Vehicle seats

Abstract

To provide vehicle seats that are lightweight and have reduced manufacturing costs. [Solution] A seat for a vehicle comprising a seat cushion and a seat back, wherein the seat back includes a seat back frame including a plate-shaped region and a support portion that supports a member that is movable relative to the seat back frame, and the support portion is formed continuously with the region.

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] Patent Document 1 describes a frame structure of a seat back. This frame structure has a flat panel frame having a substantially rectangular shape. This panel frame has closed cross-section portions that close the panel frame in a direction orthogonal to the height direction over the entire height direction on each of the left and right sides.

[0003] Patent Document 2 describes a child seat anchor including a main body portion formed of sheet metal, a pipe-shaped portion formed by bending a part of the sheet metal into a pipe shape, with both open ends being continuously integrated with the main body portion, and a tether hook provided on an ISOFIX-compatible child seat being connected to the pipe-shaped portion.

[0004] Patent Documents 3 to 6 describe structures in which a headrest attachment mechanism, a locking mechanism with a striker, a seat belt guide mechanism, or a connection mechanism with a child seat, etc. are fixed to a seat back frame formed in a panel shape.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

[0006] The technology disclosed herein aims to provide vehicle seats that are lightweight and have reduced manufacturing costs. [Means for solving the problem]

[0007] A vehicle seat according to one aspect of the technology of the present disclosure comprises a seat cushion and a seat back, the seat back having a seat back frame including a plate-shaped region and a support portion for supporting a member that is movable relative to the seat back frame, the support portion being formed continuously with the region. [Effects of the Invention]

[0008] The technology disclosed herein enables weight reduction and a reduction in manufacturing costs. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is an external perspective view showing a schematic configuration of a vehicle seat 10, which is one embodiment of the technology of this disclosure. [Figure 2] Figure 2 is a schematic perspective view showing an example of the configuration of the back frame of the seat back 30 shown in Figure 1. [Figure 3] Figure 3 is a schematic diagram showing a cross-section (a cross-section perpendicular to the left-right direction) passing through the headrest support portion 51. [Figure 4] Figure 4 is a schematic diagram showing a cross-section (a cross-section perpendicular to the left-right direction) passing through the seat belt support portion 52. [Figure 5] Figure 5 is a magnified view showing the armrest support portion 53 and the tether hook support portion 54. [Figure 6] Figure 6 is a schematic exploded perspective view showing the area around the left side frame of the left back frame 40L. [Figure 7] Figure 7 is an exploded perspective view showing a modified example of the left back frame 40L. [Modes for carrying out the invention]

[0010] Figure 1 is an external perspective view showing a schematic configuration of a vehicle seat 10, which is one embodiment of the technology of this disclosure. In this specification, vehicles include automobiles, aircraft, trains, mobile drones, or ships. In the following description, the direction in front of an occupant sitting in the vehicle seat 10 in a normal posture is described as the forward direction Fr, the direction opposite to the forward direction Fr is described as the rear direction Rr, and these together are referred to as the front-rear direction. Furthermore, when the occupant is viewed from the rear, the direction to the right of the occupant is described as the right direction R, and the direction to the left of the occupant is described as the left direction L, and these together are referred to as the left-right direction. Furthermore, the direction perpendicular to the front-rear direction and the left-right direction, and moving from the headrest toward the seat surface, is described as the downward direction D, and the direction opposite to the downward direction D is described as the upward direction U, and these together are referred to as the up-down direction. The front-rear direction, the left-right direction, and the up-down direction are directions that intersect each other. The left-right direction constitutes the width direction of the vehicle seat 10.

[0011] The vehicle seat 10 shown in Figure 1 is exemplified by, for example, the rear seat (second row) of a passenger car. The vehicle seat 10 is mounted on the body 100 of an automobile or the like and mainly consists of a seat cushion 20 on which an occupant can sit and a seat back 30 that supports the back of the seated occupant.

[0012] The seat cushion 20 is a bench seat that is a single unit in the width direction (left-right direction) of the vehicle, and has a cushion frame and cushioning material provided on the cushion frame, and its surface is covered with a cushion surface 21 such as fiber or leather. The seat cushion 20 is attached to the floor F of the body 100. The seat cushion 20 may be divided into left and right halves.

[0013] The seat back 30 has a back frame and a cushioning material provided on the back frame, and its surface is covered with a back skin 31 such as fiber or leather. The seat back 30 is, for example, a split type that can be split into left and right parts, and has a right seat back 30R and a left seat back 30L. Here, the ratio of the left - right direction lengths of the right seat back 30R and the left seat back 30L is described for the case of 4:6, but it is not limited to this, and for example, it may be 6:4 or 5:5. The seat back 30 may not be a split type. Although not an essential configuration, the left seat back 30L is provided with a retractable armrest 33.

[0014] In the back frame of the seat back 30, hinge parts are provided at both left and right ends of the lower end, and these hinge parts are rotatably supported by bearing parts provided on the body 100. In some cases, a reclining device that can tilt and fix the seat back 30 at a desired angle with respect to the seat cushion 20 is provided on this bearing part.

[0015] FIG. 2 is a perspective view schematically showing a configuration example of the back frame of the seat back 30 shown in FIG. 1. The right seat back 30R has a right back frame 40R, and the left seat back 30L has a left back frame 40L. The right back frame 40R and the left back frame 40L each include a rectangular plate - shaped panel part 41 having a thickness in the front - rear direction. On the front surface of the panel part 41, bead parts 410 formed by convex parts protruding forward are partially formed in a desired pattern, thereby ensuring bending rigidity.

[0016] The bead part 410 can have a cross - section such as a partial arc shape or a trapezoid, and is formed to protrude forward. As a result, the bead part 410 does not protrude on the rear surface of the panel part 41, so a flat luggage compartment surface can be ensured in a state where the seat back 30 is laid down and stacked on the seat cushion 20.

[0017] The right back frame 40R and the left back frame 40L each extend forward in the forward direction Fr from the right end edge of the panel portion 41, and include a plate-shaped right side surface portion 42R having a thickness in the left-right direction, a plate-shaped left side surface portion 42L extending forward in the forward direction Fr from the left end edge of the panel portion 41 and having a thickness in the left-right direction, a plate-shaped right front surface portion 43R extending leftward in the left direction L from the front end edge of the right side surface portion 42R and having a thickness in the front-rear direction, and a plate-shaped left front surface portion 43L extending rightward in the right direction R from the front end edge of the left side surface portion 42L and having a thickness in the front-rear direction.

[0018] In each of the right back frame 40R and the left back frame 40L, a right side frame is formed by the right end portion of the panel portion 41, the right side surface portion 42R and the right front surface portion 43R extending from this right end portion. Further, a left side frame is formed by the left end portion of the panel portion 41, the left side surface portion 42L and the left front surface portion 43L extending from this left end portion.

[0019] Each side frame of the right back frame 40R and the left back frame 40L has a U-shaped cross section perpendicular to the vertical direction. That is, a gap is provided between the left end edge of the right front surface portion 43R and the panel portion 41 in the front-rear direction, and a gap is provided between the right end edge of the left front surface portion 43L and the panel portion 41. Thus, each of the right back frame 40R and the left back frame 40L has an open cross-sectional shape. Thereby, while ensuring the strength of the side frame, a space is formed between the panel portion 41 and each of the right front surface portion 43R and the left front surface portion 43L, and this space can be effectively utilized. For example, by incorporating the lock mechanism 55 described later in this space, the distance between the occupant and the frame can be increased, the feeling of foreign objects when the occupant is seated can be made less likely to be felt, and the sitting comfort performance can be improved.

[0020] The right back frame 40R and the left back frame 40L each comprise a plate-shaped upper surface portion 44 extending forward Fr from the upper edge of the panel portion 41 and having thickness in the vertical direction, a plate-shaped upper front portion 45 extending downward D from the front edge of the upper surface portion 44 and having thickness in the front-rear direction, and a plate-shaped upper lower surface portion 46 extending rearward Rr from the lower edge of the upper front portion 45 toward the panel portion 41 and having thickness in the vertical direction. The tip of the upper lower surface portion 46 is joined to the panel portion 41 by welding or the like.

[0021] In the right back frame 40R and the left back frame 40L, the upper frame is composed of the upper end of the panel portion 41, the upper surface portion 44, the upper front portion 45, and the upper lower surface portion 46.

[0022] The right back frame 40R and the left back frame 40L each include a plate-shaped lower surface portion 47 that extends forward Fr from the lower edge of the panel portion 41 and has thickness in the vertical direction, and a plate-shaped lower front surface portion 48 that extends upward U from the front edge of the lower surface portion 47 and has thickness in the front-rear direction.

[0023] In the right back frame 40R and the left back frame 40L, the lower frame is formed by the lower end of the panel portion 41, the lower surface portion 47, and the lower front portion 48.

[0024] The right back frame 40R and the left back frame 40L are each formed by sheet metal processing from a single sheet of iron or the like. In other words, the panel section 41 and the right side section 42R, the left side section 42L, the top section 44, and the bottom section 47 are formed seamlessly and continuously. Furthermore, the top section 44 and the upper front section 45 are formed seamlessly and continuously, and the upper front section 45 and the upper bottom section 46 are formed seamlessly and continuously. Also, the right side section 42R and the right front section 43R are formed seamlessly and continuously, the left side section 42L and the left front section 43L are formed seamlessly and continuously, and the bottom section 47 and the lower front section 48 are formed seamlessly and continuously. Thus, the right back frame 40R and the left back frame 40L are each constructed with the panel section 41 and the right side frame, left side frame, upper frame, and lower frame formed integrally.

[0025] The upper front section 45 and the lower front section 48 are positioned in front of the right front section 43R and the left front section 43L at their respective left-right ends, overlapping them, and are joined to the right front section 43R and the left front section 43L by welding or the like at this overlapping portion. The lower front section 48 is further joined to the panel section 41 by welding or the like between its left-right ends. These joints increase the joint rigidity of the upper and lower frames and the left and right side frames, thereby increasing the frame rigidity of the upper, lower, left, and right frames.

[0026] Each of the right seatback 30R and left seatback 30L has a support portion that is provided continuously on the panel portion 41, which supports a member that is separate from the right back frame 40R and left back frame 40L and is movable relative to the right back frame 40R and left back frame 40L. Examples of such members include a headrest 32 that can be attached to the seatback 30, an armrest 33 that can be rotated on the seatback 30, a seat belt that can be moved relative to the seatback 30, and a tether hook for a child seat that can be attached to the seatback 30.

[0027] A headrest 32 is detachably attached to the upper part of both the right back frame 40R and the left back frame 40L (see Figure 1), and a headrest support section 51 for supporting the headrest 32 is provided at the top of each. Two headrest support sections 51 are provided side by side on the upper part of the left back frame 40L.

[0028] Figure 3 is a schematic diagram showing a cross-section (a cross-section perpendicular to the left-right direction) passing through the headrest support portion 51. The headrest support portion 51 includes a hole 51A provided through the upper surface portion 44 in the thickness direction, and a hole 51B provided through the upper lower surface portion 46 in the thickness direction. Two sets of holes 51A and 51B are provided side by side. Guide components are fixed to these two sets through which both ends of the stays of the headrest 32 are inserted. These two sets support the stays of the headrest 32 via these guide components. Holes 51A and 51B are each burred, which allows the guide components to be easily fixed.

[0029] The headrest support portion 51 is composed of the upper surface portion 44, the upper front portion 45, the upper lower surface portion 46, and the combination of the above two portions. By integrally forming the headrest support portion 51 with the panel portion 41 in this way, the headrest 32 can be supported by the right back frame 40R and the left back frame 40L only via guide parts. As a result, compared to the case in which the headrest support portion 51 is composed of separate components such as brackets, it is possible to reduce the number of parts and simplify the assembly process, making it possible to miniaturize, lighten, and reduce the cost of the seat back 30. Furthermore, as shown in Figure 3, by making the cross-sectional shape of the headrest support portion 51 a closed cross-section, the strength and rigidity of the headrest support portion 51 can be ensured.

[0030] As shown in Figure 2, a seat belt support section 52 (not shown) for supporting a seat belt is provided at the upper center of the left back frame 40L.

[0031] Figure 4 is a schematic diagram showing a cross-section (a cross-section perpendicular to the left-right direction) passing through the seat belt support portion 52. The seat belt support portion 52 is provided with a hole 52A that penetrates the upper surface portion 44 in the thickness direction. The seat belt support portion 52 is formed by the hole 52A and the upper surface portion 44 surrounding it.

[0032] A seat belt retractor is fixed to the front surface of the panel 41 below the hole 52A. The end of the seat belt extending from this retractor is inserted through the hole 52A from bottom to top and fixed to the front and bottom of the seat back 30. The seat belt tension is properly maintained by supporting a portion of the seat belt with the inner circumferential surface 52As of the hole 52A.

[0033] The inner circumferential surface 52As of the hole 52A has a curved shape that bulges toward the center of the hole 51A. This protects the seat belt when it moves in its longitudinal direction and comes into sliding contact with the inner circumferential surface 52As. It also allows the seat belt to extend and retract smoothly.

[0034] In this way, by integrally forming the seat belt support portion 52 with the panel portion 41, it is possible to reduce the number of parts and simplify the assembly process compared to when the seat belt support portion 52 is made of a separate component from the left back frame 40L, making it possible to miniaturize, lighten, and reduce the cost of the seat back 30.

[0035] As shown in Figure 2, the panel portion 41 is provided with an armrest support portion 53 that supports the armrest 33 and a tether hook support portion 54 that supports the tether hook of the child seat.

[0036] The armrest support portion 53 is provided at the lower right end of the panel portion 41 of the left back frame 40L. Preferably, the armrest support portion 53 is provided in an area of ​​the panel portion 41 other than the bead portion 410.

[0037] The tether hook support portion 54 is located in the center of the panel portion 41 in the vertical and horizontal directions on the right back frame 40R. On the left back frame 40L, two tether hook support portions 54 are located side by side in the vertical center of the panel portion 41. As shown in Figure 2, it is preferable that the tether hook support portion 54 be located on the bead portion 410.

[0038] Figure 5 is an enlarged view showing the armrest support portion 53 and the tether hook support portion 54. The panel portion 41 of the left back frame 40L has a substantially rectangular hole 411 that penetrates through the thickness direction of the panel portion 41 in an area other than the bead portion 410. Of the four sides that constitute the periphery of the hole 411, two sides that face each other in the left-right direction are provided with an extension portion 53R extending forward in the Fr direction from one of the two sides, and an extension portion 53L extending forward in the Fr direction from the other of the two sides.

[0039] The extension portion 53R and the extension portion 53L are each plate-shaped with thickness in the left-right direction and are provided with connecting holes through which the armrest 33 is rotatably connected. The armrest 33 is rotatably supported by the extension portion 53R and the extension portion 53L. The armrest support portion 53 is formed by the extension portion 53R and the extension portion 53L.

[0040] The extensions 53R and 53L are formed by cutting and bending the panel 41. In other words, the panel 41 and the extensions 53R and 53L are formed seamlessly and continuously. By forming the panel 41 and the extensions 53R and 53L integrally in this way, it is possible to reduce the number of parts and simplify the assembly process compared to when the armrest support 53 is made of a separate component from the left back frame 40L, making the seat back 30 smaller, lighter, and less expensive.

[0041] When forming the armrest support portion 53 by cutting and bending, the hole portion 411 must be sufficiently large. By providing the hole portion 411 in an area other than the bead portion 410, the bending rigidity of the panel portion 41 can be ensured while the armrest support portion 53 can be formed integrally with the panel portion 41.

[0042] As shown in Figure 5, the panel portion 41 has a pair of holes 412 arranged vertically, penetrating through the thickness direction. The boundary portion 54A of this pair of holes 412 is formed in a curled shape (a cylindrical shape extending in the left-right direction) by press working or the like. The tether hook of the child seat can be engaged with the boundary portion 54A, and the tether hook is supported by the boundary portion 54A. The boundary portion 54A constitutes the tether hook support portion 54.

[0043] The boundary portion 54A is formed seamlessly and continuously with the panel portion 41. By integrally forming the panel portion 41 and the boundary portion 54A in this way, compared to the case where the tether hook support portion 54 is made of a separate component from the right back frame 40R and the left back frame 40L, it is possible to reduce the number of parts and simplify the assembly process, making the seat back 30 smaller, lighter, and less expensive. In addition, by providing the boundary portion 54A on the bead portion 410, sufficient bending rigidity of the panel portion 41 can be ensured.

[0044] As shown in Figure 2, the right back frame 40R and the left back frame 40L are each provided with a locking mechanism 55 that can engage with a striker 110 fixed to the body 100. The locking mechanism 55 is configured to switch between a state in which it is engaged with the striker 110 and a state in which it is disengaged from the striker 110. By disengaging the striker 110 from the locking mechanism 55, the seat back 30 can be tilted relative to the seat cushion 20.

[0045] The locking mechanism 55 is provided at the outer (right) end of the seat at the upper end of the right back frame 40R, and at the outer (left) end of the seat at the upper end of the left back frame 40L. Since the striker 110 is fixed to the body 100, when the seat back 30 tilts, the striker 110 moves relative to the seat back 30.

[0046] Figure 6 is a schematic exploded perspective view showing the area near the left side frame of the left back frame 40L. The left side portion 42L and the panel portion 41 are provided with an opening 40K that extends across their boundary. The opening 40K receives a portion of the striker 110.

[0047] The locking mechanism 55 comprises a hook 55A that can engage with a striker 110 received in the opening 40K, a spring 55B that biases the hook 55A in the locking direction, and a fixing pin 55C that fixes the hook 55A and the spring 55B to the inner surface of the left side portion 42L. The left side portion 42L is provided with a hole 42A that penetrates through it in its thickness direction, and the locking mechanism 55 is supported on the inner surface of the left side portion 42L by fixing the fixing pin 55C to the hole 42A. Similarly, in the right back frame 40R, the locking mechanism 55 is supported on the inner surface of the right side portion 42R.

[0048] Thus, the locking mechanism 55 is located inside the left side frame of the left back frame 40L. Compared to a configuration where the locking mechanism 55 is located outside the left side frame, this configuration allows for a greater distance between the occupant and the frame, reducing the feeling of foreign objects when the occupant is seated and improving seating comfort. The same effect can be obtained for the right back frame 40R. Furthermore, by incorporating the locking mechanism 55 into the left side frame, the load can be efficiently transmitted to the body 100 when subjected to external forces. In addition, since a bracket for fixing the locking mechanism 55 to the left side frame is not required, miniaturization, weight reduction, and reduced manufacturing costs are possible. Moreover, since the locking mechanism 55 is located between the panel section 41 and the left front section 43L or the right front section 43R, these sections can protect against impacts in the front-rear direction. The side frames of the right back frame 40R and the left back frame 40L each have an open cross-section shape, allowing the locking mechanism 55 to be easily fixed to them.

[0049] Figure 7 is an exploded perspective view showing a modified example of the left back frame 40L. The seat back 30 comprises a right back frame 40R and a left back frame 40L, with the left back frame 40L being longer in the lateral direction than the right back frame 40R. Therefore, the load input during a collision is greater on the left back frame 40L.

[0050] In the modified example shown in Figure 7, the only difference from the configuration shown in Figure 2 is that the left side frame and the rest of the left back frame 40L are made of separate components. In the example in Figure 7, the panel section 41 is formed by joining panel section 41A and panel section 41B by welding. The upper surface section 44 is formed by joining upper surface section 44A and upper surface section 44B by welding. The upper front section 45 is formed by joining upper front section 45A and upper front section 45B by welding. The lower surface section 47 is formed by joining lower surface section 47A and lower surface section 47B by welding. The lower front section 48 is formed by joining lower front section 48A and lower front section 48B by welding. The left side frame and the rest of the left back frame 40L are each formed by sheet metal processing from a single metal plate. Finally, these are joined by welding to form the left back frame 40L.

[0051] As described above, for the left back frame 40L, which is subjected to a relatively large load input, the strength can be increased by making the left side frame, which houses the locking mechanism 55, a separate component. For example, the material of the left side frame and the rest of the frame can be changed, thereby increasing the strength. On the other hand, for the right back frame 40R, the right side frame and the rest of the frame can be formed as a single unit, resulting in benefits such as a reduction in the number of parts and simplification of the assembly process.

[0052] Furthermore, even if the seat back 30 is not divided into left and right halves, if the length of the seat back frame in the left-right direction becomes long, it is effective to construct the side frame and the rest of the frame from separate components, as shown in Figure 7.

[0053] In the above description, the locking mechanism 55 is assumed to be built into the side frame, but the mechanism built into the side frame is not limited to the locking mechanism 55. For example, when a reclining mechanism is provided on the seat back 30, this reclining mechanism may be fixed to the right side portion 42R and the left side portion 42L. Alternatively, the extension portion 53R of the armrest support portion 53 may be made as a separate component, and this separate component may be fixed to the inner surface of the right side portion 42R of the left back frame 40L.

[0054] In the above description, the headrest support portion 51, seat belt support portion 52, armrest support portion 53, and tether hook support portion 54 are assumed to be integrally formed with the panel portion 41, but this is not limited to this. One or more of these may be made of a separate component from the panel portion 41.

[0055] For example, the armrest support portion 53 may be made as a separate component and fixed to the panel portion 41. Alternatively, the tether hook support portion 54 may be made as a separate component and fixed to the panel portion 41. Alternatively, the armrest support portion 53 and the tether hook support portion 54 may each be made as separate components and fixed to the panel portion 41.

[0056] As described above, the following matters are disclosed in this specification. The following parentheses describe the components etc. corresponding to the above embodiments, but are not limited thereto.

[0057] (1) Equipped with a seat cushion (seat cushion 20) and a seat back (seat back 30), The above-mentioned seat back includes a seat back frame (right back frame 40R and left back frame 40L) including a first region (panel portion 41) configured in a plate shape, and support portions (headrest support portion 51, seat belt support portion 52, armrest support portion 53, tether hook support portion 54) that support members (headrest 32, armrest 33, seat belt, child seat tether hook) that are movable relative to the above-mentioned seat back frame, The support portion described above is formed continuously with the first region described above, and is a seat for a vehicle.

[0058] (2) (1) A vehicle seat as described above, The above-mentioned support portion includes a headrest support portion (headrest support portion 51) that supports the headrest (headrest 32) as the above-mentioned component, and is a seat for a vehicle.

[0059] (3) (2) A vehicle seat as described above, The above-described seat back frame includes a first surface portion (upper surface portion 44) extending from the edge of the first region in a direction intersecting the first region (forward direction Fr), and a first hole portion (hole portion 51A) provided through the first surface portion in the thickness direction. The headrest support portion described above is a vehicle seat that supports the headrest in the first hole described above.

[0060] (4) (3) A vehicle seat as described above, The above-described seat back frame includes a second surface portion (upper front portion 45) extending inward (downward D) from the edge of the first surface portion, a third surface portion (upper lower surface portion 46) extending toward the first region from the edge of the second surface portion, and a second hole portion (hole portion 51B) provided through the third surface portion in the thickness direction. The headrest support portion described above is a vehicle seat that supports the headrest in the first hole and the second hole described above.

[0061] (5) A vehicle seat described in any one of (1) to (4), The above-mentioned support portion includes an armrest support portion (armrest support portion 53) that supports the armrest (armrest 33) as the above-mentioned member, and is a seat for a vehicle.

[0062] (6) (5) A vehicle seat as described above, The first region described above has a third hole (hole 411) that penetrates in the thickness direction, The above-mentioned armrest support portion includes an extension portion (extension portion 53R and extension portion 53L) extending from the edge of the third hole portion in a direction intersecting the first region (forward direction Fr), and the armrest is supported by the extension portion, in a vehicle seat.

[0063] (7) (6) A vehicle seat as described above, The above first region has a bead portion (bead portion 410), The above-mentioned third hole portion is provided in a region other than the bead portion, and is a seat for a vehicle.

[0064] (8) A vehicle seat described in any one of (1) to (7), The above-mentioned support portion includes a seat belt support portion (seat belt support portion 52) that supports the seat belt as the above-mentioned member, and is a seat for a vehicle.

[0065] (9) (8) A vehicle seat as described above, The above-described seat back frame includes a first surface portion (upper surface portion 44) extending from the edge of the first region in a direction intersecting the first region (forward direction Fr), and a fourth hole portion (hole portion 52A) provided through the first surface portion in the thickness direction. The above-mentioned seat belt support portion is a vehicle seat that supports the seat belt in the fourth hole portion.

[0066] (10) (9) A vehicle seat as described above, The inner circumferential surface (inner circumferential surface 52As) of the fourth hole has a curved shape that bulges towards the center of the fourth hole, in a seat for a vehicle.

[0067] (11) A vehicle seat described in any one of (1) to (10), The above-mentioned support portion includes a tether hook support portion (tether hook support portion 54) that supports the tether hook of the child seat as the above-mentioned component, and is a vehicle seat.

[0068] (12) (11) A vehicle seat as described above, The above-mentioned first region has a pair of fifth holes (holes 412) that penetrate in the thickness direction, The above-mentioned tether hook support portion includes the boundary portion (boundary portion 54A) of the pair of fifth holes, and supports the tether hook at the boundary portion, for use as a vehicle seat.

[0069] (13) (12) A vehicle seat as described above, The above first region has a bead portion (bead portion 410), The boundary portion is a vehicle seat provided on the bead portion. [Explanation of symbols]

[0070] 10 Vehicle seats 20 Seat Cushions 21 Cushion surface 30 Seatback 30L Left seat back 30R Right Seat Back 31 Back surface 32 headrests 33 Armrest 40K aperture 40L Left Rear Frame 40R Right Back Frame Panel sections 41, 41A, 41B 42A,51A,51B,52A,411,412 Hole 42L Left side part 42R Right side part 43L Left front section 43R Right front section 44,44A,44B Top part 45,45A,45B Upper front part 46 Upper bottom part 47,47A,47B Bottom part 48,48A,48B Lower front part 51 Headrest support 52 Seat belt support section 52As inner surface 53 Armrest support 53L,53R extension part 54 Tether hook support section 54A Boundary 55 Locking mechanism 55A Hook 55B Spring 55C Fixing Pin 100 Body 110 Striker 410 Bead section

Claims

1. Equipped with a seat cushion and seat back, The seat back has a seat back frame including a plate-shaped region, and a support portion that supports a member that is movable relative to another seat back frame, The support portion is a vehicle seat formed continuously with the region.

2. A vehicle seat according to claim 1, The support portion includes a headrest support portion that supports the headrest as the member, and is a seat for a vehicle.

3. A vehicle seat according to claim 2, The seat back frame includes a first surface portion extending from the edge of the region in a direction intersecting the region, and a first hole portion provided through the first surface portion in the thickness direction. The headrest support portion is a vehicle seat that supports the headrest in the first hole.

4. A vehicle seat according to claim 3, The seat back frame includes a second surface portion extending inward from the edge of the first surface portion, a third surface portion extending toward the region from the edge of the second surface portion, and a second hole portion provided through the third surface portion in the thickness direction. The headrest support portion is a vehicle seat that supports the headrest in the first hole and the second hole.

5. A vehicle seat according to any one of claims 1 to 4, The support portion includes an armrest support portion that supports the armrest as the member, and is a seat for a vehicle.

6. A vehicle seat according to claim 5, The region has a third hole that penetrates in the thickness direction, The armrest support portion includes an extension portion extending from the edge of the third hole portion in a direction intersecting the region, and the armrest is supported by the extension portion, in a vehicle seat.

7. A vehicle seat according to claim 6, The region has a bead portion, The third hole is provided in a region other than the bead portion, in a vehicle seat.

8. A vehicle seat according to claim 1, The support portion includes a seat belt support portion that supports the seat belt as the member, for use as a vehicle seat.

9. A vehicle seat according to claim 8, The seat back frame includes a first surface portion extending from the edge of the region in a direction intersecting the region, and a fourth hole portion provided through the first surface portion in the thickness direction. The seat belt support portion is a vehicle seat that supports a seat belt in the fourth hole.

10. A vehicle seat according to claim 9, A seat for a vehicle, wherein the inner circumferential surface of the fourth hole has a curved shape that bulges towards the center of the fourth hole.

11. A vehicle seat according to claim 1, The support portion includes a tether hook support portion that supports the tether hook of the child seat as the member, for use as a vehicle seat.

12. A vehicle seat according to claim 11, The region has a pair of fifth holes that penetrate in the thickness direction, The tether hook support portion includes the boundary portion of the pair of fifth holes, and supports the tether hook at the boundary portion, for use as a vehicle seat.

13. A vehicle seat according to claim 12, The region has a bead portion, The boundary portion is a vehicle seat provided on the bead portion.

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