JPS642905Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a mobile workbench used when performing various construction works on buildings, etc.

It is common to use a movable workbench to perform simple work on the walls of buildings, etc., but conventional workbenches have auxiliary legs foldably pivoted to vertical columns on both sides of the main frame. Because the scaffolding board pivoted to the main frame has hooks on both sides for the horizontal beams of the auxiliary legs, the height of the scaffolding board cannot be changed, and it cannot be used on slopes or stepped locations. Because it cannot be used, the usable range is narrow and it is inconvenient that it cannot be used for other purposes.

This idea was made to solve the above-mentioned inconveniences, and it is a mobile work platform that can change the height of the scaffolding board, can be used on sloped or stepped areas, and can also be used as a ladder. The purpose is to provide.

The structure of this device consists of a pair of ladder frames, a frame attached between the vertical columns of both ladder frames, and a scaffolding board attached to the frame so as to be rotatable. The scaffolding boards are erected horizontally between the ladder frames by providing attachments on the crosspieces that are externally fixed to the vertical columns of the ladder frame, and hooking the hooks provided at both ends of the scaffolding boards to the rungs of the ladder frame. This is how it was done.

This invention will be explained below based on the embodiments shown in the accompanying drawings.

As shown in the figure, the mobile workbench has a pair of ladder frames 1, 1 on both sides, a frame 3 fixed between the vertical columns 2 of both ladder frames 1, 1, and a frame 3 that is rotatable. It consists of a scaffolding board 4 which is pivoted as shown in FIG. 7 is attached, and wheels 8 for transportation and a joint/grounding leg 9 are provided as accessories.

The ladder frames 1, 1 have vertical columns 2 on both sides connected by a plurality of rungs 6, and a cap 10 at one end of both vertical columns 2.
It is formed by fixing a ring body 11 for lifting, and the other ends of both vertical columns 2 are in an open state.

The frame body 3 is formed in the shape of a horizontally long rectangular frame as shown in FIG. Fixed on the front.

As shown in FIGS. 5 and 6, this fixture 5 is formed into a C-shape in plan, is externally fitted to the vertical column 2 so as to be movable in the vertical axis direction, and has one end attached to the vertical column. A fixing screw 12 is attached to press the frame 3 to the ladder frame 1, so that the fixing position of the frame 3 relative to the ladder frame 1 can be selected up or down.

In order to allow the frame 3 to move up and down without any trouble, the end of each step 6 is formed into a pressurized deformation part 6a that is flat on both sides so as to have a wide vertical width, so that the fixture 5 can be removed in the radial direction. It has become possible to move without having to do anything.

The scaffolding board 4 is formed by attaching a plate 14 between side rods 13 having a U-shaped cross section parallel to both sides,
The rear ends of both side rods 13 are both vertical bars 3a in the frame body 3
As shown in FIG. 5, the side beam 13 is pivotally fixed to the vertical beam 3a with bolts and nuts 15, and the scaffolding board 4 is rotatable around the bolts and nuts 15. .

A downward U-shaped hook 7 as shown in FIG. 7 is fixed to the outer surface of both side rods 13 of the scaffold board 4,
By hooking this hook 7 to the rung 6 of the ladder frame 1, the scaffold board 4 is installed horizontally between the ladder frames 1 on both sides, and both ladder frames 1, 1 are connected via the scaffold board 4. They are combined in a facing state, allowing stable independence.

Note that the material of each component may be aluminum or synthetic resin to reduce weight.

As shown in FIG. 7, lock members 17 are attached to both side bars 13 of the scaffold board 4 to prevent it from coming off the tread 6 when it is installed horizontally on the tread 6.

In the illustrated case, the locking member 17 is made of a leaf spring and is formed into a substantially U-shape that fits onto the side rod 13, and its lower part is screwed to the side rod 13, so that the upper part protrudes below the step 6. By engaging the protruding portion with the step 6, it is prevented from coming off, and by pushing in the upper part, it can be removed with a single touch.

The lock member 17 is not limited to the structure shown in the drawings; for example, a locking bolt may be threaded onto the hook 6.

The wheel 8 prepared as an accessory is equipped with a shaft 18 that is inserted into the lower end of the vertical column 2 in the ladder frame 1, and as shown in FIG. The workbench can be moved freely.

In addition, the joint/grounding leg 9 is constructed by fitting an adjusting tube 20 onto a shaft 19 inserted into the vertical column 2, and positioning holes 21 and screws 22 provided at regular intervals on the shaft 19, as shown in FIG. Therefore, the position of the adjustment tube 20 can be arbitrarily selected.

The workbench of this invention has the above configuration,
To use it as a workbench, insert the fixtures 5 of the frame 3 into the rear vertical columns 2 of the ladder frames 1 and 1 facing each other from the end, and slide the frame 3 to the desired height position. Then, by horizontally rotating the scaffolding board 4 that is pivoted to the frame 3 and hooking the hooks 7 on both sides to the treadles 6, the ladder frames 1 and 1 are connected by the frame 3 and the scaffolding board 4. It is assembled into a self-supporting state and can be placed on the scaffolding board 4 to perform work. (See Figures 1 to 3) In this case, by attaching the wheels 8 to the ladder frame 1 on one side and the grounding legs 9 on the other side of the ladder frame 1, and lifting the ladder frame 1 of the grounding legs 9, the ladder frame 1 can be moved freely. .

Also, the scaffolding board 4 with the hook 7 removed from the treadle 6 is suspended, and the ladder frames 1, 1 on both sides are rotated to the front side of the frame 3 around the vertical column 2 held by the fixture 5. If so, the frame 3 and the ladder frames 1 and 1 on both sides overlap,
It becomes flat and folded.

Furthermore, in order to use the ladder on a slope or in a stepped area, the position of the adjustment tube 20 on the ground leg 9 may be pulled up, and the ladder frame 1 may be lifted so that the scaffold board 4 is level.

If the difference in slope or step height is larger than the vertical pitch of the tread 6, as shown in Fig. 8, slide the ladder frame 1 located on the descending side downward, and lower the scaffolding board to the ladder frames 1 and 1 on both sides. By installing the scaffolding boards 4 at different levels and making fine adjustments using the grounding legs 9, the scaffolding board 4 can be kept horizontal and used stably.

In addition, the ladder frames 1 and 1 on both sides can be used as a ladder when separated from the frame 3, and if a long ladder is required, the open ends of both ladder frames 1 and 1 can be grounded as shown in Figure 9. Just connect with leg 9.

As described above, this invention has the above-described configuration, and therefore has the following effects.

(1) The scaffolding board is pivoted to the frame that is installed between the pair of ladder frames, and the scaffolding board has a hook that is hooked to the horizontal rung of the ladder frame, so the ladder frames on both sides are connected by the frame and the scaffolding board. It can be held and made to stand on its own, allowing a stable workbench to be assembled, and the height of the scaffolding board can be freely changed depending on the spacing between the treads.

(2) The ladder frames on both sides can be freely rotated around the frame attachments, and the scaffolding board of the frame can also be rotated, so it can be folded to a low volume in the assembled state.
Convenient for storage and transportation.

(3) Since the mounting position of the scaffolding board relative to the ladder frame on both sides can be arbitrarily selected, the scaffolding board can be used horizontally and stably even on sloped or stepped locations.

(4) Since the frame body and scaffolding board can be freely separated from both sides of the ladder frame, the ladder frame can be used as a ladder.

[Brief explanation of drawings]

Figure 1 is a front view of the workbench according to this invention, Figure 2
The figure is the same side view, and Figure 3 is the arrow in Figure 1.
4 is a perspective view of the same as seen from the back side, FIG. 5 is a cross-sectional plan view showing the relationship between the ladder frame, the frame body, and the scaffold board, and FIG. 6 is an exploded perspective view of the same.
Figure 7 is a longitudinal sectional view taken along the arrow - in Figure 2, Figure 8 is a front view showing the use of the workbench on a slope, Figure 9 is a front view showing the use as a ladder, and Figure 10 is FIG. 3 is a perspective view of a joint-cum-grounding leg. 1...Ladder frame, 2...Vertical column, 3...Frame body, 4...
...Scaffolding board, 5...Fixing tool, 6...Stile, 7...Hook, 8...Wheel, 9...Grounding leg.

Claims (1)

[Scope of utility model registration request] It consists of a pair of ladder frames, a frame body attached between the vertical columns of both ladder frames, and a scaffolding board that is rotatably fixed between the vertical bars on both sides of the frame body. A workbench that is equipped with attachments that fit onto the vertical pillars of the ladder frame, and hooks that hook onto the treads of the ladder frame at both ends of the scaffolding board.