JP6003724B2 - Emergency hanging structure - Google Patents

Description

  The present invention relates to an emergency hanging structure. More specifically, the present invention relates to an emergency hanging structure that prevents a seat cushion mounted on a floor from being peeled off from the floor when receiving a heavy load input due to a vehicle collision or the like.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration is known in which an engagement structure that engages with a floor in an emergency is provided so that a seat cushion does not peel from the floor when a vehicle collision occurs (Patent Document 1). Specifically, the hook structure is configured such that the hook provided at the rear part of the seat cushion is set and provided so as to be hooked from the rear side to the bracket provided on the floor in an emergency. It has become.

JP 2012-51439 A

  However, in the above-described prior art, the hook and bracket engagement structure described above is compatible only with the occurrence of a frontal collision of the vehicle. Therefore, it is desirable to have a configuration that can cope with the occurrence of a rearward collision. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is to cope with a front-rear collision of a vehicle while mounting an emergency hanging structure is simple. It is in the structure which can be performed.

In order to solve the above problems, the emergency hanging structure of the present invention takes the following means.
The first invention is an emergency hanging structure for preventing a seat cushion attached on a floor from being peeled off from the floor when receiving a heavy load input due to a vehicle collision or the like. This emergency hanging structure includes a U-shaped wire bent in a U-shape provided on a seat cushion, a bridging member bridged between both sides of the U-shaped wire, and a U-shape provided on the floor. And a bracket having a protrusion that is set to be passed from one side into a space surrounded by the wire and the bridging member. Even if the seat cushion is pushed and moved by the frontal or rearward impact of the vehicle, the bent-back portion of the U-wire is caught by the protruding portion of the bracket at one of the frontal and rearward impacts of the vehicle, and the bridging member is The seat cushion is prevented from being peeled off from the floor by engaging with the main body of the bracket.

  According to the first aspect of the invention, the seat cushion is set in a state in which the protruding portion of the bracket provided on the floor is passed through the space surrounded by the U-shaped wire and the bridging member. When either of the front collision or the rear collision occurs, separation from the floor is prevented by the catch between the members. In this way, the emergency hanging structure can be configured to be able to cope with the longitudinal collision of the vehicle while the mounting operation is simple.

  The second invention is the following configuration in the first invention described above. That is, the bridging member comes into contact with the concave portion formed in the main body portion of the bracket, and the bridging member slips off the position where the bridging member hits the concave portion due to inertia due to the collision of the seat cushion. A hook portion protruding in a hook shape that hooks into the concave portion is formed.

  According to the second aspect of the present invention, the bridging member hits the recess and is hooked, so that the bridging member can be hooked in a constrained state so as not to be disengaged upward from the recess. Further, since the hooking portion that prevents the bridging member from slipping off from the position where it hits the concave portion is formed, the seat cushion can be held firmly so as not to peel off the floor.

  The third invention is the following configuration in the first or second invention described above. In other words, the bracket is configured by a hinge bracket fixture for connecting the seat back to the floor so as to be rotatable with respect to the floor, and the U-wire is fixed to the frame embedded in the pad of the seat cushion so that the rear of the seat It overhangs on the side.

  According to the third aspect of the present invention, the hinge bracket fixture having a high structural strength that is fixed on the floor and supports the seat back has a high structural strength that must prevent the seat cushion from moving in an emergency. Can be reasonably constructed without increasing the number of parts. In addition, the U-shaped wire provided in the seat cushion is fixed to the frame embedded in the pad of the seat cushion, so that the U-shaped wire can have a high structural strength.

It is a perspective view which shows the attachment structure of the vehicle seat of Example 1. FIG. It is a perspective view which shows the state which attached the seat cushion on the floor. It is an external appearance perspective view of a seat cushion. It is the (a) front view longitudinal cross-section (b) side view longitudinal cross-sectional view which shows the state before mounting | wearing of the IV section of FIG. It is the (a) front view longitudinal cross-section (b) side view longitudinal cross-sectional view which shows the state after mounting | wearing of the part. FIG. 3 is an enlarged perspective view of a VI part in FIG. 2. It is a perspective view which shows the state which the part received the rear part collision of the vehicle, and was engaged in the front side. It is a perspective view which shows the state which the part received on the front side of the vehicle, and was engaged in the rear side. It is an expansion perspective view of the IX part of FIG. It is a perspective view which shows the state which the part received the rear part collision of the vehicle, and was engaged in the front side. It is a perspective view which shows the state which the part received on the front side of the vehicle, and was engaged in the rear side.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, an emergency hook structure ST3 according to the first embodiment will be described with reference to FIGS. As shown in FIGS. 1 to 2, the emergency hanging structure ST3 of the present embodiment is provided between the seat cushion 3 of the rear seat 1 of the automobile and the floor panel FP, and the seat cushion 3 collides with the vehicle. It functions to prevent peeling from the floor panel FP when receiving a large load due to the above. Here, the rear seat 1 is configured as a seat for three persons having a long width, and includes a seat back (not shown) that serves as a backrest for a seated occupant and a seat cushion 3 that serves as a seating portion. ing. The seat cushion 3 has a continuous configuration with a long width for three persons, but the seat back (not shown) has a configuration divided into a left and right ratio of 6: 4.

  Each of the parts of the seat back (not shown) divided into 6: 4 as described above is connected to each movable tool 31 of the hinge bracket 30 provided on the floor panel FP, with the inner lower ends thereof facing each other. The floor panel FP is pivotally mounted so as to be able to rotate back and forth around the rotation axis 33 of the hinge bracket 30. In addition, each of the divided parts of the seat back (not shown) is connected to a hinge structure part (not shown) provided on the floor panel FP at the outer lower ends thereof, and is connected to the floor panel FP. The hinge bracket 30 is pivotally mounted so as to be able to rotate back and forth about the rotation axis 33 of the hinge bracket 30. Each of the divided parts of the seat back (not shown) is normally engaged with the engaged parts provided on the side wall parts of the vehicle body with the engaging parts provided on the shoulder openings on the outside of the vehicle. Since the rotation is stopped, each backrest angle is fixed and held at a fixed position (not shown).

  Here, the hinge bracket 30 described above is a movable member pivotally attached to an L-shaped plate-like fixture 32 fixed on the floor panel FP, and a rotating plate 33 on a standing plate portion of the fixture 32. And the tool 31. The fixing member 32 is in a state in which the bottom plate side portion bent in an L-shape is bolted onto the floor panel FP and integrally joined, and the standing plate portion faces in the seat width direction. As the state of being directed, it is set in a state of being strong against a bending load applied in the front-rear direction. The movable tool 31 is provided on each of the left and right sides of the fixing tool 32, and is pivotally attached to the fixing tool 32 so that each of the movable tools 31 can be freely rotated by the rotating shaft 33. ing.

  In the seat cushion 3, the pushing wires 3F1b provided at the two left and right positions in front of the seat cushion 3 are pushed into the insertion tools 10 installed at the two left and right positions on the floor panel FP, respectively. By being engaged, the floor panel FP is integrally coupled and attached. As described above, the seat cushion 3 is attached to the floor panel FP by a simple pushing operation by two push-type coupling structures ST1 provided between the seat cushion 3 and the floor panel FP.

  However, with only the push-type coupling structure ST1 that is easy to attach, the seat cushion 3 may be peeled off from the floor panel FP because the heavy load generated when a vehicle collision occurs cannot be withstood. Therefore, in order to withstand such a heavy load, the seat cushion 3 is further increased between the left and right front portions of the seat cushion 3 and the floor panel FP due to the occurrence of a vehicle collision. An emergency hook structure ST <b> 2 is provided that prevents the seat cushion 3 from being peeled and moved by being engaged with each other even when the load is pushed and moved in the front-rear direction. These emergency hook structures ST2 are provided in a state of being arranged side by side with the above-described push-type coupling structures ST1.

  In addition, the seat cushion 3 receives a large load due to the collision of the vehicle in the front-rear direction between the rear center portion of the seat cushion 3 and the floor panel FP (the fixing bracket 32 of the hinge bracket 30 described above). An emergency hook structure ST3 is provided that prevents the seat cushion 3 from being peeled and moved by being engaged with each other even if they are pushed and moved. The emergency hook structure ST3 corresponds to the “emergency hook structure” of the present invention, and the fixture 32 of the hinge bracket 30 corresponds to the “bracket” of the present invention.

  Each of the above-described emergency hook structures ST2 and ST3 is in a state in which the members that are hooked in an emergency are faced to each other in the front-rear direction when the above-described push-type coupling structure ST1 is coupled by pushing. Thus, only the positioning is performed so as to function to prevent the separation movement of the seat cushion 3 in an emergency. Specifically, each of the emergency hanging structures ST2 and ST3 is respectively in the normal state in which the above-described push-type coupling structure ST1 is coupled by pushing, so that the members engaged in the emergency are respectively front and back. The seat cushions 3 are opposed to each other with a gap in the direction, and the seat cushions 3 are relatively moved closer to each other by being pushed and moved in the front-rear direction in response to the input of a large load accompanying the occurrence of a vehicle collision. It is configured to be pushed and moved in the direction to be engaged.

  Therefore, the push-type coupling structure ST1 that can be easily coupled as described above is combined with the emergency hanging structures ST2 and ST3 that are aligned during the coupling operation and operate so as to engage in an emergency. The mounting structure of the seat cushion 3 to the floor panel FP can be configured to withstand a heavy load while being simple to mount. Hereinafter, each configuration of the above-described push-type coupling structure ST1 and emergency hook structures ST2 and ST3 will be described in detail together with the configuration of the seat cushion 3.

  As shown in FIG. 3, the seat cushion 3 described above is a metal wire frame 3 </ b> F assembled into a square frame forming the skeleton of the cushion pad 3 </ b> P inside the urethane foam cushion pad 3 </ b> P forming the cushion structure. Is embedded. In addition, although the cloth cushion cover which is not shown in figure is put on the surface of the cushion pad 3P mentioned above and is stretched, in this embodiment, it is embedded in the cushion pad 3P mentioned above and the inside thereof. In order to show the configuration of the wire frame 3F in an easy-to-understand manner, the illustration and explanation of the cushion cover are omitted. Here, the cushion pad 3P corresponds to the “pad” of the present invention, and the wire frame 3F corresponds to the “frame” of the present invention.

  As shown in FIGS. 1 to 2, the wire frame 3F described above includes a front wire 3F1 forming a skeleton on the front side of the cushion pad 3P, both side wires 3F2 forming skeletons on both outer sides of the cushion pad 3P, and a cushion pad. The rear wire 3F3 forming the skeleton of the rear side of the 3P is connected to one, and is assembled in a square frame shape extending in shape along the outer peripheral shape of the cushion pad 3P. The wire frame 3F described above is formed in a state of being integrally bonded and molded in the cushion pad 3P foam-molded in the same mold by being set in the mold during foam molding of the cushion pad 3P. It is in a state. Further, the above described wire frame 3F is integrally provided with a shaping wire 3F1c extending in the sheet width direction so as to project forward and bridge between the left and right end portions of the above described front wire 3F1. The shape forming wire 3F1c supports the shape bulging from the front side formed on the left and right side portions of the front side portion of the cushion pad 3P from the inside by the shape projecting to the front side of the front wire 3F1. It functions as a shaping member for preventing it from being crushed by the tension force of the cushion cover (not shown).

  Further, at the two locations on the left and right ends of the front wire 3F1 described above, there are an attached wire 3F1a that is bent in a U-shape on the rear side of the seat and both ends are fixed to the front wire 3F1, and these attached wires. A U-shaped pushing wire 3F1b and a hooking wire 3F1d, which are bridged side by side between the front and rear frame portions surrounded by the 3F1a and the front wire 3F1, are integrally provided.

  Each push-in wire 3F1b is formed in a shape bent in a U-shape on the lower side, and the insertion hole 21 of each bracket 20 installed at two positions on the front side on the floor panel FP. By being inserted into the resin insertion tool 10 mounted inside from the upper side, the resin insertion tool 10 is mounted and held in a state of being prevented from being detached by each insertion tool 10. The structure in which these push-in wires 3F1b are inserted into the respective insertion tools 10 on the floor panel FP and joined in a state in which they are prevented from coming off corresponds to the push-type joining structure ST1 described above. With the push-type coupling structure ST1, the seat cushion 3 can be easily attached on the floor panel FP. The specific configuration of the push-type coupling structure ST1 will be described in detail later with reference to FIGS.

  Each hook wire 3F1d provided side by side next to each push wire 3F1b described above is formed in a shape that is shallower than each push wire 3F1b and bent in a U shape on the lower side. In the state where it was inserted and passed from the upper side into each hooking port 22 formed side by side next to the insertion hole 21 of each bracket 20 installed at the two left and right positions on the floor panel FP described above. It is supposed to be set. Thus, each hook wire 3F1d is normally held in a state where it is not engaged with the hook opening 22 of each bracket 20 in the front-rear direction, but in the event of a vehicle collision, The front and rear hook claws 22B formed on the mouth 22 are respectively engaged with each other so as to function to prevent the seat cushion 3 from being peeled off (see FIGS. 6 to 8). The configuration in which these hooking wires 3F1d are respectively engaged with the hooking claws 22B of the hooking openings 22 of the brackets 20 corresponds to the emergency hooking structure ST2 described above. The specific configuration of these emergency hook structures ST2 will be described in detail later with reference to FIGS.

  As shown in FIGS. 1 and 2, the U-shaped portion provided at the intermediate portion of the rear wire 3F3 is bent so as to protrude in a U-shape on the rear side of the seat and both ends are fixed to the rear wire 3F3. A wire 3F3a is integrally provided. Between the left and right frame portions of the U-shaped wire 3F3a, a bridging wire 3F3b bent in an L shape is integrally bridged in the sheet width direction. The U-shaped wire 3F3a described above is bent to the lower side of the tip of the cut-and-raised portion 32A formed by cutting and raising from the fixture 32 of the hinge bracket 30 installed at the rear center portion on the floor panel FP. The bent portion 32A1 is set so that the U-shape is passed from the lower side. As a result, the U-shaped wire 3F3a is held in a state in which upward movement of the U-shaped wire 3F3a is suppressed by the cut-and-raised portion 32A of the fixture 32 of the hinge bracket 30 applied to the U-shaped wire 3F3a.

  The U-shaped wire 3F3a described above is normally arranged such that the bent portion (rear end) of the U-shape is separated from the bent portion 32A1 in the front-rear direction, and the bridging wire 3F3b is fixed to the hinge bracket 30. The U-shaped bent portion (rear end) engages with the bent portion 32A1 in the event of a vehicle collision, and the bridging wire 3F3b is connected to the hinge bracket 30. The seat cushion 3 functions so as to prevent the seat cushion 3 from being peeled and moved (see FIGS. 9 to 11). The configuration in which the U-shaped wire 3F3a and the bridging wire 3F3b are engaged with the fixture 32 of the hinge bracket 30 on the floor panel FP corresponds to the above-described emergency hanging structure ST3. Here, the U-shaped wire 3F3a corresponds to the “U-shaped wire” of the present invention, the bridging wire 3F3b corresponds to the “bridging member” of the present invention, and the bent portion 32A1 corresponds to the “projecting portion” of the present invention. A specific configuration of the emergency hook structure ST3 will be described later in detail with reference to FIGS.

  Here, as shown in FIG. 3, the rear edge of the cushion pad 3 </ b> P described above penetrates in the height direction in order to pass a buckle of a seat belt device (not shown) from the lower side through two portions on the left and right sides thereof. A buckle through hole 3P1 is formed. Therefore, the rear wire 3F3 passed along the rear side portion of the cushion pad 3P has two portions passing through the vicinity of each buckle passage hole 3P1 in order to avoid exposure from these two buckle passage holes 3P1. However, they are formed in a shape bent in a crank shape on the front side of the seat. As described above, the cushion pad 3P described above is formed so as to be embedded in the interior so that the entire wire frame 3F is not exposed to the outside. However, the U of the U-shaped wire 3F3a attached to the rear wire 3F3 described above. A bent portion through-hole for allowing the bent portion 32A1 of the cut-and-raised portion 32A formed in the fixture 32 of the hinge bracket 30 described above with reference to FIGS. 3P3 is formed.

  The bent portion through hole 3P3 described above is formed between the U-shaped wire 3F3a and the bridging wire 3F3b attached to the rear wire 3F3 so as not to be exposed to the outside. As a result, the U-shaped wire 3F3a and the bridging wire 3F3b described above are covered from the outside by the shape of the cushion pad 3P, respectively. Each of the metal bent portions 32A1 passed through the through hole 3P3 is in direct contact with the metal bent portion 32A1 and is protected so as not to generate abnormal noise. Also, each insertion wire attached to the front wire 3F1 described above is also in a state of being covered from the outside by a shape portion formed to bulge downward on the bottom surface portion of the cushion pad 3P. In normal times, due to the backlash at the time of traveling of the vehicle, the metal brackets 20 through which they are passed are directly in contact with each other and are protected from noise.

  Each push wire 3F1b attached to the front wire 3F1 is in a state of protruding downward from the bottom surface of the cushion pad 3P and exposed to the outside. Since these push-in wires 3F1b are configured to be engaged in a state where they are inserted into the resin insertion tool 10 and prevented from coming off as described above, the abnormal noise caused by the contact between the metals as described above is not generated. Does not occur.

  Next, the configuration of each of the push-type coupling structures ST1 described above will be described in detail with reference to FIGS. As described above, each push-type coupling structure ST1 includes the insertion holes of the brackets 20 installed on the floor panel FP so that the U-shaped push wires 3F1b attached to the front wires 3F1 of the seat cushion 3 are provided. By being pushed from above into each of the resin-made insertion tools 10 mounted in 21, the respective insertion tools 10 are engaged so as to be elastically hooked to the respective pressing wires 3F1b. It is configured to be mounted in a state in which it is prevented from coming off. Specifically, each insertion tool 10 described above is in a state of being inserted and attached from above into the insertion hole 21 of each bracket 20 erected in a pedestal shape coupled on the floor panel FP. Yes.

  Each insertion tool 10 is provided in a bottomed horizontally long cylindrical fixing portion 11 fixed in a state of being integrally mounted in the insertion hole 21 of each bracket 20, and provided in the cylinder of the fixing portion 11. The wire 3F1b is configured to have a movable portion 12 that is pushed and fitted to a position where the fixed portion 11 bottoms when the wire 3F1b is pushed into the inside from above. The fixing portion 11 is formed in a shape having a head shape wider than the insertion hole 21, and the cylindrical portion extending downward is inserted into the insertion hole 21 from above, A stabilizer 11 </ b> C formed in a shape that spreads in an umbrella shape around the lower periphery of the head is mounted at a position where it is brought into contact with and locked to the upper surface of the bracket 20.

  The movable portion 12 is formed in a bottomed horizontally long cylindrical shape that is fitted in the cylinder of the fixed portion 11 and is slidable in the height direction along the cylindrical shape of the fixed portion 11. . The movable portion 12 has an oval receiving hole 12A that can receive the above-described push-in wire 3F1b from the upper side, and a wall portion facing the short direction of the receiving hole 12A toward the receiving hole 12A. Each locking claw 12B formed so as to protrude, and each return prevention claw 12C formed in the shape of projecting outward on the upper edge of each wall portion facing in the short direction of the movable portion 12. , Are formed into a shape having. As shown in FIG. 4A, each of the locking claws 12 </ b> B is cut into a U shape in each wall portion of the movable portion 12, so that only the upper edge portion of the locking claw 12 </ b> B is formed in the movable portion 12. It is connected, and it is configured to be able to bend and deform as a whole with these upper edge portions as fulcrums. In the free state, as shown in FIG. It is set as the state maintained by making it protrude in the hole 12A and approaching.

  As shown in FIGS. 5A and 5B, the locking claws 12B are mutually pushed in such a manner that the pushing wire 3F1b is pushed into the receiving hole 12A of the movable portion 12 and is pushed away by the pushing wire 3F1b. Are deformed in a direction in which their tips are pulled apart, and the pushing wire 3F1b is pushed to a position where it bottoms on the bottom portion 12D of the movable portion 12, thereby restoring and deforming each other so that the tips of each other approach each other in the receiving hole 12A. The initial position is restored.

  As shown in FIG. 4B, each of the return prevention claws 12 </ b> C has an inclined surface shape that protrudes outward from the movable portion 12 at an initial stage before the push wire 3 </ b> F <b> 1 b is pushed into the upper portion of the fixed portion 11. As a state of riding on the inner peripheral surface, the state of being held above the stabilizer 11C of the fixing portion 11 (the state of being located above the insertion hole 21 of the bracket 20) is held. ing. As shown in FIG. 5 (b), each return preventing claw 12C is pushed to the position where the pushing wire 3F1b bottoms on the bottom 12D of the movable portion 12, and then the bottom 12D of the movable portion 12 is fixed by further pushing. By being pushed toward the bottom portion 11B of the portion 11 to the bottom portion 11B, the portion 11 enters the cylinder of the fixing portion 11 while being elastically squeezed, and the upper edge portion thereof is inserted into the insertion hole 21 of the bracket 20. When entering the inside, the claw shape of the upper edge portion is projected outward from the hole formed in the wall portion of the fixing portion 11 by the elastic force, and the claw shape is inserted into the insertion hole 21 of the bracket 20. It is held in a state of being hooked on the peripheral surface from the lower side and locked so as not to come out upward.

  The movable portion 12 is pushed until the bottom portion 12D bottoms on the bottom portion 11B of the fixed portion 11 by the above pushing, and the return prevention claws 12C are hooked on the insertion holes 21 of the bracket 20. When the locked state is reached, both the locking claws 12B are pushed into the narrow region 11A in which the inner diameter of the fixed portion 11 is narrowed, and deformation to the outside is prohibited. To the locked state. In such a state, even when a force in the direction in which the movable portion 12 is pulled upward is applied to the push-in wire 3F1b, the upper edge portion of each return prevention claw 12C is inserted into the insertion hole 21 of the bracket 20. Since the latching claws 12B are in the narrow area 11A of the fixed portion 11 and cannot be opened, the push-in wire 3F1b is inserted into the distal end and the bottom portion 12D of the latching claws 12B. It can be kept in a state of being sandwiched between the two.

  Next, the configuration of each of the push-type coupling structures ST1 described above and each of the emergency hanging structures ST2 provided side by side will be described in detail with reference to FIGS. As shown in FIG. 6, each of the emergency hanging structures ST2 includes the brackets in which the hook wires 3F1d attached to the front wires 3F1 of the seat cushion 3 are installed on the floor panel FP as described above. By being inserted into the 20 hooks 22 from above and passed therethrough, the hooks 22B are not normally engaged with the hooks 22B formed in the hooks 22, but each hook 22 in an emergency. The seat cushion 3 is set in a state in which the seat cushion 3 is prevented from being peeled and moved by being hooked on the front or rear hooking claws 22B.

  Here, each hooking port 22 is formed through the upper surface of each bracket 20 described above, and has a rectangular hole-shaped through hole 22A that allows each hooking wire 3F1d to pass from above. Each hook 22A is formed in a shape having a hooking claw 22B protruding in a claw shape from the center position on each inner peripheral surface on the front and rear sides of each through hole 22A toward the inside of each through hole 22A. Each of the hooking claws 22B described above can receive a U-shaped bent-back portion (lower end) of each hooking wire 3F1d on the lower surface thereof from the front side or the rear side and can be restrained so as not to escape upward. It has a hook shape.

  As shown in FIG. 6, each of the hooks 22 is formed on each of the front and rear sides of the seat cushion 3 in a normal state in which the seat cushion 3 is dropped onto the floor panel FP. Although the hooking claws 22B are not in contact with the hooking wires 3F1d of the seat cushion 3, the hooking claws 22B are arranged at slightly higher positions than the hooking wires 3F1d. Both are arranged in a state of being separated from each other in the front-rear direction. Accordingly, each of the emergency hanging structures ST2 is configured to be set in a non-contact state spaced apart from each other as described above, so that the seat cushion 3 is mounted on the floor panel as described above with reference to FIGS. When mounting on the FP, the left and right side push-type coupling structures ST1 are aligned and coupled, so that the left and right side hook wires 3F1d are respectively placed in the hook ports 22. Since the positions are adjusted so as to pass through, each emergency hook structure ST2 can be set in a state where it can function effectively in an emergency without requiring any special alignment work.

  In each of the above-described emergency hanging structures ST2, for example, as shown in FIG. 7, a rear collision of the vehicle occurs, and a large load with a spring toward the vehicle rear side is input to the seat cushion 3. When the seat cushion 3 is moved, the hooks of the brackets 20 are torn while the shape of the cushion pad 3P covering the hooking wires 3F1d covering the left and right sides of the hooking wire 3F1d is torn by the movement of the seat cushion 3 moving backward. 22 is in a state where it hits the inner peripheral surface on the rear side of 22 and is hooked on the hook claw 22B on the same side (a state where the hook claw 22B is received), and the movement of the seat cushion 3 to the rear side and the upper side is restricted. It becomes. Thereby, since the seat cushion 3 is not greatly shaken to the rear side, each push-type coupling structure ST1 that couples the two front sides of the seat cushion 3 described above with reference to FIG. 2 on the floor panel FP, It is suppressed that these coupling states are forcibly removed under an unreasonable load. Alternatively, even if the connection state of each push-type connection structure ST1 may be forcibly removed, the seat cushion 3 is peeled off from the floor panel FP by the catch of each emergency hook structure ST2. Is to be prevented.

  Further, as shown in FIG. 8, in each of the emergency hanging structures ST2, a large load with a spring toward the vehicle front side is input to the seat cushion 3 due to the occurrence of a frontal collision of the vehicle. When the seat cushion 3 is moved forward, the hooks of the brackets 20 are torn while the shape of the cushion pad 3P covering the hook wires 3F1d on the left and right sides of the seat cushion 3 is torn. 22 is in a state where it hits the inner peripheral surface of the front side of 22 and is hooked on the hooking claw 22B on the same side (a state where the hooking claw 22B is received), and the movement of the seat cushion 3 to the front side and the upper side is restricted. Become. Thereby, since the seat cushion 3 is not greatly shaken to the front side, each push-type coupling structure ST1 that couples the two front portions of the seat cushion 3 described above with reference to FIG. 2 on the floor panel FP, It is suppressed that these coupling states are forcibly removed under an unreasonable load. Alternatively, even if the connection state of each push-type connection structure ST1 may be forcibly removed, the seat cushion 3 is peeled off from the floor panel FP by the catch of each emergency hook structure ST2. Is to be prevented.

  Next, the configuration of the emergency hanging structure ST3 provided between the rear center portion of the seat cushion 3 and the floor panel FP will be described in detail with reference to FIGS. As shown in FIG. 9, in this emergency hanging structure ST3, as described above, the U-shaped wire 3F3a attached to the rear wire 3F3 of the seat cushion 3 and extending to the rear side of the seat has a floor panel FP in the U-shape. It is not always engaged with the fixture 32 by being rubbed so as to be passed through from the lower side to the bent portion 32A1 of the cut and raised portion 32A formed on the fixture 32 of the hinge bracket 30 installed on the upper side. However, in an emergency, the U-shaped wire 3F3a or the bridging wire 3F3b cross-linked to the U-shaped wire 3F3a is caught by the bent portion 32A1 or the concave portion 32B formed at the front edge of the fixture 32, thereby preventing the seat cushion 3 from being peeled off. It is set to the state to do. Here, the concave portion 32 </ b> B corresponds to a “concave portion” of the present invention.

  Here, the U-shaped wire 3F3a described above is in a state in which both ends of the U-shaped are hooked and fixed on the rear wire 3F3 as shown in FIGS. 3F3a1 extends further to the front side of the seat than the fixing point with the rear wire 3F3 and is hooked and fixed to the front wire 3F1. As a result, the U-shaped wire 3F3a is in a state where the right side 3F3a1 on the right side of the U-shaped wire 3F3a is fixed to the rear wire 3F3 and the front wire 3F1 and is firmly and integrally coupled. Also, in the wire frame 3F, the right side 3F3a1 in the figure on the right side of the U-shaped wire 3F3a is bridged between the rear wire 3F3 and the front wire 3F1, so that the horizontally long rectangular frame shape is formed. A wire for connecting the rear wire 3F3 and the front wire 3F1 is added to the middle portion of the wire, and the wires are reinforced so that they are not easily separated in the front-rear direction.

  As shown in FIG. 9, between the left and right frame portions of the U-shaped wire 3F3a, a bridging wire 3F3b that is bent in an L shape and is formed with the same thickness as these is bridged. The bridging wire 3F3b has an extension 3F3b1 extending rightward from one side 3F3a1 of the U-shape on the right side of the U-shaped wire 3F3a. A bent portion 3F3b2 that is bent toward the rear side of the seat is formed at the end. In the state where the bent portion 32A1 formed at the tip of the cut and raised portion 32A of the fixing tool 32 is passed through the U-shape of the U-shaped wire 3F3a, the bridging wire 3F3b has the extension portion 3F3b1 fixed to the fixing device 32. It is set as the state arrange | positioned in the position spaced apart in the front side of the recessed part 32B formed in the front edge part.

  The bent portion 32A1 of the fixture 32 passed through the U-shaped wire 3F3a described above receives the bent back portion (rear end) of the U-shaped wire 3F3a from the rear side due to the bent hook shape and escapes upward. It functions as a hooking part that can be constrained so as not to exist. Further, the concave portion 32B formed on the front edge portion of the fixture 32 receives the extension portion 3F3b1 of the bridging wire 3F3b bridged between both frame portions of the U-shaped wire 3F3a from the front side by the concave shape, and It functions as a hooking part that can be restrained so as not to escape to the side.

  Accordingly, the above-described emergency hanging structure ST3 is configured to be set in a non-contact state spaced apart from each other as described above, so that the seat cushion 3 is placed on the floor as described above with reference to FIGS. When dropping and mounting on the panel FP, first, the U-shaped wire 3F3a is hung on the bent portion 32A1 of the fixture 32, and then each push-type coupling structure ST1 on the front side of the seat cushion 3 is aligned. As a result, the extension portion 3F3b1 of the bridging wire 3F3b cross-linked to the U-shaped wire 3F3a is aligned with the front position of the concave portion 32B of the fixture 32, so that no special alignment work is required. The emergency hook structure ST3 can be easily set in a state where it can function effectively in an emergency.

  In the above-described emergency hook structure ST3, for example, as shown in FIG. 10, a rear collision of the vehicle occurs, and a large load with a spring toward the vehicle rear side is input to the seat cushion 3. When the seat cushion 3 moves, the extension part 3F3b1 of the bridging wire 3F3b bridged to the U-shaped wire 3F3a described above is torn by the movement of the seat cushion 3 that is displaced rearward. However, it enters the recessed portion 32B on the front side of the fixture 32 and is hooked, and the seat cushion 3 is restricted from moving rearward and upward. Thereby, since the seat cushion 3 is not greatly shaken to the rear side, each push-type coupling structure ST1 that couples the two front sides of the seat cushion 3 described above with reference to FIG. 2 on the floor panel FP, It is suppressed that these coupling states are forcibly removed under an unreasonable load. Or even if the connection state of each push-in type connection structure ST1 may be forcibly removed, the seat cushion 3 may be peeled off from the floor panel FP by the hooking of the emergency hook structure ST3. It is to be prevented.

  Specifically, as shown in FIG. 2, the above-described emergency hook structure ST3 is set in a right-side region portion of the seat cushion 3 in the width direction. The bridging wire 3F3b is biased and displaced so that the left side region where the weight ratio of the seat cushion 3 is heavy is pushed further toward the rear side with the point where the bridging wire 3F3b hits the recess 32B of the fixture 32 as a fulcrum. It may be subjected to a load in the direction of being removed by being rubbed to the left side. However, the emergency hanging structure ST3 has a bent portion 3F3b2 formed at the right end of the bridging wire 3F3b shown in FIG. By being hooked on the right side surface of the recess 32B of the fixture 32, the hooked state between the bridging wire 3F3b and the recess 32B can be strongly maintained.

  Further, as shown in FIG. 11, the above-described emergency hanging structure ST3 is input with a large load with a spring forward to the seat cushion 3 due to a frontal collision of the vehicle. In the case where the seat cushion 3 is moved, the bent portion (rear end) of the U-shaped wire 3F3a is torn while the shape portion of the cushion pad 3P covering the same portion is torn by the movement of the seat cushion 3 displaced forward. The hook 32 hits the bent portion 32A1 of the fixture 32, and the seat cushion 3 is restricted from moving forward and upward. Thereby, since the seat cushion 3 is not greatly shaken to the front side, each push-type coupling structure ST1 that couples the two front portions of the seat cushion 3 described above with reference to FIG. 2 on the floor panel FP, It is suppressed that these coupling states are forcibly removed under an unreasonable load. Or even if the connection state of each push-in type connection structure ST1 may be forcibly removed, the seat cushion 3 may be peeled off from the floor panel FP by the hooking of the emergency hook structure ST3. It is to be prevented.

  As described above, the emergency hanging structure ST3 of the present embodiment includes a U-shaped wire 3F3a bent in a U-shape provided on the seat cushion 3 and a bridge that is bridged between both sides of the U-shaped wire 3F3a. A bent portion 32A1 (protrusion) that is set on the wire 3F3b (bridging member), the floor panel FP, and passed from the upper side (one side) into the space surrounded by the U-shaped wire 3F3a and the bridging wire 3F3b Part) (the fixture 32 of the hinge bracket 30). Even if the seat cushion 3 is pushed and moved by the front collision or the rear collision of the vehicle, the bent portion of the U-shaped wire 3F3a is caught by the bent portion 32A1 of the fixture 32 at one of the front collision and the rear collision of the vehicle. At the other time, the bridging wire 3F3b hits against the main body portion of the fixture 32, and the separation of the seat cushion 3 from the floor panel FP is prevented.

  Thus, the seat cushion 3 is set in a state in which the bent portion 32A1 of the fixture 32 provided on the floor panel FP is passed through the space surrounded by the U-shaped wire 3F3a and the bridging wire 3F3b. As a result, even when a frontal collision or a rearward collision of the vehicle occurs, separation from the floor panel FP is prevented by the hooking of the members. As described above, the emergency hanging structure ST can be configured to be able to cope with the longitudinal collision of the vehicle while the mounting operation is simple.

  In addition, the bridging wire 3F3b comes into contact with the recess 32B formed in the main body of the fixture 32, and the bridging wire 3F3b hits the bridging wire 3F3b on the recess 32B due to inertia due to the impact of the collision of the seat cushion 3. A bent portion 3F3b2 (hook portion) protruding in a hook shape that hooks into the recess 32B is formed to prevent slipping off from the hit position. As described above, the bridging wire 3F3b hits the concave portion 32B so that the bridging wire 3F3b can be hooked in a constrained state so as not to be disengaged upward from the concave portion 32B. Further, by forming the bent portion 3F3b2 that prevents the bridging wire 3F3b from slipping off from the position where it hits the concave portion 32B, the seat cushion 3 can be held tenaciously so as not to be peeled off from the floor panel FP. .

  Further, the bracket for hooking the U-shaped wire 3F3a and the bridging wire 3F3b in the emergency is constituted by a fixture 32 of a hinge bracket 30 for hinge-connecting a seat back (not shown) to the floor panel FP, The character wire 3F3a is provided so as to protrude to the rear side of the seat as being fixed to a wire frame 3F (frame) embedded in a cushion pad 3P (pad) of the seat cushion 3. With such a configuration, the seat cushion 3 is prevented from moving in an emergency by the fixture 32 of the hinge bracket 30 having a high structural strength that is fixed on the floor panel FP and supports the seat back. A bracket that requires high structural strength that must be made can be reasonably constructed without increasing the number of parts. Further, the U-shaped wire 3F3a provided on the seat cushion 3 is fixed to the wire frame 3F embedded in the cushion pad 3P of the seat cushion 3, thereby providing the U-shaped wire 3F3a with high structural strength. It can be configured.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the “vehicle seat” targeted by the present invention may be a seat other than a rear seat of an automobile, a seat applied to a vehicle other than an automobile such as a railroad, an aircraft, a ship. The seat may be used for various vehicles such as.

  Further, the bracket provided on the floor and functioning to hook the U-shaped wire or the bridging member in an emergency is a hinge for rotatably connecting the seat back as shown in the above embodiment to the floor. It is not necessary to be constituted by a bracket fixing tool, and may be separately provided on the floor for that purpose. Alternatively, a bracket provided on the floor for some purpose may be used as the bracket.

  Also, the U-shaped wire and the bridging member are pulled when the bent-back portion of the U-shaped wire is hooked to the protruding portion of the bracket at one of the front and rear bumps of the vehicle, and at the other time, the bridging member hits the bracket main body. It is only necessary to prevent the seat cushion from peeling off from the floor by hanging, and it does not matter which is hooked at any time. Moreover, in the said Example, although the U-shaped wire showed what was bent and formed so that planar view might become a U-shaped form, a U-shaped wire is a U-shaped side view in a side view. It may be formed into a shape (a shape in which the shape shown in Example 1 is laid sideways). The bridging member that is bridged between both sides of the U-shaped wire is not limited to a wire-like member, and may be a plate-like member.

1 Rear seat 3 Seat cushion 3P Cushion pad (pad)
3P1 Buckle through hole 3P3 Bent part through hole 3F Wire frame (frame)
3F1 Front wire 3F1a Attached wire 3F1b Push wire 3F1d Hook wire 3F1c Shaped wire 3F1e Hook plate 3F1e1 Hook hole 3F1f Hook plate 3F1f1 Neck part 3F2 Side wire 3F3 Rear wire 3U
3F3a1 One side 3F3b Cross-linking wire (cross-linking member)
3F3b1 Extension part 3F3b2 Bent part (hook part)
DESCRIPTION OF SYMBOLS 10 Insertion tool 11 Fixed part 11A Narrow area 11B Bottom part 11C Stabilizer 12 Movable part 12A Receiving hole 12B Locking claw 12C Return prevention claw 12D Bottom part 20 Bracket 21 Insertion hole 22 Hooking hole 22A Through hole 22B Hooking wall 22C Hooking wall 22C 30 Hinge bracket 31 Movable tool 32 Fixing tool (bracket)
32A Cut and raised part 32A1 Bent part (protruding part)
32B Recess (recess)
33 Rotating shaft ST1 Push-in coupling structure ST2 Emergency hook structure ST3 Emergency hook structure FP Floor panel

Claims (2)

An emergency hanging structure that prevents the seat cushion mounted on the floor from peeling off the floor when receiving a heavy load input due to a vehicle collision, etc.
A U-shaped wire bent into a U-shape provided on the seat cushion;
A bridging member bridged between both sides of the U-wire;
A bracket having a protrusion provided on the floor and set by being passed from one side into a space surrounded by the U-shaped wire and the bridging member;
Even if the seat cushion is pushed and moved by the front or rear collision of the vehicle, the bent-back portion of the U-shaped wire is hooked on the protruding portion of the bracket at one of the front and rear collisions of the vehicle. Sometimes, the bridging member hits against the main body of the bracket to prevent peeling of the seat cushion from the floor ,
The bridging member hits a recess formed in the main body portion of the bracket, and the bridging member hits the concave portion due to inertia due to collision of the seat cushion. An emergency hook structure characterized in that a hook-like hooking portion that hooks into the concave portion is formed to prevent slipping off from the hook . The emergency hanging structure according to claim 1,
The bracket is configured by a hinge bracket fixture for rotatably connecting a seat back to the floor, and the U-wire is fixed to a frame embedded in the seat cushion pad. it takes the structure of emergency, characterized by being et provided to protrude rearward.

Images