KR101662390B1 - Seat cushion extension apparatus - Google Patents

Abstract

The extension panel provided at the front end portion of the seat cushion portion is lifted upwards in a swinging and sliding manner in order to expand the seating surface, thereby securing a larger portion capable of supporting the thigh portion of the lower body, A seat cushion extension device capable of providing a more comfortable seat feeling.
The above-described seat cushion extension device comprises an extension panel 7 installed to be able to expand forward and swingably with respect to the cushion frame 3 in a swinging and sliding manner, an extension panel 7 for the upwardly pivoting of the extension panel 7 with respect to the cushion frame 3, A sliding guide portion (50) for movably mounting the extension panel (7) with respect to the cushion frame (3), and a sliding guide portion And an extension driving unit 70 for providing a driving force for expanding the extension panel 7 in a swinging and sliding manner.

Description

[0001] DESCRIPTION [0002] Seat cushion extension apparatus [

The present invention relates to a seat cushion extension device, and more particularly, to a seat cushion extension device for extending a seating surface of a seat relative to a cushion portion of a seat in accordance with the physical characteristics of a passenger with a long thigh portion, To an extension device.

Particularly, the present invention is configured to operate in a swinging and sliding manner in which a portion of the seat that extends more widely than the cushion portion of the seat is lifted upwards toward the front, so that the thigh of the occupant is not pressed, To the seat cushion extension device.

Generally, a seat installed in an automobile interior is formed in a shape in which the length of the cushion in the front-rear direction is constant, so that it can not be variably controlled in accordance with the physical characteristics such as the body shape of the occupant. Accordingly, in the case of a passenger with a large body, there is a great inconvenience because the load of the thigh is relatively less at the cushion portion in the lower body portion.

In order to overcome such a problem, various techniques have been developed to widely use the area of the cushion portion of the seat. For example, the vehicle seat disclosed in Japanese Patent Application Laid-Open No. 10-2013-0064139 has a structure for supporting the seat cushion A seat fan, a support element adjustable relative to the seat fan along an adjustment direction, for supporting an additional cushion adjustable to the seat cushion of the seat fan, and a seat element for supporting the seat element, And a seat depth adjusting device disposed on the fan.

In this case, the seat depth adjusting device includes a guide assembly for supporting the support element, and an operation assembly for operating the seat depth adjusting device. The guide assembly is configured to be movably guided in the sheet pan along the adjustment direction by the guide means and the guide means includes at least one guide device integrally formed with the sheet pan.

Accordingly, the Japanese Patent Application Laid-Open No. 10-2013-0064139 can provide a vehicle seat including a device capable of adjusting the depth of a seat, and in particular, a seat depth adjusting device has a simple design structure, Enabling optimization of the weight for the < / RTI >

However, in the vehicle seat having the above conventional seat depth adjusting function, in the case of a passenger with a long femoral portion of the lower body, the seating surface set by the seat cushion 110 and the additional cushion 50 is sufficient to satisfy the entire area of the thigh The guide means includes a first guide device 61 including a depression 611 formed in the sheet pan 6 and the guide assembly 3 is provided with Which comprises a guide web 33 extending along the direction of adjustment x and connected to a support element 5 which is guided along the depression 611 and which guides the guide assembly 3 Is disposed on the seat pan 6 at one side of the seat fan 6 facing the seat cushion 110 so that the weight F is applied to the support element 5 during proper use The guide web 33 is supported by the seat fan 6, and the first guide device 61 Includes an opening 610 extending along the adjustment direction x through which the guide web 33 of the guide assembly 3 of the seat depth regulating device 2 is guided under the seat pan 6 The structure and the operation mechanism are so complicated that they are connected with the operation assembly 4 of the seat depth adjusting device 2 in which the seat depth adjusting device 2 is disposed.

The seat of US Patent Application Publication No. 2008-0231099 has a slide 60 on the lower end surface of the thigh support 55 and a curved extension portion 53 extending toward the front is provided on the upper surface of the seat fan 52 And the slide 60 slides along the curved extension portion 53 to move the femoral support 55 forward / backward. However, even in such a case, since the area of the seating surface that can be secured by protruding and retracting the femoral support 55 forward can not sufficiently support the lower body portion of the passenger with the longer femoral region, there is a demand for improvement thereof It is true.

Korean Patent Publication No. 10-2013-0064139 U.S. Published Patent Application No. 2008-0231099

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a seat cushion for a seat cushion, And it is an object of the present invention to provide a seat cushion extension device capable of widening a region capable of supporting the thigh.

It is another object of the present invention to provide a seating feeling that can comfortably support a lower body part of an occupant through an extension panel lifted upward in a swinging and sliding manner.

According to an aspect of the present invention, there is provided an extensible panel comprising: an extension panel installed forwardly and swingably and slidingly with respect to a cushion frame; and an extension panel movably installed on the cushion frame in an upward swinging manner A sliding guide portion for slidingly installing the extension panel with respect to the cushion frame, and an extension portion for providing a driving force for expanding or accommodating the extension panel in a swinging and sliding manner with respect to the cushion frame. Wherein a position of the swing guide part and the sliding guide part between the cushion frame and the extension panel is set to be higher than a position of the extension driving part and the operation stroke of the extension driving part is set to a position Characterized in that the set larger than the operating stroke of the unit.

In the present invention, the swing guide portion includes a fixed bracket fixed to a cushion panel provided on the cushion frame and having a curved guide slot sloping downward toward the front, And a guide pin fixed to the moving bracket and movably inserted in the guide slot of the fixing bracket.

According to the present invention, the fixing bracket includes a mounting flange that is bent in a horizontal direction from the guide slot for engagement with the cushion panel.

The present invention further includes an auxiliary guide inserted into the guide slot and having a curved guide groove capable of directly contacting the guide pin, the auxiliary guide being inserted into the guide slot, And guide grooves are formed at one side of the guide pin toward the free end of the guide pin so as to limit exposure to the outside.

In the present invention, the sliding guide portion may include a sliding rail fixed to a cushion panel provided on the cushion frame and having a straight guide groove forward, a guide rail mounted on the linear guide groove in a state of being engaged with the extension panel, And a tilt bar coupled to the slider and fixed to the back surface of the extension panel.

According to the present invention, the sliding rail further includes a sliding cover detachably assembled to the top of the slider so as to prevent the slider from being separated from the sliding rail. And an engaging mechanism having a structure of an engaging type.

According to the present invention, the sliding rail is coupled to the bottom surface of the cushion panel, and the slider is formed at its free end with a bent portion for hinging with the tilting bar.

The extension driving unit may include a driving motor coupled to the cushion panel mounted on the cushion frame, and a lead screw that reciprocates linearly in accordance with rotation of the driving motor and has a free end fixed to the extension panel .

In the present invention, the driving motor is pivotally coupled to a bottom surface of the cushion panel via a fixed hinge point, and the fixed hinge point is mounted on the housing of the driving motor and the bottom surface of the cushion panel. And the brackets are set to positions where fastening pins for coupling the brackets to each other are located.

The seat cushion extension device according to the present invention can enlarge the seating surface of the occupant through the installation of the extension panel which is spread forward through the swing guide part and the sliding guide part with respect to the cushion frame, It is possible to provide a seat cushion corresponding to the seat cushion.

In this case, the extension panel operates in a swinging and sliding manner with respect to the cushion portion, and is lifted upwards toward the front, thereby realizing a more comfortable seat feeling without pressing the thigh of the occupant.

Particularly, the present invention provides a cushion frame which can be operated by an extension driving unit for a series of operations for expanding the extension panel, thereby providing convenience of operation and at the same time, the extension position of the extension panel is suitably adjusted to the physical characteristics of the occupant And the like.

1 is a perspective view showing a seat cushion extension device according to an embodiment of the present invention.
2 is an exploded perspective view showing main components in a seat cushion extension device according to an embodiment of the present invention.
3 is a bottom perspective view of a seat cushion extension device according to an embodiment of the present invention, in which major constituent parts are exploded.
4 is a perspective view showing a state in which the extension panel is deployed forward in the seat cushion extension device according to the embodiment of the present invention.
FIGS. 5 to 7 sequentially illustrate the operation of the seat cushion extension device according to the embodiment of the present invention, from the receiving position to the deploying position. In particular, only the main constituent parts involved in swing and sliding are locally Fig.

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

FIG. 1 is a perspective view showing a seat cushion extension device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing major components in a seat cushion extension device according to an embodiment of the present invention, FIG. 3 is a bottom perspective view of a seat cushion extension device according to an embodiment of the present invention.

Referring to Fig. 1, a seat of an automobile is provided in a passenger compartment of a vehicle for securing a passenger seat. The passenger seat is largely composed of a seat back (not shown) for supporting an upper body portion of a passenger, And a seat cushion portion (1). The seat cushion part 1 has a cushion frame 3 for supporting the load on the lower body part of the passenger inside the seat cushion part 1 Respectively. The cushion frame 3 is provided with a cushion panel 5 that is assembled to secure a mounting site in front of the seating surface for installation of the seat cushion extension device.

The seat cushion extension device according to the present invention is characterized in that the seat cushion extension device comprises an extension panel (1) provided so as to be deployed upward from the seating surface located at the front side end portion of the cushion panel (5) (7). That is, the present invention is configured to have a mechanism for expanding the extension panel 7 forward in the front end portion of the cushion panel 5 in a swinging and sliding manner.

In this case, it is preferable that the cushion panel 5 including the cushion frame 3 and the extension panel 7 are both provided with cushion pads (not shown) of a buffer material. 1, reference numeral 9 denotes a fixed rail provided on a floor panel of a passenger compartment of a vehicle, and reference numeral 11 denotes a movable rail which is movably assembled with respect to the fixed rail 9 to support the cushion frame 3 Which corresponds to the moving rail.

As shown in FIGS. 2 and 3, the seat cushion extension device according to the present invention includes the seat cushion 1, the extension panel 7 swingably mounted on the seat cushion 1 so as to be swingable upward, , A sliding guide portion (50) for moving the extension panel (7) relative to the seat cushion portion (1) such that the extension panel (7) can be moved in a linear direction in a sliding manner, and a seat cushion portion And an extension driving unit 70 for providing a driving force required for developing or storing the swinging and sliding manner of the extension panel 7 with respect to the driving unit 1.

At this time, the position of the swing guide part 30 and the sliding guide part 50 between the cushion frame 3 and the extension panel 7 is set higher than the position of the extension driving part 70, The operation stroke by the extension driving unit 70 is set to be larger than the operation stroke by the swing guide unit 30. [

The swing guide unit 30 includes a fixed bracket 32 fixed to a cushion panel 5 provided on the upper portion of the cushion frame 3 and having a curved guide slot 32a inclined downward, A movable bracket 40 to which the other end is movably engaged along the guide slot 32a while one end of the movable bracket 40 is fixed to the back surface of the extension panel 7, And a guide pin 34 movably inserted in the guide slot 32a of the fixed bracket 32. [

That is, the guide pin 34 is guided along the curved guide slot 32a of the fixed bracket 32 while being inserted into the through hole 40a located at the free end of the movable bracket 40 Assembled. Particularly, the swing guide portion 30 is provided separately on the left and right sides between the front end portion of the cushion panel 5 and the extension panel 7, so that the swing motion of the extension panel 7 can be stably .

The fixing bracket 32 integrally includes a mounting flange 36 that is bent in a horizontal direction from the guide slot 32a for engagement with a bottom surface portion of the cushion panel 5 by a screw fastening method, The mounting flange 36 is formed with a plurality of through holes 36a for screwing along the longitudinal direction of the member.

The fixed bracket 32 is inserted into the guide slot 32a to smoothly guide the movement of the guide pin 34 through direct contact with the free end of the guide pin 34, And an auxiliary guide 38 for preventing the free end of the guide pin 34 from being exposed to the outside.

For this purpose, the auxiliary guide 38 is inserted into the guide slot 32a and forms a curved guide groove 38a which can directly contact with the free end of the guide pin 34. As shown in FIG. The auxiliary guide 38 is configured to have a structure in which the curved guide groove 38a is opened only in one direction toward the free end of the guide pin 34. [

The auxiliary guide 38 is inserted into the guide slot 32a to directly guide the free end of the guide pin 34 and to limit the exposure of the guide pin 34 to the outside, And a guide groove 38a whose one surface is opened toward the free end of the guide groove 38a. More preferably, the auxiliary guide 38 is made of a resin material whose surface of the curved guide groove 38a is coated with a low friction material so as to reduce friction and noise with the guide pin 34 Do.

The sliding guide portion 50 includes a sliding rail 52 fixed to a cushion panel 5 provided on the upper portion of the cushion frame 3 and having a straight guide groove 52a extending forward, A slider 54 mounted in the linear guide groove 52a so as to be coupled to the slider 54 so as to be movable in a forward direction along the guide groove 52a, And a tilt bar 58 fixed to the rear of the extension panel 7 so as to be long in the longitudinal direction.

Also in this case, the sliding guide portion 50 is separately provided on the left and right sides between the front end portion of the cushion panel 5 and the extension panel 7, so that the swing motion of the extension panel 7 It is preferable to induce it stably. The linear guide groove 52a is formed of at least a pair of grooves arranged in parallel with each other on the upper surface of the sliding rail 52. The slider 54 is formed in a stable manner with respect to the linear guide groove 52a. And is configured to form downwardly bent protrusions for contact.

The sliding rail 52 includes a sliding cover 56 for detachment of the slider 54, which is detachably mounted on the upper portion of the sliding rail 52 and is movable along the linear guide groove 52a. That is, the slider 54 is installed on the upper portion of the linear guide groove 52a of the sliding rail 52 and is supported by the sliding cover 56 to prevent the slider 54 from being separated.

In this case, the sliding rail (52) and the sliding cover (56) are provided with hooking mechanisms (53, 57) having a structure of mutually interlocking type in the form of ribs and insertion grooves for assembly. That is, the latching mechanisms 53 and 57 include ribs corresponding to protruding structures for fitting into the sliding rail 52 and the sliding cover 56, respectively, which are opposed to each other on both sides of the sliding rail 52 and the sliding cover 56, And is formed in the shape of an insertion groove for suppressing the deviation of the rib.

The sliding rail 52 is coupled to the bottom surface of the cushion panel 5 in a screwed manner. Also in this case, the sliding rail 52 forms a plurality of through holes for screw connection with the cushion panel 5.

The slider 54 forms a seating portion 54a, which is opened at its free end in a curved shape toward the upper side for hinge engagement with the tilt bar 58. [ That is, the slider 54 can easily be assembled and disassembled with the tilt bar 58 through the formation of the seating portion 54a, thereby facilitating assembly and disassembly.

The tilting bar 58 is installed to be stably supported on the back surface of the extension panel 7 via a mounting bracket 58a. In this case, the mounting bracket 58a is fixedly coupled to the back surface of the extension panel 7 in a state of being assembled at both ends of the tilting bar 58 in a screw-tight manner.

The extension driving unit 70 includes a driving motor 72 coupled to the cushion panel 5 mounted on the upper portion of the cushion frame 3 and a driving motor 72 reciprocating in a linear direction And a lead screw (74) whose end is fixed to the back surface of the extension panel (7). In this case, the extension driving unit 70 includes a gear box (not shown) including a nut for converting the rotational motion of the driving motor 72 into a linear reciprocating motion of the lead screw 74 do.

The extension driving unit 70 may be provided at a single location in the central portion between the front end of the cushion panel 5 and the extension panel 7. In particular, the driving motor 72 is controlled by a user (not shown) to vary the forward / reverse rotation and the degree of forward / reverse rotation, that is, the moving stroke of the lead screw 74, The degree of deployment with respect to the extension panel 7 is dependent on the operation control of the drive motor 72. [

The driving motor 72 is pivotally coupled to the cushion panel 5 via a fixed hinge point. The fixed hinge point is located between the housing of the driving motor 72 and the bottom surface of the cushion panel 5 And the mounting brackets 76, which are engaged with the mounting brackets 76, are located. In this case, the fixed hinge point set by the coupling pin 78 is set to a moving posture 74 for the lead screw 74 which reciprocates in a linear direction together with the extension panel 7 during operation of the driving motor 72 The change in the temperature of the liquid is supported more stably. That is, the fixed hinge point serves to absorb a change in the relative angle between the drive motor 72 and the extension panel 7, which changes according to the degree of the movement stroke of the lead screw 74.

The lead screw 74 is installed to be stably supported via a mounting bracket 75a which is firmly fixed to the back surface of the extension panel 7. In this case, the lead screw 74 forms a connecting portion 74a for coupling with the mounting bracket 75a at a free end thereof, and the connecting portion 74a connects the connecting pin 75 with the mounting bracket 75a Thereby forming a through hole 74b for use coupling.

The seat cushion extension device according to the present invention is provided with the swing guide portion 30, the sliding guide portion 50 and the extension driving portion 70 via the cushion panel 5 mounted on the cushion frame 3 The area of the seating surface that the occupant can secure through the extension panel 7 that is developed so as to be lifted up toward the upper direction can be secured as shown in Fig. 4, so that the lower body portion of the occupant So that it can be stably supported.

The movement of the extension panel 7 in the swing and sliding manner can be more clearly understood with reference to FIGS. 5 to 7.

5 to 7, when the forward rotation of the drive motor 72 is performed in accordance with the switch operation of the occupant, the lead screw 74 moves forward, and the bottom surface of the extension panel 7 The part is pushed forward.

The swing guide portion 30 and the sliding guide portion 50 can support the fuselage portion of the passenger by expanding the position of the extension panel 7 with respect to the cushion panel 5 in a swinging and sliding manner It is possible to secure a seating surface having a larger width.

That is, the swing guide portion 30 guides the movement of the movable bracket 40 along the curved guide slot 32a of the fixed bracket 32 in a predetermined direction, and at the same time, the sliding guide portion 50 Guides the movement of the slider 54 along a straight guide groove 52a of the sliding rail 52 in a predetermined direction.

Particularly, the position of the swing guide part 30 and the sliding guide part 50 relative to the extension panel 7 is set higher than the position of the extension driving part 70, and the operation by the extension driving part 70 Since the stroke is set to be larger than the stroke of operation by the swing guide portion 30, the movement posture of the extension panel 7 can be switched to a state of lifting upward in the upward direction.

As a result, the entire seating surface of the seat cushion portion 1 is secured to a greater extent in accordance with the physical characteristics of the passenger with a long thigh portion of the lower body, and the lower surface of the thigh portion is stably supported upwardly, To provide a more comfortable environment.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular details of the embodiments set forth herein. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

1-seat cushion part 3-cushion frame
5-Cushion Panel 7-Extension Panel
30-Swing guide part 32-Fixing bracket
34- Guide pin 36-Mounting flange
38-Auxiliary Guide 40-Moving Bracket
50-Sliding guide part 52-Sliding rail
54-slider 56-sliding cover
58-tilt bar 70-extension driving part
72-drive motor 74-leadscrew
76-Mounting bracket 78-Locking pin

Claims (13)

An extension panel 7 installed so as to be deployable forward and swingably in a sliding manner with respect to the cushion frame 3;
A swing guide part (30) for movably mounting the extension panel (7) with respect to the cushion frame (3) in a swinging manner of upward swing;
A sliding guide part (50) for movably mounting the extension panel (7) on the cushion frame (3) in a sliding manner; And
And an extension driving unit (70) for providing a driving force for developing the extension panel (7) in a swinging and sliding manner with respect to the cushion frame (3)
The swing guide unit 30 includes a fixed bracket 32 fixed to the cushion panel 5 mounted on the cushion frame 3 and having a curved guide slot 32a inclined downward forward, A movable bracket 40 fixed to the movable bracket 40 and movably coupled along the guide slot 32a in a state of being fixed to the movable bracket 40 and a guide slot 32a of the fixed bracket 32, And a guide pin (34)
The extension driving unit 70 includes a driving motor 72 coupled to the cushion panel 5 mounted on the cushion frame 3 and a driving motor 72 reciprocating in a linear direction in accordance with the rotation of the driving motor 72, And a lead screw 74 fixed to the extension panel 7 and the housing of the driving motor 72 includes a mounting bracket 76 coupled to the bottom surface of the cushion panel 5 and a fastening pin 78 ≪ / RTI >
The lead screw 74 has a connecting portion 74a for engaging with a mounting bracket 75a fixed to the back surface of the extension panel 7 and the connecting portion 74a is connected to the mounting bracket 75a, (75), respectively,
The position of the swing guide part 30 and the sliding guide part 50 between the cushion frame 3 and the extension panel 7 is set higher than the position of the extension driving part 70, (70) is set to be larger than an operation stroke by the swing guide portion (30). delete delete The method according to claim 1,
Characterized in that said fixing bracket (32) comprises a mounting flange (36) that is bent in a horizontal direction from said guide slot (32a) for engagement with said cushion panel (5). The method according to claim 1,
Further comprising an auxiliary guide (38) inserted into the guide slot (32a) and having a curved guide groove (38a) capable of directly contacting the guide pin (34). The method of claim 5,
The auxiliary guide 38 is inserted into the guide slot 32a to directly guide the free end of the guide pin 34 and to limit the exposure to the outside, Is formed with a guide groove (38a) whose one surface is opened toward the seat cushion extension device. The method of claim 5,
Wherein the auxiliary guide (38) is made of a resin material whose surface is coated with a low friction material so as to reduce friction and noise with the guide pin (34). The method according to claim 1,
The sliding guide portion 50 includes a sliding rail 52 fixed to the cushion panel 5 provided on the cushion frame 3 and having a straight guide groove 52a forwardly, A slider 54 movably installed forward along the linear guide groove 38a in a state where the tilting bar is coupled with the slider 54 and a tilting bar 54 coupled to the slider 54 and fixed to the back surface of the extension panel 7 58). ≪ / RTI > The method of claim 8,
The sliding rail (52) is detachably mounted on the sliding rail (52), and further includes a sliding cover (56) for preventing the slider (54) And an engagement mechanism (53, 57) having a structure in which a rib and an insertion groove are mutually fitted to each other for assembling the seat cushion. The method of claim 9,
The sliding rail 52 is coupled to the cushion panel 5 and the slider 54 is formed at its free end with an angled seating portion 54a for hinged engagement with the tilt bar 58 And a seat cushion extension device.
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