JP2934943B2 - Mobile workbench - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable workbench.

[0002]

2. Description of the Related Art The applicant of the present invention has already filed Japanese Patent Application No. Hei.
No. 4497 is filed as an application, but this is a work table having a large-scale structure, which is moved by a self-propelled system, which is advantageous in a building having a large floor without partitions. However, it could not be used in narrow spaces such as houses and hospitals with many partitions and narrow floors, which was a drawback.

Therefore, conventionally, in a place where the door width is relatively narrow and the floor is narrow, a stepladder or a ladder is used to mount a ceiling plate, install an air conditioner, wire for telecommunications, attach a wall-covered ground, and attach a sash. Because of the construction work such as installation of the work, the fall of workers often occurred, and this was a problem in work-related accidents.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a mobile workbench which solves the problem in such a place.

[0005]

According to the present invention, a base having a threaded portion is provided in the center of a base provided with a moving wheel and a fixture, and the base is provided with an intermediate screw tube having an outer peripheral screw surface. At the same time, another intermediate screw tube is screwed into the screw portion inside this intermediate screw tube, a screw support shaft is screwed into the intermediate screw tube into which an arbitrary number of screws are inserted, and a workbench is installed at the upper end of the screw support shaft. A guide roll is provided on a mounting portion of a guide member provided on a rear side portion of the work table, and the guide roll portion can be housed in a support pipe provided on a rear side portion of the base and can slide vertically. In this way, the work table is moved up and down through the intermediate screw tubes and the screw shafts by the forward and reverse rotation operations of the motor.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION When starting work on a work table, the screw support shaft and the intermediate screw pipe supporting the work table are all accommodated in a base in the center of the base. First, it is moved to the desired place via the wheels in a state where it is put down with the handle on the pillar tube surface.

After the movement, in order to fix the worktable at the place, the entire base is slightly lifted by fixing jacks provided at the four corners of the base, and then fixed. At this time, the wheels also float.

Thereafter, the operator gets on the work table and operates the operation panel to turn on the forward rotation switch of the motor. Then
When the belt rotates and the screw support shaft first rotates via the pulley, the screw support shaft operates upward while spiraling the screw portion of the opening flange inside the upper intermediate screw tube, and the lower end stopper is opened. Stops when it contacts the inside of the collar. However, since the rotation of the motor continues, the upper intermediate screw pipe moves upward while spiraling the screw portion of the opening flange part inside the lower intermediate screw pipe, and the lower end stopper moves to the lower intermediate screw pipe. Stops when it comes into contact with the inside of the opening flange of

Then, the lower intermediate screw pipe moves upward inside the base body while spiraling the threaded portion of the opening flange, and stops when its lower end stopper comes in contact with the inside of the base opening flange.

As a result, the workbench is raised to a predetermined height, so that a desired work may be performed in such a state. The height of the worktable can be stopped at an arbitrary altitude by adjusting the spiral of the intermediate screw tube.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a base having a base tube 2, 2,... Around its periphery. Arms 3, 3 provided on a base tube 2 on the rear side of the base have wheels 4, 4 attached thereto. Pivot.

Reference numerals 5 and 5 denote adjusting tubes which are inserted into and removed from respective ends of the base tubes 2 and 2 on both front and rear sides of the base 1, and fixed to the respective adjusting tubes so as to be vertically adjustable. Jack 6,
6 ... is provided.

Reference numeral 7 denotes a support pipe having an opening 8 in the longitudinal direction in the vertical direction in the center of the rear side of the base 1, and a guide roll 3 provided on the rear surface of a guide member 35 described later in the support pipe.
7, 37 parts are inserted and slid up and down.

Reference numeral 9 denotes a handle provided at an appropriate position on the rear side of the support tube 7. The handle serves as a handle when the entire machine is moved backward through the wheels 4 and 4 in a state where the entire machine is turned backward. In this embodiment, the entire machine is moved backward while moving. However, if four wheels are provided, the entire machine is moved in a horizontal state.

Reference numeral 10 denotes a base provided at a central portion of the base 1. The base 10 has a space portion 11 inside and an upper portion provided with an opening 13 having a flange portion 12 formed therearound. A screw portion 14 is formed on the inner peripheral surface of the flange portion 12, and the outer peripheral thread portion of the first intermediate screw tube 15 is screwed into the screw portion 14. Operates up and down.

The inside of the intermediate screw tube 15 forms a space 16 and a stopper 17 protruding outward is provided around the lower end thereof. The stopper 17 is provided for the base 10.
When it comes into contact with the flange 12 around the opening 13, the upward operation stops.

The upper surface of the intermediate thread 15 is provided with an opening 19 having a flange 18 formed therearound. The collar 18
A screw portion 20 is formed on the inner peripheral surface of the intermediate screw tube 20, and an external thread portion of the next intermediate screw tube 21 is screwed into the screw portion 20.
1 vertically moves the space 16 of the intermediate screw tube 15.

The interior of the next intermediate thread 21 is also a space 22.
And a stopper 23 protruding outward is provided around the lower end portion. When the stopper 23 comes into contact with the flange 18 around the opening 19 of the intermediate threaded tube 15, the upward operation stops.

The upper surface of the intermediate screw tube 21 is provided with an opening 25 having a flange 24 formed therearound. A screw portion 26 is formed on the inner peripheral surface of the flange portion 24, and the screw portion 26
The next intermediate screw or screw support shaft 27 is screwed into the screw support shaft 2.
7 vertically moves the space 22 of the intermediate screw tube 21.

A stopper 2 is provided at the lower end of the screw shaft 27.
8 is provided, and when this comes into contact with the flange 24 of the opening 25 of the intermediate thread 21, the upward operation is stopped.

Reference numeral 29 denotes a pulley provided at the upper end of the screw shaft 27. A belt 31 is suspended between the pulley and the motor pulley 30. The pulleys and belts may replace sprockets with chains.

Reference numeral 32 denotes a work table which is installed above the screw shaft 27 with a predetermined support member 33 interposed therebetween, and has an appropriate area.

The motor 34 for rotating the belt 31 is
The work table 32 is provided between a part of the rear side portion and a guide member 35 provided at the center of the rear side portion.

Reference numeral 36 denotes a mounting portion provided on the front surface of the guide member 35. The mounting portion is provided with guide rolls 37 on both left and right sides and upper and lower portions thereof. The guide roll is housed inside the support tube 7, and slides the support tube up and down on a rail.

Reference numeral 38 denotes a handrail frame provided around the work table 32. An operation panel 39 for rotating the motor 34 in the forward and reverse directions is provided at the rear center of the handrail frame. A part of this handrail frame 38 is provided with an accessable frame rod 40 that can be opened and closed.

[0026]

According to the work table of the present invention, since it is a relatively small work table suitable for performing various works on a ceiling or a wall portion in a place with many partitions and a narrow door width, various work works can be performed. It is always safe, smooth and quick, can be easily moved, hardly accumulates fatigue, and its overall mechanism is relatively simple. can do.

[Brief description of the drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is a partially cutaway side view of a main part.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a perspective view of a main part.

[Explanation of symbols]

 Reference Signs List 1 base 4, 4 wheels 5, 5 adjusting pipe 6, 6 fixing jack 7 support pipe 9 handle 10 base body 12 flange section 13 opening section 14 screw section 15 intermediate screw pipe 17 stopper 18 flange section 19 opening section 20 screw section 21 intermediate Screw tube 23 Stopper 24 Flange 25 Opening 26 Screw 27 Screw shaft 28 Stopper 29 Pulley 30 Motor pulley 31 Timing belt 32 Workbench 35 Guide member 36 Mounting part 37, 37 Guide roll

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04G 1/20 E04G 1/24

Claims (1)

(57) [Claims] 1. A base having a threaded portion inside a base provided with a moving wheel and a fixture is provided, and the base is screwed into an intermediate screw tube serving as an outer thread surface, and the intermediate screw tube is provided. Another intermediate screw tube is screwed into the internal thread, a screw support shaft is screwed into the intermediate screw tube into which an arbitrary number of screws are inserted, and a worktable is installed at the upper end of the screw support shaft. A guide roll is provided in a mounting portion of a guide member provided in the portion, and this guide roll portion is accommodated in a support tube erected on the rear side of the base so that it can slide up and down, and forward and reverse rotation of the motor A movable workbench configured to move up and down the workbench via the intermediate screw pipes and the screw shafts by operation.