JPH0610032U - Slide structure for vehicle chairs - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a slide structure for a vehicle chair that is easy to assemble and contributes to weight reduction of the chair. Further, the present invention provides a slide structure for a vehicle chair in which the load on the moving frame side can be evenly distributed over a relatively wide area. [Structure] The fixed underframe 1 and the movable underframe 2 are made of aluminum alloy mold members 3, 4, 6, and 7, respectively. The fitting groove 11 formed on the upper side of the fixed underframe 1 side aluminum alloy mold material 3 and the hollow ridge 12 formed under the movable underframe 2 side aluminum alloy mold material 6 are fitted with the lubricating member 13 interposed therebetween. is there.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slide structure for a chair installed on a vehicle such as a bus.

[0002]

[Prior art]

 Conventionally, a sliding structure for allowing a seat of a chair installed on a bus or other vehicle to be slid (mainly, but not limited to the traveling direction of the vehicle in many cases) is fixed on the floor of the vehicle. A movable underframe with seats is slidably supported on a fixed underframe. It is also known that the seat is rotatable on a moving frame.

The fixed underframe and the movable underframe are assembled by rivets and welding of constituent members such as steel forming plate members, respectively, and a supporting portion for making them slidable is shown in FIG. As described above, the steel slide guide A installed on the fixed underframe side and the steel slide member B installed on the moving underframe side are fitted, and a large number of metal balls C and rollers D are fitted in the fitting gap. It had an intervening structure.

[0004]

[Problems to be solved by the device]

 As described above, since the conventional fixed frame and movable frame of the vehicle chair are made of steel and assembled by rivets or welding, not only do many man-hours are required for the assembly, There is a problem that it is difficult to reduce the weight of the chair.

In particular, the supporting portion for making the slide movable is a complicated structure in which a large number of metal balls and rollers are mounted in addition to the fitting of the slide guide and the sliding member, which is difficult to assemble and the moving table is movable. As a result of the load on the frame side being concentrated on the metal balls and rollers, there were cases where smooth sliding performance could not be maintained for a long period of time.

[0006]

The present invention has been made in view of the above problems, and provides a slide structure for a vehicle chair that is easy to assemble and contributes to weight reduction of the chair. It is an object.

Another object of the present invention is to provide a slide structure for a vehicle chair in which the load on the moving underframe side can be evenly distributed over a relatively wide area.

The present invention that achieves such an object is a sliding structure of a vehicle chair in which a movable underframe is slidably supported on a fixed underframe, and the fixed underframe and the movable underframe are respectively It is made of aluminum alloy material, and the fitting groove formed along the longitudinal direction on the upper side of the fixed underframe side aluminum alloy mold material and the lower side of the moving underframe side aluminum alloy mold material in the longitudinal direction. The sliding structure of a vehicle chair is characterized in that a ridge formed along the ridge is fitted with a lubricating member interposed therebetween.

It is desirable that the fitting groove and the protrusion have a cross section of a circular shape, an elliptical shape, a rectangular shape, or the like so that the fitting groove can be fitted only in the longitudinal direction.

As the lubricating member, a member made of wear-resistant resin such as ultra-high molecular weight polyethylene, fluororesin, polyacetal or the like can be used.

[0011]

[Action]

 According to the sliding structure of the vehicle chair of the present invention, the fixed underframe and the movable underframe are made of aluminum alloy, respectively, so that it is possible to extrude a plurality of members as an integrated body and reduce the number of assembling steps. In addition to being able to reduce the weight, it is possible to reduce the weight.

In addition, the structure in which the movable underframe is slidably supported on the fixed underframe is a structure in which the protrusions are fitted in the fitting grooves with the lubrication member interposed, and the load on the moving underframe side is wide. Since it is evenly distributed, smooth slide performance can be obtained and the performance can be maintained for a relatively long period of time.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sliding structure portion of a vehicle chair according to an embodiment, in which 1 is a fixed underframe and 2 is a movable underframe.

The fixed underframe 1 was assembled in a flat rectangular shape with two aluminum alloy mold members 3 and 3 parallel to each other and an end cap 4 made of an aluminum alloy mold member having a U-shaped cross section. A fixing piece 5 is provided outside the mold members 3 and 3 so that it can be fixed to the floor surface.

The moving frame 2 is substantially the same as that of the movable frame 2, which is assembled in a planar rectangular shape with the aluminum alloy mold members 6 and 6 and the aluminum alloy end cap 7 having a U-shaped cross section. The rectangular protrusions 8 formed on the outer side wall of the mold 6 are fitted in the concave grooves 10 of the guide plate 9 provided upright on the fixed underframe 1 side, and extend along the longitudinal direction of the mold members 6, 6, 3, and 3. The movement will be guided.

On the upper side of the mold members 3 and 3, a fitting groove 11 having a circular cross section with an open upper portion is provided along the longitudinal direction of the mold members, while on the lower side of the mold members 6 and 6, the fitting member is formed. Corresponding to the mounting groove 11, a hollow ridge 12 having a circular cross section is provided along the longitudinal direction of the mold material, and the fitting groove 11 and the hollow ridge 12 are fitted to each other, and In the gap between the inner wall of the fitting groove 11 and the outer wall of the hollow ridge 12, a lubrication member 13 made of a wear-resistant resin and having a shape obtained by cutting one side wall of the cylindrical body is interposed.

Reference numeral 14 in the drawing denotes a stopper that is rotatable about a shaft 15 as shown by an arrow 16, and a pin 17 of the stopper 14 is provided on a side wall of the fitting groove 11 along a longitudinal direction. , Is designed to be inserted and locked in the engaging holes 18 formed at predetermined intervals.

According to the above-mentioned embodiment, since the fixed underframe 1 and the movable underframe 2 are made of aluminum alloy mold materials, they should be attached to each underframe such as the fitting groove 11 and the hollow ridge 12. The members can be manufactured simultaneously as an integral structure during extrusion. Therefore, each underframe can be assembled only by assembling the mold members 3, 6 and the end caps 4, 7. This simplifies the assembly and reduces the man-hours required for the assembly. Further, since the aluminum alloy mold material is a main constituent member, it is possible to reduce the weight of the vehicle chair.

When the stopper 14 is rotated to release the engagement between the pin 17 and the engagement hole 18, the moving underframe 2 is placed on the fixed underframe 1 in the longitudinal direction of the mold members 3 and 6 (in the plane of FIG. 1). Can be slid along.

The load on the moving underframe 2 side is evenly distributed on the entire surface of the substantially lower semicircular portion of the hollow ridge 12, and through the lubrication member 13, the fitting groove 11 side on the fixed underframe 1 side. Be transmitted to. That is, since there is no portion where the load concentrates, not only can the hollow ridge 12 slide smoothly, but since local stress does not act on the lubricating member 13, there is no such uneven wear and sliding performance. Maintenance can be carried out for a relatively long period of time.

FIG. 2 shows another embodiment of the fitting groove 11 and the hollow ridge 12. As shown in FIG. 2A, the fitting groove 11a and the hollow ridge 12a are elliptical in cross section, or (b) It is also possible to form the fitting groove 11b and the hollow ridge 12b having a triangular cross section as shown in) or the fitting groove 11c and the hollow ridge 12c having a rectangular cross section as shown in (c). Including the above-described embodiment, the hollow ridges 12, 12a, ... Can be fitted only in the longitudinal direction with respect to the fitting grooves 11, 11a ,. It is desirable not to. The hollow ridges 12, 12a, ... May not be hollow and may be solid ridges.

[0023]

[Effect of device]

 As described above, according to this invention, there is an effect that it is possible to provide a slide structure for a vehicle chair that is easy to assemble and contributes to weight reduction of the chair.

Further, since the load on the moving underframe side is evenly distributed with respect to the fixed underframe side, the moving underframe can be slid smoothly and smooth sliding performance can be maintained for a relatively long period of time. effective.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

2 (a), (b) and (c) are sectional views of a fitting groove and a hollow ridge according to another embodiment of the present invention.

FIG. 3 is a sectional view of a portion of a conventional slide guide and a slide member.

[Explanation of symbols]

 1 Fixed Underframe 2 Moving Underframe 3, 6 Mold Material 4, 7 End Cap 11 Fitting Groove 12 Hollow Protrusion 13 Lubricating Member

Claims (2)

[Scope of utility model registration request] 1. In a sliding structure of a vehicle chair in which a movable underframe is slidably supported on a fixed underframe, the fixed underframe and the movable underframe are each made of an aluminum alloy mold material. A fitting groove formed along the longitudinal direction on the upper side of the fixed underframe side aluminum alloy mold material, and a ridge formed along the longitudinal direction on the lower side of the movable underframe side aluminum alloy mold material A sliding structure for a vehicle chair characterized by being fitted with a pinch in between. 2. The fitting groove and the protrusion are circular in section, oval,
The slide structure for a vehicle chair according to claim 1, wherein the slide structure has a rectangular shape and can be fitted only in the longitudinal direction.