Seat canopy device

Abstract

A seat canopy device is provided that ensures the size of a canopy body and can be stored in a lower position. The device comprises a first link (31) and a second link (32), which are two links that connect a canopy body (10) and a seat back (SB) in a manner that forms a four-link mechanism between the two links. The canopy body (10) is unfolded and stored relative to the seat back (SB) in the front-rear direction of the seat by rotating in cooperation with each other. The movable side connection points where the first link and the second link are respectively connected to the canopy body are located above the seat in the maximum unfolded position (A1) and below the seat in the maximum stored position relative to the fixed side connection points where the first link and the second link are respectively connected to the seat back. Furthermore, the first movable side connection point is arranged in a longitudinal arrangement above the seat in the maximum unfolded position (A1) relative to the second movable side connection point, and is arranged in a transverse arrangement behind the seat in the maximum stored position.

Description

Technical Field

[0001] The present invention relates to a seat canopy device. Background Art

[0002] Patent Document 1 discloses a seat canopy device comprising a dome-shaped canopy body and a link that assembles the canopy body to the side of a seat back. The link is rotatably connected to the seat back. This rotation switches the canopy body between a deployed position, in which it extends forward of the seat, and a stored position, in which it moves to the rear of the seat to prevent forward extension.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2007-105224 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] The seat canopy device described in Patent Document 1 has a shape that projects significantly forward to ensure a wide interior space. Consequently, when the canopy body is stored, it projects significantly upward from its connection point with the seat backrest. This creates concerns that the canopy body may interfere with the vehicle's ceiling or become bulky, making it difficult to store properly. Therefore, the present invention provides a seat canopy device that maintains the required size for the canopy body while allowing it to be stored at a lower position.

[0008] Means for solving problems

[0009] In order to solve the above-mentioned problems, the seat canopy device of the present invention adopts the following means.

[0010] Specifically, the seat canopy device of the present invention includes a first link and a second link. The first and second links connect the canopy body and the seat back, forming a four-link mechanism between the canopy body and the seat back. The first and second links rotate in conjunction with each other to deploy and store the canopy body relative to the seat back in the fore-aft direction of the seat. The first and second links rotate as follows. In the maximum deployment position, in which the canopy body is fully deployed forward of the seat, a first movable-side connection point, serving as the connection point of the first link to the canopy body, is located above the seat relative to a first fixed-side connection point, serving as the connection point of the first link to the seat back. A second movable-side connection point, serving as the connection point of the second link to the canopy body, is also located above the seat relative to a second fixed-side connection point, with the first movable-side connection point and the second movable-side connection point arranged longitudinally above the seat. In the maximum storage position, in which the canopy body is fully stored behind the seat, the first movable-side connection point is located below the seat relative to the first fixed-side connection point. The second movable-side connection point is also located below the seat relative to the second fixed-side connection point, with the first movable-side connection point positioned laterally behind the seat relative to the second movable-side connection point.

[0011] According to the above configuration, the first movable-side connection point, which is positioned vertically above the seat relative to the first fixed-side connection point and above the seat relative to the second movable-side connection point in the maximum deployed position, is positioned horizontally below the seat relative to the first fixed-side connection point and behind the seat relative to the second movable-side connection point in the maximum stored position. Therefore, even with a large structure that causes the canopy body to extend significantly forward from the seatback when fully deployed, it can be stored in a lowered position when fully stored, minimizing its extension forward and above the seatback.

[0012] The seat canopy device of the present invention may also be configured as follows. The canopy body is formed into an upwardly meandering shape having a side rising portion that rises from a side portion of the seat back toward the top of the seat in the maximum deployed position, and a front extending portion that extends from the rising front end of the side rising portion toward the front of the seat. The first movable side connection point and the second movable side connection point are connected to the side rising portion of the canopy body.

[0013] According to the above configuration, since the canopy body is formed in an upwardly curved shape, even if the canopy body is mounted at a low position relative to the seat back, the canopy body can be deployed so as to be less likely to interfere with body parts such as shoulders and arms of the seated occupant.

[0014] Furthermore, the seat canopy device of the present invention may also be configured as follows: The first fixed-side connection point is arranged longitudinally above the seat relative to the second fixed-side connection point. The second movable-side connection point is located above the seat relative to the first fixed-side connection point in the maximum deployed position, and is located below the seat relative to the first fixed-side connection point in the maximum stored position.

[0015] According to the above configuration, the second movable side connection point is located above the seat in the maximum deployment position relative to the first fixed side connection point, and is switched to be below the seat in the maximum storage position.

[0016] Furthermore, the seat canopy device of the present invention may also be configured as follows: the second fixed-side connection point is located forward of the seat and below the seat relative to the first fixed-side connection point, and the second movable-side connection point is located forward of the seat and below the seat relative to the second fixed-side connection point in the maximum stored position.

[0017] According to the above configuration, the second movable side connection point moves forward relative to each fixed side connection point due to movement to the storage position, thereby suppressing rearward extension of the awning body compared to a case where the awning body rotates along a single axis.

[0018] Furthermore, the seat canopy device of the present invention may be further configured as follows: the seat canopy device further includes an intermediate stop mechanism capable of releasably stopping the rotation of the first link and / or the second link at an intermediate deployment position between the maximum deployment position and the maximum storage position by applying a locking force.

[0019] According to the above configuration, even when the canopy body cannot be fully extended due to interference with a large passenger, the canopy body can be fixed at an appropriate position that does not interfere with the passenger by the midway stop mechanism.

[0020] Furthermore, the seat canopy device of the present invention may be further configured as follows: The seat canopy device further includes a fixing frame that is detachably fixed to the seat back and has a first fixed-side connecting point and a second fixed-side connecting point.

[0021] According to the above configuration, the canopy body and the first and second links can be easily attached and detached with respect to the seat back simply by attaching and detaching the fixing frame.

[0022] Furthermore, the seat canopy device of the present invention may be further configured as follows: The canopy body has a rod-shaped handle extending in the seat vertical direction and / or seat front-rear direction on the side of the seat back in the maximum storage position.

[0023] According to said structure, can use as the auxiliary component of the support when the awning main body of maximum storage gets on and off the vehicle for the passenger.Here, the seat side also comprises the position that stretches out towards the seat front, the seat rear from the side portion of the seat.

[0024] The seat canopy device of the present invention may also be configured as follows. The canopy body includes a flexible canopy that can be deployed in a dome-like shape or stored in a folded shape, and a main frame that forms a skeleton along the periphery of the canopy. The handle is formed by a portion of the main frame that is not engaged with the canopy and is disposed in a rod-like manner on the side of the seat back in the maximum storage position.

[0025] According to the above configuration, a part of the main frame can be used as a handle.

[0026] Furthermore, the seat canopy device of the present invention may also be configured as follows: the canopy body further includes a bracket on the inner side of the front cover portion, the front cover portion being deployed in a manner facing the seat back from the front of the seat in the maximum deployed position, and the bracket being capable of holding a mobile device having a display screen facing rearward of the seat.

[0027] According to the above structure, the seated passenger can place the mobile device on the holder and use it without using his hands.

[0028] Furthermore, the seat canopy device of the present invention may be further configured as follows: The bracket further includes an adjuster capable of adjusting the holding angle of the mobile device.

[0029] According to the above configuration, even if the occupant reclines and tilts the seat back forward or backward, the angle of the mobile device supported by the bracket can be freely adjusted so as to face the occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective view of the awning device according to the first embodiment.

[0031] Figure 2 is a side view of the canopy assembly in the maximum deployed position.

[0032] Figure 3 is a side view of the awning unit in the maximum storage position.

[0033] Figure 4 is a side view of the canopy assembly in the mid-deployed position.

[0034] Figure 5 It is a perspective view of the awning device unit in the maximum deployed position.

[0035] Figure 6 It is an enlarged stereoscopic view of the midway stop mechanism.

[0036] Figure 7It is a perspective view of the awning device unit in the maximum storage position.

[0037] Figure 8 It is an enlarged side view of the four-section linkage mechanism in the maximum deployed position.

[0038] Figure 9 It is an enlarged side view of the four-section linkage mechanism in the maximum storage position.

[0039] Figure 10 It is an enlarged stereoscopic view of the bracket.

[0040] Figure 11 It is an enlarged perspective view showing a modified example of the bracket.

[0041] Figure 12 It is a side view showing a modified example of the canopy device.

[0042] Figure 13 It is a perspective view showing a modified example of the canopy device. DETAILED DESCRIPTION

[0043] Below, use Figure 1-11 In the following description, when directions such as front, back, top, bottom, left, and right are indicated, these directions are indicated in the drawings.

[0044] <First embodiment>

[0045] First, the structure of a seat canopy device 1 according to a first embodiment of the present invention will be described. The seat canopy device 1 of this embodiment is a dome-shaped member that is mounted on a bus seat and covers the head of a seated passenger from above. The bus seat is configured such that, for example, the left side faces the aisle of the bus. The seat canopy device 1 is as follows: Figure 1 As shown, the bus seat comprises a dome-shaped canopy body 10 extending forward from the seat back SB of a bus seat, and a fixing frame 20 to which the canopy body 10 is attached. The fixing frame 20 is a generally arch-shaped member extending upward across the upper edge of the seat back SB. The fixing frame 20 has side fixing portions 21, which constitute its two arms, fixed to the side surfaces of the seat back SB.

[0046] The canopy body 10 includes a roughly arched main frame 11 connected to a fixed frame 20 and extending forward from both sides of the seat back SB, and a canopy 12 spanning between the main frame 11 and the fixed frame 20. The main frame 11 forms the lower edge of the canopy body 10. The fixed frame 20 forms the rear edge of the canopy body 10. Furthermore, the canopy body 10 includes three roughly arched sub-frames 13 connected to the main frame 11 via rotational shafts 11f. Each sub-frame 13 maintains the canopy 12 in a dome-shaped, stretched position.

[0047] Main frame 11 Figure 2 As shown, the main frame 11 is formed into an upwardly curved shape, comprising side rising portions 11a rising upward from the side surfaces of the seat back SB and a front extension portion 11b extending forward from the front ends of the side rising portions 11a. Therefore, for example, in a configuration where two adjacent bus seats have narrower seat widths, even if the canopy body 10 attached to the bus seat has a width narrower than the shoulder width of the seated passenger, the main frame 11 is less likely to interfere with the seated passenger's shoulders, arms, and other body parts. Consequently, compared to a configuration where the main frame 11 does not curve upward, the canopy body 10 can be installed at a lower position. This allows the canopy body 10 to provide a wider coverage of the passenger, extending to a lower height. Furthermore, while the canopy body 10 can be compactly formed in the horizontal direction as described above, the front extension portion 11b ensures the canopy body 10's size, ensuring a wider coverage area forward.

[0048] like Figure 2 As shown, the connection between the main frame 11 and the fixed frame 20 is specifically that the side rising portion 11a of the main frame 11 is connected to the side fixing portion 21 of the fixed frame 20 via the first link 31 and the second link 32. Thus, a four-link mechanism 30 is formed on each side between the main frame 11 and the fixed frame 20. By means of this four-link mechanism 30, the canopy body 10 can be moved to the maximum deployment position A1 (see FIG. 1 ) in which it is deployed to the maximum extent in front of the seat. Figure 2 ) and the maximum storage position B (refer to Figure 3 ) along the seat forward and backward direction.

[0049] like Figure 3 As shown in FIG. 1 , as the canopy body 10 moves to the maximum storage position B, the main frame 11 pivots in a manner that it jumps backward. As a result, the front extension portion 11b of the main frame 11 is configured to extend upward along the seat back SB. The maximum deployment position A1 is determined by expanding the canopy 12 into a dome shape (see FIG. 1 ). Figure 1 The maximum storage position B is achieved by the sub-frame 13, which has moved rearward due to the rotation of the main frame 11, engaging with the first stopper 23a of the fixed frame 20. At the maximum storage position B, the canopy 12 is folded and stored in an accordion shape. Thus, the canopy body 10 extends widely forward when fully deployed, but collapses to a compact shape in the front-to-back direction when fully stored.

[0050] <Fixed frame 20>

[0051] The following describes the specific structure of the seat canopy device 1. Figure 1 、 2As shown, the seat back SB includes side fixing portions 21 attached to each side of the seat back SB, a rear connecting portion 22 that connects the upper portions of the side fixing portions 21 across the rear surface of the seat back SB, and an upper connecting portion 23 that connects the upper portions of the rear connecting portions 22 extending upward from the seat, across the upper edge of the seat back SB. The rear connecting portion 22 passes through the rear surface of the seat, thereby improving the strength of the fixing frame 20 without hindering the seating of passengers. Each side fixing portion 21 is detachably attached to the seat back SB. Thus, by removing each side fixing portion 21, the fixing frame 20 and the canopy body 10 attached to the fixing frame 20 can be easily removed from the seat back SB.

[0052] like Figure 5 As shown, the upper connecting portion 23 is connected to the rear connecting portion 22 via a rotating shaft 22a in a manner that allows it to rotate forward and backward. The upper connecting portion 23 has a first stopper 23a and a second stopper 23b. The first stopper 23a is provided for locking the sub-frame 13 that moves to the rear when the awning body 10 is stored from the front. The second stopper 23b abuts against the upper side of the rear connecting portion 22 when the upper connecting portion 23 rotates rearward. The rearward rotation of the upper connecting portion 23 is restricted by the abutment of the second stopper 23b. Through the above structure, the upper connecting portion 23 is pushed back rearward by the sub-frame 13 being locked with the first stopper 23a, and is restricted from rotating by the second stopper 23b abutting against the rear connecting portion 22. Thus, the awning body 10 is restricted to the maximum storage position B (refer to Figure 7 ).

[0053] <Awning body 10>

[0054] Main frame 11 Figure 2 As shown, it has a lower inclined portion 11c extending obliquely downward from the front end of the extension of the front extension portion 11b and an upper inclined portion 11d extending obliquely upward from the front end of the extension of the lower inclined portion 11c in the maximum deployment position A1. Through the lower inclined portion 11c, the canopy body 10 can cover a wider space from the front extension portion 11b toward the front and downward. Through the upper inclined portion 11d, the main frame 11 can be appropriately configured in a manner that avoids excessive downward lowering. Therefore, it can be made difficult for the main frame 11 to interfere with the hands and arms of the occupant. And, as Figure 3 As shown, in the maximum storage position B, the front end of the lower inclined portion 11c protrudes forward from the side of the seat back SB. This makes it easier for an occupant to grasp the lower inclined portion 11c and deploy the canopy body 10. Furthermore, the upper inclined portion 11d prevents the stored canopy body 10 from excessively extending forward of the seat. This makes it less likely that the canopy body 10 will interfere with the occupant's head.

[0055] And, the main frame 11 is as Figure 5 As shown, the front cover portion 11e is provided, which extends in the seat width direction by connecting the front ends of the upper inclined portions 11d. A holder 14 capable of holding mobile devices such as smartphones and tablets is attached to the center portion of the front cover portion 11e in the seat width direction via an adjuster 15. Figure 10 As shown, bracket 14 extends from the inner side of front cover 11e in a roughly J-shaped configuration that faces rearward when viewed from the side. By placing the mobile device on bracket 14, the display can be kept facing the seated occupant without the user's hand. Adjuster 15 includes a rotation axis 15a that can change the angle of bracket 14 relative to front cover 11e. This allows the display of the mobile device supported by bracket 14 to be freely adjusted to face the occupant as the angle of canopy body 11e changes due to seat reclining.

[0056] like Figure 1 As shown, a portion of the front extension portion 11b is an exposed structure that is not engaged with the tent 12. Figure 3 As shown, it functions as a handle 11g, which becomes an auxiliary part for supporting the passengers when getting on and off the vehicle in the maximum storage position B. The handle 11g extends in the up-down direction on the side of the seat. A portion of the handle 11g extends rearward from the side of the seat back SB. As a result, a gap is easily formed between the handle 11g and the seat back SB, and the handle 11g can be easily grasped. When the passenger sits on the seat from the left side, the passenger can grasp the handle 11g provided on the left side of the seat back SB to support the body. It should be noted that when the bus seat faces the aisle provided on the right side of the seat, grasp the handle 11g provided on the right side of the seat back SB. As Figure 5 As shown, three sub-frames 13 are provided on the main frame 11. Two of the sub-frames 13 are connected to the downward inclined portion 11c via respective rotation shafts 11f, and one is connected to the front extending portion 11b.

[0057] <Four-section link mechanism 30>

[0058] like Figure 6 As shown, the first link 31 and the second link 32 are connected to the outer side surface of the side fixing portion 21 of the fixing frame 20 in the seat width direction, and are connected to the inner side surface of the side rising portion 11a of the main frame 11 in the seat width direction. Figure 8 、 9As shown, the first link 31 has a first fixed-side connection point 31a as a connection point to the fixed frame 20 and a first movable-side connection point 31b as a connection point to the main frame 11. Furthermore, the second link 32 has a second fixed-side connection point 32a as a connection point to the fixed frame 20 and a second movable-side connection point 32b as a connection point to the main frame 11. The first and second links 31, 32 cooperate with each other to rotate about the connection points 31a, 31b, 32a, and 32b, respectively, to rotate the canopy body 10 in the front-to-back direction.

[0059] like Figure 8 As shown, in the maximum deployed position A1, the first movable-side connection point 31b is arranged in a longitudinal arrangement, located above and to the rear of the first fixed-side connection point 31a. The first movable-side connection point 31b is arranged in a longitudinal arrangement, located above and to the front of the second movable-side connection point 32b. It should be noted that a longitudinal arrangement means that the vertical component of the line segment connecting the two connection points is longer than the front-to-back component. The second movable-side connection point 32b is arranged above and to the rear of the first fixed-side connection point 31a. The first link 31 is formed to bend forward to avoid interference with the second movable-side connection point 32b.

[0060] The second movable-side connection point 32b is arranged vertically above and behind the second fixed-side connection point 32a. The first fixed-side connection point 31a is also arranged vertically above and behind the second fixed-side connection point 32a. The second connecting rod 32 is bent backward to avoid interference with the first fixed-side connection point 31a. The line segment connecting the first movable-side connection point 31b and the first fixed-side connection point 31a is longer than the line segment connecting the second movable-side connection point 32b and the second fixed-side connection point 32a. Furthermore, the line segment connecting the first movable-side connection point 31b and the second movable-side connection point 32b is longer than the line segment connecting the first fixed-side connection point 31a and the second fixed-side connection point 32a.

[0061] like Figure 9 As shown, in the maximum storage position B, the first movable-side connection point 31b is arranged in a longitudinal arrangement, located below and behind the first fixed-side connection point 31a. The first movable-side connection point 31b is arranged in a transverse arrangement, located behind and below the second movable-side connection point 32b. It should be noted that the transverse arrangement means that the front-to-back component of the line segment connecting the two connection points is longer than the vertical component. The second movable-side connection point 32b is arranged in a longitudinal arrangement, located below and in front of the second fixed-side connection point 32a.

[0062] As described above, the first movable-side connection point 31b is arranged longitudinally above the second movable-side connection point 32b in the maximum deployed position A1, but is arranged transversely behind the second movable-side connection point 32b in the maximum stored position B. Therefore, the front extension portion 11b of the main frame 11, which extends significantly forward in the maximum deployed position A1, is stored in the maximum stored position B with its extension suppressed toward the front of the seat.

[0063] Furthermore, in the maximum deployed position A1, the first and second movable-side connection points 31b and 32b, which serve as connection points with the main frame 11, are located above the first and second fixed-side connection points 31a and 32a, which serve as connection points with the fixed frame 20. However, in the maximum stored position B, the first and second links 31 and 32 pivot about the first and second fixed-side connection points 31a and 32a, respectively, so the first and second movable-side connection points 31b and 32b are located below the first and second fixed-side connection points 31a and 32a. Therefore, in the maximum stored position B, the canopy body 10 is stored at a lower position, preventing it from extending above the seat.

[0064] <Clamping frame 40>

[0065] like Figure 6 As shown, a clamping frame 40 is provided on the outer sides of the first and second links 31, 32 in the seat width direction. The clamping frame 40 is an elongated plate-like member extending in the vertical direction of the seat. The central portion of the clamping frame 40 in the vertical direction is concavely bent inward in the seat width direction. This central portion is connected to the first and second links 31, 32, straddling the first and second fixed-side connection points 31a, 32a. Thus, the clamping frame 40 sandwiches the first and second links 31, 32 in the left-right direction between the clamping frame 40 and the fixed frame 20.

[0066] Through this clamping, the first link 31 and the second link 32 are subjected to a locking force that suppresses rotation due to friction between the fixing frame 20 and the clamping frame 40. As a result, the first link 31 and the second link 32 can be stopped in the middle of rotation. In other words, the canopy body 10 can be stopped at any position in the middle of deployment. Figure 4 As shown, if the canopy body 10 cannot be deployed to the maximum deployment position A1 for a large passenger, for example, the canopy body 10 can be stopped at the intermediate deployment position A2, where the canopy body 10 floats rearward from the maximum deployment position A1, so as to avoid interference with the seated passenger. Here, the clamping frame 40 corresponds to the "intermediate stop mechanism" of the present invention.

[0067] <Side cover 50>

[0068] like Figure 2 、 6 As shown, the side cover plates 50 connected to both ends of the clamping frame 40 are provided on the outer side of the clamping frame 40 in the seat width direction. The side cover plates 50 are approximately semicircular plate-shaped components. The side cover plates 50 cover the four-link mechanism 30 and the clamping frame 40 from the outer side in the seat width direction. Figure 1 As shown, the appearance of the seat canopy device 1 when viewed from the outside can be improved. Figure 3 、 9 As shown, the side cover 50 is configured not to cover the handle 11g of the main frame 11 from the outer side in the seat width direction. This prevents the handle 11g from becoming difficult to grasp.

[0069] In summary, the seat canopy device 1 of the first embodiment has the following configuration: It should be noted that the reference numerals shown in parentheses below correspond to the respective configurations shown in the above-described embodiment.

[0070] That is, a seat canopy device (1) of a first embodiment includes a first link (31) and a second link (32), the first link (31) and the second link (32) being two links (31, 32) that connect a canopy body (10) and a seat back (SB) in a manner that forms a four-link mechanism (30) between the canopy body (10) and the seat back (SB), and by rotating in cooperation with each other, the canopy body (10) is deployed and stored relative to the seat back (SB) in the front-rear direction of the seat. The first link (31) and the second link (32) rotate as follows. In a maximum deployment position (A1) in which the canopy body (10) is deployed to the maximum extent forward of the seat, a first movable side connection point (31b) serving as a connection point of the first link (31) to the canopy body (10) is located above the seat relative to a first fixed side connection point (31a) serving as a connection point of the first link (31) to the seat back (SB). The second movable side connection point (32b) serving as the connection point of the second link (32) to the canopy body (10) is also located above the seat relative to the second fixed side connection point (32a) serving as the connection point of the second link (32) to the seat back (SB), and is arranged in a longitudinal arrangement such that the first movable side connection point (31b) is located above the seat relative to the second movable side connection point (32b). In the maximum storage position (B) in which the canopy body (10) is stored to the maximum extent behind the seat, the first movable side connection point (31b) is located below the seat relative to the first fixed side connection point (31a). The second movable side connection point (32b) is also located below the seat relative to the second fixed side connection point (32a), and is arranged in a transverse arrangement such that the first movable side connection point (31b) is located behind the seat relative to the second movable side connection point (32b).

[0071] With this structure, the first movable side connection point (31b) is located above the seat relative to the first fixed side connection point (31a) and arranged in a longitudinal arrangement relative to the seat relative to the second movable side connection point (32b) in the maximum deployment position (A1), and is located below the seat relative to the first fixed side connection point in the maximum storage position (B) and is switched to a transverse arrangement relative to the seat relative to the rear of the seat relative to the second movable side connection point (32b). Therefore, even if the canopy body (10) is formed into a large structure that greatly protrudes forward from the seat back (SB) when the canopy body is fully deployed, it can be stored in a low position in a manner that suppresses the protrusion from the seat back (SB) to the front and above the seat less when the canopy body is fully stored.

[0072] The canopy body (10) is formed into an upward winding shape having a side rising portion (11a) rising from the side of the seat back (SB) toward the top of the seat in the maximum deployment position (A1) and a front extension portion (11b) extending from the rising front end of the side rising portion (11a) toward the front of the seat. A first movable side connection point (31b) and a second movable side connection point (32b) are connected to the side rising portion (11a) in the canopy body (10).

[0073] With this structure, since the canopy body (10) is formed in an upward winding shape, even if the canopy body (10) is installed at a lower position relative to the seat back (SB), the canopy body (10) can be deployed in a manner that is unlikely to interfere with the body parts such as shoulders and arms of the seated passenger.

[0074] Furthermore, the first fixed side connection point (31a) is formed in a longitudinal arrangement above the seat relative to the second fixed side connection point (32a). The second movable side connection point (32b) is located above the seat in the maximum deployment position (A1) relative to the first fixed side connection point (31a), and is located below the seat in the maximum storage position (B) relative to the first fixed side connection point (31a).

[0075] With this structure, the second movable side connection point (32b) is located above the seat in the maximum deployment position (A1) relative to the first fixed side connection point (31a), and is switched to be below the seat in the maximum storage position (B). Thus, the canopy body (10) can be stored at a lower position.

[0076] Furthermore, the second fixed side connection point (32a) is located in front of the seat and below the seat compared to the first fixed side connection point (31a), and the second movable side connection point (32b) is located in front of the seat and below the seat compared to the second fixed side connection point (32a) in the maximum storage position (B).

[0077] With this structure, the second movable side connection point (32b) moves forward relative to each fixed side connection point (31a, 32a) due to movement to the storage position, thereby suppressing the awning body (10) from extending backward compared to the case where the awning body (10) rotates on a single axis.

[0078] Furthermore, the invention also has an intermediate stop mechanism (40) which can stop the rotation of the first link (31) and / or the second link (32) at an intermediate deployment position (A2) between the maximum deployment position (A1) and the maximum storage position (B) in a releasable manner by applying a locking force.

[0079] With this structure, even if the canopy body (10) cannot be fully extended due to interference with a larger passenger, the canopy body (10) can be fixed at an appropriate position that does not interfere with the passenger by the midway stop mechanism (40).

[0080] Furthermore, the invention also comprises a fixing frame (20) which is fixed to the seat back (SB) in a detachable manner and is provided with a first fixing side connection point (31a) and a second fixing side connection point (32a).

[0081] By adopting this structure, the canopy body (10), the first link (31) and the second link (32) can be easily assembled and disassembled relative to the seat back (SB) only by assembling and disassembling the fixed frame (20).

[0082] Furthermore, the canopy body (10) has a rod-shaped handle (11g) which extends in the seat vertical direction and / or the seat front-rear direction on the seat side of the seat back (SB) at the maximum storage position (B).

[0083] By adopting such a structure, the canopy main body (10) in the maximum storage state can be used as an auxiliary member for supporting passengers when getting on and off the vehicle.

[0084] The canopy body (10) includes a flexible canopy (12) that can be unfolded in a dome shape or stored in a folded shape, and a main frame (11) that forms a skeleton along the periphery of the canopy (12). The handle (11g) is formed by a portion of the main frame (11) that is not engaged with the canopy (12) and is exposed in a rod-like manner on the side of the seat back (SB) in the maximum storage position (B).

[0085] With this structure, a part of the main frame (11) can be used as a handle (11g).

[0086] Furthermore, the canopy body (10) is further provided with a bracket (14) on the inner side of the front cover portion (11e), and the front cover portion (11e) is unfolded in a manner facing the seat back (SB) from the front of the seat in the maximum unfolding position (A1), and the bracket (14) can keep a mobile device with a display screen facing the rear of the seat.

[0087] With this structure, a seated passenger can place the mobile device on the bracket (14) and use it without using his hands.

[0088] Furthermore, the bracket (14) is further provided with an adjuster (15) capable of adjusting the holding angle of the mobile device.

[0089] With this structure, even if the passenger reclines the seat back (SB) forward or backward, the angle of the mobile device supported by the bracket (14) can be freely adjusted toward the passenger.

[0090] <Other Implementation Methods>

[0091] Although the present invention has been described above using one embodiment, the present invention can be implemented in various forms other than the above embodiment.

[0092] 1. The seat canopy device can also be widely used for seats used in various vehicles other than automobiles, such as railways, aircraft, ships, etc., and seats other than vehicles used in public facilities such as movie theaters and homes.

[0093] 2. In addition to the structure in which the canopy covers the frame constituting the skeleton, the canopy body may also be a structure composed of a resin component formed into a dome shape. In this case, it may be a structure in which a plurality of small dome-shaped resin components are connected in a manner to form a continuous large dome shape, or it may be a structure in which the resin components are folded smaller in a manner overlapping each other. The canopy body folded in this way may be connected to the seat back via the first link and the second link and unfolded and stored in the front-rear direction of the seat. The canopy body may also be a structure having a handle separately from the main frame. The canopy body may also be a structure without a bracket for holding a mobile device. In addition, the canopy body may also be a structure such as replacing the above-mentioned bracket 14 with a bracket 14. Figure 11 As shown, the structure includes a bracket 16 that is directly engaged with the front cover portion 11e of the main frame 11 and does not have an angle adjustment function.

[0094] 3. The main frame may be configured to extend from its connection point with the seat back toward the front of the seat without an upward meander. The main frame may also be configured to have no downward or upward extensions. The sub-frame may be configured to have only one, rather than multiple. Two, four, or more sub-frames may also be configured.

[0095] 4. The fixing frame does not need to be arch-shaped, but may be a separate bracket attached to each side of the seat back. The fixing frame may also not have a portion that spans and connects to the rear surface of the seat back.

[0096] 5. The first and second fixed side connection points may be directly connected to the seat back. The first and second movable side connection points may be connected to the front extension, the lower inclined portion, and the upper inclined portion in addition to the side rising portion. Furthermore, the first and second movable side connection points may be connected to a frame, bracket, or the like disposed within the canopy body separately from the main frame. Furthermore, the first and second movable side connection points may be connected to a canopy body formed of a molded material such as resin.

[0097] 6. The connection points of the first and second links may be positioned in any relationship other than that shown in the above embodiment, as long as the following configuration is adopted: During coordinated rotation of the first and second links in the seat fore-aft direction, in the maximum deployed position, the first movable-side connection point is located above the first fixed-side connection point, and the second movable-side connection point is also located above the second fixed-side connection point, with the first movable-side connection point arranged vertically above the second movable-side connection point. In the maximum stored position, the first movable-side connection point is located below the first fixed-side connection point, and the second movable-side connection point is also located below the second fixed-side connection point, with the first movable-side connection point arranged horizontally behind the second movable-side connection point. For example, the first fixed-side connection point may be located forward of the second fixed-side connection point. The first fixed-side connection point may also be located below the second fixed-side connection point. The first fixed-side connection point may be arranged in a transverse arrangement relative to the second fixed-side connection point. The second movable-side connection point may be located below the first fixed-side connection point in the maximum deployed position. The second movable-side connection point may be located behind the first fixed-side connection point and / or the second fixed-side connection point in the maximum stored position. The first movable-side connection point may be located forward of the first fixed-side connection point. The first movable-side connection point may be located forward of the first fixed-side connection point in the maximum stored position. The line segment connecting the first movable-side connection point and the first fixed-side connection point may be shorter than the line segment connecting the second movable-side connection point and the second fixed-side connection point. Furthermore, the line segment connecting the first movable-side connection point and the second movable-side connection point may be shorter than the line segment connecting the first fixed-side connection point and the second fixed-side connection point.

[0098] 7. In addition to the structure that applies a locking force to the first link and the second link by friction when clamped by the clamping frame, the mid-stop mechanism can also be a structure in which, for example, recessed and raised portions, hooks, or other locking parts provided on the side of the rotating structure such as the canopy body and each link, and other locking parts provided on the side of the non-rotating structure such as the fixed frame and seat back, are stagedly locked so that the canopy body can be stopped at multiple mid-deployment positions in a releasable manner.

[0099] 8. Such as Figure 12 、 Figure 13 As shown in FIG. 1 , the lower inclined portion 11 c of the main frame 11 may be shortened. This allows the stand 14 to be arranged at the height of the passenger's sight line in the maximum deployment position.

[0100] 9. Such as Figure 12 、 Figure 13 As shown, a lower end sub-frame 13U may be added to the sub-frame 13 so that the canopy body 10 covers the occupant more widely to a lower range in the height direction.

[0101] Description of Reference Numerals

[0102] 1 Seat canopy device

[0103] 10Awning body

[0104] 11 Main frame

[0105] 11a Side raised portion

[0106] 11b front extension

[0107] 11c lower inclined portion

[0108] 11d upper inclined part

[0109] 11e front cover

[0110] 11f Rotation axis

[0111] 11g handle

[0112] 12 tents

[0113] 13 sub-frames

[0114] 13U lower subframe

[0115] 14 brackets

[0116] 15 regulator

[0117] 15a Rotation axis

[0118] 16 brackets

[0119] 20 fixed frame

[0120] 21 side fixing part

[0121] 22 rear connection

[0122] 22a Rotation axis

[0123] 23 upper connection part

[0124] 23a First stopper

[0125] 23b Second stopper

[0126] 30 four-section connecting rod mechanism

[0127] 31 First connecting rod

[0128] 31a First fixed side connection point

[0129] 31b First movable side connection point

[0130] 32 Second connecting rod

[0131] 32a Second fixed side connection point

[0132] 32b Second movable side connection point

[0133] 40 Clamping frame (midway stop mechanism)

[0134] 50 side cover

[0135] SB seat back

[0136] A1 maximum expansion position

[0137] A2 mid-expansion position

[0138] B Maximum storage position.

Claims

1. A seat canopy device, wherein: The seat canopy device includes a first link and a second link, the first link and the second link being two links that connect a canopy body and a seat back to form a four-link mechanism between the canopy body and the seat back, and the canopy body is deployed and stored relative to the seat back in the front-rear direction of the seat by rotating in cooperation with each other. The first link and the second link are rotated in the following manner: in the maximum deployment position in which the canopy body is maximally deployed toward the front of the seat, a first movable-side connection point as a connection point of the first link relative to the canopy body is located above the seat more than a first fixed-side connection point as a connection point of the first link relative to the seat back, and a second movable-side connection point as a connection point of the second link relative to the canopy body is also located above the seat more than a second fixed-side connection point as a connection point of the second link relative to the seat back, and the first movable-side connection point is located above the seat with respect to the second movable-side connection point. The first movable side connection point is arranged in a longitudinal direction such that the component of the vertical direction in the line segment connecting the first movable side connection point and the second movable side connection point is longer than the component in the front-back direction. When the canopy body is stored at the maximum storage position behind the seat, the first movable side connection point is located below the seat more than the first fixed side connection point, and the second movable side connection point is also located below the seat more than the second fixed side connection point. The first movable side connection point is located behind the seat relative to the second movable side connection point, and the front-back direction component in the line segment connecting the first movable side connection point and the second movable side connection point is arranged in a transverse direction such that the component is longer than the vertical direction component.

2. The seat canopy device according to claim 1, wherein: The canopy body is formed in an upward winding shape having a side rising portion rising from a side portion of the seat back toward the upper side of the seat in the maximum deployment position and a front extending portion extending from the rising front end of the side rising portion toward the front side of the seat. The first movable side connection point and the second movable side connection point are connected to the side rising portion of the canopy body.

3. The seat canopy device according to claim 1 or 2, wherein: The first fixed-side connection point is formed in a longitudinal arrangement above the seat relative to the second fixed-side connection point. The second movable-side connection point is located above the seat relative to the first fixed-side connection point in the maximum deployed position, and is located below the seat relative to the first fixed-side connection point in the maximum stored position.

4. The seat canopy device according to claim 1 or 2, wherein: The second fixed-side connection point is located forward of the seat and below the seat relative to the first fixed-side connection point, and the second movable-side connection point is located forward of the seat and below the seat relative to the second fixed-side connection point at the maximum storage position.

5. The seat canopy device according to claim 1 or 2, wherein: The seat canopy device further includes an intermediate stop mechanism capable of releasably stopping the rotation of the first link and / or the second link at an intermediate deployment position between the maximum deployment position and the maximum storage position by applying a locking force.

6. The seat canopy device according to claim 1 or 2, wherein: The seat canopy device further includes a fixing frame that is detachably fixed to the seat back and is provided with the first fixed side connection point and the second fixed side connection point.

7. The seat canopy device according to claim 1 or 2, wherein: The canopy body has a rod-shaped handle that extends in a seat up-down direction and / or a seat front-rear direction on a seat side of the seat back at the maximum storage position.

8. The seat canopy device according to claim 7, wherein: The canopy body comprises a flexible canopy that can be unfolded in a dome shape or stored in a folded shape, and a main frame constituting a skeleton along the periphery of the canopy. The handle is formed by a portion of the main frame that is not engaged with the tent and is exposed in a rod-like shape on the seat side of the seat back at the maximum storage position.

9. The seat canopy device according to claim 1 or 2, wherein: The canopy body further includes a bracket on the inner side of the front cover portion. The front cover portion is deployed in a manner facing the seat back from the front of the seat in the maximum deployment position, and the bracket can hold a mobile device with a display screen facing the rear of the seat.

10. The seat canopy device according to claim 9, wherein: The bracket further includes an adjuster capable of adjusting the holding angle of the mobile device.

11. The seat canopy device according to claim 2, wherein: In the maximum deployed position, the front lower end of the canopy body is located below the side rising portion.

12. The seat canopy device according to claim 1, wherein: The first link has a first bending point facing the second movable side connection point at the maximum expansion position, The second link has a second bending point facing the first fixed side connection point in the maximum deployed position.

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