KR20120072600A - Apparatus for folding and wake-in motionsof seat back in vehicle - Google Patents

Abstract

PURPOSE: A folding and walk-in device for a vehicle seat is provided for a folding and walk-in movement of a two-row seat in a vehicle comprising a three-row seat. CONSTITUTION: A folding and walk-in device for a vehicle seat comprises a lever bracket(5), a connecting apparatus(9), a rotor, a support bracket, and a lever pin. The lever bracket is installed in a seat cushion frame(3) to be rotated. The connecting apparatus is installed to connect the lever bracket and a reclining device. The reclining device is installed in the contact portion of the seat cushion frame and a seatback frame(7). The rotor is installed in the seat cushion frame to be rotated. The rotor is connected by a lock bracket and a lock cable. The support bracket is coupled with the seatback frame and selectively contacts the rotor. One end of the lever pin is integrally coupled with the lever bracket and the other end contacts the rotor. The lever pin controls the rotation of the rotor.

Description

Apparatus for folding and wake-in motionsof seat back in vehicle}

The present invention relates to a device which is a folding / working walk of a vehicle seat, and more particularly, to a device which is a folding / working walk of an applied vehicle seat of a two-row seat in a vehicle having a three-row seat.

The seat of the vehicle includes a seat cushion for supporting the lower body of the passenger, a seat back for supporting the upper body, and a headrest for supporting the head and neck.

In a RV (Recreation Vehicle) vehicle equipped with a three-row seat, the second-row seat has a reclining operation that allows the front and rear angle adjustment of the seatback, a folding operation that rotates the seatback forward to completely fold it, and It must be equipped with a walk-in operation to move the second row seat itself forward for getting on and off.

Here, the reclining operation of the seatback can be operated by a reclining apparatus mounted on the joint portion between the seat cushion and the seatback, and the folding operation and the walk-in operation of the seatback are performed by a device that is a folding and combined work that is commonly used. It is configured to select and use one operation.

In addition, the second row of seats should not proceed with the folding operation and the walk-in operation during the reclining operation of the seatback. On the contrary, during the folding operation and the walk-in operation, the reclining apparatus is operated with the forward rotation of the seat back. The configuration which becomes is preferable.

It is an object of the present invention to provide an apparatus which is a folding / working walk of a vehicle seat which enables the folding operation and the walk-in operation of the second row seat in a vehicle having a three row seat.

The device is a folding work of the vehicle seat of the present invention for achieving the above object, the lever bracket is rotatably installed on the seat cushion frame so that it can rotate when operating the folding lever; A connection mechanism provided to connect the lever bracket and the reclining device to operate the reclining device mounted at the joint portion of the seat cushion frame and the seat back frame when the lever bracket rotates; A rotor installed rotatably on the seat cushion frame via the rotor shaft so as to rotate in conjunction with the rotation of the lever bracket, and connected via a lock bracket and a lock cable to restrict movement of the moving rail relative to the fixed rail; A support bracket coupled to the seat back frame to rotate together with the seat back frame, the support bracket being installed to selectively contact the rotor according to the rotation of the rotor during the folding operation and the walk-in operation of the seat back frame; One end is integrally coupled with the lever bracket and the other end is installed to be in contact with the rotor. When the rotor is rotated together with the lever bracket, the rotor is rotated so that the tension of the lock cable is loosened and the rotor is brought into contact with the support bracket. When rotating, the rotor is characterized in that it comprises a lever pin to restrain not to rotate more than a predetermined angle.

In addition, the present invention and the base bracket is fixed to the seat cushion frame; A stopper bracket installed on the base bracket to be rotatable about the rotor shaft, the stopper bracket being installed to rotate together with the rotor only when the rotor rotates in contact with the support bracket; Lotus springs are mounted on both ends of the rotor and the base bracket so as to elastically return the rotor rotated by the operation of the lever pin; A stopper spring mounted on both ends of the base bracket and the stopper bracket so as to elastically return the rotor rotated by contact with the support bracket; It is installed to connect the rotor and the stopper bracket so that only the rotor can rotate about the rotor shaft when the rotor is rotated by the operation of the lever pin, and when the rotor is rotated in contact with the support bracket And a stopper pin configured to rotate the rotor and the stopper bracket together.

The device, which is a folding combined workpiece according to the present invention, can achieve weight reduction and cost reduction as the number of components is small and the overall external volume is greatly reduced, and the quality that can occur during the assembly process reduction and assembly process due to the modularization of parts. Problems (assembly of missing parts, clearance, etc.) can be greatly reduced, and furthermore, there is an effect that can be sufficiently applied to a small seat such as a small car.

1 is a perspective view of a sheet to which a device which is a folding combined work according to the present invention is applied,
2 to 14 is a view for explaining the configuration, folding operation and walk-in operation of the device, which is a folding combined walk according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 14, the device is a folding work of the vehicle seat according to the present invention, as shown in Figures 1 to 14, the lever bracket (5) rotatably installed on the seat cushion frame (3) so as to rotate when operating the folding lever (1) ) And the lever bracket (5) and the so as to operate the reclining device (70) mounted at the junction of the seat cushion frame (3) and the seat back frame (7) when the lever bracket (5) rotates. A connection mechanism 9 installed to connect the reclining apparatus 70 and the seat cushion frame 3 to be rotatable via the rotor shaft 11 so as to rotate in conjunction with the rotation of the lever bracket 5. A rotor 21 installed through the lock bracket 17 and the lock cable 19 which is installed and restrains the movement of the movable rail 15 with respect to the fixed rail 13, and rotates together with the seat back frame 7. The sheet is coupled to the seat back frame 7 so that Support bracket 23 installed to selectively contact the rotor 21 in accordance with the rotation of the rotor 21 during the folding operation and the walk-in operation of the frame (7), one end is integral with the lever bracket (5) And the other end is installed to contact the rotor 21 so that the rotor 21 is rotated to loosen the tension of the lock cable 17 when rotating together with the lever bracket 5 and the support bracket 23. When the rotor 21 is rotated in contact with the () is configured to include a lever pin 25 to restrain the rotor 21 from rotating more than a predetermined angle.

In addition, the apparatus according to the present invention is installed on the base bracket 27 fixed to the seat cushion frame (3), and rotatably around the rotor shaft (11) on the base bracket (27) while the rotor (21) Stopper bracket 29 installed to rotate together with the rotor 21 only when the support bracket 23 rotates in contact with the support bracket 23, and the rotor 21 rotated by the operation of the lever pin 25. Both ends of the rotor 21 and the base bracket 27 are fastened so that the spring 21 and the rotor 21 rotated in contact with the support bracket 23 can be elastically returned. The lever is installed to connect the stopper spring 33 and the rotor 21 and the stopper bracket 29 installed at both ends of the base bracket 27 and the stopper bracket 23 so as to return to the base bracket 27. The furnace 25 is operated by the pin 25 When the rotor 21 rotates, only the rotor 21 can rotate about the rotor shaft 11 and the rotor 21 when the rotor 21 rotates in contact with the support bracket 23. ) And a stopper pin 35 to rotate the stopper bracket 29 together.

Here, two reclining apparatus 70 is installed on the left and right sides of the seat, the two reclining apparatus 70 is integrally operatively installed via the reclining shaft 37, the reclining shaft 37 ) Is connected to the walk-in lever 39 mounted on the top of the seat back frame 7 and the walk-in cable 41 when the walk-in cable 41 is pulled toward the work-in lever 39 Or it is a structure installed so as to enable axial rotation, respectively during the rotation of the connecting mechanism 9 according to the operation of the folding lever (1).

On the other hand, the reclining apparatus 70 will be described as an example of the round reclining apparatus shown in FIG.

The round reclining apparatus 70 is composed of a plate holder 71 coupled to the seat cushion frame 3 and a sector tooth 72 coupled to the seat back frame 7, and the plate holder 71. A center of rotation protrusion 71a is formed therein, and a gear tooth 72a is formed in the sector tooth 72, and a reclining shaft 37 and a spline in the space between the plate holder 71 and the sector tooth 72 are formed. The combined cam lever 73, the cam spring 74, the pole tooth 75 formed with the gear tooth 75a is installed.

4 is a locking state in which the sector tooth 72, the gear tooth 72a and the gear tooth 75a of the pole tooth 75 engage with each other, and the rotation of the reclining shaft 37 in the state of FIG. When the cam lever 73 rotates in the counterclockwise direction, the pole tooth 75 rotates in the clockwise direction about the rotation center protrusion 71a. As a result, the sector tooth 72 and the gear tooth 72a are rotated. As the gear tooth 75a of the pole tooth 75 is disengaged, it is in the unlocked state from this time.

In the unlocking state as described above, as the sector tooth 72 can freely rotate with respect to the plate holder 71, the seat back can be adjusted in the front and rear directions.

When the external force applied to the reclining shaft 37 is removed after adjusting the angle of the seat back, the cam lever 73 returns to the restoring force of the cam spring 74, and then the fault tooth 75 returns to the sector tooth ( As the gear teeth 72a of the 72 and the gear teeth 75a of the pole tooth 75 are engaged again, the seat back is able to continuously maintain the state in which the angle adjustment is completed.

The round reclining apparatus 70 configured as described above is described in Patent Registration No. 10-0923944 filed and registered by the present applicant, which has been briefly described.

In the device of the present invention, the lever bracket 5 and the connection mechanism 9 are installed on the outer side of the seat cushion frame 3, and the rotor 21 and the base bracket 27 and The stopper bracket 29 is a structure installed on the inner side of the seat cushion frame 3 to face the lever bracket (5).

The lever bracket (5) is formed to have three ends, one end of which is rotatably coupled to the seat cushion frame (3) via a lever shaft (5a), the other end of the folding lever One end of the folding cable 43 for connection with (1) is coupled, and the connection mechanism 9 is coupled to the other end.

The connecting mechanism 9 has a shaft bracket 9a integrally coupled to one end of the reclining shaft 37 passing through the seat cushion frame 3, the lever bracket 5 and the shaft bracket 9a. It consists of a rod bracket (9b) installed to connect.

In addition, the lever pin 25 is installed to penetrate the seat cushion frame 3, and for this purpose, the lever bracket 5 rotates about the lever shaft 5a on the seat cushion frame 3. The lever pin hole 3a is formed in the shape of an arc along the rotation radius of the lever bracket 5 to allow the lever pin 25 to move.

The outer circumferential surface of the rotor 21 has one side when the rotor 21 rotates by contact with the lever pin contact protrusion 21a and the support bracket 23 that contact the lever pin 25. The stopper protrusion 21b which contacts the support bracket 23 and the other side contacts the lever pin 25, and the cable coupling protrusion 21c which is coupled to one end of the lock cable 19 protrude radially outward. It is formed integrally.

In addition, one end of the spring coupling hole 21d and one end of the stopper pin 35 penetrate the rotor 21 body, and one end of the stopper pin 35 penetrates the rotor 21 so that the rotation radius of the rotor 21 is fixed. Accordingly, the rotor hole 21e formed in an arc shape is integrally formed.

In addition, a circumferential surface between the lever pin contact protrusion 21a and the stopper protrusion 21b among the outer circumferential surfaces of the rotor 21 is formed as an arc curved surface 21f along the rotation radius of the rotor 21. In the direction toward the rotor hole 21e from the lever pin contact projection 21a, a pin insertion groove 21g recessed in the direction toward the rotor shaft 11 is formed.

In the base bracket 27, the bracket hole 27a is formed in an arc shape along the rotation radius of the rotor 21 at a position opposite to the rotor hole 21e so that the other end of the stopper pin 35 penetrates. ) Is a unitary structure.

Hereinafter, the operation of the embodiment of the present invention will be described, but first, the folding operation of the seatback will be described.

When the vehicle occupant rotates the folding lever 1 in the upward direction in the illustrated state of FIG. 2, the rotating bracket 45 rotates clockwise in the illustrated state, and the folding cable 43 rotates the rotating bracket 45. Is pulled to the side.

Then, the lever bracket 5 rotates counterclockwise about the lever shaft 5a, and the lever pin 25 moves along the lever pin hole 3a.

When the lever bracket 5 rotates counterclockwise in the illustrated state of FIG. 2, the shaft bracket 9a connected to the rod bracket 9b rotates counterclockwise in the illustrated state and engages with the shaft bracket 9a. Since the reclining shaft 37 rotates counterclockwise, the reclining apparatus 70 mounted on the left and right sides of the seat has a sector tooth 72, a gear tooth 72a, and a gear of the pole tooth 75. As the teeth 75a are disengaged, the lock 75 is released.

Further, when the lever bracket 5 rotates counterclockwise about the lever shaft 5a and at the same time the lever pin 25 moves along the lever pin hole 3a, the lever pin 25 is shown in FIG. In the illustrated state, the rotor 21 is rotated clockwise by the contact with the lever pin contact protrusion 21a. As a result, the rotor 21 rotates clockwise around the rotor shaft 11 as shown in FIG. 8. In this case, the lever pin 25 is inserted into the pin insertion groove 21g of the rotor 21 as shown in FIG.

Here, the stopper protrusion 21b of the rotor 21 is located at the rotation radius of the support bracket 23 when the rotor 21 is not rotated as shown in FIG. Although the rotation is in a state of restraining, when the rotor 21 is rotated in the clockwise direction as shown in FIG. 8, the stopper protrusion 21b is out of the rotation radius of the support bracket 23. The support bracket 23 is freely rotated by being restrained by the stopper protrusion 21b.

In addition, when the rotor 21 rotates clockwise around the rotor shaft 11 as shown in FIGS. 3 to 8 by the lever pin 25, the lotus spring 21 is compressed. , The lock cable 19 is to maintain a loose state in which tension does not occur.

When the lock cable 19 is maintained in a loose state, the forks 17a provided in the lock bracket 17 are fork holes 13a and 15a of the fixed rail 13 and the moving rail 15 as shown in FIG. 9. As the moving rail 15 is maintained at the same time, the moving rail 15 maintains a restrained state in which the slide rail cannot be moved with respect to the fixed rail 13.

On the other hand, when the reclining apparatus 70 is in the unlocked state as described above, and the rotor 21 is rotated in the clockwise direction as shown in FIG. 8, the seat back frame 7 is the reclining spring 47. It rotates forward by the restoring force of), and as a result the seat back of the vehicle is folded as shown in FIG.

The reclining spring 47 is a coil spring, one end is caught by the seat cushion frame 3 and the other end is hanged by the support bracket 23.

Even when the seatback is folded as the seatback frame 7 rotates forward as shown in FIG. 10, the movable rail 15 slides forward along the fixed rail 13 due to the restraining force of the lock bracket 17. As a result, the walk-in operation of the sheet does not occur.

In addition, the seat back rotated forward is folded back to the initial state as shown in FIG. 1 when the user pushes the seat back to the rear again to prepare for the next operation.

Next, the walk-in operation of the sheet will be described.

When the vehicle occupant lifts the walk-in lever 39 mounted on the top of the seat back upward as shown in FIG. 11, the walk-in cable 41 is pulled toward the walk-in lever 39, and the walk-in cable ( 41, the left shaft bracket 49 rotates clockwise in the illustrated state, and the reclining shaft 37 integrally coupled with the left shaft bracket 49 rotates clockwise in the state shown in FIG. do.

The state in which the reclining shaft 37 rotates clockwise in the illustrated state of FIG. 11 is the same as the state in which the reclining shaft 37 rotates counterclockwise in the illustrated state of FIG. 2. The device 70 is unlocked and at the same time the shaft bracket 9a on the right side also rotates counterclockwise in the state shown in FIG.

As described above, when the shaft bracket 9a on the right side rotates counterclockwise in the state shown in FIG. 2, the lever bracket 5 is operated by the operation of the rod bracket 9b connected to the shaft bracket 9a. It rotates counterclockwise in the state shown in FIG. 2 about 5a), and the lever pin 25 contacts the rotor 21 as it moves along the lever pin hole 3a, and the said rotor 21 is rotated. In the illustrated state of FIG. 3, the seatback frame 7 is rotated in the clockwise direction, but as the unlocking of the reclining apparatus 70 proceeds earlier than the clockwise rotation of the rotor 21 by the lever pin 25. And the support bracket 23 is quickly rotated forward by the restoring force of the reclining spring (47).

Then, before the stopper protrusion 21b of the rotor 21 leaves the rotation radius of the support bracket 23, the stopper protrusion 21b comes into contact with the support bracket 23, and thus the rotor 21 As shown in FIG. 12, the stopper bracket 29 rotates counterclockwise about the rotor shaft 11. The counterclockwise rotation of the rotor 21 causes the stopper protrusion 21b to be a lever pin. It proceeds until it hangs at (25).

As shown in FIG. 12, when the rotor 21 rotates counterclockwise and the seatback frame 7 rotates forward, the stopper protrusion 21b of the rotor 21 is caught and fixed to the lever pin 25. The seatback frame 7 is completely rotated forward, that is, not folded as shown in FIG. 10, but is fixed by rotating at an angle of about 30 degrees (°). It keeps half folding.

In addition, when the rotor 21 rotates in the counterclockwise direction as described above to maintain the anti-folding state of the seat back, as the lock cable 19 is pulled upward as shown in FIG. ) Rotates clockwise in the state shown in FIG.

Then, the fork 17a provided in the lock bracket 17 is removed from both the fixed rail 13 and the fork holes 13a and 15a of the movable rail 15 as shown in FIG. 13. The restrained state is released, and at the same time, the movable rail 15 slides forward along the fixed rail 13 by the pulling force (elastic restoring force) of the work spring 51, and as a result, the seat of the vehicle 14 performs an operation that is a walked forward as shown in FIG.

Here, the work spring 51 is a compression spring, one end is installed by hanging on the front fixed rail 13 and the other end is installed by being connected to the rear moving rail 15, the seat cushion is moved to the rear In this state, the length is maintained while the length is reduced, and the length is reduced by the elastic restoring force during the work-in operation.

Then, the user pushes the seat back to move the seat back to the walk-in operation, and the semi-folded seatback is rotated and raised to return to the initial state as shown in FIG. 1 to prepare for the next operation.

As described above, the present invention is a device capable of performing both the folding operation of the seat back and the walk-in operation of the seat. As a result, it is possible to achieve weight reduction and cost reduction, and furthermore, there is an advantage that can be sufficiently applied to a small seat such as a small car.

In addition, the present invention has the advantage that can greatly reduce the quality problems (assembly missing parts, play, etc.) that can occur in the assembly process reduction and assembly process according to the modularization of parts.

1-Folding lever 3-Seat cushion frame
5-Lever Bracket 7-Seat Back Frame
9-coupling mechanism 11-rotor shaft
13-fixed rail 15-moving rail
17-Lock Bracket 19-Lock Cable
21-Rotor 23-Support Bracket
25-Lever Pin 27-Base Bracket
29-stopper bracket 37-reclining shaft
39-walk-in lever 70-reclining unit

Claims (10)

A lever bracket 5 rotatably installed on the seat cushion frame 3 so as to rotate when the folding lever 1 is operated;
When the lever bracket 5 rotates, the lever bracket 5 and the reclining device (70) can be operated to operate the reclining device 70 mounted at the junction of the seat cushion frame 3 and the seat back frame 7. A connection mechanism 9 installed to connect 70;
It is installed rotatably on the seat cushion frame 3 via the rotor shaft 11 so as to rotate in conjunction with the rotation of the lever bracket (5) and the movement of the movable rail 15 relative to the fixed rail (13) A rotor 21 connected via a lock bracket 17 and a lock cable 19 for restraining the lock bracket;
The rotor 21 is coupled to the seat back frame 7 so as to rotate together with the seat back frame 7, depending on whether or not the rotor 21 is rotated during the folding operation and the walk-in operation of the seat back frame 7. A support bracket 23 installed to selectively contact with;
One end is integrally coupled with the lever bracket (5) and the other end is installed to contact the rotor (21) so that when rotating with the lever bracket (5) the lock cable (17) to loosen the tension of the rotor ( When the rotor 21 is rotated by rotating the rotor 21 in contact with the support bracket 23, the lever pin 25 restrains the rotor 21 from being rotated by a predetermined angle or more.
Apparatus which is a folding combined work of the vehicle seat comprising a. The base bracket (27) fixed to the seat cushion frame (3);
The base bracket 27 is rotatably installed about the rotor shaft 11 so that the rotor 21 rotates together with the rotor 21 only when the rotor 21 rotates in contact with the support bracket 23. An installed stopper bracket 29;
Lotus springs (31) installed on both ends of the rotor (21) and the base bracket (27) to elastically return the rotor 21 rotated by the operation of the lever pin (25);
A stopper spring (33) mounted on both ends of the base bracket (27) and the stopper bracket (23) to elastically return the rotor (21) rotated in contact with the support bracket (23);
The rotor 21 is installed to connect the stopper bracket 29 so that when the rotor 21 is rotated by the operation of the lever pin 25, only the rotor 21 is centered on the rotor shaft 11. A stopper pin 35 to allow the rotor 21 and the stopper bracket 23 to rotate together when the rotor 21 rotates in contact with the support bracket 23.
The device is a folding combined walkway of the vehicle seat, characterized in that it further comprises. The apparatus of claim 1, wherein two reclining apparatuses are provided on left and right sides of the seat;
The two reclining devices 70 are integrally and operatively installed via a reclining shaft 37;
The reclining shaft 37 is connected to the work in lever 30 mounted on the top of the seat back frame 7 and the work in cable 41 while the walk in cable 41 is connected to the work in lever 39. When the shaft is pulled toward the side or when the connecting mechanism 9 is rotated according to the operation of the folding lever 1, respectively.
A device that is a folding and combined work of a vehicle seat, characterized in that. The method according to claim 3, wherein the lever bracket (5) and the connecting mechanism (9) is installed on the outer side of the seat cushion frame (3);
The rotor 21, the base bracket 27 and the stopper bracket 29 are installed on the inner side of the seat cushion frame (3) to face the lever bracket (5)
A device that is a folding and combined work of a vehicle seat, characterized in that. The method according to claim 4, wherein the lever bracket (5) is formed to have three ends, one end of which is rotatably coupled to the seat cushion frame (3) via a lever shaft (5a);
The other end of which one end of the folding cable 43 for connection with the folding lever 1 is coupled;
The other end is coupled to the connecting mechanism (9)
A device that is a folding and combined work of a vehicle seat, characterized in that. The method according to claim 5, wherein the connecting mechanism (9)
A shaft bracket 9a integrally coupled to one end of the reclining shaft 37 passing through the seat cushion frame 3;
A rod bracket 9b installed to connect the lever bracket 5 and the shaft bracket 9a.
The device is a folding combined work of the vehicle seat, characterized in that consisting of. The method according to claim 5, wherein the lever pin (25) is installed to pass through the seat cushion frame (3);
The seat cushion frame 3 has a lever pin hole 3a that enables the lever pin 25 to move when the lever bracket 5 rotates about the lever shaft 5a. Formed in the shape of an arc along the radius of rotation of (5)
A device that is a folding and combined work of a vehicle seat, characterized in that. 3. The rotor 21 of claim 2, wherein the rotor 21 rotates on the outer circumferential surface of the rotor 21 by contact with the lever pin contact protrusion 21a and the support bracket 23 that contact the lever pin 25. When the one side is in contact with the support bracket 23, the other side is in contact with the lever pin 25, the stopper projection (25b), the cable engaging projection (21c) is coupled to one end of the lock cable (19) in the radially outer side Integrally formed to protrude into;
The rotor 21 has a spring coupling hole 21d in which one end of the lotus spring 31 is fixed and fixed to the body of the rotor 21, and one end of the stopper pin 35 penetrates through an arc along a rotation radius of the rotor 21. Integrally formed with rotor holes 21e
A device that is a folding and combined work of a vehicle seat, characterized in that. The outer peripheral surface of the rotor 21 according to claim 2
A circumferential surface between the lever pin contact protrusion (21a) and the stopper protrusion (21b) is formed as an arc curved surface (21f) along the rotation radius of the rotor (21);
In the direction toward the rotor hole (21e) from the lever pin contact projection (21a) is formed a pin insertion groove (21g) recessed in the direction toward the rotor shaft (11)
A device that is a folding and combined work of a vehicle seat, characterized in that. The bracket hole according to claim 8, wherein the other end of the stopper pin 35 penetrates in a position opposite to the rotor hole 21e in the base bracket 27 and is formed in an arc shape along the rotation radius of the rotor 21. (27a) integrally formed
A device that is a folding and combined work of a vehicle seat, characterized in that.

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