Seat for a vehicle

Abstract

The present disclosure relates to a seat for a vehicle. The present disclosure provides a seat for a vehicle capable of improving the rigidity of a frame to which a support member is attached. A seat for a vehicle according to one aspect of the present disclosure includes a seat cushion, a seat back, a frame that supports the seat cushion or the seat back, and a support member that is fixed to the frame. The frame has a plate portion and a rib that is provided so as to span an interface in the plate portion, wherein the interface is an interface between an attachment region of the plate portion in which the support member is superimposed and another region.

Description

Technical Field

[0001] This disclosure relates to seats for vehicles. Background Technology

[0002] In the frame of a seat in a vehicle such as an automobile, a support component, such as a bracket, is installed for purposes such as supporting the device components (see Japanese Patent Application Publication No. 2019-73184). The support component is fixed to the plate of the frame by means of fastening. Summary of the Invention

[0003] In a frame with installed support components, a decrease in stiffness occurs at the interface between the area where the support components are stacked and the other areas due to discontinuities in stiffness. Therefore, when a load is applied to the frame, strain that induces bending can propagate near this interface, making the frame prone to bending.

[0004] One aspect of this disclosure preferably provides a vehicle seat that can improve the rigidity of a frame on which support components are mounted.

[0005] One aspect of this disclosure relates to a vehicle seat comprising a seat cushion; a seat back; a frame supporting the seat cushion or seat back; and a support member fixed to the frame. The frame has a plate portion and ribs, the ribs being arranged to cross a boundary in the plate portion, wherein the boundary is the boundary between an installation area in the plate portion where the support member is superimposed and other areas. The installation area has two fixed areas located in the frame, wherein the support member is fixed to the two fixed areas. The ribs have a shape protruding toward the support member, and are sandwiched between the two fixed areas in the width direction of the ribs. The support member is bent with at least a portion thereof along the protruding shape of the ribs.

[0006] Based on the structure described above, stiffeners are used to reduce strain propagating at the interface between the installation area and other areas. Therefore, the stiffness of the frame can be improved.

[0007] Furthermore, the structure described above can improve the effect of reducing strain at the interface.

[0008] Furthermore, according to the structure described above, interference between the ribs and the rotating mechanism can be avoided, and strain at the interface can be reduced.

[0009] In one embodiment of this disclosure, the plate portion may be in the form of a strip plate. Ribs may extend along the longitudinal direction of the plate portion, crossing the boundary from the outside of the mounting area and extending to a position further inward than the two fixed areas. According to the structure described above, the effect of reducing strain through the ribs can be improved.

[0010] In one embodiment of this disclosure, a rotating mechanism may also be included, which is mounted on the plate portion in a manner that clamps the plate portion together with the supporting member. The rotating mechanism may have a shaft portion that passes through the plate portion and rotates on its axis. The supporting member may have a bearing that holds the shaft portion. According to the structure described above, the rigidity of the frame on which the rotating mechanism is mounted can be improved.

[0011] In one embodiment of this disclosure, the frame may be part of a seat cushion frame that supports the seat cushion. The rotating mechanism may be part of a mechanism that raises and lowers the seat cushion frame. According to the structure described above, the rigidity of the seat cushion frame equipped with the lifting mechanism can be improved. Attached Figure Description

[0012] Figure 1 This is a schematic perspective view of a vehicle seat according to the implementation method.

[0013] Figure 2 yes Figure 1 A schematic perspective view of the seat cushion frame, sliding mechanism, and lifting mechanism of a vehicle seat.

[0014] Figure 3 yes Figure 2 A schematic side view of the first side frame, the first link, and the supporting components of the seat cushion frame.

[0015] Figure 4 yes Figure 2 A schematic exploded perspective view of the first side frame, the first link, the rotating mechanism, and the supporting components of the seat cushion frame.

[0016] Figure 5 yes Figure 2 A schematic enlarged view of a portion of the first side frame.

[0017] Figure 6A yes Figure 3 A schematic cross-sectional view at the VIA-VIA line.

[0018] Figure 6B as well as Figure 6C Is with Figure 6A Schematic cross-sectional views of the ribs and supporting components in different implementations.

[0019] Figure 7 Is with Figure 6A Schematic cross-sectional views of the ribs and supporting components in different implementations. Detailed Implementation

[0020] The embodiments of which this disclosure is applied will be described below with reference to the accompanying drawings.

[0021] [1. First Embodiment]

[0022] [1-1. Structure]

[0023] Figure 1 The vehicle seat 1 shown includes a seat cushion 2, a seat back 3, a seat cushion frame 4, a backrest frame 5, a first sliding device 6A, a second sliding device 6B, a lifting device 7, and a support component 8.

[0024] The vehicle seat 1 of this embodiment is used as a passenger seat in a passenger vehicle. Furthermore, the directions indicated in the following description and the accompanying drawings represent the orientation of the vehicle seat 1 when it is installed in the vehicle (i.e., the passenger vehicle). In this embodiment, the seat width direction aligns with the left-right direction of the vehicle, and the front of the seat aligns with the front of the vehicle.

[0025] The seat cushion 2 is used to support the buttocks of the occupant. The seat back 3 is used to support the back of the occupant. The seat cushion frame 4 supports the seat cushion 2. The seat back frame 5 supports the seat back 3.

[0026] <Seat Cushion Frame>

[0027] like Figure 2 As shown, the seat frame 4 has a first side frame 41, a second side frame 42, a front plate 43, a first rod 44, and a second rod 45.

[0028] The first side frame 41 and the second side frame 42 each extend in the fore-and-aft direction of the seat and are plate-shaped components spaced apart from each other in the width direction of the seat. The first side frame 41 is located on the right side of the second side frame 42.

[0029] like Figure 3 As shown, the first side frame 41 has a plate-shaped portion 411 and a rib 412 disposed on the plate portion 411. The shape of the rib 412 will be described below.

[0030] Figure 2 The front panel 43 shown is configured to span the front ends of the first side frame 41 and the second side frame 42. A first rod 44 and a second rod 45 each connect the first side frame 41 and the second side frame 42 in the seat width direction at a position further back from the front panel 43 than the seat. The second rod 45 is positioned further back from the seat than the first rod 44.

[0031] <Sliding mechanism>

[0032] The first sliding device 6A and the second sliding device 6B cause the seat cushion frame 4 to slide in the front-to-back direction of the seat.

[0033] The first sliding device 6A has a movable guide rail connected to the first side frame 41 and a fixed guide rail supporting the movable guide rail so that it can slide. The second sliding device 6B has a movable guide rail connected to the second side frame 42 and a fixed guide rail supporting the movable guide rail so that it can slide.

[0034] Lifting device

[0035] The lifting device 7 is a mechanism that moves the seat cushion frame 4 up and down relative to the first sliding device 6A and the second sliding device 6B, thereby raising and lowering the seat cushion 2 and the seat cushion frame 4.

[0036] The lifting device 7 is driven by manual operation performed by the seated person. The lifting device 7 has a first link 71, a second link 72, a third link 73, a fourth link 74, a rotating mechanism 75, and an operating bracket 76.

[0037] The first link 71 connects the movable guide rail of the first side frame 41 and the first sliding device 6A. The first link 71 is mounted so that it can rotate relative to both the first side frame 41 and the first sliding device 6A.

[0038] The first link 71 is located inside the seat width direction of the first side frame 41. For example... Figure 3 As shown, the first link 71 has a sector gear portion 711, a connecting portion 712, and an opening 713.

[0039] The sector gear section 711 is rotatably mounted on the first side frame 41. Furthermore, the sector gear section 711 connects with the transmission gear 753 of the rotating mechanism 75 (see reference). Figure 4 ) meshing. The rotation axis of the sector gear section 711 is parallel to the width direction of the seat.

[0040] The first link 71 rotates (i.e., oscillates) relative to the first side frame 41 in the vertical direction by the rotation of the transmission gear 753 that meshes with the sector gear section 711 (i.e., the power transmitted from the transmission gear 753).

[0041] The connecting part 712 extends from the sector gear part 711 and is rotatably mounted on the movable guide rail of the first sliding device 6A. The opening 713 is provided in a region further back from the seat than the teeth of the sector gear part 711.

[0042] Figure 2 The second link 72 shown connects the first side frame 41 and the movable guide rail of the first sliding device 6A at a position closer to the front of the seat than the first link 71. The second link 72 works in conjunction with the first link 71 to move the first side frame 41 up and down.

[0043] Link 3 73 and link 4 74 connect the movable guide rail of the second side frame 42 and the second sliding device 6B. Link 3 73 is connected to link 1 71 via link 2 45. Link 3 73 and link 1 71 move synchronously. Link 4 74 is connected to link 2 72 via link 1 44. Link 4 74 and link 2 72 move synchronously.

[0044] The rotating mechanism 75 is a known mechanism that transmits the driving force input from the operating bracket 76 as a rotational force to the first link 71. For example... Figure 4 As shown, the rotating mechanism 75 is mounted on the plate portion 411 in such a way that it, together with the supporting member 8, clamps the plate portion 411 of the first side frame 41.

[0045] The rotating mechanism 75 includes a braking mechanism 751, a shaft 752, a transmission gear 753, a first bolt 754A, a second bolt 754B, and a third bolt 754C.

[0046] The braking mechanism 751 is configured to rotate the shaft 752 by a driving force input from the operating bracket 76. Furthermore, the braking mechanism 751 prevents the shaft 752 from reversing due to the weight of the occupant applied to the seat cushion 2. The braking mechanism 751 is located on the outer side of the first side frame 41 in the seat width direction.

[0047] The shaft portion 752 extends through the plate portion 411 and the support member 8 in the seat width direction. One end of the shaft portion 752 is located inside the support member 8 in the seat width direction (i.e., on the left side). The other end of the shaft portion 752 is held on the braking mechanism 751.

[0048] The transmission gear 753 is fixed to the shaft 752 and rotates through the shaft 752. The axis of rotation of the transmission gear 753 is parallel to the width direction of the seat. The transmission gear 753 is positioned inside the seat width direction of the first side frame 41. The transmission gear 753 rotates on its own axis but does not move relative to the first side frame 41.

[0049] Bolt 754A, bolt 754B, and bolt 754C each penetrate the first side frame 41 and the supporting component 8 in the seat width direction, and are respectively screwed into bearing 9A, bearing 9B, and bearing 9C.

[0050] The operating bracket 76 is configured to input the driving force for raising and lowering the seat cushion frame 4 into the rotating mechanism 75. For example, an operating lever for the user to perform the raising and lowering operation is connected to the operating bracket 76.

[0051] (Supporting components)

[0052] The supporting component 8 is a plate-shaped bracket that is fixed to the surface of the first side frame 41 on the inner side of the seat width direction.

[0053] The support member 8 is fastened to the first side frame 41 by means of the first bolt 754A, the second bolt 754B, and the third bolt 754C of the rotating mechanism 75, and the first bearing 9A, the second bearing 9B, and the third bearing 9C disposed on the inner side of the support member 8 in the width direction of the seat. The support member 8 has a main body 81, a bearing 82, and a curved portion 83.

[0054] The main body 81 is a plate-shaped section extending in the front-rear direction of the seat. The third bolt 754C, located in the opening 713 of the first link 71, passes through the rear end of the main body 81. The main body 81 covers the entire transmission gear 753 and the portion of the sector gear 711 that meshes with the transmission gear 753 from the inside in the width direction of the seat.

[0055] The bearing 82 is an opening located in the central portion of the main body 81. The bearing 82 holds the shaft portion 752 of the rotating mechanism 75. Specifically, the front end of the shaft portion 752 is rotatably inserted into the bearing 82.

[0056] A curved portion 83 is continuously provided from the front end of the main body 81. The curved portion 83 is fixed to the first side frame 41 at both the top and bottom. Specifically, a first bolt 754A is inserted through the upper end of the curved portion 83. In addition, a second bolt 754B is inserted through the lower end of the curved portion 83.

[0057] The bending portion 83 is bent in such a way that the central portion in the vertical direction protrudes inward in the seat width direction from the upper end and the lower end (i.e., the fixing portion fixed to the first side frame 41). Specifically, the bending portion 83 is bent in such a way that it forms a recess that does not interfere with the ribs 412 of the first side frame 41.

[0058] <Stretcher>

[0059] like Figure 5 As shown, the ribs 412 of the first side frame 41 are provided to cross the junction 41C in the plate portion 411, wherein the junction 41C is the junction of the mounting area 41A where the supporting member 8 is superimposed and other areas 41B in the plate portion 411.

[0060] Mounting area 41A has two fixing areas 41D for fixing the support component 8. One of the two fixing areas 41D is the fastening area of ​​the first bolt 754A and the first bearing 9A (i.e., the through hole of the first bolt 754A). The other of the two fixing areas 41D is the fastening area of ​​the second bolt 754B and the second bearing 9B (i.e., the through hole of the second bolt 754B).

[0061] Rib 412 extends along the front-to-back direction of the seat (i.e., the longitudinal direction of the plate portion 411). Rib 412 has a first extension portion 412A, an enlargement portion 412B, and a second extension portion 412C.

[0062] The first extension 412A forms the rear end of the rib 412. The second extension 412C forms the front end of the rib 412. The enlargement 412B connects the first extension 412A and the second extension 412C in the front-rear direction. The length (i.e., width) of the enlargement 412B in the direction orthogonal to the extension direction of the rib 412 is greater than the lengths of the first extension 412A and the second extension 412C in that direction.

[0063] The first extension 412A is sandwiched between two fixed regions 41D in the width direction (i.e., the vertical direction) of the rib 412. The first extension 412A overlaps with the front edge of the support member 8 in the width direction of the seat. The front edge of the support member 8 is part of the junction 41C and extends in the direction intersecting the longitudinal direction of the plate portion 411 (i.e., the vertical direction).

[0064] The front end of the first extension 412A is located behind the seat, relative to the two fixed areas 41D. Furthermore, the rear end of the first extension 412A and the enlargement 412B are located in front of the seat, relative to the junction 41C.

[0065] Therefore, the rib 412 crosses the junction 41C from the outside of the mounting area 41A in the longitudinal direction of the plate portion 411 and extends to a position further inward than the two fixed areas 41D.

[0066] Furthermore, the front end of the first extension 412A is located within the mounting area 41A. That is, the front end of the rib 412 overlaps with the support member 8 in the seat width direction. In addition, the front end of the rib 412 is located in front of the seat, closer to the shaft portion 752 of the rotating mechanism 75.

[0067] like Figure 6A As shown, the rib 412 has a shape that protrudes towards the support member 8. That is, the rib 412 protrudes inward in the width direction of the seat. In addition, a gap is provided between the rib 412 and the support member 8.

[0068] In this embodiment, the supporting member 8 is bent along the protruding shape of the rib 412. However, as Figure 6B As shown, the supporting member 8 may also not be bent along the protruding shape of the rib 412. Furthermore, as... Figure 6C As shown, the supporting component 8 can also be bent into a tunnel shape covering the ribs 412.

[0069] [1-2. Effects]

[0070] The following effects can be obtained by implementing the methods described in detail above.

[0071] (1a) The strain propagating at the junction 41C of the mounting area 41A and other areas 41B is reduced by the stiffener 412. Therefore, the stiffness of the first side frame 41 can be improved.

[0072] (1b) The stiffener 412 is sandwiched between two fixed regions 41D in the width direction of the stiffener 412, thereby improving the strain reduction effect at the junction 41C.

[0073] (1c) The rib 412 extends from the outside of the mounting area 41A across the junction 41C in the longitudinal direction of the plate portion 411 and extends to a position further inside than the two fixed areas 41D, thereby improving the effect of reducing strain by means of the rib 412.

[0074] (1d) The supporting component 8 is a bracket with a bearing 82, thereby increasing the rigidity of the first side frame 41 on which the rotating mechanism 75 is mounted.

[0075] (1e) The rotating mechanism 75 is part of the lifting device 7, thereby increasing the rigidity of the seat frame 4 on which the lifting mechanism is installed.

[0076] (1f) The rib 412 has a shape that protrudes toward the supporting member 8, thereby avoiding interference between the rib 412 and the rotating mechanism 75 and reducing the strain at the junction 41C.

[0077] [2. Other Implementation Methods]

[0078] The embodiments of this disclosure have been described above. However, this disclosure is not limited to the above embodiments, and various embodiments can be adopted.

[0079] (2a) In the vehicle seat of the above embodiment, such as Figure 7 As shown, the rib 412 may also have a shape that protrudes toward the opposite side of the support member 8 (i.e., the outer side in the seat width direction).

[0080] (2b) In the vehicle seat of the above embodiment, the mounting area may not have two fixed areas. Therefore, the ribs of the frame may not be sandwiched between the two fixed areas.

[0081] (2c) In the vehicle seat of the above embodiment, the lifting device may also be a device that rotates the transmission gear by a power source. That is, an electric, hydraulic, or pneumatic actuator as a rotating mechanism can be installed in the seat frame. In this case, the shaft of the actuator passes through the bearing of the supporting component.

[0082] (2d) In the vehicle seat of the above embodiment, the support member can be fixed to the seat frame by means other than fastening. For example, the support member can be fixed to the seat frame by welding.

[0083] (2e) In the vehicle seat of the above embodiment, the support member may not be fixed to a part of the seat cushion frame. For example, the support member may be fixed to a part of the backrest frame having a plate and ribs.

[0084] (2f) In the vehicle seat of the above embodiment, the support component may not have a bearing. For example, the support component may be a bracket that reinforces the frame of the vehicle seat.

[0085] (2g) The vehicle seat described above can also be used in automobiles other than passenger cars, and in other vehicles such as railway vehicles, ships and aircraft.

[0086] (2h) The functions of one constituent element in the above embodiments can be shared by multiple constituent elements, or the functions of multiple constituent elements can be integrated into one constituent element. Furthermore, a portion of the structure of the above embodiments can be omitted. Additionally, at least a portion of the structure of the above embodiments can be added to the structure of other embodiments, or at least a portion of the structure of the above embodiments can be substituted with the structure of other embodiments. Furthermore, all embodiments of the technical concept defined by the statements in the claims are embodiments of this disclosure.

Claims

1. A seat for a vehicle, characterized in that... have: Seat cushion; Seat backrest; A frame that supports the seat cushion or the seat back; as well as A supporting component, which is fixed to the frame, and The frame has plates and stiffeners. The ribs are arranged to cross the boundaries in the plate portion, wherein the boundaries are the mounting areas of the plate portion where the supporting members overlap and other areas. The mounting area has two fixed areas located on the frame, wherein the supporting component is fixed to the two fixed areas. The rib has a shape that protrudes towards the supporting member, and the rib is clamped by the two fixing regions in the width direction of the rib. The supporting component is bent at least a portion of itself along the raised shape of the rib.

2. The vehicle seat according to claim 1, characterized in that, The plate portion is in the shape of a strip plate. The ribs extend from the outside of the mounting area across the boundary in the longitudinal direction of the plate portion, and extend to a position further inward than the two fixed areas.

3. The vehicle seat according to claim 1 or 2, characterized in that, It also includes a rotating mechanism, which is mounted on the plate portion in such a way that it, together with the supporting member, clamps the plate portion. The rotating mechanism has a shaft portion that passes through the plate portion and rotates on the axis. The supporting component has a bearing that holds the shaft.

4. The vehicle seat according to claim 3, characterized in that, The frame is part of the cushion frame that supports the seat cushion. The rotating mechanism is part of the mechanism that raises and lowers the seat cushion frame.

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