Air conditioning duct unit for seats

Abstract

To provide an air-conditioning channel unit for seat that can assemble a connection member so as not to positionally deviate with respect to a channel cover.SOLUTION: An air-conditioning channel unit 3 has: a planar channel cover 4 which is covered on a reverse surface 22 of a back pad 2 and covers a recessed ventilation channel 23 formed in the reverse surface 22; a blower case 6 which is connected to a connection port 44 formed in the channel cover 4 from a seat reverse side; and a support member 5 comprising a contact part 51 which is brought into contact with the channel cover 4 from a seat front side, and an attachment part 52 which can integrally attach the blower case 6. The contact part 51 pushes and sandwiches the channel cover 4 between itself and the blower case 6.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an air-conditioning flow path unit for a seat. More specifically, the present invention relates to an air-conditioning flow path unit for a seat, which includes a planar flow path cover that covers a concave ventilation flow path formed on the back surface of a seat pad, a connection member connected to the flow path cover from the back side of the seat, and a support member that supports the connection member so as to sandwich the flow path cover between the connection member and the support member.

Background Art

[0002] Patent Document 1 discloses an air-conditioning flow path unit for a seat, which includes a flow path cover that covers a concave ventilation flow path formed on the back surface of a cushion pad and is placed on the back surface of the pad, and a blower (connection member) that is connected to a connection port of the flow path cover and allows air to flow through the ventilation flow path. By sucking air in the ventilation flow path by the blower and exhausting it to the lower part of the cushion pad, the inside of the pad can be efficiently ventilated.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The above blower is generally assembled and supported on a seat frame. Therefore, the blower is not mechanically joined to the connection port of the flow path cover and is simply provided so that the arrangements overlap. Therefore, there is a concern that the arrangement relationship between the blower and the connection port may be displaced due to displacement of the frame caused by the seating load, etc., resulting in a decrease in the intake and exhaust performance of the blower. Therefore, an air-conditioning flow path unit for a seat is provided in which the connection member is appropriately assembled so that displacement hardly occurs with respect to the flow path cover.

Means for Solving the Problems

[0005] To solve the above problems, the air conditioning flow channel unit for seats of the present invention employs the following means.

[0006] In other words, the seat air conditioning channel unit of the present invention comprises a surface channel cover that is placed over the back surface of the seat pad to cover a concave ventilation channel formed on the back surface of the pad, a connecting member that is connected from the back side of the seat to a connection port formed in the channel cover, a support member that has a contact portion that comes into contact with the channel cover from the front side of the seat, and a mounting portion to which the connecting member can be integrally attached. The contact portion presses the channel cover between itself and the connecting member. In this way, by attaching the connecting member to the support member and pressing the connection port between itself and the contact portion, the connecting member can be assembled in a state where it is properly aligned with respect to the connection port.

[0007] Furthermore, the air conditioning flow channel unit for seats according to the present invention may be configured as follows: The contact portion is applied in an annular manner along the periphery of the connection port. This causes the contact portion to press and clamp the periphery of the connection port in an annular manner between itself and the connecting member. As a result, gaps around the connection port are less likely to occur, thereby improving sealing performance.

[0008] Furthermore, the air conditioning channel unit for sheets of the present invention may be configured as follows: The channel cover has a frustoconical recess that is recessed towards the back of the sheet around the connection port. The contact portion makes surface contact with the inclined inner surface of the recess. As a result, by providing the contact portion in the recess of the channel cover, a wide space for the ventilation channel can be secured. In addition, by making surface contact with the inner surface of the recess, it is possible to prevent gaps from forming between the contact portion and the channel cover. These measures help to suppress a decrease in the ventilation performance of the ventilation channel.

[0009] Furthermore, the air conditioning flow path unit for seats according to the present invention may be configured as follows: The mounting portion is a protruding portion that passes through a through hole formed at a location away from the connection port of the flow path cover so as to protrude to the back side of the seat. Multiple protruding portions are provided in the circumferential direction of the contact portion, and each has a fitting claw portion at its tip that snap-fits into the fitting hole of the connecting member. This allows the connecting member to be attached to the support member in a simple configuration by inserting the fitting claw portion of the protruding portion into the fitting hole of the connecting member.

[0010] Furthermore, the air conditioning flow channel unit for seats of the present invention may be configured as follows: The protruding portion has a tapered portion whose width diameter along the circumferential direction of the contact portion tapers from the base end to the tip of the protruding portion. The connecting member has a clamping portion that clamps the tapered portion in the circumferential direction when the protruding portion is inserted into the connecting member. As a result, the clamping portion clamps the tapered portion in the circumferential direction, making it easy to position the connecting member in the circumferential direction with respect to the support member.

[0011] Furthermore, the air conditioning flow channel unit for seats according to the present invention may be configured as follows: The protruding portion has a rib that extends radially inward from the contact portion. The rib is inserted into a notch in the flow channel cover so as to position the support member circumferentially and radially with respect to the flow channel cover. This makes it possible to easily position the support member with respect to the flow channel cover.

[0012] Furthermore, the air conditioning flow path unit for seats according to the present invention may be configured as follows: The fitting claw portion protrudes radially outward from the contact portion. This makes it less likely for the fitting claw portion to interfere with the configuration around the connection port. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of a seat back to which the air conditioning flow channel unit according to the first embodiment is applied. [Figure 2] This is a disassembled perspective view of the seat back. [Figure 3] Figure 2 is an exploded perspective view taken from the front. [Figure 4] It is a rear view of the seat back. [Figure 5] It is a rear view of the seat back showing the state where the air conditioning duct unit is removed. [Figure 6] It is a perspective view of the air conditioning duct unit. [Figure 7] It is a perspective view of FIG. 6 seen from the front. [Figure 8] It is a perspective view of the air conditioning duct unit showing the state where the rear case is removed. [Figure 9] It is a perspective view of the air conditioning duct unit showing the state where the blower case is removed. [Figure 10] It is a rear view of the air conditioning duct unit showing the same state as FIG. 9. [Figure 11] It is a cross-sectional view taken along line XI-XI of FIG. 4. [Figure 12] It is an enlarged view of part XII of FIG. 11. [Figure 13] It is a cross-sectional view taken along line XIII-XIII of FIG. 4. [Figure 14] It is an enlarged view of part XIV of FIG. 13. [Figure 15] It is a cross-sectional view taken along line XV-XV of FIG. 10.

Mode for Carrying Out the Invention

[0014] Hereinafter, the mode for carrying out the present invention will be described with reference to FIGS. 1-15. In the following description, when indicating directions such as front, rear, up, down, left, and right, the respective directions shown in each figure shall be referred to.

[0015] <First Embodiment> First, the air conditioning duct unit for a seat (air conditioning duct unit 3) according to the first embodiment of the present invention will be described. As shown in FIG. 1, the air conditioning duct unit 3 is applied to the seat back 1 of an automobile seat. The seat back 1 has a back frame (not shown) forming a skeleton, a back pad 2 assembled to the back frame and forming a cushion material, and a back cover (not shown) covering the back pad 2. The air conditioning duct unit 3 is assembled to the back surface of the back pad 2.

[0016] As shown in FIG. 2, the air-conditioning duct unit 3 includes a planar duct cover 4 assembled to cover the back surface of the back pad 2, and a blower case 6 connected to the connection port 44 of the duct cover 4. The blower case 6 is configured to accommodate a blower (not shown) for performing seat air-conditioning therein. Further, the air-conditioning duct unit 3 has a support member 5 for integrally attaching the blower case 6 to the duct cover 4. The support member 5 is configured to be assembled to the duct cover 4 from the front side of the seat. The support member 5 has a protruding portion 52 that protrudes toward the back side of the seat. As shown in FIG. 9, the protruding portion 52 protrudes through the duct cover 4 toward the back side of the seat by assembling the support member 5 to the duct cover 4. As shown in FIG. 6, the blower case 6 is attached to the protruding portion 52. Thereby, the blower case 6 is integrally assembled to the duct cover 4. Here, the protruding portion 52 corresponds to the "attachment portion" of the present invention. Further, the blower case 6 corresponds to the "connection member" of the present invention.

[0017] As shown in FIGS. 2 and 5, the back pad 2 includes a pad body 20 that elastically supports the back of the seated person, and a concave ventilation duct 23 that extends along the back surface 22 of the pad body 20. The pad body 20 is made of a polyurethane foam molded body. The ventilation duct 23 opens toward the back side of the seat, and the opening thereof is configured to be closed by the duct cover 4. Further, the back pad 2 has a plurality of ventilation holes 24 that penetrate from various locations on the bottom surface 23a of the ventilation duct 23 to the pad surface 21 (see FIG. 3). Here, the back pad 2 corresponds to the "seat pad" of the present invention.

[0018] The back pad 2 is configured such that the seat air conditioning by the blower functions efficiently through the ventilation channel 23 and ventilation holes 24 described above. Specifically, the blower blows air toward the rear of the back pad 2, drawing air from the pad surface 21 side into each ventilation hole 24. The air drawn into each ventilation hole 24 flows through the ventilation channel 23 to the connection port 44 of the channel cover 4, and is exhausted to the rear of the back pad 2 by the blower. This efficiently releases the heat trapped in the pad body 20 to the outside along with the airflow, improving the comfort of the seat back 1. In this embodiment, the blower is configured to create an airflow from the pad surface 21 side toward the pad back surface 22 side as described above, but it may also be configured to draw in air from the pad back surface 22 side and blow air directly toward the occupant.

[0019] <Backpad 2> The following describes in detail each component of the seat back 1 as described above. As shown in Figure 5, the ventilation channel 23 of the back pad 2 is formed to branch out in six directions along the back surface 22 of the pad. The ventilation channel 23 has a bottom surface 23a at the end of its recess and a side surface 23b that rises up vertically from the periphery of the bottom surface 23a. Around the ventilation channel 23, a lid-aligning groove 23d is formed along the side surface 23b, forming a recessed step relative to the back surface 22 of the pad. A concave positioning portion 23e is formed in the lid-aligning groove 23d.

[0020] The ventilation channel 23 also has two expanded channel sections 23c, which are partially expanded so that one channel width is relatively larger than the other. The majority of the ventilation channel 23, including each expanded channel section 23c, is located in the upper region of the back surface 22 of the pad, above the center in the height direction. As shown in Figure 5, multiple ventilation holes 24 are provided in the channels extending downward from each expanded channel section 23c. This allows a large amount of air to flow into the ventilation channel 23 from each ventilation hole 24. The large amount of air that flows in flows vigorously into each expanded channel section 23c. Each expanded channel section 23c has an expanded channel width, which reduces the flow velocity of the incoming air. This reduction in flow velocity allows the blower to properly draw in the incoming air. With the above configuration, the ventilation channel 23 is configured so that the blower can draw in a sufficient amount of air and exhaust it efficiently.

[0021] A backing material (not shown) made of a planar material such as nonwoven fabric is integrally molded to the back surface 22 of the pad, including the inner circumferential surface of the ventilation channel 23. The backing material hardens integrally with the back surface 22 of the pad when the foaming material of the pad body 20 is impregnated into it during the molding of the pad body 20. This increases the rigidity of the back surface 22 of the pad.

[0022] <Flow channel lid 4> As shown in Figure 2-4, the flow channel cover 4 is a planar member formed to extend along the shape of the ventilation channel 23. The flow channel cover 4 has a cover portion 41 formed in the center in its in-plane direction and a pad contact portion 42 formed at its periphery. The cover portion 41 covers the flow channel space of the ventilation channel 23 from the back side of the sheet. The pad contact portion 42 abuts against the cover alignment groove 23d of the ventilation channel 23 so as to overlap it from the back side of the sheet. The pad contact portion 42 is bonded to the cover alignment groove 23d with adhesive. As a result, the flow channel cover 4 is joined to the back surface 22 of the pad in a state where its periphery is sealed without any gaps.

[0023] As shown in Figure 4, the cover portion 41 has an overhanging cover portion 41a formed in its upper region and a flush cover portion 41b formed in its lower region. The flush cover portion 41b is formed to extend substantially flush with the pad contact portion 42. The overhanging cover portion 41a is configured to cover most of the ventilation channel 23, including each expanded channel portion 23c. The overhanging cover portion 41a has a stepped shape that protrudes from the flush cover portion 41b and the pad contact portion 42 toward the rear of the seat. This stepped shape increases the rigidity of the cover portion 41 against bending and twisting. In addition, the thickness of the pad body 20 can be secured by the amount that the overhanging cover portion 41a protrudes toward the rear. This allows for a greater channel depth of the ventilation channel 23. Therefore, even if the ventilation channel 23 is compressed in the depth direction by a seating load from the front of the seat, the decrease in the ventilation performance of the ventilation channel 23 can be suppressed compared to the case where the channel cover 4 has a flat, flush shape.

[0024] As shown in Figures 10 and 15, the flow channel cover 4 has a recess 43 in its upper region that protrudes in a stepped manner further toward the rear of the sheet than the protruding cover portion 41a (see Figure 9). The recess 43 is shaped like a frustoconical protrusion toward the rear of the sheet. The recess 43 has a bottom surface 43a at the end of the recess and an inclined side surface 43b that extends inclined and widens from around the bottom surface 43a. The bottom surface 43a of the recess 43 has a relatively large circular opening in the center of the connection port 44, small circular openings 43d on the left and right above the connection port 44, and through holes 43c on the left and right sides of the connection port 44 that open in a roughly rectangular shape. The recess 43 also has notches 43e at its upper and lower ends that are cut out symmetrically from each other. The notch 43e has a trapezoidal portion 43f that is cut out in a trapezoidal shape, and a pointed portion 43g that is cut out in a tapered shape from the tip of the trapezoidal portion 43f.

[0025] <Support member 5> As shown in Figure 2-3, the support member 5 has a contact portion 51 formed in the shape of a ring plate. The contact portion 51 has a through hole 51a that penetrates through its center. As shown in Figures 10 and 15, the contact portion 51 has back pins 54 that protrude backward from two locations on the upper part of its rear surface. As shown in Figures 7 and 9, the contact portion 51 is assembled so as to fit into the recess 43 of the flow channel cover 4 from the front side of the sheet. With this assembly, each back pin 54 is inserted into the pin hole 43d of the recess 43. This restricts the support member 5 from rotating circumferentially relative to the flow channel cover 4. Also, as shown in Figure 10, the through holes 51a are positioned so that the positions of their openings overlap with those of the connection port 44 when viewed from the rear (directly from the surface). The opening diameter of the through holes 51a is formed to be slightly smaller than the opening diameter of the connection port 44. As shown in Figure 14, the contact portion 51 is pressed in an annular shape along the circumference of the connection port 44 when assembled into the recess 43. As shown in Figure 15, the peripheral edge of the contact portion 51 is cut diagonally along the inclined side surface 43b of the recess 43. This allows the peripheral edge of the contact portion 51 to make surface contact with the inclined side surface 43b of the recess 43. Furthermore, the peripheral edge is shaped to protrude so as to overlap the end of the inclined side surface 43b. This makes it difficult for a gap to form between the contact portion 51 and the recess 43.

[0026] As shown in Figure 7, the contact portion 51 is provided such that when assembled into the recess 43, its front surface becomes substantially flush with the front surface of the cover portion 41 without creating a step. The contact portion 51 has front pins 55 that protrude forward from two locations on the upper part of its front surface and from its lower end. Each front pin 55 is inserted into each positioning portion 23e (see Figure 5) of the back pad 2 when the air conditioning flow path unit 3 is assembled to the back pad 2. This allows the air conditioning flow path unit 3 to be properly positioned relative to the back pad 2. The contact portion 51 also has flow path ribs 53 that protrude forward in a ribbed manner from two locations on the left and right below the through hole 51a.

[0027] As shown in Figure 4, each channel rib 53 is shaped to extend radially in a diagonal downward-right or diagonal downward-left direction from the through-hole 51a. Each channel rib 53 is positioned to protrude into the channel of each expanded channel section 23c. Each channel rib 53 can increase the rigidity of the support member 5. In addition, each channel rib 53 can reduce the flow velocity by acting as an obstacle to the air flowing through each expanded channel section 23c. Each channel rib 53 is shaped to extend in a strip-like manner in the direction of the channel axis, passing through approximately the center in the channel width direction of each expanded channel section 23c. As a result, each channel rib 53 can straighten the airflow within each expanded channel section 23c into a flow along the channel axis.

[0028] As shown in Figure 2, the support member 5 has projections 52 that protrude rearward from the rear surface of the contact portion 51. Each projection 52 is provided at four positions along the periphery of the contact portion 51. As shown in Figure 9, each projection 52 has a fitting claw portion 52a that extends radially outward from the contact portion 51 at its tip. Each projection 52 also has a tapered portion 52b whose circumferential width diameter tapers from the base end to the tip of the projection. Furthermore, each projection 52 has a rib 52c that extends radially inward from the contact portion 51 along its entire projection direction. The radial projection length of the rib 52c tapers from the base end to the tip of the projection.

[0029] <Blower Case 6> As shown in Figure 8-9, the blower case 6 has a front case 61 and a rear case 62. The front case 61 and the rear case 62 are assembled integrally with each other by screws 63. The front case 61 has an opening 61a in its center. The front case 61 has sharp notches 61b at its top, bottom, left, and right ends. The front case 61 also has four screw receivers 61c.

[0030] The rear case 62 has a housing portion 62a that is recessed in a bottomed cylindrical shape toward the rear, and a flange portion 62b that protrudes in a flange shape from the periphery of the housing portion 62a. A blower (not shown) is housed in the housing portion 62a. The flange portion 62b has rectangular through holes 62d at four positions on the top, bottom, left, and right sides of the housing portion 62a. As shown in Figure 6, the protruding portion 52 of the support member 5 is inserted into and fitted into each through hole 62d. The flange portion 62b also has small, circular through holes 62d at positions corresponding to each screw receiver 61c of the front case 61. Each screw 63 is connected to each screw receiver 61c by passing through each through hole 62d.

[0031] <Assembly of the air conditioning flow path unit 3> The assembly procedure for each component of the air conditioning flow path unit 3 described above will now be explained in detail. First, as shown in Figure 9, the support member 5 is assembled to the flow path cover 4 from the front side of the sheet. Specifically, with the protruding portion 52 of the support member 5 facing the back side of the sheet, the contact portion 51 is fitted into the recess 43 of the flow path cover 4. As a result, as shown in Figures 9-10, each protruding portion 52 is passed through the through hole 43c or notch 43e and penetrates to the back side of the sheet. At this time, the ribs 52c of the upper and lower protruding portions 52 are assembled so that they are inserted into the sharp portion 43g of the notch 43e. Also, the ribs 52c abut against the inner peripheral edge of the through hole 43c. With these measures, the support member 5 can be assembled in a state where it is appropriately positioned in the circumferential and radial directions relative to the flow path cover 4. As shown in Figures 14-15, when the contact portion 51 is fitted into the recess 43, the peripheral edge of the contact portion 51 makes surface contact with the inclined side surface 43b of the recess 43. This allows the contact portion 51 to be provided without any gaps in the recess 43. Therefore, it is possible to suppress air leakage from between the contact portion 51 and the recess 43, which would otherwise reduce ventilation performance. Also, as shown in Figure 15, each back-side pin 54 of the contact portion 51 is inserted into each pin hole 43d of the recess 43. This suppresses circumferential rattle of the contact portion 51, allowing it to be assembled into the recess 43 more properly.

[0032] Next, the blower case 6 is assembled to the flow path cover 4 from the underside of the seat. In reality, the blower case 6 is assembled to the flow path cover 4 with the front case 61 and rear case 62 pre-assembled as a single unit. However, for the sake of explanation, in this specification, as shown in Figures 6 and 8, the front case 61 and rear case 62 will be described as being assembled to the flow path cover 4 separately. As shown in Figure 8, the front case 61 is assembled such that each protruding portion 52 that protrudes through the recess 43 is inserted into each notch 61b. As each protruding portion 52 is inserted, each notch 61b presses against the tapered portion 52b of each protruding portion 52, sandwiching it from both sides in the circumferential direction. This makes it easy to position the front case 61 in the circumferential direction relative to the support member 5. Here, each notch 61b corresponds to the "sandwiching portion" of the present invention.

[0033] As shown in Figure 14, when assembled with the support member 5, the front case 61 is pressed in an annular shape around the connection port 44 of the flow path cover 4. This causes the area around the connection port 44 to be pressed between the contact portion 51 of the support member 5 and the front case 61. As a result, gaps are less likely to form around the connection port 44, improving the sealing performance. This reduces air leakage from around the connection port 44, allowing the blower connected to the connection port 44 to properly draw in air.

[0034] As shown in Figure 6, the rear case 62 is assembled such that each projection 52 is inserted into each of its fitting holes 62c. The fitting claw portion 52a at the tip of each projection 52 inserted into each fitting hole 62c snap-fits into the fitting hole 62c. This allows the rear case 62 to be supported in a simple and appropriate position relative to the support member 5. Furthermore, because each fitting claw portion 52a protrudes radially outward, interference between each fitting claw portion 52a and the housing portion 62a of the rear case 62 can be suppressed.

[0035] As described above, the front case 61 and the rear case 62 are assembled to the support member 5 and the flow path cover 4 by the protruding portion 52 of the support member 5. In other words, the blower case 6, which houses the heavy blower, can be properly supported by being assembled only to the flow path cover 4, without having to assemble it to the back frame of the seat back 1. The assembled air conditioning flow path unit 3 is then assembled in a state where it is properly positioned on the back surface 22 of the back pad 2. With the above configuration, it is possible to suppress the displacement of the positional relationship between the connection port 44 of the flow path cover 4 and the blower due to external forces such as seating load. This makes it possible to properly suppress the decrease in the intake and exhaust performance of the blower due to positional displacement.

[0036] In summary, the seat air conditioning flow channel unit according to the first embodiment has the following configuration. In the following, the reference numerals in parentheses correspond to the respective components shown in the above embodiment.

[0037] In other words, the seat air conditioning flow channel unit (3) has a support member (5) which includes a surface flow channel cover (4) that is placed over the back surface (22) of the seat pad (2) to cover a concave ventilation channel (23) formed on the back surface (22) of the pad, a connecting member (6) that is connected from the back side of the seat to a connection port (44) formed in the flow channel cover (4), a contact portion (51) that is applied to the flow channel cover (4) from the front side of the seat, and a mounting portion (52) to which the connecting member (6) can be integrally attached. The contact portion (51) presses the flow channel cover (4) between itself and the connecting member (6). In this way, by attaching the connecting member (6) to the support member (5) and pressing the connection port (44) between itself and the contact portion (51), the connecting member (6) can be assembled in a state that is properly aligned with respect to the connection port (44).

[0038] Furthermore, the contact portion (51) is applied in an annular shape along the periphery of the connection port (44). This causes the contact portion (51) to press and clamp the periphery of the connection port (44) in an annular shape between itself and the connecting member (6). As a result, gaps around the connection port (44) are less likely to form, thereby improving the sealing performance.

[0039] Furthermore, the flow channel cover (4) has a recess (43) that is frustoconical in shape and recessed toward the back side of the sheet around the connection port (44). The contact portion (51) makes surface contact with the inclined inner surface of the recess (43). As a result, by providing the contact portion (51) in the recess (43) of the flow channel cover (4), a wide space can be secured for the ventilation channel (23). In addition, because the contact portion (51) makes surface contact with the inner surface of the recess (43), it is possible to prevent gaps from forming between the flow channel cover (4) and the contact portion (51). These measures help to suppress a decrease in the ventilation performance of the ventilation channel (23).

[0040] Furthermore, the mounting portion (52) is a protruding portion (52) that passes through a through hole (43c) formed in a location away from the connection port (44) of the flow path cover (4) so ​​as to protrude to the back side of the sheet. Multiple protruding portions (52) are provided in the circumferential direction of the contact portion (51), and each has a fitting claw portion (52a) at its tip that snap-fits into the fitting hole (62c) of the connecting member (6). This allows the connecting member (6) to be attached to the support member (5) in a simple configuration by inserting the fitting claw portion (52a) of the protruding portion (52) into the fitting hole (62c) of the connecting member (6).

[0041] Furthermore, the protruding portion (52) has a tapered portion (52b) in which the width diameter along the circumferential direction of the contact portion (51) tapers from the base end to the tip of the protrusion. The connecting member (6) has a clamping portion (61b) that clamps the tapered portion (52b) in the circumferential direction when the protruding portion (52) is inserted into the connecting member (6). As a result, the clamping portion (61b) clamps the tapered portion (52b) in the circumferential direction, making it easy to position the connecting member (6) in the circumferential direction relative to the support member (5).

[0042] Furthermore, the protruding portion (52) has a rib (52c) that extends radially inward from the contact portion (51). The rib (52c) is inserted into the notch (43e) of the flow channel cover (4) to position the support member (5) circumferentially and radially relative to the flow channel cover (4). This makes it easy to position the support member (5) relative to the flow channel cover (4).

[0043] Furthermore, the fitting claw portion (52a) protrudes radially outward from the contact portion (51). This makes it less likely for the fitting claw portion (52a) to interfere with the configuration around the connection port (44).

[0044] <Other Embodiments> Although the present invention has been described above using one embodiment, the present invention can be implemented in various forms other than those described above.

[0045] 1. The air conditioning duct unit for the seat may be applied to the seat cushion rather than the seat back.

[0046] 2. The seat pad can be widely applied not only to automobile seats, but also to seats used in various vehicles other than automobiles, such as trains, aircraft, ships, and seats other than those used in vehicles, such as in public facilities like movie theaters or in homes. The ventilation channel can be any shape, as long as it is a concave shape extending along the back surface of the pad, in addition to the shape shown in the above embodiment.

[0047] 3. The connection port of the flow channel cover may be elliptical or oblong, rather than being perfectly circular. The connection port may also be angular or any other arbitrary shape, rather than being circular. The flow channel cover may be configured such that not only the peripheral edge but also the portion of the cover that contacts the back surface of the pad is adhered to the back surface of the pad. The flow channel ribs may be provided in any shape, position, and number, as long as they protrude into the flow channel of the expanded flow channel.

[0048] 4. The support member may be a fastener such as a screw that secures the connecting member from the front side of the sheet.

[0049] 5. The contact portion may be configured to directly contact the flow path cover, or it may be configured to contact it indirectly via another component such as a sealing material. The contact portion only needs to contact the flow path cover by pressing it between itself and the connecting member, and does not need to be in an annular shape along the circumference of the connection opening. The contact portion does not need to be circular and may be of any shape. The contact portion does not need to be formed in a shape that conforms to the shape of the connection opening.

[0050] 6. The mounting portion may be a hole into which a projection extending from the connecting member through the flow path cover to the surface of the sheet is inserted. Accordingly, the connecting member may be provided with ribs or fitting claws. The fitting claws may be configured to protrude radially inward. The projection does not have to have ribs. The projection does not have to have a tapered portion.

[0051] 7. The connecting member does not need to be positioned to fit around the entire circumference of the connection port. The blower case may be composed of a single component. [Explanation of Symbols]

[0052] 1 seat back 2 Back pad (seat pad) 3. Air conditioning airflow unit 4 Channel cover 5. Support Member 6. Blower case (connecting component) 20 pads 21 Pad surface 22 Pad back 23 Ventilation channel 23a Bottom 23b Side 23c Expanded channel section 23d Cover alignment groove 23e Positioning section 24 ventilation holes 41 Lid 41a Overhanging lid part 41b Cover part 42 Pad contact area 43 Recess 43a Bottom 43b Slanted side 43c through hole 43d pinhole 43e Notch 43f Trapezoidal section 43g sharp tip 44 connection ports 51 Contact part 51a Through hole 52. Protruding part (mounting part) 52a Engaging claw portion 52b Tapered section 52c Rib 53 Flow channel ribs 54 Backside pins 55 Front side pins 61 Front Case 61a opening 61b Notch (clamping part) 61c Screw receiver 62 Rear Case 62a Storage area 62b Flange section 62c fitting hole 62d through hole 63 screws

Claims

1. A seat air conditioning duct unit, A surface-shaped airflow cover that is placed over the back surface of the seat pad and covers the concave airflow channel formed on the back surface of the pad, A connecting member is connected from the back side of the sheet to a connection port formed in the aforementioned flow channel cover, The support member has a contact portion that is applied to the flow path cover from the front side of the sheet, and a mounting portion to which the connecting member can be integrally attached, The contact portion presses the flow path cover between itself and the connecting member, The flow channel cover has a recess that is recessed in a frustoconical shape from the surface side of the sheet around the connection port. A sheet air conditioning channel unit in which the contact portion makes surface contact with the inclined inner circumferential surface of the recess.

2. A seat air conditioning channel unit, A surface-shaped airflow cover that is placed over the back surface of the seat pad and covers the concave airflow channel formed on the back surface of the pad, A connecting member is connected from the back side of the sheet to a connection port formed in the aforementioned flow channel cover, The support member has a contact portion that is applied to the flow path cover from the front side of the sheet, and a mounting portion to which the connecting member can be integrally attached, The contact portion presses the flow path cover between itself and the connecting member, The mounting portion is a protruding portion that passes through a through hole formed in the flow path cover at a location away from the connection port, so as to protrude to the back side of the sheet. A sheet air conditioning flow channel unit having a plurality of protrusions provided in the circumferential direction around the connection opening of the contact portion, with fitting claws at the tips of the protrusions that snap-fit ​​into the fitting holes of the connecting member.

3. A seat air conditioning channel unit according to claim 1 or claim 2, A sheet air conditioning channel unit in which the contact portion is applied in an annular manner along the periphery of the connection port.

4. A seat air conditioning channel unit according to claim 2, The aforementioned protruding portion has a tapered portion in which the width diameter along the circumferential direction around the connection opening of the contact portion tapers from the base end to the tip of the protrusion. The aforementioned connecting member has a clamping portion that clamps the tapered portion in the circumferential direction around the connection opening by inserting the protruding portion into the connecting member, thereby providing an air conditioning flow path unit for a sheet.

5. A seat air conditioning channel unit according to claim 2, The protruding portion has a rib that extends radially inward toward the contact portion, A sheet air conditioning channel unit in which the ribs are inserted into a notch in the channel cover so as to position the support member in the circumferential and radial directions around the connection port with respect to the channel cover.

6. The air conditioning flow channel unit for a seat as described in claim 2, A sheet air conditioning channel unit in which the fitting claw portion protrudes radially outward toward the contact portion.

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