JP3038161U - Workbench - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To enable continuous work without descending and moving the stepladder when working on the stepladder. SOLUTION: Wheels 7 and 8 for movement are provided at the lower end of the stepladder 1, and a brake device 17 is attached to the wheel 7. A handle 28 is provided on the upper side of the stepladder 1, and the handle 28 and the brake device 17 are connected by a connecting member 22. The wheels 7 and 8 and the brake device 17 are provided via the lower mount receiving portions 9 and 15 mounted on the lower ends of the leg rods 2 and 3. It is provided on the upper step rail 5A through the upper mount receiving portion 23 and the operating portion 21. While stepping up on the stepladder 1, the stepladder 1 can be moved by shaking the body, and after moving, the handle 28 is operated to brake the wheels 7. It is not necessary to move down from the stepladder 1 one by one, and the work can be continuously performed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a workbench such as a stepladder.

[0002]

[Problems to be solved by the device]

 Conventionally, when using a workbench such as a stepladder, for example, when attaching a ceiling plate in a construction work, etc., the work of climbing up the workbench such as a stepladder is performed, and then the work of descending the workbench is performed. They moved and climbed up to the workbench again to attach the ceiling boards. In addition, when washing a car using a workbench such as a stepladder, the car is washed up on the workbench, then descends from the workbench, moves to the workbench, and climbs up to the workbench again to perform car wash work.

As described above, in the work using a workbench such as a stepladder, the workbench has to be moved up and down each time the workbench is moved, which causes a problem that the work is complicated.

Therefore, an object of the present invention is to provide a workbench such as a stepladder which can be moved without going up and down. A further object of the present invention is to provide a workbench that can achieve the above object by retrofitting it to a workbench such as a general-purpose stepladder.

[0005]

[Means for Solving the Problems]

 According to a first aspect of the present invention, a wheel for movement is provided at a lower end of the workbench main body, a brake device is attached to the wheel, and a connecting member is provided between the brake device and an operation portion provided on an upper side of the workbench main body. The workbench is characterized by being provided with, and can be moved by wheels, and the wheels can be braked by a brake device.

According to a second aspect of the present invention, the workbench main body is a stepladder provided with a pair of leg rods provided with multi-stepped crosspieces on the left and right respectively, and a lock device is provided on the operation portion. The workbench according to Item 1 is excellent in stability because the leg rods are arranged on all sides, and the lock device can maintain the brake state of the wheels.

According to a third aspect of the present invention, the wheel and the brake device are provided via a lower mounting receiving portion attached to a lower end of the leg rod, and the operating portion is provided on an upper side of the leg rod via an upper mounting receiving portion. The workbench according to claim 2, wherein the wheel, the brake device, and the operation unit can be retrofitted to a general-purpose stepladder.

According to a fourth aspect of the present invention, in the brake device, a substantially center of a lever body provided with a tip thereof capable of coming into contact with the wheel is rotatably provided on a lower end side of the leg rod, and the coupling member is provided at a base end thereof. The operating portion including the locking device is provided with a handle rotatably provided on the upper side of the leg rod, and one end of a link is rotatably connected to substantially the center of the handle. The working table according to claim 2, wherein the other end of the link is connected to the upper end of the connecting member, and the stopper of the link is provided in the vicinity of the handle. The wheels can be braked with, and the link can be locked with the stopper as the handle rotates.

According to a fifth aspect of the present invention, the connecting member includes an upper rod connected to the operation portion side, a lower rod connected to the brake device side, and a female screw cylinder for screwing the upper rod and the lower rod together. The workbench according to any one of claims 1 to 4, wherein the connection member can be easily adjusted in length and exchanged.

[0010]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a general-purpose stepladder which is a main body of a workbench, and this stepladder 1 is provided with a pair of leg rods 2, 2A, 3, 3A on the left and right, respectively, and the upper part of these rod rods 2, 2A and leg rods 3, 3A. The connecting shaft 4 is connected so that the legs can be opened and closed, and the leg rods 2 and 2A and the leg rods 3 and 3A are provided with multi-steps 5 and 6, respectively. Wheels 7, 8 for movement are attached to the lower ends of the leg rods 2, 2A, 3, 3A. The wheels 7 attached to the lower ends of the rods 2 and 2A are attached to the lower ends of the rods 2 and 2A so that they can be moved in the front-back direction with respect to the rods 3 and 3A. The frame 10 of the wheel 7 is fixed to the wheel 9. The lower attachment receiving portion 9 has a bottom portion 11 and a main body 12 having a U-shaped cross section and a holding plate 13 located on the opening side of the main body 12, and the lower ends of the rods 2 and 2A are inserted into the main body 12. In this state, the pressing plate 13 is fixed to the main body 12 by an appropriate fixing means such as a bolt 14, so that the lower mounting receiving portion 9 can be fixed to the lower ends of the leg rods 2 and 2A by retrofitting. The lower attachment receiving portion 15 attached to the lower ends of the leg rods 3 and 3A is the same as the lower attachment receiving portion 9, and the frame 16 of the vehicle wheel 8 is provided on the bottom portion 11 so as to be rotatable in a caster-like manner.

The brake device 17 mounted on the wheel 7 has a lever body 18 whose tip 18 A can press the peripheral surface of the wheel 7, and the center of the lever body 18 is fixed to the lower mount receiving portion 9. A lower horizontal shaft 20 is rotatably attached to the lower part of the bracket 19. Then, the base end 18B of the lever 18 is rotatably connected to a lower end 22A of a connecting member 22 for connecting to an operation portion 21 which will be described later.

The operation portion 21 is attached via an upper attachment receiving portion 23 which is provided on the upper step rail 5A between the leg rods 2 and 2A and which can be attached later. The upper mount receiving portion 23 is a main body 24 that covers the upper surface, the inner side surface, and the outer side surface of the upper step rail 5A, and the main body 24 is attached to the upper step rail 5A so as to fit below the upper step rail 5A. It is composed of appropriate fixing means such as bolts 25 positioned so that the lower ends of the inner and outer surfaces of the main body 24 are connected to each other by the bolts 25 and the like so that the upper mount receiving portion 23 can be fixed to the upper step rail 5A by retrofitting. A horizontal rotation shaft 26 is rotatably provided inside the upper mounting receiving portion 23 via a bracket 27, and a base of a handle 28 for operation is provided at both ends of the rotation shaft 26 so as to be orthogonal to the rotation shaft 26. Connect the ends 28A respectively. Then, an upper end 30A that is one end of an L-shaped link 30 is rotatably connected between the base end 28A and the grip portion 29 of the handle 28, and an upper end of the connecting member 22 is connected to a lower end 30B that is the other end of the link 30. 22B is connected. Therefore, by connecting the upper end 22B of the connecting member 22 to the handle 28 via the link 30, as shown in FIG. 1, one of the grips 29 should be grasped and the handle 28 should be raised slightly outward. Thus, when the connecting member 22 is pulled up, the tip 18A of the lever body 18 presses against the circumferential surface of the wheel 7 to apply a brake, and at the same time, the inner bent portion 30C of the link 30 that constitutes the lock device 31 is located near the handle 28. The handle 28 is locked by being locked to the protruding end portion 26A of the rotary shaft 26 located at the position, and the brake state is maintained.

The connecting member 22 is formed by screwing a rod-shaped lower connecting member 32 on the lower end 22 A side and a rod-shaped upper connecting member 33 on the upper end 22 B side with a female screw cylinder 34. . Further, between the lower mounting receiving portions 9 and 15, there are rotatably provided open leg angle regulating rods 35 and 36 of the leg rods 2, 2A, 3 and 3A, respectively. The open leg angle regulating rods 35 and 36 are rotatably connected at their central portions by a shaft 37 so as to be bendable as shown by a chain double-dashed line in FIG. Further, a lower ring 38 is provided on the outer side of the spread leg angle regulating rod 36. In addition, a hanging rod 39 whose tip can be locked to the upper step bar 6A is rotatably provided substantially at the center of the rotary shaft 26, and an upper ring 40 facing outward is supported on the hanging rod 39. It is provided via 41.

Next, the operation of the above configuration will be described. In the assembly, the wheels 7, 8 and the brake device 17 are attached by fixing the lower attachment receiving portions 9, 15 to the lower end of the universal stepladder 1 which is the workbench main body, and the upper attachment receiving portion is attached to the upper step rail 5A. The operation part 21 is mounted by fixing the part 23. Then, the lower connecting member 32 is connected to the base end 18B of the lever 18, and the upper connecting member 33 is connected to the lower end 30B of the link 30. The length is adjusted by the female screw cylinder 34 to connect the lower and upper rods 32, 33. After the assembling in this way, for example, when the ceiling board A is attached, the leg rods 2, 2A, 3, 3A are connected to each other. The rods 34 and 35 are in a straight line shape and the open leg state is maintained. Further, the support rod B of the ceiling plate A is passed through the lower and upper rings 38 and 40 in advance, and the worker climbs up the steps 5 and 6 to mount the ceiling plate A. In this case, in order to prevent the stepladder 1 from moving, the grip portion 29 is grasped, the handle 28 is rotated, and the handle 28 is raised slightly outward so that the connecting member 22 is pulled up. Therefore, when the base end 18B of the lever body 18 rises, the tip end 18A presses the wheel 7, and the brake can be applied, so that the work can be performed with peace of mind. Next, when mounting the ceiling board A ', first grasp the grip 29 without turning down the stepladder 1 and rotate the handle 28 in the opposite direction (the direction of the arrow in FIGS. 1 and 6) so that it faces inward. And push down the connecting member 22. For this reason, when the base end 18B of the lever 18 descends, the tip 18A moves away from the wheel 7 and the brake can be released. When the body is shaken relatively strongly forward while climbing on the stepladder 1, the stepladder 1 is moved forward by the wheels 7 and 8. After moving the stepladder 1 to the desired position in this way, the handle 28 is operated again to brake the wheels 7 and perform the work. In this way, it is possible to repeat the steps of moving the stepladder 1 by moving the body without moving the brakes on the wheels 7 without going down from the stepladder 1 and then braking the wheels 7 to perform the work.

As described above, according to the embodiment of the present invention, the wheels 7 and 8 for movement are provided at the lower end of the stepladder 1 according to claim 1, so that the stepladder 1 is moved to a desired position by shaking the body. You can move without stepping down from stepladder 1. Further, the brake device 17 is attached to the wheel 7, and the connecting member 22 is provided between the brake device 17 and the operation portion 21 provided on the upper side of the stepladder 1, so that the operation can be performed in a state where the stepladder 1 is raised. Since the brake device 17 can be operated and the wheels 7 can be braked during operation by operating the portion 21, the stepladder 1 can be operated in a stable state.

Further, in the embodiment of the present invention, according to claim 2, the stepladder 1 is provided with a pair of leg rods 2, 2A, 3, 3A on each of which right and left are provided with multi-stepped crosspieces 5, 6. Since the leg rods 2, ... Can be arranged on all sides, the stability is good. Furthermore, by installing the lock device 31 on the operation part 21, it is possible to keep the brake state on the wheels 7 and use both hands. Can do work.

Further, in the embodiment of the present invention, in accordance with claim 3, a lower mounting receiving portion 9, in which the wheels 7, 8 and the brake device 17 are attached to the lower ends of the leg rods 2, 2A, 3, 3A, Since the operating portion 21 is provided on the upper side of the leg rods 2 and 2A via the upper mounting receiving portion 23, the lower mounting receiving portions 9 and 15 can be retrofitted to the general-purpose stepladder 1. The wheels 7 and 8 and the brake device 17 may be provided, and the operating portion 21 may be retrofitted via the upper mounting receiving portion 23. Therefore, it is possible to provide a stepladder that is movable and that can be brake-operated by using the stepladder 1 that is already in use or the general-purpose stepladder 1.

Further, in the embodiment of the present invention, according to claim 4, in the brake device 17, the lever body 2, 2A of which the tip 18A is provided so as to be capable of contacting the wheel 7 is provided at the substantially center thereof. The lower end 22A of the connecting member 22 is connected to the lower end side of the wheel and the base end 18B is connected to the base end 18B. By pulling up the connecting member 22, the front end 18A presses the wheel 7 to apply the brake accurately. be able to. Further, in the operation portion 21 provided with the lock device 31, a handle 28 is rotatably provided on an upper side of the leg rods 2 and 2A, and an upper end 30A of a link 30 is rotatably provided substantially in the center of the handle 28. The handle 28 is slightly rotated by connecting the upper end 22B of the connecting member 22 to the lower end 30B and providing the protruding end 26A near the handle 28, which is a stopper capable of locking the link 30. The handle 28 can be automatically set in a locked state by standing upright to the outside and engaging the link 30 with the protruding end portion 26A.

Further, in the embodiment of the present invention, according to claim 5, the connecting member 22 includes an upper rod 33 connected to the operation portion 21 side and a lower rod 32 connected to the brake device 17 side. Since the upper rod 33 and the lower rod 32 are screwed into the female screw cylinder 34, the female screw cylinder 34 can adjust the length and replace the rod.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but various modifications such as, for example, using a tripod as a work table are possible.

[0021]

[Effect of the invention]

 According to a first aspect of the present invention, a wheel for movement is provided at a lower end of the workbench main body, a brake device is attached to the wheel, and a connecting member is provided between the brake device and an operation portion provided on an upper side of the workbench main body. The workbench is characterized by the provision of a wheel, which allows the operator to move with the wheels without going down from the workbench, and the work can be done by braking the wheels without the operator going down. Therefore, each worker does not have to go down and move the work table, which improves work efficiency.

A second aspect of the present invention is a stepladder in which the workbench main body is provided with a pair of leg rods provided with multi-stepped crosspieces on the left and right respectively, and a lock device is provided on the operation portion. The workbench described in Item 1 has stability because leg rods are arranged on all sides, and since lock devices are provided, it is possible to perform work using both hands while standing on a stepladder.

According to a third aspect of the present invention, the wheel and the brake device are provided via a lower mounting receiving portion attached to a lower end of the leg rod, and the operating portion is provided on an upper side of the leg rod via an upper mounting receiving portion. The workbench according to claim 2, wherein the wheel, the brake device, and the operating portion can be attached to a general-purpose stepladder afterwards, so that the workstep can be performed without using the stepladder when in use. We can provide a workbench that can continue to the country.

According to a fourth aspect of the present invention, in the brake device, a substantially center of a lever body provided with a tip end thereof in contact with the wheel is rotatably provided on a lower end side of the leg rod, and the base portion is provided with the connecting member. The lower end of the lever is connected, and the tip of the lever can be pressed against the wheel for reliable braking. Further, in the operation portion provided with the locking device, a handle is rotatably provided on the upper side of the leg rod, one end of the link is rotatably connected to the substantially center of the handle, and the other end of the link is provided. By connecting the upper end of the connecting member and providing the stopper of the link in the vicinity of the handle, the link can be locked by the stopper and the handle can be rotated. It can be locked and unlocked more automatically and has excellent operability.

According to a fifth aspect of the present invention, the connecting member includes an upper rod connected to the operating portion side, a lower rod connected to the brake device side, and a female screw cylinder screwing the upper rod and the lower rod together. The workbench according to any one of claims 1 to 4, wherein the workbench can be replaced easily in addition to adjusting the length of the connecting member.

[Brief description of the drawings]

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

FIG. 2 is an overall perspective view showing an embodiment of the present invention.

FIG. 3 is a partially enlarged perspective view showing a lower end side of a stepladder showing an embodiment of the present invention.

FIG. 4 is a perspective view of a wheel and a brake device according to an embodiment of the present invention.

FIG. 5 is a perspective view around a wheel showing an embodiment of the present invention.

FIG. 6 is a sectional view of an operating portion showing an embodiment of the present invention.

[Explanation of symbols]

 1 Stepladder (workbench main body) 2, 2A, 3, 3A Leg rods 5, 6 Step bars 7, 8 Wheels 9 Lower mounting receiving part 15 Lower mounting receiving part 17 Brake device 18 Lever 18A Tip 18B Base end 21 Operating part 22 Connecting member 22A Lower end 22B Upper end 23 Upper mounting receiving part 26A Projecting end (stopper) 28 Handle 30 Link 30A Upper end (one end) 30B Lower end (other end) 31 Lock device 32 Lower rod 33 Upper rod 34 Female screw cylinder

Claims (5)

[Utility model registration claims] 1. A work wheel is provided at a lower end of a workbench main body, a brake device is attached to the wheel, and a connecting member is provided between the brake device and an operation portion provided on an upper side of the workbench main body. A workbench characterized by being provided. 2. The workbench main body is a stepladder provided with a pair of leg rods provided with multi-stepped crosspieces on the left and right, respectively, and a lock device is provided on the operation portion. Workbench. 3. The wheel and the brake device are provided via a lower mount receiving portion mounted on a lower end of the leg rod, and the operation portion is provided on an upper side of the leg rod via an upper mount receiving portion. The workbench according to claim 2, wherein: 4. The brake device includes a lever body, the tip of which is provided so as to be able to contact the wheel, so that a substantially central portion of the lever body is rotatably provided on a lower end side of the leg rod, and a lower end of the connecting member is connected to a base end thereof. In the operating portion provided with the locking device, a handle is rotatably provided on an upper side of the leg rod, and one end of the link is rotatably connected to substantially the center of the handle and the other of the link is connected. The workbench according to claim 2, wherein an upper end of the connecting member is connected to an end, and a stopper for the link is provided near the handle. 5. The connecting member includes an upper rod connected to the operation portion side, a lower rod connected to the brake device side,
The workbench according to any one of claims 1 to 4, comprising a female screw cylinder for screwing the upper rod and the lower rod together.