JP5781813B2 - Vehicle seat lifting mechanism - Google Patents

Description

  The present invention relates to a vehicle seat flip-up mechanism, and more particularly to a vehicle seat flip-up mechanism that can be stably fixed to a vehicle body floor.

  2. Description of the Related Art Conventionally, there is known a vehicle seat that can be stowed when not in use by tilting the seat back and flipping up the seat cushion. For example, Patent Document 1 discloses a vehicle seat that can be stored in a tumble state by tilting the seat back forward and raising the seat cushion forward.

  In the double folding mechanism for a vehicle seat disclosed in Patent Document 1, the seat cushion is attached to the floor of the passenger compartment via a connecting structure having a rotating mechanism. When the seat cushion is stored, the seat cushion is rotated forward by a rotation mechanism including a rotation member, and is held at a predetermined position.

  This connection structure is provided with a plate-like fixing member that is fixed to the passenger compartment floor. The fixing members are provided in a pair in the sheet width direction (left-right direction), although the shapes thereof are different from each other, and a reinforcing member is installed on the fixing member. Therefore, the connection structure is fixed to the passenger compartment floor via the substantially L-shaped plate-shaped fixing member in plan view.

Japanese Patent No. 4468310

  2. Description of the Related Art In a vehicle seat that raises a seat cushion and stores it in a tumble state, a long rotating member that rotates while supporting the seat cushion is disposed along the front-rear direction of the seat. The rotating member needs to be formed with a length equal to or longer than a predetermined length in order to raise the seat cushion to the storage position (the flip-up position).

  In the connection structure of the double folding mechanism disclosed in Patent Document 1, the rotating member is formed longer than the fixed member. That is, when the seat cushion is in the sitting posture, the rotating member is formed so as to protrude rearward from the fixed member in plan view.

  As in Patent Document 1, the connection structure in which the fixing member is formed asymmetrically left and right and the rotation member is formed larger has a disadvantage that the load applied to the seat cushion is not easily dispersed. Therefore, there is a problem that the entire connecting structure is easily tilted in a direction in which the fixing member is not provided, and it is difficult to stably support the load of the occupant.

  Further, the double folding mechanism disclosed in Patent Document 1 has a structure in which a plurality of members are stacked in the seat width direction and the vertical direction in a structure in which a seat cushion is attached.

  An object of the present invention is to provide a vehicle seat flip-up mechanism that can be stably fixed to a vehicle body floor and can stably support a passenger's load in the vehicle seat flip-up mechanism. . Another object of the present invention is to provide a vehicle seat flip-up mechanism that saves space without increasing the size of the vehicle seat flip-up mechanism.

According to the vehicle seat flip-up mechanism according to claim 1 of the present invention, the subject is formed such that the seat cushion can be switched between a normal seating posture and a storage posture in which the seat is stored while being tilted forward. A vehicle seat flip-up mechanism that is attached to the ends of the pair of links and a pair of long links that are separated in the seat width direction and extend in the front-rear direction. A pair of mounting brackets for supporting the seat cushion, a connecting member installed on the pair of mounting brackets, a pair of support mechanisms for rotatably supporting the pair of links, and a lower part of the pair of support mechanisms. and a mounting plate that is locked to the vehicle body floor while being set, mounting plate, said Ri Na is extended rearward than link, a fixed member that extends in the sheet width direction, the fixing member And one end side And a mounting member disposed along the extending direction of the link with, attachment member is solved with superimposed at one end of the fixing member, to have contact with the mounting surface on the vehicle body floor, the Is done.

Thus, in the vehicle seat flip-up mechanism formed so that the seat cushion can be switched between the seating posture and the storage posture, the attachment is attached to the vehicle body floor rather than the link for rotating the seat cushion. A plate extends backward. With this configuration, since the mounting plate is formed longer rearward than the link, a base portion for fixing each member to the vehicle body floor is formed. Therefore, when the occupant is seated, the load applied to the seat cushion is easily distributed and transmitted to the vehicle floor, and as a result, the seat cushion can stably support the occupant's load.
Further, with the above configuration, the flip-up mechanism fixed to the vehicle body floor can distribute and transmit the load to the vehicle body floor, so that the load of the flip-up mechanism is deviated and tilted in one direction. Can be suppressed. Therefore, the vehicle seat flip-up mechanism of the present invention can be stably fixed to the vehicle body floor.

Furthermore, as according to claim 2, and an imaginary line connecting the vertices of the side in which the no attachment member is superimposed on the rear end portion of the seat width direction inside of the vertex and the fixed member of the rear end portion of the attachment surface portion, said It is preferable that the point where the connecting member intersects with the connecting member is disposed on the other end side of the fixing member with respect to the central portion in the extending direction of the connecting member.
As described above, in the vehicle seat flip-up mechanism according to the present invention, the central portion in the extending direction of the connecting member is an intersection where the connecting member and the imaginary line passing through the predetermined point of the fixing member intersect with the connecting member in a top view. It is comprised so that it may become closer to an attachment member. The central portion of the connecting member is an intermediate point between the pair of mounting brackets that support the seat cushion, and is the point at which the load from the seat cushion (including the seating load of the occupant) is most easily applied. On the other hand, the intersection where the imaginary line and the connecting member intersect is the position of the center of gravity of the member constituting the flip-up mechanism, and is at the position where the flip-up member is tilted backward. Therefore, the seat cushion can easily support the load of the occupant by disposing the intermediate point of the mounting bracket so as to be closer to the mounting member than the position of the center of gravity of the member constituting the flip-up mechanism. Further, the load applied to the central portion of the connecting member suppresses the movement of the member constituting the flip-up mechanism tilting backward. As a result, it is possible to further suppress the vehicle seat flip-up mechanism from tilting backward.

Further, according to a third aspect of the present invention, the link disposed on the side on which the mounting member is attached among the pair of links includes an outer end in the seat width direction of the mounting member, an inner end, It is preferable to be disposed between the two.
As described above, when one of the links spaced apart in the sheet width direction is disposed above the attachment member, the inner end portion and the outer end portion of the attachment member are disposed in the sheet width direction. It is arranged in between. With such a configuration, the attachment portion of the link with respect to the attachment member is stably attached without being twisted when the link is rotated. Therefore, by providing the above configuration, the link is stably fixed to the vehicle body floor.
In addition, since the link is disposed at a position overlapping the mounting member in the seat width direction, the vehicle seat flip-up mechanism is suitable without increasing the size in the seat width direction.

According to a fourth aspect of the present invention, it is preferable that one end of the mounting member is sandwiched and disposed between the fixing member and the vehicle body floor.
As described above, when one end of the mounting member is disposed between the fixing member and the vehicle body floor, when the load that causes the flip-up mechanism to tilt rearward is applied, the one end of the mounting member is Since the fixing member is pressed from above to below, the movement of the vehicle seat flip-up mechanism is restrained from being inclined.

Further, according to claim 5, at least one of the pair of support mechanisms includes a spiral spring attached to the fixing member and biasing the link, and overlaps with the fixing member of the mounting member. It is preferable that the formed portion is disposed on the outer side in the sheet width direction from the position where the spiral spring is attached.
In this way, the attachment member is formed so as not to overlap in the height direction with respect to the spiral spring that biases the link. Therefore, since the plurality of members are arranged so as not to overlap in the height direction, it is possible to prevent the vehicle seat flip-up mechanism from increasing in size in the height direction.

According to the first aspect of the present invention, by forming the attachment plate fixed to the vehicle body floor to be longer rearward than the link for rotating the seat cushion, the vehicle seat flip-up mechanism tilts backward. Can be suppressed. Therefore, the vehicle seat flip-up mechanism is stably fixed to the vehicle body floor. Moreover, since it is possible to disperse | distribute the load from a seat cushion and to disperse | distribute to a vehicle body floor, a passenger | crew's load can be supported stably.
According to the second aspect of the present invention, the intermediate portion of the connecting bar that is likely to be subjected to the load of the occupant is disposed in the vicinity of the mounting member, so that the vehicle seat jumps easily to support the occupant's load and hardly tilts. A lifting mechanism can be provided.
According to invention of Claim 3, since a link is arrange | positioned between the sheet width direction inner side edge part of an attachment member, and an outer side edge part, a link is stably fixed. In addition, an increase in the size of the vehicle seat flip-up mechanism can be prevented.
According to the fourth aspect of the present invention, when a load that causes the flip-up mechanism to tilt backward is applied, the mounting member is pressed from above to the vehicle body floor side by the fixing member. It is possible to suppress.
According to the invention of claim 5, since the plurality of members do not overlap at the position where the spiral spring for urging the link is attached, it is possible to suppress an increase in the size of the vehicle seat flip-up mechanism.

It is a side surface schematic diagram of the vehicle rear part carrying vehicle seat S1. It is a perspective view of vehicle seat S1. 2 is a perspective view of a cushion frame 11. FIG. It is a perspective view (Drawing 1) of seat cushion flip-up mechanism 60 concerning a 1st embodiment. It is a figure when the seat back frame 21 is seen from the front side. FIG. 3 is a diagram showing an internal frame 31 of the headrest 30. It is a figure when the headrest rotation mechanism 50 is seen from the front side. It is a figure when the headrest rotation mechanism 50 is seen from the rear side. 3 is a perspective view of a headrest rotation mechanism 50. FIG. It is a perspective view (Drawing 2) of seat cushion flip-up mechanism 60 concerning a 1st embodiment. It is a figure when the seat cushion raising mechanism 60 which concerns on 1st Embodiment is seen from upper direction. It is a figure when the seat back support unit 90 is seen from the side. It is explanatory drawing of the 1st board part. It is sectional drawing equivalent to the II line | wire of FIG. It is a figure when the support mechanism 125 is seen from above. It is explanatory drawing of the attachment unit 110 which concerns on 1st Embodiment. It is explanatory drawing of the attachment unit 110 which concerns on 2nd Embodiment. It is explanatory drawing of the attachment unit 110 which concerns on 3rd Embodiment. It is explanatory drawing of the attachment unit 110 which concerns on 4th Embodiment. FIG. 6 is a cross-sectional view of a connection frame 117. It is explanatory drawing of the attachment unit 110 which concerns on 5th Embodiment. It is explanatory drawing of the attachment unit 110 which concerns on 6th Embodiment.

  Hereinafter, an embodiment according to the present invention (hereinafter, this embodiment) will be described with reference to FIGS. In addition, embodiment described below is for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof. Furthermore, the materials, shapes, and the like given in the following description are merely examples for exhibiting the effects of the present invention, and do not limit the present invention.

  FIGS. 1 to 16 illustrate a vehicle seat (hereinafter, vehicle seat S1) according to the first embodiment. FIG. 1 is a schematic side view of the rear portion of the vehicle on which the vehicle seat S1 is mounted. FIG. 2 is a perspective view of the vehicle seat S1. FIG. 3 is a perspective view of the cushion frame 11. FIG. 4 is a perspective view (FIG. 1) of the seat cushion flip-up mechanism 60 according to the first embodiment. FIG. 5 is a view when the seatback frame 21 is viewed from the front side. FIG. 6 is a view showing the inner frame 31 of the headrest 30. 7 to 9 are diagrams showing the headrest rotating mechanism 50, FIG. 7 is a diagram when the headrest rotating mechanism 50 is viewed from the front side, and FIG. 8 is a diagram when viewed from the rear side. FIG. 9 is a perspective view. FIG. 10 is a perspective view (FIG. 2) of the seat cushion flip-up mechanism 60 according to the first embodiment. FIG. 11 is a view of the seat cushion flip-up mechanism 60 according to the first embodiment as viewed from above. FIG. 12 is a view of the seat back support unit 90 as viewed from the side. FIG. 13 is an explanatory diagram of the first plate portion 112. 14 is a cross-sectional view corresponding to the line II in FIG. FIG. 15 is a view of the support mechanism 125 as viewed from above. FIG. 16 is an explanatory diagram of the mounting unit 110. FIG. 17 is an explanatory diagram of the mounting unit 110 according to the second embodiment, and FIG. 18 is an explanatory diagram of the mounting unit 110 according to the third embodiment. 19 and 20 relate to the fourth embodiment. FIG. 19 is an explanatory view of the mounting unit 110, and FIG. 20 is a cross-sectional view of the connecting frame 117. FIG. 21 is an explanatory diagram of the mounting unit 110 according to the fifth embodiment, and FIG. 22 is an explanatory diagram of the mounting unit 110 according to the sixth embodiment.

  In the figure, symbol FR indicates the front of the vehicle, symbol RR indicates the rear of the vehicle, and symbol UP indicates the upper side of the vehicle. In the following description, the left-right direction means the left-right direction in a state of facing the front of the vehicle, and is a direction that coincides with the width direction of the seat back frame 21 described later.

  The vehicle seat S1 is an example of a vehicle seat. As shown in FIG. 1, the vehicle seat S1 is mounted as a rear seat in a vehicle having a luggage space at the rear of a vehicle body. It is mounted on a wagon-type car.

  The configuration of the vehicle seat S1 will be described. In this embodiment, the vehicle seat S1 is divided into a right side (driver's seat side) vehicle seat S11 and a left side (passenger side) vehicle seat S12. , S12 includes a seat cushion 10, a seat back 20, and a headrest 30. Note that an armrest 40 is disposed between the seat backs 20 of the vehicle seats S11 and S12. In the left vehicle seat S12, the pedestal 20a and the seat back positioned below the armrest 40 in FIG. 20, and the overhanging portion 10 a and the seat cushion 10 disposed at a position below the pedestal portion 20 a in FIG. 2 are integrated. Although the vehicle seat S11 on the right side and the vehicle seat S12 on the left side are different in the above points, the vehicle seats S11 and S12 are common in terms of the basic configuration. Therefore, in the following description, only the configuration of the right vehicle seat S11 will be described as an example.

  The vehicle seat S1 is configured so that the luggage compartment portion 3 is formed when the vehicle seat S1 is not in use from a normal posture in which the occupant can be seated (the posture shown by a broken line in FIG. 1; hereinafter, a seated posture). It is possible to switch to the stored posture (the posture shown by a solid line in FIG. 1 and hereinafter referred to as the stored posture). That is, when the posture of the vehicle seat S1 is switched to the storage posture, the seat cushion 10 is flipped up toward the front of the vehicle. Further, in conjunction with the seat cushion 10 being flipped up, the seat back 20 is pivoted forward so that the seat cushion 10 is laid down on the vehicle body floor 2 at the position where the seat cushion 10 before the seat cushion 10 was placed. Furthermore, when the headrest 30 is rotated approximately 90 degrees forward from the state in which the headrest 30 is disposed substantially vertically above the seat back 20, and the seat back 20 falls on the vehicle body floor 2, the seat that jumps forward It is stored between the cushion 10 and the seat back 20 lying down.

  Through the series of operations described above, the vehicle seat S1 can be stored in a compact posture. And in the vehicle 1 which employ | adopts the vehicle seat S1 of the said structure as a rear seat, the luggage compartment part 3 which comprises a part of vehicle body floor 2 is formed in the back of the said vehicle seat S1, This luggage compartment part 3 is the following. The vehicle seat S1 is expanded until it can be used by the storing operation.

  As described above, the vehicle seat S1 is configured so that the posture can be switched between the sitting posture and the storage posture, and further, switching from the sitting posture to a posture in which only the headrest 30 is tilted forward, It is also possible to switch from the stowed position to a position in which only the seat back 20 is raised. Such various seat arrangements are realized by various drive mechanisms (specifically, the headrest turning mechanism 50, the seat cushion jumping mechanism 60, the seatback overturning mechanism 70, etc.) provided in the vehicle seat S1. It is. Hereinafter, a configuration for realizing the seat arrangement of the vehicle seat S1 will be described.

  In the following description, the seating positions of the seat cushion 10, the seat back 20, and the headrest 30 are the positions of the seat cushion 10, the seat back 20, and the headrest 30 when the vehicle seat S1 is in the seating position. It is. Further, the flip-up position of the seat cushion 10 is the position of the seat cushion 10 when the vehicle seat S1 is in the stowed position, and the tilted positions of the seat back 20 and the headrest 30 are respectively the vehicle seat. This is the position of the seat back 20 and the headrest 30 when the posture of S1 is the storage posture.

<< Basic configuration of vehicle seat S1 >>
In describing the configuration for realizing the seat arrangement of the vehicle seat S1, the basic configuration of the vehicle seat S1 will be described. As described above, the vehicle seat S1 includes the seat cushion 10, the seat back 20, and the headrest 30.

  The seat cushion 10 is configured by attaching a skin material to the cushion frame 11 shown in FIG. Attachment of the skin material is performed by hooking a trim cord (not shown) sewn to the end of the skin material to the outer edge of the cushion frame 11.

Further, a seat cushion flip-up mechanism 60 shown in FIG. 4 is disposed below the seat cushion 10. The seat cushion flip-up mechanism 60 is fixed on the vehicle body floor 2 and supports the seat cushion 10 and raises the seat cushion 10 from the seating position toward the flip-up position when storing the vehicle seat S1. Is.
That is, the seat cushion 10 is configured to be fixed at a seating position on the vehicle body floor 2 via the seat cushion jumping mechanism 60, and when the seat cushion jumping mechanism 60 is operated, the seat cushion 10 jumps from the seating position toward the jumping position. Has been. In other words, the seat cushion 10 can reciprocate between the sitting position and the flip-up position.

  The seat cushion flip-up mechanism 60 includes a striker lock mechanism 100. The striker lock mechanism 100 fixes the seat cushion 10 at the seating position when the vehicle seat S1 is in the seating posture. The seat cushion flip-up mechanism 60 will be described in detail later.

  The seat back 20 is rotated so as to fall forward by the seat back fall mechanism 70, and the occupant operates the operation portion 77 provided at the upper end portion of the seat back 20, so that only the seat back 20 is moved. Can be moved forward alone. And the seat back 20 is comprised by overlapping the urethane as a cushioning material on the seat back frame 21 shown in FIG. 5, and covering with a skin material. The seat back frame 21 of the seat back 20 includes a pan frame 22 that forms the base of the seat back frame 21 and a pipe frame 23 that forms the outer frame of the seat back frame 21. The pan frame 22 is formed by subjecting a substantially rectangular sheet metal to processing such as bead processing for ensuring rigidity. A headrest rotation mechanism 50 and an arrangement unit 80 are attached to the front surface of the pan frame 22.

  The headrest rotating mechanism 50 is a mechanism that tilts the headrest 30 forward by rotating the pillar 33 forward, and is operated by an operation in which an occupant pulls the band member ST1 for storing operation along the vertical direction. Thus, only the headrest 30 can be laid down. Specifically, as shown in FIGS. 7 and 8, in the headrest rotating mechanism 50, a storage operation band member ST <b> 1 for receiving an operation for sliding the slide member 54 by the occupant is provided. The band member ST1 for storing operation is fastened to the one end portion 54a in the direction. When the occupant pulls the storage operation band member ST1, the slide member 54 slides, and the lock member 52 swings to the release position so as to follow the slide member 54. Then, by sliding the slide member 54, the headrest 30 (pillar 33) can finally be tilted forward as shown in FIG.

  The pipe frame 23 is disposed along the outer edge of the pan frame 22 so as to surround the pan frame 22, and is joined to the pan frame 22 by welding. In the pipe frame 23, a portion located in the lower part in the vertical direction and a part facing the outside of the vehicle in the left and right direction are provided with a gap between the pan frame 22 in the thickness direction of the seat back 20. It is arranged. The reason why such a gap is formed is, for example, to sandwich and hold an end portion of urethane as a cushioning material superimposed on the seat back frame 21 between the pan frame 22 and the pipe frame 23.

  Further, a pillar falling restricting portion 25 made of a downward U-shaped bracket is provided in a portion of the upper end portion of the seat back frame 21 that is located on the rear side of a pillar 33 described later. The pillar fall restricting portion 25 corresponds to a restricting portion that restricts the backward rotation (falling) of the pillar 33 when the headrest 30 is located at the seating position. In addition, the pillar fall restriction | limiting part 25 is provided for every pillar 33 (namely, two pieces are provided), and is weld-stopped by the upper end part of the pipe frame 23. As shown in FIG.

  The seat back 20 having the above configuration is configured such that the pivot shaft 20b is fitted into a hole of a seat back support unit 90 (see, for example, FIG. 12) fixed to the vehicle body floor 2, so that the seat back support unit 90 Is rotatably supported. Thereby, the seat back 20 can be rotated in the front-rear direction with respect to the vehicle body floor 2, and can move between the seating position and the fall-down position. In the present embodiment, the seat back 20 lies forward in conjunction with the flip-up operation of the seat cushion 10. Furthermore, in the present embodiment, it is possible to tilt only the seat back 20 forward.

  The headrest 30 is provided above the seat back 20 (in other words, the seat back frame 21), and is filled with a foaming agent between the inverted U-shaped inner frame 31 and the skin material shown in FIG. Composed. The leg portions 31a on both sides of the inverted U-shaped inner frame 31 are hollow, and spaces for accommodating the hollow bar-shaped guides 32 are formed inside the leg portions 31a. The guide 32 is accommodated in the leg portion 31a and is configured to be able to advance and retract through an insertion hole (not shown) provided in the lower end flange portion 31b of the leg portion 31a of the internal frame 31. The skin material of the headrest 30 is provided with a through hole (not shown) so that the end portion of the guide 32 is located outside the skin material.

  In the headrest 30 configured as described above, in a state where the guide 32 is located at the most retracted position in the leg portion 31a of the inner frame 31 (a state where the guide 32 is housed in the leg portion 31a except for the lower end flange 32a). Of the skin material of the headrest 30, the portion around the through hole is sandwiched between the lower end flange portion 31 b of the leg portion 31 a of the inner frame 31 and the lower end flange 32 a of the guide 32.

  Further, in the present embodiment, the headrest 30 is supported by the pillar 33 in a state where a pair of pillars 33 (see FIG. 5) made of metal rods are inserted into the guide 32, and each pillar 33 is rotated by the headrest. The mechanism 50 is rotatably supported by the casing 51.

  The headrest 30 can be rotated by the headrest rotation mechanism 50 until the headrest 30 is tilted forward by about 90 degrees from the state of standing up above the seat back 20. In the present embodiment, the headrest 30 is pivoted so as to fall forward in conjunction with the flip-up operation of the seat cushion 10, and further, only the headrest 30 can be tilted forward alone. It is.

<< Seat cushion springing mechanism >>
When the occupant receives a storage operation to store the vehicle seat S1, the seat cushion jumping mechanism 60 jumps the seat cushion 10 toward the flip-up position as a start operation for storing the vehicle seat S1. To raise. The seat cushion flip-up mechanism 60 is covered with a resin cover (not shown), and is installed on the vehicle body floor 2 so as to be positioned below the seat cushion 10 when the seat cushion 10 is positioned at the seating position. ing.

  As shown in FIGS. 4, 10, and 11, the seat cushion flip-up mechanism 60 includes two subunits, and one subunit is an attachment unit 110 that is attached to the vehicle body floor 2, and the other The sub-unit is a movable unit 120 that is arranged on the attachment unit 110 and can perform a swing operation (rotation operation) with respect to the attachment unit 110 (in other words, the vehicle body floor 2).

  The mounting unit 110 includes a mounting plate 111 having an L-shaped appearance in a top view as a main component. Of the mounting plate 111, a first plate portion 112 as a mounting member extending along the front-rear direction of the vehicle 1 is fixed to the vehicle body floor 2 by bolts Bo and washers Ws fastened to the vehicle body floor 2 (FIG. 11). Here, a long hole-like mounting hole 114 is formed at the rear end of the first plate portion 112, and the bolt Bo and the washer Ws fastened to the vehicle body floor 2 in advance are fitted into the mounting hole 114, A mounting unit 110 is disposed on the vehicle body floor 2.

  The intermediate portion 114b in the longitudinal direction of the mounting hole 114 is somewhat wider than the front end portion 114a and the rear end portion 114c. Using this configuration, when the bolt Bo and the washer Ws are fitted into the mounting hole 114, the bolt Bo and the washer Ws are first passed through the longitudinal intermediate portion 114b of the mounting hole 114, and then the bolt Bo is attached to the mounting hole. The mounting unit 110 is positioned by shifting the position of the mounting unit 110 so as to be fitted to the front end portion 114 a of the longitudinal direction 114.

  In addition, a lock portion 101 of the striker lock mechanism 100 is attached to a substantially central portion in the longitudinal direction of the first plate portion 112. The lock portion 101 includes a hook-shaped lock piece 102 and a housing 103 that accommodates the lock piece 102 in a swingable state. When the lock piece 102 is engaged with a striker 105 described later, the seat cushion 10 is fixed on the vehicle body floor 2 at the seating position. On the other hand, when the lock piece 102 swings, the striker 105 comes out of engagement with the lock piece 102, and the seat cushion 10 is released from the fixed state on the vehicle body floor 2 and is movable. It becomes.

  Further, the first plate portion 112 has a standing wall portion 112a on one side thereof, and the above-described storage operation belt-like member is located slightly ahead of the mounting position in the standing wall portion 112a. A slit 112b for passing ST2 is formed. The band member ST2 for storing operation passed through the slit 112b is disposed on the first plate portion 112 so as to intersect the first plate portion 112. In addition, one end of the cable C is connected to the end of the storing operation band member ST2 (the end on the inside of the vehicle 1 when viewed from the first plate portion 112). A route defining portion 112c for defining the routing route is provided at an appropriate interval on a side portion of the first plate portion 112 (a side portion opposite to the side where the standing wall portion 112a is located).

  The other end of the cable C is connected to a connecting piece 104 that is connected to the lock piece 102 described above. As a result, when the storage operation band member ST2 is pulled, the cable C pulls the lock piece 102 via the connecting piece 104. As a result, the lock piece 102 swings, and the engagement between the lock piece 102 and the striker 105 occurs. The match will be released.

  On the other hand, in the mounting plate 111, the second plate portion 113 as a fixing member extending along the left-right direction of the vehicle 1 (the width direction of the vehicle seat S1) is a portion that forms the base of the movable unit 120. A submarine bracket 115 is provided at the center in the longitudinal direction to prevent a submarine phenomenon in which an occupant seated on the seat cushion 10 enters under the waist belt in the event of a vehicle 1 collision.

The submarine bracket 115 includes a pair of standing portions 115a made of a plate-like member that rises from the upper surface of the second plate portion 113, and a connecting portion 115b that connects the pair of standing portions 115a.
As described above, since the submarine bracket 115 includes the pair of standing portions 115a, the second plate portion 113 to be attached can be reinforced and the rigidity against the load from the occupant can be improved. Furthermore, since the pair of standing portions 115a are connected by the connecting portion 115b, the standing portion 115a, the connecting portion 115b, and the second plate portion 113 form a closed cross-sectional structure. Therefore, the rigidity of the second plate portion 113 can be further improved as compared with the configuration including only the standing portion 115a.

  The standing portion 115a of the submarine bracket 115 is disposed in the front-rear direction so as to sandwich a rotation shaft 126A of a link 121 described later. That is, the rotation shaft 126A is disposed between the pair of standing portions 115a in a side view. In this manner, by sandwiching the rotating shaft 126A to which a large load is applied by the standing portion 115a, it is possible to improve the rigidity around the rotating shaft 126A and to stably rotate the link 121.

(Configuration of movable unit 120)
The movable unit 120 has a substantially portal structure and is bolted to the second plate portion 113 of the mounting plate 111. The movable unit 120 includes a pair of links 121, a pair of pipe rods 122 as guide members, a mounting bracket 124 for mounting the seat cushion 10, and a connecting bar 123 that is installed on the mounting bracket 124 and connects the links 121. And a pair of support mechanisms 125 that rotatably support the link 121 and the pipe rod 122. These components are combined so as to be integrated as a unit, and when they are attached to the second plate portion 113 of the attachment plate 111, they are integrally attached as a unit.

  Each of the pair of links 121 spaced apart in the left-right direction (sheet width direction) is a long body configured by subjecting a sheet metal member to processing such as bead processing. To position. Each link 121 is rotatably supported by fitting a rotation shaft 126A in a through hole (not shown) formed in the lower end portion thereof. Further, a connecting bar 123 as a connecting member for connecting the links 121 is attached to the upper end portion of each link 121. Further, a mounting bracket 124 is attached to the upper surface of each link 121 on the outer surface thereof. The connecting bar 123 and the mounting bracket 124 are attached to the upper end portion of the link 121 by bolting in a co-tightening manner.

  The mounting bracket 124 includes a mounting surface portion 124a to which the seat cushion 10 is fixed, and a side flange portion 124b extending from a side end portion of the mounting surface portion 124a. The side flange portion 124b is formed to extend from one end in the left-right direction of the mounting surface portion 124a, and is bent substantially perpendicular to the mounting surface portion 124a.

  The upper end portion of the link 121, the end portion of the connecting bar 123, and the upper end portion of the pipe rod 122 are fixed to the side flange portion 124b (more specifically, the inner surface of the side flange portion 124b). As described above, since the link 121, the connecting bar 123, and the ends of the pipe rod 122 are attached to the inner surface of the side flange portion 124b (the inner surface in the seat width direction of the vehicle seat S11), the link 121, Attachment portions of the connecting bar 123 and the pipe rod 122 are concentrated in one place. Therefore, even in the portion where the plurality of members are attached as described above, the space saving property is high without increasing the size of the attachment portion of each member.

  In the side flange portion 124b, a recess 124c is formed between the fixing position of the connecting bar 123 and the fixing position of the pipe rod 122. Thus, since the recessed part 124c is formed in the side flange part 124b, compared with the case where the recessed part 124c is not formed, the mounting bracket 124 can be reduced in weight.

  On the other hand, the mounting surface portion 124a is not a smooth flat surface but includes a bent portion 124d that is bent along the left-right direction. As described above, the rigidity of the mounting bracket 124 can be improved by providing the bent portion 124d instead of making the mounting surface portion 124a of the mounting bracket 124 flat.

  The distance between the upper ends of the pair of links 121 attached to the mounting bracket 124 is formed larger than the distance between the lower ends. As a result, the distance between the pair of mounting brackets 124 can also be ensured to be large, so that the seat cushion 10 can be stably supported.

  The link 121 has a first bent portion 121c formed at the middle portion in the longitudinal direction. The first bent portion 121c is bent in a Z-shape when viewed from above so that the upper end portion of the link 121 expands in the left-right direction. With this configuration, in the links 121 arranged in pairs, the distance between the upper end portions is larger than the distance between the lower end portions.

In addition, the link 121 includes a second bent portion 121d formed continuously with the first bent portion 121c. In this manner, not only the first bent portion 121c but also the second bent portion 121d is provided, and the first bent portion 121c and the second bent portion 121d are continuously provided. The rigidity of the link 121 is improved.
Moreover, since the 1st bending part 121c and the 2nd bending part 121d are continuously formed so that it may cross | intersect, the rigidity of the link 121 can further be improved.

  Further, as shown in FIG. 15, a reinforcing collar 121e is integrally formed at the lower end of the link 121 (in the vicinity of the rotating shaft 126A), and the vicinity of the rotating shaft 126A is reinforced. 121 can be rotated stably. Further, a base bracket 127 is provided outside the reinforcing collar 121e in the left-right direction (seat width direction). The configuration of the base bracket 127 will be described later.

The distance between the pair of links 121 is formed larger than the width of the headrest 30 provided above the seat back 20. Further, the distance from the first bent portion 121 c of the link 121 to the lower end portion of the link 121 is formed larger than the thickness of the headrest 30.
With the configuration described above, when the vehicle seat S11 is stored, the headrest 30 can be stored between the links 121, so that the vehicle seat S11 can be stored compactly.

  Each of the pair of pipe rods 122 is a long body arranged in parallel with the link 121 in the front-rear direction, and the rotation shaft 126B is fitted into a through hole (not shown) formed in the lower end portion thereof. Thus, the link 121 is supported so as to be rotatable in the same direction as the rotation direction of the link 121. A mounting bracket 124 is pinned to the upper end of each pipe rod 122. That is, in the present embodiment, the seat cushion 10 is supported by the pair of links 121 and the pair of pipe rods 122 via the mounting bracket 124. Each pipe rod 122 is rotated in the same direction as the rotation direction of the link 121 following the rotation of the link 121.

  When the seat cushion 10 is in the sitting posture (that is, in the state shown in FIG. 10), the end of the pipe rod 122 fixed to the mounting bracket 124 is ahead of the end of the link 121 fixed to the mounting bracket 124. Is arranged. Thus, by disposing the highly rigid link 121 on the rear side, the link 121 and the pipe rod 122 can be stably rotated when the seat cushion 10 is returned to the seating posture.

  The pipe rod 122 is a member disposed substantially parallel to the link 121, but is formed shorter than the link 121. When the seat cushion 10 is stored, the pivot 121A of the link 121 and the pivot 126B of the pipe rod 122 are assembled in a substantially equal height along the front-rear direction. 122 can rotate stably.

  The pipe rod 122 is mainly composed of a metal linear member or tubular member. It is preferable to form the pipe rod 122 by a tubular member because rigidity is improved. It should be noted that both ends of the pipe rod 122 are flattened by pressing, so that fixing to other members is facilitated. In this way, the pipe rod 122 can be manufactured at low cost by configuring it with a linear member or a tubular member. Further, since the configuration of the pipe rod 122 is simplified, the manufacturing process is not complicated, which is preferable.

  Furthermore, a part of the pipe rod 122 is curved. The bending direction is formed so as to bulge to the side opposite to the side on which the link 121 is disposed. With this configuration, contact between the link 121 and the pipe rod 122 can be avoided within a movable range from the seating position to the flip-up position. As a result, the link 121 and the pipe rod 122 can be rotated more stably.

  The pipe rod 122 is disposed below the connecting bar 123 when the seat cushion 10 is stored. More specifically, the end of the pipe rod 122 attached to the mounting bracket 124 is disposed below the connecting bar 123. Thus, by arranging the pipe rod 122 below the connecting bar 123, it is preferable that the periphery of the pipe rod 122 is not enlarged when the seat cushion 10 is stored.

  Further, of the pair of links 121 and the pipe rod 122, the lower surface of the mounting bracket 124 attached to the link 121 and the pipe rod 122 facing the outside of the vehicle 1 (more specifically, formed on the mounting surface portion 124a). The striker 105 of the striker lock mechanism 100 described above is attached to the bent portion 124d). When the link 121 and the pipe rod 122 are rotated so as to fall backward as viewed from the rotation shafts 126A and 126B, the striker 105 is provided on the mounting plate 111 (more specifically, the first plate portion 112). It will reach a position where it can engage with the lock piece 102 of the lock part 101.

  The striker 105 is attached to the opposite side of the surface of the side flange portion 124b where the link 121 and the pipe rod 122 are attached. The link 121 and the pipe rod 122 are fixed inside the side flange portion 124b in the left-right direction (sheet width direction), and the striker 105 is attached outside the side flange portion 124b in the left-right direction (sheet width direction). Thus, since the striker 105 is provided on the outer side in the left-right direction (sheet width direction), the striker 105 does not interfere with the link 121 and the pipe rod 122. Furthermore, since the striker 105 is provided outside the link 121 and the pipe rod 122, the distance between the pair of links 121 constituting the seat width direction and the distance between the pair of pipe rods 122 may increase. Not preferred.

  The striker 105 is bent so as to extend in the horizontal direction, and engages with the lock piece 102. The striker 105 extends from the both ends of the hook portion 105 a to the mounting bracket 124 side and is attached to the mounting bracket 124. Mounting portion 105b. The hook portion 105 a is disposed between the end portion of the link 121 attached to the mounting bracket 124 (more specifically, the side flange portion 124 b) and the end portion of the pipe rod 122.

  Thus, the hook portion 105a of the striker 105 is disposed between the end portion of the link 121 and the end portion of the pipe rod 122 that are rotatably attached, so that the occupant is seated on the seat cushion 10. At that time, the seating load can be stably received.

  Further, the attachment portion 105 b of the striker 105 is fixed to the bent portion 124 d of the mounting bracket 124. More specifically, the end portion (upper end) of the attachment portion 105b of the striker 105 is fixed to the bent portion 124d of the mounting bracket 124 by a technique such as welding. Therefore, since the attaching part 105b of the striker 105 is fixed to the bending part 124d having high rigidity, the rigidity with respect to the seating load of the occupant is further improved. In addition, it is preferable that the end portion of the attachment portion 105 b fixed to the mounting bracket 124 is bent along the mounting bracket 124, and the bent portion is fixed to the bent portion 124 d of the mounting bracket 124.

(Configuration of support mechanism 125)
Each of the pair of support mechanisms 125 supports the link 121 and the pipe rod 122 in a rotatable manner, and a second plate portion 113 is provided below the link 121 and the pipe rod 122. As shown in FIGS. 4, 10, and 11, the support mechanism 125 includes a base bracket 127, a spiral spring 128, and a damper rubber 129 in addition to the rotation shafts 126 </ b> A and 126 </ b> B described above.

  The base bracket 127 is a substantially Z-shaped sheet metal member in a top view, forms a base of the movable unit 120, and is bolted to the second plate portion 113 of the mounting plate 111. Further, a portion of the base bracket 127 that extends along the front-rear direction of the vehicle 1 is a standing wall portion 127a, and the rotation shafts 126A and 126B are fixed to the standing wall portion 127a.

  The rotation shaft 126A of the link 121 and the rotation shaft 126B of the pipe rod 122 are provided on the same horizontal plane. More specifically, the axis (rotation center axis) of the rotation shaft 126A and the rotation shaft 126B is provided on the same horizontal plane (see FIGS. 4 and 10). As described above, since the rotation shaft 126A and the rotation shaft 126B are provided on substantially the same horizontal plane, an increase in size in the height direction can be suppressed.

  The link 121 and the pipe rod 122 are fixed inside the standing wall 127a in the left-right direction (sheet width direction). Thus, the link 121 and the pipe rod 122 can be protected from external force by attaching the link 121 and the pipe rod 122 to the inside of the standing wall 127a. Moreover, it is suitable, without enlarging the magnitude | size of the sheet | seat width direction of vehicle seat S11.

  The base bracket 127 also includes a fixing portion 127b that is fixed to the second plate portion 113 (the vehicle body floor 2). The standing wall portion 127a is formed by bending substantially vertically from the fixing portion 127b. Yes.

  The fixing portions 127b are provided at two places via the standing wall portion 127a, and the respective fixing portions 127b are fixed to the second plate portion 113 (the vehicle body floor 2) by locking means such as bolts. At this time, the locking means is arranged on a diagonal line, and the rotation shaft 127A of the link 121 is arranged on the diagonal line. With such a configuration, the link 121 can be stably rotated.

  Further, the locking means fastened to the one fixed portion 127b is attached on the substantially same line as the standing portion 115a disposed forward of the pair of standing portions 115a of the submarine bracket 115. Yes. More specifically, the joint point between the standing portion 115a and the second plate portion 113 disposed in front and the locking means fastened to the fixing portion 127b are disposed substantially on the same line. And the straight line which passes through the junction of the standing part 115a and the locking means is configured to be substantially perpendicular to the extending direction of the link 121 (see FIG. 15).

  Further, the locking means fastened to the other fixing portion 127b is attached on the substantially same line as the standing portion 115a disposed at the rear of the pair of standing portions 115a of the submarine bracket 115. More specifically, a joint point between the standing portion 115a and the second plate portion 113 disposed on the rear side and a locking means fastened to the fixing portion 127b are disposed on substantially the same line. A straight line passing through the joining point (joining portion) of the standing portion 115a and the locking means is configured to be substantially perpendicular to the extending direction of the link 121.

  As described above, the standing portion 115a of the submarine bracket 115 and the locking means for fixing the base bracket 127 are locked in the same straight line, so that a pair of base brackets arranged apart from each other on the left and right sides. Since the 2nd board part 113 between 127 is reinforced, the rigidity with respect to a load can be improved.

  The base bracket 127 is disposed at a position that substantially overlaps the spiral spring 128 in the front-rear direction. Thus, since the base bracket 127 and the spiral spring 128 are configured not to overlap in the height direction, the support mechanism 125 can be made compact.

As shown in FIG. 15, the spiral spring 128 is provided above the opening 113a. In other words, the opening 113a is provided at a position facing the spiral spring 128 in the vertical direction. With such a configuration, the spiral spring 128 can be brought close to the second plate portion 113 in the height direction without contacting (buffering) the spiral spring 128 and the second plate portion 113. . Therefore, the attachment height of the spiral spring 128 does not increase, which is preferable.
Further, a spiral spring 128 may be disposed in the opening 113a. It is preferable to arrange the spiral spring 128 in the opening 113a because the portion to which the spiral spring 128 is attached is further compacted in the height direction.

  Further, by forming the opening 113 a in the second plate portion 113, contact between the spiral spring 128 and the second plate portion 113 can be avoided. As a result, it is possible to prevent the generation of abnormal noise caused by the contact between the spiral spring 128 and the second plate portion 113, which is preferable.

  The damper rubber 129 contacts the front end of the link 121 when the link 121 is rotated forward by the urging force of the spiral spring 128 to reach the front limit position, and absorbs an impact generated in the link 121. The damper rubber 129 is fixed to the above-described base bracket 127 so as to be located somewhat forward of the portion of the link 121 that becomes the pivot point.

  In the present embodiment, in order to prevent the damper rubber 129 from being broken due to the contact (collision) of the link 121 with the damper rubber 129, in the longitudinal direction of the link 121, the portion in the position in contact with the damper rubber 129 ( Hereinafter, the contact portion 121a) is bent to increase the plate thickness, thereby ensuring a large area for contact with the damper rubber 129. Therefore, the contact portion 121a can be stably brought into contact with the damper rubber 129. Further, since the front end can be rounded by bending the contact portion 121a, it is possible to prevent the damper rubber 129 from being damaged when the contact portion 121a contacts the damper rubber 129.

  Of the pair of support mechanisms 125, the support mechanism 125 located outside the vehicle 1 is provided with a spiral spring 128. The spiral spring 128 is a biasing member that biases the link 121 to tilt forward. One end of the spiral spring 128 is locked to the rotating shaft 126A, and the other end is a link in a state where the link 121 is tilted to the rear side (in other words, a state before the seat cushion 10 jumps up). It is latched by the protrusion part (not shown) protruded from the side surface of 121.

  With the above configuration, when the striker 105 and the lock piece 102 are engaged, the seat cushion 10 receives the urging force of the spiral spring 128 via the link 121 (in other words, the spiral spring 128). It will be held in the seated position (against the biasing force). On the other hand, when the engagement between the striker 105 and the lock piece 102 is released, the urging force of the spiral spring 128 causes the link 121 to rotate forward so that the seat cushion 10 jumps up toward the flip-up position. Become.

  In the case shown in FIGS. 4, 10, and 11, the spiral spring 128 is provided for only one of the pair of links 121. In contrast, the spiral spring 128 may be provided.

  Furthermore, in this embodiment, the insertion hole 121b is formed in the longitudinal direction halfway position of one link 121 (link 121 located outside the vehicle 1), and the cable C is inserted into the insertion hole 121b. One end of is inserted. The other end of the cable C is connected to the arrange unit 80. Therefore, when the seat cushion 10 is flipped up, the link 121 rotates to pull the cable C coupled to the link 121. Finally, in the arrangement unit 80 to which the cable C is connected, Each part of the unit operates by using the traction force of the cable C.

<< Configuration of first plate portion 112 and second plate portion 113 >>
In the vehicle seat S1 that can be switched between a seating posture and a storage posture in which the seat is tilted forward, the seat cushion 10 is attached to the vehicle body floor 2 with respect to the configuration shown in FIGS. Will be described below.

  The mounting plate 111 includes a first plate portion 112 serving as a mounting member and a second plate portion 113 serving as a fixing member disposed so as to overlap the first plate portion 112 and is assembled to the vehicle body floor 2. It is done. Further, the bolt Bo and washer Ws as locking members provided in advance on the vehicle body floor 2 side and the mounting hole 114 as the locking portion formed in the first plate portion 112 are engaged, and the bolt Bo is fastened. As a result, the first plate portion 112 is fixed to the vehicle body floor 2.

  The first plate portion 112 is disposed along the extending direction of the link 121, and the front end portion of the first plate portion 112 is disposed so as to overlap the end portion of the second plate portion 113. It is fixed to the vehicle body floor 2 in an L shape. When the seat cushion 10 is in the seating posture, the first plate portion 112 extends rearward from the link 121. That is, the first plate portion 112 is formed longer than the link 121 and extends rearward from the mounting bracket 124 and the connecting bar 123 attached to the upper end of the link 121.

As described above, the first plate portion 112 extending in the front-rear direction is extended to the rear of the link 121, and the mounting plate 111 including the first plate portion 112 and the second plate portion 113 is attached to the link 121. It is formed to be large. The mounting plate 111 fixed to the vehicle body floor 2 in an L shape when viewed from above is provided with the movable unit 120 thereabove, so that the side on which the mounting plate 111 is not provided (indicated by a bold line in FIG. 16). It is easy to tilt in the direction of the arrow), but by securing a large length of the first plate portion 112, the movable unit 120 (including the mounting unit 110) provided above the mounting plate 111 is tilted. Can be prevented.
As a result, the seat cushion 10 can be prevented from being easily tilted, so that the support rigidity is improved with respect to the load of the occupant.

  One end (front end) of the first plate portion 112 is disposed below one end of the second plate portion 113 and is disposed at a position sandwiched between the vehicle body floor 2 and the second plate portion 113. In this way, by adopting a configuration in which the front end portion of the first plate portion 112 is pressed downward by the second plate portion 113, it is possible to prevent the front end portion of the first plate portion 112 from being lifted upward. Thereby, it is possible to prevent the members such as the link 121 and the pipe rod 122 from being inclined (tilted) in the direction of the thick arrow in FIG.

The second plate portion 113 is provided with a plurality of boss-like portions (bulging portions) 113c protruding downward, and the boss-like portion 113c is fixed to the vehicle body floor 2 by the locking means. At this time, the portion other than the boss-like portion 113c (planar portion) is separated from the vehicle body floor 2 by the amount of the boss-like portion 113c. Therefore, the first plate portion 112 is fitted in this separated space. Can be worn.
As a result, the mounting configuration of the first plate portion 112 and the second plate portion 113 can be made compact.

  The first plate portion 112 is provided below one link 121 (more specifically, the link 121 provided outside in the seat width direction) of the pair of links 121. At this time, the link 121 is disposed so as to fit between both end portions (inner end portion and outer end portion) of the first plate portion 112 in the left-right direction (sheet width direction).

  Thus, by disposing one link 121 of the pair of links 121 above the first plate portion 112, the link 121 is stably fixed to the vehicle body floor 2, and the mounting unit 110 and the movable unit 120. Can be made difficult to tilt.

  Furthermore, the front end portion of the first plate portion 112 (the portion overlapped with the second plate portion 113) is not a complete rectangular shape, but has a configuration in which a part is cut out. More specifically, the edge portion and the front end on the inner side in the sheet width direction of the first plate portion 112 are notched, and the spiral spring 128 is attached to the notched portion. And as shown in FIG. 15, in the part to which the spiral spring 128 is attached, since the 2nd board part 113 is also provided with the opening part 113a, the spiral spring 128 is closer to the vehicle body floor 2. Arranged. Therefore, it can suppress that the attachment part of the spiral spring 128 enlarges in a height direction.

  Since the front end portion of the first plate portion 112 is disposed outside the spiral spring 128 in the sheet width direction, and the front end portion of the first plate portion 112 is further pressed downward by the second plate portion 113, the mounting unit 110. Can be stably fixed to the vehicle body floor 2 and the movable unit 120 supporting the seat cushion 10 can be made more difficult to tilt.

The attachment hole 114 formed at the rear of the first plate portion 112 is a long hole formed at the rear end portion of the first plate portion 112, and the major axis direction thereof is along the longitudinal direction of the first plate portion 112. Is formed.
As shown in FIG. 13, the attachment hole 114 has an intermediate portion 114b in the longitudinal direction that is somewhat wider than the front end portion 114a and the rear end portion 114c. More specifically, the width of the front end portion 114a (the width indicated by a in FIG. 13) is the smallest, the width of the rear end portion 114c (the width indicated by c in FIG. 13), and the intermediate portion 114b. Mounting holes 114 are formed so as to gradually increase in the order of width (width indicated by b in FIG. 13).

  The intermediate portion 114b having the largest width is formed to have a width that allows the washer Ws to be inserted therein. Further, the width of the rear end 114c is formed so that the head of the bolt Bo can be inserted. Further, the width of the front end portion 114a is formed such that the shaft portion of the bolt Bo can be inserted and the head portion of the washer Ws and the bolt Bo cannot be inserted.

  Therefore, it is possible to allow the bolt Bo and the washer Ws to be inserted by configuring the mounting hole 114 to have a different internal width as described above, as compared to a case where the internal width is a long hole having a uniform internal width. In addition, the mounting hole 114 (first plate portion 112) can be sandwiched and locked between the bolt Bo and the washer Ws and the vehicle body floor 2. As a result, the first plate portion 112 can be easily assembled to the vehicle body floor 2.

  As shown in FIG. 14, at least a part of the mounting hole 114 is formed in a slope portion 112e formed by bending so as to rise from a mounting surface portion 112d attached in contact with the vehicle body floor 2. . More specifically, the widest intermediate portion 114b of the mounting hole 114 is formed so as to overlap the slope portion 112e. In addition, the horizontal part 112f extended further back than the slope part 112e is formed so that it may become a substantially horizontal plane.

  As described above, the intermediate portion 114b is formed so as to cover the inclined surface portion 112e, so that the first plate portion 112 is slid on the vehicle body floor 2 toward the bolt Bo protruding upward from the vehicle body floor 2 substantially vertically. By doing so, the mounting hole 114 and the bolt Bo can be engaged.

  The front end portion 114a is formed in the mounting surface portion 112d, and the first plate portion 112 is attached to the vehicle body floor 2 by inserting and fastening the shaft portion of the bolt Bo at an appropriate position of the front end portion 114a. Worn.

  In the prior art, a technique of attaching the vehicle seat S11 (S1) to a bolt hole formed in advance on the vehicle body floor 2 via a bracket provided with a substantially circular hole has been used. At this time, since the vehicle seat S11 (S1) is heavy, it is difficult to accurately place the vehicle seat S11 (S1) at the assembly position of the vehicle body floor 2, and there is a problem that the mounting operation cannot be easily performed. .

  However, according to the mounting structure of the vehicle seat S11 (S1) of the present invention, the mounting plate 111 (with the mounting hole 114 inserted through the bolt Bo and the washer Ws mounted on the vehicle body floor 2 once. The first plate portion 112) is placed and then slid to adjust the position. As a result, the vehicle seat S11 (S1) can be easily assembled.

  Since the seat cushion 10 (and the mounting unit 110 and the movable unit 120) is attached in advance above the first plate portion 112, the first plate portion 112 is attached to the vehicle body floor 2 before the bolt Bo is fastened. 1), the first plate part 112 is configured to easily tilt forward due to the load of the seat cushion 10. Accordingly, the bolt Bo attached to the vehicle body floor 2 side is inserted into and engaged with the front end portion 114a of the mounting hole 114, thereby preventing the first plate portion 112 from being tilted forward. As a result, positioning and assembling work can be easily performed on the vehicle body floor 2.

Furthermore, the 1st board part 112 is provided with the flange 112g bent upwards in the side (more specifically, the side in which the attachment hole 114 was formed).
Thus, providing the flange 112g in the vicinity of the mounting hole 114 is preferable without reducing the rigidity in the vicinity of the mounting hole 114.

  In addition, since the first plate portion 112 includes not only the flange 112g but also the mounting surface portion 112d and the inclined surface portion 112e, the first plate portion 112 is configured to have irregularities, and thus the rigidity of the first plate portion 112 with respect to external force Will improve. As a result, when assembled to the vehicle body floor 2, high rigidity can be provided.

  Furthermore, in the first plate portion 112, the width of the portion (rear end portion) where the mounting hole 114 is formed is formed wider than the other portion (specifically, the mounting surface portion 112d). A plurality of attachment holes 112h into which clips for attaching the cables C and the like can be inserted are formed in the portion.

In this way, by forming the width of the first plate portion 112 where the attachment hole 114 is formed wide, it is possible to prevent the rigidity of the first plate portion 112 from being lowered by the attachment hole 114.
Further, by providing the attachment hole 112h in the wide portion (mainly the horizontal portion 112f), it is possible to assemble another member (for example, cable C) provided in the vehicle seat S11. Therefore, the mounting hole 114 is provided at the rear end portion of the first plate portion 112 and the portion is formed wide so that not only the rigidity is prevented from being lowered due to the mounting hole 114 but also other members are disposed. Can be suitably performed.

  Furthermore, the first plate portion 112 is provided with an inclined surface portion 112e, but a rear horizontal portion 112f is spaced apart from the vehicle body floor 2 and extends substantially horizontally. Therefore, the rear side (horizontal portion 112f) of the first plate portion 112 further than the inclined surface portion 112e is disposed at a predetermined distance from the vehicle body floor 2, so that other members such as clips are disposed. Space is secured. Therefore, it is preferable to form the attachment hole 112h at the rear end portion of the first plate portion 112 because the space formed between the horizontal portion 112f and the vehicle body floor 2 is effectively utilized by the inclined surface portion 112e.

(First embodiment)
Hereinafter, the first embodiment will be described with respect to the configuration of the first plate portion 112, the second plate portion 113, and the connecting bar 123 with reference to FIG. In the plan view state (FIG. 16), the vertex on the inner side (right side in FIG. 16) of the rear end portion of the mounting surface portion 112d of the first plate portion 112 is defined as the first vertex 112i, and the second plate portion A rear end portion (a rear vertex) of the end portion of 113 on which the first plate portion 112 is not overlapped (not intersected) is defined as a second vertex 113b. The first vertex 112i and the second vertex 113b are points where the load is most easily applied to each of the first plate portion 112 and the second plate portion 113 when the occupant is seated.

  In the first embodiment, the first plate portion 112 and the second plate portion 113 are each formed in a substantially rectangular shape. Then, the connecting point is more than the intersection P1 between the imaginary line (the line X in FIG. 16) connecting the first vertex 112i and the second vertex 113b and the connecting bar 123 (more specifically, the central axis of the connecting bar 123). The central portion P <b> 2 in the extending direction of the bar 123 is disposed at a position close to the first plate portion 112. That is, the intersection point P1 is disposed on the end portion side of the second plate portion 113 on the side where the first plate portion 112 is not overlapped with respect to the center portion P2. In other words, the intersection point P1 is provided closer to the second vertex 113b than the center portion P2.

In this way, the intersection P1 is arranged at a position farther from the mounting plate 111 (first plate portion 112) than the center portion P2 of the connecting bar 123, which is the position where the load is most affected when the occupant is seated. It becomes easy to balance the load of the seat cushion 10, and the movable unit 120 can be made difficult to tilt.
That is, the intermediate point (center portion P2) of the pair of mounting brackets 124 that support the seat cushion 10 is disposed closer to the first plate portion 112 than the intersection point P1, thereby supporting the occupant load applied to the seat cushion 10. It becomes easy to do.

(Second Embodiment)
Furthermore, a second embodiment will be described with reference to FIG. Unlike the first embodiment in which the second plate portion 113 is formed in a substantially rectangular shape, the second embodiment is characterized in that the second plate portion 213 is formed in an L shape in plan view. Other points (member shape, member arrangement) are the same as those in the first embodiment, and the description thereof is omitted.

  The second plate portion 213 includes an extended portion 213 a that extends to the rear side at the end opposite to the end overlapped with the first plate portion 112. The extending portion 213a extends in parallel with the extending direction of the first plate portion 112, and is configured by a planar plate material. The length of the extending portion 213a in the front-rear direction is formed to be approximately half of the length of the first plate portion 112 in the front-rear direction.

  And like the said 1st Embodiment, the 1st vertex 112i and the 2nd vertex 213b (The 2nd vertex 213b is a rear end part of the extension part 213a, and points out the vertex of a sheet | seat width direction outer side. The center portion P2 in the extending direction of the connecting bar 123 is closer to the first plate portion 112 than the intersection point P1 between the imaginary line (line X in FIG. 17) and the connecting bar 123. Be placed. That is, the intersection point P1 is disposed on the end portion side of the second plate portion 213 on the side where the first plate portion 112 is not overlapped with the center portion P2. In other words, the intersection point P1 is provided closer to the second vertex 213b than the center portion P2.

  Thus, by providing the extension part 213a in the 2nd board part 213, the part (namely, the 1st board part 112, the 2nd board part 213, and the extension part 213a is fixed to the vehicle body floor 2). Is larger than that of the first embodiment, and the intersection P1 moves away from the first plate portion 112. Therefore, the stability is further improved, and the movable unit 120 provided on the upper side does not easily tilt.

  In addition, in FIG. 17, although the extension part 213a has illustrated the structure integrally formed with the 2nd board part 213 extended in a sheet | seat width direction, you may comprise separately. When the extended portion 213a is formed separately from the second plate portion 213, one end of the extended portion 213a is arranged below the second plate portion 213 extended in the sheet width direction. Good (see third embodiment described later). As described above, when the extending portion 213 a is sandwiched between the second plate portion 213 and the vehicle body floor 2, the first plate portion 112 is also disposed below the other end side of the second plate portion 213. Therefore, the second plate portion 213 is easily disposed horizontally, and can be stabilized.

(Third embodiment)
Hereinafter, a third embodiment will be described with reference to FIG. The third embodiment differs from the first embodiment in which the substantially rectangular first plate portion 112 and the second plate portion 113 are combined to form an L shape in plan view, and further includes a third plate portion 116. It is characterized by being. Other points (member shape, member arrangement) are the same as those in the first embodiment, and the description thereof is omitted.

  The third plate portion 116 extends substantially parallel to the first plate portion 112 and has a length substantially equal to that of the first plate portion 112. The first plate portion 112 and the third plate portion 116 that are formed to have substantially the same width are disposed on both ends of the second plate portion 113 that is formed in a substantially rectangular shape. Therefore, the first plate portion 112, the second plate portion 113, and the third plate portion 116 are combined to form a substantially U shape in plan view.

  As with the first plate portion 112, the third plate portion 116 is preferably configured such that the front end portion is disposed below the second plate portion 113 and the second plate portion 113 is held substantially horizontally. The plate portion 116 and the second plate portion 113 may be integrally formed. When formed integrally, the number of parts is reduced, so that the assembling property is improved.

  As described above, the first plate portion 112, the second plate portion 113, and the third plate portion 116 are combined to form a substantially U-shape in plan view symmetrical in the left-right direction (sheet width direction). The link 121, the pipe rod 122, and the like disposed above the plate portion 112, the second plate portion 113, and the third plate portion 116 can be stably held.

(Fourth embodiment)
Furthermore, a fourth embodiment will be described with reference to FIG. In the fourth embodiment, in addition to the first embodiment in which the substantially rectangular first plate portion 112 and the second plate portion 113 are combined to form an L shape in plan view, the first plate portion 112 and the second plate portion A connecting frame 117 that connects each end of the two plate portions 113 is provided. Other points (member shape, member arrangement) are the same as those in the first embodiment, and the description thereof is omitted.

  The connection frame 117 is a member that connects the first vertex 112i and the second vertex 113b of the first embodiment, and is for improving the rigidity of the first plate portion 112 and the second plate portion 113. Is provided. The connection frame 117 is constructed between the rear end portion of the first plate portion 112 and the end portion on the opposite side to the end portion of the second plate portion 113 on which the first plate portion 112 is overlapped.

  The connection frame 117 is a long member made of metal or resin, and as shown in FIG. 20, is formed of a U-shaped plate material having a bottom surface 117a and a side wall 117b. And in order to improve the rigidity of the connection frame 117, the bead 117c is formed in the bottom face 117a along the extending direction.

  Furthermore, a plurality of concave grooves 117d are formed on the bottom surface 117a along the extending direction of the beads 117c. In this way, by forming the uneven shape on the bottom surface 117a of the connection frame 117, the synthesis of the connection frame 117 can be improved. In addition, in order to improve the rigidity of the connection frame 117, the connection frame 117 may have a monaca structure (closed section structure).

  When the connection frame 117 is installed on the first plate portion 112 and the second plate portion 113, the connection frame 117 is disposed with the bottom surface 117 a facing downward. Then, both end portions of the bottom surface 117a are fixed to the first plate portion 112 and the second plate portion 113 (further, the vehicle body floor 2) by locking means.

  In this way, the end portions of the first plate portion 112 and the second plate portion 113 arranged in a substantially L shape in plan view are connected by the connecting frame 117, so that the overall shape becomes a substantially triangular shape in plan view. The rigidity of the unit 110 is further improved. The mounting unit 110 is firmly fixed to the vehicle body floor 2 by improving the rigidity of the mounting unit 110. Therefore, the movable unit 120 provided above the attachment unit 110 can be prevented from tilting.

(Fifth embodiment)
Furthermore, a fifth embodiment will be described with reference to FIG. In the fifth embodiment, the first plate portion 112 and the second plate portion 213 are further added to the second embodiment in which the substantially rectangular first plate portion 112 and the substantially L-shaped second plate portion 213 are combined. It is characterized by comprising a connecting frame 117 for connecting the respective end portions of the above. In addition, since points (member shape, member arrangement) other than these are the same as those in the above-described embodiment, description thereof is omitted.

  The connection frame 117 is disposed so as to connect the first vertex 112i and the second vertex 213b. More specifically, the connection frame 117 is constructed between the rear end portion of the first plate portion 112 and the rear end portion of the extending portion 213a. With this configuration, the rigidity of the first plate portion 112 and the second plate portion 213 can be improved.

  As described above, the connection frame 117 is installed between the first plate portion 112 and the extended portion 213a, so that the overall shape is substantially trapezoidal in plan view, and the rigidity of the first plate portion 112 and the extended portion 213a is further increased. Can be improved. Therefore, the attachment unit 110 is firmly attached to the vehicle body floor 2, and as a result, the movable unit 120 can be prevented from tilting.

(Sixth embodiment)
Furthermore, the sixth embodiment will be described with reference to FIG. In addition to the third embodiment in which the first plate portion 112, the second plate portion 113, and the third plate portion 116 having a substantially rectangular shape are combined, the sixth embodiment further includes the first plate portion 112 and the third plate portion. A connecting frame 117 that connects each end of 116 is provided. In addition, since points (member shape, member arrangement) other than these are the same as those in the above-described embodiment, description thereof is omitted.

  The connection frame 117 is disposed so as to connect between the first plate portion 112 and the rear end portions of the third plate portion 116. In other words, the connection frame 117 is provided substantially in parallel with the extending direction of the second plate portion 113 and the connection bar 123. More specifically, the connection frame 117 is constructed between the rear end portion of the first plate portion 112 and the rear end portion of the third plate portion 116. With this configuration, the rigidity of the first plate portion 112, the second plate portion 113, and the third plate portion 116 can be improved.

  As described above, the connecting frame 117 is installed between the first plate portion 112 and the third plate portion 116, so that the mounting unit 110 has a generally rectangular shape in plan view as a whole, and the first plate portion 112 and the third plate. The rigidity of the part 116 can be further improved. Therefore, the attachment unit 110 is firmly attached to the vehicle body floor 2, and as a result, the movable unit 120 can be prevented from tilting.

DESCRIPTION OF SYMBOLS 1 Vehicle, 2 Car body floor, 3 Cargo compartment part 10 Seat cushion, 10a Overhang | projection part 11 Cushion frame 20 Seat back, 20a Base part, 20b Rotating shaft 21 Seat back frame 22 Pan frame 23 Pipe frame 25 Pillar collapse regulation part 30 Headrest 31 Internal frame, 31a Leg portion, 31b Lower end flange portion 32 Guide, 32a Lower end flange 33 Pillar 40 Armrest 50 Headrest turning mechanism 51 Casing 52 Lock member 54 Slide member, 54a Longitudinal end portion 60 Seat cushion jumping mechanism 70 Seat Back fall mechanism 77 Operation unit 80 Arrangement unit 90 Seat back support unit 100 Striker lock mechanism 101 Lock unit 102 Lock piece 103 Housing 104 Connection piece 105 Striker, 105a Hook part, 105b Attachment part 110 Attachment unit 111 Attachment plate 112 First plate part (attachment member), 112a Standing wall part, 112b Slit, 112c Path defining part, 112d Attachment surface part, 112e Slope part, 112f Horizontal part, 112g Flange 112h Mounting hole, 112i First apex 113, 213 Second plate (fixing member), 113a Opening, 113b, 213b Second apex, 113c Boss area, 213a Extension part 114 Mounting hole (locking) Portion), 114a front end portion, 114b middle portion, 114c rear end portion 115 submarine bracket, 115a standing portion, 115b connecting portion 116 third plate portion 117 connecting frame, 117a bottom surface, 117b side wall, 117c bead, 117d concave groove 120 movable Unit 121 link, 121a contact part, 121b insertion hole, 1 1c first bent portion, 121d second bent portion, 121e reinforcing collar 122 pipe rod (guide member)
123 Connection bar (connection member)
124 mounting bracket, 124a mounting surface portion, 124b side flange portion, 124c concave portion, 124d bent portion 125 support mechanism 126A, 126B rotating shaft 127 base bracket, 127a standing wall portion, 127b fixing portion 128 spiral spring 129 damper rubber Bo bolt ( Locking member), Ws washer (locking member), C cable S1, S11, S12 Vehicle seat ST1, ST2 Storage operation band-like member P1 Intersection, P2 Center

Claims (5)

A vehicle seat flip-up mechanism formed so that a seat cushion can be switched between a normal seating posture and a storage posture in which the seat cushion is tilted forward.
A pair of long links that are spaced apart in the seat width direction and extend in the front-rear direction;
A pair of mounting brackets attached to the ends of the pair of links to support the seat cushion;
A connecting member constructed between the pair of mounting brackets;
A pair of support mechanisms for rotatably supporting the pair of links;
A mounting plate disposed below the pair of support mechanisms and locked to the vehicle body floor,
Mounting plate, said Ri Na is extended rearward than link, a fixed member that extends in the sheet width direction, disposed along the extending direction of the link with superimposed in said stationary member and one end And a mounting member
The vehicle seat flip-up mechanism , wherein the attachment member is overlapped on one end side of the fixing member and has an attachment surface portion that comes into contact with the vehicle body floor . The imaginary line connecting the apex on the inner side in the sheet width direction of the rear end portion of the mounting surface portion and the apex on the side of the rear end portion of the fixing member on which the mounting member is not overlapped, and the connecting member intersect in a top view. 2. The vehicle seat flip-up mechanism according to claim 1, wherein the mechanism is arranged on the other end side of the fixing member with respect to a central portion in the extending direction of the connecting member.   Of the pair of links, the link disposed on the side where the mounting member is attached is disposed between an outer end portion and an inner end portion of the mounting member in the sheet width direction. The vehicle seat flip-up mechanism according to claim 2.   4. The vehicle seat flip-up mechanism according to claim 2, wherein one end of the mounting member is disposed between the fixing member and the vehicle body floor. 5. At least one of the pair of support mechanisms has a spiral spring attached to the fixing member and biasing the link,
5. The vehicle seat according to claim 4, wherein the portion of the mounting member that is overlapped with the fixing member is disposed on the outer side in the seat width direction from the position where the spiral spring is attached. Bounce mechanism.

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