Mobile device for folding workbench

Abstract

To provide a folding workbench which is rotatably pivoted between an unfolded posture in which legs are vertically installed from a top plate and a folded posture in which the legs are stored under the top plate, in particular, to provide a movement device that allows a workbench to run on a floor.SOLUTION: A folding workbench in which a first leg (5A) is a leading-folding leg and a second leg (5B) is a following-folding leg, is configured, by protruding wheels (28) of a caster device (26) laterally from a tip of the second leg (5B), so that the wheels (28) are allowed to run on a floor by simply lifting a predetermined part in both a work state in an unfolded posture (P1) and a non-work state in a folded posture (P2). Further, in order to allow the wheels (28) to run in the folded posture (P2), a handle device (29) is provided that facilitates lifting of a base end of the second leg (5B).SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a folding workbench pivotally connected so as to be rotatable between a deployed position in which legs are vertically provided from a top plate and a folded position stored under the top plate, and particularly to a moving device that enables the workbench to travel on a floor surface.

Background Art

[0002] Conventionally, when performing high-altitude work, a folding workbench is used in a state where the legs are in a deployed position and grounded on the floor surface (hereinafter referred to as "the state during work"), and when not working, the legs are in a folded position and stored (hereinafter referred to as "the state during non-work") to facilitate transportation and storage.

[0003] At this time, it is known to provide a caster device to enable the workbench in the state during work to travel on the floor surface (for example, Patent Document 1). According to this, when an operator moves the work location as the work progresses, it is convenient that the workbench can be traveled and moved while remaining in the state during work.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the case of the workbench proposed in Patent Document 1, the caster device is configured to switch between a non-operational position and an operational position by reversing. That is, with respect to the legs and crossbars of the workbench, the position facing inward is considered the non-operational position, and the position facing outward is considered the operational position. Therefore, when performing work at height with the workbench in operation, safety is ensured by keeping the caster device in the non-operational position.

[0006] However, switching the orientation of the caster system requires a switching mechanism, which increases costs, and the switching process itself is complicated.

[0007] In particular, while the ease of moving the workbench when it is in operation is taken into consideration, there is a lack of consideration for the ease of moving the workbench to a storage location or other place when it is not in use, i.e., when the legs are folded.

[0008] On the other hand, in the case of the workbench proposed in Patent Documents 2 and 3, a caster device is provided on the end edge of the top plate, thereby making the workbench movable when not in use.

[0009] However, the caster devices described in Patent Documents 2 and 3 are for use only when the workbench is not in operation. Therefore, in order to enable the workbench to move when it is in operation, as described in Patent Document 1, it is necessary to provide an additional caster device for that purpose.

[0010] In view of the above, the present invention aims to provide a foldable workbench that can be moved on the floor surface whether the workbench is in a working state or a non-working state, by providing a caster device on the legs, and to provide a configuration that allows the caster device to function effectively when moving the workbench in the non-working state. [Means for solving the problem]

[0011] Therefore, the means configured in the present invention is such that the base ends of the first leg and the second leg are pivotally connected to the vicinity of the opposing first and second end edges of the top plate, and both legs are pivotally connected so as to be able to rotate between an unfolded position where they are suspended downward from the top plate and a folded position where they are stored on the underside of the top plate, and the folding position is achieved by rotating the first leg so as to follow the underside of the top plate and then rotating the second leg so as to overlap the first leg, and the second leg is equipped with a wheel of a caster device that protrudes laterally from the tip that is in contact with the floor when in the unfolded position, and The wheels are configured such that (A) when both legs are extended and in contact with the floor, they are lifted off the floor, and when the first leg is lifted from the floor, the second leg is lifted off the floor and the machine can move on the floor; and (B) when both legs are folded and the second leg is placed on the floor, the wheels are in contact with the floor, and when the base end of the second leg placed on the floor is lifted, the machine can move on the floor. The machine is also provided with a handle device having a grip portion that can be grasped by the operator's fingers and lifted, facing the vicinity of the second end edge of the top plate.

[0012] In a preferred embodiment of the present invention, the first leg body and the second leg body each constitute a multi-step ladder-like leg body in which a pair of left and right main legs are connected by rungs, and telescopic legs are inserted into the main legs so as to be slidable and fixable at a predetermined sliding position, and the caster device is provided at the tip of the telescopic leg provided on the second leg body.

[0013] Regarding the configuration of the first embodiment of the handle device, a locking device (11) is provided located on the underside of the top plate, which locks the second leg body in a non-rotatable position when it is in the extended position (P1), and a release operation device (20) is provided for releasing the lock. The locking device (11) comprises a pair of rods (15) positioned near the second end edge of the top plate, and the rods are configured to lock the second leg body when moved in the locking direction by a spring in the axial direction, and to release the lock when moved in the unlocking direction against the spring. The release operation device comprises pedal means interlocked and connected to the opposing base ends of the pair of rods. The pedal mechanism is pivotally supported so as to be rotatable between a locked position, which is moved away from the underside of the top plate in conjunction with the movement of the rod in the locking direction, and an unlocked position, which is close to the underside of the top plate, and is configured to move the rod in the unlocking direction when rotated from the locked position to the unlocked position. The handle device is provided on the pedal mechanism and is configured so that when an operator grasps the grip portion and pulls, the workbench with both legs in a folded position moves with the second end edge facing forward in the direction of travel, and the direction in which the grip portion is pulled is configured to move the pedal mechanism away from the underside of the top plate.

[0014] In the second embodiment of the handle device, a work platform is formed on the upper surface of a flat plate material constituting the top plate, and the handle device is provided on the upper surface of the plate material at a location near the second end edge.

[0015] In this case, it is preferable that the handle device comprises a grip portion arranged along the upper surface of the plate material and a shaft portion extending from the grip portion and slidably inserted through the plate material, and that the orientation can be changed between a retracted position where the grip portion is close to the upper surface of the plate material and an extended position where the grip portion is separated from the upper surface of the plate material via the sliding of the shaft portion.

[0016] In the third embodiment of the handle device, an end cap material is provided on the second end edge of the top plate, and the handle device is provided on the end cap material.

[0017] In this case, it is preferable that the handle device comprises a grip portion arranged along the outer surface of the end cap material and a shaft portion extending from the grip portion and slidably inserted through the end cap material, and that the handle device is configured to be able to change its orientation between a retracted position in which the grip portion is close to the outer surface of the end cap material and an extended position in which the grip portion is separated from the outer surface of the end cap material via the sliding of the shaft portion. [Effects of the Invention]

[0018] According to the present invention, in a folding workbench in which the first leg body 5A is a front-folding leg and the second leg body 5B is a rear-folding leg, the wheels 28 of the caster device 26 are provided protruding laterally from the tip of the second leg body 5B. This has the effect that, in both the working state in the unfolded position P1 and the non-working state in the folded position P2, the wheels 28 can be moved on the floor surface simply by lifting a predetermined part. Furthermore, when lifting the base end of the second leg body 5B in order to move the wheels 28 in the folded position P2, the grip portion 30 of the handle device 29 is provided facing the vicinity of the second end edge 3B of the top plate 2, so that the lifting and moving can be easily performed by grasping the grip portion. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view showing an example of a folding workbench according to one embodiment of the present invention. [Figure 2] The diagram shows a workbench; (A) is a front view showing the workbench in its working position with its legs extended, and (B) is a front view showing how to move the workbench in its working position. [Figure 3]A method of changing the footrest from the deployed position to the folded position is shown. (A) is a front view showing the state where the top plate is placed downward on the floor. (B) is an enlarged front view showing the pedal means for unlocking. (C) is a front view showing the state where the first footrest is rotated towards the top plate. (D) is a front view showing the folded state where the second footrest is rotated to overlap with the first footrest. [Figure 4] Regarding the workbench in the non - working state, (A) is a front view showing the state where the second footrest is placed on the floor. (B) is a front view showing the state where the operator holds the handle device to lift the second side edge of the top plate and moves the workbench for traveling. (C) is a front view showing the state where the workbench is moved for traveling by extending the telescopic leg of the second footrest. [Figure 5] Regarding the pivot structure and locking device of the second footrest, it is a perspective view showing the state where the second side edge of the top plate and the second footrest are separated. [Figure 6] Regarding the first embodiment of the handle device of the present invention, the pedal means of the release operation device for releasing the lock of the locking device is shown. (A) is a perspective view showing the state where the pedal means and the handle device are separated. (B) is a perspective view showing the state where the handle device is attached to the pedal means. [Figure 7] The lower surface of the top plate is shown in the upward state. (A) is a perspective view showing the state where the locking device, the release operation device, and the end cap material are disassembled. (B) is an explanatory view showing the operation of the rod of the locking device. [Figure 8] The lower surface of the top plate is shown in the upward state, and it is a perspective view showing the state where the locking device and the release operation device are assembled and the end cap material is attached. [Figure 9] Regarding the handle device according to the first embodiment, it is a bottom view showing the workbench in the non - working state. [Figure 10] The second embodiment of the handle device of the present invention is shown. (A) is a plan view showing the workbench in the non - working state. (B) is an enlarged view of the part where the handle device is provided. [Figure 11]Regarding the handle device of the second embodiment, (A) is a perspective view of the handle device, (B) is a cross-sectional view showing the grip portion in the retracted position, and (C) is a cross-sectional view showing the grip portion in the extended position. [Figure 12] This diagram shows a third embodiment of the handle device of the present invention, where (A) is a plan view showing a workbench in a non-working state, and (B) is an enlarged view of the portion where the handle device is provided. [Figure 13] Regarding the handle device of the third embodiment, (A) is a cross-sectional view showing the grip portion in the retracted position, and (B) is a cross-sectional view showing the grip portion in the extended position. [Modes for carrying out the invention]

[0020] Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0021] (Workbench) The folding work platform of the present invention includes various types of folding work platforms used for working at heights in construction sites and the like, but one example of a preferred work platform is shown in the drawings.

[0022] As shown in Figure 1, the workbench 1 has two side edges located in the longitudinal directions X1 and X2 of the top plate 2, opposite each other, which are designated as the first end edge 3A and the second end edge 3B, and two side edges located opposite each other in the longitudinal direction Y, which are designated as the beam side edge 4. The first leg body 5A and the second leg body 5B are provided near the first and second end edge bodies 3A and 3A, respectively. In this case, the two leg bodies 5A and 5B are pivotally connected via the first pivoting device 6A and the second pivoting device 6B, respectively, so as to be able to rotate freely between an unfolded position P1 suspended downward from the top plate 2 and a folded position P2 stored below the top plate 2.

[0023] The first end edge 3A and the second end edge 3B are formed by end cap materials 7A and 7B that are attached to both ends of the top plate 2 in the longitudinal direction X.

[0024] The first leg assembly 5A and the second leg assembly 5B each consist of a multi-stage ladder-like leg assembly formed by connecting a pair of left and right main legs 8, 8 with rungs 9. Telescopic legs 10 are inserted into the main legs 8, 8 so as to be slidable and fixable in predetermined sliding positions. The upper ends of the main legs 8, 8 are pivotally connected to their respective pivot devices 6A and 6B so as to be rotatable.

[0025] As shown in Figure 5, the pivot devices 6A and 6B are constructed by pivoting a rotating bracket 12, which is fixed to the outer surface of the upper end of the main leg 8, to a fixed bracket 11, which is fixed to the girder edge 4 located at both ends of the girder edge 3 of the top plate 2, using a pivot 13 so that the rotation can be freely moved. Figure 5 shows the pivot device 6B facing the second girder edge 3B, but the pivot device 6A facing the first girder edge 3A is constructed in the same way. The pivot devices 6A and 6B are located at the four corners of the top plate 2 and are provided for each main leg 8.

[0026] When the legs 5A and 5B are rotated from the deployed position P1 to the folded position P2, the first leg 5A rotates first so that it follows the underside of the top plate 2, and then the second leg 5B rotates so that it overlaps the first leg 5A. In other words, the first leg 5A forms the first leg to fold, and the second leg 5B forms the second leg to fold, so that the first leg 5A and the second leg 5B are folded and stored in a stacked state under the top plate 2. For this reason, the pivoting device 6A of the first leg 5A has a small rotation radius of the rotating bracket 12 around the pivot 13, while the pivoting device 6B of the second leg 5B has a large rotation radius of the rotating bracket 12 around the pivot 13.

[0027] A locking device 14 is provided to lock the legs 5A and 5B in a position that prevents rotation when they are extended (P1) and when they are folded (P2), and a release device 15 is provided to release the lock. Incidentally, the locking device 14 may be configured to lock only when the legs 5A and 5B are extended (P1).

[0028] (Locking device) Figures 5 to 8 show the locking device 14 and release device 15 related to the pivoting device 6B of the second leg body 5B. Although not shown, a similar device is also provided for the pivoting device 6A of the first leg body 5A, although a different configuration of the device may be used.

[0029] The locking device 11 consists of a pair of rods 16, 16 located on the underside of the top plate 2 and arranged in series in the short direction Y, and an unfolding lock hole 17 and a folding lock hole 18 provided on the rotating bracket 12. The unfolding lock hole 17 is positioned to face the tip of the rod 16 when the leg body 5B is rotated to the unfolded position P1 around the pivot 13. In contrast, the folding lock hole 18 is positioned to face the tip of the rod 16 when the leg body 5B is rotated to the folded position P2 around the pivot 13.

[0030] The rod 16 is slidably inserted into a pivot hole formed in the rib wall or the like on the underside of the top plate 2, and is elastically biased axially toward the rotating bracket 12 by a spring 19. The tip of the rod 16 is a locking portion 16a, which is inserted out of a hole in the fixed bracket 11.

[0031] Therefore, the rod 16 moves axially, with the position where the locking portion 16a is inserted and locked into the locking holes 17 and 18 being the locked position, and the position where the locking portion 16a is retracted from the locking holes 17 and 18 being the unlocked position. Normally, it is elastically held in the locked position by the spring 19, and by operating the release operation device described later, it can be moved in the direction toward the unlocked position, that is, in the unlock direction, against the spring 19.

[0032] (Release operation device) Figures 7 and 8 show the release operation device 15 with the underside of the top plate 2 facing upwards for easier understanding.

[0033] The pair of rods 16, 16 are provided with arm portions 16b by bending their base ends into an L-shape to allow axial movement. The release operation device 15 consists of a guide drive means 20 and a pedal means 21 as a mechanism for moving the rods 16, 16 in the axial direction via the arm portions 16B.

[0034] (Guidance driving means) The guide drive means 20 converts the rotational motion of the arm portion 16b into a lateral motion in the axial direction of the rod 16 when the arm portion 16b is rotated around the axis of the rod 16, thereby constituting a means for moving the lock portion 16a between the locked position and the unlocked position. The pedal means 21 constitutes a means for rotating the arm portion 15b.

[0035] As shown in Figure 7(B), the arm portion 16b is inclined with respect to the lower surface of the top plate 2, inserted into a passage formed in the guide drive means 20, and elastically contacts the inclined guide 20a by the biasing force of the spring 19. The arm portion 16b is rotatable within an angle α range with respect to the axis of the rod 16. During this rotation, the arm portion 16b rotates while sliding elastically in contact with the inclined guide 20a.

[0036] When the rod 16 is moved in the locking direction M1 by the spring 19 and is in the locked position, the arm portion 16b is in an upright tilting position and engages with the starting end of the tilting guide 20a, stopping the rod 16 in the locked position.

[0037] From this state, when the arm portion 16b is tilted manually, that is, rotated toward the release operation direction R2, the arm portion 16b slides along the inclined guide 20a, causing the rod 16 to move toward the unlock direction M2 against the spring 19. This moves the rod 16 to the unlocked position.

[0038] When the manual force is released, the arm portion 16b rotates along the inclined guide 20a in the return direction R1, while the rod 16 moves in the locking direction M1 by the spring 19 and stops at the original locked position.

[0039] (Pedal mechanism) The pedal mechanism 21 is positioned to rotate the arm portion 16b of the rod 16 toward the release operation direction R2, so that the arm portion 16b is positioned to cover the top plate 2 from below.

[0040] The pedal mechanism 21 is formed by bending a metal plate, and is provided with bent pivot pieces 23 on both sides of the foot plate portion 22, and is pivotally attached to pivot brackets 24 fixed to both sides of the guide drive mechanism 20 via pivots 25 so as to be rotatable.

[0041] In this configuration, the pedal mechanism 21 is pivotally supported in a position substantially aligned with the inclination of the arm portion 16b by positioning the pivot 25 to the side of the longitudinal middle portion of the arm portion 16b. Therefore, the foot plate portion 22 of the pedal mechanism 21 is equipped with a pushing portion 26a extending diagonally upward from the pivot 25 and a tail portion 22b extending diagonally downward from the pivot 25.

[0042] As described above, the rod 16 is normally moved to the locked position by the spring 19, so at this time, the pedal means 21 is in a locked position with the pushing part 26a pushed up by the arm part 16b, separating it from the lower surface of the top plate 2.

[0043] Therefore, when the pedal mechanism 21 is manually pushed with the push portion 26a toward the underside of the top plate 2, the arm portion 16b is rotated in the release operation direction R2 as described above, bringing it into an unlocked position close to the underside of the top plate 2. When the manual force is released, the arm portion 16b is rotated toward the return direction R1, and as it moves together with this, the pedal mechanism 21 returns to its original locked position.

[0044] (Caster mechanism) As shown in Figures 1 and 2, the legs 5A and 5B of the workbench 1 are equipped with leg caps 10a at the tips of the telescopic legs 10, and are configured so that the leg caps 10a are in contact with the floor surface G when the workbench is in the extended position P1.

[0045] In this case, the telescopic legs 10, 10 of the second leg body 5B are equipped with a caster device 26 on the leg end fitting 10a. The caster device 26 is formed by attaching a support fitting 27 fixed to the leg end fitting 10a and projecting it laterally toward the longitudinal direction X2, thereby positioning a wheel 28 pivotally supported by the support fitting 27 to the side of the leg end fitting 10a.

[0046] Figure 2 As shown, the wheels 28 of the caster device 26 are lifted off the floor when the leg ends 10a are in contact with the floor surface G with the legs 5A and 5B in the extended position P1. Figure 2 (A)). Therefore, while the worker is working, the wheels 28 are in a state where they cannot move, and thus do not impede safety during the work.

[0047] Therefore, when the first leg 5A, which is in contact with the floor surface G, is lifted and the second leg 5B is raised, the wheel 28 makes contact with the floor surface G, and the leg end fitting 10a is lifted using the wheel 28 as a fulcrum. Figure 2 (B)). Therefore, since the wheels 28 are in a drivable state, the work platform can be moved while remaining in the unfolded position P1 when the worker moves the work location as the work progresses.

[0048] (Folding workbench) Incidentally, as mentioned above, the workbench can be compactly folded when not in use by folding both legs 5A and 5B into the folded position P2.

[0049] As shown in Figures 3(A) and 3(B), with the workbench 1 installed upside down, that is, with the bottom surface of the top plate 2 facing upwards and placed on the floor G, the lock of the locking device 14 can be released by the worker stepping on the foot plate portion 22 of the pedal means 21 with the sole of their foot (shoe sole, etc.).

[0050] When folding, as shown in Figures 5(C) and 5(D), the first leg body 5A, which constitutes the front folding leg, is rotated so that it follows the underside of the top plate 2, and then the second leg body 5B, which constitutes the rear folding leg, is rotated so that it overlaps with the first leg body 5A, thereby achieving the folded position P2.

[0051] Therefore, when moving the workbench in its folded position P2 to a storage location or the like, as shown in Figure 4(A), if the second leg 5B is positioned facing the floor G, the base end of the main leg 8 and the wheel 28 of the caster device 26 will be in contact with the ground. From this state, as shown in Figure 4(B), if the base end of the main leg 8 is lifted, the wheel 28 will be able to move. Thus, the workbench can be easily moved by the movement of the wheel 28.

[0052] (Handle device) To facilitate the movement of the workbench in this folded position P2, a handle device 29 is provided near the second end edge 3B of the top plate 2, allowing the worker to lift it by gripping it with their fingers.

[0053] (First Embodiment) Figures 3 to 9 show a first embodiment of the handle device 29, which is provided on the pedal means 21 that constitutes the release operation device 15.

[0054] Figure 6 As shown, the handle device 29 is formed by bending a metal rod or the like into a roughly gate shape, and has a grip portion 30 that extends left and right above the tail portion 22b of the foot plate portion 22 of the pedal means 21, and a shaft portion 31 that is bent from both ends of the grip portion 30 toward the tail portion 22b, and is attached and fixed by screwing a bolt 32 inserted from the lower side of the tail portion 22b into a female thread formed on the shaft portion 31.

[0055] As a result of providing such a handle device 29, as shown in Figure 4(B), when moving the workbench in the folded position P2, with the wheels 28 of the caster device 26 on the ground, the worker can insert their fingers under the top plate 2 from the second end edge 3B to grip the handle device 29 comfortably, and as shown in the figure, the workbench can be easily lifted so that the second end edge 3B faces upward.

[0056] In this regard, the handle device 29 is provided on the tail portion 22b of the foot plate portion 22 of the pedal means 21. Therefore, as shown in Figure 3(B), when folding the leg body 5B, it does not interfere with the worker stepping on the foot plate portion 22 with the sole of their foot.

[0057] When the caster device 26 is moved while the handle device 29 is grasped and lifted, as shown in Figure 4(B), the operator pulls the handle device 29 to move the second end edge 3B toward the front in the direction of travel. At this time, the direction F in which the handle device 29 is pulled is the direction that separates the pedal means 21 from the lower surface of the top plate 2, that is, the return direction R1 opposite to the release operation direction R2 described above, so the lock of the lock device 14 will not be released during the pulling movement.

[0058] By the way, as shown in Figure 4(C), when moving a small workbench, for example, with a small length dimension L in the longitudinal direction X of the top plate 2, by running the caster device 26 in a folded position P2, if the lifting angle θ is large, the vicinity of the base end (pivot device 6A) of the first leg body 5A may come into contact with the floor surface G, and if moved in this state, it will wear down. In such cases, as shown in the figure, by extending and fixing the telescopic leg 10 equipped with the caster device 26, it becomes possible to move the workbench smoothly with only the wheels 28 of the caster device 26 in contact with the ground.

[0059] (Second Embodiment) Figures 10 and 11 show a second embodiment relating to the handle device 29, which is provided on the upper surface of the flat plate material 2a that forms the work surface of the top plate 2, near the second end edge 3B.

[0060] In this case, the handle device 29 is formed by bending a metal rod or the like into a roughly gate shape, thereby providing a grip portion 30 extending to the left and right, and shaft portions 31, 31 bent into an L shape from both ends of the grip portion 30. However, the shaft portion 31 is made longer, and a holding device 33 is provided on the shaft portion 31.

[0061] The retaining device 33 consists of a retaining cylinder 33a through which the shaft portion 31 is slidably inserted, a spring receiver 33b fixed to the shaft end of the shaft portion 31 inserted from the retaining cylinder 33a, and a spring 33c consisting of a coil spring that is externally fitted onto the shaft portion 31 between the retaining cylinder 33a and the spring receiver 33b.

[0062] Therefore, the handle device 29 is installed by positioning the grip portion 30 on the upper side of the plate material 2a, inserting the retaining cylinder portion 33a through the plate material 2a, and positioning the shaft portion 31 and spring 33c on the lower side of the plate material 29a.

[0063] Therefore, under normal circumstances, as shown in Figure 11(B), the spring 33c moves the shaft portion 31 downward, holding the grip portion 30 in a retracted position Q1 close to the upper surface of the plate material 2a.

[0064] From this state, when the worker needs to grasp the grip portion 30, they can pinch the grip portion 30 with their fingertips and pull it up. As shown in Figure 11(C), the shaft portion 31 moves upward via the compression of the spring 33c, moving the grip portion 30 to the extended position Q2, which separates it from the upper surface of the plate material 2a. This allows the worker to grasp the grip portion 30 with their fingers. When the grip portion 30 is released from being grasped, it automatically returns to the retracted position Q1.

[0065] The handle device 29 configured in this way can be easily and simply attached to the plate material 2a of the top plate 2 at a desired location using the holding device 33. For this reason, it is preferable to attach it as close as possible to the second end edge 3B, but any location that the worker's fingers can reach from the outside of the second end edge 3B is acceptable, and an appropriate location can be selected within the range of the longitudinal direction X2.

[0066] (Third embodiment) Figures 12 and 13 show a third embodiment relating to the handle device 29, which is provided on the end cap material 7B that constitutes the second end edge 3B of the top plate 2.

[0067] The handle device 29, similar to the second embodiment, has a grip portion 30 extending to the left and right, and shaft portions 31, 31 that are relatively long from both ends of the grip portion 30, with a holding device 33 provided on the shaft portions 31. The holding device 33 comprises a holding cylinder 33a, a spring receiver 33b, and a spring 33c, and its configuration is the same as in the second embodiment.

[0068] Therefore, the handle device 29 is attached to the end wall 7a of the end cap material 7B by inserting the retaining cylinder portion 33a through the end wall 7a with the grip portion 30 positioned outside the end wall 7a, and positioning the shaft portion 31 and spring 33c inside the end cap material 7B.

[0069] Therefore, under normal circumstances, as shown in Figure 12(A), the spring 33c moves the shaft portion 31 inside the end cap material 7B, and holds the grip portion 30 in a retracted position Q1 close to the outer surface of the end wall 7a.

[0070] From this state, when the worker needs to grasp the grip portion 30, they can pinch the grip portion 30 with their fingertips and pull it out. As shown in Figure 11(B), the shaft portion 31 moves via the compression of the spring 33c, moving the grip portion 30 to the pulled-out position Q2, which separates it from the outer surface of the end wall 7a. This allows the worker to grasp the grip portion 30 with their fingers. When the grip portion 30 is released from being grasped, it automatically returns to the retracted position Q1.

[0071] As described above, the handle unit, constructed by combining a holding device 33 with a handle device 29 formed by bending a steel rod or the like into a gate shape, can be attached to the plate material 2a of the top plate 2 as in the second embodiment, or to the end wall portion 7a of the end cap material 7B as in the third embodiment, simply by creating a hole for attaching the holding cylinder 33a. This offers a great degree of freedom in selecting the mounting position, and also has the advantage of being easy and simple to install. [Explanation of Symbols]

[0072] 1 Workbench 2 Top plate 2a Board material 3A 1st gable side edge 3B 2nd gable edge 4-digit side edge 5A 1st leg 5B Second leg body 6A, 6B Pivot device 7A, 7B End cap material 7a End wall 8 Main landing gear 9 Stepping stones 10 telescopic legs 10a Leg end fitting 11 Fixing bracket 12 Rotating Brackets 13 Axis 14 Locking device 15 Release operation device 16 rods 16a Locking part 16b Arm section 17 Deployment lock holes 18 folding lock holes 19 Spring 20 Guide drive means 20a Inclined Guide 21 Pedaling 22 Tread section 22a Push part 22b Tail 23 Pivot piece 24 Pivot bracket 25 Axis 26 Caster device 27 Support bracket 28 wheels 29. Handle device 30 Grip section 31 Shaft 32 volts 33 Holding device 33a Holding tube 33b Spring receiver 33c spring

Claims

1. In a folding workbench, the base ends of a first leg (5A) and a second leg (5B) are pivotally connected near the opposing first and second end edges (3A) and second end edges (3B) of the top plate, respectively, and both legs are pivotally connected so as to be able to rotate between an extended position (P1) where they are suspended downward from the top plate and a folded position (P2) where they are stored beneath the top plate, and the folding position is achieved by rotating the first leg so that it follows the underside of the top plate and then rotating the second leg so that it overlaps the first leg, The second leg (5B) is equipped with a caster device (26) with wheels (28) that protrudes laterally from the tip that makes contact with the floor when in the deployed position (P1), The aforementioned wheel (28) is (A) When both legs are extended (P1) and in contact with the floor, they are floating above the floor. When the first leg is lifted from the floor, it touches the floor, causing the second leg to float above the floor and enabling movement on the floor. (B) When both legs are in the folded position (P2) and the second leg is placed on the floor, it is in contact with the floor, and when the base end of the second leg placed on the floor is lifted, it is configured to be able to move on the floor. A locking device (14) is provided located below the second end edge (3B) of the top plate, which locks the second leg (5B) in a position that prevents it from rotating when it is extended (P1) or folded (P2), and a release operation device (15) is provided for releasing the lock. The release operation device (15) is equipped with a pedal means (21) that is linked to the locking device (14), and is pivotally supported so as to be able to move between a locked position away from the underside of the top plate and an unlocked position close to the underside of the top plate, and is configured to unlock the locking device when it is in the unlocked position. A folding workbench moving device is provided, characterized in that a handle device (29) having a grip portion (30) is attached to the pedal means (21), and by gripping the grip portion (30) and pulling while the worker is lifting, the workbench with both legs in a folded position (P2) is moved with the second end edge (3B) facing forward in the direction of travel, and the direction in which the grip portion (30) is pulled is configured to move the pedal means (21) away from the lower surface of the top plate.

2. In a folding workbench, the base ends of a first leg (5A) and a second leg (5B) are pivotally connected near the opposing first and second end edges (3A) and second end edges (3B) of the top plate, respectively, and both legs are pivotally connected so as to be able to rotate between an extended position (P1) where they are suspended downward from the top plate and a folded position (P2) where they are stored beneath the top plate, and the folding position is achieved by rotating the first leg so that it follows the underside of the top plate and then rotating the second leg so that it overlaps the first leg, The second leg (5B) is equipped with a caster device (26) with wheels (28) that protrudes laterally from the tip that makes contact with the floor when in the deployed position (P1), The aforementioned wheel (28) is (A) When both legs are extended (P1) and in contact with the floor, they are floating above the floor. When the first leg is lifted from the floor, it touches the floor, causing the second leg to float above the floor and enabling movement on the floor. (B) When both legs are in the folded position (P2) and the second leg is placed on the floor, it is in contact with the floor, and when the base end of the second leg placed on the floor is lifted, it is configured to be able to move on the floor. A handle device (29) is provided on the upper surface of the flat plate material (2a) that constitutes the top plate, near the second end edge (3B), allowing the worker to lift it by gripping it with their fingers. The handle device (29) comprises a grip portion (30) positioned along the upper surface of the plate material (2a), and a shaft portion (31) extending from the grip portion and slidably inserted through the plate material. A movable device for a folding workbench, characterized in that it is configured to allow the grip portion to be moved freely between a retracted position (Q1) where the grip portion is close to the upper surface of the board material and an extended position (Q2) where the grip portion is separated from the upper surface of the board material, via the sliding of the shaft portion.

3. In a folding workbench, the base ends of a first leg (5A) and a second leg (5B) are pivotally connected near the opposing first and second end edges (3A) and second end edges (3B) of the top plate, respectively, and both legs are pivotally connected so as to be able to rotate between an extended position (P1) where they are suspended downward from the top plate and a folded position (P2) where they are stored beneath the top plate, and the folding position is achieved by rotating the first leg so that it follows the underside of the top plate and then rotating the second leg so that it overlaps the first leg, The second leg (5B) is equipped with a caster device (26) with wheels (28) that protrudes laterally from the tip that makes contact with the floor when in the deployed position (P1), The aforementioned wheel (28) is (A) When both legs are extended (P1) and in contact with the floor, they are floating above the floor. When the first leg is lifted from the floor, it touches the floor, causing the second leg to float above the floor and enabling movement on the floor. (B) When both legs are in the folded position (P2) and the second leg is placed on the floor, it is in contact with the floor, and when the base end of the second leg placed on the floor is lifted, it is configured to be able to move on the floor. A handle device (29) is provided on the end cap material (7B) of the second end edge (3B) of the top plate, which allows the worker to lift it by gripping it with their fingers. The handle device (29) comprises a grip portion (30) arranged along the outer surface of the end cap material (7B), and a shaft portion (31) extending from the grip portion and slidably inserted through the end cap material. A movable device for a folding workbench, characterized in that it is configured to allow the grip portion to be moved freely between a retracted position (Q1) in which the grip portion is close to the outer surface of the end cap material and an extended position (Q2) in which the grip portion is separated from the outer surface of the end cap material, via the sliding of the shaft portion.

4. The first and second leg bodies each consist of a multi-stage ladder-like leg body formed by connecting a pair of left and right main legs with rungs, and telescopic legs are inserted into the main legs so as to be slidable and fixable at predetermined sliding positions. A mobile device for a folding workbench according to claim 1, 2, or 3, characterized in that the caster device (26) is provided at the tip of an extendable leg (10) provided on a second leg body (5B).

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