KR102048974B1 - Folding device for rear seat of vehicle - Google Patents

Abstract

The present invention relates to a rear seat folding apparatus for a vehicle, comprising: folding means for folding or unfolding a seat back in which the seat back frame is embedded by rotatably connecting a seat back frame to a seat cushion frame of a rear seat; A switching unit configured to release the locking state of the rotation preventing unit locked in the locked state to prevent the seat back frame from rotating, thereby allowing the seat back frame to be rotatable; And a control unit controlling the folding unit to rotate the seat back frame after releasing the locking state of the anti-rotation unit by controlling the switching unit. According to the present invention, the seat back of the rear seat can be automatically folded or unfolded by controlling the folding means and the switching unit using the electric method through the control unit.

Description

Vehicle rear seat folding device {FOLDING DEVICE FOR REAR SEAT OF VEHICLE}

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 seat back through an electric system.

In general, only one row of rear seats is provided at the rear of the front seat, but in the case of a passenger vehicle including an RV vehicle, two to three rows or more of rear seats are installed. In addition, in order to utilize as a space for loading luggage without passengers boarding the rear seats of the second to third row, a separate folding device is installed in the second to third row rear seats. Thus, by operating the folding device to the seat back is folded forward and in close contact with the seat cushion, the back of the seat back, that is, the seat back upper surface of the folded state is a luggage compartment leading to the trunk space and one.

Such a prior art related to the rear seat has been disclosed in Korean Patent Publication No. 10-0448117 (2004.09.01) "rear seat folding structure for automobiles". The rear seat according to the prior art is a configuration for easily folding and fixing the rear seat cushion and the rear seat back, fold the rear seat back into the rear seat cushion, and again folding the rear seat cushion to be located immediately behind the front seat back, the space behind Is used as a loading space.

However, the conventional rear seat requires a physical external force by the user because the manual manual operation of the user is required to fold the rear seat back or to restore the folded rear seat back to the unfolded state. That is, the elderly, children, or the disabled who have relatively weak physical strength as compared to the general adult has a problem that it is very difficult to fold or unfold the conventional rear seat.

In addition, the conventional rear seat has to be folded or unfolded the rear seatback according to a predetermined method, so it is very difficult for a user who is new to the method of folding or unfolding the seatback to perform this procedure to fold or unfold the seatback. There was a difficult problem.

Korean Patent Registration No. 10-0448117 (2004.09.01) "Rear seat folding structure for automobile"

An object of the present invention is to provide a rear seat folding apparatus for automobiles, which can be made in both a structure for folding the seat back of the rear seat and an unfolding structure for the electric method.

In order to achieve the above object, a vehicle rear seat folding apparatus according to the present invention comprises: folding means for folding or unfolding a seat back in which the seat back frame is embedded by rotatably connecting a seat back frame to a seat cushion frame of a rear seat; A switching unit configured to release the locking state of the rotation preventing unit locked in the locked state to prevent the seat back frame from rotating, thereby allowing the seat back frame to be rotatable; And a control unit which releases the locking state of the anti-rotation unit by controlling the switching unit and then controls the folding means to rotate the seat back frame.

The folding means may include: a base bracket mounted to the seat cushion frame and provided with a first catching section and a second catching section thereon; A recliner mounted on the seat back frame and having one end pivotally connected to the base bracket; A rotation prevention part rotatably connected to the recliner and provided with a locking protrusion on the first catching section or the second catching section on one side, and a connecting groove provided on the other side; A link member rotatably connected to the recliner, a link member control cable stretched by the switching unit connected to an end thereof, and a link member provided at one side thereof with a connection protrusion entering and exiting the connection groove; And a driving unit for rotating the recliner in a forward or reverse direction, through which the locking state of the anti-rotation part is released through the control unit.

At this time, the linking projection of the link member, the link member is rotated as the link member control cable is rotated at the same time as the rotation preventing portion in the state inserted into the connection groove of the anti-rotation part while pushing the rotation prevention part The locking projection may be released by separating the locking projection from the first locking section or the second locking section.

The switching unit may include: an actuator configured to expand and contract the lever member control cable provided at one side by operating by the controller; A fixing bracket fixed to the rear seat; And the link member control cable is pivotally connected to the fixing bracket, the lever member control cable is connected to one end, and the link member control cable is rotated according to the expansion and contraction of the lever member control cable while the link member control cable is connected to the other end. It includes; a lever member for stretching.

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

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

And, the link member control cable, the external cable; And an inner cable provided to be stretchable from an end of the outer cable.

In addition, the fixing bracket, at least one fixing groove for fixing the one end of the outer cable of the link member control cable so that the inner cable is stretched only within a certain range; may be provided.

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

And, the lever member control cable, the external cable; And an inner cable provided to be stretchable from an end of the outer cable.

In addition, the actuator bracket may be provided with at least one fixing groove which fixes one end of the outer cable of the lever member control cable so that the inner cable is stretched only within a predetermined range.

And, the drive unit, a fixed gear fixed to the base bracket; A motor integrally connected with the recliner and generating a driving force through an applied power; And a rotating gear fixed to the rotating shaft of the motor to form a state engaged with the fixed gear and rotating by the driving force of the motor to move the recliner while moving along the fixed gear.

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

The switch may include: 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 rotating shaft 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 rotating shaft of the motor.

On the other hand, the controller, the internal cable of the lever member control cable is completed as the completion of the state in which the seat back frame is folded through the switch, or the state in which the seat back frame has completed the polled state is reversely unfolded It is preferable to operate the actuator to achieve an unlocked state.

According to the rear seat folding device for a vehicle according to the present invention, by folding or unfolding the seat back of the rear seat automatically by a folding means using an electric method, since the external force by the user is not required at all, the elderly, children, or disabled persons, etc. You can easily fold or unfold the seatback of the rear seat without effort.

Then, the user releases the locking state of the anti-rotation part that prevents the rotation of the seat back through a switch operation method to make the seat back rotatable, and automatically rotates the seat back in one direction to achieve the folded state. It can be rotated in the other direction to achieve an unfolded restoration state. That is, the seatback of the rear seat is automatically folded or unfolded through a switch operation method, so that the user does not need to know a manual method for folding or unfolding the seatback of the rear seat as in the prior art. Can be improved.

In addition, the seat back can be folded as well as unfolded using a single folding means operated according to a signal from the controller, thereby reducing the cost of the electric parts compared to the conventional method, and thereby reducing the cost of the electric parts. The installation space can be minimized according to the compactness, so the installation of the folding means is very easy.

1 is a view showing a vehicle rear seat according to the present invention.
2 is a view showing the entire vehicle rear seat folding apparatus according to the present invention.
3 is a view showing an operating state of rotating the recliner by releasing the locking state of the anti-rotation part.
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 control cable is stretched by the lever member rotated as the lever member control cable is stretched.

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

Unless otherwise defined, all terms in the specification are the same as the general meaning of the terms understood by those skilled in the art, and if the terms used herein conflict with the general meaning of the terms Is in accordance with the definitions used herein.

On the other hand, the configuration or system of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiment of the present invention, the same reference numerals are used throughout the specification the same components Indicates.

The vehicle rear seat folding apparatus 100 according to the present invention includes a folding means 110, a switching unit 130, and a controller 150 as shown in FIG. 1.

The folding means 110 is configured to fold or unfold the seatback in which the seatback frame 30 is embedded by rotatably connecting the seatback frame 30 to the seat cushion frame 20 of the rear seat 10. As shown in FIGS. 1 to 4, the base bracket 111, the recliner 113, the anti-rotation part 115, the link member 117, and the driving unit 119 are included.

The base bracket 111 may be mounted on one side of the seat cushion frame 20 of the rear seat 10 and fixed integrally as shown in FIG. 1. 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 be provided with a first catching section 111a and a second catching section 111b at an upper portion thereof.

The first catching section 111a and the second catching section 111b are components to which the catching protrusion 115a of the anti-rotation unit 115 to be described later is applied. For example, the first catching section 111a is shown in FIG. It is formed in the form of teeth along the upper surface of the base bracket 111 by a predetermined interval, or the second locking section 111b may be formed in the groove shape by a predetermined interval along the upper surface of the base bracket 111 as shown. have. However, as described above, the shape of the first catching section 111a and the second catching section 111b are not limited, and the shape of the first catching section 111a and the second catching section 111b are the same. Or it may be formed in the opposite form, it may be formed in other forms such as hook shape so that the locking projection 115a of the anti-rotation unit 115 to be described later.

Here, when the locking projection 115a of the anti-rotation unit 115 to be described later is caught in the first locking section 111a, the folding of the seat back frame 30 can be prevented, and the second locking section 111b When the locking protrusion 115a of the anti-rotation unit 115 to be described later is caught, the unfolding of the seat back frame 30 may be prevented. Detailed description of such a locking structure or a locking method will be described later.

As shown in FIG. 1, the recliner 113 may be mounted on one side of the seat back frame 30 of the rear seat 10 to be integrally fixed. Preferably, the recliner 113 may be mounted to the seat back frame 30 through a bolting method or the like.

As shown in FIG. 3, the recliner 113 may be rotatably hinged to the base bracket 111 described above, preferably at a lower portion thereof.

Accordingly, the recliner 113 can be rotated based on the hinged axis in an integral state with the seat back frame 30. That is, the seatback having the seatback frame 30 may be folded or unfolded according to the rotation of the recliner 113.

The anti-rotation unit 115 may be rotatably hinged to one side of the recliner 113 as shown in FIG. 3. In detail, the anti-rotation unit 115 is disposed on the upper side of the base bracket 111 described above, and rotates based on the hinged axis.

As shown in FIG. 3, the anti-rotation part 115 may be provided with a locking protrusion 115a at one end portion.

The catching protrusion 115a is a component that is caught by the first catching section 111a or the second catching section 111b described above. For example, the catching protrusion 115a may be formed in a sawtooth shape that meshes with the first catching section 111a. However, the shape of the locking protrusion 115a is not limited as described above, but the shape of the protrusion or the second locking protrusion 115a complementary to the teeth of one of the teeth of the first locking section 111a. It may be formed in the form of a protrusion having a.

As shown in FIG. 3, the anti-rotation part 115 may be provided with a connection groove 115b at the other side, that is, at an upper portion thereof.

The connection groove 115b is configured to be connected to the connection protrusion 117a of the link member 117 to be described later in order to push up the rotation preventing portion 115, and a groove shape in which one side of the rotation preventing portion 115 is opened. For example, it may be formed in a form corresponding to the form formed by the connecting projection 117a of the link member 117.

Here, the anti-rotation unit 115 forms a structure for preventing the rotation of the seat back frame 30 which is integral with the recliner 113 as described above. The anti-rotation unit 115 is locked to the first locking section 111a or the second locking section 111b by the link member 117 which will be described later to prevent the recliner 113 from rotating. In addition, the latched state is released by the link member 117 to allow the recliner 113 to be rotatable. A detailed description will be described together with the operation structure of the link member 117.

The link member 117 may be rotatably hinged to one side of the recliner 113 as shown in FIG. 3. In detail, the link member 117 is disposed on the upper side of the anti-rotation part 115 described above, and rotates based on a hinged axis.

Link member 117 is a link member control cable 120 may be connected to the end as shown in FIG. For example, the link member control cable 120 may be composed of a conventional throttle cable.

Here, the link member control cable 120 includes an outer cable 121 for providing an outer sheath as shown in FIGS. 2 to 5 and an inner cable 123 elastically provided inside the outer cable 121. do. At this time, the inner cable 123 is provided on both sides of the outer cable 121 to be stretchable, respectively, and is interlocked to move along one direction. That is, when the inner cable 123 provided on one side of the outer cable 121 is moved in one direction, the inner cable 123 provided on the other side is moved in one direction in conjunction with this.

Based on the above-described configuration of the link member control cable 120, the coupling relationship and the operating relationship of the link member 117 and the link member control cable 120 will be described in more detail as follows.

An end of the inner cable 123 provided on one side of the inner cable 123 of the link member control cable 120 is connected to the end of the link member 117 as shown in FIG. Accordingly, the link member 117 is rotated based on the hinged axis as the inner cable 123 of the link member control cable 120 is stretched.

As shown in FIG. 3, the link member 117 may be provided with a connection protrusion 117a that enters and exits the connection groove 115b of the aforementioned anti-rotation part 115 on one side.

The connection protrusion 117a may be formed to enter and exit the connection groove 115b in order to push up the anti-rotation part 115, and may be formed in a form corresponding to the shape of the connection groove 115b of the rotation prevention part. have. The connection protrusion 117a may be rotated at the same time as the link member 117 rotates and may enter and exit the connection groove 115b described above.

Here, the operation structure in which the locking state of the anti-rotation unit 115 is released by the link member 117 will be described in detail with reference to the accompanying drawings.

First, as shown in (a) of FIG. 3, the locking protrusion 115a of the anti-rotation part 115 is disposed in the first locking section 111a of the base bracket 111, and at this time, the link member 117 As the connecting protrusion 117a presses a part of the anti-rotation part 115, the locking protrusion 115a may achieve a locking state that is caught by the first locking section 111a. That is, (a) of FIG. 3 refers to a locked state in which folding of the recliner 113 is prevented.

 In this case, as shown in (b) of Figure 3 by pulling the inner cable 123 of the link member control cable 120 described above, the link member 117 in one direction, that is, in the direction in which the connection groove 115b is formed. Rotate At the same time, the connecting projection 117a of the rotating link member 117 is inserted into the connecting groove 115b to support the anti-rotation part 115 and further pushes up the anti-rotation part 115. Accordingly, the locking protrusion 115a of the anti-rotation unit 115 may be spaced apart from the first locking section 111a to release the locking state. Therefore, the recliner 113, which has been locked by the anti-rotation unit 115, may be in a rotatable state, that is, a state in which it can be folded.

Then, as shown in (c) of FIG. 3, the locking projection 115a of the anti-rotation part 115 is disposed in the second locking section 111b of the base bracket 111, wherein the link member 117 The connection protrusion 117a may press a part of the anti-rotation part 115 to achieve a locked state such that the locking protrusion 115a is caught by the second locking section 111b. That is, (c) of FIG. 3 refers to a locked state in which unfolding of the recliner 113 is prevented.

In this case, as described above with reference to FIG. 3 (b), the link member 117 is pulled in one direction, that is, the connection groove 115b is formed by pulling the inner cable 123 of the link member control cable 120 described above. Rotate in the direction. At the same time, the connecting projection 117a of the rotating link member 117 is inserted into the connecting groove 115b to support the anti-rotation part 115 and further pushes up the anti-rotation part 115. Accordingly, the locking protrusion 115a of the rotation preventing unit 115 may be spaced apart from the second locking section 111b to release the locking state. Therefore, the recliner 113, which has been locked by the anti-rotation unit 115, may be in a rotatable state, that is, a state in which it can be unfolded.

The driving unit 119 includes a fixed gear 119a, a motor 119b and a rotating gear 119c as shown in FIGS. 2 and 4.

As shown in FIG. 4, the fixed gear 119a is a gear having protrusions formed at equal intervals on an outer circumferential surface of a disc shape, and preferably, may be configured as a spur gear. The fixed gear 119a may be fixed to the base bracket 111. In this case, the fixing gear 119a may be integrally fixed to the base bracket 111 in a state of being connected to a separate bracket.

The motor 119b may be integrally connected with the above-described recliner 113 as shown in FIG. 4. In this case, 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 the applied power, and can rotate the recliner 113 by transmitting the driving force through the rotary gear 119c to be described later. 119c).

As shown in FIG. 4, the rotary gear 119c is a gear in which protrusions are formed at equal intervals on the outer circumferential surface of a disk shape, and preferably may be a spur gear. In detail, the rotary gear 119c may be formed in the same size or smaller than the above-described fixed gear 119a, but may be formed relatively small in the present invention.

The rotary gear 119c is fixed to the rotating shaft of the motor 119b described above, and forms a state of being engaged with the fixed gear 119a. The rotary gear 119c may move along the outer circumferential surface of the fixed gear 119a as it rotates by the driving force of the motor 119b.

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

First, when power is applied to the motor 119b, a driving force is generated to rotate the rotation shaft in the forward direction, and the rotation gear 119c rotates in the forward rotation direction in conjunction with this. At this time, since the rotary gear 119c is engaged with the fixed gear 119a, the rotary gear 119c rotates and moves along the outer circumferential surface of the fixed gear 119a. Accordingly, the recliner 113 is rotated in the state as shown in FIG. 4B by the drive unit 119 in the state as shown in FIG. 4A. Thus, the recliner 113 can achieve a folded state.

In addition, when power is applied to the motor 119b, a driving force is generated to rotate the rotating shaft in the reverse rotation direction, and the rotation gear 119c rotates in the reverse rotation direction in conjunction with this. At this time, since the rotary gear 119c is engaged with the fixed gear 119a, the rotary gear 119c rotates and moves along the outer circumferential surface of the fixed gear 119a. Accordingly, the recliner 113 is rotated by the drive unit 119 in the state as shown in FIG. 4A in the state as shown in FIG. 4B. Thus, the recliner 113 may achieve an unfolded state.

As such, the seatback having the seatback frame 30 may be automatically folded or unfolded through the folding means 110 having the above-described configuration.

The switching unit 130 is configured to release the locking state of the anti-rotation unit 115, which is locked in a locked state to prevent the rotation of the seat back frame 30, so that the seat back frame 30 can be rotated. And an actuator 131, a fixing bracket 133, and a lever member 135 as shown in FIG. 5.

Actuator 131 is configured to operate to stretch the inner cable 143 of the lever member control cable 140 to be described later, for example, may be composed of a prime mover using electric, hydraulic, compressed air, etc., the present invention It can be configured as a prime mover using fluid energy.

The actuator 131 may be provided with a lever member control cable 140 on one side as shown in FIG. For example, the lever member control cable 140 may be composed of a throttle cable.

Here, the lever member control cable 140 includes an outer cable 141 for providing an outer sheath and an inner cable 143 that is elastically provided inside the outer cable 141 as shown in FIGS. 2 and 5. do. In this case, the inner cable 143 may be stretched and contracted according to the operation of the actuator 131 described above.

The actuator 131 may be mounted on either the seat cushion frame 20 or the seat back frame 30 of the rear seat 10, but in the present invention, the actuator 131 may be mounted on the seat back frame 30 as shown in FIG. Can be.

Meanwhile, 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.

Actuator bracket 137 is fixed to the seat back frame 30 of the rear seat 10 as shown in Figures 2 and 5, one end of the outer cable 141 of the lever member control cable 140 to be described later At least one fixing groove 137a to which an end is connected; may be provided.

As shown in FIG. 5, the fixing groove 137a is a groove in which one side is opened so that an end of the outer cable 141 of the lever member control cable 140 is fitted into a portion where the actuator bracket 137 is bent. It may be formed in the form. Accordingly, the fixing groove 137a can firmly fix the external cable 141 of the lever member control cable 140, thereby stretching the internal cable 143 within a predetermined range from the fixed external cable 141. You can do that.

The fixing bracket 133 may be fixed to the seat back frame 30 of the rear seat 10 as shown in FIGS. 2 and 5. In this case, the fixing bracket 133 may be disposed below the actuator 131 or the actuator bracket 137.

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

As shown in FIG. 5, the fixing groove 133a is a groove in which one side is opened so that an end of the outer cable 121 of the link member control cable 120 is fitted into a portion where the fixing bracket 133 is bent. It may be formed in the form. The fixing groove 133a is preferably configured in plural so that the end of the outer cable 121 of the other link member control cable 120 connected to the lever member 135 to be described later can be fitted and fixed. Accordingly, the fixing groove 133a can firmly fix the outer cable 121 of the link member control cable 120, thereby stretching the inner cable 123 within a predetermined range from the fixed outer cable 121. You can do that.

On the other hand, the fixing bracket 133 may further include at least one stopper 133b for blocking the rotation path of the lever member 135 to limit the rotation angle of the lever member 135.

As shown in FIG. 5, the stopper 133b is formed to be bent at one end of the fixing bracket 133 to block the rotation path of the lever member 135. Accordingly, the stopper 133b may limit the rotation radius of the lever member 135 to adjust the stretch range of the link member control cable 120 or the lever member control cable 140 described above.

As shown in FIG. 5, the lever member 135 may be rotatably hinged to one side of the fixing bracket 133 described above. In detail, the lever member 135 is disposed below the actuator 131 described above, and in particular, disposed below the lever member control cable 140, and rotates based on a hinged axis.

The lever member 135 may be connected to the lever member control cable 140 at one end as shown in FIG. In detail, one end of the inner cable 143 of the lever member control cable 140 is connected to one end of the lever member 135. Accordingly, the lever member 135 is rotated based on the hinged axis as the inner cable 143 of the lever member control cable 140 is stretched.

The lever member 135 may be connected to the link member control cable 120 at the other end as shown in FIG. In detail, one end of the inner cable 143 of the link member control cable 120 is connected to the other end of the lever member 135. Accordingly, the lever member 135 is rotated by the lever member control cable 140 described above, and can naturally stretch the inner cable 123 of the link member control cable 120.

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

Basically, one end of the lever member 135 is formed by the inner cable 143 extending from the outer cable 141 of the lever member control cable 140 by the actuator 131 as shown in FIG. A downward state is achieved.

And, the lever member 135 is one end by the inner cable 143 is pulled to the outer cable 141 of the lever member control cable 140 by the actuator 131 as shown in Figure 5 (b). It can achieve the state raised upwards. At the same time, the inner cable 123 of the link member control cable 120 connected to the other side of the lever member 135 is pulled along the rotational direction of the lever member 135 so that the outer cable 121 of the link member control cable 120 is connected. From the state of increase. Accordingly, as shown in (b) of FIG. 5, when the inner cable 123 provided on one side of the link member control cable 120 is pulled, at the same time as shown in (a) or (c) of FIG. Likewise, the inner cable 123 provided on the other side of the link member control cable 120 is pulled toward the outer cable 121.

On the other hand, the lever member 135 is a first extension projection (135a) to which the link member control cable 120 is connected as shown in FIG. And a second extension protrusion 135b to which the link member control cable 120 and the other link member control cable 120 are connected.

As shown in FIG. 5, the first extension protrusion 135a is formed in a protrusion shape that is formed to protrude perpendicularly to the other side in the longitudinal direction of the lever member 135, and has an inner cable of the link member control cable 120 described above. 123 ends are connected. The first extension protrusion 135a moves in the rotational direction of the lever member 135 together with the rotation of the lever member 135. Accordingly, the first extension protrusion 135a may expand and contract the inner cable 123 of the link member control cable 120 as the lever member 135 rotates.

As shown in FIG. 5, the second extension protrusion 135b is formed in the form of a protrusion that is formed to protrude perpendicularly to the other side in the longitudinal direction of the lever member 135, and has a different link from the link member control cable 120 described above. The inner cable 123 end of the member control cable 120 is connected. The second extension protrusion 135b moves in the rotational direction of the lever member 135 together with the rotation of the lever member 135. Accordingly, the second extension protrusion 135b may stretch the inner cable 123 of the other link member control cable 120 as the lever member 135 rotates.

 Here, the first extension protrusion 135a and the second extension protrusion 135b are formed to be symmetrical with each other. Preferably, the first extension protrusion 135a is formed to protrude toward the other side of the lever member 135, and the second The extension protrusion 135b protrudes from the other side lower portion of the lever member 135 disposed to face the first extension protrusion 135a. Accordingly, the first extension protrusion 135a and the second extension protrusion 135b may be symmetrically moved with each other according to the rotation of the lever member 135.

The controller 150 controls the switching unit 130 to release the locking state of the anti-rotation unit 115 and then controls the folding means 110 to rotate the seat back frame 30. As shown in FIG. 2, the controller 151 and the switch 153 are included.

The controller 151 may be mounted in the interior of the vehicle, preferably in the seatback frame 30 of the rear seat 10. Such a controller 151 may be configured as a control device for operating the above-described actuator 131 and the motor 119b of the driving unit 119. Such a controller 151 may be connected to the actuator 131 and the driving unit 119 by wire or wireless communication to operate the actuator 131 and the driving unit 119. Accordingly, the controller 151 may operate the actuator 131 or the motor 119b of the driving unit 119 according to a signal transmitted through the switch 153 which will be described later.

Meanwhile, the controller 151 completes the folded state of the seatback frame 30 through the switch 153 which will be described later, or the seatback frame 30 having completed the polled state reversely completes the unpolled state. The actuator 131 may be operated such that the inner cable 143 of the member control cable 140 is in an unlocked state as shown in FIG.

Here, the controller 151 may further include a sensor for sensing a state in which the folding of the seatback frame 30 is completed or detecting a state in which the unfolding of the seatback frame 30 is completed. Accordingly, the controller 151 easily detects the folded state and the unfolded state of the seatback frame 30 through the detection sensor, thereby automatically operating the actuator 131 to control the lever member control cable 140. The inner cable 143 may be in a loose state.

The switch 153 is configured to transmit a signal to the controller 151 to control the actuator 131 and the motor 119b. The switch 153 may be provided in a state mounted inside the vehicle or may be provided in a separate remote controller. have. Such a switch 153 may be connected by wire or wireless communication to transmit a signal to the controller 151 to operate the motor 119b of the actuator 131 and the driving unit 119.

The switch 153 is configured to fold or unfold the seatback in which the seatback frame 30 is embedded by controlling the actuator 131 and the driving unit 119 described above, and as shown in FIG. 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 driving unit 119 in the forward rotation direction to the controller 151 described above. The first button 153a may be configured as a control device for folding the seatback frame 30, and the operation structure for folding the seatback in which the seatback frame 30 is embedded will be described below.

First, the first button 153a is pressed to activate the controller 150 in an on state. At this time, the controller 150 transmits an operation signal for operating the actuator 131 to the controller 151 through the first button 153a.

In this case, the actuator 131 receiving the operation signal is operated to pull the inner cable 143 of the lever member control cable 140 to rotate the lever member 135 as shown in FIG. At this time, the inner cable 123 provided on one side of the link member control cable 120 connected to the rotating lever member 135 is pulled, and at the same time, the link member control cable 120 as shown in (a) of FIG. The inner cable 123 provided on the other side of the) is pulled to rotate the link member 117. And, as shown in (b) of Figure 3, the connecting projection 117a of the rotating link member 117 is inserted into and supported in the connecting groove 115b of the anti-rotation portion 115, the anti-rotation portion 115 As it is pushed up, the locking projection 115a of the anti-rotation part 115 caught in the first locking section 111a of the base bracket 111 is separated from the first locking section 111a to release the locking state. That is, the locked state of the recliner 113 locked by the anti-rotation unit 115 is released, and the seat back frame 30 which is integral with the recliner 113 forms a rotatable state. That is, the seatback in which the seatback frame 30 is embedded is in a foldable state.

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

 In this case, power is applied to the driving unit 119 which receives the forward rotation signal, and the rotation shaft of the motor 119b operated by the forward rotation signal is rotated in the forward rotation direction, that is, the direction in which the seat back frame 30 is folded. In detail, the recliner 113 integral with the motor 119b and the motor 119b is fixed while the rotary gear 119c installed on the rotation shaft of the motor 119b moves along the outer circumferential surface of the fixed gear 119a. It is rotated in the rotational direction to achieve a state as shown in FIG. That is, the seat back frame 30 which is integral with the recliner 113 is folded.

Therefore, the seatback frame 30 may 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 driving unit 119 in the reverse rotation direction to the controller 151 described above. The second button 153b may be configured as a control device for unfolding the seatback frame 30. The operation structure for unfolding the seatback in which the seatback frame 30 is embedded will be described below. .

First, the second button 153b is pressed to activate the controller 150 in an on state. 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 receiving the operation signal is operated to pull the inner cable 143 of the lever member control cable 140 to rotate the lever member 135 as shown in FIG. At this time, the inner cable 123 provided on one side of the link member control cable 120 connected to the rotating lever member 135 is pulled, and at the same time to the other side of the link control cable as shown in (c) of FIG. The provided inner cable 123 is pulled to rotate the link member 117. And, as the connecting projection 117a of the rotating link member 117 is inserted into and supported by the connecting groove 115b of the anti-rotation part 115, the base bracket 111 of the base bracket 111 is pushed up as the anti-rotation part 115 is pushed up. The locking protrusion 115a of the anti-rotation unit 115 caught in the second locking section 111b is spaced apart from the second locking section 111b to release the locking state. That is, the locked state of the recliner 113 locked by the anti-rotation unit 115 is released, and the seat back frame 30 which is integral with the recliner 113 forms a rotatable state. In other words, the seatback in which the seatback frame 30 is embedded is in an unfoldable state.

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

 In this case, power is applied to the driving unit 119 which has received the reverse rotation signal, and the rotating shaft of the motor 119b operated thereby rotates in the reverse rotation direction, that is, the direction in which the seat back frame 30 is unfolded. In detail, the recliner 113 which is integrated with the motor 119b and the motor 119b is reversed while the rotary gear 119c installed on the rotating shaft of the motor 119b moves along the outer circumferential surface of the fixed gear 119a. It is rotated in the rotational direction to achieve a state as shown in FIG. That is, the seat back frame 30 which is integral with the recliner 113 is unfolded.

Therefore, the seatback frame 30 may be automatically unfolded through the second button 153b.

As such, the vehicle rear seat folding apparatus 100 according to the present invention controls the folding means 110 and the switching unit 130 using the electric method through the control unit 150 of the above-described configuration of the rear seat 10. By automatically folding or unfolding the seatback, since no external force is required by the user, it is possible to easily fold or unfold the seatback of the rear seat 10 without difficulty for the elderly, children or the disabled.

100: vehicle rear seat folding apparatus 110: folding means
111: base bracket 113: recliner
115: anti-rotation unit 117: link member
119: drive unit 120: link member control cable
130: switching unit 131: actuator
133: fixing bracket 135: lever member
140: lever member control cable 150: control unit
151 controller 153 switch

Claims (13)

Folding means for folding or unfolding the seatback in which the seatback frame is embedded by rotatably connecting the seatback frame to the seat cushion frame of the rear seat;
A switching unit configured to release the locking state of the rotation preventing unit locked in the locked state to prevent the seat back frame from rotating, thereby allowing the seat back frame to be rotatable; And
And a controller configured to control the folding means to rotate the seat back frame after releasing the locking state of the rotation preventing unit by controlling the switching unit.
The folding means,
A base bracket mounted to the seat cushion frame and provided with a first catching section and a second catching section thereon;
A recliner mounted on the seat back frame and having one end pivotally connected to the base bracket;
A rotation prevention part rotatably connected to the recliner and provided with a locking protrusion on the first catching section or the second catching section on one side, and a connecting groove provided on the other side;
A link member rotatably connected to the recliner, a link member control cable stretched by the switching unit connected to an end thereof, and a link member provided at one side thereof with a connection protrusion entering and exiting the connection groove; And
And a driving unit for rotating the recliner in a forward or reverse direction, through which the locking state of the anti-rotation part is released through the control unit.
The switching unit,
An actuator operable by the control unit to expand and contract the lever member control cable provided on one side;
A fixing bracket fixed to the rear seat; And
The link member control cable is hinged rotatably to the fixing bracket, the lever member control cable is connected to one end, and the link member control cable is rotated according to the expansion and contraction of the lever member control cable while the link member control cable is connected to the other end. It includes a lever member for stretching;
The lever member,
A first extension protrusion to which the link member control cable is connected; And
And a second extension protrusion to which the link member control cable and another link member control cable are connected.
And the first extension protrusion and the second extension protrusion are symmetrically formed to be symmetrically moved with each other according to the rotation of the lever member.
delete According to claim 1, The connecting projection of the link member,
As the link member control cable is pulled, the link member is rotated at the same time as the link member is rotated to push the anti-rotation part while being inserted into the connection groove of the anti-rotation part, thereby catching the locking projection of the anti-rotation part. The rear seat folding device for a vehicle, characterized in that to release the locking by separating from the section or the second locking section.
delete delete The method of claim 1,
The link member control cable,
External cable; And
And an inner cable provided to be stretchable from an end of the outer cable.
The fixing bracket,
And at least one fixing groove which fixes one end of the outer cable of the link member control cable so that the inner cable is stretched only within a predetermined range.
The method of claim 6, wherein the fixing bracket,
And at least one stopper for blocking a rotation path of the lever member to limit a rotation angle of the lever member.
The method of claim 1, wherein the switching unit,
And an actuator bracket fixed to the rear seat and to which the actuator is fixed.
The method of claim 8,
The lever member control cable,
External cable; And
And an inner cable provided to be stretchable from an end of the outer cable.
The actuator bracket,
And at least one fixing groove which fixes one end of the outer cable of the lever member control cable so that the inner cable is stretched only within a predetermined range.
Folding means for folding or unfolding the seatback in which the seatback frame is embedded by rotatably connecting the seatback frame to the seat cushion frame of the rear seat;
A switching unit configured to release the locking state of the rotation preventing unit locked in the locked state to prevent the seat back frame from rotating, thereby allowing the seat back frame to be rotatable; And
And a controller configured to control the folding means to rotate the seat back frame after releasing the locking state of the rotation preventing unit by controlling the switching unit.
The folding means,
A base bracket mounted to the seat cushion frame and provided with a first catching section and a second catching section thereon;
A recliner mounted on the seat back frame and having one end pivotally connected to the base bracket;
A rotation prevention part rotatably connected to the recliner and provided with a locking protrusion on the first catching section or the second catching section on one side, and a connecting groove provided on the other side;
A link member rotatably connected to the recliner, a link member control cable stretched by the switching unit connected to an end thereof, and a link member provided at one side thereof with a connection protrusion entering and exiting the connection groove; And
And a driving unit for rotating the recliner in a forward or reverse direction, through which the locking state of the anti-rotation part is released through the control unit.
The drive unit,
A fixed gear fixed to the base bracket;
A motor integrally connected with the recliner and generating a driving force through an applied power; And
A rotating gear fixed to the rotating shaft of the motor and in engagement with the fixed gear and rotating by the driving force of the motor to move the recliner while moving along the fixed gear.
The switching unit,
An actuator operable by the control unit to expand and contract the lever member control cable provided on one side;
A fixing bracket fixed to the rear seat; And
The link member control cable is hinged rotatably to the fixing bracket, the lever member control cable is connected to one end, and the link member control cable is rotated according to the expansion and contraction of the lever member control cable while the link member control cable is connected to the other end. It includes a lever member for stretching;
The link member control cable,
External cable; And
And an inner cable provided to be stretchable from an end of the outer cable.
The fixing bracket,
And at least one fixing groove which fixes one end of the outer cable of the link member control cable so that the inner cable is stretched only within a predetermined range.
The method of claim 10, wherein the control unit,
A controller for operating the actuator and the motor; And
And a switch configured to transmit a signal to the controller to control the actuator and the motor.
The method of claim 11, wherein the switch,
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 rotating shaft of the motor; And
And a second button for transmitting an operation signal for operating the actuator to the controller and a reverse rotation signal for reverse rotation of the rotation shaft of the motor.
The method of claim 12, wherein the controller,
The actuator completes the folded state of the seat back frame through the switch, or the inner cable of the lever member control cable is released in response to the completion of the unfolded state of the seat back frame which has completed the polled state. Vehicle rear seat folding apparatus, characterized in that for operating.

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