KR102402989B1 - Seat Back Locking Device For vehicle - Google Patents

Abstract

The present invention relates to a seatback locking device for a vehicle, comprising: a base bracket to which a recliner is coupled to one side; an arm plate coupled to a back frame; a holder bracket for rotatably supporting the arm plate; and an arm plate by covering the holder bracket; A guide bracket coupled to the arm plate to rotate together, a seatback locking unit provided on the holder bracket and the arm plate for locking the seatback, a release unit provided on the arm plate for unlocking the seatback locking unit, and the seat and a seatback locking operation unit for locking the seatback locking unit by operating the seatback locking unit when the recliner lever is operated to release the locking of the recliner when the seat is restored after the walk-in. Accordingly, by providing a locking means for locking the seatback locking unit in the case of malfunction of the recliner lever in the holder bracket coupled to the recliner, the seatback is locked when the seat is returned to its original state after a walk-in to facilitate the return of the seat to its original state, and It has the effect of improving convenience.

Description

Seat Back Locking Device For vehicle}

The present invention relates to a seatback locking device for a vehicle, and more particularly, to a seatback locking device for a vehicle capable of smoothly returning the walk-in to its original state by configuring the seatback to be locked when the recliner lever is operated during a sea walk-in. is about

In general, an automobile seat includes a seat cushion that supports a load of an occupant and is installed indoors, and a seat back that is rotatably installed with respect to the seat cushion to support the back of the occupant.

The seat includes a device for locking a seat rail for movably coupling the seat to the floor of the vehicle in order to adjust the position of the seat by pulling or pushing the seat forward and backward to fit the driver or passenger, and the seat cushion. A recliner for adjusting the angle of the seatback is provided.

On the other hand, recently, in the case of a three-door vehicle or a coupe vehicle, the front seat is moved forward in order to board the rear seat occupant to increase the opening area of the door. In particular, the door opening is maximized by folding the seat back together with the sliding of the seat. At this time, sliding the front seat forward is called a walk-in function.

The conventional seat having such a walk-in function is configured to be fixed after adjusting the inclination angle of the seatback using the reclining function, and at the same time, when the walk-in function is performed, the recliner device is configured to fold the seatback in a locked state so that the occupant can board A locking device for locking the seatback is provided for this purpose.

This seatback locking device includes a mounting bracket having a recliner device fixed to one side and fixed to a cushion frame, a through hole formed therein and an arm plate for fixing the back frame, and a plurality of gears fixed to the recliner unit through the through hole. A holder bracket in which teeth are formed in a certain section on the outer edge, a release lever rotatably coupled to the arm plate, a locking lever in which other gear teeth are formed so as to engage or disengage from the gear teeth of the holder bracket, and elastically support the release lever. It includes an elastic member for returning to its original position after the walk-in operation.

Therefore, the conventional vehicle seat having a walk-in function is configured to move the seat forward by operating the walk-in lever in a state in which the seat back is folded forward. That is, by manipulating the walk-in lever to release the locking of the seat rail, the seat moves forward. At this time, the recliner device is in a non-operational state.

Thereafter, when the occupant completes the walk-in operation and returns the seat to its original position, the occupant accidentally manipulates the recliner lever. Then, when the locking device of the seatback is released and the seatback is in a rotating state, even when the walk-in lever operation is completed, when the gear part of the locking lever is meshed with the gear part of the holder bracket and locked, the gear part of the locking lever due to the positional deviation There is a problem that the gear part of the holder bracket does not mesh with each other.

To solve this, an anti-rotation bracket for preventing the recliner lever from rotating was combined with the mount bracket to prevent the recliner lever from malfunctioning in the process of restoring the seatback.

However, as described above, there is a problem in that a separate part must be added to prevent malfunction of the recliner lever, thereby increasing the assembly process and increasing the manufacturing cost.

Korean Patent Publication No. 2013-0024624 (2013.03.08.)

Therefore, the present invention has been devised to solve the above problems, and is configured to lock the seatback when the recliner lever is operated when the seatback is restored to its original state after walk-in, so that the seat back can be returned to its original state smoothly after the walk-in. An object of the present invention is to provide a seatback locking device for a vehicle.

The present invention for achieving the above object is coupled to the cushion frame, the base bracket to which the recliner is coupled to one side, and rotatably coupled to the base bracket, a through hole is formed so that the recliner is exposed, An arm plate coupled to the back frame, a holder bracket that is fixed to a recliner exposed through a through hole of the arm plate to rotatably support the arm plate, and a shaft hole through which the shaft is formed in the center, and the arm by covering the holder bracket A seatback coupled to the arm plate to rotate with the plate, a guide bracket forming a space between the arm plate and the holder bracket and the arm plate to prevent the arm plate from rotating with respect to the holder bracket to lock the seatback A locking unit, a release unit provided on the arm plate for unlocking the seatback locking unit, and a seatback locking unit operated when the recliner is unlocked by operating the recliner lever when the seat is restored after work-in of the seat It is characterized in that it comprises a seatback locking operation unit for locking.

In addition, the seatback locking unit is formed on the outer edge of the holder bracket, and a first gear portion consisting of a plurality of gear teeth formed in a predetermined section is spaced apart from the first gear portion and one end is hinged to the arm plate, and the other It is preferable to include a locking lever having a second gear portion meshed with the first gear portion at an end thereof, and a pressing member hinged to the arm plate to press the locking lever to prevent rotation of the locking lever.

In addition, the release unit is rotatably coupled to the arm plate with the same hinge as the pressing member, and a connection part to which a cable for a walk-in operation is connected is formed apart from the hinge, and is provided on the release lever and the locking lever. , a locking lever operating cam for rotating the locking lever when the release lever is rotated, a pressing member operating part provided on the release lever and the pressing member to rotate the pressing member, and a hinge which is the rotation center of the release lever, It is preferable that both ends are elastically supported by the release lever and the guide bracket, respectively, and an elastic force acts when the release lever is rotated during a walk-in operation, and a first elastic member for returning the release lever to its original position is included.

In addition, the locking lever actuating cam is formed to be spaced apart from a cam projection formed on the locking lever spaced apart from the hinge, which is the rotation center of the locking lever, and the hinge, which is the rotation center of the release lever. desirable.

In addition, the pressing member operating unit includes a fitting hole formed to be spaced apart from the hinge, which is the rotation center of the release lever, and a fitting protrusion formed to protrude from the pressure member and fitted into the fitting hole, but in the fitting hole when the release lever is rotated. It is preferable to be configured to rotate the pressing member by the fitting projection to be fitted.

In addition, the seatback locking operation unit includes a coupling shaft coupled to the shaft hole of the holder bracket in a pipe shape to rotate together with the holder shaft, and is fixed to the outer circumferential surface of the coupling shaft to rotate together with the holder bracket, and is spaced apart from the coupling shaft A hook bracket provided with a first support protrusion, a support bracket formed to be spaced apart from the coupling shaft, and fixed to the guide bracket from the opposite side of the first support protrusion, are fitted and coupled to the coupling shaft, both ends supporting the hook bracket, respectively It is preferable to include a second elastic member each elastically supported by the bracket.

In addition, the second elastic member acts as an elastic force in the locked state of the recliner after the seat walk-in, and when the occupant operates the recliner lever to release the lock of the recliner, the holder bracket to which the coupling shaft is fixed It is preferable to rotate the locking lever toward the second gear portion so that the first gear portion of the holder bracket meshes with the second gear portion of the locking lever.

According to the present invention, by providing a locking means for locking the seatback locking unit when the recliner lever malfunctions in the holder bracket coupled to the recliner, the seatback is locked when the seat is returned to its original state after a walk-in, so that the seat can be returned to its original state smoothly and , which has the effect of improving user convenience.

1 is a perspective view showing a seatback locking device according to an embodiment of the present invention;
Figure 2 is a rear perspective view of Figure 1;
Figure 3 is an exploded perspective view of Figure 2;
Figure 4 is a perspective view showing the seatback locking unit and the release unit of the seatback locking device of Figure 1;
5 to 7 are front views showing the operation process of the seatback locking operation unit of the seatback locking device.

Detailed embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a perspective view showing a seatback locking device according to an embodiment of the present invention, FIG. 2 is a rear perspective view of FIG. 1 , and FIG. 3 is an exploded perspective view of FIG. 2 . 4 is a perspective view illustrating a seatback locking unit and a release unit of the seatback locking device of FIG. 1 . 5 to 7 are front views showing the operation process of the seatback locking operation unit of the seatback locking device.

First, the vehicle seat is composed of a seat cushion on which an occupant is seated and a seat cushion for supporting the occupant's back, coupled to the cushion frame of the seat cushion, and the seatback is coupled to the back frame. Here, a recliner for adjusting the inclination angle of the seat back with respect to the seat cushion is coupled between the cushion frame and the back frame. The sheet is provided with a sheet folding device for folding the sheet in conjunction with the walk-in function.

The seatback locking device for a vehicle according to an embodiment of the present invention locks the locking of the seatback when the recliner lever 101 is operated to unlock the recliner 102 while the seatback is restored after folding the seatback for a walk-in operation. It includes a base bracket 110, an arm plate 120, a holder bracket 130, a guide bracket 140, a seatback locking unit 150, a release unit 160, and a seatback locking operation unit 170. do.

First, the base bracket 110 is coupled to the cushion frame, the recliner 102 for adjusting the inclination of the seatback is coupled to one side thereof, and the recliner lever for operating the recliner 102 to the other side thereof ( 101) is rotatably coupled.

The upper portion of the base bracket 110 is formed with a bent portion that is bent, and the cut portion for determining the angle at which the arm plate 120 coupled to the back frame is rotated is formed at a predetermined interval in the bent portion.

The arm plate 120 is rotatably coupled to the base bracket 110 in a state coupled to the back frame, and a through hole 121 through which the recliner 102 is exposed is formed. That is, the arm plate 120 is in close contact with the base bracket 110 on the side to which the recliner 102 is coupled, so that the recliner 102 is exposed through the through hole 121 .

The arm plate 120 is rotatably configured by the holder bracket 130 being coupled to the recliner 102 after the recliner 102 is in close contact with the base bracket 110 so that it is exposed through the through hole. .

The holder bracket 130 is welded and fixed to the sector tooth rotated when the recliner 102 is unlocked and serves to support the arm plate 120 to be rotated between it and the base bracket 110 . In the center of the holder bracket 130 , a shaft hole through which a shaft for coupling the recliner lever 101 for operating the recliner 102 is formed is formed.

After the seatback locking unit 150 and the release unit 160 are installed on the arm plate 120, the guide bracket 140 is spaced apart from the arm plate 120 and installed close to the holder bracket 130 to the arm plate 120. An installation space is formed between the

The seatback locking unit 150 is fixed to the back frame and is for locking the seatback by preventing the arm plate 120 rotating together with the back frame when the seatback is folded to lock the seatback. and a locking lever 152 having a gear portion 152a.

The first gear unit 151 includes a plurality of gear teeth formed at a predetermined length on the outer edge of the holder bracket 130 .

The locking lever 152 is hingedly coupled to the arm plate 120 coupled to the back frame from the upper side of the holder bracket 130 and rotates while rotating the second gear part 152a that meshes with the first gear part 151. be prepared That is, one end of the locking lever 152 is hinged to the arm plate 120 from the upper side of the holder bracket 130 , and the second gear portion 152a formed on the opposite side by rotating about one end is the first gear. It is configured to mesh with the portion 151 .

The seatback locking unit 150 is hinged to the arm plate 120 above the locking lever 152 and presses the upper side of the locking lever 152 to prevent the locking lever 152 from flowing and unlocking. It further includes a pressing member (153).

The release unit 160 is for releasing the locking of the seatback locking unit 150 when performing a walk-in operation to make the seat walk-in, the release lever 161, the locking lever operating cam 162, pressurization It includes a member operating part 163 and a first elastic member 164 .

The release lever 161 is rotatably coupled to the arm plate 120 by the same hinge as the pressing member 153 . The release lever 161 has a connection portion 161a to which a cable for a walk-in operation is connected and is formed to protrude from one side.

That is, the connection portion 161a of the release lever 161 is connected by a cable to a walk-in lever (not shown) for operation by the occupant during the walk-in operation, and is pulled by the cable when the occupant operates the walk-in lever. When the connection portion 161a of the release lever 161 is pulled in this way, the release lever 161 is rotated.

The locking lever actuating cam 162 is spaced apart from the cam projection 162a protruding from the locking lever 152 and the hinge, which is the rotation center of the release lever 161, formed on the opposite side of the connection part 161a, and formed on the opposite side of the cam projection ( 162a) includes a cam hole 162b that is inserted and moved.

The cam protrusion 162a is spaced apart from the hinge, which is the center of rotation of the locking lever 152 , and is formed to protrude from the locking lever 152 .

That is, when the release lever 161 is rotated, the cam projection 162a is caught on the end of the cam hole 162b and the cam projection 162a is also moved together with the release lever 161 . At this time, as the locking lever 152 on which the cam projection 162a is formed is rotated, the second gear part 152a of the locking lever 152 is separated from the first gear part 151 of the holder bracket 130. The locking of the seatback locking unit 150 is released.

The pressing member operating unit 163 includes a fitting hole 163a formed between the hinge, which is the rotation center of the release lever 161 and the cam hole 162b, and a pressing member 153 protruding into the fitting hole 163a. It includes a fitting protrusion (163b).

That is, when the release lever 161 is rotated, the locking lever 152 as the pressing member 153 rotates by rotating the fitting protrusion 163b fitted in the fitting hole 163a together with the release lever 161. is released from being pressurized.

The first elastic member 164 is coupled to the hinge which is the rotation center of the release lever 161, both ends are elastically supported by the release lever 161 and the guide bracket 140, respectively, and the release lever 161 is operated during the walk-in operation. When rotated, an elastic force acts, and this elastic force serves to return the release lever 161 to its original position.

The seatback locking operation unit 170 is coupled to the holder bracket 130 and the guide bracket 140, and is for operating the seatback locking unit 150 when the recliner lever 101 is operated when the seat is restored after walk-in. It includes a shaft 171 , a hook bracket 172 , a second elastic member, and a support bracket 174 .

The coupling shaft 171 is coupled to the holder bracket 130 and is formed in a pipe shape so that the shaft to which the recliner lever 101 fitted into the shaft hole of the holder bracket 130 is coupled passes through. That is, the coupling shaft 171 is configured to rotate together with the holder bracket 130 when the recliner 102 is unlocked.

The hook bracket 172 is coupled to the outside of the coupling shaft 171 and configured to rotate together with the coupling shaft 171 , and a first support protrusion formed to protrude to support one end of the second elastic member 173 ( 171a) is provided.

The support bracket 174 is spaced apart from the coupling shaft 171 by a certain distance, and is fixed to the guide bracket 140 from the opposite side of the first support protrusion 172a of the hook bracket 172, and the second elastic member 173. support the other end of

The second elastic member 173 is formed in a ring shape, and both ends protrude to the outside of the ring and project to opposite sides to be supported by the hook bracket 172 and the support bracket 174 , respectively.

The second elastic member 173 has an elastic force applied to the second elastic member 173 before the recliner 102 is operated, that is, when the inclination of the seatback is adjusted, and then the recliner lever 101 is operated to lock the recliner 102 . When this is released, the holder bracket 130 fixed to the sector gear of the recliner 102 is rotated. That is, the second elastic member 173 rotates the holder bracket 130 counterclockwise in FIG. ) to match the

An operation of the seatback locking device of a vehicle seat according to an embodiment of the present invention having the above configuration will be briefly described.

First, the initial state is when the seatback is not folded before the walk-in operation and the seat is in a fixed state. will perform

When the passenger operates the walk-in lever provided on the seat, the release lever 161 shown in FIG. 1 connected to the walk-in lever by a cable is rotated counterclockwise.

At this time, the pressing member 153 connected to the fitting protrusion 163b inserted into the fitting hole 163a of the release lever 161 is rotated clockwise to release the pressing of the locking lever 152 . At the same time, as the cam protrusion 162a of the locking lever 152 moves downward of the cam hole 162b of the release lever 161, the second gear part 152a of the locking lever 152 moves upward, and the holder bracket The seatback locking is released as it is separated from the first gear unit 151 of 130 .

In this way, when the seat back locking is released, the arm plate 120 coupled to the back frame is in a state in which it can be rotated counterclockwise (in the forward direction of the seat) in FIG. Accordingly, when the passenger pushes the seatback coupled to the arm plate 120 forward, the seatback is folded forward, and the state is as shown in FIG. Here, the recliner 102 is in a locked state.

Thereafter, when the passenger's boarding is finished, the walk-in seatback is returned to its original position. is released Then, the sector tooth of the recliner 102 is in a rotatable state.

Thereafter, both ends are supported by the hook bracket 172 coupled to the coupling shaft 171 configured to be rotated together with the sector tooth and the support bracket 174 fixed to the holder bracket 130 to act as an elastic force. The holder bracket 130 fixed to the sector tooth by the elastic force of the elastic member 173 is rotated counterclockwise in FIG. Then, as the first gear part 151 of the holder bracket 130 meshes with the second gear part 152a of the locking lever 152 , the seatback is in a locked state. Thereafter, the passenger ends the operation of the recliner lever 101 after adjusting the inclination to fit his/her body shape while restoring the seatback to its original state.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art can make various modifications and equivalent other embodiments therefrom. You will understand that it is possible. Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

101: recliner lever 102: recliner
110: base bracket
120: arm plate
130: holder bracket
140: guide bracket
150: seatback locking unit
151: first gear unit 152: locking lever
152a: second gear part 153: pressing member
160: release unit
161: release lever 161a: connection part
162: locking lever operation cam 162a: cam projection
162b : Camhole
163: pressing member operating part 163a: fitting hole
163b: fitting projection
164: first elastic member
170 ; Seatback locking operation unit
171: coupling shaft 172: hook bracket
172a: first supporting projection
173: second elastic member 174: support bracket

Claims (7)

A base bracket coupled to the cushion frame, the recliner is coupled to one side;
an arm plate rotatably coupled to the base bracket, having a through hole through which the recliner is exposed, and coupled to the back frame;
a holder bracket fixed to the recliner exposed through the through hole of the arm plate to rotatably support the arm plate, and having a shaft hole through which the shaft passes in the center;
a guide bracket that covers the holder bracket and is coupled to the arm plate so as to be rotated together with the arm plate, and forms a space therebetween;
a seatback locking unit provided on the holder bracket and the arm plate to lock the seatback by preventing the arm plate from rotating with respect to the holder bracket;
a release unit provided on the arm plate to unlock the seatback locking unit;
A seatback locking device for a vehicle comprising a; a seatback locking operation unit for locking the seatback locking unit by operating the seatback locking unit when the recliner lever is operated to release the locking of the recliner when the seat is restored after the seat walk-in. The method according to claim 1,
The seatback locking unit is
Doedoe formed on the outer edge of the holder bracket, the first gear portion consisting of a plurality of gear teeth formed in a predetermined section;
a locking lever spaced apart from the first gear part, one end hinged to the arm plate, and the other end provided with a second gear part meshed with the first gear part;
a pressing member hinged to the arm plate to prevent the locking lever from rotating by pressing the locking lever;
Seatback locking device for a vehicle, characterized in that it comprises a. 3. The method according to claim 2,
The release unit is
a release lever that is rotatably coupled to the arm plate with the same hinge as the pressing member, and that a connection part to which a cable for a walk-in operation is connected is spaced apart from the hinge;
a locking lever operating cam provided on the release lever and the locking lever to rotate the locking lever when the release lever is rotated;
a pressing member operating unit provided on the release lever and the pressing member to rotate the pressing member;
It is coupled to the hinge, which is the rotation center of the release lever, and both ends are elastically supported by the release lever and guide bracket, respectively, and elastic force acts when the release lever is rotated during walk-in operation, and the first elasticity to return the release lever to its original position absence;
Seatback locking device for a vehicle, characterized in that it comprises a. 4. The method according to claim 3,
Locking lever operating cam,
a cam projection formed on the locking lever spaced apart from the hinge, which is the pivotal center of the locking lever;
a cam hole formed apart from the hinge, which is the rotation center of the release lever, into which a cam projection is inserted;
Seatback locking device for a vehicle, characterized in that it comprises a.
4. The method according to claim 3,
The pressing member operating unit,
a fitting hole formed apart from the hinge which is the rotation center of the release lever;
a fitting protrusion formed to protrude from the pressing member and fitted into the fitting hole;
including,
The seatback locking device for a vehicle, characterized in that it is configured to rotate the pressing member by a fitting protrusion fitted into the fitting hole when the release lever is rotated.
The method according to claim 1,
The seatback locking operation unit is
a coupling shaft coupled to the shaft hole of the holder bracket in a pipe shape and rotated together with the holder shaft;
a hook bracket fixed to the outer circumferential surface of the coupling shaft, configured to rotate together with the holder bracket, and provided with a first support protrusion spaced apart from the coupling shaft;
a support bracket formed to be spaced apart from the coupling shaft and fixed to the guide bracket from the opposite side of the first support protrusion;
a second elastic member fitted into the coupling shaft and coupled, both ends of which are elastically supported by the hook bracket and the support bracket, respectively;
Seatback locking device for a vehicle, characterized in that it comprises a.
7. The method of claim 6,
The second elastic member,
After the seat walk-in, when the recliner applies elastic force in the locked state and the occupant operates the recliner lever to unlock the recliner, move the holder bracket to which the coupling shaft is fixed to the second gear part of the locking lever. A seatback locking device for a vehicle, characterized in that the first gear part of the holder bracket meshes with the second gear part of the locking lever by rotating toward the .

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