JPS633529Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a seat device for a cab-over type automobile.

Conventionally, as shown in FIGS. 1a and 1b, in a cab-over type automobile, an engine inspection port 1a is formed in a floor panel 1 located above the engine, and a seat bottom 2 that also serves as a cover for the inspection port 1a is provided. Attach the rear part to the floor panel 1 with hinge metal fittings 3, 3
At the same time, the front part of the seat bottom 2 is self-locked by engaging a striker 5 attached to the floor bottom 1 with a lever lever 4 provided on the floor panel 1 and biased in the engaging direction by a spring. , there is one in which the shutter levers 6, 6 are fully locked with the floor panel 1 (Utility Model Application No. 57-59136).

However, with the above-mentioned lock mechanism, when flipping up the seat such as during engine service, after unlocking the snap locks 6, 6, use one hand to push the lever 4.
Since it is necessary to flip up the floor bottom 1 with the other hand while manually operating the lever in the disengagement direction, the operation is cumbersome, and the foot lever 4 itself needs to perform a self-locking operation when the striker comes into contact with it. Therefore, it was difficult to ensure a sufficient depth of engagement with the striker, and there was a problem that the engagement could be unexpectedly disengaged due to vibration or the like.

The present invention was developed in view of the above-mentioned conventional problems, and when the foot lever is manually operated in the disengagement direction, the engagement lever automatically holds the engagement lever in the disengagement position, allowing the user to flip up the seat bottom. In addition, when setting the seat bottom, the foot lever is fully locked via the engagement lever that comes into contact with the striker, so that the engagement with the striker is more secure. This is what I did.

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

As shown in FIGS. 2a and 2b, the cab-over type vehicle 11 has a cabin 15 at the front of the vehicle body.
The floor panel 12 includes a floor panel 12 whose rear side is located above the engine 13, radiator 14, etc., an engine inspection port 12a is formed in the floor panel 12, and the rear part of the engine cover 16, which can be freely opened and closed, is provided on the floor panel 12. Hinge metal fitting 17 on panel 12
Fix it with.

The engine cover 16 has a seal rubber 2
The seat bottom frame 19 (see Fig. 3) of the seat bottom 18 is attached to the seat bottom frame 18 via the seat bottom frame 19 (see Fig. 3), and the seat back 21 is attached to the rear bracket 20 of the seat bottom frame 19 so as to be tiltable forward with a hinge pin 22. By tilting the engine cover 16 and flipping up the seat bottom 18 rearward, the inspection port 12a can be opened.

Note that 23 is a dart board at the front of the cabin 15, 24 is a steering handle, and 25 is a change lever.

On the other hand, a shutter lever mechanism 29 is provided in which a latch 27 is fixed to one side of the front part of the engine cover 16, and a shutter lever 28 that engages with the latch 27 is fixed to the floor panel 12.
On the other front side of the engine cover 16, a self-locking mechanism 30 is provided on the seat bottom frame 19 and the floor panel 12, and the self-locking mechanism 30 and the shutter lever 28 lock the engine cover 16, that is, the seat bottom 18. floor panel 1
It will now lock to 2.

As shown in detail in FIGS. 3 and below, the self-locking mechanism 30 includes a striker 31 fixed to the floor panel 12 in front of the seat bottom frame 19 located on the other side of the front part of the engine cover 16;
A support shaft 32 is provided at the front of the seat bottom frame 19.
It basically consists of a hook lever 33 which is pivotally connected to the lever 33, an engagement lever 35 which is pivotally connected to the support shaft 34, and a coil spring 36.

The hook lever 33 has an arcuate hook portion 33 that can be engaged with the striker 31 from the forward rotational direction.
a, and the long hook edge 33 of the hook portion 33a
b is not made to match the radius circle r of the support shaft 32, but is set so that the radius circle gradually decreases toward the inside, so that the striker 31 is deeply engaged with the hook edge 33b. Striker 31 in the back
A fitting portion 33c is formed to ensure engagement with the striker 31 when fully locked.

The above-mentioned foot lever 33 has a knob 3 for manual operation.
7, and an engagement stepped portion 33d for locking the hook lever 33 at the striker disengagement position with the engagement lever 35.

The upper end portion 35a of the engagement lever 35 has a falling engagement claw 35 that engages the engagement step portion 33d.
b, and the lower end 3 of the engagement lever 35.
5c extends above the striker 31.

A coil spring 36 is wound around the support shaft 32, and one end 36a of the coil spring 36 is connected to the foot lever 3.
3 into the spring hole 33e, and the other end 3
6b is a rising bent portion 35d of the engagement lever 35.
Hook it into the spring hole (not specifically shown).
At the same time, the hook lever 33 is biased in the striker engagement direction (left rotation direction in the figure), and the engagement lever 35 is biased in the striker contact direction (left rotation direction in the figure).

If the seat device is configured as described above, when the seat bottom 18 is flipped up as shown in FIG.
The engagement stepped portion 33d of the foot lever 33 is engaged with the locking pawl 35b of the engagement lever 35, and the foot lever 33 is held at the striker disengagement position.

Next, when the seat bottom 18 is tilted forward from the seat flip-up state as shown in FIG. Part 33d
is released, the foot lever 33 rotates to the left in the striker engagement direction by the biasing force of the coil spring 36, engages with the striker 31, and moves the seat bottom 1.
8 becomes self-locking.

In this self-locked state, the foot lever 33
Since the hook portion 33a is only lightly engaged with the striker 31, when the knob 37 is manually operated to further rotate the hook lever 33 to the left as shown in FIG.
1, so that the seat bottom 18 is fully locked.

In this fully locked state, the striker 31 is fitted into the fitting part 33c, and from the cell locked state, the engine cover 16 closes the inspection opening 12a while compressing the seal rubber 26 provided around the periphery of the engine cover 16. The elastic force of the seal rubber 26 eliminates rattling of the seat bottom 18.

Then, the seat bottom 18 is locked by the shutter lever mechanism 29 to complete the setting.

To flip up the seat bottom 18 from the fully locked state, first unlock the shutter lever 29, then manually operate the knob 37 to pull the lever 33 in the direction of disengaging the striker (rotate to the right).
When the hook portion 33a is detached from the striker 31, the seat bottom 18 is slightly lifted by its elasticity, the engagement step portion 33d is engaged with the engagement claw 35b of the engagement lever 35, and the foot lever 33 is engaged with the striker. automatically held in the release position.

Therefore, in this state, you must manually move the foot lever 3.
3 in the striker disengaged position, the seat bottom 18 can be immediately flipped up.

As is clear from the above explanation, the present invention
Since the seat bottom lever is held in the striker engagement release position by the engaging lever when the seat bottom lever is released, the seat bottom can be flipped up easily and quickly.

In addition, since the locking of the hook lever by the engagement lever is released when the engagement lever comes into contact with the striker, self-locking can be achieved, and
A sufficient depth of engagement of the foot lever with the striker can be ensured, making the engagement more reliable.

[Brief explanation of the drawing]

Fig. 1a is a perspective view of a conventional seat device equipped with a locking mechanism, Fig. 1b is a side view of the locking mechanism of Fig. 1a, and Fig. 2a is a side view of the cabin of a cab-over type automobile according to the present invention. , FIG. 2b is a perspective view of the seat device according to the present invention equipped with a locking mechanism, and FIG.
4 and 5 are exploded side views of the locking mechanism. DESCRIPTION OF SYMBOLS 11... Cab-over type automobile, 12... Floor panel, 12a... Engine inspection port, 13... Engine, 15... Cabin, 16... Engine cover, 1
7... Hinge metal fitting, 18... Seat bottom, 19... Seat bottom frame, 26... Seal rubber, 29
... Shutter lever mechanism, 30 ... Self-lock mechanism, 31 ... Striker, 33 ... Foot lever, 3
5... Engagement lever, 36... Coil spring.

Claims (1)

[Scope of Claim for Utility Model Registration] In a seat device for a cab-over type automobile in which an engine cover is provided on a floor panel located above the engine so as to be freely openable and closable, a seat bottom frame is attached to the engine cover, and a seat bottom frame is attached to the engine cover, and a seat bottom frame is attached to the seat bottom frame. A striker is provided on the floor panel of the vehicle, and a foot lever biased by a spring in the direction of engaging the striker and an engagement lever biased by a spring in the direction of contacting the striker are pivotally attached to the seat bottom frame. An engaging portion is formed on the foot lever, and a locking portion formed on the engaging lever is locked to the engaging portion. When the seat is locked, the engaging lever and the striker come into contact with each other to engage the engaging portion. a self-locking position in which the striker is held between the foot lever and the engaging lever when the striker is released, and a full-locking position in which the striker is locked in a fitting portion at the back of the foot lever by rotation of the foot lever from the self-locking position. A seat device for a cab-over type automobile, characterized in that a position can be obtained.