Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
  • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
  • F16L37/098—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks
  • F16L37/0985—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
  • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
  • F16L37/1225—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members using a retaining member the extremities of which, e.g. in the form of a U, engage behind a shoulder of both parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D48/00—External control of clutches
  • F16D48/02—Control by fluid pressure
  • F16D2048/0224—Details of conduits, connectors or the adaptors therefor specially adapted for clutch control
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S285/00—Pipe joints or couplings
  • Y10S285/921—Snap-fit
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S285/00—Pipe joints or couplings
  • Y10S285/924—Vented

Definitions

• the present invention relates to a pipe joint used for a hydraulic circuit or the like.
• this type of pipe joint 1 ⁇ is generally composed of a pipe 102 having an outward flange 101 near the distal end and a pipe 102 at one end (left side in FIG. 6) and an inner peripheral part.
• An annular joint body 103 having a distal end press-fitted therein, and a tubular fixture: I05 that covers the outer peripheral portion of the joint body 103 and connects the pipe 102 to the joint body 103 ing.
• an inward flange 106 facing the outward flange 101 is formed in a body, and a female screw 1 is provided on the inner peripheral surface of the other end of the metal fitting 105. ⁇ 7 are installed.
• the female screw 107 is screwed into the male screw 108 screwed to the outer peripheral surface of the joint main body 103 to connect the pipe 102 to the joint main body 103.
• this structure employs a structure in which the sculpture screw 107 of the fixture 105 is connected by screwing it into the male screw 108, so that the assembly process requires time and labor, and is not suitable for mass production.
• fixtures 05 since fixtures 05 must always be fitted to pipe 102, it is disadvantageous for storage and transportation.
• an outward flange formed in the vicinity of the distal end of the first pipe, a locking member immovably engaging the opposite end side surface of the outward flange, and a pipe Outer end
• a second pipe that surrounds the outer periphery of the seal member so as to press the outer periphery of the seal member, and extends from the second pipe integrally to form a radial gap around the outer periphery of the first pipe.
• the locking member is formed to be radially elastically displaceable and locked in the locking hole.
• a pressing projection wherein the pressing projection is locked by a lower portion of the locking hole so as to regulate elastic displacement of the pressing projection when the first pipe moves in a direction away from the second pipe.
• a structure provided with a locking groove See Japanese Utility Model Application Laid-Open No. 62-187187).
• the structure requires a spacer and a locking member in addition to the first and second pipes, so that the number of parts increases and the cost is low.
• An object of the present invention is to solve the above problems.
• the present invention provides a pipe having an outward flange near a distal end, an annular joint body into which a pipe distal end is press-fitted on one inner side, and an outer peripheral portion of the joint main body. And a tubular fixture for connecting the pipe to the hand body, the tubular fixture being cut and raised in the direction of the inner peripheral side from the other end of the peripheral wall. And the outward flange is provided at one end of the cylindrical fixing tool by the clamping force between the spring-like claw and the one end of the joint main body.
• An inward flange for preventing the joint from coming off from the joint body is integrally provided, and the inward flange has an eccentric hole for passing the outward flange and a continuous eccentric hole.
• An axial hole for passing the pipe is provided.
• the tubular fixing device is connected to the pipe through the eccentric hole and the axial hole.
• the tip of the pipe is fitted to the tip of the fitting body, and the inner periphery of the tubular fixture is fitted to the outer periphery of the fitting body.
• the claw portion expands outward in the radial direction and is locked at a predetermined position.
• Fig. 1 is a schematic vertical sectional view of a clutch assembly employing the pipe joint of the first embodiment
• Fig. 2 is a front view of an inward flange of the pipe joint
• Fig. 3 is a longitudinal section of a pipe of the pipe joint.
• 4 is a schematic cross-sectional view showing a pipe joint of the second embodiment
• FIG. 5 is a schematic cross-sectional view showing a pipe joint of the third embodiment
• FIG. 6 is a schematic cross-sectional view showing a conventional pipe joint.
• Fig. 1 shows an embodiment in which the present invention is applied to the piping of a clutch operating cylinder generally called CSC (abbreviation of outlet slack * cylinder), and the left side of Fig. 1 is shown. Is ahead.
• CSC clutch operating cylinder
• the pipe joint of the present invention includes a resin joint body] 0 and a metal pipe ⁇ 1.
• the fitting body 10 has an annular large-diameter hole 12 from the end side, A small-diameter opening 13 communicating with the small-diameter opening 12 and a pipe connection hole 14 communicating with the small-diameter opening 13 and having a diameter smaller than the small-diameter opening 13 are respectively provided concentrically. 14 communicates with the oil passage 15.
• the side wall 10a that defines the large-diameter opening hole 12 and the small-diameter opening hole 13 of the joint body 10 projects radially outward from the side wall 10b that defines the pipe connection hole 14.
• the side wall 10a is fitted with a tubular fixing member 20, which will be described later.
• an outward flange 17 which is compressed in the direction of the axis C1 of the pipe 11 and protrudes outward in the radial direction by press working, for example, is formed in the body. .
• the diameter d 1 of the outward flange 17 (FIG. 3) is set slightly smaller than the diameter of the large-diameter opening 12.
• the pipe tip 16 is fitted into the pipe connection hole 14 via the small-diameter opening 13, and a 0 ring 19 forms a gap between the pipe tip 16 and the small-diameter opening 13. Sealed.
• the cylindrical fixture 20 is, for example, an integrally molded product made of steel, and has an inward flange 21 facing the outward flange 17 and a peripheral wall portion 22 facing the joint body side wall 10 b. Is provided integrally.
• a claw portion 25 is cut and raised in the inner peripheral side axial direction at an interval of, for example, 180 degrees.
• Each claw portion 25 extends toward the axis as it goes to the side wall 10a side, and acts as a spring member that can be expanded in the joint radial direction.
• the tip of the claw portion 25 is associated with a step between the side wall 10a and the side wall 1b.
• the inward flange 21 is provided with an eccentric hole 26 and an axial hole 27 continuous with the eccentric hole 26. Assuming that the diameter is D1, the diameter of the $ 27 hole is D2, and the diameter of the outward flange 17 is d1 and the diameter of the pipe 11 is d2 as shown in FIG. Relationship is
• the cylindrical fixture 20 is connected to the pipe 11 through the eccentric hole 26 and the shaft hole 27.
• the pipe tip 16 is inserted into the small-diameter opening 13 of the joint body 10, and the outward flange 17 is inserted into the large-diameter opening 1 2.
• the 0 ring 19 is previously fitted to the pipe end 16.
• the inner peripheral portion of the cylindrical fixture 20 is fitted to the outer peripheral portion of the joint body side wall 10a.
• the claw portion 25 expands outward in the radial direction, passes through the side wall 10a, and locks on the step portion of the side wall 10a as shown in FIG.
• reference numeral 30 denotes a flywheel
• 31 denotes a clutch disk, which is spline-fitted to an output shaft 32 (the input shaft of the mission).
• Reference numeral 33 denotes a platter shaping plate which presses a friction facing 34 on the outer periphery of the clutch disk 31 onto the flywheel 30.
• Reference numeral 35 denotes a diaphragm spring whose outer peripheral portion 35a is always seated on a protrusion 33a of the pleat plate 33 to bias the pleat plate 33 forward.
• 3 6 is the clutch cover, the outer It is fixed to the lie wheel 30 and supports the diaphragm spring 35 via a pair of wirings 37 on the inner periphery.
• Reference numeral 38 denotes a release bearing, which is slidably disposed in the direction of the axis C2 of the output shaft 32, and which presses the back of the diaphragm spring 35 when the clutch is shut off.
• 39 is a housing.
• the hand main body 10 of the present invention is fixed to the inner peripheral portion of the front surface of the housing 39, and the oil passage 15 communicates with the annular cylinder 40 in the housing 39.
• the cylinder 40 is formed concentrically with the axis C 2, and opens toward the inner peripheral portion on the back surface of the diaphragm spring 35.
• the rear end of the cylindrical piston 42 is freely movably fitted to the cylinder 40, and the piston 42 slides in parallel with the axis C2 by the hydraulic oil in the cylinder 40. I do.
• the tip of the piston 42 is connected to the release bearing 38.
• 43 is a clutch pedal, and 44 is a master cylinder f '.
• a pair of pipes 11 and 11a having outward flanges 17 and 17a, respectively, are connected with their tips 16 and 16a facing each other. Structure is shown.
• the joint body 50 is configured symmetrically to the left and right in the figure, and the claw portions 25 of the cylindrical fixture 20 are connected to the joint body 5 It is engaged with the other end (the right side in Fig. 4).
• the inner peripheral portion of the washer 51 acts as a retaining inward flange of the other outward flange 17a.
• the washers 51 are also provided with holes 52 and 53 similar to the eccentric hole 26 and the shaft hole 27.
• one pipe 11 is connected to the cylindrical fixture 20 through the eccentric hole 26 and the peg hole 27 of the cylindrical fixture 20 to fix the cylinder.
• the fitting 20 connected to the pipe 1 fit the pipe tip 16 into the pipe connection hole 14 of the joint body 5 ⁇ and fit the outward flange 17 into the small-diameter opening 13. .
• the 0 ring 19 is also fitted to the pipe tip 16 in advance at this stage. Further, the other end 16a of the pipe to which the 0 ring 19 is fitted is moved in the same manner as described above, with the washer 51 placed on the back side of the outward flange 17a in advance. pipe Fit to the other end of the connection hole 14.
• the claw portion 25 expands outward in the radial direction and passes through the side wall, as shown in FIG. Thus, it is locked to the other end surface of the joint main body 50 via the washer 51.
• the joint body 50 and the washer 51 in the structure of FIG. 4 are further omitted, and the pipe end portions 16 and 16a are concentrically butted. ing.
• a pair of O-rings 19 seal the inner peripheral surface of the cylindrical fixture 20 and the outer peripheral surface of each pipe tip 16.
• one pipe 11 is connected to the cylindrical fixture 20 as in the case of the structure of FIG.
• the other pipe end 16a is abutted against one pipe end 16.
• the claw portion 25 is Then, go through the flanges 17 and 17a sequentially, and lock them to the outward flange 17a as shown in FIG.
• each of the pipe ends 16 and 16a may be connected to each other with a ring-shaped joint body interposed in a gap 55 of 0 to 19 rings.
• the above-mentioned ring upper joint body is made of elastic rubber, so that even if the 0-ring 19 is abolished, as described above, according to the present invention, the inward flange 21
• a cylindrical fixing device 20 having a claw portion 25 is employed, and the inward flange 20 has an eccentric hole 26 for passing through the outward flange 17 and an eccentric hole 2.
• 6 is provided with an axial hole 27 for allowing the pipe 11 to pass through continuously, so that only the tip 16 of the pipe 11 is inserted into the inner periphery of one end of the joint body 10.
• Pipe connection work can be performed easily and in a short time. Therefore, by adopting the present invention, mass production becomes easy and automation of assembly work is not impossible. Moreover, in the present invention, since the tubular fixture 20 having the inward flange 21 and the claw portion 25 is employed, not only can a pipe joint simply assembled be provided. , Which can reduce the number of parts and cost

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15205910

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (22)

Citations (3)

Family Cites Families (9)

• 1989
  • 1989-11-27 JP JP1989137748U patent/JPH068396Y2/ja not_active Expired - Lifetime
• 1990
  • 1990-11-08 WO PCT/JP1990/001451 patent/WO1991008413A1/ja active Application Filing
  • 1990-11-08 US US07/721,623 patent/US5161830A/en not_active Expired - Fee Related
  • 1990-11-08 DE DE19904092188 patent/DE4092188T/de active Pending
  • 1990-11-08 DE DE4092188A patent/DE4092188C2/de not_active Expired - Fee Related

Patent Citations (3)

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