Armrest rotation braking structure

Abstract

To obtain an armrest rotation braking structure that can restrict an increase in the number of components in obtaining moderation feeling.SOLUTION: An armrest rotation braking structure 10 includes a rotation braking member 50. The rotation braking member 50 is provided on a right-side seat back frame part 28 where the armrest 40 is disposed, and when an armrest 40 rotates, a rear end 40A of the armrest 40 abuts on the rotation braking member 50. Accordingly, slide resistance acts on the armrest 40, so that rotation of the armrest 40 is braked. As a result thereof, moderation feeling can be obtained in the armrest 40. Here, a peripheral constitution of a hinge part 42 can be simplified, and the number of components at the hinge part 42 can be reduced, since there is no need to provide a member corresponding to the rotation braking member 50 at the hinge part 42 of the armrest 40.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an armrest rotation braking structure. [Background technology]

[0002] Patent Document 1 discloses a technology in which a guide holding mechanism that holds the armrest in a stored posture (storage position) is provided between an armrest frame that forms the framework of the armrest and a mounting bracket that supports a mounting shaft (hinge part) that is the center of rotation of the armrest. This guide holding mechanism has a guide pin and a guide groove, and the guide pin engages with the guide groove formed in the mounting bracket.

[0003] The guide holding mechanism is also provided with a movement restriction means that restricts the movement (rotation) of the guide pin to hold the armrest in the stored position. The movement restriction means includes a fitting member with a resin restriction portion that elastically deforms when the guide pin abuts, and an outer mounting portion that is attached to the mounting bracket. By fitting the fitting member into the guide groove, the fitting member abuts against the inner circumferential surface of the guide groove, thereby achieving accurate positioning. Furthermore, when the guide pin abuts, the restriction portion elastically deforms, thereby improving vibration isolation and preventing the generation of abnormal noise. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5562686 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the above-mentioned prior art makes it possible to obtain a sense of control when rotating the armrest, the number of parts is increased.

[0006] In consideration of the above, an object of the present invention is to provide an armrest rotation braking structure that can suppress an increase in the number of parts when obtaining a sense of moderation. [Means for solving the problem]

[0007] The armrest rotation braking structure of the first aspect is configured to include an armrest supported in the center of the vehicle's rear seat in the vehicle width direction, rotatably between a stored position arranged along the seat's up-down direction and an extended position arranged along the seat's fore-and-aft direction, centered on a hinge portion arranged along the seat width direction, and a rotation braking member provided on a frame member on which the armrest is arranged, against which the rear end of the armrest abuts when the armrest rotates, braking the rotation of the armrest.

[0008] The armrest rotation braking structure according to the first aspect includes an armrest and a rotation braking member. The armrest is provided in the center of the rear seat of the vehicle in the vehicle width direction and is supported rotatably around a hinge provided along the seat width direction. The armrest is rotatable between a stored position aligned along the seat vertical direction and a deployed position aligned along the seat front-rear direction.

[0009] On the other hand, the rotation braking member is provided on the frame member on which the armrest is disposed. When the armrest rotates, the rear end of the armrest abuts against the rotation braking member, which applies sliding resistance to the armrest and brakes its rotation. As a result, in this aspect, it is possible to provide a sense of moderation in the armrest, and it is possible to give the armrest a luxurious feel.

[0010] In this embodiment, the rotation of the armrest is braked by the rear end of the armrest coming into contact with the rotation braking member provided on the frame member on which the armrest is arranged, which simplifies the configuration around the hinge part of the armrest and makes it possible to reduce the number of parts in the hinge part. Note that "braking" here is used to mean slowing down the rotation of the armrest.

[0011] The armrest rotation braking structure of the second aspect is the armrest rotation braking structure of the first aspect, wherein the skeletal member is a frame having an approximately rectangular shape, and the rotation braking member is a wire that is provided on a lower frame that forms the lower part of the frame and extends along the seat width direction, and that protrudes toward the front side of the seat and has a first convex portion that is contacted by the rear end of the armrest when the armrest rotates, thereby braking the rotation of the armrest.

[0012] In the armrest rotation braking structure according to the second aspect, the framework member is a substantially rectangular frame, and the rotation braking member is a wire. This wire is provided on a lower frame that forms the lower part of the frame and extends along the seat width direction, and the wire is formed with a first protrusion that protrudes toward the front of the seat. When the armrest rotates, the rear end of the armrest abuts against the first protrusion, thereby braking the rotation of the armrest.

[0013] In this way, the rotation of the armrest is braked by forming a first convex portion on the wire, so components such as guide pins and brackets for braking the rotation of the armrest are not required, making it possible to reduce the number of parts.

[0014] The armrest rotation braking structure of the third aspect is the armrest rotation braking structure of the first or second aspect, wherein the wire is a tether wire that can be used to lock a top tether extending from a child seat.

[0015] In the armrest rotation braking structure according to the third aspect, the wire is a tether wire that can be engaged with a top tether extending from a child seat, and by forming a first protrusion on the tether wire, it becomes possible to brake the rotation of the armrest. In other words, by making the tether wire also serve as a member for braking the rotation of the armrest, there is no need to provide a separate member for braking the rotation of the armrest.

[0016] The armrest rotation braking structure of the fourth aspect is the armrest rotation braking structure of any one of the first to third aspects, wherein the first convex portion protrudes toward the front of the seat and applies a braking force by contacting the rear end of the armrest when the armrest rotates from the storage position to the deployed position, and applies a biasing force that biases the armrest in the storage direction by contacting the rear end of the armrest when the armrest rotates from the deployed position to the storage position.

[0017] In the armrest rotation braking structure according to the fourth aspect, the first protrusion protrudes toward the front of the seat. When the armrest rotates from the stowed position to the deployed position, the rear end of the armrest abuts against the first protrusion, thereby applying a braking force to the armrest. This makes it possible to improve the product quality of the armrest compared to when no braking force is applied to the armrest when it is rotated to the deployed position.

[0018] Furthermore, when the armrest rotates from the deployed position to the stowed position, the rear end of the armrest abuts against the first protrusion, applying a biasing force to the armrest in the stowed direction. In other words, when the armrest is rotated to the stowed position, the elastic force of the wire applies a rotational torque to the armrest, thereby assisting in the stowage of the armrest.

[0019] The armrest rotation braking structure of the fifth aspect is an armrest rotation braking structure of any one of the first to fourth aspects, in which a second protrusion is formed on the upper side of the first protrusion, protruding toward the front of the seat and applying a biasing force to bias the armrest in the deployment direction when the armrest rotates from the storage position to the deployment position.

[0020] In the armrest rotation braking structure according to the fifth aspect, a second protrusion is formed above the first protrusion, protruding toward the front of the seat. This second protrusion applies a biasing force to the armrest in the deployment direction when the armrest rotates from the stowed position to the deployed position.

[0021] The armrest rotation braking structure of the sixth aspect is an armrest rotation braking structure of any one of the first to fifth aspects, in which a resin fastener that engages the upholstery of the armrest is provided at the rear end of the armrest, and the resin fastener is capable of abutting against the rotation braking member.

[0022] In the armrest rotation braking structure according to the sixth aspect, a resin fastener that engages the cover of the armrest is provided at the rear end of the armrest, and the resin fastener abuts against the rotation braking member, thereby making it possible to brake the rotation of the armrest when the armrest rotates. Note that "capable of abutting" here means not only when the resin fastener abuts directly against the rotation braking member, but also when the resin fastener abuts indirectly against the rotation braking member via the cover.

[0023] The armrest rotation braking structure of the seventh aspect is an armrest rotation braking structure of any one of the first to sixth aspects, wherein the skeletal member is a frame having an approximately rectangular shape, and the rotation braking member includes a wire rod that forms the lower part of the frame and is approximately inverted U-shaped with an opening on the lower frame side extending along the seat width direction, and a friction member that is suspended between a pair of opposing side portions of the wire rod and against which the rear end of the armrest abuts to brake the rotation of the armrest.

[0024] In the armrest rotation braking structure according to the seventh aspect, the framework member is a substantially rectangular frame, and the rotation braking member includes a wire and a friction member. The wire is substantially inverted U-shaped, opening toward the lower frame that forms the lower portion of the frame and extends along the seat width direction, and the friction member is suspended between a pair of opposing side portions of the wire. Therefore, for example, when the armrest is in the stowed position or the deployed position, the rear end of the armrest comes into contact with the friction member, thereby braking the rotation of the armrest.

[0025] In this way, the rotation of the armrest is braked by the friction member, which makes it possible to simplify the configuration compared to when a guide pin, bracket, etc. is provided to brake the rotation of the armrest. [Effects of the Invention]

[0026] As described above, the armrest rotation braking structure according to the present invention can suppress an increase in the number of parts while providing a sense of moderation. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a schematic perspective view showing a vehicle seat provided with an armrest to which an armrest rotation braking structure according to an embodiment of the present invention is applied, as viewed from the diagonally front left side; [Figure 2] 1 is a schematic side view showing the operation of an armrest to which the armrest rotation braking structure according to the present embodiment is applied. [Figure 3] 1 is a schematic side view showing an armrest to which an armrest rotation braking structure according to an embodiment of the present invention is applied in a state before being deployed. [Figure 4] 1 is a schematic side view showing an armrest in an unfolded state to which an armrest rotation braking structure according to an embodiment of the present invention is applied; [Figure 5] 1 is a schematic side view showing an armrest to which an armrest rotation braking structure according to an embodiment of the present invention is applied in a state before being stored. [Figure 6] 1 is a schematic side view showing a stored state of an armrest to which an armrest rotation braking structure according to an embodiment of the present invention is applied. [Figure 7] 1 is a schematic perspective view showing a vehicle seat provided with an armrest to which an armrest rotation braking structure according to a first modified example is applied, as viewed from the diagonally front left side. [Figure 8] 10 is a schematic side view showing an armrest to which an armrest rotation braking structure according to Modification 1 is applied in a state before being unfolded. FIG. [Figure 9] 10 is a schematic side view showing an armrest to which an armrest rotation braking structure according to Modification 1 is applied in a state before being stored. FIG. [Figure 10] 10 is a schematic perspective view showing a vehicle seat provided with an armrest to which an armrest rotation braking structure according to a second modification is applied, as viewed from the diagonally front left side. FIG. [Figure 11] FIG. 11 is a schematic perspective view showing a modification of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] An armrest to which an armrest rotation braking structure according to an embodiment of the present invention is applied will be described below with reference to the drawings. In the drawings, the arrow FR indicates the forward direction in the seat longitudinal direction, the arrow UP indicates the upward direction in the seat vertical direction, and the arrow RH indicates the rightward direction in the seat width direction. Hereinafter, when the terms "front-rear," "left-right," and "up-down" are used in the description, they refer to the front-rear direction in the seat longitudinal direction, the left-right direction in the seat width direction, and the up-down direction in the seat vertical direction, unless otherwise specified.

[0029] First, a brief description will be given of the configuration of a vehicle seat provided with an armrest to which the armrest rotation braking structure according to this embodiment is applied.

[0030] 1, a vehicle seat 12 provided with an armrest 40 to which the armrest rotating braking structure 10 according to this embodiment is applied is a rear seat 14 located rearward in the vehicle longitudinal direction relative to a front seat (not shown). The rear seat 14 is broadly divided into a seat cushion 16 that supports the buttocks and thighs of a seated occupant, a seat back 18 that can support the upper body of the seated occupant seated on the seat cushion 16, and a headrest 20 that can support the head of the seated occupant.

[0031] The seat back 18 includes a right seat back portion 22 disposed on the right side of the vehicle, a left seat back portion 24 disposed on the left side of the vehicle, and a center seat back portion 26 disposed between the right seat back portion 22 and the left seat back portion 24 and disposed in the center of the vehicle width direction.

[0032] The right seatback portion 22, the center seatback portion 26, and the left seatback portion 24 are rotatable about an axis P and can be folded forward. When rotating about the axis P, the right seatback portion 22 and the center seatback portion 26 rotate integrally while being connected to each other.

[0033] That is, in this embodiment, the rear seat 14 is configured as a 6:4 split folding seat, for example. However, the rear seat 14 is not limited to a 6:4 split ratio, and may be applied to, for example, a 5:5 split folding seat, a 4:2:4 split folding seat, etc.

[0034] In this embodiment, the right seatback portion 22 and the center seatback portion 26 are integrated together and include a right seatback frame portion (frame, framework member) 28 that forms the framework of these portions. The right seatback frame portion 28 is made of metal and is formed in a frame shape when viewed from the front of the vehicle.

[0035] The right seatback frame portion 28 is configured to include a side frame portion 30 that extends in the seat vertical direction and is located on the outer side in the seat width direction, a side frame portion 32 that extends in the seat vertical direction and is located on the inner side in the seat width direction, an upper frame portion 34 that connects upper ends of the side frame portions 30, 32 in the seat width direction, and a lower frame portion 36 that connects lower ends of the side frame portions 30, 32 in the seat width direction. In addition, between the side frame portion 30 and the side frame portion 32, a center frame portion 38 that is located closer to the side frame portion 32 and extends in the seat vertical direction is connected to the upper frame portion 34 and the lower frame portion 36.

[0036] The left seat back portion 24 has substantially the same configuration as the right seat back portion 22 except for the center frame portion 38, and therefore a description thereof will be omitted.

[0037] Incidentally, the center seatback portion 26 is provided with an armrest 40 that supports the elbows and the like of a seated occupant seated in the right seatback portion 22 or the left seatback portion 24. The armrest 40 is supported rotatably about a hinge portion 42 that is provided above the axis P along the seat width direction.

[0038] The armrest 40 is rotatable between a storage position Q aligned in the up-down direction of the seat and an extended position R aligned in the front-rear direction of the seat via a stopper pin 43 (see FIG. 3) provided near the hinge portion 42 and a guide groove (not shown). The stopper pin 43 abuts against the end of the guide groove, so that the armrest 40 is held in the storage position Q or the extended position R.

[0039] <Armrest rotation braking structure configuration> Here, the configuration of the armrest rotation braking structure according to this embodiment will be described.

[0040] 1, in this embodiment, a wire (rotational braking member) 44 is attached to the lower frame portion 36 of the right seatback frame portion 28 between the center frame portion 38 and the side frame portion 32. More specifically, the wire 44 is provided in approximately the center of the armrest 40 in the seat width direction.

[0041] The wire 44 is disposed rearward of the rear end 40A of the unfolded armrest 40, and is generally inverted U-shaped with an opening on the lower frame portion 36 side, and includes a pair of side portions 52 extending in the seat vertical direction, and an upper portion 54 connecting the upper ends of the pair of side portions 52. The lower ends of the pair of side portions 52 are welded (fixed) to the front surface 36A of the lower frame portion 36, respectively.

[0042] As shown in Figure 2, a convex portion (first convex portion) 46 protrudes toward the front of the seat (in a direction approximately perpendicular to the side frame portion 32) at approximately the center of the side portion 52 of the wire 44 in the up-down direction of the seat, and the convex portion 46 is an arc portion 47 that forms an arc shape toward the front of the seat.

[0043] Furthermore, above the protrusion 46, a protrusion (second protrusion) 48 protrudes toward the front of the seat (in a direction substantially perpendicular to the side frame portion 32), and the protrusion 48 is an arc portion 49 that forms an arc toward the front of the seat. The protrusion 48 is formed so as to have a larger radius of curvature than the protrusion 46, and its length in the up-down direction of the seat is shorter than that of the protrusion 46.

[0044] The rear end portion 40A of the armrest 40 is able to come into contact with the protrusions 46 and 48. As shown in Fig. 3, when the armrest 40 rotates, a J hook (plastic fastener) 47 provided on the rear end portion 40A of the armrest 40 is able to come into contact with the protrusion 46. As the cover 47 of the armrest 40 is engaged with the J hook 47, the J hook 47 comes into contact with the protrusion 46 via the cover 47, thereby braking the rotation of the armrest 40. It should be noted that the J hook 45 may come into direct contact with the first protrusion 46 without the cover 47 being interposed therebetween.

[0045] On the other hand, the protrusion 48 applies a biasing force that biases the armrest 40 in the deployment direction when the armrest 40 rotates from the storage position Q to the deployment position P, as shown in FIG.

[0046] <Action and effect of armrest rotation braking structure> Next, the operation and effect of the armrest rotation braking structure according to this embodiment will be described.

[0047] 1, in this embodiment, the armrest rotation braking structure 10 includes an armrest 40 and a rotation braking member 50. The armrest 40 is provided in the center of the vehicle's rear seat 14 in the vehicle width direction, and is supported rotatably around a hinge portion 42 provided along the seat width direction.

[0048] The armrest 40 is rotatable between a stored position Q aligned in the vertical direction of the seat and a deployed position R aligned in the front-rear direction of the seat. The rotation braking member 50 is provided on the right seatback frame portion 28 on which the armrest 40 is arranged.

[0049] In this embodiment, when the armrest 40 rotates, the J hook 43 provided at the rear end 40A of the armrest 40 abuts against the rotation braking member 50 via the cover 47. This applies sliding resistance to the armrest 40, braking the rotation of the armrest 40. As a result, in this embodiment, it is possible to provide a sense of moderation in the armrest 40, and it is possible to give the armrest 40 a luxurious feel.

[0050] Furthermore, in this embodiment, a rotation braking member 50 that brakes the rotation of the armrest 40 is provided on the right seatback frame portion 28 on which the armrest 40 is arranged. Therefore, there is no need to provide a member equivalent to the rotation braking member 50 in the hinge portion 42 of the armrest 40, which simplifies the configuration around the hinge portion 42 and enables the number of parts in the hinge portion 42 to be reduced.

[0051] To explain the rotation braking member 50 in more detail, in this embodiment, the rotation braking member 50 is a wire 44. This wire 44 is provided in the lower frame portion 36 that constitutes the lower part of the right seatback frame portion 28, and the wire 44 is formed with a protrusion 46 that protrudes toward the front of the seat. When the armrest 40 rotates, as shown in FIG. 3, a rear end portion 40A of the armrest 40 abuts against the protrusion 46, thereby braking the rotation of the armrest 40.

[0052] In this way, the rotation of the armrest 40 is braked by forming the protrusion 46 on the wire 44, so there is no need for a bracket or other member for braking the rotation of the armrest 40, making it possible to reduce the number of parts. That is, in this embodiment, the area around the hinge portion 42 in the armrest 40 is simplified, and the number of parts in the hinge portion 42 can be reduced.

[0053] In this embodiment, the wire 44 is provided in approximately the center of the armrest 40 in the seat width direction, so that the phase difference between the left and right sides of the armrest 40 can be suppressed with respect to the braking force obtained by the wire 44.

[0054] Here, the protrusion 46 is an arc portion 47 that forms an arc shape toward the front side of the seat. As shown in Figures 2 to 4, when the armrest 40 rotates from the storage position Q to the deployed position R, the rear end portion 40A of the armrest 40 abuts against the arc portion 47, and a braking force is applied to the armrest 40 due to the sliding resistance with the arc portion 47 that accompanies the rotation of the armrest 40 (the rotation of the armrest 40 is braked).

[0055] This makes it possible to improve the product quality of the armrest 40 and gives the armrest 40 a luxurious feel, compared to when no braking force is applied to the armrest 40 when the armrest 40 is rotated from the storage position Q to the deployment position R.

[0056] 2, 5, and 6, when the armrest 40 rotates from the deployed position R to the stowed position Q, the rear end 40A of the armrest 40 abuts against the upper part of the arcuate portion 47, thereby applying a biasing force to the armrest 40 in the stowed direction. In other words, when the armrest 40 is rotated to the stowed position Q, a rotational torque is applied to the armrest 40 by the elastic force of the wire 44. This makes it possible to assist the stowage of the armrest 40 in this embodiment.

[0057] Furthermore, in this embodiment, a protrusion 48 that protrudes toward the front of the seat is formed on the upper side of the protrusion 46, and this protrusion 48 applies a biasing force that urges the armrest 40 in the deployment direction when the armrest 40 rotates from the storage position Q to the deployment position P.

[0058] In addition, the second protrusion 48 provides a clicking sensation when the armrest 40 is placed in the deployed position P. This allows the occupant to determine that the armrest 40 is placed in the deployed position P.

[0059] Furthermore, in this embodiment, a protrusion 46 is provided on the wire 44, and a protrusion 48 is provided above the protrusion 46, but it is not necessary that both the protrusion 46 and the protrusion 48 are provided, and only one of them may be provided.

[0060] <Modification of this embodiment> In each of the modifications, the same components as those in the above embodiment are designated by the same reference numerals and will not be described again.

[0061] In the above embodiment, as shown in FIG. 1, a wire 44 serving as a rotational braking member is attached to the lower frame portion 36 of the right-side seatback frame portion 28, and the rear end portion 40A of the armrest 40 abuts against the wire 44, thereby maintaining the deployed position R of the armrest 40; however, the rotational braking member is not limited to this.

[0062] (Variation 1) For example, as a first modification, as shown in Fig. 7, a tether wire (wire) 62 that can be engaged with a top tether extending from a child seat (not shown) may be used as the rotation braking member 60, and the rotation of the armrest 40 may be braked by this tether wire 62. In this case, a protrusion 46 is formed on the tether wire 62 in the same manner as the wire 44 (see Fig. 1).

[0063] As shown in FIG. 8, when the armrest 40 rotates, the rear end portion 40A of the armrest 40 comes into contact with the protrusion 46 formed on the tether wire 62, thereby braking the rotation of the armrest 40.

[0064] Furthermore, as shown in Figure 9, the protrusion 46 applies a biasing force that biases the armrest 40 in the storage direction by abutting the rear end 40A of the armrest 40 when the armrest 40 rotates from the deployed position R to the stored position Q.

[0065] In this way, in variant 1, by using the tether wire 62 as a rotation braking member for the armrest 40, there is no need to provide a separate member for braking the rotation of the armrest 40, which makes it possible to further reduce costs.

[0066] (Variation 2) 10 , the rotation braking member 70 may be configured to include a wire (wire rod) 72 and a friction member 74. The wire 72 is generally inverted U-shaped with an opening on the side of the lower frame portion 36 of the right-side seatback frame portion 28, and includes a pair of side portions 76 extending in the seat vertical direction, and an upper portion 78 connecting the upper ends of the pair of side portions 76. Meanwhile, the friction member 74 is strip-shaped and is suspended across the lower portions of the pair of side portions 76 of the wire 72.

[0067] The friction member 74 is made of resin and has a textured surface, which provides friction. When the armrest 40 is in the storage position Q or the deployed position R, the rear end 40A of the armrest 40 comes into contact with the friction member 74, thereby braking the rotation of the armrest 40.

[0068] In this way, the rotation of the armrest 40 is braked by the friction member 74, which allows for a simpler configuration than when a guide pin, bracket, or the like is provided to brake the rotation of the armrest 40. Furthermore, the belt-shaped friction member 74 can have a larger contact (abutment) area with the rear end 40A of the armrest 40 than the wire 44 (see FIG. 1), which increases the frictional force with the armrest 40 and therefore the braking force.

[0069] 11 may be joined to the wire 72 instead of the belt-shaped friction member 74. The friction member 80 may also be added separately above the friction member 74, in which case it is possible to change the feel of the armrest 40.

[0070] In addition to these, although not shown, a convex shape may be formed on a back panel attached to the right seatback frame portion 28, a member such as EPP (expanded polypropylene), etc., and brought into contact with the rear end portion 40A of the armrest 40 to generate sliding resistance.

[0071] Although the present invention has been described above by way of examples, these examples are merely examples and can be modified in various ways without departing from the spirit of the invention. It goes without saying that the scope of the present invention is not limited to these examples. [Explanation of symbols]

[0072] 10 Armrest rotation braking structure 12 Vehicle seats 14 Rear seat 28 Right seat back frame (frame, framework) 36 Lower frame part (lower frame) 40 Armrest 40A rear end 42 Hinge part 44 Wire (rotating braking member) 46 Convex part (first convex part) 47 Arc section 48 Convex part (second convex part) 49 Arc section 50 Rotational braking member 60 Rotational braking member 62 Tether wire (wire, rotating braking member) 70 Rotational braking member 72 Wire 74 Friction materials 76 Side part (wire) 80 Friction member Q Storage position R Expand position

Claims

1. an armrest supported at a center portion of the rear seat of the vehicle in a vehicle width direction so as to be rotatable between a storage position arranged in a seat up-down direction and an extended position arranged in a seat front-rear direction, the armrest being centered on a hinge portion provided along the seat width direction; a rotation braking member that is provided on a frame member on which the armrest is arranged, and that a rear end of the armrest comes into contact with to brake the rotation of the armrest when the armrest rotates; The armrest rotation braking structure includes:

2. the framework member is a frame having a substantially rectangular shape, 2. The armrest rotation braking structure according to claim 1, wherein the rotation braking member is provided on a lower frame that forms the lower part of the frame and extends along the seat width direction, and is a wire that protrudes toward the front side of the seat and has a first convex portion that is contacted by the rear end of the armrest when the armrest rotates, thereby braking the rotation of the armrest.

3. 3. The armrest rotation braking structure according to claim 2, wherein the wire is a tether wire to which a top tether extending from a child seat can be locked.

4. 3. The armrest rotation braking structure according to claim 2, wherein the first protrusion protrudes toward the front side of the seat, applies a braking force to the armrest when the armrest rotates, and applies a biasing force to bias the armrest in a storage direction when the armrest rotates from the deployed position to the storage position.

5. 3. The armrest rotation braking structure according to claim 2, wherein a second protrusion is formed above the first protrusion, protruding toward the front of the seat and applying a biasing force to bias the armrest in the deployment direction when the armrest rotates from the storage position to the deployed position.

6. 2. The armrest rotation braking structure according to claim 1, wherein a resin fastener for fastening a cover of the armrest is provided at a rear end of the armrest, and the resin fastener is capable of contacting the rotation braking member.

7. the framework member is a frame having a substantially rectangular shape, The rotation braking member is a wire rod that forms a lower portion of the frame, extends along the seat width direction, and has a generally inverted U shape with an opening on the lower frame side; a friction member that is bridged across a pair of opposing side portions of the wire rod and that can brake the rotation of the armrest by contacting a rear end of the armrest; 2. The armrest rotation braking structure according to claim 1, comprising:

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