WO2011105341A1 - アームレスト装置 - Google Patents
アームレスト装置 Download PDFInfo
- Publication number
- WO2011105341A1 WO2011105341A1 PCT/JP2011/053751 JP2011053751W WO2011105341A1 WO 2011105341 A1 WO2011105341 A1 WO 2011105341A1 JP 2011053751 W JP2011053751 W JP 2011053751W WO 2011105341 A1 WO2011105341 A1 WO 2011105341A1
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- WO
- WIPO (PCT)
- Prior art keywords
- armrest
- locking piece
- elastic member
- plate
- armrest body
- Prior art date
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Classifications
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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
- B60N2/75—Arm-rests
- B60N2/763—Arm-rests adjustable
- B60N2/767—Angle adjustment
-
- 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
- B60N2/75—Arm-rests
- B60N2/753—Arm-rests movable to an inoperative position
Definitions
- the present invention relates to an armrest device that is attached to a vehicle seat or a furniture seat, and more particularly to an armrest device in which an armrest body can be adjusted in angle.
- FIG. 39 shows the vehicle seat 1, with the seat back 3 standing up at the rear of the seat cushion 2, and the armrest 4 attached to the side surface of the seat back 3.
- the armrest 4 is rotatable with respect to the seat back 3 in forward and reverse directions indicated by arrows A and B.
- Arrow A is the opening direction of the armrest 4
- arrow B is the closing direction of the armrest 4.
- the armrest 4 can be rotated in the forward / reverse direction from a horizontal position of ⁇ 0 indicated by a solid line to a vertical position of ⁇ 2 indicated by a chain line.
- the armrest 4 is used at the horizontal position and is stored at the vertical position.
- the armrest 4 can be adjusted in angle within a range of ⁇ 0 to ⁇ 2.
- Patent Document 1 discloses a conventional structure that allows the armrest 4 to be adjusted in angle.
- FIGS. 40 to 42 are conventional armrest devices capable of adjusting the angle described in Patent Document 1 and the like, and the structure thereof will be described below.
- FIG. 40 is a front view of the conventional armrest device 100
- FIG. 41 is a sectional view taken along the line a1-a2
- FIG. 42 is a sectional view taken along the line a3-a4.
- the armrest device 100 includes an armrest body 120, a gear plate 130, a ratchet plate 140, and a spring (torsion spring) 150.
- the armrest main body 120 is rotatably attached to a seat frame (back frame) 110 of a seat back by a mounting bolt 160.
- a bracket plate 170 in which two plate materials are welded is provided between the mounting bolt 160 and the armrest body (see FIGS. 41 and 42).
- the gear plate 130 is fixed to the seat frame 110 by mounting bolts 160 so as to be positioned on the surface of the armrest body 120.
- Serrated locking teeth 131 are formed on the outer periphery of the gear plate 130.
- a protruding portion 132 that protrudes higher than the locking teeth 131 toward the ratchet plate 140 side is formed at one end portion of the locking teeth 131.
- the ratchet plate 140 is attached to the armrest body 120 so as to be adjacent to the gear plate 130 on the locking tooth 131 side.
- the ratchet plate 140 is rotatably attached to the armrest body 120 by pins 180.
- the ratchet plate 140 is formed with serrated locking teeth 141 that engage with the locking teeth 131 of the gear plate 130.
- a first engagement convex portion 142 is formed at one end of the ratchet plate 140 opposite to the locking teeth 141, and the locking teeth 141 and the first engagement convex portions 142 are connected to each other.
- a second engagement convex portion 143 is formed between them. These engaging convex portions 142 and 143 are formed so as to correspond to the convex portions 132 of the gear plate 130.
- the locking teeth 141 of the ratchet plate 140 and the locking teeth 131 of the gear plate 130 are loose in the opening direction A (see FIG. 40) of the armrest main body 120 and can get over each other. Has stood up and is unable to get over.
- the bracket plate 171 is disposed so as to be sandwiched between the armrest body 120 (see FIGS. 41 and 42).
- the spring 150 has one end 151 penetrating the armrest body 120 in the plate thickness direction and is locked to the armrest body 120, and the other end 152 is locked to the ratchet plate 140. As a result, the spring 150 urges the ratchet plate 140 to rotate so that the locking teeth 141 engage with the locking teeth 131 of the gear plate 130.
- FIG. 40 shows a state where the armrest main body 120 is in a horizontal position (solid line position in FIG. 39), and the locking teeth 141 of the ratchet plate 140 are engaged with the locking teeth 131 of the gear plate 130.
- the armrest body 120 is rotated in the opening direction (direction A) between ⁇ 0 and ⁇ 1 shown in FIG. 39, the locking teeth 141 get over the locking teeth 131 of the gear plate 130, so that the ratchet plate 140 Rotate.
- the armrest main body 120 is rotated in the closing direction (B direction) between ⁇ 0 and ⁇ 1
- the locking teeth 141 are engaged with the locking teeth 131 of the gear plate 130
- the ratchet plate 140 is engaged with the gear plate 130 and the pin 180. It is sandwiched between. Thereby, the armrest main body 120 will be in a rotation lock state.
- the armrest main body 120 when the armrest main body 120 is rotated in the opening direction (direction A) between ⁇ 1 and ⁇ 2, the second engagement convex portion 143 gets over the convex portion 132 of the gear plate 130 and the ratchet plate 140 rotates clockwise in ⁇ 1. Rotate to. Due to this rotation, the locking teeth 141 are separated from the locking teeth 131 of the gear plate 130, so that the locking teeth 131, 141 are disengaged. Accordingly, the armrest body 120 can rotate in both directions A and B between ⁇ 1 and ⁇ 2.
- the armrest body 120 When the armrest body 120 is rotated from the retracted position (position of ⁇ 2) shown in the chain line in FIG. 39 to the closing direction (direction B) and returned to ⁇ 0, the first engaging convex portion 142 gets over the convex portion 132 of the gear plate 130.
- the ratchet plate 140 rotates counterclockwise. Thereby, the locking teeth 141 of the ratchet plate 140 and the locking teeth 131 of the gear plate 130 are engaged. With the above structure, the angle of the armrest body 120 can be adjusted.
- the ratchet plate 140 is biased by the spring 150, and when the armrest body 120 is rotated in the opening direction (A direction), the ratchet plate 140 is rotated by all spring loads of the spring 150. Therefore, when the locking tooth 141 of the ratchet plate 140 gets over the locking tooth 131 of the gear plate 130 and moves to the next locking tooth, it bites in vigorously. For this reason, a loud sound is generated. In particular, when the size of the ratchet plate 140 is large or the mass is large, the moment of inertia is large because the rotational moment of inertia is large, and the ratchet plate 140 itself resonates due to the vibration of the impact.
- the conventional armrest device 100 has a problem that merchantability is reduced because a loud hitting sound is generated during operation.
- the pin 180 that supports the rotation of the ratchet plate 140 is a cantilever that is fixed to the armrest body 120 by caulking, and is easily tilted. There is a problem that the rigidity is low with respect to the load in the opening and closing direction, the strength is not sufficient, and the durability is inferior.
- the conventional armrest device 100 requires not only a large ratchet plate 140 for engaging and releasing the gear plate 130, but also a bracket plate 170 for smoothly rotating the armrest body 120.
- the bracket plate 171 for smoothly rotating the ratchet plate 140 is necessary, the number of parts is large, and the thickness of the armrest body 120 needs to be increased for smooth rotation. For these reasons, it is difficult to reduce the weight and thickness.
- the present invention has been made in consideration of such conventional problems, can reduce the occurrence of hitting sound during operation, has high rigidity, and can be reduced in weight and thickness.
- An object is to provide an armrest device.
- the armrest device is an armrest device in which an armrest body attached to a seat frame so as to be rotatable forward and backward is adjustable in angle, and locking teeth are formed on the outer periphery and fixed to the seat frame.
- an armrest body attached to a seat frame so as to be rotatable forward and backward is adjustable in angle, and locking teeth are formed on the outer periphery and fixed to the seat frame.
- a cover plate attached to the armrest body and sandwiching the gear plate together with the armrest body, a locking tooth detachably engaged with the locking tooth, and the armrest body or the cover plate
- a load receiving portion that engages the locking teeth with each other by contact or direct contact is formed, and is disposed in a space between the armrest body and the cover plate so as to be positioned on the outer peripheral side of the gear plate.
- the armrest body can be moved freely in the space with the forward / reverse rotation of the armrest body.
- a stop piece, and a plate-like elastic member that is disposed in the space and is elastically pressed against the locking piece while being held by at least one of the armrest body or the cover plate, and the elastic member Applies a propulsive force in one direction to the locking piece engaged with the gear plate by the forward rotation of the armrest body, and holds the locking piece in the disengaged state from the gear plate. It is characterized by that.
- invention of Claim 2 is the armrest apparatus of Claim 1, Comprising: The said armrest main body and a cover plate consist of a plate-shaped member in which the bearing hole used as a coaxial position was formed, and the said gear plate WHEREIN: A plurality of supporting convex portions that are in contact with the inner surface of the bearing hole and support the rotation of at least one of the armrest body and the cover plate are formed at intervals.
- the invention according to claim 3 is the armrest device according to claim 1, wherein a separation portion is provided at one end portion of the locking teeth of the gear plate, while a release claw is provided at the other end portion.
- the invention according to claim 4 is the armrest device according to claim 3, wherein a fitting recess into which the elastic member is fitted is formed in the locking piece when the pressure contact force is increased from the steady state. It is characterized by.
- the invention according to claim 5 is the armrest device according to claim 1, wherein a highly rigid leaf plate is arranged between the load receiving portion of the locking piece and the cover plate.
- a sixth aspect of the invention is the armrest device according to the third aspect of the invention, wherein the locking piece is elastic so that the first pressure contact portion to which the elastic member is pressed in a steady state and the pressure contact force is increased compared to the steady state. And a second press-contact portion where the member press-contacts, wherein the first press-contact portion and the second press-contact portion are continuous.
- Invention of Claim 7 is an armrest apparatus of Claim 6, Comprising: Either the 1st press-contact part of the said locking piece or the site
- the invention according to an eighth aspect is the armrest device according to the first aspect, wherein the elastic member has a substantially U shape sandwiching the locking piece from both sides.
- the present invention it is possible to reduce the generation of a hitting sound during operation, and to provide an armrest device that has high rigidity and can be reduced in weight and thickness.
- FIG. 2 is a cross-sectional view taken along line C1-C2 in FIG.
- FIG. 3 is a sectional view taken along line C3-C4 according to FIG.
- (A), (B), (C) is a side view of the armrest body, a sectional view taken along line d3-d4, and a sectional view taken along line d1-d2.
- (A), (B), (C), (D) are a front view, a sectional view taken along line f1-f2, a sectional view taken along line f3-f4, and a sectional view taken along line f5-f6.
- (A), (B), (C), (D) are a front view, a sectional view taken along line e1-e2, a sectional view taken along line e3-e4, and a sectional view taken along line e5-e6.
- (A), (B), (C), (D) is a front view of the locking piece, a sectional view taken along the line g1-g2, a plan view, and a side view.
- (A) and (B) are the top views and front views of an elastic member.
- (A) and (B) are the front views and side views of a spacer.
- (A), (B), (C) is the front view, top view, and side view of a leaf plate. It is a perspective view which shows a use part.
- FIG. 16 is an operation diagram illustrating a state following FIG. 15.
- FIG. 17 is an operation diagram showing a locked state when the armrest body is operated in the closing direction with respect to FIG. 16.
- FIG. 16 is a front view which shows the (theta) 1 state of an armrest apparatus.
- operation figure which shows the state which rotated the armrest main body to (theta) 1 front.
- FIG. 32 is a cross-sectional view taken along line i1-i2 of FIG. 31.
- FIG. 32 is a cross-sectional view taken along line i3-i4 of FIG. 31. It is a front view which shows 4th Embodiment of this invention.
- FIG. 35 is a sectional view taken along line j1-j2 of FIG.
- FIG. 35 is a sectional view taken along line j3-j4 of FIG. It is the j1-j2 sectional view taken on the line of FIG. 34 which shows the modification of 4th Embodiment.
- FIG. 35 is a cross-sectional view taken along line j3-j4 of FIG. 34 showing a modification of the fourth embodiment.
- It is a perspective view of the vehicle seat provided with the armrest. It is a front view which shows the conventional armrest apparatus. It is the a1-a2 sectional view taken on the line of FIG.
- FIG. 41 is a sectional view taken along line a3-a4 in FIG. 40.
- FIG. 1 to 24 show an armrest device 10 according to a first embodiment of the present invention.
- the armrest device 10 of this embodiment is applied to a vehicle seat, it can be similarly applied to a furniture seat.
- the armrest device 10 includes an armrest body 20, a gear plate 30, a cover plate 40, a locking piece 50, and an elastic member 60.
- the armrest body 20 is attached to the seat frame 11 of the seat back so as to be able to rotate forward and backward by means of mounting bolts 13. That is, as shown in FIG. 12, the armrest body 20 is rotatable with respect to the seat frame 11 in both the opening direction (forward direction) indicated by arrow A and the closing direction (reverse direction) indicated by arrow B. .
- the armrest main body 20 is a member that supports the elbow of the seated occupant, and is formed by a long plate-shaped plate-like member having a bottom plate portion 24. As shown in FIG. 4, the bearing hole 21 is formed in the bottom plate portion 24 of the armrest body 20 so as to be fitted to the shaft portion 72 of the spacer 70. In addition, a leaf plate recess 22 and an elastic member recess 23 are formed in the vicinity of the bearing hole 21.
- the gear plate 30 is formed of a plate-like member formed in a substantially clover shape.
- a serrated locking tooth 31 is formed on the outer periphery of the gear plate 30, a separating portion 32 is formed at one end of the locking tooth 31, and a release claw 33 is formed at the other end.
- the isolation part 32 and the release claw 33 are formed so as to protrude outward from the locking teeth 31. In this case, the isolation part 32 is continuous with the locking tooth 31 via the slope part 37.
- a mounting hole 34 through which the mounting bolt 13 passes is formed in a substantially central portion of the gear plate 30.
- Mounting legs 35 that are bent at right angles to the plate thickness direction are formed in three directions with the mounting hole 34 as the center. As shown in FIGS. 1 to 3, the mounting legs 35 pass through the bearing holes 21 of the armrest body 20 and come into contact with the seat frame 11, and the mounting bolts 13 are screwed into the seat frame 11 in this contact state. As a result, the gear plate 30 is fixedly attached to the seat frame 11.
- a plurality of small arc-shaped support convex portions 36 are formed at four positions around the mounting hole 34 in the gear plate 30. The plurality of support protrusions 36 are located on the circumference of the same circle and protrude in the direction opposite to the mounting leg 35.
- the cover plate 40 sandwiches the gear plate 30 together with the armrest body 20.
- the cover plate 40 is formed by a dish-like plate-like member having a substantially circular top plate portion 45, and a recess corresponding to the top plate portion 45 is directed toward the armrest body 20.
- the armrest body 20 is integrated with the armrest body 20 by welding to the armrest body 20. Therefore, the cover plate 40 and the armrest body 20 rotate integrally.
- a space 14 (see FIGS. 11, 2, and 3) is formed between the top plate portion 45 and the bottom plate portion 24 of the armrest body 20.
- a locking piece 50, an elastic member 60, and a leaf plate 15 which will be described later are arranged.
- the gear plate 30 is sandwiched between the cover plate 40 and the armrest body 20 while being located in the space 14.
- the top plate 45 of the cover plate 40 is formed with a bearing hole 41 that is coaxial with the bearing hole 21 of the armrest body 20. As shown in FIG. 1, a plurality of support protrusions 36 of the gear plate 30 abut on the inner surface of the bearing hole 41. By this contact, the integral rotation of the cover plate 40 and the armrest body 20 is supported. Further, the top plate portion 45 of the cover plate 40 is formed with a load receiving portion 46 that spreads outward. A leaf plate recess 42 and an elastic member recess 43 are formed at positions close to the load receiving portion 46. The leaf plate recess 42 is fixed together with the leaf plate recess 22 of the armrest body 20 with a leaf plate 15 described later interposed therebetween.
- the elastic member recess 43 sandwiches the elastic member 60 together with the elastic member recess 23 of the armrest body 20 so as to be movable.
- the load receiving portion 46 is located on the rear side of the leaf plate 15 (see FIG. 11), and receives a load from the leaf plate 15.
- the locking piece 50 is formed in a half-moon shape as shown in FIG.
- the locking piece 50 is formed on one side of the outer periphery with a serrated locking tooth 51 that engages and engages with the locking teeth 31 of the gear plate 30.
- the locking teeth 51 of the locking piece 50 and the locking teeth 31 of the gear plate 30 are gentle in the opening direction of the armrest body 20 (see FIG. 41) and can be overcome each other. Has stood up and is unable to get over.
- the locking piece 50 is disposed in the space 14 between the armrest body 20 and the cover plate 40 so as to be positioned on the outer peripheral side of the gear plate 30.
- One side opposite to the locking teeth 51 is an arc-shaped load receiving portion 52.
- the load receiving portion 52 faces the top plate portion 45 of the cover plate 40 and contacts the cover plate 40 via the leaf plate 15 as shown in FIG. Due to this contact, the locking teeth 51 are engaged with the locking teeth 31 of the gear plate 30.
- the locking piece 50 is formed with a first press contact portion 54 and a second press contact portion 55.
- the first pressure contact portion 54 is formed by both side inclined surfaces whose thickness gradually decreases toward the tip.
- the second pressure contact portion 55 is continuous with the terminal portion of the first pressure contact portion 54, and the second pressure contact portion 55 has a predetermined thickness that is thicker than the first pressure contact portion 54.
- An elastic member 60 described later is in pressure contact with the first pressure contact portion 54 and the second pressure contact portion 55. In the regular state, the elastic member 60 is in pressure contact with the first pressure contact portion 54. Normally, the locking teeth 51 of the locking piece 50 are engaged with the locking teeth 31 of the gear plate 30.
- the elastic member 60 is in pressure contact with the second pressure contact portion 55, the pressure contact force of the elastic member 60 to the locking piece 50 is greater than the pressure contact force in the steady state.
- a fitting recess 56 is formed in the locking piece 50.
- the fitting recess 56 is formed by partially denting the second pressure contact portion 55, and the elastic member 60 is fitted when the elastic member 60 presses the second pressure contact portion 55. By this fitting, the elastic member 60 can reliably hold the locking piece 50.
- the elastic member 60 is formed by a leaf spring member obtained by bending a thin plate into a substantially U shape.
- the elastic member 60 has a base portion 61, side plate portions 62 are continuous from both sides of the base portion 61, a curved portion is continued at the distal end of the side plate portion 62, and an end portion of the curved portion 63 is a distal end portion 64.
- the distal end portion 64 is in an open state, and the locking piece 50 can be inserted from the distal end portion 64.
- the side plate portions 62 on both sides are inclined so as to gradually approach each other toward the distal end side, whereby a spring force that presses the locking piece 50 is applied to the elastic member 60.
- the bending portion 63 is a part for ensuring slippage of the locking piece 50 with the first pressure contact portion 54.
- the elastic member 60 is disposed in the space 14 formed by the armrest body 20 and the cover plate 40 while being supported by the elastic member recesses 23 and 43 of the armrest body 20 and the cover plate 40. At this time, in the elastic member 60, the first pressure contact portion 54 of the locking piece 50 is inserted from the distal end portion 64, and the distal end portion 64 and the bending portion 63 are held with the first pressure contact portion 54 of the locking piece 50 interposed therebetween. It becomes.
- a spacer 70 is incorporated.
- the spacer 70 is formed of a plate-like member, and a bearing hole 71 that is coaxial with the bearing hole 21 of the armrest body 20 is formed in the center portion.
- a shaft portion 72 is formed, and a leg portion housing recess 73 is formed between the shaft portions 72.
- the spacer 70 is disposed so as to be sandwiched between the seat frame 11 and the gear plate 30.
- the bearing hole 71 is coaxial with the bearing holes 21 and 41 of the armrest body 20 and the cover plate 40.
- the mounting leg 35 of the gear plate 30 enters the leg housing recess 73.
- the spacer 70 can be omitted if it is not necessary.
- FIG. 10 shows the leaf plate 15.
- the leaf plate 15 is made of a plate member formed in an arc shape, and is disposed between the load receiving portion 46 of the cover plate 40 and the load receiving portion 52 of the locking piece 50, and is in a state of being sandwiched between them. Take the load.
- a leaf plate having rigidity and wear resistance that is less likely to be bent by quenching a metal plate is used as the leaf plate 15.
- the gear plate 30 and the spacer 70 are fixed to the seat frame 11 by the mounting bolts 13.
- the armrest body 20, the cover plate 40, the locking piece 50, the elastic member 60, and the leaf plate 15 can be integrally rotated with respect to the fixed-side gear plate 30.
- the locking piece 50 is disposed in the space 14 surrounded by the gear plate 30, the armrest body 20, the cover plate 40, the leaf plate 15, and the elastic member 60, and is allowed to move freely in the space ( FIG. 11).
- FIGS. 12 shows a state where the armrest body 20 is in a horizontal position
- FIG. 18 shows a state where the armrest body 20 is tilted to ⁇ 1
- FIG. 22 shows a state where the armrest body 20 is stored.
- the arrows A and B and the positions ⁇ 0, ⁇ 1, and ⁇ 2 in FIG. 12 are aligned with FIG. 26, arrow A is the opening direction (forward direction) of the armrest body 20, and arrow B is the closing direction (reverse direction).
- FIG. 13 shows a state in which the armrest body 20 is ⁇ 0
- FIG. 14 shows a state in which the armrest body 20 is rotated by 4 ° in the opening direction from the state in FIG.
- the locking piece 50 that rotates in synchronization with 60 and is held by the elastic member 60 is propelled along the outer periphery of the locking tooth 31 of the gear plate 30 together with the propulsive force applied by the elastic member 60.
- FIG. 15 shows a state where the armrest body 20 is further rotated to 8 °. Since the locking piece 50 further promotes, the locking piece 50 is about to get over the locking tooth 31 of the engaged gear plate 30, and as shown in FIG. It meshes with the next locking tooth 31 of the gear plate 30.
- the locking piece 50 is pushed in by a normal pressure contact force in which the curved portion 63 of the elastic member 60 presses the first pressure contact portion 54 of the locking piece 50.
- a frictional resistance is generated between the curved portion 63 and the first pressure contact portion 54. Since the force pushing the locking piece 50 is consumed by this frictional resistance, the moving speed when the locking piece 50 gets over the locking teeth 31 of the gear plate 30 is reduced. For this reason, the moment when the locking teeth 51 of the locking piece 50 are engaged with the locking teeth 31 of the gear plate 30 is weakened, and the hitting sound can be reduced.
- the locking piece 50 is in an idle state in a space (space 14) surrounded by the gear plate 30, the armrest body 20, the cover plate 40, the leaf plate 15, and the elastic member 60.
- the hitting sound generated when 50 is engaged with the gear plate 30 is difficult to propagate to the armrest body 20 and the cover plate 40. As described above, a great impact sound reduction effect can be exhibited.
- FIG. 17 shows the locked state by rotating the armrest body 20 in the closing direction between ⁇ 0 and ⁇ 1.
- the locking teeth 51 of the locking piece 50 and the locking teeth 31 of the gear plate 30 are in a state in which they cannot be overcome because they are standing in the closing direction (B direction).
- the leaf plate 15 is firmly engaged by a wedge effect by the load receiving portions 52 and 46. Thereby, rotation to the closing direction (B direction) of the armrest main body 20 is locked.
- FIG. 18 shows a state in which the armrest body 20 has reached ⁇ 1 due to the rotation of the armrest body 20 in the opening direction.
- the armrest body 20 is further opened and rotated toward ⁇ 2.
- the locking piece 50 moves in the diameter increasing direction of the gear plate 30 along the inclined surface portion 37 of the gear plate 30.
- the space formed by the inclined surface portion 37, the leaf plate 15, and the elastic member 60 is narrowed by the movement of the locking piece 50, the locking piece 50 has no place to go, and the locking piece 50 penetrates deeply into the elastic member 60.
- the locking teeth 51 ride on the isolation part 32 of the gear plate 30.
- the locking piece 50 is held by the elastic member 60 by being held by the elastic member 60 (see FIG. 22).
- the curved portion 60 of the elastic member 60 is in pressure contact with the second pressure contact portion 55, and the pressure contact force on the locking piece 50 of the elastic member 60 is greater than in the normal state due to the pressure contact with the second pressure contact portion 55.
- the curved portion 63 of the elastic member 60 enters the fitting recess 56 of the locking piece 50, the locking piece 50 is securely held.
- the locking teeth 51 and 31 are in the disengaged state, so that the armrest body 20 can be freely rotated in either the forward or reverse direction.
- FIG. 19 to 21 show the operation of the locking piece 50 and the elastic member 60 when the armrest body 20 is rotated in the opening direction from just before ⁇ 1 to ⁇ 2.
- FIG. 19 shows a state in which the armrest body 20 is rotated to a position close to ⁇ 1, and the locking piece 50 moves to the terminal portion of the gear plate 30 along the inclined surface portion 37 of the gear plate 30.
- FIG. 20 shows a state where the armrest body 20 is further rotated from the state of FIG. 19 to reach ⁇ 1.
- the locking piece 50 is connected to the end of the slope portion 37 of the gear plate 30 and rides on the separating portion 32, and the curved portion 63 of the elastic member 60 enters the fitting recess 56 of the locking piece 50. Is held by the elastic member 60.
- FIG. 21 shows a state in which the armrest main body 20 is further rotated to ⁇ 2, and the armrest main body 20 reaches ⁇ 2 and enters the retracted state shown in FIG.
- the locking piece 50 contacts the release claw 33 of the gear plate 30 and moves in the direction away from the elastic member 60.
- the curved portion 63 of the elastic member 60 is disengaged from the fitting recess 56 and returns to the normal state where the first pressure contact portion 54 is pressed.
- the locking piece 50 is sandwiched between the gear plate 30 and the leaf plate 15, and the load receiving portion 52 indirectly contacts the load receiving portion 46 of the cover plate 40 via the leaf plate 15.
- the engaging tooth 51 of the engaging piece 50 and the engaging tooth 31 of the gear plate 30 are engaged with each other, and the initial state is restored.
- the ratchet plate 140 rotates, and the locking teeth 131 of the gear plate 130 move to the ratchet plate.
- the curved portion 63 of the elastic member 60 is moved from the fitting concave portion 56 of the locking piece 50 to the second press-contact portion 55 because the hitting force hits the locking teeth 141 of 140.
- the elastic member 60 pushes the locking piece 50 with the movement of the locking tooth 51 with respect to the locking tooth 31, but the curved portion 63 of the elastic member 60 is the first pressure contact portion of the locking piece 50. Because of being in pressure contact with 54, a frictional resistance is generated between the elastic member 60 and the locking piece 50, and the force for pushing the locking piece 50 is consumed by the frictional resistance. For this reason, the moving speed when the locking piece 50 gets over the locking teeth 31 of the gear plate 30 is reduced, and the momentum when the locking teeth 51 of the locking piece 50 bites into the locking teeth 31 of the gear plate 30. Since the sound becomes weak, the hitting sound can be reduced. Further, since the locking piece 50 is in a floating state in the space 14, the hitting sound generated when the locking piece 50 bites into the gear plate 30 is difficult to propagate to the armrest body 20 and the cover plate 40, and this also The hitting sound can be reduced.
- the elastic member 60 acts on the locking piece 50 only by being held in the space 14 between the armrest body 20 and the cover plate 40. For this reason, it is not necessary to crimp or join the elastic member 60, it can be set as a simple structure, and an assembly becomes easy.
- both the armrest body 20 and the cover plate 40 both of which are plate-like members, have a structure in which the gear plate 30 on the fixed side is sandwiched, and the support convex portion 36 of the gear plate 30 has the bearing hole 21 and the cover of the armrest body 20. Since the structure is supported by abutting against the inner surface of the bearing hole 41 of the plate 40, the rigidity is large with respect to the load in the opening / closing direction (A direction and B direction) and the load in the lateral direction (C direction in FIG. 41). have. In addition, since a shaft-like member and a bracket plate for supporting the rotation of the armrest body 20 are not required, the number of parts is small, and the weight and thickness can be reduced.
- FIG. 23 shows the relationship between the locking piece 50 and the elastic member 60 in this embodiment.
- the elastic member 60 is made of a substantially U-shaped leaf spring member, and the distal end portion 64 and the curved portion 63 sandwich the inclined first pressure contact portion 54 of the locking piece 50.
- a propulsive force acts on the locking piece 50.
- the locking piece 50 moves so as to jump out from the elastic member 60. This is the same operation as when the peas pods are picked up with the fingertips and the beans are popped out.
- the movement of the locking piece 50 is pushed so that the locking piece 50 is sandwiched between the gear plate 30 and the cover plate 40 as described above.
- the friction coefficient ⁇ between the first pressure contact portion 54 of the locking piece 50 and the curved portion 63 of the elastic member 60 is about 0.12 to 0.15
- ⁇ is the friction angle
- FIG. 23 shows the angle 2 ⁇ formed by the first pressure contact portions 54 on the two surfaces and the load P of the curved portion 63 of the elastic member 60 sandwiching the first pressure contact portions 54 (P is the direction in which the elastic member 63 is perpendicular to the center line).
- P is the direction in which the elastic member 63 is perpendicular to the center line.
- the relationship between the load) and the thrust F propelled by the locking piece 50 is shown.
- P, ⁇ , ⁇ , and F the wedge relationship shown in Equation 1 is established.
- the propulsive force F indicates a load in the propelling direction (direction F in FIG. 23) that acts on the locking piece 50 when the load P of the elastic member 60 acts on the first pressure contact portion 54.
- N is a normal force acting on the first pressure contact portion 54, and the relationship of Expression 2 is established.
- Equation 1 (1) When the propulsive force F is positive (0 ⁇ ), the frictional force between the elastic member 60 and the locking piece 50 is superior to the force that pushes the locking piece 50 by the load P of the elastic member 60. Specifically, the slope angle ⁇ of the first pressure contact portion 54 is smaller than the friction angle ⁇ , and even when the elastic member 60 sandwiches the first pressure contact portion 54, the locking piece is held without moving. Become. (2) When the propulsive force F is 0, the force that pushes the locking piece 50 by the load P of the elastic member 60 and the frictional force between the elastic member 60 and the locking piece 50 are balanced. Even if the elastic member 60 sandwiches the first pressure contact portion 54, the locking piece is held without moving.
- the vertical axis F / P in the characteristic diagram of FIG. 24 is a value obtained by dividing the thrust F of Equation 1 by the spring force P, and indicates how much the spring force P is converted into the thrust F.
- FIG. 24 shows that the angle 2 ⁇ at which the sound reduction effect and the reliable propulsion of the locking piece 50 can be obtained is around 14 ° to 48 °, and particularly around 30 ° is most stable. .
- the effective length of the first pressure contact portion 54 is shortened, and the curved portion 63 of the elastic member is fitted into the second pressure contact portion 55 before the locking teeth exceed one mountain. Since no propulsive force is generated, a situation in which engagement of the locking teeth is not reliably performed is likely to occur.
- the value of the friction coefficient ⁇ (tan ⁇ ) varies depending on the material, surface roughness, lubricant, etc. of the elastic member 60 and the locking piece 50.
- the appropriate angle 2 ⁇ of the first pressure contact portion in an appropriate combination can be expressed as Formula 3 obtained by generalizing Formula 1 and Formula 2.
- FIGS. 25 to 28 show deformation forms of the locking piece 50 and the elastic member 60, respectively.
- the first pressure contact portion 54 of the locking piece 50 has an inclined surface and the other is a flat surface.
- the two first pressure contact portions 54 have a spherical shape.
- the elastic member 60 is substantially L-shaped, and only one curved portion 63 is in pressure contact with the first pressure contact portion 54 of the locking piece 50.
- the curved portion 63 is not formed on the elastic member 60, and the portion corresponding to the curved portion 63 is a linear inclined surface portion 66, while the first pressure contact portion 54 of the locking piece 50 is used.
- the structure is a spherical surface.
- the elastic member 60 and the locking piece 50 can be designed such that the elastic member 60 pushes the first pressure contact portion 54 of the locking piece 50 to propel the locking piece 50. It is.
- FIG. 29 shows a fifth modification of the locking piece 50.
- the locking piece 50 in FIG. 29 includes a main body portion 57 formed of a metal such as steel and a cover portion 58 formed of resin.
- the main body 57 is formed with a second pressure contact portion 55 having a locking tooth 51, a load receiving portion 52, and a fitting recess 56.
- the cover part 58 is put on the main body part 57 and integrated with the main body part 57 by heat welding or the like.
- the cover portion 58 forms the first pressure contact portion 54, and in this case as well, the elastic member 60 can be pressure contacted to the first pressure contact portion 54 (cover portion 58).
- FIG. 30 shows an armrest device 10A according to a second embodiment of the present invention.
- the first pressure contact portion 54A of the locking piece 50A has a shape that gradually increases in thickness along the direction of rotation of the armrest body 20 in the opening direction (A direction).
- Other members are the same as those in the first embodiment.
- the curved portion 63 of the elastic member 60 can operate in the same manner as in the first embodiment by being in pressure contact with the first pressure contact portion 54A.
- the spacer 70 ⁇ / b> A enters and fits into the bearing hole 21 of the armrest body 20. Thereby, rotation of the armrest main body 20 is supported by the spacer 70A.
- the attachment leg portion 75A extends in a direction orthogonal to the plate thickness direction of the spacer 70A, and the front end portion thereof is in contact with the seat frame 11. Thereby, it is not necessary to form the attachment leg part 35 with respect to the gear plate 30.
- a recessed portion 25 that is partially recessed is formed in the bottom plate portion 24 of the armrest body 20.
- the recess 25 is formed corresponding to the top plate portion 45 of the cover plate 40.
- a storage chamber for storing the locking piece 50, the elastic member 60, the gear plate 30, and the leaf plate 15 can be formed, and these can be easily and reliably arranged in the space 14. can do.
- the recess may be provided in the cover plate 40 or may be provided in both the cover plate 40 and the armrest body 20.
- the cover plate 40 is disposed on the seat frame 11 side. Therefore, the bottom plate portion 24 of the seat frame 11 is bent so as to cover the gear plate 30 and the like.
- the present invention is not limited to the above embodiment, and various modifications can be made.
- the leaf plate 15 between the locking piece 50 and the cover plate 40 may be omitted, and the load receiving portion 46 of the cover plate 40 may be brought into direct contact with the load receiving portion 52 of the locking piece 50.
- FIG. Furthermore, it is good also as a structure which contact
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- Aviation & Aerospace Engineering (AREA)
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- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Nは第1圧接部54に作用する垂直抗力であり、式2の関係が成り立つ。
(1)推進力Fが正(0<)の場合
弾性部材60の荷重Pによって係止駒50を押し出す力よりも弾性部材60と係止駒50との間の摩擦力が勝る状態となる。
具体的には、第1圧接部54の斜面角度αが摩擦角度ρよりも小さい場合であり、弾性部材60が第1圧接部54を挟み込んでも、係止駒は動かずに保持された状態となる。
(2)推進力Fが0の場合
弾性部材60の荷重Pによって係止駒50を押し出す力と弾性部材60と係止駒50との間の摩擦力とが均衡した状態となる。
弾性部材60が第1圧接部54を挟み込んでも、係止駒は動かずに保持された状態となる。
(3)推進力Fが負(0>)の場合
弾性部材60の荷重Pによって係止駒50を押し出す力が弾性部材60と係止駒50との間の摩擦力を勝る状態となる。
具体的には、第1圧接部54の斜面角度αが摩擦角度ρよりも大きい場合であり、弾性部材60が第1圧接部54を挟み込むと係止駒は図23のFの方向に押し出される。
また、2αが大きくなる(90°以上)と第1圧接部54の有効長さが短くなり、係止歯が1山乗越える前に弾性部材の湾曲部63が第2圧接部55に嵌り込み、推進力が発生しなくなることから、係止歯の係合が確実に行われない状況が発生しやすい。
=2cosα(sin(ρ-α)/cosρ)
ここで前記-0.5<F/P<0となる最適条件から
-0.5<2cosα(sin(ρ-α)/cosρ)<0・・・・・・式3
11 シートフレーム
14 空間
15 リーフプレート
20 アームレスト本体
30 ギアプレート
31 係止歯
32 隔離部
33 解除爪
36 支持凸部
70、70A スペーサ
40 カバープレート
46 荷重受け部
50 係止駒
51 係止歯
52 荷重受け部
54 第1圧接部
55 第2圧接部
56 嵌合凹部
60 弾性部材
63 湾曲部
64 先端部
Claims (8)
- シートフレームに正逆回転可能に取り付けられたアームレスト本体が角度調整可能となっているアームレスト装置において、
外周に係止歯が形成され前記シートフレームに固定されたギアプレートと、
前記アームレスト本体に取り付けられ前記ギアプレートをアームレスト本体と共に挟むカバープレートと、
前記係止歯に係脱自在に係合する係止歯及び前記アームレスト本体又はカバープレートの少なくとも一方に間接的又は直接に当接することにより前記係止歯を相互に係合させる荷重受け部が形成され、前記ギアプレートの外周側に位置するように前記アームレスト本体とカバープレートとの間の空間に配置され、前記アームレスト本体の正逆回転に伴って前記空間内で遊動可能となっている係止駒と、
前記アームレスト本体又はカバープレートの少なくともいずれか一方に保持された状態で前記空間内に配置されて前記係止駒に弾性的に圧接する板状の弾性部材とを備え、
前記弾性部材は、前記アームレスト本体の正回転により前記ギアプレートとの係合状態の係止駒に対して一方向への推進力を付与し、前記ギアプレートとの係合離脱状態の係止駒を保持することを特徴とするアームレスト装置。 - 前記アームレスト本体及びカバープレートは、同軸位置となる軸受孔が形成された板状部材からなり、前記ギアプレートには、前記軸受孔の内面に当接してアームレスト本体又はカバープレートの少なくとも一方の回転を支持する支持凸部が間隔を有して複数形成されていることを特徴とする請求項1記載のアームレスト装置。
- 前記ギアプレートの係止歯の一側の終端部に隔離部が設けられる一方、他側の終端部に解除爪が設けられており、前記係止駒が前記隔離部に達したとき前記弾性部材による係止駒への圧接力が定常時よりも増大し、前記係止駒が前記解除爪に達したとき前記弾性部材による係止駒への圧接力が定常時に戻ることを特徴とする請求項1記載のアームレスト装置。
- 前記圧接力が定常時よりも増大したときに前記弾性部材が嵌合する嵌合凹部を前記係止駒に形成したことを特徴とする請求項3記載のアームレスト装置。
- 前記係止駒の荷重受け部と前記カバープレートとの間に高剛性のリーフプレートが配置されていることを特徴とする請求項1記載のアームレスト装置。
- 前記係止駒は、定常時に弾性部材が圧接する第1圧接部と、定常時よりも圧接力が増大するように弾性部材が圧接する第2圧接部とを備え、前記第1圧接部と第2圧接部とが連続していることを特徴とする請求項3記載のアームレスト装置。
- 前記係止駒の第1圧接部又は前記弾性部材が第1圧接部を圧接する部位のいずれか一方が弾性部材の圧接力を増減させる方向に傾斜していることを特徴とする請求項6記載のアームレスト装置。
- 前記弾性部材は、前記係止駒を両側から挟み込む略U字形状となっていることを特徴とする請求項1記載のアームレスト装置。
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CN201180010267.3A CN102762132B (zh) | 2010-02-23 | 2011-02-21 | 扶手装置 |
JP2012501774A JP5688072B2 (ja) | 2010-02-23 | 2011-02-21 | アームレスト装置 |
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CN (1) | CN102762132B (ja) |
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Cited By (2)
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JP5567750B1 (ja) * | 2014-01-10 | 2014-08-06 | 備前発条株式会社 | アームレスト角度調節機構 |
WO2023007542A1 (ja) * | 2021-07-26 | 2023-02-02 | 備前発条株式会社 | アームレスト |
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CN106696786B (zh) * | 2015-07-30 | 2018-12-11 | 长城汽车股份有限公司 | 一种座椅扶手和汽车座椅 |
CN110254311A (zh) * | 2019-06-25 | 2019-09-20 | 上海国琻汽车科技有限公司 | 角度调节机构及包含其的汽车座椅扶手 |
Citations (2)
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JPS6111360U (ja) * | 1984-06-26 | 1986-01-23 | トヨタ車体株式会社 | シ−トの可動ア−ムレストのロツク装置 |
JP2005065786A (ja) * | 2003-08-20 | 2005-03-17 | Otics Corp | アームレスト装置 |
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JP4120542B2 (ja) * | 2003-09-10 | 2008-07-16 | アイシン精機株式会社 | 角度位置調整機構 |
JP4360674B2 (ja) * | 2003-11-28 | 2009-11-11 | 備前発条株式会社 | アームレスト装置 |
CN201384264Y (zh) * | 2009-03-25 | 2010-01-20 | 东莞豪文塑胶五金制品有限公司 | 座椅扶手前后调节装置和上下调节装置 |
-
2011
- 2011-02-21 CN CN201180010267.3A patent/CN102762132B/zh not_active Expired - Fee Related
- 2011-02-21 JP JP2012501774A patent/JP5688072B2/ja active Active
- 2011-02-21 WO PCT/JP2011/053751 patent/WO2011105341A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6111360U (ja) * | 1984-06-26 | 1986-01-23 | トヨタ車体株式会社 | シ−トの可動ア−ムレストのロツク装置 |
JP2005065786A (ja) * | 2003-08-20 | 2005-03-17 | Otics Corp | アームレスト装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5567750B1 (ja) * | 2014-01-10 | 2014-08-06 | 備前発条株式会社 | アームレスト角度調節機構 |
WO2023007542A1 (ja) * | 2021-07-26 | 2023-02-02 | 備前発条株式会社 | アームレスト |
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JP5688072B2 (ja) | 2015-03-25 |
CN102762132A (zh) | 2012-10-31 |
JPWO2011105341A1 (ja) | 2013-06-20 |
CN102762132B (zh) | 2016-06-08 |
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