JP2014094622A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress interference sound between an accessory component, e.g. an air duct, and a seat frame without increase of the number of components.SOLUTION: A vehicle seat 1 comprises a rear frame 3Fc of a seat cushion 3, a seat cushion pad 3P arranged so that its back surface part is brought into contact with the rear frame 3Fc and a second air duct 13 (accessory component) arranged in such a way as to pass a part in the vicinity of the rear frame 3Fc tending to cause interference with the rear frame 3Fc. In the back surface part of the seat cushion pad 3P, a soft back surface material 3B for enhancement of the structural strength of the seat cushion pad 3P is laminated integrally. The back surface material 3B has an extension part 3Ba extended in such a way that the back surface material 3B is expanded out of the back surface part of the seat cushion pad 3P, and the extension part 3Ba is arranged so as to intervene between the rear frame 3Fc and the second air duct 13.

Description

  The present invention relates to a vehicle seat. Specifically, a vehicle seat having a seat frame, a seat pad provided in contact with the back surface of the seat frame, and an accessory disposed through a location near the seat frame that easily interferes with the seat frame. About.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration in which a fan for blowing air is provided below a seat cushion is known (Patent Document 1). The fan is connected to a duct for guiding the sent-out air to the seat back, and the duct is disposed in the seat back through the rear portion of the seat cushion.

JP 2000-152849 A

  In the above-described prior art, when the duct is disposed near the seat cushion frame, the duct may interfere with the seat cushion frame due to vibrations when the vehicle travels and generate noise. However, it is not preferable to set another member for reducing the interference between them because it leads to an increase in the number of parts and an increase in cost. The present invention was devised as a solution to the above problem, and the problem to be solved by the present invention is to reduce the interference sound between an accessory such as a duct and a seat frame without increasing the number of parts. It is to be suppressed.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
1st invention has a seat frame, the seat pad provided in contact with the back surface part to the seat frame, and the accessory parts arranged through the vicinity of the seat frame that easily interferes with the seat frame It is a vehicle seat. A soft back material that functions to enhance the structural characteristics of the seat pad is provided on the back surface of the seat pad so as to be integrally laminated. The back material has an extension part extended so that the shape projects outward from the back part of the seat pad, and the extension part is provided between the seat frame and the accessory.

  Here, as "a soft back surface material that functions to enhance the structural characteristics of the seat pad", the structural strength of the seat pad is increased, or abnormal noise generated between the seat pad and the seat frame is prevented. And a soft back material that functions in

  According to the first aspect of the invention, the extension of the soft back material is provided between the seat frame and the accessory part, so that the generation of noise due to the interference between the accessory part and the seat frame can be suppressed. . In this manner, by forming the extension portion on the back surface material provided on the back surface portion of the seat pad, it is possible to suppress the interference sound between the accessory part and the seat frame without increasing the number of parts.

  The second invention is the following configuration in the first invention described above. In the seat pad, a hollow portion is formed in a part thereof so as to allow the accessory parts to pass therethrough. The extension part is formed as a region part of the back material exposed to the cavity part by forming the cavity part.

  According to the second aspect of the present invention, the hollow part through which the accessory part can be passed is formed in the seat pad, so that the accessory part can be disposed in a compact state in which the accessory part is accommodated in the seat outer shape. Moreover, the extension part can be rationally formed without providing a substantial extension shape in the back surface material by forming the region part of the back material exposed to the same part by forming the hollow part.

  The third invention is the following configuration in the second invention described above. The seat pad is formed in a bent shape so that the contact portion of the back surface portion provided in contact with the seat frame is wound along the outer peripheral surface of the seat frame. A hollow portion is formed at a part of the bent contact portion of the seat pad, so that the extension portion is provided between the seat frame and the accessory part.

  According to the third aspect of the invention, the hollow portion is formed in the bent part of the seat pad that is a contact portion with the seat frame, so that the extension portion exposed to the hollow portion is the seat frame and the accessory part. Between the two. Therefore, the configuration in which the extension portion is provided between the seat frame and the accessory can be easily formed only by forming the cavity portion. Moreover, since the extension part formed becomes a structure in which the peripheral part continues with the back surface material of a seat pad back, it can be provided in the state which maintained the extension part strongly shape.

1 is a perspective view showing a schematic configuration of a vehicle seat of Example 1. FIG. It is a disassembled perspective view of a seat cushion. It is the perspective view which looked at the seat cushion pad from the back side. It is the perspective view which looked at the seat cushion from the back side. It is the VV sectional view taken on the line of FIG. FIG. 6 is an enlarged view of a VI part in FIG. 5.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the sheet 1 of Example 1 will be described with reference to FIGS. As shown in FIG. 1, the seat 1 of this embodiment is configured as a passenger seat of an automobile, and includes a seat back 2 that serves as a backrest portion for a seated occupant and a seat cushion 3 that serves as a seating portion. The seat cushion 3 is installed on the floor of the vehicle with a pair of left and right slide devices 4 interposed therebetween, and is provided in such a manner that the installation position relative to the floor can be adjusted in the seat front-rear direction. Yes. The seat back 2 has lower end portions on both the left and right sides connected to rear end portions on both the left and right sides of the seat cushion 3 via a reclining device (not shown). It is in a state where it is provided so that the (angle) can be adjusted in the longitudinal direction of the seat.

  The seat 1 described above sucks external air from the seat back surface of the seat back 2 on which the back of the seated occupant leans and the seat cushion 3 on which the thigh of the seated occupant presses, respectively. An air intake device 10 is provided for exhausting air to the bottom of the seat cushion 3. The air intake device 10 is constituted by a centrifugal air exhaust device 11 installed at the bottom of the seat cushion 3, and air is supplied from an air intake port 11 </ b> A directed upward of the seat by rotation of an internal fan of the air exhaust device 11. The air is exhausted from the exhaust port 11B directed to the front side of the seat.

  In the above-described exhaust fan 11, the intake port 11 </ b> A is connected to the intake connection port 3 </ b> Pd <b> 1 formed on the back surface portion (lid cover 3 </ b> Pd) of the seat cushion pad 3 </ b> P via the first duct 12. The intake connection port 3Pd1 is formed in a shape communicating with a ventilation groove 3Pa having a plurality of air distribution paths penetrating to a seating surface (upper surface) formed in the seat cushion pad 3P. Thereby, by the operation of the exhaust fan 11, external air is sucked downward from the seating surface of the seat cushion 3 through the ventilation groove 3Pa.

  Further, a second duct 13 different from the first duct 12 described above is further connected to the bottom of the seat cushion pad 3P. The second duct 13 connects the duct connection port 3Pd2 formed on the back surface portion (lid cover 3Pd) of the seat cushion pad 3P and the bellows-shaped third duct 14 guided from the seat back 2. Thus, the ventilation groove 3Pa in the seat cushion pad 3P and the third duct 14 are in a state of communicating with each other. The duct connection port 3Pd2 described above is formed in a state of communicating with the ventilation groove 3Pa formed in the seat cushion pad 3P described above. Although not shown, the third duct 14 is in communication with a ventilation groove having a plurality of air distribution channels penetrating to the backrest surface (front surface) formed in the seat back pad. It is in the state provided by being connected.

  The above-described third duct 14 is formed in an accordion shape so that it can be freely bent and deformed in the front-rear direction and the width direction of the seat or can be expanded and contracted in the vertical direction. Due to the flexible structure, the movement when the backrest angle of the seat back 2 is changed can be freely released. Therefore, the connection between the second duct 13 and the third duct 14 described above allows the above-described exhaust fan 11 and the ventilation groove in the seat back pad (not shown) to communicate with each other through the ventilation groove 3Pa in the seat cushion pad 3P. The state is connected to the state. Accordingly, external air is also sucked from the backrest surface of the seat back 2 through the second duct 13 and the third duct 14 described above by the operation of the exhaust fan 11.

  Hereinafter, specific configurations of the seat cushion 3 and the intake device 10 described above will be described in more detail. As shown in FIG. 2, the seat cushion 3 is made of a cloth having excellent air permeability as a skin material, a steel seat cushion frame 3 </ b> F that forms an inner skeleton thereof, a foam cushion seat cushion pad 3 </ b> P that forms a cushion structure. Seat cushion cover 3C. The seat cushion frame 3 </ b> F is configured by being assembled into a square frame-like skeleton shape along the outer peripheral shape of the seat cushion 3. Specifically, the seat cushion frame 3F includes a pair of left and right side frames 3Fa made of steel plates that are long in the front-rear direction, and steel plates that are integrally stretched between the front end portions of the side frames 3Fa. The front panel 3Fb made of steel and the rear frame 3Fc made of a circular steel pipe inserted between the rear ends of the side frames 3Fa and rigidly coupled together.

  Four S springs 3Fs are hooked between the front panel 3Fb and the rear frame 3Fc. Each of these S springs 3Fs is formed in a wave-like shape in the sheet width direction, and is arranged in a state where four are arranged side by side in the sheet width direction in the region between both side frames 3Fa. Yes. These S springs 3Fs are elastic in a state in which the central part of a seat cushion pad 3P set on the upper part of a seat cushion frame 3F described later is close to the surface from the lower side by being bent in a wave shape in the seat width direction. It is the structure which supports it.

  The seat cushion pad 3P is formed by foam-molding a flexible polyurethane foam raw material. The seat cushion pad 3P is assembled to the upper part of the above-described seat cushion frame 3F, so that each frame portion (each side frame 3Fa, front panel 3Fb, rear frame 3Fc) of each seat cushion frame 3F and each above-described S spring 3Fs. By this, it is set in a state where it is supported in a state close to the surface from the lower side. Specifically, the seat cushion pad 3P is in a state of being firmly supported from below by the outer periphery supported by each frame portion of the seat cushion frame 3F described above and supported by each S spring 3Fs. In the central portion, these are elastically softly supported from below.

  Specifically, the seat cushion pad 3P described above is assembled and set so as to cover each frame portion of the seat cushion frame 3F from the seat outer peripheral side. Then, after the seat cushion pad 3P is assembled to the upper part of the seat cushion frame 3F, the seat cushion cover 3C is placed so that the entire surface (the seating surface and the front, rear, left and right side surfaces) is covered, Each peripheral edge portion of the cushion cover 3C is pulled and fixed to the bottom portion of the seat cushion frame 3F, so that the side frame 3Fa, the front panel 3Fb, and the rear of the seat cushion frame 3F are applied by the tension of the seat cushion cover 3C. Each frame 3Fc is firmly pressed against each other to be assembled and held.

  With the above assembly, the seat cushion pad 3P is configured such that the central buttocks support portion 3Pb that receives strong body pressure from the seat occupant's buttocks is appropriately softly received from below by the S springs 3Fs described above. The outer periphery of the seat cushion frame 3F is held in a state of being strongly and stably supported from below by the frame portions of the seat cushion frame 3F.

  Here, as shown in FIG. 5, the seat cushion pad 3 </ b> P described above has a seating surface of the thigh support portion 3 </ b> Pc in which the seating surface of the buttocks support portion 3 </ b> Pb that receives the buttocks of the seated occupant supports the thigh of the seat occupant. It is formed at a lower position. As a result, the seat occupant's buttocks can be received at a position lower than the thigh, so that the seated occupant can take a comfortable seating posture in which he can lean back. On the other hand, the butt support portion 3Pb of the seat cushion pad 3P is formed such that the back surface portion thereof is greatly bulged below the back surface portion of the above-described thigh support portion 3Pc. The thickness in the height direction for receiving the occupant's buttocks is thicker than the thigh support 3Pc. Accordingly, the seat cushion pad 3P has a configuration in which the position of the seating surface of the buttocks support portion 3Pb is set low, but the large seating pressure received from the buttocks of the seated occupant is widened by the large thickness of the buttocks support portion 3Pb. It is configured to be able to receive the buttocks softly by dispersing.

  Specifically, the back surface portion of the seat cushion pad 3P described above has a reverse mountain shape in which the pad thickness gradually decreases toward the front and rear sides with the back surface portion of the above-described buttocks support portion 3Pb as the apex P. It is formed in an inclined shape. Here, as shown in FIG. 3, the above-described seat cushion pad 3 </ b> P is in a state in which each air distribution path of the above-described ventilation groove 3 </ b> Pa is exposed to the outside due to the shape of the molding die during foam molding. It is set as the structure formed. Then, after the foam molding, the air ventilation groove 3Pa is provided with a non-breathable planar lid cover 3Pd adhered to the back surface of the seat cushion pad 3P so as to cover the ventilation groove 3Pa. The groove 3Pa is in a state formed so as to pass through the groove region on the back surface side of the seat cushion pad 3P covered by the lid cover 3Pd. Thus, the ventilation groove 3Pa is in a state formed in a shape extending in the in-plane direction in the lower layer region near the back surface portion of the seat cushion pad 3P.

  Specifically, the shape of the ventilation groove 3Pa opened to the back side by foam molding of the seat cushion pad 3P described above is a shape that opens across the apex P of the buttocks support portion 3Pb in the front-rear direction. By being covered with the lid cover 3Pd after molding, it is formed in a state of opening to the outside through the intake connection port 3Pd1 and the duct connection port 3Pd2 opened in the lid cover 3Pd. Yes. The intake connection port 3Pd1 formed in the lid cover 3Pd described above is formed so as to open in the back surface region in front of the vertex P described above of the seat cushion pad 3P. Further, the duct connection port 3Pd2 is formed so as to open in the back surface region on the rear side of the above-described vertex P of the seat cushion pad 3P.

  Further, as shown in FIG. 4, the seat cushion pad 3P described above has a rear portion 3Pe provided in contact with the rear frame 3Fc of the seat cushion frame 3F on the outer peripheral surface of the rear frame 3Fc formed in a circular tube shape. A hollow portion 3Pe1 is formed in a shape where the shape is partially cut out at the center portion in the sheet width direction of the bent rear portion 3Pe. Yes. This hollow portion 3Pe1 is also formed by the shape of the molding die at the time of foam molding of the seat cushion pad 3P, similarly to the above-described ventilation groove 3Pa, and at the center portion in the seat width direction of the rear portion 3Pe of the seat cushion pad 3P. In the height direction, the cross section is formed in a rectangular shape.

  As shown in FIGS. 5 to 6, the above-described second duct 13 is provided in the hollow portion 3 </ b> Pe <b> 1 in the height direction. In this way, the second duct 13 is provided to be passed through the rear portion 3Pe of the seat cushion pad 3P, so that the second duct 13 does not pass through the region on the rear side of the rear portion 3Pe, and the rear of the seat. It is set as the state arrange | positioned in the compact state in which the overhang | projection to the side was suppressed. However, since the second duct 13 is provided through the rear portion 3Pe of the seat cushion pad 3P in this way, the second duct 13 is passed through the rear side of the rear frame 3Fc of the seat cushion frame 3F. It will be in the state and will be in the state arrange | positioned in the vicinity location which is easy to interfere with the rear frame 3Fc.

  Here, the above-described second duct 13 is connected at one end to a duct connection port 3Pd2 formed on the back surface portion (lid cover 3Pd) of the seat cushion pad 3P, and extends rearward and upward from there to the other end. Is connected to the lower end portion of the bellows-shaped third duct 14 guided from the seat back 2, and the structure strength is increased to support the third duct 14 having the bellows structure from the lower side. It is made of a flexible resin material. For this reason, when such a hard second duct 13 interferes with the rear frame 3Fc by an action such as vehicle vibration, an unpleasant tapping sound (interference sound) may be generated.

  Therefore, in order to avoid the direct interference between the second duct 13 and the rear frame 3Fc described above, a soft extension 3Ba made of a non-woven fabric is interposed therebetween. The extension 3Ba is provided by being extended from a planar back surface material 3B made of a nonwoven fabric provided in a state of being laminated integrally with the back surface of the seat cushion pad 3P. By using the extension 3Ba extending from the back surface material 3B as a buffer material for avoiding the interference, the interference sound can be suppressed without adding another component. Here, the seat cushion pad 3P corresponds to the “seat pad” of the present invention, the rear frame 3Fc corresponds to the “seat frame” of the present invention, and the rear portion 3Pe corresponds to the “contact point (with the seat frame) of the present invention. The second duct 13 corresponds to the “accessory part” of the present invention.

  Here, the back surface material 3B is integrally formed on the back surface portion of the seat cushion pad 3P by foaming the urethane resin in a state of being set in advance in the mold during foam molding of the seat cushion pad 3P. It is provided as a laminated state. The back surface material 3B is formed in a state in which the foamed resin material is impregnated and cured by the integral molding described above, and the back surface portion of the seat cushion pad 3P is more than the seat cushion pad 3P. It is provided as a state in which a hard back layer is formed. As shown in FIG. 3, the back surface material 3 </ b> B is provided over the entire back surface of the seat cushion pad 3 </ b> P. Accordingly, as shown in FIGS. 2 and 5, the back surface portion of the seat cushion pad 3P is supported in a state close to a line by each outer peripheral portion supported by each frame portion of the seat cushion frame 3F and each S spring 3Fs. Each of the central portions is hardened so that the force supported by them can be widely dispersed in the surface direction at the back surface portion.

  Further, as shown in FIG. 3, the above-described ventilation groove 3Pa formed in an opening shape on the back surface portion of the seat cushion pad 3P is also hardened by the integral molding of the back surface material 3B described above. It is in a state where it is formed in a shape that is not easily crushed even if it receives a seating pressure from a seated occupant. Note that the back material 3B has holes formed in portions that pass through the ventilation groove 3Pa, and does not block the shape of each hole that penetrates to the seating surface of the seat cushion pad 3P of the ventilation groove 3Pa. It is formed into a shape.

  As shown in FIGS. 3 and 5 to 6, the back surface material 3B described above is integrally laminated and formed on the back surface portion of the rear portion 3Pe wound around the rear frame 3Fc of the seat cushion pad 3P described above. Is provided. Specifically, as shown in FIGS. 3 and 4, the back surface material 3B described above is formed in the formation region of the cavity 3Pe1 that is pierced in the height direction through the rear portion 3Pe of the seat cushion pad 3P described above. In particular, the extended portion is provided without being cut out, and a portion exposed in the hollow portion 3Pe1 is formed as an extended portion 3Ba.

  As described above, the extension 3Ba is not provided in a cantilevered manner by being partially overhanged or cut out from the back surface material 3B, and both sides thereof are continuous with other back material 3B portions. It is formed as an intermediate part connected to each other. Therefore, as shown in FIGS. 5 to 6, the extension portion 3Ba described above is always suspended on the outer peripheral surface of the rear frame 3Fc described above in such a manner that it is suspended by the other portions of the back surface material 3B continuous on both sides. Following the shape of the bent back surface portion of the rear portion 3Pe to be covered, it is held in a bent shape so as to be wound around the outer peripheral surface of the rear frame 3Fc. As a result, the extension 3Ba is provided in a state in which the extension 3Ba is always held in a fixed state between the rear frame 3Fc and the second duct 13 passed through the cavity 3Pe1. It is in a state.

  Next, the configuration of the intake device 10 will be described. As shown in FIG.2 and FIG.5, the air exhaust device 11 is straddle | crossing each S spring 3Fs of two center among the four S springs 3Fs hooked by the seat cushion frame 3F mentioned above, these lower parts. It is provided as a state fixed with screws. Specifically, as described above with reference to FIG. 5, the air exhaust device 11 is disposed in a region in front of the apex P of the back surface portion of the bottom support portion 3Pb where the pad thickness of the seat cushion pad 3P is the largest. As a state in which 11A is directed to the upper side of the seat, the first duct 12 is connected to the intake connection port 3Pd1 formed on the back surface portion (lid cover 3Pd) of the seat cushion pad 3P described above. . As described above, the intake connection port 3Pd1 is formed in the planar lid cover 3Pd provided by being bonded to the back surface portion of the seat cushion pad 3P, and the intake port 3Pd1 is formed on the bottom support portion 3Pb of the seat cushion pad 3P. An opening is formed in a region in front of the apex P of the back surface.

  As shown in FIG. 5, the second duct 13 is disposed in a region on the rear side of the apex P of the back surface portion of the bottom support portion 3Pb of the seat cushion pad 3P described above, and one end of the second duct 13 is seat cushion. A bellows-like third duct 14 is connected to a duct connection port 3Pd2 formed on the back surface portion (lid cover 3Pd) of the pad 3P, extends rearwardly and upwardly therefrom, and is guided from the seat back 2 at the other end. It is set as the state connected with the lower end part. In this way, the second duct 13 is connected to the duct connection port 3Pd2 formed in the back surface of the region behind the apex P of the seat cushion pad 3P, so that the space in the seat cushion pad 3P (the ventilation groove 3Pa) ), The second duct 13 is arranged without straddling the apex P in the front-rear direction by being connected to the exhaust fan 11 disposed in the region in front of the apex P. Yes.

  As a result, even if the buttocks support portion 3Pb of the seat cushion pad 3P receives a large seating load from the buttocks of the seated occupant and bends greatly downward, the second duct 13 is back of the seat cushion pad 3P. It is designed not to be subjected to an excessive load that is pushed and bent by the portion from above. Further, since the second duct 13 does not straddle the apex P of the back surface portion of the bottom support portion 3Pb in the front-rear direction, the arrangement space in the seat height direction of the second duct 13 is suppressed to be compact. It has been.

  Further, as in the present embodiment, since the intake port 11A of the exhaust fan 11 is arranged upward, the intake connection port 3Pd1 formed in the back surface portion (lid cover 3Pd) of the intake port 11A and the seat cushion pad 3P. When the second duct 13 is connected to the height region between the first duct 12 and the first duct 12, the installation height of the exhaust fan 11 must be lowered. The installation height of the exhaust fan 11 is established by connecting the duct connection port 3Pd2 formed on the back surface (lid cover 3Pd) and communicating with the exhaust fan 11 through the space (ventilation groove 3Pa) in the seat cushion pad 3P. Without lowering the height, the second duct 13 and the exhaust fan 11 can be arranged so as to overlap in the height direction, and the arrangement space in the height direction can be reduced in a compact manner.

  Thus, according to the configuration of the seat 1 of the present embodiment, the second portion 3Ba is formed on the back surface material 3B provided on the back surface portion of the seat cushion pad 3P, thereby increasing the second number without increasing the number of parts. Interference sound between the duct 13 (accessory part) and the seat cushion frame 3F can be suppressed. Further, by forming the hollow portion 3Pe1 through which the second duct 13 can pass through the seat cushion pad 3P, the second duct 13 is disposed in a compact state in which the seat cushion 3 is accommodated within the front-rear width of the seat cushion 3. be able to. Further, by forming the region of the back material 3B exposed in the cavity 3Pe1 as an extension 3Ba, the extension 3Ba can be rationally formed without providing a substantial extension shape on the back 3B. can do.

  Further, a cavity 3Pe1 penetrating in the height direction is formed in a part of the rear part 3Pe bent downward so as to be in contact with the rear frame 3Fc of the seat cushion pad 3P, whereby the cavity 3Pe1 is formed. The extension 3Ba exposed inside is provided between the rear frame 3Fc and the second duct 13. Therefore, a configuration in which the extension 3Ba is provided between the rear frame 3Fc and the second duct 13 can be easily formed only by forming the cavity 3Pe1. Moreover, since the formed extension portion 3Ba has a configuration in which the peripheral edge portion is continuous with the back surface material 3B on the back of the seat cushion pad 3P, the extension portion 3Ba can be provided in a state in which the shape is strongly maintained.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, in each of the above embodiments, the automobile seat 1 is illustrated as an example of the vehicle seat of the present invention. However, the vehicle seat of the present invention can be used for various vehicles such as vehicles other than automobiles, railroads, airplanes, ships, and the like. The present invention can be applied to a seat used for a vehicle.

  In addition, in the above embodiment, the second duct 13 and the rear frame 3Fc of the seat cushion 3 are exemplified for the configurations of the “attachment parts” and the “seat frame” that are in an arrangement relationship that easily interferes with each other. The “accessory part” may be any part provided in addition to the duct and attached to a sheet such as a wiring or a cable. In addition, the “seat frame” may be a frame part in which the “accessory part” is disposed through the vicinity thereof, and may be a component frame of the seat back in addition to the component frame of the seat cushion. The “accessory part” is not limited to a “hard” part that generates an interference sound by interference with the “seat frame”, but may be a “soft” part. Even if the “accessory” is a soft one, the “extended part” of the “back material” is interposed between the “seat frame” and the hard part such as the “seat frame”. This is because damage due to rubbing can be reduced.

  In addition, the “cavity” for passing the “accessory part” is not formed in the “seat pad”, and the “extension part” of the “back material” partially extends the “back material”. It may be formed by overhanging or cutting out. That is, the “extension portion” of the “back material” does not have to function in a plane extending in the in-plane direction (extension direction) of the “back material”. It may be provided in a state of being hung down from the “back surface material” so as to be interposed between the two, or bent in a predetermined direction. In addition to the non-woven fabric formed in a laminated state by impregnating and curing by integral molding with the seat pad as shown in the above embodiment, the “back material” increases the structural strength of the seat pad, In order to prevent abnormal noise generated between the seat pad and the seat frame, various soft face materials provided integrally laminated on the back surface portion of the seat pad can be applied.

  Further, the “cavity” formed in the “seat pad” may be formed at any one of the four corners of the “seat pad”. In this case, when the “cavity” has a rectangular shape, the “extended portion” of the “back material” exposed in the “cavity” is connected to the “back material” on two sides. It will be supported in the edge part of this, and it will be maintained in the state of the same shape as a back material. In addition, the “cavity portion” for passing the “accessory part” formed in the “seat pad” may be a round shape or a triangular shape in addition to a rectangular cross section.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion 3P Seat cushion pad (seat pad)
3Pa Ventilation groove 3Pb Bottom support part 3Pc Thigh support part 3Pd Lid cover 3Pd1 Intake connection port 3Pd2 Duct connection port 3Pe Rear part (contact point with seat frame)
3Pe1 Cavity 3B Back material 3Ba Extension 3C Seat cushion cover 3F Seat cushion frame 3Fa Side frame 3Fb Front panel 3Fc Rear frame (seat frame)
3Fs S spring 4 Slide device 10 Intake device 11 Ventilator 11A Intake port 11B Exhaust port 12 First duct 13 Second duct (accessory)
14 3rd duct P vertex

Claims (3)

A vehicle seat comprising: a seat frame; a seat pad provided with a back surface portion in contact with the seat frame; and an accessory disposed through a location near the seat frame that easily interferes with the seat frame. Because
The back surface portion of the seat pad is provided in a state where a soft back material that functions to enhance the structural characteristics of the seat pad is integrally laminated,
The back material has an extension portion extended so that the shape projects outward from the back surface portion of the seat pad, and the extension portion is provided between the seat frame and the accessory. A vehicle seat characterized by The vehicle seat according to claim 1,
In the seat pad, a hollow portion is formed in a part of the seat pad through which the accessory part passes, and the extension portion is exposed to the hollow portion by forming the hollow portion. A vehicle seat characterized by being formed as a region portion of the vehicle. The vehicle seat according to claim 2,
The seat pad is formed in a bent shape so that the contact portion of the back surface portion provided in contact with the seat frame is wound along the outer peripheral surface of the seat frame. A vehicle seat characterized in that the cavity is formed in a part of a contact location, so that the extension is provided between the seat frame and the accessory. .

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