JPH0596981A - Seat fixing device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a movable seat that can be quickly and reliably fixed and unfixed in a seat fixing device in which a seat is attached to and detached from a mounting surface on a vehicle body side. The purpose is to provide a fixing device. According to the present invention, as shown in FIG. 1, a semicircular taper-shaped engaging concave portion 4 which is opened on a side orthogonal or parallel to an axle.
0 on the bottom surface side of the seat, and on the other hand, an engaging convex portion 45 that is swingable in a direction of coming into contact with and separating from the opening of the engaging concave portion 40.
And the fitting portions 50 and 55 are fixed to the bottom surface side and the mounting surface side of the seat portion 2 so that they can face each other, and the fitting portion is provided by installing the seat portion 2 on the mounting surface side. Fifty, five
After the position of 5 is regulated in a direction orthogonal to or parallel to the axle, the engaging convex portion 45 is swung to the engaging concave portion 40 side to fix the seat portion 2 to the vehicle body 1 side. ..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat fixing device which is arranged so as to be able to come into contact with and separate from a floor on the side of a vehicle body.

[0002]

2. Description of the Related Art Conventionally, trucks, dump trucks,
Work vehicles such as tank trucks and trailers are becoming larger year by year, and the seating position tends to be higher. However, the seat on which the occupant is seated is only considered for the sitting posture in which the driver drives and works for a long time, and the passenger can get in and out of the passenger compartment.
Only consideration has been given to the provision of a boarding / alighting equipment such as steps and grips. On the other hand, even if there is a passenger, not only a healthy driver but also a female driver, an elderly person and a physically handicapped person will be involved, and not only is it inconvenient only with the above-mentioned equipment, but sometimes It has also come to be seen when we need the help of others.

From this point of view, the actual Kaihei 1-141141
Japanese Patent Laid-Open Publication No. 2004-242242 discloses a vehicle entry / exit device. That is, according to this conventional technique, the seat body 2 is moved to the outside of the vehicle by the link mechanism shown in FIG. 1 of the publication, and the seat body 2 is moved up and down by the swing hydraulic cylinder 7 and the vertical movement hydraulic cylinder 8. The technology is disclosed. Moreover, since the link mechanism is composed of a pair of link members 6a and 6b which are arranged substantially parallel to each other and have substantially the same arm length, the seat seating surface is always kept horizontal. According to the above-mentioned conventional technique, by appropriately setting the length of the arm of the link member, it is possible to easily get on and off the vehicle in a sitting posture even in a large vehicle having a sitting position higher than the ground surface.

[0004]

However, when the seat is configured to be detachable from the mounting surface on the vehicle body side as described above, unless the fixing means for securely fixing the seat is provided, vibration and acceleration during traveling of the vehicle, and The seat is disengaged or slightly moved due to an impact at the time of a collision, which is not preferable. On the contrary, if the fixing method is too complicated, it becomes difficult to easily engage and disengage the fixed state in a short time so that the seat can be quickly brought into and out of contact when getting on and off.

In view of the drawbacks of the prior art, the present invention has been made.
An object of the present invention is to provide a movable seat fixing device capable of quickly and reliably fixing and releasing the seat in a seat fixing device arranged such that a seat can be attached to and detached from a mounting surface on a vehicle body side.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a seat fixing device in which a seat can be brought into and out of contact with a mounting surface on the vehicle body side, as shown in FIG. A semicircular tapered engagement recess 40 is provided on the bottom surface side of the seat, and an engagement projection 45 that can be swung in the direction toward and away from the opening of the engagement recess 40 is provided on the vehicle body 1 side. In addition, the fitting portions 50 and 55 are fixedly mounted on the bottom surface side and the mounting surface side of the seat portion 2 so that they can face each other, and the fitting portions 50 and 55 are mounted on the axle by mounting the seat portion 2 on the mounting surface side. After the position is regulated in the direction orthogonal to or parallel to, the engaging convex portion 45 is swung to the engaging concave portion 40 side to fix the seat portion 2 to the vehicle body 1 side. ..

In this case, when the seat portion 1 is disengaged, the engagement convex portion 45 on the vehicle body 1 side is simply swung in a direction away from the engagement concave portion 40 to disengage the both. In this state, it is possible to easily move the seat to a predetermined position by raising the seat unit 2 using the seat lifting mechanism 3. The swinging includes not only linear reciprocating movement but also arcuate curved movement. Further, these swinging means are hydraulic cylinders or motor drive devices, and further rack /
A pinion mechanism may also be included and other means may be used. Further, the fitting portions 50 and 55 are linear V in this embodiment.
The groove and the V protrusion are formed, but the invention is not limited thereto.

[0008]

According to such technical means, first, the seat portion 2 is lowered by using the seat lifting mechanism 3 and the seat portion 2 is installed on the mounting surface in the vehicle.
Are engaged with each other to regulate the position in a direction orthogonal (parallel) to the axle, and subsequently, toward the side of the vehicle body facing toward the side of the engagement recess 40 having a semi-circular taper opening that is orthogonal (parallel) to the axle. By simply swinging the engaging convex portion 45, it is possible to regulate the position not only in the direction parallel (orthogonal) to the axle but also in the vertical direction, whereby a simple operation of swinging the engaging convex portion 45 on the vehicle body side. The seat can be securely fixed to the mounting surface.

Further, the engaging projection 45 on the vehicle body 1 side is replaced with the engaging recess 40.
Since the engagement of the seat portion 1 can be released only by swinging the seat portion 1 away from, the seat attaching / detaching operation is extremely simplified. Also, mechanically, the pair of fitting parts 50, 55
Since it is sufficient to provide the engaging concave portion 40 and the engaging convex portion 45 respectively on the vehicle body side and the vehicle side, the configuration is simplified.

Further, the fitting portions 50 and 55 are formed with V protrusions and V
By using the groove, even if a slight deviation occurs when the seat is installed, the V groove can be used as a guide to accurately control the position, and the impact when fixing can be reduced. Further, since the engagement between the engagement concave portion 40 and the convex portion is tapered, it is possible to easily disperse the load against a large load and impact, and it is possible to reduce the vertical operation space of the fixing device. it can. Furthermore, since the fitting portions 50, 55 and the engaging portion are V-groove or semi-circular taper coupling, they can be engaged with each other centripetally, and even if the V-groove or tapered surface is worn, it can be used for a long time. It is possible to maintain positional accuracy and reliability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described in detail below as an example with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Not too much. Figure 1
1 is an exploded perspective view of a main part showing a configuration of a seat moving mechanism including a seat fixing device according to an embodiment of the present invention, FIG. 3 is a front view showing a relationship with a vehicle, and of a cab 10 having a passenger seat space of the vehicle 1. A slide door 11 that can be opened and closed in parallel with the traveling direction is provided on the side surface. The seat portion 2 includes a seat 12 and a mounting base 13 on which the seat is mounted.
Is the floor 4 on the cab 10 side through the seat fixing device 4.
It is arranged so that it can be connected to and separated from zero.

A seat lifting mechanism 3 is swingably disposed by a hydraulic cylinder 31 in a space sandwiched between a cylinder holder 30 fixedly mounted on a floor 40 and a pair of standing plates of the cylinder holder. Two parallel links 20, 21,
The cylinder stay 22 is configured to move the seat portion in an arc by the two parallel links 20 and 21. On the other hand, the lower end of the seat stay 22 is fixedly provided along the rear surface of the seat 12 on the rear side of the seat mount 13 on the door side. Further, between the cylinder holder 30 and the upper end of the seat stay 22, as described above, the two parallel links 20 and 21 in which the distances between the rotation fulcrums at both ends are set to be substantially the same,
Engagement devices are rotatably provided substantially parallel to each other.

A cylinder rod of a return hydraulic cylinder 31 is rotatably connected to a lower extension end of the parallel link 20.
By pressing the rear surface to expand and contract the cylinder rod, the seat 12 can be moved in and out of the vehicle in a substantially arcuate shape while maintaining a seated posture substantially parallel to the ground.

Reference numeral 14 is a foot seat fixed to the seat 12,
Left and right pedal switches 85 and 86 for confirming the stepped foot are mounted on the foot seat 14. Also, 80 is the sheet 12
The lift switch is provided on the armrest 16 on the floor side of the vehicle center, which is provided integrally with the seat 12. Further, a three-point type seat belt 18 is incorporated in the seat 12, and a seat belt support 19 is provided through a seat belt fitting.
It can be attached to and detached from.

A handbrake 42 and a select bar 43 for an automatic transmission are provided on the center floor of the driver's seat. Further, a steering wheel (not shown) can also be manually tilted or automatically tilted and bent backward by an actuator.

Next, the seat fixing device 4, which is a main part of the present invention, will be described with reference to the side views of FIGS. A horizontal fixing plate 131 is integrally provided with the mounting base 13 on the bottom surface side of the seat mounting base 13 in parallel with the bottom surface through a predetermined space, and a hole 132 opened at the center of the horizontal fixing plate 131 is provided. The central edge is bulged rearward in a semicircular shape, and the engaging recessed member 40 is fixed by the screw 43 along the bulging opening 132a. The engaging recessed material 40 has a bulge opening 13
It is composed of a plate-like member having a semicircular tapered surface 41 facing upward and facing the 2a, and the upper edge semicircular shape of the tapered surface 41 coincides with the bulging opening 132a.

A pair of V projections 50 extending in parallel along the axial direction are provided on the lower surface of the horizontal fixing plate 131 so as to project downward. On the other hand, a fixed plate 51 having a pair of V grooves 55 on the passenger compartment floor facing the V projection 50.
Is fixed. The V-shaped groove 55 is projected at a position where the V-shaped groove 50 and the V-shaped projection 50 are fitted to each other, and a rubber-like annular member 56 for absorbing the vibration of the vehicle body is attached to the concave surface of the V-shaped groove 55. Further, the fixed plate 51 sandwiched between the pair of V grooves 55.
An elongated hole 52 extending in a direction orthogonal to the axle is opened at a location facing the bulging opening 132a in the central portion, and an engaging convex member is provided on the bulging opening 132a side through the elongated hole 52. 45 is installed vertically.

The engaging convex member 45 comprises a tapered portion 46 whose lower surface is formed into a circular tapered surface 46a and a shaft member 48 which hangs along the central axis direction of the tapered portion 46, and the lower end of the shaft member 48. Is connected to a reciprocating means 47 such as a hydraulic cylinder or the like so as to be horizontally reciprocable in the front-rear direction.

Next, the operation of this embodiment will be described. First, by the seat lifting mechanism 3, the seat portion is carried into the vehicle compartment in a state where the seat portion is maintained substantially horizontal, and the bottom surface side of the seat mounting base 13 is installed on the fixing plate 51 provided on the vehicle compartment floor 40. First, the V protrusion 50 is provided on the fixed plate 51 with the V
Both are fitted while being guided by the groove 55. As a result, since the V groove 55 and the V protrusions 50, 55 are arranged in parallel with the axle, the movement in the direction (front-back direction) orthogonal to the axle is restricted, and the upper surface of the taper portion 46 of the engaging projection member 45 is restricted. The seat portion 2 is installed at a position substantially flush with the horizontal fixing plate 131 on the side of the bulging seat mounting base 13.

Subsequently, the reciprocating means is moved forward to move the tapered portion of the engaging convex member 45 to the engaging concave member 40 side to engage the tapered portion 46 while being guided by the semicircular tapered surface 41. As a result, the vertical position is regulated together with the direction parallel to the axle (the left-right direction), and the V groove 5
5 and the V projection 50 restrict movement in the direction orthogonal to the axle, and the engagement of the tapered portion 46 with the semi-circular taper surface 41 regulates the position in the direction parallel to the axle and in the vertical direction. Is completely fixed to the passenger compartment floor 40 side.

On the other hand, when the seat portion 2 is disengaged, the reciprocating means 47 is moved back to engage the engaging convex member 45.
Of the semi-circular tapered surface 41 on the side of the engaging recessed material 40.
Since the engagement of the seat portion 1 can be released only by further detaching it, the seat attaching / detaching operation is extremely simplified. Then, in this state, the seat portion 46 is lifted through the seat lifting mechanism 3 so that the seat portion 46 is easily carried out of the vehicle in a substantially circular arc.

In this embodiment, the V protrusion 5
0 to the seat mount 13 side, and the V groove 55 to the passenger compartment floor 40
Although it is arranged on the side, on the contrary, the V protrusion 50 is provided on the passenger compartment floor 40 side,
The V groove 55 may be arranged on the side of the seat mounting base 13. In this case, dust and foreign matter are rarely deposited on the V groove 55,
preferable.

[0023]

As described above, according to the present invention, after the seat portion is lowered and the seat portion is installed on the mounting surface in the vehicle, the engagement convex portion on the vehicle body side is swayed toward the engagement concave portion side having the semicircular taper shape. Only by moving the seat, it is possible to regulate the position not only in the direction parallel (orthogonal) to the axle but also in the vertical direction. This allows the seat to be securely attached to the mounting surface by a simple operation of swinging the engaging convex part on the vehicle body side. It can be fixed. In addition, the engaging projection on the vehicle body side is replaced by the engaging recess 4
Since the engagement of the seat portion can be released only by swinging the seat portion away from 0, the seat attaching / detaching operation is extremely simplified. Further, mechanically, it is sufficient to provide the pair of fitting portions and the engaging concave portions / engaging convex portions on the vehicle body side and the vehicle side, respectively, so that the configuration is simplified. And so on.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing a configuration of a seat moving mechanism in which a seat fixing device according to an embodiment of the present invention is incorporated.

FIG. 2 is an enlarged cross-sectional view of a main part of the seat fixing device of FIG.

3 is an overall front view of the seat moving mechanism of FIG.

[Explanation of symbols]

 12 seat 40 engaging concave portion 45 engaging convex portion 46 swinging means 50, 55 fitting portion

Claims (1)

[Claims] 1. A seat fixing device in which a seat portion is arranged so as to be able to come into contact with and separate from a mounting surface on the vehicle body side, and a semi-circular tapered engagement concave portion that opens to a side orthogonal or parallel to an axle is provided in the seat portion. On the bottom surface side, on the other hand, the engaging convex portions that can be swung in the direction of coming into contact with and separating from the opening of the engaging concave portion are provided on the vehicle body side, respectively, and are fitted to the seat portion bottom surface side and the mounting surface side, respectively. The parts are fixed so that they can face each other, and the both fitting parts are automatically fitted by installing the seat part on the mounting surface side, and after performing position regulation in a direction orthogonal or parallel to the axle, A seat fixing device characterized in that the engaging convex portion is swung to the engaging concave portion side so that the seat portion can be fixed to the vehicle body side.