KR20190052269A - Folding device for rear seat of vehicle - Google Patents

Abstract

The present invention relates to a folding device for a rear seat of a vehicle. The folding device for a rear seat of a vehicle comprises: a folding unit connecting a seatback frame to a seat cushion frame of a rear seat to rotate and folding or unfolding a seatback including the seatback frame; a switching unit capable of rotating the seatback frame by releasing a hanging state of a rotation prevention unit locked in a hanging state to prevent the seatback frame from rotating; and a control unit rotating the seatback frame by controlling the folding unit after releasing the hanging state of the rotation prevention unit by controlling the switching unit. According to the present invention, the folding device for a rear seat of a vehicle controls the folding unit and the switching unit using an electric method by the control unit and automatically folds or unfolds the seatback of the rear seat.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a rear seat folding device,

The present invention relates to a rear seat folding apparatus for a vehicle, and more particularly, to a rear seat folding apparatus for a vehicle having a structure capable of folding or unfolding a seatback through a transmission system.

Generally, only one rear seat is provided on the rear side of the front seat of a passenger car, but two or three or more rear seats are provided for a companion vehicle including an RV vehicle. A separate folding device is installed in the rear row of two to three rows so as to utilize the rear row of the two or three rows as a space for loading the passenger without loading the passenger. Thus, by operating the folding device, the seatback is folded forward and brought into close contact with the seat cushion, whereby the rear surface of the seatback, that is, the folded upper surface of the seatback becomes a loading space leading to the trunk space.

This prior art related to the rear seat disclosed in Japanese Patent Application Laid-Open No. 10-0448117 (September 01, 2004) "rear seat folding structure for an automobile" has been disclosed. The rear seat according to the prior art has a structure for folding and fixing the rear seat cushion and the rear seat back easily by folding the rear seatback into a rear seat cushion and folding back the rear seat cushion to be positioned just behind the front seatback, As a loading space.

However, the conventional rear seat requires a physical external force by the user because it requires direct manual operation of the user in order to fold the rear seat back or restore the folded rear seat back to the unfolded state. That is, there is a problem that it is very difficult for an elderly person, a child, a handicapped or the like having a relatively weak physical strength compared to a general adult to fold or unfold a conventional rear seat.

In addition, since the conventional rear seat has to fold or unfold the rear seatback according to a predetermined method, it is very difficult for a user who is new to folding or unfolding the seatback to perform such a process to fold or unfold the seatback There was a difficult problem.

Korean Patent No. 10-0448117 (September, 2004) "Rear Seat Folding Structure for Automobile"

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rear seat folding apparatus for an automobile which can be folded and folded in a rear seat.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a vehicle rear seat folding apparatus comprising: folding means for pivotally connecting a seat back frame to a seat cushion frame of a rear seat to fold or unfold the seat back; A switching unit for releasing a locking state of the rotation support member locked in a locked state to prevent rotation of the seatback frame to enable rotation of the seatback frame; And a control unit controlling the switching unit to release the hooking state of the rotation support unit and then controlling the folding unit to rotate the seatback frame.

The folding unit includes: a base bracket mounted on the seat cushion frame, the base bracket having a first engaging section and a second engaging section provided at an upper portion thereof; A recliner mounted on the seat back frame and having one end pivotally hinged to the base bracket; A rotation support portion rotatably connected to the recliner and having a locking protrusion which is engaged with the first locking portion or the second locking portion on one side and the connection groove is provided on the other side; A link member rotatably connected to the recliner, connected to a link member adjusting cable extending and retracted by the switching unit at an end thereof, and having a connecting protrusion for entering and exiting the connecting groove at one side thereof; And a drive unit for rotating the recliner in which the engagement state of the rotation support portion is released through the control portion in the forward direction or the reverse direction.

At this time, the linking protrusion of the link member is rotated while the link member is rotated as the link member adjusting cable is pulled, pushing the rotation preventing portion in a state of being inserted into the connection groove of the rotation support portion, It is possible to disengage the latching projection of the upwardly projecting portion from the first latching portion or the second latching portion.

The switching unit may include: an actuator that is operated by the control unit to expand and contract the lever member adjusting cable provided at one side; A fixing bracket fixed to the rear seat; And a lever member adjusting cable connected to the lever member adjusting cable at one end thereof while being pivotally connected with the link member adjusting cable at the other end thereof in accordance with the expansion and contraction of the lever member adjusting cable, And a lever member for expanding and contracting the lever member.

The lever member may include: a first extension protrusion to which the link member adjustment cable is connected; And a second extension protrusion to which the link member adjustment cable and another link member adjustment cable are connected.

At this time, it is preferable that the first extending protrusion and the second extending protrusion are formed symmetrically with respect to each other, and are symmetrically moved according to the rotation of the lever member.

The link member control cable may include an external cable; And an inner cable stretchable from an end of the outer cable.

In addition, the fixing bracket may be provided with at least one fixing groove for fixing one end of the outer cable of the link member adjusting cable so that the inner cable can be expanded or contracted only within a predetermined range.

The fixing bracket may further include at least one stopper for interrupting a turning path of the lever member to limit a rotation angle of the lever member.

The switching unit may further include an actuator bracket fixed to the rear seat and to which the actuator is fixed.

The lever member adjustment cable may include an external cable; And an inner cable stretchable from an end of the outer cable.

The actuator bracket may be provided with at least one fixing groove for fixing one end of the outer cable of the lever member adjusting cable so that the inner cable can be expanded or contracted only within a predetermined range.

The driving unit includes: a fixed gear fixed to the base bracket; A motor that is integrally connected to the recliner and generates driving force through an applied power source; And a rotary gear fixed to the rotary shaft of the motor and engaged with the fixed gear and rotated by the driving force of the motor to rotate the recliner while moving along the fixed gear.

The controller may include: a controller for operating the actuator and the motor; And a switch for transmitting a signal to the controller to control the actuator and the motor.

The switch includes a first button for transmitting an actuating signal for actuating the actuator to the controller and a forward rotation signal for forward rotation of the rotation axis of the motor; And a second button for transmitting an operation signal for operating the actuator to the controller and a reverse rotation signal for rotating the rotation axis of the motor.

On the other hand, the controller controls the internal cable of the lever member adjusting cable so as to complete the folded state of the seatback frame through the switch, or to complete the state in which the folded state of the seatback frame has been reversely un- It is preferable to operate the actuator so as to achieve the unlocked state.

According to the rear seat folding apparatus for a vehicle according to the present invention, since no external force is required by the user by folding or unfolding the seat back of the rear seat automatically through the folding means using the transmission system, the elderly person, the child, The seatback of the rear seat can be easily folded or unfolded without difficulty.

The user releases the engagement state of the rotation support portion for preventing the rotation of the seat back via the switch operation mode so that the seat back can be rotated, and the seat back is automatically rotated in one direction to achieve a folded state So that the unfolded restored state can be achieved. That is, since the seat back of the rear seat is automatically folded or unfolded through the switch operation mode, the user does not have to know the passive method for folding or unfolding the seat back of the rear seat as in the conventional manner, Can be improved.

Further, since the seat back can be folded and unfolded using a single folding means that operates according to the signal of the control portion, the cost can be reduced by reducing the number of electric parts compared with the conventional one, It is possible to minimize the installation space according to the compactness, and it is very easy to install the folding means.

1 is a view showing a rear seat for a vehicle according to the present invention.
2 is a view showing the whole of a rear seat folding device for a vehicle according to the present invention.
Fig. 3 is a view showing an operating state of releasing the locking state of the rotation support portion and rotating the recliner. Fig.
4 is a view showing an operating state in which the recliner is folded by the drive unit.
5 is a view showing an operating state in which the link member adjusting cable is expanded and contracted by a lever member which is rotated as the lever member adjusting cable is stretched.

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

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the scope of the invention, .

The rear seat folding apparatus 100 for a vehicle according to the present invention includes a folding unit 110, a switching unit 130, and a control unit 150 as shown in FIG.

The folding means 110 has a structure in which the seatback frame 30 is rotatably connected to the seat cushion frame 20 of the rear seat 10 to fold or unfold the seatback in which the seatback frame 30 is embedded. Includes a base bracket 111, a recliner 113, a rotation support portion 115, a link member 117, and a drive unit 119 as shown in Figs.

The base bracket 111 may be mounted on one side of the seat cushion frame 20 of the rear seat 10 and integrally fixed thereto as shown in Fig. Preferably, the base bracket 111 may be mounted to the seat cushion frame 20 through a bolting method or the like.

As shown in FIG. 3, the base bracket 111 may have a first latching section 111a and a second latching section 111b at one end, preferably at an upper portion thereof.

The first latching section 111a and the second latching section 111b are constituent elements to which a latching protrusion 115a of the rotation and deflection section 115 to be described later is caught. The first latching section 111a, for example, The second brackets 111b may be formed in a groove shape at predetermined intervals along the upper surface of the base bracket 111 as shown in FIG. have. However, as described above, the shapes of the first latching section 111a and the second latching section 111b are not limited to those of the first latching section 111a and the second latching section 111b, Or may be formed in a different shape such as a hook shape so that the latching protrusion 115a of the rotation support portion 115 to be described later can be hooked.

When the latching protrusion 115a of the rotation stopper 115 is hooked on the first stopping section 111a, the folding of the seatback frame 30 can be prevented. In the second stopping section 111b, Unfolding of the seatback frame 30 can be prevented when the latching protrusion 115a of the pivotal support portion 115 to be described later is caught. A detailed description of the latching mechanism and latching method will be described later.

The recliner 113 may be mounted on one side of the seat back frame 30 of the rear seat 10 and integrally fixed as shown in Fig. Preferably, the recliner 113 may be mounted to the seatback frame 30 through a bolting method or the like.

3, the recliner 113 can be hingedly connected to the base bracket 111 at one end, preferably at a lower portion thereof, as described above.

Accordingly, the recliner 113 can rotate with respect to an axis connected to the hinge, in a state of being integrated with the seatback frame 30. That is, the seat back having the seat back frame 30 can be folded or unfolded according to the rotation of the recliner 113.

3, the rotation support portion 115 may be rotatably hinged to one side of the recliner 113. [ In detail, the rotation / deflection portion 115 is disposed on the upper side of the base bracket 111 described above, and is rotated based on the axis connected to the hinge.

As shown in FIG. 3, the pivot 115 may have a locking protrusion 115a at one end thereof.

The locking protrusion 115a may be formed in the form of a saw tooth which is engaged with the first locking section 111a or the second locking section 111b and which is interlocked with the first locking section 111a, for example. However, the shape of the locking protrusion 115a is not limited as described above. Instead, the shape of the locking protrusion 115a may be a shape protruding from one of the teeth of the first locking section 111a or complementary to the second locking protrusion 115a As shown in FIG.

As shown in FIG. 3, the pivot 115 may have a connection groove 115b on the other side, that is, on the upper side.

The connection groove 115b is connected to the connection protrusion 117a of the link member 117 to be described later so as to push up the rotation support portion 115. The connection groove 115b preferably has a groove shape in which one side of the rotation support portion 115 is open, May be formed in a shape corresponding to the shape of the coupling protrusion 117a of the link member 117. [

Here, the rotation support portion 115 has a structure for preventing the rotation of the seatback frame 30 integrally formed with the recliner 113 as described above. The pivotal movement portion 115 is locked in the first engagement portion 111a or the second engagement portion 111b by the link member 117 to be described later so as to prevent the rotation of the recliner 113 And the engaging state is canceled by the link member 117 so that the recliner 113 can be rotated. The detailed description will be made in conjunction with the operating structure of the link member 117. [0100]

The link member 117 may be rotatably hinged to one side of the recliner 113 as shown in Fig. Specifically, the link member 117 is disposed on the upper side of the above-described rotation support portion 115, and is rotated based on an axis connected to the hinge.

The link member 117 can be connected to the end of the link member adjustment cable 120 as shown in Fig. For example, the link member adjustment cable 120 may be constructed of a conventional throttle cable.

2 to 5, the link member regulating cable 120 includes an outer cable 121 for providing a sheath and an inner cable 123 for expanding and retracting in the outer cable 121 do. At this time, the inner cable 123 is provided on both sides of the outer cable 121 so as to be expandable and contractible, and is moved along the one direction. That is, when the inner cable 123 provided at one side of the outer cable 121 is moved in one direction, the inner cable 123 provided at the other side moves in one direction.

The coupling relationship and the operating relationship between the link member 117 and the link member adjustment cable 120 will be described in more detail below based on the structure of the link member adjustment cable 120 described above.

An end portion of the inner cable 123 provided at one side of the inner cable 123 of the link member adjustment cable 120 is connected to an end portion of the link member 117 as shown in Fig. Accordingly, the link member 117 rotates about the hinged shaft as the inner cable 123 of the link member adjustment cable 120 is expanded and contracted.

3, the link member 117 may be provided with a coupling protrusion 117a, which is inserted into and withdrawn from the coupling groove 115b of the rotation support portion 115 described above.

The coupling protrusions 117a may be formed in a shape corresponding to the shape of the coupling groove 115b of the rotation preventing portion so as to be able to be inserted into and out of the coupling groove 115b to push up the rotation supporting portion 115 have. The linking protrusion 117a can be moved into and out of the connection groove 115b while rotating and simultaneously rotating the linking member 117. [

Hereinafter, an operation structure in which the locking state of the rotation support portion 115 is released by the link member 117 will be described in detail with reference to the drawings.

3 (a), the locking protrusion 115a of the rotation support portion 115 is disposed in the first locking portion 111a of the base bracket 111, and at this time, The locking protrusion 117a presses a part of the rotation support portion 115 so that the locking protrusion 115a is caught by the first locking portion 111a. That is, FIG. 3 (a) shows a locked state in which the recliner 113 is prevented from being folded.

 In this case, as shown in FIG. 3 (b), the inner cable 123 of the link member adjustment cable 120 is pulled to move the link member 117 in one direction, that is, in the direction in which the connection groove 115b is formed . At the same time, the coupling protrusion 117a of the rotating link member 117 is inserted into the coupling groove 115b to support the rotation support portion 115, and further pushes the rotation support portion 115 upward. As a result, the latching protrusion 115a of the rotation support portion 115 is separated from the first latching portion 111a so that the latching state can be released. Therefore, the reclining mechanism 113, which has been locked by the rotation support portion 115, can be rotated, i.e., folded.

3 (c), the locking projection 115a of the rotation support portion 115 is disposed in the second engagement portion 111b of the base bracket 111, and at this time, The locking protrusion 117a can press a part of the rotation support portion 115 to establish a locking state in which the locking protrusion 115a is caught by the second locking portion 111b. That is, FIG. 3 (c) shows a locked state in which unlocking of the recliner 113 is prevented.

3 (b), the inner cable 123 of the link member adjustment cable 120 is pulled to pull the link member 117 in one direction, that is, the link groove 115b is formed Direction. At the same time, the coupling protrusion 117a of the rotating link member 117 is inserted into the coupling groove 115b to support the rotation support portion 115, and further pushes the rotation support portion 115 upward. As a result, the locking projection 115a of the rotation support portion 115 is separated from the second locking portion 111b so that the locking state can be released. Therefore, the reclining mechanism 113, which has been locked by the rotation and deflection portion 115, can be rotated, that is, can be unfolded.

The drive unit 119 includes a fixed gear 119a, a motor 119b and a rotary gear 119c as shown in Figs.

The fixed gear 119a is a gear having protrusions formed at regular intervals on the disk-shaped outer peripheral surface as shown in FIG. 4, and may preferably be a spur gear. The fixed gear 119a may be fixed to the base bracket 111. [ At this time, the fixed gear 119a may be integrally fixed to the base bracket 111 while being connected to a separate bracket.

The motor 119b may be integrally connected to the above-described recliner 113 as shown in Fig. At this time, the motor 119b may be integrally fixed to the recliner 113 in a state of being connected to a separate bracket. The motor 119b is configured to generate a driving force through an applied power source and can transmit the driving force through a rotating gear 119c to be described later to rotate the recliner 113. The rotating shaft 119c.

As shown in FIG. 4, the rotary gear 119c is a gear having protrusions formed at regular intervals on a disk-shaped outer circumferential surface, preferably a spur gear. In detail, the rotary gear 119c may be formed to have the same size as the fixed gear 119a or may be formed to be small, but may be formed relatively small in the present invention.

The rotary gear 119c is fixed to the rotary shaft of the motor 119b and meshed with the fixed gear 119a. The rotary gear 119c can move along the outer peripheral surface of the fixed gear 119a as it rotates by the driving force of the motor 119b.

Here, an operating structure in which the recliner 113 is rotated by the drive unit 119 will be described in detail with reference to the drawings.

First, when power is supplied to the motor 119b, a driving force is generated to rotate the rotation shaft in the positive direction, and the rotation gear 119c rotates in the normal rotation direction in association with the rotation. At this time, since the rotary gear 119c is engaged with the fixed gear 119a, the rotary gear 119c moves along the outer peripheral surface of the fixed gear 119a while rotating. Accordingly, the recliner 113 is rotated by the drive unit 119 in the state as shown in Fig. 4 (b) in the state as shown in Fig. 4 (a). Therefore, the recliner 113 can be in a folded state.

When power is applied to the motor 119b, a driving force is generated to rotate the rotation shaft in the reverse rotation direction, and the rotation gear 119c rotates in the reverse rotation direction in conjunction with the rotation. At this time, since the rotary gear 119c is engaged with the fixed gear 119a, the rotary gear 119c moves along the outer peripheral surface of the fixed gear 119a while rotating. Thus, the recliner 113 is rotated by the drive unit 119 in the state as shown in Fig. 4 (a) in the state as shown in Fig. 4 (b). Therefore, the recliner 113 can be unfolded.

The folding unit 110 including the above-described structure can automatically fold or unfold the seatback in which the seatback frame 30 is embedded.

The switching unit 130 is configured to release the engagement of the rotation support portion 115 locked in the locked state to prevent the rotation of the seatback frame 30 so that the seatback frame 30 can be rotated. And an actuator 131, a fixing bracket 133, and a lever member 135 as shown in Fig.

The actuator 131 is configured to operate to expand and contract the internal cable 143 of the lever member adjustment cable 140 to be described later and may be constituted by a prime mover using, for example, electricity, hydraulic pressure, compressed air, May be configured as a prime mover using fluid energy.

The actuator 131 may be provided with a lever member adjusting cable 140 on one side as shown in FIG. For example, the lever member adjustment cable 140 may be constituted by a throttle cable.

2 and 5, the lever member adjusting cable 140 includes an outer cable 141 for providing a jacket and an inner cable 143 for being extendable and retractable in the outer cable 141 do. At this time, the inner cable 143 can be expanded or contracted according to the operation of the actuator 131 described above.

The actuator 131 may be mounted on any one of the seat cushion frame 20 or the seatback frame 30 of the rear seat 10. In the present invention, the actuator 131 may be mounted on the seatback frame 30 .

The switching unit 130 may further include an actuator bracket 137 fixed to the rear seat 10 and to which the actuator 131 is fixed.

The actuator bracket 137 is fixed to the seatback frame 30 of the rear seat 10 as shown in Figs. 2 and 5, and has an end portion on one side of the outer cable 141 of the lever member adjusting cable 140, And at least one fixing groove 137a to which the end is connected.

5, the fixing groove 137a is formed at a portion of the actuator bracket 137 where the actuator bracket 137 is bent so that the end of the outer cable 141 of the lever member adjusting cable 140 can be fitted and fixed, . ≪ / RTI > The fixing groove 137a can firmly fix the outer cable 141 of the lever member adjusting cable 140 so that the inner cable 143 is retracted from the fixed outer cable 141 within a certain range .

The fixing bracket 133 may be fixed to the seat back frame 30 of the rear seat 10 as shown in Figs. At this time, the fixing bracket 133 may be disposed below the actuator 131 or the actuator bracket 137 described above.

The fixing bracket 133 may be provided with at least one fixing groove 133a to which the end of the outer cable 121 of the link member adjusting cable 120 is fixed.

5, the fixing groove 133a is formed at a portion where the fixing bracket 133 is bent so that the end of the outer cable 121 of the link member adjusting cable 120 is fitted and fixed, . ≪ / RTI > It is preferable that the fixing groove 133a is composed of a plurality of fixing grooves 133a so that the ends of the outer cable 121 of the other link member adjusting cable 120 connected to the lever member 135 to be described later can be fitted and fixed. The fixing groove 133a can firmly fix the outer cable 121 of the link member adjusting cable 120 so that the inner cable 123 can be retracted from the fixed outer cable 121 within a certain range .

The fixing bracket 133 may further include at least one stopper 133b for blocking the rotation path of the lever member 135 and limiting the rotation angle of the lever member 135. [

As shown in FIG. 5, one end of the fixing bracket 133 is bent so that the stopper 133b cuts off the rotation path of the lever member 135. As shown in FIG. The stopper 133b can limit the turning radius of the lever member 135 and adjust the stretching range of the link member adjusting cable 120 or the lever member adjusting cable 140 described above.

The lever member 135 may be hingedly connected to one side of the above-described fixed bracket 133 as shown in FIG. Specifically, the lever member 135 is disposed at a lower portion of the actuator 131 described above, particularly at the lower portion of the lever member adjustment cable 140 described above, and is pivoted on the basis of an axis connected to the hinge.

The lever member 135 can be connected to the lever member adjustment cable 140 at one end as shown in FIG. To be more specific, one end of the inner cable 143 of the lever member adjustment cable 140 is connected to one end of the lever member 135. [ Accordingly, the lever member 135 rotates about the hinged shaft as the inner cable 143 of the lever member adjustment cable 140 is expanded and contracted.

The lever member 135 may be connected to the link member adjustment cable 120 at the other end as shown in FIG. More specifically, one end of the inner cable 143 of the link member adjustment cable 120 is connected to the other end of the lever member 135. [ The lever member 135 can be rotated by the lever member adjustment cable 140 described above and at the same time the internal cable 123 of the link member adjustment cable 120 can be stretched and contracted.

Here, the operating structure of the lever member 135 will be described in detail with reference to the drawings.

Basically, the lever member 135 is bent by the inner cable 143 extended from the outer cable 141 of the lever member adjustment cable 140 by the actuator 131, as shown in Fig. 5 (a) Downward direction.

5B, the lever member 135 is connected to the outer cable 141 of the lever member adjusting cable 140 by the actuator 131 by the inner cable 143 pulled by the outer cable 141, It is possible to obtain a state of being raised upward. The inner cable 123 of the link member adjustment cable 120 connected to the other side of the lever member 135 is pulled along the direction of rotation of the lever member 135 to move the outer cable 121 of the link member adjustment cable 120, As shown in FIG. Thus, when the inner cable 123 provided at one side of the link member adjustment cable 120 is pulled as shown in FIG. 5 (b), at the same time, as shown in FIG. 3 (a) or 3 (c) The inner cable 123 provided on the other side of the link member adjustment cable 120 is pulled in the direction of the outer cable 121.

The lever member 135 includes a first extension protrusion 135a to which the link member adjustment cable 120 is connected, as shown in FIG. And a second extension protrusion 135b to which the link member adjustment cable 120 and the other link member adjustment cable 120 are connected.

5, the first extension protrusion 135a is formed in the form of a protrusion vertically protruding from the other longitudinal side of the lever member 135, (123) end is connected. The first extension projection 135a moves together with the lever member 135 in the rotation direction of the lever member 135 when the lever member 135 rotates. The first extension protrusion 135a can expand and contract the inner cable 123 of the link member adjustment cable 120 as the lever member 135 rotates.

5, the second extension protrusion 135b is formed in the shape of a protrusion vertically protruding from the other side in the longitudinal direction of the lever member 135, and the link member adjustment cable 120, The end of the inner cable 123 of the member control cable 120 is connected. The second extension projection 135b moves together with the lever member 135 in the rotation direction of the lever member 135 when the lever member 135 rotates. The second extension protrusion 135b can expand and contract the inner cable 123 of the other link member adjustment cable 120 as the lever member 135 rotates.

 The first extending protrusion 135a and the second extending protrusion 135b are formed symmetrically with respect to each other. Preferably, the first extending protrusion 135a protrudes from the upper portion of the other side of the lever member 135, The extending projection 135b is protruded to the lower side of the other side of the lever member 135 arranged to face the first extending projection 135a. Accordingly, the first extending protrusion 135a and the second extending protrusion 135b can be symmetrically moved with respect to each other in accordance with the rotation of the lever member 135. [

The control unit 150 controls the switching unit 130 to release the hooking state of the rotation support unit 115 and controls the folding unit 110 to rotate the seatback frame 30. In this case, And includes a controller 151 and a switch 153 as shown in Fig.

The controller 151 can be mounted in the interior of the vehicle, preferably the seat back frame 30 of the rear seat 10. [ The controller 151 may be configured as a controller that operates the actuator 131 and the motor 119b of the drive unit 119 described above. The controller 151 may be connected to the actuator 131 and the drive unit 119 in a wired or wireless communication manner to operate the actuator 131 and the drive unit 119. The controller 151 can operate the actuator 131 or operate the motor 119b of the drive unit 119 in accordance with a signal transmitted through a switch 153 to be described later.

On the other hand, the controller 151 completes the folded state of the seatback frame 30 through the switch 153, which will be described later, or completes the polled state of the unbacked frame 30, The actuator 131 can be operated so that the inner cable 143 of the member adjustment cable 140 is in a loosened state as shown in Fig. 5 (a).

The controller 151 may further include a sensing sensor for sensing a folding state of the seatback frame 30 or sensing a state where unfolding of the seatback frame 30 is completed. Accordingly, the controller 151 can easily sense the folded state and the unfolded state of the seatback frame 30 through the detection sensor, thereby automatically actuating the actuator 131 to release the lever member adjustment cable 140, So that the inner cable 143 of the connector can be released.

The switch 153 transmits a signal to the controller 151 to control the actuator 131 and the motor 119b. The switch 153 may be installed in the interior of the vehicle or may be provided as a separate remote controller have. The switch 153 may be connected by wire or wireless communication so as to transmit a signal to the controller 151 to actuate the actuator 131 and the motor 119b of the drive unit 119. [

The switch 153 controls the actuator 131 and the drive unit 119 to fold or unfold the seatback in which the seatback frame 30 is embedded. As shown in FIG. 2, A first button 153a and a second button 153b.

The first button 153a transmits an operation signal for operating the actuator 131 and a forward rotation signal for rotating the motor 119b of the drive unit 119 in the normal rotation direction to the controller 151 described above. The first button 153a may be configured as a control device for folding the seat back frame 30, and an operating structure for folding the seat back with the seat back frame 30 therein will be described below.

First, the controller 150 is turned on by pressing the first button 153a. At this time, the controller 150 transmits an operation signal to the controller 151 to operate the actuator 131 through the first button 153a.

In this case, the actuator 131 that receives the operation signal is operated to pull the inner cable 143 of the lever member adjustment cable 140 as shown in FIG. 5 (b) to rotate the lever member 135. At this time, the inner cable 123 provided at one side of the link member adjustment cable 120 connected to the lever member 135 to be rotated is pulled and at the same time, the link member adjustment cable 120 The inner cable 123 provided on the other side of the link member 117 is pulled to rotate the link member 117. 3 (b), the linking protrusion 117a of the link member 117 is inserted into the connection groove 115b of the rotation support portion 115 and supported by the rotation support portion 115, The engagement protrusion 115a of the rotation support portion 115 engaged with the first engagement portion 111a of the base bracket 111 is separated from the first engagement portion 111a to release the engagement state. That is, the locked state of the reclining mechanism 113 locked by the rotation and falling portion 115 is released, and the seatback frame 30, which is integrated with the reclining mechanism 113, is rotatable. That is, the seat back in which the seat back frame 30 is embedded is in a foldable state.

At the same time, the control unit 150 transmits a forward rotation signal for forward rotation of the rotation shaft of the motor 119b of the drive unit 119 to the drive unit 119 via the first button 153a.

 In this case, power is supplied to the drive unit 119 that receives the forward rotation signal, and the rotation axis of the motor 119b operated thereby is rotated in the forward rotation direction, that is, the direction in which the seatback frame 30 is folded. More specifically, the rotary gear 119c provided on the rotary shaft of the motor 119b moves along the outer peripheral surface of the fixed gear 119a, and the recliner 113, which is integrated with the motor 119b and the motor 119b, And is rotated in the rotating direction to form a state as shown in FIG. 4 (b). That is, the seatback frame 30 integral with the recliner 113 is folded.

Therefore, the seat back incorporated with the seat back frame 30 can be automatically folded through the first button 153a.

The second button 153b transmits an operation signal for operating the actuator 131 and a reverse rotation signal for rotating the motor 119b of the drive unit 119 in the reverse rotation direction to the controller 151 described above. The second button 153b can be configured as a control device for unfolding the seatback frame 30 and an operation structure for unfolding the seatback with the seatback frame 30 will be described as follows .

First, the controller 150 is turned on by pressing the second button 153b. At this time, the controller 150 transmits an operation signal for operating the actuator 131 to the controller 151 through the second button 153b.

In this case, the actuator 131 that receives the operation signal is operated to pull the inner cable 143 of the lever member adjustment cable 140 as shown in FIG. 5 (b) to rotate the lever member 135. At this time, the inner cable 123 provided at one side of the link member adjusting cable 120 connected to the lever member 135 to be rotated is pulled, and at the same time, as shown in FIG. 3 (c) The provided inner cable 123 is pulled to rotate the link member 117. The linking protrusion 117a of the link member 117 to be rotated is inserted into and supported by the connecting groove 115b of the rotation support portion 115 so that when the rotation support portion 115 is pushed up, The engagement protrusion 115a of the rotation support portion 115 engaged with the second engagement portion 111b is separated from the second engagement portion 111b to release the engagement state. That is, the locked state of the reclining mechanism 113 locked by the rotation and falling portion 115 is released, and the seatback frame 30, which is integrated with the reclining mechanism 113, is rotatable. That is, the seatback in which the seatback frame 30 is embedded is in a state capable of unfolding.

At the same time, the control unit 150 transmits a reverse rotation signal to the drive unit 119, which rotates the rotation shaft of the motor 119b of the drive unit 119 forward through the second button 153b.

 In this case, power is supplied to the drive unit 119 that receives the reverse rotation signal, and the rotation axis of the motor 119b operated thereby is rotated in the reverse rotation direction, that is, the direction in which the seatback frame 30 is unfolded. More specifically, the rotary gear 119c provided on the rotary shaft of the motor 119b moves along the outer peripheral surface of the fixed gear 119a, and the recliner 113 integral with the motor 119b and the motor 119b is rotated And is rotated in the rotating direction to form a state as shown in FIG. 4 (a). That is, the seatback frame 30 integral with the recliner 113 is unfolded.

Accordingly, the unbacked sheet-back can be automatically unfolded through the second button 153b.

The rear seat folding apparatus 100 for a vehicle according to the present invention controls the folding means 110 and the switching unit 130 using the transmission system through the control unit 150 having the above- By folding or unfolding the seat back automatically, it is possible to easily fold or unfold the seat back of the rear seat 10 without the need for an external force by the user at all.

100: vehicle rear seat folding device 110: folding means
111: Base bracket 113: Recliner
115: Rotary side branch 117: Link member
119: drive unit 120: link member adjustment cable
130: switching part 131: actuator
133: Fixing bracket 135: Lever member
140: lever member adjustment cable 150:
151: controller 153: switch

Claims (13)

Folding means for pivotally connecting a seat back frame to a seat cushion frame of a rear seat so as to fold or unfold the seat back in which the seat back frame is built;
A switching unit for releasing a locking state of the rotation support member locked in a locked state to prevent rotation of the seatback frame to enable rotation of the seatback frame; And
And a control unit controlling the switching unit to release the engagement state of the rotation support unit and then controlling the folding unit to rotate the seatback frame.
2. The folding device according to claim 1,
A base bracket mounted on the seat cushion frame and provided with a first engaging section and a second engaging section at an upper portion thereof;
A recliner mounted on the seat back frame and having one end pivotally hinged to the base bracket;
A rotation support portion rotatably connected to the recliner and having a locking protrusion which is engaged with the first locking portion or the second locking portion on one side and the connection groove is provided on the other side;
A link member rotatably connected to the recliner, connected to a link member adjusting cable extending and retracted by the switching unit at an end thereof, and having a connecting protrusion for entering and exiting the connecting groove at one side thereof; And
And a driving unit that rotates the recliner in which the locked state of the rotation support portion is released through the control unit in the forward direction or the reverse direction.
The connector according to claim 2,
The link member is rotated and simultaneously rotated as the link member adjusting cable is pulled up to push up the rotation preventing portion while being inserted into the connection groove of the rotation support portion, And the second engagement section is separated from the second engagement section so as to release the engagement.
The apparatus of claim 2,
An actuator that is operated by the control unit to expand and contract the lever member adjustment cable provided at one side;
A fixing bracket fixed to the rear seat; And
The lever member adjusting cable is pivotally connected to the fixing bracket so as to be rotatable. The lever member adjusting cable is connected to one end of the link member adjusting cable. And a lever member for retracting and retracting the vehicle.
5. The lever apparatus according to claim 4,
A first extension protrusion to which the link member adjustment cable is connected; And
And a second extension protrusion to which the link member adjustment cable and another link member adjustment cable are connected,
Wherein the first extending projection and the second extending projection are formed symmetrically with respect to each other and are symmetrically moved with respect to each other in accordance with rotation of the lever member.
The method according to claim 4 or 5,
The link member adjustment cable includes:
External cable; And
And an inner cable that is provided so as to be able to extend and retract from an end of the outer cable,
The fixing bracket includes:
And at least one fixing groove for fixing one end of the outer cable of the link member adjusting cable so that the inner cable can be expanded or contracted only within a predetermined range.
[7] The apparatus of claim 6,
And at least one stopper for blocking a turning path of the lever member to limit a rotation angle of the lever member.
5. The apparatus according to claim 4,
And an actuator bracket fixed to the rear seat and to which the actuator is fixed.
9. The method of claim 8,
Wherein the lever member adjustment cable comprises:
External cable; And
And an inner cable that is provided so as to be able to extend and retract from an end of the outer cable,
The actuator bracket includes:
And at least one fixing groove for fixing one end of the outer cable of the lever member adjusting cable so that the inner cable can be expanded or contracted only within a predetermined range.
5. The apparatus according to claim 4,
A fixed gear fixedly installed on the base bracket;
A motor that is integrally connected to the recliner and generates driving force through an applied power source; And
And a rotary gear fixed to the rotary shaft of the motor and engaged with the fixed gear and rotated by the driving force of the motor to rotate along the fixed gear to rotate the recliner, Device.
11. The apparatus according to claim 10,
A controller for operating the actuator and the motor; And
And a switch for transmitting a signal to the controller to control the actuator and the motor.
12. The apparatus of claim 11,
A first button for transmitting an operation signal for operating the actuator to the controller and a forward rotation signal for forward rotation of the rotation axis of the motor; And
And a second button for transmitting an actuating signal for actuating the actuator to the controller and a reverse rotation signal for reversing the rotation axis of the motor.
13. The system of claim 12,
Wherein the actuator is configured to release the internal cable of the lever member adjusting cable to a released state when the folded state of the seat back frame is completed through the switch or when the folded state of the seatback frame is completed, And the rear seat folding device operates the rear seat folding device.

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