JP5617660B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat having a pad constituting a cushion structure of a seat body and a support body that is applied to the back surface of the pad and supports the pad from the back surface side.

  2. Description of the Related Art Conventionally, some vehicle seats are provided with a resonator that can reduce noise such as operating noise and road noise of electrical components arranged in the vehicle. For example, Patent Document 1 discloses a technology in which a frame structure of a seat back is formed by resin molding so as to have a hollow structure inside, and a resonator is configured by opening a part of the hollow structure through the outside. Is disclosed.

JP 2006-44509 A

  However, in the above prior art, in order to construct a resonator, the frame structure must be a double structure that is hollow inside, and the structure becomes complicated. The present invention has been developed to solve the above-described problems, and an object of the present invention is to enable a resonator to be easily set on a vehicle seat.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
1st invention is the vehicle seat by which the shield which covers this lateral side surface was provided in the lateral side surface of the seat main body. A plate-like intermediate member is disposed between the shield and the lateral side surface of the sheet body covered with the shield. The intermediate member has an outer surface whose surface is directed to the shield side and an inner surface whose surface is directed to the inner side of the sheet main body, which is the opposite side, and a plurality of standing members having at least an inner surface formed in a lattice shape. As a member that can absorb energy by deforming the standing wall portion at the time of a side collision of the vehicle, by forming a waffle shape in which the concave portion of the vehicle is surrounded and arranged in the in-plane direction. Configured to work. On the inner surface of the intermediate member having the waffle shape, a lid member that covers each concave portion is formed by a member that is integral with or separate from the intermediate member, and the lid member has a plurality of pieces that communicate with each concave portion. An opening hole is formed therethrough. A resonator is formed by a configuration in which the opening holes and the recesses communicate with each other.

  According to the first aspect of the present invention, the waffle-shaped intermediate member serving as the energy absorbing member is provided between the lateral side surface of the seat body and the shield, and the lid member having the opening hole on the inner side surface of the intermediate member is easily set. With this configuration, a resonator having an opening facing the inside of the seat body is formed. Thus, the resonator can be set on the vehicle seat with a simple configuration in which the lid member is provided on the inner side surface of the intermediate member provided as the energy absorbing member.

  According to a second invention, in the first invention described above, the outer surface of the intermediate member is also formed side by side in the in-plane direction with a plurality of recesses surrounded by a standing wall portion formed in a lattice shape. The waffle shape thus formed is configured to function as a member capable of absorbing energy by deforming the standing wall portion at the time of a side collision of the vehicle. Further, the shield is provided on the outer side surface of the intermediate member so as to cover each concave portion formed on the outer side surface, and a plurality of opening holes penetrate through the shield so as to communicate with the respective concave portions. Is formed. A resonator is formed by a configuration in which the opening holes and the recesses communicate with each other.

  According to the second aspect of the invention, the shield is provided so as to cover the outer surface of the waffle-shaped intermediate member, and a plurality of openings are formed in the shield so that each recess formed on the outer surface of the intermediate member communicates with the outside. A resonator having an opening directed to the outside of the sheet main body is formed by a simple configuration for forming the hole. In this manner, a resonator that opens to the outside of the sheet main body can be easily formed using the configuration of the intermediate member and the shield.

According to a third aspect of the present invention, in the first or second aspect described above, a driving motor for an electric reclining device that adjusts the backrest angle of the seat back is disposed on the lateral side surface of the seat body. A resonator that opens to the inner side of the sheet body with an opening formed in the lid member facing the opening is disposed in the arrangement space.

  According to the third aspect of the invention, the resonator is disposed by facing the opening in the space for disposing the drive motor of the electric reclining device disposed on the lateral side surface of the seat body. Thus, it is possible to satisfactorily exert the function of silencing the operating sound emitted from the drive motor.

FIG. 3 is an exploded perspective view showing a main part structure of a vehicle seat according to a first embodiment. It is a side view of a vehicle seat. It is the III-III sectional view taken on the line of FIG. It is a model figure of a resonator.

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

  First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS. As shown in FIGS. 1 to 2, in the vehicle seat of the present embodiment, the seat body 1 includes a seat back 2 that serves as a backrest and a seat cushion 3 that serves as a seating portion. The seat back 2 is configured such that the lower ends of the left and right sides of a back frame (not shown) constituting the skeleton are rear ends of the left and right sides of the cushion frame (not shown) of the seat cushion 3 via the electric reclining device 4. It is connected and supported by the part. As a result, the seat back 2 changes its backrest angle in the front-rear direction as each electric reclining device 4 is driven, or is fixed at a position where the backrest angle is adjusted by restraining each drive. It is supposed to be.

  Each electric reclining device 4 is driven by receiving a rotational driving force from a driving motor M provided on an outer side portion of the seat cushion 3 on the vehicle entrance door side. . Specifically, the drive motor M is provided side by side with the electric reclining devices 4 in the seat width direction so that power can be transmitted to the rod 4R passed between the central portions of the electric reclining devices 4. The power is transmitted to the electric reclining devices 4 through the rods 4R simultaneously by the drive rotation and driven, and the electric reclining devices 4 are driven at the same time by restraining the drive rotation. It has come to be stopped. The driving and stopping control of the driving motor M is performed by operating the first lever 8A disposed on the shield 5 provided on the outer side portion of the seat cushion 3.

  Specifically, the first lever 8A is formed in a vertically long shape imitating the shape of the seat back 2, and the backrest angle of the seat back 2 is adjusted by an operation of pushing the first lever 8A in the front-rear direction. It is designed to tilt toward the operated direction. In addition to the first lever 8A, a second lever 8B is formed on the shield 5. The second lever 8B is shaped like a seat cushion 3 and is elongated in the front-rear direction. The second lever 8B controls the operation of a drive motor (not shown) separately provided from the drive motor M by pushing the lever in the front-rear direction, so that the second lever 8B is moved between the seat body 1 and the floor. An electric slider device (not shown) provided in the above is operated to move the slide position of the seat body 1 to the operated direction side.

  Here, resin shields 5 are mounted on the lateral sides of the left and right sides of the seat cushion 3. These shields 5 each include the entire lateral side surface of each side of the seat cushion 3 and a connecting portion that extends upward from the rear end portion of each side of the seat cushion 3 and the lower end portion of each seat back 2. It is formed in a long plate shape that can be covered. Thereby, the driving motor M disposed on the outer side portion of the rear end portion of the seat cushion 3 is also covered from the outside by the shield 5 disposed on the outer side portion. . Further, between the side part outside the rear end of the seat cushion 3 in which the driving motor M is arranged and the side part of the shield 5 arranged outside the seat cushion 3, a side collision of the vehicle occurs. An intermediate member 6 made of a resin plate member that can function as an energy absorbing member is disposed.

  The intermediate member 6 has an outer surface 6B with the plate surface facing the shield 5 side and an inner surface 6A with the plate surface facing the inner side of the sheet body 1 on the opposite side, as shown in FIG. Further, the outer side surface 6B is applied to the inner side surface of the shield 5 so as to be integrally fixed to the side surface portion of the shield 5 by screws Bi. The intermediate member 6 has a waffle shape in which the inner side surface 6A is formed side by side in the in-plane direction with a plurality of concave portions 6A2 surrounded by standing wall portions 6A1 formed in a lattice shape. ing. Thus, the intermediate member 6 is configured as a member whose inner side surface 6A can absorb energy by deforming the standing wall portion 6A1 by receiving a load from the outside at the time of a side collision of the vehicle.

  Further, the intermediate member 6 also has an outer surface 6B formed in a waffle shape in which a plurality of concave portions 6B2 are surrounded by a standing wall portion 6B1 formed in a lattice shape and are arranged in the in-plane direction. Has been. Thereby, the intermediate member 6 is also configured as a member whose outer surface 6B can absorb energy by deforming the standing wall portion 6B1 by receiving a load from the outside at the time of a side collision of the vehicle. The intermediate member 6 is provided with a resin lid member 7 integrally abutting and joined to the inner side surface 6A so as to cover each recess 6A2 from the inside. Yes. The lid member 7 is formed in a plate shape, and a plurality of open holes 7A having a circular cross section are formed through each surface portion covering the concave portions 6A2 so as to communicate with the concave portions 6A2. Has been. These opening holes 7A function as resonance tube portions of the resonator 10 described later by opening the above-described recesses 6A2 inside the sheet body 1.

  Further, the outer side surface 6B of the intermediate member 6 is provided with the side surface portion of the shield 5 arranged on the outer side thereof in a state of being in abutment with each concave portion 6B2 in a form of a lid from the outside. Yes. A plurality of opening holes 5A having a circular cross section are formed through each side surface portion that covers each recess 6B2 of the shield 5 so as to communicate with each recess 6B2. These opening holes 5 </ b> A function as resonance tube portions of a resonator 20 described later by opening the respective recesses 6 </ b> B <b> 2 described above to the outside of the sheet body 1.

  As described above, by providing the lid member 7 and the shield 5 in contact with each other so that the inner side surface 6A and the outer side surface 6B of the intermediate member 6 are respectively covered, the inner side of the intermediate member 6 is provided. In addition, the noise transmitted from the vehicle body (body panel BP, etc.) such as the operation sound and road noise generated by the driving motor M disposed in the seat body 1 described above is reduced by a resonance effect in each of the outer parts. A plurality of resonators 10 and 20 that can be formed are formed. Hereinafter, the structure of these resonators 10 and 20 will be described in detail.

  First, the configuration of the resonator 10 formed inside the intermediate member 6 will be described. That is, as shown in FIGS. 1 to 3, the resonator 10 includes each opening hole 7 </ b> A formed in the lid member 7 and each inner surface 6 </ b> A of the intermediate member 6 that communicates with the opening hole 7 </ b> A. The recess 6A2 is formed. Specifically, each recess 6A2 is formed in a shape that forms a larger spatial volume (volume V: see FIG. 4) than each opening hole 7A formed in the lid member 7, and each opening hole 7A is a resonator. 10 resonant tube portions are formed, and the respective recesses 6A2 communicating with these opening holes 7A constitute the volume portion of the resonator 10. Each of the resonators 10 is formed in such a state that its opening faces the installation space of the driving motor M disposed in the sheet body 1 described above.

  Next, the configuration of the resonator 20 formed outside the intermediate member 6 will be described. That is, as shown in FIGS. 1 to 3, the resonator 20 includes each opening hole 5 </ b> A formed in the above-described shield 5 and each recess formed in the outer surface 6 </ b> B of the intermediate member 6 communicating with these opening holes 5 </ b> A. 6B2. Specifically, each recess 6B2 is formed to form a spatial volume (volume V: see FIG. 4) wider than each opening hole 5A formed in the shield 5, and each opening hole 5A is formed in the resonator 20. Each of the recesses 6 </ b> B <b> 2 communicating with these opening holes 5 </ b> A constitutes a volume part of the resonator 20. Each of the resonators 20 is formed in such a state that its opening faces the vehicle interior space outside the seat body 1.

As shown in FIG. 4, each of the resonators 10 and 20 has an opening area (cross-sectional area) S of each opening hole 5A and 7A serving as a resonance tube portion, a tube length L of each opening hole 5A and 7A (resonance tube portion), The silencing frequency f0 at which the silencing effect can be exerted by the resonance effect is expressed by the following equation, depending on the volume V of the recesses 6A2 and 6B2 serving as the volume and the sound velocity c.

  Accordingly, the resonator 10 is configured by appropriately setting the opening area S of each of the opening holes 5A, 7A (resonance tube portion), the tube length L of each of the opening holes 5A, 7A (resonance tube portion), and the volume V of each of the recesses 6A2, 6B2. , 20 can be tuned to the frequency (target frequency) of the noise that is desired to be reduced, so that the noise at the target frequency can be reduced. Thus, according to the configuration of the vehicle seat of the present embodiment, the seat main body has a simple configuration in which the lid member 7 having the plurality of opening holes 7A is provided on the inner surface 6A of the intermediate member 6 provided as the energy absorbing member. A resonator 10 having an opening directed within 1 can be set. Therefore, these resonators 10 can satisfactorily exert the function of silencing the operating sound emitted from the drive motor M. In addition, the shield 5 is provided so as to cover the outer surface 6B of the waffle-shaped intermediate member 6, and a plurality of openings are formed in the shield 5 so that the respective recesses 6B2 formed on the outer surface 6B of the intermediate member 6 communicate with the outside. With a simple configuration in which the hole 5A is formed, the resonator 20 with the opening directed toward the outside of the sheet main body 1 can be formed. As described above, the resonator 20 that opens to the outside of the sheet main body 1 can be easily formed by using the configuration of the intermediate member 6 and the shield 5.

  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 the above-described embodiment, the resonators 10 and 20 are configured by using the configuration of the intermediate member 6 serving as the energy absorbing member disposed on the outer side portion of the seat body 1. An intermediate member having the same configuration may be disposed on the side portion of the first and second resonators, and a resonator may be formed inside and outside the intermediate member. Moreover, in the said Example, although the intermediate member 6 illustrated what was distribute | arranged between the side part of the outer side of the rear-end part of the seat cushion 3, and the side part of the shield 5 distribute | arranged to the outer side. The intermediate member may be disposed between the outer side portion of the intermediate portion in the front-rear direction of the seat cushion and the side surface portion of the shield disposed on the outer side, and the resonator may be appropriately set inside and outside the intermediate member. At this time, by providing the resonator so as to open in an arrangement space of another driving motor such as a driving motor for driving an electric slider device arranged between the seat cushion and the floor, The operating sound emitted from these other driving motors can be effectively silenced. The configuration in which the intermediate members 6 are provided between the side portions on the outside of the seat body 1 and the shield 5 disposed on the outside thereof to form the resonators 10 and 20 is applied to the seat cushion 3. The present invention is not limited to this and can be applied to the configuration of the seat back 2 in the same manner. The materials for the intermediate member, the lid member, and the shield are not necessarily resin, and other materials such as metal can be applied. Further, the lid member may be formed integrally with the intermediate member. Further, as shown in the above embodiment, the lid member is formed separately from the intermediate member and is joined separately later. And may be integrated with the intermediate member.

DESCRIPTION OF SYMBOLS 1 Seat main body 2 Seat back 3 Seat cushion 4 Electric reclining device 4R Rod 5 Shield 5A Opening hole 6 Intermediate member 6A Inner side surface 6A1 Standing wall part 6A2 Recessed part 6B Outer side face 6B1 Standing wall part 6B2 Recessed part 7A Opening hole 8A 1A Opening hole 8A Lever 8B Second lever 10 Resonator 20 Resonator M Driving motor S Open area L Tube length V Volume c Sound velocity f0 Silence frequency Bi screw BP Body panel

Claims (3)

A vehicle seat provided with a shield covering the lateral side surface of the seat body,
A plate-shaped intermediate member is disposed between the shield and the lateral side surface of the seat body covered by the shield,
The intermediate member has an outer surface with the surface facing the shield side and an inner surface with the surface facing the inner side of the seat body which is the opposite side, and at least the inner surface is formed in a lattice shape Due to the waffle shape in which a plurality of concave portions are surrounded by the standing wall portion and arranged in the in-plane direction, the standing wall portion is deformed and absorbs energy at the time of a side collision of the vehicle. and it consists to function as a member capable,
On the inner side surface of the intermediate member having the waffle shape, a lid member that covers each concave portion is formed by a member that is integral with or separate from the intermediate member. A vehicle seat, wherein a plurality of opening holes are formed so as to communicate with each other, and a resonator is formed by a configuration in which the opening holes and the recesses are communicated with each other. The vehicle seat according to claim 1,
The outer side surface of the intermediate member is also formed into a waffle shape in which a plurality of concave portions are surrounded by a standing wall portion formed in a lattice shape and are arranged in an in-plane direction, and the side surface of the intermediate member is The standing wall portion is configured to function as a member capable of absorbing energy by deformation, and the shield covers the concave portions formed on the outer surface of the intermediate member on the outer surface. A plurality of opening holes are formed through the shield so as to communicate with the recesses, and a resonator is formed by the configuration in which the opening holes and the recesses communicate with each other. The vehicle seat characterized by the above-mentioned. The vehicle seat according to claim 1 or 2,
A drive motor of an electric reclining device that adjusts the seat back back angle is arranged on the lateral side surface of the seat body, and the opening formed in the lid member in the installation space of the drive motor The vehicle seat characterized in that the resonator is disposed to face the hole and open to the inside of the seat body.

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