Headrest bushings and vehicle seats

Abstract

To obtain a headrest bush which enables a shopping bag to be hung thereon and enables improvement of visual quality.SOLUTION: A headrest bush 30R is attached to an upper end of a frame of a seat back and a stay of a headrest is inserted into an insertion hole 32. The headrest bush 30R has a head 34 which is disposed exposed at the upper side of the seat back. A hook 52 is attached to the head 34. The hook 52 may be displaced between a protruding position where the hook 52 protrudes from the head 34 to the seat rear side and enables a shopping bag to be hung thereon and a storage position where the hook 52 is stored in the head 34.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and particularly to a headrest bush into which a stay of a headrest is inserted.

Background Art

[0002] In the automotive seat with a headrest disclosed in the following Patent Document 1, a luggage holding hook capable of hanging a shopping bag is integrally formed on a rear surface side of an upper end portion of a synthetic resin headrest support (headrest bush) that supports the headrest.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In the above-described prior art, even when the hook is not in use with no shopping bag hung on the luggage holding hook, the hook protrudes from the head portion of the headrest bush, so there is room for improvement from the viewpoint of improving appearance.

[0005] In consideration of the above facts, an object of the present invention is to obtain a headrest bush and a vehicle seat that allow a shopping bag to be hung and can improve appearance.

Means for Solving the Problem

[0006] The headrest bush of the first embodiment includes a bush body attached to the upper end of the seat back frame, having an insertion hole into which a headrest stay is inserted, and a head that is exposed and positioned above the seat back, and a hook attached to the head that is displaceable between a protruding position that extends from the head toward the rear of the seat and from which a shopping bag can be hung, and a retracted position that is stored inside the head.

[0007] According to the first embodiment, a bushing body is attached to the upper end of the seat back frame, and a headrest stay is inserted into an insertion hole in the bushing body. The bushing body has a head that is exposed and positioned above the seat back, and a hook is attached to the head. The hook is positioned to protrude from the head toward the rear of the seat, allowing a shopping bag to be hung from it. Since the hook can be stored inside the head, the appearance can be improved.

[0008] In the second embodiment of the headrest bush, the hook is rotatably mounted to the head around the insertion hole, and both ends are supported by the head in the protruding position.

[0009] According to the second embodiment, the hook, which is rotatably attached to the head of the bush body around the insertion hole, is supported at both ends by the head when it is in a protruding position that extends from the head toward the rear of the seat, and the shopping bag is suspended from the hook in this state. This prevents the shopping bag from accidentally falling off the hook.

[0010] In the third embodiment, the headrest bush has, in the first embodiment, a pair of sliding parts that are slidably supported relative to the head in the front-rear direction of the seat, and a hanging part that connects the rear ends of the pair of sliding parts in the left-right direction of the seat and from which the shopping bag is suspended.

[0011] According to the third embodiment, the hook is supported by a pair of sliding parts that are slidable in the seat-front-rear direction relative to the head of the bush body. The hook slides relative to the head between a protruding position and a retracted position, and a shopping bag is suspended from a hanging part that connects the rear ends of the pair of sliding parts in the seat-left-right direction. Because the hook slides relative to the head in this way, it is possible to easily displace the hook between the protruding position and the retracted position.

[0012] A vehicle seat of the fourth embodiment comprises a seat back that supports the back of the occupant, a headrest that supports the head of the occupant, and a headrest bush of any one of the first to third embodiments, in which the bush body is attached to the upper end of the frame of the seat back and the stay of the headrest is inserted into the insertion hole.

[0013] In the fourth embodiment of the vehicle seat, the occupant's back is supported by the seat back and the occupant's head is supported by the headrest. The bushing body of the headrest bushing is attached to the upper end of the seat back frame, and the stay of the headrest is inserted into the insertion hole of the bushing body. Since this headrest bushing is of any one of the first to third embodiments, the aforementioned effects are obtained. [Effects of the Invention]

[0014] As described above, the headrest bush and vehicle seat according to the present invention allow shopping bags to be hung and improve the appearance. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing a part of a vehicle seat according to the first embodiment. [Figure 2] This is a perspective view showing a part of the headrest bush according to the first embodiment, with the hook in the retracted position. [Figure 3]It is a perspective view showing a part of the headrest bush according to the first embodiment, illustrating a state where the hook is positioned at the protruding position. [Figure 4] It is an exploded perspective view showing a part of the headrest bush according to the first embodiment. [Figure 5] It is a plan view showing a part of the headrest bush according to the first embodiment, illustrating a state where the hook is positioned at the storage position. [Figure 6] It is a plan view showing a part of the headrest bush according to the first embodiment, illustrating a state where the hook is positioned at the protruding position. [Figure 7] It is an enlarged plan view showing a part of the configuration illustrated in Fig. 5. [Figure 8] It is an enlarged plan view showing a part of the configuration illustrated in Fig. 6. [Figure 9] It is an enlarged plan view showing a part of the configuration illustrated in Fig. 6. [Figure 10] It is a plan view showing a part of the headrest bush according to the second embodiment. [Figure 11] It is a side view showing a part of the headrest bush according to the second embodiment. MODE FOR CARRYING OUT THE INVENTION

[0016] Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described with reference to Figs. 1 to 9. Note that in each drawing, some reference numerals may be omitted for the sake of improving the legibility of the drawings. In addition, arrows FR, LH, RH and UP appropriately described in each drawing respectively indicate the front, left, right and upward directions of the vehicle seat 10. Hereinafter, when the description is simply made using the directions of front-rear, left-right and up-down, it is intended to indicate the directions relative to the vehicle seat 10.

[0017] As shown in FIG. 1, a vehicle seat 10 according to the present embodiment includes a seat back 12 that supports an occupant's back, a headrest 26 that supports the occupant's head, and a pair of left and right headrest bushes 30L and 30R attached to the upper portion of a frame 14 of the seat back 12. The seat back is erected from a rear end portion of a seat cushion (not shown) on which an occupant sits, and the headrest 26 is connected to the frame 14 of the seat back 12 via the pair of left and right headrest bushes 30L and 30R. Note that the pair of left and right headrest bushes 30L and 30R may be regarded as constituent elements of the seat back 12.

[0018] The seat back 12 includes a seat back pad (not shown) covered on the frame 14, and a seat back skin 20 covering a surface of the seat back pad. The seat back pad is formed of a foamed body such as urethane foam for example, and the seat back skin 20 is formed into a bag shape by sewing a plurality of skin pieces made of cloth material, leather, synthetic leather or the like.

[0019] The frame 14 includes a pair of left and right side frames 16 extending in the vertical direction, and an upper frame 18 connecting upper end portions of the pair of side frames 16 in the left-right direction. The pair of side frames 16 are manufactured by press-forming sheet metal for example, and have a substantially U-shaped cross-section with an open central side in the left-right direction when viewed from the vertical direction. The upper frame 18 is manufactured by press-forming sheet metal for example, and has a substantially hat-shaped cross-section with an open rear side when viewed from the left-right direction.

[0020] The upper frame 18 constitutes an upper end portion of the frame 14, and has upper and lower wall portions opposed to each other with a gap in the vertical direction. A pair of left and right bush insertion holes, through which the pair of left and right headrest bushes 30L and 30R are inserted, are formed in the upper and lower wall portions respectively. The pair of left and right headrest bushes 30L and 30R each have claw portions that are caught on an edge portion of each bush insertion hole, and are fixed to the upper frame 18.

[0021] The headrest 26 has a stay 28 that forms its frame, a headrest pad (not shown) which is a cushioning material supported by the stay 28, and a headrest cover 29 that covers the surface of the headrest pad. The stay 28 is made of, for example, a bent metal pipe and has a roughly inverted U shape when viewed from the front or rear. The stay 28 is made of a pair of left and right legs 28A that extend in the vertical direction and a connecting part 28B that connects the upper ends of the pair of legs 28A in the left-right direction. The headrest pad is made of a foam material such as urethane foam. The upper part of the stay 28 is embedded in the headrest pad. The headrest cover 29 is made of a bag-like structure formed by sewing together a plurality of cover pieces made of cloth, leather or synthetic leather.

[0022] A pair of legs 28A of the stay 28 are connected to the frame 14 of the seat back 12 via a pair of headrest bushes 30L and 30R. Each headrest bush 30L and 30R is manufactured, for example, by resin injection molding and is formed in a cylindrical shape overall. Each headrest bush 30L and 30R has an insertion hole 32 formed from the upper end to the lower end into which the legs 28A of the stay 28 are inserted. The upper end of each headrest bush 30L and 30R is provided with a substantially circular plate-shaped head 34, and below the head 34 is a substantially cylindrical tubular portion 36. The head 34 is positioned exposed above the seat back 12, and the tubular portion 36 is positioned inside the seat back 12. The head 34 and the tubular portion 36 constitute the bush body 31.

[0023] A pair of legs 28A of the stay 28 are inserted from above into the insertion holes 32 of the pair of headrest bushes 30L and 30R. The head 34 of one of the headrest bushes 30L is provided with a locking mechanism (not shown) that restricts the relative vertical movement of the leg 28A with respect to the other headrest bush 30L. The head 34 of the other headrest bush 30L is provided with a button 34A that releases the locking mechanism, and by pressing the button 34A, the stay 28, i.e., the headrest 26, becomes able to move vertically relative to the headrest bushes 30L and 30R.

[0024] As shown in Figures 2 to 6, the head 34 of the other headrest bush 30R is fitted with a hook 52 for hanging shopping bags such as polyethylene or polypropylene bags. The hook 52 is manufactured, for example, by resin injection molding and has an arc shape. As shown in Figure 4, the head 34 of the headrest bush 30R is divided into an upper and lower part: a head body 38 molded integrally with the cylindrical part 36, and a lid part 40 attached to the upper side of the head body 38. Hereinafter, when simply referred to as "head 34," it refers to the head 34 of the headrest bush 30R.

[0025] As shown in Figures 4 to 6, a groove 42 for storing (housing) the hook 52 is formed on the upper surface of the head body 38. The groove 42 is arc-shaped and opens upward. In a vertical view, an insertion hole 32 is located inside the groove 42. The groove 42 is eccentrically positioned with respect to the insertion hole 32, and both ends of the groove 42 open rearward at the rear end of the head body 38. Hereinafter, both ends of the groove 42 will be referred to as openings 42A and 42B.

[0026] The cover portion 40 is superimposed on the upper surface of the head body 38 and is fixed to the head body 38 by means of claw fitting or the like. The groove portion 42 of the head body 38 is closed from above by this cover portion 40. The upper end opening of the insertion hole 32 is formed by a through hole 33 formed in the cover portion 40. At the rear end of the cover portion 40, notches 44A and 44B are formed above the openings 42A and 42B of the groove portion 42, respectively.

[0027] The aforementioned hook 52 is inserted into the groove 42 and is slidably supported along the groove 42 relative to the head body 38, i.e., the head 34. The hook 52 is displaceable (slidable) relative to the head 34 between the retracted position shown in Figures 2 and 5 and the protruding position shown in Figures 3 and 6. When the hook 52 is in the retracted position, it is stored inside the head 34. When the hook 52 is in the protruding position, it protrudes from the head 34 to the rear, allowing a shopping bag to be hung.

[0028] As shown in Figures 2 to 8, a handle portion 54 projecting upward is integrally formed on one end 52A of the hook 52. The handle portion 54 is approximately cylindrical in shape. When the hook 52 is in the retracted position, the handle portion 54 is positioned in contact with or close to the notch 44A of the lid portion 40. When the hook 52 is in the protruding position, the handle portion 54 is positioned in contact with or close to the notch 44B of the lid portion 40. A vehicle occupant can grasp the handle portion 54 when sliding (rotating) the hook 52 between the retracted position and the protruding position.

[0029] As shown in Figures 7 and 9, an inner bulge 56 is integrally formed at one end 52A of the hook 52, bulging radially inward from the hook 52. The inner bulge 56 has an arc-shaped surface facing radially inward from the hook 52. Corresponding to this inner bulge 56, a first outer bulge 46 is formed at one end of the groove 42 (the end on the opening 42A side), which engages with the inner bulge 56. The first outer bulge 46 is a part of the inner circumferential wall of the groove 42 that bulges radially outward from the groove 42, and the surface facing radially outward from the groove 42 is an arc-shaped surface.

[0030] As shown in Figure 9, when the hook 52 is in the retracted position, the first outer bulge 46 contacts the inner bulge 56 from the rear, thereby holding the hook 52 in the retracted position. When the hook 52 is rotated from the retracted position to the protruding position, the inner bulge 56 slides against the first outer bulge 46, causing one end of the hook 52 to elastically deform radially outward before elastically returning to its original shape.

[0031] As shown in Figure 7, a second outer bulge 48 is formed at the other end of the groove 42 (the end on the side of the opening 42B) that engages with the inner bulge 56. The second outer bulge 48 is formed when a part of the inner circumferential wall of the groove 42 bulges radially outward from the groove 42, and the surface facing radially outward from the groove 42 is formed in an arc shape.

[0032] When the hook 52 is in the protruding position, the second outer bulge 48 contacts the inner bulge 56 from the rear, holding the hook 52 in the protruding position. In this state, both ends of the hook 52 are supported by the head 34, and the middle part of the hook 52 protrudes from the head 34 to the rear. When the hook 52 moves from the retracted position to the protruding position and when it rotates from the protruding position to the retracted position, the inner bulge 56 slides against the second outer bulge 48, causing one end of the hook 52 to elastically deform radially outward before elastically returning to its original shape.

[0033] As shown in Figure 8, a stopper portion 58 is integrally formed on the other end 52B of the hook 52, protruding radially inward from the hook 52. This stopper portion 58 is prismatic (rectangular parallelepiped). Corresponding to this stopper portion 58, a stepped portion 50 is formed at one end of the groove portion 42, which engages with the stopper portion 58. The stopper portion 58 of the hook 52 contacts the stepped portion 50 when the hook 52 is in the protruding position. This configuration prevents the other end 52B of the hook 52 from falling off the head 34.

[0034] When a shopping bag is hung (hooked) onto the hook 52, the hook 52 is inserted through the handle of the shopping bag as it rotates from the stored position shown in Figures 2 and 5 to the protruding position shown in Figures 3 and 6. When the hook 52 is rotated to the protruding position in this state, both ends of the hook 52 are supported by the head 34, and the handle of the shopping bag is hooked onto the middle part of the hook 52. In this state, with both ends of the hook 52 supported by the head 34, as shown in Figures 7 and 8, parts of one end 52A and the other end 52B of the hook 52 are positioned between the head body 38 and the lid 40. This configuration allows the load applied from the shopping bag to the hook 52 to be supported by the lid 40.

[0035] In the vehicle seat 10 with the above configuration, the occupant's back is supported by the seat back 12, and the occupant's head is supported by the headrest 26. A pair of headrest bushes 30L and 30R have bush bodies 31 attached to the upper end of the frame 14 of the seat back 12, and the legs 28A of the stays 28 of the headrest 26 are inserted into the insertion holes 32 of each bush body 31.

[0036] In the other headrest bush 30R, a hook 52 is attached to the head 34 of the bush body 31, which is exposed and positioned above the seat back 12. The hook 52 is positioned to protrude from the head 34 toward the rear, allowing a shopping bag to be hung from it. Since the hook 52 can be stored inside the head 34, the appearance of the vehicle seat 10 can be improved.

[0037] Furthermore, the hook 52 is rotatably attached to the head 34 around the insertion hole 32, and the shopping bag is suspended with both ends 52A and 52B supported by the head 34 in the protruding position. This prevents the shopping bag from accidentally falling off the hook 52.

[0038] <Second Embodiment> Next, a second embodiment of the present invention will be described. Note that components and operations that are essentially the same as those in the first embodiment will be given the same reference numerals as in the first embodiment, and their descriptions will be omitted.

[0039] Figure 10 shows a part of the headrest bush 30R according to the second embodiment in a plan view. Figure 11 shows a part of the headrest bush 30R according to the second embodiment in a side view. This headrest bush 30R has a hook 60 that is slidably attached to the head 34 in the front-rear direction. This hook 60 is slidable relative to the head 34 between a retracted position shown by a solid line in Figures 10 and 11 and an extended position shown by a dashed line in Figures 10 and 11.

[0040] The above-described hook 60 has a pair of left and right sliding parts 62 that are supported so as to be slidable in the front-rear direction relative to the head 34, and a suspension part 64 that connects the rear ends of the pair of sliding parts 62 in the left-right direction. The pair of sliding parts 62 are elongated, roughly rectangular rods with the front-rear direction as their longitudinal direction. The suspension part 64 has a plate-like part 64A with the left-right direction as its longitudinal direction and the up-down direction as its plate thickness direction, and a hooking part 64B that extends upward and forward from the plate-like part 64A.

[0041] The head portion 34 of the headrest bush 30R has a pair of left and right slide holes 66 into which a pair of slide portions 62 are inserted, and a notch 68 into which the plate-shaped portion 64A of the suspension portion 64 is inserted. The pair of slide holes 66 are drilled in the head portion 34 along the front-rear direction and open toward the rear. An insertion hole 32 is located between the pair of slide holes 66. The pair of slide holes 66 communicate with the notch 68. The notch 68 opens toward the rear and toward both the left and right sides.

[0042] The head portion 34 of the headrest bush 30R has a pair of left and right retaining holes 70 that extend outward in the left and right direction from the front ends of a pair of slide holes 66. Corresponding to the pair of retaining holes 70, the front ends of a pair of slide portions 62 have a pair of left and right protrusions 72 that project outward in the left and right direction. When the hook 60 is in the retracted position, the pair of protrusions 72 fit into the pair of retaining holes 70, thereby holding the hook 60 in the retracted position.

[0043] When a vehicle occupant pulls the hook portion 64B of the hook 60 towards the rear, the pair of sliding portions 62 elastically deform in a direction that brings them closer together, causing the pair of protrusions 72 to disengage from the pair of retaining holes 70, and the hook 60 to slide towards the protruding position. The front ends of the pair of sliding portions 62 have claws 74 that protrude downward, and when the hook 60 reaches the protruding position, the claws 74 of the pair of sliding portions 62 catch on the pair of left and right stepped portions (reference numerals omitted) formed on the head portion 34. This restricts the hook 60 from sliding further rearward than the protruding position. The hook portion 64B of the hook 60, when pulled out to the protruding position, is configured so that the handle of a shopping bag can be hooked onto it.

[0044] In this embodiment as well, since the hook 60 can be stored inside the head 34, the appearance of the vehicle seat 10 can be improved. Furthermore, in this embodiment, since the hook 60 slides in the front-rear direction relative to the head 34, it is possible to easily displace the hook 60 between the protruding position and the stored position.

[0045] Although the present invention has been described above with reference to two embodiments, the present invention can be implemented with various modifications without departing from its spirit. Furthermore, it goes without saying that the scope of the present invention is not limited to the above embodiments. [Explanation of Symbols]

[0046] 10 Vehicle seats 12 Seatback 14 frames 26 Headrests 28 Stay 30R Headrest Bushing 31 Bush body 32 Insertion holes 34 Head 52 hooks 60 hooks 62 Slide section 64 Hanging section

Claims

1. A bush body having a head that is attached to the upper end of the seat back frame, has an insertion hole formed therein into which the headrest stay is inserted, and is positioned above the seat back, A hook is attached to the head so as to be rotatable around the insertion hole between a protruding position that extends from the head toward the rear of the seat and from which a shopping bag can be hung, and a storage position that is stored inside the head, and both ends of the hook are supported by the head in the protruding position, Satsuma headrest bush.

2. A seat back that supports the back of the occupant, A headrest that supports the head of the aforementioned occupant, The headrest bush according to claim 1, wherein the bush body is attached to the upper end of the frame of the seat back, and the stay of the headrest is inserted into the insertion hole, A vehicle seat equipped with [a specific feature / feature].

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