Vehicle seat

Abstract

To provide a vehicle seat capable of improving the efficiency of assembling work.SOLUTION: The vehicle seat includes a cushion frame 10, a back frame 20, and a connecting bracket 60 that connects a seat rear portion of the cushion frame 10 and a lower portion of the back frame 20. The connecting bracket 60 is attached to the cushion side frame 11 by a fastening member 70, and fastening holes 66 and 16 for fastening the fastening member 70 are formed in the connecting bracket 60 and the cushion side frame 11, respectively. A peripheral edge portion of the fastening hole 66 at the connecting bracket 60 projects-out toward the seat transverse direction inner side, and the fastening hole 66 extends in the projecting-out direction.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a connecting bracket that connects a cushion frame and a back frame. [Background technology]

[0002] Conventionally, in vehicle seats equipped with a reclining device, there have been known devices in which the shape and arrangement of the connecting bracket that connects the rear portion of the cushion frame to the lower end portion of the back frame have been devised in order to ensure frame rigidity around the device (see, for example, Patent Document 1).

[0003] The vehicle seat equipped with a reclining device described in Patent Document 1 includes a plate-shaped base bracket that is connected to the outer surface of the cushion frame and the outer surface of the back frame. The base bracket has one end attached to the outer surface of the reclining unit provided on the outer surface of the back frame, and the other end bolted to the outer surface of the cushion frame. The base bracket protects the reclining unit, which is the main body of the reclining device, from the outside and ensures the frame rigidity around the device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-240427 Summary of the Invention [Problem to be solved by the invention]

[0005] However, since the assembly process for vehicle seats is relatively complicated, there has been a demand for improving the efficiency of the assembly process, for example, by reducing the number of component parts. In particular, in vehicle seats equipped with a reclining device such as that described in Patent Document 1, the device is made up of multiple components, and the assembly work is complex, so there is a need to make the assembly work more efficient.

[0006] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle seat that can be assembled more efficiently. Another object of the present invention is to provide a vehicle seat equipped with a reclining device that allows for efficient assembly of the device. Another object of the present invention is to provide a vehicle seat that can reduce the number of components. [Means for solving the problem]

[0007] The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat including a cushion frame, a back frame, and a connecting bracket connecting a rear portion of the cushion frame to a lower portion of the back frame, wherein the cushion frame has cushion side frames arranged on the left and right sides in the seat width direction, the connecting bracket is attached to the cushion side frames by fastening members, the connecting bracket and the cushion side frame are each formed with fastening holes for fastening the fastening members, and the peripheral portion of the fastening hole in the connecting bracket protrudes toward one side in the seat width direction, and the fastening hole extends in the protruding direction. The above configuration makes it possible to improve the efficiency of assembly work, specifically to realize a vehicle seat that allows the number of component parts to be reduced. In more detail, the connecting bracket and the cushion side frame each have a fastening hole for fastening a fastening member, and the periphery of the fastening hole in the connecting bracket protrudes toward one side in the seat width direction, with the fastening hole extending in the protruding direction. Therefore, while the connecting bracket is generally fixed to the cushion side frame using a fastening bolt and a fastening nut, this configuration eliminates the need for a fastening nut. Specifically, the protruding portion of the connecting bracket that surrounds the fastening hole can serve as a fastening nut. For example, a fastening bolt can be fastened by tapping the inside of the fastening hole. This will enable the realization of a vehicle seat that achieves greater efficiency in assembling the connecting brackets (eliminating the need for fastening nuts, reducing the number of parts, and shortening the work process).

[0008] In this case, it is preferable that a reclining device be provided that rotatably connects the back frame to the cushion frame, the reclining device be attached to the outer surface of the back frame and have a reclining unit that restricts the rotation of the back frame, and the connecting bracket be attached to the outer surface of the back frame. With the above configuration, a vehicle seat equipped with a reclining device can be realized that simplifies the assembly work of the device.

[0009] In this case, the back frame has back side frames arranged on the left and right sides in the seat width direction, and the peripheral portion of the fastening hole protrudes more inward in the seat width direction than the main body of the connecting bracket, and is arranged in a position that does not overlap with the back side frames in the seat width direction. As described above, the peripheral edge portion of the fastening hole protrudes inward in the seat width direction, so that the connecting bracket can be arranged compactly in the seat width direction. Furthermore, as described above, the peripheral portion of the fastening hole is positioned so as not to overlap with the back side frame in the seat width direction, thereby suppressing interference between the connecting bracket and the back side frame when the back frame rotates in the fore-and-aft direction of the seat.

[0010] In this case, the connecting bracket is attached to the cushion side frame by fastening the fastening member from the outside in the seat width direction, and the fastening member protrudes toward the inside in the seat width direction beyond the peripheral portion of the fastening hole and is positioned in a position that does not overlap with the back side frame in the seat width direction. With the above configuration, the fastening member can be assembled more efficiently than when the fastening member is fastened from the inside in the seat width direction. Furthermore, with the above configuration, interference between the fastening member and the back side frame can be suppressed when the back frame rotates in the front-rear direction of the seat.

[0011] In this case, the cushion side frame has a stepped shape bent in the seat width direction and includes a main body wall portion extending longitudinally in the front-to-rear direction of the seat, an outer wall portion attached to the outer surface of the connecting bracket and positioned further outward in the seat width direction than the main body wall portion, and a connecting wall portion connecting the main body wall portion and the outer wall portion, and the main body portion of the connecting bracket is preferably positioned between the main body wall portion and the outer wall portion in the seat width direction. With the above configuration, the connecting bracket can be arranged compactly in the seat width direction.

[0012] In this case, it is preferable that the peripheral edge portion of the fastening hole protrudes inward in the seat width direction beyond the main body wall portion of the cushion side frame. With the above configuration, the fastening length between the fastening member and the fastening hole can be easily extended, thereby increasing the fastening strength of the connecting bracket to the cushion side frame.

[0013] In this case, a height link device is provided that connects the cushion frame to the vehicle floor so that it can be raised and lowered, and the height link device has left and right links that are provided between the cushion frame and the vehicle floor, and the peripheral portion of the fastening hole is positioned in a position that does not overlap with the links in the seat width direction. With the above configuration, interference between the connecting bracket (the peripheral portion of the fastening hole) and the link can be suppressed when the height link device is operated.

[0014] In this case, the cushion frame has a connecting frame that connects the rear portions of the left and right cushion side frames, and the connecting frame connects the left and right links, and it is preferable that the peripheral portions of the fastening holes, the back side frames, and the links are arranged at different positions in the seat width direction. With the above configuration, when the reclining device and the height link device are operated, interference between the connecting bracket (the peripheral portion of the fastening hole), the back side frame, and the link can be suppressed.

[0015] In this case, the cushion frame has a connecting frame that connects the rear portions of the left and right cushion side frames, the connecting bracket is attached to the cushion side frames by a first fastening member and a second fastening member, and the first fastening member and the second fastening member are preferably arranged around the reclining unit and around the connecting frame. Furthermore, it is preferable that the first fastening member is positioned further forward in the seat than the second fastening member, the first fastening member is positioned at a position overlapping with the connecting frame in the fore-and-aft direction of the seat and at a position overlapping with the reclining unit in the up-and-down direction, and the second fastening member is positioned at a position overlapping with the reclining unit in the fore-and-aft direction of the seat and at a position overlapping with the connecting frame in the up-and-down direction. The above configuration can increase the assembly rigidity of the reclining unit and the connecting frame. [Effects of the Invention]

[0016] According to the present invention, it is possible to realize a vehicle seat that can improve the efficiency of assembly work, specifically, reduce the number of components. Specifically, the protruding portion of the connecting bracket that is located on the periphery of the fastening hole can be used instead of a fastening nut. For example, the inside of the fastening hole can be tapped, and a fastening bolt can be fastened. Furthermore, according to the present invention, a vehicle seat equipped with a reclining device can be realized in which the assembly work of the device can be made more efficient. Furthermore, according to the present invention, the connecting bracket can be arranged compactly in the seat width direction, and interference between the connecting bracket and the back side frame can be reduced when the back frame rotates in the front-rear direction of the seat. Furthermore, according to the present invention, the fastening members can be efficiently assembled, and interference between the fastening members and the back side frames can be suppressed when the back frame rotates. Furthermore, according to the present invention, the fastening strength of the connecting bracket to the cushion side frame can be increased. Furthermore, according to the present invention, interference between the connecting bracket and the link can be suppressed when the height link device is operated. Furthermore, according to the present invention, the assembly rigidity of the reclining unit and the connecting frame can be increased. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing a seat frame that forms the framework of the vehicle seat. [Figure 3] 3 is an enlarged view of a main part of FIG. 2, showing the periphery of a reclining device. FIG. [Figure 4] FIG. 2 is an exploded perspective view of the reclining device and the connecting bracket. [Figure 5A]FIG. [Figure 5B] FIG. 10 is a perspective view of the connecting bracket as seen from another angle. [Figure 6] FIG. 10 is a perspective view of the reclining device and its surroundings viewed from a different angle. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 6, illustrating the positional relationship between the connecting bracket, the back side frame, and the link. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to an embodiment of the present invention will now be described with reference to FIGS. This embodiment relates to an invention of a vehicle seat having a connecting bracket that connects a cushion frame and a back frame, the connecting bracket being attached to the cushion frame (cushion side frame) by a fastening member, the connecting bracket and the cushion side frame each having a fastening hole for fastening the fastening member, the peripheral portion of the fastening hole in the connecting bracket protruding toward one side (inside) in the seat width direction, and the fastening hole extending in the protruding direction. The side of the seat back of a vehicle seat on which an occupant sits is the front side of the seat.

[0019] As shown in FIG. 1, the vehicle seat S of this embodiment is a vehicle seat, and is mainly composed of a seat body having a seat cushion 1 and a seat back 2, and as shown in FIG. 2, a rail device 30 that supports the seat body so that it can move back and forth relative to the vehicle floor, a height link device 40 that connects the seat body to the vehicle floor so that it can be raised and lowered, a reclining device 50 that connects the seat back 2 to the seat cushion 1 so that it can rotate, and a connecting bracket 60 that connects the seat cushion 1 and the seat back 2.

[0020] As shown in FIG. 1, the seat cushion 1 is a seating portion that supports an occupant from below, and is configured by placing a cushion material 1a on a cushion frame 10 shown in FIG. 2, which serves as a skeleton, and covering it with a skin material 1b. The seat back 2 is a backrest portion that supports the occupant from behind, and is configured by placing a cushion material 2a on a back frame 20 shown in FIG. 2 that serves as a skeleton, and covering it with a skin material 2b. The cushion frame 10 and the back frame 20 are connected by a connecting bracket 60.

[0021] As shown in Figure 2, the cushion frame 10 is a roughly rectangular frame-like body and is mainly composed of cushion side frames 11 arranged on the left and right sides, plate-shaped pan frames 12 installed at the front end portions of each cushion side frame 11, a front connecting frame 13 connecting the front portions of each cushion side frame 11, a rear connecting frame 14 connecting the rear portions of each cushion side frame 11, and multiple elastic springs 15 hooked onto the pan frames 12 and the rear connecting frame 14 and extending in a snake-like shape in the fore-and-aft direction of the seat.

[0022] The cushion side frame 11 is a plate-shaped frame that is long in the front-rear direction of the seat. A reclining device 50 is attached to the rear portion of the cushion side frame 11 via a connecting bracket 60, and a rail device 30 is attached to the lower portion thereof via a height link device 40.

[0023] As shown in Figures 3 and 4, the rear portion of the cushion side frame 11 has a stepped shape bent in the seat width direction and includes a main body wall portion 11a extending longitudinally in the seat front-to-rear direction, an outer wall portion 11b positioned outside the main body wall portion 11a in the seat width direction, and a connecting wall portion 11c connecting the main body wall portion 11a and the outer wall portion 11b. A connecting bracket 60 is attached to the inner surface of the outer wall portion 11b by means of fastening members .

[0024] The cushion side frame 11 has an upper end flange 11d and a lower end flange 11e formed at its upper and lower ends, respectively, which are bent and protrude toward one side in the seat width direction (strictly speaking, toward the outside). The upper end flange 11d and the lower end flange 11e extend in the seat front-rear direction from a position on the cushion side frame 11 where the reclining device 50 is attached to a position where the pan frame 12 is attached.

[0025] As shown in FIG. 2, the pan frame 12 is a plate-shaped erection frame that supports the thighs of the occupant, and its side portions in the seat width direction are placed on and attached to the upper surfaces of the cushion side frames 11. The front connecting frame 13 and the rear connecting frame 14 are each a pipe-shaped frame that connects the left and right cushion side frames 11 and also connects the left and right links (first link 41, second link 42). The elastic springs 15 are elastic support members that support the buttocks of the occupant, and a plurality of elastic springs 15 are provided at predetermined intervals in the seat width direction. The front end portion of the elastic spring 15 is hooked to a spring hook portion 12a formed on the upper surface of the pan frame 12. The rear end portion of the elastic spring 15 is attached to the rear connecting frame 14 via a hook member.

[0026] As shown in FIG. 2, the back frame 20 is a substantially rectangular frame-like body and is mainly composed of back side frames 21 arranged on the left and right sides, an inverted U-shaped upper frame 22 connecting the upper end portions of each back side frame 21, a plate-shaped lower frame 23 connecting the lower end portions of each back side frame 21, and elastic springs (not shown) that are hooked onto each back side frame 21 and extend in a snake-like shape. The backside frame 21 is a sheet metal member that extends in the vertical direction and has a generally C-shaped cross section, and its lower end portion is connected to the rear end portion of the cushion side frame 11 via the reclining device 50 and a connecting bracket 60. In the above configuration, the back frame 20 is capable of rotating relative to the cushion frame 10.

[0027] As shown in Figure 2, the rail device 30 is arranged between the seat body and the vehicle floor in the vertical direction, and is mainly composed of left and right lower rails 31 that are fixed to the vehicle floor and extend in the fore-and-aft direction of the seat, left and right upper rails 32 that are supported slidably along the lower rails 31, a locking member (not shown) that locks the upper rails 32 to the lower rails 31 so that they cannot slide, and a rail operating lever 33 that releases the locked state of the locking member. The cushion frame 10 is mounted on the upper surfaces of the left and right upper rails 32 via height link devices 40 .

[0028] As shown in Figure 2, the height link device 40 is attached between the rail device 30 and the cushion frame 10, and is mainly composed of left and right first links 41 located on the front side of the seat, left and right second links 42 located on the rear side of the seat, a brake unit (not shown) that regulates the raising and lowering movement of the seat body, and a height operation lever 43 (see Figure 1) for releasing the regulated state of the brake unit. When the height control lever 43 is operated, the second link 42 (the left second link) becomes the driving link, and the right second link 42 and the left and right first links 41 also rotate. This causes the seat body to rise and fall, and the seat height is adjusted.

[0029] As shown in FIGS. 3 and 4, the reclining device 50 is a device that rotatably connects the back frame 20 to the cushion frame 10 and is capable of locking the back frame 20. The reclining device 50 is mainly composed of a reclining unit 51 that regulates the rotation of the back frame 20, a rotating shaft 52 that is journaled at the lower end of the back frame 20 in the seat width direction, protrudes from the outer surface of the back frame 20 and is connected to the reclining unit 51, and a spiral spring 53 that is attached to the outside of the reclining unit 51 in the seat width direction and biases the back frame 20 to rotate around the rotating shaft 52 toward the cushion frame 10.

[0030] The reclining unit 51 can switch the state of the back frame 20 between a locked state in which the back frame 20 is fixed to the cushion frame 10 and an unlocked state in which the back frame 20 is rotatable relative to the cushion frame 10. The reclining unit 51 is normally configured such that the back frame 20 is in a locked state, and when the reclining operation lever 55 shown in FIG. 1 is operated, the rotation shaft 52 rotates and the reclining unit 51 switches to an unlocked state. While the back frame 20 is in the unlocked state, the occupant can tilt the seat back 2 backward, and when the desired tilt angle is reached, the occupant releases the reclining operation lever 55, which returns the seat back to the locked state.

[0031] The pivot shaft 52 is arranged between the left and right cushion side frames 11 with its axial direction aligned with the seat width direction, and the extending end of the pivot shaft 52 protrudes outward in the seat width direction through an axis hole 21a formed in the side surface of the back side frame 21. The protruding end of the rotating shaft 52 is assembled to the reclining unit 51, and is further assembled to a reclining operation lever 55 shown in FIG.

[0032] When the back frame 20 is in an unlocked state and in a backward tilted state, the spiral spring 53 biases the back frame 20 to rotate around the rotation shaft 52 toward the cushion frame 10 side. As shown in Figures 3 and 4, one end 53a of the spiral spring 53 is hooked to the protruding portion of the spring locking bracket 54 on the backside frame 21 side, and the other end 53b is hooked to the spring locking portion 63 of the connecting bracket 60 on the cushion frame 10 side.

[0033] As shown in FIGS. 3 to 6, the connecting bracket 60 is a metal plate that connects the rear portion of the cushion frame 10 and the lower portion of the back frame 20. The central portion of the connecting bracket 60 is fitted into the outer surface of the reclining unit 51 attached to the backside frame 21. In addition, the front and lower portions of the connecting bracket 60 are fastened to the inner surface of the cushion side frame 11 with bolts.

[0034] Specifically, in the central part of the side of the connecting bracket 60, there is formed an axial hole 61 for inserting the rotating shaft 52, and a fitting hole 62 that is provided around the axial hole 61 and for fitting into the reclining unit 51. Furthermore, a spring locking portion 63 is formed at the upper portion of the connecting bracket 60, protruding outward in the seat width direction and for latching the other end portion 53b of the spiral spring 53 thereon. Furthermore, a front restricting portion 64 and a rear restricting portion 65 that can come into contact with the front end portion 54a and the rear end portion 54b of the spring locking bracket 54, respectively, are formed on the upper end portion of the outer periphery of the connecting bracket 60. These restricting portions 64, 65 restrict the rotation range of the back frame 20 when the back frame 20 rotates. Specifically, they function to restrict the rotation range of the spring locking bracket 44 that rotates integrally with the back frame 20.

[0035] A fastening hole 66 is integrally formed in the front portion of the connecting bracket 60 for fastening a fastening member 70 (for example, a fastening bolt or a fastening pin) from the outside in the seat width direction. Further, a second fastening hole 67 for fastening a fastening member 70 is integrally formed in the lower portion of the connecting bracket 60 as well. The fastening holes 66, 67 are formed along the sheet width direction, and are fastening holes that have been tapped (burring tapped) inside the fastening holes 66, 67. The fastening holes 66 and 67 are arranged so as to communicate with the fastening holes 16 and 17 formed in the outer wall portion 11b of the rear portion of the cushion side frame 11, respectively. In the connecting bracket 60, peripheral portions of the fastening holes 66, 67 protrude inward in the seat width direction, and the fastening holes 66, 67 extend in the protruding direction (seat width direction).

[0036] As shown in FIGS. 6 and 7, a first fastening member 71 is fastened to the fastening hole 66 and the fastening hole 16 of the cushion side frame 11 from the outside in the seat width direction. Further, second fastening members 72 are fastened to the fastening holes 67 and the fastening holes 17 of the cushion side frames 11 from the outside in the seat width direction. With the above-described configuration, the connecting bracket 60 can be efficiently assembled to the inner surface of the cushion side frame 11. Specifically, fastening nuts are no longer necessary, the number of parts is reduced, and the work process can be shortened.

[0037] In the above configuration, as shown in FIG. 7, the peripheral portion of the fastening hole 66 protrudes continuously from the main body of the connecting bracket 60 toward the inside in the seat width direction, and is positioned so as not to overlap with the back side frame 21 in the seat width direction. Therefore, the connecting brackets 60 can be arranged compactly in the seat width direction. Also, when the back frame 20 rotates in the seat front-rear direction, interference between the connecting brackets 60 (fastening holes 66) and the back side frames 21 can be suppressed.

[0038] In the above configuration, as shown in FIG. 7, the peripheral portion of the fastening hole 66, the back side frame 21, and the second link 42 are disposed at different positions in the seat width direction. Therefore, when the reclining device 50 and the height link device 40 are operated, the connecting bracket 60 (fastening hole 66), the back side frame 21, and the second link 42 can be prevented from interfering with each other.

[0039] In the above configuration, as shown in FIG. 7, the peripheral edge of the fastening hole 66 protrudes inward in the seat width direction beyond the main body wall portion 11a of the cushion side frame 11. This makes it easier to extend the fastening length between the fastening hole 66 and the fastening member 70. Therefore, the fastening strength of the connecting bracket 60 to the cushion side frame 11 can be increased.

[0040] In the above configuration, as shown in FIG. 7, the fastening member 70 protrudes inward in the seat width direction beyond the peripheral portion of the fastening hole 66 and is positioned so as not to overlap with the back side frame 21 in the seat width direction. Therefore, when the back frame 20 rotates in the seat front-rear direction, interference between the fastening member 70 and the back side frame 21 can be suppressed.

[0041] In the above configuration, as shown in FIG. 6, a notch 68 is formed on the outer periphery of the connecting bracket 60 in the area close to the rear connecting frame 14, the notch 68 being cut out toward the side opposite the rear connecting frame 14. Therefore, interference between the connecting bracket 60 and the rear connecting frame 14 can be suppressed. The cutout portion 68 is cut out in a substantially triangular shape and is disposed between the two fastening holes 66 and 67.

[0042] In the above configuration, as shown in FIG. 6, the first fastening member 71 and the second fastening member 72 are arranged around the reclining unit 51 so as to surround it, and are also arranged around the rear connecting frame 14 so as to surround it. The first fastening member 71 is disposed at a position further forward in the seat than the second fastening member 72. The first fastening member 71 is disposed at a position overlapping with the rear connecting frame 14 in the seat front-rear direction, and at a position overlapping with the reclining unit 51 in the up-down direction. The second fastening member 72 is disposed at a position overlapping with the reclining unit 51 in the seat front-rear direction, and at a position overlapping with the rear connecting frame 14 in the up-down direction. Therefore, the assembly rigidity of the reclining unit 51 and the rear connecting frame 14 can be increased.

[0043] <Other embodiments> In the above embodiment, as shown in FIG. 2, the vehicle seat S is provided with the rail device 30, the height link device 40, and the reclining device 50, but this is not particularly limited and can be modified. That is, the vehicle seat S does not have to be equipped with the rail device 30, the height link device 40, and the reclining device 50.

[0044] In the above embodiment, as shown in FIG. 6, the connecting bracket 60 is attached to the inner surface of the cushion side frame 11, but this is not particularly limited and it may be attached to the outer surface of the cushion side frame 11. In this case, it is preferable that the cushion side frame 11 has a stepped shape that is bent inward in the seat width direction.

[0045] In the above embodiment, as shown in FIG. 6, the connecting bracket 60 is attached to the outer surface of the back side frame 21, but this is not particularly limited, and it may be attached to the inner surface of the back side frame 21.

[0046] In the above embodiment, as shown in Figures 6 and 7, the peripheral portion of the fastening hole 66 protrudes toward the inside in the seat width direction, but this is not particularly limited and the peripheral portion may protrude toward the outside in the seat width direction. In this case, it is preferable that the connecting bracket 60 be attached to the outer surface of the cushion side frame 11.

[0047] In the above embodiment, a vehicle seat used in an automobile was described as a specific example, but the present invention is not limited to this and can also be used as a vehicle seat for trains, buses, etc., as well as airplanes, ships, etc.

[0048] In this embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0049] S Vehicle seat Sa seat frame 1 seat cushion 1a, 2a, cushioning material 1b, 2b, skin material 2 seat backs 10 Cushion Frame 11 Cushion side frame 11a Main body wall 11b Outer wall 11c Connecting wall section 11d Upper flange 11e Lower flange 12 Pan Frame 12a Spring hook stopper 13 Front link frame 14 Rear connecting frame 15 Elastic Spring 16, 17 Fastening holes 20 Back Frame 21 Backside Frame 21a shaft hole 22 Upper frame 23 Lower frame 30 Rail device 31 Lower rail 32 Upper Rail 33 Rail operation lever 40 Height Link Device 41 Link 1 42 Second link (driving link) 43 Height control lever 50 Reclining device 51 Reclining unit 52 Rotating shaft 53 Spiral Spring 53a One end 53b Other end 54 Spring locking bracket 55 Recliner operation lever 60 Connecting bracket 61 Shaft hole 62 Mating hole 63 Spring locking part 64 Front Restriction Section 65 Rear restriction section 66 fastening holes 67 Second fastening hole 68 Notch 70 Fastening members (fastening bolts) 71 First fastening member 72 Second fastening member

Claims

[Claim 1] A vehicle seat including a cushion frame, a back frame, and a connecting bracket connecting a seat rear portion of the cushion frame and a lower portion of the back frame, The cushion frame has cushion side frames arranged on the left and right sides in the seat width direction, The connecting bracket is attached to the cushion side frame by a fastening member, The connecting bracket and the cushion side frame are each formed with a fastening hole for fastening the fastening member, A vehicle seat, characterized in that a peripheral portion of the fastening hole in the connecting bracket protrudes toward one side in the seat width direction, and the fastening hole extends in the protruding direction.

Images