Seat

Abstract

To provide a seat to which a seat pad formed of plural components can be integrated rigidly.SOLUTION: A seat comprises: a seat cushion pad 20 having a ventilation path 21; and a blower device connected to the ventilation path 21. The seat cushion pad 20 comprises: a pad body 100; and a cover member 200 which is overlapped to a top surface of the pad body 100, and forms the ventilation path 21 between it and the pad body 100. The cover member 200 has a first cover member 210 overlapped to the top surface of the pad body 100 and a second cover member 220 overlapped to the top surface of the first cover member 210. The first cover member 210 is fastened to the pad body 100, and the second cover member 220 is fastened to both of the first cover member 210 and the pad body 100.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a seat including a seat pad having an air passage and a blower device connected to the air passage. [Background technology]

[0002] As an example of a seat pad having an air passage, Patent Document 1 discloses a cushion pad composed of a cushion pad main body and a slab bonded to the seat surface side of the cushion pad main body. In this technology, the slab has a two-layer structure composed of a plate-shaped front slab layer and a plate-shaped back slab layer, and the air passage is composed of an air introduction hole provided in the cushion pad main body, a groove-shaped air distribution passage provided in the back slab layer, and a plurality of hole-shaped air supply passages provided in the front slab layer. The cushion pad is obtained by bonding the back slab layer and the front slab layer to form a two-layer slab, and bonding and integrating this slab to the seat surface side of the cushion pad main body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-095342 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a seat pad made of multiple parts, when a person sits on the slab layer and the center of the slab layer is deformed so as to be concave, the edge of the slab layer tries to separate from the cushion pad body. In the conventional structure, there is a risk that the edge of the slab layer will peel off from the cushion pad body. The same can be said about the relationship between the front slab layer and the back slab layer.

[0005] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a seat in which a seat pad made up of multiple parts can be firmly integrated. Another object of the present invention is to easily determine the positions of the pad body and the cover member that constitute the seat pad. Another object of the present invention is to improve seating comfort. Another object of the present invention is to determine the positions of the pad body and the cover member with high accuracy. Another object of the present invention is to prevent incorrect assembly of the pad body and the cover member. Another object of the present invention is to provide a seat pad with a simple structure. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the seat of the present invention comprises a seat pad having an air passage, and a blower connected to the air passage, the seat pad comprising a pad main body and a cover member arranged overlapping the surface of the pad main body facing the occupant to form the air passage between the pad main body and the cover member, the cover member comprising a first cover member arranged overlapping the surface of the pad main body facing the occupant, and a second cover member arranged overlapping the surface of the first cover member facing the occupant, the first cover member being fixed to the pad main body, and the second cover member being fixed to both the first cover member and the pad main body.

[0007] According to this configuration, the pad body, the first cover member and the second cover member are fixed to one another, so that the seat pad made up of a plurality of parts can be firmly integrated.

[0008] In the above-described seat, the first cover member may be configured such that its surface opposite the occupant side is fixed to the occupant side surface of the pad main body, and the second cover member may be configured such that its surface opposite the occupant side is fixed to both the occupant side surface of the first cover member and the occupant side surface of the pad main body.

[0009] With this, the surfaces to which force is applied when a person sits on the seat are fixed to each other, so that the seat pad, which is made up of multiple parts, can be integrated even more firmly.

[0010] In the above-described seat, one of the pad main body and the first cover member may be provided with a first engagement protrusion having a shape that protrudes when viewed from the seat occupant's side, and the other of the pad main body and the first cover member may be provided with a first engagement recess having a shape that is recessed when viewed from the seat occupant's side, into which the first engagement protrusion fits.

[0011] According to this, when placing the cover member on the pad body, the positions of the pad body and the cover member can be easily determined by engaging the first engagement protrusion with the first engagement recess.

[0012] In the above-described seat, the first engagement protrusion is provided on the pad main body, and the second cover member can be configured so that the surface opposite the occupant's side is fixed to the occupant's side surface of the first engagement protrusion.

[0013] According to this, the boundary between the first engagement protrusion and the first engagement recess, which is the discontinuity of the seat pad made up of multiple parts, can be covered with the second cover member, thereby improving the seating feeling.

[0014] In the above-mentioned sheet, the first engagement protrusion includes a first protrusion and a second protrusion arranged side by side with a gap in a predetermined direction, and the first engagement recess includes a first recess into which the first protrusion fits, and a second recess into which the second protrusion fits.

[0015] This allows the positions of the pad body and the cover member to be determined with high precision.

[0016] In the sheet described above, the first recess and the second recess may have different shapes.

[0017] According to this, for example, if the orientation or front and back of the first cover member is incorrect when placing the first cover member on the pad body, the first engagement convex portion and the first engagement concave portion will not engage correctly, thereby preventing incorrect assembly of the pad body and the cover member.

[0018] In the above-described seat, the seat pad has a central portion and left and right side portions provided on both the left and right sides of the central portion and protruding toward the occupant further than the central portion, and the first engagement convex portion and the first engagement concave portion can be configured to be provided more inward than the side portions in the left-right direction.

[0019] With this, the first engagement protrusion and the first engagement recess are provided in the central portion which is flatter than the side portions, so that the seat pad can be configured simply compared to, for example, a configuration in which the first engagement protrusion and the first engagement recess are provided on an inclined surface of the side portion.

[0020] In the above-described seat, the seat pad can have left and right hanging grooves for hanging the cover material, and the first engagement protrusion and the first engagement recess can be configured to be located more inward than the hanging grooves in the left-right direction.

[0021] In the above-described seat, the seat pad is a padding material of a seat cushion, and one of the pad main body and the second cover member is provided with a second engagement protrusion at a front end, and the other of the pad main body and the second cover member is provided with a second engagement recess into which the second engagement protrusion fits.

[0022] According to this, when placing the cover member on the pad body, the positions of the pad body and the cover member can be easily determined by engaging the second engaging protrusion and the second engaging recess. Also, when the first engaging protrusion and the first engaging recess are provided, the positions of the pad body and the cover member can be accurately determined by further providing the second engaging protrusion and the second engaging recess.

[0023] In the above-described seat, the second engagement protrusions and the second engagement recesses may be configured to differ in at least one of shape, size, arrangement position, and number according to the specifications of the seat.

[0024] According to this, for example, when attempting to place a second cover member of a sheet with different specifications on the pad body, the second engagement convex portion and the second engagement concave portion will not engage properly, thereby preventing misassembly of the pad body and cover member with different specifications. Effect of the Invention

[0025] According to the present invention, a seat pad made up of a plurality of parts can be firmly integrated.

[0026] In addition, according to the present invention, the surface of the first cover member opposite the occupant side is fixed to the surface of the pad main body opposite the occupant side, and the surface of the second cover member opposite the occupant side is fixed to the first cover member and the surface of the pad main body opposite the occupant side, thereby making it possible to more firmly integrate the seat pad, which is made up of multiple parts.

[0027] Furthermore, according to the present invention, the first engagement convex portion is provided on one of the pad body and the first cover member, and the first engagement concave portion is provided on the other, so that the positions of the pad body and the cover member can be easily determined.

[0028] In addition, according to the present invention, the seating feeling can be improved by providing a first engagement protrusion on the pad body and fixing the surface of the second cover member opposite the occupant side to the surface of the first engagement protrusion on the occupant side.

[0029] In addition, according to the present invention, the first engagement convex portion includes a first convex portion and a second convex portion, and the first engagement recess portion includes a first recess portion and a second recess, so that the positions of the pad body and the cover member can be determined with high precision.

[0030] Furthermore, according to the present invention, by making the first recess and the second recess have different shapes, it is possible to prevent incorrect assembly of the pad main body and the cover member.

[0031] Also, according to the present invention, the first engaging protrusions and the first engaging recesses are provided more inward than the side portions in the left-right direction, thereby allowing the seat pad to have a simple configuration.

[0032] In addition, according to the present invention, by providing a second engagement convex portion on one of the pad main body of the seat cushion and the second cover member, and providing a second engagement concave portion on the other, the positions of the pad main body and the cover member can be easily determined.

[0033] Furthermore, according to the present invention, by varying the shapes of the second engaging protrusions and the second engaging recesses depending on the specifications of the seat, it is possible to prevent erroneous assembly of a pad main body and a cover member having different specifications. [Brief description of the drawings]

[0034] [Figure 1] 1 is a perspective view of a vehicle seat as a seat according to an embodiment; [Diagram 2] FIG. 4 is a cross-sectional view of the seat cushion as viewed from the left. [Diagram 3] FIG. 2 is a cross-sectional view of the seat cushion as viewed from the front. [Figure 4] 2 is a perspective view of a pad main body, a first cover member, and a second cover member for a driver's seat. FIG. [Diagram 5] FIG. 4 is a plan view of the front portion of the pad main body and the first cover member. [Figure 6] FIG. 2 is a plan view of the front portion of the pad main body, the first cover member, and the second cover member. [Figure 7] 2 is a perspective view of a passenger seat pad main body, a first cover member, a second cover member, and a seating sensor. FIG. [Figure 8] 13A is a perspective view of a first cover member, a pad main body for a driver's seat, and a pad main body for a passenger's seat according to a modified example, and FIG. 13B is a plan view of the first cover member. [Figure 9] 13A is a perspective view of a first cover member according to another modified example, and FIG. 13B is an enlarged cross-sectional view of the vicinity of a second groove portion of a seat cushion as viewed from the front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In this specification, the terms "front, back, left, right, top, bottom" and "top" refer to the front, back, left, right, top, bottom as seen by a person sitting in the seat (a seated occupant). As shown in FIG. 1, the seat of this embodiment is configured as a vehicle seat S to be installed in an automobile, and includes a seat cushion S1, a seat back S2, and a headrest S3.

[0036] As shown in FIG. 2, the seat cushion S1 includes a seat cushion frame 10 that forms the skeleton of the seat cushion S1, a seat cushion pad 20 that serves as a seat pad, and a cover material 30, and is constructed by covering the seat cushion frame 10 with the seat cushion pad 20 and the cover material 30.

[0037] The seat cushion pad 20 has an air passage 21. The air passage 21 includes a first air passage 21A, a second air passage 21B, and a plurality of third air passages 21C. The first air passage 21A extends downward (the side opposite to the seated person side) from the second air passage 21B and is provided so as to communicate the second air passage 21B with the space below the seat cushion pad 20. The third air passage 21C extends upward (the seated person side) from the second air passage 21B and is provided so as to communicate the second air passage 21B with the space above the seat cushion pad 20.

[0038] The vehicle seat S further includes a blower 40 and a duct 50, and is configured such that air blown from the blower 40 passes through the duct 50 and the air passage 21 and is blown out from the upper surface of the seat cushion pad 20 toward the seated occupant, as shown by the arrows in Fig. 2. The cover material 30 may be made of a breathable material, or may have a hole formed in a position corresponding to the third air passage 21C for passing air.

[0039] The seat cushion frame 10 includes left and right side frames (not shown) spaced apart from each other on the left and right, and a pan frame 12 connecting the left and right side frames. The pan frame 12 is a plate-shaped frame formed by processing a metal plate, and is disposed in front of the seat cushion S1.

[0040] The blower 40 is, for example, a sirocco fan, and includes a housing 41, an impeller 42, and a motor (not shown) for rotating the impeller 42. The housing 41 includes a housing body 44 in which the impeller 42 and the motor are housed, and a cylindrical blower section 45 extending rearward from the housing body 44. An intake port 40A for sucking in air is formed on the upper surface of the housing body 44, and an outlet port 40B for blowing out air is formed at the rear end of the blower section 45. The blower 40 is attached to the pan frame 12 via a bracket 60. The blower 40 is also connected to an air passage 21 formed in the seat cushion pad 20 via a duct 50 or the like.

[0041] The duct 50 is a tubular member, and has a first pipe section 51 extending forward and backward, and a second pipe section 52 bending from the rear end of the first pipe section 51 and extending upward. The second pipe section 52 has a flexible and expandable bellows section 53. The front end of the first pipe section 51 of the duct 50 is connected to the blowing section 45 of the blower 40, and the upper end of the second pipe section 52 is connected to the seat cushion pad 20 via a tubular connecting member 70.

[0042] As shown in FIG. 3, the seat cushion pad 20 has a central portion 20C and left and right side portions 20L, 20R provided on both the left and right sides of the central portion 20C and projecting upward from the central portion 20C. The seat cushion pad 20 also has a pair of left and right hanging grooves 27 extending forward and backward for hanging the upholstery material 30 at the boundary between the central portion 20C and the left and right side portions 20L, 20R. As an example, a hanging wire 28 for hanging the upholstery material 30 in the hanging groove 27 is embedded in the seat cushion pad 20 by insert molding. The hanging wire 28 is partially exposed from a plurality of holes formed in the bottom of the hanging groove 27. The upholstery material 30 is fixed to the seat cushion pad 20 by engaging a hook member 31 with the exposed portion of the hanging wire 28.

[0043] 4, the seat cushion pad 20 is configured to include a pad main body 100 and a cover member 200 arranged to overlap the upper surface (the surface facing the seated person) of the pad main body 100. The pad main body 100 and the cover member 200 can be made of, for example, urethane foam. The pad main body 100 and the cover member 200 may be made of the same material or different materials.

[0044] The pad main body 100 has a main body central portion 110 which constitutes the central portion 20C (see FIG. 3) together with the cover member 200, and side portions 20L, 20R are integrally formed on both the left and right sides of the main body central portion 110. The main body central portion 110 has a first main body portion 111, a second main body portion 112 on the rear side of the first main body portion 111, and a third main body portion 113 on the front side of the first main body portion 111.

[0045] The upper surface of the first main body 111 is lower than the bottom of the second main body 112 and the hanging groove 27. As a result, a cover mounting recess 120 is formed in the front part of the left-right center of the upper surface of the pad main body 100, which is recessed toward the side parts 20L, 20R and the second main body 112 and has an open front side. A cover member 200 is disposed in the cover mounting recess 120. The first main body 111 is also provided with a first ventilation hole 131 penetrating vertically. The first ventilation hole 131 is a hole that forms the first ventilation path 21A, and is provided in the rear part of the first main body 111. In detail, as shown in FIG. 5, the first ventilation hole 131 is provided at a position shifted to the right of the center C in the left-right direction of the seat cushion pad 20.

[0046] The first engagement protrusions 140 are provided substantially symmetrically on the left and right inner surfaces 121, 121 of the cover mounting recess 120 formed in the pad main body 100. The first engagement protrusions 140 are protrusions that protrude inward in the left-right direction when viewed from above, and include a first protrusion 141 and a second protrusion 142. The first protrusion 141 and the second protrusion 142 are provided side by side with a gap in a predetermined direction, specifically, in the front-rear direction. More specifically, the first protrusion 141 is provided in the front part of the inner surface 121, and the second protrusion 142 is provided in the rear part of the inner surface 121. The first protrusion 141 is substantially trapezoidal when viewed from above, and the second protrusion 142 is substantially semicircular when viewed from above. The lower ends of the protrusions 141, 142 are both connected to the first main body portion 111. That is, the protrusions 141, 142 are provided so as to protrude inwardly to the left and right from the corners formed by the inner side surface 121 of the cover attachment recess 120 and the bottom surface (the upper surface of the first main body portion 111).

[0047] As shown in FIG. 4, the third body portion 113 is provided so as to protrude from the front end of the first body portion 111 toward the front side. The upper surface of the third body portion 113 is lower than the upper surface of the first body portion 111, and a step is formed between the upper surface of the third body portion 113 and the upper surface of the first body portion 111. In addition, the pad body 100 is provided with a second engagement protrusion 151 on the third body portion 113, which is its front end portion. The second engagement protrusion 151 is a protrusion protruding upward from the left-right center of the upper surface of the third body portion 113, and is formed in a substantially trapezoidal shape in which the left-right interval becomes narrower as it goes upward when viewed from the front side. The rear end of the second engagement protrusion 151 is connected to the first body portion 111. In other words, the second engagement protrusion 151 is provided so as to protrude from a corner formed by the upper surface of the third body portion 113 and the front surface of the first body portion 111.

[0048] The cover member 200 is a member that is arranged overlapping the upper surface of the pad body 100 to form an air passage 21 (second air passage 21B) between the cover member 200 and the pad body 100. The cover member 200 includes a first cover member 210 arranged overlapping the upper surface of the pad body 100, and a second cover member 220 arranged overlapping the upper surface (surface on the seated person side) of the first cover member 210. The first cover member 210 and the second cover member 220 may be formed from the same material or different materials.

[0049] The first cover member 210 is a plate-shaped member and is provided with an air vent groove 230 penetrating vertically. The air vent groove 230 is a groove forming the second air passage 21B, and includes a first groove portion 231, a second groove portion 232, and a third groove portion 233. As shown in FIG. 5, the first groove portion 231 is formed in a substantially U-shape when viewed from above, and the second groove portion 232 extends rearward from the rear end of the center of the left and right of the first groove portion 231 at the center C of the seat cushion pad 20. The third groove portion 233 extends rightward from the rear end of the second groove portion 232, and is provided so as to overlap the first air vent 131 formed in the pad main body 100 when viewed from above.

[0050] In addition, first engagement recesses 240 are provided on the left and right side surfaces 211, 211 of the first cover member 210, approximately symmetrically. The first engagement recesses 240 are recesses into which the first engagement protrusions 140 formed on the pad body 100 fit. In detail, the first engagement recesses 240 are recesses that are recessed toward the left and right inward direction when viewed from above, and include a first recess 241 and a second recess 242. The first recess 241 is a recess into which the first protrusions 141 of the first engagement protrusions 140 fit, and is provided in the front part of the side surface 211. The second recess 242 is a recess into which the second protrusions 142 of the first engagement protrusions 140 fit, and is provided in the rear part of the side surface 211. The first recess 241 into which the first protrusions 141 fit is approximately trapezoidal when viewed from above, and the second recess 242 into which the second protrusions 142 fit is approximately semicircular when viewed from above. Therefore, the first recess 241 and the second recess 242 have different shapes.

[0051] The first engagement protrusion 140 and the first engagement recess 240 are provided on the inside in the left-right direction of the side portions 20L, 20R in a state in which the first cover member 210 is placed on top of the upper surface of the pad body 100. The first engagement protrusion 140 and the first engagement recess 240 are also provided on the inside in the left-right direction of the hanging groove 27.

[0052] The underside (the side opposite to the seated person side) of the first cover member 210 is fixed to the upper surface of the pad main body 100. More specifically, the underside of the first cover member 210 is fixed to the bottom surface of the cover attachment recess 120 with an adhesive 300 shown hatched. Meanwhile, in this embodiment, the left and right and front and rear side surfaces of the first cover member 210 are not fixed to the pad main body 100 or the like. In other words, no adhesive is applied to the left and right and front and rear side surfaces of the first cover member 210.

[0053] In this embodiment, the thickness of the first cover member 210 in the direction in which the pad body 100 and the cover member 200 overlap is approximately equal to the amount of protrusion (height) of the first engagement protrusion 140 from the bottom surface of the cover attachment recess 120. That is, in this embodiment, the vertical length of the first engagement recess 240 is approximately equal to the height of the first engagement protrusion 140. Furthermore, in this embodiment, the upper surface of the first engagement protrusion 140 and the upper surface of the first cover member 210 are configured to be approximately flush with each other when the first engagement recess 240 and the first engagement protrusion 140 are engaged with each other.

[0054] 4, the second cover member 220 is a plate-shaped member and has a first portion 221 and a second portion 222 that bends and extends downward from a front end of the first portion 221. In this embodiment, the first cover member 210 and the second cover member 220 have approximately the same size on the left and right. A plurality of second ventilation holes 260 penetrating vertically are provided in the first portion 221. The second ventilation holes 260 are holes that form the third ventilation passages 21C, and are provided at positions overlapping with the first groove portions 231 of the ventilation grooves 230 formed in the first cover member 210 when viewed from above (see FIG. 6).

[0055] Further, the second portion 222 is provided at its lower end with a second engagement recess 251. The second engagement recess 251 is a recess into which the second engagement protrusion 151 formed on the pad body 100 fits. In detail, the second engagement recess 251 is a recess recessed upward from the left-right center of the lower surface of the second portion 222, and is formed in a substantially trapezoidal shape when viewed from the front side.

[0056] As shown in FIG. 6, the lower surface (the surface opposite to the seated person side) of the second cover member 220 is fixed to both the upper surface of the first cover member 210 and the upper surface of the pad main body 100. In detail, most of the lower surface of the second cover member 220 is fixed to the upper surface of the first cover member 210 by an adhesive 300 shown by hatching. In addition, the lower surface of the second cover member 220, a portion located above the first engagement protrusion 140 formed on the pad main body 100, is fixed to the upper surface of the first engagement protrusion 140 by the adhesive 300. As a result, the second cover member 220 is fixed to both the first cover member 210 and the pad main body 100. On the other hand, in this embodiment, the left and right and rear side surfaces of the second cover member 220 are not fixed to the pad main body 100. In other words, no adhesive is applied to the left and right and rear side surfaces of the second cover member 220. In addition, the lower surface of the front end portion (second portion 222) of the second cover member 220 and the upper surface of the front end portion (third main body portion 113) of the pad main body 100 may or may not be fixed to each other.

[0057] When assembling the seat cushion pad 20 configured in this manner, as shown in FIG. 4, first, an adhesive is applied to the upper surface of the pad main body 100, specifically, the bottom surface of the cover mounting recess 120. Then, while engaging the first engagement recess 240 with the first engagement protrusion 140, the first cover member 210 is placed in the cover mounting recess 120, and the lower surface of the first cover member 210 is fixed to the upper surface of the pad main body 100 with the adhesive. Next, an adhesive is applied to the upper surface of the first cover member 210 and the upper surface of the first engagement protrusion 140 formed on the pad main body 100. Then, the second cover member 220 is placed so as to overlap the first cover member 210, and the lower surface of the second cover member 220 is fixed to the first cover member 210 and the upper surface of the first engagement protrusion 140 with the adhesive. In this way, the seat cushion pad 20 can be assembled.

[0058] The assembly of the seat cushion pad 20 is not limited to the above-mentioned method. For example, the seat cushion pad 20 may be assembled by first fixing the first cover member 210 and the second cover member 220 with an adhesive or the like to form the cover member 200, and then fixing the formed cover member 200 to the pad main body 100 with an adhesive or the like.

[0059] The vehicle seat S used in the driver's seat has been described above. Next, the configuration of the vehicle seat S used in the passenger seat, specifically, the configuration of the pad main body 100 and the cover member 200 will be described. Note that, in the following, the same components as those described above will be denoted by the same reference numerals and the description will be omitted as appropriate, and differences from the previously described configuration will be described in detail.

[0060] As shown in FIG. 7, the passenger seat pad main body 100 is provided with a first ventilation hole 132 penetrating vertically at the rear of the first main body portion 111. The first ventilation hole 132 is a hole forming the first ventilation passage 21A, and is provided at a position shifted leftward from the center C of the seat cushion pad 20, opposite to the first ventilation hole 131 (see FIG. 4) of the driver's seat pad main body 100. In addition, the passenger seat first cover member 210 is provided with a ventilation groove 230. This ventilation groove 230 includes a first groove portion 231, a second groove portion 232, and a fourth groove portion 234. The fourth groove portion 234 extends leftward from the rear end of the second groove portion 232, and is provided so as to overlap the first ventilation hole 132 of the pad main body 100 when viewed from above (see also FIG. 8(b)).

[0061] The passenger seat S for the vehicle is provided with a seating sensor 400 between the seat cushion pad 20 and a cover material (not shown) for detecting that an occupant is seated in the vehicle seat S. The seating sensor 400 includes a first seating sensor 410 arranged on the front side and a second seating sensor 420 arranged on the rear side.

[0062] The upper surface of the second cover member 220 is provided with a first sensor placement portion 270 having a recessed shape for placing the first seating sensor 410. The seat cushion pad 20 is also provided with a first harness insertion hole 29 for passing the wire harness 411 connected to the first seating sensor 410 and drawing it out to the lower side of the seat cushion pad 20. The first harness insertion hole 29 is formed by a first insertion hole 29A provided at the rear of the first main body portion 111 of the pad main body 100, a second insertion hole 29B provided at the rear of the first cover member 210, and a third insertion hole 29C provided at the rear of the first part 221 of the second cover member 220. The insertion holes 29A to 29C are holes that penetrate vertically and are provided so as to overlap each other when viewed from above. In detail, the insertion holes 29A to 29C (first harness insertion hole 29) are provided at positions shifted to the right from the center C of the seat cushion pad 20. More specifically, the first insertion hole 29A is provided so as to be aligned with the first air hole 132 on the left and right, and the second insertion hole 29B is provided so as to be aligned with the fourth groove portion 234 on the left and right.

[0063] The second main body portion 112 of the pad main body 100 is provided with a concave second sensor arrangement portion 170 for arranging the second seating sensor 420 on the upper surface, and a second harness insertion hole 190 penetrating vertically is provided on the rear side of the second sensor arrangement portion 170. The second harness insertion hole 190 is a hole for passing a wire harness 421 connected to the second seating sensor 420 and drawing it out to the underside of the seat cushion pad 20.

[0064] The third main body 113 of the pad main body 100 is provided with a second engagement protrusion 152. The second engagement protrusion 152 is a protrusion protruding upward from the left-right center of the upper surface of the third main body 113, and is formed in a substantially trapezoidal shape in which the left-right interval narrows toward the top as viewed from the front side, similar to the second engagement protrusion 151 (see FIG. 4) of the pad main body 100 for the driver's seat. On the other hand, the size (left-right length) of the second engagement protrusion 152 is smaller than that of the second engagement protrusion 151. For this reason, the size of the second engagement protrusion 151 provided on the pad main body 100 for the driver's seat shown in FIG. 4 and the size of the second engagement protrusion 152 provided on the pad main body 100 for the passenger's seat shown in FIG. 7 differ depending on the specifications of the vehicle seat S, specifically, the location where the vehicle seat S is arranged in the vehicle.

[0065] Further, the second portion 222 of the second cover member 220 is provided at its lower end with a second engagement recess 252 into which the second engagement protrusion 152 fits. The second engagement recess 252 is formed in a substantially trapezoidal shape as viewed from the front side, similar to the second engagement recess 251 (see FIG. 4) of the pad main body 100 for the driver's seat. On the other hand, the size (left-right length) of the second engagement recess 252 is smaller than that of the second engagement recess 251 so that the second engagement protrusion 152 fits therein. For this reason, the sizes of the second engagement recess 251 and the second engagement recess 252 also differ depending on the specifications of the vehicle seat S.

[0066] According to the present embodiment described above, the first cover member 210 is fixed to the pad main body 100, and the second cover member 220 is fixed to both the first cover member 210 and the pad main body 100. Therefore, the pad main body 100, the first cover member 210, and the second cover member 220 are fixed to each other, so that the seat cushion pad 20 consisting of a plurality of parts can be firmly integrated. Specifically, the second cover member 220 is fixed to both the first cover member 210 and the pad main body 100, so that the unity of the seat cushion pad 20 is increased. In addition, the first cover member 210 is fixed to both the pad main body 100 and the second cover member 220, so that the unity of the seat cushion pad 20 is also increased. Furthermore, the pad main body 100 is fixed to both the first cover member 210 and the second cover member 220, so that the unity of the seat cushion pad 20 is also increased.

[0067] In addition, since the lower surface of the first cover member 210 is fixed to the upper surface of the pad main body 100, and the lower surface of the second cover member 220 is fixed to both the upper surface of the first cover member 210 and the upper surface of the pad main body 100, the upper and lower surfaces to which force is applied when a seated person sits on the vehicle seat S are fixed to each other, so that the seat cushion pad 20 consisting of multiple parts can be integrated more firmly. In addition, since the second cover member 220 rests on both the upper surface of the first cover member 210 and the upper surface of the pad main body 100, the second cover member 220 can be supported by the pad main body 100. This makes it possible to prevent the first cover member 210 from being crushed more than necessary, for example, narrowing the air passage 21 (the second air passage 21B).

[0068] In addition, since a first engagement protrusion 140 is provided on the pad body 100 and a first engagement recess 240 is provided on the first cover member 210, when placing the cover member 200 on the pad body 100, the positions of the pad body 100 and the cover member 200 can be easily determined by engaging the first engagement protrusion 140 with the first engagement recess 240.

[0069] In addition, by fixing the lower surface of the second cover member 220 to the upper surface of the first engaging protrusion 140 provided on the pad main body 100, the boundary between the first engaging protrusion 140 and the first engaging recess 240, which is a gap in the seat cushion pad 20 made up of multiple parts, can be covered by the second cover member 220. This makes it difficult for a seat occupant sitting in the vehicle seat S to feel the gap formed by the boundary between the first engaging protrusion 140 and the first engaging recess 240, thereby improving the seating feeling of the vehicle seat S.

[0070] In addition, since the first engagement convex portion 140 is multiple and includes a first convex portion 141 and a second convex portion 142, and the first engagement recess 240 is multiple and includes a first recess 241 and a second recess 242, by engaging these, the positions of the pad main body 100 and the cover member 200 can be determined with high precision.

[0071] Furthermore, since the first convex portion 141 and the second convex portion 142, and the first concave portion 241 and the second concave portion 242 have different shapes, for example, if the front-to-back orientation or front-to-back (top-to-bottom) of the first cover member 210 is incorrect when placing the first cover member 210 on the pad main body 100, the first engagement convex portion 140 and the first engagement concave portion 240 will not engage correctly, thereby preventing incorrect assembly of the pad main body 100 and the cover member 200.

[0072] Furthermore, since the first engagement protrusion 140 and the first engagement recess 240 are provided on the left and right inner sides of the side portions 20L, 20R, the first engagement protrusion 140 and the first engagement recess 240 are provided in the central portion 20C which is flatter than the side portions 20L, 20R, the seat cushion pad 20 can be configured simply compared to a configuration in which, for example, the first engagement protrusion and the first engagement recess are provided on an inclined surface of the side portions 20L, 20R.

[0073] In addition, since the pad body 100 is provided with the second engagement protrusions 151, 152 and the second cover member 220 is provided with the second engagement recesses 251, 252, when the cover member 200 is placed on the pad body 100, the positions of the pad body 100 and the cover member 200 can be easily determined by engaging the second engagement protrusions 151, 152 with the second engagement recesses 251, 252. In addition, in this embodiment, since the pad body 100 is provided with the first engagement protrusion 140 and the first cover member 210 is provided with the first engagement recess 240, the second engagement protrusions 151, 152 and the second engagement recesses 251, 252 are further provided, so that the positions of the pad body 100 and the cover member 200 can be determined with even greater accuracy.

[0074] In addition, since the second engagement protrusions 151, 152 and the second engagement recesses 251, 252 are different in size between the vehicle seat S for the driver's seat and the vehicle seat S for the passenger seat, for example, when attempting to place the second cover member 220 for the passenger seat on the pad main body 100 for the driver's seat, the second engagement protrusion 151 and the second engagement recess 252 will not engage properly, thereby preventing incorrect assembly of the pad main body 100 and cover member 200 which have different specifications.

[0075] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. The specific configuration can be appropriately changed as described below without departing from the spirit of the invention.

[0076] For example, in the embodiment, the first cover member 210 for the driver's seat shown in FIG. 4 and the first cover member 210 for the passenger's seat shown in FIG. 7 are provided as separate parts, but this is not limited thereto. As shown in FIGS. 8(a) and (b), the first cover member 210 may be provided as a common part for the driver's seat and the passenger's seat. The common first cover member 210 is provided with an air groove 230. The air groove 230 includes a first groove portion 231, a second groove portion 232, a third groove portion 233, and a fourth groove portion 234, and the groove portions 232 to 234 form a T-shaped groove when viewed from above. When the common first cover member 210 is disposed on the passenger seat pad main body 100B for use, a seal member 500 made of the same material as the first cover member 210 is fitted into at least a portion of the third groove portion 233 to close the third groove portion 233 so that air does not leak from the first insertion hole 29A through the third groove portion 233. At this time, the positions of the third groove portion 233 corresponding to the first insertion hole 29A and the third insertion hole 29C (see FIG. 7) are not closed. In this way, a hole for passing the wire harness 411 can be formed by a portion of the third groove portion 233 penetrating vertically, the first insertion hole 29A, and the third insertion hole 29C. In addition, when the common first cover member 210 is placed on the pad main body 100A for the driver's seat and used, the fourth groove portion 234 may be blocked with a sealing member to prevent air from flowing into the fourth groove portion 234.

[0077] Also, as shown in FIG. 9, the first cover member 210 may be provided with a plurality of grooves 280 around the ventilation groove 230 (air passage 21). In the embodiment of FIG. 9, the grooves 280 are provided, as an example, on the upper surface of the first cover member 210 around the second groove portion 232 that forms the ventilation groove 230. In detail, the grooves 280 are bottomed grooves (recesses) that extend in the front-rear direction, and two grooves are provided side by side on each of the left and right sides of the second groove portion 232. The grooves 280 may have a width (left-right length) of 15 mm and a depth of 5 mm, for example. By providing such grooves 280 on the upper surface of the first cover member 210, the occupant sitting in the vehicle seat S is less likely to feel the step formed by the ventilation groove 230, so that the seating feeling of the vehicle seat S can be improved. The number of grooves on one of the left and right sides of the second groove portion is not limited to two, and may be one, or three or more. Furthermore, the number of grooves on the right side of the second groove portion may be different from the number of grooves on the left side.

[0078] In the embodiment, the first recess 241 and the second recess 242 constituting the first engagement recess 240 have different shapes, but this is not limited to this. For example, the first recess and the second recess may have the same shape.

[0079] In the above embodiment, the first engaging protrusion 140 is provided on the pad body 100, and the first engaging recess 240 is provided on the first cover member 210, but this is not limited thereto. For example, the first engaging protrusion may be provided on the first cover member, and the first engaging recess may be provided on the pad body. In the above embodiment, the second engaging protrusion 151 is provided on the pad body 100, and the second engaging recess 251 is provided on the second cover member 220, but this is not limited thereto. For example, the second engaging protrusion may be provided on the second cover member, and the second engaging recess may be provided on the pad body. The number of engaging protrusions and engaging recesses is arbitrary.

[0080] In the above embodiment, the first engaging protrusion (only the protrusion) is provided on one of the pad main body and the first cover member, and the first engaging recess (only the recess) into which the first engaging protrusion fits is provided on the other, but this is not limited to the above. For example, the pad main body and the first cover member may be provided with both a protrusion and a recess, and the other may be provided with both a recess into which the protrusion fits on one side, and a protrusion into which the recess fits on the other side. The number of protrusions and recesses is optional. The seat pad may be configured without the first engaging protrusion and the first engaging recess.

[0081] In the above embodiment, the sizes of the second engagement protrusions 151, 152 and the second engagement recesses 251, 252 are different between the driver's seat and the passenger's seat according to the specifications of the vehicle seat S, but this is not limited thereto. For example, the second engagement protrusions and the second engagement recesses may be different in shape, arrangement position, or number according to the specifications of the vehicle seat. Also, two or more of the shape, size, arrangement position, and number may be different. Also, in the above embodiment, the second engagement protrusions and the second engagement recesses are provided on both the driver's seat and the passenger's seat, but this is not limited thereto. For example, the second engagement protrusions and the second engagement recesses may be provided only on one of the driver's seat and the passenger's seat, and the second engagement protrusions and the second engagement recesses may not be provided on the other of the driver's seat and the passenger's seat. This also makes it possible to suppress misassembly of the pad main body and the cover member having different specifications. Also, the seat pad may be configured not to have the second engagement protrusions and the second engagement recesses.

[0082] In the above embodiment, the lower surface of the second cover member 220 is fixed to the upper surface of the first engaging protrusion 140 formed on the pad body 100, but this is not limited thereto. For example, the pad body may be provided with the first engaging recess, and the first cover member may be provided with the first engaging protrusion, and the lower surface of the second cover member may be fixed to the upper surface of the portion of the pad body that forms the first engaging recess. In the above embodiment, the lower surface of the second cover member 220 is fixed to both the upper surface of the first cover member 210 and the upper surface of the pad body 100, but this is not limited thereto. For example, the second cover member may have its lower surface fixed to the first cover member, and its side surface connecting the lower surface and the upper surface fixed to the pad body. In addition, both the lower surface and the side surface of the second cover member may be fixed to the pad body. Also, in the above embodiment, only the underside of the first cover member 210 is fixed to the pad body 100, but this is not limited to this, and for example, only the side surface may be fixed to the pad body, or both the underside and the side surface may be fixed to the pad body.

[0083] In the above embodiment, the pad body 100, the first cover member 210 and the second cover member 220 are fixed by the adhesive 300 (adhesion), but this is not limiting and they may be fixed by, for example, welding. Also, for example, the first cover member and the second cover member may be fixed by welding, and the cover members (the first cover member and the second cover member) and the pad body may be fixed by adhesion.

[0084] In the above embodiment, a sirocco fan is exemplified as the blower 40, but the present invention is not limited thereto and may be, for example, a propeller fan or a turbo fan. In the above embodiment, the vehicle seat S is configured to blow out air by the operation of the blower 40, but the present invention is not limited thereto and may be, for example, a configuration to suck in air by the operation of the blower. In addition, the blower may be capable of switching between blowing and suction by, for example, switching the rotation direction of the blades.

[0085] In the above embodiment, the seat pad is the seat cushion pad 20, that is, the pad material of the seat cushion S1, but is not limited thereto. For example, the seat pad may be the pad material of the seat back. In this case, the first cover member is disposed overlapping the front surface (surface facing the seat occupant) of the pad main body, and the second cover member is disposed overlapping the front surface (surface facing the seat occupant) of the first cover member.

[0086] In addition, in the above embodiment, the vehicle seat S mounted on an automobile is exemplified as the seat, but the seat is not limited thereto and may be a vehicle seat mounted on a vehicle other than an automobile, for example, a railroad car, a ship, an airplane, etc. Furthermore, the seat is not limited to a vehicle seat and may be, for example, a seat used in a home or the like.

[0087] Furthermore, the elements described in the above-described embodiment and modified examples may be implemented in any combination. [Explanation of symbols]

[0088] 20 Seat cushion pad 20C central part 20L, 20R Side 21 Ventilation passage 27 Hanging groove 30 Skin material 40 Blower 100 Pad body 113 Third Body 140 First engagement convex part 141 First protrusion 142 Second convex part 151,152 Second engagement convex part 200 Cover member 210 First cover member 220 Second cover member 240 First engagement recess 241 First recess 242 Second recess 251, 252 Second engagement recess S Vehicle seat S1 Seat Cushion

Claims

1. A seat pad having an air passage and a blower connected to the air passage, The seat pad includes a pad main body and a cover member disposed on the pad main body. The seat pad has left and right hanging grooves for hanging a cover material, The cover member has a plurality of recesses on each of the left and right side surfaces, The sheet, characterized in that the plurality of recesses are provided along the hanging groove.

2. A seat as described in Claim 1, characterized in that the recess, when viewed from the seated occupant's side, is positioned perpendicular to the left-right direction so as to overlap with the air passage.

3. A sheet as described in claim 1 or claim 2, characterized in that the multiple recesses include a first recess and a second recess aligned along the hanging groove.

4. The pad body has an air hole passing through from the seated person side to the opposite side to the seated person side, The seat according to claim 3, wherein the second recess is positioned so as to overlap with the air hole in a direction perpendicular to the left-right direction when viewed from the seated occupant's side.

5. A seat as described in any one of claims 3 or 4, characterized in that the first recess, when viewed from the seated occupant's side, has a position in a perpendicular direction perpendicular to the left-right direction that coincides with the center of the cover member in the perpendicular direction.

6. A sheet described in any one of claims 1 to 5, characterized in that the rear end of the cover member has a shape that is concave toward the front.

7. The first recess and the second recess are provided symmetrically on the left and right sides of the cover member, 6. The seat according to claim 3, wherein a distance between the left and right first recesses is greater than a distance between the left and right second recesses.

8. A seat described in any one of claims 1 to 7, characterized in that the recess is positioned in a direction from the occupant side toward the opposite side to the occupant side so as to overlap with the hanging groove.

9. The pad body has an air hole passing through from the seated person side to the opposite side to the seated person side, 9. The seat according to claim 1, wherein a recessed amount of the recess, as viewed from a seated occupant's side, is smaller than a length of the air hole in the left-right direction.

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