JP2021054197A - Seat for vehicle - Google Patents

Abstract

To provide a seat for a vehicle which can release occupants from noise caused by a sound generating source in a better manner.SOLUTION: A seat 11 for a vehicle includes: a cover member 18 which at least partially covers a seat frame 24a and covers a sound generating source 34; and a partition member 55 disposed between the sound generating source 34 and the cover member 18. The partition member 55 has: a plate-like part 57 which is disposed along a vertical surface while facing the sound generating source 34, forms a space Sm with the cover member 18, and has a plate-like shape; and a vertical wall part 58 which extends from an end of the plate-like part 57 to the sound generating source 34 side in a horizontal direction and forms a space Su with the cover member 18 and in which through holes 61 leading to the space Su are formed at positions facing the sound generating source 34.SELECTED DRAWING: Figure 7

Description

The present invention is between a seat frame, a sound source located outside the seat frame, a cover member that at least partially covers the seat frame to cover the sound source, and between the sound source and the cover member. The present invention relates to a vehicle seat including a partition member to be arranged.

Patent Document 1 discloses a vehicle seat including a reclining device that changes the front-rear position of the seat back with respect to the seat cushion. The reclining device includes an electric motor that is attached to a side frame that supports the seat cushion pad of the seat cushion. A cover member that covers the electric motor is attached to the side frame. On the outer surface of the cover member, an operating member operated by an occupant in controlling the reclining device is arranged.

Japanese Unexamined Patent Publication No. 2012-152348

An intermediate member facing the electric motor from the side is attached to the inside of the cover member. The intermediate member includes a resonator. The resonator has a resonance tube formed in a plate material that extends along the vertical plane while facing the electric motor. The sound transmitted horizontally from the electric motor can be reduced by the action of the resonator. However, with such a structure, the occupant sitting on the seat cushion cannot experience the silence as expected.

An object of the present invention is to provide a vehicle seat capable of better releasing occupants from noise generated from a sound source.

According to the first aspect of the present invention, a seat frame, a sound generation source arranged outside the seat frame, and a cover member that covers the seat frame at least partially to cover the sound generation source. In a vehicle seat including the sound generation source and a partition member arranged between the cover members, the partition member is arranged along a vertical surface while facing the sound generation source and is located between the cover member and the vehicle seat. A position that extends horizontally from the end of the plate-shaped portion to the sound generation source side to form a space between the plate-shaped plate-shaped portion forming the space and the cover member and faces the sound generation source. Provided is a vehicle seat having a vertical wall portion forming a through hole leading to the space.

According to the second side surface, in addition to the configuration of the first side surface, the seat frame includes a side frame that receives the seat cushion pad and supports the sound generation source, and the standing wall portion is more than the sound generation source. Includes the upper wall that is placed above.

According to the third side surface, in addition to the configuration of the first side surface, the seat frame includes a side frame that receives the seat cushion pad and supports the sound generation source, and the standing wall portion is more than the sound generation source. The horizontal length of the upper wall portion includes the upper wall portion located above and the lower wall portion located below the sound generation source, and the horizontal length of the upper wall portion is larger than the horizontal length of the lower wall portion.

According to the fourth side surface, in addition to the configuration of the first side surface, the seat frame includes a side frame that receives the seat cushion pad and supports the sound generation source, and the standing wall portion is more than the sound generation source. The upper wall portion located above and the lower wall portion located below the sound source are included, and the edge of the upper wall portion is horizontal with respect to the virtual vertical surface in contact with the edge of the lower wall portion. Move away from the plate-shaped portion in the direction.

According to the fifth side surface, in addition to the configuration of any one of the second to fourth side surfaces, the partition member is folded back from the edge of the upper wall portion and extends in a direction away from the sound generation source. Has a part.

According to the sixth side surface, in addition to the configuration of the fifth side surface, the folded portion is formed into a continuous body without holes.

According to the seventh side surface, in addition to the configuration of the fifth or sixth side surface, the edge of the folded portion comes into contact with the cover member without a gap.

According to the eighth side surface, in addition to the configuration of the fifth or sixth side surface, the edge of the folded portion is fixed to the cover member without a gap.

According to the ninth side surface, in addition to the configuration of any one of the first to eighth side surfaces, the vehicle seat is attached to the cover member at a position separated from the partition member in the front-rear direction of the vehicle, and is laterally attached. A load transmission member for transmitting the collision load from the vehicle to the seat frame is provided.

According to the tenth side surface, in addition to the configuration of the ninth side surface, the partition member is integrally formed with the load transmission member.

According to the eleventh side surface, in addition to the configuration of any one of the first to tenth side surfaces, the vehicle seat provides power to drive the seat frame in the front-rear direction along a slide rail fixed to the vehicle body frame. It includes a drive source to be generated, and an operation member that is attached to the outer surface of the cover member at a position separated from the partition member in the front-rear direction of the vehicle and is operated to control the drive source.

According to the first aspect, the sound transmitted horizontally from the sound source is blocked by the plate-shaped portion. The sound transmitted vertically from the sound source is blocked by the vertical wall. The sound leaking from the through hole into the space resonates in the space, and the sound leakage can be prevented. In this way, not only horizontal sound leakage but also vertical sound leakage can be prevented. The occupant sitting in the vehicle seat can be freed from the noise generated by the sound source.

According to the second aspect, since the sound transmitted upward from the sound source is blocked by the upper wall portion, the occupant sitting on the seat cushion can experience silence regardless of the sound generated from the sound source. ..

According to the third aspect, the sound transmitted upward from the sound source is blocked by the upright wall portion. The sound transmitted downward from the sound source is blocked by the lower wall. The generation of sound that is reflected from below and transmitted upward can be prevented. A occupant sitting on a seat cushion can experience silence regardless of the sound generated by the sound source.

According to the fourth aspect, the sound transmitted upward from the sound source is blocked by the upright wall portion. The sound transmitted downward from the sound source is blocked by the lower wall. The generation of sound that is reflected from below and transmitted upward can be prevented. A occupant sitting on a seat cushion can experience silence regardless of the sound generated by the sound source.

According to the fifth side surface, the rigidity of the upper wall portion can be increased by the action of the folded portion.

According to the sixth side surface, the sound leaking from the through hole into the space is blocked by the folded portion. The sound transmitted upward from the sound source can be efficiently reduced. A occupant sitting on a seat cushion can experience silence regardless of the sound generated by the sound source.

According to the seventh aspect, since the space formed between the upper wall portion and the cover member is closed, the sound transmitted upward from the sound source can be efficiently reduced. A occupant sitting on a seat cushion can experience silence regardless of the sound generated by the sound source.

According to the eighth aspect, since the space formed between the upper wall portion and the cover member is closed, the sound transmitted upward from the sound generation source can be efficiently reduced. A occupant sitting on a seat cushion can experience silence regardless of the sound generated by the sound source.

According to the ninth side surface, since the partition member and the load transmission member are arranged so as to be displaced in the front-rear direction when arranging the load transmission member, it is possible to avoid an increase in the overhang of the cover member toward the outside. The load transmitting member can satisfactorily transmit the collision load from the outside to the seat frame. The collision load can be well supported from the seat frame to the vehicle body frame.

According to the tenth aspect, an increase in the number of division points can be avoided in arranging the load transmission member and the partition member. The work of assembling vehicle seats can be streamlined.

According to the eleventh side surface, since the operation member and the partition member are arranged so as to be displaced in the front-rear direction when arranging the operation member, it is possible to avoid an increase in the overhang of the cover member toward the outside.

It is a perspective view which shows typically the whole structure of the vehicle seat which concerns on 1st Embodiment of this invention. It is a perspective view which shows the structure of a seat frame schematicly. It is a perspective view which shows typically the structure of the seat cushion pad and the seat back pad. It corresponds to the 4 arrow view of FIG. 3, and is the enlarged left side view of the seat cushion frame. It is an enlarged right side view of the left side cover. It is an enlarged perspective view of a partition member. FIG. 5 is an enlarged cross-sectional view taken along the line 7-7 of FIG. FIG. 5 is an enlarged right side view of a left side cover incorporated in a vehicle seat according to a second embodiment of the present invention, corresponding to FIG. FIG. 5 is an enlarged right side view of a left side cover incorporated in a vehicle seat according to a third embodiment of the present invention, corresponding to FIG. FIG. 5 is an enlarged right side view of a left side cover incorporated in a vehicle seat according to a fourth embodiment of the present invention, corresponding to FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, front / rear, left / right, and up / down refer to the directions seen from the occupant seated in the vehicle seat in the normal sitting posture (basic posture during driving).

FIG. 1 schematically shows the overall configuration of a vehicle seat according to the first embodiment of the present invention. The vehicle seat 11 is supported by, for example, a slide rail 13 coupled to a floor panel 12 that functions as one component of the monocock structure of the vehicle and a slide rail 13 that can be moved in the front-rear direction, and holds the occupant's buttocks and thighs. The seat cushion 14 that receives the seat cushion 14 is connected to the seat cushion 14 so that it can swing in the front-rear direction around the swing axis SX, and is supported by the seat back 15 that receives the back of the occupant and the upper end of the seat back 15. A headrest 16 for receiving the headrest 16 is provided. The seat cushion 14, the seat back 15, and the headrest 16 each have skin materials 14a, 15a, and 16a that individually wrap the inner pad. The skin materials 15a and 16a are brought into close contact with the outer surface of the pad following the recesses of the pad by the action of the hanging thread 17. Details of the pad will be described later. The vehicle seat 11 is configured for the left seat. When the vehicle seat 11 is used for the right seat, the left and right sides of the vehicle seat 11 may be interchanged.

The seat cushion 14 includes a side cover (cover member) 18. A first switch (operating member) 19a and a second switch (operating member) 19b are attached to the side cover 18. The first switch 19a is formed by a long knob in the front-rear direction. When the first switch 19a is operated forward, the seat cushion 14 and the seat back 15 move forward. When the first switch 19a is operated rearward, the seat cushion 14 and the seat back 15 move rearward. When the first switch 19a is operated upward, the seat cushion 14 and the seat back 15 move upward. When the first switch 19a is operated downward, the seat cushion 14 and the seat back 15 move downward. The second switch 19b is formed by a long knob in the vertical direction. When the second switch 19b is operated forward, the seat back 15 swings forward around the swing axis SX. When the second switch 19b is operated backward, the seat back 15 swings backward around the swing axis SX.

The headrest 16 is fixed to the headrest pillar 21 extending upward from the upper end of the seat back 15. The headrest pillar 21 is supported by the seat back 15 so as to be vertically displaceable in the axial direction. The height of the headrest 16 can be adjusted according to the displacement of the headrest pillar 21.

As shown in FIG. 2, the vehicle seat 11 includes a seat frame 23 that supports the pad. The seat frame 23 is connected to the seat cushion frame 24 that supports the pad of the seat cushion 14 and the seat cushion frame 24 that swings around the swing axis SX to support the pad of the seat back 15. And a base frame 26 that is guided by the slide rail 13 so as to be movable back and forth in the longitudinal direction and supports the seat cushion frame 24 on the slide rail 13. The seat cushion frame 24 is connected to the base frame 26 by a link mechanism 27. The link mechanism 27 is rotatably attached to the seat cushion frame 24 at one end that is rotatably coupled to the base frame 26 around the horizontal axis FH extending in the left-right direction and around the horizontal axis SH extending in the left-right direction parallel to the horizontal axis FH. A link member 28 having a other end to be coupled is provided. The link member 28 guides the vertical movement of the seat cushion frame 24 with respect to the base frame 26 around the horizontal axis FH.

The seat cushion frame 24 includes a side frame 24a extending side by side with each slide rail 13, a pan frame 24b connecting the side frames 24a at the front end of the seat cushion 14, and side frames 24a at the rear end of the seat cushion 14. It is provided with a connecting pipe 24c to be connected. A plurality of S springs (not shown) are arranged between the pan frame 24b and the connecting pipe 24c. The individual S springs have a zigzag shape and extend back and forth. The zigzag shape is formed by alternately combining a wire rod extending in the front-rear direction and a wire rod extending in the left-right direction.

An electric front-rear moving device 29 is attached to the base frame 26. The electric front-rear moving device 29 includes an electric motor (drive source) 31 supported by the base frame 26. The electric motor 31 generates power according to the supply of electric power. Electric power is supplied based on the operation of the first switch 19a. The power of the electric motor 31 causes the base frame 26 to move back and forth along the slide rail 13.

An electric vertical movement device 32 is attached to the side frame 24a of the seat cushion frame 24. The electric vertical movement device 32 includes an actuator 33 supported by the side frame 24a and connected to the link mechanism 27. The actuator 33 is arranged outside the side frame 24a, and has an electric motor (sound generation source) 34 that generates power according to the supply of electric power, and a side frame around the horizontal axis SH according to the power of the electric motor 34. It includes a transmission mechanism 35 that causes the link member 28 to rotate with respect to 24a. The transmission mechanism 35 includes, for example, a drive gear fixed to the drive shaft of the electric motor 34 and a driven gear fixed to the link member 28 around the horizontal axis SH, and is composed of a group of gears that mesh with each other in order. Electric power is supplied based on the operation of the first switch 19a. The power of the electric motor 34 causes the side frame 24a to move up and down around the horizontal axis FH.

In the seat cushion frame 24, a support shaft 36 is incorporated coaxially with the swing axis SX above and after the connecting pipe 24c. The support shaft 36 is formed from, for example, a hollow metal tube. The metal tube has high rigidity in the axial direction. The support shaft 36 is sandwiched between the left and right side frames 24a. The seat back frame 25 is supported on the support shaft 36.

The seat back frame 25 includes a sheet metal frame 25a connected to the inside of each side frame 24a by a support shaft 36, and an upper frame 25b connecting the upper ends of the sheet metal frame 25a to each other. The sheet metal frame 25a is formed from, for example, one metal plate. The upper frame 25b is formed from, for example, a metal tube. A headrest pillar guide 37 that supports the headrest pillar 21 so as to be slidable in the vertical direction is fixed to the upper frame 25b.

An electric reclining device 38 is attached to the sheet metal frame 25a of the seat back frame 25. The electric reclining device 38 includes an actuator 39 that is attached to the sheet metal frame 25a of the seat back frame 25 around the swing axis SX. The actuator 39 is formed by an electric motor 41 that generates power according to the supply of electric power, and a transmission mechanism 42 that converts the power of the electric motor 41 into a driving force around the swing axis SX. The electric motor 41 generates power according to the supply of electric power. Electric power is supplied based on the operation of the second switch 19b. The power of the electric motor 41 causes the seat back frame 25 to swing back and forth with respect to the seat cushion frame 24 around the swing axis SX.

As shown in FIG. 3, the seat cushion 14 further includes a seat cushion pad 44 supported by the seat cushion frame 24 and wrapped in the skin material 14a. The seat back 15 further includes a seat back pad 45 supported by the seat back frame 25 and wrapped in the skin material 15a. The seat cushion pad 44 and the seat back pad 45 are formed of an elastic material such as urethane foam.

As shown in FIG. 4, the left side frame 24a of the seat cushion frame 24 is formed by bending a vertical plate 46 extending in the front-rear direction along a vertical plane orthogonal to the swing axis SX and the upper and lower ends of the vertical plate 46. It has bending regions 47a and 47b that increase the rigidity of the vertical plate 46 by the effect of the bending region extending in the front-rear direction. In the vertical plate 46, the upper end and the lower end extend in the front-rear direction (longitudinal direction) in parallel with the slide rail 13. The actuator 33 is attached to the vertical plate 46. The bending regions 47a and 47b are formed in upper and lower pairs that sandwich a space in contact with the plate surface of the vertical plate 46. The front and rear ends of the bending region 47a are connected to the front and rear ends of the bending region 47b by rigid body regions 48a and 48b, respectively. In this way, the rigidity of the vertical plate 46 is increased. The rigid body regions 48a and 48b are formed by curved regions rising from the vertical plate 46.

A female coupler 49 is attached to the actuator 33. The female coupler 49 is arranged above the electric motor 34. A male coupler 52 connected to the harness 51 on the outside of the side frame 24a is fitted into the female coupler 49. The harness 51 passes through the opening 53 from the inside to the outside of the side frame 24a. The link mechanism 27 is rotatable around one end connected to the base frame 26 around the horizontal axis GH extending horizontally to the horizontal axis FH and around the horizontal axis TH extending horizontally along the horizontal axis GH. A link member 28b having an other end coupled to the seat cushion frame 24 is provided. The link member 28, in cooperation with the link member 28 described above, guides the vertical movement of the seat cushion frame 24 with respect to the base frame 26 around the horizontal axis FH.

As shown in FIG. 5, the partition member 55 is fixed to the inside of the left side cover 18 at a position facing the electric motor 34. The electric motor 31 and the control unit 56 of the electric motor 34 are fixed to the inner surface of the left side cover 18 at a position separated from the partition member 55 in the front-rear direction of the vehicle. The first switch 19a and the second switch 19b described above are connected to the control unit 56 from the outside of the left side cover 18. The control unit 56 controls the operation of the electric motor 31 according to the operation of the first switch 19a, and controls the operation of the electric motor 34 according to the operation of the second switch 19b.

As shown in FIG. 6, the partition member 55 has a plate-shaped plate-shaped portion 57 having a long rectangular contour in the front-rear direction, and a plate-shaped portion 57 continuous from the outer circumference of the plate-shaped portion 57 and curved from the plate-shaped portion 57. It has a vertical wall portion 58 that rises vertically from the surface of the portion 57. As shown in FIG. 7, the plate-shaped portion 57 is arranged along the vertical plane while facing the actuator 33 including the electric motor 34. A space Sm is formed between the plate-shaped portion 57 and the left side cover 18. The plate-shaped portion 57 is formed with one or more through holes 59 leading to the space Sm at positions facing the electric motor 34.

The standing wall portion 58 includes an upper standing wall portion 58a arranged above the electric motor 34 and a lower standing wall portion 58b arranged below the electric motor 34. The upper wall portion 58a and the lower wall portion 58b approach the side frame 24a beyond the virtual vertical surface Vp that is in contact with the electric motor 34 from the outside. Here, as shown in FIG. 6, the standing wall portion 58 is continuous along the outer circumference of the plate-shaped portion 57 without interruption. The vertical wall portion 58 extends inward (toward the actuator 33 side) in the horizontal direction while being curved from the plate-shaped portion 57, and surrounds a space in contact with the surface (inward facing surface) of the plate-shaped portion 57.

As shown in FIG. 7, the upper wall portion 58a forms a space Su with the left side cover 18. Space Su is continuous from space Sm. Space Su and space Sm form a resonance space. One or more through holes 61 leading to the space Su are formed in the upper wall portion 58a at positions facing the electric motor 34. The standing wall portion 58 other than the rising wall portion 58a is formed of a continuous body without holes. Here, the horizontal length Lu of the upper wall portion 58a is larger than the horizontal length Ld of the lower wall portion 58b. The edge of the upper wall portion 58a is moved away from the plate-shaped portion 57 in the horizontal direction with respect to the virtual vertical plane in contact with the edge of the lower wall portion 58b.

As shown in FIG. 6, the partition member 55 has a folded portion 62 that is folded back from the edge of the standing wall portion 58 and extends in a direction away from the actuator 33. The folded-back portion 62 is fixed to the inner surface of the left side cover 18 at the end edge without a gap over the entire circumference. However, the edge of the folded-back portion 62 may be in contact with at least the inner surface of the left side cover 18 without a gap over the entire circumference. The folded-back portion 62 is formed of a continuous body without holes. The folded-back portion 62 closes the space sandwiched between the side cover 18 and the partition member 55. In this way, the resonance space is partitioned.

As shown in FIG. 7, the left side cover 18 covers the side frame 24a from the outside. The actuator 33 is covered with the left side cover 18. The sound transmitted in the horizontal direction from the actuator 33 including the electric motor 34 is blocked by the plate-shaped portion 57. Sound enters the space Sm through the through hole 59. The sound leaking from the through hole 59 into the space Sm resonates in the space Sm, and the sound leakage can be prevented. Here, the through holes 59 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

The sound transmitted in the vertical direction from the actuator 33 is blocked by the upper wall portion 58a. The sound leaking from the through hole 61 to the space Su resonates in the space Su, and the sound leakage can be prevented. In this way, not only horizontal sound leakage but also vertical sound leakage can be prevented. The occupant sitting on the vehicle seat 11 can be released from the noise generated by the actuator 33. Since the sound transmitted upward from the actuator 33 is blocked by the upper wall portion 58a, the occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated from the actuator 33. Here, the through holes 61 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

In the vehicle seat 11 according to the present embodiment, the standing wall portion 58 includes an upper standing wall portion 58a located above the electric motor 34 and a lower standing wall portion 58b located below the electric motor 34. The horizontal length Lu of the portion 58a is larger than the horizontal length Ld of the lower wall portion 58b. The sound transmitted upward from the electric motor 34 is blocked by the upper wall portion 58a. The sound transmitted downward from the electric motor 34 is blocked by the lower wall portion 58b. The generation of sound that is reflected from below and transmitted upward can be prevented. The occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated by the electric motor 34.

Similarly, in the present embodiment, the edge of the upper wall portion 58a is moved away from the plate-shaped portion in the horizontal direction with respect to the virtual vertical plane in contact with the edge of the lower wall portion 58b. Therefore, the sound transmitted upward from the electric motor 34 is blocked by the upper wall portion 58a. The sound transmitted downward from the electric motor 34 is blocked by the lower wall portion 58b. The generation of sound that is reflected from below and transmitted upward can be prevented. The occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated by the electric motor 34.

In the present embodiment, the partition member 55 has a folded-back portion 62 that is folded back from the edge of the upper wall portion 58a and extends in a direction away from the electric motor 34. The rigidity of the upper wall portion 58a can be increased by the action of the folded portion 62. Moreover, since the folded-back portion 62 is formed in a continuous body without holes, the sound leaking from the through hole 61 into the space Su is blocked by the folded-back portion 62. The sound transmitted upward from the electric motor 34 can be efficiently reduced. The occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated by the electric motor 34.

In the vehicle seat 11 according to the present embodiment, the edge of the folded-back portion 62 comes into contact with the left side cover 18 without a gap. Since the space Su formed between the upper wall portion 58a and the left side cover 18 is closed, the sound transmitted upward from the electric motor 34 can be efficiently reduced. The occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated by the electric motor 34.

In the present embodiment, the edge of the folded-back portion 62 is fixed to the left side cover 18 without a gap. Since the space Su formed between the upper wall portion 58a and the left side cover 18 is closed, the sound transmitted upward from the electric motor 34 can be efficiently reduced. The occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated by the electric motor 34.

FIG. 8 schematically shows the structure of the left side cover 63 incorporated in the vehicle seat 11 according to the second embodiment of the present invention. A partition member 55 is fixed to the inside of the left side cover 63 at a position facing the electric motor 34. The electric motor 31 and the control unit 56 of the electric motor 34 are fixed to the inner surface of the left side cover 63 at a position separated from the partition member 55 in the front-rear direction of the vehicle. The first switch 19a and the second switch 19b described above are connected to the control unit 56 from the outside of the left side cover 63. The control unit 56 controls the operation of the electric motor 31 according to the operation of the first switch 19a, and controls the operation of the electric motor 34 according to the operation of the second switch 19b. The left side cover 63 is attached to the left side frame 24a of the vehicle seat 11 in the same manner as the left side cover 18 described above. Other than that, the structure of the left side cover 63 is the same as that of the left side cover 18 described above.

The load transmission member 64 is fixed to the inner surface of the left side cover 63 at a position separated from the partition member 55 in the front-rear direction of the vehicle. The load transmitting member 64 is arranged inside the left side cover 63 on an extension line of the swing axis SX of the seat back 15. The load transmitting member 64 is sandwiched between the left side frame 24a and the left side cover 18 on the extension of the support shaft 36.

The load transmitting member 64 includes a wall 64a that extends parallel to the swing axis SX and is arranged in a mesh pattern. The wall 64a partitions a plurality of small chambers inside the load transmitting member 64. The load transmitting member 64 can be molded from a high-strength resin material. The rigidity of the load transmitting member 64 is increased in the axial direction of the swing axis SX by the action of the wall 64a. The load transmission member 64 transmits the collision load acting on the left side cover 63 from the side of the vehicle seat 11 to the left side frame 24a. Since the side frame 24a is connected to the floor panel 12 through the slide rail 13, the collision load from the side can be supported by the rigid structure formed by the floor panel 12, the two side frames 24a and the support shaft 36. it can. The rigidity of the floor panel 12 can be increased by the action of the support shaft 36.

FIG. 9 schematically shows the structure of the left side cover 66 incorporated in the vehicle seat 11 according to the third embodiment of the present invention. A partition member 67 is fixed to the inside of the left side cover 66 at a position facing the electric motor 34. The partition member 67 is continuous from the plate-shaped plate-shaped portion 68 having a long rectangular contour in the front-rear direction and the outer circumference of the plate-shaped portion 68, and is curved from the plate-shaped portion 68 in the vertical direction from the surface of the plate-shaped portion 68. It has a standing wall portion 69 that stands up. Like the plate-shaped portion 57, the plate-shaped portion 68 is arranged along the vertical plane while facing the actuator 33 including the electric motor 34. A space Sm is formed between the plate-shaped portion 68 and the left side cover 66. The plate-shaped portion 68 is formed with one or more through holes 71 leading to the space Sm at positions facing the electric motor 34.

Like the standing wall portion 58, the standing wall portion 69 includes an upper standing wall portion 69a arranged above the electric motor 34 and a lower standing wall portion 69b arranged below the electric motor 34. The upper wall portion 69a and the lower wall portion 69b approach the side frame 24a beyond the virtual vertical surface Vp that is in contact with the electric motor 34 from the outside. Here, the standing wall portion 69 is continuous along the outer circumference of the plate-shaped portion 68 without interruption. The vertical wall portion 69 extends inward (toward the actuator 33 side) in the horizontal direction while being curved from the plate-shaped portion 68, and surrounds a space in contact with the surface (inward facing surface) of the plate-shaped portion 68.

The upper wall portion 69a forms a space Su with the left side cover 66, similarly to the upper wall portion 58a. Space Su is continuous from space Sm. Space Su and space Sm form a resonance space. One or more through holes 72 leading to the space Su are formed in the upper wall portion 58a at positions facing the electric motor 34. The standing wall portion 69 other than the rising wall portion 69a is formed of a continuous body without holes. Here, the horizontal length Lu of the upper wall portion 69a is larger than the horizontal length Ld of the lower wall portion 69b. The edge of the upper wall portion 69a is moved away from the plate-shaped portion 68 in the horizontal direction with respect to the virtual vertical plane in contact with the edge of the lower wall portion 69b.

Like the partition member 55, the partition member 67 has a folded-back portion 73 that is folded back from the edge of the standing wall portion 69 and extends in a direction away from the actuator 33. The folded-back portion 73 is fixed to the inner surface of the left side cover 66 at the end edge without a gap over the entire circumference. However, the edge of the folded-back portion 73 may be in contact with at least the inner surface of the left side cover 66 without a gap over the entire circumference. The folded-back portion 73 is formed of a continuous body without holes. The folded-back portion 73 closes the space sandwiched between the side cover 66 and the partition member 67. In this way, the resonance space is formed.

Like the left side cover 18, the left side cover 66 covers the side frame 24a from the outside. The actuator 33 is covered with the left side cover 66. The sound transmitted in the horizontal direction from the actuator 33 including the electric motor 34 is blocked by the plate-shaped portion 68. Sound enters the space Sm through the through hole 71. The sound leaking from the through hole 71 into the space Sm resonates in the space Sm, and the sound leakage can be prevented. Here, the through hole 71 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

The sound transmitted in the vertical direction from the actuator 33 is blocked by the upper wall portion 69a. The sound leaking from the through hole 72 to the space Su resonates in the space Su, and the sound leakage can be prevented. In this way, not only horizontal sound leakage but also vertical sound leakage can be prevented. The occupant sitting on the vehicle seat 11 can be released from the noise generated by the actuator 33. Since the sound transmitted upward from the actuator 33 is blocked by the upper wall portion 69a, the occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated from the actuator 33. Here, the through holes 72 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

The electric motor 31 and the control unit 56 of the electric motor 34 are fixed to the inner surface of the left side cover 66 at a position separated from the partition member 67 in the front-rear direction of the vehicle. The first switch 19a and the second switch 19b described above are connected to the control unit 56 from the outside of the left side cover 66. The control unit 56 controls the operation of the electric motor 31 according to the operation of the first switch 19a, and controls the operation of the electric motor 34 according to the operation of the second switch 19b. The left side cover 66 is attached to the left side frame 24a of the vehicle seat 11 in the same manner as the left side cover 18 described above. Other than that, the structure of the left side cover 66 is the same as that of the left side cover 18 described above.

The load transmission member 74 is fixed to the inner surface of the left side cover 66 at a position separated from the partition member 55 in the front-rear direction of the vehicle. The load transmitting member 74 is arranged inside the left side cover 66 on an extension line of the swing axis SX of the seat back 15. The load transmitting member 74 is sandwiched between the left side frame 24a and the left side cover 66 on the extension of the support shaft 36.

The load transmitting member 74 is continuous with the partition member 67. That is, the load transmission member 74 is integrated with the partition member 67. The partition member 67 and the load transmission member 74 can be formed from a high-strength resin material as one member. The rigidity of the load transmitting member 74 is increased in the axial direction of the swing axis SX by the action of the wall 74a. The load transmission member 74 transmits the collision load acting on the left side cover 66 from the side of the vehicle seat 11 to the left side frame 24a. Since the side frame 24a is connected to the floor panel 12 through the slide rail 13, the collision load from the side can be supported by the rigid structure formed by the floor panel 12, the two side frames 24a and the support shaft 36. it can. The rigidity of the floor panel 12 can be increased by the action of the support shaft 36.

FIG. 10 schematically shows the structure of the left side cover 76 incorporated in the vehicle seat 11 according to the fourth embodiment. A partition member 77 is fixed to the inside of the left side cover 76 at a position facing the electric motor 34. The partition member 77 is formed in the first resonance space 81 connected to the outer space by a through hole 79 formed in the plate wall 78 extending along the vertical plane while facing the actuator 33, and the plate wall 82 facing the left side cover 76. A second resonance space 84 connected to the outer space by the through hole 83 may be provided. The noise generated from the actuator 33 can be reduced in the first resonance space 81. Road noise reflected from the road surface can be reduced in the second resonance space 84. The occupant sitting on the seat cushion 14 can experience good silence regardless of the sound generated by the electric motor 34 and the road noise during traveling.

The partition member 77 has a vertical wall portion 85 that is continuous from the outer periphery of the board wall 78 and rises vertically from the surface of the board wall 78 while being curved from the board wall 78. The plate wall 78 is arranged along the vertical plane while facing the actuator 33 including the electric motor 34, similarly to the plate-shaped portion 57. Like the standing wall portion 58, the standing wall portion 85 includes an upper standing wall portion 85a arranged above the electric motor 34 and a lower standing wall portion 85b arranged below the electric motor 34. The upper wall portion 85a and the lower wall portion 85b approach the side frame 24a beyond the virtual vertical surface Vp that contacts the electric motor 34 from the outside. Here, the standing wall portion 85 is continuous along the outer circumference of the plate wall 78 without interruption. The vertical wall portion 85 extends inward (toward the actuator 33 side) in the horizontal direction while being curved from the board wall 78, and surrounds a space in contact with the surface (inward facing surface) of the board wall 78.

The upper wall portion 85a forms a space Su with the left side cover 76, similarly to the upper wall portion 58a. The space Su is continuous from the first resonance space 81. The space Su and the first resonance space 81 form one resonance space. One or more through holes 86 leading to the space Su are formed in the upper wall portion 85a at a position facing the electric motor 34. The standing wall portion 85 other than the rising wall portion 85a is formed of a continuous body without holes. Here, the horizontal length Lu of the upper wall portion 85a is larger than the horizontal length Ld of the lower wall portion 85b. The edge of the upper wall portion 85a is horizontally farther from the board wall 78 than the virtual vertical plane in contact with the edge of the lower wall portion 85b.

The partition member 77, like the partition member 55, has a folded portion 87 that is folded back from the edge of the standing wall portion 85 and extends in a direction away from the actuator 33. The folded-back portion 87 is fixed to the inner surface of the left side cover 76 at the end edge without a gap over the entire circumference. However, the edge of the folded-back portion 87 may be in contact with at least the inner surface of the left side cover 76 without a gap over the entire circumference. The folded-back portion 87 is formed of a continuous body without holes. The folded-back portion 87 closes the space sandwiched between the left side cover 76 and the partition member 77. In this way, the resonance space is formed.

Like the left side cover 18, the left side cover 76 covers the side frame 24a from the outside. The actuator 33 is covered with the left side cover 76. The sound transmitted in the horizontal direction from the actuator 33 including the electric motor 34 is blocked by the plate wall 78. The sound enters the first resonance space 81 through the through hole 79. The sound leaking from the through hole 79 to the first resonance space 81 resonates in the first resonance space 81, and the sound leakage can be prevented. Here, the through holes 79 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

The sound transmitted in the vertical direction from the actuator 33 is blocked by the upper wall portion 85a. The sound leaking from the through hole 86 into the space Su (resonance space) resonates in the space Su, and the sound leakage can be prevented. In this way, not only horizontal sound leakage but also vertical sound leakage can be prevented. The occupant sitting on the vehicle seat 11 can be released from the noise generated by the actuator 33. Since the sound transmitted upward from the actuator 33 is blocked by the upper wall portion 85a, the occupant sitting on the seat cushion 14 can experience silence regardless of the sound generated from the actuator 33. Here, the through hole 86 may be formed as a plurality of through holes having different diameters. Sound can be reduced at a unique frequency for each individual diameter.

11 ... Vehicle seat, 12 ... Body frame (floor panel), 13 ... Slide rail, 18 ... Cover member (side cover), 19a ... Operation member (first switch), 19b ... Operation member (second switch), 23 ... Seat frame, 24a ... Side frame, 31 ... Drive source (electric motor), 34 ... Sound source (electric motor), 44 ... Seat cushion pad, 55 ... Partition member, 57 ... Plate-shaped part, 58 ... Standing wall part, 58a ... Upper wall part, 58b ... Lower wall part, 61 ... Through hole, 62 ... Folded part, 63 ... Cover member (left side cover), 64 ... Load transmission member, 66 ... Cover member (left side cover), 67 ... Partition member, 68 ... Plate-shaped part, 69 ... Standing wall part, 69a ... Upper wall part, 69b ... Lower standing wall part, 72 ... Through hole, 73 ... Folded part, 74 ... Load transmission member, 76 ... Cover member (left side cover) ), 77 ... Partition member, 78 ... Plate-shaped part (plate wall), 85 ... Standing wall part, 85a ... Upper standing wall part, 85b ... Lower standing wall part, 86 ... Through hole, 87 ... Folded part, Ld ... (Lower standing wall part) ) Horizontal length, Lu ... Horizontal length (of the upper wall part), Sm ... Space (contacting the plate-shaped part), Su ... Space (contacting the upper wall part).

Claims (11)

Seat frame (23) and
A sound source (34) arranged outside the seat frame (23) and
A cover member (18; 63; 66; 76) that at least partially covers the seat frame (23) and covers the sound source (34).
In a vehicle seat (11) including a partition member (55; 67; 77) arranged between the sound source (34) and the cover member (18; 63; 66; 76), the partition member ( 55; 67; 77)
A plate-shaped plate-shaped portion (57;) that is arranged along the vertical plane while facing the sound source (34) and forms a space (Sm) with the cover member (18; 63; 66; 76). 68; 78) and
It extends horizontally from the end of the plate-shaped portion (57; 68; 78) toward the sound source (34) side, and forms a space (Su) with the cover member (18; 63; 66; 76). The vehicle is characterized by having a vertical wall portion (58; 69; 85) forming a through hole (61; 72; 86) leading to the space (Su) at a position facing the sound generation source (34). Sheet for. In the vehicle seat according to claim 1, the seat frame (23) includes a side frame (24a) that receives the seat cushion pad (44) and supports the sound generation source (34), and the standing wall portion (23). 58; 69; 85) is a vehicle seat including an upright wall portion (58a; 69a; 85a) arranged above the sound source (34). In the vehicle seat according to claim 1, the seat frame (23) includes a side frame (24a) that receives the seat cushion pad (44) and supports the sound generation source (34), and the standing wall portion (23). The 58; 69; 85) includes an upper wall portion (58a; 69a; 85a) located above the sound source (34) and a lower wall portion (58a; 69a; 85a) located below the sound source (34). 58b; 69b; 85b), and the horizontal length (Lu) of the upper wall portion (58a; 69a; 85a) is from the horizontal length (Ld) of the lower wall portion (58b; 69b; 85b). Vehicle seats that are also large. In the vehicle seat according to claim 1, the seat frame (23) includes a side frame (24a) that receives the seat cushion pad (44) and supports the sound generation source (34), and the vertical wall portion (23). The 58; 69; 85) includes an upper wall portion (58a; 69a; 85a) located above the sound source (34) and a lower wall portion (58a; 69; 85a) located below the sound source (34). 58b; 69b; 85b), and the edge of the upper wall portion (58a; 69a; 85a) is horizontal with respect to the virtual vertical surface in contact with the edge of the lower wall portion (58b; 69b; 85b). A vehicle seat characterized by moving away from the plate-shaped portion (57; 68; 78). In the vehicle seat according to any one of claims 2 to 4, the partition member (55; 67; 77) is folded back from the edge of the rising wall portion (58a; 69a; 85a), and the partition member (55; 67; 77) is folded back from the edge. A vehicle seat characterized by having a folded portion (62; 73; 87) extending in a direction away from the sound source (34). The vehicle seat according to claim 5, wherein the folded-back portion (62; 73; 87) is formed in a continuous body without holes. The vehicle according to claim 5 or 6, wherein the edge of the folded-back portion (62; 73; 87) comes into contact with the cover member (18; 63; 66; 76) without a gap. Sheet for. The vehicle seat according to claim 5 or 6, wherein the edge of the folded-back portion (62; 73; 87) is fixed to the cover member (18; 63; 66; 76) without a gap. Vehicle seat. In the vehicle seat according to any one of claims 1 to 8, the vehicle seat is attached to the cover member (63; 66) at a position separated from the partition member (55; 67) in the front-rear direction of the vehicle, and is laterally attached. A vehicle seat comprising a load transmitting member (64; 74) for transmitting a collision load from the vehicle to the seat frame (23). The vehicle seat according to claim 9, wherein the partition member (67) is integrally formed with the load transmission member (74). In the vehicle seat according to any one of claims 1 to 10.
A drive source (31) that generates power to drive the seat frame (23) in the front-rear direction along a slide rail (13) fixed to the vehicle body frame (12).
An operating member (19a) that is attached to the outer surface of the cover member (18; 63; 66) at a position separated from the partition member (55; 67) in the front-rear direction of the vehicle and is operated to control the drive source (31). 19b) and
A vehicle seat characterized by being provided.

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