WO2013108714A1 - 車両用シートリクライニング装置 - Google Patents
車両用シートリクライニング装置 Download PDFInfo
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- WO2013108714A1 WO2013108714A1 PCT/JP2013/050389 JP2013050389W WO2013108714A1 WO 2013108714 A1 WO2013108714 A1 WO 2013108714A1 JP 2013050389 W JP2013050389 W JP 2013050389W WO 2013108714 A1 WO2013108714 A1 WO 2013108714A1
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- WIPO (PCT)
- Prior art keywords
- bracket
- teeth
- pole
- guide
- vehicle seat
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- 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
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/235—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
Definitions
- the present invention relates to a vehicle seat reclining device for adjusting an inclination angle of a seat back with respect to a seat cushion.
- Patent Document 1 discloses a conventional vehicle seat reclining device. As shown in FIG. 6, this apparatus includes a base plate 91 fixed to the seat cushion, and a pair of guide portions 93 provided on the base plate 91. The pair of guide portions 93 are arranged in parallel to each other so as to form guide grooves 92 extending along the radial direction.
- the apparatus includes a tooth plate 94 that is secured to the seat back.
- the tooth plate 94 is formed with a fan-shaped recess 95 centered on the hinge.
- a tooth portion 96 is formed on the arcuate inner peripheral surface of the recess 95.
- a tooth member 97 is disposed in the guide groove 92 so as to be movable back and forth with respect to the tooth portion 96 of the tooth plate 94.
- the tooth member 97 is provided with a tooth portion 98 that can mesh with the tooth portion 96 of the tooth plate 94.
- the tooth member 97 is engaged with a cam that is biased in the direction of rotation by the biasing member.
- the tooth member 97 is urged by a biasing member in a forward direction in which a tooth portion 98 meshes with a tooth portion 96 of the tooth plate 94 via a cam.
- the tooth member 97 moves backward so as to release the engagement between the tooth portion 98 and the tooth portion 96 of the tooth plate 94. .
- the relative rotation of the base plate 91 and the tooth plate 94 is selectively allowed and restricted, and the inclination angle of the seat back with respect to the seat cushion can be adjusted and held at a required angle suitable for occupant seating.
- the tooth member 97 is formed with a side portion 99 parallel to the guide portion 93.
- the close contact portions 101 and 102 in contact with the side portion 99 of the tooth member 97 are formed so as to protrude.
- the contact area between the guide portion 93 and the side portion 99 of the tooth member 97 is reduced, and the tooth member 97 is brought into close contact with the guide portion 93 to such an extent that it can advance and retract toward the tooth portion 96 of the tooth plate 94. It is clamped by the guide part 93. Even when a load is applied to the seat back, the gap in the rotational direction around the center shaft can be kept to a minimum, and the rattling feeling of the seat back can be reduced.
- An object of the present invention is to provide a vehicle seat reclining device capable of suppressing deterioration of operability and operation feeling during release operation and generation of release noise.
- a first aspect of the present invention is a vehicle seat reclining device, wherein the first bracket is adapted to be fixed to one of a seat cushion and a seat back, and the first A second bracket provided on the bracket and adapted to be fixed to the other of the pair of guide portions forming the guide groove and the seat cushion and the seat back, and having an internal tooth;
- the inclination angle of the seat back with respect to the seat cushion can be adjusted with the relative rotation of the second bracket with respect to one bracket, and can be engaged with or detached from the inner teeth of the second bracket and the second bracket.
- a cam member rotatably provided on the first bracket; and a biasing member that biases the cam member in a rotating direction to move the pole in a direction in which the outer teeth and the inner teeth mesh with each other;
- a vehicle seat reclining device comprising: an operation member that rotates the cam member against the urging force of the urging member to move the pole in a direction in which the engagement between the outer teeth and the inner teeth is released. Is done.
- the guide portion has a tip portion located proximal to the inner teeth in the radial direction, and has a protruding portion at least at the tip portion, and the protruding portion includes the outer teeth and the inner teeth.
- An inclination fulcrum of the pole with respect to the guide portion that can be generated when meshing is released is disposed at a position closer to the inner tooth than an intersection of a normal line of a surface where the outer teeth and the inner teeth mesh with each other and the guide portion. Project in the circumferential direction.
- a vehicle seat reclining device the first bracket adapted to be fixed to one of a seat cushion and a seat back, the first bracket, and a guide groove.
- a second bracket adapted to be fixed to the other of the seat cushion and the seat back and having an internal tooth, the second bracket relative to the first bracket
- the guide groove having a second bracket capable of adjusting an inclination angle of the seat back with respect to the seat cushion with relative rotation, and external teeth that can be engaged with or detached from the internal teeth of the second bracket.
- a cam member provided; a biasing member that biases the cam member in a rotational direction to move the pole in a direction in which the outer teeth and the inner teeth mesh with each other; and the outer teeth and the inner teeth
- An inclination fulcrum of the pole with respect to the guide portion that can be generated when the meshing is released is disposed at a location closer to the inner tooth than an intersection of the normal line of the surface where the outer teeth and the inner teeth mesh with each other and the guide portion. Projecting in the circumferential direction so that the vehicle Over door reclining device is provided.
- the inclination fulcrum of the pole with respect to the guide portion that can occur when the external teeth and the internal teeth are disengaged is more than the intersection of the normal line of the external teeth and the internal teeth and the guide portion. It arrange
- the initial guide portion which is the material of the guide portion, is increased in strength by being quenched after being molded in the first pressing step, but its dimensional accuracy is reduced.
- the tip portion of the guide portion that is close to the internal teeth is formed by the initial pressing portion in the second pressing step, so that the dimensional accuracy is improved while maintaining the increased strength. Can be made.
- FIG. 1 is a side view showing a seat to which a vehicle seat reclining device according to an embodiment of the present invention is applied.
- the disassembled perspective view which shows the same embodiment.
- the longitudinal cross-sectional view which shows the same embodiment.
- (A) is an enlarged view which shows a guide wall
- (b) And (c) is explanatory drawing which shows the arrangement
- release operation respectively.
- A) is an enlarged view which shows the initial guide wall which is a raw material of a guide wall
- (b) is explanatory drawing which shows the moving amount
- (c) is FIG.
- FIG. 10 is an explanatory view showing the amount of movement of the tilt fulcrum before and after the second pressing step on the initial guide wall having a different shape, and (d) is a tilt fulcrum before and after the second pressing step with a crushing punch having a different shape.
- Explanatory drawing which shows the movement amount of. Schematic which shows partially the conventional vehicle seat reclining apparatus.
- FIG. 1 A vehicle seat reclining device according to an embodiment of the present invention will be described with reference to FIGS.
- a seat 2 that forms a seating portion for an occupant is installed on the vehicle floor 1.
- the seat 2 includes a seat cushion 3 that forms a seating surface, and a seat back 4 that is supported at a rear end portion of the seat cushion 3 via a substantially disc-shaped recliner 20 so as to tilt, that is, turn.
- the inclination angle of the seat back 4 with respect to the seat cushion 3 can be adjusted and held in multiple stages by the recliner 20 for each predetermined angle.
- seat 2 can adjust the position of a line of sight according to a physique, for example.
- the seated person of the seat 2 can adjust the sitting posture in accordance with, for example, the desired comfort.
- the recliner 20 includes a disk-shaped first bracket 21 and a second bracket 31 having a central axis O1 extending in the seat width direction.
- the first bracket 21 is fixed to the seat cushion 3, and the second bracket 31 is fixed to the seat back 4.
- “fixed to the seat cushion 3” means that the seat cushion 3 is attached in a manner that does not move relative to the seat cushion 3, and includes a case where the seat cushion 3 is fixed directly or indirectly to the seat cushion 3.
- “fixed to the seat back 4” means that the seat back 4 is attached in a manner that does not move relative to the seat back 4, and includes cases where it is fixed directly or indirectly to the seat back 4. .
- the first bracket 21 is formed by, for example, half blanking of a metal plate.
- the first bracket 21 has a circular recess 22 that opens toward the second bracket 31.
- the recess 22 has an inner peripheral surface 22a centered on the central axis O1.
- convex portions 23 as three substantially fan-shaped guide portions are arranged on the circumference at equal angular intervals.
- Each convex portion 23 forms guide walls 24 on both sides in the circumferential direction.
- the guide walls 24 facing each other in the circumferential direction of the adjacent protrusions 23 extend substantially parallel to each other in the radial direction centered on the center line O1.
- the opposing guide wall 24 forms a substantially U-shaped guide groove 26 extending in the radial direction in cooperation with the bottom surface of the recess 22.
- the guide grooves 26 are formed at equiangular intervals on the circumference.
- a substantially circular through hole 25 is formed at the center of the first bracket 21.
- the through hole 25 has a locking hole 25a formed so as to extend radially outward at a predetermined angular position.
- the second bracket 31 is formed, for example, by half-cutting a metal plate.
- the second bracket 31 has an outer peripheral surface 31 a having an outer diameter equivalent to the inner diameter of the inner peripheral surface 22 a of the first bracket 21.
- the 2nd bracket 31 has the circular through-hole 31b formed in the center part.
- the second bracket 31 has a substantially circular recess 32 that opens toward the first bracket 21.
- internal teeth 33 centering on the center line O1 are formed over the entire periphery.
- the second bracket 31 is fitted on the outer peripheral surface 31a so as to be in sliding contact with the inner peripheral surface 22a of the first bracket 21.
- the holding member 30 is mounted. The first bracket 21 and the second bracket 31 are prevented from coming off in the axial direction in a state where relative rotation is permitted by the holding member 30.
- first bracket 21 As shown in FIG. 2, between the first bracket 21 and the second bracket 31, there is a first pole 41A, a pair of second poles 41B, a cam 42, a release plate 43, and an urging member.
- a spiral spring 44 is provided between the first bracket 21 and the second bracket 31, between the first bracket 21 and the second bracket 31, there is a first pole 41A, a pair of second poles 41B, a cam 42, a release plate 43, and an urging member.
- a spiral spring 44 is provided.
- the cam 42 and the release plate 43 constitute a cam member.
- the first and second poles 41A and 41B are respectively mounted between the two adjacent guide walls 24, that is, in the guide groove 26, and are arranged at equiangular intervals on the circumference centered on the center line O1. Yes.
- the first pole 41A is produced, for example, by forging a steel material.
- the first pole 41A includes a first block 51 and a second block 52 that form a step with each other.
- the first block 51 and the second block 52 are arranged at a position close to the inner teeth 33 of the second bracket 31 and a position close to the center line O1, respectively.
- Outer teeth 54 that can mesh with the inner teeth 33 of the second bracket 31 are formed on the arc-shaped outer ends of the first block 51, that is, on the end surfaces facing the inner teeth 33 of the second bracket 31.
- An inner surface cam portion 55 that engages with the outer peripheral portion of the cam 42 is formed on the rear surface that is the end surface opposite to the inner end of the first block 51, that is, the outer end.
- a pole groove cam portion 56 penetrating in the thickness direction is formed at a substantially central portion of the second block 52.
- the first pole 41A is guided by the guide groove 26 so as to move in the radial direction centered on the center line O1 in such a manner that both width end portions thereof are in sliding contact with both guide walls 24.
- the outer teeth 54 of the first pole 41A and the inner teeth 33 of the second bracket 31 are engaged with each other or separated.
- the second pole 41B is produced, for example, by pressing a plate-shaped steel plate.
- the second pole 41B has a flat plate shape that does not have the step similar to the shape constituted by only the first block 51, omitting the second block 52 of the first pole 41A.
- Outer teeth 57 that can mesh with the inner teeth 33 of the second bracket 31 are formed on the arcuate outer ends of the second poles 41 ⁇ / b> B, that is, the end surfaces facing the inner teeth 33 of the second bracket 31.
- An inner surface cam portion 58 that engages with the outer peripheral portion of the cam 42 is formed on the rear surface that is the end surface opposite to the inner end of the second pole 41B, that is, the outer end.
- the second pole 41B is provided with an engaging protrusion 59 at the center in the width direction.
- the second pole 41B is guided so as to move in the radial direction about the center line O1 by the guide groove 26 in such a manner that both width end portions thereof are in sliding contact with both guide walls 24. As the second pole 41B advances and retreats along the guide groove 26 in the radial direction, the outer teeth 57 of the second pole 41B and the inner teeth 33 of the second bracket 31 are engaged with each other and separated.
- the cam 42 is rotatably disposed on the center line O1 inside the first and second poles 41A and 41B in the recess 32 of the second bracket 31.
- the cam 42 is produced by, for example, pressing a plate-shaped steel plate, and has a flat plate shape without a step.
- the cam 42 has three sets of cam surfaces 65 at equiangular intervals on the circumference on the outer periphery thereof. Further, a substantially elliptical fitting hole 66 is formed at the center of the cam 42.
- Each cam surface 65 can abut against the opposing inner surface cam portions 55 and 58 of the corresponding first and second poles 41A and 41B, and rotates in the direction in which the cam 42 is locked (hereinafter referred to as “lock direction”). When it is moved, the corresponding inner surface cam portions 55 and 58 are pressed.
- each cam surface 65 becomes the inner surface cam of the corresponding first and second poles 41A and 41B. Separated from the portions 55 and 58.
- a plurality of engaging projections 67 are provided on the side surface of the cam 42 at intervals on the circumference.
- One of the engagement protrusions 67 is inserted into the pole groove cam portion 56 of the first pole 41A and engaged with the first pole 41A.
- the pole groove cam portion 56 and the engagement protrusion 67 act so as to move the first pole 41A radially inward by the rotation of the cam 42 in the unlocking direction.
- a release plate 43 having a substantially semicircular thin plate shape is engaged with an engagement protrusion 67 and integrally attached.
- the release plate 43 is attached to the cam 42 so as to coincide with the second block 52 of the first pole 41A in the axial direction, and is disposed so as to be slidably opposed to the end surfaces of both the second poles 41B.
- both the second poles 41B and the release plate 43 are accommodated within the thickness range of the first pole 41A.
- the release plate 43 is opened in an angle range corresponding to the first pole 41A. Therefore, it is avoided that the release plate 43 interferes with the first pole 41A due to the rotation of the release plate 43 integrally with the cam 42.
- the release plate 43 is formed with two release plate groove cam portions 69 penetrating in the thickness direction. In these release plate groove cam portions 69, engaging projections 59 formed on both second poles 41B are inserted and engaged with the release plate 43, respectively.
- the release plate groove cam portion 69 and the engagement protrusion 59 act to move the second pole 41B radially inward by the rotation of the cam 42 and the release plate 43 in the unlocking direction.
- the spiral spring 44 urges the cam 42 to rotate in a direction (lock direction) in which the first and second poles 41A and 41B are engaged with the second bracket 31.
- the spiral spring 44 is accommodated in the through hole 25 of the first bracket 21.
- the spiral spring 44 is formed, for example, by bending a substantially rectangular flat wire into a predetermined spiral shape, and is disposed between the first bracket 21 and the cam 42. That is, the outer leg portion 44 a of the spiral spring 44 is locked in the locking hole 25 a, and the inner leg portion 44 b is locked in a locking portion (not shown) provided on the end face of the cam 42.
- the cam 42 is biased so as to rotate in the locking direction with respect to the first bracket 21.
- the cam 42 presses the first and second poles 41 ⁇ / b> A and 41 ⁇ / b> B outward in the radial direction by the cam surface 65, and the respective external teeth 54 and 57 are engaged with the internal teeth 33 of the second bracket 31.
- the recliner 20 is inserted with a hinge pin 70 made of, for example, a metal rod along the center line O1.
- the hinge pin 70 has a substantially elliptical columnar fitting shaft portion 71 fitted into the fitting hole 66 of the cam 42, and a substantially cylindrical shaft portion pivotally supported by the second bracket 31 (through hole 31b). 72.
- tip part of the fitting shaft part 71 inserted by the fitting hole 66 of the cam 42 is penetrated through the 1st bracket 21 (through-hole 25), and protrudes outside.
- a release lever 76 as an arm-shaped operation member made of, for example, a metal plate is connected to the tip end portion of the fitting shaft portion 71 protruding outward from the first bracket 21 (through hole 25) so as to rotate integrally. ing. Therefore, when the release lever 76 is rotated in one direction (corresponding to the unlocking direction of the cam 42) around the center line O1, the hinge pin 70 and the cam 42 are rotated in conjunction with this. At this time, when the cam 42 and the release plate 43 are rotated in the unlocking direction, the first pole 41A and the second poles 41B are moved radially inward, and the recliner 20 is freely rotatable.
- each guide wall 24 of the convex portion 23 is divided into approximately three regions in the extending direction. The three regions respectively correspond to the first projecting portion 24a, the main body portion 24b, and the second projecting portion 24c as the projecting portions in order from the side closer to the inner teeth 33.
- the main body 24b has a substantially planar shape.
- the main body portion 24 b is slightly inclined so that the width of the guide groove 26 formed between the adjacent guide walls 24 (main body portion 24 b) gradually decreases as it approaches the inner teeth 33. That is, the pair of main body portions 24b (guide walls 24) that form the guide grooves 26 have an inverted V shape.
- the 1st protrusion part 24a protrudes in the circumferential direction with respect to the main-body part 24b. This is because when the engagement between the external teeth 54, 57 of the first and second poles 41A, 41B and the internal teeth 33 of the second bracket 31 is released, the movement of the first and second poles 41A, 41B, That is, to make the retreat more smooth.
- the first pole 41A is moved backward so as to release the engagement of the external teeth 54 of the first pole 41A and the internal teeth 33 of the second bracket 31.
- the first pole 41A tends to rotate in conjunction with the cam 42 that rotates in the unlocking direction.
- the first pole 41A is second in the direction of the normal N1 of the meshing surfaces of the outer teeth 54a and the inner teeth 33a in the center in the width direction. It is pushed from the bracket 31 and tries to tilt with respect to the guide wall 24.
- the tilt fulcrum Pf ⁇ b> 1 which is a portion where the first pole 41 ⁇ / b> A abuts on the guide wall 24, that is, in close contact with the normal wall N ⁇ b> 1 and the guide wall 24. Is located closer to the internal tooth 33 than the intersection Pi1.
- the first pole 41A mainly has one end in the width direction, that is, the outer teeth 54b and the inner end of the leading end in the rotational direction of the cam 42.
- the tooth 33b is pushed from the second bracket 31 in the direction of the normal line N2 of the meshing surface of the teeth 33b and tries to tilt with respect to the guide wall 24.
- the tilt fulcrum Pf2 which is a portion where the first pole 41A abuts on the guide wall 24, that is, is in close contact with the normal wall N2 and the guide wall. It is located at a location closer to the internal tooth 33 than the intersection Pi2 with 24.
- the tilt fulcrum Pf which is the portion where the first pole 41A abuts on the guide wall 24, that is, the intimate contact point, gradually increases.
- the intersection Pi between the outer teeth 54 and the normal N of the meshing surface of the inner teeth 33 and the guide wall 24 gradually approaches the inner teeth 33. Therefore, from the above relationship, the tilt fulcrum Pf is located closer to the internal tooth 33 than the intersection Pi throughout the entire period of the release operation.
- the first protrusion 24a is formed so as not to reverse the above-described arrangement relationship between the tilt fulcrum Pf and the intersection Pi in the releasing operation.
- the first pole 41A pushed from the second bracket 31 swings around the tilt fulcrum Pf so as to suppress the tilt with respect to the moving direction, and the first pole 41A moves smoothly, that is, moves backward.
- the movable direction and posture of the first pole 41A related to the detachability of the first pole 41A from the internal teeth 33 (second bracket 31) are controlled predominantly by the inclination fulcrum Pf serving as a fulcrum of the behavior.
- an inclination fulcrum Pf having a required arrangement relationship is secured by the first protrusion 24a formed on the guide wall 24.
- the second protrusion 24c also protrudes in the circumferential direction with respect to the main body 24b. This is to further stabilize the posture during the movement of the first pole 41A, that is, the advance / retreat operation. That is, once the release operation is completed, the first pole 41A is moved by the guide wall 24 (guide groove 26) without moving from the second bracket 31, that is, moved backward. At this time, the posture of the first pole 41A is supported in a more stable state by two-point support by the first and second protrusions 24a and 24c. The same applies to the case where the first pole 41A is advanced so as to mesh the external teeth 54 of the first pole 41A and the internal teeth 33 of the second bracket 31.
- the protrusion length to the circumferential direction with respect to the main-body part 24b of the 2nd protrusion part 24c is set substantially the same as the protrusion length to the circumferential direction with respect to the main-body part 24b of the 1st protrusion part 24a.
- the first protruding portion 24a apparently protrudes in the circumferential direction from the second protruding portion 24c by an amount corresponding to the inclination of the main body portion 24b. For this reason, at the beginning of the release operation, the relationship between each guide wall 24 and the first and second poles 41A and 41B becomes dominant by the first projecting portion 24a, and the aforementioned smooth movement, that is, the backward movement is realized. ing.
- the first and second poles 41A and 41B are normal to the meshing surfaces of the outer teeth 54 and 57 and the inner teeth 33, respectively. It is pushed in the direction from the second bracket 31 and tries to tilt with respect to the guide wall 24. At this time, since the first protrusion 24 a is formed on the guide wall 24, the inclination fulcrum of each of the first and second poles 41 ⁇ / b> A and 41 ⁇ / b> B is more internal than the intersection of the normal line and the guide wall 24. Located near 33. For this reason, the movement of the first and second poles 41A and 41B, that is, the backward movement is further smoothed in the above-described manner.
- the first bracket 21 is tempered after being formed by the above-mentioned half-cutting in the first pressing step.
- the initial convex portion W as an initial guide portion that is a material of the convex portion 23 has an initial guide wall Wg that is a material of the guide wall 24.
- the initial guide wall Wg is roughly divided into two regions in the extending direction. The two regions respectively correspond to the first material portion Wga and the second material portion Wgb in order from a location close to the internal tooth 33.
- the first material portion Wga has a substantially planar shape, and gradually increases as the distance from the adjacent initial guide wall Wg (first material portion Wga) (corresponding to the opening width of the guide groove 26) approaches the internal teeth 33. Slightly inclined to reduce. That is, both the adjacent first material portions Wga have an inverted V shape.
- the second material portion Wgb protrudes in the circumferential direction with respect to the connection portion with the first material portion Wga (the tip distal to the internal teeth 33 of the first material portion Wga).
- the proximal wall 33 is proximal to the internal teeth 33 of the first material portion Wga.
- the tip end portion (corresponding to the first projecting portion 24a of the guide wall 24) and the second material portion Wgb are crushed by crushing punches P1 and P2 each having a substantially square block shape.
- the meat of the tip portion proximal to the inner teeth 33 of the first material portion Wga moves so as to project in the circumferential direction to form the first projecting portion 24a, and the meat of the second material portion Wgb surrounds the circumference.
- the second protruding portion 24c is formed by moving so as to protrude in the direction.
- a guide wall 24 is formed from the initial guide wall Wg.
- the guide wall 24 is formed in the second pressing step when it is tempered for the purpose of increasing the strength after the first pressing step, for example, leading to the initial guide wall Wg of the initial convex portion W as the dimensional accuracy decreases. This is to improve sink marks generated at the corners.
- the inclination fulcrum Pf of the first and second poles 41A and 41B with respect to the first protrusion 24a (guide wall 24) is the inclination with respect to the first material portion Wga (initial guide wall Wg). It is shown together with the fulcrum Pfs. As shown in the figure, the tilt fulcrum Pf at the first projecting portion 24a is more than the tilt fulcrum Pfs at the first material portion Wga by the amount that the tip of the first material portion Wga is protruded in the circumferential direction. It is located at a location far from the internal teeth 33.
- both the tilting fulcrums Pf are caused by the inclination of the first material portion Wga in the above-described manner and the crushing punch P1 separated from the crushing punch P2 by crushing the front end portion of the first material portion Wga. , Pfs is reduced. That is, the amount of movement of the tilt fulcrum (Pf, Pfs) before and after the second pressing step is reduced.
- FIG. 5C the tip portion proximal to the inner teeth 33 with respect to the initial guide wall Wg91 extending over the entire length in the moving direction of the first and second poles 41A and 41B without the aforementioned inclination.
- the position of the tilt fulcrum Pf91 when crushing with the crushing punch P1 is shown.
- the amount of movement of the tilt fulcrum (Pf91, Pfs) before and after the second pressing step is relatively enlarged, that is, in the aforementioned release operation, the tilt fulcrum Pf and the intersection Pi It is confirmed that there is a higher possibility that the arrangement relationship with is reversed.
- FIG. 5D shows the position of the tilt fulcrum Pf92 when the initial guide wall Wg91 is crushed by the crushing punch P3 extending over substantially the entire length thereof.
- the movement amount of the tilt fulcrum (Pf92, Pfs) before and after the second pressing step is further expanded, that is, in the above-described releasing operation, the tilt fulcrum Pf and the intersection Pi are It is confirmed that the possibility that the arrangement relationship is reversed is further increased. This is because the initial guide wall Wg91 crushed by the crushing punch P3 runs out in the circumferential direction over substantially the entire length thereof.
- the amount of movement of the tilt fulcrum (Pf, Pfs) before and after the second pressing step is relatively reduced.
- the possibility that the arrangement relationship between the tilt fulcrum Pf and the intersection Pi is reversed is reduced.
- the dimensional accuracy may be managed by concentrating on the first projecting portion 24a. For this reason, for example, the arrangement relationship can be realized more simply than in the case where the dimensional accuracy is managed over the entire length of the guide wall 24 in the radial direction. And the productivity, robustness, and manufacturability of the first bracket 21 can be improved, and as a result, the cost can be reduced.
- the first and second projecting portions 24a and 24c (both end portions of the guide wall 24 in the radial direction) project in the circumferential direction, so that the pole 41A is moved when the poles 41A and 41B move, that is, advance and retract. , 41B can be supported in a more stable state by these two protruding portions.
- the dimensional accuracy of the first and second protrusions 24a and 24c is improved in the second pressing step, so that the postures of the poles 41A and 41B can be supported in a more stable state. Accordingly, the poles 41A and 41B can be moved more smoothly, and as a result, the outer teeth 54 and 57 and the inner teeth 33 can be engaged or disengaged more smoothly.
- the dimensional accuracy may be managed by concentrating on the first and second projecting portions 24a and 24c. For this reason, for example, the posture stabilization can be realized more easily than in the case where the dimensional accuracy is managed over the entire length of the guide wall 24 in the radial direction. And the productivity, robustness, and manufacturability of the first bracket 21 can be improved, and as a result, the cost can be reduced.
- the pair of guide walls 24 forming the guide groove 26 have a symmetrical shape, but the first projecting portion 24a is on one side related to the release operation of the poles 41A and 41B (the delay side in the unlocking direction of the cam 42). It may be provided only on the guide wall 24.
- the shape of the guide wall 24 is an example, and the tip portion proximal to the inner tooth 33 is circumferentially arranged so that the tilt fulcrum Pf is located closer to the inner tooth 33 than the intersection Pi throughout the entire period of the release operation. It only has to protrude.
- each guide wall 24 may have a planar shape that is inclined so as to form an inverted V shape with the adjacent guide wall 24 that forms the guide groove 26. Further, when the first bracket 21 (guide wall 24) is formed by cutting, the first bracket 21 (guide wall 24) may be formed in an arbitrary shape that satisfies the above conditions.
- the “total period of the release operation” is from immediately after the start of meshing release of the outer teeth 54 and 57 of the poles 41A and 41B and the inner tooth 33 to immediately before completion of meshing release, and is along the guide groove 26. It does not include the subsequent movement period of the poles 41A and 41B.
- the number of poles (41A, 41B) disposed in the first bracket 21 is arbitrary.
- the plurality of poles may have different shapes or the same shape as long as these operations are linked.
- the release plate 43 is omitted.
- first bracket 21 may be fixed to the seat back 4 and the second bracket 31 may be fixed to the seat cushion 3.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims (7)
- 車両用シートリクライニング装置であって、
シートクッション及びシートバックの一方に固定されるように適合された第1ブラケットと、
前記第1ブラケットに設けられるとともに、ガイド溝を形成する一対のガイド部と、
前記シートクッション及び前記シートバックの他方に固定されるように適合されるとともに、内歯を有する第2ブラケットであって、前記第1ブラケットに対する前記第2ブラケットの相対回動に伴って前記シートクッションに対する前記シートバックの傾斜角度が調整可能である、第2ブラケットと、
前記第2ブラケットの前記内歯に係合又は離脱可能な外歯を有し前記ガイド溝によって径方向へ移動するように案内されるポールと、
前記ポールに係合されて前記第1ブラケットに回動自在に設けられたカム部材と、
前記外歯及び前記内歯が互いに噛合する方に向前記ポールを移動すべく前記カム部材を回動方向に付勢する付勢部材と、
前記外歯及び前記内歯の噛合が解除する方向に前記ポールを移動すべく前記付勢部材の付勢力に抗して前記カム部材を回動させる操作部材とを備え、
前記ガイド部は、前記径方向において前記内歯に対して近位に位置する先端部を有するとともに、少なくとも前記先端部に突出部を有し、前記突出部は、前記外歯及び前記内歯の噛合解除時に生じうる前記ガイド部に対する前記ポールの傾き支点が、前記外歯及び前記内歯が互いに噛合する面の法線と前記ガイド部との交点よりも前記内歯に近い箇所に配置されるように周方向に突出する、車両用シートリクライニング装置。 - 請求項1に記載の車両用シートリクライニング装置において、
前記ガイド部は、前記径方向において前記内歯に対して遠位に位置する基端部を有し、
前記突出部は、前記先端部に位置する第1突出部と、前記基端部に位置する第2突出部とを含む、車両用シートリクライニング装置。 - 請求項2に記載の車両用シートリクライニング装置において、
前記ポールは、前記第1及び第2突出部によって2点で支持されながら前記ガイド溝に沿って案内される、車両用シートリクライニング装置。 - 請求項1~3の何れか一項に記載の車両用シートリクライニング装置において、
前記外歯及び前記内歯の噛合の解除動作の全期間を通じて、前記傾き支点が前記交点よりも内歯に近い箇所に位置する、車両用シートリクライニング装置。 - 請求項1~4の何れか一項に記載の車両用シートリクライニング装置において、
前記一対のガイド部は、前記ガイド溝の幅が前記内歯に近付くに従って徐々に縮小するように僅かに傾斜している、車両用シートリクライニング装置。 - 車両用シートリクライニング装置であって、
シートクッション及びシートバックの一方に固定されるように適合された第1ブラケットと、
前記第1ブラケットに設けられるとともに、ガイド溝を形成する一対のガイド部と、
前記シートクッション及び前記シートバックの他方に固定されるように適合されるとともに、内歯を有する第2ブラケットであって、前記第1ブラケットに対する前記第2ブラケットの相対回動に伴って前記シートクッションに対する前記シートバックの傾斜角度が調整可能である、第2ブラケットと、
前記第2ブラケットの前記内歯に係合又は離脱可能な外歯を有し前記ガイド溝によって径方向へ移動するように案内されるポールと、
前記ポールに係合されて前記第1ブラケットに回動自在に設けられたカム部材と、
前記外歯及び前記内歯が互いに噛合する方向に前記ポールを移動すべく前記カム部材を回動方向に付勢する付勢部材と、
前記外歯及び前記内歯の噛合が解除する方向に前記ポールを移動すべく前記付勢部材の付勢力に抗して前記カム部材を回動させる操作部材と、
前記ガイド部に設けられ前記内歯に対して近位に位置する先端部とを備え、
前記先端部は、第1のプレス工程で成形された後に焼き入れが施された初期ガイド部を第2のプレス工程で成形することにより、前記外歯及び前記内歯の噛合解除時に生じうる前記ガイド部に対する前記ポールの傾き支点が、前記外歯及び前記内歯が互いに噛合する面の法線と前記ガイド部との交点よりも前記内歯に近い箇所に配置されるように周方向に突出している、車両用シートリクライニング装置。 - 請求項6に記載の車両用シートリクライニング装置において、
前記ガイド部は前記径方向において前記内歯に対して遠位に位置する基端部を有し、前記基端部は、前記初期ガイド部を前記第2のプレス工程で成形することにより、前記周方向に突出している、車両用シートリクライニング装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP13738194.3A EP2805849B1 (en) | 2012-01-19 | 2013-01-11 | Vehicle seat reclining device |
CN201380005641.XA CN104080648B (zh) | 2012-01-19 | 2013-01-11 | 车辆用座椅倾斜装置 |
US14/350,614 US9248761B2 (en) | 2012-01-19 | 2013-01-11 | Vehicle seat reclining device |
BR112014012010A BR112014012010A2 (pt) | 2012-01-19 | 2013-01-11 | dispositivo de reclinamento de assento de veículo |
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JP2012009315A JP5673571B2 (ja) | 2012-01-19 | 2012-01-19 | 車両用シートリクライニング装置 |
JP2012-009315 | 2012-01-19 |
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PCT/JP2013/050389 WO2013108714A1 (ja) | 2012-01-19 | 2013-01-11 | 車両用シートリクライニング装置 |
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US (1) | US9248761B2 (ja) |
EP (1) | EP2805849B1 (ja) |
JP (1) | JP5673571B2 (ja) |
CN (1) | CN104080648B (ja) |
BR (1) | BR112014012010A2 (ja) |
WO (1) | WO2013108714A1 (ja) |
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JP6431254B2 (ja) * | 2013-09-30 | 2018-11-28 | トヨタ紡織株式会社 | リクライナ |
US9216667B1 (en) * | 2014-09-09 | 2015-12-22 | Ts Tech Co., Ltd. | Vehicle seat |
EP3208140B1 (en) * | 2014-10-16 | 2020-03-04 | Delta Tooling Co., Ltd. | Torque transfer control mechanism and seat structure |
JP2018199481A (ja) * | 2017-05-25 | 2018-12-20 | トヨタ紡織株式会社 | 乗物用シートリクライニング装置 |
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JP2000201759A (ja) * | 1999-01-20 | 2000-07-25 | Imasen Electric Ind Co Ltd | リクライニング装置 |
JP2004357799A (ja) * | 2003-06-02 | 2004-12-24 | Fuji Kiko Co Ltd | 車両用シートリクライニング装置 |
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JPS5911644Y2 (ja) | 1979-01-31 | 1984-04-10 | アイシン精機株式会社 | 自動車用シ−トリクライナ− |
US5813724A (en) | 1995-06-23 | 1998-09-29 | Fuji Kiko Co., Ltd. | Adjustable hinge mount for reclinable seat |
JPH11169253A (ja) | 1997-12-15 | 1999-06-29 | Ikeda Bussan Co Ltd | 内歯式リクライニングデバイス |
JP4318793B2 (ja) * | 1999-06-01 | 2009-08-26 | デルタ工業株式会社 | シートのリクライナ構造 |
JP2002101993A (ja) | 2000-09-29 | 2002-04-09 | Delta Kogyo Co Ltd | シートのリクライナ構造 |
JP2002177083A (ja) | 2000-12-18 | 2002-06-25 | Imasen Electric Ind Co Ltd | リクライニング装置 |
JP2002177084A (ja) | 2000-12-18 | 2002-06-25 | Imasen Electric Ind Co Ltd | リクライニング装置 |
JP3974355B2 (ja) | 2001-08-31 | 2007-09-12 | シロキ工業株式会社 | リクライニング装置 |
JP3804597B2 (ja) | 2002-09-20 | 2006-08-02 | トヨタ紡織株式会社 | リクライニング装置 |
JP4185750B2 (ja) | 2002-10-01 | 2008-11-26 | 富士機工株式会社 | 車両用シートリクライニング装置 |
US6854802B2 (en) * | 2002-10-01 | 2005-02-15 | Fujikiko Kabushiki Kaisha | Seat recliner for vehicle |
DE10253054B4 (de) * | 2002-11-14 | 2007-01-18 | Keiper Gmbh & Co.Kg | Beschlag für einen Fahrzeugsitz |
JP4041095B2 (ja) * | 2004-05-14 | 2008-01-30 | 富士機工株式会社 | 自動車用シートリクライニング装置のガタ防止構造 |
JP4984914B2 (ja) * | 2007-01-24 | 2012-07-25 | アイシン精機株式会社 | 車両用シートリクライニング装置 |
JP5098867B2 (ja) * | 2008-07-15 | 2012-12-12 | アイシン精機株式会社 | シートリクライニング装置 |
KR101577849B1 (ko) | 2008-08-22 | 2015-12-15 | 마그나 시팅 인크. | 감소된 백래쉬를 갖는 디스크 리클라이너 |
FR2951413B1 (fr) * | 2009-10-20 | 2012-02-24 | Faurecia Sieges Automobile | Mecanisme de reglage de siege de vehicule automobile, et siege de vehicule |
-
2012
- 2012-01-19 JP JP2012009315A patent/JP5673571B2/ja active Active
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2013
- 2013-01-11 BR BR112014012010A patent/BR112014012010A2/pt not_active IP Right Cessation
- 2013-01-11 CN CN201380005641.XA patent/CN104080648B/zh not_active Expired - Fee Related
- 2013-01-11 WO PCT/JP2013/050389 patent/WO2013108714A1/ja active Application Filing
- 2013-01-11 US US14/350,614 patent/US9248761B2/en active Active
- 2013-01-11 EP EP13738194.3A patent/EP2805849B1/en not_active Not-in-force
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JP2000189267A (ja) * | 1995-06-23 | 2000-07-11 | Fuji Kiko Co Ltd | 車両シ―ト用リクライナ― |
JP2000201759A (ja) * | 1999-01-20 | 2000-07-25 | Imasen Electric Ind Co Ltd | リクライニング装置 |
JP2004357799A (ja) * | 2003-06-02 | 2004-12-24 | Fuji Kiko Co Ltd | 車両用シートリクライニング装置 |
Also Published As
Publication number | Publication date |
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EP2805849A4 (en) | 2015-06-03 |
CN104080648B (zh) | 2016-05-25 |
EP2805849B1 (en) | 2016-08-24 |
BR112014012010A2 (pt) | 2017-05-30 |
JP2013147155A (ja) | 2013-08-01 |
CN104080648A (zh) | 2014-10-01 |
US20140284989A1 (en) | 2014-09-25 |
EP2805849A1 (en) | 2014-11-26 |
JP5673571B2 (ja) | 2015-02-18 |
US9248761B2 (en) | 2016-02-02 |
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