JP2016105868A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat that can efficiently propagate desired vibration to an upper body of an occupant seating on a seat cushion from a seat back.SOLUTION: In the vehicle seat, when a vibration unit in the seat back is operated while the upper body of the occupant seating on the seat cushion is supported by the seat back, the vibration generated by the vibration unit is directly propagated to whole of a pressure receiving member 30 to efficiently propagate the vibration to the upper body of the occupant from the pressure receiving member 30.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat including at least a seat cushion and a seat back, and more particularly to a vehicle seat capable of transmitting vibration from a seat back to an upper body of an occupant seated on the seat cushion.

  As a vehicle seat provided with a seat cushion and a seat back, a vehicle seat in which a vibrator for applying massage vibration to the upper body of an occupant seated on the seat cushion is incorporated in the seat back is generally known (for example, Patent Document 1).

  Here, in the vehicle seat described in Patent Document 1, the upper and lower reinforcing frames are stretched from side to side with respect to the seat back frame constituting the skeleton of the seat back, and the frame body is clipped on the upper and lower reinforcing frames. A vibrator is attached to the frame body via a spring member.

Japanese Utility Model Publication No. 61-196741

By the way, in the vehicle seat described in Patent Document 1, it is the frame that supports the occupant's upper body from the rear, but the vibrator (vibration unit) is held by the frame via the spring member. The vibration of the vibrator may be absorbed by the spring member before it is transmitted to the frame, and there is a concern that the vibration transmission effect on the occupant's upper body is low.
Moreover, there is a problem that the number of parts increases by using a dedicated spring member for attaching the vibrator to the frame.

  Further, when the vibration unit interferes with surrounding members, abnormal noise may be generated or the occupant may feel uncomfortable, so it is desirable that the vibration unit does not easily interfere with surrounding members.

  The present invention has been made in view of the technical background as described above, and can efficiently transmit desired vibrations from the seat back to the upper body of the occupant seated on the seat cushion. It is an object of the present invention to provide a vehicle seat that does not easily interfere with surrounding members and can reduce the number of parts.

  A vehicle seat of the present invention that solves the above-described problem is a vehicle seat that includes at least a seat cushion and a seat back, and the seat back is disposed inside a seat back frame that constitutes a skeleton and the seat back frame. A pressure receiving member that supports the upper body of the occupant, an elastic support member that elastically supports the pressure receiving member on the seat back frame, and a covering member that covers the seat back frame and the pressure receiving member, and is seated on the seat cushion When a backward movement load acts on the seat back from the occupant's upper body, the pressure receiving member moves backward to sink the occupant's upper body into the seat back, and the pressure receiving member is provided with a vibration unit. It is characterized by that.

The vehicle seat according to the present invention is configured to receive a load from the occupant's upper body and to sink the occupant's upper body into the seat back when a backward movement load acts on the seat back. A vibration unit is attached to a member to which sufficient pressure is applied from the upper body. Therefore, if the vibration unit operates while the upper body of the occupant seated on the seat cushion is supported by the seat back, the vibration generated by the vibration unit is directly transmitted to the entire pressure receiving member that receives the load from the upper body of the occupant. Then, it is efficiently transmitted from the pressure receiving member to the occupant's upper body through the covering member. Further, since the spring member is not necessary for attaching the vibration unit to the pressure receiving member, the number of parts can be reduced.
The covering member of the present invention includes a cushion pad, a skin provided outside the cushion pad, a back cover that covers the back side of the seat, and the like.

  In the vehicle seat according to the present invention, the interference between the vibration unit and the covering member is provided between the vibration unit and the covering member so that the vibration unit and the covering member are stably operated by suppressing the interference between the vibration unit and the covering member. It is preferable that an interference suppressing member for suppressing the above is provided. The interference suppression member can be a first cover member that covers the vibration unit.

  In the vehicle seat of the present invention, when the concave portion is formed integrally with the pressure receiving member, and at least a part of the vibration unit is accommodated in the concave portion, the rigidity of the pressure receiving member is increased, and a part of the vibration unit and the covering member are provided. Interference is suppressed. Further, the vehicle seat can be made compact by utilizing the space in the recess.

  Here, when the vibration unit is arranged behind the pressure receiving surface of the pressure receiving member, in other words, when the recess protrudes from the back side of the pressure receiving member and the vibration unit is accommodated in the recess, the occupant There is no sense of incongruity when the vibration unit comes into contact with the upper body.

  The vibration unit can employ various vibration methods such as an electromagnetic method, an eccentric cam method, and a low frequency speaker method. For example, it can be set as the vibration motor by which the eccentric weight was attached to the rotating shaft extended from the motor main body. In this case, the first cover member that covers the vibration motor has a motor cover portion that covers the motor body, and a weight cover portion that projects outward from the motor cover portion and covers the rotation region of the eccentric weight. preferable.

  In the vehicle seat of the present invention, the pressure receiving member has a recess opening forward, the mounting bracket for the pressure receiving member is attached to the vibration unit, and the mounting bracket receives the pressure in a state where the vibration unit is housed in the recess of the pressure receiving member. If it is attached around the concave portion of the member, it is preferable because interference between the vibration unit and the covering member is suppressed. In this case, since a separate interference suppression member for suppressing interference between the vibration unit and the covering member is not necessary, the number of components is reduced.

  Moreover, when the 2nd cover member which covers the recessed part in which a vibration unit is accommodated from the outer side of a mounting bracket is provided, while an interference with a vibration unit and a covering member is suppressed, it is suppressed that a dust enters a recessed part. .

  Furthermore, when the mounting member for mounting the mounting bracket is insert-molded around the recess of the pressure receiving member, the mounting work of the mounting bracket becomes easy, and the rigidity of the pressure receiving member is increased.

  Further, when the vibration unit is disposed at a position where it does not overlap with the elastic support member, the elastic support member does not get in the way when the vibration unit is assembled, so that the assembly workability of the vibration unit is improved.

  Furthermore, when the elastic support member is composed of two linear members arranged above and below the vibration unit, the vibration of the vibration unit is easily transmitted to the two linear members.

  Here, when the elastic support member is provided so as to connect the left and right portions of the seat back frame, and the holding portion of the pressure receiving member that holds the elastic support member is arranged side by side with the vibration unit, the vibration of the pressure receiving member is greatly increased. Since the pressure receiving member holds the elastic support member in the portion where the pressure occurs, the generation of noise due to the interference between the pressure receiving member and the linear member is suppressed when the vibration unit vibrates.

  In the first aspect of the present invention, when the vibration unit operates while the upper body of the occupant seated on the seat cushion is supported by the seat back, the vibration generated by the vibration unit is directly transmitted to the entire pressure receiving member, It is efficiently transmitted from the pressure receiving member to the occupant's upper body through the covering member. Therefore, according to the first aspect of the present invention, the desired vibration generated by the vibration unit can be efficiently transmitted from the seat back to the upper body of the occupant seated on the seat cushion. Furthermore, since a spring member for attaching the vibration unit to the pressure receiving member is unnecessary, the number of parts can be reduced.

  According to the second aspect of the present invention, since the interference suppression member for suppressing the interference between the vibration unit and the covering member is provided between the vibration unit and the covering member, the vibration unit operates stably. Therefore, according to the second aspect of the invention, the vibration unit can be stably operated.

  According to the third aspect of the invention, since the interference suppressing member is configured by the first cover member that covers the vibration unit, the vibration unit can be operated more stably while the structure is simple.

  According to the fourth aspect of the present invention, since the concave portion is integrally formed in the pressure receiving member and at least a part of the vibration unit is accommodated in the concave portion, the rigidity of the pressure receiving member can be increased, and the vibration unit Interference between a part of the cover and the covering member can be suppressed. Further, the vehicle seat can be made compact by utilizing the space in the recess.

  According to the invention described in claim 5, since the vibration unit is arranged behind the pressure receiving surface of the pressure receiving member, it is possible to eliminate the uncomfortable feeling that the vibration unit contacts the upper body of the passenger supported by the seat back. it can.

  According to the sixth aspect of the present invention, the motor cover portion of the first cover member covers the motor main body of the vibration unit, and the weight cover portion of the first cover member projects outward from the motor cover portion, so that the vibration unit Since the rotation area of the eccentric weight is covered, it is possible to suppress interference with the covering member even if the eccentric weight vibrates while reducing the size of the first cover member.

  According to the seventh aspect of the present invention, the vibration unit is accommodated in the recess opening forward of the pressure receiving member, and the mounting bracket of the vibration unit is attached around the recess of the pressure receiving member in this state. The vibration unit can be stably operated by suppressing the interference with the member, and a separate interference suppression member for suppressing the interference between the vibration unit and the covering member can be eliminated.

  According to the eighth aspect of the invention, since the second cover member that covers the recess in which the vibration unit is accommodated from the outside of the mounting bracket is provided, the vibration unit and the covering member are suppressed from interfering with each other. While being able to operate stably, it can suppress that dust enters a recessed part.

  According to the ninth aspect of the present invention, since the mounting member for mounting the mounting bracket is insert-molded around the concave portion of the pressure receiving member, the mounting work of the mounting bracket can be easily performed. The rigidity of the member can be increased and the vibration of the vibration unit can be efficiently transmitted to the entire pressure receiving member.

  According to the invention described in claim 10, since the vibration unit is disposed at a position not overlapping the elastic support member, the elastic support member does not get in the way when the vibration unit is assembled, and the assembly workability of the vibration unit is improved. Can be improved.

  According to the eleventh aspect of the present invention, since the elastic support member is composed of two linear members disposed above and below the vibration unit, the vibration of the vibration unit is divided into the two linear members. It is easy to communicate.

  According to the invention described in claim 12, the elastic support member is provided so as to connect the left and right portions of the seat back frame, and the holding portion of the pressure receiving member that holds the elastic support member is arranged side by side with the vibration unit. Therefore, when the vibration unit vibrates, the generation of abnormal noise due to the interference between the pressure receiving member and the linear member can be suppressed.

1 is a perspective view of a vehicle seat showing an embodiment of a vehicle seat according to the present invention. FIG. 2 is a front perspective view of a seat cushion frame and a seat back frame built in the vehicle seat shown in FIG. 1. It is a rear view of the seat back frame shown in FIG. It is a front side perspective view of the pressure receiving member shown in FIG. FIG. 5 is a rear perspective view of the pressure receiving member shown in FIG. 4. FIG. 3 is an exploded perspective view seen from the front side of the pressure receiving member and the second cover member shown in FIG. 2. FIG. 7 is an enlarged perspective view of the vibration unit shown in FIG. 6. FIG. 6 is a partial enlarged perspective view showing a vibration unit and a first cover member attached to a back surface of a pressure receiving member as viewed from the left side as a modification of the vehicle seat according to the embodiment. FIG. 9 is a partially enlarged perspective view showing the vibration unit and the first cover member shown in FIG. 8 as viewed from the right side. FIG. 6 is a partially enlarged perspective view showing a vibration unit and a first cover member attached laterally on the back surface of a pressure receiving member as viewed from the right side as another modified example of the vehicle seat of one embodiment.

  Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to the accompanying drawings. For example, as shown in FIG. 1, the vehicle seat according to the embodiment is configured as a vehicle seat S disposed in a driver's seat of an automobile. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3 in which a cushion pad made of a cushion material such as urethane foam is covered with an outer skin such as synthetic leather or fabric. The cushion pad, the skin, and the back cover that covers the back of the vehicle seat S in this skin are examples of the covering member. In the following description, the front-rear and left-right directions are directions viewed from the occupant assuming a state in which the occupant is seated on the seat cushion S1.

  As shown in FIG. 2, the seat cushion S1 incorporates a seat cushion frame F1 constituting the skeleton, and the seat back S2 incorporates a seat back frame F2 constituting the skeleton. Although not shown, the headrest S3 also incorporates a headrest frame that constitutes the skeleton thereof.

  The seat cushion frame F1 is press-molded into a substantially U shape with a rear portion opened in plan view, and has a plate-like front frame 11 at the front portion. The rear portions of the cushion side frames 12, 12 extending rearward from the left and right portions of the front frame 11 are connected to the left and right via a rear connection pipe 13. Then, four seat cushion springs 14 are stretched side by side between the rear connecting pipe 13 and the front frame 11. Such a seat cushion frame F1 is provided on the floor of the driver's seat so that the position can be adjusted in the front-rear direction via the slide rail SL.

  On the other hand, the seat back frame F2 is welded in a state where the upper pipe frame 21 formed by bending a pipe material into an inverted U shape with the lower portion opened in a front view and the left and right lower portions of the upper pipe frame 21 are held. The left and right backside frames 22 and 22 are connected to each other and a lower frame 23 is connected between the lower ends of the backside frames 22 and 22, and these are framed in a vertically long rectangle. And the lower part of such a seat back frame F2 is rotatably connected to the rear end part of the left and right cushion side frames 12, 12 of the seat cushion frame F1 via a reclining unit RU, so that the seat back The frame F2 can be tilted back and forth.

  A pair of left and right support brackets 24 for mounting a pair of left and right headrest stays (not shown) protruding from the lower portion of the headrest S3 shown in FIG. 1 are provided on the horizontal portion of the upper part of the upper pipe frame 21 of the seat back frame F2. 24 is fixed by welding. Further, between the upper portions of the left and right vertical portions of the upper frame 21, a reinforcing member 25 is installed on the upper portion of the pressure receiving member 30. The reinforcing member 25 is formed by bending a rod into a symmetrical shape substantially along the plane of the seat back frame F2.

  Here, as shown in FIGS. 2 and 3, a pressure receiving member 30 for supporting the upper body of the occupant seated on the seat cushion S <b> 1 so as to be elastically retractable is provided inside the frame-like seat back frame F <b> 2. Is arranged. In order to elastically support the pressure receiving member 30 in the front-rear direction, an upper support wire 26 as an elastic support member is stretched between the lower portions of the left and right vertical portions of the upper frame 21, and the left and right backside frames A lower support wire 27 as an elastic support member is stretched between 22 and 22. These upper support wire 26 and lower support wire 27 are linear members obtained by bending a wire such as a piano wire having spring elasticity into a bilaterally symmetric shape substantially along the plane of the seat back frame F2. Here, it is desirable to provide the upper support wire 26 or the lower support wire 27 so as to be bent away from the vibration unit 50, because the workability of attaching the upper support wire 26, the lower support wire 27 or the vibration unit 50 is improved.

  The upper support wire 26 is bent downward so that the left and right ends are along the left and right vertical portions of the upper frame 21. Then, the left and right end portions of the upper support wire 26 are respectively held by the left and right vertical portions of the upper frame 21 while being held by the support tongues 28 and 28 which are welded and fixed to the left and right vertical portions of the upper frame 21, respectively. Connected and supported. The upper support wire 26 is located at a position where the intermediate portion supporting the pressure receiving member 30 is lower than both ends connected to and supported by the left and right support tongues 28, 28. It is bent in a mountain shape in the vertical direction so that the central support portion 26B is higher than 26A.

  The left and right ends of the lower support wire 27 are connected to toggle support mechanisms (only the right side is shown in FIG. 2) 40 installed on the inner side surfaces of the left and right backside frames 22 and 22, respectively. The lower support wire 27 is located at a position where the intermediate portion supporting the pressure receiving member 30 is lower than both ends connected to the toggle support mechanism 40, and in the middle portion, the support portions in the middle of the support portions 27A and 27A on both sides. The portion 27B is bent in a mountain shape in the vertical direction so as to be at a low position.

  The toggle support mechanism 40 includes a swing link member that can swing backward while overcoming a thought point (a point in the mechanism where movement is not determined) while resisting the tension of the tension coil spring. The left and right ends of the lower support wire 27 are connected to the swing link member. Here, the tension of the tension coil spring of the toggle support mechanism 40 is such that when the backward movement load of a predetermined value or more is applied to both ends of the lower support wire 27, the swing link member can swing back beyond the thought point. Such an appropriate tension is set.

  Here, the pressure receiving member 30 is a plate member made of resin for supporting the upper body of the occupant seated on the seat cushion S1 so as to be able to move backward and elastically. For example, the shape as shown in FIGS. That is, it is formed into a substantially pentagonal shape with the apex facing downward. On the rear surface (back surface) of the pressure receiving member 30, hook-shaped holding portions 30A and 30A that are engaged with the left and right support portions 26A and 26A of the upper support wire 26 shown in FIG. A hook-shaped holding portion 30B that engages with the central support portion 26B from below is integrally formed. Similarly, on the rear surface (back surface) of the pressure receiving member 30, hook-shaped holding portions 30C and 30C that engage with the left and right support portions 27A and 27A of the lower support wire 27 shown in FIG. A hook-shaped holding portion 30 </ b> D that engages with the central support portion 27 </ b> B of 27 from below is integrally formed.

  Here, as shown in FIGS. 6 and 7, the pressure receiving member 30 is integrally formed with a housing recess 30 </ b> E for housing the vibration unit 50. The housing recess 30E opens to the front surface (front surface) of the pressure receiving member 30 and bulges to the rear surface (rear surface). The shape of the front view is a horizontally long rectangle. Then, nuts N as an attachment member for attaching a mounting bracket 54 to be described later are embedded and embedded in four corners of the rectangular opening of the receiving recess 30E of the pressure receiving member 30. The bottom portion of the housing recess 30E functions as a first cover member (interference suppression member), and suppresses interference between the vibration unit 50, the cushion pad that covers the rear side of the seat back frame F2, and the vibration unit 50. ing.

  The vibration unit 50 includes a drive motor (actuator) 51, a vibration weight 53 attached to a rotating shaft 52 of the drive motor 51, and a mounting bracket 54 attached to the drive motor 51. The vibration weight 53 is formed by stacking a plurality of fan-shaped plates and integrated into a fan-shaped block shape in front view, and the rotation shaft 52 is attached to a position eccentric from the center of gravity so that the rotation shaft 52 rotates. As a result, vibration of a predetermined frequency is generated. The vibration generated by the vibration unit 50 can be set to an appropriate frequency that gives the occupant seated on the seat cushion S1 a massage effect, an awakening effect, and the like by changing the rotation speed of the drive motor 51. In addition, the controller which controls the action | operation of the vibration unit 50 can be installed in the driver's seat ahead of the vehicle seat S, for example.

  The mounting bracket 54 has a bolt insertion hole 54A that matches at least three of the four nuts N of the pressure receiving member 30 shown in FIG. Here, in this embodiment, the cover plate 55 attached to the front surface (front surface) of the pressure receiving member 30 together with the mounting bracket 54 is provided as a second cover member (interference suppression member). The cover plate 55 is a rectangular plate member having a size covering the receiving recess 30E of the pressure receiving member 30, and bolt insertion holes 55A that match the four nuts N are formed at the four corners. Such a cover plate 55 is placed on the front surface (front surface) of the pressure receiving member 30 by four bolts B screwed into the four nuts N of the pressure receiving member 30 through the bolt insertion holes 55A and the bolt insertion holes 54A of the mounting bracket 54. It is attached and covers the accommodation recess 30E. Thereby, the vibration unit 50 is attached to the pressure receiving member 30 without the spring member interposed therebetween. For this reason, the number of parts can be reduced.

  Then, the effect is demonstrated about the vehicle seat S comprised as one Embodiment of the vehicle seat which concerns on this invention. In the vehicle in which the vehicle seat S shown in FIG. 1 is arranged in the driver's seat, during normal operation when the pressing force acting on the seat back S2 from the upper body of the occupant seated on the seat cushion S1 is within a predetermined range, or when the vehicle is stopped At times, the upper support wire 26 and the lower support wire 27 shown in FIGS. 2 and 3 are elastically deformed rearward moderately, so that the upper body of the occupant is appropriately submerged in the seat back S2 and held in a stable driving posture. Is done.

  In the state where the upper body of the occupant seated on the seat cushion S1 of the vehicle seat S is appropriately sunk into the seat back S2, for example, an operation of a controller (not shown) installed in the driver seat in front of the vehicle seat S is performed. Thus, when the vibration unit 50 is operated, the vibration weight 53 is rotated together with the rotation shaft 52 of the drive motor 51, so that the vibration unit 50 generates vibration. The vibration of the vibration unit 50 is directly transmitted to the entire pressure receiving member 30 without passing through the spring member, and is efficiently transmitted from the pressure receiving member 30 to the upper body of the occupant and parts other than the upper body through the cushion pad. Is done.

  That is, according to the vehicle seat S of the embodiment, the vibrations generated by the vibration unit 50 in order to give the occupant seated on the seat cushion S1 a massage effect, an awakening effect, etc. Can be transmitted efficiently. In this case, the vibration unit 50 is housed in the housing recess 30 </ b> E that protrudes toward the rear surface (back surface) side of the pressure receiving member 30, and the vibration unit 50 is disposed behind the front surface that is the pressure receiving surface of the pressure receiving member 30. The uncomfortable feeling that the vibration unit 50 contacts the upper body of the occupant supported by the seat back S2 can be eliminated.

  Further, according to the vehicle seat S of the embodiment, the cover plate 55 is attached (fixed) around the housing recess 30E of the pressure receiving member 30 together with the mounting bracket 54 of the vibration unit 50, and therefore the vibration unit 50 and the cushion pad The vibration unit 50 can be stably operated by suppressing interference with (not shown). And since the cover recessed part 30E in which the vibration unit 50 was accommodated is covered with the cover plate 55, it can suppress that dust enters into the accommodation recessed part 30E. Moreover, the bottom part of the accommodation recessed part 30E functions as a 1st cover member (interference suppression member), and it suppresses that the vibration unit 50 and the cushion pad which covers the back side of the seat back frame F2, and the vibration unit 50 interfere. To do.

  Furthermore, since the nut N, which is a mounting member for mounting the mounting bracket 54 of the vibration unit 50, is insert-molded around the opening of the receiving recess 30E of the pressure receiving member 30, the mounting work of the mounting bracket 54 is easily performed. Moreover, the rigidity of the pressure receiving member 30 can be increased and the vibration of the vibration unit 50 can be efficiently transmitted to the entire pressure receiving member 30.

  Further, since the vibration unit 50 is disposed at a position where it does not overlap with the upper support wire 26 and the lower support wire 27, that is, at a height position between the upper support wire 26 and the lower support wire 27, the vibration unit 50 is assembled. Sometimes the upper support wire 26 and the lower support wire 27 do not get in the way, and the assembly workability of the vibration unit 50 can be improved.

  Further, an upper support wire 26 and a lower support wire 27 are provided so as to connect the left and right portions of the seat back frame F2, and a hook-shaped holding portion 30B that engages with a central support portion 26B of the upper support wire 26 from below. And a hook-shaped holding portion 30D that engages with the central support portion 27B of the lower support wire 27 from below are arranged side by side above and below the vibration unit 50, and a large vibration of the pressure receiving member 30 is generated. Since the pressure receiving member 30 holds the upper support wire 26 and the lower support wire 27 in the portion, when the vibration unit 50 vibrates, the pressure receiving member 30 interferes with the upper support wire 26 and the lower support wire 27 that are linear members. It is possible to suppress the generation of abnormal noise.

  The vehicle seat S as one embodiment of the vehicle seat according to the present invention has been described above, but the vehicle seat according to the present invention is not limited to the vehicle seat S according to the embodiment, and the structure thereof. Can be appropriately changed.

  For example, as shown in FIGS. 8 to 10, the pressure receiving member 30 may form a plurality of vertical beads 30 </ b> F and horizontal beads 30 </ b> G that bulge to the rear surface (back surface) side. In this case, since the rigidity of the pressure receiving member 30 is increased by the presence of the plurality of vertical beads 30F and horizontal beads 30G, the vibration generated by the vibration unit 50 can be transmitted to the entire pressure receiving member 30.

  As shown in FIGS. 8 and 9, the vibration unit 50 can be installed on the rear surface (rear surface) side of the pressure receiving member 30 in a vertical direction with the rotation axis facing the vertical direction. In this case, in order to suppress the interference between the vibration unit 50 and the cushion pad (not shown) and operate the vibration unit 50 stably, the motor cover portion 56A that covers the drive motor 51 and the motor cover portion 56A are disposed outside the motor cover portion 56A. It is preferable to provide a cover member (first cover member, interference suppression member) 56 having a weight cover portion 56 </ b> B that protrudes and covers the rotation region of the vibration weight 53. At this time, the motor cover portion 56A can be bent from the weight cover portion 56B to project outward in a stepped shape. The cover member 56 is attached to the pressure receiving member 30 by fastening together with the mounting bracket 57 of the vibration unit 50.

  Furthermore, as shown in FIG. 10, the vibration unit 50 can be installed on the rear surface (back surface) side of the pressure receiving member 30 with the rotation axis facing sideways in the left-right direction. Also in this case, in order to suppress the interference between the vibration unit 50 and the cushion pad (not shown) and operate the vibration unit 50 stably, the motor cover portion 58A that covers the drive motor 51 and the outside of the motor cover portion 58A. It is preferable to provide a cover member (first cover member) 58 having a weight cover portion 58 </ b> B that overhangs and covers the rotation region of the vibrating weight 53. The cover member 58 is attached to the pressure receiving member 30 by fastening together with the mounting bracket 59 of the vibration unit 50. Here, part of the vibration unit 50 enters a recess formed between the two horizontal beads 30G arranged vertically, so that the space in the recess can be used effectively, so that the vehicle seat S can be used. Can be made compact.

  As in these modifications, by providing the cover members 56 and 58 on the rear side of the vibration unit 50, the back cover (covering member) that covers the rear side of the seat back frame F2 may interfere with the vibration unit 50. It is suppressed. In addition, since the cover members 56 and 58 are composed of the motor cover portions 56A and 58A and the weight cover portions 56B and 58B, it is possible to reduce the interference and prevent interference with the back cover even if the eccentric weight vibrates. can do. Moreover, the rigidity of the cover members 56 and 58 can be made high if the weight cover portions 56B and 58B protrude from the motor covers 56A and 58A.

  In the embodiment, both ends of the lower support wire 27 are supported by the toggle support mechanism 40. However, only one end may be supported by the toggle support mechanism 40, or the toggle support mechanism 40 is used. Instead, both ends may be supported by the left and right side frames.

  In the embodiment, the vibration unit 50 is provided near the center of the pressure receiving member 30 in the vertical direction. However, the vibration unit 50 may be provided below the center. When the pressure receiving member 30 is provided on the lower side of the seat back S2, normally, the lower part (around the waist) of the upper body of the occupant is in contact with the seat back S2, so that the vibration of the vibration unit 50 is reduced. It can be transmitted stably to the passenger.

  The vehicle seat S according to the embodiment is configured for a vehicle in which the driver's seat is arranged on the right side. However, the vehicle seat S is arranged on the left side by reversing the structure in the left-right direction. Applicable.

  Further, the vehicle seat S according to the embodiment may be configured as a bucket type vehicle seat in which a seat cushion S1, a seat back S2, and a headrest S3 are integrally configured.

  Furthermore, the vehicle seat of the present invention can be configured as a boat or aircraft seat.

F1 Seat cushion frame 11 Front frame 12 Cushion side frame 13 Rear connection pipe F2 Seat back frame 21 Upper frame 22 Back side frame 23 Lower frame 24 Support bracket 25 Reinforcement member 26 Upper support wire 27 Lower support wire 28 Support tongue piece 30 Pressure receiving member 30A Engagement hook part 30B Engagement hook part 30C Engagement hook part 30D Engagement hook part 30E Housing recess 40 Toggle support mechanism B Bolt N Nut RU Reclining unit S Vehicle seat S1 Seat cushion S2 Seat back S3 Headrest SL Slide rail

  The present invention relates to a vehicle seat including at least a seat cushion and a seat back, and more particularly to a vehicle seat capable of transmitting vibration from a seat back to an upper body of an occupant seated on the seat cushion.

  As a vehicle seat provided with a seat cushion and a seat back, a vehicle seat in which a vibrator for applying massage vibration to the upper body of an occupant seated on the seat cushion is incorporated in the seat back is generally known (for example, Patent Document 1).

  Here, in the vehicle seat described in Patent Document 1, the upper and lower reinforcing frames are stretched from side to side with respect to the seat back frame constituting the skeleton of the seat back, and the frame body is clipped on the upper and lower reinforcing frames. A vibrator is attached to the frame body via a spring member.

Japanese Utility Model Publication No. 61-196741

By the way, in the vehicle seat described in Patent Document 1, it is the frame that supports the occupant's upper body from the rear, but the vibrator (vibration unit) is held by the frame via the spring member. The vibration of the vibrator may be absorbed by the spring member before it is transmitted to the frame, and there is a concern that the vibration transmission effect on the occupant's upper body is low.
Moreover, there is a problem that the number of parts increases by using a dedicated spring member for attaching the vibrator to the frame.

  Further, when the vibration unit interferes with surrounding members, abnormal noise may be generated or the occupant may feel uncomfortable, so it is desirable that the vibration unit does not easily interfere with surrounding members.

  The present invention has been made in view of the technical background as described above, and can efficiently transmit desired vibrations from the seat back to the upper body of the occupant seated on the seat cushion. It is an object of the present invention to provide a vehicle seat that does not easily interfere with surrounding members and can reduce the number of parts.

The vehicle seat of the present invention that solves the above-described problem is a vehicle seat that includes at least a seat cushion and a seat back, and the seat back includes a seat back frame that constitutes a skeleton, and an inner side of the seat back frame. A pressure receiving member that is disposed on the seat back to support the upper body of the occupant, a support wire that elastically supports the pressure receiving member on the seat back frame, a covering member that covers the seat back frame and the pressure receiving member, and the pressure receiving member The support wire includes a concave portion that is disposed below the vibration unit and that is curved away from the vibration unit .

The vehicle seat according to the present invention is configured to receive a load from the occupant's upper body and to sink the occupant's upper body into the seat back when a backward movement load acts on the seat back. A vibration unit is attached to a member to which sufficient pressure is applied from the upper body. Therefore, if the vibration unit operates while the upper body of the occupant seated on the seat cushion is supported by the seat back, the vibration generated by the vibration unit is directly transmitted to the entire pressure receiving member that receives the load from the upper body of the occupant. Then, it is efficiently transmitted from the pressure receiving member to the occupant's upper body through the covering member. Further, since the spring member is not necessary for attaching the vibration unit to the pressure receiving member, the number of parts can be reduced.
The covering member of the present invention includes a cushion pad, a skin provided outside the cushion pad, a back cover that covers the back side of the seat, and the like.

The vehicle seat according to the present invention includes a bolt for attaching the vibration unit to the pressure receiving member, and a head portion of the bolt is positioned in front of the support wire in the front-rear direction of the vehicle seat. Also good.

In the vehicle seat of the present invention, the pressure receiving member is disposed on the left holding portion that holds the left supporting portion that is disposed on the left side of the concave portion of the support wire, and on the right side of the concave portion of the supporting wire. A right holding portion that holds the right support portion, and the vibration unit can be disposed between the left holding portion and the right holding portion in the left-right direction of the vehicle seat. .

  In the vehicle seat of the present invention, the pressure receiving member may have a central holding portion that holds the concave portion of the support wire.

In the vehicle seat of the present invention, the pressure receiving member may have a first hole and a second hole, and the central holding portion may be disposed between the first hole and the second hole. .

In the vehicle seat of the present invention, the left holding portion engages with the left support portion from above, the right holding portion engages with the right support portion from above, and the center holding portion. The portion may engage with the concave portion from below.

In the present invention, when the vibration unit operates in a state where the upper body of the occupant seated on the seat cushion is supported by the seat back, vibration generated by the vibration unit is directly transmitted to the entire pressure receiving member, and the pressure receiving member transmits the covering member. Is efficiently transmitted to the upper body of the occupant. Therefore, according to the present invention, the desired vibration generated by the vibration unit can be efficiently transmitted from the seat back to the upper body of the occupant seated on the seat cushion. Furthermore, since a spring member for attaching the vibration unit to the pressure receiving member is unnecessary, the number of parts can be reduced.

1 is a perspective view of a vehicle seat showing an embodiment of a vehicle seat according to the present invention. FIG. 2 is a front perspective view of a seat cushion frame and a seat back frame built in the vehicle seat shown in FIG. 1. It is a rear view of the seat back frame shown in FIG. It is a front side perspective view of the pressure receiving member shown in FIG. FIG. 5 is a rear perspective view of the pressure receiving member shown in FIG. 4. FIG. 3 is an exploded perspective view seen from the front side of the pressure receiving member and the second cover member shown in FIG. 2. FIG. 7 is an enlarged perspective view of the vibration unit shown in FIG. 6. FIG. 6 is a partial enlarged perspective view showing a vibration unit and a first cover member attached to a back surface of a pressure receiving member as viewed from the left side as a modification of the vehicle seat according to the embodiment. FIG. 9 is a partially enlarged perspective view showing the vibration unit and the first cover member shown in FIG. 8 as viewed from the right side. FIG. 6 is a partially enlarged perspective view showing a vibration unit and a first cover member attached laterally on the back surface of a pressure receiving member as viewed from the right side as another modified example of the vehicle seat of one embodiment.

  Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to the accompanying drawings. For example, as shown in FIG. 1, the vehicle seat according to the embodiment is configured as a vehicle seat S disposed in a driver's seat of an automobile. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3 in which a cushion pad made of a cushion material such as urethane foam is covered with an outer skin such as synthetic leather or fabric. The cushion pad, the skin, and the back cover that covers the back of the vehicle seat S in this skin are examples of the covering member. In the following description, the front-rear and left-right directions are directions viewed from the occupant assuming a state in which the occupant is seated on the seat cushion S1.

  As shown in FIG. 2, the seat cushion S1 incorporates a seat cushion frame F1 constituting the skeleton, and the seat back S2 incorporates a seat back frame F2 constituting the skeleton. Although not shown, the headrest S3 also incorporates a headrest frame that constitutes the skeleton thereof.

  The seat cushion frame F1 is press-molded into a substantially U shape with a rear portion opened in plan view, and has a plate-like front frame 11 at the front portion. The rear portions of the cushion side frames 12, 12 extending rearward from the left and right portions of the front frame 11 are connected to the left and right via a rear connection pipe 13. Then, four seat cushion springs 14 are stretched side by side between the rear connecting pipe 13 and the front frame 11. Such a seat cushion frame F1 is provided on the floor of the driver's seat so that the position can be adjusted in the front-rear direction via the slide rail SL.

  On the other hand, the seat back frame F2 is welded in a state where the upper pipe frame 21 formed by bending a pipe material into an inverted U shape with the lower portion opened in a front view and the left and right lower portions of the upper pipe frame 21 are held. The left and right backside frames 22 and 22 are connected to each other and a lower frame 23 is connected between the lower ends of the backside frames 22 and 22, and these are framed in a vertically long rectangle. And the lower part of such a seat back frame F2 is rotatably connected to the rear end part of the left and right cushion side frames 12, 12 of the seat cushion frame F1 via a reclining unit RU, so that the seat back The frame F2 can be tilted back and forth.

  A pair of left and right support brackets 24 for mounting a pair of left and right headrest stays (not shown) protruding from the lower portion of the headrest S3 shown in FIG. 1 are provided on the horizontal portion of the upper part of the upper pipe frame 21 of the seat back frame F2. 24 is fixed by welding. Further, between the upper portions of the left and right vertical portions of the upper frame 21, a reinforcing member 25 is installed on the upper portion of the pressure receiving member 30. The reinforcing member 25 is formed by bending a rod into a symmetrical shape substantially along the plane of the seat back frame F2.

Here, as shown in FIGS. 2 and 3, a pressure receiving member 30 for supporting the upper body of the occupant seated on the seat cushion S <b> 1 so as to be elastically retractable is provided inside the frame-like seat back frame F <b> 2. Is arranged. Then, for elastically supporting the pressure receiving member 30 in the longitudinal direction, between the bottom of the vertical portion of the right and left upper frame 21, the upper portion supporting the wire 26 is stretched between the left and right of the back side frames 22, 22 the lower portion support wire 27 is stretched. These upper support wire 26 and lower support wire 27 are linear members obtained by bending a wire such as a piano wire having spring elasticity into a bilaterally symmetric shape substantially along the plane of the seat back frame F2. Here, it is desirable to provide the upper support wire 26 or the lower support wire 27 so as to be bent away from the vibration unit 50, because the workability of attaching the upper support wire 26, the lower support wire 27 or the vibration unit 50 is improved.

  The upper support wire 26 is bent downward so that the left and right ends are along the left and right vertical portions of the upper frame 21. Then, the left and right end portions of the upper support wire 26 are respectively held by the left and right vertical portions of the upper frame 21 while being held by the support tongues 28 and 28 which are welded and fixed to the left and right vertical portions of the upper frame 21, respectively. Connected and supported. The upper support wire 26 is located at a position where the intermediate portion supporting the pressure receiving member 30 is lower than both ends connected to and supported by the left and right support tongues 28, 28. It is bent in a mountain shape in the vertical direction so that the central support portion 26B is higher than 26A.

  The left and right ends of the lower support wire 27 are connected to toggle support mechanisms (only the right side is shown in FIG. 2) 40 installed on the inner side surfaces of the left and right backside frames 22 and 22, respectively. The lower support wire 27 is located at a position where the intermediate portion supporting the pressure receiving member 30 is lower than both ends connected to the toggle support mechanism 40, and in the middle portion, the support portions in the middle of the support portions 27A and 27A on both sides. The portion 27B is bent in a mountain shape in the vertical direction so as to be at a low position.

  The toggle support mechanism 40 includes a swing link member that can swing backward while overcoming a thought point (a point in the mechanism where movement is not determined) while resisting the tension of the tension coil spring. The left and right ends of the lower support wire 27 are connected to the swing link member. Here, the tension of the tension coil spring of the toggle support mechanism 40 is such that when the backward movement load of a predetermined value or more is applied to both ends of the lower support wire 27, the swing link member can swing back beyond the thought point. Such an appropriate tension is set.

  Here, the pressure receiving member 30 is a plate member made of resin for supporting the upper body of the occupant seated on the seat cushion S1 so as to be able to move backward and elastically. For example, the shape as shown in FIGS. That is, it is formed into a substantially pentagonal shape with the apex facing downward. On the rear surface (back surface) of the pressure receiving member 30, hook-shaped holding portions 30A and 30A that are engaged with the left and right support portions 26A and 26A of the upper support wire 26 shown in FIG. A hook-shaped holding portion 30B that engages with the central support portion 26B from below is integrally formed. Similarly, on the rear surface (back surface) of the pressure receiving member 30, hook-shaped holding portions 30C and 30C that engage with the left and right support portions 27A and 27A of the lower support wire 27 shown in FIG. A hook-shaped holding portion 30 </ b> D that engages with the central support portion 27 </ b> B of 27 from below is integrally formed.

  Here, as shown in FIGS. 6 and 7, the pressure receiving member 30 is integrally formed with a housing recess 30 </ b> E for housing the vibration unit 50. The housing recess 30E opens to the front surface (front surface) of the pressure receiving member 30 and bulges to the rear surface (rear surface). The shape of the front view is a horizontally long rectangle. Then, nuts N as an attachment member for attaching a mounting bracket 54 to be described later are embedded and embedded in four corners of the rectangular opening of the receiving recess 30E of the pressure receiving member 30. The bottom portion of the housing recess 30E functions as a first cover member (interference suppression member), and suppresses interference between the vibration unit 50, the cushion pad that covers the rear side of the seat back frame F2, and the vibration unit 50. ing.

  The vibration unit 50 includes a drive motor (actuator) 51, a vibration weight 53 attached to a rotating shaft 52 of the drive motor 51, and a mounting bracket 54 attached to the drive motor 51. The vibration weight 53 is formed by stacking a plurality of fan-shaped plates and integrated into a fan-shaped block shape in front view, and the rotation shaft 52 is attached to a position eccentric from the center of gravity so that the rotation shaft 52 rotates. As a result, vibration of a predetermined frequency is generated. The vibration generated by the vibration unit 50 can be set to an appropriate frequency that gives the occupant seated on the seat cushion S1 a massage effect, an awakening effect, and the like by changing the rotation speed of the drive motor 51. In addition, the controller which controls the action | operation of the vibration unit 50 can be installed in the driver's seat ahead of the vehicle seat S, for example.

  The mounting bracket 54 has a bolt insertion hole 54A that matches at least three of the four nuts N of the pressure receiving member 30 shown in FIG. Here, in this embodiment, the cover plate 55 attached to the front surface (front surface) of the pressure receiving member 30 together with the mounting bracket 54 is provided as a second cover member (interference suppression member). The cover plate 55 is a rectangular plate member having a size covering the receiving recess 30E of the pressure receiving member 30, and bolt insertion holes 55A that match the four nuts N are formed at the four corners. Such a cover plate 55 is placed on the front surface (front surface) of the pressure receiving member 30 by four bolts B screwed into the four nuts N of the pressure receiving member 30 through the bolt insertion holes 55A and the bolt insertion holes 54A of the mounting bracket 54. It is attached and covers the accommodation recess 30E. Thereby, the vibration unit 50 is attached to the pressure receiving member 30 without the spring member interposed therebetween. For this reason, the number of parts can be reduced.

  Then, the effect is demonstrated about the vehicle seat S comprised as one Embodiment of the vehicle seat which concerns on this invention. In the vehicle in which the vehicle seat S shown in FIG. 1 is arranged in the driver's seat, during normal operation when the pressing force acting on the seat back S2 from the upper body of the occupant seated on the seat cushion S1 is within a predetermined range, or when the vehicle is stopped At times, the upper support wire 26 and the lower support wire 27 shown in FIGS. 2 and 3 are elastically deformed rearward moderately, so that the upper body of the occupant is appropriately submerged in the seat back S2 and held in a stable driving posture. Is done.

  In the state where the upper body of the occupant seated on the seat cushion S1 of the vehicle seat S is appropriately sunk into the seat back S2, for example, an operation of a controller (not shown) installed in the driver seat in front of the vehicle seat S is performed. Thus, when the vibration unit 50 is operated, the vibration weight 53 is rotated together with the rotation shaft 52 of the drive motor 51, so that the vibration unit 50 generates vibration. The vibration of the vibration unit 50 is directly transmitted to the entire pressure receiving member 30 without passing through the spring member, and is efficiently transmitted from the pressure receiving member 30 to the upper body of the occupant and parts other than the upper body through the cushion pad. Is done.

  That is, according to the vehicle seat S of the embodiment, the vibrations generated by the vibration unit 50 in order to give the occupant seated on the seat cushion S1 a massage effect, an awakening effect, and the like from the seat back S2 to the upper body of the occupant. Can be transmitted efficiently. In this case, the vibration unit 50 is housed in the housing recess 30 </ b> E that protrudes toward the rear surface (back surface) side of the pressure receiving member 30, and the vibration unit 50 is disposed behind the front surface that is the pressure receiving surface of the pressure receiving member 30. The uncomfortable feeling that the vibration unit 50 contacts the upper body of the occupant supported by the seat back S2 can be eliminated.

  Further, according to the vehicle seat S of the embodiment, the cover plate 55 is attached (fixed) around the housing recess 30E of the pressure receiving member 30 together with the mounting bracket 54 of the vibration unit 50, and therefore the vibration unit 50 and the cushion pad The vibration unit 50 can be stably operated by suppressing interference with (not shown). And since the cover recessed part 30E in which the vibration unit 50 was accommodated is covered with the cover plate 55, it can suppress that dust enters into the accommodation recessed part 30E. Moreover, the bottom part of the accommodation recessed part 30E functions as a 1st cover member (interference suppression member), and it suppresses that the vibration unit 50 and the cushion pad which covers the back side of the seat back frame F2, and the vibration unit 50 interfere. To do.

  Furthermore, since the nut N, which is a mounting member for mounting the mounting bracket 54 of the vibration unit 50, is insert-molded around the opening of the receiving recess 30E of the pressure receiving member 30, the mounting work of the mounting bracket 54 is easily performed. Moreover, the rigidity of the pressure receiving member 30 can be increased and the vibration of the vibration unit 50 can be efficiently transmitted to the entire pressure receiving member 30.

  Further, since the vibration unit 50 is disposed at a position where it does not overlap with the upper support wire 26 and the lower support wire 27, that is, at a height position between the upper support wire 26 and the lower support wire 27, the vibration unit 50 is assembled. Sometimes the upper support wire 26 and the lower support wire 27 do not get in the way, and the assembly workability of the vibration unit 50 can be improved.

  Further, an upper support wire 26 and a lower support wire 27 are provided so as to connect the left and right portions of the seat back frame F2, and a hook-shaped holding portion 30B that engages with a central support portion 26B of the upper support wire 26 from below. And a hook-shaped holding portion 30D that engages with the central support portion 27B of the lower support wire 27 from below are arranged side by side above and below the vibration unit 50, and a large vibration of the pressure receiving member 30 is generated. Since the pressure receiving member 30 holds the upper support wire 26 and the lower support wire 27 in the portion, when the vibration unit 50 vibrates, the pressure receiving member 30 interferes with the upper support wire 26 and the lower support wire 27 that are linear members. It is possible to suppress the generation of abnormal noise.

  The vehicle seat S as one embodiment of the vehicle seat according to the present invention has been described above, but the vehicle seat according to the present invention is not limited to the vehicle seat S according to the embodiment, and the structure thereof. Can be appropriately changed.

  For example, as shown in FIGS. 8 to 10, the pressure receiving member 30 may form a plurality of vertical beads 30 </ b> F and horizontal beads 30 </ b> G that bulge to the rear surface (back surface) side. In this case, since the rigidity of the pressure receiving member 30 is increased by the presence of the plurality of vertical beads 30F and horizontal beads 30G, the vibration generated by the vibration unit 50 can be transmitted to the entire pressure receiving member 30.

  As shown in FIGS. 8 and 9, the vibration unit 50 can be installed on the rear surface (rear surface) side of the pressure receiving member 30 in a vertical direction with the rotation axis facing the vertical direction. In this case, in order to suppress the interference between the vibration unit 50 and the cushion pad (not shown) and operate the vibration unit 50 stably, the motor cover portion 56A that covers the drive motor 51 and the motor cover portion 56A are disposed outside the motor cover portion 56A. It is preferable to provide a cover member (first cover member, interference suppression member) 56 having a weight cover portion 56 </ b> B that protrudes and covers the rotation region of the vibration weight 53. At this time, the motor cover portion 56A can be bent from the weight cover portion 56B to project outward in a stepped shape. The cover member 56 is attached to the pressure receiving member 30 by fastening together with the mounting bracket 57 of the vibration unit 50.

  Furthermore, as shown in FIG. 10, the vibration unit 50 can be installed on the rear surface (back surface) side of the pressure receiving member 30 with the rotation axis facing sideways in the left-right direction. Also in this case, in order to suppress the interference between the vibration unit 50 and the cushion pad (not shown) and operate the vibration unit 50 stably, the motor cover portion 58A that covers the drive motor 51 and the outside of the motor cover portion 58A. It is preferable to provide a cover member (first cover member) 58 having a weight cover portion 58 </ b> B that overhangs and covers the rotation region of the vibrating weight 53. The cover member 58 is attached to the pressure receiving member 30 by fastening together with the mounting bracket 59 of the vibration unit 50. Here, part of the vibration unit 50 enters a recess formed between the two horizontal beads 30G arranged vertically, so that the space in the recess can be used effectively, so that the vehicle seat S can be used. Can be made compact.

  As in these modifications, by providing the cover members 56 and 58 on the rear side of the vibration unit 50, the back cover (covering member) that covers the rear side of the seat back frame F2 may interfere with the vibration unit 50. It is suppressed. In addition, since the cover members 56 and 58 are composed of the motor cover portions 56A and 58A and the weight cover portions 56B and 58B, it is possible to reduce the interference and prevent interference with the back cover even if the eccentric weight vibrates. can do. Moreover, the rigidity of the cover members 56 and 58 can be made high if the weight cover portions 56B and 58B protrude from the motor covers 56A and 58A.

  In the embodiment, both ends of the lower support wire 27 are supported by the toggle support mechanism 40. However, only one end may be supported by the toggle support mechanism 40, or the toggle support mechanism 40 is used. Instead, both ends may be supported by the left and right side frames.

  In the embodiment, the vibration unit 50 is provided near the center of the pressure receiving member 30 in the vertical direction. However, the vibration unit 50 may be provided below the center. When the pressure receiving member 30 is provided on the lower side of the seat back S2, normally, the lower part (around the waist) of the upper body of the occupant is in contact with the seat back S2, so that the vibration of the vibration unit 50 is reduced. It can be transmitted stably to the passenger.

  The vehicle seat S according to the embodiment is configured for a vehicle in which the driver's seat is arranged on the right side. However, the vehicle seat S is arranged on the left side by reversing the structure in the left-right direction. Applicable.

  Further, the vehicle seat S according to the embodiment may be configured as a bucket type vehicle seat in which a seat cushion S1, a seat back S2, and a headrest S3 are integrally configured.

  Furthermore, the vehicle seat of the present invention can be configured as a boat or aircraft seat.

F1 Seat cushion frame 11 Front frame 12 Cushion side frame 13 Rear connection pipe F2 Seat back frame 21 Upper frame 22 Back side frame 23 Lower frame 24 Support bracket 25 Reinforcement member 26 Upper support wire 27 Lower support wire 28 Support tongue piece 30 Pressure receiving member 30A Engagement hook part 30B Engagement hook part 30C Engagement hook part 30D Engagement hook part 30E Housing recess 40 Toggle support mechanism B Bolt N Nut RU Reclining unit S Vehicle seat S1 Seat cushion S2 Seat back S3 Headrest SL Slide rail

Claims (12)

A vehicle seat having at least a seat cushion and a seat back,
The seat back includes a seat back frame constituting a skeleton, a pressure receiving member that is disposed inside the seat back frame and supports an upper body of an occupant, and an elastic that elastically supports the pressure receiving member on the seat back frame. A support member, and a covering member that covers the seat back frame and the pressure receiving member. When a backward movement load acts on the seat back from the upper body of the occupant seated on the seat cushion, the pressure receiving member moves backward to Configured to sink the upper body into the seat back,
The vehicle seat, wherein the pressure receiving member is provided with a vibration unit.   The vehicle seat according to claim 1, wherein an interference suppressing member for suppressing interference between the vibration unit and the covering member is provided between the vibration unit and the covering member.   The vehicle seat according to claim 2, wherein the interference suppression member is a first cover member that covers the vibration unit. The pressure receiving member is integrally formed with a recess,
The vehicle seat according to claim 2 or 3, wherein at least a part of the vibration unit is accommodated in a concave portion of a pressure receiving member.   The vehicle seat according to any one of claims 1 to 4, wherein the vibration unit is disposed behind a pressure receiving surface of the pressure receiving member. The vibration unit has a motor body and an eccentric weight attached to a rotating shaft extending from the motor body,
The said 1st cover member has a motor cover part which covers the said motor main body, and a weight cover part which protrudes outside the said motor cover part and covers the rotation area | region of the said eccentric weight, The 3rd aspect is characterized by the above-mentioned. The vehicle seat according to claim 1. The pressure receiving member has the recess opening forward,
The vibration unit is provided with a mounting bracket attached to the periphery of the recess of the pressure receiving member,
The vehicle mounting device according to any one of claims 4 to 6, wherein the mounting bracket is mounted around the concave portion of the pressure receiving member in a state where the vibration unit is accommodated in the concave portion. Sheet.   The vehicle seat according to any one of claims 4 to 7, further comprising a second cover member that covers the concave portion in which the vibration unit is accommodated from the outside of the mounting bracket. .   The vehicle seat according to claim 7 or 8, wherein the pressure receiving member is formed by insert molding a mounting member for mounting the mounting bracket around the recess.   The vehicle seat according to any one of claims 1 to 9, wherein the vibration unit is disposed at a position that does not overlap the elastic support member.   The said elastic support member is comprised by the two linear members arrange | positioned up and down on both sides of the said vibration unit, The object for vehicles of any one of Claims 1-10 characterized by the above-mentioned. Sheet. The elastic support member is provided so as to connect right and left portions of the seat back frame,
The vehicle seat according to any one of claims 1 to 11, wherein a holding portion for holding the elastic support member by the pressure receiving member is arranged side by side with the vibration unit. .

Images