Arm rest of vehicle seat

Abstract

To provide an arm rest attached to a side surface of a seat back so as to be rotatable in a vertical direction, in which a luggage can be hung stably on a bezel fitted around an axis.SOLUTION: An arm rest has: a body part 11 which is rotatable with respect to a seat back; a bezel member 30 which is attached to a cylindrical part 22 of the body part 11; and a cap member 40 which is fitted to the bezel member 30. The bezel member 30 has a flange part 31, a luggage lock part 32, and a connection part 33. A pair of first cylindrical piece parts 37, which are provided with a pair of first engagement parts 34 engaging with a pair of first engaged parts 27 provided on the cylindrical part 22, are formed on the connection part 33. The cap member 40 has: a pair of second cylindrical piece parts 44 which are provided with a pair of second engagement parts 43 engaging with a pair of second engaged parts 36 of the bezel member 30; and a pair of third cylindrical piece parts 45 which extend while contacting an inner diameter part side of the first cylindrical piece part 37, and suppress deformation of the first cylindrical piece part 37 to a radial direction inner side.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an armrest for a vehicle seat, and more particularly to an armrest for a vehicle seat that is attached to a side of a seat back so as to be rotatable in the up and down direction. [Background technology]

[0002] Conventionally, in vehicle seats equipped in vehicles such as automobiles, armrests are known that are attached so as to be rotatable in the vertical direction around a shaft member disposed on the side of the seat back and extending in the width direction of the seat. In the armrest described in Patent Document 1, a hook member that can be used to hang luggage is attached to the tip of the shaft member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5952372 Summary of the Invention [Problem to be solved by the invention]

[0004] In the armrest described in the aforementioned Patent Document 1, the hook member includes a first cover portion that holds the end portion of the cover skin against the main body and that includes a luggage locking portion; a second cover portion that is fitted into the first cover portion and has a barb that prevents luggage from falling; and a cap member that is attached to the second cover portion and covers the tip of the shaft member. The first cover portion is attached to the armrest by fastening it together with the main body to the seatback frame with the shaft member. However, there are cases where it is desirable to shorten the length of the shaft member and fasten only the main body to the seatback frame with the shaft member, while attaching the first cover portion to the main body using a snap-fit ​​engagement. In such cases, there is a demand for increased snap-fit ​​engagement strength to prevent the first cover portion, which includes the luggage locking portion, from coming off when luggage is hung on it.

[0005] In view of such demands, the object of the present invention is to provide an armrest that is attached to the side of a seat back so that it can be rotated up and down, and that allows luggage to be stably hung on a bezel attached around an axis. [Means for solving the problem]

[0006] A first aspect of the present invention is an armrest for a vehicle seat, comprising: a main body portion forming a skeleton attached to a side of a seat back so as to be rotatable in the vertical direction around an axis extending in the seat width direction, the main body portion being arranged on the side of the seat back; a cover covering the main body portion; a substantially cylindrical bezel member fitted and attached to an inner diameter portion of a cylindrical portion of the main body portion having the axis as its central axis; and a cap member fitted into the inner diameter portion of the bezel member to cover the inside of the cylindrical portion so as not to be visible, wherein the bezel member has a flange portion that extends radially when fitted into the cylindrical portion of the main body portion and holds the cover between itself and an outer end of the cylindrical portion in the seat width direction; a luggage locking portion outward in the seat width direction from the flange portion; and a connecting portion provided inward in the seat width direction from the flange portion, and the connecting portion has a locking portion that is attached to the cylindrical portion. and a pair of first cylindrical pieces extending in the axial direction are formed, each having a pair of first engaging portions that snap-fit ​​into a pair of first engaged portions that are provided opposite each other in a direction perpendicular to the axis, thereby preventing them from coming off toward the axial tip end, and the cap member, when fitted into the inner diameter portion of the bezel member, has a pair of second cylindrical pieces extending in the axial direction that are provided with a pair of second engaging portions that snap-fit ​​into a pair of second engaged portions that are provided opposite each other in a direction perpendicular to the axis, on the bezel member, thereby preventing them from coming off toward the axial tip end, and a pair of third cylindrical pieces extending in the axial direction that extend and abut against the inner diameter side of the first cylindrical pieces, thereby preventing the first cylindrical pieces from deforming radially inward.

[0007] According to the first aspect of the present invention, when the bezel member is fitted into the cylindrical portion of the main body portion and the cap member is fitted into the inner diameter portion of the bezel member, the third cylindrical piece of the cap member abuts against the inner diameter side of the first cylindrical piece of the bezel member with the first engaging portion of the main body portion engaged with the first engaging portion, thereby preventing the first cylindrical piece from deforming radially inward. This makes it possible to provide an armrest in which the bezel member having a luggage locking portion can be kept engaged with the first engaging portion of the main body portion via the snap-fit ​​type first engaging portion, allowing luggage to be stably hung on the luggage locking portion.

[0008] The second invention of the present invention is characterized in that, in the above-mentioned first invention, the cap member has an approximately plate-shaped expanded diameter portion that extends radially outward from the luggage locking portion of the bezel member when fitted into the inner diameter portion of the bezel member.

[0009] According to the second aspect of the present invention, when a baggage is hung on the baggage fastening portion of the bezel member, the enlarged diameter portion can prevent the baggage from coming off the baggage fastening portion and falling.

[0010] The third invention of the present invention is characterized in that, in the first or second invention, a plate-shaped rib extending radially inward is formed on the inner diameter portion of the third cylindrical piece of the cap member.

[0011] According to the third invention, a plate-shaped rib extending radially inward is formed on the inner diameter portion of the third cylindrical piece, thereby increasing the rigidity of the third cylindrical piece and better preventing the first cylindrical piece of the bezel member from deforming radially inward. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of an automobile seat to which an armrest according to an embodiment of the present invention is applied; [Figure 2] 1 is a side view of the armrest of the embodiment, omitting a bezel member, a cap member, and a bolt. [Figure 3]FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2. [Figure 5] FIG. 3 is a cross-sectional view taken along the line VV of FIG. 2. [Figure 6] FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 2. [Figure 7] FIG. 5 is a view corresponding to FIG. 4 and showing another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] An armrest 10 according to one embodiment of the present invention will be described with reference to Figures 1 to 6. In the following description, directions will be described based on the up, down, front, back, left and right directions shown in each figure. Here, the up, down, front, back, left and right directions are defined based on the automobile seat 1 when the automobile seat 1 to which the armrest 10 is attached is attached to the automobile floor F. Here, the automobile seat 1 corresponds to the "vehicle seat" in the claims.

[0014] As shown in FIG. 1, an automobile seat 1 includes a seat cushion 2 that supports the buttocks and thighs of a seated occupant, a seat back 3 that supports the waist and back of the seated occupant, and a headrest 9 that supports the head of the seated occupant.

[0015] As shown in Figs. 1 to 6, the seat back 3 has a back frame 4 forming a skeleton, a back pad 5 as a cushioning material placed on the back frame 4, and a back cover 6 as a skin material that covers the back pad 5. The back pad 5 is an elastic body made of urethane foam resin, and its outer shape determines the outer shape of the seat back 3. As clearly shown in Fig. 3, a bracket 7 for attaching an armrest 10 is attached to the left side of the back frame 4. A stud nut 8 for fastening a bolt 50 (described later) is attached to the bracket 7 with a rotation axis A as its central axis. The seat cushion 2 and headrest 9 are of a commonly used and well-known configuration, and therefore description thereof will be omitted.

[0016] As shown in FIG. 1, an armrest 10 is attached to the left side of the seat back 3 so as to be rotatable up and down around a rotation axis A extending in the left-right direction. Specifically, it can rotate between a use position P1 indicated by a solid line in FIG. 1 and a storage position P2 indicated by a two-dot chain line. When the armrest 10 is in the use position P1, a seated occupant can rest their arms on the top surface of the armrest 10, and when the armrest 10 is in the storage position P2, the seated occupant can smoothly get in and out of the automobile seat 1. Here, the rotation axis A corresponds to the "axis" in the claims.

[0017] As shown in Figures 2 to 6, the armrest 10 has a main body 11 as a skeleton, an armrest pad 12 as a cushioning material placed over the main body 11, and an armrest cover 13 as a skin material that covers the armrest pad 12. The main body 11 is made of resin or light alloy and is a strong and rigid member. The armrest pad 12 is an elastic body made of urethane foam resin, and its outer shape determines the outer shape of the armrest 10. The armrest cover 13 is formed into a bag-like shape by sewing together multiple pieces cut from fabric, synthetic leather, or the like. Here, the armrest cover 13 corresponds to the "cover" in the claims.

[0018] The main body 11 includes a substantially planar plate-like portion 20 that is shaped like an isosceles triangle with its apex facing forward when viewed from the side, a standing wall portion 21 disposed on the outer periphery of the plate-like portion 20 and extending leftward, and a cylindrical portion 22 disposed on the rear end of the plate-like portion 20 and extending leftward. The standing wall portion 21 has a thick portion 23 whose tip portion is expanded in thickness toward the outside of the plate-like portion 20. The plate-like portion 20 has a plurality of reinforcing ribs 24 extending leftward to increase rigidity. The cylindrical portion 22 is disposed with its central axis aligned with the rotation axis A, and a through-hole 25 is formed in the plate-like portion 20 and penetrates the thickness direction with its central axis aligned with the rotation axis A. The through-hole 25 is a hole for passing a bolt 50 to attach the main body 11 to the back frame 4 so that the main body 11 can rotate about the rotation axis A. As clearly shown in FIGS. 2 and 4 , the upper front and lower rear portions of the cylindrical portion 22 are formed with first engaged portions 27 that extend radially inward within a central angle range of approximately 50° around a line that passes through the rotation axis A and is inclined at 45° with respect to the horizontal. The first engaged portions 27 are portions that engage with first engaging portions 34 of the bezel member 30, which will be described later, when the bezel member 30 is fitted into the cylindrical portion 22. Also, as clearly shown in FIGS. 2 and 6 , the lower front and upper rear portions of the cylindrical portion 22 are formed with chamfered corners on the inner head side of the upper end within a central angle range of approximately 60° around a line that passes through the rotation axis A and is inclined at 30° with respect to the horizontal. The chamfered portions 28 are portions that engage with second engaged portions 36 of the bezel member 30, which will be described later, when the bezel member 30 is fitted into the cylindrical portion 22. 2 and 5, a groove 29 that opens radially inward and extends in the left-right direction is formed in a substantially lower portion of the cylindrical portion 22. When a bezel member 30 (described later) is fitted into the cylindrical portion 22, a ridge 38 of the bezel member 30 engages with the groove 29 to prevent the bezel member 30 from rotating around the rotation axis A relative to the cylindrical portion 22.

[0019] As shown in FIGS. 3 to 6 , the bezel member 30 is a substantially cylindrical resin member having a flange portion 31 formed in its approximately left-right center and extending radially outward. When the bezel member 30 is fitted into the cylindrical portion 22 of the main body 11, the flange portion 31 serves to clamp the terminal portion of the armrest cover 13 between itself and the left end of the cylindrical portion 22. The portion to the left of the flange portion 31 is formed as a luggage locking portion 32 whose outer diameter gradually decreases toward the tip. The portion to the right of the flange portion 31, the connecting portion 33, has an outer diameter slightly smaller than the inner diameter of the cylindrical portion 22 of the main body 11 so that it can be fitted into the cylindrical portion 22. When the connecting portion 33 is fitted into the cylindrical portion 22, a first engaging portion 34 is formed in the connecting portion 33 at a portion corresponding to the first engaged portion 27 of the cylindrical portion 22, which engages in a snap-fit ​​manner. The portion of the cylindrical portion 22 in the central angular region where the first engagement portion 34 is formed is a first cylindrical piece 37. Furthermore, a second engaged portion 36 is formed at the end of the connecting portion 33 on the flange portion 31 side by a hole 35 that penetrates radially, at a portion corresponding to the chamfered portion 28 of the cylindrical portion 22. The second engaged portion 36 is a portion that engages with a second engagement portion 43 of a cap member 40, which will be described later, when the cap member 40 is fitted into the bezel member 30. Furthermore, when the connecting portion 33 is fitted into the cylindrical portion 22, a protruding ridge portion 38 that extends in the direction of the rotation axis A is formed at a portion of the connecting portion 33 that corresponds to the groove portion 29 of the cylindrical portion 22 to engage with the groove portion 29 and stop the rotation of the bezel member 30 relative to the cylindrical portion 22.

[0020] 3 to 6, the cap member 40 is a resin member having a generally cylindrical fitting portion 41 with its central axis serving as a rotation axis A, and a generally disk-shaped enlarged diameter portion 42 connected to the left end of the fitting portion 41 and with its central axis serving as the rotation axis A. The fitting portion 41 has an outer diameter set to be slightly smaller than the inner diameter of the bezel member 30, allowing it to be fitted into the bezel member 30. When the fitting portion 41 is fitted into the bezel member 30, a second engaging portion 43 that engages in a snap-fit ​​manner is formed in the fitting portion 41 at a portion that corresponds to the second engaged portion 36 of the bezel member 30. The portion of the fitting portion 41 in the central angular region where the second engaging portion 43 is formed is a second cylindrical piece 44. Furthermore, when the fitting portion 41 is fitted into the bezel member 30, the portion of the fitting portion 41 that abuts the first cylindrical piece 37 of the bezel member 30 from the inner diameter side is the third cylindrical piece 45. When the fitting portion 41 is fitted into the bezel member 30, the right end portion, which is the tip of the third cylindrical piece 45, is located at approximately the same position as the right end portion, which is the tip of the first cylindrical piece 37 of the bezel member 30. The third cylindrical piece 45 is located slightly to the left of the first engaging portion 34. This prevents the first cylindrical piece 37 from deforming radially inward, thereby preventing the first engaging portion 34 of the bezel member 30 from disengaging from the first engaged portion 27 of the main body 11. When the fitting portion 41 of the cap member 40 is fitted into the bezel member 30, the outer diameter of the expanded diameter portion 42 is set to be larger than the outer diameter of the luggage locking portion 32 of the bezel member 30. This makes it difficult for luggage hung on the luggage latching portion 32 to come off to the left (outside in the seat width direction).

[0021] 3 to 6, a method for assembling the armrest 10 to the seat back 3 will be described. With the back pad 5 and back cover 6 attached, a bolt 50 is passed through the through hole 25 of the main body 11 and tightened into a stud nut 8 attached to the bracket 7. Specifically, the bolt 50 has, from its tip, a small-diameter male threaded portion 51, a large-diameter cylindrical portion 52, and an even larger-diameter washer portion 53. The outer diameter of the cylindrical portion 52 is set slightly smaller than the inner diameter of the through hole 25 of the main body 11. When the cylindrical portion 52 is passed through the through hole 25 and the male threaded portion 51 is tightened into the stud nut 8, the washer portion 53 abuts against the left side surface of the main body 11 to such an extent that it does not interfere with rotation of the main body 11 about the rotation axis A. With the main body 11 attached to the bracket 7 with the bolt 50, a bezel member 30 is attached to the cylindrical portion 22 of the main body 11. Specifically, with the ridge portion 38 of the connecting portion 33 engaged with the groove portion 29 of the cylindrical portion 22, the connecting portion 33 of the bezel member 30 is inserted into the cylindrical portion 22, and the first engaging portion 34 of the connecting portion 33 is engaged with the first engaged portion 27 of the cylindrical portion 22. At this time, the first cylindrical piece 37 on which the first engaging portion 34 is formed deforms inwardly as the connecting portion 33 is inserted, and then returns to its original shape, whereby the first engaging portion 34 engages with the first engaged portion 27 in a snap-fit ​​manner. Next, the fitting portion 41 of the cap member 40 is fitted into the bezel member 30, and the second engaging portion 43 of the cap member 40 is engaged with the second engaged portion 36 of the bezel member 30. At this time, the second cylindrical piece 44 on which the second engaging portion 43 is formed deforms inward as the fitting portion 41 is inserted into the inner diameter portion of the bezel member 30 and then returns to its original shape, thereby snap-fitting the second engaging portion 43 into the second engaged portion 36. Then, with the fitting portion 41 fitted into the bezel member 30, the third cylindrical piece 45 of the fitting portion 41 abuts against the first cylindrical piece 37 of the bezel member 30 from the inner diameter side. This prevents the first cylindrical piece 37 from deforming radially inward, and prevents the first engaging portion 34 of the bezel member 30 from coming off the first engaged portion 27 of the main body 11.

[0022] The present embodiment configured as described above provides the following advantageous effects. When the bezel member 30 is fitted into the cylindrical portion 22 of the main body 11 and the cap member 40 is fitted into the inner diameter portion of the bezel member 30, the third cylindrical piece 45 of the cap member 40 abuts against the inner tubular portion of the first cylindrical piece 37 of the bezel member 30 while the first engaging portion 34 of the bezel member 30 is engaged with the first engaged portion 27 of the main body 11, preventing the first cylindrical piece 37 from deforming radially inward. This provides an armrest 10 in which the bezel member 30, having the luggage locking portion 32, can be kept snap-fit ​​with the first engaging portion 34 engaged with the first engaged portion 27 of the main body 11, allowing luggage to be stably hung on the tip end of the bolt 50.

[0023] Furthermore, the cap member 40 has an expanded diameter portion 42 that extends radially outward from the luggage locking portion 32 of the bezel member 30 when the fitting portion 41 is fitted into the inner diameter portion of the bezel member 30. This makes it possible to prevent the luggage from coming off the luggage locking portion 32 and falling when luggage is hung on the luggage locking portion 32 of the bezel member 30 by the expanded diameter portion 42.

[0024] Another embodiment of the present invention is shown in Figure 7. The difference from the above-described embodiment is that a plate-shaped rib 46 extending radially inward is formed on the inner diameter portion of the third cylindrical piece 45 of the fitting portion 41 of the cap member 40. Components common to the above-described embodiment are given the same reference numerals and will not be described again. By forming the rib 46 on the inner diameter portion of the third cylindrical piece 45, the rigidity of the third cylindrical piece 45 is increased, making it possible to further suppress radially inward deformation of the first cylindrical piece 37 of the bezel member 30.

[0025] Although specific embodiments have been described above, the present invention is not limited to those external appearances and configurations, and various modifications, additions, and deletions are possible within the scope of the present invention. For example, the following can be mentioned.

[0026] 1. In the above embodiment, the positioning of the cap member 40 relative to the bezel member 30 in the rotational direction around the rotation axis A was performed by engaging the second engaging portion 43 of the cap member 40 with the second engaged portion 36 of the bezel member 30. However, this is not limiting, and the positioning may also be performed by engaging a groove portion provided on one side with a ridge portion provided on the other side, as in the case of positioning the bezel member 30 relative to the cylindrical portion 22 of the main body 11.

[0027] 2. In the above embodiment, the third cylindrical piece 45 of the fitting portion 41 of the cap member 40 is configured to abut against the entire inner diameter portion of the first cylindrical piece 37 of the bezel member 30. However, this is not limiting, and the third cylindrical piece 45 may be configured to abut against a portion of the inner diameter portion of the first cylindrical piece 37 of the bezel member 30. For example, it may be formed as a plate-like rib extending radially inward.

[0028] 3. In the above embodiment, the present invention is applied to the armrest 10 of the automobile seat 1, but it may also be applied to the armrest of a seat in an airplane, ship, railroad car, or the like. [Explanation of symbols]

[0029] 1. Automobile seats (vehicle seats) 3 Seat back 4 Back Frame 7 Bracket 8 stud nuts 10 Armrest 11 Main body 12 Armrest Pads 13 Armrest cover (cover) 20 Plate-shaped part 22 Cylindrical section 25 through holes 27 First engaged part 29 Groove 30 Bezel material 31 Flange 32 Luggage latch 33 Connecting part 34 First engagement portion 36 Second engaged part 37 First cylindrical piece 38 Convex portion 40 Cap member 41 Fitting 42 Expanded diameter part 43 Second engagement portion 44 Second cylindrical piece 45 Third cylindrical piece 46 Ribs 50 volts A rotation axis (axis) P1 Usage position P2 storage position

Claims

1. An armrest for a vehicle seat, comprising: The seatback includes a main body portion that forms a skeleton and is attached so as to be rotatable in the vertical direction around an axis that is disposed on a side surface of the seat back and extends in the seat width direction; a cover that covers the main body portion; a substantially cylindrical bezel member that is fitted into the inner diameter portion of a cylindrical portion of the main body portion that has the axis as its central axis; and a cap member that is fitted into the inner diameter portion of the bezel member and covers the inside of the cylindrical portion so that it cannot be seen. the bezel member has a flange portion that extends radially and holds the cover between itself and an outer end of the cylindrical portion in the seat width direction when fitted into the cylindrical portion of the main body, a luggage locking portion located outer than the flange portion in the seat width direction, and a connecting portion located inner than the flange portion in the seat width direction, The connecting portion is formed with a pair of first cylindrical pieces extending in the axial direction, each of which is provided with a pair of first engaging portions that snap-fit ​​into a pair of first engaged portions that are provided opposite each other in a direction perpendicular to the axis in the cylindrical portion, so as not to come off toward the axial tip end side, The cap member has a pair of second cylindrical pieces extending in the axial direction and provided with a pair of second engaging portions that, when fitted into the inner diameter portion of the bezel member, snap-fit ​​into a pair of second engaged portions provided opposite each other in a direction perpendicular to the axis on the bezel member to prevent the cap member from coming off toward the axial tip side, and a pair of third cylindrical pieces extending in the axial direction that abut against the inner diameter side of the first cylindrical pieces and prevent the first cylindrical pieces from deforming radially inward.

2. In claim 1, An armrest for a vehicle seat, wherein the cap member has an approximately plate-shaped expanded diameter portion that extends radially outward from the luggage engaging portion of the bezel member when fitted into the inner diameter portion of the bezel member.

3. In claim 1 or claim 2 An armrest for a vehicle seat, wherein a plate-like rib extending radially inward is formed on an inner diameter portion of the third cylindrical piece of the cap member.

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