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WO2008035597A1 - Unité d'embrayage - Google Patents

Unité d'embrayage Download PDF

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Publication number
WO2008035597A1
WO2008035597A1 PCT/JP2007/067734 JP2007067734W WO2008035597A1 WO 2008035597 A1 WO2008035597 A1 WO 2008035597A1 JP 2007067734 W JP2007067734 W JP 2007067734W WO 2008035597 A1 WO2008035597 A1 WO 2008035597A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
outer ring
input
clutch
brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2007/067734
Other languages
English (en)
Japanese (ja)
Inventor
Masahiro Kawai
Yasumasa Hibi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2008035597A1 publication Critical patent/WO2008035597A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
    • F16D41/10—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
    • F16D41/105—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing the intermediate members being of circular cross-section, of only one size and wedging by rolling movement not having an axial component between inner and outer races, one of which is cylindrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • B60N2/1615—Parallelogram-like structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/165—Gear wheel driven mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/167—Ratchet mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/168—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable and provided with braking systems

Definitions

  • the present invention relates to a lever-side clutch portion that transmits rotational torque from the input side to the output side, and a brake that transmits rotational torque from the input side to the output side and blocks reverse input torque from the output side.
  • the present invention relates to a clutch unit having a side clutch portion.
  • This type of clutch unit is incorporated in an automotive seat lifter that adjusts the seat up and down by lever operation, and transmits a rotational torque from the input side to the output side, and a rotation from the input side. And a brake-side clutch section that transmits torque to the output side and blocks reverse input torque from the output side (see, for example, Patent Documents 1 and 2).
  • FIG. 24 is a cross-sectional view showing the overall configuration of the conventional clutch unit disclosed in Patent Documents 1 and 2
  • FIG. 25 is a cross-sectional view taken along the line OO in FIG. 24, and
  • FIG. FIG. 6 is a cross-sectional view taken along the line P—P.
  • the lever side clutch unit 111 is configured to have a lever side outer ring 114 as an input side member to which torque is input by lever operation, and torque from the lever side outer ring 114 to the brake side. Engagement between the inner ring 115 as a connecting member to be transmitted to the clutch part 112, and the lever-side outer ring 114 and the inner ring 115. Cylindrical rollers 116, a retainer 117 that holds the cylindrical rollers 116 at predetermined intervals in the circumferential direction, a brake-side outer ring 122 as a stationary member that is restricted in rotation, and a retainer 117 and a brake-side outer ring 122.
  • An inner centering spring 118 as a first elastic member that accumulates elastic force with the input torque from the side outer ring 114 and returns the cage to a neutral state with the accumulated elastic force by releasing the input torque
  • a lever Provided between the side outer ring 114 and the brake side outer ring 122, accumulates elastic force with the input torque from the lever side outer ring 114, and releases the input torque to make the lever side outer ring 114 neutral with the accumulated elastic force.
  • the main part is composed of the outer centering spring 119 as the second elastic member to be restored!
  • reference numeral 113 denotes a lever side side plate which is fixed to the lever side outer ring 114 by caulking and constitutes an input side member together with the lever side outer ring 114, and 130 is attached to the output shaft 124 via a wave washer 131. It's a tasty washer.
  • the brake side clutch portion 112 receives the brake side outer ring 122 as a stationary side member whose rotation is restricted and the torque from the lever side clutch portion 111.
  • the inner ring 115 as a connecting member, and the clearance between the brake-side outer ring 122 and the output shaft 124 are arranged in the clearance between the brake-side outer ring 122 and the output shaft 124.
  • the main part is composed of a plurality of pairs of cylindrical rollers 125 that control transmission and blocking of reverse input torque from the output shaft 124.
  • the flange portion of the inner ring 115 functions as a cage that holds the cylindrical roller 125 at a predetermined interval in the circumferential direction.
  • reference numeral 123 denotes a brake side plate that is fixed to the brake side outer ring 122 by caulking and forms a stationary side member together with the brake side outer ring 122
  • 126 is an N-shaped cross section disposed between each pair of cylindrical rollers 125.
  • a leaf spring 129 is a friction ring as a braking member attached to the brake side plate 123.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2003-166555
  • Patent Document 2 Japanese Patent Laid-Open No. 2003-97605
  • the lever-side outer ring 114 which is one part constituting the lever-side clutch portion 111 in the conventional clutch unit disclosed in Patent Documents 1 and 2, is made from a single plate-like material by pressing. It is formed into a shape.
  • the lever-side outer ring 114 is formed into a cup shape by pressing as described above, so that the thickness of the plate-shaped material that can be formed is There is a limit. That is, it is difficult to manufacture the lever-side outer ring 114 from a plate-shaped material having a certain thickness or more by pressing.
  • the breakdown torque generally means the maximum torque applied at the time when the part is broken, as an index of the strength of the part.
  • FIG. 27 is a sectional view showing the overall configuration of the clutch unit previously proposed by the applicant
  • FIG. 28 is a sectional view taken along the line Q-Q in FIG. 27,
  • FIGS. 29a and 29b show the lever-side outer ring 214.
  • FIGS. 30a and 30b are views showing a lever side plate 213 which is crimped and fixed to the lever side outer ring 214 and constitutes an input side member together with the lever side outer ring 214.
  • the lever-side outer ring 214 is formed of a thick plate-shaped member that has been punched.
  • the input side member of the lever side clutch portion 111 is constituted by the cup-shaped lever side outer ring 114 that has been pressed, whereas In the clutch unit previously proposed by the applicant, the lever side outer ring 214 is formed by a punched plate member.
  • the plate-like member constituting the lever-side outer ring 214 is formed by punching in this way, the plate-like member can be made thicker, and the strength of the lever-side outer ring 214 can be increased. In addition, the amount of elastic deformation can be reduced to easily improve the breaking torque.
  • the input side member of the lever side clutch portion 211 is composed of a lever side outer ring 214 and a lever side side plate 213, and the lever side side plate 213 is caulked and fixed to the lever side outer ring 214. It has a structure.
  • a plurality of (three in the figure) notch recesses 214b are formed on the outer periphery of the lever-side outer ring 2 14 shown in FIGS. 29a and 29b, and a plurality of notch recesses 214b are formed on the outer periphery of the lever-side side plate 213 shown in FIGS.
  • the bifurcated claw portion 21 3b (three in the figure) is bent.
  • lever-side outer ring 214 and the lever-side plate 213 are joined, and as shown in FIG. After inserting the claw portion 213b of the lever side plate 213 into the notch recess 214b of the outer ring 214, the bifurcated portion of the claw portion 213b of the lever side plate 213 is plastically deformed outward in the circumferential direction as shown in FIG. By doing so, the lever side plate 213 is caulked and fixed to the lever side outer ring 214.
  • the plate-like member constituting the lever-side outer ring 214 is formed by punching, so that the peripheral portion of the notch recess 214b of the lever-side outer ring 214 is on one surface side. There will be sagging ⁇ and burrs ⁇ on the other side (see Fig. 33).
  • the lever-side outer ring 214 and the lever are joined by joining the lever-side outer ring 214 and the lever-side side plate 213 on the sag side by punching the lever-side outer ring 214. Ensure that the side plate 213 is in close contact and the lever side plate 213 is crimped on the burr side by punching the lever side outer ring 214.
  • the present invention has been proposed to improve the above-described points.
  • the purpose of the present invention is to secure a close contact between the lever-side outer ring and the lever-side side plate and to secure the crimped portions of the two. It is in providing the clutch unit which can improve the intensity
  • the clutch unit according to the present invention is provided on the input side, and is provided on the output side with a lever side clutch portion that controls transmission / cutoff of rotational torque to the output side by lever operation, and from the lever side clutch portion. And a brake side clutch portion that cuts off the reverse input torque from the output side.
  • the lever side clutch portion in this clutch unit is an input side member to which torque is input by lever operation, and a linkage that transmits torque from the input side member to the brake side clutch portion.
  • the coupling member a plurality of engagement elements for controlling the interruption of the transmission of the input torque from the input side member by disengagement between the input side member and the coupling member, and the engagement elements at predetermined intervals in the circumferential direction. It is provided between the retainer, the stationary member whose rotation is restrained, and the retainer and the stationary member. The elastic force is accumulated by the input torque from the input member.
  • the input side member of the lever side clutch portion in the present invention includes a lever side outer ring constituted by a punched plate member and a lever side outer ring thereof. It consists of a lever side plate fixed by crimping, joined to the lever side plate on the sag side by punching of the lever side outer ring, and formed a chamfered part on the burr side by punching of the lever side outer ring, and at the chamfered part The lever side plate is crimped to the lever side outer ring.
  • the plate-like member constituting the lever side outer ring is formed by punching, and there is a sag on one side of the lever side outer ring, and a burr on the other side. Will do.
  • the above-mentioned “sagging side by punching of the lever side outer ring” means one surface side where sagging exists, and “the burr side by punching processing of the lever side outer ring” means the other surface side where burr exists.
  • the lever side outer plate and the lever side plate are brought into close contact with each other by joining the lever side outer plate on the sag side of the lever side outer ring by punching, and the lever side on the burr side by punching of the lever side outer ring. Clamp the side plate.
  • the lever side outer plate and the lever side plate are brought into close contact with each other by joining the lever side outer plate on the sag side of the lever side outer ring by punching, and the lever side on the burr side by punching of the lever side outer ring. Clamp the side plate.
  • a chamfered part on the burr side by punching the lever side outer ring it is possible to prevent breakage or deformation of the swaged part of the lever side plate and to prevent the swaged part from coming off the lever side outer ring. it can. As a result, it becomes easy to ensure the close contact between the lever side outer ring and the lever side plate.
  • the brake side clutch portion in the clutch unit includes a connecting member to which torque from the lever side clutch portion is input, an output side member to which torque is output, a stationary side member in which rotation is restricted, It is arranged in the wedge clearance between the stationary side member and the output side member. It is possible to provide a structure including a plurality of pairs of engagement elements that control transmission of input torque from the connecting member and blocking of reverse input torque from the output side member by engaging and disengaging the two.
  • the clutch unit according to the present invention is suitable for use in automobiles by incorporating the lever side clutch part and the brake side clutch part into the automobile seat lifter part.
  • the input side member is coupled to the operation lever
  • the output side member is connected to the rotating member of the automobile seat lifter.
  • the input side member of the lever side clutch portion includes a lever side outer ring configured by a punched plate-like member and a lever side side plate fixed by crimping to the lever side outer ring.
  • Join the lever side plate on the sag side by punching the lever side outer ring form a chamfered portion on the burr side by punching the lever side outer ring, and crimp the lever side plate to the lever side outer ring at the chamfered portion
  • Can be suppressed and the strength of the caulking portion can be improved.
  • the operation stability of the clutch unit can be ensured and the reliability can be improved.
  • FIG. 1 shows the overall configuration of the clutch unit X in the embodiment of the present invention, and C—
  • FIG. 2 is a left side view of the clutch unit X shown in FIG. 1
  • FIG. 3 is a right side view of the clutch unit X shown in FIG. 1
  • FIG. 4 is a cross section taken along AA in FIG. Figure
  • Figure 5 shows B-
  • FIG. 6a and FIGS. 6b to 19a to 19f show the components of the clutch unit X
  • FIGS. 20, 21a, and 21b show the vehicle seat lifter unit incorporating the clutch unit X
  • FIG. 22, FIG. 22 and FIG. 23 are diagrams for explaining a procedure for incorporating the clutch unit into the seat lifter.
  • the clutch unit X is incorporated in an automobile seat lifter (see FIGS. 20, 21a, and 21b) that adjusts the height of the seat by lever operation, for example.
  • the clutch unit X is composed of a lever-side clutch portion 11 provided on the input side and a brake-side clutch portion 12 having a reverse input cutoff function provided on the output side.
  • the lever side clutch portion 11 includes, for example, a lever side outer ring 14 (see FIGS. 8a and 8b) as an input side member to which a lever (not shown) is connected, and a lever side side.
  • a plate 13 see FIGS. 9a and 9b
  • an inner ring 15 as a connecting member
  • a plurality of cylindrical rollers 16 as engaging elements
  • a cage 1 that holds the cylindrical rollers 16 7 (see FIGS. 14a to 14c)
  • the inner centering spring 18 see FIGS. 6a and 6b
  • an outer centering spring 19 see FIGS. 7a to 7c which is a second elastic member for returning to the standing state.
  • the washer 30 is press-fitted into the end of the bottomed cylindrical portion 15a of the inner ring 15 to prevent the component parts from coming off.
  • the lever-side outer ring 14 is formed of a thick plate-like member that has been punched.
  • a plurality of cam surfaces 14a are formed at equal intervals in the circumferential direction on the inner periphery of the lever-side outer ring 14 (see FIG. 4).
  • the inner ring 15 includes an outer peripheral surface 15a that forms a wedge clearance 21 between the outer ring 15 and the cam surface 14a of the lever side outer ring 14.
  • the cage 17 has a plurality of pockets 20 for accommodating the cylindrical rollers 16.
  • the inner centering spring 18 is formed of a member having a circular cross section having a pair of locking portions 18a bent radially inward as shown in FIGS. 6a and 6b, and is located on the inner diameter side of the outer centering spring 19. (See Figure 1). Since the inner centering spring 18 has a circular cross section, the axial dimension of the space in which the inner centering spring 18 is disposed between the lever side clutch part 11 and the brake side clutch part 12 whose axial dimension is small is reduced. This makes the clutch unit more compact.
  • the inner centering spring 18 is disposed between the retainer 17 and the brake side outer ring 22 (cover 22b) which is a stationary side member of the brake side clutch portion 12, and the both locking portions 18a are disposed in the retainer. It is locked to 17 and is locked to a claw portion 22b (see FIG. 1) provided on the brake side outer ring 22 (cover 22b).
  • this inner centering spring 18 when an input torque of 14 lever-side outer ring is applied, one locking portion 18a is part of the cage 17, and the other locking portion 18a is the brake-side outer ring 22 ( When the lever-side outer ring 14 is rotated, the inner centering spring 18 is expanded and elastic force is accumulated, and the input torque from the lever-side outer ring 14 is released. The cage 17 is returned to the neutral state by the elastic restoring force.
  • the outer centering spring 19 has an annular shape as shown in FIGS. 7a to 7c, and has a pair of locking portions 19a and 19a whose both ends are bent in one axial direction.
  • the outer centering spring 19 bends one locking portion 19a in the axial direction from a position substantially the same diameter as the annular portion 19b, and the other locking portion 19a to the annular portion.
  • the outer centering spring 19 is restricted from moving in the axial direction (moving to the left in FIG. 1) by a stopper portion 23d (see FIGS. 1 and 2) extending from the brake side plate 23.
  • the outer centering spring 19 has an annular part 19b and locking parts 19a, 19a.
  • the outer centering spring 19 is interposed between the lever side plate 13 that is crimped and fixed to the lever side outer ring 14 and the brake side plate 23 that is crimped and fixed to the brake side outer ring 22 of the brake side clutch portion 12. Claw portion provided on both side locking plates 19a, 19a force S lever side plate 13
  • the locking portions 19a and 19a are out of phase in the circumferential direction with respect to the locking portion 18a of the inner centering spring 18.
  • this outer centering spring 19 when the lever side outer ring 14 rotates as the lever side outer ring 14 rotates due to the input torque from the lever side outer ring 14, one locking portion 19a becomes the lever side side plate. The other locking portion 19a is blocked by the force of the 13 claw portions 13a and the bent portion 13a extending. As the lever-side outer ring 14 is rotated, the outer centering spring 19 is expanded and elastic force is accumulated as the lever-side outer ring 14 is rotated. When the input torque from is released, the lever-side outer ring 14 is returned to the neutral state by its elastic restoring force.
  • the brake side clutch portion 12 having a reverse input blocking function which is called a lock type, has an inner ring 15 (Fig. 5) as a connecting member to which torque from the lever side clutch portion 11 is input. 13a and 13b), an output shaft 24 as an output side member (see FIGS. 18a and 18b), and a brake side outer ring 22 as a stationary side member with restricted rotation (see FIGS. 15a, 15b and 16a) 16b) and the brake side plate 23 (see Fig. 17a and Fig. 17b) and the wedge clearance 28 between the brake outer ring 22 and the output shaft 24.
  • Cylindrical rollers 25 as a plurality of pairs of engaging rollers that control the transmission of input torque from the inner ring 15 and the blocking of the reverse input torque from the output shaft 24, and each pair of cylindrical rollers 25 are interposed between these cylindrical rollers.
  • the main part is composed of an M-shaped leaf spring 26.
  • a plurality of cam surfaces 24a are formed on the outer diameter of the output shaft 24 at equal intervals in the circumferential direction, and in a wedge clearance 28 provided between the inner peripheral surface 22a of the brake side outer ring 22 and the like.
  • Cylindrical rollers 25 and leaf springs 26 are arranged.
  • the enlarged diameter portion 15b of the inner ring 15 (see FIG. 1, FIG. 13a and FIG. 13b) also functions as a cage in which pockets 27a for accommodating the cylindrical rollers 25 and the leaf springs 26 are formed at equal intervals in the circumferential direction. .
  • the brake side plate 23 is formed with a convex portion 23f for restricting the position of the cylindrical roller 25 disposed in the wedge clearance 28 (see Fig. 5) (see Fig. 1). That is, in the wedge clearance 28, it is necessary to stabilize the axial position of the cylindrical roller 25. Therefore, the surface facing the cylindrical roller 25 of the brake side plate 23 is projected to form the convex portion 23f, and the convex portion 23f is brought into contact with the end face of the cylindrical roller 25. The axial position of the cylindrical roller 25 is regulated by the convex portion 23f, and the axial position of the cylindrical roller 25 can be stabilized.
  • the cam surface 24a formed on the outer diameter of the output shaft 24 is divided into two parts having a mountain-shaped cross section by dividing the central portion where the leaf spring 26 is located at the boundary. It consists of a sloped part 24a. In this way, the cam surface 24a has two slope portions having a mountain shape in cross section. If it is composed of 24 ⁇ , for the purpose of compactness, even if the inner diameter of the brake side outer ring 22 is reduced, the wedge clearance at the wedge clearance 28 will not increase, but the wedge clearance will have the proper wedge angle. 28. As a result, it becomes easy to engage the cylindrical roller 25 between the inner peripheral surface of the brake-side outer ring 22 and the cam surface 24a of the output shaft 24, and transmission or interruption of rotational torque is executed at an appropriate timing. be able to.
  • a resin friction ring 29 (see FIGS. 19a to 19f) is attached to the brake side plate 23 as a braking member, and the friction ring 29 is attached to the large diameter of the output shaft 24.
  • the inner circumferential surface 24e of the annular recess 24b formed in the portion 24d is press-fitted with a margin (see FIGS. 18a and 18b). Accordingly, the braking force is applied to the output shaft 24 by pressing the outer peripheral surface 29c of the friction ring 29 to the inner peripheral surface 24e of the annular recess 24b of the output shaft 24 (see FIG. 5).
  • a plurality of circular protrusions 29a are provided at equal intervals along the circumferential direction of the end surface of the friction ring 29, and the protrusions 29a are press-fitted into the holes 23c of the brake side plate 23 to be fitted. As a result, it is fixed to the brake side plate 23 (see Fig. 2).
  • the projection 29a is press-fitted, the fitting state with the hole 23c is obtained by elastic deformation of the projection 29a by the resin material. In this way, by adopting the press-fitting structure of protrusion 29a and hole 23c, it is possible to prevent the friction ring 29 from falling off the brake side plate 23 during handling, etc., and handling during assembly. Can be improved.
  • the cross-sectional shape of the protrusion 29a is not limited to a cylindrical shape, and may be a truncated cone shape or a stepped circular column shape.
  • 19d illustrates a cylindrical protrusion 29a
  • FIG. 19e illustrates a truncated cone-shaped protrusion 29a
  • FIG. 19f illustrates a stepped cylindrical protrusion 29a.
  • the shape of 29a is a truncated cone shape or a stepped columnar shape, it is easier to insert into the hole 23c of the brake side plate 23 than in the case of a columnar shape, and it is more possible to prevent the fitting structure from falling off by press-fitting. It will be even more certain.
  • the brake-side outer ring 22 is composed of two members, a punched thick plate-like member 22a and a press-worked cover 22b.
  • the plate-like member 22a and the cover 22b are connected to the brake-side side plate 23.
  • a wedge clearance 28 is formed between the inner peripheral surface 22 a of the brake side outer ring 22 and the cam surface 24 a of the output shaft 24.
  • Bray The cover 22b of the key-side outer ring 22 is formed with a locking portion 22b (see FIG. 1) that engages with the inner centering spring 18 of the lever-side clutch portion 11.
  • the input torque from the lever-side outer ring 14 is input to the inner ring 15 via the lever-side clutch portion 11, and the inner ring 15 comes into contact with the cylindrical roller 25 and presses against the elastic force of the leaf spring 26.
  • the cylindrical roller 25 is detached from the wedge, the output shaft 24 is unlocked, and the The force shaft 24 can rotate.
  • the inner ring 15 further rotates, the clearance between the inner ring 15 and the convex part 24 4c of the output shaft 24 is clogged, and the inner ring 15 comes into contact with the convex part 24c of the output shaft 24. Is transmitted to the output shaft 24, and the output shaft 24 rotates.
  • the lever-side outer ring 14 is formed of a thick plate-like member obtained by punching a single material.
  • a plurality of (three in the figure) notch recesses 14b into which the claw portions 13b (see FIGS. 9a and 9b) of the lever side side plate 13 are inserted are formed on the outer periphery of the lever side outer ring 14.
  • the lever side plate 13 and the lever side outer ring 14 are connected by crimping the claw portion 13b of the lever side plate 13 inserted into the notch 14b.
  • the lever side outer ring 14 and the lever side plate 13 fixed by crimping to the lever side outer ring 14 constitute an input side member of the lever side clutch portion 11.
  • one notch recess 14c includes one claw portion of the lever side plate 13 13a is ⁇
  • This claw portion 13a is extended radially outward and its tip end is bent into an inverted U shape, and the bent portion 13a is engaged with the outer centering spring 19.
  • the claw portion 13a is a stopper.
  • Ribs 13a are formed to ensure the strength against repeated stress of operation. This
  • the strength of the claw 13a can be secured by the ribs 13a, so that the lever operation is repeated.
  • the lever side outer ring 14 is punched by a punching ⁇ side and joined to the lever side plate 13 to form a chamfered portion 14 d on the burr side of the lever side outer ring 14 by punching.
  • the lever side plate 13 is crimped to the lever side outer ring 14 with the chamfered portion 14d of the lever.
  • This chamfer 14d may be either a C chamfer 14d shown in FIG. 11 or an R chamfer 14d shown in FIG. 11 and 12 show the main part of FIG.
  • FIG. 1 A first figure.
  • the lever side plate 13 is inserted into the notch recess 14b of the lever side outer ring 14 after the claw portion 13b of the lever side plate 13 is inserted into the lever side plate 13 as shown in FIG. 11 or FIG.
  • the lever side plate 13 is caulked and fixed to the lever side outer ring 14 by plastically deforming the bifurcated portion of the claw portion 13b outward in the circumferential direction.
  • lever-side outer ring 14 and the lever-side side plate 13 are joined, the lever-side outer ring 14 and the lever-side side plate 13 are brought into close contact by joining the lever-side outer plate 14 to the lever-side side plate 13 on the sag side of the lever-side outer ring 14 by punching. And tighten the lever side plate 13 on the burr side by punching the lever side outer ring 14. At this time, by forming the chamfered portion 14d (14d, 14d) on the burr side by punching the lever side outer ring 14, the notch recess 14b of the lever side outer ring 14 is formed.
  • the inner ring 15 is formed with an enlarged diameter portion 15b at the open end of the bottomed cylindrical portion 15a, and along the circumferential direction on the outer peripheral edge of the enlarged diameter portion 15b.
  • a plurality of (four) pockets 27a for accommodating the cylindrical rollers 25 and the leaf springs 26 and a plurality (four) of pockets 27b for accommodating the convex portions 24c of the output shaft 24 are alternately formed.
  • An air hole 15c is formed in the bottom surface of the aforementioned bottomed cylindrical portion 15a.
  • the pocket 27a in which the cylindrical roller 25 and the leaf spring 26 are accommodated is wide, and the pocket 27b in which the convex portion 24c of the output shaft 24 is accommodated is narrow.
  • the inner ring 15 is shaped like a bottomed cylinder to improve the strength. Further, the air hole 15c provided in the bottomed cylindrical portion 15a exhibits an air venting action when the output shaft 24 is assembled.
  • FIG. 14a to 14c show the resin cage 17 in the lever side clutch portion 11.
  • the cage 17 is a cylindrical member formed with a plurality of pockets 20 for rotatably accommodating the cylindrical rollers 16 at equal intervals in the circumferential direction.
  • Two notch recesses 17a are formed at one end of the retainer 17, and the locking part 18a of the inner centering spring 18 is locked to the adjacent end surface 17a of each notch recess 17a.
  • the retainer 17 is held by receiving a stress load from the inner centering spring 18 because the engaging portion 18a of the inner centering spring 18 is locked to the adjacent end surface 17a of the notch recess 17a. Cracks may occur in vessel 17.
  • the cage 17 is made of resin materials such as PA (polyamide), PP (polypropylene), POM ( Polyacetanol) or PBT (polybutylene terephthalate) or the like is used to mold a glass fiber containing 25% or more, preferably 25% to 40%.
  • PA polyamide
  • PP polypropylene
  • POM Polyacetanol
  • PBT polybutylene terephthalate
  • the blending ratio of the glass fiber is smaller than 25%, the cage 17 may be cracked, and it is difficult to improve the strength.
  • the glass fiber ratio is larger than 40%, the cage 17 becomes brittle and it is difficult to secure a desired strength.
  • FIGS. 15a and 15b, FIGS. 16a and 16b show a plate-like member 22a and a cover 22b that constitute the brake-side outer ring 22.
  • FIG. The brake-side outer ring 22 is composed of two members: a thick plate-like member 22a obtained by punching one material, and a cover 22b obtained by pressing one other material.
  • the plate-like member 22a and the cover 22b is integrally crimped and fixed by a brake side plate 23 shown in FIGS. 17a and 17b.
  • a plurality of (three) notch recesses 22a are formed on the outer periphery of the plate-like member 22a constituting the brake side outer ring 22, and a plurality (three) notch recesses are also formed on the outer periphery of the cover 22b. 22b shaped The notch recesses 22a and 22b are formed on the claw portions 23b of the brake side plate 23 (see FIGS. 17a and 17b).
  • the plate-like member 22a and the cover 22b are connected by caulking the claw portion 23b of the side plate 23 to be integrated with the brake side plate 23 as a brake side outer ring 22.
  • a notch recess 22a formed on the outer periphery of the plate-like member 22a and a shape formed on the outer periphery of the cover 22b.
  • the claw portion 23a of the brake side plate 23 is inserted into the formed notch recess 22b.
  • An upright portion 23a obtained by bending the claw portion 23a of the rake side plate 23 radially outward is disposed between the locking portions 19a and 19a of the outer centering spring 19 (see FIG. 2).
  • the cover 22b is formed with a claw portion 22b protruding in the axial direction, and the claw portion 22b is disposed between the locking portions 18a of the inner centering spring 18.
  • the claw portion 22b of the cover 22b is formed by raising the outer diameter side of the claw portion formation position.
  • Reference numerals 22a and 22b shown in FIGS. 15a and 16a are attached to the brake side plate 23, respectively.
  • a predetermined circumferential clearance is provided between the plate 13 and the claw 13a.
  • the brake-side outer ring 22 is constituted by the two members of the punched plate-like member 22a and the cover 22b, so that the plate-like member 22a can be thickened, and the brake It is possible to improve the strength of the side outer ring 22 and reduce the amount of elastic deformation to easily improve the breaking torque.
  • the brake outer ring 22 only the plate-like member 22a that requires strength is heat-treated, and the cover 22b is relatively not required for strength, so that the cost can be reduced without performing heat treatment. When high strength is required, heat treatment may be performed.
  • heat treatment may be performed on the outer periphery of the brake side plate 23, as shown in Figs.
  • flange portion 23e there are one flange portion 23e extending upward and two flange portions 23e extending downward as a clutch mounting portion to the seat lifter portion. (See Figure 1 to Figure 4).
  • a mounting hole 23e to the seat lifter portion is formed, and a cylindrical portion 23e projects in the axial direction so as to surround the mounting hole 23e.
  • the two claw portions 13a of the lever-side side plate 13 are brought into contact with the cover 22b of the brake-side outer ring 22 while being brought into contact with the standing portion 23a extending from the claw portion 23a. That is, the lever side plate 13
  • the lever side plate 13 is divided into three parts consisting of a bent part 13a and two claw parts 13a.
  • the structure is such that it is positioned on the brake side plate 23 and the cover 22b so as to contact each other.
  • the assembled state of the lever side plate 13 with respect to the brake side plate 23 and the cover 22b can be stabilized.
  • FIGS. 18 a and 18 b show the output shaft 24.
  • Four cam surfaces 24a are formed at equal intervals in the circumferential direction on the outer peripheral surface of the large-diameter portion 24d provided integrally in the axial center portion of the output shaft 24, and a convex portion 24c is formed between adjacent cam surfaces 24a. It is arranged.
  • Each cam surface 24a is composed of two slope portions 24a having a mountain-shaped cross section.
  • the convex portion 24c supports the output shaft 24 with the inner diameter of the brake side outer ring 22.
  • An annular recess 24b in which the friction ring 29 is accommodated is formed on one end face of the large diameter portion 24d.
  • FIGS. 19a to 19c show a friction ring 29 made of resin.
  • circular protrusions 29a are provided at equal intervals along the circumferential direction thereof, and the protrusions 29a are attached to the lever side plate 23 by fitting into the holes 23c of the lever side plate 23. It is done.
  • the friction ring 29 is press-fitted with a margin into an inner peripheral surface 24e of an annular recess 24b formed in the large diameter portion 24d of the output shaft 24 (see FIGS. 18a and 18b).
  • a braking force in the rotation direction of the output shaft 24 is applied by the frictional force generated between the outer peripheral surface 29c of the friction ring 29 and the inner peripheral surface 24e of the annular recess 24b of the output shaft 24.
  • the magnitude of this braking force is the reverse input that is input to the output shaft 24. What is necessary is just to set suitably in consideration of the magnitude
  • a plurality of concave slits 29b are formed at equal intervals in the circumferential direction (see FIGS. 5, 19a and 19c).
  • the friction ring 29 can be provided with inertia, so that the rate of change of the sliding torque with respect to the inner diameter tolerance of the output shaft 24 and the outer diameter tolerance of the friction ring 29 is increased. Absent. In other words, the setting range of the braking force applied by the frictional force generated between the outer peripheral surface 29c of the friction ring 29 and the inner peripheral surface 24e of the annular recess 24b of the output shaft 24 can be reduced. Can be set appropriately. Further, since the slit 29b becomes a grease reservoir, it is possible to suppress the outer circumferential surface 29c of the friction ring 29 from being worn by sliding with the inner circumferential surface 24e of the annular recess 24b of the output shaft 24.
  • FIG. 20 shows a seat 40 installed in the passenger compartment of a car.
  • the seat 40 is composed of a seat 40a and a backrest 40b, and includes a seat lifter 41 for adjusting the height H of the seat 40a.
  • the height H of the seating seat 40a is adjusted by the operation lever 41a of the seat lifter 41.
  • FIG. 21 a conceptually shows one structural example of the sheet lifter unit 41.
  • One end of each of the link members 41c and 41d is pivotally attached to the slide movable member 41b of the seat slide adjuster 41b.
  • the other ends of the link members 41c and 41d are pivotally attached to the seating seat 40a, respectively.
  • the other end of the link member 41c is pivotally attached to the sector one gear 41f via the link member 41e.
  • the sector one gear 41f is pivotally attached to the seating seat 40a, and can swing around the fulcrum 41f.
  • the other end of the link member 41d is pivotally attached to the seating seat 40a.
  • the clutch unit X of the above-described embodiment is fixed to an appropriate part of the seating seat 40a, and, for example, an operation lever 41a made of resin is coupled to the lever side plate 13 of the lever side clutch portion 11 so that the brake side A pinion gear 41g is provided on the output shaft 24 of the clutch portion 12 so as to mesh with the sector one gear 41f that is a rotating member.
  • the pinion gear 41g is formed integrally with the shaft end of the output shaft 24 as shown in FIGS. 1, 18a and 18b.
  • the caulking jig 50b arranged on the other surface of the flange 23e, that is, the surface on which the cylindrical portion 23e is formed is attached to the cylindrical portion 23e.
  • one of the locking portions 19a interferes with the holding jig 50a.
  • the outer centering spring 19 has a shape in which the one locking portion 19a described above is bent in the axial direction from a position substantially the same diameter as the annular portion 19b (see FIG. 7a to 7c). In this way, the outer centering spring 19 is disposed on one of the locking portions 19a, that is, on the flange portion 23e side above the brake side plate 23. Since the locking portion 19 ai is bent in the axial direction from a position substantially the same diameter as the annular portion 19 b, the outer side of the cylinder 23 e of the flange 23 e of the brake side plate 23 is
  • the locking portion 19a of the centering spring 19 does not interfere with the holding jig 50a.
  • the cylindrical portion 23e of the flange 23e of the brake side plate 23 can be securely crimped by the crimping jig 50b.
  • FIG. 1 is a cross-sectional view taken along line CC in FIG. 2, showing the overall configuration of the clutch unit according to the embodiment of the present invention.
  • FIG. 2 is a left side view of FIG.
  • FIG. 3 is a right side view of FIG.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG.
  • FIG. 5 is a cross-sectional view taken along the BB spring in FIG.
  • FIG. 6a is a side view showing the inner centering spring.
  • FIG. 6b is a cross-sectional view taken along the line DD in FIG. 6a.
  • FIG. 7a is a side view showing an outer centering spring.
  • FIG. 7b is a front view of FIG. 7a.
  • FIG. 7c is a partial top view of FIG. 7b.
  • FIG. 8a is a side view showing the lever-side outer ring.
  • FIG. 8b is a cross-sectional view taken along line EE in FIG. 8a.
  • FIG. 9a is a side view showing the lever side plate.
  • FIG. 9b is a sectional view taken along line FF in FIG. 9a.
  • FIG. 10 is an enlarged cross-sectional view of a main part showing a caulking structure of a lever side outer ring and a lever side side plate.
  • FIG. 11 is a bottom view showing a case where the chamfered portion is a C chamfer in the caulking structure of FIG.
  • FIG. 12 is a bottom view showing a case where the chamfered portion is an R chamfer in the caulking structure of FIG.
  • FIG. 13a is a side view showing the inner ring.
  • FIG. 13b is a sectional view taken along the GG spring in FIG. 13a.
  • FIG. 14b is a sectional view taken along line H—H in FIG. 14a.
  • FIG. 14c is a cross-sectional view taken along the line II of FIG. 14b.
  • 15a] is a side view showing the brake side outer ring.
  • FIG. 16a is a side view showing the cover.
  • FIG. 16b is a sectional view taken along the line KK in FIG. 16a.
  • 17a] is a side view showing the brake side plate.
  • 17b is a cross-sectional view taken along line LL in FIG. 17a.
  • FIG. 18b is a cross-sectional view taken along line MM in FIG. 18a.
  • Fig. 19a is a side view showing the friction ring.
  • FIG. 19b is a sectional view taken along line NN in FIG. 19a.
  • FIG. 19c is a side view showing the opposite side of FIG. 19a.
  • FIG. 19d is an enlarged view of the main part showing the cylindrical protrusion of FIG. 19b.
  • FIG. 19e is an enlarged view of an essential part showing a modification (tapered protrusion) of the protrusion in FIG. 19b.
  • FIG. 19f is an enlarged view of a main part showing a modified example (stepped protrusion) of the protrusion of FIG. 19b.
  • FIG. 20 is a conceptual diagram showing a seat seat of an automobile.
  • Fig. 21a is a conceptual diagram showing one structural example of the sheet lifter part.
  • FIG. 21b is an enlarged view of the main part of FIG. 21a.
  • FIG. 22 is a view showing a pressing jig and a caulking jig used when the clutch unit (see FIG. 1) is assembled to the seat lifter.
  • Fig. 23 A diagram showing the pressing jig used when assembling the clutch unit (see Fig. 3) to the seat lifter.
  • FIG. 24 is a cross-sectional view showing the overall configuration of a conventional clutch unit.
  • FIG. 25 is a cross-sectional view taken along the OO spring in FIG.
  • FIG. 25 is a cross-sectional view taken along the line P—P in FIG.
  • FIG. 27 is a cross-sectional view showing the overall configuration of the clutch unit previously proposed by the present applicant.
  • FIG. 28 is a cross-sectional view taken along the Q—Q spring in FIG.
  • FIG. 29a is a cross-sectional view showing the lever-side outer ring of FIG.
  • FIG. 29b is a side view of FIG. 29a.
  • FIG. 30a is a cross-sectional view showing the lever side plate of FIG.
  • FIG. 30b is a side view of FIG. 30a.
  • FIG. 31 is a partial plan view showing a state before the claw portion of the lever side plate is crimped to the lever side outer ring.
  • FIG. 32 is a partial plan view showing a state after the claw portion of the lever side plate is crimped to the lever side outer ring.
  • FIG. 33 is a partial cross-sectional view showing a state after the claw portion of the lever side side plate is crimped to the lever side outer ring.
  • Second elastic member (outer centering spring) Stationary member (brake side outer ring) Stationary member (brake side plate) Output member (output shaft) Engagement element (cylindrical roller)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'unité d'embrayage selon l'invention permet d'obtenir un haut degré de contact étroit entre une bague extérieure du côté levier et une flasque latérale du côté levier, ainsi que d'améliorer la résistance d'une partie où la bague et la flasque latérale sont empilées ensemble. L'unité d'embrayage est construite à partir d'une section d'embrayage du côté levier (11) et d'une section d'embrayage du côté frein (12). La section d'embrayage du côté levier est disposée sur le côté d'entrée et commande, par l'actionnement du levier, la transmission et l'interruption du couple de rotation vers le côté de sortie. La section d'embrayage du côté frein (12) est disposée sur le côté de sortie, transmet le couple d'entraînement depuis la section d'embrayage du côté levier (11) jusqu'au côté de sortie, et interrompt le couple d'entraînement inverse depuis le côté de sortie. Un élément du côté d'entrée de la section d'embrayage du côté levier (11) dispose de la bague extérieure du côté levier (14), construite à partir d'un élément de type tôle perforée, ainsi que de la flasque latérale du côté levier (13), fixée par empilage sur la bague extérieure du côté levier (14). La bague extérieure du côté levier (14) est jointe à la flasque latérale du côté levier (13), avec le côté de la bague extérieure du côté levier (14) qui a une chute de cisaillement causée par le poinçonnage faisant face à la flasque latérale du côté levier (13). Une section chanfreinée (14d) est formée sur la bague extérieure du côté levier (14), sur le côté ayant des bavures causées par le poinçonnage, et la flasque latérale du côté levier (13) est empilée sur la bague extérieure du côté levier (14) à l'aide de la section chanfreinée (14d).
PCT/JP2007/067734 2006-09-21 2007-09-12 Unité d'embrayage Ceased WO2008035597A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006256332A JP2008075766A (ja) 2006-09-21 2006-09-21 クラッチユニット
JP2006-256332 2006-09-21

Publications (1)

Publication Number Publication Date
WO2008035597A1 true WO2008035597A1 (fr) 2008-03-27

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PCT/JP2007/067734 Ceased WO2008035597A1 (fr) 2006-09-21 2007-09-12 Unité d'embrayage

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JP (1) JP2008075766A (fr)
WO (1) WO2008035597A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105940234A (zh) * 2014-02-14 2016-09-14 Ntn株式会社 逆输入防止离合器
FR3118611A1 (fr) * 2021-01-05 2022-07-08 Faurecia Sièges d'Automobile Système de réglage de la hauteur d’un siège

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7068978B2 (ja) * 2018-09-20 2022-05-17 Ntn株式会社 クラッチユニット

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Publication number Priority date Publication date Assignee Title
JPH0557374A (ja) * 1991-09-02 1993-03-09 Kikuchi Press Kogyo Kk 面取り部付き穴の穴開け装置
JPH10216846A (ja) * 1997-01-30 1998-08-18 Konica Corp 写真フィルムパトローネと該パトローネのキャップ製造方法及び製造装置とキャップバリ処理装置
JP2002122160A (ja) * 2000-10-13 2002-04-26 Ntn Corp クラッチユニット
JP2003172377A (ja) * 2001-12-07 2003-06-20 Honda Motor Co Ltd 一方向クラッチの製造方法
JP2004338426A (ja) * 2003-05-13 2004-12-02 Fuji Kiko Co Ltd 車両用シートのハイト調整装置
JP2006052838A (ja) * 2004-07-15 2006-02-23 Ntn Corp クラッチユニット

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557374A (ja) * 1991-09-02 1993-03-09 Kikuchi Press Kogyo Kk 面取り部付き穴の穴開け装置
JPH10216846A (ja) * 1997-01-30 1998-08-18 Konica Corp 写真フィルムパトローネと該パトローネのキャップ製造方法及び製造装置とキャップバリ処理装置
JP2002122160A (ja) * 2000-10-13 2002-04-26 Ntn Corp クラッチユニット
JP2003172377A (ja) * 2001-12-07 2003-06-20 Honda Motor Co Ltd 一方向クラッチの製造方法
JP2004338426A (ja) * 2003-05-13 2004-12-02 Fuji Kiko Co Ltd 車両用シートのハイト調整装置
JP2006052838A (ja) * 2004-07-15 2006-02-23 Ntn Corp クラッチユニット

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105940234A (zh) * 2014-02-14 2016-09-14 Ntn株式会社 逆输入防止离合器
EP3106697A4 (fr) * 2014-02-14 2017-03-15 NTN Corporation Embrayage anti entrée inversée
US10359083B2 (en) 2014-02-14 2019-07-23 Ntn Corporation Reverse input blocking clutch
FR3118611A1 (fr) * 2021-01-05 2022-07-08 Faurecia Sièges d'Automobile Système de réglage de la hauteur d’un siège

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