Workbench

Abstract

To change a posture of a workbench to a ceiling-high posture and a ceiling-low posture by using a support in a vertically inverted state.SOLUTION: A workbench is provided with four supports 3 connected to each other and placed to form a square and a rectangular ceiling 5 having four support holes 4 to be fitted to the four supports 3. The support has a first stopper part 7 for, when the ceiling 5 is fitted to the support 3, stopping the same at a position of a short distance from one end of the support 3, and a second stopper part 8 for, when the column 3 is turned upside down and the ceiling 5 is fitted, stopping the same at a position of a longer distance than the position of the shorter distance from the other end of the support 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a workbench whose top height is adjustable. [Background technology]

[0002] Patent Document 1 describes a workbench that can provide two different working height levels. This workbench comprises a base with a support pillar at each of the four corners and the four supports connected by connecting members, and a footstool with legs inserted inside the four supports of the base so that they can freely expand and contract up and down, and is provided at the four corners of the step. Between the supports of the base and the legs of the footstool, there is a contraction means which enables the four legs to be inserted up to the bottom of the four supports in a first position in which the four legs of the footstool correspond to the four supports of the base, and an extension means which enables the bottom of the four legs to be held inserted in the tops of the corresponding four supports in a second position in which the footstool is detached upward from the base from the first position and rotated horizontally (Claim 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6617234 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technology, two working heights can be achieved by switching the platform between a first and a second position, but the base requires four posts and the step requires four legs, and the four legs of the platform must correspond to the four posts of the base and the lower parts of the four legs must be inserted and held in the upper parts of the corresponding four posts, resulting in a complex structure and making it difficult to make the posts strong.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a workbench that can solve the problems of the prior art. To provide a workbench capable of changing the height of the top surface by using a support pole upside down. [Means for solving the problem]

[0006] The specific means for solving the problems in the present invention comprises three or more pillars 3 connected to each other, a platform 5 having pillar holes 4 that fit into each of the pillars 3, and is characterized by having a first stopper portion 7 that stops the platform 5 at a short distance from one end of the pillar 3 when the platform 5 is fitted onto the pillar 3, and a second stopper portion 8 that stops the pillar 3 at a long distance from the other end of the pillar 3 when the pillar 3 is turned upside down and the platform 5 is fitted onto it. Effect of the Invention

[0007] According to the present invention, the height of the top plate 5 fitted to the support 3 can be made different from the height of the top plate 5 fitted to the support 3 after the support 3 is turned upside down. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view illustrating an embodiment of the present invention. [Diagram 2] This is a front view of the platform in a high position. [Diagram 3] This is an exploded side view of the platform in the high position. [Figure 4] This is a plan view of the platform in a high position. [Figure 5A] FIG. [Figure 5B] FIG. [Figure 6A] This is a plan view of the ceiling. [Figure 6B] This is a side view of the ceiling. [Figure 7] This is a front view of the platform in a low position. [Figure 8] This is an exploded side view of the platform in a low position. [Figure 9] This is a front view of a work platform with a low platform being added to a work platform with a high platform. [Figure 10]This is an exploded front view of a work platform with a low platform being added to a work platform with a high platform. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1, 9 and 10 show an embodiment in which a work platform 1 with a low platform position L is added to a work platform 1 with a high platform position H. In Figures 1 to 6, the workbench 1 in the high platform position H has two support pillars 3 fixed to both ends of a connecting rod 9, which cross in the middle and are rotatably connected via a vertical axis 10 to form four support pillars 3 connected to each other and arranged in a square, and a rectangular platform 5 is fitted onto these four support pillars 3.

[0010] Each of the pillars 3 is made of a pipe or solid rod, and has rubber or synthetic resin grounding members 13 attached to the upper and lower ends. Two arc-shaped metal pieces 16 are fixed to the middle of the upper and lower parts of each of the pillars 3 by rivets, welding, etc., forming a first stopper portion 7 at the upper end of the upper metal piece 16a in Fig. 1, and a second stopper portion 8 at the lower end of the lower metal piece 16b. It should be noted that the two arc-shaped metal pieces 16 may be replaced by one piece, and the first stopper portion 7 and the second stopper portion 8 may be formed by both ends of one metal piece 16 .

[0011] The connecting rod 9 is formed of a single strip 9a connecting two of the four pillars 3, and a long, thin rod 9b is used to sandwich the strip 9a from above and below connecting the other two, with both ends of the upper and lower long, thin rods 9b connected by connecting members 9c. The vertical axis 10 passes through the longitudinal center of the band plate 9a and the vertically elongated rods 9b, and the four supports 3 can be unfolded and folded from a square arrangement.

[0012] The elongated rod 9b is provided with a stopper 12 near the vertical axis 10. The stopper 12 is a metal plate with a V-shaped or L-shaped cross section, one side of the V-shape is fixed to the elongated rod 9b, and the other side of the V-shape can abut against the band plate 9a when the support columns are deployed. When the support columns are deployed and the stopper 12 abuts against the band plate 9a, the two connecting rods 9 (9a, 9b) are perpendicular to each other, and the four support columns 3 are deployed in a regular square.

[0013] The top plate 5 is formed by connecting the ends of two wide materials 5a with a narrow material 5b to form a square frame, and fixing a base plate 5c inside the square frame to form a square base. The wide materials 5a, narrow materials 5b and base plate 5c are made of square pipe material, square bar material, channel steel, etc. A pipe 14 passes through each of both ends of the wide material 5a in the vertical direction, and the inside of the pipe 14 forms a post hole 4 into which the post 3 fits.

[0014] The upper end of the pipe 14 is approximately flush with the upper surface of the wide material 5a, and the lower part protrudes downward from the wide material 5a so that it can abut against the first stopper portion 7 or the second stopper portion 8 when fitted into the support 3. The length of this pipe 14 is longer than the distance from one end of the support 3 to the first stopper portion 7, approximately twice as long, and the pipe 14 is long enough to fit over the lower end of the support 3 to be added from above when it fits over the upper part of the support 3 and abuts against the first stopper portion 7.

[0015] At least one (two in the embodiment) of the pipes 14 at the four corners of the top platform 5 is screwed with an anti-sway knob 15. This anti-sway knob 15 presses against the support 3 to which the pipe 14 is fitted, thereby preventing the top platform 5 from shaking. The workbench 1 is formed by two supports 3 fixed to both ends of a strip 9a and two supports 3 fixed to both ends of an elongated rod 9b, the strip 9a is inserted into the gap between the two elongated rods 9b to cross them, and a vertical shaft 10 passes through the intersection to connect them, and is assembled in the folded state shown in Figures 5A and 5B. When unfolded from this folded state and the four supports 3 are arranged in a square, the upper ends of the four supports 3 face the pipes 14 at the four corners of the top platform 5, and the support holes 4 at the four corners of the top platform 5 can fit into the supports 3.

[0016] In the lower diagram of Figure 1, and in Figures 2 and 3, the first stopper portion 7 of the support pillar 3 is higher than the second stopper portion 8, so that when the top platform 5 is fitted and the lower end of the pipe 14 abuts against the first stopper portion 7, the top platform 5 becomes higher than the upper end of the support pillar 3, and the workbench 1 is in the top platform high position H. In the upper view of FIG. 1, and in FIGS. 7 and 8, the support 3 is turned upside down, and the second stopper portion 8 is in contact with the first stopper portion. When the top platform 5 is fitted and the lower end of the pipe 14 abuts against the second stopper portion 8, the top platform 5 becomes lower than the upper end (the lower end before inversion) of the support column 3, and the workbench 1 becomes in the low top platform position L.

[0017] In the workbench 1 in the high platform position H, the lower half of the pipe 14 is fitted onto the upper end of the support 3, and the support hole 4 remains open in the upper half of the pipe 14, into which the lower end (upper end before inversion) of the support 3 of the workbench 1 in the low platform position L can be inserted (as shown in Figs. 1, 9, and 10). Also, the lower end of the support 3 of another workbench 1 in a high platform position H can be inserted into the support hole 4 of the workbench 1 in the high platform position H.

[0018] In other words, one workbench 1 can be changed to two different positions, a high platform position H and a low platform position L, which have different heights for the platform 5. If there are two workbenches 1, they can be stacked, allowing four different platform 5 heights to be set. The top plate 5 can be formed into a rectangle other than a regular square. In that case, the intersection angle of the two connecting rods 9 is set at the stop 12 so that the four supports 3 face the four support holes 4.

[0019] The top plate 5 may be triangular, pentagonal, hexagonal, etc., and a support hole 4 may be formed at each corner, a number of supports 3 may be erected facing each support hole 4, the supports may be connected to each other, and a first stopper portion 7 may be formed on each support 3 at a short distance from its upper end, and a second stopper portion 8 may be formed at a long distance from its lower end. In the above-described embodiment, the system has three or more pillars 3 connected to each other, and a top plate 5 having pillar holes 4 that fit into each of the pillars 3. It is provided with a first stopper portion 7 that stops the top plate 5 at a short distance from one end of the pillar 3 when the pillar 3 is fitted to the top plate 5, and a second stopper portion 8 that stops the pillar 3 at a long distance from the other end of the pillar 3 when the pillar 3 is turned upside down and the top plate 5 is fitted to it.

[0020] In the embodiment, the device has four columns 3 connected to each other and arranged in a square, and a rectangular top plate 5 having four column holes 4 that fit onto the four columns 3. The device has a first stopper portion 7 that stops the top plate 5 at a position a short distance from one end of the column 3 when the column 3 is fitted onto the top plate 5, and a second stopper portion 7 that stops the top plate 5 at a position a short distance from the other end of the column 3 when the column 3 is turned upside down and fitted onto the top plate 5. Long and a second stopper portion 8 that stops the roller at a short distance.

[0021] With this configuration, the height determined by the first stopper portion 7 of the platform 5 engaged with the four pillars 3 can be made different from the height determined by the second stopper portion 8 of the platform 5 engaged with the pillars 3 by inverting the pillars 3 upside down, thereby enabling the workbench 1 to be placed in a high platform position H or a low platform position L. In the embodiment, the four support pillars 3 are fixed to both ends of a connecting rod 9, and the two connecting rods 9 cross each other in the center and are rotatably connected via a vertical shaft 10.

[0022] With this configuration, the four supports 3 can be folded up when the top plate 5 is removed. In the embodiment, one of the two connecting rods 9 is provided with a stopper 12 that comes into contact with the other rod to set the intersecting angle between them. With this configuration, when the folded four support columns 3 are unfolded, the four support columns 3 can be properly positioned.

[0023] Furthermore, in the above embodiment, the first stopper portion 7 and the second stopper portion 8 are formed by fixing separate members to the support 3, or by fixing a single member having upper and lower ends to the support 3. With this configuration, the two stopper portions 7 and 8 can be easily configured. Furthermore, in the embodiment, the support 3 is provided with grounding members 13 at the top and bottom ends for grounding.

[0024] This configuration allows the upper and lower ends of the support pillar 3 to be well grounded. Furthermore, in the above embodiment, the ceiling 5 is fixed with a pipe 14, the inside of which becomes the support hole 4. The length of the pipe 14 is longer than the distance from one end of the support 3 to the first stopper portion 7 and is long enough to be fitted onto the end of the support 3 to be extended. With this configuration, further work tables 1 can be stacked on top of the work table 1 in the high platform position H.

[0025] Furthermore, in the above embodiment, at least one of the pipes 14 is provided with an anti-vibration knob 15 that presses against the fitted support 3 to prevent vibration. This configuration makes it possible to prevent the top platform 5 from swinging against the support 3. The present invention is not limited to the above-described embodiment, and the shape, configuration, and combination of the members can be changed.

[0026] For example, the platform 5 can be formed from a single polygonal plate, and if the workbenches 1 are not to be stacked, the pipes 14 can be omitted and only the post holes 4 need to be drilled. The two connecting rods 9 may each be made of a strip 9a instead of the elongated rod 9b. Also, the connecting rods 9 may be fixed to each other. [Explanation of symbols]

[0027] 1 Workbench 3 pillars 4 Post hole 5 Heaven 5a Wide material 5b Narrow width material 5c base plate 7 First stopper part 8 Second stopper part 9 Connecting rod 9a strip plate 9b bar material 9c Connecting material 10 Vertical axis 13 Grounding member 14 Pipes 15 Anti-sway knob 16 metal piece 16a Upper metal piece 16b Lower metal piece H High ceiling position L Low posture

Claims

1. This workbench has three or more mutually connected support pillars (3) and a platform (5) having support pillar holes (4) that fit into each of the support pillars (3), and is provided with a first stopper portion (7) that stops the platform (5) at a short distance from one end of the support pillars (3) when the platform (5) is fitted onto the support pillars (3), and a second stopper portion (8) that stops the platform (5) at a long distance from the other end of the support pillars (3) when the support pillars (3) are turned upside down and the platform (5) is fitted onto the support pillars (3).

2. A workbench having four support posts (3) connected to each other and arranged in a square, and a rectangular platform (5) having four support holes (4) that fit into the four support posts (3), and characterized in that it is provided with a first stopper portion (7) that stops the platform (5) at a position a short distance from one end of the support posts (3) when the platform (5) is fitted into the support posts (3), and a second stopper portion (8) that stops the support posts (3) at a position longer than the short distance from the other end of the support posts (3) when the support posts (3) are turned upside down and the platform (5) is fitted into the workbench.

3. The workbench according to claim 2, characterized in that the four support pillars (3) are arranged such that two support pillars (3) are fixed to both ends of a connecting rod (9) and the two connecting rods (9) cross in the center and are rotatably connected via a vertical axis (10).

4. 4. A workbench according to claim 3, characterized in that one of the two connecting rods (9) is provided with a stop (12) which abuts against the other rod to set an intersecting angle therebetween.

5. A workbench as described in any one of claims 1 to 4, characterized in that the first stopper portion (7) and the second stopper portion (8) are formed by fixing separate members to the support (3), or by fixing a single member having upper and lower ends to the support (3).

6. 6. The workbench according to claim 1, wherein the support (3) is provided with grounding members (13) at the upper and lower ends for grounding.

7. A workbench described in any one of claims 1 to 6, characterized in that the top plate (5) has a pipe (14) fixed thereto, the inside of which is a support hole (4), and the length of the pipe (14) is longer than the distance from one end of the support (3) to the first stopper portion (7) and is long enough to fit into the end of the additional support (3).

8. 8. The workbench according to claim 7, characterized in that at least one of the pipes (14) is provided with an anti-vibration knob (15) for pressing against the fitted support (3) to prevent vibration.

Images