Vehicle seat device

Abstract

The present invention provides a vehicle seat device, wherein a base bracket and a moving bracket are installed on a vehicle body floor so that a seat can be raised and lowered, and a seat rail is installed on the moving bracket so that the seat can be moved in a front-rear direction, so that the seat can be moved and raised. Therefore, since the lifting structure of the seat is installed on the vehicle body floor, a space under the seat is ensured, thereby improving the atmosphere in the vehicle due to improved space efficiency.

Description

Technical Field

[0001] The present invention relates to a vehicle seat device by which a seat is lifted and moved. More particularly, the present invention relates to a vehicle seat device that reduces the installation space on a vehicle body floor when a moving structure of the seat is applied. Background Art

[0002] The seat of a vehicle allows a driver or a passenger to sit in a comfortable posture so as not to feel tired even during a long journey. Such a seat supports the weight of the passenger and is mainly configured to include: a seat cushion installed on the floor surface of the vehicle interior and slidable forward and backward; and a seat back installed to be rotatable at a predetermined angle relative to the seat cushion to support the passenger's back.

[0003] Meanwhile, in the riding space of the vehicle, people of various sizes may ride, and various spaces for loading goods may be needed. In order to meet these requirements, the seat back can be folded and the angle of the seat back can be freely adjusted in the prior art.

[0004] However, in the prior art, in order to realize the moving function of the seat, a pair of rails are provided under the seat, thereby increasing the dead space. That is, in order to move the seat in the front-rear direction, a fixed rail installed on the vehicle body floor and a moving rail moving on the fixed rail are provided. Since the fixed rail and the moving rail are composed of a pair on the lower side of the seat, the installation area increases and the number of components also increases.

[0005] The information included in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an admission or any form of suggestion that this information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] Various aspects of the present invention are directed to providing a vehicle seat apparatus by which an installation space of a moving and lifting structure of a seat is reduced, thereby improving space efficiency of a vehicle body floor.

[0007] In various aspects of the present invention, a vehicle seat device is provided, which includes: a base bracket, which is configured to be fixed to a vehicle body floor; a movable bracket, which is connected to the base bracket and is raised and lowered in the up-and-down direction by a guide portion extending from the base bracket in the up-and-down direction; a driving mechanism, which is installed on the base bracket and connected to the movable bracket and provides power to move the movable bracket along the guide portion; and a seat track, which is installed on the movable bracket and is configured to be raised and lowered together with the movable bracket, and the seat track enables the seat frame to move in the front-and-rear direction.

[0008] The guide portion may be mounted to the base bracket by extending obliquely forward or rearward from the base bracket or by extending vertically from the base bracket.

[0009] The guide portion may include: a guide rail extending in the up and down directions; and a sliding portion connected to the guide rail to slide on the guide rail, the base bracket may include a pair of base plates, the sliding portion is installed on the inner surface of each base plate, the movable bracket may be located between the pair of base plates, and the guide rail is arranged on each of the opposite sides of the movable bracket, and the guide rail is connected to the sliding portion of each base plate.

[0010] A support rod may be provided on the base bracket, the support rod extending in a direction opposite to the base plates and coupled to each base plate.

[0011] The moving bracket may include a pair of moving plates, and the guide rail is mounted on a surface of each moving plate opposite to the base plate.

[0012] A connecting rod may be provided on the moving bracket, the connecting rod extending in a direction opposite to the moving plates and being combined with each moving plate.

[0013] The base bracket may be formed into a polygonal shape by a fixing portion fixed to a vehicle body floor and a plurality of extending portions extending upward from the fixing portion, and the moving bracket may be formed into a polygonal shape by a mounting portion mounted to a seat rail and a plurality of connecting portions extending downward from the mounting portion.

[0014] The extending portion of any one of the base brackets and the connecting portion of any one of the moving brackets may be collinear with each other, and the guiding portion may be provided at the extending portion collinear with the connecting portion.

[0015] The driving mechanism may include a motor portion installed on the base bracket and a conveying portion extending from the motor portion in an extending direction of the guide portion and connected to the moving bracket and moving the moving bracket along the guide portion when the motor portion operates.

[0016] The motor part can be configured to provide a rotational force, the conveying part can be configured as a lead screw extending along the extension direction of the guide part, and the moving part can be set on the moving bracket, the moving part is threadedly fastened to the lead screw, and moves along the conveying part that rotates when the motor part operates.

[0017] The device may further include: an auxiliary driving unit, a first end of which is rotatably connected to the vehicle body floor, and a second end of which is rotatably connected to the moving bracket, and the length of the auxiliary driving unit is variable to assist the lifting and lowering of the moving bracket.

[0018] The auxiliary driving portion may be configured to be variable in length in an extending direction of the guide portion, and to provide a repulsive force to the moving bracket in a rising direction of the moving bracket.

[0019] The seat track may include: a fixed rail fixed to the upper end of the moving bracket and extending in the front-rear direction; a moving rail connected to the fixed rail to slide on the fixed rail in the front-rear direction, and the seat frame is mounted on the moving rail; and a drive motor mounted on the moving rail and causing the moving rail to move in the front-rear direction.

[0020] According to the vehicle seat device having the above structure, the base bracket and the moving bracket are installed on the vehicle body floor to raise and lower the seat, and the seat rail is installed on the moving bracket to move the seat in the front and rear directions, so that the seat moves and raises and lowers. Therefore, since the lifting structure of the seat is installed on the vehicle body floor, the space under the seat is ensured, thereby improving the atmosphere in the vehicle due to the improvement of space efficiency.

[0021] The methods and apparatus of the present invention have other features and advantages that will be apparent from or described in more detail in the accompanying drawings incorporated herein and in the following detailed description, which together serve to explain some principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view schematically showing a vehicle seat apparatus according to an exemplary embodiment of the present invention;

[0023] Figure 2 and Figure 3 It is shown Figure 1 A view of the structure of the vehicle seat device shown;

[0024] Figure 4 It is shown as an example Figure 1 A view of a seat track of a vehicle seating arrangement shown;

[0025] Figure 5 It is shown as an example Figure 1 A view of the base bracket and drive mechanism of the vehicle seating arrangement shown; and

[0026] Figure 6 It is shown as an example Figure 1 A view of a moving bracket of a vehicle seat arrangement is shown.

[0027] It will be appreciated that the accompanying drawings are not necessarily drawn to scale, presenting a somewhat simplified representation of various features illustrating the basic principles of the invention. The specific design features of the present invention as incorporated herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular intended application and use environment.

[0028] In the drawings, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0029] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments of the present invention, it will be understood that this specification is not intended to limit the present invention to those exemplary embodiments. On the other hand, the present invention is intended to cover not only exemplary embodiments of the present invention, but also various alternatives, modifications, equivalents and other embodiments that may be included in the spirit and scope of the present invention as defined in the appended claims.

[0030] Hereinafter, a vehicle seat apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0031] Figure 1 is a perspective view schematically showing a vehicle seat apparatus according to an exemplary embodiment of the present invention, Figure 2 and Figure 3 It is shown Figure 1 A view showing the structure of a vehicle seat device, Figure 4 It is shown as an example Figure 1 A view of a seat track of a vehicle seat arrangement shown, Figure 5 It is shown as an example Figure 1 A view of a base bracket and drive mechanism of a vehicle seat arrangement shown, Figure 6 It is shown as an example Figure 1 A view of a moving bracket of a vehicle seat arrangement is shown.

[0032] like Figure 1 and Figure 2 As shown, a vehicle seat device according to an exemplary embodiment of the present invention may include: a base bracket 10, which is fixed to a vehicle body floor F; a moving bracket 20, which is installed to be raised and lowered in the up-and-down direction by a guide portion G extending from the base bracket 10 in the up-and-down direction; a driving mechanism 30, which is installed on the base bracket 10 and connected to the moving bracket 20, and provides power to move the moving bracket 20 along the guide portion G; and a seat track 40, which is installed on the moving bracket 20 and is raised and lowered together with the moving bracket 20, and the seat track enables the seat frame S to move in the front-and-rear direction.

[0033] In the seat device according to the present invention, a base bracket 10 fixed to a vehicle body floor F has a predetermined height in the up-down direction, and a guide portion G extending in the up-down direction is installed on the base bracket 10. Here, the guide portion G may extend obliquely forward or backward or extend vertically in the up-down direction. The extension angle and extension length of the guide portion G are determined according to the initial design of the seat device, in which the interior space and the seat are considered. The lifting direction and lifting height of the seat frame S are determined by the extension angle and extension length of the guide portion G.

[0034] The moving bracket 20 is installed on the guide portion G to move along an extending direction of the guide portion, and the moving bracket 20 may be lifted and lowered along the guide portion G by a driving mechanism 30 installed on the base bracket 10 .

[0035] Meanwhile, the seat rail 40 is mounted on the moving bracket 20, and the seat frame S is mounted on the seat rail 40 to move in the front-rear direction. Here, the seat frame S is configured to include a seat back frame S1 and a seat cushion frame S2 connected to each other by a recliner, wherein the seat cushion frame S2 can be mounted on the seat rail 40.

[0036] like Figure 2 and Figure 4 As shown, the seat track 40 may include: a fixed rail 41, which is fixed to the upper end of the movable bracket 20 and extends in the front-to-rear direction; a movable rail 42, which is connected to the fixed rail 41 to slide in the front-to-rear direction, and the seat frame S is mounted on the movable rail 42; and a drive motor 43, which is mounted on the movable rail 42 and causes the movable rail 42 to move in the front-to-rear direction.

[0037] That is, the fixed rail 41 is fixed to the upper end of the moving bracket 20 to provide a moving path in the front-rear direction, and the seat frame S is mounted on the moving rail 42 and slidably connected to the fixed rail 41. Here, a roller R1 and a bearing ball R2 are provided between the fixed rail 41 and the moving rail 42 so that the moving rail 42 slides smoothly, and a reinforcing rail 44 may be provided in each of the fixed rail 41 and the moving rail 42 to enhance rigidity.

[0038] The driving motor 43 for moving the moving guide rail 42 is installed on the moving guide rail 42, and moves along the guide rod 45 together with the moving guide rail 42, so that the seat frame S installed on the moving guide rail 42 can move in the front-rear direction. Here, the guide rod 45 may be configured as a lead screw or a rack extending in the front-rear direction along the fixed guide rail 41, and the driving motor 43 may be provided with a lead nut or a pinion 46 threadedly fastened to the guide rod 45. Therefore, when the driving motor 43 is operated, the guide rod 45 rotates, and the lead nut or the pinion 46 moves along the guide rod 45. Therefore, the seat frame S can move together with the driving motor 43 and the moving guide rail 42.

[0039] The seat frame S may be moved in the front-rear direction by the above-mentioned seat rail 40. A plurality of seat rails 40 may be provided at the upper end portion of the moving bracket 20, but it may be configured to provide a single seat rail 40 to reduce the installation space.

[0040] At the same time, if Figure 5 and Figure 6 As shown, the base bracket 10 has a pair of base plates 12, and the moving bracket 20 has a pair of moving plates 22. Therefore, the supporting rigidity of the base bracket 10 and the moving bracket 20 is ensured.

[0041] Here, the movable bracket 20 is located between a pair of base plates 12, a sliding portion 11 is set on the inner surface of each base plate 12, and a guide rail 21 connected to the sliding portion 11 is set on the surface of each movable plate 22 opposite to the base plate 12, so that the movable bracket 20 can move on the base bracket 10.

[0042] That is, the guide rail 21 has a channel structure extending in the up-down direction, and the slide portion 11 is configured to be inserted into the guide rail 21. Therefore, the guide rail 21 moves by sliding on the slide portion 11, so that the moving bracket 20 moves together with the guide rail 21 to be raised and lowered.

[0043] In addition, since the moving bracket 20 is located between the pair of base plates 12, the overall size of the seat device is reduced, and the moving bracket 20 is protected from external interference. Therefore, the lifting and lowering operation of the moving bracket 20 can be smoothly performed.

[0044] Here, a support rod 13 may be provided on the base bracket 10, the support rod 13 extending in a direction opposite to the base plate 12 and combined with each base plate 12. The support rod 13 is positioned to avoid the moving bracket 20 and the driving mechanism 30 provided between a pair of base plates 12, and increases the rigidity of the base bracket 10 by combining with each base plate 12. A plurality of support rods 13 may be provided on the surface of the base plate 12, and the support rod 13 may extend in a direction perpendicular to the base plate 12 and be combined with the base plate 12.

[0045] In addition, a connecting rod 23 may be provided at the moving bracket 20 , the connecting rod 23 extending in a direction opposite to the moving plates 22 and combined with each of the moving plates 22 .

[0046] Therefore, a pair of moving plates 22 are integrally connected to each other by connecting rods 23, thereby increasing the rigidity of the moving bracket 20. A plurality of connecting rods 23 may be provided on the surface of the moving plate 22, and the connecting rods 23 may extend in a direction perpendicular to the moving plate 22 and be combined with the moving plate 22.

[0047] The support rod 13 and the connection rod 23 may be formed in a rod shape, and may be bolted to the base plate 12 and the moving plate 22 , respectively, to be combined with the base plate 12 and the moving plate 22 .

[0048] At the same time, if Figure 5 and Figure 6 As shown, the base bracket 10 can be formed into a polygonal shape by a fixing portion 10a fixed to the vehicle body floor F and a plurality of extending portions 10b extending upward from the fixing portion 10a, and the moving bracket 20 can be formed into a polygonal shape by a mounting portion 20a mounted on the seat rail 40 and a plurality of connecting portions 20b extending downward from the mounting portion 20a.

[0049] Here, the base bracket 10 may be formed in a trapezoidal shape, and the fixing portion 10a forming the lower end portion of the base bracket 10 is configured to be longer than the upper end portion of the base bracket 10. Therefore, the base bracket 10 ensures a fixing force to the vehicle body floor F. In addition, since the base bracket 10 has a trapezoidal shape, the base bracket 10 ensures its own rigidity to support the weight of the driver, and reduces the length of the upper end portion, thereby reducing the weight of the seat device.

[0050] Meanwhile, the moving bracket 20 may be configured in a trapezoidal shape or a triangular shape, and the mounting portion 20a is formed to extend in the front-rear direction so that the seat rail 40 is firmly fixed to the mounting portion 20a. In the drawings, the moving bracket 20 is formed in a triangular shape, and since the moving bracket 20 has a triangular shape, the moving bracket 20 ensures its own rigidity and reduces its weight.

[0051] The extension portion 10b of any one of the base brackets 10 and the connection portion 20b of any one of the mobile brackets 20 may be collinear with each other, and the guide portion G may be provided at the extension portion 10b collinear with the connection portion 20b. Therefore, any one of the extension portions 10b of the base bracket 10 and any one of the connection portions 20b of the mobile bracket 20 are collinear with each other, so that the mobile bracket 20 can be moved on the base bracket 10 by the guide portion G. In addition, without a separate guide rail structure for mounting the guide portion G on the base bracket 10, the weight of the seat device can be supported and the guide portion G can be mounted only by the extension portion 10b.

[0052] At the same time, if Figure 3 As shown, the driving mechanism 30 includes: a motor part 31, which is installed on the base support 10; and a conveying part 32, which extends from the motor part 31 in the extension direction of the guide part G and is connected to the mobile support 20, and when the motor part 31 is running, the mobile support 20 moves along the guide part G.

[0053] Here, the motor part 31 is installed on the base frame 10, and the conveying part 32 extending from the motor part 31 is connected to the moving frame 20. Therefore, when the motor part 31 is operated, the moving frame 20 can be moved on the base frame 10 through the conveying part 32.

[0054] The motor part 31 is configured to provide a rotational force, and the conveying part 32 is configured as a lead screw extending along the extension direction of the guide part G. The moving part 24 can be set on the moving bracket 20, and the moving part 24 is threadedly fastened to the lead screw and moves along the conveying part 32 that rotates when the motor part 31 runs.

[0055] Here, the motor part 31 may be driven by a switch manipulation of a user, and when a drive signal of the switch is input and the motor part 31 operates, the moving part 24 connected to the conveying part 32 configured as a lead screw is moved by the rotation of the conveying part 32, so that the moving bracket 20 moves together with the moving part 24. Therefore, the moving part 24 may be configured as a lead nut to be threadedly fastened to the lead screw, and the conveying part 32 may be configured to extend in the same direction as the extending direction of the guide part G, so that the moving part 24 can move along the guide part G.

[0056] In order to move the mobile bracket 20, in addition to the threaded connection structure of the lead screw, the above-mentioned drive mechanism 30 can also apply a rack and pinion structure or a hydraulic actuator structure. Various embodiments of this drive mechanism can be applied according to the design.

[0057] At the same time, the device of the present invention may further include: an auxiliary driving unit 50, a first end of the auxiliary driving unit 50 is rotatably connected to the vehicle body floor F, and a second end of the auxiliary driving unit 50 is rotatably connected to the mobile bracket 20, and the length of the auxiliary driving unit is variable to assist the lifting and lowering of the mobile bracket 20.

[0058] The auxiliary drive unit 50 has a variable length elastically and can be configured as a coil spring or a gas lift. Therefore, when the mobile bracket 20 is raised or lowered, the length of the auxiliary drive unit 50 changes in the lifting direction of the mobile bracket 20. Therefore, the auxiliary drive unit 50 provides an auxiliary force to the mobile bracket 20 in the moving direction of the mobile bracket 20.

[0059] That is, the auxiliary driving part 50 is configured to be variable in length in the extending direction of the guide part G, and to provide a repulsive force to the moving bracket 20 in the ascending direction of the moving bracket 20. Therefore, the auxiliary driving part 50 is configured to be variable in length in the extending direction of the guide part G, and to provide a repulsive force in the ascending direction of the moving bracket 20. Therefore, a force is added to the moving bracket 20 ascending by the driving mechanism 30, so that the seat frame S is smoothly ascended. The number of auxiliary driving parts 50 installed and the elastic force of the auxiliary driving part 50 can be set according to the performance of the driving mechanism 30.

[0060] As described above, in the exemplary embodiment of the present invention, since the base bracket 10 requiring a small installation range is provided in the lower space where the seat is installed, the structure interfering with the lower space is minimized, thereby improving space efficiency. Therefore, it is easy to install a control unit and a cable for driving the seat, and other devices can be provided in the ensured space.

[0061] Therefore, the seat device of the present invention ensures a space under the seat, thereby improving the atmosphere inside the vehicle due to improved space efficiency, and can be applied to various transportation tools as well as vehicles.

[0062] Although exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as included in the accompanying claims.

[0063] For convenience of explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upward", "downward", "front", "rear", "back", "inward", "outward", "inwardly", "outwardly", "inner", "external", "forward" and "rearward" are used to describe the features of the exemplary embodiments shown in the drawings with reference to their positions. It will be further understood that the term "connect" or its derivatives refer to both direct and indirect connections.

[0064] For the purpose of illustration and description, the foregoing description of specific exemplary embodiments of the present invention is given. The foregoing description is not intended to be exhaustive or limit the present invention to the precise form disclosed, and it is apparent that many modifications and variations are possible in light of the above teachings. Exemplary embodiments are selected and described to explain certain principles of the present invention and their practical applications so that those skilled in the art can make and utilize various exemplary embodiments of the present invention and various alternatives and modifications. The scope of the present invention is intended to be limited by the appended claims and their equivalents.

Claims

1. A vehicle seat device, comprising: a base bracket, fixed to the vehicle body floor; A movable bracket connected to the base bracket and raised and lowered in the vertical direction by a guide portion extending from the base bracket in the vertical direction; a driving mechanism mounted on the base support and connected to the mobile support, and providing power to enable the mobile support to selectively move along the guide portion; a seat track mounted on the moving bracket and raised and lowered together with the moving bracket, and the seat track enables the seat frame to move in a front-rear direction; as well as an auxiliary driving unit, a first end of the auxiliary driving unit being rotatably connected to the vehicle body floor, and a second end of the auxiliary driving unit being rotatably connected to the moving bracket, The length of the auxiliary driving part is variable to assist the lifting and lowering of the movable bracket.

2. The device according to claim 1, wherein: The guide portion is mounted to the base bracket by extending obliquely forward or rearward from the base bracket or vertically from the base bracket.

3. The device according to claim 1, wherein: The guide portion comprises: a guide rail extending in the up-down direction; and A sliding part is connected to the guide rail to slide on the guide rail.

4. The device according to claim 1, wherein: The base bracket is formed into a polygonal shape by a fixing portion fixed to the vehicle body floor and a plurality of extending portions extending upward from the fixing portion, and The moving bracket is formed in a polygonal shape by a mounting portion on which the seat rail is mounted and a plurality of connection portions extending downward from the mounting portion.

5. The device according to claim 4, wherein: One of the plurality of extensions of the base bracket and one of the plurality of connection portions of the moving bracket are collinear with each other, and the guide portion is provided at one of the plurality of extensions collinear with one of the plurality of connection portions.

6. The device according to claim 1, wherein: The driving mechanism comprises: A motor unit mounted on the base bracket; and The conveying portion extends from the motor portion in an extending direction of the guide portion and is connected to the moving bracket, and moves the moving bracket along the guide portion when the motor portion operates.

7. The device according to claim 6, wherein: The motor portion provides a rotational force, The conveying portion is a lead screw extending along the extension direction of the guide rail, and The moving bracket is provided with a moving part, which is threadedly fastened to the lead screw and moves along the conveying part that rotates when the motor part operates.

8. The device according to claim 1, wherein: The auxiliary driving portion has a variable length in an extending direction of the guide portion and provides a repulsive force to the moving bracket in a rising direction of the moving bracket.

9. The device according to claim 8, wherein: The length of the auxiliary driving part is elastically variable.

10. The device according to claim 1, wherein: The seat track comprises: A fixed guide rail fixed to the upper end of the movable bracket and extending in the front-rear direction; a movable rail connected to the fixed rail to slide on the fixed rail in the front-rear direction and on which the seat frame is mounted; and A driving motor is installed on the moving guide rail and moves the moving guide rail in the front-rear direction.

11. The device according to claim 10, wherein: The seat track further comprises: A guide rod, the movable guide rail is mounted on the guide rod, The drive motor is engaged with the guide rod to rotate the guide rod.

12. A vehicle seat device, the device comprising: a base bracket, fixed to the vehicle body floor; A movable bracket connected to the base bracket and raised and lowered in the vertical direction by a guide portion extending from the base bracket in the vertical direction; a driving mechanism mounted on the base support and connected to the mobile support, and providing power to enable the mobile support to selectively move along the guide portion; A seat track mounted on the moving bracket and raised and lowered together with the moving bracket, the seat track enabling the seat frame to move in a front-rear direction; The guide part comprises: A guide rail extending in the up-down direction; as well as a sliding portion connected to the guide rail to slide on the guide rail, The guide rails are paired to form a pair of guide rails, The sliding parts are paired to form a pair of sliding parts, The base bracket includes a pair of base plates, the pair of sliding parts are respectively installed on the inner surfaces of the pair of base plates, and The moving bracket is located between the pair of base plates, and the pair of guide rails are respectively installed at first opposite sides and second opposite sides of the moving bracket, and the pair of guide rails are connected to the pair of sliding parts.

13. The device according to claim 12, wherein: At least one support rod is provided on the base support, and The at least one support rod is coupled to each of the pair of base plates.

14. The device according to claim 12, wherein: The movable bracket comprises a pair of movable plates, and the pair of guide rails are respectively installed on surfaces of the pair of movable plates opposite to the pair of base plates.

15. The device according to claim 14, wherein: At least one connecting rod is disposed on the moving bracket, and the at least one connecting rod is combined with each of the pair of moving plates.

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