Seat device for vehicle

Abstract

To provide a seat device for a vehicle in which a hip point of a seat body of the seat device of the vehicle can be set at a position that is the same height as a position of the other seat even in a vehicle where a lower side part of a door opening is arranged at a high position.SOLUTION: A seat device 10 for a vehicle is given in which a seat body 12 is rotationally transferred from a vehicular forward seating position to a lateral position facing a door opening D side through a seat movement mechanism 20. The seat movement mechanism 20 includes: an inclined lifting mechanism 50 which inclines the seat body 12 during movement of the seat body 12 so that a part of the seat body 12 does not interfere with a lower side part Db of the door opening D, and which lifts the seat body 12 or a part 12f of the seat body 12.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat device in which a seat body is rotated by a seat moving mechanism from a seating position facing forward of the vehicle to a sideways position facing a door opening side. [Background technology]

[0002] Patent Document 1 describes a technology related to a vehicle seat apparatus. As shown in FIG. 12 , the vehicle seat apparatus 100 described in Patent Document 1 includes a base plate 101 installed at a position higher than a lower edge Db of a door opening D. A rotary table 103 that horizontally rotates a seat body 105 is provided on the base plate 101. Furthermore, a slide frame 104 that slides the seat body 105 to the outside of the door opening D is provided on the rotary table 103, and a support frame 106 for the seat body 105 is attached to the slide frame 104. This allows the seat body 105 to rotate from a seating position facing forward of the vehicle to a sideways position facing the door opening D without interfering with the lower edge Db of the door opening D, and to move to the outside of the door opening D. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-337577 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the vehicle seat apparatus 100 described in Patent Document 1, the base plate 101 is installed at a position higher than the lower edge Db of the door opening D. As a result, the hip point of the seat cushion of the seat body 105 is generally higher than the hip points of other seats in the vehicle cabin. This reduces the headroom of the seated occupant, making the seated occupant feel cramped in the vehicle cabin. Furthermore, the ground clearance of the seat body 105 at the entry / exit position outside the door opening D is also high.

[0005] The present invention has been made to solve the above problems, and the problem that the present invention aims to solve is to make it possible to set the hip point of the seat body of a vehicle seat device to the same height as other seats, even in vehicles where the lower edge of the door opening is at a high position, thereby ensuring headroom for the seated occupant. [Means for solving the problem]

[0006] The above-mentioned problems are solved by the following inventions. A first invention is a vehicle seat device that rotates a seat body by a seat moving mechanism from a seating position facing forward of the vehicle to a sideways position facing a door opening, and the seat moving mechanism tilts the seat body so that a part of the seat body does not interfere with the lower edge of the door opening while the seat body is moving, and further includes an inclination / lifting mechanism that lifts the seat body or a part of the seat body.

[0007] According to the present invention, the seat movement mechanism tilts the seat body so that a portion of the seat body does not interfere with the lower edge of the door opening while the seat body is moving, and further includes a tilt-lift mechanism that lifts the seat body or a portion of the seat body. Therefore, when the seat body is in a seating position facing forward in the vehicle, a portion (lower portion) of the seat body can be positioned lower than the lower edge of the door opening. Therefore, even in a vehicle in which the lower edge of the door opening is higher than the floor of the vehicle compartment, the hip point of the seat body of the vehicle seat apparatus can be set at the same height as other seats.

[0008] According to a second aspect of the present invention, the seat movement mechanism includes a rotary table that rotates the seat body from a seating position facing forward to a sideways position facing the door opening, and an outer slide mechanism that moves the seat body to the outside of the door opening. The tilt-lift mechanism raises the seat body and the outer slide mechanism in a forward-tilted state so that the rear side of the seat body is higher than the front side. Therefore, as the seat body moves to the outside of the door opening due to the action of the outer slide mechanism, the seat body gradually lowers. This prevents interference between the occupant's head and the upper edge of the door opening. Furthermore, the ground clearance of the seat body can be reduced when it is in the entry / exit position outside the door opening.

[0009] According to the third aspect of the present invention, the inclination lifting mechanism uses a four-bar link mechanism to lift the seat body and the outer slide mechanism.

[0010] According to a fourth aspect of the present invention, a seat body includes a seat cushion, a seat back, a footrest that can be raised and lowered, and a reclining mechanism that tilts the seat back relative to the seat cushion. The tilt-lifting mechanism raises the footrest of the seat body while the seat body is moving, and the reclining mechanism tilts the seat back backward relative to the seat cushion. In other words, by raising the footrest of the seat body, interference between the seat body and the lower edge of the door opening can be avoided. Furthermore, because the seat back is tilted backward, the occupant does not feel uncomfortable even when the footrest is raised. [Effects of the Invention]

[0011] According to the present invention, even in a vehicle in which the lower edge of the door opening is positioned high, the hip point of the seat body of the vehicle seat device can be set at the same height as other seats, thereby ensuring headroom for the seated occupant. [Brief explanation of the drawings]

[0012] [Figure 1]1 is a perspective view of a vehicle compartment of a vehicle equipped with a vehicle seat device according to a first embodiment of the present invention, viewed from above and rear left. [Figure 2] 1 is a schematic side view of a vehicle seat device in a seating position facing forward in a vehicle interior; [Figure 3] 1 is a side view of a vehicle seat apparatus in a state where a four-bar link mechanism is operating in a lateral position facing a door opening side; [Figure 4] 10 is a side view of the vehicle seat device in the lateral position, showing a state in which the four-bar link mechanism and the outer slide mechanism are operating. FIG. [Figure 5] 10 is a side view of the vehicle seat device in the lateral position, showing a state in which the four-bar link mechanism, the outer slide mechanism, and the lifting link mechanism are operating. FIG. [Figure 6] 6 is a rear view (view taken along arrows VI-VI in FIG. 3) of the outer slide mechanism and the lifting link mechanism. [Figure 7] 2 is a side view showing a reclining mechanism of a seat body of the vehicle seat device. FIG. [Figure 8] FIG. 2 is a wiring block diagram of the vehicle seat device. [Figure 9] 1 is a plan view of a vehicle seat device in a seating position facing forward in a vehicle interior; [Figure 10] 1 is a plan view of a vehicle seat device in a horizontal position facing a door opening side; [Figure 11] FIG. 10 is a side view illustrating a modified example of the vehicle seat device. [Figure 12] FIG. 1 is a side view showing a conventional vehicle seat device. DETAILED DESCRIPTION OF THE INVENTION

[0013] [Embodiment 1] A vehicle seat device according to a first embodiment of the present invention will be described below with reference to Fig. 1 to Fig. 11. The vehicle seat device 10 according to this embodiment is a seat device used as a passenger seat in a vehicle compartment R. Here, front, rear, left, right, top and bottom in the drawings correspond to front, rear, left, right, top and bottom of a vehicle equipped with the vehicle seat device 10 according to this embodiment.

[0014] <Overview of the Vehicle Seat Device 10> As shown in Fig. 1, the vehicle seat apparatus 10 is installed in a vehicle in which a scuff plate Db constituting the lower edge of a door opening D is positioned relatively high relative to a floor panel F of the vehicle compartment R. The vehicle seat apparatus 10 includes a seat body 12 on which an occupant sits, and a seat moving mechanism 20 that moves the seat body 12 from a seating position inside the vehicle compartment R to a boarding and disembarking position outside the vehicle compartment R. As shown in the schematic side views of Figs. 2 to 5, the seat moving mechanism 20 includes a front-rear sliding mechanism 30 installed on the floor panel F of the vehicle compartment R, and a rotation mechanism 40 installed on a front-rear sliding base 35 of the front-rear sliding mechanism 30.

[0015] The rotation mechanism 40 is a mechanism for rotating the seat body 12 from a seating position facing forward of the vehicle to a sideways position facing the door opening D, and a tilting and lifting mechanism 50 that can lift the seat body 12 in a forward tilted state is provided on a rotation table 45 of the rotation mechanism 40, as shown in FIG. 3 etc. The seat moving mechanism 20 is provided with an external slide mechanism 70 (see FIG. 4) that slides the seat body 12 to the outside of the door opening D, and an external lifting and lowering mechanism 60 (see FIG. 5) that lifts and lowers the seat body 12 outside the vehicle compartment R, on the tilting and lifting table 55 of the tilting and lifting mechanism 50. The seat body 12 is also provided with a reclining mechanism 80 (see FIG. 7) that tilts the seat back 12b relative to the seat cushion 12c. Furthermore, as shown in FIG. 8, the vehicle seat device 10 includes an ECU that operates the motors M1 to M6 of the front-rear slide mechanism 30, the rotation mechanism 40, the tilt lift mechanism 50, the external lift mechanism 60, the external slide mechanism 70, and the reclining mechanism 80.

[0016] <Regarding the front-rear slide mechanism 30> The longitudinal sliding mechanism 30 is a mechanism for moving the seat body 12 in the longitudinal direction of the vehicle within the vehicle compartment R. As shown in FIGS. 2 and 3 , the longitudinal sliding mechanism 30 includes a fixed base 31 installed on the floor panel F and a pair of left and right fixed rails 33 attached to the fixed base 31 so as to extend in the longitudinal direction of the vehicle. As shown in FIG. 3 and other figures, the pair of left and right fixed rails 33 support the left and right edges of a longitudinal sliding base 35 in a state in which the longitudinal sliding base 35 can slide forward and backward. The longitudinal sliding mechanism 30 includes a motor M2 that slides the longitudinal sliding base 35 forward and backward along the fixed rails 33, and a drive mechanism 37.

[0017] <About the rotation mechanism 40> The rotation mechanism 40 is a mechanism that horizontally rotates the seat body 12 by approximately 100° from a seating position facing forward of the vehicle to a sideways position facing the door opening D. As shown in Figures 2 and 3, the rotation mechanism 40 includes an inner ring 41 fixed on the front-rear slide base 35 so that its axis is vertical, and an outer ring 43 that is rotatably connected coaxially to the inner ring 41, and the upper surface of the outer ring 43 is fixed to a rotary table 45. The rotation mechanism 40 includes a motor M1 that rotates the outer ring 43 coaxially with respect to the inner ring 41, and a drive mechanism (not shown).

[0018] <Regarding the inclined lifting mechanism 50> As shown in FIG. 3 and other figures, the inclined lifting mechanism 50 is a mechanism for preventing interference between the seat body 12 and the scuff plate Db of the door opening D by lifting the seat body 12 in a forward tilted state. The inclined lifting mechanism 50 includes a pair of four-bar link mechanisms each consisting of relatively short left and right front links 51 and relatively long left and right rear links 52. The lower ends of the front links 51 and the rear links 52 are connected to the vertical plate portion of the rotary table 45 in a vertically rotatable state, and the upper ends of the front links 51 and the rear links 52 are connected to the vertical plate portion of the inclined lifting table 55 in a vertically rotatable state.

[0019] As a result, when the front link 51 and the rear link 52 are in a lying position, the inclined lift table 55 is held horizontally stacked on the rotary table 45, as shown in Fig. 2. When the front link 51 and the rear link 52 rotate in the upright direction (rotate left) as shown in Fig. 3, the inclined lift table 55 rises in an inclined state so that the rear side of the seat body 12 becomes higher. The inclined lift mechanism 50 is provided with a motor M6 that rotates the front link 51 or the rear link 52 in the upright direction or lying direction, and a drive mechanism (not shown).

[0020] <Regarding the external lifting mechanism 60> 4 and 5, the external lifting mechanism 60 is a mechanism that lifts and lowers the seat body 12 outside the vehicle compartment R. The external lifting mechanism 60 includes a lateral slide base 62 configured to be slidable in the front-to-rear direction of the seat body 12 on the inclined lifting table 55, a four-bar link mechanism 64 whose base end is connected to the lateral slide base 62, and a lifting base 65 connected to the tip end of the four-bar link mechanism 64. The seat body 12 is supported on the lifting base 65 via an external slide mechanism 70.

[0021] 4 and 5, in the external lifting mechanism 60, as the horizontal slide base 62 slides forward from the rear end position to the front end position of the inclined lifting table 55, the four-bar link mechanism 64 rotates downward due to the weight of the seat body 12, etc., and the lifting base 65 supporting the seat body 12, etc., moves forward and downward. Also, as the horizontal slide base 62 slides backward from the front end position to the rear end position of the inclined lifting table 55, the four-bar link mechanism 64 rotates upward, and the lifting base 65 supporting the seat body 12, etc., moves backward and upward. As shown in the rear view of FIG. 6, the external lifting mechanism 60 includes a motor M5 and a drive mechanism 68 for sliding the horizontal slide base 62 back and forth relative to the inclined lifting table 55.

[0022] <About the outer slide mechanism 70> As shown in Figs. 3 and 4, the external slide mechanism 70 is a mechanism for sliding the seat body 12 on the inclined lift table 55 (on the lift base 65) to the outside of the door opening D. As shown in Figs. 4 to 6, the external slide mechanism 70 is provided with a seat base 72 that supports the seat body 12. The seat base 72 is configured to be able to slide in the front-to-rear direction of the seat body 12 relative to the lift base 65 of the external lift mechanism 60. As shown in Fig. 6, the external slide mechanism 70 is provided with a motor M3 and a drive mechanism 75 for sliding the seat base 72 back and forth relative to the lift base 65.

[0023] <About the seat body 12> 1 and 7, the seat main body 12 includes a seat cushion 12c, a seat back 12b, and a reclining mechanism 80 (see FIG. 7), and the framework of the seat cushion 12c is fixed to the seat base 72 of the outer slide mechanism 70. Also, as shown in FIGS. 4 and 5, a footrest 12f is attached to the framework of the seat cushion 12c. The reclining mechanism 80 is a mechanism that changes the tilt angle of the seat back 12b relative to the seat cushion 12c, and as shown in FIG. 7, includes a motor M4 and a drive mechanism 85 that includes an internal gear 85e, an external gear 85p, etc.

[0024] <ECUについて> The ECU is a control device for moving the seat body 12 between a seating position within the vehicle interior R and a boarding / getting-in position outside the vehicle interior R based on the occupant's getting-out or getting-in operation. That is, as shown in FIG. 8 , the ECU controls the motors M1 to M6 of the forward / backward slide mechanism 30, the rotation mechanism 40, the tilt lift mechanism 50, the external lift mechanism 60, the external slide mechanism 70, and the reclining mechanism 80. A get-out signal or a get-in signal can be input to the ECU from a remote control or a fixed operation switch (not shown). While the get-out signal or the get-in signal is continuously input, the ECU operates the motors M1 to M6 at predetermined timings based on the signal. Furthermore, when the input of the get-out signal or the get-in signal stops, the ECU stops the motors M1 to M6 and interrupts the get-out or get-in operation.

[0025] <Operation of the Vehicle Seat Device 10> When the seat body 12 is moved from a seating position inside the vehicle compartment R (see FIGS. 2, 9, etc.) to a boarding / exiting position outside the vehicle compartment R (see FIG. 5), the vehicle door Dr is opened and then the exit switch is operated. As a result, the ECU first operates the motor M1 of the rotation mechanism 40, causing the seat body 12 to begin rotating horizontally to the left toward the door opening D. Next, the motor M4 of the reclining mechanism 80 of the seat body 12 operates to tilt the seat back 12b rearward, thereby avoiding interference between the occupant's head and the upper edge Da of the door opening D. Next, the motor M2 of the front-rear sliding mechanism 30 operates, causing the seat body 12 to slide forward. That is, by the seat body 12 sliding forward while rotating horizontally to the left, interference between the seat body 12 and the center pillar P of the vehicle (see FIGS. 9 and 10) can be avoided during the rotation.

[0026] Furthermore, during the left horizontal rotation of the seat body 12, the motor M6 of the inclination lifting mechanism 50 operates, and the front link 51 and the rear link 52 rotate left in the upright direction, causing the seat body 12 to rise in a forward tilted state, as shown in Fig. 3. When the motor M6 of the inclination lifting mechanism 50 stops, the seat body 12 is held at a predetermined height in a forward tilted state, and the footrest 12f of the seat body 12 becomes higher than the scuff plate Db of the door opening D. As a result, as shown in Fig. 10, the footrest 12f of the seat body 12 does not interfere with the scuff plate Db of the door opening D while the seat body 12 is rotated by approximately 100° by the rotation mechanism 40.

[0027] During the process of horizontally rotating the seat body 12 to the left, when the seat body 12 faces the door opening D, the motor M3 of the external slide mechanism 70 is activated, and the seat body 12 slides outward (forward) relative to the lifting base 65 of the external lifting mechanism 60, as shown in FIGS. 3 and 4. Here, as shown in FIG. 3, because the seat body 12 is in a forward tilted state due to the operation of the tilting and lifting mechanism 50, the level of the seat body 12 gradually lowers as the seat body 12 slides forward, ensuring a space between the occupant's head and the upper edge Da of the door opening D. Then, when the seat body 12 slides forward to the forward limit position as shown in FIG. 4, the motor M5 of the external lifting mechanism 60 is driven. As a result, as shown in FIG. 5, the horizontal slide base 62 of the external lifting mechanism 60 slides forward on the tilting and lifting table 55 of the tilting and lifting mechanism 50 from the rear end position to the front end position, and the four-bar link mechanism 64 rotates downward, causing the seat body 12 to descend to the entry / exit position.

[0028] When the seat body 12 is moved from the boarding / alighting position outside the vehicle interior R to the seating position inside the vehicle interior R, the boarding switch is operated. This causes the ECU to operate the motors M1 to M6 of the longitudinal slide mechanism 30, the rotation mechanism 40, the tilt lifting mechanism 50, the external lifting / alighting mechanism 60, the external slide mechanism 70, and the reclining mechanism 80 of the seat body 12 in the reverse procedure of the above-mentioned boarding / alighting procedure. This causes the seat body 12 to return from the boarding / alighting position outside the vehicle interior R to the seating position inside the vehicle interior R (see FIGS. 1, 2, and 9).

[0029] <Comparison between terms used in this embodiment and terms related to the present invention> The scuff plate Db of the door opening D in this embodiment corresponds to the lower edge of the door opening in the present invention. The front link 51 and the rear link 52 of the inclined lifting mechanism 50 correspond to the four-bar link mechanism in the present invention.

[0030] <Advantages of the vehicle seat device 10 according to this embodiment> In the vehicle seat apparatus 10 according to this embodiment, the seat moving mechanism 20 includes an inclined lifting mechanism 50 that raises the seat body 12 so that the footrest 12f of the seat body 12 does not interfere with the scuff plate Db (lower edge portion) of the door opening D while the seat body 12 is moving. Therefore, when the seat body 12 is in a seating position facing forward, the footrest 12f of the seat body 12 can be positioned lower than the scuff plate Db of the door opening D. Therefore, even in a vehicle in which the scuff plate Db is positioned higher than the floor panel F of the vehicle interior R, the hip point of the seat body 12 of the vehicle seat apparatus 10 can be set to the same height as other seats. Furthermore, the inclined lifting mechanism 50 raises the seat body 12 in a forward-tilted state so that the rear side of the seat body 12 is higher than the front side. Therefore, when the seat body 12 moves outward of the door opening D due to the action of the outer slide mechanism 70, interference between the occupant's head and the upper edge Da of the door opening D can be avoided. Furthermore, the height of the seat body 12 from the ground at the entry / exit position outside the door opening D can be reduced.

[0031] <Example of change> The present invention is not limited to the above-described embodiment and may be modified within the scope of the present invention. For example, in this embodiment, as shown in FIG. 3 and other figures, the tilt-lifting mechanism 50 raises the seat body 12 in a forward tilted state, thereby preventing interference between the footrest 12f of the seat body 12 and the scuff plate Db of the door opening D. However, as shown in FIG. 11 , instead of the tilt-lifting mechanism 50, a footrest lifting mechanism 120 can be provided that directly raises the footrest 12f of the seat body 12. However, raising the footrest 12f places the seat occupant in an uncomfortable position. For this reason, when the ECU drives the motor M7 of the footrest lifting mechanism 120 in the lifting direction, it is preferable to drive the motor M4 of the reclining mechanism 80 in the rearward tilting direction of the seat back 12b. In other words, the footrest lifting mechanism 120 and the reclining mechanism 80 can be used as the tilt-lifting mechanism of the present invention.

[0032] Furthermore, in this embodiment, the vehicle seat device 10 including the external lifting mechanism 60 has been exemplified, but the present invention can also be applied to a vehicle seat device that does not include the external lifting mechanism 60. [Explanation of symbols]

[0033] 10. Vehicle seat device 12 Seat body 12c···Seat cushion 12b Seat back 12f···Footrest 20 Seat movement mechanism 40 Rotation mechanism 45 Rotary table 50. Inclined lift mechanism 51 Front link (four-section link) 52 Rear link (four-section link) 70....External slide mechanism 80 Reclining mechanism (tilt lift mechanism) 120···Footrest lifting mechanism (tilt lifting mechanism) D Door opening Db Scuff plate (bottom edge of door opening) F·····Floor panel

Claims

1. A vehicle seat device in which a seat body is rotated and moved by a seat moving mechanism from a seating position facing forward of the vehicle to a sideways position facing a door opening side, The seat moving mechanism tilts the seat body so that a part of the seat body does not interfere with the lower edge of the door opening while the seat body is moving, and further includes a tilt lifting mechanism that lifts the seat body or a part of the seat body.

2. 2. The vehicle seat device according to claim 1, The seat moving mechanism includes: a rotating table that rotates the seat body from a seating position facing forward of the vehicle to a sideways position facing the door opening side; an outer slide mechanism that moves the seat body to the outside of the door opening; It is equipped with The inclination lifting mechanism lifts the seat body and the outer slide mechanism in a forward tilted state so that the rear side of the seat body is higher than the front side.

3. 3. The vehicle seat device according to claim 2, The inclination lifting mechanism uses a four-bar link mechanism to lift the seat body and the outer slide mechanism.

4. 2. The vehicle seat device according to claim 1, the seat body includes a seat cushion, a seat back, a footrest configured to be able to move up and down, and a reclining mechanism that tilts the seat back relative to the seat cushion; The inclination lifting mechanism lifts the footrest of the seat body while the seat body is moving, and the reclining mechanism tilts the seat back backward relative to the seat cushion.

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