JP5911741B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat in which a seat cushion can be flipped forward.

  In the seat cushion hinge structure of an automobile shown in the following Patent Document 1, the seat cushion of the rear seat is connected to the floor panel via a two-bar linkage mechanism so as to be able to rise up (can be flipped forward). The two-joint link mechanism includes a bracket pivotally attached to the front end of the first link member and a second link member pivotally attached to the rear end of the first link member, and the seat cushion is moved forward. If it is made into a posture, the stopper provided in the 2nd link member will engage with the hook provided in the bracket. Thereby, the front raising angle of the seat cushion is regulated.

  On the other hand, the vehicle seat shown in Patent Document 2 below is a so-called double folding type. In this vehicle seat, the seat cushion is flipped forward, the seat bag is tilted forward and stored, and a hook with a belt attached to the bottom surface of the seat cushion is attached to a hooked portion provided on the back side of the seat bag. Hook. Thereby, the front raising angle of the seat cushion is regulated.

Japanese Utility Model Publication No. 4-31857 JP-A-11-105604

  However, in the vehicle seat cushion hinge structure disclosed in Patent Document 1, the two-bar link mechanism has a complicated configuration.

  Further, in the vehicle seat disclosed in Patent Document 2, it is necessary to hook the hook with the belt on the seat cushion side to the hooked portion on the seat bag side, and therefore, an operation for restricting the front raising angle of the seat cushion. It takes time and effort.

  In view of the above facts, an object of the present invention is to provide a vehicle seat capable of regulating the front raising angle of the seat cushion with a simple configuration and operation.

Vehicle seat according to the invention of claim 1 includes a seat cushion that is linked to flipped forward relative to the frame attached to the vehicle body floor, front and front end of the notated frame of said seat cushion And an angle regulating member that is stretched between the lower surface and regulates the angle of the seat cushion when the seat cushion is flipped forward.

In the vehicular seat according to claim 1, the flipping forward the seat cushion with respect to the frame, it is looped around an angle regulating member between the lower surface of the front end portion and the seat cushion frame thrusting (loosening (Strongly without) Thereby, the front flip-up angle of the seat cushion is regulated. The angle regulating member, for as long as they are wound between the lower surface of the front end portion and the seat cushion frame can be configured simply. In addition, since the front raising angle of the seat cushion is automatically regulated simply by raising the seat cushion forward, the operation is simple (easy).

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the angle regulating member includes a flexible member having flexibility.

In the vehicle seat according to the second aspect, since the angle regulating member includes the flexible member having flexibility, the seat cushion is in the normal use position in the normal use position (normal state) . The flexible member (angle regulating member) can be stored in a compact manner by bending the flexible member in accordance with the gap between the frame and the seat cushion. Moreover, compared with the case where the angle restricting member is configured to include a link, a hinge or the like, the angle restricting member can be configured to be simple and inexpensive. Moreover, the design of the angle restricting member can be facilitated, and the generation of abnormal noise can be prevented.

Vehicle seat according to the invention of claim 3 is the vehicle seat according to claim 1 or claim 2, wherein the angle regulating member is provided with a hook, provided in front Symbol frame or the seat cushion The hook is hooked on the hooked portion.

In the vehicular seat according to claim 3, when mounting the angle regulating member frame or seat cushion, a hook provided to the angle regulating member, if Hikkakere to be hooked portion provided on the frame or seat cushion Good. Thereby, the attachment operation | work of the angle control member to a vehicle body floor part, a frame, or a seat cushion can be made easy.

  According to a fourth aspect of the present invention, in the vehicle seat according to the third aspect, the frame is spanned between the left and right side frame portions and the front end portions of the left and right side frames. A pipe-shaped front frame portion, and the front frame portion is the hooked portion.

  In the vehicle seat according to the fourth aspect, the hook provided on the angle restricting member is hooked on the front frame portion provided on the frame. Since the front frame portion has a pipe shape and high rigidity, the seat cushion in the raised state can be favorably supported through the angle regulating member. In addition, since the hook is hooked on the pipe-shaped front frame portion already installed in the frame, it is not necessary to provide new parts on the frame side, and the configuration can be simplified. Furthermore, since the front frame portion has a pipe shape, the hook of the angle regulating member can be easily hooked.

The vehicle seat according to a fifth aspect of the present invention is the vehicle seat according to any one of the first to fourth aspects, wherein the seat cushion includes a pan frame, and a front end side of the pan frame. in conjunction with the fastening hinge by fasteners are rotatably connected before Symbol frame, a bracket provided on the angle regulating member and the hinge is fastened to the pan frame by said fastener.

In the vehicular seat according to claim 5, the hinge of the front end side of the pan frame of the seat cushion and rotatably coupled to the frame, and a bracket provided on the angle regulating member, fastened to the pan frame by fasteners Has been. As a result, there is no need to provide a reinforcing member such as a dedicated seat plate at the part where the bracket of the angle restricting member is attached in the pan frame, so that the configuration can be simplified and the weight and cost can be reduced. Can do.

  As described above, in the vehicle seat according to the present invention, the forward raising angle of the seat cushion can be regulated by a simple configuration and operation.

It is a perspective view showing the partial composition of the vehicular seat concerning the embodiment of the present invention, and showing the state where a seat cushion is located in a normal use position. FIG. 2 is a perspective view corresponding to FIG. 1 showing a state in which the seat cushion is positioned at a front flip-up position. It is sectional drawing which shows the partial structure of the vehicle seat, and shows the state which a seat cushion is located in a normal use position. FIG. 4 is a cross-sectional view corresponding to FIG. 3 showing a state in which the seat cushion is positioned at a front flip-up position. It is an expansion perspective view which expands and shows a part of FIG. It is a perspective view of the angle control member shown by FIG. It is a perspective view of the bracket which is a structural member of the same angle control member.

  Hereinafter, the vehicle seat 10 according to the embodiment of the present invention will be described with reference to FIGS. Note that an arrow FR appropriately shown in each drawing indicates the front of the vehicle, an arrow UP indicates the upper side of the vehicle, and an arrow IN indicates the inner side in the vehicle width direction. In the present embodiment, the front / rear / left / right / up / down directions of the vehicle seat 10 coincide with the front / rear, left / right / up / down directions of the vehicle.

<Configuration>
As shown in FIGS. 1 to 3, the vehicle seat 10 according to the present embodiment includes an adjuster assembly 12 as a frame. The adjuster assembly 12 includes a pair of left and right slide rails 16L and 16R attached to the upper surface of the vehicle body floor portion 14 (not shown except for FIG. 3). These slide rails 16L and 16R include a lower rail 18 fixed to the vehicle body floor 14 and an upper rail 20 attached to the lower rail 18 so as to be slidable in the vehicle front-rear direction.

  The lower ends of the left and right side frame portions 22L and 22R are fixed to the left and right upper rails 20, respectively. The left and right side frame portions 22L and 22R are formed in a long shape by pressing a sheet metal material, and each upper rail is in a state where the longitudinal direction is along the longitudinal direction of the seat and the thickness direction is along the width direction of the seat. It is erected upward from 20.

  The front end portions of the left and right side frame portions 22L and 22R are connected by the front frame portion 24 in the seat width direction. The front frame portion 24 is formed of a metal pipe material, and spans between upper end portions of the front end portions of the left and right side frame portions 22L and 22R in a state where the axial direction is along the seat width direction.

  Further, the rear end portions of the left and right side frame portions 22L and 22R are connected in the seat width direction by a pair of rear frame portions 26 and 28. These rear frame portions 26 and 28 are formed of a metal pipe material. One rear frame portion 26 is stretched between upper end portions of rear end portions of the left and right side frame portions 22L and 22R in a state where the axial direction is along the seat width direction. The other rear frame portion 28 is located obliquely below the seat front of the one rear frame portion 26, and at the rear end portions of the left and right side frame portions 22L and 22R in a state where the axial direction is along the seat width direction. It is stretched between the middle parts in the vertical direction. Note that a lower end portion of a seat back (not shown) is connected to rear end portions of the left and right side frame portions 22L and 22R via a reclining mechanism (not shown).

  As shown in FIG. 3, a storage box 30 (not shown except in FIGS. 3 and 4) is attached to the adjuster assembly 12 having the above configuration. The storage box 30 is formed in a box shape from a resin material, and the upper end side is open. The storage box 30 is provided between the front frame portion 24 and the rear frame portion 28 between the left and right side frame portions 22L and 22R. A flange portion 30A is formed on the opening side of the storage box 30, and the front frame portion 24 is covered from above by the flange portion 30A.

  Further, the front end portions of the seat cushion 34 are connected to the front end portions of the left and right side frame portions 22L and 22R via a pair of left and right hinges 32L and 32R. The seat cushion 34 includes a pan frame 36 formed in a square tray shape (square dish shape) from a sheet metal material. A seat cushion pad 40 covered with a seat skin 38 is attached to the upper surface of the pan frame 36.

  The pair of left and right hinges 32L and 32R are made of sheet metal material and are symmetrically formed. The left and right hinges 32L and 32R extend to the lower side of the seat cushion 34 from the fixing portion 42 fixed to the lower surface of the seat width direction end portion at the front end portion of the pan frame 36 and the seat width direction outer end portion of the fixing portion 42. The arm portion 46 is provided, and is formed in an inverted L shape when viewed from the front-rear direction of the seat.

  A pair of bolts 48 and 50 pass through the fixing portion 42 from the side opposite to the pan frame 36. These bolts 48 and 50 are arranged side by side in the front-rear direction of the seat cushion 34. These bolts 48 and 50 pass through the pan frame 36 and are screwed into nuts 52 and 54 provided on the opposite side of the fixing portion 42 via the pan frame 36. Thereby, the fixing portion 42 is fastened and fixed to the pan frame 36. The bolt 48 and the nut 52 constitute a fastener.

  On the other hand, the arm portion 46 of each hinge 32L, 32R has a front end portion of the side frame portions 22L, 22R at the end opposite to the fixed portion 42 by a hinge bolt 56 and a nut 58 screwed into the hinge bolt 56. Is rotatably connected to the lower end of the. The hinge bolt 56 is disposed in a state where the axial direction is along the seat width direction, and the left and right hinges 32L and 32R are rotatable about the hinge bolt 56 as a rotation center. Thus, the front end portion of the seat cushion 34 is rotatably connected to the lower end portion of the front end portion of the adjuster assembly 12 via the left and right hinges 32L and 32R. The seat cushion 34 is rotatable (can be flipped up) from the normal use position shown in FIGS. 1 and 3 to the front flip-up position shown in FIGS. 2 and 4.

  When the seat cushion 34 is disposed at the normal use position, the upper end opening of the storage box 30 is closed by the seat cushion 34. In this state, the engaging portion 60 provided at the rear end portion of the pan frame 36 is engaged with the protrusion 29 provided in the engaged portion 62 attached to the rear frame portion 28. Thereby, the seat cushion 34 is restrained at the normal use position. However, a belt 64 is connected to the engaging portion 60 described above, and the engagement state of the engaging portion 60 with respect to the protrusion 29 of the engaged portion 62 is released by pulling the belt 64. It has become. Thereby, the seat cushion 34 can be flipped up from the normal use position to the front flip-up position. In a state where the seat cushion 34 is flipped up to the front flip-up position, the upper end opening of the storage box 30 is opened, and a luggage can be put into the storage box 30.

  Here, in the present embodiment, in a state where the seat cushion 34 is flipped up to the front flip-up position, the cushion stopper 68 serving as an angle restricting member spanned between the front frame portion 24 and the pan frame 36 is used. In addition, the forward raising angle of the seat cushion 34 is restricted. As shown in FIGS. 5 and 6, the cushion stopper 68 includes a band 70 as a flexible member, a bracket 72 as a fixing member, and a hook 74 as a hooking member. The band 70 is formed in a long band shape with a chemical fiber such as nylon, for example, and is configured to be flexible and difficult to stretch. A bracket 72 is attached to one end of the band 70 in the longitudinal direction.

  The bracket 72 is formed by pressing a sheet metal material, and is formed in a substantially rectangular shape as shown in FIG. The bracket 72 is bent slightly at the bent portion 76 formed in the intermediate portion (bends in a substantially square shape) and at both ends in the width direction (the end on the arrow A direction side in FIG. 7 and the arrow B direction in FIG. 7). A pair of left and right reinforcing portions 78 and 80 are formed by bending the side end portion) to one side in the thickness direction of the bracket 72. These reinforcing portions 78 and 80 improve the bending rigidity of the bracket 72.

  One side of the bracket 72 via the bent portion 76 (the side in the direction of arrow C in FIG. 7) is a fixed portion 82. The fixing portion 82 is formed with a circular bolt hole 84 and a positioning projection 86. The bolt hole 84 and the positioning projection 86 are provided side by side in the width direction of the bracket 72. The bolt hole 84 is formed closer to the reinforcing portion 80 than the central portion in the width direction of the bracket 72, and the positioning projection 86 is formed closer to the reinforcing portion 78 than the central portion in the width direction of the bracket 72.

  As shown in FIG. 5, the fixing portion 82 has the side where the bolt hole 84 is formed overlapped with the fixing portion 42 of the hinge 32 </ b> R arranged on the right side of the seat from the opposite side of the pan frame 36. The positioning projection 86 has a structure that hits the side surface (end surface on the inner side in the sheet width direction) 43 of the fixing portion 42 of the hinge 32R. A bolt 48 having a hinge 32R fastened to the pan frame 36 is inserted into the bolt hole 84, and the bracket 72 is fastened to the pan frame 36 by the bolt 48 and the nut 52. That is, in the present embodiment, the bracket 72 and the hinge 32R are fastened together with the pan frame 36. When the bracket 72 is fastened to the pan frame 36 in this manner, the width direction of the bracket 72 and the width direction of the seat cushion 34 are configured to coincide with each other. Further, the positioning projection 86 contacts the side surface 43 of the fixed portion 42, so that the bracket 72 is not inadvertently rotated (displaced) around the bolt 48 with respect to the pan frame 36.

  Further, the other side of the bracket 72 via the bent portion 76 (the arrow D direction side in FIG. 7) is a band locking portion 88. The band locking portion 88 is disposed on the rear end side of the seat cushion 34 with respect to the fixing portion 82 in a state where the bracket 72 is fastened to the pan frame 36. The band locking portion 88 is formed with a long hole 90 extending in the width direction of the bracket 72. One end of the band 70 in the longitudinal direction is inserted into the long hole 90. One end side in the longitudinal direction of the band 70 is wound around the hole edge of the long hole 90 and folded back, and the portions before and after the folding are joined together by means such as sewing or welding. Thereby, the longitudinal direction one end side of the band 70 is latched by the bracket 72.

  On the other hand, the hook 74 is formed by injection molding of a resin material or the like, and has a substantially J-shaped cross section. One end side of the hook 74 is a band locking portion 92. A long hole 94 is formed in the band locking portion 92, and the other end in the longitudinal direction of the band 70 is inserted into the long hole 94. The other end in the longitudinal direction of the band 70 is wound around the hole edge of the long hole 94 and folded back, and the portions before and after the folding are joined together by means such as sewing or welding. Thereby, the other end side in the longitudinal direction of the band 70 is locked to the hook 74.

  Further, a hook portion 96 having a U-shaped cross section is provided on the other end side of the hook 74 (the side opposite to the band locking portion 92). The axial direction one end side (seat right end side) of the front frame portion 24 is fitted inside the hook portion 96. Thereby, the hook 74 is hooked on the front frame portion 24. When the hook portion 96 is fitted to the front frame portion 24, the hook portion 96 grips the front frame portion 24 by elastically returning after being temporarily elastically deformed in the direction in which the hook portion 96 spreads. It has become. As a result, the hook 74 is attached to the front frame portion 24 without any difficulty, so that the hook 74 is not inadvertently dropped from the front frame portion 24. However, the hook 74 is rotatable around the front frame portion 24.

  As shown in FIG. 3, the cushion stopper 68 having the above-described configuration is configured such that the bracket 72 is disposed obliquely above and rearward of the seat of the front frame portion 24 when the seat cushion 34 is located at the normal use position. . The band 70 extending from the bracket 72 to the front side of the seat is stored in a gap between the front end portion of the pan frame 36 and the flange portion 30 </ b> A of the storage box 30. In this state, the band locking portion 92 of the hook 74 is inclined obliquely upward toward the front of the seat and approaches the flange portion 30A of the storage box 30, and one end in the longitudinal direction of the band 70 is bent obliquely downward toward the front of the vehicle. It becomes a state.

  When the seat cushion 34 is flipped up from this state to the front flip-up position, the bracket 72 rotates forward of the seat of the front frame portion 24. In this case, since the hinge bolt 56 serving as the rotation center of the seat cushion 34 is disposed below the front frame portion 24, the bracket 72 is rotated by rotating the seat cushion 34 from the normal use position to the front flip-up position. The distance between the front frame portion 24 becomes longer, and the band 70 is stretched (pulled) between the bracket 72 and the front frame portion 24. As a result, the seat cushion 34 cannot rotate to the front side of the seat from the front flip-up position, and the front flip-up angle of the seat cushion 34 is regulated. In this state, the band 70 is arranged substantially along the vehicle front-rear direction.

<Action and effect>
Next, the operation and effect of this embodiment will be described.

  In the vehicle seat 10 having the above-described configuration, when the seat cushion 34 is flipped forward with respect to the adjuster assembly 12, the cushion stopper 68 stretched between the adjuster assembly 12 and the seat cushion 34 is stretched (strong without loosening). Tension). Thereby, the front flip-up angle of the seat cushion 34 is regulated. Since the cushion stopper 68 only needs to be spanned between the adjuster assembly 12 and the seat cushion 34, the cushion stopper 68 has a simple configuration including the band 70, the bracket 72, and the hook 74. Therefore, the number of parts can be reduced and the cost can be reduced. In addition, since the forward raising angle of the seat cushion 34 is automatically restricted simply by raising the seat cushion 34 forward, the operation is extremely simple (easy).

  In addition, there are (1) a method in which the front end of the seat cushion is applied to another part such as a vehicle floor when the seat cushion is flipped forward, There is a system in which a length-adjustable band that is locked to a seat cushion is hooked on another part (such as a seat bag of a rear seat that is tilted forward) and stopped. However, in the methods (1) and (2), there is a problem that it is not possible to regulate the front flip-up angle unless there are other parts nearby. Further, the method (1) has a problem in that the accuracy of angle (opening) regulation is low because the front raising angle of the seat cushion changes depending on how the front end side of the seat cushion pad is crushed. In the method (2), the band length must be adjusted after the band is hooked on other parts, and thus there is a problem that the operation is troublesome and troublesome.

  In this respect, in the present embodiment, the angle of the front raising of the seat cushion 34 is restricted by the cushion stopper 68 provided on the vehicle seat 10, and therefore the angle can be restricted by the vehicle seat 10 alone. In addition, since the forwardly raised angle of the seat cushion 34 is regulated by the band 70 that is configured to be difficult to stretch, the accuracy of the angle regulation can be improved. Thereby, it is possible to prevent the seat cushion 34 from inadvertently interfering with other parts (vehicle body floor, instrument panel, etc.) when the seat is flipped forward. Furthermore, in this embodiment, since the trouble like the method (2) can be saved, the operability is very good.

  In the present embodiment, the cushion stopper 68 includes the flexible band 70. Therefore, in the state where the seat cushion 34 is located in the normal use position (normal state), the adjuster assembly 12 and the seat cushion When the band 70 bends in accordance with the gap with the band 34, the band 70 (cushion stopper 68) can be stored compactly. Further, the cushion stopper 68 can be configured to be simple and inexpensive as compared with the case where the cushion stopper 68 includes a link, a hinge, and the like. In addition, the design of the cushion stopper 68 can be simplified, and the occurrence of abnormal noise can be prevented.

  Furthermore, in this embodiment, when the cushion stopper 68 is attached to the adjuster assembly 12, the hook 74 provided in the cushion stopper 68 may be hooked on the front frame portion 24 of the adjuster assembly 12. Thereby, the work of attaching the cushion stopper 68 to the adjuster assembly 12 can be facilitated. In addition, since the front frame portion 24 has a pipe shape and high rigidity, the seat cushion 34 in the raised state can be favorably supported through the cushion stopper 68. Further, since the hook 74 is hooked on the pipe-shaped front frame portion 24 already provided on the adjuster assembly 12, it is not necessary to provide new parts on the adjuster assembly 12 side, and the configuration can be simplified. Furthermore, since the front frame portion 24 has a pipe shape, the hook 74 of the cushion stopper 68 can be easily hooked.

  Furthermore, in the present embodiment, a hinge 32R that rotatably connects the pan frame 36 of the seat cushion 34 to the adjuster assembly 12 and a bracket 72 provided on the cushion stopper 68 are connected to the pan frame 36 by bolts 48 and nuts 52. It is tightened together. As a result, there is no need to provide a reinforcing member such as a dedicated seat plate at the portion of the pan frame 36 where the bracket 72 of the cushion stopper 68 is attached, so that the configuration can be simplified and the weight and cost can be reduced. Can be planned.

<Supplementary explanation of the embodiment>
In the above embodiment, the bracket 72 and the hinge 32R are fastened to the pan frame 36 by the bolt 48 and the nut 52. However, the present invention is not limited to this, and the bracket 72 and the hinge 32L are the bolt 48 and the nut. It may be configured to be fastened to the pan frame 36 by 52, or the bracket 72 may be fastened to the pan frame 36 separately from the hinge 32R and the hinge 32L.

  In the above embodiment, the hook 74 is hooked on the front frame portion 24 provided on the adjuster assembly 12 (frame) (the front frame portion 24 is the hooked portion). However, the present invention is not limited to this, and other components provided in the frame, for example, the side frame portion 22R may be configured as the hooked portion.

  Moreover, in the said embodiment, although the cushion stopper 68 was set as the structure provided with the hook 74, this invention is not limited to this. For example, the hook 74 may be omitted, and the other end portion in the longitudinal direction of the band 70 may be directly locked to the front frame portion 24 or the like. This also applies to the bracket 72.

  Moreover, although the said embodiment demonstrated the case where the cushion stopper 68 was comprised including the band 70 which has flexibility, this invention is not restricted to this, A link, a hinge, or a member which can be expanded-contracted is used. A cushion stopper may be configured. Further, instead of the band 70, a wire or the like may be applied as a flexible member.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to the above embodiment.

10 Vehicle seat 12 Adjuster assembly (frame)
22L, 22R Side frame part 24 Front frame part (hooked part)
32L, 32R Hinge 34 Seat cushion 36 Pan frame 48 Bolt (fastener)
52 Nut (fastener)
68 Cushion stopper (angle restriction member)
70 Band 72 Bracket 74 Hook

Claims (5)

A seat cushion which is linked to flipped forward relative to the frame attached to the vehicle body floor,
And the angle regulating member is passed over, to regulate the forward splashing angle of the seat cushion by thrusting during forward splashing of the seat cushion between the lower surface of the seat cushion and the front end portion of the front notated frame,
Vehicle seat equipped with   The vehicle seat according to claim 1, wherein the angle restricting member includes a flexible member having flexibility. Said angle regulating member is provided with a hook, before Symbol frame or the vehicle seat according to claim 1 or claim 2 wherein the hook is hooked to the hook portion provided in the seat cushion.   The frame includes left and right side frame portions and a pipe-like front frame portion that is spanned between front end portions of the left and right side frame portions, and the front frame portion is the hooked portion. The vehicle seat according to claim 3. The seat cushion is provided with a pan frame, and with hinges fastened by fasteners to the front end side of the pan frame is rotatably connected to the front Symbol frame, wherein a bracket provided on the angle regulating member hinge The vehicle seat according to claim 1, wherein the vehicle seat is fastened together with the pan frame by the fastener.

Images