Suspension Spring Adjusting Apparatus of Hydraulic Shock Absorber

Information

  • Patent Application
  • 20070144847
  • Publication Number
    20070144847
  • Date Filed
    June 15, 2006
    18 years ago
  • Date Published
    June 28, 2007
    17 years ago
Abstract
In a suspension spring adjusting apparatus of a hydraulic shock absorber, a mounting structure of a motor to a spring adjusting case is constituted by a three-point support structure in a plan view including a motor shaft of the motor.
Description

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be more fully understood from the detailed description given below and from the accompanying drawings which should not be taken to be a limitation on the invention, but are for explanation and understanding only.


The drawings:



FIG. 1 is a perspective view showing a hydraulic shock absorber;



FIG. 2 is a cross sectional view showing the hydraulic shock absorber;



FIG. 3 is a front elevational view showing a motor mounting state to a spring adjusting case;



FIG. 4 is a cross sectional view along a line IV-IV in FIG. 3;



FIG. 5 is a cross sectional view schematically showing a cross section along a line V-V in FIG. 3;



FIG. 6 is a back elevational view showing the spring adjusting case;



FIGS. 7A to 7C show a motor, in which FIG. 7A is a front elevational view, FIG. 7B is a side elevational view and FIG. 7C is a back elevational view;



FIG. 8 is a front elevational view showing the spring adjusting case;



FIG. 9 is a cross sectional view showing a communication between a jack chamber of the spring adjusting case and a pump chamber;



FIG. 10 is a cross sectional view showing the spring adjusting case;



FIGS. 11A to 11C show a case cover, in which FIG. 11A is a cross sectional view, FIG. 11B is a front elevational view and FIG. 11C is a back elevational view;



FIG. 12 is an enlarged cross sectional view showing a skirt portion of the case cover;



FIG. 13 is a cross sectional view showing a mounting structure of the spring adjusting case and the case cover;



FIG. 14 is a cross sectional view showing a pump;



FIG. 15 is a plan view showing a harness assembly;



FIG. 16 is a cross sectional view showing a harness insertion structure to the spring adjusting case;



FIG. 17 is a cross sectional view showing a harness guide;



FIG. 18 is a cross sectional view showing a cap;



FIG. 19 is a schematic cross sectional view along a line XIX-XIX in FIG. 3;



FIGS. 20A to 20C show a mounting stay, in which FIG. 20A is a cross sectional view, FIG. 20B is a side elevational view and FIG. 20C is a plan view; and



FIGS. 21A and 21B show a mounting holder, in which FIG. 21A is a cross sectional view and FIG. 21B is a side elevational view.


Claims
  • 1. A suspension spring adjusting apparatus of a hydraulic shock absorber comprising: a piston rod inserted to a cylinder;a spring adjusting jack provided in an outer periphery of the cylinder;a jack chamber provided in a spring adjusting case in which the spring adjusting jack is fixed to the outer periphery of the cylinder, wherein a plunger is provided in the jack chamber, a pump supplying a hydraulic pressure to the jack chamber is installed in the spring adjusting case, a motor driving the pump is provided in the spring adjusting case, and the motor is covered by a case cover attached to the spring adjusting case; anda suspension spring interposed between a spring receiver supported to the plunger of the spring adjusting jack and a spring receiver provided on a side of the piston rod,wherein a mounting structure of the motor to the spring adjusting case is constituted by a three-point support structure in a plan view including a motor shaft of the motor.
  • 2. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 1, wherein the three-point support structure of the motor is constituted by a structure of fixing two mounting bosses provided in a speed reducer arranged in a leading end side of the motor to the spring adjusting case by a bolt, and a structure of screwing a mounting holder wound around a mounting protrusion provided in a terminal end side of the motor to a mounting stay provided in a rising manner on the spring adjusting case.
  • 3. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 1, wherein a center of gravity of the motor is arranged in a triangle obtained by connecting three points of the three-point support structure of the motor.
  • 4. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 2, wherein a center of gravity of the motor is arranged in a triangle obtained by connecting three points of the three-point support structure of the motor.
  • 5. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 2, wherein a mounting error in a direction X of the motor is absorbed by applying the mounting protrusion of the motor to a mounting surface of the mounting stay in a fastening and rotating direction of the bolt, wherein a mounting error in a direction Y of the motor is absorbed by forming the screwing hole of the mounting holder as a slot, andwherein a mounting error in a direction Z of the motor is absorbed by arranging the mounting holder away from the motor in the direction along the motor shaft.
  • 6. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 3, wherein a mounting error in a direction X of the motor is absorbed by applying the mounting protrusion of the motor to a mounting surface of the mounting stay in a fastening and rotating direction of the bolt, wherein a mounting error in a direction Y of the motor is absorbed by forming the screwing hole of the mounting holder as a slot, andwherein a mounting error in a direction Z of the motor is absorbed by arranging the mounting holder away from the motor in the direction along the motor shaft.
  • 7. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 4, wherein a mounting error in a direction X of the motor is absorbed by applying the mounting protrusion of the motor to a mounting surface of the mounting stay in a fastening and rotating direction of the bolt, wherein a mounting error in a direction Y of the motor is absorbed by forming the screwing hole of the mounting holder as a slot, andwherein a mounting error in a direction Z of the motor is absorbed by arranging the mounting holder away from the motor in the direction along the motor shaft.
  • 8. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 2, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 9. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 3, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 10. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 4, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 11. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 5, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 12. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 6, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 13. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 7, wherein the speed reducer is provided with the two mounting bosses at two points on a plane which is orthogonal to an output shaft of the speed reducer, wherein a round hole for the bolt is provided in one mounting boss, andwherein an oblong hole for the bolt is provided in the other mounting boss.
  • 14. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 8, wherein a motor mounting seat surface is provided at two points of a mounting mating surface with the case cover in the spring adjusting case, a cylindrical spacer is raised on the motor mounting seat surface, and the mounting bolt inserted to each of the round hole and the oblong hole of two mounting bosses in the speed reducer of the motor is screwed to a mounting hole of the motor mounting seat surface through a hollow portion of the spacer.
  • 15. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 9, wherein a motor mounting seat surface is provided at two points of a mounting mating surface with the case cover in the spring adjusting case, a cylindrical spacer is raised on the motor mounting seat surface, and the mounting bolt inserted to each of the round hole and the oblong hole of two mounting bosses in the speed reducer of the motor is screwed to a mounting hole of the motor mounting seat surface through a hollow portion of the spacer.
  • 16. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 10, wherein a motor mounting seat surface is provided at two points of a mounting mating surface with the case cover in the spring adjusting case, a cylindrical spacer is raised on the motor mounting seat surface, and the mounting bolt inserted to each of the round hole and the oblong hole of two mounting bosses in the speed reducer of the motor is screwed to a mounting hole of the motor mounting seat surface through a hollow portion of the spacer.
  • 17. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 11, wherein a motor mounting seat surface is provided at two points of a mounting mating surface with the case cover in the spring adjusting case, a cylindrical spacer is raised on the motor mounting seat surface, and the mounting bolt inserted to each of the round hole and the oblong hole of two mounting bosses in the speed reducer of the motor is screwed to a mounting hole of the motor mounting seat surface through a hollow portion of the spacer.
  • 18. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 14, wherein a stay mounting seat surface is provided in a mounting mating surface with the case cover in the spring adjusting case, the stay mounting seat surface is provided with a stay mounting hole and a stay rotation preventing hole, a mounting leg of the mounting stay is seated on the stay mounting seat surface, a rotation preventing pin formed in the mounting leg by notching and bending is locked into the stay rotation preventing hole, and the mounting screw inserted to the thread hole of the mounting leg is screwed to the stay mounting hole.
  • 19. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 15, wherein a stay mounting seat surface is provided in a mounting mating surface with the case cover in the spring adjusting case, the stay mounting seat surface is provided with a stay mounting hole and a stay rotation preventing hole, a mounting leg of the mounting stay is seated on the stay mounting seat surface, a rotation preventing pin formed in the mounting leg by notching and bending is locked into the stay rotation preventing hole, and the mounting screw inserted to the thread hole of the mounting leg is screwed to the stay mounting hole.
  • 20. A suspension spring adjusting apparatus of a hydraulic shock absorber as claimed in claim 16, wherein a stay mounting seat surface is provided in a mounting mating surface with the case cover in the spring adjusting case, the stay mounting seat surface is provided with a stay mounting hole and a stay rotation preventing hole, a mounting leg of the mounting stay is seated on the stay mounting seat surface, a rotation preventing pin formed in the mounting leg by notching and bending is locked into the stay rotation preventing hole, and the mounting screw inserted to the thread hole of the mounting leg is screwed to the stay mounting hole.
Priority Claims (1)
Number Date Country Kind
2005-370681 Dec 2005 JP national