JPS6334990Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the seat structure of a cab-over type automobile.

In a conventional cab-over type automobile, as shown in FIG. 1, a service hole 3 is opened in a floor panel 2 located above an engine 1, and the service hole 3 is covered by a seat bottom 5 of a seat 4 so as to be openable and closable. However, even if the seat back 6 is folded forward and the seat bottom 5 is opened, the seat back 6 will not be folded parallel to the seat bottom 5, so the seat back 6 will hit the back panel 7 and the service hole 3 will be opened by about 45 degrees. Degree of opening (half open)
I could only open it.

In addition, the seat back 6 was sometimes torn because the seat back 6 was forced against the back panel 7 in an attempt to widen the opening of the service hole 3.

This invention was made in view of the above-mentioned conventional problems, and the rear part is hinged to the floor panel.
The seat bottom is attached to the upper surface of the engine cover whose front part is removably locked to the floor panel with a locking tool, and the seat bottom and the seat back are connected on both sides by a connecting member, and each connecting member The seat back and the seat bottom are pivotally connected by a first hinge shaft and a second hinge shaft located above the first hinge shaft, and one connecting member adjusts the seat back to tilt forward and backward about the first hinge shaft; The seat bag has a first lock mechanism that prevents the seat bag from being folded forward about the second hinge axis, and the other connecting member normally prevents the seat bag from falling forward about the second hinge axis, and also prevents the seat bag from falling forward about the second hinge axis. When the seat back is folded forward, it has a second lock mechanism that prevents the seat back from moving around the first hinge axis.These lock mechanisms are interlocked, and when the lock is released, the seat back is moved forward relative to the seat bottom. A lock release mechanism is provided that detects when the engine cover is opened and releases the lock mechanism, and automatically locks the seatback forward in conjunction with the opening operation of the engine cover. At the same time, the seat back is folded only parallel to the seat bottom, and the service hole can be opened to approximately 90 degrees (fully open), thereby preventing damage to the seat back. be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 3 to 6, a service hole 3 is opened in the floor panel 2 located above the engine, and the rear part of the engine cover 10 that covers the service hole 3 so as to be openable and closable is attached to the floor panel 2 by a hinge metal fitting. 11, 11 are hinged, and the front part is removably locked to the floor panel 2 with a shutter lever (locking tool) 12.

A sheet 4 is provided on the upper surface of the engine cover 10.
The seat bottom 5 is fixed, and the seat bottom 5
On the other hand, the seat back 6 is supported so as to be movable back and forth by connecting the bottom bracket 13 and the nutle bracket 14 on the A side and the bottom bracket 15 and the hinge bracket 16 on the B side by first hinge shafts 17, 17, respectively. ing.

Further, at a position above the first hinge shafts 17, 17, the nutle bracket 14 and the seat back 6 are connected on the A side, and the hinge bracket 16 and the seat back 6 are connected on the B side by the second hinge shafts 18, 18, respectively. The seat bag 6 is supported by brackets 14 and 16 so as to be tiltable forward.

A reclining mechanism 19 is housed between the bottom bracket 13 and the knuckle bracket 14 on the A side, and the reclining mechanism 19, for example, as shown in FIG.
By engaging the locking lever 42 on the bottom bracket 13 side with the sector 41 on the side, and operating the reclining lever 20, the locking lever 42 can be engaged and released, allowing the seat back 6 to be adjusted to any desired forward/backward tilting position. .

The nutle bracket 14 has a hook part 22a that supports a forward-folding lever 22 with a support pin 21, and locks a forward-folding lock pin 23 embedded in the seat back 6, and a hook part 22a that locks a forward-folding lock pin 23 embedded in the seat back 6. A locking part 22b that locks one end 25a of the inner cable 25 is provided, and a coil spring 27 compressed between the support bracket 26 of the outer cable 24 and the locking part 22b allows the forward-tilting lever 2
2 in the lock direction.

Next, as shown in FIG.
A hook portion 29a that locks a forward tilting lock pin 30 implanted in the seat back 6 in the same manner as the forward tilting lock pin 23 described above, and a detection lever 34 to be described later are engaged with the forward tilting lever 29. A coil spring 31 wound around the support pin 28 biases the forward lever 29 in the locking direction.

Further, the hinge bracket 16 has a support pin 32.
The engagement lever 33 and the detection lever 34 are supported by the lever, and the engagement pin 35 of the engagement lever 33 is abutted against the outer periphery of the semicircular bottom bracket 15 of the seat bottom 5. A forward-most inclined engagement groove 36 is provided in which the engagement pin 35 engages at the most forward-inclined position of the seat back 6.

The rising portion 33b of the engagement lever 33 faces within the rotation locus of the forward-folding lock pin 30, and the engagement pin 3 of the engagement lever 33 is moved by the forward-folding lock pin 30.
5 is removed from the forward-most inclined engagement groove 36.

The detection lever 34 includes the forward-folding lever 29.
a falling portion 34a that engages with the engaging portion 29b; a falling portion 34b that engages the engaging lever 33;
a locking portion 34c that locks the other end 25b of the inner cable 25 in the outer cable 24;
An engaging portion 34d that penetrates the engine cover 10 and engages the floor panel 2 is provided, and the falling portion 34a of the detection lever 34 and the hinge bracket 16 are provided.
The detection lever 34 is biased in the engagement direction by a coil spring 37 stretched between the coil spring 37 and the coil spring 37 .

With the seat structure as described above, if the seat back 6 is in the backward tilted position shown in FIG. 2, even if you remove the shutter lever 12 and try to lift the engine cover 10 upward, it will not engage as shown in FIG. 6. Since the engaging pin 35 of the lever 33 is held against the outer periphery of the bottom bracket 15, the falling portion 34b of the detection lever 34 is engaged with the engaging portion 33a, and the falling portion 34a is engaged with the forward-folding lever 29. In order to prevent the forward lock pin 30 from working, the forward lever 29
The seat back 6 will not be folded forward while it remains engaged.

Therefore, when the seat back 6 is in the rearward tilted position,
Since the seat back 6 hits the back panel 7, the engine cover 10 cannot be opened.

Next, when the reclining lever 20 is operated to adjust the seat back 6 to the most forward tilted position shown in FIGS. 3, 8 and 9, the engagement pin 35 of the engagement lever 33
is located above the most forwardly inclined engagement groove 36.

When the shutter lever 12 is removed in this state and the engine cover 10 is lifted upward, the engaging portion 34d of the detection lever 34 will be separated from the floor panel 2, so the detection lever 34 will be rotated clockwise by the coil spring 37 and engaged. The engagement pin 35 of the lever 33 engages with the forward-most inclined engagement groove 36, and the falling portion 34a of the detection lever 34 engages with the forward-inclined lever 29 to rotate it in the unlocking direction. In addition, inner cable 2
5, the forward lever 22 of the knuckle bracket 14 is also rotated in the unlocking direction at the same time.

Therefore, when the engine cover 10 is lifted further upward, the seat back 6 hits the back panel 7, but since it is in a free state, it is folded parallel to the seat bottom 5 around the second hinge shaft 18, and the seat back 6 hits the back panel 7. As shown in Figures 4 and 10, the service hole 3 can now be opened to an opening degree of 90 degrees (fully open).

The seat back 6 is attached to the engine cover 10.
You may also tilt it forward by hand while lifting it upward.

On the other hand, when the engine cover 10 is pushed down to close the service hole 3 and the shutter lever 12 is locked, the detection lever 3
4 and the forward-tilting lever 29 return to the position shown in FIG. 8, but the engagement pin 35 of the engagement lever 33 remains engaged with the most forward-tilting engagement groove 36.

Therefore, when the seat back 6 is tilted backward toward the rearward tilting position, the lock pins 30 and 23 are locked again by the forward folding levers 29 and 22, and at the same time, the lock pin 30 hits the rising portion 33b of the engagement lever 33. The engagement lever 33 is rotated in the disengagement direction, and the engagement pin 35 is removed from the forward-most inclined engagement groove 36 and returned to the position shown in FIG. 8.

As is clear from the above explanation, the present invention
A connecting member connects both sides of the seat bottom attached to the upper surface of the engine cover that opens and closes the service hole and the seat back, and each connecting member has a first hinge shaft and a second hinge shaft located above the first hinge shaft. The seat back and the seat bottom are pivotally connected by a hinge shaft, and one connecting member has a reclining mechanism that adjusts the seat back to tilt forward and backward around a first hinge shaft, and a first locking mechanism that prevents the seat back from falling forward around a second hinge shaft. The other connecting member normally prevents the seat bag from falling forward about the second hinge axis, and prevents the movement of the seat bag about the first hinge axis when the seat bag moves forward about the second hinge axis. It has a second locking mechanism for blocking, these locking mechanisms are interlocked,
When the seat is unlocked, the seat back is folded forward relative to the seat bottom, and the seatback is equipped with a lock release mechanism that detects when the engine cover is opened and releases the lock mechanism.
The forward tilting lock of the seat bag can be automatically released in conjunction with the opening operation of the engine cover at the most forward tilted position of the seat bag, and the opening operation of the engine cover can be easily and quickly performed.

Further, the seat back can be folded parallel to the seat bottom, the service hole can be fully opened with the engine cover, and the seat back is not forcibly pressed against the back panel, so it will not be damaged.

[Brief explanation of the drawing]

Figure 1 is a side view of a cab-over type car, Figure 2
The figure is a perspective view of the seat when tilted backwards, Figure 3 is a perspective view of the seat when it is tilted most forward, Figure 4 is a perspective view of the seat when the engine cover is fully open, and Figure 5 is a partially omitted reclining side. Fig. 6 is a front view of the mechanism on the hinge bracket side when tilting backwards as seen from the knuckle side, Fig. 7 is an exploded perspective view of Fig. 6, and Fig. 8 is a see-through view from the knuckle side. Figure 9 is a front view of the mechanism on the hinge bracket side when the engine cover is tilted most forward, as seen from the top.
11 is a perspective view of the seat when the engine cover is fully open, FIG. 11 is a front view of the mechanism on the hinge bracket side when the seat back is tilted backwards as seen from the knuckle side, and FIG. 12 is a front view of the reclining mechanism. 1...Engine, 2...Floor panel, 3...
Service hole, 4... Seat, 5... Seat bottom, 6... Seat back, 10... Engine cover, 11... Hinge fittings, 12... Shutter lever, 17... First hinge shaft, 18... First 2 hinge shaft, 19... reclining mechanism, 20...
Reclining lever, 22, 29... Forward lever, 23, 30... Forward folding lock pin, 25... Inner cable, 33... Engagement lever, 34...
Detection lever, 35... Engagement pin, 36... Most forward-inclined engagement groove.

Claims (1)

[Scope of Claim for Utility Model Registration] A service hole is opened in the floor panel located above the engine, the rear part of the engine cover that covers the service hole can be opened and closed freely, and the rear part is hinged to the floor panel, and the front part is attached to the floor panel. In a cab-over type automobile that is removably locked with a stopper, a seat bottom is attached to the upper surface of the engine cover, and both sides of the seat bottom and the seat back are connected by a connecting member, and each connecting member is , the seat back and the seat bottom are pivotally connected by a first hinge shaft and a second hinge shaft located above the first hinge shaft, and one connecting member includes a reclining mechanism for adjusting the seat back to tilt forward and backward about the first hinge shaft, and a second hinge shaft located above the first hinge shaft. The seat bag has a first lock mechanism that prevents the seat bag from falling forward about the second hinge axis, and the other connecting member usually prevents the seat bag from falling forward about the second hinge axis, and also prevents the seat bag from falling forward about the second hinge axis. It has a second lock mechanism that prevents the seat back from moving around the first hinge axis when the seat is folded forward, and these lock mechanisms are interlocked.
A cab-over type automobile, characterized in that the seatback is folded forward relative to the seat bottom when the lock is released, and is provided with a lock release mechanism that detects opening of the engine cover and releases the lock mechanism. seat structure.