Vehicular seat

Abstract

To obtain a vehicular seat which restricts displacement of an armrest in a state that a placement part is usable.SOLUTION: A vehicular seat 10 comprises a seat back 14, an armrest 18, a placement part 20, and a lock part 42. The armrest 18 is supported by the seat back 14, is provided to be displaceable between a stored position A1 and a deployed position A2, and supports the arm of an occupant of a vehicle from a seat lower side in a state of being arranged in the deployed position A2. The placement part 20 is provided on the armrest 18, and is set to be usable by being drawn out from the armrest 18 arranged in the deployed position A2. The lock part 42 restricts displacement of the armrest 18 arranged in the deployed position A2 to a stored position A1 side.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Patent Document 1 below discloses a front seat (vehicle seat) equipped with an armrest. The armrest of the front seat described in this document is provided with a table. The armrest of the front seat can be tilted toward the rear seat, and the table can be unfolded from the armrest, allowing passengers seated in the rear seat to use the table. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-321244 Summary of the Invention [Problem to be solved by the invention]

[0004] In a configuration in which a table or other mounting portion is deployed from an armrest, if the armrest is displaced while the mounting portion is in a usable state, it is conceivable that an object placed on the mounting portion may fall.

[0005] SUMMARY OF THE INVENTION In consideration of the above, an object of the present invention is to provide a vehicle seat that can prevent the armrest from being displaced when the mounting portion is usable. [Means for solving the problem]

[0006] The vehicle seat of the first embodiment comprises a seat back that supports the back of a vehicle occupant from the rear side of the seat, an armrest that is supported by the seat back and is movable between a storage position and an extended position, and that supports the arms of the vehicle occupant from the underside of the seat when in the extended position, a mounting portion that is provided on the armrest and can be pulled out from the armrest when in the extended position to become usable, and a locking portion that limits the displacement of the armrest when in the extended position toward the storage position.

[0007] In the vehicle seat of the first aspect, the seat back can support the back of the vehicle occupant from the rear side of the seat. Furthermore, by displacing the armrest from the storage position to the deployed position, the armrest can support the arms of the vehicle occupant from below the seat. Furthermore, the mounting portion can be used by pulling it out from the armrest when it is in the deployed position. Here, the locking portion restricts the armrest from being displaced toward the storage position when it is in the deployed position. This prevents the armrest from being displaced when the mounting portion is in the usable state.

[0008] The vehicle seat of the second aspect is the vehicle seat of the first aspect, further comprising an operating portion that is operated by a vehicle occupant to release the restriction on the displacement of the armrest imposed by the locking portion, and a covering portion that displaces to cover the operating portion when the placement portion is pulled out from the armrest.

[0009] In the vehicle seat of the second aspect, the armrest can be displaced from the deployed position to the stowed position by the operation of the operating unit by the vehicle occupant. When the mounting portion is pulled out from the armrest in the deployed position, the covering portion is displaced and covers the operating portion. This makes it possible to prevent or suppress the operating portion from being operated when the mounting portion is in the usable state.

[0010] A third aspect of the vehicle seat is a vehicle seat according to the second aspect, wherein the placement portion includes a slide portion that is slidably supported relative to the armrest and has the covering portion, and a placement portion main body that is supported by the slide portion.

[0011] In the vehicle seat of the third aspect, when the sliding portion of the mounting portion is slid relative to the armrest and the mounting portion is pulled out from the armrest in the deployed position, the operating portion is covered by the covering portion provided on the sliding portion, thereby preventing or suppressing the operating portion from being operated when the mounting portion main body is in the usable state.

[0012] The vehicle seat of the fourth aspect is the vehicle seat of the first aspect, wherein the rear end of the armrest when positioned in the deployed position is supported on the seat back so as to be rotatable with the left-right direction of the seat as the rotation axis direction, and an operating unit operated by a vehicle occupant is provided on the rotation axis of the armrest, and when the operating unit is operated with the armrest positioned in the deployed position, the locking unit limits the displacement of the armrest, and when the operating unit is operated with the armrest positioned in a position other than the deployed position, the locking unit is unable to limit the displacement of the armrest.

[0013] In a fourth aspect of the vehicle seat, the rear end of the armrest when in the deployed position is supported on the seat back so as to be rotatable about a rotation axis that coincides with the left-right direction of the seat, and an operating unit operated by a vehicle occupant is provided on the rotation axis of the armrest. This configuration allows rear seat occupants to more easily operate the operating unit compared to a configuration in which the operating unit is provided on the front end of the armrest when in the deployed position. Furthermore, in the vehicle seat of the fourth aspect, the armrest cannot be restricted from moving unless the operating unit is operated when the armrest is in the deployed position. This configuration ensures convenience by not interfering with the normal use of the armrest (such as extending or retracting), which is frequently operated, compared to a configuration in which the armrest's movement is automatically restricted at the same time as the armrest is placed in the deployed position. [Effects of the Invention]

[0014] The vehicle seat according to the present invention has the excellent effect of being able to suppress displacement of the armrest when the mounting portion is in a usable state. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a side view showing a vehicle seat according to an embodiment of the present invention; [Figure 2] 1 is a side view showing a vehicle seat according to an embodiment of the present invention, illustrating a state in which a placement portion provided on an armrest is usable. [Figure 3] FIG. 10 is a perspective view showing the armrest before the placement portion is pulled out. [Figure 4] FIG. 10 is a perspective view showing the armrest with the placing portion pulled out. [Figure 5] FIG. 10 is a perspective view schematically showing the locking portion, illustrating a state in which the displacement of the armrest is not restricted. [Figure 6] FIG. 10 is a perspective view schematically showing the locking portion, illustrating a state in which the displacement of the armrest is restricted. DETAILED DESCRIPTION OF THE INVENTION

[0016] A vehicle seat 10 according to an embodiment of the present invention will be described with reference to Figures 1 to 6. In the drawings, the arrow FR indicates the front side of the seat, the arrow UP indicates the upper side of the seat, the arrow LH indicates the left side in the seat width direction, and the arrow RH indicates the right side in the seat width direction. Furthermore, in the following description, unless otherwise specified, when referring to front-rear, up-down, and left-right directions, these refer to front-rear in the seat front-rear direction, up-down in the seat up-down direction, and left-right in the seat width direction.

[0017] 1, the vehicle seat 10 of this embodiment includes a seat cushion 12 that supports the buttocks of a seated occupant from below, a seat back 14 that supports the back of the seated occupant from the rear, and a headrest 16 that supports the head of the seated occupant from the rear. Also, as shown in Fig. 2, the vehicle seat 10 includes an armrest 18 that is supported at the left end and in the vertical middle of the seat back 14, and a mounting portion 20 that is pulled out from the armrest 18 for use.

[0018] As shown in FIG. 1 , a rear end portion, which is one end portion of the armrest 18, is supported on the seatback 14 so as to be rotatable about an axial direction extending in the left-right direction. This allows the armrest 18 to be tilted (displaced) between a storage position A1 and an extended position A2. When the armrest 18 is positioned in the storage position A1, the entire armrest 18 is positioned along the left side surface of the seatback 14. When the armrest 18 is positioned in the extended position A2, a region of the armrest 18 from its central portion in the fore-and-aft direction to its front end protrudes forward relative to the seatback 14. This allows the arm of a seated occupant to be supported from below by the region of the armrest 18 from its central portion in the fore-and-aft direction to its front end.

[0019] Next, we will explain the configuration of the armrest 18 and the placement portion 20 provided on the armrest 18. Note that the directions in the following explanation refer to the state in which the armrest 18 is placed in the unfolded position A2.

[0020] As shown in Figures 3 and 4, the armrest 18 includes an armrest main body 22 formed in the shape of a rectangular block with its longitudinal direction extending in the front-to-rear direction, and a lid portion 24 supported by the armrest main body 22. The rear end of the armrest main body 22 forms a supported portion 26 that is supported by the seat back 14 (see Figure 1, etc.). A storage recess 28 with an open upper side is formed in the armrest main body 22 forward of the supported portion 26. Small items such as sunglasses can be stored in the storage recess 28. The lid portion 24 is formed in the shape of a rectangular plate with its longitudinal direction extending in the front-to-rear direction. One end of the lid portion 24 in the short side direction is supported by the upper end of the right end of the armrest main body 22 via a hinge (not shown). The storage recess 28 can be opened and closed by tilting the lid portion 24 around the hinge.

[0021] The placing section 20 is, for example, a small table that is pulled out from the armrest 18. The placing section 20 includes a sliding section 30 that is supported on the armrest main body 22 so as to be slidable in the front-rear direction, and a placing section main body 32 that is supported on the sliding section 30.

[0022] The sliding portion 30 is formed in the shape of a rectangular plate extending in the front-rear direction with its thickness in the left-right direction. The sliding portion 30 is supported on the left end of the armrest main body 22 so as to be able to slide in the front-rear direction. A circular opening 34 is formed at the rear end of the sliding portion 30, penetrating the rear end of the sliding portion 30 in the left-right direction. The portion of the sliding portion 30 forward of the opening 34 is a covering portion 36.

[0023] The mounting section main body 32 includes two mounting plates 38, 40 whose longitudinal dimension is set to be shorter than that of the sliding section 30. One mounting plate 38 is formed as a rectangular plate extending in the longitudinal direction with its thickness in the vertical direction. The left end of the one mounting plate 38 is fixed to the lower end of the rear portion of the sliding section 30. The other mounting plate 40 is formed as a rectangular plate with dimensions corresponding to those of the one mounting plate 38. The end of the other mounting plate 40 on one side in the lateral direction (the left side in FIG. 4 ) is supported by the right end of the one mounting plate 38 via a hinge (not shown). This allows the other mounting plate 40 to be tilted relative to the one mounting plate 38 between a state in which the one mounting plate 38 and the other mounting plate 40 are vertically overlapping and a state in which the one mounting plate 38 and the other mounting plate 40 are aligned in the horizontal direction.

[0024] As shown in Figures 1, 3, 5 and 6, the supported portion 26 of the armrest main body 22 and the seat back 14 are provided with a locking portion 42 that limits the displacement of the armrest 18, which is positioned in the deployed position A2, toward the stored position A1.

[0025] 3, 5, and 6, the locking portion 42 is provided on the rotational axis of the armrest 18, and includes a button 44 as an operating portion that is pressed (operated) by a vehicle occupant, and a locking bar 46 that displaces together with the button 44. The locking portion 42 also includes a locking bar support portion 48 fixed to the armrest main body 22, and a locking bar engaging portion 50 fixed to the seat back 14 (see FIG. 1). The locking portion 42 also includes a biasing member 52 and a cam member 54 that regularly displace the button 44 and the locking bar 46.

[0026] The button 44 is formed in a disk shape with its thickness extending in the left-right direction. The button 44 is exposed from the supported portion 26 of the armrest main body 22 at the left end of the supported portion 26. When the front-to-rear positions of the opening 34 formed in the sliding portion 30 and the button 44 are aligned, the button 44 can be pressed through the opening 34 formed in the sliding portion 30.

[0027] The lock bar 46 is formed in the shape of a rectangular block with its longitudinal direction extending left-right. A cross section of the lock bar 46 cut along the vertical and front-rear directions has a cross-sectional shape in which the front-rear dimension is larger than the vertical dimension. Specifically, a cross section of the lock bar 46 cut along the vertical and front-rear directions has a rectangular shape with the front-rear direction as the longitudinal direction and the vertical direction as the short side. Furthermore, a biasing member engaging portion 56 with which the biasing member 52 engages is provided at the middle portion of the lock bar 46 in the longitudinal direction.

[0028] The lock bar support portion 48 is formed in the shape of a rectangular block and is fixed to the supported portion 26 of the armrest main body 22 inside the supported portion 26. A support hole 58 is formed in the lock bar support portion 48, penetrating the lock bar support portion 48 in the left-right direction. The shape of the inner edge of this support hole 58 when viewed from the right side is formed in a rectangular shape that corresponds to the shape of the outer edge of the lock bar 46 when viewed from the right side. The lock bar 46 is inserted into the support hole 58 from the left side, so that the lock bar 46 is supported by the lock bar support portion 48 and can slide in the left-right direction.

[0029] The lock bar engagement portion 50 is formed in the shape of a rectangular block and is fixed inside the seat back 14 to components that constitute the framework of the seat back 14. A lock hole 60 that is open on the lock bar 46 side is formed on the left side of the lock bar engagement portion 50. The shape of the inner edge of this lock hole 60 when viewed from the left side is rectangular, corresponding to the shape of the outer edge of the lock bar 46 when viewed from the right side (the shape of a cross section of the lock bar 46 cut along the up-down and front-to-rear directions). The right end of the lock bar 46 is inserted into the lock hole 60 from the left side, thereby restricting displacement of the lock bar 46. This restricts displacement of the armrest 18, which is positioned in the deployed position A2, toward the stored position A1.

[0030] One example of the biasing member 52 is a compression coil spring. This biasing member 52 is disposed between the biasing member engaging portion 56 of the lock bar 46 and the left surface of the lock bar support portion 48. As a result, the lock bar 46 is biased to the left (the side opposite the lock bar engaging portion 50) by the biasing member 52.

[0031] The cam member 54 is provided around the lock bar 46. This cam member 54 constitutes the main part of the knock cam mechanism. When the button 44 is pressed, the lock bar 46 moves to a position where the right end of the lock bar 46 is inserted into the lock hole 60 formed in the lock bar engagement portion 50, and the cam member 54 holds the lock bar 46 in that position. Next, when the button 44 is pressed again, the cam member 54 enters a state in which it allows the lock bar 46 to be displaced. As a result, the lock bar 46 is displaced toward the opposite side from the lock bar engagement portion 50 by the biasing force of the biasing member 52. As a result, the right end of the lock bar 46 comes out of the lock hole 60 formed in the lock bar engagement portion 50.

[0032] (Actions and Effects of This Embodiment) Next, the operation and effects of this embodiment will be described.

[0033] 1, in the vehicle seat 10 of the present embodiment described above, in order to use the armrest 18, the armrest 18 is tilted from the stored position A1 to the deployed position A2. This allows the arms of an occupant seated in the vehicle seat 10 to be supported from below by the armrest 18 positioned in the deployed position A2.

[0034] When an occupant seated in a vehicle seat arranged rearward of the vehicle seat 10 of this embodiment uses the mounting portion 20, the occupant first presses the button 44 through the opening 34 formed in the sliding portion 30, as shown in Figures 1, 3, 5, and 6. This causes the lock bar 46 to be inserted into the lock hole 60 formed in the lock bar engagement portion 50, and the position of the lock bar 46 is maintained in that position by the cam member 54. As a result, the armrest 18, which is arranged in the deployed position A2, is restricted from moving toward the stored position A1.

[0035] Here, when the button 44 can be pressed through the opening 34 formed in the sliding part 30, the placing part 20 is stored in the armrest 18. More specifically, when the placing part 20 is stored in the armrest 18, almost the entire sliding part 30 is arranged along the left side surface of the armrest main body 22, and the placing plates 38 and 40 that make up the placing part main body 32 are arranged along the underside of the armrest main body 22 with the placing plates 38 and 40 overlapping in the vertical direction.

[0036] Next, as shown in Figures 2, 4, and 6, the placing portion 20 is pulled rearward from the armrest 18. More specifically, by pulling the placing portion main body 32 rearward, the placing portion main body 32 is displaced rearward relative to the armrest main body 22. At this time, the sliding portion 30 slides rearward along the left side surface of the armrest main body 22. As a result, the button 44 is covered from the left side by the covering portion 36 of the sliding portion 30, making it impossible to press the button 44.

[0037] Next, the other mounting plate 40 is tilted relative to the one mounting plate 38, so that the one mounting plate 38 and the other mounting plate 40 are aligned in the left-right direction. This makes it possible to place an object on the mounting portion main body 32 (mounting plates 38, 40). In other words, the mounting portion 20 is ready for use.

[0038] In this embodiment, the armrest 18, which is disposed in the deployed position A2, is restricted from moving toward the stored position A1 by the locking portion 42. This makes it possible to prevent the armrest 18 from moving while the mounting portion 20 is in a usable state.

[0039] In addition, in this embodiment, when the placing portion 20 is in a usable state, the button 44 of the locking portion 42 is covered from the left side by the covering portion 36 of the sliding portion 30, making it impossible to press the button 44. This makes it possible to prevent or suppress the button 44 from being pressed when the placing portion 20 is in a usable state. This makes it possible to further suppress the displacement of the armrest 18 when the placing portion 20 is in a usable state.

[0040] In addition, in this embodiment, the covering portion 36 that covers the button 44 is provided on the sliding portion 30. This makes it possible to prevent an increase in the number of parts that make up the armrest 18 and the placing portion 20, compared to a configuration in which the covering portion 36 that covers the button 44 is provided separately from the sliding portion 30.

[0041] To store the mounting portion 20 in the armrest 18, first, the other mounting plate 40 is tilted relative to one mounting plate 38 so that the mounting plate 38 and the other mounting plate 40 are vertically overlapping. Next, the mounting portion main body 32 is pushed forward to displace the mounting portion main body 32 forward relative to the armrest main body 22. At this time, the sliding portion 30 slides forward along the left side surface of the armrest main body 22. As a result, the mounting portion 20 is stored in the armrest 18, as shown in FIG. 1 . To tilt the armrest 18 from the deployed position A2 to the stored position A1, as shown in FIGS. 1 , 5 , and 6 , the button 44 is pressed through the opening 34 formed in the sliding portion 30. As a result, the cam member 54 enters a state in which it allows the lock bar 46 to be displaced, and the lock bar 46 is displaced away from the lock bar engagement portion 50 by the biasing force of the biasing member 52. As a result, the right end of the lock bar 46 comes out of the lock hole 60 formed in the lock bar engagement portion 50, allowing the armrest 18, which is disposed in the extended position A2, to tilt toward the storage position A1. Then, by tilting the armrest 18 from the extended position A2 to the storage position A1, the armrest 18 can be disposed in the storage position A1.

[0042] Furthermore, in this embodiment, by positioning the armrest 18 in the unfolded position A2, the cross-sectional shape of the lock bar 46 cut in the up-down and front-rear directions corresponds to the shape of the inner edge of the lock hole 60 when viewed from the left side. In other words, when the armrest 18 is positioned in a position other than the unfolded position A2, the cross-sectional shape of the lock bar 46 cut in the up-down and front-rear directions does not correspond to the shape of the inner edge of the lock hole 60 when viewed from the left side. This makes it possible to prevent the lock bar 46 from being inserted into the lock hole 60 when the armrest 18 is positioned in a position other than the unfolded position A2. In other words, it is possible to prevent the armrest 18 from being inadvertently locked.

[0043] In addition, in this embodiment, the locking portion 42 is provided on the rotation axis of the armrest 18 (at the rear end of the armrest 18). In this configuration, compared to a configuration in which the locking portion 42 is provided on the front end side of the armrest 18, a passenger in the rear seat can more easily operate the locking portion 42 (button 44).

[0044] Furthermore, in this embodiment, the displacement of the armrest 18 cannot be restricted unless the button 44 is operated when the armrest 18 is positioned in the deployed position A2. Compared to a configuration in which the displacement of the armrest 18 is automatically restricted at the same time as the armrest 18 is positioned in the deployed position A2, this configuration does not interfere with the normal use of the armrest 18, which is operated frequently (the work of deploying and storing it), and ensures convenience.

[0045] In the present embodiment, an example has been described in which the covering portion 36 that covers the button 44 is provided on the sliding portion 30, but the present invention is not limited to this. For example, depending on the configuration and position of the locking portion 42, the covering portion 36 that covers the button 44 may be configured to be provided separately from the sliding portion 30.

[0046] Furthermore, in the present embodiment, an example has been described in which the button 44 of the locking unit 42 cannot be operated when the placement unit 20 is usable, but the present invention is not limited to this. Whether or not the button 44 of the locking unit 42 cannot be operated when the placement unit 20 is usable can be determined appropriately taking into consideration the ease of use of the armrest 18 and the placement unit 20, etc.

[0047] The above describes one embodiment of the present invention, but the present invention is not limited to the above, and it goes without saying that it can be implemented in various other modified forms within the scope of the gist of the present invention. [Explanation of symbols]

[0048] 10 Vehicle seats 14 Seat back 18 Armrest 20 Placement section 30 Slide section 32 Mounting unit main body 36 Covering part 42 Lock Section 44 Buttons (operation section) A1 Storage position A2 Deployed position

Claims

1. a seat back that supports the back of a vehicle occupant from the rear side of the seat; an armrest supported by the seat back, displaceable between a storage position and an extended position, and configured to support the arms of a vehicle occupant from below the seat when the armrest is disposed at the extended position; a placing portion provided in the armrest and configured to be usable by being pulled out from the armrest when the armrest is in the deployed position; a locking portion that restricts displacement of the armrest disposed in the deployed position toward the stored position; A vehicle seat comprising:

2. an operating unit that is operated by a vehicle occupant to release the restriction on displacement of the armrest by the locking unit; a covering portion that is displaced to cover the operating portion when the placing portion is pulled out from the armrest; The vehicle seat according to claim 1 , further comprising:

3. 3. The vehicle seat according to claim 2, wherein the mounting portion includes a slide portion slidably supported on the armrest and having the covering portion, and a mounting portion main body supported by the slide portion.

4. a rear end of the armrest disposed in the deployed position is supported by the seat back so as to be rotatable about a rotation axis in the left-right direction of the seat, An operating unit operated by a vehicle occupant is provided on a rotation axis of the armrest, When the operating unit is operated with the armrest in the deployed position, the locking unit limits the displacement of the armrest, 2. The vehicle seat according to claim 1, wherein when the operating unit is operated while the armrest is positioned at a position other than the deployed position, the locking unit is unable to restrict the displacement of the armrest.

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