Worksheet

Abstract

To provide a work seat which improves workability in a state of seating in a cabin.SOLUTION: In a work seat, an end of a support member on a side opposite to a seating face part is so configured as to be placeable of an area of a vehicle body floor positioned below a seat cushion of a vehicle seat that overlaps with the vehicle seat in a plan view, or to be engageable with a frame of the vehicle seat. When the end of the support member is placed on the area of the vehicle body floor or is engaged with the frame, and a disengagement part engages with a striker, the seating face part is positioned at a position on or above the seat cushion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work sheet. [Background technology]

[0002] Patent document 1 discloses a safety support structure to which a child carrier can be attached, which is used for adult seats in vehicles equipped with ISOFIX loops, and which comprises a main body to be placed on the cushion of the adult seat, a pair of ISOFIX latches attached to the rear of the main body, a leg support attached near the front part of the main body so as to extend beyond the front edge of the cushion of the adult seat and abut against the floor of the vehicle, and an engagement mechanism for engaging the child carrier with the main body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2007-536161 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a seat that is removably positioned on a vehicle seat is supported by a support member that extends vertically downward from the seat cushion and abuts against the vehicle floor, there is a risk that the support member abutting against the vehicle floor will restrict the movement of an occupant sitting on the seat to pull their heels backward, which could reduce workability while seated inside the vehicle.

[0005] An object of the present invention is to provide a work seat that improves workability while seated in a vehicle interior. [Means for solving the problem]

[0006] In one aspect of the work seat of the present invention, the end of the support member opposite the seat cushion is configured to be able to be placed on an area of ​​the vehicle floor located below the seat cushion of the vehicle seat that overlaps with the vehicle seat in a plan view, or to be able to engage with the frame of the vehicle seat. When the end of the support member is placed on the area of ​​the vehicle floor or engages with the frame, and the engagement portion engages with the striker, the seat cushion is positioned on or above the seat cushion. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a work seat that improves workability while seated in a vehicle interior. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a partial side view of a work seat according to an embodiment, showing a state in which the work seat is positioned on a vehicle seat and an occupant is seated therein; [Figure 2] FIG. 2 is a partial perspective bottom view of the work seat according to the embodiment. [Figure 3] 1 is a partial side view of a work seat according to an embodiment, showing a state in which the work seat is positioned on a vehicle seat and an occupant is seated therein; [Figure 4A] 10 is a schematic cross-sectional view illustrating a length adjustment mechanism for a support member of a work seat according to an embodiment, showing a state in which the vertical length of the support member is set to a predetermined length. FIG. [Figure 4B] 4B is a schematic cross-sectional view illustrating the length adjustment mechanism for the support member of the work seat according to the embodiment, showing a state in which the vertical length of the support member is set longer than the length shown in FIG. 4A. [Figure 5A] 10 is a schematic partial bottom view illustrating the engagement / disengagement member spacing adjustment mechanism of the work seat according to the embodiment, showing a state in which a pair of engagement / disengagement members are arranged at a predetermined interval. FIG. [Figure 5B]5B is a schematic partial bottom view illustrating the engagement / disengagement member spacing adjustment mechanism of the work seat according to the embodiment, showing a state in which the spacing between the pair of engagement / disengagement members is wider than the spacing shown in FIG. 5A. FIG. [Figure 6A] 10A and 10B are diagrams for explaining a procedure for folding the work sheet according to the embodiment, showing the work sheet in a state before being folded. [Figure 6B] 10A and 10B are diagrams for explaining a procedure for folding the work sheet according to the embodiment, showing the work sheet in a folded state. [Figure 6C] FIG. 10 is a diagram illustrating a state in which the work seat according to the embodiment is being transported, with the front end of the seat cushion portion of the work seat facing upward. [Figure 6D] FIG. 2 is a diagram illustrating a storage state of the work seat according to the embodiment, in which the work seat is stored behind the vehicle seat. [Figure 7] FIG. 10 is a partial side view of a work seat according to a modified example of the embodiment, showing a state in which the work seat is positioned on a vehicle seat and an occupant is seated thereon. [Figure 8] FIG. 2 is a diagram for explaining the operation of the work seat according to the embodiment, and is a schematic front perspective view of a vehicle seat on which the work seat is disposed. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a work seat according to an embodiment will be described with reference to the drawings. In each drawing, FR and RR respectively indicate the front and rear of the work seat in the longitudinal direction, UP and DN respectively indicate the upper and lower directions of the work seat in the vertical direction, and LH and RH respectively indicate the left and right directions of the work seat. In the following description, the front and rear of the work seat in the longitudinal direction, the upper and lower directions of the work seat, and the left and right directions of the work seat in the horizontal direction will be referred to simply as "front," "rear," "upper," "lower," "left," and "right," respectively. The seat width direction is a direction parallel to the width direction of the vehicle seat. The direction facing the center of the seat in the seat width direction is referred to as the "inner width direction of the seat," and the direction facing the opposite direction to the inner width direction of the seat is referred to as the "outer width direction of the seat." Elements having the same function are designated by the same reference numerals, and redundant description will be omitted.

[0010] The work seat according to the embodiment can be removably positioned on a rear seat, which is a vehicle seat arranged on the vehicle floor, in the rear portion of the passenger compartment of a passenger car (not shown), for example. When positioning the work seat on the vehicle seat, the vehicle seat and the work seat are aligned. In other words, the front, rear, upper, lower, left, and right of the work seat correspond to the front, rear, upper, lower, left, and right of the vehicle seat, respectively.

[0011] As shown in FIGS. 1 and 3, the work seat 1 according to this embodiment includes a seat portion 10, an engaging / disengaging member 40, and a support member 50.

[0012] The seat 10 is an area of ​​the work seat 1 where the occupant P sits. The seat 10 includes a seat surface 12 that supports the occupant from below when the occupant sits on the work seat 1, and a backrest 15 that supports the occupant from behind. The front, rear, upper, lower, left, and right of the seat 10 correspond to the front, rear, upper, lower, left, and right of the work seat 1, respectively.

[0013] The seating surface 12 is a member having a generally rectangular parallelepiped shape that is flat in the vertical direction, and is positioned on or above the seat cushion 102 of the vehicle seat 100 when the work seat 1 is positioned on the vehicle seat 100. The seating surface 12 may be configured by covering a core material such as urethane foam with an exterior material such as woven fabric. For example, the urethane foam may be molded urethane having a resilience of 15% or more but less than 50% as determined by the test method described in JIS K 6400-3:2011, or high-resilience molded urethane having a resilience of 50% or more. Alternatively, a fabric made of woven polyester or other fibers in a mesh pattern may be attached to a frame member (not shown) with a predetermined tension.

[0014] With such a seat surface 12, when the work seat 1 is positioned on the vehicle seat 100 and the occupant P is seated on the work seat 1 (hereinafter referred to as the seated state), the contact area between the seat surface 12 and the occupant P can be increased, and the pressure input to the occupant P from the contact surface with the seat surface 12, i.e., body pressure, can be dispersed. Furthermore, in the seated state, the occupant P is prevented from sinking excessively into the seat surface 12, making it possible to further stabilize the posture of the occupant P.

[0015] The thickness of the seating surface 12 in the vertical direction is not particularly limited, and can be appropriately set depending on the value of the heel step, which is the distance between the seat surface of the seating surface and the vehicle floor of the vehicle seat on which the work seat 1 is installed. The shape of the seating surface 12 is not limited to the example shown in the figures. For example, the seating surface 12 may be substantially circular or elliptical in plan view, or the entire seating surface 12 may be curved so as to have a downwardly convex arc shape in front-to-rear view.

[0016] The backrest 15 is a wall-like member extending upward from the rear end of the seat 12, and is arranged to face the seat back 105 of the vehicle seat 100 in the front-to-rear direction when the work seat 1 is positioned on the vehicle seat 100. As illustrated in the figure, the backrest 15 may be supported so as to be able to recline relative to the seat 12 via a support shaft such as a hinge provided at the rear end of the seat 12.

[0017] Furthermore, the backrest 15 is curved in an arc shape that convexes forward when viewed in an axial direction parallel to the width direction of the seat 10, and is configured to support the upper pelvis or lumbar vertebrae of the occupant P from behind when in a seated state. For example, in one embodiment, the backrest 15 may support at least a portion of the third to fifth lumbar vertebrae of the occupant P from behind. In another embodiment, the backrest 15 may abut against the back surface of the occupant P corresponding to the third to fifth lumbar vertebrae and upper pelvis of the occupant P at a height of 15 cm to 25 cm above the seat surface, thereby providing support from behind. This configuration can more reliably support the lumbar region of the occupant P so that the pelvis and spine of the occupant P are in an upright position when in a seated state.

[0018] The backrest 15 may be made of a fabric made of polyester or other fibers woven into a mesh shape and attached to a frame member (not shown) with a predetermined tension.

[0019] Because the work seat 1 is equipped with a seat portion 10 including such a seat surface portion 12 and backrest portion 15, it is possible to reduce fatigue caused by the occupant P assuming an upright posture when seated, and to improve workability when seated.

[0020] The work seat 1 may include an armrest 17 made of, for example, resin. In the illustrated example, the rear end of the armrest 17 is pivotally supported by a hinge disposed on a fixture such as a bracket provided on the rear side of the backrest 15. Therefore, the armrest 17 is supported by the backrest 15 so as to be rotatable within a predetermined angle range around the hinge as a pivot. Therefore, for example, when a seated occupant P gets out of the vehicle or when the occupant P gets into the vehicle to be seated, the armrest 17 can be pivoted upward. This allows the occupant P to more easily get in and out of the vehicle. This improves the ease with which the occupant P can get in and out of the vehicle.

[0021] The work seat 1 may also include a pair of armrests, one on each of the left and right sides of the seat 10. Furthermore, the pair of armrests may be connected via a cylindrical, elongated member, such as a metal member, disposed at the rear of the seat 10 and extending in the width direction of the seat 10. As a result, when one of the pair of armrests is rotated, the other also rotates in conjunction with the rotation. In other words, the armrest 17 may include a pair of armrests supported by the backrest 15 so as to be rotatable in conjunction with the rotation. In this way, for example, when a seated occupant P exits the vehicle or when the occupant P gets into the vehicle to assume a seated position, when one of the pair of armrests is rotated upward, the other also rotates upward in conjunction with the rotation. This further improves the ease of getting in and out of the vehicle.

[0022] As shown in FIG. 2, a guide member 20 extending in the front-to-rear direction of the seat 10 is disposed on the underside of the seating surface 12. In the illustrated example, the guide member 20 includes a pair of guide members 20a and 20b. The pair of guide members 20a and 20b are hollow, rectangular pipes made of, for example, metal or hard resin. A bolt-shaped extension 25a and a cylindrical extension 25b are disposed on the front and rear sides of the guide member 20a, respectively, and extend toward the inside of the width direction of the seat 10. The guide member 20b is disposed spaced apart from the guide member 20a in the width direction of the seat 10. A bolt-shaped extension 25c and a cylindrical extension 25d are disposed on the front and rear sides of the guide member 20b, respectively, and extend toward the inside of the width direction of the seat 10. The extension portions 25a and 25c are arranged to face each other in the width direction of the seat portion 10, and the extension portions 25b and 25d are arranged to face each other in the width direction of the seat portion 10.

[0023] Extensions 25a and 25b are loosely fitted into fixtures such as brackets provided on the bottom surface of seat 12. More specifically, extensions 25a and 25b are each slidably inserted into openings provided in the fixtures that penetrate the seat 10 in the width direction. Therefore, guide member 20a is supported so as to be slidable in the width direction of seat 10. Similarly, extensions 25c and 25d are loosely fitted into fixtures provided on the bottom surface of seat 12, and guide member 20b is supported so as to be slidable in the width direction of seat 10.

[0024] A hollow cylindrical connecting member 30 extending in the width direction of the seat 10 is disposed between the guide members 20a and 20b. A screw thread is formed on the inner peripheral surface of the connecting member 30, and the connecting member 30 is configured to be able to threadably engage with the extending portion 25a of the guide member 20a and the extending portion 25c of the guide member 20b. In the example shown in FIG. 2, the extending portion 25a is threadably engaged with the connecting member 30 on the right side of the connecting member 30, and the extending portion 25c is threadably engaged with the connecting member 30 on the left side. Furthermore, a dial portion 31 having an outer diameter larger than the outer diameter of the remaining portion is formed in approximately the center of the connecting member 30 in the width direction of the seat 10. The outer peripheral surface of the dial portion 31 may be subjected to an anti-slip treatment such as knurling.

[0025] Here, by rotating connecting member 30 about a central axis parallel to the direction in which it extends, extending portion 25a and extending portion 25c are configured to interlock and move in and out of connecting member 30. For example, when connecting member 30 is rotated toward one side about the central axis, extending portion 25a and extending portion 25c move toward the inside in the width direction of seat 10, and when connecting member 30 is rotated toward the other side, extending portion 25a and extending portion 25c move toward the outside in the width direction of seat 10. To achieve this configuration, for example, extending portion 25a may be a right-handed thread and extending portion 25c may be a reverse-handed thread, and threads corresponding to the threads of extending portion 25a may be formed on an inner peripheral surface of one side of connecting member 30 and threads corresponding to the threads of extending portion 25c may be formed on an inner peripheral surface of the other side, and extending portion 25a may be screwed onto one side of connecting member 30 and extending portion 25c may be screwed onto the other side.

[0026] In this way, by adjusting the extension and retraction of extension portion 25a or extension portion 25c relative to connecting member 30, the distance between the pair of guide members 20a, 20b in the width direction of seat 10 can be adjusted. For example, in the state shown in Fig. 5A, by rotating dial unit 31 in the direction of arrow A and moving extension portion 25a and extension portion 25c toward the outside in the width direction of seat 10, the distance between the pair of guide members 20a, 20b can be widened as shown in Fig. 5B. Furthermore, because extension portion 25a and extension portion 25c extend and retract relative to connecting member 30 in conjunction with each other, the distance between the pair of guide members 20a, 20b and the center of seat 10 can be adjusted in the width direction of seat 10 while maintaining the same distance between each of the pair of guide members 20a, 20b and the center of seat 10.

[0027] 2, a hollow cylindrical pipe 32 may be interposed between the pair of guide members 20a and 20b. The extensions 25b and 25d of the guide members 20a and 20b are slidably inserted into both ends of the pipe 32 in the width direction of the seat portion 10, respectively.

[0028] The engaging and disengaging member 40 is disposed on the guide member 20 so as to be slidable along the guide member 20. In other words, the engaging and disengaging member 40 is inserted into the guide member 20 so that the outer wall portion of the engaging and disengaging member 40 and the inner wall portion of the guide member 20 are slidable between each other. In the example shown, the engaging and disengaging member 40 is a long member in the shape of a rectangular pillar extending rearward from the seat 10, and includes a pair of engaging and disengaging members 40a, 40b spaced apart in the width direction of the seat 10. The engaging and disengaging member 40a is inserted into the guide member 20a, and the engaging and disengaging member 40b is inserted into the guide member 20b.

[0029] The engaging / disengaging member 40 has an engaging / disengaging portion 42 at its rear end. In the illustrated example, the engaging / disengaging portion 42 is a latch that can be engaged with and disengaged from a generally U-shaped striker 109 that is formed by bending a metal cylindrical member and that is disposed between the seat cushion 102 and the seat back 105 of the vehicle seat 100. Engagement of the engaging / disengaging portion 42 with the striker 109 positions the work seat 1 in the vehicle seat 100, i.e., puts the work seat 1 in a positioned state. When the engaging / disengaging portion 42 is a latch, the work seat 1 can be fixed to the vehicle seat 100 and positioned more reliably. The striker 109 is, for example, a fixing device used in ISOFIX, a system for attaching a child safety seat (not shown) to the vehicle seat 100.

[0030] The engaging / disengaging portion 42 is not limited to a latch. In one embodiment, a notch may be formed as the engaging / disengaging portion 42 at the rear end of the engaging / disengaging member 40. The notch is, for example, a groove extending from one side of the engaging / disengaging member 40 to the other side in the width direction of the seat 10 on the underside of the engaging / disengaging member 40. The cross-sectional shape of the groove when viewed in the axial direction parallel to the width direction of the seat 10 may be a circle, a rectangle, a trapezoid, a polygon, or other shape as appropriate. The notch can be engaged with and disengaged from the striker 109. For example, by engaging the notch with the striker 109 from above, the work seat 1 can be restricted from moving in the fore-and-aft direction and positioned. When the engaging / disengaging portion 42 is a notch, the work seat 1 can be more easily positioned by the vehicle seat 100.

[0031] The striker 109 may be disposed on the vehicle floor 110. More specifically, the striker 109 may be disposed on the vehicle floor 110 in an area behind the seat cushion 102.

[0032] As described above, the distance between the pair of guide members 20a, 20b in the width direction of the seat 10 is adjustable. Furthermore, the distance between the pair of guide members 20a, 20b can be adjusted while maintaining the same distance between each of the pair of guide members 20a, 20b and the center of the seat 10. Therefore, the work seat 1 is provided with a locking / disengaging member spacing adjustment mechanism, which is a mechanism for adjusting the distance between the pair of locking / disengaging members 40a, 40b in the width direction of the seat 10. Furthermore, the locking / disengaging member spacing adjustment mechanism is a mechanism that can adjust the center of the pair of locking / disengaging members 40a, 40b in the width direction of the seat 10 so that it coincides with the center of the seat 10.

[0033] The mechanism for adjusting the gap between the engaging and disengaging members is not limited to the structure illustrated in the figures. For example, in one embodiment, threads may not be provided on the outer peripheral surfaces of the extension portions 25a and 25c and on the inner peripheral surface of the connecting member 30. In this case, an elongated hole whose longitudinal direction coincides with the extending direction of the connecting member 30 may be provided in the connecting member 30, and threaded holes may be provided in the extending portions 25a and 25c. Then, bolts are fastened to the threaded holes through the elongated holes, generating friction between the bolt heads and the connecting member 30, thereby restricting movement of the extending portions 25a and 25c in the width direction of the seat 10. Furthermore, to adjust the gap between the pair of engaging and disengaging members 40a, 40b, the bolts are loosened, the extension portions 25a and 25c are adjusted as needed relative to the connecting member 30, and the bolts are then tightened again to secure the connecting member 30.

[0034] The support member 50 is a member that supports the seating surface 12 and includes a downward extension 52 that extends downward from the seating surface 12. Furthermore, as illustrated in FIG. 2, the support member 50 may include a rearward extension 59 that extends rearward from the lower end of the downward extension 52. In the illustrated example, the downward extension 52, which is a metal plate-like member, for example, that has a substantially rectangular shape in a front-to-rear view, extends downward from the front side of the bottom surface of the seating surface 12. Furthermore, the rearward extension 59, which is a metal plate-like member, for example, that has a substantially rectangular shape in a plan view, extends rearward from the lower end of the downward extension 52. Note that, as shown in FIG. 7, the rearward extension 59 may include an engagement portion 67 that includes an upward extension 65 that extends upward from the rear end of the upward extension 52 and a second rearward extension 66 that extends rearward from the upper end of the upward extension 65.

[0035] The downward extension 52 may include a length adjustment mechanism that adjusts its length in the up-down direction. In one example of the length adjustment mechanism shown in FIGS. 4A and 4B , the downward extension 52 includes a first downward extension 52a and a second downward extension 52b. The first downward extension 52a and the second downward extension 52b are arranged so as to be in contact with each other in the front-to-rear direction. The first downward extension 52a has a hole 53 that is generally circular and opens in the front-to-rear direction, and the second downward extension 52b has a long hole 54 that is oval and opens in the front-to-rear direction, with the vertical direction as its longitudinal direction. A bolt 55 is passed through the hole 53 and the long hole 54 and fastened to a nut 56 provided on the rear side of the first downward extension 52a, generating friction between the first downward extension 52a and the second downward extension 52b, thereby securing them together.

[0036] For example, if it is desired to increase the length of downward extension portion 52 from the state illustrated in Fig. 4A, bolt 55 and nut 56 are loosened, second downward extension portion 52b is slid downward, and then bolt 55 and nut 56 are tightened to fix first downward extension portion 52a and second downward extension portion 52b together. This allows the length of downward extension portion 52 to be adjusted to be longer, as shown in Fig. 4B.

[0037] A washer 57 may be disposed between the head of the bolt 55 and the second downward extension 52b. This allows a surface pressure to be more reliably applied to the second downward extension 52b when the bolt 55 and the nut 56 are fastened together. Furthermore, a spring 58 may be disposed between the lower end of the first downward extension 52a and the rearward extension 59 in a state compressed in the vertical direction. This allows the repulsive force of the spring 58 to be applied to the first downward extension 52a and the rearward extension 59. Therefore, when the bolt 55 is loosened, the second downward extension 52b can be slid downward without any other operation, and the vertical dimension of the downward extension 52 can be adjusted to be longer.

[0038] 2, the support members 50 include two support members 50 spaced apart in the width direction of the seat 10, but are not limited to this. There may be one support member 50, or three or more support members 50. The positions of the support members 50 in the width direction of the seat 10 can be set appropriately depending on the width dimension of the seat 10.

[0039] The support members 50 may have handle portions 60. In the example shown in Fig. 2, the cylindrical handle portions 60 extending in the width direction of the seat portion 10 are fixed in contact with the downward extending portions 52 and rearward extending portions 59 of the two support members 50. The handle portions 60 may be made of, for example, metal, hard resin, or the like. In the example shown, the handle portions 60 extend to the outer ends of the support members 50 in the width direction of the seat portion 10, but they may be longer or shorter than this.

[0040] In the example shown in FIG. 1 or 3 , a region of the vehicle body floor 110 located directly below the vehicle seat 100 is raised to form a raised portion 111. Furthermore, the seat cushion 102 of the vehicle seat 100 is disposed on the raised portion 111. In the example shown, in the positioned state, the rearward extending portion 59 of the support member 50 is placed on the raised portion 111. More specifically, at least the rear end of the rearward extending portion 59, which is the end of the support member 50 opposite the seat surface 12, is placed on the raised portion 111 located directly below the seat cushion 102. In other words, the end of the support member 50 opposite the seat surface 12 can be placed in a region of the vehicle body floor 110 located below the seat cushion 102 of the vehicle seat 100 that overlaps with the vehicle seat 100 in a plan view. In one embodiment, the end of the support member 50 may be placed on a region of the vehicle floor 110 that overlaps with the seat cushion 102 in a plan view. In this manner, the seating surface 12 of the work seat 1 can be supported against the raised portion 111. By adjusting the vertical dimension of the downward extension 52 of the support member 50 to be longer, the work seat 1 may be positioned so that the front end of the seating surface 12 is positioned higher than the rear end, i.e., in a raised front position, as shown in FIG. 3 . In this case, a gap is present between the seating surface 10 and the seat cushion 102, and the work seat 1 is supported by the engaging / disengaging member 40 and the support member 50.

[0041] 7, the vehicle seat 100 has legs 115 below the seat cushion 102, and the legs 115 are fixed to the raised portions 111, thereby disposing the vehicle seat 100 on the vehicle floor 110. The rearward extending portion 59 of the support member 50 has an engaging portion 67, which is the end of the support member 50 opposite the seat surface 12, and the engaging portion 67 engages with the frame 107 of the vehicle seat 100. In other words, the end of the support member 50 opposite the seat surface 12 is configured to be engageable with the frame 107 of the vehicle seat 100. This allows the seat surface 12 of the work seat 1 to be supported relative to the frame 107.

[0042] In this way, when the end of the support member 50 opposite the seat portion 12 is placed on the vehicle floor 110 in an area that overlaps with the vehicle seat 100 in a plan view, or engages with the frame 107, and the engagement portion 42 engages with the striker 109 to position the work seat 1 on the vehicle seat 100, the seat portion 12 is positioned on or above the seat cushion 102.

[0043] Next, the effects of the work sheet 1 according to the embodiment will be described with reference to FIGS.

[0044] As shown in FIG. 1 , FIG. 3 , or FIG. 7 , by positioning the work seat 1 on the vehicle seat 100, an occupant P can sit on the work seat 1 inside the vehicle and perform tasks such as office work or VDT work. The vehicle seat 100 includes a soft, rearward-tilting seat cushion 102 and a seat back 105 to improve comfort during vehicle travel. Compared to a situation where the occupant P works while sitting on the vehicle seat 100, the work seat 1 distributes body pressure while seated, prevents the occupant P from sinking excessively into the seat surface 12, stabilizes the occupant P's posture, and supports the occupant P's lower back from behind. This reduces fatigue caused by the occupant P having to maintain an upright posture and improves workability while seated. When working while sitting on the work seat 1, a separate work desk 117 may be installed inside the vehicle.

[0045] (1) The work seat 1 according to the embodiment is a work seat 1 that is removably positioned on a vehicle seat 100 provided on a vehicle floor 110, and includes a seat portion 10 including a seat surface portion 12 and a backrest portion 15, an engaging / disengaging member 40 extending rearward from the seat portion 10 and having an engaging / disengaging portion 42 configured to be engageable with and disengageable from a striker 109 disposed on the vehicle seat 100 or the vehicle floor 110, and a support member 50 including a downward extending portion 52 extending downward from the seat surface portion 12. The end portion on the opposite side is configured to be able to be placed on an area of ​​the vehicle floor 110 located below the seat cushion 102 of the vehicle seat 100 that overlaps with the vehicle seat 100 in a plan view, or to be able to engage with the frame 107 of the vehicle seat 100, and when the end portion of the support member 50 is placed on that area of ​​the vehicle floor 110 or engages with the frame 107 and the engagement portion 42 engages with the striker 109, the seat portion 12 is positioned on or above the seat cushion 102.

[0046] Therefore, an occupant can perform work while sitting on the seat 10 disposed on or above the vehicle seat 100 in the vehicle cabin. Furthermore, the distance between the seat surface of the seat 12 and the vehicle floor 110 is greater than when the occupant sits directly on the vehicle seat 100. That is, the heel step is higher. This further improves workability while seated. Furthermore, the seat 12 is supported by placing the end of the support member 50 opposite the seat 12 on the vehicle floor 110 in an area that overlaps with the vehicle seat 100 in a plan view, or by engaging the end with the frame 107 of the vehicle seat 100. Therefore, compared to when the support member 50 is extended vertically downward from the seat 12 and placed in contact with the vehicle floor 110, the support member does not come into contact with the vicinity of the rear of the heel of the occupant P when seated, thereby ensuring a larger space behind the heel. This increases the area on the vehicle body floor 110 where the occupant P can place their feet, further improving workability while seated. Therefore, a work seat that improves workability while seated in the vehicle cabin can be provided.

[0047] (2) In the work seat 1 according to the embodiment, the downward extension portion 52 includes a mechanism for adjusting the length in the up-down direction.

[0048] This allows the angle of the seat surface of the seat 10 relative to the horizontal plane to be adjusted depending on the posture that the occupant P wants to take. For example, if the occupant P wants to work in an upright posture, the seat surface 12 can be adjusted so that it is approximately parallel to the horizontal plane, as shown in FIG. 1 or FIG. 7. If the occupant P wants to work in a leaning-back posture, the seat surface 12 can be adjusted so that it is tilted forward, as shown in FIG. 3. This allows the occupant P to work in a desired posture, and workability while seated can be more reliably improved.

[0049] (3) In the work seat 1 according to the embodiment, the engaging / disengaging member 40 includes a pair of engaging / disengaging members 40a, 40b spaced apart in the width direction of the seat portion 10, and is equipped with a mechanism for adjusting the spacing between the pair of engaging / disengaging members 40a, 40b in the width direction of the seat portion 10.

[0050] This allows the pair of engaging / disengaging members 40a, 40b to be positioned according to the distance between the strikers 109 provided on the vehicle seat 100. For example, as shown in FIG. 8 , in a vehicle rear seat configuration in which a pair of strikers 109a1, 109a2 is provided on one rear seat 120a and a pair of strikers 109b1, 109b2 is provided on the other rear seat 120b, the work seat 1 can be positioned not only relative to the strikers 109a1, 109a2 or the strikers 109b1, 109b2 but also relative to the strikers 109a2 and 109b1. That is, the work seat 1 can be positioned in the center of the rear seat. Furthermore, the position of the seat portion 10 can be adjusted in the width direction of the vehicle seat 100. This allows the occupant P to work in a more appropriate seating position, thereby more reliably improving workability while seated.

[0051] (4) The work seat 1 according to the embodiment includes a mechanism for adjusting the center of the pair of engaging and disengaging members 40a, 40b in the width direction of the seat 10 so that the center of the seat 10 coincides with the center of the seat 10.

[0052] This prevents the center of the seat 10 from shifting from the center of the pair of engaging and disengaging members 40a, 40b in the width direction of the seat 10, and more stably supports the seat 10. This further improves workability while seated.

[0053] (5) In the work seat 1 according to the embodiment, the backrest portion 15 is arranged so as to be able to recline relative to the seat portion 12, the engaging / disengaging member 40 is arranged so as to be able to slide along a guide member 20 provided on the seat portion 10 and extending in the fore-and-aft direction of the seat portion 10, and the downward extension portion 52 has a handle portion 60.

[0054] This allows the work seat 1 to be folded as shown in Figures 6A and 6B. From the assembled state shown in Figure 6A, in which the work seat 1 is ready for seating, the backrest 15 is tilted toward the seat 12 in the direction of arrow B, the engaging / disengaging member 40 is slid along the guide member 20 in the direction of arrow C to store it below the seat 12, and the armrests 17 are rotated within a predetermined angle range in the direction of arrow D around the hinges at the rear ends as pivots. This allows the work seat 1 to be folded as shown in Figure 6B. Furthermore, because the support member 50 has the handle 60, the work seat 1 can be carried by holding the handle 60 with the front end of the seat 12 facing upward, as shown in Figure 6C, for example. This makes it easier to transport the work seat 1. The work seat 1 folded in this manner can be stored by hanging the support member 50 in a storage device 121 provided at the rear of the vehicle seat 100, for example, as shown in Figure 6D. Therefore, when the occupant P is not using the work seat 1, the work seat 1 can be stored in an empty space inside the vehicle, such as the luggage space.

[0055] Furthermore, in the above embodiment, the example was described in which the work seat 1 is removably positioned on the rear seat of a vehicle, but it goes without saying that the work seat 1 according to the embodiment may also be removably positioned on a front seat, which is a vehicle seat located in the front part of the passenger compartment, such as a passenger seat. [Explanation of symbols]

[0056] 1 Worksheet 10 Seating area 12 Seat part 15 Backrest 20, 20a, 20b Guide member 40, 40a, 40b Engagement / disengagement members 42 Engagement / disengagement part 50 Support member 52 Downward extension part 60 Handle 100 Vehicle seats 102 seat cushion 107 frames 109,109a1,109a2,109b1,109b2 Striker 110 Body floor

Claims

1. A work seat that is detachably positioned on a vehicle seat provided on a vehicle body floor, a seat portion including a seat surface portion and a backrest portion; an engaging / disengaging member extending rearward from the seat portion and having an engaging / disengaging portion configured to be engageable with and disengageable from a striker disposed on the vehicle seat or the vehicle body floor; a support member including a downward extension portion extending downward from the seat portion; Equipped with an end portion of the support member opposite to the seat surface portion is configured to be able to be placed on an area of ​​the vehicle body floor located below a seat cushion of the vehicle seat that overlaps with the vehicle seat in a plan view, or to be able to engage with a frame of the vehicle seat; when an end of the support member is placed on the area of ​​the vehicle body floor or engaged with the frame, and the engagement / disengagement portion is engaged with the striker, the seating surface portion is positioned on or above the seat cushion, The support member is provided rearward of the front end of the seat portion.

2. A work seat that is detachably positioned on a vehicle seat provided on a vehicle body floor, a seat portion including a seat surface portion and a backrest portion; an engaging / disengaging member extending rearward from the seat portion and having an engaging / disengaging portion configured to be engageable with and disengageable from a striker disposed on the vehicle seat or the vehicle body floor; a support member including a downward extension portion extending downward from the seat portion; Equipped with an end portion of the support member opposite to the seat surface portion is configured to be able to be placed on an area of ​​the vehicle body floor located below a seat cushion of the vehicle seat, the area overlapping with the vehicle seat in a plan view; A work seat in which, when the end of the support member is placed on the area of ​​the vehicle floor and the engagement portion engages with the striker, the seat portion is positioned on or above the seat cushion.

3. The work seat according to claim 1 or 2, wherein the downward extension portion is provided with a mechanism for adjusting the length in the vertical direction.

4. The engaging and disengaging member includes a pair of engaging and disengaging members spaced apart in the width direction of the seat portion, The work seat according to claim 1 , further comprising a mechanism for adjusting a distance between the pair of engaging and disengaging members in a width direction of the seat portion.

5. The work seat according to claim 4, further comprising a mechanism for adjusting the center of the seat portion so that the center of the pair of engaging and disengaging members in the width direction of the seat portion coincides with the center of the seat portion.

6. The backrest is disposed so as to be able to recline relative to the seat, The engaging / disengaging member is slidably disposed along a guide member provided in the seat portion and extending in the front-rear direction of the seat portion, The work sheet according to claim 1 , wherein the downwardly extending portion has a handle portion.

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