Q) is clipped in the middle.In each of said two symmetric positions, two strain resistance elements are placed in position spaced, produce tensile deformation or compressive deformation vertically thereby the shear strain of strain resistance element 40a to 40d makes strain trigger element 32.
Four strain resistance element 40a to 40d are connected into conductive pattern 50 (seeing Fig. 5 C) just form bridgt circuit shown in Figure 6.Conductive pattern 50 has current electrode 42 and GND (ground connection) electrode 44, between these two electrodes, is connected with power supply E.Electric signal is exported from a pair of output electrode 46 and 48 with the amount or the value that depend on strain level.For power supply E is connected to current electrode 42; And in order to draw from the electric signal of output electrode 46 and 48 outputs; Wire harness 56 (see figure 1)s are connected to said electrode, and wire harness 56 extends out so that be connected to the control circuit part of vehicle through joint 58 from load transducer 30.
The periphery wall surface that strain triggers element 32 has been pre-formed dielectric film 52 (seeing Fig. 5 C) like the glass paste etc., and conducting channel pattern 50 uses conductive material such as silver etc. to be formed on the dielectric film 52.In addition, strain resistance element 40a to 40d is through be formed on the dielectric film 52 sintering integratedly and partly be electrically connected to conducting channel pattern 50.In addition, in load transducer 30 in-to-in zones, the control circuit part can be set.
What adopt in the embodiment shown is full-bridge circuit.But,, also can adopt half-bridge circuit when strain triggers that element only for example is used for based on the operating effort of operating pedal 16 and the regional area of bearing load when forming the structure of circular shape.
When operating pedal 16 along with being pressed down when support shaft 14 pivots, both also are pivoted relative to each other control lever 22 and operating pedal 16 around the axis of rod pin 26.Like this, the direction that is applied to the input load " F " on the load transducer 30 from rod pin 26 triggers the variation of the position that element 32 deforms along with strain and changes.
The size of strain resistance element 40a to 40d and position etc. are determined to be and can change the detection performance that irrespectively obtains basic fixed with the direction of input load " F ".That is to say that the length dimension of strain resistance element triggers circumferentially can covering than the big predetermined angular range (see figure 2) of variable-angle β about the direction of input load " F " of element 32 along strain, has the configuration about neutral surface S symmetry simultaneously.
Neutral surface " S " is the plane of the line of centers " O " that comprises load transducer 30, and it is so definite, promptly overlaps with neutral surface " S " basically in the intermediate point input load " F " that presses down stroke.Input load F is from changing and pass neutral surface S with changing and arrive opposite acting another state of direction in edge along the acting initial condition of a direction on the left and right sides that is in neutral surface S in the zone of line of centers " O ".
The periphery wall 62 of case member 34 has a pair of flat 62a of assembly wall portion and 62b, and they are assembled each other with predetermined apex and in the plane surface perpendicular to the axis Q of shaft like parts 36, limit protruding profile, shown in Fig. 2 and Fig. 3 B.62a of assembly wall portion and 62b have the lateral wall as attachment face.Sensor mounting hole 28 has a pair of flat by putting face 28a and 28b, and they are assembled with the recessed profile identical with the apex of 62a of assembly wall portion and 62b each other.
As visible from Fig. 2; Case member 34 is positioned at wherein with fixing attitude to be installed in to the state that presses down in the sensor mounting hole 28 by means of anchor fitting such as leaf spring etc., so as to make the said a pair of flat 62a of assembly wall portion and 62b respectively with said a pair of flat contacting with the 28b face by putting face 28a.Fig. 2 is the view that load transducer 30 is shown from looking with the opposite front side shown in Fig. 3 B, and it is shown in the flat 62a of assembly wall portion and 62b is opposite about the aspect, position, the left and right sides of neutral surface " S ".Flat 62a of assembly wall portion and 62b be corresponding to installation portion required for protection, and be flat by putting face 28a and 28b corresponding to load acceptance division required for protection.
The orientation and the apex by putting face 28a and 28b of sensor mounting hole 28 are so definite; Even the direction of feasible input load F is pressed down along with operating pedal 16 and in the scope of variable-angle β, changes, said a pair of assembly wall 62a of portion and 62b also are compressed against by putting on face 28a and the 28b in response to input load F all the time.Especially, be specified to all the time from being applied under the effect of the antagonistic force on said a pair of assembly wall 62a of portion and the 62b and producing component by the orientation of putting face 28a and 28b and apex towards the summit of protruding profile T by putting face 28a and 28b.
Neutral surface S comprises that under no load state the axis Q of summit T and shaft like parts 36 is the plane of line of centers O.Said a pair of assembly wall 62a of portion and 62b are arranged to the symmetry about neutral surface S.Apex angle ss is determined to be than (180 °-β) little angle of the angles relevant with the variable-angle β of the direction of input load F.Like this, even the direction of input load F changes in the scope of variable-angle β, input load F also all the time through the said a pair of assembly wall 62a of portion and 62b by supporting by putting face 28a and 28b.In addition, apex is specified to ratio like 80 ° of big angles, and apex is too small if this is, then the component of T increases towards the summit, may cause flexural deformation thus.
Periphery wall 62 also has the pair of parallel wall 62c of portion and 62d and flat rear wall parts section 62e, forms the roughly pentagon of the home base configuration that is similar in the baseball on the whole.Said pair of parallel wall 62c of portion and 62d and the said a pair of assembly wall 62a of portion and 62b in abutting connection with and be parallel to neutral surface S and about neutral surface S symmetry.Rear wall parts section 62e has the two ends that are connected to the other end relative with 62b with the 62a of assembly wall portion of 62c of parallel walls portion and 62d with the right angle, thereby 62c of parallel walls portion and 62d interconnect integratedly.This makes wall thickness that periphery wall 62 can keep approaching and in light weight, improves rigidity simultaneously and the distortion under input load F effect reduces.
Contacting with the 62b face with the 62a of assembly wall portion of periphery wall 62 with 28b by putting face 28a of the sensor mounting hole 28 of operating pedal 16 then is set with predetermined gap between the remainder of sensor mounting hole 28 and periphery wall 62.This makes 62a of assembly wall portion and 62b to keep reliably and contacts with the 28b face by putting face 28a, thereby only allows 62a of assembly wall portion and 62b supporting input load F.
For the vehicle operating pedal device 10 of this structure, be installed in according to the load transducer 30 of the relative displacement between case member 34 and the shaft like parts 36 incoming call detecting operation power operating pedal 16 and control lever 22 can be pivoted relative to each other in the ground bonded assembly pivot connecting portion 20.Load transducer 30 detects the operating effort through rod pin 26 transmission of pivot connecting portion 20.
Load transducer 30 is installed in the sensor mounting hole 28 that is formed in the operating pedal 16.Like this, vehicle operating pedal device 10 can form simple and compact design and can the mounting condition of traditional device with pedal not being had a negative impact on the whole.In addition, vehicle operating pedal device 10 can adopt and peripheral components identical in traditional device with pedal such as control lever 22, U-shaped clamp 24 and rod pin 26 etc., thereby makes device to form with the low cost structure.
The case member 34 of load transducer 30 has a pair of flat 62a of assembly wall portion and the 62b that forms protruding profile with predetermined apex convergence.The flat 62a of assembly wall portion and the lateral wall of 62b respectively be formed on sensor mounting hole 28 in said a pair of flat leaning on put that face 28a contacts with the 28b face and locate with the attitude of fixing.In addition; Even trigger the direction of input load F that element 32 is delivered to case member 34 because the following press operation of operating pedal 16 changes from shaft like parts 36 through strain, input load F is also a pair ofly supported by putting face 28a and 28b by said through the said a pair of assembly wall 62a of portion and 62b all the time.
It is minimum that this structure produces case member 34 owing to stress concentration flexural deformation is reduced to.This has prevented that strain from triggering the flexural deformation by the case member 34 caused distortion of not expecting of element 32, has prevented that perhaps strain from triggering the reducing of deflection (strain value) of element 32.As a result, have the contrast of less diastrophic high-strength parts or large scale case member with employing, the precision that strain triggers element 32 detecting operation power can improve, and makes device to form lightweight structure with low cost simultaneously.
Even the direction of input load F changes along with the following press operation of operating pedal 16, input load F is a pair ofly supported by putting face 28a and 28b by said through the said a pair of assembly wall 62a of portion and 62b all the time.Therefore, with the contrast that adopts the circular cylindrical shell parts, load transducer 30 can remain fixing position and needn't worry can produce vibration displacement and then cause the accuracy of detection reduction of operating effort with attitude.
In addition, because the reducing of the flexural displacement of case member 34, even the direction of input load F changes, strain triggers element 32 and also only can aspect deformation position, change, and can not produce complicated distortion pattern, and the variation of deflection is minimum.Like this, under the situation that input load F fixes, strain resistance element 40a to 40d has the mean strain value of basic fixed.Like this, even pedal is increased input load F gradually by actual actuation, accuracy of detection also keeps stable and reliability improves.
Orientation and apex by putting face 28a and 28b are so definite, make that said a pair of assembly wall 62a of portion and 62b can be in response to from irrespectively producing the component towards the summit of protruding profile T by putting antagonistic force that face 28a and 28b apply and input load F along with the direction that presses down of operating pedal 16 changes all the time.This has been avoided the 62a of assembly wall portion and 62b and by the relative motion of the friction force that is independent of between them to be produced of putting face 28a and 28b.This makes input load F a pair ofly supported by putting face 28a and 28b by said through the said a pair of assembly wall 62a of portion and 62b all the time.As a result, this has prevented reliably that further the offset of load transducer 30 and attitude from changing, thereby has improved accuracy of detection.
Apex is determined to be than (180 °-β) little of the angles relevant with the variable-angle β of the direction of importing load F.This has prevented that relevant part is independent of the 62a of assembly wall portion and 62b relative to each other moves with the friction force that produces by putting between face 28a and the 28b.Like this, input load F can be all the time a pair ofly supported by putting face 28a and 28b by said through the said a pair of assembly wall 62a of portion and 62b.Even in this respect, can prevent reliably further that also the offset of load transducer 30 and attitude from changing, thereby improve accuracy of detection.
It is that the 62a of assembly wall portion and 62b a pair ofly engage by putting face 28a and 28b with said respectively that the case member 34 of load transducer 30 is settled to allow said a pair of attachment face fully, thereby improves the assembling performance of load transducer 30.In addition, for the case member 34 that is assembled on the operating pedal 16, except the 62a of assembly wall portion and 62b and by putting face 28a and the 28b, the remainder of case member 34 need not to have high dimensional accuracy.This has reduced the accuracy requirement etc. of component shape, thereby manufacturing cost is reduced.
The said a pair of assembly wall 62a of portion of case member 34 and 62b form the symmetry about neutral surface S.Therefore, press down along with operating pedal 16 and the said a pair of orientation of putting face 28a and 28b of leaning on of the input load F of change of direction is easy to design through the said a pair of assembly wall 62a of portion and 62b supporting all the time.
In the embodiment shown, overlap basically by putting direction and the neutral surface S that face 28a and 28b be oriented the intermediate point input load F that presses down stroke that makes at operating pedal 16.Therefore, the direction of input load F is roughly to change about the central symmetrical manner of neutral surface S.Like this, under the situation of suitably confirming apex, input load F can change irrespectively all the time through the said a pair of assembly wall 62a of portion and 62b with its direction and a pair ofly suitably supported by putting face 28a and 28b by said.
Case member 34 has double-layered cylinder shape structure, and this structure has connecting portion 60, periphery wall 62 and flange connector 64.Among these component parts, said a pair of assembly wall 62a of portion and 62b are formed on the periphery wall 62.Therefore, case member 34 can form structure in light weight and that cost is low.On the contrary, said a pair of assembly wall 62a of portion and 62b are easily deformable owing to import load F.But in the embodiment shown, said pair of parallel wall 62c of portion and 62d form and said a pair of assembly wall 62a of portion and 62b adjacency.This makes the rigidity of periphery wall 62 increase, thereby can suitably prevent the flexural deformation of 62a of assembly wall portion and 62b.
Except said a pair of assembly wall 62a of portion and 62b, between the remainder of periphery wall 62 and sensor mounting hole 28, be provided with the gap.Therefore, case member 34 can be easily positioned in the sensor mounting hole 28 of case member 34, makes that the outer surface of 62a of assembly wall portion and 62b is that attachment face contacts with the reliable ground of 28b by putting face 28a with the said a pair of of sensor mounting hole 28.This makes input load F only to be supported by 62a of assembly wall portion and 62b, thereby obtains high accuracy of detection reliably.
In the embodiment shown, strain triggers element 32 and has the hollow cylinder shape concentric with shaft like parts 36.Four strain resistance element 40a to 40d are placing strain to trigger on the outer peripheral face of element 32 on the predetermined angular range, and are simultaneously symmetrical about neutral surface S across neutral surface S.Therefore, can be with bridgt circuit detecting operation power reliably.
Load transducer 30 is installed on the operating pedal 16, and operating pedal 16 is as the sensor installing component that can be connected to control lever 22 around the axis of rod pin 26 with respect to control lever 22 pivotally.This makes load transducer 30 can on terminal stage, detect the operating effort (output) that is delivered to control lever 22 from rod pin 26, thereby with the braking force that output produced of high Precision Detection according to control lever 22.
Case member 34 is arranged in the sensor mounting hole 28 that is formed in the operating pedal 16, and U-shaped clamp 24 keeps two axial ends of rod pin 26, and rod pin 26 passes sensor mounting hole 28 and stretches out from its both sides, passes through the axis Q of shaft like parts 36 simultaneously.Like this, do not have rotating torque and act on the load transducer 30, thereby the accuracy of detection of operating effort further improves as reversing etc.
Fig. 7 A and 7B are the views corresponding to Figure 22 A and 22B, illustrate to press down the stroke load transducer 30 a little that mediates.Fig. 7 A illustrates no load state, and Fig. 7 B illustrates the load condition that has that is applied with predetermined input load F.Input load F is a pair ofly supported by putting face 28a and 28b by said through the said a pair of assembly wall 62a of portion and 62b.This has prevented in the structure shown in Figure 22 A and the 22B stress concentration that can produce, thus the flexural deformation of the case member 34 that suppresses to cause by said stress concentration.As a result, can import load F, i.e. operating effort with high Precision Detection.
Fig. 8 A and 8B are the views that the power transmit mode when being applied with input load F is shown.Fig. 8 A representes to press down stroke and is in the state with intermediate point identical shown in Fig. 7 B.The 62a of assembly wall portion and 62b stand that a pair of size is identical from producing when putting face 28a with antagonistic force that 28b applies, direction is towards the component of the summit of protruding profile T.This makes load transducer 30 be positioned at reliably and saidly a pair ofly goes up and do not produce the position and move with attitude and change by putting face 28a and 28b.
When operating pedal 16 was further pressed down in this state gradually, the direction of input load F was changed into the state shown in Fig. 8 B.But, because from by putting the antagonistic force that face 28a and 28b apply, 62a of assembly wall portion and 62b still keep work and produce the component of direction towards the summit of protruding profile T.The position that like this, can prevent load transducer 30 is moved with attitude and is changed.In addition, because the flexural deformation of case member 34 is reduced to minimum,, also only change the load that said pair of parallel wall portion 62c and 62d are born so even the direction of input load F changes, the deformation position that strain triggers element 32 changes.That is to say that the distortion pattern can be not complicated, thereby stably keep high accuracy of detection.Fig. 8 A and 8B are the cutaway views of looking from rear side, and the view of looking with the square from it zone shown in Fig. 7 A and the 7B is opposite, expression assembly wall 62a of portion and the position opposite of 62b on left and right directions.
Next another embodiment of the present invention is described.In following explanation, the parts total with the foregoing description have similar Reference numeral and omit its redundant detailed description with part.
< embodiment 2 >
Fig. 9 A and 9B are the views corresponding to Figure 1A and 1B.Fig. 9 A illustrates the state that stroke is in its intermediate point that presses down, and Fig. 9 B illustrates another state that stroke is in its terminal stage that presses down.Vehicle operating pedal device 80 comprises intermediate bar 82, and operating effort is delivered to control lever 22 from operating pedal 16 through intermediate bar 82.
Intermediate bar 82 has by means of the rest pin 84 that extends abreast with support shaft 14 and is pivotably mounted on the pedal support 12 one vertically end, with through being connected the longitudinal middle part that STATEMENT OF FEDERALLY SPONSORED (link) 86 is pivotably connected to operating pedal 16.This makes intermediate bar 82 can be accompanied by pressing down of operating pedal 16 and mechanically pivots around rest pin 84.Connect STATEMENT OF FEDERALLY SPONSORED 86 and have two vertical ends that can be connected to operating pedal 16 and intermediate bar 82 through a pair of connecting pin 88 and 90 that is parallel to support shaft 14 extensions respectively with being pivoted relative to each other.
Control lever 22 is that its vertical end is connected to intermediate bar 82 through pivot connecting portion 92 endways.Pivot connecting portion 92 has the structure identical with pivot connecting portion 20, and load transducer 30 is installed in the sensor mounting hole that is formed in the intermediate bar 82.Therefore, second embodiment has the advantageous effects identical with first embodiment.
In addition, load transducer 30 can be installed in one of pivot connecting portion with following structure to be used for detecting operation power.Through the first pivot connecting portion, connecting STATEMENT OF FEDERALLY SPONSORED 86 can be connected to operating pedal 16 with respect to operating pedal 16 pivotally through connecting pin 88.Through the second pivot connecting portion, connecting STATEMENT OF FEDERALLY SPONSORED 86 can be connected to intermediate bar 82 with respect to intermediate bar 82 pivotally through connecting pin 90.Through the 3rd pivot connecting portion, intermediate bar 82 can be connected to pedal support 12 with respect to pedal support 12 pivotally through rest pin 84.
< embodiment 3 >
Load transducer 100 shown in Figure 10 has basic structure same as the previously described embodiments, and comprises that strain triggers element 32, case member 34 and shaft like parts 36.But four strain resistance element 102a to 102d are placed in and different in the above-described embodiments positions.That is, four strain resistance element 102a to 102d be arranged in neutral surface S and with axis that neutral surface S vertically triggers element 32 through strain be that another plane of line of centers O is in four zones in boundary line, become the position relation of symmetry about neutral surface S.More specifically, four strain resistance element 102a to 102d are placed in strain with about 90 ° (interval) and trigger four positions on the element 32 and intersect with the line of centers O that passes sensor (axis Q) and with two straight lines that about 45 ° angle is passed neutral surface S.The middle position of strain resistance element 102a to 102d triggers the position that element 32 intersects corresponding to said two straight lines and strain.
In this case; When input load F applies with the direction that overlaps with neutral surface S; Strain resistance element 102b, 102d and the strain resistance element 102c, the 102a that are placed at the symmetric position place that the relative both sides of neutral surface S separate each other deform with the basic ratio that equates, thereby balanced strain value are provided.If the direction of input load changes, then strain resistance element 102b, 102d and strain resistance element 102c, 102a deform respectively in a different manner, thereby change strain value.
Strain value to strain resistance element 102b and 102d is elaborated below.Shown in figure 11; If fixed-size input load applies with the direction that changes, then strain resistance element 102b and 102d=0 ° sensor input angle (direction of load F is imported in expression) place between them and with state that neutral surface S overlaps under change with opposite characteristic.The strain value of the strain value of strain resistance element 102b and strain resistance element 102d be these two strain values overall strain value and sensor input angle variation irrespectively the minus side of sensor input angle or just side remain the value of basic fixed.This situation is applicable to strain resistance element 102c and 102a similarly.
Therefore, place strain resistance element 102b and the overall strain value of 102d or the overall strain value of strain resistance element 102c and 102a of neutral surface S both sides through detection, can with the variation of sensor input angle irrespectively with the high Precision Detection operating effort.Figure 12 A and 12B illustrate the view that uses these strain resistance elements 102a to 102d to come the bridgt circuit of detecting operation power (corresponding to input load F).Figure 12 A is corresponding to Fig. 5 C, and Figure 12 B is corresponding to Fig. 6.For the circuit shown in Figure 12 B, permanent resistor Rc is arranged on such as trigger element 32 bonded assembly vehicles triggering in the zone that element opened in 32 minutes with strain with control circuit part etc. through wire harness 56 and joint 58 and strain.Along with the direction that applies of importing load F changes, the strain value of strain resistance element 102a to 102d (resistance value) continuously changes.Therefore, can detect the stroke that presses down that the sensor input angle is an operating pedal 16 to depend on the ratio that strain value (resistance value) changes.
< embodiment 4 >
Figure 13 A and 13B and Figure 14 A and 14B illustrate the load transducer 110 of the another kind of type different with load transducer 30 with the cutaway view corresponding to Fig. 3 A and 3B and Fig. 4 A and 4B.Figure 13 A and 14A are the longitudinal sections along neutral surface S intercepting; Figure 13 B and 14B are respectively the cutaway views along the line XIVA-XIVA intercepting of the line XIIIA-XIIIA of Figure 13 A and Figure 14 A.
Load transducer 110 comprises that strain cylindraceous triggers element 112, and strain triggers element 112 and detects along its load that radially applies.Be positioned at case member 114 that strain triggers the outer circumferential side of element 112 and have the outer peripheral face that forms the home base configuration identical with the periphery wall of case member 34 62.Case member 114 is assembled in the sensor mounting hole 28 with fixing attitude, and a pair of attachment face 114a contacts with 28b maintenance face respectively with by putting face 28a with 114b.In addition, case member 114 waits what strain triggered element 112 through welding and on strain triggers the regional area (sidewall sections in the left side of strain triggering element 112 when Figure 13 A and 13B and Figure 14 A look with 14B) of the line of centers of element 112, keeps strain triggering element 112 integratedly.
Strain triggers element 112 and has inside cylindraceous, and shaft like parts 116 passes through this inside and two axial ends can be supported by U-shaped clamp 24 with being pivoted relative to each other.In this case, shaft like parts 116 often is used as rod pin, the connecting pin of the connecting portion 20 that promptly pivots.
For the load transducer 110 of this structure, when input load F becomes when being zero basically, when Figure 13 A and 13B looked, case member 114 maintenances were concentric with the axis Q of shaft like parts 116 basically.In addition, when when Figure 13 A and 13B look, strain triggers element 112 and keeps eccentric with axis Q, make left side wall portion have the outer peripheral edges that radially are fixedly secured on case member 114, and right side wall portions has the inner peripheral that basic maintenance contacts with shaft like parts 16.This state is so limited, and promptly control lever 22 is pressed to the right and is positioned at initial position so that operating pedal 16 contacts with the retainer (not shown) owing to the effect of (not shown) such as retracing spring when Figure 1A looks.In this state, strain triggers element 112 and has to form and be the cylinder configuration in proper circle cross section basically.
Along with pressing down of operating pedal 16, load radially is applied between case member 114 and the shaft like parts 116 owing to the antagonistic force of control lever 22.So as looking from Figure 13 A and 13B and Figure 14 A and 14B, shaft like parts 116 is with respect to case member 114 right shifts.This makes strain trigger element 112 and produces tensile deformation and become the elliptical shape shown in Figure 14 A and 14B.Case member 114 has the inner space of annular, and this space is sized to allow the relative displacement of shaft like parts 116 and the tensile deformation that strain triggers element 112.In addition, strain triggering element 112 is processed by metallic material that elastic deformation can take place when receiving radial weight such as ferritic stainless steel with excellent formability etc.Therefore, along with pressing down of operating pedal 16, strain triggers element 112 and produces tensile deformation with the ratio that depends on operating effort.
In order to detect the stretcher-strain that strain triggers element, be fixed on strain on the side wall portion as the upper and lower of strain resistance element (not shown) in Figure 14 B of strain test element and trigger on the outer peripheral face of element 112.Stretcher-strain is stood to be used for detecting operation power in these zones.The outer peripheral face that strain triggers element 112 has been pre-formed dielectric film such as glass paste layer etc. with mode same with the above-mentioned embodiment.On said dielectric film, be formed with conductive material such as silver etc., form the conducting channel pattern thus.In addition, to use sintering be that roasting technology etc. is formed integrally as and makes its part keep in touch with the conducting channel pattern to strain resistance element.
For the 4th embodiment, load transducer 110 adopts the case member 114 with the outer peripheral face that forms the home base configuration identical with the periphery wall of case member 34 62.Case member 114 is assembled in the sensor mounting hole 28 with fixing attitude, and a pair of attachment face 114a contacts with 28b maintenance face respectively with by putting face 28a with 114b.This flexural deformation that causes by stress concentration, change the position that causes by the direction of input load F and move with attitude variation etc. and reduce to minimum, thereby obtain advantageous effects same as the previously described embodiments, for example high accuracy of detection case member 114.
< embodiment 5 >
Figure 15 A and 15B illustrate the load transducer 120 of another embodiment.Figure 15 A is the front elevation corresponding to Fig. 2 and 10, and Figure 15 B is the transparent view that the part of shaft like parts 126 and plate-shaped member 128a to 128d is shown.For load transducer 120, case member 122 has the connecting portion 124 that forms octagon tubular configuration, and shaft like parts 126 has from overlooking face (front elevation that is equal to Figure 15 A) basic octagonal shape that overlaps with connecting portion 124 when looking.In eight limits of octagon body; Whenever separate the four edges that settle a position; Four zones that promptly with neutral surface S with through axis Q and perpendicular to the plane of neutral surface S are the boundary line have four flat plate-shaped member 128a to 128d respectively with the fixing state of one, and across between connecting portion 124 and shaft like parts 126.
The common plate-shaped member 128a to 128d that triggers element as strain is processed by metallic material that elastic deformation can take place when receiving along shearing load that the thickness of slab direction applies such as ferritic stainless steel with excellent formability etc.Plate-shaped member 128a to 128d places in the zone around the axis Q with paralleling to the axis Q, and becomes the position relation of symmetry about neutral surface S, promptly more particularly, is in the tilt attitude of about 45 with respect to neutral surface S.Plate-shaped member 128a to 128d has the bottom on the connecting portion 124 that is fixed on case member 122 integratedly.The strain resistance element 102a to 102d that is installed in respectively on the lateral wall of plate-shaped member 128a to 128d can be with the stroke that presses down of mode detecting operation power (corresponding to input load F) identical with above-mentioned load transducer 100 and operating pedal 16.
Load transducer 120 for the 5th embodiment; Load transducer 100 shown in the image pattern 10 is the same; Input load F concentrates and acts on common four flat plate-shaped member 128a to 128d as strain triggering element, and said four flat plate-shaped member 128a to 128d are arranged to be spaced from each other around the axis of shaft like parts 126.This makes the strain value that is caused by shear strain can trigger the strain value of element 32 greater than the cylindric strain shown in Figure 16 A and the 16B, thereby increases sensitivity and accuracy of detection.Particularly, Figure 16 C illustrates with single-point line strain that draw and the load transducer 100 shown in Figure 16 A and triggers the relevant figure line of element 32.Figure line (being depicted in two positions) by the strain value shown in the solid line is relevant with the pair of plate-shaped parts 128b and the 128d of the load transducer that places present embodiment 120 downsides.
< embodiment 6 >
In the above-described embodiments, strain resistance element 102a to 102d is installed in respectively on four plate-shaped member 128a to 128d seriatim.But strain test element 130 also can be shown in figure 17 be installed on plate-shaped member 128b and the 128d with position spaced up and down like strain resistance element etc. by twos, with the strain on detection compressive deformation and two zones of tensile deformation.Strain signal is drawn from the bridgt circuit that forms with the mode identical with the circuit of Fig. 6.
< embodiment 7 >
Figure 18 A and 18B illustrate the load transducer 140 of another embodiment.Figure 18 A is the transparent view on every side that the sensor installation region of operating pedal 16 is shown, and Figure 18 B is the amplification view along the line XVIIIA-XVIIIA intercepting of Figure 18 A.Compare with the load transducer 30 shown in the 3B with Fig. 3 A, load transducer 140 comprises case member 150, and case member 150 is formed with mounting flange 142 and replaces locating flange 66, and mounting flange 142 stretches out towards the periphery zone on the whole periphery of periphery wall 62.Mounting flange 142 is formed with patchhole 146 in two desired locations.
For case member 150, periphery wall 62 is inserted in the sensor mounting hole 28 with predetermined gap on its whole periphery, and two fastening bolts 144 are inserted in the patchhole 146 and are screwed in the patchhole 146 of operating pedal 16.That is to say that case member 150 is fixed on the operating pedal 16 through fastening bolt 144 integratedly.Among each zone of mounting flange 142, be formed with the fixed installation portion of a region representation of tapped bore 148 corresponding to installation portion required for protection.Among each zone of operating pedal 16, be formed with the be fixed installation portion of a region representation of tapped bore 148 corresponding to load acceptance division required for protection.Fastening bolt 144 is the screwed parts corresponding to anchor fitting required for protection.
Zone to using fastening bolt 144 two the fixed installation portions on the operating pedal 16 that are fixed on promptly to be formed with patchhole 146 describes.Shown in Figure 19 A and 19B, a pair of fixed installation portion to be to be arranged on the case member 150 with the identical direction of input load F, promptly is in downstream position and occupies the lower position among Figure 19 A and the 19B.They are that center sensor line O is arranged in the position that is spaced from each other predetermined subtended angle γ around the axis Q of shaft like parts 36 about neutral surface S symmetrically.
Subtended angle γ is specified to bigger than the variable-angle β relevant with the sensing of input load F.Like this, even the direction of input load F changes along with pressing down of operating pedal, the direction of input load F also remains in the scope of subtended angle γ.Figure 19 A is the birds-eye view of the case member 150 of looking from the upper area of Figure 18 B, and Figure 19 B is the upward view (corresponding to the front elevation of Fig. 2) of looking from opposite lower area.Parallel to the axis O and the basic neutral surface S that overlaps with the direction of importing load F corresponding to plane of symmetry G required for protection at the intermediate point that presses down stroke of operating pedal 16.
For the load transducer 140 of this structure, have two the fixed installation portions (being formed with the zone of patchhole 146) that are spaced from each other subtended angle γ around axis Q with case member 150 integrally formed mounting flanges 142.Said fixed installation portion is fixed on two installation portions that are fixed (being formed with the zone of tapped bore 148) of operating pedal 16 by means of fastening bolt 144 integratedly.In addition; Subtended angle γ is specified to bigger than the sensing variable-angle β that change is obtained along with being pivoted relative to each other motion of the caused pivot connecting portion 20 of pressing down of operating pedal 16 of input load F, thereby the direction of input load F is in the position between two fixed installation portions (patchhole 146).
For this reason, operating pedal 16 bears input load F through two fixed installation portions (patchhole 146) and the installation portion that is fixed (tapped bore 148) all the time, thereby minimum is reduced in the flexural deformation that is caused by stress concentration of case member 150.This has prevented that strain from triggering the distortion of not expecting that is caused by flexural deformation of element 32 or reducing of deflection (strain value).Like this; Present embodiment has advantageous effects same as the previously described embodiments; For example have the situation of less diastrophic high-strength parts or the contrast of employing large scale case member with employing, the accuracy of detection of operating effort improves, and forms the structure that cost is lower, weight is lighter.
For the 30 such a pair of assembly wall 62a of portion of the load transducer shown in image pattern 3A and the 3B and 62b and by putting face 28a and 28b face contacting structure, there are following various misgivings.That is, the existence of dimensional discrepancy and installation error etc. causes the attitude of the case member shown in Figure 20 A 34 for example to change, and the deflection shown in Figure 20 B against joint.These situation have the risk of the accuracy of detection deterioration that makes operating effort.
In described the 7th embodiment, two fixed installation portions (placing patchhole 146 places) use a pair of fastening bolt 144 to be fixed on integratedly on the installation portion that is fixed (placing tapped bore 148 places).Therefore, case member 150 can be in fixing attitude with respect to operating pedal 16 all the time, thereby provides reliability high stable detection precision.
For present embodiment, fixed installation portion (being formed with the zone of patchhole 146) uses the fastening bolt 144 as anchor fitting to be fixed on integratedly on the installation portion that is fixed (being formed with the zone of threaded portion 148).This make with the relevant components parts through welding wait the structure that interfixes mutually ratio device can construct with the cost of further reduction and form.
Although describe the present invention with reference to the said embodiment that illustrates in the drawings, these embodiment only are the example property stated, and the present invention can implement with improving with various modification according to those skilled in the art's knowledge.

Claims (21)

1. vehicle operating pedal device (10 that is equipped with load transducer; 80), comprising:
Operating pedal (16), said operating pedal are installed on the pedal support (12) that is fixedly secured on the vehicle, also can be pressed down by the operator so that can pivot around the axis of support shaft (14);
Reaction member (22), said reaction member receive the operating effort of said operating pedal (16) and produce and the cooresponding antagonistic force of said operating effort;
At least one pivot connecting portion (20; 92), said pivot connecting portion places between said operating pedal (16) and the said reaction member (22), has relative to each other bonded assembly constituent elements pivotly of an opposing connection connecting pin (26), and transmits said operating effort through said connecting pin; With
The load transducer (30 of the said operating effort of electro-detection; 100; 110; 120; 140);
It is characterized in that:
Said load transducer (30; 100; 110; 120; 140) comprise (i) shaft like parts (36; 116; 126), (ii) the annular case member (34; 114; 122; 150), said case member is configured in the radial outside of said shaft like parts so that the direction of edge and the axis normal of said shaft like parts is shifted with respect to said shaft like parts, and diametrically around said shaft like parts (36; 116; 126), (iii) be configured in said shaft like parts (36; 116; 126) and said case member (34; 114; 122; 150) trigger element (32 with strain between across them; 112; 128a to 128d) and (iv) be fixed on said strain and trigger element (32; 112; 128a to 128d) strain test element (40a to 40d on; 102a to 102d; 130), wherein, said antagonistic force makes said shaft like parts (36; 116; 126) and said case member (34; 114; 122; 150) edge and said shaft like parts (36; 116; The direction of axis normal 126) relatively moves and makes said strain trigger element (32; 112; 128a to 128d) distortion is so that said strain test element (40a to 40d; 102a to 102d; 130) detect said strain and trigger element (32; 112; 128a to 128d) distortion;
Said case member (34; 114; 122; 150) be configured in sensor installing component (16; 82) on, said sensor installing component is by any formation in the interconnective constituent elements of said connecting pin (26) in said pivot connecting portion (20), and said shaft like parts (36; 116; 126) be connected in the said constituent elements another through said connecting pin (26);
Said case member (34; 114; 122; 150) have respectively and be formed on said sensor installing component (16; 82) a plurality of load acceptance division (28a, 28b on; 148) a plurality of installation portions (62a, the 62b that engage; 114a, 114b; 146), and with fixing attitude location be configured in said sensor installing component (16; 82) in; And
Even from said shaft like parts (36; 116; 126) trigger element (32 through said strain; 112; 128a to 128d) is delivered to said case member (34; 114; 122; 150) direction of input load F is because said pivot connecting portion (20; 92) along with the motion and when changing relatively of being pivoted relative to each other that presses down of said operating pedal (16), said a plurality of load acceptance divisions (28a, 28b; 148) also all the time through said a plurality of installation portions (62a, 62b; 114a, 114b; 146) the said input load F of supporting.
2. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 1; 80), wherein
Said a plurality of installation portion (62a, 62b; 114a, 114b) comprise with predetermined apex evagination be formed on and said shaft like parts (36; 116; A pair of flat attachment face (62a, 62b in the plane of axis normal 126); 114a, 114b), and said a plurality of load acceptance division (28a 28b) comprises and said attachment face (62a, 62b; 114a, 114b) phase ground connection and interior concave relief become in said sensor installing component (16) a pair of flat by put face (28a, 28b); And
Said case member (34; 114; 122) with fixing attitude location, make at said a pair of attachment face (62a, 62b; 114a is 114b) respectively with said a pair of (28a 28b) carries out under the situation of face contact said a pair of attachment face (62a, 62b by putting face; 114a, 114b) by said input load F be pressed against said a pair of by put face (28a, 28b) on.
3. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 2; 80), wherein, said by put face (28a, orientation 28b) and said apex are determined to be, even in the direction of said input load F because said pivot connecting portion (20; 92) along with the motion and when changing relatively of being pivoted relative to each other that presses down of said operating pedal (16), said a pair of attachment face (62a, 62b; 114a, 114b) also be pressed against respectively based on said input load F all the time said a pair of by put face (28a, 28b) on.
4. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 3; 80), wherein, said by put face (28a, orientation 28b) and said apex are determined to be, even in the direction of said input load F because said pivot connecting portion (20; 92) along with the motion and when changing relatively of being pivoted relative to each other that presses down of said operating pedal (16), owing to lean on the face of putting (28a 28b) goes up the antagonistic force of generation, said a pair of attachment face (62a, 62b from said; 114a 114b) also produces component towards the summit of protruding configuration all the time.
5. according to each described vehicle operating pedal device (10 that is equipped with load transducer in the claim 2 to 4; 80), wherein, said apex be selected to than with the input load F that changes because said pivot connecting portion (20; 92) along with said operating pedal (16) press down be pivoted relative to each other motion and the relevant 180 °-β of angle of the variable-angle β of the direction that changes is little.
6. according to each described vehicle operating pedal device (10 that is equipped with load transducer in the claim 2 to 4; 80), wherein, said a pair of attachment face (62a, 62b; 114a 114b) forms the symmetry about neutral surface S, and said neutral surface S comprises by said a pair of attachment face (62a, 62b; 114a 114b) assembles and the summit of the protruding configuration that forms, and is in the said shaft like parts (36 under the no load state; 116; 126) axis.
7. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 6; 80), wherein
Said case member (34; 122) have and said strain triggering element (32; 128a to 128d) all connecting portions (60 in the bonded assembly integratedly; 124), be formed on said connecting portion (60; 124) outside and around the periphery wall cylindraceous (62) of said connecting portion with make said periphery wall (62) and said connecting portion (60; 124) interconnective integratedly tabular flange connector (64); And
Said periphery wall (62) has: assembly wall portion (62a, the 62b of pair of plate-shaped; 114a, 114b), the outer surface of the assembly wall portion of said pair of plate-shaped forms said a pair of attachment face (62a, 62b; 114a, 114b); Parallel with said neutral surface S and about said neutral surface S symmetrically, with said a pair of assembly wall portion (62a, 62b; 114a, a pair of flat tabular parallel walls portion that 114b) forms continuously (62c, 62d), and said sensor installing component (16) and said periphery wall (62) except that said assembly wall portion (62a, 62b; 114a is provided with the gap between the remainder outside 114b).
8. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 6; 80), wherein
Said strain triggers element (32) to have the drum of hollow and is configured to said shaft like parts (36) concentric; And
Trigger in said strain on outer peripheral face or the inner peripheral surface of element (32) and in predetermined angular range, be provided with a plurality of said strain test element (40a to 40d about said neutral surface S symmetry; 102a to 102d).
9. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 8; 80), wherein, four said strain test elements (102a to 102d) be arranged on said neutral surface S and with plane that said neutral surface S vertically triggers the axis of element (32) through said strain be boundary line and about four positions of said neutral surface S symmetry.
10. according to each described vehicle operating pedal device (10 that is equipped with load transducer in the claim 2 to 4; 80), wherein
Said sensor installing component (16; 82) comprise plate-shaped member, said plate-shaped member can be connected to said reaction member with respect to said reaction member (22) pivotally around said connecting pin (26), and have be formed with said a pair of by putting face (28a, sensor mounting hole (28) 28b);
Said load transducer (30; 100; 110; 120) allow its case member (34; 114; 122) in said sensor mounting hole (28), be arranged to make said a pair of attachment face (62a, 62b; 114a is 114b) respectively with said a pair of (28a 28b) carries out face contact by putting face;
Said connecting pin (26) is along said shaft like parts (36; 116; 126) axis inserts and stretches out from two axial ends of said sensor mounting hole (28); And
Said connecting pin (26) has two axial ends that kept by the U-shaped clamp (24) that is fixed on integratedly on the said reaction member (22).
11. according to each described vehicle operating pedal device (10 that is equipped with load transducer in the claim 2 to 4; 80), wherein
Said strain triggers element (32) and has an end with the other end is fixed on the hollow cylinder configuration on said case member (34) and the said shaft like parts (36) respectively integratedly, so as owing in response to said antagonistic force at the relative displacement between said case member (34) and the said shaft like parts (36) and the shear strain that in said strain triggering element, causes by said strain test element (40a to 40d; 102a to 102d) detects.
12. according to each described vehicle operating pedal device (10 that is equipped with load transducer in the claim 2 to 4; 80), wherein
Said strain trigger element (128a to 128d) comprise around the axis of said shaft like parts (126) be spaced from each other at interval ground and with the parallel axes of said shaft like parts (126) be arranged in a plurality of flat plate-shaped member on the said shaft like parts (126); Each of said plate-shaped member all has two axial ends that are fixed on integratedly respectively on said shaft like parts (126) and the said case member (122), in case since the shear strain that in said plate-shaped member (128a to 128d), causes in response to the relative displacement between said case member (122) and said shaft like parts (126) of said antagonistic force by said strain test element (102a to 102d; 130) detect.
13. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 1; 80), wherein
Said a plurality of installation portion (146) comprises two the fixed installation portions (146) that are arranged on the said mounting flange (142); Extend with the direction of the axis normal of said shaft like parts (36) on the integrally formed and edge of said mounting flange and said case member (150); Said two fixed installation portions are separated from each other with predetermined subtended angle γ around the axis of said shaft like parts; And said load acceptance division (148) comprises the installation portion that is fixed, and said fixed installation portion is fixed on the said installation portion that is fixed through predetermined anchor fitting (144) integratedly; And
Said subtended angle γ than said input load F because said pivot connecting portion (20; 92) along with said operating pedal (16) press down be pivoted relative to each other motion and the variable-angle β of the direction that changes is big make the direction of said input load F can be in the zone between said two fixed installation portions so that said two fixed installation portions (146) are determined to be.
14. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 13; 80), wherein, said anchor fitting comprises screwed part (144).
15. according to claim 13 or the 14 described vehicle operating pedal devices (10 that are equipped with load transducer; 80), wherein
Said two fixed installation portions (146) are set at the position about plane of symmetry G symmetry; Said plane of symmetry G is determined to be, and the said plane of symmetry G of midway location in the scope of the variable-angle β of the direction of said input load F comprises the axis of said shaft like parts (36).
16. according to claim 13 or the 14 described vehicle operating pedal devices (10 that are equipped with load transducer; 80), wherein
Said case member (150) comprise with said strain trigger element (32) integratedly all connecting portions (60) in the bonded assembly, be configured in said connecting portion (60) radial outside and around the periphery wall cylindraceous (62) of said connecting portion (60), make said periphery wall (62) and the interconnective integratedly tabular flange connector of said connecting portion (60) (64) and show the outward extending mounting flange in right angle (142) greatly from an end of said periphery wall (62).
17. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 15; 80), wherein
Said strain trigger element (32) have hollow drum and with said shaft like parts (36) concentric arrangement; And
A plurality of said strain test element (40a to 40d; 102a to 102d) in predetermined angular range, is arranged on the outer peripheral face or inner peripheral surface of said strain triggering element (32) about said plane of symmetry G symmetry.
18. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 17; 80), wherein
Four said strain test elements (102a to 102d) be arranged on said plane of symmetry G and with plane that said plane of symmetry G vertically triggers the axis of element (32) through said strain be boundary line and about four positions of said plane of symmetry G symmetry.
19. the vehicle operating pedal device (10 that is equipped with load transducer according to claim 16; 80), wherein
Said sensor installing component (16) comprises plate-shaped member; Said plate-shaped member can be connected to said reaction member with respect to said reaction member (22) pivotally around said connecting pin (26), and passes said plate-shaped member and be formed with sensor mounting hole (28);
Said load transducer (140) is arranged in said sensor installing component (16); Under the side surface state of contact of said mounting flange (142) and said sensor installing component (16), the periphery wall of said case member (150) is inserted in the said sensor mounting hole (28) and on its whole periphery, is provided with the gap;
Said connecting pin (26) inserts and stretches out towards two axial ends of said sensor mounting hole (28) along the axis of said shaft like parts (36); And
Said connecting pin (26) has two axial ends that kept by the U-shaped clamp (24) that is fixed on integratedly on the said reaction member (22).
20. according to claim 13 or the 14 described vehicle operating pedal devices (10 that are equipped with load transducer; 80), wherein
Said strain triggers element (32) and has an end with the other end is fixed on the hollow cylinder configuration on said case member (150) and the said shaft like parts (36) respectively integratedly, so as owing in response to said antagonistic force at the relative displacement between said case member (150) and the said shaft like parts (36) and the shear strain that in said strain triggering element (32), causes by said strain test element (40a to 40d; 102a to 102d) detects.
21. handling device (10 that is equipped with load transducer; 80), comprising:
The operating unit (16) that can be shifted by operation;
Reaction member (22), said reaction member receive the operating effort of said operating unit (16) and produce and the cooresponding antagonistic force of said operating effort;
At least one pivot connecting portion (20; 92), said pivot connecting portion places between said operating unit (16) and the said reaction member (22), a pair of constituent elements is relative to each other connected around connecting pin (26) pivotly, and transmit said operating effort through said connecting pin (26); With
The load transducer (30 of the said operating effort of electro-detection; 100; 110; 120; 140);
It is characterized in that:
Said load transducer (30; 100; 110; 120; 140) comprise (i) shaft like parts (36; 116; 126), (ii) the annular case member (34; 114; 122; 150), said case member is configured in said shaft like parts (36; 116; 126) radial outside and around said shaft like parts is so that the direction of edge and the axis normal of said shaft like parts is with respect to said shaft like parts (36; 116; 126) displacement (iii) is configured in said shaft like parts (36; 116; 126) and said case member (34; 114; 122; 150) trigger element (32 with strain between across them; 112; 128a to 128d) and (iv) be fixed on said strain and trigger element (32; 112; 128a to 128d) strain test element (40a to 40d on; 102a to 102d; 130), wherein, said antagonistic force makes said shaft like parts (36; 116; 126) and said case member (34; 114; 122; 150) edge and said shaft like parts (36; 116; The direction of axis normal 126) relatively moves and makes said strain trigger element (32; 112; 128a to 128d) distortion is so that said strain test element (40a to 40d; 102a to 102d; 130) detect said strain and trigger element (32; 112; 128a to 128d) distortion;
Said case member (34; 114; 122; 150) be configured in sensor installing component (16; 82) on, said sensor installing component is by any formation in the interconnective constituent elements of said connecting pin (26) in said pivot connecting portion (20), and said shaft like parts (36; 116; 126) be connected in the said constituent elements another through said connecting pin (26);
Said case member (34; 114; 122; 150) have respectively and be formed on said sensor installing component (16; 82) a plurality of load acceptance division (28a, 28b on; 148) a plurality of installation portions (62a, the 62b that engage; 114a, 114b; 146), and with fixing attitude location be configured in said sensor installing component (16; 82) in; And
Even from said shaft like parts (36; 116; 126) trigger element (32 through said strain; 112; 128a to 128d) is delivered to said case member (34; 114; 122; 150) direction of input load F is because said pivot connecting portion (20; When 92) changing relatively along with being pivoted relative to each other motion of displacement of said operating unit (16), said a plurality of load acceptance divisions (28a, 28b; 148) also all the time through said a plurality of installation portions (62a, 62b; 114a, 114b; 146) the said input load F of supporting.
CN2008100916883A 2007-04-13 2008-04-14 Load-sensor-equipped vehicle operating pedal device and load-sensor-equipped operating device Active CN101284512B (en)

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