WO2020213523A1 - Rotary extension/retraction device - Google Patents

Rotary extension/retraction device Download PDF

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Publication number
WO2020213523A1
WO2020213523A1 PCT/JP2020/016108 JP2020016108W WO2020213523A1 WO 2020213523 A1 WO2020213523 A1 WO 2020213523A1 JP 2020016108 W JP2020016108 W JP 2020016108W WO 2020213523 A1 WO2020213523 A1 WO 2020213523A1
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WO
WIPO (PCT)
Prior art keywords
tubular portion
main body
moving member
contact surface
tubular
Prior art date
Application number
PCT/JP2020/016108
Other languages
French (fr)
Japanese (ja)
Inventor
正樹 三田
敦史 曽我部
昇 新倉
Original Assignee
株式会社パイオラックス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社パイオラックス filed Critical 株式会社パイオラックス
Priority to JP2021514920A priority Critical patent/JP7171902B2/en
Publication of WO2020213523A1 publication Critical patent/WO2020213523A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K15/05—Inlet covers
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
    • F16H25/12—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation along the axis of rotation, e.g. gearings with helical grooves and automatic reversal or cams

Definitions

  • the present invention relates to, for example, a rotary telescopic device used for an opening / closing structure of a fuel lid of an automobile and configured to expand and contract while rotating by a pushing operation.
  • the fuel lid of an automobile is provided with a rod for receiving and supporting the lid with the lid closed with respect to the opening.
  • This rod often has a structure that expands and contracts by pushing the lid.
  • Patent Document 1 urges a main body member having a tubular portion, a moving member that is axially slidable and rotatably held with respect to the tubular portion, and a moving member.
  • a rotary telescopic device having a spring member, a protrusion formed on the outer periphery of the moving member, and a cam groove formed on the inner circumference of the tubular portion into which the protrusion is fitted.
  • the cam groove has a first fitting groove, a second fitting groove, a first guide groove, and a second guide groove, and they are arranged so as to orbit along the inner circumference of the tubular portion.
  • the main body member is composed of a first main body portion and a second main body portion divided in the axial direction of the tubular portion, and the first main body portion is assembled with the first main body portion and the second main body portion assembled.
  • a cam groove is formed by the facing end faces of the second main body and the second main body.
  • a plurality of locking protrusions are formed on the peripheral edge of the first main body, and a plurality of frame-shaped locking frame portions are provided on the peripheral edge of the second main body, and the locking protrusions and the locking protrusions are locked. By locking the frame portion, the first main body portion and the second main body portion can be assembled.
  • the rotary telescopic device it is necessary to assemble the first main body portion and the second main body portion so that the cam grooves communicate with each other in the circumferential direction on the inner circumference of the tubular portion. Further, in order to smoothly orbit the protrusion in the cam groove, the dimensional accuracy of the cam groove is required.
  • the first main body and the second main body are assembled by locking the plurality of locking protrusions and the plurality of locking frames to each other, and both main bodies are assembled. Since a cam groove is formed between the opposing end faces of both cylinders in the assembled state, depending on the dimensional accuracy of the locking protrusion and the locking frame, the first main body and the first 2 The accuracy of assembly with the main body may be hindered, which may affect the dimensional accuracy of the cam groove.
  • an object of the present invention is to provide a rotary telescopic device capable of accurately forming a cam groove formed in a tubular portion.
  • the rotary telescopic device of the present invention is composed of a first main body portion and a second main body portion, and has a main body member having a tubular portion having a circular inner circumference and a circular outer circumference.
  • a moving member that is arranged in the tubular portion and is held rotatably and axially movable with respect to the tubular portion, and a moving member that protrudes from one end of the tubular portion.
  • the tubular portion has a groove, and the tubular portion is composed of a first tubular portion and a second tubular portion formed by dividing the tubular portion in the axial direction, and the first tubular portion is provided in the first main body portion.
  • the second cylinder portion is provided in the second main body portion, and the shafts of the first cylinder portion and the second cylinder portion are provided in a state where the first main body portion and the second main body portion are assembled.
  • the end faces facing each other are provided with a contact surface that comes into contact with each other and a cam groove forming surface that forms the cam groove apart from each other.
  • the end faces of the first cylinder portion and the second cylinder portion facing each other in the axial direction are provided with contact surfaces that are in contact with each other. Since the cam groove forming surfaces that form the cam grooves apart from each other are provided respectively, when the first main body portion and the second main body portion are assembled, the first cylinder portion and the second cylinder portion A cam groove can be formed while the contact surfaces are brought into contact with each other, and the cam groove can be formed with high accuracy.
  • FIG. 5 is an enlarged perspective view of a state in which an engaging piece of a moving member is engaged with an engaging groove of an opening / closing member in the rotary telescopic device. It is an enlarged exploded perspective view when a part of the main body member constituting the rotary type telescopic device is seen through. It is an enlarged perspective view of the moving member which comprises the same rotary telescopic device. It is an enlarged perspective view of the same rotary telescopic device.
  • the operating state of the moving member with respect to the tubular portion in the rotary telescopic device is shown, (a) is an enlarged perspective view of a main part in a state where the moving member is pulled in from the tubular portion, and (b) is from the tubular portion. It is an enlarged perspective view of a main part in a state where a moving member protrudes.
  • the operating state of the moving member with respect to the tubular part in the rotary telescopic device is shown, and it is an enlarged plan view of the main part in the state where the moving member protrudes from the tubular part.
  • FIG. 5 is an enlarged perspective view of a main part of the rotary telescopic device in a state where the engaging piece of the moving member is not engaged with the engaging groove of the opening / closing member.
  • FIG. 5 is an enlarged perspective view of a main part in a state in which an engaging piece of a moving member is engaged with an engaging groove of an opening / closing member in the rotary telescopic device.
  • This rotary telescopic device is used for the opening / closing structure of the fuel lid, for example, as shown in FIG.
  • a fixing member 1 having a substantially cylindrical box shape is fixed to the peripheral edge of the fuel filler port of the vehicle body 1a, and an opening / closing member (fuel lid) is fixed to the fixing member 1 via a hinge portion 3. ) 5 is attached so that it can be opened and closed. Further, an annular flange 2 is projected from the opening side peripheral edge of the fixing member 1.
  • a recess 2a is provided on the side of the fixing member 1 opposite to the hinge portion 3 in the circumferential direction, and the rotary expansion / contraction device 10 of this embodiment (hereinafter referred to as “expansion / contraction device 10") is provided in the recess 2a. Is placed.
  • an engaging portion 6 is provided on the inner surface side of the opening / closing member 5.
  • the engaging portion 6 is composed of a pair of side wall portions 7 and 7 having a substantially L-shape and a connecting wall 8 connecting one end portions thereof, and has a portal frame shape.
  • An engaging groove 9 is provided between the pair of side wall portions 7, 7.
  • the telescopic device 10 of this embodiment is used for the opening / closing structure of the fuel lid as described above, but may also be used for, for example, an opening / closing structure for an automobile accessory case, furniture or daily necessities having a structure that opens / closes by pushing. Often, the mode of use, installation location, etc. are not particularly limited.
  • the telescopic device 10 of this embodiment includes a first main body portion 30 and a second main body portion 40, and has a tubular portion 15 (see FIG. 7) having a circular inner circumference.
  • a main body member 11 having a main body member 11, and a moving member 50 having a circular outer circumference and being arranged in a tubular portion 15 and held rotatably and axially movable with respect to the tubular portion 15, and this movement.
  • a first spring member S1 that urges the member 50 in a direction protruding from one end 15a of the tubular portion 15, a cam protrusion 55 formed on the outer periphery of the moving member 50, and a cam protrusion 55 formed on the tubular portion 15.
  • the portion 55 is fitted into the cam groove 20 (see FIGS. 8 and 9) for axially moving the moving member 50 while rotating the moving member 50.
  • a pair of cam grooves 20 and 20 are formed in the tubular portion 15, and a pair of cam protrusions 55 and 55 are provided in the moving member 50 correspondingly.
  • the first spring member S1 forms the "spring member" in the present invention.
  • the tubular portion 15 includes a first tubular portion 33 and a second tubular portion 43 formed by dividing the tubular portion 15 in the axial direction, and the first tubular portion 33 is the first.
  • the first main body portion 30 is provided, and the second cylinder portion 43 is provided in the second main body portion 40.
  • mounting holes 16 and 17 are formed in the first main body 30 and the second main body 40, respectively.
  • the expansion / contraction device 10 can be attached to the fixing member 1 through these attachment holes 16 and 17.
  • the first main body portion 30 has a base portion 31 having a substantially long box shape extending in one direction, and is substantially on one end side in the longitudinal direction of the base portion 31.
  • a cylindrical cover 32 having a cylindrical shape is provided.
  • the first tubular portion 33 is integrally formed inside the tubular cover 32.
  • the second tubular portion 43 of the second main body portion 40 is inserted into the tubular cover 32.
  • the tubular cover 32 is omitted from the first main body portion 30, and the first tubular portion 33 is shown by a solid line. It is described in.
  • a plurality of locking protrusions 34 are projected from the outer peripheral edge portion of the base portion 31 on the contact surface 31a side with the second main body portion 40.
  • a drive device 60 is housed and arranged on the other end side of the base portion 31 in the longitudinal direction.
  • the lock retainer 70 is accommodated and arranged between the tubular cover 32 and the arrangement portion of the drive device 60 of the base portion 31.
  • the drive device 60 has a worm gear 61, and the worm gear 61 is rotated in a predetermined direction by a power supply means (not shown).
  • the lock retainer 70 has a female screw 72 in which the worm gear 61 meshes with the lock retainer 70. Further, on one side of the lock retainer 70, a lock protrusion 73 that engages and disengages with the lock hole 57 (see FIG. 2) of the moving member 50 is continuously provided. Further, a second spring member S2 is interposed between the drive device 60 and the lock retainer 70, so that the lock retainer 70 is always urged toward the moving member 50 side.
  • the drive device 60 is adapted to slide the lock retainer 70 in a direction away from the moving member 50 by the rotation of the worm gear 61, and the lock protrusion 73 of the lock retainer 70 is moved by the moving member 50. It can be pulled out from the lock hole 57. Further, the lock protrusion 73 regulates the rotation and axial movement of the moving member 50 by entering the lock hole 57 of the moving member 50 (see FIG. 12), and exits from the lock hole 57 to regulate the moving member 50. Allows rotation and axial movement (see FIG. 11).
  • the slide operation of the lock retainer 70 by the drive device 60 may use not only a worm gear but also a ball screw, and the operating source may be not only a motor but also an electromagnetic solenoid or the like, and is not particularly limited.
  • a hook-shaped operation knob 75 extends from the back side of the lock retainer 70.
  • the operation knob 75 is inserted to the outside of the main body member 11 through the groove portion 41b (see FIG. 2) of the second main body portion 40. Then, when the worm gear 61 does not rotate due to a failure of the drive device 60 or the like and the lock retainer 70 cannot slide, the operation knob 75 manually slides the lock retainer 70 to move the lock protrusion 73. It is possible to remove the member 50 from the lock hole 57.
  • a cap 80 made of rubber, an elastic elastomer or the like is provided on one end side of the tubular cover 32 (the side opposite to the contact surface with the second main body 40). It is designed to be installed.
  • the cap 80 has a substantially cylindrical peripheral wall 81 and a flange portion 82 projecting from the peripheral edge on the proximal end side thereof. Further, on the inner circumference of the peripheral wall 81, an annular first elastic portion 83 projecting from the tip end side thereof and an annular second elastic portion 84 projecting from the proximal end side are provided. These elastic portions 83 and 84 elastically abut on the outer periphery of the moving member 50, and function as a sealing member that prevents fluid such as water and foreign matter such as dust from entering the tubular portion 15. At the same time, the moving member 50 urged by the first spring member S1 functions as a damper that suppresses an excessive speed when the moving member 50 jumps out from one end 15a of the tubular portion 15.
  • the second main body portion 40 has a base portion 41 having a substantially elongated plate shape extending in one direction corresponding to the first main body portion 30.
  • a bottomed cylindrical second tubular portion 43 forming the tubular portion 15 is provided together with the first tubular portion 33.
  • the second tubular portion 43 of this embodiment has a portion that protrudes in a tubular shape from the inner surface of the base portion 41 (the surface facing the first main body portion 30) and has an open tip. It is composed of a portion that protrudes in a tubular shape from the outer surface (the surface opposite to the inner surface) of the base portion 41 and the base end side is closed.
  • the outer diameter of the second tubular portion 43 is the same as the outer diameter of the first tubular portion 33, and has a size that can be inserted into the tubular cover 32 of the first main body portion 30. Therefore, as shown in FIG. 10, the second tubular portion 43 is inserted into the tubular cover 32 in a state where the first main body portion 30 and the second main body portion 40 are assembled to form the main body member 11. Therefore, the cam groove 20 is formed on the end faces of the first cylinder portion 33 and the second cylinder portion 43 facing each other in the axial direction.
  • cam groove 20 The configuration of the cam groove 20 will be described in detail later.
  • the tubular cover 32 By arranging the tubular cover 32 on the outside of the second tubular portion 43, the cam groove 20 is covered, so that foreign matter such as dust is prevented from entering the cam groove 20.
  • a plurality of frame-shaped locking frame portions 44 are provided on the outer peripheral edge portion of the base portion 41.
  • the first main body 30 and the second main body 40 are assembled by locking the plurality of locking protrusions 34 of the first main body 30 to these plurality of locking frame portions 44, respectively.
  • the main body member 11 is configured (see FIG. 6).
  • a columnar spring support pillar 41a is projected from the center of the inner surface of the bottom of the second cylinder portion 43.
  • the spring support column 41a is inserted into the first spring member S1 to make the first spring member S1 less likely to tilt.
  • the moving member 50 arranged in the tubular portion 15 has a substantially cylindrical shape, and as shown in FIG. 10, the first spring member S1 is opened from the axially proximal end side. Is to be inserted. As a result, the moving member 50 projects by a predetermined length from one end 15a of the tubular portion 15. Further, a small-diameter columnar portion 52 is projected from the center of the axial tip of the moving member 50. At the tip of the columnar portion 52, a strip-shaped engaging piece 53 having both ends in the longitudinal direction having an arc shape is continuously provided.
  • the engaging piece 53 rotates with the rotation of the moving member 50 to change its angle, and is engaged with and disengaged from the engaging portion 6 of the opening / closing member 5.
  • the opening / closing member 5 is opened from the opening of the fixing member 1, the opening / closing member 5 is engaged so as to be in the direction along the groove direction of the engaging groove 9 of the engaging portion 6 provided in the opening / closing member 5.
  • the longitudinal direction of the unit 53 is arranged (see FIG. 11), while when the opening / closing member 5 is closed with respect to the opening of the fixing member 1, the opening / closing member 5 is arranged with respect to the groove direction of the engaging groove 9.
  • the angle of the engaging piece 53 in the longitudinal direction is changed so as to be orthogonal to each other (see FIG. 12).
  • a pair of cam protrusions 55, 55 are provided on the outer circumference of the moving member 50 in the axial direction near the base end.
  • the outer circumference of each cam protrusion 55 has a circular shape.
  • These cam protrusions 55, 55 are fitted into the pair of cam grooves 20, 20 to rotate and axially move the moving member 50 in response to the pushing operation of the moving member 50.
  • the moving member 50 urged by the first spring member S1 has a pair of cam protrusions 55 and 55 having a pair of cam grooves 20 and 20 protruding side ends 21 and 21.
  • the moving member 50 is held so as not to come off from one end 15a of the tubular portion 15 so as to be fitted to the moving member 50.
  • the cam protrusion 55 in this embodiment is integrally formed with the moving member 50, it may be formed separately.
  • a square is located on the outer circumference of the moving member 50 on the axial base end side of the pair of cam protrusions 55, 55 and at a position orthogonal to the protrusion direction of the pair of cam protrusions 55, 55.
  • Lock holes 57, 57 having a hole shape are formed. The lock protrusion 73 of the lock retainer 70 is inserted into and removed from the lock hole 57 to lock the moving member 50 to the pushed state or release the locked state.
  • a tapered surface 59 whose height gradually decreases toward the most basic end is formed on the outer periphery of the base end portion of the moving member 50.
  • the tapered surface 59 is arranged so as to face the lock protrusion 73 of the lock retainer 70. Therefore, when the moving member 50 is pushed into the inner side of the tubular portion 15 (the side opposite to one end 15a of the tubular portion 15), the tapered surface 59 presses the lock protrusion 73 to push the lock retainer 70. , It is possible to push down the second spring member S2 in a direction away from the moving member 50 against the urging force.
  • the limit switch 85 is arranged on the inner surface side of the base portion 41 (see FIG. 2). As shown in FIG. 2, the limit switch 85 has a switch case 86 and a detection unit 87 arranged at the upper end of the switch case 86. The axial base end portion of the moving member 50 is brought into contact with and separated from the detection unit 87, and the pushed state of the moving member 50 with respect to the tubular portion 15 is detected.
  • a bus bar 90 is arranged on the inner surface side of the base portion 41. As shown in FIG. 2, the bus bar 90 has a first conductive portion 91 that conducts to the drive device 60, a second conductive portion 92 that conducts to the limit switch 85, and a connecting portion 93 that connects them. There is. Then, electric power from a power supply means (not shown) is supplied to the drive device 60 via the first conductive portion 91, and the limit switch 85 is supplied via the first conductive portion 91, the connecting portion 93, and the second conductive portion 92. It is supposed to be supplied to.
  • the cam groove 20 has a protruding side end portion 21 provided on the one end 15a side of the tubular portion 15 and the other end of the tubular portion 15 rather than the protruding side end portion 21. It has a push-in side end portion 23 provided on the side, and when the cam protrusion 55 is located at the protruding side end portion 21, the moving member 50 projects by a predetermined length from one end 15a of the tubular portion 15 ( 7 (b) and 8), when the cam protrusion 55 is located at the push-in side end 23, the moving member 50 is pulled in by a predetermined length from one end 15a of the tubular portion 15 (FIG. 7 (FIG. 7). a) and Fig. 9) are configured.
  • the protruding side end portion 21 is fitted with the cam protrusion 55 of the moving member 50 urged by the first spring member S1 to form a tubular portion.
  • the moving member 50 is held in a protruding state from one end 15a of 15.
  • the protruding side end portion 21 is formed with a straight line portion 21a extending linearly with a predetermined length along the axial direction of the tubular portion 15 toward the pushing side end portion 23.
  • the moving member 50 pushes the push-in side end portion 23 toward the inner side of the tubular portion 15 (the other end side opposite to one end 15a).
  • the cam protrusion 55 is fitted, the cam protrusion 55 is fitted to restrict further pushing.
  • the lock protrusion 73 of the lock retainer 70 urged by the second spring member S2 fits into the lock hole 57 of the moving member 50, so that the moving member 50 is one end 15a of the tubular portion 15. It is designed to be held in a state of being pulled in by a predetermined length from.
  • cam groove 20 of this embodiment is provided on one side of the circumferential direction (direction indicated by reference numeral R1 in FIG. 8) with respect to the axial center C (direction along the axial direction) of the tubular portion 15, hereinafter simply ".
  • a guide portion 25 is provided which is inclined in the circumferential direction (also referred to as “R1”) and connects the end portions 21 and 23 to each other.
  • the "axial direction” means the axial direction of the tubular portion 15 (the direction along the axial center C), and the “circumferential direction” means the tubular portion. It shall mean the circumferential direction of 15.
  • the guide unit 25 plays the following roles (1) and (2).
  • (1) When the moving member 50 is pushed in with the cam protruding portion 55 fitted to the protruding side end portion 21, the cam protruding portion 55 is moved to the other end side in the axial direction while being moved in the circumferential direction R1. Then, it is guided to the push-in side end portion 23, and the moving member 50 is pulled in by a predetermined length while rotating from one end 15a of the tubular portion 15.
  • the cam protrusion 55 positioned at the push-in side end 23, the lock protrusion 73 of the lock retainer 70 is pulled out from the lock hole 57 of the moving member 50 by the drive device 60, and the locked state is released.
  • the urging force of the first spring member S1 causes the cam protrusion 55 to be moved to the other side in the circumferential direction with respect to the axial center C of the tubular portion 15 (the direction indicated by reference numeral R2 in FIG. 9, hereinafter simply referred to as simply. While moving in the "circumferential direction R2"), it is moved to one end side in the axial direction and guided to the protruding side end portion 21, and the moving member 50 is rotated in the direction opposite to that at the time of pulling in. A predetermined length is projected from one end 15a of the tubular portion 15.
  • the end face on the other end side in the axial direction of the first cylinder portion 33 and the end face on the one end side in the axial direction of the second cylinder portion 43 face each other in the axial direction. It is formed by bringing a part of it into contact with the other and separating the rest.
  • the end faces of the first cylinder 33 and the second cylinder 43 facing each other in the axial direction are in contact with each other.
  • Contact surfaces 35 and 45 and cam groove forming surfaces 37 and 47 that form cam grooves 20 apart from each other are provided.
  • the plurality of locking frame portions 44 on the second main body 40 side are locked with the plurality of locking frame 44s on the first main body 30 side, so that the first main body 30 and the second main body 40 are engaged.
  • the contact surface 35 of the first cylinder portion 33 and the contact surface 45 of the second cylinder portion 43 are in contact with each other in the assembled state, and the cam groove forming surface 37 of the first cylinder portion 33 is formed.
  • a cam groove 20 is formed between the cam groove forming surface 47 and the cam groove forming surface 47 of the second tubular portion 43.
  • a pair of contact surfaces 35, 45 and cam groove forming surfaces 37, 47 having the above-described configuration are provided at equal intervals in the circumferential direction of the tubular portion 15. ..
  • the contact surface 35 provided on the end surface of the first cylinder portion 33 facing the second cylinder portion 43 is arranged on the protruding side end portion 21 side.
  • a first contact surface 35a extending along the circumferential direction
  • a second contact surface 35b arranged on the push-in side end 23 side and extending along the circumferential direction
  • a first contact surface 35a a first contact surface 35a
  • a second contact surface a second contact surface.
  • the contact surfaces 35b are connected to each other, and the third contact surface 35c extends so as to be inclined toward the circumferential direction R2 with respect to the axial center C of the tubular portion 15 to form a substantially crank shape.
  • the cam groove forming surfaces 37 provided on the facing end surfaces of the second cylinder portion 43 of the first cylinder portion 33 are a pair of straight portion forming surfaces extending in parallel with each other along the axial direction.
  • It is composed of a guide portion forming surface 37d extending while being inclined to the side, and a push end forming surface 37e extending along the axial direction from the other end of the guide portion forming surface 37d in the axial direction.
  • the push-in end portion forming surface 37e is shorter in the axial direction than the pair of straight portion forming surfaces 37a and 37b.
  • the contact surface 45 provided on the end surface of the second cylinder portion 43 facing the first cylinder portion 33 has a shape suitable for the contact surface 35 of the first cylinder portion 33. It has become. That is, the contact surface 45 is arranged on the protruding side end portion 21 side and extends along the circumferential direction, and the first contact surface 45a that abuts on the first contact surface 35a and the push-in side end portion 23.
  • the second contact surface 45b which is arranged on the side and extends along the circumferential direction and abuts on the second contact surface 35b, and the first contact surface 45a and the second contact surface 45b are connected to each other. It has a substantially crank shape and is formed of a third contact surface 45c that extends inclined toward the circumferential direction R2 with respect to the axial center C of the tubular portion 15 and abuts on the third contact surface 35c.
  • the cam groove forming surface 47 provided on the opposite end surface of the first cylinder portion 33 of the second cylinder portion 43 has a straight portion forming surface 47a extending along the axial direction and the straight line.
  • a guide portion forming surface 47b extending from the other end in the axial direction of the portion forming surface 47a while being inclined toward the circumferential direction R1 side with respect to the axial center C of the tubular portion 15, and a shaft of the guide portion forming surface 47b. It is composed of a push-end end forming surface 47c extending from the other end in the direction along the circumferential direction.
  • the straight portion forming surface 47a is formed shorter in the axial direction than the pair of straight portion forming surfaces 37a and 37b on the first cylinder portion 33 side.
  • the first contact surface 35a, the second contact surface 35b, and the third of the first cylinder portion 33 are assembled.
  • the contact surface 35c comes into contact with the first contact surface 45a, the second contact surface 45b, and the third contact surface 45c of the second tubular portion 43, respectively.
  • the straight portion forming surface 37a of the first tubular portion 33 and the straight portion forming surface 47a of the second tubular portion 43 are aligned in the circumferential direction and continuously extend in the axial direction.
  • the straight portion 21a of the cam groove 20 is formed by the straight portion forming surfaces 37a, 37b, 37c of the first tubular portion 33 and the straight portion forming surface 47a of the second tubular portion 43 while being linear. It has become.
  • the guide portion forming surface 37d of the first cylinder portion 33 and the guide of the second cylinder portion 43 is arranged apart from each other so that the guide portion 25 of the cam groove 20 is formed.
  • first contact surfaces 35a and 45a of both tubular portions 33 and 43 are provided so as to be located in the middle of the straight portion 21a in the axial direction. Further, as shown in FIG. 8, in this embodiment, the second contact surfaces 35b and 45b of both tubular portions 33 and 43 are provided so as to be located at the push-in side end portions 23.
  • first contact surfaces 35a, 45a, the second contact surfaces 35b, 45b, and the third contact surfaces 35c, 45c of both tubular portions 33, 43 are tubular portions. It is configured to be in contact with each other at three points in the axial direction of 15, but for example, the first contact surfaces and the third contact surfaces may be in contact with each other, or the second contact surfaces may be in contact with each other. And the third contact surfaces may be in contact with each other.
  • the contact surfaces of both tubular portions may be inclined with respect to the axial center of the tubular portion or may have a shape extending along the axial direction.
  • the third contact surface may extend along the axial direction, extend in a stepped shape, extend in a curved shape, or the like, and may be a combination of both main bodies.
  • the corresponding contact surfaces of both cylinders may be in contact with each other, and the contact points may be one place.
  • the cam groove forming surfaces of both cylinders are not particularly limited as long as the cam protrusions can move inside the cam groove forming surfaces.
  • the drive device 60, the second spring member S2, the lock retainer 70, the limit switch 85, and the bus bar 90 are arranged between the first main body 30 and the second main body 40, and the spring of the second main body 40 is arranged.
  • the first spring member S1 is attached to the outer periphery of the support column 41a. After that, the second tubular portion 43 of the second main body portion 40 is inserted into the tubular cover 32 of the first main body portion 30 and pushed in.
  • the contact surface 35 of the first cylinder portion 33 and the contact surface 45 of the second cylinder portion 43 come into contact with each other, so that the second cylinder portion 43 is pushed further.
  • a plurality of locking protrusions 34 on the first main body 30 side are locked to the plurality of locking frame portions 44 on the second main body 40 side, respectively, so that the first main body 30 and the second main body 30 and the second It can be assembled with the main body 40.
  • the expansion / contraction device 10 can be assembled by attaching the cap 80 to the outer circumference of the tip of the tubular portion 15.
  • the cam groove 20 can be formed in the tubular portion 15. Then, in the expansion / contraction device 10, when the first main body portion 30 and the second main body portion 40 are assembled, both of the contact surfaces 35 and 45 of both the tubular portions 33 and 43 are brought into contact with each other. Since the cam groove 20 can be formed by the cam groove forming surfaces 37 and 47 of the tubular portions 33 and 43, the cam groove 20 can be formed with high accuracy.
  • the contact surfaces 35 and 45 are brought into contact with each other at a position close to the cam groove forming surfaces 37 and 47 to form the cam groove 20. Therefore, it is possible to prevent the first cylinder portion 33 and the second cylinder portion 43 from tilting or rattling, and it is possible to easily align the axes of both cylinder portions 33 and 43. Therefore, a cam having a desired size can be used.
  • the groove 20 can be formed with high accuracy.
  • expansion / contraction device 10 assembled as described above operates as follows.
  • each cam protrusion 55 is fitted to the protruding end 21 of each cam groove 20 (here, the cam protrusion 55 is a straight line constituting the straight portion 21a).
  • the moving member 50 is projected by a predetermined length from one end 15a of the tubular portion 15 (in a state of being in contact with the portion forming surfaces 37a, 37b, 37c).
  • the engaging piece 53 of the moving member 50 in this state passes through the engaging groove 9 of the engaging portion 6 and is in contact with the inner surface side of the opening / closing member 5. Can be opened and closed with respect to the peripheral edge of the opening of the fixing member 1.
  • the lock protrusion 73 of the lock retainer 70 urged by the second spring member S2 is arranged so as to face the tapered surface 59 at the most basic end of the moving member 50. ing.
  • each cam protrusion 55 fitted to each protruding side end portion 21 moves a predetermined distance in the axial direction along the straight portion 21a, and then is guided by the guide portion 25, respectively, and the moving member 50 is moved. While rotating in a predetermined direction, the engaging piece 53 is gradually pulled into the tubular portion 15 and the engaging piece 53 is rotated.
  • each cam protrusion 55 abuts on the push-side end 23 of each cam groove 20, and further push-in is restricted.
  • the lock protrusion 73 of the lock retainer 70 pressed by the urging force of the second spring member S2 enters the lock hole 57 of the moving member 50 and engages with the lock retainer 70 from one end 15a of the tubular portion 15.
  • the moving member 50 can be held in a retracted state by a predetermined length.
  • the engaging piece 53 of the moving member 50 is orthogonal to the groove direction of the engaging groove 9 of the engaging portion 6 of the opening / closing member 5 in the longitudinal direction of the engaging piece 53. Therefore, the opening / closing member 5 can be locked in a closed state with respect to the peripheral edge of the opening of the fixing member 1.
  • the drive device 60 is driven, and the lock retainer 70 is moved against the urging force of the second spring member S2 via the worm gear 61. It is pushed down to pull out the lock protrusion 73 from the lock hole 57 of the moving member 50. Then, the moving member 50 is pushed by the urging force of the first spring member S1, and each cam protrusion 55 comes out from the pushing side end portion 23 of each cam groove 20, so that the pushed state of the moving member 50 is released. ..
  • each cam protrusion 55 is guided by each guide portion 25, and the moving member 50 gradually protrudes from one end 15a of the tubular portion 15 while rotating in a direction opposite to the rotation direction at the time of pushing. ..
  • the moving member 50 gradually protrudes from one end 15a of the tubular portion 15 while rotating in a direction opposite to the rotation direction at the time of pushing. ..
  • further protrusion of the moving member 50 is restricted, and as shown in FIG. 11, the engaging piece Since the 53 is in the direction along the groove direction of the engaging groove 9 of the engaging portion 6 of the opening / closing member 5, the lock of the closed state of the opening / closing member 5 is released.
  • the opening / closing member 5 is pushed by the moving member 50 and the opening / closing member 5 is lifted by a predetermined height from the opening of the fixing member 1 (lifter operation), the opening / closing member 5 can be opened manually.
  • the rotary telescopic device 10 in this embodiment has the lock retainer 70 that engages with the moving member 50 in the state of being pushed into the tubular portion 15 and holds the pushed state of the moving member 50. Since it has a drive device 60 that is housed in the main body member 11 and drives the lock retainer 70 to release the pushed state of the moving member 50, the lid opening / closing structure of the fuel lid as described above is provided. Can be suitably used for. Further, by providing the lock retainer 70 for holding the pushed state of the moving member 50, it is not a rotating cam groove as in the rotary telescopic device of Patent Document 1, but in the circumferential direction and the axial direction of the tubular portion 15.
  • the cam groove 20 can be formed with a simple shape extending by a predetermined length and a short groove length, it is possible to secure a long length of the contact surfaces 35 and 45 of both cylinder portions 33 and 43. The dimensional accuracy of the cam groove 20 can be further improved.
  • the cam groove 20 is provided on the protruding side end portion 21 provided on the one end 15a side of the tubular portion 15 and on the other end side of the tubular portion 15 with respect to the protruding side end portion 21. It has a push-in side end portion 23 provided, and the protruding side end portion 21 extends linearly with a predetermined length along the axial direction of the tubular portion 15 toward the push-in side end portion 23. , The straight line portion 21a is formed. Therefore, when the moving member 50 urged by the first spring member S1 protrudes from one end 15a of the tubular portion 15, even if the spring force of the first spring member S1 weakens, the cam protrusion 55 is a straight portion.
  • the rotary telescopic device 10 Since it passes through 21a, the resistance of the cam protrusion 55 to the inner circumference of the cam groove can be reduced, and the moving member 50 can be reliably projected from one end 15a of the tubular portion 15.
  • the fuel lid opening / closing member 5
  • the fuel lid opening / closing member 5
  • a part of the contact surfaces 35 and 45 is arranged in the middle of the straight line portion 21a constituting the cam groove 20. Therefore, as shown in FIGS. 8 and 9, even if there is a slight step on the contact surfaces 35, 47 (here, the first contact surfaces 35a, 45a) in which both the tubular portions 33, 43 are in contact with each other. Since the contact surfaces 35a and 47a are located in the middle of the straight portion 21a, they are unlikely to affect the movement of the cam protrusion 55 moving in the cam groove 20, particularly the rotational movement.
  • a part of the contact surfaces 35 and 45 is arranged at the push-in side end portion 23 constituting the cam groove 20. That is, as shown in FIGS. 7A and 8, since the third contact surfaces 35c and 45c of both cylinder portions 33 and 43 are arranged on the push-in side end portion 23, the moving member 50 is pushed in. Even if there is a step at the position where the cam protrusion 55 stops, it does not easily affect the rotational movement and the axial movement of the moving member 50.
  • the contact surfaces 35 and 45 of both the tubular portions 33 and 43 are first formed along the circumferential direction on the protruding side end portion 21 side.
  • the third contact surfaces 35c and 45c are in contact with each other, the positions of the cam groove forming surfaces 37 and 47 in the axial direction and the circumferential direction can be regulated at closer positions, and the accuracy of the cam groove 20 can be improved. It can be further enhanced.
  • the first contact surfaces 35a, 45a and the third contact surfaces 35c, 45c of both cylinder portions 33, 43 are in contact with each other, and the second contact surfaces 35b, 45b and the third contact surface are in contact with each other. Even if the 35c and 45c are in contact with each other, the same effect as described above can be obtained.
  • the present invention is not limited to the above-described embodiments, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. ..
  • Rotary telescopic device (expandable device) 11
  • Main body member 15
  • Cylindrical part 20
  • Cam groove 21 Protruding side end 21a
  • Straight part 23
  • Pushing side end 30
  • First main body 33
  • First cylinder 35
  • Contact surface 37
  • Cam groove forming surface 40
  • Second main body 43
  • Second Cylinder 45
  • Cam groove forming surface 50
  • Moving member 55
  • Cam protrusion 60
  • Drive device 61
  • Worm gear 70
  • Lock retainer 80 Cap 85

Abstract

Provided is a rotary extension/retraction device with which a cam groove formed in a tubular part can be formed with good precision. This rotary extension/retraction device 10 has: a main body member 11 comprising a first main body section 30 and a second main body section 40 and having a tubular part 15; a movement member 50 held in the tubular part 15; a spring member S1; cam protrusions 55; and cam grooves 20. The tubular part 15 comprises a first tube section 33 and a second tube section 43, the first tube section 33 is provided on the first main body section 30, the second tube section 43 is provided on the second tube section 43, and contact surfaces 35, 45, which contact each other, and cam groove formation surfaces 37, 47, which are separated from each other and form cam grooves 20, are provided on respective opposing end faces of the tube sections 33, 43 when the main body sections 30 and 40 are in an assembled state.

Description

回転式伸縮装置Rotary telescopic device
　本発明は、例えば、自動車のフューエルリッドの開閉構造に用いられ、押し込み動作によって回転しながら伸縮するように構成された、回転式伸縮装置に関する。 The present invention relates to, for example, a rotary telescopic device used for an opening / closing structure of a fuel lid of an automobile and configured to expand and contract while rotating by a pushing operation.
　例えば、自動車のフューエルリッドには、開口部に対してリッドを閉じた状態で、リッドを受け止めて支持するためのロッドが配置されている。このロッドは、リッドの押し込み動作によって伸縮する構造とされていることが多い。 For example, the fuel lid of an automobile is provided with a rod for receiving and supporting the lid with the lid closed with respect to the opening. This rod often has a structure that expands and contracts by pushing the lid.
　このような構造を有する装置として、下記特許文献１には、筒状部を有する本体部材と、筒状部に対して軸方向スライド及び回転可能に保持される移動部材と、移動部材を付勢するバネ部材と、移動部材外周に形成された突部と、筒状部内周に形成され、突部が嵌入するカム溝とを有する、回転式伸縮装置が記載されている。前記カム溝は、第１嵌合溝と、第２嵌合溝と、第１ガイド溝と、第２ガイド溝とを有し、それらが筒状部内周に沿って周回するように配置されている。更に、前記本体部材は、筒状部の軸方向に分割された第１本体部と第２本体部とからなり、第１本体部及び第２本体部を組付けた状態で、第１本体部及び第２本体部の対向する端面によって、カム溝が形成されるようになっている。なお、第１本体部の周縁に複数の係止突部が形成され、第２本体部の周縁に枠状をなした複数の係止枠部が設けられており、係止突部と係止枠部とが係止することで、第１本体部と第２本体部とが組付けられるようになっている。 As a device having such a structure, Patent Document 1 below urges a main body member having a tubular portion, a moving member that is axially slidable and rotatably held with respect to the tubular portion, and a moving member. Described is a rotary telescopic device having a spring member, a protrusion formed on the outer periphery of the moving member, and a cam groove formed on the inner circumference of the tubular portion into which the protrusion is fitted. The cam groove has a first fitting groove, a second fitting groove, a first guide groove, and a second guide groove, and they are arranged so as to orbit along the inner circumference of the tubular portion. There is. Further, the main body member is composed of a first main body portion and a second main body portion divided in the axial direction of the tubular portion, and the first main body portion is assembled with the first main body portion and the second main body portion assembled. A cam groove is formed by the facing end faces of the second main body and the second main body. A plurality of locking protrusions are formed on the peripheral edge of the first main body, and a plurality of frame-shaped locking frame portions are provided on the peripheral edge of the second main body, and the locking protrusions and the locking protrusions are locked. By locking the frame portion, the first main body portion and the second main body portion can be assembled.
国際公開ＷＯ２０１８／０３８０３４Ａ１International release WO2018 / 038034A1
　上記回転式伸縮装置では、筒状部内周において、カム溝が周方向に連通するように、第１本体部と第２本体部とを組付ける必要がある。また、突部をカム溝内においてスムーズに周回移動させるためには、カム溝の寸法精度が要求される。 In the rotary telescopic device, it is necessary to assemble the first main body portion and the second main body portion so that the cam grooves communicate with each other in the circumferential direction on the inner circumference of the tubular portion. Further, in order to smoothly orbit the protrusion in the cam groove, the dimensional accuracy of the cam groove is required.
　しかし、上記回転式伸縮装置では、複数の係止突部と複数の係止枠部とを互いに係止させることで、第１本体部と第２本体部とを組付けており、両本体部を組付けた状態で、両筒部の対向端面の間にカム溝が形成されるようになっているので、係止突部や係止枠部の寸法精度によっては、第１本体部と第２本体部との組付け精度に支障が生じ、カム溝の寸法精度に影響が出ることがあった。 However, in the rotary telescopic device, the first main body and the second main body are assembled by locking the plurality of locking protrusions and the plurality of locking frames to each other, and both main bodies are assembled. Since a cam groove is formed between the opposing end faces of both cylinders in the assembled state, depending on the dimensional accuracy of the locking protrusion and the locking frame, the first main body and the first 2 The accuracy of assembly with the main body may be hindered, which may affect the dimensional accuracy of the cam groove.
　したがって、本発明の目的は、筒状部に形成されるカム溝を精度良く形成することができる、回転式伸縮装置を提供することにある。 Therefore, an object of the present invention is to provide a rotary telescopic device capable of accurately forming a cam groove formed in a tubular portion.
　上記目的を達成するため、本発明の回転式伸縮装置は、第１本体部及び第２本体部からなり、内周が円形状をなした筒状部を有する本体部材と、外周が円形状をなすと共に、前記筒状部内に配置されて、同筒状部に対して回転可能に且つ軸方向移動可能に保持される移動部材と、該移動部材を前記筒状部の一端から突出する方向に付勢するバネ部材と、前記移動部材の外周に形成されたカム突部と、前記筒状部に形成され、前記カム突部が嵌入して、前記移動部材を回転させつつ軸方向移動させるカム溝とを有し、前記筒状部は、前記筒状部を軸方向に分割してなる第１筒部及び第２筒部からなり、前記第１筒部が前記第１本体部に設けられ、前記第２筒部が前記第２本体部に設けられており、前記第１本体部と前記第２本体部とを組付けた状態で、前記第１筒部及び前記第２筒部の軸方向に対向する端面には、互いに当接する当接面と、互いに離れて前記カム溝を形成するカム溝形成面とが、それぞれ設けられられていることを特徴とする。 In order to achieve the above object, the rotary telescopic device of the present invention is composed of a first main body portion and a second main body portion, and has a main body member having a tubular portion having a circular inner circumference and a circular outer circumference. A moving member that is arranged in the tubular portion and is held rotatably and axially movable with respect to the tubular portion, and a moving member that protrudes from one end of the tubular portion. A cam to be urged, a cam protrusion formed on the outer periphery of the moving member, and a cam formed in the tubular portion and fitted with the cam protrusion to rotate the moving member and move it in the axial direction. The tubular portion has a groove, and the tubular portion is composed of a first tubular portion and a second tubular portion formed by dividing the tubular portion in the axial direction, and the first tubular portion is provided in the first main body portion. The second cylinder portion is provided in the second main body portion, and the shafts of the first cylinder portion and the second cylinder portion are provided in a state where the first main body portion and the second main body portion are assembled. The end faces facing each other are provided with a contact surface that comes into contact with each other and a cam groove forming surface that forms the cam groove apart from each other.
　本発明によれば、第１本体部と第２本体部とを組付けた状態で、第１筒部及び第２筒部の軸方向に対向する端面には、互いに当接する当接面と、互いに離れてカム溝を形成するカム溝形成面とが、それぞれ設けられられているので、第１本体部と第２本体部とを組付けたときに、第１筒部及び第２筒部の当接面どうしを互いに当接させつつ、カム溝を形成することができ、カム溝を精度良く形成することができる。 According to the present invention, in a state where the first main body portion and the second main body portion are assembled, the end faces of the first cylinder portion and the second cylinder portion facing each other in the axial direction are provided with contact surfaces that are in contact with each other. Since the cam groove forming surfaces that form the cam grooves apart from each other are provided respectively, when the first main body portion and the second main body portion are assembled, the first cylinder portion and the second cylinder portion A cam groove can be formed while the contact surfaces are brought into contact with each other, and the cam groove can be formed with high accuracy.
本発明に係る回転式伸縮装置の、一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the rotary telescopic device which concerns on this invention. 同回転式伸縮装置の分解斜視図である。It is an exploded perspective view of the same rotary telescopic device. 同回転式伸縮装置において、移動部材の係合片が開閉部材の係合溝に係合した状態の拡大斜視図である。FIG. 5 is an enlarged perspective view of a state in which an engaging piece of a moving member is engaged with an engaging groove of an opening / closing member in the rotary telescopic device. 同回転式伸縮装置を構成する本体部材において、一部を透視した場合の拡大分解斜視図である。It is an enlarged exploded perspective view when a part of the main body member constituting the rotary type telescopic device is seen through. 同回転式伸縮装置を構成する移動部材の拡大斜視図である。It is an enlarged perspective view of the moving member which comprises the same rotary telescopic device. 同回転式伸縮装置の拡大斜視図である。It is an enlarged perspective view of the same rotary telescopic device. 同回転式伸縮装置における筒状部に対する移動部材の動作状態を示しており、（ａ）は筒状部から移動部材が引き込まれた状態の要部拡大斜視図、（ｂ）は筒状部から移動部材が突出した状態の要部拡大斜視図である。The operating state of the moving member with respect to the tubular portion in the rotary telescopic device is shown, (a) is an enlarged perspective view of a main part in a state where the moving member is pulled in from the tubular portion, and (b) is from the tubular portion. It is an enlarged perspective view of a main part in a state where a moving member protrudes. 同回転式伸縮装置における筒状部に対する移動部材の動作状態を示しており、筒状部から移動部材が突出した状態の要部拡大平面図である。The operating state of the moving member with respect to the tubular part in the rotary telescopic device is shown, and it is an enlarged plan view of the main part in the state where the moving member protrudes from the tubular part. 同回転式伸縮装置における筒状部に対する移動部材の動作状態を示しており、筒状部から移動部材が引き込まれた状態の要部拡大平面図である。The operating state of the moving member with respect to the tubular part in the rotary telescopic device is shown, and it is an enlarged plan view of the main part in the state where the moving member is pulled in from the tubular part. 同回転式伸縮装置の要部拡大断面図である。It is an enlarged sectional view of the main part of the rotary telescopic device. 同回転式伸縮装置において、移動部材の係合片が開閉部材の係合溝に係合していない状態の要部拡大斜視図である。FIG. 5 is an enlarged perspective view of a main part of the rotary telescopic device in a state where the engaging piece of the moving member is not engaged with the engaging groove of the opening / closing member. 同回転式伸縮装置において、移動部材の係合片が開閉部材の係合溝に係合した状態の要部拡大斜視図である。FIG. 5 is an enlarged perspective view of a main part in a state in which an engaging piece of a moving member is engaged with an engaging groove of an opening / closing member in the rotary telescopic device.
　以下、図面を参照して、本発明に係る回転式伸縮装置の実施形態について説明する。 Hereinafter, embodiments of the rotary telescopic device according to the present invention will be described with reference to the drawings.
　この回転式伸縮装置は、例えば、図１に示すように、フューエルリッドの開閉構造に用いられるものである。図１に示すように、車体１ａの燃料給油口周縁には、略円筒箱状をなした固定部材１が固定されており、該固定部材１には、ヒンジ部３を介して開閉部材（フューエルリッド）５が開閉可能に取付けられている。また、固定部材１の開口部側周縁からは、環状のフランジ２が突設されている。更に、固定部材１のヒンジ部３とは周方向反対側には、凹部２ａが設けられており、該凹部２ａに、この実施形態の回転式伸縮装置１０（以下、「伸縮装置１０」という）が配置されている。また、前記開閉部材５の内面側には、係合部６が設けられている。この係合部６は、略Ｌ字状をなした一対の側壁部７，７と、それらの一端部どうしを連結した連結壁８とからなり、門形枠状をなしている。なお、一対の側壁部７，７の間には、係合溝９が設けられている。 This rotary telescopic device is used for the opening / closing structure of the fuel lid, for example, as shown in FIG. As shown in FIG. 1, a fixing member 1 having a substantially cylindrical box shape is fixed to the peripheral edge of the fuel filler port of the vehicle body 1a, and an opening / closing member (fuel lid) is fixed to the fixing member 1 via a hinge portion 3. ) 5 is attached so that it can be opened and closed. Further, an annular flange 2 is projected from the opening side peripheral edge of the fixing member 1. Further, a recess 2a is provided on the side of the fixing member 1 opposite to the hinge portion 3 in the circumferential direction, and the rotary expansion / contraction device 10 of this embodiment (hereinafter referred to as "expansion / contraction device 10") is provided in the recess 2a. Is placed. Further, an engaging portion 6 is provided on the inner surface side of the opening / closing member 5. The engaging portion 6 is composed of a pair of side wall portions 7 and 7 having a substantially L-shape and a connecting wall 8 connecting one end portions thereof, and has a portal frame shape. An engaging groove 9 is provided between the pair of side wall portions 7, 7.
　この実施形態の伸縮装置１０は、上記のようなフューエルリッドの開閉構造に利用されるが、例えば、自動車の小物入れの開閉構造や、押し込むことで開閉する構造の家具や日用品等に利用してもよく、使用態様や設置場所等は特に限定されない。 The telescopic device 10 of this embodiment is used for the opening / closing structure of the fuel lid as described above, but may also be used for, for example, an opening / closing structure for an automobile accessory case, furniture or daily necessities having a structure that opens / closes by pushing. Often, the mode of use, installation location, etc. are not particularly limited.
　そして、図２に示すように、この実施形態の伸縮装置１０は、第１本体部３０及び第２本体部４０からなり、内周が円形状をなした筒状部１５（図７参照）を有する本体部材１１と、外周が円形状をなすと共に、筒状部１５内に配置されて、筒状部１５に対して回転可能に且つ軸方向移動可能に保持される移動部材５０と、この移動部材５０を筒状部１５の一端１５ａから突出する方向に付勢する第１バネ部材Ｓ１と、移動部材５０の外周に形成されたカム突部５５と、筒状部１５に形成され、カム突部５５が嵌入して、移動部材５０を回転させつつ軸方向移動させるカム溝２０（図８及び図９参照）とを有している。この実施形態では、筒状部１５に一対のカム溝２０，２０が形成され、これに対応して、移動部材５０に、一対のカム突部５５，５５が突設されている。なお、前記第１バネ部材Ｓ１が、本発明における「バネ部材」をなしている。 Then, as shown in FIG. 2, the telescopic device 10 of this embodiment includes a first main body portion 30 and a second main body portion 40, and has a tubular portion 15 (see FIG. 7) having a circular inner circumference. A main body member 11 having a main body member 11, and a moving member 50 having a circular outer circumference and being arranged in a tubular portion 15 and held rotatably and axially movable with respect to the tubular portion 15, and this movement. A first spring member S1 that urges the member 50 in a direction protruding from one end 15a of the tubular portion 15, a cam protrusion 55 formed on the outer periphery of the moving member 50, and a cam protrusion 55 formed on the tubular portion 15. The portion 55 is fitted into the cam groove 20 (see FIGS. 8 and 9) for axially moving the moving member 50 while rotating the moving member 50. In this embodiment, a pair of cam grooves 20 and 20 are formed in the tubular portion 15, and a pair of cam protrusions 55 and 55 are provided in the moving member 50 correspondingly. The first spring member S1 forms the "spring member" in the present invention.
　また、図７～９に示すように、筒状部１５は、筒状部１５を軸方向に分割してなる第１筒部３３及び第２筒部４３からなり、第１筒部３３が第１本体部３０に設けられ、第２筒部４３が第２本体部４０に設けられている。図２や図３に示すように、第１本体部３０及び第２本体部４０には、取付孔１６，１７がそれぞれ形成されている。これらの取付孔１６，１７を介して、伸縮装置１０が固定部材１に取付けられるようになっている。 Further, as shown in FIGS. 7 to 9, the tubular portion 15 includes a first tubular portion 33 and a second tubular portion 43 formed by dividing the tubular portion 15 in the axial direction, and the first tubular portion 33 is the first. The first main body portion 30 is provided, and the second cylinder portion 43 is provided in the second main body portion 40. As shown in FIGS. 2 and 3, mounting holes 16 and 17 are formed in the first main body 30 and the second main body 40, respectively. The expansion / contraction device 10 can be attached to the fixing member 1 through these attachment holes 16 and 17.
　図２や図３に示すように、第１本体部３０は、一方向に長く伸びる略長箱状をなしたベース部３１を有しており、このベース部３１の長手方向一端側に、略円筒状をなした筒状カバー３２が設けられている。この筒状カバー３２の内側に、前記第１筒部３３が一体形成されている。図１０に示すように、この筒状カバー３２内には、第２本体部４０の第２筒部４３が挿入されるようになっている。なお、図４、図７、図８、図９においては、構造を分かりやすく説明するため、便宜上、第１本体部３０については、筒状カバー３２を省略して、第１筒部３３を実線で記載している。 As shown in FIGS. 2 and 3, the first main body portion 30 has a base portion 31 having a substantially long box shape extending in one direction, and is substantially on one end side in the longitudinal direction of the base portion 31. A cylindrical cover 32 having a cylindrical shape is provided. The first tubular portion 33 is integrally formed inside the tubular cover 32. As shown in FIG. 10, the second tubular portion 43 of the second main body portion 40 is inserted into the tubular cover 32. In addition, in FIG. 4, FIG. 7, FIG. 8, and FIG. 9, in order to explain the structure in an easy-to-understand manner, for convenience, the tubular cover 32 is omitted from the first main body portion 30, and the first tubular portion 33 is shown by a solid line. It is described in.
　また、ベース部３１の、第２本体部４０との当接面３１ａ側の外周縁部には、複数の係止突部３４が突設されている。更に図３に示すように、ベース部３１の長手方向他端側には、駆動装置６０が収容配置されている。また、ベース部３１の、筒状カバー３２と駆動装置６０の配置部との間には、ロックリテーナ７０が収容配置される。図２に示すように、駆動装置６０はウォームギヤ６１を有しており、図示しない電力供給手段によって、ウォームギヤ６１が所定方向に回転するようになっている。 Further, a plurality of locking protrusions 34 are projected from the outer peripheral edge portion of the base portion 31 on the contact surface 31a side with the second main body portion 40. Further, as shown in FIG. 3, a drive device 60 is housed and arranged on the other end side of the base portion 31 in the longitudinal direction. Further, the lock retainer 70 is accommodated and arranged between the tubular cover 32 and the arrangement portion of the drive device 60 of the base portion 31. As shown in FIG. 2, the drive device 60 has a worm gear 61, and the worm gear 61 is rotated in a predetermined direction by a power supply means (not shown).
　図２に示すように、前記ロックリテーナ７０は、中央部にウォームギヤ６１が歯合する雌ネジ７２を有している。また、ロックリテーナ７０の一側部には、移動部材５０のロック孔５７（図２参照）に係脱するロック突部７３が連設されている。更に、駆動装置６０とロックリテーナ７０との間には、第２バネ部材Ｓ２が介装されており、ロックリテーナ７０を移動部材５０側に向けて、常時付勢するようになっている。 As shown in FIG. 2, the lock retainer 70 has a female screw 72 in which the worm gear 61 meshes with the lock retainer 70. Further, on one side of the lock retainer 70, a lock protrusion 73 that engages and disengages with the lock hole 57 (see FIG. 2) of the moving member 50 is continuously provided. Further, a second spring member S2 is interposed between the drive device 60 and the lock retainer 70, so that the lock retainer 70 is always urged toward the moving member 50 side.
　そして、前記駆動装置６０は、ウォームギヤ６１の回転によって、移動部材５０に対して、ロックリテーナ７０を離反する方向にスライドさせるようになっており、ロックリテーナ７０のロック突部７３を移動部材５０のロック孔５７から抜き出し可能となっている。また、ロック突部７３は、移動部材５０のロック孔５７内に入り込むことで、移動部材５０の回転及び軸方向移動を規制し（図１２参照）、ロック孔５７から抜け出ることで、移動部材５０の回転及び軸方向移動を許容する（図１１参照）。 The drive device 60 is adapted to slide the lock retainer 70 in a direction away from the moving member 50 by the rotation of the worm gear 61, and the lock protrusion 73 of the lock retainer 70 is moved by the moving member 50. It can be pulled out from the lock hole 57. Further, the lock protrusion 73 regulates the rotation and axial movement of the moving member 50 by entering the lock hole 57 of the moving member 50 (see FIG. 12), and exits from the lock hole 57 to regulate the moving member 50. Allows rotation and axial movement (see FIG. 11).
　なお、駆動装置６０によるロックリテーナ７０のスライド動作は、ウォームギヤのみならず、ボールネジを利用してもよく、また、作動源としては、モーターだけではなく、電磁ソレノイド等でもよく、特に限定はされない。 The slide operation of the lock retainer 70 by the drive device 60 may use not only a worm gear but also a ball screw, and the operating source may be not only a motor but also an electromagnetic solenoid or the like, and is not particularly limited.
　更に、ロックリテーナ７０の背面側からは、フック状の操作ノブ７５が延設されている。この操作ノブ７５は、第２本体部４０の溝部４１ｂ（図２参照）を通して、本体部材１１の外部に挿出される。そして、この操作ノブ７５は、駆動装置６０の故障等によってウォームギヤ６１が回転せず、ロックリテーナ７０がスライド不能となった場合に、手動でロックリテーナ７０をスライドさせて、ロック突部７３を移動部材５０のロック孔５７から抜き外すことを可能とする。 Further, a hook-shaped operation knob 75 extends from the back side of the lock retainer 70. The operation knob 75 is inserted to the outside of the main body member 11 through the groove portion 41b (see FIG. 2) of the second main body portion 40. Then, when the worm gear 61 does not rotate due to a failure of the drive device 60 or the like and the lock retainer 70 cannot slide, the operation knob 75 manually slides the lock retainer 70 to move the lock protrusion 73. It is possible to remove the member 50 from the lock hole 57.
　また、図２や図６に示すように、前記筒状カバー３２の一端側（第２本体部４０との当接面とは反対側）には、ゴムや弾性エラストマー等からなる、キャップ８０が装着されるようになっている。 Further, as shown in FIGS. 2 and 6, a cap 80 made of rubber, an elastic elastomer or the like is provided on one end side of the tubular cover 32 (the side opposite to the contact surface with the second main body 40). It is designed to be installed.
　図１０を併せて参照すると、このキャップ８０は、略円筒状をなした周壁８１と、その基端側周縁から突設したフランジ部８２とを有している。また、周壁８１の内周には、その先端側に突設された環状の第１弾性部８３と、基端側に突設された環状の第２弾性部８４とが設けられている。これらの弾性部８３，８４は、移動部材５０の外周に弾性的に当接して、水等の流体や粉塵等の異物が、筒状部１５内に侵入することを抑制するシール部材として機能すると共に、第１バネ部材Ｓ１で付勢された移動部材５０が、筒状部１５の一端１５ａから飛び出す際の過剰な速度を抑制するダンパーとして機能する。 With reference to FIG. 10, the cap 80 has a substantially cylindrical peripheral wall 81 and a flange portion 82 projecting from the peripheral edge on the proximal end side thereof. Further, on the inner circumference of the peripheral wall 81, an annular first elastic portion 83 projecting from the tip end side thereof and an annular second elastic portion 84 projecting from the proximal end side are provided. These elastic portions 83 and 84 elastically abut on the outer periphery of the moving member 50, and function as a sealing member that prevents fluid such as water and foreign matter such as dust from entering the tubular portion 15. At the same time, the moving member 50 urged by the first spring member S1 functions as a damper that suppresses an excessive speed when the moving member 50 jumps out from one end 15a of the tubular portion 15.
　一方、図２及び図３に示すように、第２本体部４０は、上記第１本体部３０に対応して一方向に長く伸びる略長板状をなしたベース部４１を有している。このベース部４１の長手方向一端側には、前記第１筒部３３と併せて、筒状部１５を形成する有底円筒状の第２筒部４３が設けられている。図２や図１０に示すように、この実施形態の第２筒部４３は、ベース部４１の内面（第１本体部３０との対向面）から筒状に突出し、先端が開口した部分と、ベース部４１の外面（内面とは反対面）から筒状に突出し、基端側が閉塞された部分とからなる。 On the other hand, as shown in FIGS. 2 and 3, the second main body portion 40 has a base portion 41 having a substantially elongated plate shape extending in one direction corresponding to the first main body portion 30. On one end side of the base portion 41 in the longitudinal direction, a bottomed cylindrical second tubular portion 43 forming the tubular portion 15 is provided together with the first tubular portion 33. As shown in FIGS. 2 and 10, the second tubular portion 43 of this embodiment has a portion that protrudes in a tubular shape from the inner surface of the base portion 41 (the surface facing the first main body portion 30) and has an open tip. It is composed of a portion that protrudes in a tubular shape from the outer surface (the surface opposite to the inner surface) of the base portion 41 and the base end side is closed.
　また、第２筒部４３の外径は、前記第１筒部３３の外径と同一で、かつ、第１本体部３０の筒状カバー３２内に挿入可能な寸法となっている。そのため、図１０に示すように、第１本体部３０と第２本体部４０とが組付けられて本体部材１１が構成された状態で、筒状カバー３２内に第２筒部４３が挿入されて、第１筒部３３及び第２筒部４３の軸方向に対向する端面に、カム溝２０が形成されるようになっている。 Further, the outer diameter of the second tubular portion 43 is the same as the outer diameter of the first tubular portion 33, and has a size that can be inserted into the tubular cover 32 of the first main body portion 30. Therefore, as shown in FIG. 10, the second tubular portion 43 is inserted into the tubular cover 32 in a state where the first main body portion 30 and the second main body portion 40 are assembled to form the main body member 11. Therefore, the cam groove 20 is formed on the end faces of the first cylinder portion 33 and the second cylinder portion 43 facing each other in the axial direction.
　このカム溝２０の構成については、後で詳しく説明する。なお、第２筒部４３の外側に筒状カバー３２が配置されることで、カム溝２０がカバーされるため、粉塵等の異物の、カム溝２０内への侵入が防止される。 The configuration of the cam groove 20 will be described in detail later. By arranging the tubular cover 32 on the outside of the second tubular portion 43, the cam groove 20 is covered, so that foreign matter such as dust is prevented from entering the cam groove 20.
　また、ベース部４１の外周縁部には、枠状をなした複数の係止枠部４４が設けられている。これらの複数の係止枠部４４に、第１本体部３０の複数の係止突部３４がそれぞれ係止することで、第１本体部３０と第２本体部４０とが組付けられて、本体部材１１が構成されるようになっている（図６参照）。 Further, a plurality of frame-shaped locking frame portions 44 are provided on the outer peripheral edge portion of the base portion 41. The first main body 30 and the second main body 40 are assembled by locking the plurality of locking protrusions 34 of the first main body 30 to these plurality of locking frame portions 44, respectively. The main body member 11 is configured (see FIG. 6).
　更に図１０に示すように、第２筒部４３の底部の内面中央からは、円柱状をなしたバネ支持柱４１ａが突設されている。このバネ支持柱４１ａは、第１バネ部材Ｓ１内に挿入されて、同第１バネ部材Ｓ１を傾きにくくする。 Further, as shown in FIG. 10, a columnar spring support pillar 41a is projected from the center of the inner surface of the bottom of the second cylinder portion 43. The spring support column 41a is inserted into the first spring member S1 to make the first spring member S1 less likely to tilt.
　図５に示すように、筒状部１５内に配置される移動部材５０は、略円筒形状をなしており、図１０に示すように、開口した軸方向基端側から、第１バネ部材Ｓ１が挿入されるようになっている。それによって、筒状部１５の一端１５ａから、移動部材５０が所定長さ突出するようになっている。また、移動部材５０の軸方向先端中央からは、細径の柱状部５２が突設されている。この柱状部５２の先端には、長手方向両端が円弧状をなした帯状の係合片５３が連設されている。 As shown in FIG. 5, the moving member 50 arranged in the tubular portion 15 has a substantially cylindrical shape, and as shown in FIG. 10, the first spring member S1 is opened from the axially proximal end side. Is to be inserted. As a result, the moving member 50 projects by a predetermined length from one end 15a of the tubular portion 15. Further, a small-diameter columnar portion 52 is projected from the center of the axial tip of the moving member 50. At the tip of the columnar portion 52, a strip-shaped engaging piece 53 having both ends in the longitudinal direction having an arc shape is continuously provided.
　図１１や図１２に示すように、この係合片５３は、移動部材５０の回転に伴って回転して角度が変わって、前記開閉部材５の係合部６に係脱するようになっている。この実施形態の場合、固定部材１の開口部から開閉部材５が開いたときに、開閉部材５に設けた係合部６の係合溝９の溝方向に沿った方向となるように、係合片５３の長手方向が配置されるようになっており（図１１参照）、一方、固定部材１の開口部に対して開閉部材５を閉じたときに、係合溝９の溝方向に対して直交するように、係合片５３の長手方向の角度が変わるようになっている（図１２参照）。 As shown in FIGS. 11 and 12, the engaging piece 53 rotates with the rotation of the moving member 50 to change its angle, and is engaged with and disengaged from the engaging portion 6 of the opening / closing member 5. There is. In the case of this embodiment, when the opening / closing member 5 is opened from the opening of the fixing member 1, the opening / closing member 5 is engaged so as to be in the direction along the groove direction of the engaging groove 9 of the engaging portion 6 provided in the opening / closing member 5. The longitudinal direction of the unit 53 is arranged (see FIG. 11), while when the opening / closing member 5 is closed with respect to the opening of the fixing member 1, the opening / closing member 5 is arranged with respect to the groove direction of the engaging groove 9. The angle of the engaging piece 53 in the longitudinal direction is changed so as to be orthogonal to each other (see FIG. 12).
　更に、移動部材５０の軸方向外周であって、基端寄りの箇所には、一対のカム突部５５，５５が突設されている。各カム突部５５は、その外周が円形状をなしている。これらのカム突部５５，５５が、一対のカム溝２０，２０内に嵌入して、移動部材５０の押込み動作に応じて、移動部材５０を回転及び軸方向移動させる。また、図１０に示すように、第１バネ部材Ｓ１に付勢される移動部材５０は、その一対のカム突部５５，５５が、一対のカム溝２０，２０の突出側端部２１，２１に嵌合するため、筒状部１５の一端１５ａから移動部材５０全体が抜け出ないように、抜け止め保持されるようになっている。なお、この実施形態におけるカム突部５５は移動部材５０と一体形成されているが、別体で形成してもよい。 Further, a pair of cam protrusions 55, 55 are provided on the outer circumference of the moving member 50 in the axial direction near the base end. The outer circumference of each cam protrusion 55 has a circular shape. These cam protrusions 55, 55 are fitted into the pair of cam grooves 20, 20 to rotate and axially move the moving member 50 in response to the pushing operation of the moving member 50. Further, as shown in FIG. 10, the moving member 50 urged by the first spring member S1 has a pair of cam protrusions 55 and 55 having a pair of cam grooves 20 and 20 protruding side ends 21 and 21. The moving member 50 is held so as not to come off from one end 15a of the tubular portion 15 so as to be fitted to the moving member 50. Although the cam protrusion 55 in this embodiment is integrally formed with the moving member 50, it may be formed separately.
　また、移動部材５０の、前記一対のカム突部５５，５５よりも、軸方向基端側の外周であって、前記一対のカム突部５５，５５の突出方向に直交する位置には、四角孔状をなしたロック孔５７，５７が形成されている。このロック孔５７には、ロックリテーナ７０のロック突部７３が挿脱し、移動部材５０を押込み状態にロックするかロック状態を解除する。 Further, a square is located on the outer circumference of the moving member 50 on the axial base end side of the pair of cam protrusions 55, 55 and at a position orthogonal to the protrusion direction of the pair of cam protrusions 55, 55. Lock holes 57, 57 having a hole shape are formed. The lock protrusion 73 of the lock retainer 70 is inserted into and removed from the lock hole 57 to lock the moving member 50 to the pushed state or release the locked state.
　更に図９～１２に示すように、移動部材５０の基端部外周には、最基端に向かって次第に高さが低くなるテーパ面５９が形成されている。図１０に示すように、このテーパ面５９は、ロックリテーナ７０のロック突部７３に対向して配置されるようになっている。そのため、移動部材５０が筒状部１５の奥側（筒状部１５の一端１５ａとは反対側）に押し込まれたときに、テーパ面５９がロック突部７３を押圧して、ロックリテーナ７０を、第２バネ部材Ｓ２の付勢力に抗して、移動部材５０から離反する方向に押し下げ可能となっている。 Further, as shown in FIGS. 9 to 12, a tapered surface 59 whose height gradually decreases toward the most basic end is formed on the outer periphery of the base end portion of the moving member 50. As shown in FIG. 10, the tapered surface 59 is arranged so as to face the lock protrusion 73 of the lock retainer 70. Therefore, when the moving member 50 is pushed into the inner side of the tubular portion 15 (the side opposite to one end 15a of the tubular portion 15), the tapered surface 59 presses the lock protrusion 73 to push the lock retainer 70. , It is possible to push down the second spring member S2 in a direction away from the moving member 50 against the urging force.
　また、ベース部４１の内面側には、リミットスイッチ８５が配置されるようになっている（図２参照）。図２に示すように、このリミットスイッチ８５は、スイッチケース８６と、該スイッチケース８６の上端部に、配置された検出部８７とを有している。この検出部８７には、移動部材５０の軸方向基端部が接離して、筒状部１５に対する移動部材５０の押込み状態を検出するようになっている。 Further, the limit switch 85 is arranged on the inner surface side of the base portion 41 (see FIG. 2). As shown in FIG. 2, the limit switch 85 has a switch case 86 and a detection unit 87 arranged at the upper end of the switch case 86. The axial base end portion of the moving member 50 is brought into contact with and separated from the detection unit 87, and the pushed state of the moving member 50 with respect to the tubular portion 15 is detected.
　更に、ベース部４１の内面側には、バスバー９０が配置されるようになっている。図２に示すように、このバスバー９０は、駆動装置６０に導通する第１導通部９１と、リミットスイッチ８５に導通する第２導通部９２と、それらを連結する連結部９３とを有している。そして、図示しない電力供給手段による電力が、第１導通部９１を介して駆動装置６０に供給されると共に、第１導通部９１、連結部９３、第２導通部９２を介して、リミットスイッチ８５に供給されるようになっている。 Further, a bus bar 90 is arranged on the inner surface side of the base portion 41. As shown in FIG. 2, the bus bar 90 has a first conductive portion 91 that conducts to the drive device 60, a second conductive portion 92 that conducts to the limit switch 85, and a connecting portion 93 that connects them. There is. Then, electric power from a power supply means (not shown) is supplied to the drive device 60 via the first conductive portion 91, and the limit switch 85 is supplied via the first conductive portion 91, the connecting portion 93, and the second conductive portion 92. It is supposed to be supplied to.
　次に、筒状部１５の内周に形成されるカム溝２０について説明する。 Next, the cam groove 20 formed on the inner circumference of the tubular portion 15 will be described.
　図７～９に示すように、このカム溝２０は、筒状部１５の一端１５ａ側に設けられた突出側端部２１と、該突出側端部２１よりも、筒状部１５の他端側に設けられた押込み側端部２３とを有しており、突出側端部２１にカム突部５５が位置するときに、筒状部１５の一端１５ａから移動部材５０が所定長さ突出し（図７（ｂ）及び図８参照）、押込み側端部２３にカム突部５５が位置するときに、筒状部１５の一端１５ａから移動部材５０が所定長さ引き込まれるように（図７（ａ）及び図９参照）構成されている。 As shown in FIGS. 7 to 9, the cam groove 20 has a protruding side end portion 21 provided on the one end 15a side of the tubular portion 15 and the other end of the tubular portion 15 rather than the protruding side end portion 21. It has a push-in side end portion 23 provided on the side, and when the cam protrusion 55 is located at the protruding side end portion 21, the moving member 50 projects by a predetermined length from one end 15a of the tubular portion 15 ( 7 (b) and 8), when the cam protrusion 55 is located at the push-in side end 23, the moving member 50 is pulled in by a predetermined length from one end 15a of the tubular portion 15 (FIG. 7 (FIG. 7). a) and Fig. 9) are configured.
　すなわち、図７（ｂ）及び図８に示すように、前記突出側端部２１は、第１バネ部材Ｓ１により付勢された移動部材５０のカム突部５５が嵌合して、筒状部１５の一端１５ａから、移動部材５０を突出した状態に保持する。また、この突出側端部２１には、押込み側端部２３に向けて、筒状部１５の軸方向に沿って所定長さで直線状に延びる、直線部２１ａが形成されている。 That is, as shown in FIGS. 7B and 8, the protruding side end portion 21 is fitted with the cam protrusion 55 of the moving member 50 urged by the first spring member S1 to form a tubular portion. The moving member 50 is held in a protruding state from one end 15a of 15. Further, the protruding side end portion 21 is formed with a straight line portion 21a extending linearly with a predetermined length along the axial direction of the tubular portion 15 toward the pushing side end portion 23.
　一方、図７（ａ）及び図９に示すように、前記押込み側端部２３は、筒状部１５の奥側（一端１５ａとは反対側の他端側）に向けて移動部材５０が押込まれた際に、カム突部５５が嵌合して、それ以上の押し込みを規制する。なお、この状態では、第２バネ部材Ｓ２に付勢されたロックリテーナ７０のロック突部７３が、移動部材５０のロック孔５７に嵌合するので、移動部材５０が筒状部１５の一端１５ａから所定長さ引き込まれた状態に保持されるようになっている。 On the other hand, as shown in FIGS. 7A and 9, the moving member 50 pushes the push-in side end portion 23 toward the inner side of the tubular portion 15 (the other end side opposite to one end 15a). When the cam protrusion 55 is fitted, the cam protrusion 55 is fitted to restrict further pushing. In this state, the lock protrusion 73 of the lock retainer 70 urged by the second spring member S2 fits into the lock hole 57 of the moving member 50, so that the moving member 50 is one end 15a of the tubular portion 15. It is designed to be held in a state of being pulled in by a predetermined length from.
　また、この実施形態のカム溝２０には、筒状部１５の軸心Ｃ（軸方向に沿った方向）に対して周方向の一方側（図８の符号Ｒ１で示す方向、以下、単に「周方向Ｒ１」ともいう）に傾斜して、両端部２１，２３どうしを連結する、ガイド部２５が設けられている。 Further, the cam groove 20 of this embodiment is provided on one side of the circumferential direction (direction indicated by reference numeral R1 in FIG. 8) with respect to the axial center C (direction along the axial direction) of the tubular portion 15, hereinafter simply ". A guide portion 25 is provided which is inclined in the circumferential direction (also referred to as “R1”) and connects the end portions 21 and 23 to each other.
　なお、以下の説明において特に記載がない場合の、「軸方向」とは、筒状部１５の軸方向（軸心Ｃに沿った方向）を意味し、「周方向」とは、筒状部１５の周方向を意味するものとする。 In the following description, unless otherwise specified, the "axial direction" means the axial direction of the tubular portion 15 (the direction along the axial center C), and the "circumferential direction" means the tubular portion. It shall mean the circumferential direction of 15.
　前記ガイド部２５は、以下の（１），（２）の役割をなす。（１）突出側端部２１にカム突部５５が嵌合した状態で、移動部材５０が押込まれる際に、カム突部５５を、周方向Ｒ１に移動させつつ軸方向他端側に移動させて、押込み側端部２３へと導いて、移動部材５０を、筒状部１５の一端１５ａから回転させつつ所定長さ引き込む。（２）押込み側端部２３にカム突部５５が位置した状態で、駆動装置６０によりロックリテーナ７０のロック突部７３が、移動部材５０のロック孔５７から抜き出されて、ロック状態が解除された場合に、第１バネ部材Ｓ１の付勢力によって、カム突部５５を、筒状部１５の軸心Ｃに対して周方向の他方側（図９の符号Ｒ２で示す方向、以下、単に「周方向Ｒ２」ともいう）に移動させつつ、軸方向一端側に移動させて、突出側端部２１へと導いて、移動部材５０を、上記の引込み時とは反対方向に回転させつつ、筒状部１５の一端１５ａから所定長さ突出させる。 The guide unit 25 plays the following roles (1) and (2). (1) When the moving member 50 is pushed in with the cam protruding portion 55 fitted to the protruding side end portion 21, the cam protruding portion 55 is moved to the other end side in the axial direction while being moved in the circumferential direction R1. Then, it is guided to the push-in side end portion 23, and the moving member 50 is pulled in by a predetermined length while rotating from one end 15a of the tubular portion 15. (2) With the cam protrusion 55 positioned at the push-in side end 23, the lock protrusion 73 of the lock retainer 70 is pulled out from the lock hole 57 of the moving member 50 by the drive device 60, and the locked state is released. In this case, the urging force of the first spring member S1 causes the cam protrusion 55 to be moved to the other side in the circumferential direction with respect to the axial center C of the tubular portion 15 (the direction indicated by reference numeral R2 in FIG. 9, hereinafter simply referred to as simply. While moving in the "circumferential direction R2"), it is moved to one end side in the axial direction and guided to the protruding side end portion 21, and the moving member 50 is rotated in the direction opposite to that at the time of pulling in. A predetermined length is projected from one end 15a of the tubular portion 15.
　図７～１０に示すように、上記カム溝２０は、第１筒部３３の軸方向他端側の端面、及び、第２筒部４３の軸方向一端側の端面を、軸方向に互いに対向させて、一部を当接させると共に、残りを離反させることで、形成されるようになっている。 As shown in FIGS. 7 to 10, in the cam groove 20, the end face on the other end side in the axial direction of the first cylinder portion 33 and the end face on the one end side in the axial direction of the second cylinder portion 43 face each other in the axial direction. It is formed by bringing a part of it into contact with the other and separating the rest.
　この伸縮装置１０においては、第１本体部３０と第２本体部４０とを組付けた状態で、第１筒部３３及び第２筒部４３の、軸方向に対向する端面には、互いに当接する当接面３５，４５と、互いに離れてカム溝２０を形成するカム溝形成面３７，４７とが設けられている。そして、第２本体部４０側の複数の係止枠部４４に、第１本体部３０側の複数の係止枠部４４を係止させて、第１本体部３０と第２本体部４０とを組付けた状態で、第１筒部３３の当接面３５と第２筒部４３の当接面４５とが互いに当接するようになっており、第１筒部３３のカム溝形成面３７と第２筒部４３のカム溝形成面４７との間に、カム溝２０が形成されるようになっている。 In the telescopic device 10, with the first main body 30 and the second main body 40 assembled, the end faces of the first cylinder 33 and the second cylinder 43 facing each other in the axial direction are in contact with each other. Contact surfaces 35 and 45 and cam groove forming surfaces 37 and 47 that form cam grooves 20 apart from each other are provided. Then, the plurality of locking frame portions 44 on the second main body 40 side are locked with the plurality of locking frame 44s on the first main body 30 side, so that the first main body 30 and the second main body 40 are engaged. The contact surface 35 of the first cylinder portion 33 and the contact surface 45 of the second cylinder portion 43 are in contact with each other in the assembled state, and the cam groove forming surface 37 of the first cylinder portion 33 is formed. A cam groove 20 is formed between the cam groove forming surface 47 and the cam groove forming surface 47 of the second tubular portion 43.
　この実施形態では、上記のような構成をなした当接面３５，４５と、カム溝形成面３７，４７とが、筒状部１５の周方向に均等な間隔をあけて一対設けられている。 In this embodiment, a pair of contact surfaces 35, 45 and cam groove forming surfaces 37, 47 having the above-described configuration are provided at equal intervals in the circumferential direction of the tubular portion 15. ..
　より具体的に説明すると、図８に示すように、第１筒部３３の、第２筒部４３との対向端面に設けられた当接面３５は、突出側端部２１側に配置されると共に周方向に沿って延びる第１当接面３５ａと、押込み側端部２３側に配置されると共に周方向に沿って延びる第２当接面３５ｂと、第１当接面３５ａ及び第２当接面３５ｂどうしを連結すると共に、筒状部１５の軸心Ｃに対して周方向Ｒ２側に傾斜して延びる第３当接面３５ｃとからなる、略クランク状をなしている。 More specifically, as shown in FIG. 8, the contact surface 35 provided on the end surface of the first cylinder portion 33 facing the second cylinder portion 43 is arranged on the protruding side end portion 21 side. A first contact surface 35a extending along the circumferential direction, a second contact surface 35b arranged on the push-in side end 23 side and extending along the circumferential direction, a first contact surface 35a, and a second contact surface. The contact surfaces 35b are connected to each other, and the third contact surface 35c extends so as to be inclined toward the circumferential direction R2 with respect to the axial center C of the tubular portion 15 to form a substantially crank shape.
　また、図９に示すように、第１筒部３３の、第２筒部４３の対向端面に設けられたカム溝形成面３７は、軸方向に沿って互いに平行に延びる一対の直線部形成面３７ａ，３７ｂと、これらを連結すると共に周方向に沿って延びる直線部形成面３７ｃと、前記直線部形成面３７ｂの軸方向他端から、筒状部１５の軸心Ｃに対して周方向Ｒ１側に傾斜しつつ湾曲して延びる、ガイド部形成面３７ｄと、このガイド部形成面３７ｄの軸方向他端から軸方向に沿って延びる押込み端部形成面３７ｅとからなる。また、押込み端部形成面３７ｅは、一対の直線部形成面３７ａ，３７ｂよりも軸方向に短くなっている。 Further, as shown in FIG. 9, the cam groove forming surfaces 37 provided on the facing end surfaces of the second cylinder portion 43 of the first cylinder portion 33 are a pair of straight portion forming surfaces extending in parallel with each other along the axial direction. 37a, 37b, a straight portion forming surface 37c that connects them and extends along the circumferential direction, and the axial end end of the straight portion forming surface 37b in the circumferential direction R1 with respect to the axial center C of the tubular portion 15. It is composed of a guide portion forming surface 37d extending while being inclined to the side, and a push end forming surface 37e extending along the axial direction from the other end of the guide portion forming surface 37d in the axial direction. Further, the push-in end portion forming surface 37e is shorter in the axial direction than the pair of straight portion forming surfaces 37a and 37b.
　一方、図８に示すように、第２筒部４３の、第１筒部３３との対向端面に設けられた当接面４５は、前記第１筒部３３の当接面３５に適合する形状となっている。すなわち、この当接面４５は、突出側端部２１側に配置されると共に周方向に沿って延び、前記第１当接面３５ａに当接する第１当接面４５ａと、押込み側端部２３側に配置されると共に周方向に沿って延び、前記第２当接面３５ｂに当接する第２当接面４５ｂと、第１当接面４５ａ及び第２当接面４５ｂどうしを連結すると共に、筒状部１５の軸心Ｃに対して周方向Ｒ２側に傾斜して延び、前記第３当接面３５ｃに当接する第３当接面４５ｃとからなる、略クランク状をなしている。 On the other hand, as shown in FIG. 8, the contact surface 45 provided on the end surface of the second cylinder portion 43 facing the first cylinder portion 33 has a shape suitable for the contact surface 35 of the first cylinder portion 33. It has become. That is, the contact surface 45 is arranged on the protruding side end portion 21 side and extends along the circumferential direction, and the first contact surface 45a that abuts on the first contact surface 35a and the push-in side end portion 23. The second contact surface 45b, which is arranged on the side and extends along the circumferential direction and abuts on the second contact surface 35b, and the first contact surface 45a and the second contact surface 45b are connected to each other. It has a substantially crank shape and is formed of a third contact surface 45c that extends inclined toward the circumferential direction R2 with respect to the axial center C of the tubular portion 15 and abuts on the third contact surface 35c.
　また、図９に示すように、第２筒部４３の、第１筒部３３の対向端面に設けられたカム溝形成面４７は、軸方向に沿って延びる直線部形成面４７ａと、該直線部形成面４７ａの軸方向他端から、筒状部１５の軸心Ｃに対して周方向Ｒ１側に傾斜しつつ湾曲して延びる、ガイド部形成面４７ｂと、このガイド部形成面４７ｂの軸方向他端から周方向に沿って延びる押込み端部形成面４７ｃとからなる。なお、上記の直線部形成面４７ａは、第１筒部３３側の、一対の直線部形成面３７ａ，３７ｂよりも軸方向に短く形成されている。 Further, as shown in FIG. 9, the cam groove forming surface 47 provided on the opposite end surface of the first cylinder portion 33 of the second cylinder portion 43 has a straight portion forming surface 47a extending along the axial direction and the straight line. A guide portion forming surface 47b extending from the other end in the axial direction of the portion forming surface 47a while being inclined toward the circumferential direction R1 side with respect to the axial center C of the tubular portion 15, and a shaft of the guide portion forming surface 47b. It is composed of a push-end end forming surface 47c extending from the other end in the direction along the circumferential direction. The straight portion forming surface 47a is formed shorter in the axial direction than the pair of straight portion forming surfaces 37a and 37b on the first cylinder portion 33 side.
　そして、図８に示すように、第１本体部３０と第２本体部４０とを組付けた状態では、第１筒部３３の第１当接面３５ａ、第２当接面３５ｂ、第３当接面３５ｃが、第２筒部４３の第１当接面４５ａ、第２当接面４５ｂ、第３当接面４５ｃに、それぞれ当接する。その結果、図９に示すように、第１筒部３３の直線部形成面３７ａと、第２筒部４３の直線部形成面４７ａとが周方向に整合して、軸方向に連続して延びる直線状となると共に、第１筒部３３の直線部形成面３７ａ，３７ｂ，３７ｃ、及び、第２筒部４３の直線部形成面４７ａによって、カム溝２０の直線部２１ａが形成されるようになっている。 Then, as shown in FIG. 8, in the state where the first main body portion 30 and the second main body portion 40 are assembled, the first contact surface 35a, the second contact surface 35b, and the third of the first cylinder portion 33 are assembled. The contact surface 35c comes into contact with the first contact surface 45a, the second contact surface 45b, and the third contact surface 45c of the second tubular portion 43, respectively. As a result, as shown in FIG. 9, the straight portion forming surface 37a of the first tubular portion 33 and the straight portion forming surface 47a of the second tubular portion 43 are aligned in the circumferential direction and continuously extend in the axial direction. The straight portion 21a of the cam groove 20 is formed by the straight portion forming surfaces 37a, 37b, 37c of the first tubular portion 33 and the straight portion forming surface 47a of the second tubular portion 43 while being linear. It has become.
　また、図９に示すように、上記の第１本体部３０と第２本体部４０とを組付けた状態では、第１筒部３３のガイド部形成面３７ｄと、第２筒部４３のガイド部形成面４７ｂとが、離間して配置されて、カム溝２０のガイド部２５が形成されるようになっている。 Further, as shown in FIG. 9, in the state where the first main body portion 30 and the second main body portion 40 are assembled, the guide portion forming surface 37d of the first cylinder portion 33 and the guide of the second cylinder portion 43 The portion forming surface 47b is arranged apart from each other so that the guide portion 25 of the cam groove 20 is formed.
　更に図９に示すように、上記の第１本体部３０と第２本体部４０とを組付けた状態では、第１筒部３３の押込み端部形成面３７ｅと、第２筒部４３の押込み端部形成面４７ｃとが互いに直交して配置されて、カム溝２０の押込み側端部２３が形成されるようになっている。 Further, as shown in FIG. 9, in the state where the first main body portion 30 and the second main body portion 40 are assembled, the push-in end forming surface 37e of the first cylinder portion 33 and the push-in of the second cylinder portion 43 are pushed. The end forming surface 47c is arranged orthogonal to each other so that the push-in side end 23 of the cam groove 20 is formed.
　また、図８に示すように、この実施形態では、両筒部３３，４３の、第１当接面３５ａ，４５ａが、直線部２１ａの軸方向途中に位置するように設けられている。更に図８に示すように、この実施形態においては、両筒部３３，４３の、第２当接面３５ｂ，４５ｂが、押込み側端部２３に位置するように設けられている。 Further, as shown in FIG. 8, in this embodiment, the first contact surfaces 35a and 45a of both tubular portions 33 and 43 are provided so as to be located in the middle of the straight portion 21a in the axial direction. Further, as shown in FIG. 8, in this embodiment, the second contact surfaces 35b and 45b of both tubular portions 33 and 43 are provided so as to be located at the push-in side end portions 23.
　なお、この実施形態においては、両筒部３３，４３の、第１当接面３５ａ，４５ａどうし、第２当接面３５ｂ，４５ｂどうし、第３当接面３５ｃ，４５ｃどうしが、筒状部１５の軸方向の３箇所において、互いに当接するように構成されているが、例えば、第１当接面どうし及び第３当接面どうしが当接する構成としたり、或いは、第２当接面どうし及び第３当接面どうしが当接する構成としたりしてもよい。 In this embodiment, the first contact surfaces 35a, 45a, the second contact surfaces 35b, 45b, and the third contact surfaces 35c, 45c of both tubular portions 33, 43 are tubular portions. It is configured to be in contact with each other at three points in the axial direction of 15, but for example, the first contact surfaces and the third contact surfaces may be in contact with each other, or the second contact surfaces may be in contact with each other. And the third contact surfaces may be in contact with each other.
　また、両筒部の当接面としては、例えば、第１当接面及び第２当接面を、筒状部の軸心に対して傾斜したり、軸方向に沿って延びた形状としたりしてもよく、また、第３当接面を、軸方向に沿って延びたり、階段状に延びたり、曲面状をなすように延びた形状等としたりしてもよく、両本体部の組付け状態で、両筒部の対応する当接面どうしが互いに当接可能であればよく、当接する箇所は１箇所であってもよい。更に、両筒部のカム溝形成面は、その内部でカム突部が移動可能な形状であれば、特に限定はされない。 Further, as the contact surfaces of both tubular portions, for example, the first contact surface and the second contact surface may be inclined with respect to the axial center of the tubular portion or may have a shape extending along the axial direction. Alternatively, the third contact surface may extend along the axial direction, extend in a stepped shape, extend in a curved shape, or the like, and may be a combination of both main bodies. In the attached state, the corresponding contact surfaces of both cylinders may be in contact with each other, and the contact points may be one place. Further, the cam groove forming surfaces of both cylinders are not particularly limited as long as the cam protrusions can move inside the cam groove forming surfaces.
　次に、上記構造からなる伸縮装置１０の使用方法及び作用効果について説明する。 Next, the usage method and the action and effect of the expansion / contraction device 10 having the above structure will be described.
　まず、この伸縮装置１０の組付け方法について説明する。すなわち、第１本体部３０及び第２本体部４０の間に、駆動装置６０、第２バネ部材Ｓ２、ロックリテーナ７０や、リミットスイッチ８５、バスバー９０を配置すると共に、第２本体部４０のバネ支持柱４１ａの外周に、第１バネ部材Ｓ１を外装する。その後、第２本体部４０の第２筒部４３を、第１本体部３０の筒状カバー３２に挿入して押込んでいく。 First, the method of assembling the telescopic device 10 will be described. That is, the drive device 60, the second spring member S2, the lock retainer 70, the limit switch 85, and the bus bar 90 are arranged between the first main body 30 and the second main body 40, and the spring of the second main body 40 is arranged. The first spring member S1 is attached to the outer periphery of the support column 41a. After that, the second tubular portion 43 of the second main body portion 40 is inserted into the tubular cover 32 of the first main body portion 30 and pushed in.
　すると、図７～９に示すように、第１筒部３３の当接面３５と第２筒部４３の当接面４５とが互いに当接するので、第２筒部４３のそれ以上の押込みが規制されると共に、第２本体部４０側の複数の係止枠部４４に、第１本体部３０側の複数の係止突部３４がそれぞれ係止して、第１本体部３０と第２本体部４０とを組付けることができる。その後、キャップ８０を筒状部１５の先端外周に装着させることで、伸縮装置１０を組立てることができる。 Then, as shown in FIGS. 7 to 9, the contact surface 35 of the first cylinder portion 33 and the contact surface 45 of the second cylinder portion 43 come into contact with each other, so that the second cylinder portion 43 is pushed further. Along with being regulated, a plurality of locking protrusions 34 on the first main body 30 side are locked to the plurality of locking frame portions 44 on the second main body 40 side, respectively, so that the first main body 30 and the second main body 30 and the second It can be assembled with the main body 40. After that, the expansion / contraction device 10 can be assembled by attaching the cap 80 to the outer circumference of the tip of the tubular portion 15.
　上記のように、第１筒部３３の当接面３５と第２筒部４３の当接面４５とが互いに当接した状態では、図７～９に示すように、第１筒部３３のカム溝形成面３７及び第２筒部４３のカム溝形成面４７が互いに離間するので、筒状部１５にカム溝２０を形成することができる。そして、この伸縮装置１０においては、第１本体部３０と第２本体部４０とを組付けたときに、両筒部３３，４３の当接面３５，４５どうしを互いに当接させつつ、両筒部３３，４３のカム溝形成面３７，４７によって、カム溝２０を形成することができるので、カム溝２０を精度良く形成することができる。すなわち、この伸縮装置１０においては、図８や図９に示すように、カム溝形成面３７，４７と近い箇所で、当接面３５，４５どうしを当接させて、カム溝２０を形成するので、第１筒部３３や第２筒部４３が傾いたり、ガタついたりすることを抑制して、両筒部３３，４３の軸心を整合させやすくすることができるため、所望寸法のカム溝２０を精度良く形成可能となる。 As described above, in a state where the contact surface 35 of the first cylinder portion 33 and the contact surface 45 of the second cylinder portion 43 are in contact with each other, as shown in FIGS. 7 to 9, the first cylinder portion 33 Since the cam groove forming surface 37 and the cam groove forming surface 47 of the second tubular portion 43 are separated from each other, the cam groove 20 can be formed in the tubular portion 15. Then, in the expansion / contraction device 10, when the first main body portion 30 and the second main body portion 40 are assembled, both of the contact surfaces 35 and 45 of both the tubular portions 33 and 43 are brought into contact with each other. Since the cam groove 20 can be formed by the cam groove forming surfaces 37 and 47 of the tubular portions 33 and 43, the cam groove 20 can be formed with high accuracy. That is, in the telescopic device 10, as shown in FIGS. 8 and 9, the contact surfaces 35 and 45 are brought into contact with each other at a position close to the cam groove forming surfaces 37 and 47 to form the cam groove 20. Therefore, it is possible to prevent the first cylinder portion 33 and the second cylinder portion 43 from tilting or rattling, and it is possible to easily align the axes of both cylinder portions 33 and 43. Therefore, a cam having a desired size can be used. The groove 20 can be formed with high accuracy.
　また、上記のように組立てられた伸縮装置１０は、次のように動作する。 Further, the expansion / contraction device 10 assembled as described above operates as follows.
　図７（ｂ）や図８に示すように、各カム突部５５が各カム溝２０の突出側端部２１に嵌合した状態（ここではカム突部５５が、直線部２１ａを構成する直線部形成面３７ａ，３７ｂ，３７ｃに当接した状態）では、筒状部１５の一端１５ａから移動部材５０が所定長さ突出されている。図１１に示すように、この状態での移動部材５０の係合片５３は、係合部６の係合溝９を通過して、開閉部材５の内面側に当接しており、開閉部材５は固定部材１の開口部周縁に対して開閉可能となっている。また、図１０に示すように、この状態では、第２バネ部材Ｓ２に付勢されたロックリテーナ７０のロック突部７３が、移動部材５０の最基端のテーパ面５９に対向して配置されている。 As shown in FIGS. 7B and 8, each cam protrusion 55 is fitted to the protruding end 21 of each cam groove 20 (here, the cam protrusion 55 is a straight line constituting the straight portion 21a). The moving member 50 is projected by a predetermined length from one end 15a of the tubular portion 15 (in a state of being in contact with the portion forming surfaces 37a, 37b, 37c). As shown in FIG. 11, the engaging piece 53 of the moving member 50 in this state passes through the engaging groove 9 of the engaging portion 6 and is in contact with the inner surface side of the opening / closing member 5. Can be opened and closed with respect to the peripheral edge of the opening of the fixing member 1. Further, as shown in FIG. 10, in this state, the lock protrusion 73 of the lock retainer 70 urged by the second spring member S2 is arranged so as to face the tapered surface 59 at the most basic end of the moving member 50. ing.
　上記状態から開閉部材５を閉じると、係合片５３が押圧されて、移動部材５０が第１バネ部材Ｓ１の付勢力に抗して、筒状部１５の奥側に押し込まれると共に、そのテーパ面５９によって、第２バネ部材Ｓ２の付勢力に抗してロックリテーナ７０を押し下げつつ、移動部材５０が押込まれる。すると、各突出側端部２１に嵌合した各カム突部５５が、直線部２１ａに沿って軸方向に所定距離移動した後、ガイド部２５によってぞれぞれガイドされて、移動部材５０が所定方向に回転しながら筒状部１５内に徐々に引き込まれていくと共に、係合片５３が回転していく。更に移動部材５０が押圧されると、図７（ａ）や図９に示すように、各カム突部５５が各カム溝２０の押込み側端部２３に当接して、それ以上の押し込みが規制されると共に、第２バネ部材Ｓ２の付勢力によって押圧されたロックリテーナ７０のロック突部７３が、移動部材５０のロック孔５７に入り込んで係合して、筒状部１５の一端１５ａから、移動部材５０を所定長さ引き込んだ状態に保持することができる。 When the opening / closing member 5 is closed from the above state, the engaging piece 53 is pressed, the moving member 50 is pushed into the inner side of the tubular portion 15 against the urging force of the first spring member S1, and the taper thereof. The surface 59 pushes the moving member 50 while pushing down the lock retainer 70 against the urging force of the second spring member S2. Then, each cam protrusion 55 fitted to each protruding side end portion 21 moves a predetermined distance in the axial direction along the straight portion 21a, and then is guided by the guide portion 25, respectively, and the moving member 50 is moved. While rotating in a predetermined direction, the engaging piece 53 is gradually pulled into the tubular portion 15 and the engaging piece 53 is rotated. When the moving member 50 is further pressed, as shown in FIGS. 7A and 9, each cam protrusion 55 abuts on the push-side end 23 of each cam groove 20, and further push-in is restricted. At the same time, the lock protrusion 73 of the lock retainer 70 pressed by the urging force of the second spring member S2 enters the lock hole 57 of the moving member 50 and engages with the lock retainer 70 from one end 15a of the tubular portion 15. The moving member 50 can be held in a retracted state by a predetermined length.
　それと共に、図１２に示すように、移動部材５０の係合片５３が、開閉部材５の係合部６の係合溝９の溝方向に対して、係合片５３の長手方向が直交するので、固定部材１の開口部周縁に対して開閉部材５を閉じた状態にロックすることができる。 At the same time, as shown in FIG. 12, the engaging piece 53 of the moving member 50 is orthogonal to the groove direction of the engaging groove 9 of the engaging portion 6 of the opening / closing member 5 in the longitudinal direction of the engaging piece 53. Therefore, the opening / closing member 5 can be locked in a closed state with respect to the peripheral edge of the opening of the fixing member 1.
　上記状態から、例えば、車両内部に配置されたスイッチを操作することで、駆動装置６０を駆動させて、ウォームギヤ６１を介して、第２バネ部材Ｓ２の付勢力に抗して、ロックリテーナ７０を押し下げて、そのロック突部７３を移動部材５０のロック孔５７から抜き出す。すると、第１バネ部材Ｓ１の付勢力によって移動部材５０が押されて、各カム突部５５が、各カム溝２０の押込み側端部２３から抜け出るので、移動部材５０の押込み状態が解除される。その後、各カム突部５５が各ガイド部２５によってそれぞれガイドされて、移動部材５０が、押込み時の回転方向とは反対方向に回転しながら、筒状部１５の一端１５ａから徐々に突出していく。そして、各カム突部５５が、直線部２１ａを通って各突出側端部２１に嵌合すると、移動部材５０のそれ以上の突出が規制されると共に、図１１に示すように、係合片５３が、開閉部材５の係合部６の係合溝９の溝方向に沿った方向となるので、開閉部材５の閉じ状態のロックが解除される。このとき、移動部材５０によって開閉部材５が押されて、固定部材１の開口部から開閉部材５を所定高さ持ち上げるので（リフター動作）、開閉部材５を手動で開くことができる。 From the above state, for example, by operating a switch arranged inside the vehicle, the drive device 60 is driven, and the lock retainer 70 is moved against the urging force of the second spring member S2 via the worm gear 61. It is pushed down to pull out the lock protrusion 73 from the lock hole 57 of the moving member 50. Then, the moving member 50 is pushed by the urging force of the first spring member S1, and each cam protrusion 55 comes out from the pushing side end portion 23 of each cam groove 20, so that the pushed state of the moving member 50 is released. .. After that, each cam protrusion 55 is guided by each guide portion 25, and the moving member 50 gradually protrudes from one end 15a of the tubular portion 15 while rotating in a direction opposite to the rotation direction at the time of pushing. .. Then, when each cam protrusion 55 is fitted to each protrusion side end portion 21 through the straight portion 21a, further protrusion of the moving member 50 is restricted, and as shown in FIG. 11, the engaging piece Since the 53 is in the direction along the groove direction of the engaging groove 9 of the engaging portion 6 of the opening / closing member 5, the lock of the closed state of the opening / closing member 5 is released. At this time, since the opening / closing member 5 is pushed by the moving member 50 and the opening / closing member 5 is lifted by a predetermined height from the opening of the fixing member 1 (lifter operation), the opening / closing member 5 can be opened manually.
　このように、この実施形態における回転式伸縮装置１０は、筒状部１５内に押込まれた状態の、移動部材５０に係合して、移動部材５０の押込み状態を保持するロックリテーナ７０と、本体部材１１内に収容されていると共に、ロックリテーナ７０を駆動させて、移動部材５０の押込み状態を解除する、駆動装置６０とを有しているので、上記のような、フューエルリッドのリッド開閉構造に好適に用いることができる。また、移動部材５０の押込み状態を保持するロックリテーナ７０を設けたことによって、上記特許文献１の回転式伸縮装置のような周回するカム溝ではなく、筒状部１５の周方向及び軸方向に所定長さで延びるシンプルな形状で且つ短い溝長で、カム溝２０を形成することができるので、両筒部３３，４３の当接面３５，４５の長さを長く確保することができ、カム溝２０の寸法精度をより高めることができる。 As described above, the rotary telescopic device 10 in this embodiment has the lock retainer 70 that engages with the moving member 50 in the state of being pushed into the tubular portion 15 and holds the pushed state of the moving member 50. Since it has a drive device 60 that is housed in the main body member 11 and drives the lock retainer 70 to release the pushed state of the moving member 50, the lid opening / closing structure of the fuel lid as described above is provided. Can be suitably used for. Further, by providing the lock retainer 70 for holding the pushed state of the moving member 50, it is not a rotating cam groove as in the rotary telescopic device of Patent Document 1, but in the circumferential direction and the axial direction of the tubular portion 15. Since the cam groove 20 can be formed with a simple shape extending by a predetermined length and a short groove length, it is possible to secure a long length of the contact surfaces 35 and 45 of both cylinder portions 33 and 43. The dimensional accuracy of the cam groove 20 can be further improved.
　また、この実施形態においては、カム溝２０は、筒状部１５の一端１５ａ側に設けられた突出側端部２１と、該突出側端部２１よりも、筒状部１５の他端側に設けられた押込み側端部２３とを有しており、突出側端部２１には、押込み側端部２３に向けて、筒状部１５の軸方向に沿って所定長さで直線状に延びる、直線部２１ａが形成されている。そのため、第１バネ部材Ｓ１によって付勢された移動部材５０が、筒状部１５の一端１５ａから突出する際に、第１バネ部材Ｓ１のバネ力が弱まっても、カム突部５５が直線部２１ａを通るため、カム溝内周に対するカム突部５５の抵抗を少なくすることができ、移動部材５０を筒状部１５の一端１５ａから確実に突出させることができる。なお、回転式伸縮装置１０を、フューエルリッドの開閉に用いる際には、フューエルリッド（開閉部材５）を確実に開くことができるので、異音を防止することができる。 Further, in this embodiment, the cam groove 20 is provided on the protruding side end portion 21 provided on the one end 15a side of the tubular portion 15 and on the other end side of the tubular portion 15 with respect to the protruding side end portion 21. It has a push-in side end portion 23 provided, and the protruding side end portion 21 extends linearly with a predetermined length along the axial direction of the tubular portion 15 toward the push-in side end portion 23. , The straight line portion 21a is formed. Therefore, when the moving member 50 urged by the first spring member S1 protrudes from one end 15a of the tubular portion 15, even if the spring force of the first spring member S1 weakens, the cam protrusion 55 is a straight portion. Since it passes through 21a, the resistance of the cam protrusion 55 to the inner circumference of the cam groove can be reduced, and the moving member 50 can be reliably projected from one end 15a of the tubular portion 15. When the rotary telescopic device 10 is used for opening and closing the fuel lid, the fuel lid (opening / closing member 5) can be reliably opened, so that abnormal noise can be prevented.
　更に、この実施形態においては、当接面３５，４５の一部は、カム溝２０を構成する直線部２１ａの途中に配置されている。そのため、図８や図９に示すように、両筒部３３，４３が互いに当接する当接面３５，４７（ここでは第１当接面３５ａ，４５ａ）に、多少の段差があっても、該当接面３５ａ，４７ａは、直線部２１ａの途中に位置するため、カム溝２０内を移動するカム突部５５の移動、特に回転移動に影響を及ぼしにくい。 Further, in this embodiment, a part of the contact surfaces 35 and 45 is arranged in the middle of the straight line portion 21a constituting the cam groove 20. Therefore, as shown in FIGS. 8 and 9, even if there is a slight step on the contact surfaces 35, 47 (here, the first contact surfaces 35a, 45a) in which both the tubular portions 33, 43 are in contact with each other. Since the contact surfaces 35a and 47a are located in the middle of the straight portion 21a, they are unlikely to affect the movement of the cam protrusion 55 moving in the cam groove 20, particularly the rotational movement.
　また、この実施形態においては、当接面３５，４５の一部は、カム溝２０を構成する押込み側端部２３に配置されている。すなわち、図７（ａ）及び図８に示すように、両筒部３３，４３の、第３当接面３５ｃ，４５ｃが、押込み側端部２３に配置されているので、移動部材５０が押込まれて、カム突部５５が止まる位置に段差があっても、移動部材５０の回転移動や軸方向移動に影響を及ぼしにくい。 Further, in this embodiment, a part of the contact surfaces 35 and 45 is arranged at the push-in side end portion 23 constituting the cam groove 20. That is, as shown in FIGS. 7A and 8, since the third contact surfaces 35c and 45c of both cylinder portions 33 and 43 are arranged on the push-in side end portion 23, the moving member 50 is pushed in. Even if there is a step at the position where the cam protrusion 55 stops, it does not easily affect the rotational movement and the axial movement of the moving member 50.
　更に、この実施形態においては、図７～９に示すように、両筒部３３，４３の、当接面３５，４５は、突出側端部２１側で周方向に沿って形成された第１当接面３５ａ，４５ａと、押込み側端部２３で周方向に沿って形成された第２当接面３５ｂ，４５ｂと、筒状部１５の軸方向に対して斜めに延びる第３当接面３５ｃ，４５ｃとを有している。そのため、第１筒部３３と第２筒部４３とを当接面３５，４５を介して当接させたときに、第１当接面３５ａ，４５ａどうし、第２当接面３５ｂ，４５ｂどうし、第３当接面３５ｃ，４５ｃどうしがそれぞれ当接するので、カム溝形成面３７，４７の軸方向と周方向の位置規制を、より近接した位置で図ることができ、カム溝２０の精度をより一層高めることができる。なお、両筒部３３，４３の、第１当接面３５ａ，４５ａどうし及び第３当接面３５ｃ，４５ｃどうしが当接する構成や、第２当接面３５ｂ，４５ｂどうし及び第３当接面３５ｃ，４５ｃどうしが当接する構成であっても、上記と同様の効果を得ることができる。 Further, in this embodiment, as shown in FIGS. 7 to 9, the contact surfaces 35 and 45 of both the tubular portions 33 and 43 are first formed along the circumferential direction on the protruding side end portion 21 side. The contact surfaces 35a and 45a, the second contact surfaces 35b and 45b formed along the circumferential direction at the push-in side end portions 23, and the third contact surfaces extending obliquely with respect to the axial direction of the tubular portion 15. It has 35c and 45c. Therefore, when the first cylinder portion 33 and the second cylinder portion 43 are brought into contact with each other via the contact surfaces 35 and 45, the first contact surfaces 35a and 45a and the second contact surfaces 35b and 45b are brought into contact with each other. Since the third contact surfaces 35c and 45c are in contact with each other, the positions of the cam groove forming surfaces 37 and 47 in the axial direction and the circumferential direction can be regulated at closer positions, and the accuracy of the cam groove 20 can be improved. It can be further enhanced. The first contact surfaces 35a, 45a and the third contact surfaces 35c, 45c of both cylinder portions 33, 43 are in contact with each other, and the second contact surfaces 35b, 45b and the third contact surface are in contact with each other. Even if the 35c and 45c are in contact with each other, the same effect as described above can be obtained.
　なお、本発明は、上述した実施形態に限定されるものではなく、本発明の要旨の範囲内で、各種の変形実施形態が可能であり、そのような実施形態も本発明の範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. ..
１０　回転式伸縮装置（伸縮装置）
１１　本体部材
１５　筒状部
２０　カム溝
２１　突出側端部
２１ａ　直線部
２３　押込み側端部
３０　第１本体部
３３　第１筒部
３５　当接面
３７　カム溝形成面
４０　第２本体部
４３　第２筒部
４５　当接面
４７　カム溝形成面
５０　移動部材
５５　カム突部
６０　駆動装置
６１　ウォームギヤ
７０　ロックリテーナ
８０　キャップ
８５　リミットスイッチ
９０　バスバー 10 Rotary telescopic device (expandable device)
11 Main body member 15 Cylindrical part 20 Cam groove 21 Protruding side end 21a Straight part 23 Pushing side end 30 First main body 33 First cylinder 35 Contact surface 37 Cam groove forming surface 40 Second main body 43 Second Cylinder 45 Contact surface 47 Cam groove forming surface 50 Moving member 55 Cam protrusion 60 Drive device 61 Worm gear 70 Lock retainer 80 Cap 85 Limit switch 90 Bus bar

Claims (6)

  1. 　第１本体部及び第２本体部からなり、内周が円形状をなした筒状部を有する本体部材と、
    　外周が円形状をなすと共に、前記筒状部内に配置されて、同筒状部に対して回転可能に且つ軸方向移動可能に保持される移動部材と、
    　該移動部材を前記筒状部の一端から突出する方向に付勢するバネ部材と、
    　前記移動部材の外周に形成されたカム突部と、
    　前記筒状部に形成され、前記カム突部が嵌入して、前記移動部材を回転させつつ軸方向移動させるカム溝とを有し、
    　前記筒状部は、前記筒状部を軸方向に分割してなる第１筒部及び第２筒部からなり、前記第１筒部が前記第１本体部に設けられ、前記第２筒部が前記第２本体部に設けられており、
    　前記第１本体部と前記第２本体部とを組付けた状態で、前記第１筒部及び前記第２筒部の軸方向に対向する端面には、互いに当接する当接面と、互いに離れて前記カム溝を形成するカム溝形成面とが、それぞれ設けられられていることを特徴とする回転式伸縮装置。     A main body member composed of a first main body portion and a second main body portion and having a cylindrical portion having a circular inner circumference, and a main body member.
    A moving member having a circular outer circumference and being arranged in the tubular portion and held rotatably and axially movable with respect to the tubular portion.
    A spring member that urges the moving member in a direction protruding from one end of the tubular portion, and
    A cam protrusion formed on the outer circumference of the moving member and
    It has a cam groove formed in the tubular portion, into which the cam protrusion is fitted, and which moves the moving member in the axial direction while rotating the moving member.
    The tubular portion is composed of a first tubular portion and a second tubular portion formed by dividing the tubular portion in the axial direction, and the first tubular portion is provided on the first main body portion, and the second tubular portion is provided. Is provided in the second main body,
    With the first main body and the second main body assembled, the end faces of the first cylinder and the second cylinder facing each other in the axial direction are separated from each other by abutting surfaces that are in contact with each other. A rotary telescopic device characterized in that a cam groove forming surface for forming the cam groove is provided respectively.
  2. 　前記カム溝は、前記筒状部の一端側に設けられた突出側端部と、該突出側端部よりも、前記筒状部の他端側に設けられた押込み側端部とを有しており、前記突出側端部に前記カム突部が位置するときに、前記筒状部の一端から前記移動部材が所定長さ突出し、前記押込み側端部に前記カム突部が位置するときに、前記筒状部の一端から前記移動部材が所定長さ引き込まれるように構成されており、
    　前記突出側端部には、前記押込み側端部に向けて、前記筒状部の軸方向に沿って所定長さで直線状に延びる、直線部が形成されている請求項１記載の回転式伸縮装置。     The cam groove has a protruding side end portion provided on one end side of the tubular portion and a pushing side end portion provided on the other end side of the tubular portion with respect to the protruding side end portion. When the cam protrusion is located at the protruding end, the moving member protrudes from one end of the tubular portion by a predetermined length, and the cam protrusion is located at the push-in end. , The moving member is configured to be pulled in by a predetermined length from one end of the tubular portion.
    The rotary type according to claim 1, wherein a straight portion extending linearly with a predetermined length along the axial direction of the tubular portion is formed at the protruding side end portion toward the pushing side end portion. Telescopic device.
  3. 　前記当接面の一部は、前記直線部の途中に配置されている請求項２記載の回転式伸縮装置。 The rotary telescopic device according to claim 2, wherein a part of the contact surface is arranged in the middle of the straight line portion.
  4. 　前記当接面の一部は、前記押込み側端部に配置されている請求項２又は３記載の回転式伸縮装置。 The rotary telescopic device according to claim 2 or 3, wherein a part of the contact surface is arranged at the push-in side end portion.
  5. 　前記当接面は、前記突出側端部側に位置し、前記筒状部の周方向に沿って形成された第１当接面、及び／又は、前記押込み側端部に位置し、前記筒状部の周方向に沿って形成された第２当接面を有しており、
    　更に、前記第１当接面又は前記第２当接面の一方から、前記筒状部の軸方向に対して斜めに延びるか、前記第１当接面及び前記第２当接面を繋ぐように、前記筒状部の軸方向に対して斜めに延びる、第３当接面を有している請求項２～４のいずれか１つに記載の回転式伸縮装置。     The contact surface is located on the protruding side end side and is located on the first contact surface formed along the circumferential direction of the tubular portion and / or on the push-in side end portion and is located on the cylinder. It has a second contact surface formed along the circumferential direction of the shaped portion, and has a second contact surface.
    Further, from either the first contact surface or the second contact surface, the tubular portion extends obliquely with respect to the axial direction, or the first contact surface and the second contact surface are connected. The rotary telescopic device according to any one of claims 2 to 4, further comprising a third contact surface extending obliquely with respect to the axial direction of the tubular portion.
  6. 　前記回転式伸縮装置は、前記筒状部内に押込まれた状態の、前記移動部材に係合して、前記移動部材の押込み状態を保持するロックリテーナと、前記本体部材内に収容されていると共に、前記ロックリテーナを駆動させて、前記移動部材の押込み状態を解除する、駆動装置とを有している請求項１～５のいずれか１つに記載の回転式伸縮装置。 The rotary telescopic device is housed in the main body member and a lock retainer that engages with the moving member in a state of being pushed into the tubular portion and holds the pushed state of the moving member. The rotary telescopic device according to any one of claims 1 to 5, further comprising a drive device for driving the lock retainer to release the pushed state of the moving member.
PCT/JP2020/016108 2019-04-19 2020-04-10 Rotary extension/retraction device WO2020213523A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209689A (en) * 2014-04-25 2015-11-24 株式会社ニフコ Lid device
WO2018038034A1 (en) * 2016-08-26 2018-03-01 株式会社パイオラックス Rotary type extension/retraction device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209689A (en) * 2014-04-25 2015-11-24 株式会社ニフコ Lid device
WO2018038034A1 (en) * 2016-08-26 2018-03-01 株式会社パイオラックス Rotary type extension/retraction device

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