JPS6347146Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a folding mechanism for a seat behind the driver's seat in a passenger/freight vehicle and the effective use of its configuration.

Some conventional passenger/freight vehicles have two or more rows of front seats B and rear seats C arranged parallel to the driver's seat A in the rear compartment behind the driver's seat A. Seat B fixed to the floor (Figure 1)
There are also models with the driver's seat A that can be folded towards the rear (Fig. 2), but in both the former and latter types, the rear seat C has its back A placed on the seat B, and the back It has a structure in which the legs (C) can be folded toward the bottom surface (D) of the seat (B), and the front legs (E) are rotatably pivoted to the floor. The rear seat C was folded up by tilting the seat B along with the front legs E toward the rear of the front seat B, but the distance between the overlapped seat B and back A could approach the front direction, that is, the front seat B side. is limited to the length between the bottom surface D of the front leg E of the seat B and the axis G and C of the floor, so if the front seat B is a fixed type (Fig. 3), the rear seat folded C is only close to the back of front seat B, and if front seat B is a folding, rotating and standing type (Figure 4), front seat B and rear seat C are
However, this space is insufficient for cargo storage, and even though the rear seat C is swiveled up, there is not as much space behind the rear seat C as expected. There was a problem that there was no continuous increase in luggage storage space.

The present invention uses a conventionally known mechanism for the front seat B, the back seat A,
The rear legs (C) are folded, and the seat (B) and front legs (E) are folded toward the driver's cab so that they can be rotated and raised.In particular, the seat (B) of the rear seat C can be rotated and raised relative to the front legs (E), and the lower end of the front legs (E) is , the rear seat C is connected to the floor 17 so as to be rotatable and erectable toward the front seat B via a four-bar link bending mechanism G that is parallel to the floor and whose pivot point is shifted.
The rear seat C is rotated to stand up as close as possible to the rear side of the front seat B while the seat B and back A of the seat A are kept in their seat configuration without being folded. This idea is intended to make it possible to maintain a continuous floor surface and space as a luggage compartment above and behind the rear surface 37a of the vehicle.

An embodiment of the present invention will be explained with reference to a drawing illustrating a passenger/freight vehicle in which two rows of front seats B and rear seats C are arranged behind the driver's seat A. 1 is provided in the vehicle body, and A is provided in the driver's cab 2. The driver's seats, B and C are front seats and rear seats that are arranged parallel to the rear of the driver's seat A in the rear compartment 3 which serves as a luggage compartment and passenger compartment (Fig. 5).

The front seat B (FIG. 8) is connected to the rear side of the seat 4 and the lower side of the back 5 via a reclining mechanism D, and the back 5 is attached to the seat 4 so that it can be raised and lowered. In the reclining mechanism D (FIG. 9), the lower end of the rotary plate 7, which is fixed to the lower side of the back part 5, is overlapped with the rear end of the fixed plate 6, which is fixed to the rear side of the seat part 4. A curved part 8a of an L-shaped lever 8 is rotatably supported by a shaft 9 in the middle of the lever 8, and an engaging part 8c at the rear end of the horizontal part 8b engages and disengages with a projection 10 at the lower end of the rotating plate 7. A spring 11 is stretched between the middle of the horizontal portion 8b and the rear portion of the fixed plate 6. The spring 11 has inward elasticity, that is, the engaging portion 8c of the lever 8.
The rotary plate 7 has elasticity to pull the horizontal portion 8b downward in order to keep it locked to the protrusion 10.
A shaft 12, which is the center of rotation of the back part, is provided protrudingly in the middle of the shaft 12, and holes 13a and 13b are formed in the cover 13, which prevents the back part 5 from rotating more than necessary. The shaft 9 is fitted, and the cover 13 is attached to the side surface of the fixed plate 6 and the rotating plate 7. Then, the peripheral wall 13c of the cover 13 is partially cut out at the rear part to provide a notch 13d,
Tilt the lever 8 forward about the shaft 9 to release the engaging portion 8.
c is removed from the protrusion 10, and when the rotary plate 7 is rotated forward about the shaft 12, the protrusion 10, which is displaced backward together with the rotary plate 7, passes through the notch 13d and the cover 13 is rotated. The projection 10 is formed so that connecting rods 14 and 38, which will be described later, can be engaged with the projection 10.

An engagement recess 14a is provided at the tip of the upper side of the back portion 5.
A connecting rod 14 provided with a shaft 15 is rotatably supported by a shaft 15. To explain one of the front legs provided on the left and right sides in front of the bottom surface 4a of the seat portion 4, the front legs 16
The upper end of the front leg 16 and the lower end of the front leg 16 are supported on the floor 17 by shafts 20 and 21 via brackets 18 and 19, respectively, and further behind the bottom surface 4a of the seat 4 are upwardly U-shaped rear legs 22. Bracket the upper left and right edges 2
The rear legs 22 are rotatably supported on the bottom surface 4a of the seat 4. The center of the horizontal part 22a of the rear leg 22 and the floor 17
is provided with a locking mechanism E. The lock mechanism E
(FIGS. 10 and 11), a rectangular locking piece 28 at the lower end of the pin 27 is fixed horizontally, and a threaded portion 27a with a smaller diameter than the pin 27 is provided at the top, and the threaded portion 27a is attached to the rear leg 22. The horizontal part 22a of the handle 29 is passed through and protruded upward, and the tip 29a of the handle 29 is passed through, and then the nut 30 is screwed on.
9 is rotated in the horizontal direction, the locking pieces 28 are formed to rotate together, and furthermore, a lock bracket 31 is provided on the floor 17 at a position facing the locking pieces 28.
to be fixed. The lock bracket 31 has a box shape with a space in which the locking piece 28 can be fitted and rotated, and has a rectangular shape similar to the locking piece 28 on the top surface, and a bottom area that is larger than the bottom area of the locking piece 28. A window hole 32 with a large opening area is bored, and recesses 33 and 34 are formed at symmetrical positions at the corners of the opposite periphery of the window hole 32.
A flange 35 for fixing to the floor is provided protruding from the lower outer peripheral edge of the lock bracket 31.

The rear seat C (FIG. 12) is provided with a reclining mechanism D, which is the same mechanism as that attached to the front seat B, at the rear side of the seat 36 and at the lower side of the back 37, so that the seat 36 and the back 37 can be connected. By linking and raising and lowering the lever 8, the back part 37 can be folded over the seat part 36 or held in an inclined position. In the middle of the side surface of the back part 37, a connecting rod 38 having an engaging recess 38a at its tip is rotatably supported by a shaft 37b.

Furthermore, front legs 40 are provided on the left and right sides of the bottom end of the rear seat C.
To explain the relationship between the stopper mechanism F and the four-bar link bending mechanism G on the left side of the left and right sides (Figures 13 and 14), the tip of the bottom surface 36a of the seat 36 of the rear seat C. U-shaped bracket 3
The upper end of the front leg 40 is rotatably supported on the bracket 39 by a shaft 41, and a hole 42 is bored in the upper end surface through which a pin 43 of a stopper mechanism F to be described later can be engaged and detached. The stopper mechanism F includes a guide rod 43a connected to the rear of the pin 43, a spring 44 having an outward elasticity inserted into the guide rod 43a, and an opening 4 at the tip for the pin 43 to emerge and retract.
5a and a hole 45b at the rear end that can pass through the guide rod 43a.
A handle that has a guide rod 43a and a spring 44 inside, the rear part of the guide rod 43a projects outward from a hole 45b, and slides along a guide elongated hole 45c bored in the longitudinal direction of the outer periphery of the tip of the cylinder 45. 46 is fixed perpendicularly to the rear side surface of the pin 43. Then, an opening 45 of the cylinder 45 is formed in the rear wall 39a of the bracket 39.
The a side is fixed through the seat part 36 so that it coincides with the front and back direction of the seat part 36, and the tip of the pin 43 normally protrudes into the bracket 39 due to the elasticity of the spring 44.
The tip 43b of the front leg 40 is in pressure contact with the rear part of the front leg 40.

Next, to explain the four-bar ring bending mechanism G, L ₁ and L ₂ are located at the lower end of the front leg 40 and face toward the front of the front leg 40, that is, toward the front seat B, and are also directed toward each other and the floor 17. These are two links of the same length that are pivoted and connected to the front leg 40 in parallel. The rear end of the outer link L ₁ is rotatably connected to the lower end of the front leg 40 by a shaft P ₂ , and the inner link L ₂ is connected to the lower end of the front leg 40 so as to be rotatable.
Shift the rear end slightly forward of L ₁ and insert it into the shaft.
The front leg 4 is connected to the front leg ₄ by the axis P 4 which is parallel to P ₂ and extends toward the outer link L ₁ and also contacts the outer link L ₁ .
The inner link is rotatably supported on the tip of a secondary leg 47 that is fixed in parallel to one side 40a of the lower end of the
The front end of L ₂ and the front end of outer link L ₁ are connected to the mounting plate 48.
The mounting plate 48 is attached to the lower _end of _{the front} leg ₄₀ of the rear seat C. shaft
Bolt 4 is attached to the floor 17 at an intermediate position between P ₂ and the shaft 21 of the front leg 16 of the front seat B on the floor 17 side.
Fix by 9.

H is a locking mechanism (Fig. 15) for fixing the front legs 40 to the floor 17, which is similar to the locking mechanism E (Figs. 10 and 11) provided on the rear legs 22 of the front seat B. In place of the horizontal part 22a in the mechanism,
An upright portion 50 of a fixture 50 having an L-shaped longitudinal section
a is fixed to the lower end of the outer surface of the front leg 40, a convex part 50c is formed on the horizontal plate part 50b, a pin 27 is made to stand upright on the rectangular locking piece 28, and a pin 27 is placed above the pin 27. A small diameter screw portion 27a is provided,
The threaded portion 27a is connected to the convex portion 50 of the horizontal plate portion 50b.
c and protrudes from the tip 29 of the handle 29.
The nuts 30 are screwed together so that they protrude from the rear legs 22 of the front seat B on the floor 17 side. Lock mechanism E for fixing to the floor
A lock bracket 31 having the same structure as the lock bracket 31 which is a part of the lock bracket 31 is fixed. The lock bracket 31 is located at a position facing the horizontal plate portion 50b of the fixture 50 when the rear seat C is installed in the rear compartment 3 so that it can be seated, and when the rear seat C is rotated and raised toward the front seat B side. It is fixed to the floor 17 at both the position where the horizontal plate portion 50b of the fixture 50 is displaced. 5
1 is an upward U-shaped hind leg, and the upper left and right ends are seat parts 3
6, shafts 54, 5 are rotatably bent toward the bottom surface 36a via brackets 52, 53.
Supported by 5. and the horizontal rod 51 of the hind leg 51
In the center of a, there is a horizontal part 22a of the rear leg 22 of the front seat B.
A lock mechanism I having a structure similar to that of the lock mechanism E provided in the above is provided.

56 is when the front seat B is folded, rotated and raised (first
8 and 19) is a lock band that connects the lower part of the back surface 5a of the back section 5 and the outer frame 57 of the engine storage section to prevent rocking, and is a lock band that connects the rear surface 4b of the seat section 4 of the front seat B.
A connecting tool 56b is vertically installed through a belt 56a.
is formed so as to be freely engageable and detachable from an anchor plate 56d vertically disposed on the outer frame 57 via a belt 56c. Next, the function and method of use of the present invention will be explained.

When folding only the rear seat C (Fig. 17), push the lever 8 in the reclining mechanism D of the rear seat C (Fig. 9) forward against the elasticity of the spring 11, and then move the lever 8 around the shaft 9. When the engaging portion 8c is rotated forward, the engaging portion 8c is disengaged from the protrusion 10, and the back portion 37, together with the rotating plate 7, falls forward about the shaft 12 and the seat portion 36 is rotated forward.
Polymerized and folded on top. Next, the horizontal rod 51 of the rear leg 51
The pin 27 is rotated by rotating the handle 29 of the locking mechanism I provided in a so as to be parallel to the horizontal rod 51a, and the lock that intersects with the window hole 32 in the lock bracket 31 is removed. The locking mechanism I is released by rotating the piece 28 so that it is parallel to the window hole 32. (FIGS. 10 and 11) Then, the seat portion 36 with the back portion 37 overlapped thereon is rotated forward about the shaft 41 at the upper end of the front leg 40 to stand up. As shown in FIG. 14, as the seat 36 rotates and stands up, the bracket 39 and the stopper mechanism F also stand up, and the pin 43 of the stopper mechanism F is displaced onto the hole 42 at the upper end of the front leg 40.
The pin 43 is pushed into the cylinder 45 by the elasticity of the spring 44.
The tip 43b of the pin 43 is pushed out from the hole 42.
The seat portion 36 is fixed vertically to the front leg 40 (FIG. 16). Next, attach the rear legs 51 to the seat 3.
The back part 37 is brought close to the back part 5 of the front seat B together with the seat part 36, and in this state, the connecting rod 14 on the side of the back part 5 of the front seat B is rotated and bent. When the rotary plate 7 is tilted forward, the mating recess 14a is displaced through the notch 13d of the peripheral wall 13c of the cover 13 of the reclining mechanism D of the rear seat C, and the projection 10 appears at the rear of the cover 13. The seat part 36 and the back part 37 of the rear seat C which are engaged and bent are fixed to the back part 5 of the front seat B, and the floor surface where the rear seat C was provided is used as a cargo loading surface.

When the rear seat C is to be unfolded, the connecting rod 14 is removed from the back 37 of the rear seat C in the opposite manner to the above, and the handle 46 of the stopper mechanism F is pushed upward against the elasticity of the spring 44 to remove the tip 43b of the pin 43 from the hole 42, and the seat 36 is rotated rearward about the axis 41 while the rear legs 51 are unfolded toward the floor, and the engaging piece 28 of the lock mechanism I is fitted into the lock bracket 31 through the window 32 of the lock bracket 31. Then, the handle 29 is rotated in a direction perpendicular to the horizontal rod 51a of the rear leg 51 to rotate the engaging piece 28 in a direction intersecting the window 32, thereby locking the lock mechanism I and fixing the rear leg 51 to the floor 17.
The back 37 is raised about the shaft 12. At this time, the pivot plate 7 of the reclining lever of the back 37 is also raised, and the protrusion 10 is engaged with the engagement portion 8c of the lever 8.

Next, when folding the front seat B forward and raising it up, the rear seat C is rotated and raised close to the front seat side while maintaining its seat shape (Fig. 18). First, the reclining mechanism of the front seat B ( 9), the back 5 is tilted forward about the shaft 12 in the same way as in the case of the rear seat C, so that it overlaps the seat 4, and the handle 29 of the locking mechanism E of the rear leg 22 is rotated. Rotate to unlock, rotate the seat 4 forward about the shafts 20 and 21 at the upper and lower ends of the front legs 16, and then rotate the rear legs 22 and fold them onto the bottom surface 4a of the seat 4. The front seat B is connected and fixed to the outer frame 57 by a lock band 56 in which a connecting tool 56b vertically provided on the rear surface 4b is fitted and engaged with an anchor plate 56d vertically provided on the outer frame 57.

Next, as shown in FIGS. 19 and 20, the handle 29 of the locking mechanism I of the rear leg 51 of the rear seat C is rotated to unlock the rear leg 51 so that the rear leg 51 can be lifted off the floor 17. When the seat part 36 is rotated forward about the shaft 41 while the seat part 36 and the back part 37 are in a state where the user can sit without bending them, the bracket 39 is rotated together with the seat part 36.
The stopper mechanism F also rotates, and the pin 43 engages with the hole 42 by the elasticity of the spring 44, and the seat 36 is fixed in the vertical direction like the front leg 40.
During this time, the rear legs 51 are bent toward the bottom surface 36a of the seat portion 36. Next, the handles 29 of the left and right locking mechanisms H that fix the lower ends of the front legs 40 to the floor 17 are rotated to remove the locking pieces 28 from the lock bracket 31 and unlock the seat 36. When lifted upward, the front leg 40, secondary leg 47, outer link L ₁ ,
The inner links L ₂ are simultaneously displaced diagonally upward about the axes P ₂ , P ₄ , P ₁ , and P ₃ , and the outer links L ₁ :Both the inner links L ₂ and the front legs 40 stand upright above the mounting plate 48 . When the seat portion 36 is further moved forward, the outer link L ₁ and the inner link L ₂ are rotated forward about the axes P ₁ and P ₃ , and during this time the lower end of the front leg 40 is moved to the outer link.
_L1 inner link _L2 is bent while rotating around axes _P2 and _P4 , and outer and inner links _L1 and _L2 are bent at floor 1.
7, the front legs 40 stand upright on the floor 17 together with the seat 36. Therefore, when the front legs 40 are in the upright position, they lock into the window hole 32 of the lock bracket 31 that has been previously fixed on the floor 17. After fitting the locking piece 28 of the mechanism H, the handle 29 is rotated to lock the locking mechanism H and the lower end of the upright front leg 40 is fixed to the floor 17. Close to the bottom surface 4a of the seat portion 4 of the seat B, the back portion 37 is fixed horizontally above the front seat B with the back surface 37a facing upward. Then, the engagement recess 38a of the connecting rod 38 of the seat 36 of the rear seat C is engaged with the protrusion 10 exposed from the cover 13 of the reclining mechanism D of the front seat B, thereby connecting the front seat B and the rear seat C. do.

Next, if you want to return the rear seat C and the front seat B to their old positions, first remove the connecting rod 38, contrary to the above case.
Rotate the handle 29 of the lock mechanism H to unlock it,
When the locking piece 28 is removed from the window hole 32 of the lock bracket 31 and the entire rear seat C is lifted upward, the lower ends of the front legs 40 are centered around the axes P ₂ and P ₄ .
In addition, the outer and inner links L ₁ and L ₂ are rotated diagonally upward and rearward about the axes P ₁ and P ₃ to stand upright on the mounting plate 48, and when the rear seat C is further displaced rearward, the front legs 40
And the outer and inner links L ₁ and L ₂ are rotationally displaced diagonally downward and backward. When the outer and inner links L ₁ and L ₂ are parallel to the floor 17, the locking piece 28 of the locking mechanism H
passes through the window hole 32 of the rear lock bracket 31 and fits into the lock bracket 31, so the locking piece 28 is rotated by the handle 29 to lock the lock mechanism H, and the lower end of the front leg 40 and Internal and external links
L ₁ and L ₂ are fixed to the floor 17. Next, the front legs 40
Grasp the handle 46 of the stopper mechanism F at the upper end and push up against the elasticity of the spring 44 to remove the pin 43.
is removed from the hole 42, the seat 36 is rotated rearward together with the bracket 39 and the stopper mechanism F around the shaft 41, and at the same time, the rear leg 51 is extended to the floor 17 side, and the handle 29 of the lock mechanism I of the rear leg 51 is rotated. By turning and locking the rear legs 51 to fix the rear legs 51 to the floor 17, the rear seat C returns to its old position where it can be occupied. Then, for the front seat B, connect the connector 56b of the lock band 56 to the anchor plate 5 in the opposite way to when it is folded.
6d to release the connection between the front seat B and the outer frame 57, rotate the front legs 16 rearward about the shafts 20 and 21 at the upper and lower ends, and at the same time deploy the rear legs 22 to the floor 17 side, and lock the lock mechanism E. The locking piece 2 together with the handle 29
Turn 8 to lock the lock bracket 31, and then lock the rear leg 2.
2 is fixed to the floor 17, and the back part 5 is further pulled rearward around the shaft 12, so that the protrusion 10 of the rotating plate 7 moves to the lever 8.
By engaging with the engaging portion 8c, the back portion 5 is returned to its original position and is erected and fixed on the seat portion 4.

According to the present invention, when the rear compartment of the vehicle body is used as a luggage compartment, only the rear seats are folded toward the front seats and rotated to stand up, and the floor surface and space where the rear seats were installed are used for the rear seats. It can be used continuously with the floor and space at the rear (Figure 6), and if necessary, the front seats can be folded forward and the rear seats can be left upright against the seat without folding the back. The folded front seats are rotated to stand up, but the forward rotation of the rear seats is done via a four-bar link folding mechanism, so there is no unnecessary space between the rear seats and the front seats. The driver will stand up very close to the front seats (Figure 19), and the rear seats will rotate and stand up on the floor where the front seats were extended, so the front and rear seats will not be extended. Since the floor surface and space behind them can be used continuously with the floor surface and space behind them, the cargo loading space is significantly expanded, and the effect of increasing the cargo loading capacity due to the folding of the seats is large, making it possible to use a vehicle that can be used for both cargo and passenger purposes. The utility value as a material is significantly improved (Figure 7). In addition, since the back of the rear seat, which rotates upright, remains horizontal, it can be used as a barrier for loading luggage (Figure 19).

Furthermore, since the front legs of the rear seat and the floor are connected via the four-bar link bending mechanism, the lower ends of the front legs and the floor are connected to each other even during the displacement operation to rotate and raise the rear seat as shown in Figure 21. Since it is supported by two pivot points, the bottom of the front leg always remains horizontal to the floor (i.e., the front leg itself remains upright to the floor), and one of the front legs also The forward and backward rotation of the link relative to the floor can be performed reliably without shaking, and even in the link mechanism of the left and right front legs, due to the phase error in the trajectory when each link is displaced, one of the front legs may The left and right front legs can be operated smoothly and reliably while always remaining parallel to each other without causing any distortion that would cause the other front leg to move backward.

In addition, the link mechanism is performed only by the left and right outer links connected to the left and right front legs,
When lifting the rear seat while still seated and starting to rotate it, due to the relationship between the load on the rear seat and the position in which the rear seat is displaced diagonally upward, the load is applied to the front legs and outer links, causing the front legs to move outward. This creates a tendency for the link to bend forward about the axis at the rear end, and at the same time, there is a risk that the outer link itself, which rotates and stands up about the axis at the tip, may be twisted or distorted in the direction of rotation. In this case, the link mechanism is a four-bar link, and the inner link is arranged in parallel to the outer link, and the rear end of the inner link is rotatably connected to the secondary leg which is fixed to the front leg in parallel with the front leg. The inner link can be rotated and raised together with the link, and the shaft at the rear end of the inner link is extended over the outer link and is always in contact with the outer link to hold down the outer link. Twisting and distortion in the rotational direction caused by this movement are suppressed, and the rotational direction of the outer link can be kept normal and rotation can be performed reliably.

[Brief explanation of the drawing]

Figures 1 to 4 show a conventional passenger/cargo vehicle with a front seat and a rear seat behind the driver's seat, as well as its main parts. Figure 1 shows a fixed front seat and a foldable rear seat. Figure 2 is a schematic side view of a vehicle with both front and rear seats foldable, and Figure 3 is a summary of Figure 1 with the rear seats folded. FIG. 4 is an enlarged view of the main part of FIG. 2, showing the front and rear seats in a folded state using imaginary lines. 5 to 21 show embodiments of the present invention. Figure 5 is a schematic side view of a vehicle equipped with this mechanism, Figure 6 is a schematic side view of a vehicle with only the rear seats folded and turned up, and Figure 7 is a side view of the vehicle with the front seats folded and the rear seats raised. Fig. 8 is a perspective view of the front seat, Fig. 9 is an exploded perspective view of the reclining mechanism, and Fig. 10 is a schematic side view of the vehicle in the upright position. FIG. 11 is a perspective view showing the locked state of the lock mechanism shown in FIG. 10, FIG. 12 is a perspective view of the rear seat, and FIG. 13 is a perspective view of the left and right rear seats. The left front leg of the front leg and the stopper mechanism for the front leg and 4
Enlarged perspective view of the connecting part of the joint link bending mechanism, 1st
Figure 4 is an enlarged sectional view of the upper end of the front legs and the stopper mechanism, Figure 15 is an exploded perspective view of the locking mechanism that fixes the front legs of the rear seat to the floor, and Figure 16 is an exploded perspective view of the lock mechanism that fixes the front legs of the rear seat to the floor. Fig. 17 is a side view showing the operation of folding and rotating only the rear seats, and Fig. 18 shows the operation of folding and rotating the front seats. A side view, FIG. 19 is a perspective view showing the operation of rotating and raising the rear seat behind the front seat that has been folded and turned to stand up, and FIG. 20 is a perspective view showing a transition state in which the rear seat is turned and raised. FIG. 21 is an explanatory diagram showing the displacement of the front legs of the rear seat and the four-bar link bending mechanism during a rotational raising operation. Code, A...back, B...seat, C...hind legs,
D...bottom, H...front legs, H...floor, G, CH...
Axle, A...driver's seat, B...front seat, C...rear seat, D
...Reclining mechanism, E...Lock mechanism (of the rear legs of the front seat), F...Stopper mechanism, G...4-bar link bending mechanism, H...Lock mechanism (of the front legs of the rear seat), I...Lock Mechanism (of the rear legs of the rear seat), 1... Vehicle body, 1a... Inner wall, 2... Driver's cabin, 3... Rear compartment,
4... Seat, 4a... Bottom, 4b... Rear, 5...
... Back, 5a... Back, 6... Fixed plate, 7... Rotating plate, 8... Lever, 8a... Curved part, 8b...
Lateral part, 8c... Engaging part, 9... Shaft (of lever 8),
10...Protrusion, 11...Spring, 12...Shaft (center of back 5), 13...Cover, 13a, 13b...
...hole, 13c...peripheral wall, 13d...notch, 1
4... Connection rod, 14a... Engagement recess, 15...
Axis, 16... Front leg, 17... Floor, 18, 19...
Bracket, 20, 21...shaft, 22...hind leg,
22a...Horizontal part, 23, 24...Bracket,
25, 26...shaft, 27...pin, 27a...screw part, 28...locking piece, 29...handle, 29
a...Tip part, 29b...Gripping part, 30...Nut, 31...Lock bracket, 32...Window hole,
33, 34... recess, 35... rim, 36... seat, 36a... bottom, 37... back, 37a...
Back side, 37b... shaft, 38... connecting rod, 38a...
...Engagement recess, 39...Bracket, 39a...Rear wall, 40...Front leg, 40a...Side surface, 41...
Shaft, 42...hole, 43...pin, 43a...guide rod, 43b...tip (pin), 44...spring, 45...tube, 45a...opening, 45b...
Hole, 45c... Guide slot, 46... Handle,
L ₁ ... Outer link, L ₂ ... Inner link, 47 ... Secondary leg, P ₁ , P ₂ , P ₃ , P ₄ ... Shaft, 48 ... Mounting plate,
48a, 48b, 48c... shaft support plate, 49... bolt, 50... fitting (L shape), 50a... upright part, 50b... horizontal plate part, 50c... convex part, 5
1... Hind leg, 51a... Horizontal rod, 52, 53...
Bracket, 54, 55...shaft, 56...lock band, 56a...belt, 56b...coupling tool,
56c...Belt, 56d...Anchor plate, 57...Outer frame (of the engine).

Claims (1)

[Scope of utility model registration request] In a passenger/freight vehicle in which a front seat B and a rear seat C are provided at the rear of a driver's seat A, a front leg 40 is rotatably supported on the seat 36 of the rear seat C, and the lower end of the front leg 40 is attached to a four-section joint. Through the link bending mechanism G, the front seat B is connected to the floor 17 so that it can rotate and stand up close to the front seat B, and the back seat C is moved forward while the back part 37 of the rear seat C remains upright with respect to the seat part 36. Rotate and stand up to seat B side, back 3
7 above the front seat B, the seat 36 can be raised close to the front seat B, and the space including the space above the back surface 37a of the rear seat C can be utilized as much as possible. Folding mechanism for the seat behind the driver's seat.