Seat cushion mounting structure and vehicle seat

Abstract

To facilitate mounting of a seat cushion.SOLUTION: According to this seat cushion mounting structure, a notch 42 is formed in an outer hinge bracket 40 that is fixed to a floor portion F of a vehicle body and to which a seat back 14 is connected, and an insertion locking tool 56 is attached to the floor portion of the vehicle body, on a vehicle front side of the outer hinge bracket 40. A wire frame 48 of a seat cushion 12 has a first locking portion 52 and a second locking portion 54. The first locking portion 52 is inserted into the notch 42 of the outer hinge bracket 40 from a vehicle upper side. In this inserted state, when the seat cushion 12 is slid toward the vehicle front side with respect to the floor portion F, the first locking portion 52 is retained in the notch 42 by a hook 44 and is locked to the outer hinge bracket 40. Due to the above-described slide of the seat cushion 12, the second locking portion 54 is inserted into and locked to the insertion locking tool 56 from the vehicle upper side.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and particularly to a seat cushion mounting structure for attaching a seat cushion to the floor portion of a vehicle body.

Background Art

[0002] In the seat mounting structure disclosed in Patent Document 1 below, a cross member bracket that extends in the vehicle width direction on the vehicle body floor portion and constitutes a center hinge comp is disposed, and a center bracket, a center hinge bracket, a side bracket, etc., which are attachment portions of a seat cushion and a seat back that constitute a vehicle seat, are provided on the cross member bracket, respectively.

[0003] When attaching the seat cushion to the vehicle body floor portion, first, the center bracket and the side bracket are fixed to the vehicle body floor portion. Then, the seat cushion is placed on the vehicle body floor portion in front of the center hinge comp. Next, when the seat cushion is slid to the rear side of the vehicle, the rear wire of the seat cushion slides on the hook of the side bracket and is inserted and arranged in the notch of the side bracket while being bent. The rear wire in the notch abuts against the upper end wall of the notch with tension applied, and is prevented from coming out of the notch by the hook. Next, the front wire of the seat cushion is inserted from above into a guide cap (insertion locking tool) provided in advance on the vehicle body floor portion and locked.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the prior art described above, when inserting the rear wire of the seat cushion into the notch of the side bracket, it is necessary to slide the seat cushion toward the rear of the vehicle, causing the rear wire to slide against the hook of the side bracket and bend, which increases the load required to slide the seat cushion. Therefore, there is room for improvement in terms of making the installation of the seat cushion easier.

[0006] In consideration of the above facts, the present invention aims to provide a seat cushion mounting structure and a vehicle seat that can facilitate the installation of seat cushions. [Means for solving the problem]

[0007] The seat cushion mounting structure of the first embodiment comprises a seat cushion having a wire frame, an outer bracket fixed to the floor of the vehicle body and to which the seat back is connected, and a push-in locking device attached to the floor on the vehicle front side of the outer bracket, wherein the outer bracket has a notch that opens toward the vehicle upward and has a hook formed in the opening, the wire frame has a first locking portion that is inserted into the notch from the vehicle upward and, when the seat cushion slides toward the vehicle front side relative to the floor in the inserted state, is prevented from coming out of the notch by the hook and is locked to the outer bracket, and a second locking portion that is inserted into the push-in locking device from the vehicle upward as the seat cushion slides.

[0008] According to the seat cushion mounting structure of the first embodiment, a notch is formed in the outer hinge bracket, which is fixed to the floor of the vehicle body and to which the seat back is connected, and a snap-in locking device is attached to the floor of the vehicle body on the vehicle front side of the outer hinge bracket. The wire frame of the seat cushion has a first locking part and a second locking part. The first locking part is inserted into the notch from the vehicle upper side. When the seat cushion is slid forward relative to the floor in this inserted state, the first locking part is prevented from coming out of the notch by the hook and is locked to the outer bracket. The second locking part is inserted into the snap-in locking device from the vehicle upper side as the seat cushion slides and is locked. In this embodiment, since it is not necessary to bend the first locking part or the second locking part of the wire frame when attaching the seat cushion to the floor, the attachment of the seat cushion to the floor can be made easier.

[0009] A vehicle seat of the second embodiment comprises, in the first embodiment, a seat cushion having a wire frame, an outer bracket fixed to the floor of the vehicle body, a seat back connected to the outer bracket, and a snap-in fastener attached to the floor on the vehicle front side of the outer bracket, wherein the wire frame is fastened to the outer bracket and the snap-in fastener by the seat cushion mounting structure of the first embodiment.

[0010] According to the second embodiment of the vehicle seat, the seat cushion has a wire frame, and the seat back is connected to an outer bracket fixed to the floor of the vehicle body. On the front side of this outer bracket, a snap-in fastener is attached to the floor of the vehicle body. The wire frame of the seat cushion is fastened to the outer bracket and the snap-in fastener by the seat cushion mounting structure of the first embodiment. Thus, the same effect as in the first embodiment can be obtained. [Effects of the Invention]

[0011] As described above, the present invention makes it possible to easily attach the seat cushion. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view showing a vehicle seat according to an embodiment. [Figure 2] This is a perspective view showing a part of the frame of a vehicle seat according to an embodiment. [Figure 3] This is a perspective view showing a part of the frame of a vehicle seat according to an embodiment. [Figure 4] Figure 3 is a perspective view showing a magnified portion of the configuration shown. [Figure 5] This is a cross-sectional view of a fastening device provided in a vehicle seat according to an embodiment. [Modes for carrying out the invention]

[0013] Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described with reference to Figures 1 to 5. Note that some reference numerals may be omitted in each figure for clarity. Furthermore, the arrows FR, LH, and UP, as indicated in each figure, indicate the front, left, and top, respectively, of the vehicle on which the vehicle seat 10 is mounted. Hereafter, when simply using the directions front / back, left / right, and up / down, these refer to directions relative to the vehicle.

[0014] As shown in Figure 1, the vehicle seat 10 according to this embodiment is a rear seat for three people and comprises a seat cushion 12 on which the vehicle occupants sit, a seat back 14 that supports the occupants' backs, and three headrests 16 that support the occupants' heads. The seat cushion 12 is fixed to the floor F of the vehicle body (see Figure 2; not shown in Figures other than 2) by the seat cushion mounting structure according to this embodiment. This vehicle seat 10 is located in front of the cargo area of ​​the vehicle. The front-rear, left-right, up-down directions of this vehicle seat 10 coincide with the front-rear, left-right, up-down directions of the vehicle.

[0015] The seatback 14 is, for example, a 6:4 split-folding type, divided into a left seatback 14L for two people and a right seatback 14R for one person. Two headrests 16 are attached to the upper end of the left seatback 14L, and one headrest 16 is attached to the upper end of the right seatback 14R.

[0016] As shown in Figures 2 and 3, the left seat back 14L is equipped with a seat back frame 18 made of metal pipes and plates. The seat back frame 18 comprises a pair of left and right side frame sections 20 extending vertically from the left seat back 14L, an upper frame section (not shown) connecting the upper ends of the left and right side frame sections 20 in the vehicle width direction, and an intermediate frame section 24 connecting the vertically intermediate parts of the left and right side frame sections 20 in the vehicle width direction. The seat back frame 18 is covered with a seat back pad (not shown) made of foam or the like. The seat back pad is covered with a seat back surface 26 (see Figure 1) made of cloth, leather or synthetic leather or the like.

[0017] A center hinge 28 is provided at the lower end of the right side frame section 20, and an outer hinge 34 is provided at the lower end of the left side frame section 20. The center hinge 28 has a recliner 30 attached to the lower end of the right side frame section 20 and a center B bracket 32 ​​connected to the lower end of the right side frame section 20 via the recliner 30. The outer hinge 34 has an outer B bracket 36 connected to the lower end of the left side frame section 20 via a connecting shaft 35. The center B bracket 32 ​​and the outer B bracket 36 are made of press-formed metal plates.

[0018] The center B bracket 32 is fixed to the floor part F of the vehicle body via the center hinge bracket 38, and the outer B bracket 36 is fixed to the floor part F via the outer hinge bracket 40. The outer hinge bracket 40 corresponds to the "outer bracket" in the present invention. The center B bracket 32, the outer B bracket 36, the center hinge bracket 38, and the outer hinge bracket 40 are here constituted by a press-formed metal plate. A lower frame part 25 extending in the vehicle width direction is fixed to the center hinge bracket 38 and the outer hinge bracket 40. The lower frame part 25 is here constituted by a metal square pipe material.

[0019] The left seat back 14L can be tilted forward and backward around the center hinge 28 and the outer hinge 34 with respect to the floor part F when the lock of the recliner 30 of the center hinge 28 is released. Although detailed description is omitted, the right seat back 14R is also connected to the floor part F of the vehicle body with basically the same configuration as the left seat back 14L. In FIG. 3, in the right seat back 14R, the same reference numerals are given to the same configuration as the left seat back 14L.

[0020] As shown in FIGS. 2 and 3, the outer hinge bracket 40 has a fixed wall part 40A fastened and fixed to the floor part F by means such as bolt fastening, and a vertical wall part 40B integrally extending upward from the outer end in the vehicle width direction of the fixed wall part 40A, and the cross section seen from the vehicle front-rear direction is substantially L-shaped. The fixed wall part 40A is in the shape of a long plate with the vehicle front-rear direction as the longitudinal direction and the vehicle up-down direction as the plate thickness direction.

[0021] The vertical wall portion 40B is in the shape of a long plate with the vehicle front-rear direction as the longitudinal direction and the vehicle left-right direction as the main plate thickness direction. At the upper end of the rear portion of the vertical wall portion 40B, the lower end of the outer B bracket 36 is fixed by means such as bolt fastening. The lower end of the outer B bracket 36 is overlapped from the outside in the vehicle width direction with respect to the upper end of the rear portion of the vertical wall portion 40B. At the upper end of the vertical wall portion 40B, a flange portion 40C bent inward in the vehicle width direction is formed.

[0022] As shown in FIG. 4, the fixed wall portion 40A and the vertical wall portion 40B extend forward of the flange portion 40C. As shown in FIGS. 2 to 4, at the front end of the vertical wall portion 40B, a notch 42 opening upward is formed. At the opening (upper part) of the notch 42, a hook 44 is formed. The hook 44 extends rearward from the front edge of the opening of the notch 42, and the opening of the notch 42 is narrowed by the hook 44. This notch 42 corresponds to the wire frame 48 (see FIGS. 2 and 3) of the seat cushion 12.

[0023] The wire frame 48 is formed by joining a plurality of bent metal wires by means such as welding and constitutes the framework of the seat cushion 12. This wire frame 48 is embedded in a cushion pad (not shown) constituting the cushion material of the seat cushion 12. The cushion pad is made of a foam such as urethane foam, for example, and is covered by a cushion skin 50 (see FIG. 1) which is the skin of the seat cushion 12.

[0024] At both ends in the left-right direction of the wire frame 48, first locking portions 52 (the first locking portion 52 on the right side is not shown) are provided respectively. The left and right first locking portions 52 are arranged near the center in the front-rear direction of the seat cushion 12. At the front end of the wire frame 48, two left and right second locking portions 54 (the second locking portion 54 on the right side is not shown) are provided.

[0025] The left and right first locking portions 52 are formed by bending a portion of the wire material constituting the wire frame 48 into a U-shape when viewed from the front and rear directions, and protrude downward from the lower surface of the cushion pad. As shown in Figure 4, each first locking portion 52 is composed of a pair of left and right vertically extending portions 52A that extend in the vertical direction, and a connecting portion 52B that connects the lower ends of the left and right vertically extending portions 52A in the left and right directions.

[0026] Similarly, the left and right second locking portions 54 are formed by bending a portion of the wire material constituting the wire frame 48 into a U-shape when viewed from the front-to-back direction, and protruding downward from the lower surface of the cushion pad. As shown in Figure 5, each second locking portion 54 consists of a pair of left and right vertically extending portions 54A (the left vertically extending portion 54A is not shown in Figure 5) and a connecting portion 54B that connects the lower ends of the left and right vertically extending portions 54A in the left-to-right direction.

[0027] The first locking portion 52 is positioned above the front end of the outer hinge bracket 40 and is inserted into the notch 42 of the outer hinge bracket 40. The connecting portion 52B of the first locking portion 52 is positioned below the hook 44 of the notch 42 and is restricted from upward displacement by the hook 44, and from forward displacement by the front end 46 of the vertical wall portion 40B.

[0028] The second locking portion 54 is locked to the floor portion F of the vehicle body using a plug-in locking device 56, as shown in Figure 2. The plug-in locking device 56 is inserted into a plug-in locking device 56 attached to the floor portion F of the vehicle body in front of the outer hinge bracket 40. The plug-in locking device 56 is made of, for example, resin and has a bottomed cylindrical shape as shown in Figure 5. The plug-in locking device 56 is inserted from above into a through hole 58 formed in the floor portion F. On both sides of the upper part of the plug-in locking device 56 in the front-rear direction, there is a flange portion 60 that contacts the edge of the through hole 58 from above and an elastic claw 62 that contacts the edge of the through hole 58 from below.

[0029] When the insertable locking device 56 is inserted into the through hole 58 from above, the front and rear elastic claws 62 slide against the edge of the through hole 58 and elastically deform in a direction that brings them closer together. When the flange portion 60 of the insertable locking device 56 contacts the edge of the through hole 58 from above, the front and rear elastic claws 62 elastically return to their original position and contact the edge of the through hole 58 from below. As a result, the insertable locking device 56 is prevented from coming out of the through hole 58 and is locked to the floor portion F.

[0030] The second locking portion 54 of the wire frame 48 is inserted into the inside of the insert locking device 56 from above. The inside of the insert locking device 56 is provided with a pair of locking claws 64 that face each other in the front-rear direction. When the second locking portion 54 is inserted into the inside of the insert locking device 56, the pair of locking claws 64 slide against the connecting portion 54B of the second locking portion 54 and elastically deform in a direction that separates them from each other. When the connecting portion 54B is inserted to the lower side of the pair of locking claws 64, the pair of locking claws 64 elastically return to their original position and contact the connecting portion 54B from above. As a result, the second locking portion 54 is prevented from coming loose from the insert locking device 56 and is locked in place.

[0031] When the first locking portion 52 of the wire frame 48 is inserted into the notch 42 of the outer hinge bracket 40, the second locking portion 54 of the wire frame 48 is positioned slightly rearward of the insert locking device 56. With the first locking portion 52 inserted into the notch 42, when the seat cushion 12 is slid forward, the connecting portion 52B of the first locking portion 52 is positioned below the hook 44. In this state, the connecting portion 52B is restricted from upward displacement by the hook 44 and from forward displacement by the front end 46 of the vertical wall portion 40B. As a result, the first locking portion 52 is locked to the outer hinge bracket 40 and connected to the floor portion F via the outer hinge bracket 40. Furthermore, when the seat cushion 12 is slid forward, the second locking portion 54 of the wire frame 48 is positioned above the insert locking device 56 and is inserted into the insert locking device 56. As a result, the second locking portion 54 is locked to the insert locking device 56 and connected to the floor portion F via the insert locking device 56.

[0032] (Summary of this embodiment) In the vehicle seat 10 with the above configuration, the outer hinge bracket 40, which is fixed to the floor of the vehicle body and to which the seat back 14 is connected, has a notch 42 formed in it, and a snap-in locking device 56 is attached to the floor of the vehicle body on the vehicle side forward of the outer hinge bracket 40. The wire frame 48 of the seat cushion 12 has a first locking portion 52 and a second locking portion 54.

[0033] When the seat cushion 12 is attached to the floor F, the first locking portion 52 of the wire frame 48 is inserted into the notch 42 from above. When the seat cushion 12 is slid forward relative to the floor F in this inserted state, the first locking portion 52 is prevented from coming out of the notch 42 by the hook 44 and is locked to the outer hinge bracket 40. The second locking portion 54 is inserted into the insert locking device 56 from above and locked as the seat cushion 12 slides. In this embodiment, since it is not necessary to bend the first locking portion 52 or the second locking portion 54 of the wire frame 48 when attaching the seat cushion 12 to the floor F, the attachment of the seat cushion 12 to the floor F can be made easier.

[0034] Furthermore, in the event of a frontal collision, the connecting portion 52B of the first locking portion 52 of the wire frame 48 engages with the hook 44 and front end 46 of the outer hinge bracket 40, thereby restricting the displacement of the first locking portion 52 toward the front and upward sides of the vehicle. This also maintains the locking state of the second locking portion 54 with respect to the insert locking device 56. As a result, the seat cushion 12 can be effectively prevented from falling off the floor F.

[0035] In the above embodiment, the case where the seat back 14 is a 6:4 split-folding type was described, but the seat back is not limited to this, and may be a 5:5 split-folding type, or may not be split-folding at all.

[0036] Furthermore, the present invention can be implemented with various modifications without departing from its spirit. Of course, the scope of the present invention is not limited to the embodiments described above. [Explanation of symbols]

[0037] 10 Vehicle seats 12 seat cushions 14 Seatback 40 Outer hinge bracket (outer bracket) 42 cuts 44 hooks 48 Wireframe 52 First locking part 54 Second locking section 56 Insertion locking device F Floor

Claims

1. A seat cushion having a wire frame, An outer bracket fixed to the floor of the vehicle body, to which the seat back is connected, A fastening device that is attached to the floor portion on the vehicle front side of the outer bracket, Equipped with, The outer bracket has a notch that opens upward towards the vehicle and has a hook formed in the opening. The aforementioned wireframe is The first locking portion is inserted into the notch from the upper side of the vehicle, and when the seat cushion is slid forward relative to the floor portion in the inserted state, the hook prevents it from coming out of the notch and locks it to the outer bracket. The sliding of the seat cushion causes a second locking portion to be inserted into and locked against the insertion locking device from the upper side of the vehicle, A seat cushion mounting structure having the following features.

2. A seat cushion having a wire frame, An outer bracket fixed to the floor of the vehicle body, The seat back connected to the outer bracket, A fastening device that is attached to the floor portion on the vehicle front side of the outer bracket, Equipped with, A vehicle seat in which the wire frame is secured to the outer bracket and the insertable fastener by the seat cushion mounting structure described in claim 1.

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