JP3520808B2 - Reclining device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reclining device, and more specifically, a base member fixed to the seat cushion side of a vehicle seat, and a rotatably supported base member and fixed to a seat back. A rotating arm, a lock mechanism that locks the rotation of the rotating arm, an operation lever that unlocks the lock mechanism, and a return spring that biases the seat back in the forward tilt direction. The present invention relates to a reclining device in which a ring member for locking the outer peripheral edge of a rotating arm is provided on the outer peripheral edge of the base member.

[0002]

2. Description of the Related Art Conventionally, a structure in which a seat cushion is moved back and forth by a back and forth slide mechanism is known, and a reclining device for tilting a seat back forward and backward is also known. There are various reclining devices such as those described in Japanese Patent Application Laid-Open No. 9-28496, Japanese Patent Application Laid-Open No. 9-131237, and Japanese Patent Application Laid-Open No. 11-56513, which the applicant has previously proposed.

As shown in FIG. 7, the conventional Japanese Patent Laid-Open Publication No. 11-56513 includes a front and rear slide mechanism 1 provided with a fixed rail 2 and a movable rail 3, and a seat cushion is attached to the movable rail 3 side. A base member 11 fixed to the movable rail 3 side, a rotation arm 12 rotatably supported by the base member 11 and fixed to a seat back, and an interposition between the base member 11 and the rotation arm 12. Reclining device 10 including a locked mechanism
The configuration of is shown.

In the front-rear slide mechanism 1, the lock mechanism (not shown) of the front-rear slide mechanism 1 is operated by operating the operation lever 6. Further, the reclining device 10 includes an operation lever 15 for unlocking a lock mechanism interposed between the base member 11 and the rotating arm 12, a lock spring 35 for urging the operation lever 15 in the lock direction, and a seat back. It has a return spring (not shown) for tilting.

The rotating arm 12 is rotatably held with respect to the base member 11 about a pivot 14 fixed to an operating lever 15 and attached to a protruding portion 7 of a vertical plate portion 5 of the movable rail 3. An insertion hole 17 for inserting the pivot 14 is formed in the center of the base member 11, and a circular recess 18 is formed.
Locking teeth that mesh with the outer teeth 23 of the inner teeth 22A and 22B are formed on the arcuate side wall of the.

Further, a pair of inner teeth 22A, 2 is formed in a vertically elongated recess 20 formed inside the circular recess 18.
2B is arranged so that it can move back and forth. A cam surface 24 is formed on the inner peripheral side of these inner teeth 22A, 22B. Further, between the inner teeth 22A and 22B of the recess 20, a cam 26 which is fitted to the pivot 14 and rotated is disposed.

The base member 11 and the rotating arm 12 are formed in a substantially circular shape, a ring member 33 is fixed to the outer peripheral edge of the base member 11, and the outer peripheral edge of the rotating arm 12 is covered with the ring member 33. The base member 11 and the rotating arm 12 are configured so as not to open.

[0008]

However, if the ring member 33 is fixed to the outer peripheral edge of the base member 11 by caulking when the base member 11 and the rotating arm 12 are formed in a substantially circular shape, the ring member 33 is fixed. The rotation of the ring member 33 may cause abnormal noise, or dust may enter. Further, when the rotation range of the rotation arm 12 is restricted, a stopper member must be separately provided on the side of the base member 11 of the reclining device 10, which has a drawback that the assembling work becomes complicated.

The object of the present invention has been made by paying attention to the unsolved problem of the above-mentioned conventional example, and when the base member and the rotating arm are formed in a substantially circular shape, the base member and the rotating arm are rotated. The arm can be reliably prevented from opening, the rotation of the ring member can be prevented, the rotation range of the rotation arm can be restricted with a simple structure, and the reclining device can be assembled easily and quickly. It provides a reclining device that is highly economical.

[0010]

In order to achieve the above object, a reclining device according to a first aspect of the present invention is a reclining device fixed to a seat cushion side of a vehicle seat, and rotatably supported by the base member. And a locking arm that is fixed to the seat back, a lock mechanism that locks the rotation of the rotating arm, an operation lever that unlocks the lock mechanism, and a seat back biasing force. In a reclining device having a return spring and a ring member for locking the outer peripheral edge of a rotating arm on the outer peripheral edge of the base member, the base member and the rotating arm are formed in a circular shape, A lock mechanism is arranged at a position where the member and the rotating arm face each other,
A pair of bosses for rotation prevention are formed on the base member,
A crimp portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation is provided on one side of the outer peripheral edge of the ring member, and the flange portion for preventing rotation of the ring member is the base. It is inserted and locked between a pair of bosses of the member, and the caulking portion is caulked to the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm.

According to the first aspect of the present invention, the base member and the rotating arm are formed in a circular shape, and the lock mechanism is arranged at a position where the base member and the rotating arm face each other, and the locking mechanism is provided around the base member. A pair of bosses for stopping is formed, a caulking portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation is provided on one side of the outer peripheral edge of the ring member. A rotation preventing flange portion is inserted and locked between a pair of bosses of the base member, and the caulking portion is caulked to the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm. Therefore, it is possible to surely prevent the base member and the rotating arm from opening, and it is possible to prevent the ring member from rotating.
The reclining device can be assembled easily and quickly.

A reclining device according to a second aspect of the present invention includes a base member fixed to a seat cushion side of a vehicle seat, and a rotating arm rotatably supported by the base member and fixed to a seat back. A lock mechanism that locks the rotation of the rotation arm, an operation lever that unlocks the lock mechanism, and a return spring that biases the seat back in the forward tilt direction. In a reclining device in which a ring member for locking the outer peripheral edge of a rotating arm is provided on a peripheral edge, the base member and the rotating arm are formed in a circular shape, and the base member and the rotating arm are provided at positions facing each other. A lock mechanism is provided, a pair of bosses for preventing rotation is formed on the base member, and a caulking portion is formed along the outer peripheral edge of the ring member. At the same time, a flange portion for preventing rotation and a flange portion for regulating the operating angle of the rotating arm are provided on one side of the outer peripheral edge of the ring member, and a boss projecting portion for regulating the operating angle is formed on the rotating arm. A rotation preventing flange portion of the ring member is inserted and locked between a pair of bosses of the base member, and a boss extending portion for controlling an operating angle of the rotating arm has a flange for controlling an operating angle of the ring member. The rotation range of the rotating arm is regulated by being locked to the portion, and the caulking portion is caulked to the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm. It is characterized by

According to the second aspect of the present invention, the base member and the rotating arm are formed in a circular shape, and the locking mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed, and a caulking portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation and actuation of the rotating arm are provided on one side of the outer peripheral edge of the ring member. A flange portion for angle regulation, a boss extension portion for operating angle regulation is formed on the rotating arm, and a flange portion for preventing rotation of the ring member is inserted between the pair of bosses of the base member. The rotation range of the rotating arm is regulated by being locked, and the boss projecting portion for regulating the operating angle of the rotating arm being locked by the flange portion for regulating the operating angle of the ring member, The caulking part Since the outer peripheral edge of the base member is crimped so as to lock the outer peripheral edge of the rotating arm, it is possible to reliably prevent the base member and the rotating arm from opening and prevent the ring member from rotating. The rotation range of the rotation arm can be restricted with a simple structure.

A reclining device according to a third aspect of the present invention includes a base member fixed to a seat cushion side of a vehicle seat, and a rotating arm rotatably supported by the base member and fixed to a seat back. A lock mechanism that locks the rotation of the rotation arm, an operation lever that unlocks the lock mechanism, and a return spring that biases the seat back in the forward tilt direction. In a reclining device in which a ring member that locks an outer peripheral edge of a rotating arm is provided at a peripheral edge, the base member and the rotating arm are formed in a circular shape, and the base member and the rotating arm are provided at positions facing each other. A locking mechanism is provided, a pair of bosses for preventing rotation is formed on the outside of the base member, and a caulking portion is formed along the outer peripheral edge of the ring member. In addition, a flange portion for preventing rotation is provided on one side of the outer peripheral edge of the ring member, and a flange portion for restricting an operating angle of the rotating arm is provided on the other side, and an operating angle restricting portion is provided outside the rotating arm. A boss extending portion is formed, and a rotation-preventing flange portion on one side of the ring member is inserted and locked between a pair of bosses on the outer side of the base member to regulate an operating angle on the outer side of the rotating arm. The rotation range of the rotating arm is regulated by locking the boss of the rotary member to the flange portion for controlling the operating angle on the other side of the ring member, and the caulking portion is the outer peripheral edge of the rotating arm. The outer peripheral edge of the base member is crimped so as to lock.

According to the third aspect of the present invention, the base member and the rotating arm are formed in a circular shape, and the lock mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed on the outside, and a crimp portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation is provided on one side of the outer peripheral edge of the ring member and on the other side. Each of the rotary arms is provided with a flange for restricting an operating angle, a boss projecting portion for restricting an operating angle is formed on the outside of the rotary arm, and a flange portion for preventing rotation of one side of the ring member is provided. It is inserted and locked between a pair of bosses on the outer side of the base member, and the boss extension part for controlling the operating angle on the outer side of the rotating arm is locked on the flange part for controlling the operating angle on the other side of the ring member. By rotating the rotating arm Since the range is regulated and the caulking portion is caulked on the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm, the base member and the rotating arm are surely opened. Can be prevented,
The rotation of the ring member can be prevented, and the rotation range of the rotation arm can be restricted with a simple configuration.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A reclining device according to the present invention will be described below with reference to the drawings. 1 to 6 (a)
1 and 2 show an embodiment of a reclining device according to the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view of a reclining device from a rotating arm side, and FIG. 3 is a reclining device. FIG. 4 is a perspective view from the base member side.
6A and 6B are sectional views of the reclining device in an assembled state, FIG. 5 shows a rotating state of the reclining device, respectively, FIG. 5A is a front view of the last tilted state, FIG. 2A and 2B respectively show the reclining device, FIG. 1A is a front view of a locked state, and FIG. 2B is a front view of an unlocked state. The same reference numerals are given to the portions corresponding to the configuration shown in the above-mentioned conventional technique. A description will be given.

Although not shown, the vehicle seat is mounted on the front-rear slide mechanism so that the front-rear movement can be adjusted.
The front-rear slide mechanism includes a fixed rail and a movable rail that fits on the fixed rail and can slide forward and backward, and the movable rail includes a vertical plate portion. The basic structure of the front-rear slide mechanism has a conventionally known structure.

The reclining device 10 is provided on a rear portion of the vertical plate portion of the movable rail in a projecting portion projecting obliquely rearward. This reclining device 10 is, as shown in FIG.
A substantially circular base member 11 attached to the protruding portion and a circular rotation arm 12 attached to the left and right side frames of the seatback frame are provided.

A lock mechanism is provided at a position where the base member 11 and the rotary arm 12 face each other. As shown in FIG. 4, the rotating arm 12 is centered on a pivot 14 fixed to an operating lever 15, and a base member 11 is provided.
The base member 11 is rotatably held with respect to the base member 11, and an insertion hole 17 for inserting the pivot shaft 14 is formed in a central portion of the base member 11. An inner tooth 22A,
A locking tooth portion 21a that meshes with the outer tooth 23 of 22B is formed.

Further, a pair of inner teeth 22A is provided in a vertically elongated recess 20 formed inside the circular recess 18.
22B is arranged so that it can move back and forth. A cam surface 24 is formed on the inner peripheral side of these inner teeth 22A, 22B. Further, the inner teeth 22A, 22B of the recess 20
A cam 26 which is fitted to the cam shaft 14a of the pivot shaft 14 and is rotated is disposed between them, which is similar to the above-described conventional technique.

The reclining device 10 has an operating lever 15 for releasing the lock mechanism, a lock spring for urging the operating lever 15 in the locking direction, and a return spring for inclining the seat back forward. The description is omitted. A ring member 33 is fixed to the circular outer peripheral edges of the base member 11 and the rotating arm 12, and the outer peripheral edge of the rotating arm 12 is covered with the ring member 33, so that the base member 11 and the rotating arm 12 do not open. Is configured.

A plurality of engaging protrusions 28 are formed along the outer peripheral edge of the rotating arm 12, and the engaging protrusions 28 are inserted into through holes as recesses formed in the lower portions of the left and right side frames. Is fixed. A cylindrical recess 29 having the same radius as the radius of the arcuate side wall of the recess 20 of the base member 11 is formed in the rotating arm 12, and the insertion hole through which the above-mentioned pivot 14 is inserted in the center of the cylindrical recess 29. 30 is formed, and inner teeth 31a that mesh with the outer teeth 23 of the inner teeth 22A, 22B described above are formed on the inner wall forming the cylindrical recess 29.

Then, the base member 11 and the rotating arm 1
As shown in FIG. 4, a pivot shaft 14 is fitted into the shaft 2, and the pivot shaft 14 is inserted into the insertion hole 17 of the base member 11, the insertion hole 26 a of the cam 26, the insertion hole 30 of the rotating arm 12, and the operation lever 15. The snap ring 32 is fixed in a state where the snap ring 32 is inserted into each of the fitting portions 15a.

As shown in FIG. 3, a pair of bosses 41, 41 for preventing rotation are formed on the outside of the base member 11, and a caulking portion 43 is formed along the outer peripheral edge of the ring member 33. A flange portion 45 for preventing rotation is formed on one side of the outer peripheral edge of the ring member 33. The caulking portion 43 is caulked on the outer peripheral edge of the base member 11 so as to lock the outer peripheral edge of the rotating arm 12, and the base member 1
1 and the rotary arm 12 are prevented from opening. In addition, a flange portion 45 for preventing rotation on one side of the ring member 33.
Is inserted and locked between the pair of bosses 41, 41 on the outer side of the base member 11 to prevent the ring member 33 from rotating.

Further, as shown in FIG. 2, the ring member 3
Flange portions 47 and 49 for restricting the operating angle of the rotating arm 12 are provided on the other side of the rotary arm 12, and a boss 51 for restricting the operating angle is formed outside the rotating arm 12. As shown in FIGS. 5 (a) and 5 (b), the boss extending portion 51 for restricting the operating angle on the outside of the rotating arm 12 has the ring member 33.
The rotation range of the rotation arm 12 is regulated by being locked to the other operating angle regulation flange portions 47 and 49. The boss extension portion 51 is not limited to the illustrated shape and structure, and can be variously modified and changed.

In the state shown in FIG. 5A, the boss extending portion 51 for restricting the operating angle is engaged with the flange portion 47 for restricting the operating angle of the ring member 33 to maintain the rearmost tilted state of the rotating arm 12. Further, in the state shown in FIG. 5B, the boss extending portion 51 for controlling the operating angle is engaged with the flange portion 49 for controlling the operating angle of the ring member 33 to maintain the most inclined state.

As shown in FIG. 6A, when the reclining device 10 is in the locked state, the inner teeth 22A, 22A
The outer teeth 23 of 22B mesh with each other, and this state is held by the cam 26. When the operating lever 15 is rotated clockwise from this locked state, the cam 26 moves the inner tooth 2
2A and 22B are pulled in toward the cam shaft 14a, respectively.
As shown in (b), the engagement between the inner teeth 22A, 22B and the inner teeth 31a of the rotating arm 12 is released, and the rotating arm 12 becomes rotatable.

In the above embodiment, the case where the pair of inner teeth 22A and 22B is provided has been described, but the present invention is not limited to this, and three or more sets of inner teeth are provided at a predetermined angular interval. You may do it. Further, the base member 11, the rotating arm 12, the operating lever 15, the inner teeth 22A and 22B, and the cam 26.
The shape of is not limited to the above embodiment, and can be set to any shape.

[0029]

As described above, according to the reclining device of the first aspect, the base member and the rotating arm are formed in a circular shape, and the base member and the rotating arm are locked at positions facing each other. A mechanism is provided, a pair of bosses for preventing rotation is formed on the base member, a caulking portion is formed along the outer peripheral edge of the ring member, and the rotation stopper is provided on one side of the outer peripheral edge of the ring member. A flange portion for preventing rotation of the ring member is inserted and locked between the pair of bosses of the base member, and the caulking portion locks the outer peripheral edge of the rotating arm. Since the outer peripheral edge of the base member is caulked, it is possible to reliably prevent the base member and the rotating arm from opening,
Rotation of the ring member can be prevented, and the reclining device can be easily and quickly assembled.

According to the reclining device of the second aspect, the base member and the rotating arm are formed in a circular shape, and the locking mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed on the base member, a caulking portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation is provided on one side of the outer peripheral edge of the ring member. A flange portion for restricting the operating angle of the moving arm is provided, a boss extending portion for restricting the operating angle is formed on the rotating arm, and a flange portion for preventing rotation of the ring member is provided in the pair of bosses of the base member. Is locked between the bosses, and the boss extending portion for regulating the operating angle of the rotating arm is retained by the flange portion for regulating the operating angle of the ring member, whereby the rotation range of the rotating arm is regulated. Like Since the caulking portion is caulked on the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm, it is possible to reliably prevent the base member and the rotating arm from opening. The rotation of the member can be prevented, and the rotation range of the rotation arm can be restricted with a simple configuration.

According to the reclining device of the third aspect, the base member and the rotating arm are formed in a circular shape, and the lock mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed on the outside of the base member, a crimp portion is formed along the outer peripheral edge of the ring member, and a flange portion for preventing rotation is formed on one side of the outer peripheral edge of the ring member. And a flange portion for restricting the operating angle of the rotating arm is provided on the other side, and a boss projecting portion for restricting the operating angle is formed on the outside of the rotating arm to prevent rotation of one side of the ring member. The flange portion is inserted and locked between a pair of bosses on the outside of the base member, and the boss protruding portion for operating angle regulation on the outside of the rotating arm is attached to the flange portion for operating angle regulation on the other side of the ring member. To be locked The rotation range of the rotating arm is regulated, and the caulking portion is caulked on the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm. It is possible to reliably prevent the arm from opening, prevent the ring member from rotating, and restrict the rotating range of the rotating arm with a simple configuration.

According to the present invention, it is possible to reliably prevent the base member and the rotating arm from opening, it is possible to prevent the ring member from rotating, and the rotating range of the rotating arm is simple. Therefore, the reclining device can be assembled easily and quickly, and the reclining device having excellent economical efficiency can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a reclining device according to the present invention.

FIG. 2 is a perspective view of the reclining device according to the present invention as seen from the rotating arm side.

FIG. 3 is a perspective view of the reclining device according to the present invention viewed from the base member side.

FIG. 4 is a cross-sectional view of an assembled state of the reclining device according to the present invention.

5A and 5B respectively show a rotating state of a rotating arm of a reclining device according to the present invention, FIG. 5A is a front view of a last tilted state, and FIG. 5B is a front view of a frontmost tilted state.

6A and 6B respectively show reclining devices according to the present invention, where FIG. 6A is a front explanatory view in a locked state, and FIG. 6B is a front explanatory view in an unlocked state.

FIG. 7 is an exploded perspective view of a conventional reclining device.

[Explanation of symbols]

10 reclining device 11 Base member 12 rotating arm 14 Axis 14a cam shaft 15 Operation lever 17 insertion hole 18 circular recess 20 recess 22A inner tooth 22B Inner tooth 23 External teeth 26 cams 26a insertion hole 28 Engagement protrusion 30 insertion hole 31a internal teeth 33 Ring member 41 Non-rotating boss 43 Caulking part 45 Flange to prevent rotation 47 Flange part for controlling working angle 49 Flange part for controlling working angle 51 Boss for controlling operating angle

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-56513 (JP, A) JP-A-11-89659 (JP, A) JP-A-7-124029 (JP, A) JP-A-11- 70028 (JP, A) JP-A-6-125821 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47C 1/024

Claims (3)

(57) [Claims] 1. A base member fixed to a seat cushion side of a vehicle seat, a rotating arm rotatably supported by the base member and fixed to a seat back, and a rotating arm. A lock mechanism for locking, an operation lever for unlocking the lock mechanism, and a return spring for urging the seat back in the forward leaning direction are provided, and the outer peripheral edge of the rotating arm is provided on the outer peripheral edge of the base member. In a reclining device provided with a locking ring member, the base member and the rotating arm are formed in a circular shape, and a lock mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed on the member, a crimp portion is formed along the outer peripheral edge of the ring member, and the boss is rotated to one side of the outer peripheral edge of the ring member. A flange portion for locking is provided, the flange portion for preventing rotation of the ring member is inserted and locked between the pair of bosses of the base member, and the caulking portion locks the outer peripheral edge of the rotating arm. A reclining device characterized in that the outer peripheral edge of the base member is caulked. 2. A base member fixed to the seat cushion side of a vehicle seat, a rotating arm rotatably supported by the base member and fixed to a seat back, and a rotating arm. A lock mechanism for locking, an operation lever for unlocking the lock mechanism, and a return spring for urging the seat back in the forward leaning direction are provided, and the outer peripheral edge of the rotating arm is provided on the outer peripheral edge of the base member. In a reclining device provided with a locking ring member, the base member and the rotating arm are formed in a circular shape, and a lock mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation is formed on the member, a crimp portion is formed along the outer peripheral edge of the ring member, and the boss is rotated to one side of the outer peripheral edge of the ring member. And a flange portion for restricting the operating angle of the rotating arm are provided, a boss portion for restricting the operating angle is formed on the rotating arm, and a flange portion for preventing rotation of the ring member is provided. It is inserted and locked between a pair of bosses of the base member, and the boss projecting portion for controlling the operating angle of the rotating arm is locked by the flange portion for controlling the operating angle of the ring member. A reclining device, wherein a rotation range is regulated, and the caulking portion is caulked on the outer peripheral edge of the base member so as to lock the outer peripheral edge of the rotating arm. 3. A base member fixed to a seat cushion side of a vehicle seat, a rotating arm rotatably supported by the base member and fixed to a seat back, and a rotating arm. A lock mechanism for locking, an operation lever for unlocking the lock mechanism, and a return spring for urging the seat back in the forward leaning direction are provided, and the outer peripheral edge of the rotating arm is provided on the outer peripheral edge of the base member. In a reclining device provided with a locking ring member, the base member and the rotating arm are formed in a circular shape, and a lock mechanism is arranged at a position where the base member and the rotating arm face each other. A pair of bosses for preventing rotation are formed on the outside of the member, a caulking portion is formed along the outer peripheral edge of the ring member, and one side of the outer peripheral edge of the ring member is formed. A rotation preventing flange portion and a rotation arm operating angle regulating flange portion are respectively provided on the other side, and an operating angle regulating boss extending portion is formed outside the rotating arm. Side detent flange is inserted and locked between a pair of bosses on the outside of the base member, and the boss protrusion for regulating the operating angle on the outside of the rotating arm is on the other side of the ring member. The rotation range of the rotating arm is regulated by being locked to the regulating flange portion, and the caulking portion is caulked to the outer peripheral edge of the base member so that the caulking portion locks the outer peripheral edge of the rotating arm. A reclining device characterized by being processed.