JPH0629524U - Service vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a service vehicle that is used both as a chair and as a wheelchair for long-distance travel, and an object thereof is to realize a service vehicle in which large wheels can be easily attached and detached. To do. [Structure] Reference numeral 9 denotes a pillar, an abutment portion 9a for fitting the backrest portion 2 and the side pillar 10 of the frame 1 on an upper portion, a bearing portion 9b for rotatably rotatably supporting a large wheel 11 in front of the pillar in the central portion, and a lower pillar. On the rear side, a hook portion 9c is provided, one end of which fits into the rotation receiving portion. A hole 9d is formed just below the column of the hanging portion 9c, and is fitted with a protrusion 8b protruding from the leg portion 5 to enhance the attachment strength of the large wheel 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a service vehicle which is used both as an ordinary chair and as a wheelchair for long-distance transportation.

[0002]

[Prior art]

 Normally, when working facing a desk, small casters are provided on the ground contact surface of the legs of the chair to improve workability and improve usability. On the other hand, long-distance travel assistance vehicles are equipped with large wheels on both sides of the seat to further improve mobility.

[0003]

[Problems to be solved by the device]

 However, these two, which have different purposes of use, are too large for a wheelchair when working at a desk, unnatural because the chair moves unnaturally, and when moving a long distance, a small caster chair is an obstacle. There was a drawback that it was difficult to move because it was hindered by.

The present invention is intended to solve the above problems, and an object thereof is to provide an easy-to-use assistance vehicle.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has a structure in which a large wheel can be attached and detached by fitting a column.

[0006]

[Action]

 According to the present invention, with the above-described structure, by fitting the column with the large wheels in the legs, when the large wheel comes into contact with the floor, the small caster floats, the mobility is increased, and the column with the large wheels is removed. By doing so, the work can be performed easily.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 is a frame of a service vehicle, which has a cantilever shape composed of a single tube that is integrated from the backrest portion 2 to the elbow rest portion 3 to the leg portion 5. The leg portion 5 has four small casters 6. Installed. Reference numeral 9 is a seating surface, and 8 is a rotation receiving portion provided on the leg portion 5. Reference numeral 9 denotes a support pillar according to the present invention, which includes a support portion 9a on which the backrest portion 2 of the frame 1 and the side pillar 10 are fitted, a bearing portion 9b which rotatably supports a large wheel 11 in front of the support pillar in the central portion, At the rear of the lower column, a hook 9c is provided, one end of which engages with the rotation receiving portion. A hole 9d is formed just below the column of the hanging portion 9c, and is fitted with a protrusion 8b protruding from the leg portion 5 to enhance the attachment strength of the large wheel 11. When mounted, the bearing portion 9b is located ahead of the rotation receiving portion 8a by the dimension a. The distance from the caster 6 to the bearing portion 9b is smaller than the radius of the large wheel 11 by b. Therefore, when the hook portion 9c is fitted to the rotation receiving portion 8a and is rotated forward, when the caster 6 is grounded in FIG. When LI is set, when the large wheels 11 are in contact with G. It becomes LII, and the caster 6 is lifted by the dimension b from the ground. Even if a person is sitting on the seat surface 7, the distance from the rotation receiving portion 8a to the contact portion 9a is much larger than the dimension a, so that this switching can be operated lightly. The contact portion 9a has a buckle 12 on its side surface, and is connected to the side pillar 10 when the support pillar 9 is upright. The buckle 12 of the present invention is attached and detached by the handle 12a, but other types of buckles may be used. The seat surface 7 is detachably connected to a belt 14 by a buckle 13. The belt 14 is wound around a winding cylinder 15, and the winding cylinder 15 is rotated by a handle 17 provided in a box 16 containing a worm gear to adjust the height of the seat surface 7.

[0008]

[Effect of device]

 As described above, the support vehicle having the small casters according to the present invention can be selectively used according to the application because the columns having the large wheels are detachable. Also, the operation can be carried out by floating the small caster by fitting the lower end of the column to the leg and rotating it, and it is possible to provide a highly practical service vehicle with good workability.

[Brief description of drawings]

FIG. 1 is a side view of a support vehicle according to an embodiment of the present invention with a support column attached thereto.

FIG. 2 is a perspective view of a service vehicle according to an embodiment of the present invention with a support column removed.

FIG. 3 is a side view for explaining the work of mounting the support column.

FIG. 4 is a partially enlarged view showing a fixed state of a backrest portion and a strut support portion.

FIG. 5 is a plan view of a hanging portion c of a service vehicle according to an embodiment of the present invention.

FIG. 6 is a partially enlarged side view of a rear portion of a leg portion 5 of a service vehicle according to an embodiment of the present invention.

FIG. 7 is a partially enlarged plan view of the rear portion of the leg portion 5 of the service vehicle according to the embodiment of the present invention.

[Explanation of symbols]

 1 Assistance vehicle frame 2 Backrest part 3 Elbow rest part 5 Leg part 6 Small caster 8a Rotation receiving part 9 Strut 9a Resting part 9b Bearing part 9c Hanging part 11 Large wheel 10 Side pillar 12 Buckle

Claims (1)

[Scope of utility model registration request] 1. An assisting vehicle having small casters attached to the four corners of a lower part of a chair, wherein columns having bearings to which large wheels are attached and a rotation receiving portion at a lower end are detachably attached to both sides of a backrest from the rear. The bearing car is characterized in that the bearing part is located in front of the rotation receiving part at the time of mounting, and one of the small casters provided behind does not land.